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Wetting method of aluminum foil and its wetting pool, and method of manufacturing battery packaging film

A manufacturing method and technology of aluminum foil, which is applied to secondary batteries, battery pack parts, battery boxes/coatings, etc., and can solve the problems that aluminum foil is easily corroded by electrolyte

Active Publication Date: 2016-01-13
深圳市安博瑞新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention mainly provides an aluminum foil infiltration method and its infiltration tank, and a manufacturing method of battery packaging film, which can solve the technical problem that aluminum foil is easily corroded by electrolyte in the prior art

Method used

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  • Wetting method of aluminum foil and its wetting pool, and method of manufacturing battery packaging film
  • Wetting method of aluminum foil and its wetting pool, and method of manufacturing battery packaging film
  • Wetting method of aluminum foil and its wetting pool, and method of manufacturing battery packaging film

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] see figure 1 , figure 1 is a flow chart of a preferred embodiment of the method of soaking aluminum foil of the present invention. The aluminum foil impregnation method is used to deposit a protective layer of chromium metal on the aluminum foil, wherein the aluminum foil is used in the packaging film of the battery. In this embodiment, the soaking method of aluminum foil comprises the following steps:

[0022] Step S11: Flow the reaction solution from top to bottom in the stepped infiltration pool.

[0023] Before step S11, a reaction solution containing chromium ions is prepared so that when the aluminum foil is soaked in the reaction solution, the reaction solution can deposit chromium metal on the surface of the aluminum foil.

[0024] Step S12: soaking the aluminum foil in the reaction solution and moving from a low place to a high pla...

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Abstract

The invention discloses an aluminum foil soaking method, which is used for depositing a chromium metal protective layer on the aluminum foil. The aluminum foil soaking method comprises: flowing a reaction solution from top to bottom in a stepped soaking pool; soaking the aluminum foil in the reaction solution and move from low to high in the immersion pool to deposit a protective layer of chromium metal on the aluminum foil. The invention also discloses a manufacturing method of the battery packaging film and an infiltration tank of the aluminum foil. Through the above method, the present invention can make the metal protective layer evenly deposited on the aluminum foil, thereby preventing the electrolyte in the battery cell from penetrating through the sealant layer to corrode the surface of the aluminum foil, avoiding the detachment of the aluminum foil from the sealant layer, thereby prolonging the life of the packaging film. service life.

Description

technical field [0001] The invention relates to the technical field of battery packaging, in particular to an aluminum foil soaking method, a soaking tank, and a manufacturing method of a battery packaging film. Background technique [0002] Currently, lithium-ion batteries are widely used in portable electronic devices such as mobile phones and electric vehicles (eg, electric vehicles, electric tools), etc. Among them, lithium-ion batteries using flexible packaging films have become the main development direction due to factors such as large capacity, light weight, and good safety. The packaging film of lithium-ion batteries is a composite layer, which is an insulating layer, aluminum foil, and sealing layer from outside to inside. The sealing layer is directly in contact with the electrolyte of lithium-ion battery cells, and the electrolyte is easy to penetrate through the sealing layer and corrode. Aluminum foil, the surface of the aluminum foil is easy to be damaged, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/14C23C18/31H01M50/124H01M50/145
CPCC23C18/31H01M10/0525H01M50/116H01M50/124Y02E60/10
Inventor 石保庆
Owner 深圳市安博瑞新材料科技有限公司
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