Battery Pack Box Layout for Compact Locking and Mounting
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Solution Overview
Problem
Current battery pack boxes for electric vehicles have poor spatial compatibility, leading to increased weight and reduced driving range due to incompatible locking, sealing, and mounting surfaces, which occupy excessive space and compromise battery module capacity.
Innovation Solution
A battery pack box design with integrated locking, sealing, and mounting surfaces on the same plane, allowing for compact dimensions while maintaining structural strength and ease of assembly, using extruded profiles for efficient space utilization and weight reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional sheet metal boxes or metal alloy die-cast boxes are used for battery pack boxes, then the required strength is ensured, but the mounting surface, sealing surface, and locking surface need to independently occupy space in the height direction, resulting in large contour size and increased vehicle weight
Solution Approach 1:
The patent combines the mounting surface, sealing surface, and locking surface into a single integrated structure on the battery pack box. The locking part and mounting part are disposed at different positions along the first direction (length direction) of the side plate, allowing these functions to coexist in the same height space rather than requiring separate height allocations. This merging of functions resolves the contradiction by eliminating the need for independent space occupation while maintaining structural strength.
Solution Approach 2:
The patent transitions from a vertical stacking arrangement (where mounting, sealing, and locking surfaces occupied different height levels) to a horizontal arrangement (where these surfaces are distributed along the length direction of the side plate). By changing the dimension in which these functional surfaces are arranged, the design achieves spatial compatibility and reduces the overall contour size of the battery pack box while preserving all necessary functions.
2Volume of moving object
If the contour size of the battery pack box is reduced to save vehicle space, then the volume available for battery modules is limited, but this compromises the electric capacity of the battery module and shortens the maximum driving range
Solution Approach 1:
By merging the locking and mounting functions into an integrated structure that utilizes the length direction of the side plate, the patent maximizes the use of available space. This allows the battery pack box to have a compact height profile while maintaining adequate internal volume for battery modules, thereby preserving electric capacity without compromising the driving range.
3Volume of moving object
If the battery pack box occupies large space in the vehicle, then the overall size of the new energy vehicle is increased, but this leads to higher energy consumption during running
Solution Approach 1:
The integrated design of locking and mounting parts along the length direction enables the battery pack box to achieve a more compact overall form factor. This reduced volume directly decreases the space occupied in the vehicle, which in turn reduces the vehicle's total weight and energy consumption during operation.
Data Source
AI summary
A battery pack box includes a box body, locking parts, and mounting parts. The box body includes a bottom plate and side plates extending from the bottom plate along a first direction. The locking parts are disposed on a side of the side plate away from the bottom plate in the first direction. The mounting parts are disposed on a side of the side plate close to the bottom plate in the first direction and disposed in correspondence with some of the locking parts in the first direction. Outer side edges of the locking part and mounting part disposed in correspondence in the first direction are aligned with each other in the first direction.