CN104393574B - A kind of lithium battery protection board electric leakage flow control circuit - Google Patents
A kind of lithium battery protection board electric leakage flow control circuit Download PDFInfo
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- CN104393574B CN104393574B CN201410585012.5A CN201410585012A CN104393574B CN 104393574 B CN104393574 B CN 104393574B CN 201410585012 A CN201410585012 A CN 201410585012A CN 104393574 B CN104393574 B CN 104393574B
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Abstract
The invention discloses a kind of lithium battery protection board electric leakage flow control circuits; including lithium battery state detection module and protection control and self-locking module; lithium battery state detection module is in series by battery B1, B2, B3, B4, and one end ground connection, parallel connection outside has lock-in circuit B-, D-；It include triode Q1, Q2, Q3 and metal-oxide-semiconductor Q4 in protection control and self-locking module, the source electrode and drain electrode of metal-oxide-semiconductor Q4 is separately connected lock-in circuit B- and D-, and grid connects supply voltage VCC；The emitter and collector of triode Q3 is separately connected the source electrode and grid of metal-oxide-semiconductor Q4, and base stage is connect with the collector of triode Q1；The emitter of triode Q1 and the collector of base stage connecting triode Q2；The grid of the base stage connection metal-oxide-semiconductor Q4 of triode Q2, emitter ground connection.Using the loop control circuit of control lock-in circuit D-, B-, solves the problems, such as system leakage current, improve safety.
Description
Technical field
The present invention relates to field of lithium more particularly to a kind of lithium battery protection board electric leakage flow control circuits.
Background technique
When lithium battery works, the switch button S1 in protection control and self-locking module can be closed, when under-voltage process detects
When module finds that lithium battery is under-voltage, electric discharge shutdown signal can be executed, at this moment protection control and self-locking module can pass through triode
Q3 closes the metal-oxide-semiconductor Q4 of electric discharge, can not work so as to cause system, after user turns off the switch button S1, triode Q2 is not
Conducting, is not turned on therewith so as to cause Q1.Due to there is no to control the circuit of lock-in circuit D-, B-, whole system is caused to have tens
The leakage current of microampere；And several microamperes of taillight of some electric bicycles can be lighted at present, so system leakage current must be solved
The problem of.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of lithium battery protection board electric leakage flow control circuit, the circuits
Locked loop ON-OFF control circuit can be reached, solves the problems, such as system leakage current.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：A kind of lithium battery protection board
Leak electricity flow control circuit, including lithium battery state detection module and protection control and self-locking module, the lithium battery state-detection
Module is in series by battery B1, B2, B3, B4, and one end ground connection, parallel connection outside has lock-in circuit B-, D-；The protection control
And include triode Q1, Q2, Q3 and metal-oxide-semiconductor Q4 in self-locking module, the source electrode and drain electrode of the metal-oxide-semiconductor Q4 is separately connected locking electricity
Road B- and lock-in circuit D-, grid connect supply voltage VCC；The emitter and collector of the triode Q3 is separately connected MOS
The source electrode and grid of pipe Q4, base stage are connect with the collector of triode Q1；The emitter of the triode Q1 connects three with base stage
The collector of pole pipe Q2；The grid of the base stage connection metal-oxide-semiconductor Q4 of triode Q2, emitter ground connection.
Preferably, it is in series with resistance R1 and switch button S1 between the grid and supply voltage VCC of the metal-oxide-semiconductor Q4,
The collector of the triode Q3 is connected between the grid of metal-oxide-semiconductor Q4 and resistance R1, and the base stage of triode Q2 is connected to resistance
Between R1 and switch button S1, and resistance R2 is in series in the base stage of triode Q2.
Preferably, be parallel with resistance R9 between the base stage and emitter of the triode Q3, collector and emitter it
Between be parallel with resistance R8, resistance R3 is in series between base stage and the collector of triode Q1.
Preferably, resistance R7 is parallel between the base stage and emitter of the triode Q2, collector and triode Q1
Base stage between be in series with resistance R6.
Preferably, being in series with resistance R5 between the emitter and base stage of the triode Q1, emitter is with metal-oxide-semiconductor Q4's
Resistance R4 is parallel between drain electrode.
Preferably, the triode Q1 is PNP type triode, triode Q2, Q3 are NPN type triode, and metal-oxide-semiconductor Q4 is
N-type metal-oxide-semiconductor.
Compared with prior art, the invention has the beneficial effects that：This lithium battery protection board electric leakage flow control circuit is adopted
With the loop control circuit of control lock-in circuit D-, B-, solves the problems, such as system leakage current, improve safety.
Detailed description of the invention
Attached drawing 1 is a kind of lithium battery protection board leakage current electric operation control circuit figure of the present invention.
In figure：1, lithium battery state detection module；2, protection control and self-locking module.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawings and detailed description.
A kind of lithium battery protection board electric leakage flow control circuit shown in Fig. 1, including lithium battery state detection module 1 and protection control
System and self-locking module 2, the lithium battery state detection module 1 are used to detect lithium battery state, control the output of lithium battery group,
In series by battery B1, B2, B3, B4, one end ground connection, parallel connection outside has lock-in circuit B-, D-；The protection controls and oneself
Lock module 2 is for executing the under-voltage control for overcharging detection module, and after closing discharge switch, and if there is load, then locking is put
Electric switch, and according to light current lock status, controls the module leakage current comprising triode Q1, Q2, Q3 and metal-oxide-semiconductor Q4, described three
Pole pipe Q1 is PNP type triode, and triode Q2, Q3 are NPN type triode, and metal-oxide-semiconductor Q4 is N-type metal-oxide-semiconductor；Wherein metal-oxide-semiconductor Q4
Source electrode and drain electrode is separately connected lock-in circuit B- and lock-in circuit D-, and grid connects supply voltage VCC, the grid of the metal-oxide-semiconductor Q4
Resistance R1 and switch button S1 are in series between pole and supply voltage VCC, the collector of the triode Q3 is connected to metal-oxide-semiconductor Q4
Grid and resistance R1 between, the base stage of triode Q2 is connected between resistance R1 and switch button S1, and the base of triode Q2
Resistance R2 is in series on extremely；The emitter and collector of the triode Q3 is separately connected the source electrode and grid of metal-oxide-semiconductor Q4, base stage
Connect with the collector of triode Q1, and be parallel with resistance R9 between the base stage and emitter of the triode Q3, collector with
It is parallel with resistance R8 between emitter, resistance R3 is in series between base stage and the collector of triode Q1；The triode Q1's
The collector of emitter and base stage connecting triode Q2, and resistance is in series between the emitter and base stage of the triode Q1
R5 is parallel with resistance R4 between emitter and the drain electrode of metal-oxide-semiconductor Q4；The grid of the base stage connection metal-oxide-semiconductor Q4 of triode Q2, transmitting
Pole ground connection, and is parallel with resistance R7 between the base stage and emitter of the triode Q2, the base stage of collector and triode Q1 it
Between be in series with resistance R6.
Specifically, the switch button S1 in protection control and self-locking module 2 is closed, when lithium battery shape when lithium battery works
When state detection module 1 finds that lithium battery is under-voltage, electric discharge shutdown signal can be executed, at this moment protection control and self-locking module 2 can pass through
Triode Q3 closes the metal-oxide-semiconductor Q4 of electric discharge, and system can not work, triode Q2 is not led after user turns off the switch button S1
Logical, triode Q1 is not turned on therewith, and at this moment the circuit of lock-in circuit D-/B- is cut off, and battery is to loading to D- -->R4-->
Q1-->R3-->The leakage current of R9 just without.
Loop control circuit of this lithium battery protection board electric leakage flow control circuit using control lock-in circuit D-, B-, solution
Determined system leakage current the problem of, improve safety.
It is emphasized that：The above is only presently preferred embodiments of the present invention, not make in any form to the present invention
Limitation, any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention,
All of which are still within the scope of the technical scheme of the invention.
Claims (6)
- The flow control circuit 1. a kind of lithium battery protection board leaks electricity, including lithium battery state detection module（1）With protection control and certainly Lock module（2）, it is characterised in that：The lithium battery state detection module（1）In series, the one end by battery B1, B2, B3, B4 Ground connection, parallel connection outside have lock-in circuit B-, D-；The protection control and self-locking module（2）Upper includes triode Q1, Q2, Q3 With metal-oxide-semiconductor Q4, the source electrode and drain electrode of the metal-oxide-semiconductor Q4 is separately connected lock-in circuit B- and lock-in circuit D-, and grid connects power supply Voltage VCC；The emitter and collector of the triode Q3 is separately connected the source electrode and grid of metal-oxide-semiconductor Q4, base stage and triode The collector of Q1 connects；The emitter of the triode Q1 and the collector of base stage connecting triode Q2；The base stage of triode Q2 Connect the grid of metal-oxide-semiconductor Q4, emitter ground connection.
- The flow control circuit 2. lithium battery protection board according to claim 1 leaks electricity, it is characterised in that：The metal-oxide-semiconductor Q4's Resistance R1 and switch button S1 are in series between grid and supply voltage VCC, the collector of the triode Q3 is connected to metal-oxide-semiconductor Between the grid and resistance R1 of Q4, the base stage of triode Q2 is connected between resistance R1 and switch button S1, and triode Q2 Resistance R2 is in series in base stage.
- The flow control circuit 3. lithium battery protection board according to claim 1 leaks electricity, it is characterised in that：The triode Q3's It is parallel with resistance R9 between base stage and emitter, resistance R8 is parallel between collector and emitter, base stage is with triode Q1's Resistance R3 is in series between collector.
- The flow control circuit 4. lithium battery protection board according to claim 1 leaks electricity, it is characterised in that：The triode Q2's It is parallel with resistance R7 between base stage and emitter, resistance R6 is in series between collector and the base stage of triode Q1.
- The flow control circuit 5. lithium battery protection board according to claim 1 leaks electricity, it is characterised in that：The triode Q1's It is in series with resistance R5 between emitter and base stage, resistance R4 is parallel between emitter and the drain electrode of metal-oxide-semiconductor Q4.
- The flow control circuit 6. lithium battery protection board according to claim 1 leaks electricity, it is characterised in that：The triode Q1 is PNP type triode, triode Q2, Q3 are NPN type triode, and metal-oxide-semiconductor Q4 is N-type metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410585012.5A CN104393574B (en) | 2014-10-28 | 2014-10-28 | A kind of lithium battery protection board electric leakage flow control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410585012.5A CN104393574B (en) | 2014-10-28 | 2014-10-28 | A kind of lithium battery protection board electric leakage flow control circuit |
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| Publication Number | Publication Date |
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| CN104393574A CN104393574A (en) | 2015-03-04 |
| CN104393574B true CN104393574B (en) | 2018-11-27 |
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| CN201410585012.5A Active CN104393574B (en) | 2014-10-28 | 2014-10-28 | A kind of lithium battery protection board electric leakage flow control circuit |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108418184A (en) * | 2018-04-16 | 2018-08-17 | 天津爱玛车业科技有限公司 | discharge detection circuit and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1967959A (en) * | 2006-09-01 | 2007-05-23 | 中国科技开发院芜湖分院 | Charge and discharge protecting module of lithium dynamical battery |
| CN201341019Y (en) * | 2008-12-03 | 2009-11-04 | 何岳明 | Charge and discharge protection circuit of multi-cell lithium battery |
| CN101814726A (en) * | 2010-04-14 | 2010-08-25 | 罗康林 | Battery discharge prevention circuit |
| CN204156509U (en) * | 2014-10-28 | 2015-02-11 | 芜湖天元汽车电子有限公司 | Lithium battery protection board leakage current control circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012157128A (en) * | 2011-01-25 | 2012-08-16 | Sanyo Electric Co Ltd | Overvoltage detection device, protection device and battery pack |
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2014
- 2014-10-28 CN CN201410585012.5A patent/CN104393574B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1967959A (en) * | 2006-09-01 | 2007-05-23 | 中国科技开发院芜湖分院 | Charge and discharge protecting module of lithium dynamical battery |
| CN201341019Y (en) * | 2008-12-03 | 2009-11-04 | 何岳明 | Charge and discharge protection circuit of multi-cell lithium battery |
| CN101814726A (en) * | 2010-04-14 | 2010-08-25 | 罗康林 | Battery discharge prevention circuit |
| CN204156509U (en) * | 2014-10-28 | 2015-02-11 | 芜湖天元汽车电子有限公司 | Lithium battery protection board leakage current control circuit |
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| CN104393574A (en) | 2015-03-04 |
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