Packaging method of solid-state battery

A solid-state battery and packaging method technology, applied in battery assembly, secondary battery manufacturing, non-aqueous electrolyte storage batteries, etc., can solve problems such as module PACK assembly difficulties, achieve a good installation environment, improve efficiency, improve packaging effects and The effect of packaging efficiency

Active Publication Date: 2019-11-19
ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a packaging method for solid-state batteries, which uses steel-plastic film as the packaging shell for solid-state batteries, which solves the problem of difficult assembly of solid-state battery modules PACK in the later stage, and has the advantages of packaging The advantages of good consistency and high packaging strength improve the performance and safety performance of solid-state batteries

Method used

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  • Packaging method of solid-state battery

Examples

Experimental program
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Effect test

preparation example Construction

[0041] Steel plastic film, its preparation method comprises the steps:

[0042] a. Take SPCE low-carbon steel foil with a thickness of 18 μm, clean its surface with alcohol with a concentration of 92%, and then dry the cleaned SPCE low-carbon steel foil with a hot air blower, and place it for cooling after drying 4min;

[0043] b. Pre-plate a layer of ultra-thin nickel layer on both sides of the surface of SPCE low-carbon steel foil by pulse electroplating process as the iron-nickel bonding layer, and then use DC electroplating process to electroplate a layer thickness on the two outer surfaces of the iron-nickel bonding layer A dull nickel layer of 0.8 μm is used, and then a dark nickel layer with a thickness of 0.4 μm is electroplated on both outer surfaces of the dumb nickel layer by a pulse electroplating process, thereby forming a steel shell 1;

[0044] c. Clean the steel shell 1 with clean water, then dry it with a hot air blower, and let it cool for 7 minutes after dr...

Embodiment 1

[0053] A packaging method for a solid-state battery, comprising the following steps:

[0054] S1. Preheating: Select the steel-plastic film of the above size, soak it in the degreasing agent for 15 minutes, take it out, wash it twice with clean water in the spray room, and dry it in an oven at 80°C. Two steel-plastic films are a group, and two of them are selected for docking. The battery cell of the solid-state battery is placed in the installation cavity 4 formed by the two steel-plastic films. During the docking process, the exhaust pipe 3 is clamped to the two steel Between the plastic films, one end of the exhaust pipe 3 is extended into the installation cavity 4, and the steel-plastic film is preheated by infrared heating, wherein each time the infrared ray is irradiated for 20s and then pauses for 10s, this cycle is repeated 8 times, preheated to 150°C, the PP layer 2 of the steel-plastic film melts.

[0055] S2. Pre-packaging: Set the sealing temperature of the sealin...

Embodiment 2-5

[0059] Embodiments 2-5 adjust the parameters in the encapsulation process on the basis of the method in Embodiment 1. For specific adjustments, see Table 1 below.

[0060] The encapsulation parameter of table 1 embodiment 1-5

[0061]

[0062]

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Abstract

The invention relates to the technical field of packaging of lithium batteries, in particular to a packaging method of a solid-state battery. The method comprises the following steps of: performing pre-heating: selecting two steel-plastic films to be butted for preheating; pre-packaging: setting the packaging temperature of an upper sealing head of a packaging machine to be 185-205 DEG C, settingthe packaging pressure to be 0.15-0.2 MP2, setting the packaging time to be 1-1.5s, and performing pre-packaging of the steel-plastic films; final packaging: setting the packaging temperature of the upper sealing head of the sealing machine to be 185-205 DEG C, setting the packaging pressure to be 0.3-0.4MPa, setting the packaging time to be 3-5s, and performing final packaging for the steel-plastic films; and cold press molding: performing cold press treatment for the steel-plastic films, setting the pressure to be 0.04-0.06MPa cold molding and forming of the steel-plastic films to complete the package of the battery cell of the solid state battery. The packaging method can better coating the battery cell of the solid state battery to improve the use performance and the safety performanceof the solid state battery.

Description

technical field [0001] The invention relates to the technical field of packaging of lithium batteries, in particular to a packaging method for solid-state batteries. Background technique [0002] Lithium batteries have been widely used because of their high energy density, long cycle life, low self-discharge rate, fast charge and discharge, and environmental friendliness. Compared with traditional liquid batteries, solid-state batteries have higher safety and mechanical strength and get more favor from the market. [0003] Battery packaging is a key step in determining the performance of lithium battery cells. Usually, aluminum-plastic film casings of different specifications are punched out by aluminum-plastic film punching machines to package solid-state batteries. However, since the aluminum-plastic film itself is a flexible material, it is not conducive to the module PACK assembly of the solid-state battery in the later stage, resulting in disadvantages such as complex ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M10/04
CPCH01M10/058H01M10/0404Y02E60/10Y02P70/50
Inventor 许晓雄周伟魏引利吴天生蒋阳慧
Owner ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD
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