Battery Module Rear Plate Structure for Smooth Case Sliding
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Solution Overview
Problem
Existing battery modules face challenges in smooth insertion and removal from storage cases due to protruding edges and gaps, leading to potential damage and unsmooth operation.
Innovation Solution
A battery module design with a rear plate having a bent portion at the lower end, featuring a bottom connector flush with the bottom plate, and a layered portion fastened to the upper surface, along with a storage case structure that includes partitions and step protrusions for smooth sliding and secure positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the rear plate has a cut edge at the lower end, then the structure is simple and manufacturing is easy, but the battery module cannot be smoothly inserted into or removed from the storage case
Solution Approach 1:
The patent applies curvature by forming a bent portion at the lower end of the rear plate, replacing the sharp cut edge with a curved surface that extends forward. This curved surface allows the battery module to smoothly slide in and out of the storage case without the protruding edge causing obstruction, while still maintaining structural integrity and ease of manufacturing through standard bending processes.
2Ease of operation
If the rear plate lower end is positioned higher to avoid contact with the bottom plate, then smooth removal is achieved, but gaps allow foreign matter entry and air flow
Solution Approach 1:
The patent applies local quality by creating a bent portion with specific geometric characteristics at the lower end of the rear plate. This localized structural modification allows the surface to be flush with the bottom plate in critical areas to prevent gaps, while still providing the necessary curvature for smooth operation. The bent portion's specific shape ensures both operational smoothness and gap elimination at key locations.
3Strength
If the bottom plate has a step to increase rigidity, then structural strength is improved, but the protruding rear plate edge contacts the step and prevents removal
Solution Approach 1:
The bent portion's curved surface is designed to clear the step structure on the bottom plate during insertion and removal operations. The curvature allows the rear plate to follow a smooth path that avoids contact with the step, enabling easy operation while the step remains in place to provide the necessary rigidity and strength to the bottom plate structure.
Data Source
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AI summary
A battery module is smoothly insertable into and removable from a storage case in a slidable manner. A battery module 1 is stored in a storage case 24 being a front-open box. The battery module 1 includes a plurality of battery cells 3 being rechargeable, and an outer case 10 containing the plurality of battery cells 3. The outer case 10 is a box including a bottom plate 11, a top plate 12, two side plates 13, a front plate 14, and a rear plate 15. The outer case 10 has a closed internal container space 2. The rear plate 15 includes a bent portion 15B at a lower end of the rear plate 15. The bent portion 15B is bent frontward at a corner 16 at the lower end. The bent portion 15B includes a bottom connector 15a extending frontward from the corner 16, a layered portion 15c layered on and fastened to an upper surface of a rear end of the bottom plate 11, and a step 15b between the bottom connector 15a and the layered portion 15c. The bottom connector 15a has a lower surface flush with a lower surface of the bottom plate 11.