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Battery pack waterproof test scoring method

A battery pack and state technology, applied in vibration test, impact test, machine/structural component test, etc., can solve problems such as inability to reflect the waterproof performance of the battery pack, complexity, etc.

Active Publication Date: 2020-10-20
CHINA AUTOMOTIVE ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the driving of the car, the environment faced is far more complicated than the ideal environment in the laboratory, and the simple waterproof test cannot reflect the waterproof performance of the battery pack in actual use.

Method used

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  • Battery pack waterproof test scoring method
  • Battery pack waterproof test scoring method
  • Battery pack waterproof test scoring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 As shown, the battery pack waterproof test scoring method of the present embodiment includes the following steps:

[0043] S1. Perform vibration and mechanical shock tests on the battery pack; in this embodiment, perform vibration and mechanical shock tests according to 8.2.1 Vibration and 8.2.2 Mechanical Shock in GB 38031-2020 "Safety Requirements for Traction Batteries for Electric Vehicles". The battery pack in this embodiment includes accessories such as maintenance switches, high-voltage and low-voltage wiring harnesses in the actual vehicle state.

[0044] S2. Perform IPX9 waterproof test on the battery pack after the vibration and mechanical shock test; the IPX9 waterproof test includes:

[0045] S201. Spray water on the battery pack; when spraying water, the direction of water jetting is perpendicular to the surface of the battery pack, the distance between the nozzle and the battery pack is 150-200 mm, and the water spraying time is not less ...

Embodiment 2

[0060] The difference between this embodiment and Embodiment 1 is that, as figure 2 As shown, this embodiment also includes a battery pack waterproof test scoring device, including a fixed plate 1 , a cover set, a moving wheel set 5 and a push set 6 . The fixing plate 1 is used to place the battery pack 4 .

[0061] The cover group includes a connecting base 2 and a protective cover 3; the bottom end of the connecting base 2 is fixed on the fixed plate 1, and one end of the protective cover 3 is rotationally connected with the top of the connecting base 2, and the protective cover 3 is perpendicular to the fixed plate in the initial state 1. When the protective cover 3 is rotated to a position parallel to the fixed plate 1, it can cover the battery pack 4.

[0062] The quantity of moving wheel group 5 is four, is arranged on four corners of fixed plate 1 respectively. Such as image 3 As shown, the moving wheel set 5 includes a moving wheel 7 , a connecting rod 8 , a rotat...

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Abstract

The invention relates to the technical field of battery pack testing, and particularly discloses a battery pack waterproof test scoring method, which comprises the steps of S1, performing vibration and mechanical impact testing on a battery pack; S2, performing a waterproof test on the battery pack after the vibration and mechanical shock test is completed; the waterproof test comprises the following steps of: S201, spraying water to the battery pack; S202, standing the battery pack after water spraying, identifying the state of the battery pack within a preset time, and generating battery pack state data; and S203, opening the shell of the battery pack after preset time, and detecting the battery pack; and S3, acquiring battery pack state data and detection data; and generating a test scoring result and outputting the test scoring result based on a preset battery pack waterproof test scoring standard. By adopting the technical scheme of the invention, the test is closer to the real use condition of the battery pack.

Description

technical field [0001] The invention relates to the technical field of battery pack testing, in particular to a battery pack waterproof test scoring method. Background technique [0002] As the core component of electric vehicles, the safety of the battery pack directly affects the safety of the entire vehicle. In particular, our country has a vast source of wealth, and the southern coast and even the whole country have frequent summer rainstorms. Electric vehicles are facing the test of high temperature and heavy rainfall in summer. If electric vehicles encounter problems such as wading in the process of use, the waterproof performance of the battery pack has become the focus of everyone's attention. [0003] At present, in terms of the sealing of the battery pack, because the different functional interfaces of the battery pack are quite different in terms of material, structure, and housing position, the waterproof performance is also different. In order to test the wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/02G01M7/02G01M7/08G06K9/20
CPCG01M3/02G01M7/02G01M7/08G06V10/143
Inventor 张亚明张大志周晶晶居浩王小
Owner CHINA AUTOMOTIVE ENG RES INST
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