CN106848446A - A kind of method and device for detecting lithium battery micro-short circuit point - Google Patents
A kind of method and device for detecting lithium battery micro-short circuit point Download PDFInfo
- Publication number
- CN106848446A CN106848446A CN201611231295.9A CN201611231295A CN106848446A CN 106848446 A CN106848446 A CN 106848446A CN 201611231295 A CN201611231295 A CN 201611231295A CN 106848446 A CN106848446 A CN 106848446A
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- Prior art keywords
- test
- doubtful
- short dot
- barrier film
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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
- H01M10/4285—Testing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
The invention discloses a kind of method and device for detecting lithium battery micro-short circuit point.Wherein, methods described includes：Lithium battery is disassembled, the doubtful short dot in barrier film is found out；Barrier film is cleaned and toasts, so that electrolyte volatilizees completely；Metal tabs are sticked in the doubtful short dot both sides of barrier film, metal tabs are respectively coupled to the both positive and negative polarity of Insulation Resistance Tester, the voltage of regulation Insulation Resistance Tester test tests out the insulaion resistance of doubtful short dot；The size of the insulating resistance value according to each doubtful short dot for testing out, judges whether it is short dot.Through the above way, the present invention can accurately judge the true micro-short circuit point of battery, for the micro-short circuit analysis and improvement of battery provide reliable basis.
Description
Technical field
The present invention relates to battery detecting technical field, more particularly to a kind of method and dress for detecting lithium battery micro-short circuit point
Put.
Background technology
Lithium ion battery is high due to energy density, and security is good and the characteristics of low stain, is widely used in mobile phone, flat
On plate computer, digital and electric tool.In lithium ion battery production process, because the impurity in raw material and processing procedure are controlled
It is not in place, can cause there is impurity particle in battery, there is internal micro-short circuit so as to cause battery.Due to battery pole piece with every
The diversity and complexity of the film way of contact, cause many barrier films that micro-damage occurs and pass through traditional voltage-withstand test or arteries and veins
Rush test and be difficult to effectively detection, while leakage rate and voltage that the means of testing of routine mainly investigates electric current in charging process decline
Amplitude converted, investigate the insulating capacity of battery with this, the change that the above method occurs to inside battery in test process
Change cannot catch immediately, therefore substantially belong to a kind of dependence static parameter and judge the process of dynamic change, it is difficult to accomplish right
Have occurred and that condition of instant error of the battery of internal micro-short circuit in test process is effectively caught.
The content of the invention
The present invention solves the technical problem of a kind of method and device for detecting lithium battery micro-short circuit point is provided, can
The accurate true micro-short circuit point for judging battery, for the micro-short circuit analysis and improvement of battery provide reliable basis.
In order to solve the above technical problems, one aspect of the present invention is：There is provided a kind of detection lithium battery micro- short
The method of waypoint, including：Lithium battery is disassembled, the doubtful short dot in barrier film is found out；Barrier film is cleaned and toasts, so that electrolysis
Liquid volatilizees completely；Metal tabs are sticked in the doubtful short dot both sides of barrier film, metal tabs are respectively coupled to megger test
The both positive and negative polarity of instrument, the voltage of regulation Insulation Resistance Tester test, tests out the insulaion resistance of doubtful short dot；According to testing out
Each doubtful short dot insulating resistance value size, judge whether it is short dot.
Wherein, when each doubtful short dot for testing out insulating resistance value be less than 1 megaohm when, then judge doubtful short dot as
Micro-short circuit point.
Wherein, the voltage of regulation Insulation Resistance Tester test is 20 volts.
Wherein, when cleaning barrier film, cleaning fluid used is ethanol, and scavenging period is 15~30 minutes.
Wherein, when toasting barrier film, baking temperature used is 50-80 degrees Celsius, and baking time is 30~60 minutes.
Wherein, baking temperature used is 60 degrees Celsius.
Wherein, the two sides of doubtful short dot is sticked the conducting resinl of biadhesive respectively, the another side of conducting resinl sticks gold
Category lug.
In order to solve the above technical problems, another technical solution used in the present invention is：There is provided a kind of detection lithium battery micro-
The device of short dot, including：Insulation Resistance Tester, for testing the insulaion resistance of micro-short circuit point, and outputs test result；Survey
Examination connecting line, for connecting megger test module and test sample；Test fixture, for fixed test connecting line and test
Sample.
Wherein, megger test module includes Insulation Resistance Tester.
Wherein, test fixture includes the pad of a pair of opposing, is sticked in pad test sample using conducting resinl, institute
State that pad surface is smooth and well conducting, its size is 1-5 square centimeters.
Above scheme, first disassembles lithium battery, finds out the doubtful short dot in barrier film；Then barrier film is cleaned and toasts,
So that electrolyte volatilizees completely；Then metal tabs are sticked in the doubtful short dot both sides of barrier film, metal tabs is respectively coupled to
The both positive and negative polarity of Insulation Resistance Tester, the voltage of regulation Insulation Resistance Tester test, tests out the insulated electro of doubtful short dot
Resistance；And the size of the insulating resistance value according to each doubtful short dot for testing out, judge whether it is short dot, it is the micro- of battery
Short-circuit analysis and improvement provide reliable basis, and can accurately judge the true micro-short circuit point of battery.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the implementation method of method one of present invention detection lithium battery micro-short circuit point；
Fig. 2 is the structural representation of lithium battery；
Fig. 3 is the structural representation of the implementation method of device one of present invention detection lithium battery micro-short circuit point；
Fig. 4 is the structural representation of the device detection barrier film micro-short circuit point of present invention detection lithium battery micro-short circuit point.
Specific embodiment
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is carried out clearly
Chu, it is fully described by, it is clear that described implementation method is only a part of implementation method of the invention, rather than whole realities
Apply mode.Based on the implementation method in the present invention, those of ordinary skill in the art institute under the premise of creative work is not made
The every other implementation method for obtaining, belongs to the scope of protection of the invention.
Fig. 1 is referred to, Fig. 1 is the schematic flow sheet of the implementation method of method one of present invention detection lithium battery micro-short circuit point.
If it is noted that there is substantially the same result, the method for the present invention is not limited with the flow order shown in Fig. 1.Such as Fig. 1
Shown, the method comprises the following steps：
S101：Lithium battery is disassembled, the doubtful short dot in barrier film is found out.
As shown in Fig. 2 Fig. 2 is the structural representation of lithium battery.Lithium battery in Fig. 2 includes positive pole 21, negative pole 22, electrolysis
Liquid 23 and barrier film 24.Wherein, barrier film 24 is a kind of very fine and the very strong film isolated material of permeability.Alternatively,
Barrier film 24 can be polyethylene film isolated material.Wherein, positive pole 21 is cobalt acid lithium (or nickle cobalt lithium manganate, LiMn2O4, phosphoric acid
Ferrous lithium etc.) and aluminium foil composition current collector, the current collector group that negative pole 22 is made up of graphitized carbon material and Copper Foil
Into electrolyte 23 is organic electrolyte solution.
Wherein, the big lithium battery of self discharge is disassembled, the doubtful short dot in barrier film is found out.Alternatively, doubtful short dot
It is usually expressed as one or more stains.
S102：Barrier film is cleaned and toasts, so that electrolyte volatilizees completely.
Wherein, when cleaning barrier film, cleaning fluid used is ethanol, and scavenging period is 15~30 minutes.
Wherein, when toasting barrier film, baking temperature used is 50-80 degrees Celsius, and baking time is 30~60 minutes.
Specifically, baking temperature used is 60 degrees Celsius.
S103：Metal tabs are sticked in the doubtful short dot both sides of barrier film, metal tabs are respectively coupled into insulaion resistance surveys
The both positive and negative polarity of instrument is tried, the voltage of regulation Insulation Resistance Tester test tests out the insulaion resistance of doubtful short dot.
Wherein, the voltage of regulation Insulation Resistance Tester test is 20 volts.
Wherein, the two sides of doubtful short dot is sticked the conducting resinl of biadhesive respectively, the another side of conducting resinl sticks gold
Category lug.
S104：The size of the insulating resistance value according to each doubtful short dot for testing out, judges whether it is short dot.
Wherein, when each doubtful short dot for testing out insulating resistance value be less than 1 megaohm when, then judge doubtful short dot as
Micro-short circuit point.
In present embodiment, lithium battery is first disassembled, find out the doubtful short dot in barrier film；Then clean and toast isolation
Film, so that electrolyte volatilizees completely；Then metal tabs are sticked in the doubtful short dot both sides of barrier film, metal tabs is connected respectively
To the voltage that the both positive and negative polarity of Insulation Resistance Tester, regulation Insulation Resistance Tester are tested, the insulation of doubtful short dot is tested out
Resistance；And the size of the insulating resistance value according to each doubtful short dot for testing out, judge whether it is short dot, it is battery
Micro-short circuit is analyzed and improved and provides reliable basis, and can accurately judge the true micro-short circuit point of battery.
Fig. 3 is referred to, Fig. 3 is the structural representation of the implementation method of device one of present invention detection lithium battery micro-short circuit point.
The device 30 of the detection lithium battery micro-short circuit point is the detection means in above-mentioned implementation method, and the detection means 30 includes：Insulation
Resistance meter 31, test connecting line 32 and test fixture 33.
Insulation Resistance Tester 31 is used to test the insulaion resistance of micro-short circuit point, and outputs test result；
Test connecting line 32 is used to connect megger test module and test sample；
Test fixture 33 is used for fixed test connecting line and test sample.
Wherein, megger test module includes Insulation Resistance Tester 31.
Wherein, test fixture 33 includes the pad of a pair of opposing, is sticked in pad test sample using conducting resinl,
Pad surface is smooth and well conducting, and its size is 1-5 square centimeters.
As shown in figure 4, the device that Fig. 4 is present invention detection lithium battery micro-short circuit point detects the structure of barrier film micro-short circuit point
Schematic diagram.Test fixture 33 is sticked in pad test sample barrier film 24 by conducting resinl 41, and test connecting line 32 is connected absolutely
Edge resistance meter 31 and test sample barrier film 24, the test voltage of Insulation Resistance Tester 31 are adjusted to 20 volts, test specimens
The insulaion resistance of each doubtful short dot on product barrier film 24.If the insulating resistance value of each doubtful short dot for testing out is less than
At 1 megaohm, then judge that doubtful short dot is micro-short circuit point.
In present embodiment, test connecting line and test sample are fixed using test fixture, connected using connecting line is tested
Megger test module and test sample, the insulaion resistance of micro-short circuit point is tested using Insulation Resistance Tester, and exports survey
Test result, can accurately judge the true micro-short circuit point of battery, for the micro-short circuit analysis and improvement of battery provide reliable basis.
Embodiments of the present invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (10)
1. it is a kind of detect lithium battery micro-short circuit point method, it is characterised in that including：
Lithium battery is disassembled, the doubtful short dot in barrier film is found out；
The barrier film is cleaned and toasts, so that electrolyte volatilizees completely；
Metal tabs are sticked in doubtful short dot both sides described in the barrier film, the metal tabs are respectively coupled to insulaion resistance
The both positive and negative polarity of tester, adjusts the voltage of the Insulation Resistance Tester test, tests out the insulated electro of the doubtful short dot
Resistance；
The size of the insulating resistance value according to each described doubtful short dot for testing out, judges whether it is short dot.
2. method according to claim 1, it is characterised in that
When each described doubtful short dot for testing out insulating resistance value be less than 1 megaohm when, then judge the doubtful short dot as
Micro-short circuit point.
3. method according to claim 1, it is characterised in that
The voltage for adjusting the Insulation Resistance Tester test is 20 volts.
4. method according to claim 1, it is characterised in that
When cleaning the barrier film, cleaning fluid used is ethanol, and scavenging period is 15~30 minutes.
5. method according to claim 1, it is characterised in that
When toasting the barrier film, baking temperature used is 50-80 degrees Celsius, and baking time is 30~60 minutes.
6. method according to claim 5, it is characterised in that
Baking temperature used is 60 degrees Celsius.
7. method according to claim 1, it is characterised in that
The two sides of the doubtful short dot sticked the conducting resinl of biadhesive respectively, the another side of the conducting resinl sticks described
Metal tabs.
8. it is a kind of detect lithium battery micro-short circuit point device, it is characterised in that including：
Insulation Resistance Tester, for testing the insulaion resistance of micro-short circuit point, and outputs test result；
Test connecting line, for connecting the megger test module and test sample；
Test fixture, for fixing test connecting line and the test sample.
9. device according to claim 8, it is characterised in that：
The megger test module includes Insulation Resistance Tester.
10. device according to claim 8, it is characterised in that：
The test fixture includes the pad of a pair of opposing, is sticked in the pad test sample using conducting resinl
On, the pad surface is smooth and well conducting, and its size is 1-5 square centimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611231295.9A CN106848446A (en) | 2016-12-28 | 2016-12-28 | A kind of method and device for detecting lithium battery micro-short circuit point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611231295.9A CN106848446A (en) | 2016-12-28 | 2016-12-28 | A kind of method and device for detecting lithium battery micro-short circuit point |
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| Publication Number | Publication Date |
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| CN106848446A true CN106848446A (en) | 2017-06-13 |
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| CN201611231295.9A Pending CN106848446A (en) | 2016-12-28 | 2016-12-28 | A kind of method and device for detecting lithium battery micro-short circuit point |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728068A (en) * | 2017-09-24 | 2018-02-23 | 合肥国轩高科动力能源有限公司 | A kind of short-circuit resistance method of testing |
| CN108196155A (en) * | 2017-12-25 | 2018-06-22 | 桑德集团有限公司 | It is a kind of for detect battery roll core whether short circuit method |
| CN111707965A (en) * | 2020-05-26 | 2020-09-25 | 欣旺达电动汽车电池有限公司 | Lithium ion battery short circuit test method |
| CN111722129A (en) * | 2020-06-01 | 2020-09-29 | 国联汽车动力电池研究院有限责任公司 | Battery micro short circuit detection method and system |
| CN113093056A (en) * | 2021-06-08 | 2021-07-09 | 蜂巢能源科技有限公司 | Method for determining position of short-circuit point in electric core |
| CN113419190A (en) * | 2021-06-15 | 2021-09-21 | 安捷利（番禺）电子实业有限公司 | Method for detecting micro short circuit after laser cutting and application thereof |
| CN113484780A (en) * | 2021-06-02 | 2021-10-08 | 苏州领湃新能源科技有限公司 | Method for testing short-circuit resistance in soft package battery |
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| CN204269730U (en) * | 2014-11-26 | 2015-04-15 | 武汉恒盛兴电力自动化有限公司 | A kind of Insulation Resistance Tester |
| CN105811031A (en) * | 2016-05-13 | 2016-07-27 | 合肥国轩高科动力能源有限公司 | Repairing method for battery with slightly-damaged diaphragm |
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2016
- 2016-12-28 CN CN201611231295.9A patent/CN106848446A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204269730U (en) * | 2014-11-26 | 2015-04-15 | 武汉恒盛兴电力自动化有限公司 | A kind of Insulation Resistance Tester |
| CN105811031A (en) * | 2016-05-13 | 2016-07-27 | 合肥国轩高科动力能源有限公司 | Repairing method for battery with slightly-damaged diaphragm |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728068A (en) * | 2017-09-24 | 2018-02-23 | 合肥国轩高科动力能源有限公司 | A kind of short-circuit resistance method of testing |
| CN108196155A (en) * | 2017-12-25 | 2018-06-22 | 桑德集团有限公司 | It is a kind of for detect battery roll core whether short circuit method |
| CN111707965A (en) * | 2020-05-26 | 2020-09-25 | 欣旺达电动汽车电池有限公司 | Lithium ion battery short circuit test method |
| CN111707965B (en) * | 2020-05-26 | 2022-08-09 | 欣旺达电动汽车电池有限公司 | Lithium ion battery short circuit test method |
| CN111722129A (en) * | 2020-06-01 | 2020-09-29 | 国联汽车动力电池研究院有限责任公司 | Battery micro short circuit detection method and system |
| CN111722129B (en) * | 2020-06-01 | 2023-08-15 | 国联汽车动力电池研究院有限责任公司 | Battery micro-short circuit detection method and system |
| CN113484780A (en) * | 2021-06-02 | 2021-10-08 | 苏州领湃新能源科技有限公司 | Method for testing short-circuit resistance in soft package battery |
| CN113093056A (en) * | 2021-06-08 | 2021-07-09 | 蜂巢能源科技有限公司 | Method for determining position of short-circuit point in electric core |
| CN113419190A (en) * | 2021-06-15 | 2021-09-21 | 安捷利（番禺）电子实业有限公司 | Method for detecting micro short circuit after laser cutting and application thereof |
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Application publication date: 20170613 |