Lithium-ion battery for forced internal short-circuit test and preparation method thereof

A lithium electronic battery and a technology for testing, which are applied in the field of lithium electronic battery for compulsory internal short test and its preparation, can solve the problems of difficult to find the location, volatile electrolyte leakage and the like

Active Publication Date: 2012-10-17
SHENZHEN BAK POWER BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the lithium-ion battery used in this safety test method is involved in the short-circuit metal part

Method used

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  • Lithium-ion battery for forced internal short-circuit test and preparation method thereof
  • Lithium-ion battery for forced internal short-circuit test and preparation method thereof
  • Lithium-ion battery for forced internal short-circuit test and preparation method thereof

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Embodiment Construction

[0035] The specific embodiments of the present invention will be described below mainly in conjunction with the accompanying drawings.

[0036] see figure 1 and figure 2 The lithium-ion battery 100 for the forced internal short-circuit test of the first embodiment includes a lithium-ion battery core 110 , a short-circuit metal piece 120 , a positive electrode tab 130 , a negative electrode tab 140 and a sealing packaging film 150 .

[0037] The lithium electronic battery core 110 is a square lithium electronic battery core, which has been removed from the outer package and fully charged. The lithium electronic battery core 110 includes a separator 112 , a positive electrode 114 , a negative electrode (not shown) and an aluminum foil 116 . The separator 112 is spaced between the positive electrode 114 and the negative electrode to prevent the lithium-ion battery core 110 from short circuiting. The positive electrode is formed by coating the aluminum foil 116 with a conducti...

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PUM

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Abstract

The invention discloses a lithium-ion battery for a forced internal short-circuit test. The lithium-ion battery comprises a lithium-ion battery core, a short-circuit metal part, a positive pole tab, a negative pole tab and a sealing packaging film. The lithium-ion battery core comprises a positive pole, a negative pole and a diaphragm sandwiched between the positive pole and the negative pole. An outer packing of the lithium-ion battery core is removed and the lithium-ion battery core is fully charged. The short-circuit metal part is drawn into the lithium-ion battery core. The positive pole tab and the negative pole tab are welded to the lithium-ion battery core and are electrically connected respectively to the positive pole and the negative pole. The sealing packaging film seals the lithium-ion battery core and a vacuum-pumping process is carried out so that the a convex imprint of the short-circuit metal part is formed on the sealing packaging film. The lithium-ion battery for a forced internal short-circuit test has the advantages that the sealing packaging film is used for sealing packaging; the leakage of an electrolyte is avoided; and after vacuum treatment, a convex imprint of the short-circuit metal part is formed on the sealing packaging film and the short-circuit metal part is located at an obvious position. The invention also discloses a preparation method of the lithium-ion battery for a forced internal short-circuit test.

Description

【Technical field】 [0001] The invention relates to a lithium electronic battery and a preparation method thereof, in particular to a lithium electronic battery for a forced internal short test and a preparation method thereof. 【Background technique】 [0002] In recent years, lithium-ion batteries, as a new force in the battery industry, have received more and more attention from the industry. Whether it is used in ordinary small communication devices such as mobile phones, or in mobile devices such as digital products, or in power equipment such as electric tools and pure battery vehicles, the use of lithium-ion batteries is getting larger and larger. more popular with consumers. [0003] With the birth of lithium-ion batteries, safety issues have always been concerned by people. As a battery manufacturing enterprise and research institution, it is very important and necessary to establish strict safety testing methods and inspection standards. Japan is leading the world i...

Claims

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Application Information

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IPC IPC(8): H01M10/0525H01M10/42H01M2/02H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 田启友郑荣鹏张亮
Owner SHENZHEN BAK POWER BATTERY CO LTD
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