CN108896923A - Device and method for testing overcurrent capacity of current collector of lithium battery - Google Patents
Device and method for testing overcurrent capacity of current collector of lithium battery Download PDFInfo
- Publication number
- CN108896923A CN108896923A CN201810691980.2A CN201810691980A CN108896923A CN 108896923 A CN108896923 A CN 108896923A CN 201810691980 A CN201810691980 A CN 201810691980A CN 108896923 A CN108896923 A CN 108896923A
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- CN
- China
- Prior art keywords
- collector
- test
- lithium battery
- battery
- current collector
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 63
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 30
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title abstract description 6
- 239000002390 adhesive tape Substances 0.000 claims abstract description 6
- 239000005030 aluminium foil Substances 0.000 claims description 12
- 238000010998 test method Methods 0.000 claims description 10
- 239000005955 Ferric phosphate Substances 0.000 claims description 5
- 229940032958 ferric phosphate Drugs 0.000 claims description 5
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 5
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 5
- 239000011888 foil Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a device and a method for testing the overcurrent capacity of a current collector of a lithium battery, which comprises a testing device and the current collector, wherein an insulating adhesive tape is wrapped on the outer side of the current collector, the distance between the insulating adhesive tape and the two ends of the current collector is more than 10mm, a first electrode of a load battery is connected with a first testing end of a testing cabinet, a second electrode of the load battery is connected with one end of the current collector, the other end of the current collector is connected with a second testing end of the testing cabinet, a thermocouple is pasted on the insulating adhesive tape, and the thermocouple is connected with a temperature tester of the testing cabinet through a connecting wire. According to the device and the method for testing the overcurrent capacity of the current collector of the lithium battery, disclosed by the invention, the overcurrent capacity of the current collector is analyzed and judged by monitoring the surface temperature of the current collector under different currents, and the temperature rise test of the current collector can be completed by utilizing common lithium battery testing equipment.
Description
Technical field
The invention belongs to technical field of lithium ion, and in particular to a kind of lithium battery collector conveyance capacity test device
And test method.
Background technique
Lithium ion battery has the characteristics such as energy density is high, has extended cycle life, and is widely used in fields such as electric cars.
Lithium battery is the critical component of electric car, directly affects the properties of electric car, and security performance is particularly important.
In lithium battery, collector, for adhering to positive or negative pole active material, plays as substrate and generates active material
Electric current collect, externally carry out High-current output effect.General aluminium foil is as plus plate current-collecting body, and copper foil is as negative pole currect collecting
Body.When charging and discharging lithium battery, electric current flows through collector meeting heat production, increases battery temperature.Temperature is excessively high, and electrolyte can decompose production
Gas, diaphragm can generate contraction, or even decompose, and influence security performance.Currently, mainly assessing collector production by simulation calculation
Heat, actual test difficulty are larger.
Summary of the invention
The purpose of the present invention is to provide a kind of lithium battery collector conveyance capacity test device and test methods, pass through prison
Different electric current next part flow surface temperature are surveyed, to analyze, determine the conveyance capacity of collector.
To achieve the above object, the invention adopts the following technical scheme：
A kind of lithium battery collector conveyance capacity test device, including test device, collector, the outside package of the collector
There is insulating tape, distance of the insulating tape apart from collector both ends is greater than 10mm, loads the first electrode and test of battery
First test lead of cabinet connects, and one end of the second electrode and collector that load battery connects, the other end of collector and test
Second test lead of cabinet connects, and thermocouple is posted on the insulating tape, and the thermocouple passes through the temperature of connecting line and test cabinet
Spend tester connection.
Further, the afflux body length is 30-100mm, width 15-50mm.
Further, the load battery is ferric phosphate lithium cell, and capacity is greater than 30Ah, meets 2C or more charge and discharge.
Further, distance of the adhesive tape apart from collector both ends is greater than 10mm.
A kind of test method of lithium battery collector conveyance capacity test device, includes the following steps：
（1）Collector is cut into strip, with alcohol clean surface；
（2）Along collector length direction pasted with high temperature-resistant insulating tape；
（3）Collector one end is connect with the first electrode of load battery, the second electrode and the collector other end point of battery
It is not connected with the test lead of test cabinet, is formed into a loop；
（4）Thermocouple is attached to collector tape surface, connects moisture recorder；
（5）Constant-current charge or electric discharge are carried out to load battery using different electric currents, terminates to test when aluminium foil occurs abnormal, remember
Record test data.
Further, the collector is metal foil or composite foil.
Further, the afflux body length is 30-100mm, width 15-50mm.
Further, the constant-current charge or the electric current of electric discharge are 1A-20A, gradient 1A.
Further, the load battery is ferric phosphate lithium cell, and capacity is greater than 30Ah, meets 2C or more charge and discharge.
As shown from the above technical solution, lithium battery collector conveyance capacity test device of the present invention and test side
Method is crossed and monitors different electric current next part flow surface temperature, to analyze, determine the conveyance capacity of collector, utilizes common lithium electricity
Pond test equipment can complete the temperature rise test of collector, and this method is fairly simple, and feasibility is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of test device of the present invention；
Fig. 2 is the present invention to aluminium foil conveyance capacity test result figure.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing：
As shown in Figure 1, a kind of lithium battery collector conveyance capacity test device of the present embodiment, including including test device 1, collection
Fluid 3, the outside of the collector 3 are enclosed with insulating tape 4, and distance of the insulating tape 4 apart from collector both ends is greater than 10mm, bear
The first test lead of the first electrode D and test cabinet that carry battery 2 connect, and load the second electrode C of battery 2 and the end B of collector 3
Connection, the other end A of collector 3 are connect with the second test lead of test cabinet 1, thermocouple 5 are posted on insulating tape 4, the heat
Galvanic couple 5 is connect by connecting line with the temperature measuring device of test cabinet 1.
A kind of lithium battery collector conveyance capacity test method of the present embodiment, specifically includes following steps：
S1：It will be cut into wide 20mm with a thickness of 12 μm of aluminium foils, the strip of long 60mm, and with alcohol clean surface；
S2：Along aluminium foil length direction pasted with high temperature-resistant insulating tape 4, insulating tape 4 is 15mm with a distance from aluminium foil both ends；
S3：By aluminium foil one end B and ferric phosphate lithium cell（30Ah）Electrode C connection, battery electrode D, aluminium foil other end A respectively with survey
It tries cabinet 1 to be connected, forming circuit；
S4：Thermocouple 5 is attached to the surface of high-temperature insulation adhesive tape 4, and is connected by connecting line and the moisture recorder of test cabinet 1
It connects；
S5：Using different electric currents（2A,3A,4A,5A,6A,7A）Constant-current discharge is carried out to load battery, until exception occurs in aluminium foil
When terminate to test, record test data.
The present embodiment to 12 μm of aluminium foil conveyance capacities, test results are shown in figure 2, as can be seen from Figure 2 the aluminium foil generate heat
Few, temperature rise is low, and when using 5A electric current, about 3 DEG C of surface temperature rise, when using 7A electric current, surface temperature rise is lower than 8 DEG C.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (9)
1. a kind of lithium battery collector conveyance capacity test device, it is characterised in that：Including test device, collector, the collection
Insulating tape is enclosed on the outside of fluid, distance of the insulating tape apart from collector both ends is greater than 10mm, loads battery
One end of the connection of first test lead of first electrode and test cabinet, the second electrode and collector that load battery connects, collector
The other end and the second test lead of test cabinet connect, post thermocouple on the insulating tape, the thermocouple passes through connection
Line and the temperature measuring device of test cabinet connect.
2. lithium battery collector conveyance capacity test device according to claim 1, it is characterised in that：The collector is long
Degree is 30-100mm, width 15-50mm.
3. lithium battery collector conveyance capacity test device according to claim 1, it is characterised in that：The load battery
For ferric phosphate lithium cell, capacity is greater than 30Ah, meets 2C or more charge and discharge.
4. lithium battery collector conveyance capacity test device according to claim 1, it is characterised in that：The adhesive tape distance
The distance at collector both ends is greater than 10mm.
5. a kind of test method of lithium battery collector conveyance capacity test device, it is characterised in that：Include the following steps：
（1）Collector is cut into strip, with alcohol clean surface；
（2）Along collector length direction pasted with high temperature-resistant insulating tape；
（3）Collector one end is connect with the first electrode of load battery, the second electrode and the collector other end point of battery
It is not connected with the test lead of test cabinet, is formed into a loop；
（4）Thermocouple is attached to collector tape surface, connects moisture recorder；
（5）Constant-current charge or electric discharge are carried out to load battery using different electric currents, terminates to test when aluminium foil occurs abnormal, remember
Record test data.
6. the test method of lithium battery collector conveyance capacity test device according to claim 5, it is characterised in that：Institute
Stating collector is metal foil or composite foil.
7. the test method of lithium battery collector conveyance capacity test device according to claim 5, it is characterised in that：Institute
Stating afflux body length is 30-100mm, width 15-50mm.
8. the test method of lithium battery collector conveyance capacity test device according to claim 5, it is characterised in that：Institute
The electric current for stating constant-current charge or electric discharge is 1A-20A, gradient 1A.
9. the test method of lithium battery collector conveyance capacity test device according to claim 5, it is characterised in that：Institute
Stating load battery is ferric phosphate lithium cell, and capacity is greater than 30Ah, meets 2C or more charge and discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810691980.2A CN108896923A (en) | 2018-06-28 | 2018-06-28 | Device and method for testing overcurrent capacity of current collector of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810691980.2A CN108896923A (en) | 2018-06-28 | 2018-06-28 | Device and method for testing overcurrent capacity of current collector of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108896923A true CN108896923A (en) | 2018-11-27 |
Family
ID=64347192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810691980.2A Pending CN108896923A (en) | 2018-06-28 | 2018-06-28 | Device and method for testing overcurrent capacity of current collector of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108896923A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109613439A (en) * | 2018-12-20 | 2019-04-12 | 中兴高能技术有限责任公司 | A kind of detection method and device of conveyance capacity |
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| CN203037828U (en) * | 2013-01-10 | 2013-07-03 | 宁德新能源科技有限公司 | Detection device for lithium ion battery |
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| CN106384854A (en) * | 2016-10-26 | 2017-02-08 | 广东工业大学 | Power battery with inside temperature measuring and heating functions and control method thereof |
| CN106898724A (en) * | 2017-03-06 | 2017-06-27 | 安普能源科技有限公司 | Power battery over-temperature fusing protection technology with strong overcurrent capacity |
| CN206301909U (en) * | 2016-10-26 | 2017-07-04 | 广东工业大学 | It is a kind of can the internal electrokinetic cell for surveying mild heat |
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2018
- 2018-06-28 CN CN201810691980.2A patent/CN108896923A/en active Pending
Patent Citations (7)
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| CN203037828U (en) * | 2013-01-10 | 2013-07-03 | 宁德新能源科技有限公司 | Detection device for lithium ion battery |
| CN103904381A (en) * | 2014-03-07 | 2014-07-02 | 清华大学 | Measurement device for inner temperature of battery |
| CN203983423U (en) * | 2014-05-30 | 2014-12-03 | 合肥国轩高科动力能源股份公司 | Li battery shell cover plate brace and pole overcurrent device for testing temperature rise |
| CN106156464A (en) * | 2015-04-03 | 2016-11-23 | 申智渊 | The temperature rise calculation method of metalwork overcurrent and device |
| CN106384854A (en) * | 2016-10-26 | 2017-02-08 | 广东工业大学 | Power battery with inside temperature measuring and heating functions and control method thereof |
| CN206301909U (en) * | 2016-10-26 | 2017-07-04 | 广东工业大学 | It is a kind of can the internal electrokinetic cell for surveying mild heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109613439A (en) * | 2018-12-20 | 2019-04-12 | 中兴高能技术有限责任公司 | A kind of detection method and device of conveyance capacity |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181127 |