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Variable-thickness honeycomb automobile battery pack shell structure

A shell structure and automobile battery technology, applied in the direction of batteries, structural parts, battery pack parts, etc., can solve the problems of inability to fully absorb collision energy and performance differences, and achieve high specific stiffness, high rigidity, and increased The effect of stiffness

Pending Publication Date: 2018-11-16
丹阳科美汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the design of the battery pack shell in the prior art, it is generally welded by sheet stamping parts of equal strength and thickness. Such a structure cannot fully absorb the collision energy, reduce battery damage, and cannot achieve performance differences at different positions of the structure. Achieve lightweight design

Method used

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  • Variable-thickness honeycomb automobile battery pack shell structure
  • Variable-thickness honeycomb automobile battery pack shell structure
  • Variable-thickness honeycomb automobile battery pack shell structure

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, feature of the present invention and operating strategy are described in further detail by embodiment:

[0021] like figure 1 , Figure 2a , Figure 2b The schematic diagram of the shell structure of the variable thickness honeycomb battery pack is shown, including the side wall of the shell, the rear end cover 1 and the front end cover 2. The rear end cover and the side wall are sandwich structures filled with honeycomb interlayers. 4 and a honeycomb core 5. The front end cover is an ordinary thin plate part.

[0022] The sandwich honeycomb sandwich structure of the rear end cover is the main energy-absorbing area of ​​the collision. In order to ensure sufficient energy-absorbing characteristics, this part of the structure should not be less than 1 / 8 of the total shell size. The honeycomb sandwich structure of the side wall bears a small load and is not directly contacted by the impact force, so the width of the side ...

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Abstract

The invention discloses a variable-thickness honeycomb automobile battery pack shell structure. The battery pack shell structure is composed of a shell sidewall, a rear end cover and a front end cover. The sidewall and the rear end cover are honeycomb-filled sandwich structures, and the front end cover is a thin plate structure. The thickness of the honeycomb wall of the rear end cover increases from the back to the front (from the tail of a vehicle to the head end of the vehicle) in the axial direction of the honeycomb, and the thickness of the remaining thin-walled plates remains unchanged.By designing the sidewall and the rear end cover of the shell into the honeycomb-filled sandwich structure, collision energy is greatly absorbed when rear-end collision of electric buses occurs; by introducing the variable-thickness design of the honeycomb wall thickness, rear weakness and front strength of the rear end cover are achieved, structural deformation can proceed successively, energy absorption is stable, the collision peak acceleration is reduced, the damage to the battery pack is reduced, and the quality of the shell can be significantly reduced compared with the equal thickness design.

Description

technical field [0001] The invention belongs to the technical field of structural design of automobile parts, and in particular relates to a battery pack casing. Background technique [0002] With the rapid development of electric buses in my country, the lightweight design and safety design of electric bus components have received widespread attention. In the design of electric buses, the safety of the battery and the lightweight of the casing are the focus of engineers' attention. The battery pack housing is located at the rear of the vehicle. When a rear collision occurs, the safety of the battery is greatly challenged, and the battery is extremely vulnerable to damage, fire, or even explosion. Therefore, it is necessary to design an excellent lightweight battery pack shell structure with high strength and rigidity and strong ability to absorb collision energy. [0003] When the electric bus encounters a rear impact, the rear end of the battery pack shell is first crush...

Claims

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Application Information

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IPC IPC(8): H01M2/10
CPCH01M2200/00H01M50/20Y02E60/10
Inventor 徐峰祥
Owner 丹阳科美汽车部件有限公司
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