CN103050739A - Pairing method of lithium ion battery - Google Patents
Pairing method of lithium ion battery Download PDFInfo
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- CN103050739A CN103050739A CN2011103130592A CN201110313059A CN103050739A CN 103050739 A CN103050739 A CN 103050739A CN 2011103130592 A CN2011103130592 A CN 2011103130592A CN 201110313059 A CN201110313059 A CN 201110313059A CN 103050739 A CN103050739 A CN 103050739A
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- lithium ion
- ion battery
- matching method
- voltage
- capacity
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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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Abstract
The invention relates to the field of lithium batteries, and discloses a pairing method of a lithium ion battery. A lithium ion battery, a capacity grading cabinet and an intelligent module are included, wherein the capacity grading cabinet is connected with the intelligent module, and the lithium ion battery is placed in the capacity grading cabinet. The pairing method comprises the steps of: placing the lithium ion battery in the capacity grading cabinet, and connecting the capacity grading cabinet with the intelligent module; discharging the lithium ion battery in the capacity grading cabinet at a constant current of 1-10 times of a capacity value to a final voltage, and recording a capacity value and a voltage value of the lithium ion battery in a discharge process by the intelligent module; recording a capacity value and a voltage value of the lithium ion battery on an inflection point on a discharge curve by the intelligent module; and pairing batteries with a voltage difference value or inclination difference value of 0.1-5 percent on the inflection point by the intelligent module. A battery pack paired by adopting the pairing method is good in consistency and high in whole pairing efficiency.
Description
Technical field
The present invention relates to the lithium battery field, relate in particular to a kind of matching method of lithium ion battery.
Background technology
Lithium ion battery has progressively expanded the Large-sized Communication instruments such as stand-by power supply, electric tool and electric bicycle, electric automobile to from the mobile phone digital product at present, its battery series-parallel connection number is from single several, tens or even the hundreds of of developing into, therefore become very important in the bottleneck principle of the consistency between battery, in the poor battery pack of consistency, whole Battery pack is subject to the poorest battery cell of performance.The poor battery pack that gets of consistency, gently then performance is not good, affects the consumer and uses; Heavy then machine can't work.Thereby the pairing of consistency of battery pack is particularly important, and this has just created condition for the development of battery matching technology.
Traditional matching technology is to carry out the pairing of battery according to basic parameters such as the voltage of battery, capacity, internal resistances under the condition of static state.This way can only accomplish the battery of high conformity under static conditions is matched, and its defective is truly to reflect battery consistency in use.In order more exactly the battery of high conformity to be matched, we must adopt in the battery use procedure it both had been the dynamic matching method of pairing.
Summary of the invention
The invention provides a kind of matching method of lithium ion battery, the method is a kind of high-quality, high efficiency matching method.
The matching method of a kind of lithium ion battery provided by the invention comprises lithium ion battery, grading system and intelligent object.
Described grading system is connected with described intelligent object;
Described lithium ion battery places in the described grading system.
Preferably, lithium ion battery on grading system with the electric current constant-current discharge of 1～10 times of capability value to final voltage.
Preferably, intelligent object records capability value and the magnitude of voltage in the described lithium ion battery discharge process.
Preferably, intelligent object records capability value and the magnitude of voltage at flex point place on the described lithium ion battery discharge curve.
Preferably, flex point is that battery discharge direction of a curve angle changes more than ± 30 °.
Preferably, the quantity of flex point is greater than 3 (comprising starting point and terminal point).
Preferably, intelligent object carries out the lithium ion battery pairing according to voltage difference or the slope difference of described flex point.
Preferably, voltage difference or slope difference are 0.1～5%.
Therefore, use the technical scheme of the embodiment of the invention, with the lithium ion battery grading system of packing into, grading system is connected with intelligent object; Again with the lithium ion battery in the grading system with the electric current constant-current discharge of 1～10 times of capability value to final voltage, capability value and the magnitude of voltage of intelligent object record lithium ion battery discharge process; Intelligent object is recorded capability value and the magnitude of voltage at flex point place on the lithium ion battery discharge curve; Intelligent object is that 0.1～5% battery matches with flex point place voltage difference or slope difference.The consistency of battery pack that the inventive method is matched out is good, and the efficient of whole pairing work is also high.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, does not consist of to improper restriction of the present invention, in the accompanying drawings:
Fig. 1 is the schematic diagram of the matching method of lithium ion battery of the present invention.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
Embodiment 1:
With the 5ah lithium ion battery with 5～50A(5～10 times capacity ratio) current discharge, obtain discharge curve as shown in Figure 1; According to the feature of direction of a curve angle change more than ± 30 °, find out flex point such as U1, U3 at curve, U5 and corresponding abscissa X1, X3, X5(capacity or time thereof).
With the magnitude of voltage at same abscissa X1, X3, X5 place on the different curves and the intelligent object of slope value typing software programming, in 0.1～5%, carry out classification with difference, for example, from low to high, curve in voltage phase difference 0.5% scope is same rank, and the battery that the curve of ad eundem is corresponding just can match.
The above technical scheme that the embodiment of the invention is provided is described in detail, used specific case herein principle and the execution mode of the embodiment of the invention are set forth, the explanation of above embodiment is only applicable to help to understand the principle of the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, all will change on embodiment and range of application, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. the matching method of a lithium ion battery is characterized in that comprising: lithium ion battery, grading system and intelligent object; Described grading system is connected with described intelligent object; Described lithium ion battery places in the described grading system.
2. the matching method of lithium ion battery according to claim 1, it is characterized in that described lithium ion battery on grading system with the electric current constant-current discharge of 1～10 times of capability value to final voltage.
3. the matching method of lithium ion battery according to claim 1 is characterized in that described intelligent object records capability value and the magnitude of voltage in the described lithium ion battery discharge process.
4. the matching method of lithium ion battery according to claim 3 is characterized in that described intelligent object records capability value and the magnitude of voltage (comprising starting point and terminal point) at flex point place on the described lithium ion battery discharge curve.
5. the matching method of lithium ion battery according to claim 4 is characterized in that described flex point is that battery discharge direction of a curve angle changes more than ± 30 °.
6. the matching method of lithium ion battery according to claim 5 is characterized in that the quantity of described flex point is greater than 3 (comprising starting point and terminal point).
7. the matching method of lithium ion battery according to claim 4 is characterized in that described intelligent object carries out the lithium ion battery pairing according to voltage difference or the slope difference of described flex point.
8. the matching method of lithium ion battery according to claim 7 is characterized in that described voltage difference or slope difference are 0.1～5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103130592A CN103050739A (en) | 2011-10-14 | 2011-10-14 | Pairing method of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103130592A CN103050739A (en) | 2011-10-14 | 2011-10-14 | Pairing method of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
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| CN103050739A true CN103050739A (en) | 2013-04-17 |
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| CN2011103130592A Pending CN103050739A (en) | 2011-10-14 | 2011-10-14 | Pairing method of lithium ion battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218267A (en) * | 2014-07-30 | 2014-12-17 | 浙江超威创元实业有限公司 | Capacity-grading and set-matching method of lithium ion battery |
| CN110707382A (en) * | 2019-10-18 | 2020-01-17 | 瑞浦能源有限公司 | Lithium ion battery matching method |
| CN117092524A (en) * | 2023-09-12 | 2023-11-21 | 宁夏宝丰昱能科技有限公司 | Capacity calibration method, terminal equipment and readable storage medium |
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| JP2002228728A (en) * | 2001-02-01 | 2002-08-14 | Gs-Melcotec Co Ltd | Method, program and device for testing charge and discharge of secondary battery, and recording medium recording the same program |
| CN101615687A (en) * | 2009-07-14 | 2009-12-30 | 广州丰江电池新技术股份有限公司 | Method for intelligently reading data from battery formation device |
| CN101924247A (en) * | 2010-07-29 | 2010-12-22 | 江苏双登集团有限公司 | Lithium ion battery grouping method |
| CN102170013A (en) * | 2011-03-21 | 2011-08-31 | 深圳市沃特玛电池有限公司 | Device for formation and capacity-grading of battery |
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2011
- 2011-10-14 CN CN2011103130592A patent/CN103050739A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002228728A (en) * | 2001-02-01 | 2002-08-14 | Gs-Melcotec Co Ltd | Method, program and device for testing charge and discharge of secondary battery, and recording medium recording the same program |
| CN101615687A (en) * | 2009-07-14 | 2009-12-30 | 广州丰江电池新技术股份有限公司 | Method for intelligently reading data from battery formation device |
| CN101924247A (en) * | 2010-07-29 | 2010-12-22 | 江苏双登集团有限公司 | Lithium ion battery grouping method |
| CN102170013A (en) * | 2011-03-21 | 2011-08-31 | 深圳市沃特玛电池有限公司 | Device for formation and capacity-grading of battery |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218267A (en) * | 2014-07-30 | 2014-12-17 | 浙江超威创元实业有限公司 | Capacity-grading and set-matching method of lithium ion battery |
| CN104218267B (en) * | 2014-07-30 | 2016-06-01 | 浙江超威创元实业有限公司 | A kind of lithium ion battery divides appearance method for group matching |
| CN110707382A (en) * | 2019-10-18 | 2020-01-17 | 瑞浦能源有限公司 | Lithium ion battery matching method |
| CN117092524A (en) * | 2023-09-12 | 2023-11-21 | 宁夏宝丰昱能科技有限公司 | Capacity calibration method, terminal equipment and readable storage medium |
| CN117092524B (en) * | 2023-09-12 | 2024-03-22 | 宁夏宝丰昱能科技有限公司 | Capacity calibration method, terminal equipment and readable storage medium |
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