CN204216576U - A kind of lithium ionic battery protection circuit - Google Patents
A kind of lithium ionic battery protection circuit Download PDFInfo
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- CN204216576U CN204216576U CN201420740012.3U CN201420740012U CN204216576U CN 204216576 U CN204216576 U CN 204216576U CN 201420740012 U CN201420740012 U CN 201420740012U CN 204216576 U CN204216576 U CN 204216576U
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- negative
- bus
- resistance
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- ion cell
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 14
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 93
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000005516 engineering process Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A kind of lithium ionic battery protection circuit, anode interface B+ and with negative pole interface B-, positive bus, negative bus, positive bus is provided with positive discharge interface P+ and positive pole charging inlet TP+, negative bus is provided with negative discharge interface P-and negative pole charging inlet TP-, the input access positive bus of resistance R1, the output of resistance R1 is connected with electric capacity C1, the other end access negative bus of electric capacity C1, control unit U1 is arranged in negative bus, control unit U1 accesses the connected node between resistance R1 output and electric capacity C1, control unit U1 is connected with resistance R2, resistance R2 other end access negative bus.The utility model can prevent lithium ion battery from overcharging or cross the damage of lithium ion battery of being rivals in a contest, and improves the useful life of lithium ion battery; Also have volume little, cost is low simultaneously, is applicable to basic, normal, high end electronic product or the use of microminiature electronic product, practical, easy to utilize and universal in electronic product.
Description
Technical field
The utility model relates to a kind of battery protecting circuit, is specifically related to a kind of lithium ionic battery protection circuit.
Background technology
Along with the development of lithium ion battery technology; lithium ion battery have can discharge and recharge, the advantage such as to recycle and be widely used in industry-by-industry and field, as science and technology, military affairs, day electronic product, portable power source etc.; need to increase a protective circuit during lithium ion battery cycle charge-discharge in lithium ion battery to protect lithium ion battery; prevent from lithium ion battery from overcharging or cross putting; damage lithium ion battery, reduce the useful life of lithium ion battery.At present; it is larger that the battery protecting circuit circuit that cell production companies often uses compares specification; complex circuit; be unfavorable for miniaturization and microminiaturization; can not be used in microminiature electronic product, the words making miniature circuit then cost and cost high, be not suitable in different electronic products; make it use by restriction to a certain extent, be unfavorable for promoting the use of and popularize production.
Summary of the invention
In view of this, technical problem to be solved in the utility model be a kind of cost low, miniature prevent overcharge or cross the lithium ionic battery protection circuit put.
In order to solve the problems of the technologies described above, the utility model adopts following scheme to realize: a kind of lithium ionic battery protection circuit, the anode interface B+ be connected with lithium ion cell positive and the negative pole interface B-be connected with lithium ion battery negative, the positive bus be connected with anode interface B+, the negative bus be connected with negative pole interface B-, the other end of positive bus is provided with positive discharge interface P+ and positive pole charging inlet TP+, the other end of negative bus is provided with negative discharge interface P-and negative pole charging inlet TP-, comprise resistance R1, resistance R2, electric capacity C1 and control unit U1, the input access positive bus of resistance R1, the output of resistance R1 is connected with electric capacity C1, the other end access negative bus of electric capacity C1, control unit U1 is arranged in negative bus, the control port S1 of control unit accesses the connected node between negative bus and electric capacity C1, the control port S2 of control unit U1 accesses the connected node between negative bus and negative pole charging inlet TP-, the power supply port VDD of control unit U1 accesses the connected node between resistance R1 output and electric capacity C1, the mistake of control unit U1 flows through puts test side VM and is connected with the output of resistance R2, negative bus between the input access control unit U1 of resistance R2 and negative pole charging inlet TP-.
Wherein, described control unit U1 is li-ion cell protection surface-mounted integrated circuit.
Wherein, the model of described li-ion cell protection surface-mounted integrated circuit is ITM-UP29A.
Wherein, the model of described li-ion cell protection surface-mounted integrated circuit is ITM-SS71A, and the negative pole port VSS access of described li-ion cell protection surface-mounted integrated circuit is connected the negative bus between the control port S1 of control unit U1 with electric capacity.
Compared with prior art, protective circuit of the present utility model can be protected the discharge and recharge of lithium ion battery, prevents lithium ion battery from overcharging or crosses the damage of lithium ion battery of being rivals in a contest, improve the useful life of lithium ion battery; Electric capacity C1 is utilized to carry out burning voltage; make the stability and the performance that improve protective circuit; also there is volume simultaneously little; cost is low; be applicable to basic, normal, high end electronic product or the use of microminiature electronic product; practical, easy to utilize and universal in electronic product, improve the competitiveness of enterprise.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the utility model embodiment 1.
Fig. 2 is the circuit theory diagrams of the utility model embodiment 2.
Embodiment
In order to allow those skilled in the art understand the technical solution of the utility model better, below in conjunction with accompanying drawing, the utility model is further elaborated.
Embodiment 1
As shown in Figure 1; a kind of lithium ionic battery protection circuit; the anode interface B+ be connected with lithium ion cell positive and the negative pole interface B-be connected with lithium ion battery negative; the positive bus be connected with anode interface B+; the negative bus be connected with negative pole interface B-; the other end of positive bus is provided with positive discharge interface P+ and positive pole charging inlet TP+; the other end of negative bus is provided with negative discharge interface P-and negative pole charging inlet TP-, comprises resistance R1, resistance R2, electric capacity C1 and li-ion cell protection surface-mounted integrated circuit U1.The model of the li-ion cell protection surface-mounted integrated circuit used is ITM-UP29A.The input access positive bus of resistance R1, the output of resistance R1 is connected with electric capacity C1, the other end access negative bus of electric capacity C1, li-ion cell protection surface-mounted integrated circuit U1 is arranged in negative bus, the control port S1 of li-ion cell protection surface-mounted integrated circuit U1 accesses the connected node between negative bus and electric capacity C1, the control port S2 of li-ion cell protection surface-mounted integrated circuit U1 accesses the connected node between negative bus and negative pole charging inlet TP-, the power supply port VDD of li-ion cell protection surface-mounted integrated circuit U1 accesses the connected node between resistance R1 output and electric capacity C1, the mistake of li-ion cell protection surface-mounted integrated circuit U1 flows through puts test side VM and is connected with the output of resistance R2, negative bus between the input access li-ion cell protection surface-mounted integrated circuit U1 and negative pole charging inlet TP-of resistance R2.
During charging, the charging positive pole of external power source is connected with positive pole charging inlet TP+ and negative pole charging inlet TP-respectively with negative pole, give be connected with anode interface B+ and negative pole interface B-and lithium ion cell charging, powered to li-ion cell protection surface-mounted integrated circuit U1 by the power supply port VDD of li-ion cell protection surface-mounted integrated circuit U1, conducting between the control port S1 of li-ion cell protection surface-mounted integrated circuit U1 and the control port S2 of li-ion cell protection surface-mounted integrated circuit U1, external power source is to lithium ion cell charging; When lithium ion battery overcharges; when the mistake of li-ion cell protection surface-mounted integrated circuit U1 flow through the voltage putting test side VM be less than the voltage of the control port S2 of li-ion cell protection surface-mounted integrated circuit U1 time; disconnect between the control port S1 of li-ion cell protection surface-mounted integrated circuit U1 and the control port S2 of li-ion cell protection surface-mounted integrated circuit U1; external voltage stops, to lithium ion cell charging, preventing process.
During electric discharge, positive discharge interface P+ and negative discharge interface P-are connected with the positive pole of discharge equipment and negative electrode respectively, conducting between the control port S1 of li-ion cell protection surface-mounted integrated circuit U1 and the control port S2 of li-ion cell protection surface-mounted integrated circuit U1, external power source is to lithium ion cell charging; When lithium ion battery battery presses through low; when the mistake of li-ion cell protection surface-mounted integrated circuit U1 flow through the voltage putting test side VM be less than the voltage of the control port S2 of li-ion cell protection surface-mounted integrated circuit U1 time; disconnect between the control port S1 of li-ion cell protection surface-mounted integrated circuit U1 and the control port S2 of li-ion cell protection surface-mounted integrated circuit U1; external voltage stops to lithium ion cell charging, and protection lithium battery prevented from putting.
Embodiment 2
As shown in Figure 2; a kind of lithium ionic battery protection circuit; the anode interface B+ be connected with lithium ion cell positive and the negative pole interface B-be connected with lithium ion battery negative; the positive bus be connected with anode interface B+; the negative bus be connected with negative pole interface B-; the other end of positive bus is provided with positive discharge interface P+ and positive pole charging inlet TP+; the other end of negative bus is provided with negative discharge interface P-and negative pole charging inlet TP-, comprises resistance R1, resistance R2, electric capacity C1 and li-ion cell protection surface-mounted integrated circuit U1.The model of the li-ion cell protection surface-mounted integrated circuit used is ITM-SS71A.The input access positive bus of resistance R1, the output of resistance R1 is connected with electric capacity C1, the other end access negative bus of electric capacity C1, li-ion cell protection surface-mounted integrated circuit U1 is arranged in negative bus, the control port S1 of li-ion cell protection surface-mounted integrated circuit U1 accesses the connected node between negative bus and electric capacity C1, the control port S2 of li-ion cell protection surface-mounted integrated circuit U1 accesses the connected node between negative bus and negative pole charging inlet TP-, the power supply port VDD of li-ion cell protection surface-mounted integrated circuit U1 accesses the connected node between resistance R1 output and electric capacity C1, the mistake of li-ion cell protection surface-mounted integrated circuit U1 flows through puts test side VM and is connected with the output of resistance R2, negative bus between the input access li-ion cell protection surface-mounted integrated circuit U1 and negative pole charging inlet TP-of resistance R2.The negative pole port VSS access of described li-ion cell protection surface-mounted integrated circuit is connected the negative bus between the control port S1 of control unit U1 with electric capacity.
During charging, the charging positive pole of external power source is connected with positive pole charging inlet TP+ and negative pole charging inlet TP-respectively with negative pole, give be connected with anode interface B+ and negative pole interface B-and lithium ion cell charging, powered to li-ion cell protection surface-mounted integrated circuit U1 by the power supply port VDD of li-ion cell protection surface-mounted integrated circuit U1, conducting between the control port S1 of li-ion cell protection surface-mounted integrated circuit U1 and the control port S2 of li-ion cell protection surface-mounted integrated circuit U1, external power source is to lithium ion cell charging; When lithium ion battery overcharges; when the mistake of li-ion cell protection surface-mounted integrated circuit U1 flow through the voltage putting test side VM be less than the voltage of the control port S2 of li-ion cell protection surface-mounted integrated circuit U1 time; disconnect between the control port S1 of li-ion cell protection surface-mounted integrated circuit U1 and the control port S2 of li-ion cell protection surface-mounted integrated circuit U1; external voltage stops, to lithium ion cell charging, preventing process.
During electric discharge, positive discharge interface P+ and negative discharge interface P-are connected with the positive pole of discharge equipment and negative electrode respectively, conducting between the control port S1 of li-ion cell protection surface-mounted integrated circuit U1 and the control port S2 of li-ion cell protection surface-mounted integrated circuit U1, external power source is to lithium ion cell charging; When lithium ion battery battery presses through low; when the mistake of li-ion cell protection surface-mounted integrated circuit U1 flow through the voltage putting test side VM be less than the voltage of the control port S2 of li-ion cell protection surface-mounted integrated circuit U1 time; disconnect between the control port S1 of li-ion cell protection surface-mounted integrated circuit U1 and the control port S2 of li-ion cell protection surface-mounted integrated circuit U1; external voltage stops to lithium ion cell charging, and protection lithium battery prevented from putting.
Model described in above embodiment is the common practise that the li-ion cell protection surface-mounted integrated circuit of ITM-UP29A and ITM-SS71A is well known to those skilled in the art; Korea S ITM SEMICONDUCTOR.CO. can be used; this model li-ion cell protection surface-mounted integrated circuit that LTD produces; also can be this model li-ion cell protection surface-mounted integrated circuit that other integrated circuit board companies produce, again do not enumerate and set forth.
Above-described embodiment is only wherein specific implementation of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these apparent replacement forms all belong to protection range of the present utility model.
Claims (4)
1. a lithium ionic battery protection circuit, the anode interface B+ be connected with lithium ion cell positive and the negative pole interface B-be connected with lithium ion battery negative, the positive bus be connected with anode interface B+, the negative bus be connected with negative pole interface B-, the other end of positive bus is provided with positive discharge interface P+ and positive pole charging inlet TP+, the other end of negative bus is provided with negative discharge interface P-and negative pole charging inlet TP-, it is characterized in that, comprise resistance R1, resistance R2, electric capacity C1 and control unit U1, the input access positive bus of resistance R1, the output of resistance R1 is connected with electric capacity C1, the other end access negative bus of electric capacity C1, control unit U1 is arranged in negative bus, the control port S1 of control unit accesses the connected node between negative bus and electric capacity C1, the control port S2 of control unit U1 accesses the connected node between negative bus and negative pole charging inlet TP-, the power supply port VDD of control unit U1 accesses the connected node between resistance R1 output and electric capacity C1, the mistake of control unit U1 flows through puts test side VM and is connected with the output of resistance R2, negative bus between the input access control unit U1 of resistance R2 and negative pole charging inlet TP-.
2. lithium ionic battery protection circuit according to claim 1, is characterized in that, described control unit U1 is li-ion cell protection surface-mounted integrated circuit.
3. lithium ionic battery protection circuit according to claim 2, is characterized in that, the model of described li-ion cell protection surface-mounted integrated circuit is ITM-UP29A.
4. lithium ionic battery protection circuit according to claim 2; it is characterized in that; the model of described li-ion cell protection surface-mounted integrated circuit is ITM-SS71A, and the negative pole port VSS access of described li-ion cell protection surface-mounted integrated circuit is connected the negative bus between the control port S1 of control unit U1 with electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420740012.3U CN204216576U (en) | 2014-12-02 | 2014-12-02 | A kind of lithium ionic battery protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420740012.3U CN204216576U (en) | 2014-12-02 | 2014-12-02 | A kind of lithium ionic battery protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216576U true CN204216576U (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420740012.3U Expired - Fee Related CN204216576U (en) | 2014-12-02 | 2014-12-02 | A kind of lithium ionic battery protection circuit |
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| Country | Link |
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| CN (1) | CN204216576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557471A (en) * | 2018-12-28 | 2019-04-02 | 深圳市海斯科技有限公司 | A kind of battery monitoring system |
-
2014
- 2014-12-02 CN CN201420740012.3U patent/CN204216576U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557471A (en) * | 2018-12-28 | 2019-04-02 | 深圳市海斯科技有限公司 | A kind of battery monitoring system |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Aerospace Science and Technology Industrial Park, 51 No. 516008 Guangdong province Huizhou City Zhongkai Road No. 3 Patentee after: HUIZHOU EVERPOWER TECHNOLOGY Co.,Ltd. Address before: Aerospace Science and Technology Industrial Park, 51 No. 516008 Guangdong province Huizhou City Zhongkai Road No. 3 Patentee before: HUIZHOU HENGTAI TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 |
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| CF01 | Termination of patent right due to non-payment of annual fee |