Low-pressure hot-melting and injection-molding assembly process for polymer lithium ion battery

A lithium-ion battery and assembly process technology, applied in battery pack parts, non-aqueous electrolyte batteries, electrolyte battery manufacturing and other directions, can solve problems such as large dimensional tolerance, battery overflow, irregular shape, etc., to improve the appearance rate of good products Effect

Inactive Publication Date: 2010-12-15
TIANJIN LISHEN BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the irregular shape of polymer lithium-ion batteries and large dimensional tolerances, polymer lithium-ion mobile phone batteries after injection molding will have more serious glue overflow problems than square batteries. The appearance of batteries has always been a headache for lithium battery manufacturers. The problem

Method used

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  • Low-pressure hot-melting and injection-molding assembly process for polymer lithium ion battery
  • Low-pressure hot-melting and injection-molding assembly process for polymer lithium ion battery
  • Low-pressure hot-melting and injection-molding assembly process for polymer lithium ion battery

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0013] As shown in the drawings, the process of the present invention is to put the polymer lithium-ion battery cell welded with the protective plate into the plastic frame; then, perform low-pressure hot-melt injection molding on it to form the polymer lithium-ion battery semi-finished product 4; The upper and lower surfaces of the semi-finished lithium ion battery 4 are respectively pasted with stainless steel sheet 2 and stainless steel sheet 6, and the stainless steel sheet 2, stainless steel sheet 6 and the body of the semi-finished polymer lithium ion battery 4 are respectively connected with double-sided adhesive tape 3 and double-sided adhesive tape 5 ; Finally, label 1 on the outside of the stainless steel sheet. The thickness of the stainless steel sheet is 0.05mm. There are two asymmetric bottom corners on the stainless steel sheet, that is,...

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Abstract

The invention discloses a low-pressure hot-melting and injection-molding assembly process for a polymer lithium ion battery, which comprises the following steps of: first encapsulating a polymer lithium ion battery cell welded with a protective plate into a plastic frame; then performing low-pressure hot-melting and injection-molding to form a polymer lithium ion battery semi-finished product; next pasting a stainless steel wafer on the upper and lower surfaces of the polymer lithium ion battery semi-finished product respectively, and connecting the stainless steel wafers and a polymer lithium ion battery semi-finished product body by using double faced adhesive tapes; and finally attaching labels to the outside of the stainless steel wafer. Through the process, the appearance of the polymer mobile phone battery manufactured by low-pressure hot-melting and injection-molding technology is more attractive, while the yield is improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing lithium-ion batteries for household appliances, in particular to a low-pressure hot-melt injection molding assembly process for polymer lithium-ion batteries. Background technique [0002] Polymer lithium-ion batteries, due to their higher safety and higher mass energy density, have become more and more popular in the industry and customers. At present, polymer lithium-ion batteries are increasingly used in mobile phone batteries. The traditional low-pressure hot-melt injection molding technology is one of the technologies for making polymer lithium-ion mobile phone batteries. However, due to the irregular shape of polymer lithium-ion batteries and large dimensional tolerances, polymer lithium-ion mobile phone batteries after injection molding will have more serious glue overflow problems than square batteries. The appearance of batteries has always been a headache for lithium battery manuf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M2/02H01M50/103
CPCY02E60/10Y02P70/50
Inventor 李相涛张银峰
Owner TIANJIN LISHEN BATTERY
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