CN104577227A - Battery equalization circuit and control system - Google Patents
Battery equalization circuit and control system Download PDFInfo
- Publication number
- CN104577227A CN104577227A CN201410808906.6A CN201410808906A CN104577227A CN 104577227 A CN104577227 A CN 104577227A CN 201410808906 A CN201410808906 A CN 201410808906A CN 104577227 A CN104577227 A CN 104577227A
- Authority
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- China
- Prior art keywords
- battery
- switch
- converter
- battery pack
- equalizing circuit
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- 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.)
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Classifications
-
- 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
Abstract
The invention discloses a battery equalization circuit and a battery equalization control system. The equalization circuit consists of a battery, an external direct current power supply, a DC-DC converter, a first switch, a second switch and multiple branch switches, wherein the first switch and the multiple branch switches are used for controlling equalization of battery cells; the second switch is used for controlling equalization of a battery pack consisting of multiple battery cells; the control system comprises a signal acquisition module, a processor CPU, an isolating circuit and a switching control module. With the adoption of a shunt compensation current method, the battery cells or battery pack can be subjected to independent power supply equalization, and the battery cells and battery pack can also be subjected to power supply equalization simultaneously, so that the capacity of each battery is kept consistent, the short-board effect of a battery string is avoided, and the service life of the battery is prolonged. The battery equalization circuit disclosed by the invention is simple to control, low in cost and small in size.
Description
Technical field
The present invention relates to a kind of battery equalizing circuit and control system.
Background technology
A battery pack is composed in series by several cells usually, and a battery system is made up of several battery pack usually.Because each battery there are differences in production and use procedure, that can cause between the unbalanced of cell and battery pack is unbalanced.This unbalanced meeting causes some cells to overcharge or crosses putting, thus shortens battery, also accelerates the damage of whole battery pack.Following two large class methods are mainly divided at present in the battery balanced problem of solution:
(1) the passive equilibrium of conductive discharge formula.This balanced way is the equalization methods the simplest, cost is minimum.Be connected in parallel on every batteries two ends by after a switch and resistant series, when needing balanced, by the switch connection on battery high for capacity, namely this battery discharged.Owing to being bled off with the form of generating heat purely by resistance by electricity more than needed, therefore balanced electric current can only be very little, and cause the energy content of battery to waste.
(2) odd even inductance method charge conversion is balanced.The method can realize the equilibrium in high-end, low side two kinds of situations, but control circuit more complicated, electric charge can only transmit one by one between adjacent battery, and transmittance process energy loss is larger.
Summary of the invention
First object of the present invention is the defect existed for the battery equalizing circuit described in background technology, proposes a kind of battery equalizing circuit.For this reason, the present invention is by the following technical solutions:
A kind of battery equalizing circuit, is characterized in that: the battery pack that described equalizing circuit is made up of multiple serial battery, external dc power, DC-DC converter, the first switch, second switch and some branch switchs form; Described first switch is linked switch; Described external dc power is connected with described DC-DC converter; Described DC-DC converter forms the equalizing charge loop for individual cells by described first switch and branch switch and serial battery; Described DC-DC converter to be connected with described battery pack the equalizing charge loop formed for battery pack by described second switch; Described first switch and described some branch switchs are for controlling the equilibrium of cell; Described second switch is for controlling the equilibrium of battery pack.
On the basis adopting technique scheme, the present invention also can adopt following further technical scheme:
The described high voltage of 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 existed for the battery equalizing circuit described in background technology, proposes a kind of battery balanced control system.For this reason, the present invention is by the following technical solutions:
A kind of battery balanced control system, is characterized in that: it is provided with a plurality of described battery equalizing circuit, and each battery equalizing circuit is configured with signal acquisition module, processor CPU, buffer circuit, switch control module; In each battery pack, the battery signal collection of battery is realized by signal acquisition module, the process of described battery signal is realized by CPU, the control of described first switch in battery equalizing circuit, described second switch and branch switch is realized by switch control module, between described signal acquisition module and described switch control module, be connected with buffer circuit, between CPU, carry out data communication.
Compared with background technology, the beneficial effect that the present invention has is:
The present invention adopts bucking voltage method along separate routes can mend electrical equalization separately to cell or battery pack, also can carry out benefit electrical equalization to cell and battery pack simultaneously, battery capacity is consistent, solves the short-board effect of battery strings, improve integral battery door useful life.The present invention controls simply, and cost is lower, small volume.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the battery equalizing circuit to a battery pack of the present invention.
Fig. 2 is control structure schematic diagram of the present invention.
Fig. 3 is the schematic diagram 1 that the present invention controls battery equalizing circuit operating state.
Fig. 4 is the schematic diagram 2 that the present invention controls battery equalizing circuit operating state.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
With reference to Fig. 1.The equalizing circuit of the present embodiment comprises external dc power, DC-DC converter, the first K switch 1, second 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 forms a battery pack.External dc power is connected with DC-DC converter.1,2 outputs of DC-DC converter are the low-voltage output end of current limliting, are connected with the first K switch 1.First K switch 1, branch switch S1, S2 and battery B1 connect; First K switch 1, branch switch S2, S3 and battery B2 connect; First K switch 1, branch switch S3, S4 and battery B3 connect; First K switch 1, branch switch S4, S5 and battery B4 connect; First K switch 1, branch switch S5, S6 and battery B5 connect; First K switch 1, branch switch S6, S7 and battery B6 connect.3,4 outputs of DC-DC converter are the high-voltage output terminal of current limliting, are connected with second switch K2.Second switch K2 connects with battery pack.
Refer again to Fig. 2.The equalizing circuit control method of the present embodiment comprises the sampling and processing to cell signal, to the control of the first switch, second switch and branch switch.Signal acquisition module is responsible for gathering the voltage of cell, temperature and internal resistance information, information is sent to CPU1 ... CPUn, CPU is processor, 1 ... n represents different battery pack, n be more than or equal to 2 natural number, each CPU is in charge of a battery pack, can communication mutually between CPU.CPU1 ... through processing and judging that battery or battery pack are the need of equilibrium after CPUn receives information.If need equilibrium, then CPU1, CPU2 ... transmit control signal to switch control module, controlled the break-make of the first switch, second switch and branch switch by switch control module.Buffer circuit is connected with, by external dc power and battery isolation between signal acquisition module and switch control module.
Below describe the operation principle of control structure shown in Fig. 2 in detail, with reference to Fig. 3,4:
When the CPU being in charge of the battery pack comprising battery B2 judges the capacity of battery B2 lower than other battery, then equilibrium is carried out to battery B2.Switch control module controls the first K switch 1 and branch switch S2 and S3 closes, and external dc power, DC-DC converter and battery B2 form loop, start to carry out benefit electrical equalization to battery B2.After equilibrium terminates, the first K switch 1 and branch switch S2 and S3 disconnect.
Between each battery pack, each CPU, after information exchange, when the CPU1 being in charge of battery pack BC1 judges the capacity of battery pack BC1 lower than battery pack BC2, then carries out equilibrium to battery pack BC1.Switch control module controls second switch K2 and closes, and external dc power, DC-DC converter and battery pack BC1 form loop, start to carry out benefit electrical equalization to battery pack BC1.After equilibrium terminates, second switch K2 disconnects.
When carrying out benefit electrical equalization to battery pack, if when CPU judges the capacity of cell lower than other battery, switch control module can control the first K switch 1 and corresponding branch switch closes, and carries out equilibrium to cell simultaneously.
Claims (5)
1. a battery equalizing circuit, is characterized in that: the battery pack that described equalizing circuit is made up of multiple serial battery, external dc power, DC-DC converter, the first switch, second switch and some branch switchs form; Described first switch is linked switch; Described external dc power is connected with described DC-DC converter; Described DC-DC converter forms the equalizing charge loop for individual cells by described first switch and branch switch and serial battery; Described DC-DC converter to be connected with described battery pack the equalizing charge loop formed for battery pack by described second switch; Described first switch and described some branch switchs are for controlling the equilibrium of cell; Described second switch is for controlling the equilibrium of battery pack.
2. a kind of battery equalizing circuit according to claim 1, is characterized in that: the described high voltage of DC-DC converter output current limiting and the low-voltage of current limliting.
3. a kind of battery equalizing circuit according to claim 2, is characterized in that: the current limliting low-voltage output end of described DC-DC converter is connected with described first switch.
4. a kind of battery equalizing circuit according to claim 2, is characterized in that: the current limliting high-voltage output terminal of described DC-DC converter is connected with described second switch.
5. a battery balanced control system, is characterized in that: it is provided with the battery equalizing circuit described in a plurality of claim 1,2,3 or 4, and each battery equalizing circuit is configured with signal acquisition module, processor CPU, buffer circuit, switch control module; In each battery pack, the battery signal collection of battery is realized by signal acquisition module, the process of described battery signal is realized by CPU, the control of described first switch in battery equalizing circuit, described second switch and branch switch is realized by switch control module, between described signal acquisition module and described switch control module, be connected with buffer circuit, between CPU, carry out data 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 |
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| Publication Number | Publication Date |
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| CN104577227A true CN104577227A (en) | 2015-04-29 |
| CN104577227B CN104577227B (en) | 2017-03-01 |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN109687548A (en) * | 2018-12-28 | 2019-04-26 | 中国船舶重工集团公司第七一九研究所 | A kind of battery group supplement electric-type active equalization device |
| CN111435792A (en) * | 2019-01-11 | 2020-07-21 | 协同能源科技股份有限公司 | Battery electric quantity 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 |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN109687548A (en) * | 2018-12-28 | 2019-04-26 | 中国船舶重工集团公司第七一九研究所 | A kind of battery group supplement electric-type active equalization device |
| 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 | Battery electric quantity 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 |
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| CN104577227B (en) | 2017-03-01 |
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