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Multi-purpose battery gas production in-situ detection and analysis device

An in-situ detection and analysis device technology, applied in measurement devices, analysis materials, measurement electricity and other directions, can solve the problems of electrode materials, electrolyte development and modification work difficulties, etc., to achieve compact and flexible structure design, conducive to accurate measurement, Small footprint effect

Active Publication Date: 2020-10-13
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It is often difficult for people to collect, detect, and analyze the battery gas production process and the corresponding gas products in situ during the charge and discharge test, so that the development of electrode materials and electrolytes for the gas production of high-nickel power lithium-ion batteries and metal secondary batteries and modification work becomes difficult

Method used

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  • Multi-purpose battery gas production in-situ detection and analysis device
  • Multi-purpose battery gas production in-situ detection and analysis device
  • Multi-purpose battery gas production in-situ detection and analysis device

Examples

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Embodiment 1

[0030] A multi-purpose battery gas production in-situ detection and analysis device for detecting and analyzing cylindrical batteries, including a bracket 1, the bracket 1 includes a rear support vertical plate, the bottom of the rear support vertical plate is provided with a first support foot, and the rear support vertical plate A front support beam is extended forward on the top of the front support beam, and vertical bolt holes are opened on the front support beam. Support platforms are respectively extended forward on both sides of the lower part of the rear support vertical plate, and the front ends of the two support platforms are respectively extended downward. There are a second support foot and a third support foot; both sides of the bottom of the lower cylinder body 4 are provided with slots that match the upper support platform of the bracket 1, and the lower cylinder body 4 is slidingly mounted on the bottom of the bracket 1 through the slots on it. On the support ...

Embodiment 2

[0033] A multi-purpose battery gas production in-situ detection and analysis device for detecting and analyzing button batteries, including a bracket 1, the bracket 1 includes a rear support vertical plate, the bottom of the rear support vertical plate is provided with a first support foot, and the rear support vertical plate A front support beam is extended forward on the top of the front support beam, and vertical bolt holes are opened on the front support beam. Support platforms are respectively extended forward on both sides of the lower part of the rear support vertical plate, and the front ends of the two support platforms are respectively extended downward. There are a second support foot and a third support foot; both sides of the bottom of the lower cylinder body 4 are provided with slots that match the upper support platform of the bracket 1, and the lower cylinder body 4 is slidingly mounted on the bottom of the bracket 1 through the slots on it. On the support platf...

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Abstract

The invention discloses an in situ detection and analysis device for multipurpose battery gas generation. The device mainly consists of a bracket, a lower cylinder body, a middle cylinder ring, a topcover, a spring, an insulating inner lining, an electric conduction gasket, a thumbscrew and the like and is connected with an injector, a numeric display pressure sensor and the like. The device combines the detection and analysis of a button battery and a cylindrical battery; and when a battery which is put in a main body device is subjected to a charging and discharging test, gas pressure in the main body device can be displayed in real time through the numeric display pressure sensor, the indicating value change of the sensor corresponds to the change of a battery gas generation amount, and the stability or the safety of battery materials can be indirectly evaluated. After the battery is put or subjected to charging and discharging circulation for a period of time in the main body device, through an online or offline gaseous phase sample introduction way, gas in the main body device can be transmitted to a gas chromatography-mass spectrometer to be subjected to in situ analysis, and the gas generation amount and the compositions of the produced gas depend on materials adopted by the battery, and therefore, the stability or the safety of the adopted battery material can be evaluated.

Description

technical field [0001] The invention relates to the technical field of battery detection and analysis, in particular to a multipurpose battery gas production in-situ detection and analysis device. Background technique [0002] The signing of the "Paris Agreement" marks an important consensus reached by countries around the world on reducing carbon emissions and global environmental governance. The high-density nickel power battery has become the key to the improvement of the battery life of electric vehicles. High-nickel materials used in lithium-ion power batteries, including LiNi 1-y-z co y mn z o 2 、LiNi 1-y-z co y Al z o 2 Such materials (1-y-z>0.5), under high, low pressure and / or high rate charge and discharge conditions, are prone to side reactions with the electrolyte to cause structural instability, and may be accompanied by oxygen, carbon dioxide, low molecular weight olefins and other gaseous production of by-products. In addition, due to the extremel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/387G01R31/389G01L11/00G01N30/02
CPCG01L11/00G01N30/88
Inventor 高学平邱海发王永龙刘胜李国然叶世海
Owner NANKAI UNIV
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