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Method for packaging battery with polymer battery core sheathed by steel shell

A battery packaging and polymer technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of safety performance to be improved, complex battery packaging process, high battery cost, and achieve reliable battery safety performance, low battery cost, The effect of preventing force sag

Active Publication Date: 2012-09-19
SUNWODA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some lithium-ion polymer batteries are packaged by low-pressure injection molding process. The battery packaging process is complicated, the battery cost is high, and the safety performance needs to be improved.

Method used

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  • Method for packaging battery with polymer battery core sheathed by steel shell
  • Method for packaging battery with polymer battery core sheathed by steel shell
  • Method for packaging battery with polymer battery core sheathed by steel shell

Examples

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Embodiment Construction

[0019] The present invention will be explained in more detail below with reference to the accompanying drawings.

[0020] In the present invention, Figure 1 to Figure 6 It is a schematic explanation of each step of the present invention.

[0021] The invention provides a method for encapsulating a polymer battery cell with a steel shell, comprising the following steps:

[0022] 1. On the basis of the positive electrode 12 and the negative electrode 11 of the existing cell, a nickel sheet (14, 13) is welded, and the non-welded parts of the positive electrode 12 of the cell 1 and the nickel sheets 14 and 13 of the negative electrode 11 are insulated with high temperature. tape around the insulation, leaving the welded part (see figure 1 );

[0023] 2. Put the cell 1 into the thin-walled steel shell 2, and inject an appropriate amount of silica gel to fix the cell 1 (see figure 2 );

[0024] 3. Using the PCB bracket positioning hole 21 on the thin-walled steel shell 2 as t...

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Abstract

The invention relates to a method for packaging a battery with a polymer battery core sheathed by a steel shell, comprising the following steps: welding an additional nickel piece on the basis of an anode and a cathode of the exiting battery core, and using high temperature insulating glue paper for coating non-welding parts of the anode and the cathode of the battery core for insulation and preserving a welding part; installing the battery core in a thin-wall steel shell, and injecting proper silica gel to fix the battery core; regarding a PCB bracket locating hole on the steel shell as an assembling standard, assembling a PCB bracket into the locating hole, and blocking a locating part on the PCB bracket in the PCB bracket locating hole; welding a PCB component with the welding part preserved in the first step; assembling a front lid of the battery on the PCB component and using glue for fixing; fixing a rear lid of the battery at the rear side of the thin-wall steel shell by glue, and then coating the semi-finished goods of the battery with trademarks. The method has the advantages of simple packaging technique and strong operation performance; and the battery prepared by the method has smaller volume, larger capacity density, reliable safety performance and relatively lower cost.

Description

technical field [0001] The invention relates to a battery encapsulation method of a steel shell sheathing a polymer electric core. Background technique [0002] At present, most lithium-ion polymer batteries are packaged with plastic shells or plastic shells with steel sheets. After the battery is packaged, the battery volume is still large, and the battery capacity density is relatively small. Some lithium-ion polymer cells are packaged by low-pressure injection molding process, which has complex battery packaging process, high battery cost and safety performance to be improved. SUMMARY OF THE INVENTION [0003] The technical problem solved by the present invention is to provide a battery encapsulation method with a polymer battery core set in a steel shell. The battery produced by the method has the characteristics of high battery capacity density, low battery cost and high safety performance. [0004] The technical scheme of the present invention is to provide a batter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/38H01M10/40
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 赵红丹
Owner SUNWODA ELECTRONICS
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