Manufacturing method of soft-packed cylindrical battery

A technology for cylindrical batteries and manufacturing methods, applied in primary batteries, secondary battery manufacturing, secondary batteries, etc., can solve the problems of consuming manpower and material resources, cumbersome processes, etc., and achieve the goals of improving production efficiency, simplifying procedures, and reducing production costs Effect

Inactive Publication Date: 2019-05-21
CHONGQING VDL ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The packaging process involves top and side seals, one seal, and two seal

Method used

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  • Manufacturing method of soft-packed cylindrical battery
  • Manufacturing method of soft-packed cylindrical battery
  • Manufacturing method of soft-packed cylindrical battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The invention provides a method for manufacturing a soft-packed cylindrical battery, comprising the following steps:

[0032] (1) Please refer to Figure 1 ~ Figure 4 , stamping the aluminum-plastic film 1, so that the upper part of the aluminum-plastic film 1 forms a first accommodation pit 12, and the lower part forms a second accommodation pit 11;

[0033] (2) Please refer to Figure 7 and Figure 10 , the aluminum-plastic film 1 is cut along the middle of the upper part and the lower part, the aluminum-plastic film 1 is cut into a first aluminum-plastic film 13 and a second aluminum-plastic film 14, and the first accommodating pit 12 is located in the first aluminum-plastic film 13 On, the second accommodating pit 11 is located on the second aluminum-plastic film 14;

[0034] (3) Please refer to Figure 5 , placing the upper part of the battery core body 31 of the wound battery 3 into the first accommodation pit 12, and placing the lower part of the battery core...

Embodiment 2

[0041] The difference between the second embodiment and the first embodiment is that the angle between the two tabs 32 of the electric core 3 is 90°. Of course, the angle between the two tabs 32 in other embodiments is also It can be any value between 0°-180°. It is only necessary to adjust the angle between the two tabs 32 according to actual needs before encapsulation.

[0042] Other steps in the second embodiment are the same as those in the first embodiment, and will not be repeated here.

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PUM

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Abstract

The invention discloses a manufacturing method of a soft-packed cylindrical battery. According to the method, a first accommodating pit and a second accommodating pit are formed by performing one-timestamping on an aluminum plastic film, and the appearance is standardized. After the aluminum plastic film is punched and cut, a wound core or a laminated core is placed in the first accommodating pitand the second accommodating pit, when electrolyte is injected, electrolyte containing a sulfur element additive is used, and the electrolyte absorbs a generated gas during a formation process. Therefore, no airbag is needed in a pit punching process, and a secondary sealing process is omitted, thereby simplifying the process, improving the production efficiency and reducing the production cost.The preparation of the cylindrical battery can be completed by completing the liquid injection, top sealing and side sealing in a dry environment.

Description

technical field [0001] The invention relates to the field of batteries, and more specifically, relates to a method for manufacturing a soft-packed cylindrical battery. Background technique [0002] At present, basically all manufacturers will encounter two problems in the process of making soft-pack batteries. First, the aluminum-plastic film cannot be stamped and formed at one time, and it can be punched and formed at one time, resulting in irregular product shapes and low product qualification rates. ; Second, secondary packaging technology is used when sealing. Among them, the number of punching pits is two, corresponding to the roll core placement area and the airbag bag respectively. The battery will generate a certain amount of gas during the formation process. The function of the air bag is mainly to collect the gas during the formation process. This gas will be pumped out in the second sealing process. The packaging process involves top and side seals, one seal, an...

Claims

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Application Information

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IPC IPC(8): H01M6/00H01M10/04H01M10/0563H01M10/0567H01M6/16H01M2/02H01M50/107
CPCY02E60/10Y02P70/50
Inventor 周显茂
Owner CHONGQING VDL ELECTRONICS
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