CN106058279B - A kind of lithium battery pack method for group matching - Google Patents

A kind of lithium battery pack method for group matching Download PDF

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Publication number
CN106058279B
CN106058279B CN201610384368.1A CN201610384368A CN106058279B CN 106058279 B CN106058279 B CN 106058279B CN 201610384368 A CN201610384368 A CN 201610384368A CN 106058279 B CN106058279 B CN 106058279B
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battery
difference
consecutively
battery pack
successively
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CN106058279A (en
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余水
李瑜
王启岁
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Hefei Guoxuan High Tech Power Energy Co Ltd
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Hefei Guoxuan High Tech Power Energy Co Ltd
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00Primary cells; Manufacture thereof
    • H01M6/50Methods or arrangements for servicing or maintenance, e.g. maintaining operating temperature
    • H01M6/5011Methods or arrangements for servicing or maintenance, e.g. maintaining operating temperature for several cells simultaneously or successively
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The present invention discloses a kind of lithium battery pack method for group matching, includes the following steps:It is N* that a collection of quality is taken, which to meet technological requirement and cell number,(M+m)Battery only, N are batteries in parallel connection number, and M is series-connected cell number, and m is excessive N and battery pack number;N is that the difference that even number or odd number acquire is arranged by absolute difference descending, and m groups before rejecting, remaining M groups are to need the target battery group matched somebody with somebody.The present invention is due to M N and battery pack is spliced successively two-by-two by the baby battery group of M+m pool-size ascending orders and the baby battery group of M+m pool-size descendings, high low capacity is complementary, reduce the capacity difference between each group in parallel, greatly improve the uniformity of target battery group, method is simple, it is easy to accomplish automatic business processing;Method for group matching of the present invention takes the baby battery group of ascending order and descending to be spliced two-by-two, and finally rejects and larger in parallel group is differed with average, greatly improves the uniformity of combo;Method is simple, it is easy to accomplish automation.

Description

A kind of lithium battery pack method for group matching
Technical field
The present invention relates to a kind of lithium battery pack method for group matching.
Background technology
The mode that current quadrate lithium battery pack is respectively adopted in parallel and serial increases capacity and voltage, usual way It is that combo is first carried out to battery, the cell parallel in every group is used between group and group and connected.
The requirement of combo be between group and group capacity and difference need it is as far as possible small, so combo is workload in cell p ack Greatly, a higher flow of difficulty, the result of combo are related to course continuation mileage and the service life of battery pack.
Method for group matching common at present is to divide the cell into several gears, then according to number of batteries in each gear It is how many that battery is taken to be made into one group in proportion, if group is larger with pool-size and gap, then exchanges battery and modify.Such method will Battery is divided into several gears, considerably increases the difficulty and complexity of operation, is unfavorable for improving efficiency, it is also difficult to automate. 104103866 B of Authorization Notice No. CN disclose a kind of lithium battery method for group matching, and lithium battery is by N*M single lithium battery group Into first N cell parallel again M string formations connection battery module, by N*M battery data by measure ascending order arrangement after be divided into By front half section ascending order data and the whole segment data of second half section descending data so that high low capacity is complementary during combo, reduces each Capacity difference between group in parallel.
The content of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of lithium battery pack method for group matching.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of lithium battery pack method for group matching, this method comprises the following steps:
(1) it is the batteries of N* (M+m) only that a collection of quality is taken, which to meet technological requirement and cell number, and N is batteries in parallel connection number, and M is Series-connected cell number, m are excessive N and battery pack number;
(2) blind at random to take N/2 battery as one group if N is even number, (2M+2m) group, every group of battery is exported from database altogether Capacity data and summation after, by total capacity ascending order arrange, number consecutively be A (01), A (02) ..., A (2M+2m);Then by A (01), A (02) ..., A (M+m) and A (2M+2m), A (2M+2m-1) ..., A (M+m+1) is added and is worth two-by-two successively to be compiled successively Number for B (01), B (02) ..., B (M+m), then by B (01), B (02) ..., B (M+m) subtract B (01), B (02) ..., B successively (M+m) average, acquires difference;
It is blind at random that (N+1)/2 battery is taken to take (M+m) group altogether for one group if N is odd number, export every group of electricity from database It is arranged after the capacity data in pond and summation by total capacity ascending order, number consecutively is A (01), A (02) ..., A (M+m);It is random blind again (N-1)/2 battery is taken as one group, altogether (M+m) group, after capacity data and summation that every group of battery is exported from database, held by total Descending arrangement is measured, number consecutively is B (01), B (02) ..., B (M+m);A (01), A (02) ..., A (M+m) and B (01), B (02) ..., B (M+m) is added and is worth number consecutively as C (01), C (02) ..., C (M+m) two-by-two successively, then by C (01), C (02) ..., C (M+m) subtracts C (01), C (02) ... successively, and the average of C (M+m) acquires difference;
(3) it is that the difference that even number or odd number acquire is arranged by absolute difference descending by above-mentioned N, m groups, remaining before rejecting M groups are to need the target battery group matched somebody with somebody.
Beneficial effects of the present invention:The present invention is due to baby battery group and M that M N and battery pack are by M+m pool-size ascending orders The baby battery group of+m pool-size descendings is spliced successively two-by-two, and high low capacity is complementary, reduces the appearance between each group in parallel Amount is poor, and finally eliminates differ larger with average in parallel group, greatly improves the uniformity of target battery group, method letter It is single, it is easy to accomplish automatic business processing;
Method for group matching of the present invention takes the baby battery group of ascending order and descending to be spliced two-by-two, and finally rejects and average phase Larger in parallel group of difference greatly improves the uniformity of combo;Method is simple, it is easy to accomplish automation.
Specific embodiment
A kind of method for group matching of lithium battery pack
The battery pack of one piece of N of combo and M strings, it is the electricity of N* (M+m) only that a collection of quality is taken, which to meet technological requirement and cell number, Pond, m refer to excessive N and battery pack number;
Wherein:Blind at random to take N/2 battery as one group if N is even number, (2M+2m) group, every group of electricity is exported from database altogether The capacity data in pond is arranged after every group of summation by total capacity ascending order, and number consecutively is A (01), A (02) ..., A (2M+2m);
Then by A (01), A (02) ..., A (M+m) and A (2M+2m), A (2M+2m-1) ..., A (M+m+1) are successively two-by-two It is added and is worth number consecutively for B (01), B (02) ..., B (M+m), it is specific as follows:
B (01)=A (01)+A (2M+2m),
B (02)=A (02)+A (2M+2m-1),
B (M+m)=A (M+m)+A (M+m+1);
Then by B (01), B (02) ..., B (M+m) subtract B (01), B (02) ... successively, and the average of B (M+m) acquires difference Value, absolute difference descending is arranged, m groups before rejecting, and remaining M groups are to need the target battery group matched somebody with somebody;
It is blind at random that (N+1)/2 battery is taken to take (M+m) group altogether for one group if N is odd number, export every group of electricity from database The capacity data in pond is arranged after every group of summation by total capacity ascending order, and number consecutively is A (01), A (02) ..., A (M+m);Again with Machine is blind to take (N-1)/2 battery as one group, altogether (M+m) group, the capacity data of every group of battery is exported from database, after every group of summation It is arranged by total capacity descending, number consecutively is B (01), B (02) ..., B (M+m), A (01), A (02) ..., A (M+m) and B (01), B (02) ..., B (M+m) is added and is worth number consecutively as C (01), C (02) ..., C (M+m) two-by-two successively, specific as follows:
C (01)=A (01)+B (01),
C (02)=A (02)+B (02),
C (M+m)=A (M+m)+B (M+m),
Then by C (01), C (02) ..., C (M+m) subtract C (01), C (02) ... successively, and the average of C (M+m) acquires difference Value, absolute difference descending is arranged, m groups before rejecting, and remaining M groups are to need the target battery group matched somebody with somebody.
Since M N and battery pack are baby battery group by M+m pool-size ascending orders and the baby battery group of M+m pool-size descendings Be spliced successively two-by-two, high low capacity is complementary, reduces the capacity difference between each group in parallel, and finally eliminate with Value differs larger in parallel group, greatly improves the uniformity of target battery group, and method is simple, it is easy to accomplish automatic business processing; Such method for group matching takes the baby battery group of ascending order and descending to be spliced two-by-two, and finally reject differed with average it is larger and Connection group greatly improves the uniformity of combo.Method is simple, it is easy to accomplish automation.
By taking the pack combos of 10 and 10 strings as an example, 10* (10+2) is taken at random from lane database, totally 120 spec batteries, M For 10, N 10, m 2, capacity data being exported, is sorted by battery bar code, capacity is disorderly arranged, every five data summing values, Such as table 1.
Table 1
It is arranged by total capacity ascending order, number consecutively is A (01), A (02) ..., A (2M+2m);Then by A (01), A (02) ..., A (M+m) and A (2M+2m), A (2M+2m-1) ..., A (M+m+1) are added and are worth number consecutively as B two-by-two successively (01), B (02) ..., B (M+m), then by B (01), B (02) ..., B (M+m) subtract B (01), B (02) ..., B (M+m) successively Average, acquire difference;Such as table 2.
Table 2
It rejects absolute difference forward B (01), B (02) and organizes 2 groups, remaining 10 groups are target 10 and 10 string battery packs.
In actual production, in parallel and serial number is much larger than example values or increase m values, the target battery of acquisition Group uniformity will be significantly better than example results.
More than content is only to structure example of the present invention and explanation, affiliated those skilled in the art couple Described specific embodiment does various modifications or additions or substitutes in a similar way, without departing from invention Structure surmounts scope defined in the claims, is within the scope of protection of the invention.

Claims (1)

1. a kind of lithium battery pack method for group matching, this method comprises the following steps:
(1)It is N* that a collection of quality is taken, which to meet technological requirement and cell number,(M+m)Battery only, N are batteries in parallel connection number, and M is series connection Cell number, m are excessive N and battery pack number;
(2)It is blind at random to take N/2 battery as one group if N is even number, altogether(2M+2m)Group exports the appearance of every group of battery from database After measuring data and summing, arranged by total capacity ascending order, number consecutively A(01), A(02)..., A(2M+2m);Then by A(01) With A(2M+2m), A(02)With A(2M+2m-1)..., A(M+m)With A(M+m+1)It is added two-by-two successively and is worth number consecutively for B (01), B (02) ..., B (M+m), then by B (01), B (02) ..., B (M+m) subtract B (01), B (02) ..., B (M+m) successively Average, acquire difference;
It is blind at random to take if N is odd number(N+1)/ 2 batteries are one group, are taken altogether(M+m)Group, from database every group of battery of export It is arranged after capacity data and summation by total capacity ascending order, number consecutively A(01), A(02)..., A(M+m);It is blind at random again to take (N-1)/ 2 batteries are one group, altogether(M+m)Group, after capacity data and summation that every group of battery is exported from database, by total capacity Descending arranges, number consecutively B(01), B(02)..., B(M+m);By A(01)With B(01), A(02)With B(02)..., A(M+ m)With B(M+m)It is added two-by-two successively and is worth number consecutively for C (01), C (02) ..., C (M+m), then by C (01), C (02) ..., C (M+m) subtracts C (01), C (02) ... successively, and the average of C (M+m) acquires difference;
(3)It is that the difference that even number or odd number acquire is arranged by absolute difference descending by above-mentioned N, m groups before rejecting, remaining M groups It is to need the target battery group matched somebody with somebody.
CN201610384368.1A 2016-05-29 2016-05-29 A kind of lithium battery pack method for group matching Active CN106058279B (en)

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CN110459825B (en) * 2019-08-23 2020-10-27 郑州中科新兴产业技术研究院 High-rate soft package lithium battery grouping method

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EP2797140A1 (en) * 2012-02-23 2014-10-29 LG Chem, Ltd. Battery pack having novel structure
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