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Intensive low-cost flexible battery pack box body connecting method

A connection method and battery pack technology, which are applied to battery pack components, circuits, electrical components, etc., can solve the problems of reduced space utilization rate inside the box, complicated structure and design of the battery pack, and complicated design of the lower box 2, etc. To achieve the effect of reducing the number of tooling investment, saving internal space and low cost

Pending Publication Date: 2022-07-15
DONGFENG WUHAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the performance requirements of the battery pack are also very high, and there are high requirements for its sealing performance, flame retardant performance, strength, stiffness, impact resistance, vibration resistance, extrusion resistance, thermal conductivity, puncture resistance and many other indicators. At the same time In order to improve the energy density of the entire battery pack, and hope that the battery pack can be the lightest in weight, the structure and design of the battery pack are very complicated.
At the same time, the battery pack will be bigger and bigger in the future to improve the cruising range. Therefore, the connection between the upper cover and the lower box of the battery pack has become a new problem.
In order to ensure the connection strength, reduce the span between the connection points, reduce the vibration of the upper cover 1, and improve the NVH performance, in addition to setting the connection points around the circumference of the lower box 2, it is also necessary to design the connection inside the box. point, that is, to set up an additional connection structure 3, such as figure 1 and figure 2 As shown, the internal design of the lower box 2 is complicated, the manufacturing cost is increased, and the utilization rate of the inner space of the box is reduced, etc.

Method used

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  • Intensive low-cost flexible battery pack box body connecting method
  • Intensive low-cost flexible battery pack box body connecting method
  • Intensive low-cost flexible battery pack box body connecting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] like image 3 and Image 6 as well as Figure 12 As shown, the connecting brackets 5 are arranged horizontally, and a plurality of connecting brackets 5 are arranged in the longitudinal direction.

Embodiment 2

[0050] like Figure 4 and Figure 7 As shown, the connecting bracket 5 is arranged horizontally and one is arranged in the longitudinal direction. The connecting bracket 5 covers all the modules 4 in the same longitudinal direction, and a plurality of connection points are correspondingly arranged according to the actual situation.

Embodiment 3

[0052] like Figure 5 and Figure 8 As shown, the connecting brackets 5 are longitudinally arranged and two are arranged at intervals. Both sides of the connecting bracket 5 cover two laterally adjacent modules 4, and the top is provided with two connection points connected to the upper cover 1. Of course, according to the actual situation, The distance between the connection points of the connection bracket 5 and the range covered by the connection bracket 5 can be adjusted flexibly.

[0053] On the basis of the specific connection modes of Embodiments 1 to 3, the specific structural deformation of the connection bracket 5 is as follows. Of course, the present application is not limited to the specific structure and specific connection mode of the connection frame.

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PUM

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Abstract

The invention discloses an intensive low-cost flexible battery pack box body connection method, which comprises the following steps of: not additionally arranging an independent connection component in a lower box body of a battery pack, but utilizing a fixed connection point which must exist in the existing battery pack as a connection point between an upper cover of the battery pack and the lower box body, so as to realize the connection of the battery pack box body. On the basis of maintaining the basic structure of the lower box body, the internal structure is optimized, the arrangement volume of the modules in the lower box body is increased, the space utilization rate is increased, the energy density of the whole pack is improved, and on the basis of the existing connecting structure of the lower box body and the modules, the connection between the upper cover and the lower box body of the battery pack is realized through the specially designed structure.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles. More specifically, the present invention relates to an intensive and low-cost flexible battery pack box connection method. Background technique [0002] With the continuous increase in the number of automobiles in my country, the resulting energy shortage and environmental pollution problems have become more and more prominent. Therefore, my country vigorously promotes new energy vehicles, among which the focus is on the development of electric vehicles. [0003] The battery pack is one of the key components of electric vehicles and is used to load power cells, so battery pack technology is very important for electric vehicles. At the same time, the performance requirements of the battery pack are also very high, and there are high requirements for its sealing performance, flame retardant performance, strength, stiffness, impact resistance, vibration resistance, extrusion resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/211H01M50/244H01M50/249
CPCH01M50/211H01M50/244H01M50/249
Inventor 方锳泽龙曲波高涵邢铁彪王宇威杨宇张浩
Owner DONGFENG WUHAN IND