CN106300563A - USB power supply protection circuit and use the vehicle intelligent charging device of this circuit - Google Patents
USB power supply protection circuit and use the vehicle intelligent charging device of this circuit Download PDFInfo
- Publication number
- CN106300563A CN106300563A CN201610924569.6A CN201610924569A CN106300563A CN 106300563 A CN106300563 A CN 106300563A CN 201610924569 A CN201610924569 A CN 201610924569A CN 106300563 A CN106300563 A CN 106300563A
- Authority
- CN
- China
- Prior art keywords
- audion
- voltage
- power supply
- protection circuit
- supply protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
-
- 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
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to a kind of USB power supply protection circuit and use the vehicle intelligent charging device of this circuit.This circuit includes Control of Voltage interruptive port, the first voltage input end mouth and voltage acquisition port, described first voltage input end mouth connects parallel resistance, the outfan of parallel resistance connects the C colelctor electrode of the first audion, the B base stage of the first audion connects Control of Voltage interruptive port, the E emitter stage of the first audion connects the B base stage of the first adjustable resistor and the second audion respectively, the C colelctor electrode of the second audion is connected with voltage acquisition port, and the outfan of described first adjustable resistor and the E emitter stage of the second audion all connect ground wire.Due to the existence of USB power supply protection circuit, explode in the exception of charging process owing to the existence of this circuit can be effectively prevented from external charger, prevent the life to user and property from causing damage.
Description
Technical field
The present invention relates to technical field of automotive electronics, particularly to a kind of USB power supply protection circuit and use this circuit
Vehicle intelligent charging device.
Background technology
Existing Chinese patent database discloses a kind of vehicle-mounted USB charger, including charger case and be placed in
The circuit control panel of enclosure, described circuit board is installed with USB interface and corresponding with vehicle power jack
Vehicle-mounted plug, the circuit control panel of described charger internal is additionally provided with the attaching plug can being connected with external power source.It is not enough
Part is: mobile phone charging process does not carry out intelligent management due to this charger, and during mobile phone charging, battery can be hot, simultaneously
Some user makes a phone call the when of charging, plays game etc., easily makes the overheated and short-circuit blast of mobile phone, the life wealth to cellphone subscriber
Produce and constitute great potential safety hazard.
Summary of the invention
It is an object of the invention to the deficiency existed for prior art, it is provided that during a kind of prevention mobile phone charging battery cross scald and
The USB power supply protection circuit of blast.
In order to realize the purpose of foregoing invention, the technical scheme that the present invention i.e. USB power supply protection circuit is taked:
USB power supply protection circuit, includes Control of Voltage interruptive port, the first voltage input end mouth and voltage acquisition end
Mouthful, described first voltage input end mouth connects parallel resistance, and the outfan of parallel resistance connects the C current collection of the first audion
Pole, the B base stage of the first audion connects Control of Voltage interruptive port, and it is adjustable that the E emitter stage of the first audion connects first respectively
Economize on electricity resistance and the B base stage of the second audion, the C colelctor electrode of the second audion is connected with voltage acquisition port, and described first can
The outfan of regulation resistance and the E emitter stage of the second audion all connect ground wire, the first voltage input end mouth and 12V power supply
It is connected, is high level when Control of Voltage interruptive port normally works, export 5V voltage, regulate the resistance of the first adjustable resistor
Value, limits the size of current passed through, when exceeding limit value, and the first adjustable resistor two ends by the electric current of the first adjustable resistor
Voltage more than 0.7V time, the second triode ON, then voltage acquisition port receives low level signal, it is judged that for cross stream, voltage
Control interruptive port and cut off USB power supply.
Compared with prior art, the invention have the benefit that owing to the existence of this circuit can be effectively prevented from external
Charger explodes in the exception of charging process, prevents the life to user and property from causing damage.
Further, between described Control of Voltage interruptive port and the B base stage of the first audion, connection has the second scalable
Resistance.
Further, between described voltage acquisition port and the C colelctor electrode of the second audion, connection has the 3rd adjustable economize on electricity
Resistance.
Further, the C colelctor electrode of described second audion connects through the 4th adjustable resistor the second voltage input end
Mouthful, the second voltage input end mouth is connected with 5V power supply.
Present invention also offers a kind of vehicle intelligent charging device using described USB power supply protection circuit, taked
Technical scheme:
Use the vehicle intelligent charging device of described USB power supply protection circuit, include the SOC for mobile phone Charge Management
Microprocessor, SOC microprocessor connects the display screen having USB interface and peripheral hardware, and described SOC microprocessor is also associated with USB and supplies
The Control of Voltage interruptive port of electric protection circuit and voltage acquisition port, described USB interface and the first of USB power supply protection circuit
Voltage input end mouth is connected.
When the present invention works, first with USB interface, mobile phone being connected charging, SOC microprocessor is sent out to mobile phone through USB interface
Sending the AT order reading battery information, mobile phone receives AT order feedback battery information (battery status, battery electric quantity, electricity water
Flat, cell health state, cell voltage and battery temperature etc.), show battery of mobile phone information, SOC microprocessor root at display screen
Dynamically monitoring charging mobile phone battery according to battery information, USB power supply protection circuit is to the voltage of this charging device, electricity simultaneously
Stream is monitored, and when the stream that charged, overvoltage or battery temperature are too high, SOC microprocessor cuts off power supply.With prior art
Compare, the invention have the benefit that due to the existence of USB power supply protection circuit, charging mobile phone battery mistake can be effectively monitored
Journey, cuts off power supply, simultaneously again due to the existence of display screen, can check that mobile phone charged intuitively when battery of mobile phone is crossed boiling hot
Battery information in journey, can be artificial cut off the electricity supply in time, improve safety.
Further, described SOC microprocessor is also associated with speaker.
Accompanying drawing explanation
Fig. 1 is the structural representation of vehicle intelligent charging device of the present invention.
Fig. 2 is the structural representation of USB power supply protection circuit in Fig. 1.
Wherein, 1 SOC microprocessor, 2 USB power supply protection circuits, 201 Control of Voltage interruptive ports, 202 first voltages
Input port, 203 parallel resistances, 204 first audions, 205 first adjustable resistors, 206 second audions, 207 voltages are adopted
Collection port, 208 ground wires, 209 second adjustable resistors, 210 the 3rd adjustable resistors, 211 the 4th adjustable resistors, 212 second
Voltage input end mouth, 3 USB interface, 4 speakers, 5 display screens.
Detailed description of the invention
As in figure 2 it is shown, be USB power supply protection circuit, include Control of Voltage interruptive port the 201, first voltage input end
Mouth 202 and voltage acquisition port 207, the first voltage input end mouth 202 connects parallel resistance 203, the output of parallel resistance 203
End connects the C colelctor electrode of the first audion 204, and the B base stage of the first audion 204 connects the second adjustable resistor 209, and second can
Regulation resistance 209 connects Control of Voltage interruptive port 201, and the E emitter stage of the first audion 204 connects the first adjustable economize on electricity respectively
Resistance 205 and the B base stage of the second audion 206, the first adjustable resistor 205 connects ground wire 208, the C colelctor electrode of the second audion
Connect the 3rd adjustable resistor 210 and the 4th adjustable resistor 211, the 3rd adjustable resistor 210 and voltage acquisition port respectively
207 are connected, and the 4th adjustable resistor 211 is connected with the second voltage input end mouth 212, and the E emitter stage of the second audion is even
Earth lead 208, the first voltage input end mouth 202 is connected with power supply, when Control of Voltage interruptive port 201 normally works is
High level, exports 5V voltage, regulates the resistance of the first adjustable resistor 205, limits the size of current passed through, when can by first
The electric current of regulation resistance 205 exceedes limit value, and the voltage at the first adjustable resistor 205 two ends more than 0.7V time, the second audion
206 conductings, then voltage acquisition port 207 receives low level signal, it is judged that for crossing stream, Control of Voltage interruptive port 201 cuts off USB
Power supply.
As described in Fig. 1～2, corresponding with above-mentioned USB power supply protection circuit, the present invention also provides for using described USB to power
The vehicle intelligent charging device of protection circuit, includes the SOC microprocessor 1 for mobile phone Charge Management, SOC microprocessor 1
Connecting the display screen 5 having USB interface 3 and peripheral hardware, SOC microprocessor 1 is also associated with the Control of Voltage of USB power supply protection circuit 2
Interruptive port 201 and voltage acquisition port 207, USB interface 3 and the first voltage input end mouth 202 of USB power supply protection circuit 2
Being connected, further, SOC microprocessor 1 is also associated with speaker 4.
During work, first mobile phone and USB interface 3 being connected charging, SOC microprocessor 1 sends to mobile phone through USB interface 3
Read battery information AT order, mobile phone receive AT order feed back battery information (battery status, battery electric quantity, charge level,
Cell health state, cell voltage and battery temperature etc.), show battery of mobile phone information, SOC microprocessor 1 basis at display screen 5
Charging mobile phone battery is dynamically monitored by battery information, and USB power supply protection circuit 2 is to the voltage of this charging device, electricity simultaneously
Stream is monitored, and when the stream that charged, overvoltage or battery temperature are too high, SOC microprocessor 1 cuts off power supply.
The invention is not limited in above-described embodiment, on the basis of technical scheme disclosed by the invention, the skill of this area
Art personnel are according to disclosed technology contents, it is not necessary to some of which technical characteristic just can be made one by performing creative labour
A little replacements and deformation, these are replaced and deformation is the most within the scope of the present invention.
Claims (6)
1.USB power supply protection circuit, it is characterised in that: include Control of Voltage interruptive port, the first voltage input end mouth and electricity
Pressure gathers port, and described first voltage input end mouth connects parallel resistance, and the outfan of parallel resistance connects the first audion
C colelctor electrode, the B base stage of the first audion connects Control of Voltage interruptive port, and the E emitter stage of the first audion connects the respectively
The B base stage of one adjustable resistor and the second audion, the C colelctor electrode of the second audion is connected with voltage acquisition port, described
The outfan of the first adjustable resistor and the E emitter stage of the second audion all connect ground wire.
USB power supply protection circuit the most according to claim 1, it is characterised in that: described Control of Voltage interruptive port and
Connect between the B base stage of one audion and have the second adjustable resistor.
USB power supply protection circuit the most according to claim 1, it is characterised in that: described voltage acquisition port and the two or three
Connect between the C colelctor electrode of pole pipe and have the 3rd adjustable resistor.
USB power supply protection circuit the most according to claim 1, it is characterised in that: the C colelctor electrode warp of described second audion
4th adjustable resistor connects the second voltage input end mouth.
5. use the vehicle intelligent charging device of USB power supply protection circuit as claimed in claim 1, it is characterised in that: include
For the SOC microprocessor of mobile phone Charge Management, SOC microprocessor connects the display screen having USB interface and peripheral hardware, described SOC
Microprocessor is also associated with Control of Voltage interruptive port and the voltage acquisition port of USB power supply protection circuit, described USB interface with
First voltage input end mouth of USB power supply protection circuit is connected.
Vehicle intelligent charging device the most according to claim 5, it is characterised in that: described SOC microprocessor is also associated with
Speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610924569.6A CN106300563A (en) | 2016-10-24 | 2016-10-24 | USB power supply protection circuit and use the vehicle intelligent charging device of this circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610924569.6A CN106300563A (en) | 2016-10-24 | 2016-10-24 | USB power supply protection circuit and use the vehicle intelligent charging device of this circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106300563A true CN106300563A (en) | 2017-01-04 |
Family
ID=57719487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610924569.6A Pending CN106300563A (en) | 2016-10-24 | 2016-10-24 | USB power supply protection circuit and use the vehicle intelligent charging device of this circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106300563A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113688568A (en) * | 2021-08-20 | 2021-11-23 | 上海幻电信息科技有限公司 | Battery optimization method and cloud platform |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208822A (en) * | 2012-01-12 | 2013-07-17 | 鸿富锦精密工业（深圳）有限公司 | Universal serial bus (USB) charging control circuit |
| CN104348214A (en) * | 2013-08-09 | 2015-02-11 | 惠州市吉瑞科技有限公司 | Charger with overvoltage and overcurrent protection and protection method thereof |
| CN104410137A (en) * | 2014-12-26 | 2015-03-11 | 青岛歌尔声学科技有限公司 | Charging protection circuit and electronic product |
| CN104467104A (en) * | 2014-12-18 | 2015-03-25 | 江苏天安智联科技股份有限公司 | Vehicle-mounted USB intelligent charging device |
-
2016
- 2016-10-24 CN CN201610924569.6A patent/CN106300563A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208822A (en) * | 2012-01-12 | 2013-07-17 | 鸿富锦精密工业（深圳）有限公司 | Universal serial bus (USB) charging control circuit |
| CN104348214A (en) * | 2013-08-09 | 2015-02-11 | 惠州市吉瑞科技有限公司 | Charger with overvoltage and overcurrent protection and protection method thereof |
| CN104467104A (en) * | 2014-12-18 | 2015-03-25 | 江苏天安智联科技股份有限公司 | Vehicle-mounted USB intelligent charging device |
| CN104410137A (en) * | 2014-12-26 | 2015-03-11 | 青岛歌尔声学科技有限公司 | Charging protection circuit and electronic product |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113688568A (en) * | 2021-08-20 | 2021-11-23 | 上海幻电信息科技有限公司 | Battery optimization method and cloud platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |