CN102074989B - Equalizing circuit of lithium ion battery pack - Google Patents
Equalizing circuit of lithium ion battery pack Download PDFInfo
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- CN102074989B CN102074989B CN201010624581.8A CN201010624581A CN102074989B CN 102074989 B CN102074989 B CN 102074989B CN 201010624581 A CN201010624581 A CN 201010624581A CN 102074989 B CN102074989 B CN 102074989B
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Abstract
The invention discloses an equalizing circuit of a lithium ion battery pack. The equalizing circuit of the lithium ion battery pack comprises a rectification circuit, a filter circuit, a transformer circuit, a control circuit and an output circuit, wherein the filter circuit is connected with the rectification circuit; the transformer circuit is connected between the filter circuit and the output circuit; and the control circuit is connected with the transformer circuit and the output circuit respectively. The equalizing circuit of the lithium ion battery pack has the advantages of long service life, high safety and efficiency and the like.
Description
Technical field
The present invention relates to lithium ion battery, be specifically related to a kind of balanced charging circuit of lithium-ion battery pack.
Background technology
Lithium ion battery is with the advantage such as high-energy-density, volume be little, lightweight, and in mobile phone, notebook computer market, it has replaced other batteries completely, has 100% occupation rate; At present, lithium ion battery extends into just rapidly in electric tool, electric bicycle and other application, and its wide market prospects also more and more obtains the approval of industry.But compared with ni-mh, NI-G, lead-acid battery, to promote quickly the application and development of lithium ion battery, when the series connection of lithium ion battery group is used, the unbalanced problem of capacity limits its extensive use greatly, add the effective solution of equalizing circuit, it is expensive for jumbo lithium battery group for dragon, need especially equalizing circuit and balance policy effectively reliably, can say, realize the extensive use of high capacity lithium ion battery in large-power occasions, the efficient balance of battery cell is one of current technical bottleneck.
Summary of the invention
The problem that the present invention need solve is to provide a kind of long service life, the equalizing circuit of lithium ion battery pack that safe, efficiency is high.
To achieve these goals, the present invention designs a kind of equalizing circuit of lithium ion battery pack, and a kind of equalizing circuit of lithium ion battery pack comprises rectification circuit and the filter circuit being connected with rectification circuit, it is characterized in that: also include transformer circuit, control circuit and output circuit, described transformer circuit is connected between filter circuit and output circuit, and described control circuit is connected with transformer circuit and output circuit respectively, and described transformer circuit comprises transformer TR1, resistance R 2, R3, capacitor C 4, C5, C6, C7, diode D5, D6, D8, inductance L 2, LED 1, described transformer TR1 includes the first armature winding, the second armature winding and a secondary winding, resistance R 2, one end of R3 and capacitor C 6 is connected with terminals of the first armature winding of transformer TR1, resistance R 2, the other end of R3 and capacitor C 6 is connected with the negative pole of diode D5, the positive pole of diode D5 is connected with another terminals of the first armature winding of transformer TR1, one terminals of the second armature winding of described transformer TR1 are connected with the positive pole of diode D6, another terminals ground connection of the second armature winding, the negative pole of diode D6 respectively with capacitor C 4, C5 is connected, capacitor C 4, the other end ground connection of C5, one terminals of transformer TR1 secondary winding are connected with the positive pole of diode D8, the negative pole of diode D8 respectively with capacitor C 7, inductance L 2, resistance R 13 is connected, the other end of resistance R 13 is connected with the positive pole of LED 1, the negative pole of LED 1 is connected with another terminals of secondary winding, the other end of inductance L 2 is connected with output circuit, another terminals of the first armature winding of described transformer TR1 and terminals of secondary winding are Same Name of Ends,
Described control circuit comprises that model is VIPER12A control chip U2, light-operated chip U1, triode Q1, controllable silicon U3, resistance R 4, R6, R7, R8, one end of resistance R 6 is connected with the base stage of triode Q1, its other end is connected in series rear and triode Q1 emitter with resistance R 4 joins, one end of resistance R 7 is connected with the negative pole of diode D8, its other end is connected with the positive pole of the luminous tube of light-operated chip U1, one end of resistance R 8 is connected with the trigger end of controllable silicon U3, its other end connects the positive pole of controllable silicon U3, be also connected to resistance R 4, the two tie point of R6, the pin 4 of control chip U2 is connected with the reception pipe end of light-operated chip U1, the pin 5～8 of control chip U2 links together and is connected with the Same Name of Ends of the first armature winding of transformer TR1, the negative pole of the luminous tube of light-operated chip U1 is connected with the negative pole of controllable silicon U3 with the collector electrode of triode Q1 respectively,
Described output circuit includes resistance R 11, R12 and capacitor C 9, after resistance R 11, R12 and described resistance R 8 are connected in series, is connected in parallel between output, and capacitor C 9 is parallel between output.
Equalizing circuit of lithium ion battery pack of the present invention, because conventional lithium battery charger is that whole series-connected cell is charged together, as long-time cycle charge-discharge, easily causes each single battery voltage deviation, affects the useful life of battery.And this respectively to single battery charging, can reduce this voltage deviation, and also each cell voltage consistency, harmonious relatively good, utilization ratio and the useful life of having improved lithium ion battery group.
Brief description of the drawings:
Fig. 1 is the circuit diagram of balanced charging circuit of lithium-ion battery pack of the present invention.
Embodiment
For the ease of those skilled in the art's understanding, below in conjunction with specific embodiment and accompanying drawing, structural principle of the present invention is described in further detail:
As shown in Figure 1, be the specific embodiment of equalizing circuit of lithium ion battery pack of the present invention, a kind of equalizing circuit of lithium ion battery pack, comprises rectification circuit and the filter circuit being connected with rectification circuit, it is characterized in that: also include transformer circuit, control circuit and output circuit, described transformer circuit is connected between filter circuit and output circuit, and described control circuit is connected with transformer circuit and output circuit respectively, and described transformer circuit comprises transformer TR1, resistance R 2, R3, capacitor C 4, C5, C6, C7, diode D5, D6, D8, inductance L 2, LED 1, described transformer TR1 includes the first armature winding, the second armature winding and a secondary winding, resistance R 2, one end of R3 and capacitor C 6 is connected with terminals of the first armature winding of transformer TR1, resistance R 2, the other end of R3 and capacitor C 6 is connected with the negative pole of diode D5, the positive pole of diode D5 is connected with another terminals of the first armature winding of transformer TR1, one terminals of the second armature winding of described transformer TR1 are connected with the positive pole of diode D6, another terminals ground connection of the second armature winding, the negative pole of diode D6 respectively with capacitor C 4, C5 is connected, capacitor C 4, the other end ground connection of C5, one terminals of transformer TR1 secondary winding are connected with the positive pole of diode D8, the negative pole of diode D8 respectively with capacitor C 7, inductance L 2, resistance R 13 is connected, the other end of resistance R 13 is connected with the positive pole of LED 1, the negative pole of LED 1 is connected with another terminals of secondary winding, the other end of inductance L 2 is connected with output circuit, another terminals of the first armature winding of described transformer TR1 and terminals of secondary winding are Same Name of Ends,
Described control circuit comprises that model is VIPER12A control chip U2, light-operated chip U1, triode Q1, controllable silicon U3, resistance R 4, R6, R7, R8, one end of resistance R 6 is connected with the base stage of triode Q1, its other end is connected in series rear and triode Q1 emitter with resistance R 4 joins, one end of resistance R 7 is connected with the negative pole of diode D8, its other end is connected with the positive pole of the luminous tube of light-operated chip U1, one end of resistance R 8 is connected with the trigger end of controllable silicon U3, its other end connects the positive pole of controllable silicon U3, be also connected to resistance R 4, the two tie point of R6, the pin 4 of control chip U2 is connected with the reception pipe end of light-operated chip U1, the pin 5～8 of control chip U2 links together and is connected with the Same Name of Ends of the first armature winding of transformer TR1, the negative pole of the luminous tube of light-operated chip U1 is connected with the negative pole of controllable silicon U3 with the collector electrode of triode Q1 respectively,
Described output circuit includes resistance R 11, R12 and capacitor C 9, after resistance R 11, R12 and described resistance R 8 are connected in series, is connected in parallel between output, and capacitor C 9 is parallel between output.
Above-described embodiment is only single-lithium-battery pond charging principle, as how many batteries of connecting, and just needs how many power supplys, and each power supply is independently.As be 13 crosstalk ponds (single battery voltage is 3.7V), just needing 13 same power supplys, 13 power supplys can divide two block power supply plates to place.
Claims (1)
1. an equalizing circuit of lithium ion battery pack, comprises rectification circuit and the filter circuit being connected with rectification circuit, it is characterized in that: also include transformer circuit, control circuit and output circuit, described transformer circuit is connected between filter circuit and output circuit, and described control circuit is connected with transformer circuit and output circuit respectively, and described transformer circuit comprises transformer TR1, resistance R 2, R3, capacitor C 4, C5, C6, C7, diode D5, D6, D8, inductance L 2, LED 1, described transformer TR1 includes the first armature winding, the second armature winding and a secondary winding, resistance R 2, one end of R3 and capacitor C 6 is connected with terminals of the first armature winding of transformer TR1, resistance R 2, the other end of R3 and capacitor C 6 is connected with the negative pole of diode D5, the positive pole of diode D5 is connected with another terminals of the first armature winding of transformer TR1, one terminals of the second armature winding of described transformer TR1 are connected with the positive pole of diode D6, another terminals ground connection of the second armature winding, the negative pole of diode D6 respectively with capacitor C 4, C5 is connected, capacitor C 4, the other end ground connection of C5, one terminals of transformer TR1 secondary winding are connected with the positive pole of diode D8, the negative pole of diode D8 respectively with capacitor C 7, inductance L 2, resistance R 13 is connected, the other end of resistance R 13 is connected with the positive pole of LED 1, the negative pole of LED 1 is connected with another terminals of secondary winding, the other end of inductance L 2 is connected with output circuit, another terminals of the first armature winding of described transformer TR1 and terminals of secondary winding are Same Name of Ends,
Described control circuit comprises that model is VIPER12A control chip U2, light-operated chip U1, triode Q1, controllable silicon U3, resistance R 4, R6, R7, R8, one end of resistance R 6 is connected with the base stage of triode Q1, its other end is connected in series rear and triode Q1 emitter with resistance R 4 joins, one end of resistance R 7 is connected with the negative pole of diode D8, its other end is connected with the positive pole of the luminous tube of light-operated chip U1, one end of resistance R 8 is connected with the trigger end of controllable silicon U3, its other end connects the positive pole of controllable silicon U3, be also connected to resistance R 4, the two tie point of R6, the pin 4 of control chip U2 is connected with the reception pipe end of light-operated chip U1, the pin 5～8 of control chip U2 links together and is connected with the Same Name of Ends of the first armature winding of transformer TR1, the negative pole of the luminous tube of light-operated chip U1 is connected with the negative pole of controllable silicon U3 with the collector electrode of triode Q1 respectively,
Described output circuit includes resistance R 11, R12 and capacitor C 9, after resistance R 11, R12 and described resistance R 8 are connected in series, is connected in parallel between output, and capacitor C 9 is parallel between output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010624581.8A CN102074989B (en) | 2010-12-31 | 2010-12-31 | Equalizing circuit of lithium ion battery pack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010624581.8A CN102074989B (en) | 2010-12-31 | 2010-12-31 | Equalizing circuit of lithium ion battery pack |
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| CN102074989A CN102074989A (en) | 2011-05-25 |
| CN102074989B true CN102074989B (en) | 2014-09-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112054575B (en) * | 2020-09-07 | 2022-01-04 | 河南理工大学 | LC energy storage based series-parallel battery pack integrated equalization method |
| CN113993245B (en) * | 2021-11-22 | 2024-09-24 | 欧普照明股份有限公司 | LED driving power supply |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145542A (en) * | 1995-06-16 | 1997-03-19 | Smh管理服务有限公司 | Charger for electrical energy accumulator |
| US6511764B1 (en) * | 1997-10-20 | 2003-01-28 | Usar Systems, Inc. | Voltaic pile with charge equalizing system |
| CN101262140A (en) * | 2008-04-30 | 2008-09-10 | 刘云海 | Serial and parallel switching and charging method and charging device for lithium dynamic battery unit |
| CN101345431A (en) * | 2008-08-20 | 2009-01-14 | 东风汽车股份有限公司 | Charging equalization device for series storage battery pack |
| CN101431248A (en) * | 2007-11-06 | 2009-05-13 | 比亚迪股份有限公司 | Equalizing charge apparatus and equalizing charge method |
-
2010
- 2010-12-31 CN CN201010624581.8A patent/CN102074989B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145542A (en) * | 1995-06-16 | 1997-03-19 | Smh管理服务有限公司 | Charger for electrical energy accumulator |
| US6511764B1 (en) * | 1997-10-20 | 2003-01-28 | Usar Systems, Inc. | Voltaic pile with charge equalizing system |
| CN101431248A (en) * | 2007-11-06 | 2009-05-13 | 比亚迪股份有限公司 | Equalizing charge apparatus and equalizing charge method |
| CN101262140A (en) * | 2008-04-30 | 2008-09-10 | 刘云海 | Serial and parallel switching and charging method and charging device for lithium dynamic battery unit |
| CN101345431A (en) * | 2008-08-20 | 2009-01-14 | 东风汽车股份有限公司 | Charging equalization device for series storage battery pack |
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| CN102074989A (en) | 2011-05-25 |
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Effective date of registration: 20191205 Address after: Building 2, building 8 and 9, innovation and entrepreneurship Park, Shuangpai industrial concentration zone, Shuangpai County, Yongzhou City, Hunan Province Patentee after: Hunan Max new energy Co., Ltd Address before: 523000 Guangdong city of Dongguan province Dalang Zhen Gao Ying Cun Yinying Road No. 88 two floor Patentee before: Dongguan Haitawei Electronic Technology Co., Ltd. |
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