CN105375561A - Lithium battery active equalizing device - Google Patents
Lithium battery active equalizing device Download PDFInfo
- Publication number
- CN105375561A CN105375561A CN201510722482.6A CN201510722482A CN105375561A CN 105375561 A CN105375561 A CN 105375561A CN 201510722482 A CN201510722482 A CN 201510722482A CN 105375561 A CN105375561 A CN 105375561A
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- active equalization
- module
- battery
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
-
- 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 discloses a lithium battery active equalizing device, and relates to the technical field of lithium batteries. The device comprises a series lithium battery pack, a battery voltage collection module, a DC/DC converter, an active equalizing module, a passive equalizing module, and a control circuit. The device achieves the voltage equalizing of the battery pack in a combination mode of active equalizing and passive equalizing, thereby achieving the optimization of equalizing efficiency, reducing the equalizing time, prolonging the service life of the battery, and guaranteeing the charging safety.
Description
Technical field
The present invention relates to technical field of lithium batteries, be specifically related to a kind of lithium battery active equalization device.
Background technology
Along with the development of society, electric automobile enters in the daily life of the common people, and therefore lithium battery is also greatly developed.Lithium battery is as the power source of electric automobile, carrying out Balance route management to extend its useful life to the charging of battery is the current required problem solved, balancing energy at present for dynamic lithium battery used for electric vehicle has two class methods: active equalization and passive equilibrium, wherein main application at present is passive equilibrium, because passive equilibrium has following advantage: cost is lower, principle is simple, realize easily, relatively reliable, stable, but the heat that passive equilibrium produces in balancing procedure is more, especially in airtight power brick, heat not easily leaves, larger on battery performance impact, active equalization its have following advantage: one is can the energy trasfer of monomer higher for energy to the lower monomer of energy, and energy loss is less in process, therefore the heat production of which is also less, also course continuation mileage can be increased, but also there is following shortcoming: one is that implementation is complicated simultaneously, cost is higher, two is current active equalizations is that electric capacity, the energy storage devices such as inductance, such device has certain danger, and weak domination is improper, and can shine into the short circuit of battery, consequence is hardly imaginable by DC/DC (realizing after transformer transformation).
Summary of the invention
For the deficiency that prior art exists, the present invention seeks to be to provide a kind of lithium battery active equalization device, the mode adopting active equalization and passive equilibrium to combine carries out electric voltage equalization process to battery pack, achieve the optimization of equalization efficiency like this, not only reduce time for balance, and can effectively extend the life of a cell, ensure charging safety.
To achieve these goals, the present invention realizes by the following technical solutions: comprise serial lithium battery group, battery voltage acquisition module, DC/DC transducer, active equalization module, passive balance module and control circuit, described battery voltage acquisition module two ends connect serial lithium battery group two ends respectively, described DC/DC transducer one end connects serial lithium battery group output, the other end connects passive balance module input and active equalization module input respectively, described passive balance module output and the equal connection control circuit of active equalization module input, described passive balance module is specially a kind of shunt compensation device, comprise compensating resistance and building-out capacitor, described active equalization module is specially a kind of redundance type balancer, comprise overcurrent protection resistance and redundancy battery, described control circuit output connects serial lithium battery group.
As preferably, described serial lithium battery group specifically has 4 joint single lithium battery to be composed in series, the assembled battery total voltage information of described battery voltage acquisition module acquires serial lithium battery group and each monomer battery voltage information.
As preferably, described control circuit output connects battery voltage acquisition module simultaneously, by gathering information of voltage and control passive balance module and active equalization module carrying out equilibrium to each cell of serial lithium battery group.
As preferably, described control circuit comprises switching circuit and inverter, and described inverter input connects passive balance module output and active equalization module input.
As preferably, described inverter is 74HC04 inverter.
As preferably, described DC/DC transducer is 12 volts and turns 5 volts of isolation DC/DC transducers.
Beneficial effect of the present invention: the mode that 1, the present invention adopts active equalization and passive equilibrium to combine carries out electric voltage equalization process to battery pack, achieve the optimization of equalization efficiency like this, not only reduce time for balance, and can effectively extend the life of a cell, ensure charging safety;
2, the active equalization module in the present invention, the redundancy battery adopted can bear the discharge and recharge load of a certain major loop battery, to extend the discharge and recharge time, efficient balance battery pack current and voltage.
Accompanying drawing explanation
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is theory diagram of the present invention.
Fig. 2 is the theory diagram of passive balance module of the present invention.
Fig. 3 is the theory diagram of active equalization module of the present invention.
Fig. 4 is the theory diagram of control circuit of the present invention.
Embodiment
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.
Shown in figure, 1-building-out capacitor, 2-compensating resistance, 3-overcurrent protection resistance, 4-redundancy battery, 5-inverter, 6-switching circuit.
According to Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, this embodiment is by the following technical solutions: a kind of lithium battery active equalization device, comprise serial lithium battery group, battery voltage acquisition module, DC/DC transducer, active equalization module, passive balance module and control circuit, described battery voltage acquisition module two ends connect serial lithium battery group two ends respectively, described DC/DC transducer one end connects serial lithium battery group output, the other end connects passive balance module input and active equalization module input respectively, described passive balance module output and the equal connection control circuit of active equalization module input, described passive balance module is specially a kind of shunt compensation device, comprise compensating resistance and building-out capacitor, described active equalization module is specially a kind of redundance type balancer, comprise overcurrent protection resistance and redundancy battery, described control circuit output connects serial lithium battery group.
It should be noted that, described serial lithium battery group specifically has 4 joint single lithium battery to be composed in series, the assembled battery total voltage information of described battery voltage acquisition module acquires serial lithium battery group and each monomer battery voltage information, described control circuit output connects battery voltage acquisition module simultaneously, controls passive balance module and active equalization module carries out equilibrium to each cell of serial lithium battery group by gathering information of voltage.
It should be noted that, described control circuit comprises switching circuit and inverter, described inverter input connects passive balance module output and active equalization module input, and described inverter is 74HC04 inverter, and described DC/DC transducer is 12 volts and turns 5 volts of isolation DC/DC transducers.
This embodiment is by the voltage of each battery of battery voltage acquisition module Real-time Collection serial lithium battery group, feed back to control circuit, control circuit controls active equalization module and passive balance module carries out equilibrium to cell voltage and electric current, the battery higher or lower to voltage first carries out passive equilibrium, carry out active equalization again, passive balance module provides parallel-current branch road for cell, the cell of overtension is consumed electric energy by shunting and reaches balanced object, active equalization module is when battery charges, the charging load of a certain major loop battery optionally born by redundancy battery, reduce its charging current, extend it and be filled the required time, during battery discharge, the electric discharge load of a certain major loop battery optionally born by redundancy battery, reduce its discharging current, extend it to be given out light the required time.
The mode that this embodiment adopts active equalization and passive equilibrium to combine carries out electric voltage equalization process to battery pack, the redundancy battery that wherein active equalization module adopts can bear the discharge and recharge load of a certain major loop battery, to extend the discharge and recharge time, efficient balance battery pack current and voltage, achieve the optimization of equalization efficiency like this, not only reduce time for balance, and can effectively extend the life of a cell, ensure charging safety.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (6)
1. a lithium battery active equalization device, it is characterized in that: comprise serial lithium battery group, battery voltage acquisition module, DC/DC transducer, active equalization module, passive balance module and control circuit, described battery voltage acquisition module two ends connect serial lithium battery group two ends respectively, described DC/DC transducer one end connects serial lithium battery group output, the other end connects passive balance module input and active equalization module input respectively, described passive balance module output and the equal connection control circuit of active equalization module input, described passive balance module is specially a kind of shunt compensation device, comprise compensating resistance and building-out capacitor, described active equalization module is specially a kind of redundance type balancer, comprise overcurrent protection resistance and redundancy battery, described control circuit output connects serial lithium battery group.
2. a kind of lithium battery active equalization device according to claim 1, it is characterized in that, described serial lithium battery group specifically has 4 joint single lithium battery to be composed in series, the assembled battery total voltage information of described battery voltage acquisition module acquires serial lithium battery group and each monomer battery voltage information.
3. a kind of lithium battery active equalization device according to claim 1, it is characterized in that, described control circuit output connects battery voltage acquisition module simultaneously, controls passive balance module and active equalization module carries out equilibrium to each cell of serial lithium battery group by gathering information of voltage.
4. a kind of lithium battery active equalization device according to claim 1, it is characterized in that, described control circuit comprises switching circuit and inverter, and described inverter input connects passive balance module output and active equalization module input.
5. a kind of lithium battery active equalization device according to claim 4, it is characterized in that, described inverter is 74HC04 inverter.
6. a kind of lithium battery active equalization device according to claim 1, is characterized in that, described DC/DC transducer is 12 volts and turns 5 volts of isolation DC/DC transducers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510722482.6A CN105375561A (en) | 2015-10-31 | 2015-10-31 | Lithium battery active equalizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510722482.6A CN105375561A (en) | 2015-10-31 | 2015-10-31 | Lithium battery active equalizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105375561A true CN105375561A (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510722482.6A Pending CN105375561A (en) | 2015-10-31 | 2015-10-31 | Lithium battery active equalizing device |
Country Status (1)
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| CN (1) | CN105375561A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108615954A (en) * | 2018-04-26 | 2018-10-02 | 常州信息职业技术学院 | A method of improving New-energy electric vehicle battery delivery efficiency |
| CN110021791A (en) * | 2019-03-21 | 2019-07-16 | 江苏工程职业技术学院 | A kind of lithium battery balance protection control method and control system |
| CN110601299A (en) * | 2019-09-23 | 2019-12-20 | 珠海格力电器股份有限公司 | Battery capable of switching equalization mode, active equalization module and battery equalization method |
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| CN202206158U (en) * | 2011-09-07 | 2012-04-25 | 张文亚 | Intelligent time-sharing hybrid equalization battery management system |
| CN102969755A (en) * | 2012-11-06 | 2013-03-13 | 中国科学院苏州纳米技术与纳米仿生研究所 | Circuit and system for intelligent management of battery pack |
| CN202840594U (en) * | 2012-09-04 | 2013-03-27 | 嘉兴敏凯汽车零部件有限公司 | Electric vehicle power lithium battery energy balancing system |
| CN103248090A (en) * | 2013-04-18 | 2013-08-14 | 湖南大学 | Novel integrated design for equalizing system of BEV (blade electric vehicle) |
| CN104795857A (en) * | 2015-03-23 | 2015-07-22 | 上海交通大学 | Lithium ion battery energy balance system and implementation method thereof |
-
2015
- 2015-10-31 CN CN201510722482.6A patent/CN105375561A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202206158U (en) * | 2011-09-07 | 2012-04-25 | 张文亚 | Intelligent time-sharing hybrid equalization battery management system |
| CN202840594U (en) * | 2012-09-04 | 2013-03-27 | 嘉兴敏凯汽车零部件有限公司 | Electric vehicle power lithium battery energy balancing system |
| CN102969755A (en) * | 2012-11-06 | 2013-03-13 | 中国科学院苏州纳米技术与纳米仿生研究所 | Circuit and system for intelligent management of battery pack |
| CN103248090A (en) * | 2013-04-18 | 2013-08-14 | 湖南大学 | Novel integrated design for equalizing system of BEV (blade electric vehicle) |
| CN104795857A (en) * | 2015-03-23 | 2015-07-22 | 上海交通大学 | Lithium ion battery energy balance system and implementation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108615954A (en) * | 2018-04-26 | 2018-10-02 | 常州信息职业技术学院 | A method of improving New-energy electric vehicle battery delivery efficiency |
| CN110021791A (en) * | 2019-03-21 | 2019-07-16 | 江苏工程职业技术学院 | A kind of lithium battery balance protection control method and control system |
| CN110601299A (en) * | 2019-09-23 | 2019-12-20 | 珠海格力电器股份有限公司 | Battery capable of switching equalization mode, active equalization module and battery equalization method |
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| PB01 | Publication | ||
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Application publication date: 20160302 |