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Method and device for injecting electrolyte into lithium battery

A filling device and electrolyte technology, applied to battery pack components, circuits, electrical components, etc., can solve problems such as low production efficiency, long standing time, and high labor intensity, and achieve automatic operation and good consistency , the effect of simple structure

Inactive Publication Date: 2010-04-21
DONGGUAN HONBRO LI BATTERY EQUIP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional injection method is to use manual needle injection, or soak and fill, and then move it into the static equipment to stand for infiltration. These methods need to be divided into operations, and the injection volume is not accurate, the consistency is poor, the standing time is long, and the production Low efficiency, high labor intensity, more unfavorable for automatic operation

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  • Method and device for injecting electrolyte into lithium battery
  • Method and device for injecting electrolyte into lithium battery
  • Method and device for injecting electrolyte into lithium battery

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Disclosed in the present invention is a lithium battery electrolyte filling method, such as figure 1 As shown, the method includes the following steps:

[0035] 1) Make the inner cavity of the battery form a negative pressure or vacuum state:

[0036] Apply negative pressure to the inner cavity of the battery from the battery liquid injection hole to form a negative pressure state or a vacuum state in the inner cavity of the battery, and maintain this state.

[0037] 2) Quantitatively add electrolyte solution into a liquid injection cup;

[0038] 3) Inject the electrolyte into the inner cavity of the battery under negative pressure or vacuum:

[0039] Make the liquid injection nozzle of the liquid injection cup communicate with the liquid injection hole of the battery, and inject the electrolyte solution in the liquid inject...

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Abstract

The invention discloses a method for injecting electrolyte into a lithium battery, including the flowing steps: (1) forming a negative pressure state or a vacuum state in an inner chamber of a battery; (2) quantificationally adding electrolyte into a liquid injection cup; and (3) injecting the electrolyte into the inner chamber of the battery at negative pressure state or in a vacuum state. The invention also discloses a device for injecting electrolyte into a lithium battery. The device comprises the liquid injection cup, a first sealing mechanism and a second sealing mechanism, wherein a sealing chamber is formed in the liquid injection cup, the bottom of which is provided with a liquid injection mouth installed on a liquid injection hole in the battery during liquid injection; an extract opening and a liquid feeding opening are arranged on the side wall of the sealing chamber; the first sealing mechanism comprises a slide bar penetrating through the sealing chamber, and the end part of the slide bar can control the liquid injection mouth to open and close; and the second sealing mechanism comprises a sealer which can control the liquid feeding opening to open and close. By adopting the method and the device, the purpose for injecting the electrolyte into the battery in the vacuum state can be realized, air inflation or air extraction can be carried out to accelerate permeation, the injection speed is high, quantificational injection can be carried out, the uniformity is good, and automatic operation can be realized.

Description

technical field [0001] The invention relates to a production method and a device of a lithium battery, in particular to a method and a device for filling an electrolyte of a lithium battery. Background technique [0002] In the production process of lithium batteries, the electrolyte needs to be injected quantitatively into the battery packaging. Rigid-packed lithium batteries usually reserve a process hole in the casing for liquid injection. The process hole is small to facilitate final sealing, or open injection is used liquid craft. The traditional injection method is to use manual needle injection, or soak and fill, and then move it into the static equipment to stand for infiltration. These methods need to be divided into operations, and the injection volume is not accurate, the consistency is poor, the standing time is long, and the production The efficiency is low, the labor intensity is high, and it is not conducive to automatic operation. Therefore, it is necessary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/36H01M50/636
CPCY02E60/12Y02E60/10
Inventor 廖均克袁达利张凯旋邓志乾余四拾
Owner DONGGUAN HONBRO LI BATTERY EQUIP TECH
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