CN104124480B - A kind of method and system of balance battery core voltage - Google Patents
A kind of method and system of balance battery core voltage Download PDFInfo
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- CN104124480B CN104124480B CN201410345054.1A CN201410345054A CN104124480B CN 104124480 B CN104124480 B CN 104124480B CN 201410345054 A CN201410345054 A CN 201410345054A CN 104124480 B CN104124480 B CN 104124480B
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- battery core
- voltage
- voltage difference
- abnormal
- threshold values
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000002159 abnormal effect Effects 0.000 claims abstract description 33
- 238000005516 engineering process Methods 0.000 claims abstract description 10
- 239000000725 suspension Substances 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 20
- 238000002955 isolation Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
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
- H01M10/4207—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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging 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
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
-
- 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)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The present invention is applied to field of batteries, there is provided a kind of method and system of balance battery core voltage, methods described include：The voltage of each battery core in battery is detected by suspension technology；Abnormal battery core of the neighboring voltage difference more than default voltage difference threshold values is obtained from described each battery core；Persistently lower powered balanced adjustment is carried out to the abnormal battery core.The embodiment of the present invention, predeterminated voltage difference limen value, when neighboring voltage difference is more than default voltage difference threshold values, battery core to occurring abnormal carries out persistently lower powered balanced adjustment, there is provided a kind of method of balance battery core voltage so that when the voltage difference of adjacent battery core exceedes threshold values, that is, be balanced adjustment, rather than be only just adjusted when battery core exceeds safety range, it is ensured that the service life of battery.
Description
Technical field
The invention belongs to field of batteries, more particularly to a kind of method and system of balance battery core voltage.
Background technology
Lithium cell needs series connection, the battery of a quality better then to require the ginseng between single battery core in cell process is combined into
Number is with good concordance, but preferably concordance is non-existent, during continuous charging and discharging, series connection
Battery core parameter can change (finally with change in voltage form embody), while battery enters vicious cycle (battery core in series connection group
High higher of voltage, low is lower), can so accelerate battery premature failure.
The method of prior art balance battery core voltage is being charged to peak phase and is being higher than default valve in single battery core
Make absorption adjustment (electric discharge) during value to battery core, due to their independence, what is can uniquely perceived is more than threshold voltage, when going out
Be adjusted when now surmounting threshold voltage, and during adjustment charger still continue charge, the adjustment process because when
Between short and high-power factor constrain the feasibility and reliability of balanced adjustment, for this feasibility of high power battery and can
It is even more important by property.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of method and system of balance battery core voltage, to solve prior art
The problem for only just adjusting when battery core exceeds safety range.
The embodiment of the present invention is achieved in that a kind of method of balance battery core voltage, the method comprising the steps of：
The voltage of each battery core in battery is detected by suspension technology；
Abnormal battery core of the neighboring voltage difference more than default voltage difference threshold values is obtained from described each battery core；
Persistently lower powered balanced adjustment is carried out to the abnormal battery core.
The another object of the embodiment of the present invention is to provide a kind of system of balance battery core voltage, and the system includes：
Detector unit, for the voltage of each battery core in battery is detected by suspension technology；
Abnormal battery core acquiring unit, is more than for neighboring voltage difference is obtained in each battery core for detecting from the detector unit
The abnormal battery core of default voltage difference threshold values；
Balanced adjustment unit, it is persistently lower powered for carrying out to the abnormal battery core that the abnormal battery core acquiring unit is obtained
Balanced adjustment.
The embodiment of the present invention, predeterminated voltage difference limen value, when neighboring voltage difference is more than default voltage difference threshold values, to occurring
Abnormal battery core carries out persistently lower powered balanced adjustment, there is provided a kind of method of balance battery core voltage so that adjacent battery core
Voltage difference when exceeding threshold values, that is, be balanced adjustment, rather than be only just adjusted when battery core exceeds safety range, guarantor
The service life of battery is demonstrate,proved.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to embodiment or description of the prior art
Needed for accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can be with according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the flow chart of balance battery core voltage method provided in an embodiment of the present invention；
Fig. 2 is the design sketch of balance battery core potential circuit provided in an embodiment of the present invention；
Fig. 3 is the structure chart of balance battery core electrical voltage system provided in an embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
In order to illustrate technical solutions according to the invention, illustrate below by specific embodiment.
Embodiment one
Be illustrated in figure 1 it is provided in an embodiment of the present invention balance battery core voltage method flow chart, methods described include with
Lower step：
In step S101, the voltage of each battery core in battery is detected by suspension technology.
In embodiments of the present invention, the voltage of each battery core in battery is examined by voltage isolation detection component
Survey.In detection process, voltage isolation detection component is individually connected to each battery core, can so detect each battery core
Voltage.In the detection battery by suspension technology the step of the voltage of each battery core, including：Set of cells is made by audion
In each battery core form single loop in detection, and the set of cells does not share ground wire with control system.In the step
Each battery core forms single loop in detection, i.e., single battery core is suspended state in detection so that every in set of cells
Individual battery core can be by independent detection voltage.
The design sketch of circuit is as shown in Figure 2.
In step s 102, exception of the acquisition neighboring voltage difference more than default voltage difference threshold values from described each battery core
Battery core.
In embodiments of the present invention, preset a voltage difference threshold values, by the voltage difference of each two adjacent battery core with it is default
Voltage difference contrasted, obtain more than default voltage difference battery core.The step passes through micro-control unit (Micro
Control Unit, referred to as：MCU) carry out.
In step s 103, persistently lower powered balanced adjustment is carried out to the abnormal battery core.
In embodiments of the present invention, it is detected as abnormal battery core and is balanced adjustment by specific light is symplectic, the adjustment
It is to continue and lower powered balanced adjustment, will not powerful adjustment suddenly.
The embodiment of the present invention, predeterminated voltage difference limen value, when neighboring voltage difference is more than default voltage difference threshold values, to occurring
Abnormal battery core carries out persistently lower powered balanced adjustment, there is provided a kind of method of balance battery core voltage so that adjacent battery core
Voltage difference when exceeding threshold values, that is, be balanced adjustment, rather than be only just adjusted when battery core exceeds safety range, guarantor
The service life of battery is demonstrate,proved.
As an alternative embodiment of the present invention, in the neighboring voltage difference that obtains from described each battery core more than pre-
If threshold values abnormal battery core the step of before, methods described also includes：
Predeterminated voltage difference limen value.
Embodiment two
The structure chart of balance battery core electrical voltage system provided in an embodiment of the present invention is illustrated in figure 3, for convenience of description, only
The part related to the embodiment of the present invention is shown, including：
Detector unit 301, for the voltage of each battery core in battery is detected by suspension technology.
In embodiments of the present invention, detector unit 301 passes through voltage isolation detection component to each battery core in battery
Voltage is detected.In detection process, voltage isolation detection component is individually connected to each battery core, can so be detected
Go out the voltage of each battery core.The step of detector unit 301 detects the voltage of each battery core, including：Electricity is made by audion
Each battery core of Chi Zuzhong forms single loop in detection, and the set of cells does not share ground wire with control system.The step
In rapid, each battery core forms single loop in detection, i.e., single battery core is suspended state in detection so that in set of cells
Each battery core can be by independent detection voltage.Abnormal battery core acquiring unit 302, for detecting from the detector unit 301
Each battery core in obtain neighboring voltage difference more than default voltage difference threshold values abnormal battery core.
In embodiments of the present invention, a voltage difference threshold values is preset, abnormal battery core acquiring unit 302 is adjacent by each two
The voltage difference of battery core is contrasted with default voltage difference, obtains the battery core more than default voltage difference.The step passes through
Micro-control unit (Micro Control Unit, referred to as：MCU) carry out.
Balanced adjustment unit 303 is persistently low for carrying out to the abnormal battery core that the abnormal battery core acquiring unit 302 is obtained
The balanced adjustment of power.
In embodiments of the present invention, balanced adjustment unit 303 is examined by the symplectic abnormal battery core acquiring unit of specific light 302
Survey and be balanced adjustment for abnormal battery core, the adjustment be persistently and lower powered balanced adjustment, will not powerful tune suddenly
It is whole.
The embodiment of the present invention, predeterminated voltage difference limen value, when neighboring voltage difference is more than default voltage difference threshold values, to occurring
Abnormal battery core carries out persistently lower powered balanced adjustment, there is provided a kind of method of balance battery core voltage so that adjacent battery core
Voltage difference when exceeding threshold values, that is, be balanced adjustment, rather than be only just adjusted when battery core exceeds safety range, guarantor
The service life of battery is demonstrate,proved.
As an alternative embodiment of the present invention, before the abnormal battery core acquiring unit 302 obtains abnormal battery core,
The system also includes：
Voltage difference threshold values presets unit 304, for predeterminated voltage difference limen value.
One of ordinary skill in the art will appreciate that the unit included by above-described embodiment two is according to function
What logic was divided, but above-mentioned division is not limited to, as long as corresponding function can be realized；In addition, each function
The specific name of unit is also only to facilitate mutually differentiation, is not limited to protection scope of the present invention.
Those of ordinary skill in the art are further appreciated that all or part of step realized in above-described embodiment method is can
Instruct related hardware to complete with by program, described program can be stored in a computer read/write memory medium
In, described storage medium, including ROM/RAM, disk, CD etc..
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (4)
1. it is a kind of balance battery core voltage method, it is characterised in that methods described includes：
Using voltage isolation detection component, the voltage of each battery core in battery is detected by suspension technology；
Abnormal battery core of the neighboring voltage difference more than default voltage difference threshold values is obtained from described each battery core；
Persistently lower powered balanced adjustment is carried out to the abnormal battery core；
In the detection battery by suspension technology the step of the voltage of each battery core, including：Made in set of cells by audion
Each battery core form single loop in detection, and the set of cells does not share ground wire with control system.
2. the method for claim 1, it is characterised in that neighboring voltage difference is obtained from described each battery core is big described
Before the step of the abnormal battery core of default threshold values, methods described also includes：
Predeterminated voltage difference limen value.
3. it is a kind of balance battery core voltage system, it is characterised in that the system includes：
Detector unit, is voltage isolation detection component, for the voltage of each battery core in battery is detected by suspension technology；
Abnormal battery core acquiring unit, for neighboring voltage difference is obtained in each battery core for detecting from the detector unit more than default
Voltage difference threshold values abnormal battery core；
Balanced adjustment unit, for carrying out persistently lower powered balance to the abnormal battery core that the abnormal battery core acquiring unit is obtained
Adjustment；
The step of detector unit detects the voltage of each battery core, including：Each battery core in set of cells is made by audion
Single loop is formed in detection, and the set of cells does not share ground wire with control system.
4. system as claimed in claim 3, it is characterised in that the abnormal battery core acquiring unit obtain abnormal battery core it
Before, the system also includes：
Voltage difference threshold values presets unit, for predeterminated voltage difference limen value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410345054.1A CN104124480B (en) | 2014-07-18 | 2014-07-18 | A kind of method and system of balance battery core voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410345054.1A CN104124480B (en) | 2014-07-18 | 2014-07-18 | A kind of method and system of balance battery core voltage |
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| Publication Number | Publication Date |
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| CN104124480A CN104124480A (en) | 2014-10-29 |
| CN104124480B true CN104124480B (en) | 2017-04-05 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113665426B (en) * | 2020-05-14 | 2023-08-04 | 北京新能源汽车股份有限公司 | Method, device and equipment for updating single cell voltage |
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| CN101103487A (en) * | 2005-01-14 | 2008-01-09 | 佩勒克股份有限公司 | Method for the balanced charging of a lithium-ion or lithium-polymer battery |
| CN101826737A (en) * | 2009-03-06 | 2010-09-08 | 登丰微电子股份有限公司 | Battery charging control device and battery balance charging controller |
| CN101976876A (en) * | 2010-11-18 | 2011-02-16 | 无锡东海新能源科技有限公司 | Device and method for equalizing batteries in charging process |
| CN102074748A (en) * | 2009-11-23 | 2011-05-25 | 登丰微电子股份有限公司 | Battery voltage balancing device and battery charging device |
| CN102148518A (en) * | 2011-03-18 | 2011-08-10 | 清华大学深圳研究生院 | Secondary battery pack charging and discharging dynamic feedback equalizing device and method |
| CN102866358A (en) * | 2012-08-03 | 2013-01-09 | 惠州市蓝微电子有限公司 | High-string-number lithium-battery pack voltage detection circuit and battery pack protection circuit utilizing same |
| CN103501033A (en) * | 2013-10-12 | 2014-01-08 | 武汉理工大学 | Battery balance control method and system based on largest average balance current |
-
2014
- 2014-07-18 CN CN201410345054.1A patent/CN104124480B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101103487A (en) * | 2005-01-14 | 2008-01-09 | 佩勒克股份有限公司 | Method for the balanced charging of a lithium-ion or lithium-polymer battery |
| CN101826737A (en) * | 2009-03-06 | 2010-09-08 | 登丰微电子股份有限公司 | Battery charging control device and battery balance charging controller |
| CN102074748A (en) * | 2009-11-23 | 2011-05-25 | 登丰微电子股份有限公司 | Battery voltage balancing device and battery charging device |
| CN101976876A (en) * | 2010-11-18 | 2011-02-16 | 无锡东海新能源科技有限公司 | Device and method for equalizing batteries in charging process |
| CN102148518A (en) * | 2011-03-18 | 2011-08-10 | 清华大学深圳研究生院 | Secondary battery pack charging and discharging dynamic feedback equalizing device and method |
| CN102866358A (en) * | 2012-08-03 | 2013-01-09 | 惠州市蓝微电子有限公司 | High-string-number lithium-battery pack voltage detection circuit and battery pack protection circuit utilizing same |
| CN103501033A (en) * | 2013-10-12 | 2014-01-08 | 武汉理工大学 | Battery balance control method and system based on largest average balance current |
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| CN104124480A (en) | 2014-10-29 |
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Effective date of registration: 20170424 Address after: Nanshan District Xili street of Shenzhen city Guangdong province 518000 Kan Yang Industrial District 51 building 7 floor Patentee after: Shenzhen lithium energy technology Co., Ltd. Address before: 518000 Futian District agricultural road, Guangdong, No. 59 2-1401 Patentee before: Liu Zhongyao |