CN204216604U - Lithium battery protection board light current lock control circuit - Google Patents
Lithium battery protection board light current lock control circuit Download PDFInfo
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- CN204216604U CN204216604U CN201420628421.4U CN201420628421U CN204216604U CN 204216604 U CN204216604 U CN 204216604U CN 201420628421 U CN201420628421 U CN 201420628421U CN 204216604 U CN204216604 U CN 204216604U
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Abstract
The utility model discloses a kind of lithium battery protection board light current lock control circuit, comprise light current lock-switch control circuit module, battery BAT1, triode Q10 and the system load of described light current lock-switch control circuit module and ground connection are connected, and described light current lock-switch control circuit module is made up of triode Q1, Q2, Q3, Q4 and voltage follower U1A, U1B, U1C, U1D; This lithium battery protection board light current lock control circuit adopts Digital Logic gate circuit in conjunction with analog circuit, compared with simple analog circuit, enhances the antijamming capability of system, can detect lithium battery state, and can control the output of lithium battery group.
Description
Technical field
The utility model relates to field of lithium, particularly relates to a kind of lithium battery protection board light current lock control circuit.
Background technology
Lithium battery protection board is used for the charge and discharge protecting of lithium battery group.Can ensure when being full of electricity that the voltage differences between each cell is less than set point (general ± 20mV), realize all filling of each cell of battery pack, effectively improve the charging effect under serial connection charge mode.Detect the overvoltage of each cell in battery pack, under-voltage, overcurrent, short circuit, over-temperature condition simultaneously, protect and extend battery.Under-voltage protection makes each single battery avoid battery to damage because of overdischarge when discharging and using.Product can long-term reliable and stable work in-20 DEG C ~+60 DEG C ambient temperature ranges.In order to realize light current lock circuit, existing lithium battery protection board adopts analog circuit, and this relating to makes the antijamming capability of lithium battery protection board poor.
Summary of the invention
Technical problem to be solved in the utility model is, provide a kind of lithium battery protection board light current lock control circuit, this circuit can detect lithium battery state and can control the output of lithium battery group.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: a kind of lithium battery protection board light current lock control circuit, comprise light current lock-switch control circuit module, battery BAT1, triode Q10 and the system load of described light current lock-switch control circuit module and ground connection are connected, and described light current lock-switch control circuit module is made up of triode Q1, Q2, Q3, Q4 and voltage follower U1A, U1B, U1C, U1D; The emitter of described triode Q1 is in parallel with system load, the collector electrode of base stage connecting triode Q3, the base stage of collector electrode connecting triode Q2; The collector electrode of the collector electrode connecting triode Q4 of described triode Q2, grounded emitter; The base stage of described triode Q3 connects the octal h of voltage follower U1D, grounded emitter; The base stage of described triode Q4 connects logic control signal, grounded emitter; The base stage of the tenth tripod m connecting triode Q3 of described voltage follower U1A, 12 pin l is in parallel with the tenth tripod m, 11 pin k is connected with the 6th pin f of voltage follower U1C, and the collector electrode of triode Q2, Q4 is connected in parallel between the 11 pin k and the 6th pin f; The first pin a of described voltage follower U1B is connected with the 4th pin d of voltage follower U1C, and crus secunda b is connected with the tenth pin j of voltage follower U1D, and tripod c is connected with triode Q10, and the 14 pin n connects supply voltage VCC, the 7th pin g ground connection; The 5th pin e of described voltage follower U1C is connected in parallel between the base stage of triode Q3 and the octal h of voltage follower U1D; The octal h of voltage follower U1D is in parallel with the 9th pin i, the 9th pin i ground connection.
As preferably, be in series with resistance R1 between the emitter of described triode Q1 and system load, between emitter and base stage, be parallel with resistance R5.
As preferably, be parallel with resistance R16 between the base stage of described triode Q2 and emitter, resistance R16 be parallel with diode Z1.
As preferably, be in series with resistance R11 between the collector electrode of described triode Q3 and the base stage of triode Q1, between base stage and emitter, be parallel with resistance R15.
As preferably, be parallel with resistance R17 between the base stage of described triode Q4 and emitter, resistance R17 be parallel with electric capacity C4.
As preferably, diode D2 is in series with between the 11 pin k of described voltage follower U1A and the 6th pin f of voltage follower U1C, resistance R7, R8, R14 is in series with successively between tenth tripod m and the base stage of triode Q3, and be parallel with supply voltage VCC between resistance R7 and resistance R8, be provided with light current switch S 1 between resistance R8 and resistance R14, light current switch S 1 be parallel with electric capacity C2.
As preferably, resistance R10 is in series with between the first pin a of described voltage follower U1B and the 4th pin d of voltage follower U1C, be in series with resistance R9 between the tenth pin j of crus secunda b and voltage follower U1D, between tripod c and triode Q10, be in series with resistance R4.
As preferably, the 6th pin f of described voltage follower U1C is parallel with the resistance R6 be connected with supply voltage VCC, the 5th pin e is in series with diode D3, be parallel with the electric capacity C3 of ground connection between diode D3 and the 5th pin e, electric capacity C3 be parallel with resistance R13.
As preferably, between the octal h of described voltage follower U1D and the base stage of triode Q3, be in series with electric capacity C1, the 9th pin i be in series with resistance R2, described resistance R2 be parallel with the diode D4 being connected supply voltage VCC between ground connection.
Compared with prior art; usefulness of the present utility model is: this lithium battery protection board light current lock control circuit adopts Digital Logic gate circuit in conjunction with analog circuit; compared with simple analog circuit; enhance the antijamming capability of system; lithium battery state can be detected, and the output of lithium battery group can be controlled.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of lithium battery protection board light current of the utility model lock control circuit structural representation.
In figure: 1, light current lock-switch control circuit module.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
A kind of lithium battery protection board light current lock control circuit shown in Fig. 1, comprise light current lock-switch control circuit module 1, battery BAT1, triode Q10 and the system load of described light current lock-switch control circuit module 1 and ground connection are connected, and described light current lock-switch control circuit module 1 is made up of triode Q1, Q2, Q3, Q4 and voltage follower U1A, U1B, U1C, U1D, the emitter of described triode Q1 is in parallel with system load, the collector electrode of base stage connecting triode Q3, the base stage of collector electrode connecting triode Q2, and be in series with resistance R1 between the emitter of described triode Q1 and system load, be parallel with resistance R5 between emitter and base stage, the collector electrode of the collector electrode connecting triode Q4 of described triode Q2, grounded emitter, and be parallel with resistance R16 between the base stage of described triode Q2 and emitter, resistance R16 is parallel with diode Z1, the base stage of described triode Q3 connects the octal h of voltage follower U1D, grounded emitter, and is in series with resistance R11 between the collector electrode of described triode Q3 and the base stage of triode Q1, is parallel with resistance R15 between base stage and emitter, the base stage of described triode Q4 connects logic control signal, grounded emitter, and is parallel with resistance R17 between the base stage of described triode Q4 and emitter, resistance R17 is parallel with electric capacity C4, the base stage of the tenth tripod m connecting triode Q3 of described voltage follower U1A, 12 pin l is in parallel with the tenth tripod m, 11 pin k is connected with the 6th pin f of voltage follower U1C, and triode Q2, the collector electrode of Q4 is connected in parallel between the 11 pin k and the 6th pin f, diode D2 is in series with between the 11 pin k of wherein said voltage follower U1A and the 6th pin f of voltage follower U1C, resistance R7 is in series with successively between tenth tripod m and the base stage of triode Q3, R8, R14, and be parallel with supply voltage VCC between resistance R7 and resistance R8, light current switch S 1 is provided with between resistance R8 and resistance R14, light current switch S 1 is parallel with electric capacity C2, the first pin a of described voltage follower U1B is connected with the 4th pin d of voltage follower U1C, crus secunda b is connected with the tenth pin j of voltage follower U1D, tripod c is connected with triode Q10,14 pin n connects supply voltage VCC, 7th pin g ground connection, resistance R10 is in series with between the first pin a of wherein said voltage follower U1B and the 4th pin d of voltage follower U1C, be in series with resistance R9 between the tenth pin j of crus secunda b and voltage follower U1D, between tripod c and triode Q10, be in series with resistance R4, the 5th pin e of described voltage follower U1C is connected in parallel between the base stage of triode Q3 and the octal h of voltage follower U1D, the 6th pin f of wherein said voltage follower U1C is parallel with the resistance R6 be connected with supply voltage VCC, 5th pin e is in series with diode D3, be parallel with the electric capacity C3 of ground connection between diode D3 and the 5th pin e, electric capacity C3 be parallel with resistance R13, the octal h of voltage follower U1D is in parallel with the 9th pin i, 9th pin i ground connection, electric capacity C1 is in series with between the octal h of wherein said voltage follower U1D and the base stage of triode Q3,9th pin i is in series with resistance R2, described resistance R2 be parallel with the diode D4 being connected supply voltage VCC between ground connection.
Concrete, when light current switch S 1 closes, between resistance R14 and R15, form high level, the 5th pin e of control voltage follower U1C is high, the 4th pin d of voltage follower U1C exports low, and what level the crus secunda b regardless of voltage follower U1B is, the tripod c of U1B necessarily exports high; When the tenth pin j of lithium battery voltage follower U1D exports high level, the tripod c output low level of voltage follower U1B can be caused, thus carry out under-voltage protection.
This lithium battery protection board light current lock control circuit adopts Digital Logic gate circuit in conjunction with analog circuit, compared with simple analog circuit, enhances the antijamming capability of system, can detect lithium battery state, and can control the output of lithium battery group.
It is emphasized that: be only preferred embodiment of the present utility model above, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (9)
1. a lithium battery protection board light current lock control circuit, comprise light current lock-switch control circuit module (1), battery BAT1, triode Q10 and the system load of described light current lock-switch control circuit module (1) and ground connection are connected, and it is characterized in that: described light current lock-switch control circuit module (1) is made up of triode Q1, Q2, Q3, Q4 and voltage follower U1A, U1B, U1C, U1D; The emitter of described triode Q1 is in parallel with system load, the collector electrode of base stage connecting triode Q3, the base stage of collector electrode connecting triode Q2; The collector electrode of the collector electrode connecting triode Q4 of described triode Q2, grounded emitter; The base stage of described triode Q3 connects the octal h of voltage follower U1D, grounded emitter; The base stage of described triode Q4 connects logic control signal, grounded emitter; The base stage of the tenth tripod m connecting triode Q3 of described voltage follower U1A, 12 pin l is in parallel with the tenth tripod m, 11 pin k is connected with the 6th pin f of voltage follower U1C, and the collector electrode of triode Q2, Q4 is connected in parallel between the 11 pin k and the 6th pin f; The first pin a of described voltage follower U1B is connected with the 4th pin d of voltage follower U1C, and crus secunda b is connected with the tenth pin j of voltage follower U1D, and tripod c is connected with triode Q10, and the 14 pin n connects supply voltage VCC, the 7th pin g ground connection; The 5th pin e of described voltage follower U1C is connected in parallel between the base stage of triode Q3 and the octal h of voltage follower U1D; The octal h of voltage follower U1D is in parallel with the 9th pin i, the 9th pin i ground connection.
2. lithium battery protection board light current lock control circuit according to claim 1, is characterized in that: be in series with resistance R1 between the emitter of described triode Q1 and system load, be parallel with resistance R5 between emitter and base stage.
3. lithium battery protection board light current lock control circuit according to claim 1, is characterized in that: be parallel with resistance R16 between the base stage of described triode Q2 and emitter, resistance R16 be parallel with diode Z1.
4. lithium battery protection board light current lock control circuit according to claim 1, is characterized in that: be in series with resistance R11 between the collector electrode of described triode Q3 and the base stage of triode Q1, be parallel with resistance R15 between base stage and emitter.
5. lithium battery protection board light current lock control circuit according to claim 1, is characterized in that: be parallel with resistance R17 between the base stage of described triode Q4 and emitter, resistance R17 be parallel with electric capacity C4.
6. lithium battery protection board light current lock control circuit according to claim 1; it is characterized in that: between the 11 pin k of described voltage follower U1A and the 6th pin f of voltage follower U1C, be in series with diode D2; resistance R7, R8, R14 is in series with successively between tenth tripod m and the base stage of triode Q3; and be parallel with supply voltage VCC between resistance R7 and resistance R8; be provided with light current switch S 1 between resistance R8 and resistance R14, light current switch S 1 be parallel with electric capacity C2.
7. lithium battery protection board light current lock control circuit according to claim 1; it is characterized in that: between the first pin a of described voltage follower U1B and the 4th pin d of voltage follower U1C, be in series with resistance R10; be in series with resistance R9 between the tenth pin j of crus secunda b and voltage follower U1D, between tripod c and triode Q10, be in series with resistance R4.
8. lithium battery protection board light current lock control circuit according to claim 1; it is characterized in that: the 6th pin f of described voltage follower U1C is parallel with the resistance R6 be connected with supply voltage VCC; 5th pin e is in series with diode D3; be parallel with the electric capacity C3 of ground connection between diode D3 and the 5th pin e, electric capacity C3 be parallel with resistance R13.
9. lithium battery protection board light current lock control circuit according to claim 1; it is characterized in that: between the octal h of described voltage follower U1D and the base stage of triode Q3, be in series with electric capacity C1; 9th pin i is in series with resistance R2, described resistance R2 be parallel with the diode D4 being connected supply voltage VCC between ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420628421.4U CN204216604U (en) | 2014-10-28 | 2014-10-28 | Lithium battery protection board light current lock control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420628421.4U CN204216604U (en) | 2014-10-28 | 2014-10-28 | Lithium battery protection board light current lock control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204216604U true CN204216604U (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420628421.4U Expired - Fee Related CN204216604U (en) | 2014-10-28 | 2014-10-28 | Lithium battery protection board light current lock control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410110A (en) * | 2014-10-28 | 2015-03-11 | 芜湖天元汽车电子有限公司 | Lithium battery guard plate light-current lock control circuit |
-
2014
- 2014-10-28 CN CN201420628421.4U patent/CN204216604U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410110A (en) * | 2014-10-28 | 2015-03-11 | 芜湖天元汽车电子有限公司 | Lithium battery guard plate light-current lock control circuit |
| CN104410110B (en) * | 2014-10-28 | 2018-11-27 | 芜湖天元汽车电子有限公司 | A kind of lithium battery protection board light current lock control circuit |
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Effective date of registration: 20160413 Address after: 01, building 4, Metro 69, 210000 Olympic Sports Avenue, Jianye District, Jiangsu, Nanjing Patentee after: Jiangsu Zijin Wancheng Technology Co., Ltd. Address before: 241007 Anhui city of Wuhu province Jiujiang Economic Development Zone No. 7 West leap Patentee before: Wuhu Tianyuan Automobile Electron Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20171028 |
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| CF01 | Termination of patent right due to non-payment of annual fee |