Battery Casing Assembly With Recessed Terminal Post Isolation
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Solution Overview
Problem
Conventional battery casing designs result in energy density loss and safety risks due to the terminal post occupying internal space and potentially piercing electrode plates during crush tests, leading to short circuits.
Innovation Solution
A battery casing assembly where the terminal post is partially received in a recessed space within the casing, allowing for improved energy density and reduced risk of short circuits by maintaining a safe distance from the electrode plates, with a design that includes a first casing portion protruding from a second casing portion and insulation plates for electrical isolation and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal post is fixed in the top cover occupying internal space, then the terminal post can be electrically connected to the battery cell, but the energy density is reduced due to space loss
Solution Approach 1:
The patent creates a recessed receiving space within the top cover's internal volume, effectively utilizing three-dimensional space arrangement. The terminal post is positioned in this recessed area, allowing electrical connection functionality while minimizing the footprint occupied in the planar dimension, thereby improving energy density.
2Volume of moving object
If the terminal post is positioned close to the battery cell for compact design, then the device size is reduced, but the terminal post may pierce the electrode plates during crush test causing short circuit
Solution Approach 1:
The patent designs a recessed receiving space that positions the terminal post at a predetermined safe distance from the battery cell's electrode plates. This pre-established spatial buffer zone prevents the terminal post from piercing the electrode plates during crush tests, eliminating short circuit risks before they can occur.
3Object-affected harmful factors
If the terminal post is isolated from the battery cell to prevent short circuits, then safety is improved, but the structural complexity increases
Solution Approach 1:
The patent integrates the receiving space directly into the top cover structure, merging the functions of terminal post mounting and electrical isolation into a single structural feature. The recessed design simultaneously achieves terminal post fixation, electrical insulation from the battery cell, and mechanical protection, without requiring separate isolation components.
Data Source
AI summary
A battery includes a casing assembly which includes a terminal post and a first casing. The first casing includes a first casing portion and a second casing portion connected to the first casing portion. The first casing portion protrudes from the second casing portion to define a receiving space. The terminal post is fixed to the first casing portion and partially received in the receiving space. A battery including the battery casing assembly is further provided.