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Leak hunting device and leak hunting method

A technology of leak detection and leak detection instrument, which is applied in the direction of measuring the rate of increase and deceleration of fluid, and liquid tightness measurement by using liquid/vacuum degree, which can solve the problems of poor helium distribution uniformity and affecting test accuracy, etc.

Pending Publication Date: 2021-01-29
SUZHOU JEE INTELLIGENT EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

[0006] Although this method has high precision, it usually fills the cavity with leak test gas under a certain vacuum condition, and if the detection is not performed under vacuum conditions, due to the uniform distribution of helium in the cavity Often poor, it affects the test accuracy to a certain extent

Method used

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  • Leak hunting device and leak hunting method
  • Leak hunting device and leak hunting method
  • Leak hunting device and leak hunting method

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Embodiment Construction

[0058] Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of applying the technical solutions of the present invention, and all technical solutions formed by adopting equivalent replacements or equivalent transformations fall within the protection scope of the present invention.

[0059] In the description of the scheme, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", " The orientation or positional relationship indicated by "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description and simplification of description, rather than indicating or implying that the device or element referred to must have a specific orientation , constructed and operated in a particular or...

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Abstract

The invention discloses a leak hunting device and a leak hunting method, wherein the leak hunting device comprises a suction head, a leak hunting instrument connected with the suction head and a leaktest gas inflation mechanism, the leak test gas inflation mechanism comprises gas inflation heads, a gas source and a gas supply pipeline connected with the gas inflation heads and the gas source, andthe gas supply pipeline comprises gas inflation branches and a mixing branch which are connected in parallel. The mixing branch comprises a circulating pump, and valve bodies are arranged at the connecting points of the inflation branches and the mixing branch respectively. According to the leak hunting device, the first inflation branch, the second inflation branch and the mixing branch are arranged to be connected with the inflation heads and the gas source, inflation can be stopped after inflation is conducted for a period of time, gas mixing in a cavity is achieved through the mixing branch with a circulating pump, and thus inflated helium can be evenly distributed, and the helium leak hunting precision can be ensured favourably on the basis of no vacuum pumping.

Description

technical field [0001] The invention relates to the field of battery pack processing, in particular to a leak detection device and a leak detection method. Background technique [0002] With the rapid development of new energy vehicles, battery packs, which are the core components of new energy vehicles, have attracted more and more attention from enterprises. [0003] In the production process of battery packs, the sealing and waterproof performance of battery packs is an important safety requirement, and battery packs in certain locations have strict protection level requirements. For example, the battery pack arranged at the bottom has an airtightness rating of IP67. When the airtightness of the battery pack does not meet the requirements, it will cause dust, moisture or even water leakage in the battery pack. These situations will lead to damage to the battery system, and more serious may lead to safety accidents. [0004] The sealing performance of the battery pack P...

Claims

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Application Information

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IPC IPC(8): G01M3/26
CPCG01M3/26
Inventor 李有明朱涛李强
Owner SUZHOU JEE INTELLIGENT EQUIP CO LTD
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