CN104091974A - Preparation method of lithium ion battery replacement module - Google Patents
Preparation method of lithium ion battery replacement module Download PDFInfo
- Publication number
- CN104091974A CN104091974A CN201410320447.7A CN201410320447A CN104091974A CN 104091974 A CN104091974 A CN 104091974A CN 201410320447 A CN201410320447 A CN 201410320447A CN 104091974 A CN104091974 A CN 104091974A
- Authority
- CN
- China
- Prior art keywords
- module
- battery
- battery core
- internal resistance
- monomer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000178 monomer Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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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
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
-
- 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a preparation method of a lithium ion battery replacement module. The preparation method of the lithium ion battery replacement module comprises the following steps: obtaining a running mileage parameter of a fault battery pack; obtaining capacity information of other modules except a battery module to be replaced, and calculating average capacity of monomer cells; obtaining internal resistance information of other modules except the battery module to be replaced, and calculating average internal resistance of n monomer cells in the modules; selecting the replaced monomer cells with same model numbers, wherein the capacity is 1-1.03 times of the calculated average capacity, the internal resistance is 0.8-1.2 times of the calculated average internal resistance, the running mileage is 0.8-1.2 times of the running mileage parameter and the replaced cells qualified in self discharge form a module according to a primary module assembling method. By virtue of the preparation method of the lithium ion battery replacement module, other abnormality-free cells in the module replaced because of the problem of a single cell in the fault battery pack are used for remaking a module, so that the consistency of the battery pack is improved, the stored cells are reduced, and the running cost of the battery pack is reduced.
Description
Technical field
The present invention relates to electric vehicle engineering field, specifically a kind of lithium ion battery is changed the preparation method of module.
Background technology
Along with the day by day deficient and people of traditional fuel are for the growing interest of environment, the electric automobile research that has started a new round with apply climax.Because lithium ion battery has the advantages such as energy density is high, cycle life is good, electric automobile selects lithium ion battery as driving power substantially at present.Because electric automobile driving power needs higher power output, thereby require driving power generally to adopt higher voltage and the battery pack of certain capacity, certain capacity needs battery core parallel connection less monomer capacity to reach certain capacity requirement, conventionally be referred to as monomer module, reach certain voltage needs the monomer module of some to be together in series.In the actual use procedure of electric automobile, due to reasons such as battery core processing procedure, self discharges, among the module of series connection, often occur that individual module does not meet battery pack application requirements because of one of them battery core problem, after this situation occurs, conventionally this module to be changed, reconfigure a module and change.At Development of Electric Vehicles, progressively after scale, because the individual module that above reason changes is more and more, the battery of changing has formed a large amount of stocks, has caused substantial contribution to overstock.Simultaneously new change the module that gets on because and in battery pack the inconsistent meeting of other modules cause and do not mate, after operation a period of time, still need to change module, increase workload to maintenance department, cause human cost to increase.
Summary of the invention
The object of the present invention is to provide a kind of lithium ion battery to change the preparation method of module.
Object of the present invention can be achieved through the following technical solutions:
Lithium ion battery is changed a preparation method for module, said method comprising the steps of:
(1) obtain fail battery group distance travelled parameter;
(2) obtain except the capacity information that needs to change other modules battery module monomer battery core average size in computing module;
(3) obtain except the internal resistance information that needs to change other modules battery module the average internal resistance of n monomer battery core in computing module;
(4) in the battery core under being replaced, select same model, capacity is middle 1～1.03 times of calculating monomer battery core average size of step (2), internal resistance is middle 0.8～1.2 times of calculating the average internal resistance of monomer battery core of step (3), the distance travelled of selected monomer battery core is 0.8～1.2 times of step (1) distance travelled parameter, the monomer battery core that self discharge is qualified, according to former module assembling mode composition module.
Selected monomer battery core moon self-discharge rate is less than 4%.
In step (4), selected battery core is the abnormal battery core of itself nothing in the battery pack changing.
Beneficial effect of the present invention: the present invention adopts in the battery pack changing because of other monomer battery core problems and itself is prepared into module for problem battery replacing without abnormal and the close battery core of distance travelled, ensure on the one hand the consistency of battery pack, reduce on the other hand the battery core stock who changes, reduced battery use cost simultaneously.
figure of description
Fig. 1 is voltage consistency analysis figure after replacing module.
Fig. 2 is voltage consistency analysis figure after replacing module.
Fig. 3 is voltage consistency analysis figure after changing with new battery core Knockdown block.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment mono-
Taking the parallel connection of 4 monomer battery cores as a module is as example, concrete steps are as follows:
1, examine and seize to such an extent that this battery pack distance travelled parameter is 35100Km by reading instrument;
2, obtain except the capacity information that needs to change other modules battery module by test cabinet partial volume, calculating its mean value is 42Ah, and the capacity of single battery core is 10.5Ah;
3, obtain except the internal resistance information that needs to change other modules battery module by the measurement of internal resistance instrument, calculating its mean value is 1.875 m Ω, and in module, the average internal resistance of 4 monomer battery cores is 7.5 m Ω;
4, select the monomer battery core of same model, capacity is between 10.5～10.8Ah, is specifically respectively 10.5Ah, 10.6Ah, 10.6Ah, 10.7Ah; Internal resistance is between 6.0～9.0 m Ω, is specifically respectively 6.8m Ω, 7.2m Ω, 8.1m Ω, 6.5m Ω, distance travelled is 28100～42100Km, is specifically respectively 37523Km, 37523Km, 4012Km, 4012Km; Month self-discharge rate is respectively 2.3%, 2.5%, 3.0%, 2.7%; According to former module assembling mode composition module.
Fig. 1 is voltage consistency analysis figure after replacing module, and empty electric state extreme difference is less than 100mV, and as shown in Figure 1, consistency is good.
Embodiment bis-
Taking the parallel connection of 4 monomer battery cores as a module is as example, concrete steps are as follows:
1, examine and seize to such an extent that this battery pack distance travelled parameter is 64500Km by reading instrument;
2, obtain except the capacity information that needs to change other modules battery module by test cabinet partial volume, calculating its mean value is 39.2Ah, and the capacity of single battery core is 9.8Ah;
3, obtain except the internal resistance information that needs to change other modules battery module by the measurement of internal resistance instrument, calculating its mean value is 2.13 m Ω, and in module, the average internal resistance of 4 monomer battery cores is 8.52 m Ω;
4, select the monomer battery core of same model, capacity is between 9.8～10.09Ah, is specifically respectively 9.8Ah, 9.9Ah, 9.9Ah, 10.0Ah; Internal resistance is between 6.82～10.22 m Ω, is specifically respectively 8.6m Ω, 9.2m Ω, 8.7m Ω, 9.5m Ω, distance travelled is 51600～77400Km, is specifically respectively 66303Km, 66303Km, 58721Km, 58721Km; Month self-discharge rate is respectively 1.6%, 1.7%, 2.0%, 1.3%; According to former module assembling mode composition module.
Fig. 2 is voltage consistency analysis figure after replacing module, and empty electric state extreme difference is less than 100mV, and as shown in Figure 2, consistency is good.
Embodiment tri-
Taking 4 new battery core parallel connections of monomer as a module is as example, concrete steps are as follows:
1, examine and seize to such an extent that this battery pack distance travelled parameter is 38500Km by reading instrument;
2, obtain except the capacity information that needs to change other modules battery module by test cabinet partial volume, calculating its mean value is 40Ah, and the capacity of single battery core is 10.0Ah;
3, obtain except the internal resistance information that needs to change other modules battery module by the measurement of internal resistance instrument, calculating its mean value is 1.75 m Ω, and in module, the average internal resistance of 4 monomer battery cores is 7.0 m Ω;
4, the new battery core of monomer of selecting same model, capacity is respectively 10.7Ah, 10.8Ah, 10.7Ah, 10.7Ah; Internal resistance for being respectively 6.4m Ω, 6.3m Ω, 6.7m Ω, 6.5m Ω, distance travelled is 0Km; Month self-discharge rate is respectively 2.3%, 2.1%, 2.0%, 2.6%; According to former module assembling mode composition module.
Fig. 3 is voltage consistency analysis figure after replacing module, and empty electric state extreme difference is greater than 250mV, and as shown in Figure 3, consistency is poor.
Claims (3)
1. lithium ion battery is changed a preparation method for module, it is characterized in that, said method comprising the steps of:
(1) obtain fail battery group distance travelled parameter;
(2) obtain except the capacity information that needs to change other modules battery module monomer battery core average size in computing module;
(3) obtain except the internal resistance information that needs to change other modules battery module the average internal resistance of n monomer battery core in computing module;
(4) in the battery core under being replaced, select same model, capacity is middle 1～1.03 times of calculating monomer battery core average size of step (2), internal resistance is middle 0.8～1.2 times of calculating the average internal resistance of monomer battery core of step (3), the distance travelled of selected monomer battery core is 0.8～1.2 times of step (1) distance travelled parameter, the monomer battery core that self discharge is qualified, according to former module assembling mode composition module.
2. lithium ion battery according to claim 1 is changed the preparation method of module, it is characterized in that, selected monomer battery core moon self-discharge rate is less than 4%.
3. lithium ion battery according to claim 1 is changed the preparation method of module, it is characterized in that, in step (4), selected battery core is the abnormal battery core of itself nothing in the battery pack changing.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410320447.7A CN104091974A (en) | 2014-07-07 | 2014-07-07 | Preparation method of lithium ion battery replacement module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410320447.7A CN104091974A (en) | 2014-07-07 | 2014-07-07 | Preparation method of lithium ion battery replacement module |
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| CN104091974A true CN104091974A (en) | 2014-10-08 |
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| CN201410320447.7A Pending CN104091974A (en) | 2014-07-07 | 2014-07-07 | Preparation method of lithium ion battery replacement module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106891762A (en) * | 2017-02-21 | 2017-06-27 | 河南豫清新能源产业有限公司 | A kind of accumulator of electric car replaces dead battery method in safeguarding |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103081213A (en) * | 2010-06-24 | 2013-05-01 | 丰田自动车株式会社 | Battery management system, battery management apparatus, method of reusing battery, and information communication terminal apparatus |
| CN103522994A (en) * | 2013-10-28 | 2014-01-22 | 国家电网公司 | Automatic group optimization system for power battery boxes in EV battery swap stations and operating method thereof |
| CN103682490A (en) * | 2013-12-30 | 2014-03-26 | 合肥国轩高科动力能源股份公司 | Repair method for multiple parallel lithium ion battery modules |
-
2014
- 2014-07-07 CN CN201410320447.7A patent/CN104091974A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103081213A (en) * | 2010-06-24 | 2013-05-01 | 丰田自动车株式会社 | Battery management system, battery management apparatus, method of reusing battery, and information communication terminal apparatus |
| CN103522994A (en) * | 2013-10-28 | 2014-01-22 | 国家电网公司 | Automatic group optimization system for power battery boxes in EV battery swap stations and operating method thereof |
| CN103682490A (en) * | 2013-12-30 | 2014-03-26 | 合肥国轩高科动力能源股份公司 | Repair method for multiple parallel lithium ion battery modules |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106891762A (en) * | 2017-02-21 | 2017-06-27 | 河南豫清新能源产业有限公司 | A kind of accumulator of electric car replaces dead battery method in safeguarding |
| CN106891762B (en) * | 2017-02-21 | 2017-12-26 | 河南豫清新能源产业有限公司 | A kind of accumulator of electric car replaces dead battery method in safeguarding |
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| CB02 | Change of applicant information |
Address after: 230000 Yaohai Industrial Zone, Hefei New District, Anhui, No. D weft Road, No. 7 Applicant after: Gotion High-tech Co., Ltd. Address before: 230000 Yaohai Industrial Zone, Hefei New District, Anhui, No. D weft Road, No. 7 Applicant before: Hefei Guoxuan High-Tech Power Energy Co.,Ltd. |
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| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141008 |
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| RJ01 | Rejection of invention patent application after publication |