CN107959325A - USB charging systems and its control method - Google Patents
USB charging systems and its control method Download PDFInfo
- Publication number
- CN107959325A CN107959325A CN201711188205.7A CN201711188205A CN107959325A CN 107959325 A CN107959325 A CN 107959325A CN 201711188205 A CN201711188205 A CN 201711188205A CN 107959325 A CN107959325 A CN 107959325A
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- unit
- controlling switch
- central processing
- usb
- usb interface
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- 238000007600 charging Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000005611 electricity Effects 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Classifications
-
- H02J7/0021—
-
- H02J7/0026—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to USB charging techniques field, more particularly to a kind of USB charging systems and its control method, including central processing unit, Switching Power Supply circuit, controlling switch unit, current sense unit and USB charging interfaces, the controlling switch unit and current sense unit are electrically connected with central processing unit, and the feeder ear of the USB interface is connected to the feeder ear of Switching Power Supply circuit by controlling switch unit, the ground terminal of the USB interface is connected to the ground terminal of Switching Power Supply circuit by current sense unit, it is characterised in that：It further includes equipment connection detecting unit, and the equipment connection detecting unit is electrically connected with central processing unit, and equipment connection detecting unit is connected with the feeder ear of USB interface and the feeder ear of Switching Power Supply circuit respectively.This USB charging systems and method are easy to use.
Description
Technical field
The present invention relates to USB charging techniques field, more particularly to a kind of USB charging systems and its control method.
Background technology
USB chargings are present conventional charging facilities, and USB charging equipments mainly charge to digital product.Although
The USB charging equipments of the prior art have charging protection function, but the USB charging equipments of the prior art do not identify charging
Whether the product after protection is extracted, i.e., when plugging the product that another needs charges, it is necessary to which user's hand-reset USB chargings are set
It is standby just to continue to charge to this product, so using not very convenient.
The content of the invention
A technical problem to be solved by this invention is：A kind of USB charging systems easy to use are provided.
A technical solution of the present invention is：A kind of USB charging systems, including central processing unit, Switching Power Supply
Circuit, controlling switch unit, current sense unit and USB charging interfaces, controlling switch unit and current sense unit are equal
It is electrically connected with central processing unit, and the feeder ear of USB interface is connected to the power supply of Switching Power Supply circuit by controlling switch unit
End, the ground terminal of USB interface are connected to the ground terminal of Switching Power Supply circuit by current sense unit, it further includes equipment connection
Detecting unit, equipment connection detecting unit be electrically connected with central processing unit, and equipment connect detecting unit respectively with USB interface
The feeder ear of feeder ear and Switching Power Supply circuit connects.
Using above structure compared with prior art, the present invention has the following advantages：To be detected by the way that there is provided equipment connection
Unit, connects detecting unit by equipment and detects whether the charging equipment after being full of is additionally attached on USB interface, so when filling
After electric equipment extracts USB interface, equipment connection detecting unit can monitor, then control controlling switch unit to reset, so under
It can be charged normal after one charging equipment insertion USB interface, without going to set reset switch, such user's use is compared
It is convenient.
Preferably, USB interface includes main USB interface and multiple secondary USB interfaces, and the power supply of multiple secondary USB interfaces
Two circuits have been arranged in parallel between end and the feeder ear of Switching Power Supply circuit, have been divided into for the first circuit and second circuit, first
Circuit includes the first controlling switch and the current limiting unit being cascaded, and second circuit includes the second controlling switch, and the first control
System switch and the second controlling switch are electrically connected with central processing unit.Current limiting unit is set on multiple secondary USB interfaces, so
It can guarantee that the current strength of main USB interface, judge because being provided with current sense unit on main USB interface on main USB interface
Whether equipment is had in charging, so when main USB interface does not connect charging equipment, then secondary USB interface not current limliting, when main USB connects
Mouth connects charging equipment, then secondary USB interface by current limliting, can ensure the current strength of main USB interface.
Another technical problem to be solved by this invention is：A kind of control method of USB charging systems is provided, using this
Kind method USB charging systems are more convenient to use.
Another technical solution of the present invention is：A kind of control method of USB charging systems, it includes following step
Suddenly：
S1, central processing unit control controlling switch unit conducting, then control current sense cell operation, if the electric current detected
Less than the threshold value of setting, then no charging equipment access is judged, then current sense unit continues to detect；If the electric current detected is big
In the threshold value of setting, then judge there is charging equipment access, redirect lower next step；
S2, current sense unit continue to detect, if the electric current detected is more than the threshold value of setting, judge that charging equipment is also filling
Electricity, then current sense unit continue to detect；If the electric current detected is less than the threshold value of setting, judge that charging equipment has filled
Full, then central processing unit controls switch unit, and then branches in next step；
S3, equipment connection detecting unit work, if the voltage detected is less than the threshold value of setting, judge the charging equipment being full of
Still it is inserted on USB interface, then control device connection detecting unit continues to detect；If the voltage detected is more than the threshold of setting
Value, the then charging equipment for judging to be full of have been extracted, then the conducting of central processing unit control controlling switch unit.
It is further comprising the steps of in step S1：
S11, first control are connected to the current sense cell operation on main USB interface；
If S12, the electric current detected are less than the threshold value of setting, no charging equipment access is judged, then central processing unit controls
First controlling switch disconnects, and controls the second controlling switch to turn at the same time；If the electric current detected is more than the threshold value of setting, sentence
Disconnected to have charging equipment access, then central processing unit controls the conducting of the first controlling switch, and controls the second controlling switch to disconnect at the same time.
Using above method compared with prior art, the present invention has the following advantages：Judged by current sense unit
Charging equipment whether is connect, then judges whether charging equipment is full of by current sense unit again, is carried out after being then filled with
Charge protection, connects whether detecting unit has been extracted come the equipment for judging to be full of by equipment again afterwards, if having extracted certainly
Dynamic to reset, so there is no need to the USB interface of user's hand-reset charge protection, such user uses comparison side
Just.
And judge whether main USB interface has equipment charging according to the current sense unit on main USB interface, if
Current limiting time USB interface, the not current limliting time USB interface if not, so can guarantee that the electric current of main USB interface so that be plugged on
Product on main USB interface can preferably charge.
Brief description of the drawings
Fig. 1 is the connection block diagram of the single USB interface of USB charging systems of the present invention.
Fig. 2 is the connection block diagram that multiple USB interfaces of USB charging systems of the present invention combine.
Embodiment
The present invention is described further with embodiment below in conjunction with attached drawing, but the present invention be not limited only to it is following
Embodiment.
A kind of USB charging systems, including central processing unit, Switching Power Supply circuit, controlling switch unit, current sense unit
And USB charging interfaces, controlling switch unit and current sense unit are electrically connected with central processing unit, and USB interface
Feeder ear is connected to the feeder ear of Switching Power Supply circuit by controlling switch unit, and the ground terminal of USB interface passes through current sense
Unit is connected to the ground terminal of Switching Power Supply circuit, it further includes equipment connection detecting unit, and equipment connection detecting unit is with
Central processor is electrically connected, and the equipment connection detecting unit power supply with the feeder ear and Switching Power Supply circuit of USB interface respectively
End connection.
Wherein Switching Power Supply circuit is AC-DC or DC-DC switch power modules.Controlling switch unit is using model
For the metal-oxide-semiconductor of AO3416, such central processing unit can easily control the break-make of metal-oxide-semiconductor.One big electricity is parallel with metal-oxide-semiconductor
Resistance, resistance value 100K, equipment connection detecting unit is mainly the voltage detected between this big resistance and USB interface feeder ear,
Because controlling switch unit or when USB interface does not connect charging equipment, the voltage here measured is all 5V, if USB
Interface connects charging equipment, then the voltage here measured is 4.7V or so, both are distinguishing.The ground terminal of USB interface with
A small resistor, resistance value 0.1K are additionally provided between ground, current sense unit mainly monitors this small resistor and connect with USB interface
Electric current between ground terminal.
USB interface includes main USB interface and multiple secondary USB interfaces, and the feeder ear of multiple secondary USB interfaces and switch electricity
Two circuits are arranged in parallel between the feeder ear of source circuit, be divided into includes string for the first circuit and second circuit, the first circuit
The first controlling switch and current limiting unit being linked togather, second circuit include the second controlling switch, and the first controlling switch and
Second controlling switch is electrically connected with central processing unit.Current limiting unit is using CW3047 current limlitings chip and its accessory circuit group
Into, and two controlling switches use the metal-oxide-semiconductor of model AO3416.
A kind of control method of USB charging systems, it is characterised in that it comprises the following steps：
S1, central processing unit control controlling switch unit conducting, then control current sense cell operation, if the electric current detected
Less than the threshold value of setting, then no charging equipment access is judged, then current sense unit continues to detect；If the electric current detected is big
In the threshold value of setting, then judge there is charging equipment access, redirect lower next step；
S2, current sense unit continue to detect, if the electric current detected is more than the threshold value of setting, judge that charging equipment is also filling
Electricity, then current sense unit continue to detect；If the electric current detected is less than the threshold value of setting, judge that charging equipment has filled
Full, then central processing unit controls switch unit, and then branches in next step；
S3, equipment connection detecting unit work, if the voltage detected is less than the threshold value of setting, judge the charging equipment being full of
Still it is inserted on USB interface, then control device connection detecting unit continues to detect；If the voltage detected is more than the threshold of setting
Value, the then charging equipment for judging to be full of have been extracted, then the conducting of central processing unit control controlling switch unit.
It is further comprising the steps of in the step S1：
S11, first control are connected to the current sense cell operation on main USB interface；Because the ground terminal of each USB interface is equal
There is provided current sense unit, so being also to have current sense unit on main USB interface.
If S12, the electric current detected are less than the threshold value of setting, no charging equipment access is judged, then central processing unit
Control the first controlling switch to disconnect, and control the second controlling switch to turn at the same time；If the electric current detected is more than the threshold value of setting,
Then judge there is charging equipment access, then central processing unit controls the conducting of the first controlling switch, and controls the second controlling switch at the same time
Disconnect.The application generally ensures in 2.4A to the electric current of main USB interface.
Claims (4)
1. a kind of USB charging systems, including central processing unit, Switching Power Supply circuit, controlling switch unit, current sense unit with
And USB charging interfaces, the controlling switch unit and current sense unit are electrically connected with central processing unit, and the USB
The feeder ear of interface is connected to the feeder ear of Switching Power Supply circuit by controlling switch unit, and the ground terminal of the USB interface leads to
Overcurrent detecting unit is connected to the ground terminal of Switching Power Supply circuit, it is characterised in that：It further includes equipment connection detecting unit,
Equipment connection detecting unit is electrically connected with central processing unit, and the equipment connect detecting unit respectively with USB interface
The feeder ear of feeder ear and Switching Power Supply circuit connects.
2. USB charging systems according to claim 1, it is characterised in that：The USB interface include main USB interface and
Multiple secondary USB interfaces, and be arranged in parallel between the feeder ear of the multiple secondary USB interface and the feeder ear of Switching Power Supply circuit
Two circuits, are divided into for the first circuit and second circuit, first circuit include the first controlling switch for being cascaded with
Current limiting unit, the second circuit include the second controlling switch, and first controlling switch and the second controlling switch with
Central processing unit is electrically connected.
3. a kind of control method of USB charging systems, it is characterised in that it comprises the following steps：
S1, central processing unit control controlling switch unit conducting, then control current sense cell operation, if the electric current detected
Less than the threshold value of setting, then no charging equipment access is judged, then current sense unit continues to detect；If the electric current detected is big
In the threshold value of setting, then judge there is charging equipment access, redirect lower next step；
S2, current sense unit continue to detect, if the electric current detected is more than the threshold value of setting, judge that charging equipment is also filling
Electricity, then current sense unit continue to detect；If the electric current detected is less than the threshold value of setting, judge that charging equipment has filled
Full, then central processing unit controls switch unit, and then branches in next step；
S3, equipment connection detecting unit work, if the voltage detected is less than the threshold value of setting, judge the charging equipment being full of
Still it is inserted on USB interface, then control device connection detecting unit continues to detect；If the voltage detected is more than the threshold of setting
Value, the then charging equipment for judging to be full of have been extracted, then the conducting of central processing unit control controlling switch unit.
A kind of 4. control method of USB charging systems according to claim 3, it is characterised in that：In the step S1 also
Comprise the following steps：
S11, first control are connected to the current sense cell operation on main USB interface；
If S12, the electric current detected are less than the threshold value of setting, no charging equipment access is judged, then central processing unit controls
First controlling switch disconnects, and controls the second controlling switch to turn at the same time；If the electric current detected is more than the threshold value of setting, sentence
Disconnected to have charging equipment access, then central processing unit controls the conducting of the first controlling switch, and controls the second controlling switch to disconnect at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711188205.7A CN107959325B (en) | 2017-11-24 | 2017-11-24 | USB charging system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711188205.7A CN107959325B (en) | 2017-11-24 | 2017-11-24 | USB charging system and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107959325A true CN107959325A (en) | 2018-04-24 |
| CN107959325B CN107959325B (en) | 2021-05-18 |
Family
ID=61961968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711188205.7A Active CN107959325B (en) | 2017-11-24 | 2017-11-24 | USB charging system and control method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN107959325B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539830A (en) * | 2018-06-20 | 2018-09-14 | 深圳英集芯科技有限公司 | A kind of charging control switching circuit and control method |
| CN110413547A (en) * | 2018-04-28 | 2019-11-05 | 鸿富锦精密电子（重庆）有限公司 | The communication system of interface control unit and the application interface control unit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110241627A1 (en) * | 2010-04-06 | 2011-10-06 | On Semiconductor Trading, Ltd. | Battery charger for portable electronic equipment |
| CN203326663U (en) * | 2013-06-28 | 2013-12-04 | 向智勇 | Electronic cigarette case |
| CN103954861A (en) * | 2014-04-23 | 2014-07-30 | 四川虹微技术有限公司 | Double-way USB load insertion detecting device |
| CN204030700U (en) * | 2014-08-14 | 2014-12-17 | 钱剑科 | Auto-breaking charger |
| CN104535851A (en) * | 2014-12-12 | 2015-04-22 | 惠州Tcl移动通信有限公司 | Rapid detecting method and system for judging pullout state of mobile terminal charger |
| CN105576744A (en) * | 2015-12-25 | 2016-05-11 | 惠州Tcl移动通信有限公司 | Charge pal switching implementation method and charge pal |
| CN106602645A (en) * | 2016-12-13 | 2017-04-26 | 上海创功通讯技术有限公司 | Charger |
-
2017
- 2017-11-24 CN CN201711188205.7A patent/CN107959325B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110241627A1 (en) * | 2010-04-06 | 2011-10-06 | On Semiconductor Trading, Ltd. | Battery charger for portable electronic equipment |
| CN203326663U (en) * | 2013-06-28 | 2013-12-04 | 向智勇 | Electronic cigarette case |
| CN103954861A (en) * | 2014-04-23 | 2014-07-30 | 四川虹微技术有限公司 | Double-way USB load insertion detecting device |
| CN204030700U (en) * | 2014-08-14 | 2014-12-17 | 钱剑科 | Auto-breaking charger |
| CN104535851A (en) * | 2014-12-12 | 2015-04-22 | 惠州Tcl移动通信有限公司 | Rapid detecting method and system for judging pullout state of mobile terminal charger |
| CN105576744A (en) * | 2015-12-25 | 2016-05-11 | 惠州Tcl移动通信有限公司 | Charge pal switching implementation method and charge pal |
| CN106602645A (en) * | 2016-12-13 | 2017-04-26 | 上海创功通讯技术有限公司 | Charger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110413547A (en) * | 2018-04-28 | 2019-11-05 | 鸿富锦精密电子（重庆）有限公司 | The communication system of interface control unit and the application interface control unit |
| CN108539830A (en) * | 2018-06-20 | 2018-09-14 | 深圳英集芯科技有限公司 | A kind of charging control switching circuit and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107959325B (en) | 2021-05-18 |
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Address after: No.77, Wuxiang East Road, Yinzhou District, Ningbo City, Zhejiang Province, 315105 Patentee after: EVERFLOURISH SMART TECHNOLOGY Corp.,Ltd. Address before: 315105 Zhejiang province Ningbo five Yinzhou District Township Ren Village Patentee before: ZHEJIANG EVERFLOURISH ELECTRICAL Co.,Ltd. |
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