CN104882642B - It is advantageously implemented the vehicle lithium battery module of non-energy consumption formula electric quantity balancing - Google Patents
It is advantageously implemented the vehicle lithium battery module of non-energy consumption formula electric quantity balancing Download PDFInfo
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- CN104882642B CN104882642B CN201510264432.8A CN201510264432A CN104882642B CN 104882642 B CN104882642 B CN 104882642B CN 201510264432 A CN201510264432 A CN 201510264432A CN 104882642 B CN104882642 B CN 104882642B
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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
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
-
- 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
- H01M10/448—End of discharge regulating 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of vehicle lithium battery module for being advantageously implemented non-energy consumption formula electric quantity balancing, it includes the m battery blocks being sequentially connected in series, and each battery block saves cell comprising n；It is characterized in that：Being respectively equipped between adjacent cell block in a switch matrix, each switch matrix at least has n*n switch；Between adjacent cell block, the positive terminal of a section cell of previous battery block is connected by n switch with the negative terminal of the often section cell of latter battery block；Most only one of which switch conductions in synchronization, a switch matrix.Vehicle lithium battery module of the present invention is advantageously reduced due to the poor overcharge for causing each cell to be caused in discharge and recharge of lithium battery group uniformity or overdischarge problem, and the security and life-span for making the lithium battery module of large-scale integrated get a promotion.
Description
Technical field
The invention belongs to Vehicular battery field, more particularly to a kind of vehicle lithium for being advantageously implemented non-energy consumption formula electric quantity balancing
Battery module.
Background technology
With making rapid progress for social progress scientific and technical innovation, automobile has become irreplaceable one in people live
Part.It has not only promoted the progress of human culture, is also changing the life of people at leisure.However, the popularization of automobile causes
Environmental pollution is increasingly serious, and its Air Contamination is the most obvious.Recent years, the paces that automobile enters family are gradually accelerated, mesh
Preceding Chinese motor vehicles for civilian use recoverable amount, more than Germany, is only second to the U.S. more than 100,000,000.Meanwhile, Chinese population is numerous, each big city
City's density of population is very high, causes vehicle exhaust discharge quantity to be averagely higher than other countries.Going from bad to worse for air ambient makes owner
Worry, but also in the trend deteriorated year by year.In addition, with the increasing of automobile purchase amount, the motor vehicle fuel such as petroleum resources also face
Face the situation of increasingly depleted.China at this stage has been faced with the severe challenge of oil shortage, is badly in need of the new energy of research and development
Energy security is tackled in source.Electric automobile strategy has become the decision-making of the emerging strategic industry development of China.
At present in developing electric automobile industry, battery turns into a key of restriction auto cost and course continuation mileage
Sex chromosome mosaicism.World-renowned electric automobile manufacturer tesla takes the lead in using using extensive, quality 18650 lithium batteries work really up to the mark
For the power source of its electric automobile, extensive concern in the industry is caused.18650 lithium batteries have energy density high, technology maturation,
Low cost and other advantages.But for single cell body, its capacity only only has 2000mAh.Therefore need integrated substantial amounts of
18650 batteries could be met on automobile to battery request.In this large amount of integrating process, battery with two side terminals problem is particularly dashed forward
Go out, how to ensure the uniformity of battery capacity in whole system makes the life-span of whole battery system and safety obtain maximum and be ensured of
The popular problem of current research.
In a big lithium battery group, there are multiple lithium batteries in parallel and serial.Influence each monomer of Li-ion batteries piles
The factor of battery consistency, mainly voltage, internal resistance and capacity etc., wherein voltage are initial voltage of the battery in assembling, interior
Hinder for it is fully charged when AC internal Resistance, capacity is discharge capacity.If the uniformity of lithium battery group is poor, each battery core may result in
Real-time voltage distribution in discharge and recharge is uneven, causes overvoltage to charge or under-voltage electric discharge.The overvoltage charging of lithium ion battery is owed
Side reaction can be caused by pressing electricity, the use time of battery pack is substantially shortened, and trigger safety problem.And integrated level it is higher be
System, uniformity influence also can be bigger.Therefore when designing lithium battery group circuit, it is necessary to consider that the uniformity of cell is asked
Topic, prior art does not maximize the influence for solving uniformity.
The content of the invention
The present invention for each cell uniformity of existing vehicle lithium battery group it is poor, cause lithium battery group use time compared with
There is provided a kind of vehicle lithium battery module for being advantageously implemented non-energy consumption formula electric quantity balancing, protection for the problem of short and security is poor
Every piece of cell in battery pack, extends the life-span of whole battery pack.
The technical solution adopted for the present invention to solve the technical problems is：One kind is provided and is advantageously implemented non-energy consumption formula electricity
Vehicle lithium battery module in a balanced way, it includes the m battery blocks being sequentially connected in series, and each battery block saves cell comprising n；It is special
Levy and be：Being respectively equipped between adjacent cell block in a switch matrix, each switch matrix at least has n*n switch；It is adjacent
Between battery block, the positive terminal of a section cell of previous battery block passes through n switch and latter battery block
The often negative terminal connection of section cell；Synchronization, by control n*n switch so that previous battery block it is each
Cell positive terminal is only connected with the specific cell negative terminal of latter battery block, by different battery blocks
In there is identical dump energy grade cell be switched to the same parallel branch of battery pack so that it is non-based on switch matrix
Energy consumption formula vehicle lithium battery module turns into the parallel circuit with the different dump energies of n bars.
By above-mentioned technical proposal, the switch matrix is the integrated switch matrix of MOSFET, is controlled by MCU,
Isolated between MOSFET voltage controling end and MCU control interface by photo-coupler.
By above-mentioned technical proposal, S poles and the positive terminal of one piece of cell of previous battery block per n MOSFET
Post is connected, and negative terminal of the D poles respectively with n cell of latter battery block is connected, G extremely voltage controling ends,
MOSFET G poles are isolated by optocoupler with MCU control interfaces.
By above-mentioned technical proposal, latch, MCU control interface and the input of latch are set between MCU and optocoupler
Connection, the output end of latch and the input of optocoupler are connected, and the output end of optocoupler is connected by configuring the G poles of resistance and MOSFET
Connect.
By above-mentioned technical proposal, MCU will have identical dump energy grade by controlling switch matrix in different battery blocks
Cell be switched to the same parallel branch of battery pack so that based on the non-energy consumption formula vehicle lithium battery module of switch matrix into
For the parallel circuit with the different dump energies of n bars, after being calculated by MCU, the parallel branch with different electricity is used into arteries and veins
The mode for rushing width modulated control discharge current controls discharge current in proportion so that all parallel branch discharge times reach one
Cause.
By above-mentioned technical proposal, before based on the non-energy consumption formula vehicle lithium battery module input load of switch matrix, to institute
There is cell in battery block to carry out dump energy estimation, by cell in each battery block according to dump energy number
It is numbered, dump energy is labeled as No. 1~No. n from high to low；To there is the cell of identical label in different battery blocks
It is m to be switched in same parallel branch, every parallel branch monomer cell number of connecting；By MCU controls, switch matrix is from near-earth
End starts to turn on to hot end successively, and n bars parallel branch is turned on.
The beneficial effect comprise that：The present invention is advantageously implemented the vehicle lithium battery mould of non-energy consumption formula electric quantity balancing
Block, which is used, is different from traditional battery balanced strategy, constitutes switch matrix form by multiple MOSFET, can realize battery mould
All cells switch in battery module in any parallel branch in block.Pass through estimating for the dump energy to cell
Calculate, by the cell with same levels dump energy point in same parallel branch, then all parallel branches are used and pressed
Ratio discharge control method makes each bar parallel branch discharge time of battery module keep basically identical.Vehicle lithium battery of the present invention
Module control efficiency is high, and operation is simple and reliable, and reducing causes each cell because lithium battery group uniformity is poor in charge and discharge
The overcharge caused when electric or overdischarge problem, the security and life-span for making the lithium battery module of large-scale integrated get a promotion.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the workflow for the vehicle lithium battery module that the embodiment of the present invention is advantageously implemented non-energy consumption formula electric quantity balancing
Schematic diagram；
Fig. 2 is that the embodiment of the present invention is advantageously implemented adjacent cell in the vehicle lithium battery module of non-energy consumption formula electric quantity balancing
The connection diagram of block；
Fig. 3 is the line map that MCU is controlled by latch to photo-coupler in the embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
There is provided a kind of vehicle lithium battery module for being advantageously implemented non-energy consumption formula electric quantity balancing in the embodiment of the present invention, it
Including the m battery blocks being sequentially connected in series, each battery block saves cell comprising n；It is characterized in that：Divide between adjacent cell block
Not She You a switch matrix, at least there is n*n in each switch matrix and switch；Between adjacent cell block, previous battery block
The positive terminal of a section cell pass through the negative terminal of n switch and the often section cell of latter battery block
Connection；Synchronization, by control n*n switch so that each cell positive terminal of previous battery block only with it is rear
The specific cell negative terminal connection of one battery block, will have identical dump energy grade in different battery blocks
Cell is switched to the same parallel branch of battery pack so that turned into based on the non-energy consumption formula vehicle lithium battery module of switch matrix
Parallel circuit with the different dump energies of n bars.
Wherein, the switch matrix is the integrated switch matrix of MOSFET, is controlled by MCU, MOSFET voltage control
Isolated between end processed and MCU control interface by photo-coupler (optocoupler).
The MOSFET is p-type MOSFET.Control is managed integrated cubicle switchboard by MOSFET between adjacent cell block
Battle array, the dump energy grade of the cell in battery block, cell of the switching with different electricity is in lithium battery mould
Different parallel branch in block so that the electric quantity of single batteries connected in every parallel branch of lithium battery module is roughly equal.
So that battery module has the parallel branch that the electricity that n bar cells quantity is m is not waited.Again by controlling in lithium battery module
The discharge current of every parallel branch, make battery pack discharge time reach it is most long.
Wherein, the S poles per n MOSFET are connected with the positive terminal of one piece of cell of previous battery block, D poles
The negative terminal with n cell of latter battery block is connected respectively, G extremely voltage controling ends, MOSFET G poles by
Optocoupler is isolated with MCU control interfaces.As shown in Fig. 2 being that the embodiment of the present invention is advantageously implemented non-energy consumption formula electric quantity balancing
Vehicle lithium battery module in adjacent cell block connection diagram.
Further, latch is set between MCU and optocoupler, and MCU control interface and the input of latch are connected, lock
The output end of storage and the input of optocoupler are connected, and the output end of optocoupler is connected by configuring the G poles of resistance and MOSFET.Pass through
Use latch, it is possible to reduce MCU control interfaces.As shown in figure 3, to set a latch between MCU and photo-coupler
Schematic diagram.If MCU each control interface is controlled to Y X positions latch parallel with one another, n*n MOSFET
The quantity of required MCU control interfaces is n*n/ (X*Y).MCU passes through the input of I/O mouthfuls of control photo-couplers, optical coupling
The output end of device controls MOSFET G poles after voltage conversion.
Wherein, in the embodiment of the present invention, MCU is controlled by photo-coupler to switch matrix, and detailed process includes,
Cell with identical dump energy grade in different battery blocks is switched to battery pack by MCU by controlling switch matrix
Same parallel branch so that turned into based on the non-energy consumption formula vehicle lithium battery module of switch matrix with the different dump energies of n bars
Parallel circuit, after being calculated by MCU, discharge current is controlled by the parallel branch with different electricity using pulse width modulation
Mode controls discharge current in proportion so that all parallel branch discharge times reach unanimously.
Wherein, as shown in figure 1, in the embodiment of the present invention, being thrown based on the non-energy consumption formula vehicle lithium battery module of switch matrix
Enter before load, dump energy estimation is carried out to the cell in all battery blocks, cell in each battery block is pressed
According to dump energy number be numbered, dump energy from high to low be labeled as No. 1~No. n；To there is phase in different battery blocks
Cell with label is switched in same parallel branch, every parallel branch monomer cell number of connecting for m；Controlled by MCU
System, switch matrix is turned on to hot end successively since near end, and n bars parallel branch is turned on.The n bar parallel branches of determination
The electricity having is arranged in order as No. 1-n numbers from high to low, and current controller is added by the output end in every parallel branch
Part, after being calculated by MCU, equal proportion pulse width modulation (PWM) control of discharge is used by the parallel branch with different electricity
Mode so that all parallel branch discharge times reach unanimously.
In presently preferred embodiments of the present invention, include the latch of 48,8 high speed photo couplings and 32 MOSFET.Wherein,
The latch of 48 is arranged between MCU and photo-coupler, and each latch is connected in parallel.Its course of work is：By 4 latches
32 output ends of device control 32 inputs of 8 high speed photo couplings, and 32 MOSFET are can control after isolating by high speed photo coupling
G poles.It is 8+4=12 to take MCU I/O mouths quantity.Expanded by interface, it is possible to achieve many plates are in parallel, control 32*n
MOSFET, meets the requirement of different monomers number of batteries.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (6)
1. being advantageously implemented the vehicle lithium battery module of non-energy consumption formula electric quantity balancing, it includes the m battery blocks being sequentially connected in series, often
Individual battery block saves cell comprising n；It is characterized in that：A switch matrix is respectively equipped between adjacent cell block, each switch
At least there is n*n switch in matrix；Between adjacent cell block, the positive terminal of a section cell of previous battery block
It is connected by n switch with the negative terminal of the often section cell of latter battery block；Synchronization, by controlling n*n
Individual switch so that the specific cell of each cell positive terminal of previous battery block only with latter battery block
Negative terminal is connected, and the cell with identical dump energy grade in different battery blocks is switched into the same of battery pack
Parallel branch so that the parallel connection with the different dump energies of n bars is turned into based on the non-energy consumption formula vehicle lithium battery module of switch matrix
Circuit.
2. vehicle lithium battery module according to claim 1, it is characterised in that：The switch matrix is that MOSFET is integrated
Switch matrix, is controlled by MCU, is isolated between MOSFET voltage controling end and MCU control interface by photo-coupler.
3. vehicle lithium battery module according to claim 2, it is characterised in that S poles and previous electricity per n MOSFET
The positive terminal connection of one piece of cell of pond block, negative pole of the D poles respectively with n cell of latter battery block connects
Terminal is connected, and G extremely voltage controling ends, MOSFET G poles are isolated by optocoupler with MCU control interfaces.
4. vehicle lithium battery module according to claim 3, it is characterised in that latch is set between MCU and optocoupler,
MCU control interface and the input of latch are connected, and the output end of latch and the input of optocoupler are connected, the output of optocoupler
Hold and connected by the G poles for configuring resistance and MOSFET.
5. vehicle lithium battery module according to claim 4, it is characterised in that MCU is by controlling switch matrix by difference
The cell with identical dump energy grade is switched to the same parallel branch of battery pack in battery block so that based on switch
The non-energy consumption formula vehicle lithium battery module of matrix turns into the parallel circuit with the different dump energies of n bars, after being calculated by MCU, will
Parallel branch with different electricity controls discharge current in proportion by the way of pulse width modulation control discharge current, makes
It must reach unanimously all parallel branch discharge times.
6. vehicle lithium battery module according to claim 5, it is characterised in that automobile-used based on the non-energy consumption formula of switch matrix
Before lithium battery module input load, dump energy estimation is carried out to the cell in all battery blocks, by each battery block
Middle cell according to dump energy number be numbered, dump energy from high to low be labeled as No. 1~No. n；By different electricity
In the block of pond with identical label cell be switched in same parallel branch, every parallel branch connect monomer cell number be
m；By MCU controls, switch matrix is turned on to hot end successively since near end, and n bars parallel branch is turned on.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510264432.8A CN104882642B (en) | 2015-05-22 | 2015-05-22 | It is advantageously implemented the vehicle lithium battery module of non-energy consumption formula electric quantity balancing |
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| CN201510264432.8A CN104882642B (en) | 2015-05-22 | 2015-05-22 | It is advantageously implemented the vehicle lithium battery module of non-energy consumption formula electric quantity balancing |
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| CN104882642A CN104882642A (en) | 2015-09-02 |
| CN104882642B true CN104882642B (en) | 2017-08-22 |
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| CN113484756A (en) * | 2021-06-22 | 2021-10-08 | 广州杰赛科技股份有限公司 | Balanced discharge management method for storage battery pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3326729A1 (en) * | 1983-07-25 | 1985-02-07 | Siemens AG, 1000 Berlin und 8000 München | METHOD FOR OPERATING AN ELECTROCHEMICAL STORAGE |
| JP3479872B2 (en) * | 1998-12-25 | 2003-12-15 | 富士通アクセス株式会社 | Charge / discharge device |
| DE10101542A1 (en) * | 2000-09-25 | 2002-04-11 | Amita Technologies Inc Ltd | Unit for equalizing voltage of series-connected accumulator cells, comprises switching circuit and control accumulator, to transfer energy between them |
| JP4196122B2 (en) * | 2005-02-25 | 2008-12-17 | パナソニック株式会社 | Battery pack |
| DE102010041028A1 (en) * | 2010-09-20 | 2012-03-22 | Robert Bosch Gmbh | Power supply network and method for charging at least one energy storage cell serving as energy storage for a DC voltage intermediate circuit in a power supply network |
| DE102011006761A1 (en) * | 2011-04-05 | 2012-10-11 | Robert Bosch Gmbh | Switching matrix of switching system, has switching devices that are arranged to switch supply terminals with respect to output ports in response to control signals to form series/parallel/bridging circuit with power sources |
| CN202368390U (en) * | 2011-09-26 | 2012-08-08 | 李小平 | Recycler for electric motor car braking energy |
| CN102832652A (en) * | 2011-12-29 | 2012-12-19 | 中航锂电（洛阳）有限公司 | Active equalizer circuit of lithium cell pack |
| US9531001B2 (en) * | 2012-06-25 | 2016-12-27 | Robert Bosch Gmbh | Battery cell with flexible wireless temperature sensor |
| EP2757653B1 (en) * | 2013-01-17 | 2017-06-28 | Fico Triad S.A. | Electronic device suitable for managing the direction of current and battery made up of modules which incorporate said device |
| JP5975169B2 (en) * | 2013-03-29 | 2016-08-23 | 日本電気株式会社 | Charge / discharge device, charge / discharge control method, and program |
| FR3005535B1 (en) * | 2013-05-09 | 2016-10-21 | Commissariat Energie Atomique | SECURITY SYSTEM FOR BATTERY MODULE OF ACCUMULATORS AND METHOD OF BALANCING A CORRESPONDING BATTERY MODULE |
| CN204304529U (en) * | 2014-12-19 | 2015-04-29 | 山东大学 | A kind of Pack to Cell equalizing circuit of deinterleaving block |
| CN104578310A (en) * | 2015-01-23 | 2015-04-29 | 深圳市沃特玛电池有限公司 | Battery set energy balance circuit |
| CN104578322A (en) * | 2015-01-30 | 2015-04-29 | 天津工业大学 | Battery pack energy balance structure and implementation method thereof |
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Effective date of registration: 20181129 Address after: 430033 Office of Changqing Lighting City, 208 Hanxi Road, Qiekou District, Wuhan City, Hubei Province Patentee after: Wang Qiunian Address before: 430023 No. 8 Development Avenue, Qiaokou District, Wuhan City, Hubei Province Patentee before: Wuhan Ju Neng cluster Science and Technology Ltd. |
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