CN102148411A - Circulating fast equalization method and circuit for serial battery pack - Google Patents
Circulating fast equalization method and circuit for serial battery pack Download PDFInfo
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- CN102148411A CN102148411A CN2011100523138A CN201110052313A CN102148411A CN 102148411 A CN102148411 A CN 102148411A CN 2011100523138 A CN2011100523138 A CN 2011100523138A CN 201110052313 A CN201110052313 A CN 201110052313A CN 102148411 A CN102148411 A CN 102148411A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to a circulating fast equalization method and circuit for a serial battery pack. In the equalization method, a controller circularly switches on battery units in the serial battery pack one by one based on a cycle T, each battery unit is formed by one or a plurality of single batteries in parallel or in series and all the battery units have consistent attributes, energy is exchanged between the switched-on battery units and a shared energy storage device; the equalization circuit comprises the controller and an execution circuit connected with the controller, wherein the execution circuit is composed of a plurality of electronic switches and the shared energy storage device, the electronic switches are connected with the controller, and anodes and cathodes of all the battery units in the serial battery pack are connected to two ends of the shared energy storage device respectively through the electronic switches. The method and the circuit can realize the fast equalization of the battery units in the serial battery pack to lead the voltages of all the battery units to be consistent, thereby enhancing the using performance of the battery pack and prolonging the service life of the battery pack, besides, the method and the circuit have the characteristics of fastness, effectiveness and low cost.
Description
Technical field
The present invention relates to a kind of equalization methods and the circuit of series battery, relate in particular to circulating fast uniform method of a kind of series battery and circuit.
Background technology
Along with the attention of the mankind to its own existence environment; the understanding of the huge side effect crisis that modern civilization is brought is deepened; to the change that redefines and be familiar with of future human society industrial civilization and material progress, people recognize deeply to develop the economy and must follow two big principles: the reasonable use of environmental protection and non-renewable resources.Electric bicycle, electric tool, electric automobile etc. are complied with this two principal themes notion and the national product that produces and develop just, are human right to making of autoprotection, are the certainty that man and nature concern correct processing.
All need to use the battery pack of series connection monomer battery pack one-tenth on electric bicycle, electric tool, the electric automobile etc., to adapt to high-tension demand.Owing to reasons such as production technology cause the difference of cell capacity and performance, battery pack is being carried out in the charging and discharging process, during charging, the cell of the little poor performance of capacity can produce and overcharge phenomenon; During discharge, the cell of the little poor performance of capacity had puts phenomenon, causes the battery pack utilance low, and this difference will inevitably worsen along with the lasting use of battery pack simultaneously; The cell inconsistency of this continuous deterioration can be aggravated the decay of battery performance, finally causes finishing in advance the life-span of battery pack.Therefore, series battery employing equalizing circuit is that Chinese scholars and the consistent of industry are admitted with the life-span that prolongs battery module.
Summary of the invention
Technical problem to be solved by this invention provides a kind of series battery fast uniform method and circuit, can realize each battery unit in the series battery is carried out fast uniform by this Method and circuits, the voltage of each battery unit is reached unanimity, improve the serviceability of this battery pack, make the useful life of battery pack elongated.
For addressing the above problem, technical scheme of the present invention is:
The circulating fast uniform method of a kind of series battery, described equalization methods is a controller with circulate each battery unit in the conducting series battery one by one of period T, at every turn only and battery unit of conducting, battery unit is in parallel or be in series by one or more cells, and each battery unit attribute unanimity, the battery unit of conducting and shared energy storage device carry out energy exchange, make that the voltage trend of interior each battery unit of whole Battery pack is consistent.
Preferably, described battery unit attribute comprises battery base attribute and battery strings parallel-connection structure.The battery base attribute comprises battery types, battery nominal capacity, battery nominal voltage; The battery strings parallel-connection structure comprises battery quantity in parallel and battery series connection progression.
Preferably, described circulation one by one conducting and repeat aforesaid operations promptly successively to each battery unit conducting of series battery.
Preferably, described energy storage device is composed in series by storage capacitor and choke induction, or is made up of storage capacitor, or is made up of energy-storage battery.
Preferably, the break-make of described controller by the control electronic switch realizes being connected between shared energy storage device and the battery unit.
The circulating fast uniform circuit of a kind of series battery, be used to realize the circulating fast uniform of series battery, comprise controller and the executive circuit that links to each other with controller, described executive circuit is made up of some electronic switches and shared energy storage device, electronic switch links to each other with controller, and the positive pole of each battery unit and negative pole are connected the two ends of shared energy storage device respectively in the described series battery by electronic switch.
Preferably, described energy storage device is composed in series by storage capacitor and choke induction, or is made up of storage capacitor, or is made up of energy-storage battery.
Circulating fast uniform method of series battery provided by the invention and circuit, can realize each battery unit in the series battery is carried out fast uniform, the voltage of each battery unit is reached unanimity, improved the serviceability of this battery pack, make its life-span elongated, this Method and circuits has fast effectively, characteristics cheaply.
Description of drawings
Fig. 1 is a circuit connection diagram of the present invention.
Fig. 2 is the switch on and off control chart of the present invention in a period of time.
Embodiment
Further describe the present invention below in conjunction with drawings and Examples, but protection scope of the present invention is not limited to this.
With reference to Fig. 1, Fig. 2, the circulating fast uniform circuit of series battery of the present invention comprises controller and the executive circuit that links to each other with controller.Executive circuit is made up of some electronic switches and shared energy storage device, and electronic switch links to each other with controller.Executive circuit receives the control signal and the closed or disconnection electronic switch of controller.Described shared energy storage device is in series by storage capacitor C and choke induction L, and battery unit is an example with a cell, and the N batteries is arranged in the described series battery, and this sentences N=3 is example;
The positive pole of the 1st batteries CELL1 links to each other with choke induction L by electronic switch K1, the negative pole of CELL1 links to each other with storage capacitor C by electronic switch K1 ', the positive pole of the 2nd batteries CELL2 links to each other with choke induction L by electronic switch K2, the negative pole of CELL2 links to each other with storage capacitor C by electronic switch K2 ', the positive pole of the 3rd batteries CELL3 links to each other with choke induction L by electronic switch K3, the negative pole of CELL3 links to each other with storage capacitor C by electronic switch K3 ', and each electronic switch links to each other with controller respectively.
Based on the above-mentioned a kind of circuit that is used to realize the circulating fast uniform of series battery, the circulating fast uniform method of series battery of the present invention, controller is with circulate each cell in the conducting series battery one by one of period T, at every turn only and battery unit of conducting, the cell of conducting and shared energy storage device carry out energy exchange.Described cycle period T refer to all each cells successively conducting finish, and ON time unanimity, ON time is 50 μ s.Thereby controlling the closed or disconnection of each electronic switch, controller make shared energy storage device form series loop with each cell successively.Each cell is by carrying out energy exchange with shared energy storage device, and as if the magnitude of voltage of current battery voltage value less than current energy storage device, then energy flows to this battery from energy storage device; If current battery voltage value is greater than the magnitude of voltage of energy storage device, then energy flows to energy storage device from this battery; If identical with the magnitude of voltage of current energy storage device then do not have an energy exchange, make shared energy storage device consistent, thereby realize the balance of voltage between each cell with the average voltage of whole Battery pack.This method specifically is divided into following steps:
The 1st step was carried out equilibrium to the 1st batteries CELL1, other electronic switch disconnects, pair of electronic switches K1 and K1 ' on closed this batteries, by carrying out energy exchange with storage capacitor, if current battery voltage value is less than the magnitude of voltage of current storage capacitor, then energy flows to this battery from storage capacitor, if magnitude of voltage greater than current storage capacitor, then energy flows to storage capacitor from this battery, if identical with the magnitude of voltage of current storage capacitor then do not have an energy exchange, behind ON time 50 μ s, disconnect electronic switch K1 and K1 ';
The 2nd step was carried out equilibrium to the 2nd batteries CELL2, other electronic switch disconnects, pair of electronic switches K2 and K2 ' on closed this batteries, by carrying out energy exchange with storage capacitor, if current battery voltage value is less than the magnitude of voltage of current storage capacitor, then energy flows to this battery from storage capacitor, if magnitude of voltage greater than current storage capacitor, then energy flows to storage capacitor from this battery, if identical with the magnitude of voltage of current storage capacitor then do not have an energy exchange, behind ON time 50 μ s, disconnect electronic switch K2 and K2 ';
The 3rd step was carried out equilibrium to the 3rd batteries CELL3, other electronic switch disconnects, pair of electronic switches K3 and K3 ' on closed this batteries, by carrying out energy exchange with storage capacitor, if current battery voltage value is less than the magnitude of voltage of current storage capacitor, then energy flows to this battery from storage capacitor, if magnitude of voltage greater than current storage capacitor, then energy flows to storage capacitor from this battery, if identical with the magnitude of voltage of current storage capacitor then do not have an energy exchange, behind ON time 50 μ s, disconnect electronic switch K3 and K3 ';
After being balanced to last cell, controller control saves balanced one by one and the above-mentioned steps that circulates since the 1st again.
The method is opened under other state under charged state and is closed.
Claims (7)
1. circulating fast uniform method of series battery, it is characterized in that, described equalization methods is a controller with circulate each battery unit in the conducting series battery one by one of period T, at every turn only and battery unit of conducting, battery unit is in parallel or be in series by one or more cells, and each battery unit attribute unanimity, the battery unit of conducting and shared energy storage device carry out energy exchange, make that the voltage trend of interior each battery unit of whole Battery pack is consistent.
2. the circulating fast uniform method of a kind of series battery according to claim 1 is characterized in that described battery unit attribute comprises battery base attribute and battery strings parallel-connection structure.
3. the circulating fast uniform method of a kind of series battery according to claim 1 is characterized in that, described circulation conducting one by one and repeats aforesaid operations promptly successively to each battery unit conducting of series battery.
4. the circulating fast uniform method of a kind of series battery according to claim 1 is characterized in that described energy storage device is composed in series by storage capacitor and choke induction, or is made up of storage capacitor, or is made up of energy-storage battery.
5. the circulating fast uniform method of a kind of series battery according to claim 1 is characterized in that, the break-make of described controller by the control electronic switch realizes being connected between shared energy storage device and the battery unit.
6. circulating fast uniform circuit of series battery, be used to realize the circulating fast uniform of series battery, comprise controller and the executive circuit that links to each other with controller, it is characterized in that, described executive circuit is made up of some electronic switches and shared energy storage device, electronic switch links to each other with controller, and the positive pole of each battery unit and negative pole are connected the two ends of shared energy storage device respectively in the described series battery by electronic switch.
7. the circulating fast uniform circuit of a kind of series battery according to claim 6 is characterized in that described energy storage device is composed in series by storage capacitor and choke induction, or is made up of storage capacitor, or is made up of energy-storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011100523138A CN102148411A (en) | 2011-03-04 | 2011-03-04 | Circulating fast equalization method and circuit for serial battery pack |
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| CN2011100523138A CN102148411A (en) | 2011-03-04 | 2011-03-04 | Circulating fast equalization method and circuit for serial battery pack |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305971A (en) * | 2016-04-21 | 2017-10-31 | 凌力尔特有限公司 | Switchable inductor uses the energy storage device heap under background to balance |
| CN107979303A (en) * | 2016-10-23 | 2018-05-01 | 罗正兰 | AC-DC invertible matrix circuits |
| CN112350407A (en) * | 2020-11-08 | 2021-02-09 | 马东林 | Voltage-sharing circuit of battery pack and control method thereof |
| CN114336863A (en) * | 2021-12-31 | 2022-04-12 | 傲普(上海)新能源有限公司 | Single capacitance and inductance solution circuit for short-plate battery of battery module |
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| US6538413B1 (en) * | 1995-09-07 | 2003-03-25 | Intermec Ip Corp. | Battery pack with capacity and pre-removal indicators |
| CN101277022A (en) * | 2007-03-28 | 2008-10-01 | 深圳市比克电池有限公司 | Charging equalization circuit and charging device |
| CN201204476Y (en) * | 2008-05-12 | 2009-03-04 | 李康明 | Voltage equalization circuit for multiple series-connected batteries |
| CN101414759A (en) * | 2007-10-15 | 2009-04-22 | 凹凸电子（武汉）有限公司 | Cell balancing circuit and method for balancing battery |
| CN101609994A (en) * | 2008-06-17 | 2009-12-23 | 比亚迪股份有限公司 | Balanced charging device and balanced charging method |
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2011
- 2011-03-04 CN CN2011100523138A patent/CN102148411A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6538413B1 (en) * | 1995-09-07 | 2003-03-25 | Intermec Ip Corp. | Battery pack with capacity and pre-removal indicators |
| CN101277022A (en) * | 2007-03-28 | 2008-10-01 | 深圳市比克电池有限公司 | Charging equalization circuit and charging device |
| CN101414759A (en) * | 2007-10-15 | 2009-04-22 | 凹凸电子（武汉）有限公司 | Cell balancing circuit and method for balancing battery |
| CN201204476Y (en) * | 2008-05-12 | 2009-03-04 | 李康明 | Voltage equalization circuit for multiple series-connected batteries |
| CN101609994A (en) * | 2008-06-17 | 2009-12-23 | 比亚迪股份有限公司 | Balanced charging device and balanced charging method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305971A (en) * | 2016-04-21 | 2017-10-31 | 凌力尔特有限公司 | Switchable inductor uses the energy storage device heap under background to balance |
| CN107979303A (en) * | 2016-10-23 | 2018-05-01 | 罗正兰 | AC-DC invertible matrix circuits |
| CN107979303B (en) * | 2016-10-23 | 2021-04-09 | 北京华隆浩宏机电工程有限公司 | AC-DC reversible matrix circuit |
| CN112350407A (en) * | 2020-11-08 | 2021-02-09 | 马东林 | Voltage-sharing circuit of battery pack and control method thereof |
| CN114336863A (en) * | 2021-12-31 | 2022-04-12 | 傲普(上海)新能源有限公司 | Single capacitance and inductance solution circuit for short-plate battery of battery module |
| CN114336863B (en) * | 2021-12-31 | 2023-10-24 | 傲普(上海)新能源有限公司 | Capacitive inductance solving circuit of battery module short-plate battery monomer |
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Application publication date: 20110810 |