CN104577227B - A kind of battery equalizing circuit and control system - Google Patents
A kind of battery equalizing circuit and control system Download PDFInfo
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- CN104577227B CN104577227B CN201410808906.6A CN201410808906A CN104577227B CN 104577227 B CN104577227 B CN 104577227B CN 201410808906 A CN201410808906 A CN 201410808906A CN 104577227 B CN104577227 B CN 104577227B
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- switch
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- equalizing circuit
- converter
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- 238000000034 method Methods 0.000 claims abstract description 12
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- H01M10/44—Methods for charging or discharging
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of battery equalizing circuit and battery balanced control system.Described equalizing circuit is made up of battery, external dc power, DC DC changer, first switch, second switch and some branch switch.Described first switch and described some branch switch are used for controlling the equilibrium of cell.Described second switch is used for controlling the equilibrium of the set of cells being made up of some cells.Described control system includes signal acquisition module, processor CPU, isolation circuit, switch control module.The present invention compensates current methods using branch and can individually be mended electrical equalization to cell or set of cells, can also cell and set of cells be carried out mending electrical equalization simultaneously, so that each battery capacity is consistent, solve the short -board effect of battery strings, improve battery.The present invention controls simply, and cost is relatively low, small volume.
Description
Technical field
The present invention relates to a kind of battery equalizing circuit and control system.
Background technology
One set of cells is generally composed in series by several cells, and a battery system is generally by several set of cells
Constitute.Because each battery has differences during production and use, can cause the unbalanced of cell and set of cells it
Between unbalanced.This unbalanced some cells can be led to overcharge or cross put, thus shortening battery, also accelerate
The damage of whole set of cells.It is broadly divided into following two big class methods on solving battery balanced problem at present：
（1）Conductive discharge formula passively equalizes.The equalization methods that this balanced way is the simplest, cost is minimum.One is opened
It is connected in parallel on every batteries two ends, when needing equilibrium, by the switch connection on battery high for capacity, that is, to this behind pass and resistant series
Battery is discharged.Bled off with purely heating form due to electricity more than needed is passed through resistance, therefore in a balanced way electric current can only very little,
And cause the energy content of battery to waste.
（2）The conversion equilibrium of odd even inductance method electric charge.The method can realize the equilibrium in the case of high-end, two kinds of low side, but
Control circuit is more complicated, and electric charge can only transmit between adjacent battery one by one, and transmittance process energy loss is larger.
Content of the invention
First purpose of the present invention is the defect existing for the battery equalizing circuit described in background technology, proposes a kind of
Battery equalizing circuit.For this reason, the present invention employs the following technical solutions：
A kind of battery equalizing circuit it is characterised in that：Set of cells that described equalizing circuit is composed in series by multiple batteries, outer
Portion's DC source, DC-DC converter, first switch, second switch and some branch switch composition；Described first switch is linkage
Switch；Described external dc power is connected with described DC-DC converter；Described DC-DC converter by described first switch and
Branch switch is connected with battery and is formed the equalizaing charge loop being directed to individual cells；Described DC-DC converter passes through described second
Switch is connected with described set of cells and is formed the equalizaing charge loop being directed to set of cells；Described first switch and described some branch roads are opened
Close the equilibrium for controlling cell；Described second switch is used for controlling the equilibrium of set of cells.
On the basis of using technique scheme, the present invention also can be using technical scheme further below：
The high voltage of described DC-DC converter output current limiting and the low-voltage of current limliting.
The current limliting low-voltage output end of described DC-DC converter is connected with described first switch.
The current limliting high-voltage output terminal of described DC-DC converter is connected with described second switch.
Another object of the present invention is the defect existing for the battery equalizing circuit described in background technology, proposes a kind of electricity
Pond balance control system.For this reason, the present invention employs the following technical solutions：
A kind of battery balanced control system it is characterised in that：It is provided with a plurality of described battery equalizing circuits, each electricity
Pond equalizing circuit is configured with signal acquisition module, processor CPU, isolation circuit, switch control module；Battery in each set of cells
Battery signal collection realized by signal acquisition module, the process of described battery signal is realized by CPU, battery equalizing circuit
The control of interior described first switch, described second switch and branch switch is realized by switch control module, in described signal
It is connected with isolation circuit between acquisition module and described switch control module, between CPU, carry out data communication.
Compared with background technology, the invention has the advantages that：
The present invention can individually be mended electrical equalization to cell or set of cells using branch offset voltage method, also may be used
To carry out mending electrical equalization to cell and set of cells simultaneously, so that battery capacity is consistent, solve the short -board effect of battery strings,
Improve integral battery door service life.The present invention controls simply, and cost is relatively low, small volume.
Brief description
Fig. 1 is the circuit diagram of the battery equalizing circuit to a set of cells of the present invention.
Fig. 2 is the control structure schematic diagram of the present invention.
Fig. 3 controls signal Fig. 1 of battery equalizing circuit working condition for the present invention.
Fig. 4 controls signal Fig. 2 of battery equalizing circuit working condition for the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
With reference to Fig. 1.The equalizing circuit of the present embodiment include external dc power, DC-DC converter, first switch K1,
Two switch K2, branch switch S1, S2, S3, S4, S5, S6 and S7, battery B1, B2, B3, B4, B5 and B6.Wherein, battery B1, B2,
B3, B4, B5 and B6 form a set of cells.External dc power is connected with DC-DC converter.The 1 of DC-DC converter, 2 outputs
Hold the low-voltage output end for current limliting, be connected with first switch K1.First switch K1, branch switch S1, S2 and battery B1 series connection；
First switch K1, branch switch S2, S3 and battery B2 series connection；First switch K1, branch switch S3, S4 and battery B3 series connection；The
One switch K1, branch switch S4, S5 and battery B4 series connection；First switch K1, branch switch S5, S6 and battery B5 series connection；First
Switch K1, branch switch S6, S7 and battery B6 series connection.The 3 of DC-DC converter, 4 outfans are the high-voltage output terminal of current limliting,
It is connected with second switch K2.Second switch K2 is connected with set of cells.
Refer again to Fig. 2.The equalizing circuit control method of the present embodiment includes the collection to cell signal and process, right
The control of first switch, second switch and branch switch.Signal acquisition module is responsible for gathering the voltage of cell, temperature and interior
Resistance information, communicate information to CPU1 ... CPUn, CPU are processor, and 1 ... n represents different set of cells, n be more than etc.
In 2 natural number, each CPU is responsible for a set of cells, can mutually communicate between CPU.CPU1 ... CPUn receives
Through processing and judging battery or set of cells the need of equilibrium after information.If necessary to equalize, then CPU1, CPU2 ...
Send control signal to switch control module, first switch, second switch and branch switch are controlled by switch control module
Break-make.It is connected with isolation circuit between signal acquisition module and switch control module, by external dc power and battery isolation.
The operation principle of control structure shown in Fig. 2 described further below, with reference to Fig. 3,4：
When the CPU of the set of cells being responsible for including battery B2 judges that the capacity of battery B2 is less than other battery,
Then battery B2 is equalized.Switch control module controls first switch K1 and branch switch S2 and S3 closure, external dc electricity
Source, DC-DC converter and battery B2 form loop, start battery B2 to be carried out mend electrical equalization.After equilibrium terminates, first switch K1
Disconnect with branch switch S2 and S3.
Between each set of cells, after information exchange, the CPU1 being responsible for set of cells BC1 judges electricity to each CPU
When the capacity of pond group BC1 is less than set of cells BC2, then set of cells BC1 is equalized.Switch control module controls second switch K2
Closure, external dc power, DC-DC converter and set of cells BC1 form loop, start set of cells BC1 to be carried out mend electrical equalization.
After equilibrium terminates, second switch K2 disconnects.
When set of cells is carried out mend with electrical equalization, if CPU judges that the capacity having cell is less than other battery,
Switch control module can control first switch K1 and corresponding branch switch closure, cell is equalized simultaneously.
Claims (5)
1. a kind of battery equalizing circuit it is characterised in that：Set of cells that described equalizing circuit is composed in series by multiple batteries, outside
DC source, DC-DC converter, first switch, second switch and some branch switch composition；Described first switch is opened for linkage
Close；Described external dc power is connected with described DC-DC converter；Described DC-DC converter by described first switch and is propped up
Way switch is connected with battery and is formed the equalizaing charge loop being directed to individual cells；Described DC-DC converter is opened by described second
Closing is connected with described set of cells forms the equalizaing charge loop being directed to set of cells；Described first switch and described some branch switch
For controlling the equilibrium of cell；Described second switch is used for controlling the equilibrium of set of cells.
2. a kind of battery equalizing circuit according to claim 1 it is characterised in that：Described DC-DC converter output current limiting
High voltage and current limliting low-voltage.
3. a kind of battery equalizing circuit according to claim 2 it is characterised in that：The current limliting of described DC-DC converter is low
Voltage output end is connected with described first switch.
4. a kind of battery equalizing circuit according to claim 2 it is characterised in that：The current limliting of described DC-DC converter is high
Voltage output end is connected with described second switch.
5. a kind of battery balanced control system it is characterised in that：It is provided with the battery described in a plurality of claim 1,2,3 or 4
Equalizing circuit, each battery equalizing circuit is configured with signal acquisition module, processor CPU, isolation circuit, switch control module；
In each set of cells, the battery signal collection of battery is realized by signal acquisition module, and CPU is passed through in the process of described battery signal
Realize, on-off control mould is passed through in the control of described first switch, described second switch and branch switch in battery equalizing circuit
Block is realized, and is connected with isolation circuit, carries out data between CPU between described signal acquisition module and described switch control module
Communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410808906.6A CN104577227B (en) | 2014-12-23 | 2014-12-23 | A kind of battery equalizing circuit and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410808906.6A CN104577227B (en) | 2014-12-23 | 2014-12-23 | A kind of battery equalizing circuit and control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104577227A CN104577227A (en) | 2015-04-29 |
| CN104577227B true CN104577227B (en) | 2017-03-01 |
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| CN201410808906.6A Active CN104577227B (en) | 2014-12-23 | 2014-12-23 | A kind of battery equalizing circuit and control system |
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Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130050A (en) * | 2016-06-28 | 2016-11-16 | 深圳智慧能源技术开发有限公司 | The energy storage of wind-power electricity generation controls equipment, wind power system and control method thereof |
| CN105958618A (en) * | 2016-06-28 | 2016-09-21 | 深圳智慧能源技术开发有限公司 | Energy storing-measuring-controlling equipment for wind power generation, wind power system and control method of energy storing-measuring-controlling equipment |
| CN106026342A (en) * | 2016-06-28 | 2016-10-12 | 深圳智慧能源技术开发有限公司 | Photovoltaic system with energy storage measurement and control equipment, and control method thereof |
| CN106130155A (en) * | 2016-06-28 | 2016-11-16 | 深圳智慧能源技术开发有限公司 | Control equipment, photovoltaic system and the control method thereof of photovoltaic system |
| CN106130063A (en) * | 2016-06-28 | 2016-11-16 | 深圳智慧能源技术开发有限公司 | Control equipment, energy-storage system and the control method thereof of a kind of wind-powered electricity generation energy storage |
| CN105914858A (en) * | 2016-06-28 | 2016-08-31 | 深圳智慧能源技术开发有限公司 | Measurement and control equipment for wind power storage, energy storage system and control method of measurement and control equipment |
| CN105896719A (en) * | 2016-06-28 | 2016-08-24 | 深圳智慧能源技术开发有限公司 | Charging measuring and control equipment for photovoltaic energy storage, energy storage system and control method thereof |
| CN105932759A (en) * | 2016-06-28 | 2016-09-07 | 深圳智慧能源技术开发有限公司 | Wind power generation system with energy-storage and measurement-control equipment and control method therefor |
| CN105896718A (en) * | 2016-06-28 | 2016-08-24 | 深圳美能动力科技有限公司 | Photovoltaic system with energy storage control equipment and control method thereof |
| CN106130154A (en) * | 2016-06-28 | 2016-11-16 | 深圳智慧能源技术开发有限公司 | The photovoltaic energy storage system of a kind of band charging measuring and controlling equipment and control method thereof |
| CN105896717A (en) * | 2016-06-28 | 2016-08-24 | 深圳智慧能源技术开发有限公司 | Energy storage system, charge control device for photovoltaic energy storage, and control method of charge control device |
| CN105896703A (en) * | 2016-06-28 | 2016-08-24 | 深圳智慧能源技术开发有限公司 | Wind power energy storage system with energy storage control equipment and control method thereof |
| CN105932764A (en) * | 2016-06-28 | 2016-09-07 | 深圳智慧能源技术开发有限公司 | Photovoltaic energy storage system with charging control equipment and control method of photovoltaic energy storage system |
| CN105896609A (en) * | 2016-06-28 | 2016-08-24 | 深圳智慧能源技术开发有限公司 | Wind power generation system with energy storage control equipment and control method thereof |
| CN105932760A (en) * | 2016-06-28 | 2016-09-07 | 深圳智慧能源技术开发有限公司 | Wind power energy storage system with measurement-control equipment and control method therefor |
| CN106602634A (en) * | 2016-09-28 | 2017-04-26 | 哈尔滨理工大学 | Battery pack auxiliary charging and discharging method |
| CN108539813A (en) * | 2018-04-17 | 2018-09-14 | 上海理工大学 | A kind of lithium-ion-power cell active equalization method |
| CN109687548B (en) * | 2018-12-28 | 2022-11-04 | 中国船舶重工集团公司第七一九研究所 | Supplementary electric formula of storage battery initiative balancing unit |
| CN111435792A (en) * | 2019-01-11 | 2020-07-21 | 协同能源科技股份有限公司 | A battery power balance compensation system |
| CN111478389A (en) * | 2020-04-16 | 2020-07-31 | 西安新衡科测控技术有限责任公司 | Charging energy storage system and charging pile equipment |
| CN119253807A (en) * | 2024-11-22 | 2025-01-03 | 惠州市乐亿通科技股份有限公司 | Battery pack balancing system and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101141070A (en) * | 2006-09-06 | 2008-03-12 | 迈为电子技术（上海）有限公司 | Novel intelligent electric machine battery control system |
| CN101325271B (en) * | 2008-07-30 | 2010-08-11 | 赵建和 | Device for managing equalization of series battery |
| CN101562345B (en) * | 2008-12-30 | 2011-06-08 | 天津南大强芯半导体芯片设计有限公司 | Voltage equalization switch drive circuit |
| CN101599652A (en) * | 2009-04-08 | 2009-12-09 | 浙江绿源电动车有限公司 | The balanced charging method of batteries |
| JP5484985B2 (en) * | 2010-03-29 | 2014-05-07 | 三洋電機株式会社 | Power supply device and vehicle equipped with this power supply device |
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2014
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