CN112630021A - Method for testing battery core sleeve label - Google Patents
Method for testing battery core sleeve label Download PDFInfo
- Publication number
- CN112630021A CN112630021A CN202011345293.9A CN202011345293A CN112630021A CN 112630021 A CN112630021 A CN 112630021A CN 202011345293 A CN202011345293 A CN 202011345293A CN 112630021 A CN112630021 A CN 112630021A
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- test block
- test
- type
- label
- testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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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
Abstract
The invention relates to the technical field of batteries, and discloses a method for testing a battery core sleeve label, which is used for testing the brittle fracture of the battery core sleeve label and comprises the following steps: dividing the electric core sleeve mark into a plurality of test blocks; dividing the test blocks into a first type test block and a second type test block; and respectively installing the first type test block and the second type test block into a tension tester to perform tension test at a preset speed until the first type test block and the second type test block are broken, and respectively recording the elongation of the first type test block and the elongation of the second type test block when the first type test block and the second type test block are broken. By the scheme, the test method of the battery core sleeve label can quantitatively evaluate the fracture brittleness of the battery core sleeve label, provides a basis and a method for incoming material quality control, and is favorable for ensuring the impact resistance of the battery core sleeve label.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a method for testing a battery core sleeve label.
Background
The electric core sleeve mark can be abraded in the manufacturing process and the using process of a client, and the impact resistance of the electric core sleeve mark can be influenced to a certain extent. However, at present, no method for testing the core sleeve label is available in the process of manufacturing the battery core, and quantitative evaluation on the fracture brittleness of the core sleeve label cannot be performed, so that quality control personnel cannot perform quality control on raw material incoming materials and the installed core sleeve label, and the impact resistance of the installed core sleeve label cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a test method of a battery core sleeve mark, which can quantitatively evaluate the fracture brittleness of the battery core sleeve mark, provides a basis and a method for incoming material quality control, and is favorable for ensuring the impact resistance of the battery core sleeve mark.
In order to achieve the purpose, the invention adopts the following technical scheme:
a test method of a battery core sleeve label is used for testing the brittle fracture of the battery core sleeve label, and comprises the following steps: dividing the electric core sleeve mark into a plurality of test blocks; dividing the test blocks into a first type test block and a second type test block; and respectively installing the first type of test block and the second type of test block into a tension tester to perform tension test at a preset speed until the first type of test block and the second type of test block are broken, and respectively recording the elongation of the first type of test block and the elongation of the second type of test block when the first type of test block and the second type of test block are broken.
As a preferred scheme of the test method for the battery core sleeve label, the first type test block is the test block with the crease, and the second type test block is the test block without the crease.
As a preferable scheme of the method for testing the cell label, when the cell label is divided into the test blocks, the portions of the cell label wrapping the head and the tail of the cell are removed.
As a preferred scheme of the test method of the battery core label, the test block is rectangular.
As a preferred scheme of the test method of the battery core sleeve label, the sizes of a plurality of test blocks are equal, the length range of the test blocks is 25mm-35mm, and the width range of the test blocks is 8mm-12 mm.
As a preferred scheme of the test method of the battery core label, the preset speed range is 70mm/min-80 mm/min.
As an optimal scheme of the test method of the battery core sleeve label, the tensile force and the extension length are recorded at preset interval time while the tensile force test is carried out on the test block.
As an optimal scheme of the test method of the battery core sleeve label, two ends of the test block are respectively clamped at the upper end and the lower end of the tension tester.
As a preferred scheme of the test method of the battery core sleeve label, the test block is vertically placed in the tensile tester.
As a preferred scheme of the method for testing the battery core sleeve label, before the battery core sleeve label is divided into a plurality of test blocks, a certain number of the battery core sleeve labels are required to be randomly extracted from a battery to be tested to serve as a test sample.
The invention has the beneficial effects that:
the invention provides a method for testing a battery core sleeve label, which is used for testing the brittle fracture of the battery core sleeve label and comprises the following steps: dividing the electric core sleeve mark into a plurality of test blocks; dividing the test blocks into a first type test block and a second type test block; and respectively installing the first type test block and the second type test block into a tension tester to perform tension test at a preset speed until the first type test block and the second type test block are broken, and respectively recording the elongation of the first type test block and the elongation of the second type test block when the first type test block and the second type test block are broken. By the method, the test method of the battery core sleeve label can quantitatively evaluate the fracture brittleness of the battery core sleeve label by using the elongation at break of the test block, can provide a basis and a method for incoming material quality control, and is favorable for ensuring the impact resistance of the battery core sleeve label.
Drawings
Fig. 1 is a flowchart of a method for testing a battery cell label according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the test method of the electric core sleeve mark provided by the invention is further explained by the specific embodiment in combination with the attached drawings.
The invention provides a test method of a battery core sleeve label, as shown in fig. 1, the test method of the battery core sleeve label comprises the following steps:
and S1, dividing the electric core sleeve into a plurality of test blocks.
And S2, dividing the test blocks into a first type test block and a second type test block.
And S3, respectively installing the first type test block and the second type test block into a tension tester, carrying out tension test at a preset speed until the first type test block and the second type test block are broken, and respectively recording the elongation of the first type test block and the elongation of the second type test block when the first type test block and the second type test block are broken.
By the method, the test method of the battery core sleeve label can quantitatively evaluate the fracture brittleness of the battery core sleeve label by using the elongation at break of the test block, can provide a basis and a method for incoming material quality control, and is favorable for ensuring the impact resistance of the battery core sleeve label.
In this embodiment, the method for testing the battery cell label specifically includes the following steps:
and S0, randomly drawing a certain number of cell sleeve labels in the battery to be detected as a test sample.
That is, in order to detect the impact resistance of the battery label in a certain batch of batteries, a certain number of cell labels in the batch of batteries need to be randomly extracted as test samples to be tested, so that the characteristics of the battery label in the test sample can represent the characteristics of the battery label in the batch of batteries.
And S1, dividing the electric core sleeve into a plurality of test blocks.
That is, the extracted cell label in the battery is divided into a plurality of test blocks by using a tool such as a caliper, a cutter, or the like. Because electric core cover mark will wrap up electric core head and afterbody tightly, electric core cover mark can take place to warp here for the disconnected fragility of electric core cover mark at this place has changed, and it can influence the disconnected fragility of test piece. Therefore, when the core label is divided into the test blocks, the core label needs to be removed to wrap the head and tail of the core.
In this embodiment, the shape of the battery core sleeve mark is rectangular, so that the connection between the subsequent test block and the tensile tester is facilitated. Specifically, the length range of the test block is 25mm-35mm, the width range is 8mm-12mm, and the test block with the size range can be conveniently connected to a tension tester. Preferably, in this embodiment, the length of the test block is 30mm, and the width is 10mm, so that both ends of the test block can be conveniently connected to the tensile tester, and can bear a certain tensile force, which is convenient for the tensile tester to measure the tensile force and the extension length of the test block.
It should be noted that, the sizes of the plurality of test blocks are all set to be equal, so as to avoid the influence on the test result due to the difference of the sizes of the test blocks.
And S2, dividing the test blocks into a first type test block and a second type test block.
That is, the test blocks are classified into a first type test block and a second type test block according to a preset classification standard. The preset classification criteria are: whether the block has a crease or not is tested. That is, the first type of test block is a test block having creases, and the second type of test block is a test block having no creases. It should be noted that, the crease is generated in the manufacturing process of the battery core sleeve label due to process reasons, and cannot be avoided, the color is relatively deep, and the fracture brittleness of the battery core sleeve label can be influenced to a certain extent, so that the test block needs to be divided into a first type test block and a second type test block for respective testing.
And S3, respectively installing the first type test block and the second type test block into a tension tester, carrying out tension test at a preset speed until the first type test block and the second type test block are broken, and respectively recording the elongation of the first type test block and the elongation of the second type test block when the first type test block and the second type test block are broken.
Namely, the first type test block and the second type test block are respectively installed in a tension tester to respectively carry out tension test. The method comprises the steps of clamping two ends of a first type test block (a second type test block) at the upper end and the lower end of a tension tester respectively, then carrying out tension test on the first type test block (the second type test block) at a preset speed until the first type test block (the second type test block) is broken, recording the elongation of the first type test block (the second type test block) when the first type test block (the second type test block) is broken, and evaluating the brittle fracture performance of the electric core sleeve mark by taking the elongation when the first type test block (the second type test block) is broken as a quantitative index. Preferably, the first type of test block (the second type of test block) is vertically arranged in the tension tester and is kept vertical in the test process, so that the tension tester is prevented from generating an oblique component force on the first type of test block (the second type of test block) to influence the accuracy of the test structure.
Preferably, the preset speed range is 70mm/min-80mm/min, and in the present embodiment, the preset speed is 75 mm/min. That is to say, the tensile tester tests the tensile force of the first type test block (the second type test block) at the speed of 75mm/min, which is beneficial to ensuring the accuracy of the tensile test result.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A test method of a battery core sleeve label is used for testing the brittle fracture of the battery core sleeve label and is characterized by comprising the following steps:
dividing the electric core sleeve mark into a plurality of test blocks;
dividing the test blocks into a first type test block and a second type test block;
and respectively installing the first type of test block and the second type of test block into a tension tester to perform tension test at a preset speed until the first type of test block and the second type of test block are broken, and respectively recording the elongation of the first type of test block and the elongation of the second type of test block when the first type of test block and the second type of test block are broken.
2. The method for testing the battery cell label according to claim 1, wherein the first type of test block is the test block with the crease, and the second type of test block is the test block without the crease.
3. The method of claim 1, wherein the portion of the core label that wraps the head and tail of the cell is removed during the dividing of the core label into the test pieces.
4. The method for testing the battery cell label of claim 1, wherein the test block is rectangular.
5. The method for testing the electric core suit mark of claim 4, wherein a plurality of the test blocks are equal in size, and the length of the test blocks ranges from 25mm to 35mm, and the width of the test blocks ranges from 8mm to 12 mm.
6. The method for testing the battery cell label of claim 1, wherein the preset speed range is 70mm/min to 80 mm/min.
7. The method for testing the battery cell label according to claim 1, wherein the tensile force and the elongation length are recorded at preset intervals while the tensile force test is performed on the test block.
8. The method for testing the battery cell sleeve label according to claim 1, wherein two ends of the test block are respectively clamped at the upper end and the lower end of the tensile tester.
9. The method for testing an electrical core label according to claim 8, wherein the test block is vertically placed in the tensile tester.
10. The method for testing the battery core label according to claim 1, wherein before the battery core label is divided into the plurality of test blocks, a certain number of the battery core labels are randomly extracted from the battery to be tested as the test sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345293.9A CN112630021B (en) | 2020-11-25 | 2020-11-25 | Test method for battery cell sleeve label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345293.9A CN112630021B (en) | 2020-11-25 | 2020-11-25 | Test method for battery cell sleeve label |
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| Publication Number | Publication Date |
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| CN112630021A true CN112630021A (en) | 2021-04-09 |
| CN112630021B CN112630021B (en) | 2023-05-30 |
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| CN202011345293.9A Active CN112630021B (en) | 2020-11-25 | 2020-11-25 | Test method for battery cell sleeve label |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000146788A (en) * | 1998-11-05 | 2000-05-26 | Nippon Steel Corp | Measuring method for fracture position in tensile test |
| JP2014199759A (en) * | 2013-03-29 | 2014-10-23 | 株式会社フジシールインターナショナル | Label for battery sheath |
| CN107340182A (en) * | 2016-09-29 | 2017-11-10 | 哈尔滨理工大学 | Weigh the measuring method of soft package lithium battery punching press packaging bag security |
| CN109187190A (en) * | 2018-10-10 | 2019-01-11 | 东莞市创明电池技术有限公司 | A kind of tensile resistance test method of lithium battery foil |
| WO2019050344A1 (en) * | 2017-09-07 | 2019-03-14 | 주식회사 엘지화학 | Apparatus and method for evaluating electrode embrittlement |
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| CN110715852A (en) * | 2019-08-29 | 2020-01-21 | 浙江鑫宙竹基复合材料科技有限公司 | Method for testing anti-fracture performance of lap joint of bamboo split roll |
-
2020
- 2020-11-25 CN CN202011345293.9A patent/CN112630021B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000146788A (en) * | 1998-11-05 | 2000-05-26 | Nippon Steel Corp | Measuring method for fracture position in tensile test |
| JP2014199759A (en) * | 2013-03-29 | 2014-10-23 | 株式会社フジシールインターナショナル | Label for battery sheath |
| CN107340182A (en) * | 2016-09-29 | 2017-11-10 | 哈尔滨理工大学 | Weigh the measuring method of soft package lithium battery punching press packaging bag security |
| WO2019050344A1 (en) * | 2017-09-07 | 2019-03-14 | 주식회사 엘지화학 | Apparatus and method for evaluating electrode embrittlement |
| CN109187190A (en) * | 2018-10-10 | 2019-01-11 | 东莞市创明电池技术有限公司 | A kind of tensile resistance test method of lithium battery foil |
| CN110282213A (en) * | 2019-07-20 | 2019-09-27 | 扬州朗玛科技有限公司 | A kind of trademark jacketing method and set device for mark |
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Non-Patent Citations (1)
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| 实用技工技术教材编写组编: "《现代包装材料与技术应用》", 30 April 2008, 广州：广东科技出版社 * |
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| CN112630021B (en) | 2023-05-30 |
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