WO2011026431A1 - 电池隔膜尺寸变化率的测试方法 - Google Patents
电池隔膜尺寸变化率的测试方法 Download PDFInfo
- Publication number
- WO2011026431A1 WO2011026431A1 PCT/CN2010/076556 CN2010076556W WO2011026431A1 WO 2011026431 A1 WO2011026431 A1 WO 2011026431A1 CN 2010076556 W CN2010076556 W CN 2010076556W WO 2011026431 A1 WO2011026431 A1 WO 2011026431A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sample
- change rate
- dimensional change
- testing
- test
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
-
- 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
-
- 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
-
- 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
Definitions
- the invention belongs to the technical field of hybrid vehicle manufacturing, and particularly relates to a testing technology of a lithium ion battery separator used in a hybrid vehicle. Background technique
- the main function of the lithium ion battery separator is to prevent direct electronic contact between the positive and negative electrodes in the battery, ensuring that ions can pass freely.
- the battery separator is a polymer material, long-chain molecules are stretched and frozen during processing. When the activation energy of the molecule is increased, the segment has a certain degree of curl, so that the size of the product is somewhat to some extent.
- the change usually expressed in terms of dimensional change rate (also called dimensional shrinkage). Excessive dimensional change of the battery separator can cause the diaphragm to rupture or the electrode to be exposed, resulting in a short circuit inside the battery. Therefore, it is necessary to accurately measure the dimensional change rate of the battery separator before it is applied to the product to prevent the above. There are currently no mature test methods available. Summary of the invention
- the object of the present invention is to provide a test method for the dimensional change rate of a battery separator to conveniently, quickly and accurately measure the dimensional change rate of the battery separator to ensure the safe use of the lithium ion battery.
- the key to the test method for the dimensional change rate of the battery separator of the present invention is to include the following steps:
- A intercepting the sample on the diaphragm material to be tested
- the sample is placed in the test environment for a predetermined time for testing
- E The sample is taken out from the test environment, and subjected to climate adaptation treatment, and then the final size is measured;
- F The dimensional change rate is calculated according to the measured original size and final size of the sample.
- the sample should be taken from the plane position of the diaphragm material to be tested.
- the predetermined shape described in the above step B is preferably rectangular or circular.
- the climatic adaptation treatment is carried out at 23 ° C to 40 ° C for at least 30 minutes, so as to ensure that the material properties of the sample tend to be stable after being taken out from the test environment, and the measurement error is reduced.
- Figure 1 is a schematic view showing the shape of a battery separator sample of Example 1;
- Fig. 2 is a view showing the shape of a battery separator sample of Example 2. detailed description
- E The sample was taken out from the test environment and placed at 30 ° C for at least 30 minutes for climatic adaptation treatment, and then the final length and final width W 1 were measured ;
- F Calculate the dimensional change rate based on the measured original size and final size of the sample. The formula for calculating the dimensional change rate is as follows:
- Wi The final width after a sample test, in units of (mm).
- Each sample is calculated with the maximum change value. Usually, the arithmetic mean of three samples is taken as the test result, and the positive value indicates shrinkage.
- the sample is cut into a circular shape, and the original diameter of the sample in multiple directions ( ⁇ 1 to ⁇ 5 ) and the corresponding test are tested.
- the final diameter is obtained to obtain the dimensional change rate of the sample in the above plurality of directions.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910192073.4 | 2009-09-04 | ||
| CN200910192073A CN101655363A (zh) | 2009-09-04 | 2009-09-04 | 电池隔膜尺寸变化率的测试方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011026431A1 true WO2011026431A1 (zh) | 2011-03-10 |
Family
ID=41709745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2010/076556 Ceased WO2011026431A1 (zh) | 2009-09-04 | 2010-09-02 | 电池隔膜尺寸变化率的测试方法 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101655363A (zh) |
| WO (1) | WO2011026431A1 (zh) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655363A (zh) * | 2009-09-04 | 2010-02-24 | 奇瑞汽车股份有限公司 | 电池隔膜尺寸变化率的测试方法 |
| CN104280418B (zh) * | 2014-10-29 | 2017-01-11 | 广东省标准化研究院 | 锂离子动力电池内部隔膜安全监测方法 |
| CN105066813A (zh) * | 2015-08-06 | 2015-11-18 | 江苏安瑞达新材料有限公司 | 一种测量聚丙烯微孔膜制程缩幅率的方法 |
| CN108445037A (zh) * | 2018-01-23 | 2018-08-24 | 上海恩捷新材料科技股份有限公司 | 一种薄膜内应力的测试方法 |
| CN110360980B (zh) * | 2019-07-31 | 2020-05-19 | 宁波瑞凌新能源科技有限公司 | 一种薄膜材料热变形测试方法以及测试装置 |
| CN110568004A (zh) * | 2019-10-14 | 2019-12-13 | 上海第二工业大学 | 一种电池隔膜热收缩率的测试方法 |
| CN112129805A (zh) * | 2020-09-24 | 2020-12-25 | 上海紫东尼龙材料科技有限公司 | 一种双向拉伸尼龙膜热收缩的测试方法 |
| CN114323338A (zh) * | 2021-12-24 | 2022-04-12 | 江苏天鹏电源有限公司 | 一种隔膜破孔温度测试方法 |
| CN115078064A (zh) * | 2022-05-10 | 2022-09-20 | 惠州锂威新能源科技有限公司 | 一种锂电池隔膜拉伸回缩率的测试装置及测试方法 |
| CN115574727B (zh) * | 2022-09-30 | 2025-08-26 | 深蓝汽车科技有限公司 | 一种电池极片反弹测试方法及测试装置 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1134491C (zh) * | 1999-02-19 | 2004-01-14 | 东燃化学株式会社 | 聚烯烃微多孔膜及其制造方法 |
| CN1609603A (zh) * | 2004-11-22 | 2005-04-27 | 上海利浦应用科学技术研究所 | 化学纤维热收缩率的图像测试方法及其测试装置 |
| CN101655363A (zh) * | 2009-09-04 | 2010-02-24 | 奇瑞汽车股份有限公司 | 电池隔膜尺寸变化率的测试方法 |
-
2009
- 2009-09-04 CN CN200910192073A patent/CN101655363A/zh active Pending
-
2010
- 2010-09-02 WO PCT/CN2010/076556 patent/WO2011026431A1/zh not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1134491C (zh) * | 1999-02-19 | 2004-01-14 | 东燃化学株式会社 | 聚烯烃微多孔膜及其制造方法 |
| CN1609603A (zh) * | 2004-11-22 | 2005-04-27 | 上海利浦应用科学技术研究所 | 化学纤维热收缩率的图像测试方法及其测试装置 |
| CN101655363A (zh) * | 2009-09-04 | 2010-02-24 | 奇瑞汽车股份有限公司 | 电池隔膜尺寸变化率的测试方法 |
Non-Patent Citations (1)
| Title |
|---|
| "CHINA PLASTICS MODIFICATION TECHNOLOGY CONSULTING NETWORK", POLYETHYLENE SHRINK FILM SHRINKAGE FACTOR TESTING METHOD, 24 October 2008 (2008-10-24), Retrieved from the Internet <URL:http://wwwchemhello.com/consult/html/4763.html> * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101655363A (zh) | 2010-02-24 |
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