CN106058279A - Lithium battery pack grouping method - Google Patents
Lithium battery pack grouping method Download PDFInfo
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- CN106058279A CN106058279A CN201610384368.1A CN201610384368A CN106058279A CN 106058279 A CN106058279 A CN 106058279A CN 201610384368 A CN201610384368 A CN 201610384368A CN 106058279 A CN106058279 A CN 106058279A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 12
- 230000001174 ascending effect Effects 0.000 claims abstract description 15
- 230000000295 complement effect Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013589 supplement Substances 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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
- H01M6/5011—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature for several cells simultaneously or successively
-
- 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
-
- 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)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a lithium battery pack grouping method, which comprises the following steps: taking a batch of batteries with the quality meeting the process requirements and the number of batteries being N x (M + M), wherein N is the number of parallel batteries, M is the number of series batteries, and M is the number of excessive N parallel batteries; and the difference values obtained by N being even numbers or odd numbers are arranged according to the absolute value of the difference values in a descending order, the front M groups are removed, and the rest M groups are the target battery packs to be matched. According to the invention, the M N parallel battery packs are formed by splicing the M + M small battery packs with ascending capacity and the M + M small battery packs with descending capacity in a pairwise manner, so that the high capacity and the low capacity are complementary, the capacity difference between each parallel group is reduced, the consistency of the target battery pack is greatly improved, the method is simple, and the automatic treatment is easy to realize; the matching method is formed by splicing small battery packs in ascending and descending order pairwise, and finally removing parallel groups with larger difference with the mean value, so that the matching consistency is greatly improved; the method is simple and easy to realize automation.
Description
Technical field
The present invention relates to a kind of lithium battery pack method for group matching.
Background technology
Current quadrate lithium battery pack is respectively adopted mode in parallel and serial increases capacity and voltage, usual way
It is that first battery is carried out combo, the often cell parallel in group, uses between group with group and connect.
The requirement of combo is that between group and group, capacity and difference need the least, so combo is workload in cell p ack
Greatly, the flow process that difficulty is higher, the result of combo is related to course continuation mileage and the life-span of set of cells.
The most common method for group matching is to divide the cell into several gears, then according to number of batteries in each gear
How many power taking ponds the most in proportion are made into one group, if group is relatively big with pool-size and gap, then exchanges battery and modify.This kind of method will
Battery is divided into several gears, considerably increases difficulty and the complexity of operation, is unfavorable for improving efficiency, it is also difficult to automatization.
Authorization Notice No. CN 104103866 B discloses a kind of lithium battery method for group matching, and lithium battery is by N*M single lithium battery group
The battery module of first N the cell parallel M group again series connection become, is divided into after N*M battery data ascending order by measure being arranged
By first half section ascending order data and the whole segment data of second half section descending data so that during combo, high low capacity is complementary, reduces each
Capacity difference between group in parallel.
Summary of the invention
For the deficiencies in 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, the method comprises the steps:
(1) taking a collection of quality and meet technological requirement and cell number is N* (M+m) battery only, N is batteries in parallel connection number, and M is
Series-connected cell number, m is N the set of cells number of excess；
(2) if N is even number, it is one group that random-blind takes N/2 battery, and (2M+2m) group, derives every Battery pack from data base altogether
Capacity data and sue for peace after, by total capacity ascending order arrange, 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) is added the most two-by-two, and value is compiled successively
Number it is B (01), B (02) ..., B (M+m), then by B (01), B (02) ..., B (M+m) deducts B (01), B (02) successively ..., B
(M+m) average, tries to achieve difference；
If N is odd number, it is one group that random-blind takes (N+1)/2 battery, takes (M+m) group altogether, derives from data base and often organizes electricity
Arranging by total capacity ascending order after the capacity data in pond summation, number consecutively is A (01), A (02) ..., A (M+m)；Random-blind again
Taking (N-1)/2 battery is one group, altogether (M+m) group, derive capacity data the summation of every Battery pack from data base after, holds by total
Amount 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 the most two-by-two, and value number consecutively is C (01), C (02) ..., C (M+m), then by C (01), C
(02) ..., C (M+m) deducts C (01), C (02) successively ..., the average of C (M+m), try to achieve difference；
(3) above-mentioned N is even number or difference that odd number is tried to achieve is by absolute difference descending, m group before rejecting, remaining
M group is i.e. the target battery group needing to join.
Beneficial effects of the present invention: due to the fact that M N set of cells are the baby battery group by M+m pool-size ascending order and M
The baby battery group of+m pool-size descending is spliced the most successively, and high low capacity is complementary, decreases the appearance between each and joint group
It is poor to measure, and finally eliminates the also joint group differing bigger with average, greatly improves the concordance of target battery group, method letter
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
The also joint group that difference is bigger, greatly improves the concordance of combo；Method is simple, it is easy to accomplish automatization.
Detailed description of the invention
A kind of method for group matching of lithium battery pack
The set of cells of one piece of N and M of combo string, takes a collection of quality and meets technological requirement and cell number is N* (M+m) electricity only
Pond, m refers to N the set of cells number of excess；
Wherein: if N is even number, it is one group that random-blind takes N/2 battery, (2M+2m) group altogether, derives from data base and often organizes electricity
The capacity data in pond, is often arranged by total capacity ascending order after group summation, 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) is the most two-by-two
It is added, and value number consecutively is B (01), B (02) ..., B (M+m), 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) deducts B (01), B (02) successively ..., the average of B (M+m), try to achieve difference
Value, by absolute difference descending, m group before rejecting, remaining M group is i.e. the target battery group needing to join；
If N is odd number, it is one group that random-blind takes (N+1)/2 battery, takes (M+m) group altogether, derives from data base and often organizes electricity
The capacity data in pond, is often arranged by total capacity ascending order after group summation, and number consecutively is A (01), A (02) ..., A (M+m)；Again with
Blind (N-1)/2 battery that takes of machine is one group, altogether (M+m) group, derives the capacity data of every Battery pack from data base, often after group summation
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 the most two-by-two, and value number consecutively is C (01), C (02) ..., C (M+m), the most such as
Under:
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) deducts C (01), C (02) successively ..., the average of C (M+m), try to achieve difference
Value, by absolute difference descending, m group before rejecting, remaining M group is i.e. the target battery group needing to join.
Owing to M N set of cells are the baby battery group by M+m pool-size ascending order and the baby battery group of M+m pool-size descending
Being spliced the most successively, high low capacity is complementary, decreases the capacity difference between each and joint group, and finally eliminate with all
The also joint group that value difference is bigger, greatly improves the concordance of target battery group, and method is simple, it is easy to accomplish automatic business processing；
This kind of method for group matching takes the baby battery group of ascending order and descending to be spliced two-by-two, and finally reject differ with average bigger also
Joint group, greatly improves the concordance of combo.Method is simple, it is easy to accomplish automatization.
As a example by the pack combo of 10 and 10 strings, take 10* (10+2), totally 120 spec battery, M at random from lane database
Being 10, N is 10, and m is 2, derives capacity data, sorts by battery bar code, and capacity is lack of alignment, every five data summing values,
Such as table 1.
Table 1
Arranging 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) is added the most two-by-two, and value number consecutively is B
(01), B (02) ..., B (M+m), then by B (01), B (02) ..., B (M+m) deducts B (01), B (02) successively ..., B (M+m)
Average, try to achieve difference；Such as table 2.
Table 2
The B (01), B (02) that reject absolute difference forward organize 2 groups, and remaining 10 groups is i.e. target 10 and 10 string set of cells.
In actual production, in parallel and serial number is much larger than example values, or increases m value, it is thus achieved that target battery
Group concordance will be significantly better than example results.
Above content is only to present configuration example and explanation, affiliated those skilled in the art couple
Described specific embodiment makes various amendment or supplements or use similar mode to substitute, without departing from invention
Structure or surmount scope defined in the claims, all should belong to protection scope of the present invention.
Claims (1)
1. a lithium battery pack method for group matching, it is characterised in that the method comprises the steps:
(1) take a collection of quality and meet technological requirement and cell number is N*(M+m) battery only, N is batteries in parallel connection number, and M is series connection
Cell number, m is N the set of cells number of excess；
(2) if N is even number, it is one group that random-blind takes N/2 battery, and (2M+2m) group, derives the appearance of every Battery pack from data base altogether
After amount data summation, arranging 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) it is added the most two-by-two, and value is compiled successively
Number it is B (01), B (02) ..., B (M+m), then by B (01), B (02) ..., B (M+m) deducts B (01), B (02) successively ..., B
(M+m) average, tries to achieve difference；
If N is odd number, it is one group that random-blind takes (N+1)/2 battery, takes (M+m) group altogether, derives every Battery pack from data base
Arranging by total capacity ascending order after capacity data summation, number consecutively is A(01), A(02) ..., A(M+m)；Random-blind takes again
(N-1)/2 batteries are one group, altogether (M+m) group, derive capacity data the summation of every Battery pack from data base after, 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) it is added the most two-by-two, and value number consecutively is C (01), C (02) ..., C (M+m), then by C (01), C
(02) ..., C (M+m) deducts C (01), C (02) successively ..., the average of C (M+m), try to achieve difference；
(3) above-mentioned N is even number or difference that odd number is tried to achieve is by absolute difference descending, m group before rejecting, remaining M group
It it is i.e. the target battery group needing to join.
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| CN106058279B CN106058279B (en) | 2018-06-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110459825A (en) * | 2019-08-23 | 2019-11-15 | 郑州中科新兴产业技术研究院 | A kind of high magnification soft package lithium battery method for group matching |
| CN111323723A (en) * | 2020-03-27 | 2020-06-23 | 惠州亿纬集能有限公司 | Method for improving lithium battery capacity tolerance judgment precision |
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