Power lithium battery tab thermal composite molding process

A composite molding, lithium battery technology, used in lithium batteries, battery pack parts, non-aqueous electrolyte batteries, etc., can solve the problems of decreased insulation performance, easy to fall off, affecting the normal use of batteries, etc. The effect of structural stabilization

Active Publication Date: 2019-12-20
厦门纬达科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tabs are mainly used to connect a single power lithium battery in series or in parallel. In order to prevent short circuit and other situations, the tabs mainly include metal conductor strips and tab rubber blocks connected to them. The tabs of the power lithium battery have relatively wide metal conductors. It is relatively thick, and it needs enough time to absorb a large amount of heat energy when it is thermally compounded with the tab glue. When the surface temperature exceeds the melting point of the tab glue, it can be tightly bonded with the tab glue. The existing tab glue material is easy to burn after long-term use. Falling off, insulation performance decline, the existing metal conductor strips cannot be firmly connected with the tab material, and its welding performance and anti-corrosion performance are not good, which affects the normal use of the battery, so it is necessary to design a power lithium battery Thermal Composite Molding Process

Method used

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Embodiment Construction

[0023] The present invention is further described below in conjunction with specific embodiment:

[0024] A power lithium battery tab heat composite molding process, the process specifically includes the following steps:

[0025] Step 1, preparing metal conductor strips;

[0026] Step 2, preparing polar ear glue;

[0027] Step 3: Heating the prepared metal conductor strips, feeding the prepared tab glue to the surface of the heated metal conductor strips for thermocompression bonding, and stopping heating the metal conductor strips after thermocompression bonding is completed.

[0028] In step 3, the metal conductor strip is heated by an infrared short-wave heating tube, so that the temperature of the heat-pressed part of the metal conductor strip reaches 180-200° C. Adjust the heating power of the infrared short-wave heating tube according to the width and thickness of the metal conductor strip of the tab.

[0029] In step 2, the ear glue is prepared by the following metho...

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PUM

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Abstract

The invention discloses a power lithium battery tab thermal composite molding process. The process specifically comprises the following steps: step one, preparing a metal conductor strip; step two, preparing tab tape; step three, heating the prepared metal conductor strip, and feeding the prepared tab tape to a surface of the heated metal conductor strip to perform thermal-compression, and stopping heating the metal conductor strip after the thermal-compression is finished. The tab obtained through the power lithium battery tab thermal composite molding process is stable in structure, and thethermal conductivity and the insulativity exceed the like products on the market, and the production cost is free from great increasing.

Description

technical field [0001] The invention relates to the field of lithium battery preparation, in particular to a heat-composite molding process for tabs of power lithium batteries. Background technique [0002] "Lithium battery" is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. In 1912, the lithium metal battery was first proposed and studied by Gilbert N. Lewis. In the 1970s, M.S.Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become the mainstream now. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Li-ion batteries do not contain metallic lithium and are rechargeable. Lithium metal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M10/052
CPCH01M10/052H01M50/531Y02E60/10
Inventor 翁永华许家明
Owner 厦门纬达科技股份有限公司
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