CN108172747A - It is a kind of first go here and there after and type dynamic lithium battery group - Google Patents
It is a kind of first go here and there after and type dynamic lithium battery group Download PDFInfo
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- CN108172747A CN108172747A CN201810013084.0A CN201810013084A CN108172747A CN 108172747 A CN108172747 A CN 108172747A CN 201810013084 A CN201810013084 A CN 201810013084A CN 108172747 A CN108172747 A CN 108172747A
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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
- 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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- 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 it is a kind of first go here and there after and type dynamic lithium battery group.Single lithium cell only is carried out connecting and then carries out parallel connection by the present invention first forms standard battery module, and voltage and volume priority the second echelon of selection lithium battery of these standard battery modules utilize the common voltage of product and capacity；The then series connection first in parallel of these standard battery modules is formed into lithium battery group again.In standard battery module, monomer lithium cell is connected first, it can reduce the thermal runaway security risk brought by lithium cell short circuit to battery pack, and can realize the consistency of each series circuit operating mode with increasing for serial number, so as to the extension beneficial to battery pack cycle life；Each series arm deviation or failure can be inhibited to capacitance loss caused by battery pack by carrying out parallel connection again；It is preferred that echelon is conducive to disassemble standard module progress echelon utilization after battery pack is retired using the voltage and capacity of product.Present invention can apply to power battery technology field, commercial application prospect is wide.
Description
Technical field
The present invention relates to dynamic lithium battery technical group field, battery core electrical connection side in more particularly to a kind of dynamic lithium battery group
Formula.
Background technology
With flourishing for electric vehicle, dynamic lithium battery group is widely used.Current driving force lithium battery
The electric connection mode of battery core is organized, common technical solution is the mode connected after elder generation is in parallel, this battery pack electric connection mode
Advantage is that have certain inhibiting effect to the inconsistency of parallel branch battery core, and the battery core in same parallel branch can also share one
A BMS reduces the cost of battery management system.
But this elder generation is that there are security risks the problem of simultaneously the electric connection mode of string is maximum afterwards, it is well known that lithium cell
Maximum security risk is internal short-circuit, for the connection mode gone here and there first and afterwards, once a wherein lithium cell short circuit, then therewith
Other battery cores in parallel are just concentrated discharges to it, which may result in thermal runaway because electric current is excessive, generates leakage, burning, quick-fried
The safety accidents such as fried.
In order to prevent the common practice of security risk, at present conventional solution caused by battery core is short-circuit and then electric current is excessive
It is to connect a fuse, the fuse wire if electric current is excessive to each battery core.Such as tesla's automobile power cell
Packet is welded using ultrasonic wave aluminium wire, and aluminium welding wire has fusing function, once the excessive aluminium welding wire of battery core short circuit current will fuse；
Domestic electric vehicle industry frequently with mode be directly on the electric connecting sheet being connect with battery core setting cross-sectional area bottleneck, lead to
Crossing part reduces the cross-sectional area of electric connecting sheet so as to play the role of fuse.
Although however, increase fuse can reduce battery core short circuit to a certain extent caused by electric current cross Risks, but still
So there are the following problems：
First, the internal short-circuit risk of battery core still remains, because the generation of battery core internal short-circuit is insured with battery core external connection
Silk is unrelated, and the fuse of battery core external connection plays the role of only when battery core internal short-circuit occurs, can be with fusing
Mode blocks remaining battery core in parallel therewith to concentrate and is large current discharge to short-circuit battery core；
Secondly, battery core parallel with one another is since internal resistance is not consistent, this results in flowing through the electric current of each battery core in parallel also not
Unanimously, since the internal resistance of lithium cell in itself is very small, m Ω to tens of m Ω are usually from counted, it is difficult to ensure that the internal resistance of every battery core is protected
It holds unanimously, the electric current that the battery core that an internal resistance is 4m Ω flows through is the 2 of electric current times that the battery core that an internal resistance is 8m Ω flows through！It is interior
The fuse of its connection of smaller, electrical current bigger the battery core of resistance has higher fusing risk, especially in the big work(of battery pack
When rate works more very；Simultaneously because inconsistent, each battery core operating mode of the internal resistance of each battery core and electric current in parallel circuit
Inconsistent its aging and the capacity attenuation of also resulting in also can be inconsistent, this cause again battery pack capacity attenuation aggravate；
Thirdly, in the circuit of more battery core parallel connections, once first battery core fusing occurs, the electric current which undertakes will
It is diverted to remaining battery core in parallel therewith so that the phenomenon that remaining battery core follows fusing is aggravated, and result is exactly battery inclusion quantity
Attenuation aggravation！
In addition, fuse fuses due to overheat, the high temperature that this fusing process can generate even spark is easily lighted in battery pack
The electrolyte of leakage or volatilization is so as to cause the safety accident of battery pack burning or explosion；
Reason in summary, at present lithium battery pack first and the electrical connection conventional solution gone here and there afterwards there is only battery core short circuits to cause
Security risk, while the capacity attenuation of battery pack is fast, cycle life is low.
Invention content
The purpose of the present invention is reduce battery core short circuit is brought to battery pack in lithium battery pack security risk while extend lithium
Battery pack cycle life.
The specific implementation of this product technology scheme is as follows：
1st, setting composition battery pack（3）Standard battery module（2）Voltage and capacity, specific technical conditions needed to be considered will
It has asked：
A, the battery pack（3）By the standard battery module（2）Connection forms in groups, therefore the standard battery module（2）'s
Voltage and capacity should be according to the battery packs（3）The requirement of total voltage and total capacity decomposed；
B, the standard battery module（2）Middle single battery core（1）Serial number is more, then the safety that series circuit battery core short circuit band comes
Hidden danger is lower while series circuit internal resistance consistency is higher；But once there is open circuit to battery pack in the case that series connection is excessive
Capacitance loss bigger；
C, the battery pack is taken into account（3）The standard battery module dismantled after retired（2）Carry out the facility that echelon utilizes
Property, i.e., described standard module（2）Voltage platform should be with echelon using the voltage platform of product is consistent or the normal cell
Module（2）It can be realized after being connected consistent using the voltage platform of product with echelon；In this way, when the battery pack（3）It is retired,
The standard battery module dismantled（2）The second echelon product can directly be applied to.
2nd, by the X single battery core（1）It first connects, then these series arms is carried out with Y parallel connection, described in formation
Standard battery module（2）, electrical property and conventional solution comparative analysis are as follows：
1）, battery core short-circuit risks comparative analysis：
One independent single battery core（1）Internal short-circuit, since energy is smaller, can't occur burning and explosion safety
Accident, national product standard to battery core puncture testing and require not burn, not explode；But if having, multiple battery cores are in parallel,
A then wherein short circuit, in parallel battery core can concentrate the battery core short-circuit to this to discharge therewith for remaining, may result in electric current
Excessive and then thermal runaway, burning and explosion；
In the technical solution of the present invention, as a result of the battery core connection mode connected first, then in series branch's electricity
Lu Zhong, single battery core short circuit only can't cause the short circuit of entire series branch's circuit, all on only entire series circuit
Battery core all short circuit just can really lead to the short circuit of entire branch so that cause other parallel branches to its flow into high current, into
And lead to thermal runaway；Therefore, using the technical solution connected first can be greatly lowered battery core short circuit band come safety
Hidden danger；
η is set as single only described battery core（1）The probability value of short circuit occurs, χ is the standard battery module（2）Middle battery core series electrical
The string number on road, Y are in the standard battery module（2）It is interior that number in parallel in parallel is carried out to the series circuit, then the standard
Battery module（2）It is because battery core short circuit leads to the probability value of security risk：Yηχ；The entire battery pack（3）Because battery core short circuit is led
The probability value for causing security risk is M Y ηχ, wherein M is forms the battery pack（3）The standard battery module of finished product（2）'s
Quantity；
If using traditional elder generation and after go here and there technical solution, the probability value that short circuit occurs for battery core in battery pack is MYX η；
Since M, Y, X are the integer more than 1, η is the pure decimal less than 1, therefore M Y ηχ＜ MYX η, meaning are：It is of the invention first
It is first and electric in string technical solution afterwards to be less than tradition for battery pack security risk caused by battery core short circuit in technical solution after string simultaneously
Core short circuit is to security risk caused by battery pack.
2), BMS voltage securities protection comparative analysis：
In almost all of battery pack product, BMS will be monitored and protect to the voltage of battery core, including high-voltage point
Overcharge the Cross prevention of protection and low voltage point；In the technical solution of the present invention, any battery core（1）Short circuit, then this battery core
Voltage will quickly fall to less than the low-voltage protection point, so as to trigger BMS low-voltage variation functions, CAN communication report therefore
Barrier, makes failure be repaired and excluded；And go here and there in traditional elder generation and afterwards in technical solution, since more battery cores are connected in parallel,
A wherein battery core short circuit is until fusing can't lead to the significant change of entire module voltage in parallel, therefore will not trigger BMS
And report failure, battery pack cannot just repair, and continue to run in spite of illness, and capacity accelerates decline, cycle life substantially to reduce.
3）, operating current and internal resistance consistency comparative analysis：
It goes here and there in traditional elder generation and afterwards in technical solution, more battery cores are connected in parallel, these battery core voltage values in parallel are identical, but
Internal resistance is not consistent, is learnt according to Ohm's law and flows through the electric current of battery core for I=U/R, I is the electric current for flowing through battery core, U in formula
It is battery core internal resistance for battery core both end voltage, R, since battery core shunt voltage value U is equal, therefore the electric current that the big battery core of internal resistance flows through
Small, the electric current that the small battery core of internal resistance flows through is big；Since the electric current that every battery core flows through is inconsistent, for a long time using battery core can be caused
Degree of aging it is inconsistent, so as to cause the battery pack service life accelerate fail；
And in the technical solution of the present invention, due to first employing series connection single channel, more battery cores are connected, and flow through the electric current of series circuit
It is I=XU/ according to Ohm's law（R1+R2+R3+……+Rx）=U/[（R1+R2+R3+……+Rx）/ X], according to probability theory
The law of large numbers,（R1+R2+R3+……+Rx）Convergence in the mean from the value of/X to all battery core internal resistances, i.e., with the battery core（1）String
Join the increase of number, the internal resistance of each series circuit tends to consistent, is then achieved that a good technique effect：Each series circuit
Electric current tend to consistent！
I.e.：In the technical solution of the present invention, the internal resistance of all series arms is consistent with electric current trend；All battery core operating modes one
It causes, therefore the aging of battery core can also tend to consistent with inducing capacity fading, it is achieved thereby that the extension of battery pack cycle life；
In addition, there are one the factors for influencing battery pack cycle life：In conventional solution, the breaking phenomena of lithium cell
Occur, often because short circuit leads to high current and then Zapping circuit just generates open circuit, and in the technical solution of the present invention, even if
Indivedual battery core short circuits will not cause entire series arm that high current occurs, and so as to avoid the generation of open circuit fault, not resolve
Battery pack capacitance loss caused by road, the cycle life of battery pack of the present invention are also just further extended.
3rd, according to the battery pack（3）Voltage and capacity requirement, to the normal cell mould money（2）Carry out K parallel connection
Then n times connect to form the battery pack（3）Finished product.
4th, the battery pack（3）After-sales service, can be to the standard battery module of failure（2）It is replaced.
5th, the battery pack（3）It is retired, disassemble the standard battery module（2）Carry out echelon recycling.
Preferably, the lithium standard battery module（2）Nominal voltage selection 12V or 24V or 36V or 48V or 60V or
72V, convenient for the battery pack（3）After retired, the standard battery module is disassembled（2）Carry out echelon utilization.
It to sum up analyzes, compared with prior art, after first string of the present invention and type battery pack safety is improved, follows
The ring service life is extended.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the application, this hair
Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention；
In the accompanying drawings, Fig. 1 is the electrical block diagram of the present invention：
Figure label explanation：1st, battery core；2nd, standard battery module；3rd, battery pack.
Specific embodiment
It is below with reference to the accompanying drawings and in conjunction with the embodiments, next that the present invention will be described in detail.
After a kind of first string and type dynamic lithium battery group, specific product implementation example are as follows：
1st, assume now to need to design an electric automobile power battery packet, use the battery core（1）For 18650 ternary lithium batteries, hold
Measure 2600mAh, the battery pack（3）360 ± 10V of voltage request, 120 ± 10Ah of capacity requirement；
2nd, the standard battery module is determined（2）Voltage and capacity specifications；Design condition has：
A, the battery pack（3）By the standard battery module（2）Connection forms in groups, therefore the standard battery module（2）'s
Voltage and capacity should be according to the battery packs（3）The requirement of total voltage and total capacity decomposed；
B, the standard battery module（2）Middle single battery core（1）Serial number is more, then the safety that series circuit battery core short circuit band comes
Hidden danger is lower while series circuit internal resistance consistency is higher；But once there is open circuit to battery pack in the case that series connection is excessive
Capacitance loss bigger；
C, the battery pack is taken into account（3）The standard battery module dismantled after retired（2）Carry out the facility that echelon utilizes
Property, i.e., described standard module（2）Voltage platform should be with echelon using the voltage platform of product is consistent or the normal cell
Module（2）It can be realized after being connected consistent using the voltage platform of product with echelon；In this way, when the battery pack（3）It is retired,
The standard battery module dismantled（2）The second echelon product can directly be applied to.
3rd, the standard battery module is set（2）Specification for 7 strings 9 simultaneously, then the standard battery module（2）Voltage be
7 × 3.6V=25.2V, capacity are 9 × 2.6Ah=23.4Ah；5 standard battery modules（2）Parallel connection, capacity for 5 ×
23.4Ah=117Ah meets the battery pack（3）Capacity requirement；Such parallel connection module carries out 14 series connection again, after series connection
Voltage for 14 × 25.2V=352.8V, meet the battery pack（3）The voltage request of 360 ± 10V；
4th, by 18650 ternary lithium cells of 7 capacity for 2600mAh（1）It connects, then such series arm is carried out 9
Secondary parallel connection forms the standard battery module module（2）；
The standard module（2）It is as follows with traditional first and afterwards string technical solution electrical property comparative analysis：
1）, short-circuit risks comparative analysis
Assuming that single battery core（1）Probability η=0.0001 of short circuit, i.e. a ten thousandth occurs, then carries out the series electrical after 7 series connection
The probability that short circuit occurs for road is ηχ=（0.0001）7=1×10-28, the standard battery module（2）The probability Y η of short circuit occurχ=9
×10-28, the battery pack（3）The probability that short circuit occurs is M Y ηχ=70×9×10-28=0.63×10-25；（Wherein, η is institute
State battery core（1）The probability value of short circuit occurs, χ is the standard battery module（2）The string number of middle battery core series circuit, Y are parallel connection
Number, M is forms the battery pack（3）The standard battery module of finished product（2）Quantity）；
0.63×10-25This probability value is so low, it is meant that the battery pack is given in battery core short circuit（3）Bring burning and it is quick-fried
Fried risk is avoided very well；Simultaneously as series connection makes short-circuit risks probability value, exponentially functional relation reduces, this means that
Battery core serial number in actual product, considers the battery pack without that can reach security purpose very well too much（3）It is torn open after retired
Solve the standard module（2）Directly carry out the convenience that echelon utilizes, the standard battery module（2）Nominal voltage it is usually excellent
First select 12V or 24V or 36V or 48V or 60V or 72V；
The traditional electric connection technology scheme of control cell packet is the connection mode gone here and there first and afterwards, then the battery core（1）45 simultaneously, so
98 string afterwards, the threat probability values that short circuit occurs for battery pack are：45 × 98 × 0.0001=0.441=44.1%, this value-at-risk is suitable
It is high so that battery core short circuit simultaneously fuses as common phenomenon, this has also been confirmed in conventional solution simultaneously, and first battery core is carried out
In parallel and then series connection mode to each battery core it is necessory to all connect a fuse；
Obvious conclusion is：The present invention can significantly reduce the security risk brought by battery core short circuit to battery pack.
2), BMS voltage securities protection comparative analysis：
In actual product, since BMS will be monitored and protect to the voltage of battery core, when battery core overtension（Ternary lithium
Battery core generally sets high voltage protective point as 4.2V）Or brownout（Ternary lithium cell generally sets low-voltage protection point as 2.5V）
When, BMS can cut off circuit and realize battery core protection；In the technical solution of the present invention, any battery core（1）Short circuit, then this battery core
Voltage will quickly fall to less than the low-voltage protection point, so as to trigger BMS low-voltage variation functions, CAN communication report therefore
Barrier, makes failure be repaired and discharged, the battery pack（3）It keeps fit operation, is extended cycle life；And in tradition
Elder generation and go here and there afterwards in technical solution, since 45 battery cores are connected in parallel, wherein battery core short circuit is until fusing can't be led
The significant change of entire module voltage in parallel is caused, therefore BMS will not be triggered and report failure, battery pack cannot just repair, band
Disease continues to run with, and remaining battery core electric current increases on parallel circuit, and fusing phenomenon forms domino effect, and capacity acceleration declines
It moves back, the service life substantially reduces.
3）, operating current, internal resistance consistency comparative analysis：
It goes here and there in traditional elder generation and afterwards in technical solution, 45 battery cores are connected in parallel, these battery core voltage values in parallel are identical,
But internal resistance is not consistent, and according to Ohm's law I=U/R, the electric current that the big battery core of internal resistance flows through is small, and the small battery core of internal resistance flows through
Electric current is big；Since the electric current that every battery core flows through is inconsistent, for a long time using the degree of aging of battery core can be caused inconsistent, so as to
The battery pack service life is caused to accelerate decline；
And in the technical solution of the present invention, due to first employing series circuit, 7 battery cores are connected, and flow through the electric current of series circuit
It is I=7U/ according to Ohm's law（R1+R2+R3+R4+R5+R6+R7）=U/[（R1+R2+R3+R4+R5+R6+R7）/ 7], according to
The law of large numbers of probability theory,（R1+R2+R3+R4+R5+R6+R7）Convergence in the mean from/7 value to all battery core internal resistances, i.e., with
The increase of battery core serial number, the internal resistance of each series circuit tend to consistent, and respectively go here and there branch circuit parallel connection voltage also always, are determined according to ohm
Rule learns that the electric current of each series circuit tends to consistent！Since all battery core operating modes are consistent, so aging and the inducing capacity fading of battery core
Also it can tend to consistent, it is achieved thereby that the battery pack（3）The extension of cycle life.
5th, by 5 standard battery modules（2）Parallel connection, such parallel circuit carry out 14 series connection, then form institute again
State battery pack（3）, capacity is 5 × 23.4Ah=117Ah, and voltage is 14 × 25.2V=352.8V, meets the battery pack（3）
To the design requirement of voltage and capacity；Herein it should be noted that a main points, that is, the standard battery module（2）First 5 simultaneously
Connection and then again 14 strings rather than first 14 strings and then 5 simultaneously, this is because the standard battery module（2）After first carrying out 5 simultaneously, module
The series circuit of interior 7 battery cores is formed 5 × 9=45 simultaneously, and this connection mode can preferably inhibit part series circuit capacity
Difference gives the battery pack（3）The capacity attenuation brought；
6th, the battery pack（3）After-sales service, can be to the standard battery module of failure（2）It is replaced；
7th, the battery pack（3）It is retired, disassemble the standard battery module（2）Carry out echelon recycling.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. it is a kind of first go here and there after and type dynamic lithium battery group, it is characterised in that：Including battery core（1）, standard battery module（2）And battery
Packet（3）, the battery pack（3）By the standard battery module（2）K times then n times in parallel are connected in series, the normal cell mould
Block（2）By the battery core（1）It carries out X series connection and then is formed in parallel for Y times, wherein K, N are >=1 integer, and Y is >=2 integer,
X is >=3 integer.
2. it is according to claim 1 it is a kind of first go here and there after and type dynamic lithium battery group, it is characterised in that because of the battery core（1）It is short
Road leads to overcurrent and then causes the battery pack（3）Occur thermal runaway security risk probability value be： NKYηχ；Wherein, η is institute
State battery core（1）The probability value of short circuit occurs, X is the standard battery module（2）The interior battery core（1）Serial number, Y is described
Standard battery module（2）The interior battery core（1）Series arm number in parallel, K be the battery pack（3）The interior normal cell
Module（2）Number in parallel, N be the battery pack（3）The interior standard battery module（2）Serial number.
3. it is according to claim 1 it is a kind of first go here and there after and type dynamic lithium battery group, it is characterised in that the normal cell mould
Block（2）It is interior all by X only battery cores（1）The internal resistance value of the series arm of formation meets the law of large numbers of probability theory, as X takes
X from the increase of value to battery core internal resistance mean value times of is restrained, since internal resistance tends to consistent, each series circuit voltage phase when the parallel connection
Deng learning that the electric current of each series arm also tends to consistent according to Ohm's law, and then realize the consistent of each series arm operating mode.
4. it is according to claim 1 it is a kind of first go here and there after and type dynamic lithium battery group, it is characterised in that the normal cell mould
Block（2）Voltage and preferred the second echelon of lithium battery of capacity can be passed through using the common voltage of product and capacity or its voltage
Series system is realized utilizes the same platform of the common voltage of product with the second echelon.
5. it is according to claim 1 it is a kind of first go here and there after and type dynamic lithium battery group, it is characterised in that the normal cell mould
Block（2）Voltage platform preferred 12V or 24V or 36V or 48V or 60V or 72V.
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| CN201810013084.0A CN108172747A (en) | 2018-01-08 | 2018-01-08 | It is a kind of first go here and there after and type dynamic lithium battery group |
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| CN201810013084.0A CN108172747A (en) | 2018-01-08 | 2018-01-08 | It is a kind of first go here and there after and type dynamic lithium battery group |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888416A (en) * | 2019-03-04 | 2019-06-14 | 江苏博煦电池科技有限公司 | A kind of method that lithium ion battery combines in series and parallel |
| CN110303940A (en) * | 2019-07-31 | 2019-10-08 | 河南豫清新能源产业有限公司 | A kind of box-like lithium battery BMS system production method of group of networks |
| CN110444712A (en) * | 2019-08-22 | 2019-11-12 | 谢馥伊 | A kind of safe lithium dynamical battery module of overall process |
| CN113328208A (en) * | 2020-02-28 | 2021-08-31 | 比亚迪股份有限公司 | Battery pack and electric vehicle |
| WO2022198851A1 (en) * | 2021-03-26 | 2022-09-29 | 三一汽车制造有限公司 | Thermal runaway processing method and apparatus, and readable storage medium |
| CN117033953A (en) * | 2023-10-10 | 2023-11-10 | 深圳蓝锂科技有限公司 | Gradient utilization analysis method and system for achieving retired battery based on BMS |
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| CN105406015A (en) * | 2015-06-02 | 2016-03-16 | 重庆大学 | Power battery packs connected in series to form group |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888416A (en) * | 2019-03-04 | 2019-06-14 | 江苏博煦电池科技有限公司 | A kind of method that lithium ion battery combines in series and parallel |
| CN110303940A (en) * | 2019-07-31 | 2019-10-08 | 河南豫清新能源产业有限公司 | A kind of box-like lithium battery BMS system production method of group of networks |
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| CN113328208A (en) * | 2020-02-28 | 2021-08-31 | 比亚迪股份有限公司 | Battery pack and electric vehicle |
| WO2021169721A1 (en) * | 2020-02-28 | 2021-09-02 | 比亚迪股份有限公司 | Battery pack and electric vehicle |
| WO2022198851A1 (en) * | 2021-03-26 | 2022-09-29 | 三一汽车制造有限公司 | Thermal runaway processing method and apparatus, and readable storage medium |
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