CN206041552U - A protection device for preventing external battery joins conversely - Google Patents
A protection device for preventing external battery joins conversely Download PDFInfo
- Publication number
- CN206041552U CN206041552U CN201620927444.4U CN201620927444U CN206041552U CN 206041552 U CN206041552 U CN 206041552U CN 201620927444 U CN201620927444 U CN 201620927444U CN 206041552 U CN206041552 U CN 206041552U
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a rechargeable battery detects technical field, in particular to a protection device for preventing external battery joins conversely. The utility model discloses a protected location is provided with the protection circuit in, the protection circuit includes resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, electric capacity C1, MOS pipe, triode Q1 and terminal J1, the utility model discloses in, the protection circuit can need not to dispose two sets of circuit, switches on and manages absolutely through what control MOS managed, just can realize that it has the electric current to flow through to prevent to join conversely the battery to play the guard action, the utility model discloses gather earlier port voltage, become effective drive after enlargeing to switching on and managing of control MOS pipe is disconnected, realizes turn -offing when the battery joins conversely the return circuit, the utility model discloses simple structure, convenient operation has increased the stable ability of circuit.
Description
Technical field
The utility model is related to rechargeable battery detection technique field, more particularly to a kind of for preventing external connection battery reversal connection
Protection device.
Background technology
Switching Power Supply is to utilize modern power electronics technology, the time ratio that controlling switch pipe is turned on and off, and remains steady
Determine a kind of power supply of output voltage, Switching Power Supply is typically by pulse width modulation（PWM）Control IC and MOSFET is constituted.With electricity
The development and innovation of power electronic technology so that switch power technology is also innovated constantly.At present, Switching Power Supply is with small-sized, light
Amount and efficient feature are widely used almost all of electronic equipment, and it is indispensable to be that current electronics and information industry is developed rapidly
A kind of few power mode.
Switching Power Supply product is widely used in industrial automatic control, military industry equipment, research equipment, LED illumination, industry control and sets
Standby, communication apparatus, power equipment, instrument and meter, Medical Devices, semiconductor refrigerating are heated, air purifier, electronic refrigerator, liquid
Crystal display, LED lamp, communication apparatus, audio-visual products, safety monitoring, LED bag, computer housing, digital product and instrument class
In field.
All there is body diode using the power device metal-oxide-semiconductor of the switching type power supply in battery at present, body diode
If exist causing battery reversal connection, electric current flow through on body diode, metal-oxide-semiconductor, or even electricity is easily burnt out at short notice
Pond electricity is depleted until battery permanent damages；It is and being used mostly now diode prevents battery reversal connection, anti-reverse based on diode
Circuit structure it is simple, but need to configure two sets of circuits in discharge and recharge, and certain power can be consumed, cause efficiency low.
The content of the invention
Described above in order to overcome the shortcomings of, the purpose of this utility model is to provide a kind of for preventing external connection battery reversal connection
Protection device, its discharge and recharge need not configure two sets of circuits, it is possible to which realization prevents reversal connection battery from having electric current to flow through, and can compare
Play a protective role well, increase the stability of circuit, battery is only put.
The technical scheme in the invention for solving the technical problem is：
A kind of protection device for preventing external connection battery reversal connection, which is arranged on the charge and discharge electric detection means of rechargeable battery
On, wherein, including protection location, in the protection location, it is provided with the protection circuit for protecting metal-oxide-semiconductor；The protection circuit
Including resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, electric capacity C1, metal-oxide-semiconductor, three poles
Pipe Q1 and terminal J1；The D ends of metal-oxide-semiconductor one end respectively with resistance R2, one end of resistance R8 are connected, the other end and the electricity of resistance R2
Hold one end connection of C1, the S ends of the metal-oxide-semiconductor other end respectively with electric capacity C1, one end of resistance R3, one end of resistance R4, resistance
One end of R1, the emitter stage connection of triode Q1, the other end of the resistance R4 other end respectively with resistance R3, one end of resistance R5
Connection, the other end of resistance R5 is connected with the pin 1 of terminal J1, the pin 2 of the terminal J1 other end respectively with resistance R8, resistance
One end connection of R6, resistance R6 is connected with the base stage of triode Q1, the G ends of the metal-oxide-semiconductor other end respectively with resistance R1, triode
One end connection of the colelctor electrode of Q1, resistance R7, the other end of resistance R7 are connected with power supply.
Used as a kind of improvement of the present utility model, the voltage of the power supply is 10V.
In the utility model, protection circuit can configure two sets of circuits, by controlling conducting and the pipe of metal-oxide-semiconductor
It is disconnected, it is possible to which that realization prevents reversal connection battery from having electric current to flow through, so as to play a protective role；The utility model first gathers port electricity
Pressure, becomes effectively driving after amplification, disconnected with pipe so as to control the conducting of metal-oxide-semiconductor, realizes the turn-off circuit in battery reversal connection,
The utility model simple structure, it is easy to operate, increased the stability of circuit.
Description of the drawings
For ease of explanation, the utility model is described in detail by following preferred embodiments and accompanying drawing.
Fig. 1 is internal circuit connection diagram of the present utility model.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.
As shown in figure 1, a kind of protection device for preventing external connection battery reversal connection of the present utility model, which is arranged on charging
On the charge and discharge electric detection means of battery.
A kind of protection device for preventing external connection battery reversal connection of the present utility model includes protection location, in protection location
It is provided with the protection circuit for protecting metal-oxide-semiconductor.
Protection circuit include resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8,
Electric capacity C1, metal-oxide-semiconductor, triode Q1 and terminal J1；The D ends of metal-oxide-semiconductor one end respectively with resistance R2, one end of resistance R8 are connected,
The other end of resistance R2 is connected with one end of electric capacity C1, the S ends of the metal-oxide-semiconductor other end respectively with electric capacity C1, one end of resistance R3,
One end of resistance R4, one end of resistance R1, the emitter stage connection of triode Q1, the other end of resistance R4 are another with resistance R3 respectively
One end, one end connection of resistance R5, the other end of resistance R5 is connected with the pin 1 of terminal J1, the pin 2 of terminal J1 respectively with electricity
One end connection of the resistance other end of R8, resistance R6, resistance R6 are connected with the base stage of triode Q1, the G ends of metal-oxide-semiconductor respectively with resistance
The other end of R1, the colelctor electrode of triode Q1, one end connection of resistance R7, the other end of resistance R7 are connected with power supply.
In the utility model, port voltage is first gathered, become effectively driving after amplification, so as to control metal-oxide-semiconductor
Conducting is disconnected with pipe, realizes the turn-off circuit in battery reversal connection.
Further, the voltage of power supply is 10V.
Metal-oxide-semiconductor is to control its open and close by the pressure reduction between GS；When battery normally connects, that is, terminal J1
Voltage of 1 pin of pin more than its 2 pin of pin, now triode Q1 closings, metal-oxide-semiconductor G pole tensions are approximately equal to+10V, and GS voltages are about
（10- cell voltages>6V）, metal-oxide-semiconductor conducting, circuit are in normal operating conditions；When battery reversal connection, its 2 pin voltage of pin is high
In its 1 pin voltage of pin, triode Q1 conductings, GS voltages are about 0, and metal-oxide-semiconductor cut-off has electric current stream so as to prevent reversal connection battery
Cross.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit the utility model, all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (2)
1. a kind of protection device for preventing external connection battery reversal connection, which is arranged on the charge and discharge electric detection means of rechargeable battery,
Characterized in that, including protection location, being provided with the protection circuit for protecting metal-oxide-semiconductor in the protection location；The protection
Circuit include resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, electric capacity C1, metal-oxide-semiconductor,
Triode Q1 and terminal J1；The D ends of metal-oxide-semiconductor one end respectively with resistance R2, one end of resistance R8 are connected, the other end of resistance R2
Be connected with one end of electric capacity C1, the S ends of the metal-oxide-semiconductor other end respectively with electric capacity C1, one end of resistance R3, one end of resistance R4,
One end of resistance R1, the emitter stage connection of triode Q1, the other end of the resistance R4 other end respectively with resistance R3, resistance R5
One end connects, and the other end of resistance R5 is connected with the pin 1 of terminal J1, the pin 2 of the terminal J1 other end respectively with resistance R8,
One end connection of resistance R6, resistance R6 is connected with the base stage of triode Q1, the G ends of the metal-oxide-semiconductor other end respectively with resistance R1, three
One end connection of the colelctor electrode of pole pipe Q1, resistance R7, the other end of resistance R7 are connected with power supply.
2. a kind of protection device for preventing external connection battery reversal connection according to claim 1, it is characterised in that the electricity
The voltage in source is 10V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620927444.4U CN206041552U (en) | 2016-08-24 | 2016-08-24 | A protection device for preventing external battery joins conversely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620927444.4U CN206041552U (en) | 2016-08-24 | 2016-08-24 | A protection device for preventing external battery joins conversely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206041552U true CN206041552U (en) | 2017-03-22 |
Family
ID=58303035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620927444.4U Expired - Fee Related CN206041552U (en) | 2016-08-24 | 2016-08-24 | A protection device for preventing external battery joins conversely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206041552U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017613A (en) * | 2017-06-07 | 2017-08-04 | 上海乐野网络科技有限公司 | It is a kind of to prevent the circuit of reverse power connection |
| WO2022141027A1 (en) * | 2020-12-29 | 2022-07-07 | 深圳欣锐科技股份有限公司 | Vehicle-mounted drive anti-reverse connection apparatus and device |
-
2016
- 2016-08-24 CN CN201620927444.4U patent/CN206041552U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017613A (en) * | 2017-06-07 | 2017-08-04 | 上海乐野网络科技有限公司 | It is a kind of to prevent the circuit of reverse power connection |
| WO2022141027A1 (en) * | 2020-12-29 | 2022-07-07 | 深圳欣锐科技股份有限公司 | Vehicle-mounted drive anti-reverse connection apparatus and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20200824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |