CN213847095U - Dormancy circuit and lighting device - Google Patents
Dormancy circuit and lighting device Download PDFInfo
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- CN213847095U CN213847095U CN202022207472.8U CN202022207472U CN213847095U CN 213847095 U CN213847095 U CN 213847095U CN 202022207472 U CN202022207472 U CN 202022207472U CN 213847095 U CN213847095 U CN 213847095U
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Abstract
The utility model relates to a dormancy circuit, it is connected between power and load, and the positive connection of load of power, power negative pole and load negative pole are connected, and this dormancy circuit includes: the power supply comprises a switch unit, a protection unit and a dormancy control unit, wherein the switch unit is connected between the negative pole of a power supply and the negative pole of a load; the protection unit is connected with the positive electrode of the power supply and the negative electrode of the power supply and is connected with the switch unit, and the protection unit is used for controlling the switch unit to be switched on or switched off; the sleep control unit is connected with the protection unit and is used for receiving an external control signal; when the power supply voltage is lower than the preset over-discharge protection voltage, the protection unit controls the switch unit to be switched off; and the protection unit controls the switch unit to be switched off when responding to an external control signal. Implement the utility model discloses, can cross the disconnection and be connected with external circuit when power voltage crosses lowly or the power does not use, make the power consumption of power slow down to avoid the lower condition of voltage to appear in the power as far as possible, in order to guarantee power life.
Description
Technical Field
The utility model relates to an integrated circuit field, especially a dormancy circuit and lighting device.
Background
Power supply damage is likely to occur during use and storage of electronic products. Firstly, some users still use the power supply when the power supply reports low power until the electronic product is turned off, which easily causes the voltage of the power supply to be too low to charge the power supply; secondly, under the conditions of storage, shutdown or standby of the electronic product, the circuit on the electronic product still consumes power, sometimes until the power of the power supply is exhausted, the user does not charge the electronic product, and therefore the voltage of the power supply is easy to be too low, and the electronic product cannot be charged.
The current general method is to set a protection unit in the circuit, and when the protection unit detects that the power voltage is lower than the preset over-discharge protection voltage, the power supply is controlled to be disconnected with the circuit, so that the circuit enters a sleep power-off state, the loss of the power supply is reduced, and the situation that the power voltage is too low is prevented. However, in this way, the connection between the power supply and the circuit can be cut off only when the power supply capacity is lower than the preset over-discharge protection voltage, and the power supply can be in a low-voltage discharge state for a long time in the period from the low power supply capacity to the time when the protection unit cuts off the connection between the power supply and the circuit, which greatly affects the service life of the power supply and is easy to damage the power supply. Therefore, it is necessary to design a sleep circuit to cut off the power output when the power voltage of the electronic product is too low or not used, so as to ensure the life of the power supply.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a dormancy circuit and lighting device, aim at solving current electronic product and not using or mains voltage cross the problem that can not in time cut off power output when low.
The utility model provides a technical scheme that its technical problem adopted is: in a first aspect, a sleep circuit is provided, which is connected between a power source and a load, the power source anode being connected to the load anode, and the power source cathode being connected to the load cathode, the sleep circuit comprising: the switch unit is connected between the negative pole of the power supply and the negative pole of the load; the protection unit is connected with the positive electrode of the power supply and the negative electrode of the power supply and is connected with the switch unit, and the protection unit is used for controlling the switch unit to be switched on or switched off; the sleep control unit is connected with the protection unit and used for receiving an external control signal; when the power supply voltage is lower than a preset over-discharge protection voltage, the protection unit controls the switch unit to be switched off; and the protection unit controls the switch unit to be switched off when responding to an external control signal.
Further, the sleep control unit includes: the system comprises a signal receiving subunit, a triggering subunit and a singlechip, wherein the signal receiving subunit is used for receiving an external control signal; the trigger subunit is connected with the protection unit and the power supply anode; the single chip microcomputer is connected between the protection unit and the signal receiving subunit, and the single chip microcomputer is used for controlling the trigger subunit to be conducted according to an external control signal.
Furthermore, the signal receiving subunit includes an infrared receiving head, a first capacitor, a first resistor and a second resistor, one end of the first capacitor is connected to the power end of the infrared receiving head and is connected to one end of the first resistor, the other end of the first resistor is connected to the positive pole of the power supply, the other end of the first capacitor is connected to the ground end of the infrared receiving head, the control end of the infrared receiving head is connected to one end of the second resistor, the other end of the second resistor is connected to the single chip microcomputer, the power end of the single chip microcomputer is connected to the positive pole of the power supply, and the ground end of the single chip microcomputer is grounded.
Further, the trigger subunit includes triode and third resistance, the collecting electrode of triode with the positive pole of power is connected, the projecting pole of triode with the protection unit is connected and with the one end of third resistance is connected, the other end of third resistance with the negative pole of power is connected, the base of triode with the dormancy control end of singlechip is connected.
Further, the protection unit includes: the power supply comprises a collecting subunit and a power supply protection chip, wherein the collecting subunit is connected with the positive electrode of the power supply and is used for collecting the power supply voltage; the power protection chip with gather the subunit and connect and with the switch unit is connected, the power protection chip is used for power supply voltage is controlled when being less than predetermined overdischarge protection voltage the switch unit disconnection to and control when receiving external control signal the switch unit disconnection.
Furthermore, the protection unit further comprises a filtering subunit, which is connected with the acquisition subunit and connected with the negative electrode of the power supply.
Furthermore, the filtering subunit includes a second capacitor, one end of which is connected to the collecting subunit, and the other end of which is connected to the negative electrode of the power supply.
Further, the switch unit includes a first switch tube, an output end of the first switch tube is connected to a negative electrode of the power supply, a control end of the first switch tube is connected to a discharge control end of the power protection chip, and an input end of the first switch tube is connected to a negative electrode of the load.
Further, the first switch tube is a first N-channel MOS tube, a source electrode of the first N-channel MOS tube is connected to a negative electrode of the power supply, a gate electrode of the first N-channel MOS tube is connected to a discharge control end of the power supply protection chip, and a drain electrode of the first N-channel MOS tube is connected to a negative electrode of the load.
In a second aspect, there is provided a lighting device comprising: the light source comprises a power supply, a light source, a controller and the dormancy circuit, wherein the dormancy circuit is connected between the power supply and the light source, and the controller is used for sending the external control signal to control the dormancy circuit to enter dormancy.
The utility model has the advantages that through the arrangement of the protection unit, the switch unit and the dormancy control unit, when the protection unit detects that the power supply voltage is lower than the preset over-discharge protection voltage, the protection unit controls the switch unit to be disconnected; and the protection unit controls the switch unit to be disconnected when responding to an external control signal, so that the power supply is disconnected from the switch unit, the dormancy control unit and the load, and the power supply is disconnected from an external circuit and the load. Therefore, by the two ways of disconnecting the power supply from the external circuit and the load, the power supply can automatically stop outputting in a low-voltage state and stop outputting in a normal voltage state through external control, so that the power consumption of the power supply is slowed down, the condition that the voltage of the power supply is low is avoided as much as possible, and the service life of the power supply is ensured.
Drawings
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings and examples, wherein:
fig. 1 is a block diagram of the sleep circuit of the present invention;
fig. 2 is a schematic structural diagram of the sleep circuit of the present invention;
fig. 3 is a schematic structural diagram of a signal receiving subunit in the sleep circuit of the present invention;
fig. 4 is a schematic structural diagram of a single chip in the sleep circuit of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Referring to fig. 1-2, the present invention provides a sleep circuit 10, which is connected between a power source 20 and a load 30, wherein a positive terminal of the power source 20 is connected to a positive terminal of the load 30, a negative terminal of the power source 20 is connected to a negative terminal of the load 30, and the sleep circuit 10 includes: a switching unit 100, a protection unit 200 and a sleep control unit 300, the switching unit 100 being connected between the negative pole of the power source 20 and the negative pole of the load 30; the protection unit 200 is connected with the positive electrode of the power supply 20 and the negative electrode of the power supply 20, and is connected with the switch unit 100, and the protection unit 200 is used for controlling the switch unit 100 to be switched on or switched off; the sleep control unit 300 is connected with the protection unit 200, and the sleep control unit 300 is used for receiving an external control signal; when the voltage of the power supply 20 is lower than the preset over-discharge protection voltage, the protection unit 200 controls the switch unit 100 to be switched off; and the protection unit 200 controls the switching unit 100 to be turned off when responding to an external control signal.
Through the protection unit 200, the switch unit 100 and the sleep control unit 300, when the protection unit 200 detects that the voltage of the power supply 20 is lower than the preset over-discharge protection voltage, the protection unit 200 controls the switch unit 100 to be disconnected, so that the power supply 20 is disconnected from the switch unit 100, the sleep control unit 300 and the load 30, the output of the power supply 20 can be greatly reduced, the output of the power supply 20 in a low-voltage state can be effectively cut off, and the service life of the power supply 20 is ensured.
Furthermore, after the sleep control unit 300 receives the external control signal, the sleep control unit 300 controls the switch unit 100 to be disconnected by the protection unit 200, so that the power supply 20 is disconnected from the switch unit 100, the sleep control unit 300 and the load 30, thereby greatly reducing the output of the power supply 20, and avoiding the situation that the voltage of the power supply 20 is low as much as possible, so as to ensure the service life of the power supply 20.
Therefore, by cutting off the connection between the power supply 20 and the external circuit and the load 30, the power supply 20 can automatically stop outputting in a low voltage state or stop outputting in a normal voltage state through external control, so as to avoid the situation that the voltage of the power supply 20 is low as much as possible and ensure the service life of the power supply 20.
Specifically, the predetermined over-discharge protection voltage is typically 90% of the nominal voltage of the power supply 20. For example, the nominal voltage of the power source 20 is 5V, and when the protection unit 200 detects that the voltage of the power source 20 is lower than 4.5V, it sends out a turn-off signal to control the switch unit 100 to be turned off, so that the power source 20 is disconnected from the switch unit 100, the sleep control unit 300, and the load 30.
Further, in this embodiment, the external control signal is a signal sent from a controller, and may be, for example, a remote controller, a mobile phone, a tablet computer, or the like.
In one embodiment, referring to fig. 2-4, the sleep control unit 300 includes: the device comprises a signal receiving subunit 301, a triggering subunit 302 and a single chip microcomputer 303, wherein the signal receiving subunit 301 is used for receiving an external control signal; the trigger subunit 302 is connected with the protection unit 200 and the positive pole of the power supply 20; the single chip microcomputer 303 is connected between the protection unit 200 and the signal receiving subunit 301, and the single chip microcomputer 303 is used for controlling the triggering subunit 302 to be conducted according to an external control signal. In this embodiment, the signal receiving subunit 301 is configured to receive an external control signal, and send a control signal to the single chip microcomputer 303 after receiving the external control signal, the single chip microcomputer 303 sends a sleep trigger signal after receiving the control signal, the trigger subunit 302 sends a sleep signal after receiving the sleep trigger signal, and finally the protection unit 200 controls the switch unit 100 to be turned off after receiving the sleep signal, so that the power supply 20 is disconnected from the switch unit 100, the signal receiving subunit 301, the trigger subunit 302, the single chip microcomputer 303, and the load 30, thereby achieving the purpose of reducing power consumption of the power supply 20.
In one embodiment, referring to fig. 3-4, the signal receiving subunit 301 includes an infrared receiving head, a first capacitor, a first resistor, and a second resistor, one end of the first capacitor is connected to a power end of the infrared receiving head and is connected to one end of the first resistor, the other end of the first resistor is connected to the positive terminal of the power supply 20, the other end of the first capacitor is connected to a ground end of the infrared receiving head and is grounded, a control end of the infrared receiving head is connected to one end of the second resistor, the other end of the second resistor is connected to the one end of the single-chip microcomputer 303, the power end of the single-chip microcomputer 303 is connected to the positive terminal of the power supply 20, and the ground end of the single-chip microcomputer 303 is grounded.
In this embodiment, the signal receiving subunit 301 is selected as an infrared receiving head, which is cheap and mature in scheme, so that certain development cost can be saved. It is understood that the signal receiving subunit 301 may also be a bluetooth module or a WiFi module, which may be selected according to actual requirements. Further, the single chip microcomputer 303 is used for converting infrared signals received by the infrared receiving head into electrical signals recognizable by the circuit.
In one embodiment, referring to fig. 2, the trigger subunit 302 includes a transistor and a third resistor, a collector of the transistor is connected to the positive terminal of the power supply 20, an emitter of the transistor is connected to the protection unit 200 and to one end of the third resistor, the other end of the third resistor is connected to the negative terminal of the power supply 20, and a base of the transistor is connected to the sleep control terminal of the single chip microcomputer 303. In this embodiment, the third resistor is used for collecting the voltage of the power source 20 to feed back to the protection chip. The triode is used as a switch, and is communicated or cut off after receiving a dormancy trigger signal sent by the singlechip 303, has the advantages of high reaction speed and long service life, and can effectively ensure the service life of the dormancy circuit 10. It is understood that the transistor may be replaced by another switching tube, such as a MOS tube, after the circuit is changed accordingly. Preferably, in order to prevent the transistor from being damaged by excessive current, a fifth resistor is connected between the base of the transistor and the sleep control terminal of the single chip microcomputer 303, so as to limit the current.
In one embodiment, referring to fig. 2, the protection unit 200 includes: the power supply protection circuit comprises a collecting subunit and a power supply protection chip, wherein the collecting subunit is connected with the anode of the power supply 20 and is used for collecting the voltage of the power supply 20; the power protection chip is connected with the acquisition subunit and connected with the switch unit 100, and the power protection chip is used for controlling the switch unit 100 to be disconnected when the voltage of the power supply 20 is lower than a preset over-discharge protection voltage and controlling the switch unit 100 to be disconnected when an external control signal is received. In this embodiment, the collecting unit is a fourth resistor, one end of the fourth resistor is connected to the positive electrode of the power supply 20, the other end of the fourth resistor is connected to the power supply end of the power supply protection chip, the ground terminal of the power supply protection chip is connected to the negative electrode of the power supply 20, and the current detecting end of the power supply protection chip is connected to the emitter of the triode. The fourth resistor is used for collecting the voltage of the power supply 20, so that the protection unit 200 can collect the voltage of the power supply 20. The current detection end of the power supply protection chip is connected with the emitting electrode of the triode, so that the power supply protection chip can receive a potential signal sent by the triode.
In one embodiment, referring to fig. 2, the protection unit 200 further comprises a filtering subunit connected to the collecting subunit and to the negative terminal of the power supply 20. The filtering subunit is used for filtering alternating current components in the power supply, so that the current flowing into the power supply protection chip is smoother.
In one embodiment, the filtering subunit includes a second capacitor, one end of which is connected to the collecting subunit, and the other end of which is connected to the negative electrode of the power supply. In this embodiment, one end of the second capacitor is connected to the other end of the fourth resistor, and the other end of the second capacitor is connected to the ground terminal of the power protection chip. The ac component of the power supply 20 can be filtered out by the filtering function of the second capacitor, so that the current received by the power supply protection chip is smoother, and the service life of the power supply protection chip is prolonged.
In one embodiment, referring to fig. 2, the switch unit 100 includes a first switch tube, an output terminal of the first switch tube is connected to a negative electrode of the power supply 20, a control terminal of the first switch tube is connected to a discharge control terminal of the power protection chip, and an input terminal of the first switch tube is connected to a negative electrode of the load 30. In this embodiment, the first switch tube is used as the switch unit 100, and the first switch tube can be pressurized or depressurized to control the on or off of the first switch tube, so that the circuit can be automatically controlled.
In one embodiment, referring to fig. 2, the first switch transistor is a first N-channel MOS transistor, a source of the first N-channel MOS transistor is connected to a negative electrode of the power supply 20, a gate of the first N-channel MOS transistor is connected to a discharge control end of the power protection chip, and a drain of the first N-channel MOS transistor is connected to a negative electrode of the load 30. In this embodiment, when the power protection chip detects that the voltage of the power supply 20 is lower than the preset voltage or receives a trigger signal, a turn-off signal is sent out, and the turn-off signal turns off the first N-channel MOS transistor, so that the switch unit 100 is turned off, and the power supply 20 is disconnected from the switch unit 100, the sleep control unit 300, and the load 30. When the power supply 20 is charged, the first N-channel MOS transistor is turned on again by the external voltage, and the sleep circuit 10 resumes normal operation. It is understood that in different circuit designs, a P-channel MOS transistor or a triode may be used, and only the connection structure of the circuit needs to be changed.
Preferably, referring to fig. 1, the switching unit 100 further includes a second N-channel MOS transistor, a source of the second N-channel MOS transistor is connected to a drain of the first N-channel MOS transistor, a gate of the second N-channel MOS transistor is connected to the charge control terminal of the power protection chip, and a drain of the second N-channel MOS transistor is connected to the other end of the third resistor. In this embodiment, the second N-channel MOS transistor is used when the power supply 20 is charging, the power protection chip detects that the voltage of the power supply 20 exceeds a predetermined overcharge protection voltage, which is 120% of the nominal voltage of the power supply 20, and at this time, the power protection chip controls the second N-channel MOS transistor to be turned off, so that the power supply 20 is disconnected from the charging power supply 20, thereby achieving the overcharge protection effect.
The utility model also provides a lighting device, it includes: the light source control circuit comprises a power supply 20, a light source, a controller and the dormancy circuit 10, wherein the dormancy circuit 10 is connected between the power supply 20 and the light source, and the controller is used for sending an external control signal to control the dormancy circuit 10 to enter dormancy. By arranging the dormancy circuit 10 on the lighting device, the connection between the power supply 20 and an external circuit can be cut off when the voltage of the power supply 20 of the lighting device is too low, so that the electric quantity consumption of the power supply 20 is slowed; and when the lighting device is not used, the controller can cut off the connection between the power supply 20 and an external circuit, so that the electricity consumption of the power supply 20 is slowed, and the condition that the voltage of the power supply 20 is lower is avoided as much as possible.
It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and all such modifications and alterations should fall within the scope of the appended claims.
Claims (10)
1. A sleep circuit connected between a power source and a load, the power source anode being connected to the load anode and the power source cathode being connected to the load cathode, the sleep circuit comprising:
a switching unit connected between the power source negative electrode and the load negative electrode;
the protection unit is connected with the positive electrode of the power supply and the negative electrode of the power supply and is connected with the switch unit, and the protection unit is used for controlling the switch unit to be switched on or switched off;
the dormancy control unit is connected with the protection unit and used for receiving an external control signal;
when the power supply voltage is lower than a preset over-discharge protection voltage, the protection unit controls the switch unit to be switched off; and the protection unit controls the switch unit to be switched off when responding to an external control signal.
2. The sleep circuit according to claim 1, wherein the sleep control unit comprises:
the signal receiving subunit is used for receiving an external control signal;
a trigger subunit connected to the protection unit and the power supply positive electrode;
and the single chip microcomputer is connected between the protection unit and the signal receiving subunit, and is used for controlling the conduction of the trigger subunit according to an external control signal.
3. The sleep circuit according to claim 2, wherein the signal receiving subunit includes an infrared receiving head, a first capacitor, a first resistor, and a second resistor, one end of the first capacitor is connected to a power end of the infrared receiving head and is connected to one end of the first resistor, the other end of the first resistor is connected to the positive electrode of the power supply, the other end of the first capacitor is connected to a ground end of the infrared receiving head and is grounded, a control end of the infrared receiving head is connected to one end of the second resistor, the other end of the second resistor is connected to the single chip, the power end of the single chip is connected to the positive electrode of the power supply, and the ground end of the single chip is grounded.
4. The sleep circuit of claim 3, wherein: the trigger subunit includes triode and third resistance, the collecting electrode of triode with the positive pole of power is connected, the projecting pole of triode with the protection unit is connected and with the one end of third resistance is connected, the other end of third resistance with the negative pole of power is connected, the base of triode with the dormancy control end of singlechip is connected.
5. The sleep circuit according to any of claims 1 to 4, wherein the protection unit comprises:
the acquisition subunit is connected with the positive electrode of the power supply and is used for acquiring the power supply voltage;
the power protection chip is used for controlling the power supply voltage to be lower than the preset over-discharge protection voltage to disconnect the switch unit and to control the switch unit to disconnect when receiving an external control signal.
6. The sleep circuit of claim 5, wherein the protection unit further comprises a filtering subunit connected to the acquisition subunit and to the negative terminal of the power supply.
7. The sleep circuit of claim 6, wherein: the filtering subunit comprises a second capacitor, one end of the second capacitor is connected with the acquisition subunit, and the other end of the second capacitor is connected with the negative electrode of the power supply.
8. The sleep circuit of claim 7, wherein: the switch unit comprises a first switch tube, the output end of the first switch tube is connected with the negative electrode of the power supply, the control end of the first switch tube is connected with the discharge control end of the power supply protection chip, and the input end of the first switch tube is connected with the negative electrode of the load.
9. The sleep circuit of claim 8, wherein: the first switch tube is a first N-channel MOS tube, a source electrode of the first N-channel MOS tube is connected with a negative electrode of the power supply, a grid electrode of the first N-channel MOS tube is connected with a discharge control end of the power supply protection chip, and a drain electrode of the first N-channel MOS tube is connected with a negative electrode of the load.
10. An illumination device, comprising: a power source, a light source, a controller and a sleep circuit as claimed in any one of claims 1 to 8, the sleep circuit being connected between the power source and the light source, the controller being arranged to issue the external control signal to control the sleep circuit to go to sleep.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022207472.8U CN213847095U (en) | 2020-09-30 | 2020-09-30 | Dormancy circuit and lighting device |
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| CN202022207472.8U CN213847095U (en) | 2020-09-30 | 2020-09-30 | Dormancy circuit and lighting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112235923A (en) * | 2020-09-30 | 2021-01-15 | 深圳源创智能照明有限公司 | Sleep circuit, control method thereof and lighting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112235923A (en) * | 2020-09-30 | 2021-01-15 | 深圳源创智能照明有限公司 | Sleep circuit, control method thereof and lighting device |
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