Test fixture of acupuncture intensity of battery separator paper

A technology of acupuncture strength and battery diaphragm, which is applied in the field of test jigs for the acupuncture strength of battery diaphragm paper, can solve the problems of high price, complex structure, and unsuitable battery diaphragm paper testing, etc., and achieve the effect of convenient use and simple structure

Inactive Publication Date: 2010-03-31
SHENZHEN BAK BATTERY CO LTD
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  • Abstract
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Problems solved by technology

Although special acupuncture strength testing devices have appeared in foreign markets, their structures are complex and expensive, and there is no special

Method used

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  • Test fixture of acupuncture intensity of battery separator paper

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Embodiment Construction

[0017] Such as figure 1 The illustrated jig for testing the needle penetration strength of a battery separator includes a sensor 2 , a needle assembly, an upper mold 15 and a lower mold 17 .

[0018] The separator paper 16 to be tested is clamped between the lower surface of the upper mold 15 and the upper surface of the lower mold 17 . Both the upper die 15 and the lower die 17 are provided with a plurality of screw holes 14 corresponding to each other, through which the bolts pass through the screw holes 14, so that the upper and lower dies clamp the diaphragm paper 16 and stretch it straight. The center positions on the upper mold 15 and the lower mold 17 are respectively provided with avoidance holes 13, and the positions of the avoidance holes 13 on the upper and lower molds are matched correspondingly so that the needles 12 can pass through the diaphragm paper 16 to be tested. The lower end of the lower die 17 is provided with a fourth needle tie hole, and a fourth need...

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Abstract

The invention discloses a test fixture of acupuncture intensity of battery separator paper, comprising an upper mold and a lower mold which are used for holding the battery separator paper to be tested, the lower mold is fixed on the basis, and the upper mold and the lower mold are respectively provided with avoidance holes, the positions of the avoidance holes are corresponding to each other; thetest fixture further comprises a needle head component and a sensor connected with the needle head component, the sensor is fixedly connected with external testing equipment, the needle head component is provided with a needle head which corresponding to the positions of the avoidance holes, so as to avoid from piercing the separator paper to be tested at the positions of the avoidance holes; theneedle head component comprises a connecting piece, and a sensor adaptor and an acupuncture connector which are respectively connected at two ends of the connecting piece. The test fixture can be assembled on the existing tensile tester, the acupuncture intensity of the separator paper is test by utilizing the function of compression action of the tensile tester; the structure of the test fixtureis simple and the usage thereof is convenient.

Description

technical field [0001] The invention relates to a jig, in particular to a jig for testing the acupuncture strength of battery separator paper. Background technique [0002] Separator paper is one of the important components of lithium-ion batteries, and its mechanical strength is an important index for evaluating separator paper. In the process of battery production, the separator paper needs to go through processes such as handling, cutting, and winding. During this process, some dust or particles will be adsorbed on the surface of the separator paper, which will be easily punctured in the shaping and flattening of the subsequent process. Separator paper causes a short circuit, increases the defective assembly rate in the assembly workshop, and even causes micro-short circuits in some cells, which will lead to safety accidents in the hands of consumers. Therefore, the mechanical strength of battery separator paper is very important. In the current technology, domestic man...

Claims

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Application Information

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IPC IPC(8): G01N3/04
Inventor 王伟强邹晓兵张性双王驰伟
Owner SHENZHEN BAK BATTERY CO LTD
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