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Device for quickly evaluating pressure risk of lithium ion battery

A lithium-ion battery and pressure technology, applied in measuring devices, measuring fluid pressure, secondary battery repair/maintenance, etc., can solve problems such as battery performance degradation, module cracking, and affecting user safety, and achieve simple operation Effect

Inactive Publication Date: 2019-05-28
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The battery bulges and leaks during use, which seriously affects the safety of users. When the battery is assembled into a module, the squeezing force between the bulging batteries will rise sharply, which will cause the performance of the battery to decline, and seriously It will cause the module to crack and cause uncontrollable safety accidents

Method used

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  • Device for quickly evaluating pressure risk of lithium ion battery

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Effect test

Embodiment Construction

[0011] refer to figure 1 , the present invention proposes a device for quickly evaluating the pressure risk of lithium-ion batteries, including a fixing mechanism, a first pressure sensor 1, a second pressure sensor 2 and a data acquisition instrument 3; wherein:

[0012] The fixing mechanism comprises a first splint 4, a second splint 5, a third splint 6 and four screw rods 7, and the first splint 4, the second splint 5, and the third splint 6 are arranged successively in the horizontal direction and the first splint 4, the second splint The splint 5 and the third splint 6 are parallel to each other, and the four screw rods 7 are respectively arranged at the four corners of the first splint 4, and the first ends of the screw rods 7 pass through the first splint 4, the second splint 5, and the third splint 6 successively. It is threadedly connected with the first splint 4 and the third splint 6, and there is no contact connection between the screw rod 7 and the second splint 5...

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Abstract

The invention provides a device for rapidly evaluating the pressure risk of a lithium ion battery. The device comprises a fixing mechanism, a first pressure sensor, a second pressure sensor and a dataacquisition instrument. Four screws are arranged at the four corners of a first clamping plate respectively, the first ends of the screws penetrate through the first clamping plate, a second clampingplate and a third clamping plate in sequence and are connected with the first clamping plate and the third clamping plate in a threaded fit mode, a battery fixing area is formed between the first clamping plate and the second clamping plate, and the first pressure sensor is installed between the second clamping plate and the third clamping plate. The second pressure sensor is connected with a battery explosion-proof valve through a connecting piece. And the data acquisition instrument is electrically connected with the first pressure sensor and the second pressure sensor. Through the first pressure sensor and the second pressure sensor, the internal pressure-air pressure and external pressure-expansive force of the battery are synchronously acquired. The internal pressure and the externalpressure of the battery are organically combined. The risk grade of the battery can be accurately and rapidly judged, and the device can be directly used for the current lithium ion battery.

Description

technical field [0001] The invention relates to the technical field of lithium-ion battery testing, in particular to a device for quickly evaluating the pressure risk of lithium-ion batteries. Background technique [0002] Due to the important advantages of lithium-ion batteries such as high voltage and high capacity, long cycle life and high safety performance, it has broad application prospects in portable electronic equipment, electric vehicles, space technology, defense industry, etc. A research hotspot that has been widely concerned in the past year. [0003] While lithium batteries have many advantages, they also have some disadvantages. The battery bulges and leaks during use, which seriously affects the safety of users. When the battery is assembled into a module, the squeezing force between the bulging batteries will rise sharply, which will cause the performance of the battery to decline, and seriously It will cause the module to crack and cause uncontrollable sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42G01L11/00
CPCY02E60/10
Inventor 龚根飞
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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