CAE-based vibration fatigue simulation test method of new energy vehicle battery pack

A new energy vehicle, vibration fatigue technology, used in vibration testing, machine/structural component testing, measuring devices, etc., can solve the problem of high cost of battery packs, improve design efficiency, reduce costs, and reduce the number of tests.

Inactive Publication Date: 2019-04-05
BEIDOU AEROSPACE AUTOMOBILE BEIJING CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] However, conducting a battery pack vibration test is costly and comes with dangers
In the process of battery pack structure design, process optimization through a large number of experiments will consume a lot of manpower and material resources

Method used

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  • CAE-based vibration fatigue simulation test method of new energy vehicle battery pack
  • CAE-based vibration fatigue simulation test method of new energy vehicle battery pack
  • CAE-based vibration fatigue simulation test method of new energy vehicle battery pack

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Embodiment Construction

[0035] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation or a ...

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Abstract

The invention relates to a CAE-based vibration fatigue simulation test method of a new energy vehicle battery pack.The CAE-based vibration fatigue simulation test method comprises the steps that virtual connection parts among a virtual battery pack, a virtual vibration test bench and a virtual battery pack and a virtual vibration test bench areconstructed to obtain a vibration fatigue virtual testdevice; modal calculation is performed on the virtual battery pack within the test vibration frequency range, and the natural frequency and modal matrix of the virtual battery pack are obtained; andactual vibration excitation load is applied to the vibration fatigue virtual test device under the natural frequency and modal matrix of the virtual battery pack; and the vibration fatigue parametersof the virtual battery pack under the actual vibration excitation load are calculated, whether the vibration fatigue parameters meet the vibration fatigue parameter threshold range conditions or not is determined, and if so, the initial parameters of the battery pack are stored to be taken as the design parameters of the battery pack for designing the battery pack. The CAE-based vibration fatiguesimulation test method evaluates whether the virtual battery pack is subjected to vibration fatigue damage or not during the test, and reduces the test cost of the battery pack design.

Description

Technical field [0001] The invention relates to the technical field of vehicle battery pack performance detection, in particular to a CAE-based vibration fatigue simulation test method for a new energy automobile battery pack. Background technique [0002] As an important part of new energy vehicles, the safety performance of battery packs is very important. Among them, the vibration fatigue performance of the battery pack is an important assessment content of the battery pack. The vibration fatigue performance of the battery pack can be tested by the test. The test is required by the regulations. The battery pack is installed on the vibration test bench and subjected to continuous vibration for several hours according to the given vibration mode and frequency of the test. Observe the test condition of the battery pack and require the battery The bag keeps reliable connection, the structure is intact, and there is no phenomenon such as shell cracking, fire or explosion. [0003] H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
CPCG01M7/02
Inventor 刘贵生许嘉慧吕学文吴庆国吕佳明刘志钢
Owner BEIDOU AEROSPACE AUTOMOBILE BEIJING CO LTD
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