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Airtightness detection equipment for power battery module

A power battery and airtight detection technology, which is applied in fluid tightness testing, liquid tightness measurement using liquid/vacuum degree, measuring device, etc. It can solve problems such as unsuitable for industrial application scenarios, complicated operation, and low precision.

Active Publication Date: 2021-05-07
宁波格劳博智能工业有限公司
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  • Abstract
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Problems solved by technology

This process is complicated to operate, and the precision is low, and it is not suitable for industrial application scenarios

Method used

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  • Airtightness detection equipment for power battery module
  • Airtightness detection equipment for power battery module

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Embodiment Construction

[0034] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided by way of illustration in order to fully convey the spirit of the present invention to those skilled in the art to which the present invention pertains. Therefore, the present invention is not limited to the embodiments disclosed herein.

[0035] The present invention proposes a power battery module airtight detection device, which includes a gas injection module, a transfer module, a first-level airtight detection module and a second-level airtight detection module, such as figure 1 shown.

[0036] The gas injection module is used for injecting compressed air with a first temperature into the power battery module. In the present invention, the first temperature may be any temperature lower than room temperature, preferably 20 degrees Celsius or more lower than room temperature.

[0037] The power ...

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Abstract

The invention provides airtightness detection equipment for a power battery module. The airtightness detection equipment comprises a gas injection module, a transfer module, a first-stage airtightness detection module and a second-stage airtightness detection module. The air injection module injects compressed air with a first temperature into the power battery module. The first-stage air tightness detection module obtains an infrared image of a peripheral area of the power battery module and determines whether the power battery module meets the first-stage air tightness requirement or not based on the infrared image. The second-stage airtightness detection module detects the power battery module meeting the first-stage airtightness requirement so as to determine whether the power battery module meets the second-stage airtightness requirement or not, and the first-stage airtightness requirement is lower than the second-stage airtightness requirement.

Description

technical field [0001] The invention relates to the field of batteries, in particular to an airtight detection device for a power battery module. Background technique [0002] During the production process of the power battery, the battery module needs to undergo a leak detection process. In the traditional leak detection process, the pressure difference detection method is often used to set the detection chamber and the standard chamber, and detect the occurrence of the air leakage process by detecting the pressure change between the two chambers. However, this detection method needs to precisely control the pressure values ​​of the two chambers, and it usually needs to wait for a long time when the leak is small, and even false alarms may occur, which is too inefficient for industrial applications. There is also the pressure drop detection method, which is to fill the gas into the tested part, monitor the internal pressure change through the pressure sensor, and then conf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/32
CPCG01M3/3272
Inventor 张文博李蔡君佘津津寇振伟
Owner 宁波格劳博智能工业有限公司
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