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Lithium ion cell injection method using the injecting header

A lithium-ion battery, liquid injection head technology, applied in battery pack parts, circuits, electrical components, etc., can solve problems such as electrolyte leakage, low efficiency, instability, etc., to prevent leakage, improve production efficiency, The effect of improving the degree of sealing

Inactive Publication Date: 2007-11-28
黄春章
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  • Application Information

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Problems solved by technology

[0002] Organic electrolyte is an important part of lithium-ion batteries. Since the potential of the negative electrode of lithium-ion batteries is similar to that of lithium, it is relatively active and unstable in aqueous solution systems. Non-aqueous and aprotic organic solvents must be used as the carrier of lithium ions. The electrolyte mainly includes mono-, binary-, or ternary mixed solvents composed of ethylene carbonate, dimethyl carbonate, diethyl carbonate, and ethyl methyl carbonate. In the preparation process of lithium-ion batteries, organic electrolytic The liquid injection is injected into the battery through the liquid injection hole on the battery, and the method widely used in the production line is manual liquid injection or the movable liquid injection head (containing the electrolyte) sequentially contacting the battery, and injecting the electrolyte through pressure. This method has the problems of low efficiency and electrolyte leakage, which causes waste and pollutes the environment

Method used

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  • Lithium ion cell injection method using the injecting header
  • Lithium ion cell injection method using the injecting header
  • Lithium ion cell injection method using the injecting header

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Embodiment Construction

[0017] A liquid injection method for a lithium-ion battery using a liquid injection head is provided, using a liquid injection head with an electrolyte container and an elastic material clamp, as shown in Figures 1 and 2, the liquid injection head 9 includes an electrolyte container 1, an electrolyte container 1. The whole is in the shape of a large top and a small bottom. The liquid inlet 2 is set at the upper end, and the liquid outlet 3 is set at the lower end. The inner side of the liquid outlet 3 is provided with a needle tube 4 matching the battery liquid injection hole. The needle tube 4 is made of stainless steel. As a result, the inner side of the end of the liquid outlet 3 is provided with a sealing groove 5 and a sealing ring 6 around the needle tube 4, which can improve the sealing degree between the needle tube and the battery liquid injection port, and prevent leakage of the electrolyte. The positioning structure on the outside of the liquid outlet 3 It is a boss ...

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Abstract

The invention discloses a lithium ion battery injecting method through injection head with electrolyte container and elastic chuck, which comprises the following steps: plugging needle tube in the outlet hole of injection head into the battery injection hole to fix the injection head on the battery of the injected liquid through elastic material chuck; placing several batteries and injection head component into the injection chuck; placing the injection chuck with battery and injection head component into the injection machine; injecting the inlet hole through injection machine; stewing the battery after injecting; placing the battery and injection head into the chemical reacting machine; fetching the injection head. The invention can improve the sealing degree of needle pipe and battery injection hole, which possesses larger inlet hole on the electrolyte container of injection head, in order to improve the manufacturing efficiency.

Description

technical field [0001] The invention relates to a liquid injection method for a lithium ion battery, and more specifically relates to a liquid injection method for a lithium ion battery using a liquid injection head. Background technique [0002] Organic electrolyte is an important part of lithium-ion batteries. Since the potential of the negative electrode of lithium-ion batteries is similar to that of lithium, it is relatively active and unstable in aqueous solution systems. Non-aqueous and aprotic organic solvents must be used as the carrier of lithium ions. The electrolyte mainly includes mono-, binary-, or ternary mixed solvents composed of ethylene carbonate, dimethyl carbonate, diethyl carbonate, and ethyl methyl carbonate. In the preparation process of lithium-ion batteries, organic electrolytic The liquid injection is injected into the battery through the liquid injection hole on the battery, and the method widely used in the production line is manual liquid injecti...

Claims

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Application Information

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IPC IPC(8): H01M2/36H01M50/609
CPCY02E60/10
Inventor 黄春章
Owner 黄春章
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