Packaging method of cylindrical lithium ion battery

A lithium-ion battery and packaging method technology, which is applied to secondary batteries, battery pack parts, non-aqueous electrolyte storage batteries, etc., can solve the problems of high raw material cost, complicated processing process, and high manufacturing cost, and achieve low raw material cost and low processing cost. Simple process and high energy-to-weight ratio

Inactive Publication Date: 2007-07-18
TIANJIN LISHEN BATTERY
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Problems solved by technology

[0002] At present, cylindrical lithium-ion batteries generally use nickel-plated steel shells as battery shells, and the cost of raw materials is high; they need to be packaged through rolling grooves, laser welding, mechanical sealing and other processes, the processing process is complicated, and the manufacturing cost is high; special forms of caps are required As a safety explosion-proof measure; in addition, the steel case increases the weight of the battery and reduces the weight-specific energy of the lithium-ion battery

Method used

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  • Packaging method of cylindrical lithium ion battery

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with the accompanying drawings.

[0009] First, use the aluminum-plastic packaging bag as the battery casing material, as shown in Figure 1, punch out two equal semi-cylindrical shapes 1 and 2 in the middle of one side of the aluminum-plastic packaging bag with a punching die, and then punch out the two semi-cylindrical shapes 1 and 2. After the cylindrical shape is folded in half, it becomes a cylindrical shape (as shown in Figure 2, the semi-cylindrical shapes 1 and 2 are folded in half), and finally the battery poles are assembled into the above-mentioned stamped aluminum-plastic bag shell, which is double-sealed, liquid injected, and drained. Gas, unilateral sealing, and formation processes complete battery packaging.

[0010] The invention adopts an aluminum-plastic packaging bag as the casing of the cylindrical lithium-ion battery, and during the manufacturing process, processes such as rolling g...

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Abstract

The invention disclosed a packaging method for cylinder-type lithium-ion battery, which is implemented by the following steps: first using aluminum-plastic packaging bags as battery casing material, using punch shell mold to make two same columnar semicircle out of the central flank, then folding them to be cylinder, finally loading the battery group into the above shell, and completing battery package through double edge closure, injecting fluid, air bleed, single edge closure, and chemical synthesis. The invention saves roller shafts sealing and laser welding processes, and the corresponding equipment.

Description

technical field [0001] The invention relates to the field of electrical storage products, and more specifically relates to a packaging method for a cylindrical lithium-ion battery. Background technique [0002] At present, cylindrical lithium-ion batteries generally use nickel-plated steel shells as battery shells, and the cost of raw materials is high; they need to be packaged through processes such as rolling grooves, laser welding, and mechanical sealing. The processing process is complicated and the manufacturing cost is high; special forms of caps are required As a safety explosion-proof measure; in addition, the steel casing increases the weight of the battery and reduces the weight-specific energy of the lithium-ion battery. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a packaging method for a cylindrical lithium-ion battery by overcoming the deficiencies in the prior art. [0004] The encapsulation me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/38H01M10/40H01M2/02H01M2/00H01M10/058H01M50/107H01M50/122
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 贾宏涛苏金然陈佳闻
Owner TIANJIN LISHEN BATTERY
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