CN111129891B

CN111129891B - Power supply connecting device

Info

Publication number: CN111129891B
Application number: CN201811572888.0A
Authority: CN
Inventors: 王实现; 袁海林; 袁其云
Original assignee: Huawei Device Co Ltd
Current assignee: Huawei Device Co Ltd
Priority date: 2018-11-01
Filing date: 2018-12-21
Publication date: 2021-06-29
Anticipated expiration: 2038-12-21
Also published as: CN111129891A

Abstract

The application discloses power supply connecting device for realizing that power supply equipment can supply power for first equipment and second equipment simultaneously, and do not influence the data communication between first equipment and second equipment. The power supply connection device provided by the embodiment of the application comprises a first interface, a second interface, a third interface and a control module; the first interface is connected with first equipment, the second interface is connected with second equipment, and the third interface is connected with power supply equipment; when the power supply equipment is connected to the third interface, the control module is used for controlling the establishment of a first power supply path from the third interface to the first interface and a second power supply path from the third interface to the second interface, so that when the first equipment is connected to the first interface, the power supply equipment supplies power to the first equipment through the first power supply path, and when the second equipment is connected to the second interface, the power supply equipment supplies power to the second equipment through the second power supply path.

Description

Power supply connecting device

The present application claims priority from the chinese patent application filed on 2018, 11/01/h, under the name of "a VR display method", with the application number 201811294881.7, which is incorporated by reference in its entirety.

Technical Field

The application relates to the field of circuits, in particular to a power supply connecting device.

Background

The main device is usually used as a Dual Role Port (DRP) device, that is, it can be used as both a source port (DFP) and a slave port (UFP), and can also dynamically switch between the DFP and the UFP, typical DRP devices are intelligent terminals, computers, mobile phones, and the like, and they can be used as devices that are charged and read data, and also as devices that provide power for other devices; the slave device is usually used as a slave UFP device, typical slave devices are VR glasses and the like, and they need to obtain power from the master device or DFP device to start operation, and can also receive data; the DFP device may provide the power supply voltage VBUS and may also provide data, and typical DFP devices are chargers, power adapters, etc. that provide power; after the master device is connected to the slave device, the master device generally serves as a Data Role Host (DRH), and needs to maintain power supply operation by an internal lithium battery, and also needs to provide a power supply for the slave device to maintain operation of the slave device, which often causes high power consumption.

Therefore, in order to reduce the power consumption problem of the master device, the prior art adds a charging interface to the slave device, and the charging interface is specially used for charging the slave device.

However, adding a special charging interface for charging the slave device requires adding a special charging line and a charger adapted to the charging line, which results in poor user experience due to redundant devices; although the master device does not need to supply power to the slave device, the master device usually has only one external interface, and no additional interface is used for charging after the slave device is connected, so that the power consumption of the master device still exists, and the endurance time is obviously reduced particularly under heavy-load application.

Disclosure of Invention

The embodiment of the application provides a power supply connecting device, so that power supply equipment can charge first equipment and second equipment, data communication between the first equipment and the second equipment is not influenced, power supply of the second equipment is ensured, the first equipment can be supplemented with electric quantity, and the cruising ability of the first equipment is improved.

In view of this, the embodiments of the present application provide the following solutions:

a first aspect of the present application provides a power supply connection device, which may include a first interface, a second interface, a third interface, and a control module; the first interface is connected with first equipment, the second interface is connected with second equipment, and the third interface is connected with power supply equipment; when the power supply equipment is connected to the third interface, the control module is used for controlling the establishment of a first power supply path from the third interface to the first interface and a second power supply path from the third interface to the second interface, so that when the first equipment is connected to the first interface, the power supply equipment supplies power to the first equipment through the first power supply path, and when the second equipment is connected to the second interface, the power supply equipment supplies power to the second equipment through the second power supply path. According to the first aspect, the power supply device can supply power to the first device and the second device through the power supply connecting device, so that the power supply of the second device is ensured, the first device can be supplemented with electric quantity, and the cruising ability of the first device is improved.

Optionally, with reference to the first aspect, in a first possible implementation manner, when the first device accesses the first interface and the third interface has no power supply device, the control module is configured to control to establish a third power supply path from the first interface to the second interface, so that when the second device accesses the second interface, the first device supplies power to the second device through the third power supply path. Therefore, when only the first device and the second device are connected to the power supply connecting device, the first device is required to supply power to the second device, and power supply of the second device is ensured.

Optionally, with reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, when the power supply device is connected to the third interface, the control module is configured to control to disconnect the third power supply path and establish the first power supply path and the second power supply path. Therefore, the power supply of the second equipment is ensured, the first equipment can be supplemented with electric quantity, and the cruising ability of the first equipment is improved.

Optionally, with reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, when the power supply device pulls out the third interface, the control module is configured to control to disconnect the first power supply path and the second power supply path and establish the third power supply path.

Optionally, with reference to the first aspect, in a fourth possible implementation manner, the power supply connection device may further include a first switch, a second switch, a third switch, and a voltage regulation module; the first end of the first switch is connected with the third interface, the second end of the first switch is connected with the voltage regulation module, and the third end of the first switch is connected with the first end of the second switch; the second end of the second switch is connected with the first interface, and the third end of the second switch is connected with the control module; the first end of the third switch is connected with the second interface, the second end of the third switch is connected with the voltage regulation module, and the third end of the third switch is connected with the control module; when the power supply equipment is connected to the third interface, the first switch is closed, so that the power supply equipment supplies power to the control module through the first switch and the voltage regulation module; the control module is used for controlling the second switch to be closed so as to establish a first power supply path from the third interface, the first switch and the second switch to the first interface; the control module is used for controlling the third switch to be closed so as to establish a second power supply path from the first switch, the voltage regulating module and the third switch to the second interface. Therefore, when the power supply equipment is connected to the power supply connecting device, the power supply control module controls different switches to establish a power supply path for the first equipment and the second equipment, so that the power supply of the second equipment is ensured, the first equipment can be supplemented with electric quantity, and the cruising ability of the first equipment is improved.

Optionally, with reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the power supply connection device may further include a fourth switch, the voltage regulation module includes a voltage reduction circuit, a fifth switch, and a voltage boost circuit, and the voltage reduction circuit is connected to the voltage boost circuit through the fifth switch; the first end of the fourth switch is connected with the first interface, the second end of the fourth switch is connected to the connection point of the fifth switch and the booster circuit, and the third end of the fourth switch is connected with the control module; when the first equipment is connected to the first interface and the third interface is not connected with the power supply equipment, the second switch is closed, so that the first equipment supplies power to the control module through the second switch and the voltage regulating module; the control module is used for controlling the fourth switch to be switched on and switched off so as to establish a third power supply path from the first interface, the fourth switch, the booster circuit and the third switch to the second interface. Therefore, when the first device is connected first and the power supply device is not connected to the power supply connection device, the first device can also supply power to the control module, so that the power-supplied control module controls different switches to establish a path for the first device to supply power to the second device, thereby ensuring the power supply of the second device.

Optionally, with reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, when the power supply device is connected to the third interface, the control module is configured to control to disconnect the fourth switch and the third switch to disconnect the third power supply path; the control module is used for controlling the second switch and the third switch to be closed so as to establish a first power supply path and a second power supply path.

Optionally, with reference to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner, when the power supply device pulls the third interface, the control module is configured to control to open the second switch and the third switch to open the first power supply path and the second power supply path, and control to close the second switch, the fourth switch, and the third switch to establish the third power supply path.

Optionally, with reference to the first aspect and the first to seventh possible implementation manners of the first aspect, in an eighth possible implementation manner, the power supply connection device may further include a forward-backward insertion adaptation module, and the control module includes a first control unit and a second control unit; the first control unit is used for detecting the positive and negative interpolation information of the first equipment, and the second control unit is used for detecting the positive and negative interpolation information of the second equipment; the second control unit sends the positive and negative interpolation information of the second equipment to the first control unit; the first control unit sends the positive and negative insertion information of the first device and the positive and negative insertion information of the second device to the positive and negative insertion adaptation module, so that the positive and negative insertion adaptation module is used for controlling the positive and negative insertion adaptation adjustment of the first device and the second device, and the first device carries out data communication to the second device. Therefore, the forward and reverse insertion information of the first equipment and the second equipment can be adjusted through the forward and reverse insertion adaptation module, so that the first equipment and the second equipment can normally communicate while being powered by the power supply equipment.

Optionally, with reference to the first aspect and the first to eighth possible implementation manners of the first aspect, in a ninth possible implementation manner, the power supply connection device may further include an extension module, where the extension module is configured to extend the detection signal in the power supply device, so that the extended detection signal is connected to the first device, the second device, and the power supply connection device respectively to form an N-segment closed ground loop, the closed ground loop is configured to issue an alarm when the power supply device detects that any one segment of the loop is disconnected, the alarm is used for preventing theft of the first device, the second device, or the power supply connection device, and N is an integer greater than 3. Therefore, the detection signal is expanded and is respectively connected with the first equipment, the second equipment and the power supply connecting device to form a closed ground loop, and when a certain section of closed ground loop is disconnected, the anti-theft can be effectively realized through an alarm.

According to the technical scheme, the embodiment of the application has the following advantages:

when the power supply device is connected to the power supply connection device, the power-supplied control module can control the establishment of the first power supply path and the second power supply path, so that the power supply device can supply power to the first device through the first power supply path and can supply power to the second device through the second power supply path. Therefore, in the process of communication between the first equipment and the second equipment, under the condition of not influencing communication, the power supply of the second equipment is ensured, and the first equipment can be supplemented with electric quantity, so that the cruising ability of the first equipment is improved.

Drawings

Fig. 1a is a schematic diagram of a product configuration of a power supply connection device according to an embodiment of the present application;

fig. 1b is a schematic view of a scenario of a power supply connection device provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a power supply connection device provided in an embodiment of the present application;

fig. 3a is another schematic structural diagram of a power supply connection device provided in an embodiment of the present application;

fig. 3b is another schematic structural diagram of the power supply connection device provided in the embodiment of the present application;

fig. 4 is another schematic structural diagram of a power supply connection device provided in an embodiment of the present application;

fig. 5 is another schematic structural diagram of a power supply connection device provided in an embodiment of the present application;

fig. 6 is another schematic structural diagram of a power supply connection device provided in an embodiment of the present application;

fig. 7 is another schematic structural diagram of a power supply connection device provided in an embodiment of the present application;

fig. 8 is another schematic structural diagram of a power supply connection device provided in an embodiment of the present application;

fig. 9 is another schematic structural diagram of a power supply connection device provided in an embodiment of the present application;

fig. 10 is another schematic structural diagram of a power supply connection device provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

Fig. 1a is a schematic product form of a power supply connection device according to an embodiment of the present disclosure.

As shown in fig. 1a, the power supply connection device includes three interfaces, where the three interfaces can respectively support the first device, the second device, and the power supply device to access; the interface C1 may be used to lead out a fixed cable for connecting with a first device, the interface C2 is used to connect with a second device, and the interface C3 is used to connect with a power supply device. And it can be seen from fig. 1a that the interface C1 is located on the same side of the power supply connection device as the interface C3, and the interface C2 is located on the opposite side, but in practical application, the location and number of the interfaces may be determined according to practical requirements, for example: the positions of the interfaces may be on the same side, and the number of interfaces may be 4, 5 or more, and fig. 1a should not be construed as limiting the number and positions of the interfaces.

In the embodiment of the present application, the mentioned interface may be a TYPE-C interface, a MICRO USB interface, or the like, and is not limited herein.

Fig. 1b is a schematic view of an application scenario of the power supply connection device according to the embodiment of the present application.

As shown in fig. 1b, the interface C1, the interface C2, and the interface C3 in fig. 1a may be used to connect the first device, the second device, and the power supply device. In the application scenario, the first device is a mobile phone, the second device is Virtual Real (VR) glasses, and the power supply device is a charger. In practical applications, the first device may also be a tablet computer, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or other terminal devices. The second device may be a VR headset, a High Definition Multimedia Interface (HDMI) device, or an in-vehicle device, which is used for synchronization with the first device.

Fig. 1a and fig. 1b respectively describe a possible product form of the power supply connection device provided by the embodiment of the present application and a possible scenario in application of the product, and the power supply connection device provided by the embodiment of the present application is described below with reference to the accompanying drawings.

Fig. 2 is a schematic structural diagram of a power supply connection device according to an embodiment of the present application.

As shown in fig. 2, an embodiment of the power supply connection device provided in the embodiment of the present application may include: the device comprises a first interface 201, a second interface 202, a third interface 203 and a control module 204, wherein the first interface 201 is used for being connected with a first device, the second interface 202 is used for being connected with a second device, and the third interface 203 is used for being connected with a power supply device.

When the power supply device is connected to the third interface 203, the control module 204 is configured to control establishment of a first power supply path from the third interface 203 to the first interface 201 and a second power supply path from the third interface 203 to the second interface 202, so that when the first device is connected to the first interface 201, the power supply device supplies power to the first device through the first power supply path, and when the second device is connected to the second interface 202, the power supply device supplies power to the second device through the second power supply path.

The control module 204 in this embodiment may be a logic control chip, or may be a device having the same or similar logic control characteristics as the logic control chip, and is not limited herein, and is described by taking the logic control chip as an example.

In this embodiment, when the power supply device is connected to the power supply connection apparatus through the third interface, the power supply device may supply power to the control module 204, and thus the control module 204 may control to establish the first power supply path and the second power supply path, so that the power supply device may supply power to the first device through the first power supply path and may supply power to the second device through the second power supply path. Therefore, in the process of communication between the first equipment and the second equipment, under the condition of not influencing communication, the power supply of the second equipment is ensured, and the first equipment can be supplemented with electric quantity, so that the cruising ability of the first equipment is improved.

However, in practical applications, the power supply device may supply power to the first device and the second device, or the first device may temporarily supply power to the second device when the power supply device is not connected, and the power supply device supplies power after the power supply device is connected. Therefore, the order of the first device and the power supply device accessing the power supply connecting device may be different, and two access modes may also be considered, wherein the first access mode is that the power supply device accesses the power supply connecting device before the first device; the second access mode may be that the first device accesses the power supply connection apparatus before the power supply device.

For a scheme that the first device is first connected to the power supply connection device, and the power supply device is then connected to the power supply connection device, please refer to fig. 3a for understanding, where fig. 3a is another schematic structural diagram of the power supply connection device provided in the embodiment of the present application.

As shown in fig. 3a, another embodiment of the power supply connection device provided in the embodiment of the present application may further include:

when the first device is connected to the first interface 201 and the third interface 203 has not been connected to a power supply device, the control module 204 is configured to control to establish a third power supply path from the first interface 201 to the second interface 202, so that when the second device is connected to the second interface 202, the first device supplies power to the second device through the third power supply path.

When it is detected that the power supply device is connected to the third interface 203, the control module 204 is configured to control to disconnect the third power supply path and establish the first power supply path and the second power supply path, for example, as described in the above section of fig. 2.

In this embodiment, as shown in fig. 3a, if the first device is inserted into the power supply connection device through the first interface first, and when the power supply device is not inserted, the first device may supply power to the control module 204, the control module 204 may monitor that the first interface has access information first after starting operation, so as to determine that the first device has accessed into the power supply connection device through the first interface at this time, and since the second device needs to supply power, under the condition that only the first device is accessed first, the first device may perform negotiation of the port attribute of the first interface with the control module 204, so that the first device may serve as a power supply end and a data source end, and thus the first device may supply power to the second device. Of course, before the first device supplies power to the second device, the control module 204 is required to control the third power supply path from the first interface to the second interface to be established, so that the first device supplies power to the second device through the third power supply path.

When the first device first charges the second device through the third power supply path, as shown in fig. 3b, if the control module 204 monitors that the third interface has access information, it is determined that the third interface is accessed to the power supply device, and at this time, the first device and the control module 204 are also required to perform port attribute negotiation, so that the first device can be used as a power supply slave and a data source under the condition that the power supply device is accessed, where the power supply slave indicates that the first device can acquire electric quantity from the power supply device to perform charging, and the purpose of performing the port attribute negotiation is mainly that after the power supply device is accessed, the power supply device can charge the first device and the second device, and it is not required to charge the second device by using the first device as a power supply source.

Therefore, after the power supply device is connected, the control module 204 is required to cut off the third power supply path, control to establish the first power supply path and the second power supply path described in fig. 2, and enable the power supply device to simultaneously supply power to the first device and the second device. Therefore, in the process of communication between the first equipment and the second equipment, under the condition of not influencing communication, the power supply of the second equipment is ensured, and the first equipment can be supplemented with electric quantity, so that the cruising ability of the first equipment is improved.

The above description is about the scheme that the first device accesses the power supply connection device before the power supply device accesses the power supply connection device, and when the power supply device accesses the power supply connection device before the first device, the first power supply path and the second power supply path are directly established without establishing the third power supply path.

Fig. 3b is another schematic structural diagram of the power supply connection device according to the embodiment of the present application.

As shown in fig. 3b, another embodiment of the power supply connection device provided in the embodiment of the present application may further include: when it is monitored that the power supply device is unplugged from the third interface, the control module 204 is configured to control to disconnect the first power supply path and the second power supply path and establish a third power supply path.

The present embodiment is based on the embodiment described in fig. 3a, and if the power supply device, the first device, and the second device are all connected to the power supply connection apparatus, and the control module 204 has controlled to establish the first power supply path as shown in fig. 3a to supply power to the first device, and control to establish the second power supply path to supply power to the second device. If the power supply device is pulled out at this time, as shown in fig. 3b, the control module 204 will cut off the first power supply path and the second power supply path shown in fig. 3a, and make the first device serve as a power supply end and a data source end through negotiation of port attributes with the first device, so as to control to establish a third power supply path shown in fig. 3a to charge the second device.

The above describes the process of the control module 204 of the power supply connection device controlling the establishment of the first power supply path, the second power supply path and the third power supply path and the disconnection of the first power supply path, the second power supply path and the third power supply path under different conditions, and is further described with reference to the accompanying drawings.

Fig. 4 is another schematic structural diagram of a power supply connection device according to an embodiment of the present application.

As shown in fig. 4, another embodiment of the power supply connection device provided in the embodiment of the present application may further include: a first switch 401, a second switch 402, a third switch 403, and a voltage regulation module 404; a first end of the first switch 401 is connected with the third interface 204, a second end of the first switch 401 is connected with the voltage regulation module, and a third end of the first switch 401 is connected with a first end of the second switch 402; a second end of the second switch 402 is connected with the first interface 201, and a third end of the second switch 402 is connected with the control module 204; a first terminal of the third switch 403 is connected to the second interface 202, a second terminal of the third switch 403 is connected to the voltage regulation module 404, and a third terminal of the third switch 403 is connected to the control module 204.

When the power supply device is connected to the third interface 203, the first switch 401 is triggered to close due to the voltage provided by the power supply device, so that the power supply device supplies power to the control module 204 through the first switch 401 and the voltage regulation module 404.

After the control module 204 is powered, the control module 204 is configured to control the second switch 402 to close to establish a first power supply path from the third interface 203, the first switch 401, and the second switch 402 to the first interface 201. Meanwhile, the control module 204 is configured to control the third switch 403 to close to establish a second power supply path from the first switch 401, the voltage regulating module 404, and the third switch 403 to the second interface 202.

In this embodiment, when the power supply device is connected to the third interface, the power supply device may start to output a 5V power voltage, and the power voltage may cause the first switch to be closed, and because the 5V power voltage output by the power supply device is unstable, the 5V power voltage needs to be changed into a stable 5V voltage by the voltage regulating module, so that the stable 5V voltage may flow into the control module, and the control module 204 may start to operate after receiving power supply from the power supply device.

If the control module 204 in the working state monitors the access information of the first interface, that is, it is determined that the first device is accessed to the first interface, after monitoring that the first device is accessed, the control module 204 controls the voltage of the second switch, so that the voltage can trigger the second switch to be closed, and thus the mentioned first power supply path is switched on, so that the power supply voltage output by the power supply device flows through the third interface, the closed first switch, the closed second switch and the first interface to the first device in sequence, and power supply for the first device is realized.

It should be noted that, because the power supply device accessed by the third interface can serve as a power supply end, the first device serves as a power supply slave end and a data source end at this time, which is mainly because in the presence of the power supply device, after the first device is accessed, the first device first performs negotiation on the port attribute of the first interface with the control module 204, and after the negotiation, the first device can be considered to be capable of receiving the voltage output by the power supply device, and only can perform data communication with the second device, so as to output data to the second device; on the contrary, if the negotiation is not performed, the first device may be considered to be capable of serving as a power supply terminal, and at this time, it is impossible to output a voltage from one power supply terminal to another power supply terminal, and the first device may not output data to the second device. Therefore, after the first device is used as a power supply slave and a data source, the power supply device can supply power to the first device through the first power supply path.

Similarly, if the control module 204 in the working state monitors the access information of the second interface, that is, it is determined that the second device is accessed to the second interface, after monitoring that the second device is accessed, the control module 204 controls the voltage of the third switch, so that the voltage can trigger the third switch to be closed, and thus the mentioned second power supply path is conducted, and thus the power supply voltage output by the power supply device flows through the third interface, the closed first switch, the voltage adjustment module, the closed third switch, and the second interface successively to the second device, thereby supplying power to the second device.

It should be noted that the second device serves as a power supply slave and a data slave, and in the case where no first device or power supply device is connected, it does not play any role in connecting to the power supply connection device, so the order of connecting to the power supply connection device for the second device may not be limited.

Therefore, after the power supply device is connected, the control module 204 in the power supply connection apparatus may control to establish the first power supply path and the second power supply path, so that the power supply device simultaneously supplies power to the first device and the second device. Therefore, in the process of communication between the first equipment and the second equipment, under the condition of not influencing communication, the power supply of the second equipment is ensured, and the first equipment can be supplemented with electric quantity, so that the cruising ability of the first equipment is improved.

Fig. 5 is another schematic structural diagram of a power supply connection device according to an embodiment of the present application.

On the basis of the embodiment corresponding to fig. 4, as shown in fig. 5, another embodiment of the power supply connection device provided in the embodiment of the present application may further include: the fourth switch 501 and the voltage regulation module 404 include a voltage reduction circuit 4041, a fifth switch 4042 and a voltage boost circuit 4043, and the voltage reduction circuit 4041 is connected with the voltage boost circuit 4043 through the fifth switch 4042; a first end of the fourth switch 501 is connected to the first interface 201, a second end of the fourth switch 501 is connected to a connection point of the fifth switch 4042 and the voltage boost circuit 4043, and a third end of the fourth switch 501 is connected to the control module 204.

When the first device is connected to the first interface 201 and the third interface 203 is not connected to the power supply device, the second switch 402 is triggered to be closed due to the voltage provided by the first device, so that the first device supplies power to the control module 204 through the second switch 402, the step-down circuit 4041, the fifth switch 4042, and the step-up circuit 4043.

After the control module 204 is powered, the control module 204 is configured to control the fourth switch 501 to close to establish a third power supply path from the first interface 201, the fourth switch 501, the voltage boost circuit 4043, and the third switch 403 to the second interface 202.

When the control module 204 monitors that the power supply device is connected to the third interface 203 after the control module 204 is powered by the first device, the control module 204 is configured to control to open the fourth switch 501 and the third switch 403 to disconnect the third power supply path. At the same time, the control module 204 is configured to control the second switch 402 and the third switch 403 to be closed to establish a first power supply path and a second power supply path, for example, as described in part in fig. 4.

In this embodiment, as shown in fig. 5, if the first device first accesses the first interface, the control module 204 serving as the power supply slave triggers the first device to serve as a power supply end, so that the first device can supply power to the control module 204. The charging process of the control module 204 is mainly realized by outputting a 5V power supply voltage after the first device is connected, the 5V power supply voltage can cause the second switch to be closed and flow into the voltage-reducing circuit, so that the 5V power supply voltage is pulled down to a 4V voltage after the voltage-reducing circuit is started to work, the 4V voltage continuously flows into the fifth switch to cause the fifth switch to be closed, and finally the 4V voltage flows into the voltage-boosting circuit to cause the 4V voltage to be pulled up to the 5V voltage after the voltage-boosting circuit is started to work, the 5V voltage at this time is in a stable state relative to the 5V power supply voltage output by the first device, and the control module 204 can receive the stable 5V voltage to start to work.

If the control module 204 in the working state monitors that the power supply device is not connected to the third interface, the first device may charge the second device. The control module 204, which is in operation, controls the voltage of the fourth switch, which causes the fourth switch to close. Therefore, after controlling the fourth switch to be closed, the control module 204 needs to control the voltage of the third switch, which can cause the third switch to be closed, and since the first device is conducting when supplying power to the control module 204, the conduction of the third power supply path is achieved. That is to say, when the first device is connected and the second device is connected to the power supply connection device, the first device outputs a voltage, and the voltage flows through the first interface, the closed fourth switch, the booster circuit, the closed third switch and the second interface to the second device in sequence.

It should be noted that, after the control module 204 controls the fourth switch to be turned on and turned off, a turn-off signal may be further output to the voltage-reducing circuit, and the turn-off signal may turn off the voltage-reducing circuit, or the control module 204 controls the voltage of the voltage-reducing circuit to be lower than 1.8V, and at this time, if the voltage value of the voltage-reducing circuit is lower than 1.8V, the voltage-reducing circuit is turned off. The purpose of turning off the voltage reducing circuit is mainly that after the control module 204 controls the fourth switch to be turned on and off, the first device can still charge the control module 204 through the first interface, the closed fourth switch and the voltage boosting circuit, and therefore the original path passing through the voltage reducing circuit does not need to be used for power supply.

When the control module 204 is powered by the first device, if the control module 204 monitors that the power supply device is connected to the third interface, the first power supply path and the second power supply path may be established by control to respectively supply power to the first device and the second device, so that the third power supply path for supplying power to the second device by the first device needs to be disconnected. That is, after receiving the power supply from the power supply device, the control module 204 may control the voltage of the third switch, so as to cause the third switch to be turned off, so that the output voltage of the first device cannot be turned on at the third switch, and thus the first device does not need to supply power to the second device.

After the control module 204 for supplying power to the power-supplied device controls the disconnection of the third power supply path, the power amounts required by the second device and the first device can be obtained from the power-supplying device. That is, after the power supply device is connected to the third interface, a power supply voltage may be output, and the power supply voltage may conduct a path for the power supply device to supply power to the control module 204, as shown in fig. 4, when the power supply device is connected to the third interface, the power supply device may start to output a 5V power supply voltage, which may cause the first switch to be closed, and since the 5V power supply voltage output by the power supply module is unstable, the unstable 5V power supply voltage needs to be changed into a stable 5V voltage by the voltage regulating module. In this embodiment, as shown in fig. 5, after the voltage of the 5V power supply is reduced to 4V by the voltage reducing circuit, the voltage of the 4V power supply may be driven to close by the fifth switch, and finally, the voltage of the 4V power supply is pulled to the stable voltage of 5V by the voltage increasing circuit, so that the stable voltage of 5V may flow into the control module 204, and the control module 204 may start the operation after receiving the power supply from the power supply device. After that, the control module 204 may control the fourth switch to be opened by controlling the voltage of the fourth switch or outputting an opening signal to the fourth switch, and after the fourth switch is opened, it needs to control the second switch and the third switch to be closed, so as to respectively control the first power supply path and the second power supply path, which are described in the above section of fig. 4, to be established for charging the first device and the second device.

It should be noted that the control module 204 can control the turn-off of the fourth switch only after the voltage-reducing circuit is turned on first, which is mainly because the third switch is turned off to control the turn-off of the third power supply path, and at this time, if the power supply device is not connected to the third interface, the first device is still required to supply power to the control module 204.

Therefore, after the power supply device is connected, the control module 204 is required to cut off the third power supply path, control to establish the first power supply path and the second power supply path as described above, and enable the power supply device to simultaneously supply power to the first device and the second device. Therefore, in the process of communication between the first equipment and the second equipment, under the condition of not influencing communication, the power supply of the second equipment is ensured, and the first equipment can be supplemented with electric quantity, so that the cruising ability of the first equipment is improved.

The above fig. 4 and 5 further describe the process of the control module of the power supply connection apparatus controlling the establishment of the first power supply path, the second power supply path and the third power supply path and the disconnection of the first power supply path, the second power supply path and the third power supply path in different situations in conjunction with the switching device, and are further described below in conjunction with the attached drawings.

The described switching device may be a PMOS transistor, a MOS transistor, etc., and is not limited specifically. In this embodiment, only PMOS transistors are used for illustration, please refer to fig. 6 for understanding, and fig. 6 is another schematic structural diagram of the power supply connection device according to the embodiment of the present disclosure.

As shown in fig. 6, another schematic structural diagram of the power supply connection device provided in the embodiment of the present application may further include:

the first switch 401 comprises a PMOS transistor Q4, the second switch 402 comprises a PMOS transistor Q3, the third switch 403 comprises a PMOS transistor Q6, a PMOS transistor Q7 and a voltage regulation module 404; the drain of the PMOS transistor Q4 is connected to the third interface 204, and the source is connected to the connection point between the voltage regulation module and the source of the PMOS transistor Q3; the drain of the PMOS transistor Q3 is connected to the first interface 201, the source is connected to the connection point between the voltage regulation module 404 and the source of the PMOS transistor Q4, and the gate is connected to the control module 204; the drain of the PMOS transistor Q6 is connected to the voltage regulating module 404, the source is connected to the source of the PMOS transistor Q7, the drain of the PMOS transistor Q7 is connected to the second interface 202, and the gate of the PMOS transistor Q6 and the gate of the PMOS transistor Q7 are connected to the control module.

When the power supply device is connected to the third interface 203, the PMOS transistor Q4 is turned on, so that the power supply device supplies power to the control module 204 through the PMOS transistor Q4 and the voltage regulation module 404.

After the control module 204 is powered, the control module 204 is configured to control the PMOS transistor Q3 to close, so as to establish a first power supply path from the third interface 203, the PMOS transistor Q4, and the PMOS transistor Q3 to the first interface 201. Meanwhile, the control module 204 is configured to control the PMOS transistor Q6 and the PMOS transistor Q7 to close, so as to establish a second power supply path from the PMOS transistor Q4, the voltage regulating module 404, the PMOS transistor Q6, and the PMOS transistor Q7 to the second interface 202.

In this embodiment, since the PMOS transistor Q4 has a parasitic diode, an anode of the parasitic diode is connected to the drain of the PMOS transistor Q4, and an anode of the parasitic diode is connected to a cathode of the PMOS transistor Q4, when the power supply device is connected to the third interface, the power supply device can start to output a 5V power supply voltage, the power supply voltage can be unidirectionally conducted through the diode in the parasitic diode, and the 5V power supply voltage output by the power supply device is unstable, so that the 5V power supply voltage needs to be changed into a stable 5V voltage by the voltage regulating module, so that the stable 5V voltage can flow into the control module 204, and the control module 204 can start to operate after receiving the electric quantity of the power supply device.

When the control module 204 monitors the access information of the first interface, it determines that the first device has accessed the power supply connection device through the first interface at this time. Therefore, after monitoring that the first device is connected, the control module 204 outputs a first close control signal to the gate of the PMOS transistor Q3, where the first close control signal is the gate driving voltage of the PMOS transistor Q3, and the first close control signal can trigger the PMOS transistor Q3 to be turned on, so as to turn on the aforementioned first power supply path, so that the power supply voltage output by the power supply device sequentially flows through the third interface, the diode in the PMOS transistor Q4, the closed PMOS transistor Q3, and the first interface to the first device, thereby supplying power to the first device.

Similarly, if the control module 204 monitors that the second device is connected, a second closing control signal is output to the gates of the PMOS transistor Q6 and the PMOS transistor Q7, where the second closing control signal is the gate driving voltage of the PMOS transistor Q6 and the PMOS transistor Q7, and since the PMOS transistor Q6 and the PMOS transistor Q7 are two PMOS transistors connected in series in reverse, the current can be blocked in two directions, so that the voltage of the gates of the PMOS transistor Q6 and the PMOS transistor Q7 needs to be controlled by the second closing control signal to be greater than the voltage of the sources, and the PMOS transistor Q6 and the PMOS transistor Q7 are triggered to be closed, so that the mentioned second power supply path can be conducted, and thus the power supply voltage output by the power supply device flows through the third interface, the diode in the PMOS transistor Q4, the voltage adjustment module, the closed PMOS transistor Q6, the PMOS transistor Q7, and the second interface to the second device, so as to supply power to the second device.

Referring to fig. 7, another structural diagram of a power supply connection device according to an embodiment of the present application is shown.

As shown in fig. 7, another schematic structural diagram of the power supply connection device according to the embodiment of the present application may further include:

the fourth switch 501 includes a PMOS transistor Q1 and a PMOS transistor Q2, the voltage regulating module 404 includes a voltage reduction circuit 4041, a fifth switch 4042 and a voltage boost circuit 4043, and the fifth switch 4042 includes a PMOS transistor Q5; the drain of the PMOS transistor Q5 is connected to the step-down circuit 4041, and the source is connected to the step-up circuit 4043; the drain of the PMOS transistor Q1 is connected to the first interface 201, the source is connected to the source of the PMOS transistor Q2, the drain of the PMOS transistor Q2 is connected to the connection point of the PMOS transistor Q5 and the voltage boost circuit 4043, and the gates of the PMOS transistor Q1 and the PMOS transistor Q2 are connected to the control module 204.

When the first device is connected to the first interface 201 and the third interface 203 is not connected to the power supply device, the PMOS transistor Q3 is turned on, so that the first device supplies power to the control module 204 through the PMOS transistor Q3, the step-down circuit 4041, the PMOS transistor Q5, and the step-up circuit 4043.

After the control module 204 is powered by the first device, the control module 204 is configured to control the PMOS transistor Q1 and the PMOS transistor Q2 to close, so as to establish a third power supply path from the first interface 201, the PMOS transistor Q1 and the PMOS transistor Q2, the voltage boost circuit 4043, the PMOS transistor Q6 and the PMOS transistor Q7 to the second interface 202.

When the control module 204 detects that the power supply device is connected to the third interface 203, the control module 204 is configured to control to disconnect the PMOS transistor Q1 and the PMOS transistor Q2, and the PMOS transistor Q6 and the PMOS transistor Q7, so as to disconnect the third power supply path.

The control module 204 is configured to close the PMOS transistor Q3, the PMOS transistor Q6, and the PMOS transistor Q7 to establish a first supply path and a second supply path, such as described above with respect to fig. 6.

In this embodiment, as shown in fig. 7, if the first device first accesses the first interface, the control module 204 serving as the power supply slave triggers the first device to serve as a power supply end, so that the first device can supply power to the control module 204. Specifically, since the PMOS transistor Q3 and the PMOS transistor Q5 have parasitic diodes and are in the off state, the charging process for the control module 204 is thus implemented mainly by the first device switching in a supply voltage that will output 5V, the 5V supply voltage flows through the parasitic diode in the PMOS transistor Q3, so that the supply voltage is conducted in one direction at the PMOS transistor Q3, and flows into a voltage reduction circuit to pull down the 5V power supply voltage to 4V voltage after the voltage reduction circuit is started to work, the 4V voltage continues to flow into the parasitic diode in the PMOS transistor Q5, so that the voltage also realizes unidirectional conduction at the PMOS transistor Q5, and finally the 4V voltage flows into the voltage boosting circuit, after the boost circuit is started to work, the 4V voltage is pulled up to 5V voltage, and the 5V voltage is in a stable state relative to the 5V power supply voltage output by the first device, so that the control module can receive the stable 5V voltage to start to work.

After the power is supplied by the first device, if it is detected that the power supply device is not connected to the third interface, the control module 204 needs the first device to supply power to the second device. Therefore, the control module 204 is required to control the establishment of a third power supply path from the first interface to the second interface, so that the first device supplies power to the second device through the third power supply path.

Specifically, the power supply process of the second device is mainly realized in that the control module 204 in a working state controls the gate voltage of the PMOS transistor Q1 and the gate voltage of the PMOS transistor Q2, that is, the voltage of the control gate of the control module 204 is required to be greater than the voltage of the source, so as to trigger the PMOS transistor Q1 and the PMOS transistor Q2 to be in a closed state; after the PMOS transistor Q1 and the PMOS transistor Q2 are closed, the control module 204 further needs to trigger the PMOS transistor Q6 and the PMOS transistor Q7 to be in a closed state by controlling the gate voltage of the PMOS transistor Q6 and the gate voltage of the PMOS transistor Q7, that is, the control module 204 needs to control the gate voltage to be greater than the source voltage, and since the boost circuit is in a conductive state when the first device supplies power to the control module 204, the conduction of the third power supply path is realized, so that the voltage output by the first device is supplied to the second device through the first interface, the closed PMOS transistor Q1 and the PMOS transistor Q2, the boost circuit, the closed PMOS transistor Q6 and the PMOS transistor Q7, and the second interface.

It should be noted that the PMOS transistor Q1 and the PMOS transistor Q2 are two PMOS transistors connected in series in an inverted manner, and the purpose of the inverted series connection is to mainly prevent the input voltage of the boost circuit from flowing in the first device in the inverted manner when the output voltage of the first device flows through the boost circuit through the PMOS transistor Q1 and the PMOS transistor Q2, so as to protect the lithium battery in the first device.

It should be further noted that, after the control module 204 controls the PMOS transistor Q1 and the PMOS transistor Q2 to be closed, a closing signal may be output to the voltage-reducing circuit, where the closing signal may open the voltage-reducing circuit, or the control module 204 controls the voltage of the voltage-reducing circuit to be lower than 1.8V, and at this time, if the voltage value of the voltage-reducing circuit is lower than 1.8V, the voltage-reducing circuit is opened. The purpose of turning off the voltage reducing circuit is mainly that after the control module 204 controls the PMOS transistor Q1 and the PMOS transistor Q2 to be closed, the first device can still charge the control module 204 through the first interface, the closed PMOS transistor Q1 and the closed PMOS transistor Q2, and the voltage increasing circuit, so that the original path through the voltage reducing circuit does not need to be used for power supply.

When the control module 204 is powered by the first device, if the control module 204 monitors that the power supply device is connected to the third interface, the power supply device may be used to supply power to the first device and the second device, so that the control module 204 needs to control the establishment of the first power supply path and the second power supply path to supply power to the first device and the second device, respectively. That is, after receiving the power supply from the power supply device, the control module 204 needs to control the third power supply path to be disconnected, so that the first device does not need to supply power to the second device any more.

In this embodiment, the process of specifically disconnecting the third power supply path is mainly that the control module 204 controls the gate voltages of the PMOS transistor Q6 and the PMOS transistor Q7 to be less than the source voltage, so that the PMOS transistor Q6 and the PMOS transistor Q7 are triggered to be in a disconnected state, and therefore the output voltage of the first device cannot be conducted at the PMOS transistor Q6 and the PMOS transistor Q7, so that the first device does not charge the second device after the power supply device is connected.

Therefore, after the control module 204 controls the disconnection of the third power supply path, the power required by the second device and the first device can be obtained from the power supply device. That is to say, after the power supply device is connected to the third interface, a 5V power supply voltage may be output, the 5V power supply voltage firstly passes through a parasitic diode in the PMOS transistor Q4 as shown in fig. 7, and then the voltage of the 5V power supply is reduced to 4V by the voltage reduction circuit, and then the voltage of the 4V power supply voltage realizes unidirectional conduction through the parasitic diode in the PMOS transistor Q5, flows into the voltage boost circuit and is pulled to a stable 5V voltage by the voltage boost circuit, so that the stable 5V voltage may flow into the control module, and the control module 204 starts operation after receiving the power supply of the power supply device.

After the control module 204 receives power supply from the power supply device, the control module 204 may control the PMOS transistor Q1 and the PMOS transistor Q2 to be disconnected by controlling the gate voltage of the PMOS transistor Q1 to be less than the source voltage and the gate voltage of the PMOS transistor Q2 to be less than the source voltage, and after the PMOS transistor Q21 and the PMOS transistor Q2 are disconnected, the control module 204 further needs to control the PMOS transistor Q3, the PMOS transistor Q6, and the PMOS transistor Q7 to be closed, and the specific implementation process may refer to fig. 6, so as to respectively control and establish the first power supply path and the second power supply path as described in fig. 6 to charge the first device and the second device.

It should be noted that the control module can control the disconnection of the PMOS transistor Q1 and the PMOS transistor Q2 only after the voltage reduction circuit is turned on, which is mainly because the third power supply path is controlled to be disconnected by disconnecting the PMOS transistor Q3, and at this time, if the power supply device is not connected to the third interface, the first device is still required to supply power to the control module 204.

Referring to fig. 8, another structural diagram of a power supply connection device according to an embodiment of the present application is shown.

As shown in fig. 8, another schematic structural diagram of the power supply connection device according to the embodiment of the present application may further include: a forward and reverse plug adaptation module 801; the control module 204 includes a first control unit 2041 and a second control unit 2042; the first control unit 2041 is configured to detect positive and negative interpolation information of the first device, and the second control unit 2042 is configured to detect positive and negative interpolation information of the second device;

the second control unit 2042 sends the positive and negative interpolation information of the second device to the first control unit 2041; the first control unit 2041 sends the forward and backward insertion information of the first device and the forward and backward insertion information of the second device to the forward and backward insertion adaptation module 801, so that the forward and backward insertion adaptation module 801 is used for controlling the forward and backward insertion adaptation adjustment of the first device and the second device, and the first device performs data communication to the second device.

In this embodiment, the control module mainly includes two control units, and the first control unit and the second control unit are connected through an inter-integrated-circuit (I2C). The first control unit is mainly used for detecting positive and negative insertion information of first equipment accessed to the first interface, and the second control unit is mainly used for detecting positive and negative insertion information of second equipment accessed to the second interface. In this embodiment, the first control unit mainly plays a role of master control, and the forward and backward insertion adaptation module can be mainly used for performing forward and backward insertion adaptation on the interfaces of the first device and the second device, and can switch the signals of the interfaces, and the forward and backward insertion information represents the signal attribute of the interfaces, so that the forward and backward insertion information of the first device and the second device is sent to the forward and backward insertion adaptation module by the first control unit for adaptation operation, and only the forward and backward insertion information of the first device and the second device is adjusted to be consistent output signals, so that data communication can be performed between the first device and the second device.

The first control unit and the second control unit may be CC logic control chips, and the control module may include a plurality of control units, and the specific number is not limited. The forward/backward adaptive module may be a Multiplexer (MUX), and the like, and is not limited specifically.

For example: assuming that the positive and negative interpolation information of the first device is 1, 0, 1, and the positive and negative interpolation information of the second device is 0, 1, 0, 1; at this moment, the forward and reverse insertion adaptation module can reversely match the first two signals 1 and 0 of the first equipment with the first two signals 0 and 1 of the second equipment, so that the first signal of the forward and reverse insertion information of the first equipment is paired with the second signal of the forward and reverse insertion information of the second equipment, the second signal of the forward and reverse insertion information of the first equipment is paired with the first signal of the forward and reverse insertion information of the second equipment, and the latter two signals of the forward and reverse insertion information of the first equipment and the forward and reverse insertion information of the second equipment are respectively paired, so that data communication can be carried out between the first equipment and the second equipment.

Referring to fig. 9, another structural diagram of the power supply connection device according to the embodiment of the present application is shown.

As shown in fig. 9, another schematic structural diagram of the power supply connection device according to the embodiment of the present application may further include: the extension module 901 is configured to extend a detection signal in the power supply device, so that the extended detection signal is connected with the first device, the second device, and the power supply connection device to form an N-segment closed ground loop, where the closed ground loop is configured to send an alarm when the power supply device detects that any one segment of the loop is disconnected, the alarm is used for preventing theft of the first device, the second device, or the power supply connection device, and N is a positive integer greater than 3.

In this embodiment, the power supply device may support an anti-theft function, and may also include an anti-theft control chip and a buzzer. As long as a condition is satisfied by the expansion module, some event may occur, for example: it is high if there is a high level in the plurality of inputs and low if all inputs are low.

The anti-theft control chip in the power supply equipment can lead out two detection signals with double insurance, such as: a first detection signal and a second detection signal; expanding the signals into 2 expanding signals respectively through an expanding module in the power supply connecting device, for example, a first detection signal can be expanded into a first expanding signal and a second expanding signal, and a second detection signal can be expanded into a third expanding signal and a fourth expanding signal; then, the 4 extension signals are grounded pairwise through the first equipment and the second equipment respectively, so that a closed ground loop is formed among the anti-theft control chip, the power supply connecting device, the first equipment and the second equipment, when any section of the closed ground loop is disconnected, the buzzer can send out an alarm signal, and therefore the anti-theft of the first equipment, the second equipment or the power supply connecting device can be achieved.

For example: the first extended signal and the third extended signal are grounded through first equipment, and the second extended signal and the fourth extended signal are grounded through second equipment; after the power supply equipment, the first equipment and the second equipment are all connected into the device, because the first equipment can be ensured not to be stolen only when the first extension signal and the third extension signal are both at low level, and in a similar way, the second equipment can be ensured not to be stolen only when the second extension signal and the fourth extension signal are both at low level, and the power supply connecting device can be ensured not to be stolen only when the first detection signal and the second detection signal are not disconnected, so that the anti-theft control chip can judge whether the first equipment and the second equipment exist by detecting the levels of the 4 extension signals and judge whether the power supply connecting device exists by the 2 detection signals.

If the anti-theft control chip detects that one of the extension signals is at a high level or one of the detection signals is absent, a detection result is determined to be sent to the buzzer, the detection result indicates that the first equipment, the second equipment or the power supply connection device are disconnected, but specifically which equipment is disconnected can be determined without determination, and the buzzer starts alarming according to the detection result as long as one equipment is disconnected, so that a user is prompted that the equipment has the risk of being stolen.

The above-described expansion module may be an or gate or other devices that can be used to expand signals, and is not limited in particular. The embodiment of the present application is described by taking an or gate as an example, please refer to fig. 10 for understanding, and fig. 10 is another schematic structural diagram of the power supply connection device provided in the embodiment of the present application.

As shown in fig. 10, another schematic structural diagram of the power supply connection device according to the embodiment of the present application may further include: the expansion module 901 comprises a first or gate 1001 and a second or gate 1002, wherein the first or gate 1001 and the second or gate 1002 are used for expanding a detection signal in the power supply device, so that the expanded detection signal is respectively connected with the first device, the second device and the power supply connecting device to form N sections of closed ground loops, the closed ground loops are used for giving an alarm when the power supply device detects that any one section of loops is disconnected, the alarm is used for preventing theft of the first device, the second device or the power supply connecting device, and N is a positive integer greater than 3.

In this embodiment, the anti-theft control chip in the power supply device may extract two detection signals with double insurance, such as: a first detection signal and a second detection signal; the first detection signal may be expanded into a first expanded signal and a second expanded signal by a first or gate 1001 in the expansion module, and the second detection signal may be expanded into a third expanded signal and a fourth expanded signal by a second or gate 1002 in the expansion module; the extended 4 extended signals are grounded through the first device and the second device respectively, for example: the first extension signal and the third extension signal are grounded through the first device, and the second extension signal and the fourth extension signal are grounded through the second device, so that a closed ground loop is formed among the anti-theft control chip, the power supply connection device, the first device and the second device, if any section of the closed ground loop is disconnected, a buzzer in the power supply device can send out an alarm signal, and therefore the anti-theft of the first device, the second device or the power supply connection device can be achieved, and the specific implementation process can be understood by referring to fig. 9.

It should be noted that the power supply device supporting the anti-theft function described with reference to fig. 9 and 10 is applicable to an application scenario such as a retail display stand, and implements anti-theft of each device.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed power supply connection device may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power supply connection device, comprising:

the device comprises a first interface, a second interface, a third interface and a control module;

the first interface is connected with first equipment, the second interface is connected with second equipment, and the third interface is connected with power supply equipment;

when the power supply device is connected to the third interface, the control module is configured to control establishment of a first power supply path from the third interface to the first interface and a second power supply path from the third interface to the second interface, so that when the first device is connected to the first interface, the power supply device supplies power to the first device through the first power supply path, and when the second device is connected to the second interface, the power supply device supplies power to the second device through the second power supply path;

the power supply connection device further includes:

the voltage regulation circuit comprises a first switch, a second switch, a third switch and a voltage regulation module;

the first end of the first switch is connected with the third interface, the second end of the first switch is connected with the voltage regulation module, and the third end of the first switch is connected with the first end of the second switch;

the second end of the second switch is connected with the first interface, and the third end of the second switch is connected with the control module;

the first end of the third switch is connected with the second interface, the second end of the third switch is connected with the voltage regulation module, and the third end of the third switch is connected with the control module;

when the power supply equipment is connected to the third interface, the first switch is closed, so that the power supply equipment supplies power to the control module through the first switch and the voltage regulation module;

the control module is used for controlling the second switch to be closed so as to establish the first power supply path from the third interface, the first switch and the second switch to the first interface;

the control module is configured to control the third switch to close to establish the second power supply path from the first switch, the voltage regulation module, and the third switch to the second interface.

2. Power supply connection device according to claim 1,

when the first device is connected to the first interface and the power supply device is not connected to the third interface, the control module is used for controlling to establish a third power supply path from the first interface to the second interface, so that when the second device is connected to the second interface, the first device supplies power to the second device through the third power supply path.

3. Power supply connection device according to claim 2,

when the power supply equipment is connected to the third interface, the control module is used for controlling to disconnect the third power supply path and establish the first power supply path and the second power supply path.

4. Power supply connection device according to claim 3,

when the power supply equipment pulls out the third interface, the control module is used for controlling to disconnect the first power supply path and the second power supply path and establish the third power supply path.

5. The power supply connection device according to claim 2, further comprising a fourth switch, wherein the voltage regulation module comprises a voltage reduction circuit, a fifth switch, and a voltage boost circuit, and wherein the voltage reduction circuit is connected to the voltage boost circuit through the fifth switch;

a first end of the fourth switch is connected with the first interface, a second end of the fourth switch is connected to a connection point of the fifth switch and the boost circuit, and a third end of the fourth switch is connected with the control module;

when the first device is connected to the first interface and the power supply device is not connected to the third interface, the second switch is closed, so that the first device supplies power to the control module through the second switch and the voltage regulation module;

the control module is used for controlling the fourth switch to be switched on and switched off so as to establish the third power supply path from the first interface, the fourth switch, the boost circuit and the third switch to the second interface.

6. Power supply connection device according to claim 5,

when the power supply equipment is connected to the third interface, the control module is used for controlling to disconnect the fourth switch and the third switch so as to disconnect the third power supply path;

the control module is used for controlling the second switch and the third switch to be closed so as to establish the first power supply path and the second power supply path.

7. Power supply connection device according to claim 6,

when the power supply equipment pulls out the third interface, the control module is used for controlling to open the second switch and the third switch so as to open the first power supply path and the second power supply path and controlling to close the second switch, the fourth switch and the third switch so as to establish the third power supply path.

8. The power supply connection device according to any one of claims 1 to 7, further comprising a positive and negative insertion adapter module,

the control module comprises a first control unit and a second control unit;

the first control unit is used for detecting the positive and negative interpolation information of the first equipment, and the second control unit is used for detecting the positive and negative interpolation information of the second equipment;

the second control unit sends the forward and backward interpolation information of the second equipment to the first control unit;

the first control unit sends the forward and reverse insertion information of the first equipment and the forward and reverse insertion information of the second equipment to the forward and reverse insertion adaptation module, so that the forward and reverse insertion adaptation module is used for controlling the forward and reverse insertion adaptation adjustment of the first equipment and the second equipment, and the first equipment carries out data communication to the second equipment.

9. Power supply connection device according to one of claims 1 to 7, characterized in that it further comprises an expansion module,

the extension module is used for extending the detection signal in the power supply equipment, so that the extended detection signal is respectively connected with the first equipment, the second equipment and the power supply connecting device to form an N-section closed loop, the N-section closed loop is used for giving an alarm when the power supply equipment detects that any one section of loop is disconnected, the alarm is used for preventing theft of the first equipment, the second equipment or the power supply connecting device, and N is an integer greater than 3.