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Gas collection method and device

A collection device and gas technology, applied in the field of gas collection methods and devices, can solve the problems of poor gas collection effect and inability to collect cylindrical batteries, etc., and achieve good sealing effect

Pending Publication Date: 2021-03-05
DONGGUAN CHUANGMING BATTERY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a gas collection method to solve the technical problems that the existing gas collection method has poor gas collection effect and cannot collect cylindrical batteries with metal casings

Method used

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Embodiment Construction

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations...

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PUM

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Abstract

The invention provides a gas collection method and device, and the method comprises the steps: a battery being packaged in a sealed container, carrying out the vacuumizing of the sealed container, then putting the sealed container into a baking oven for baking, opening a pressure release valve on a battery housing when the air pressure in an accommodation cavity exceeds a preset value, and gas inthe accommodating cavity of the battery housing flowing into the collecting cavity of the sealed container through the pressure release valve. The sealed container containing the battery is placed into the drying oven to be baked, the pressure release valve on the battery housing can be opened, the vacuum sealed container is filled with gas in the battery, a hole does not need to be formed in thesealed container, the sealing effect is good, and gas of the cylindrical battery with the metal housing is collected.

Description

technical field [0001] The invention belongs to the technical field of lithium ion batteries, and more specifically relates to a gas collection method and device. Background technique [0002] Lithium-ion batteries will produce gas under different unsafe conditions. For example, the types and proportions of gases produced after formation, circulation, thermal shock, and overcharge are different. By analyzing the composition and proportion of battery gas, it can be reversed. To analyze the chemical reaction between the electrode and electrolyte of the battery, as well as the storage environment, this will greatly help the subsequent improvement of the performance and safety of lithium-ion batteries. [0003] In order to analyze the composition of the battery gas, it is first necessary to collect the battery gas. At present, a mold that can suck the gas is basically made, and the uncharged winding core and electrolyte of the cylindrical battery are put into the sealing device....

Claims

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Application Information

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IPC IPC(8): H01M50/30H01M10/058
CPCH01M10/058Y02E60/10Y02P70/50
Inventor 袁庆华
Owner DONGGUAN CHUANGMING BATTERY TECH
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