Prismatic Battery Housing Conductor Vane Positioning
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Solution Overview
Problem
Lithium-ion batteries with prismatic metal housings face structural issues due to the need for long conductor vanes or extensions when the winding cell is inserted, leading to increased dead volume and inefficient use of space within the housing.
Innovation Solution
A battery design featuring a prismatic metal housing with a collecting and positioning means that fixes conductor vanes exiting from one end face to a conductive clamping rail, allowing the winding cell to be positioned and fixed within the housing without the need for extended or folded vanes, and enabling the housing to be sealed without external modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If long conductor vanes or extensions are used to connect the winding cell to the housing, then electrical connection is achieved, but the dead volume inside the metal housing increases and space utilization decreases
Solution Approach 1:
The patent transitions from using long conductor vanes extending in one dimension to a collecting and positioning means that utilizes the third dimension (vertical insertion into the base). The collecting and positioning means receives conductor vanes from above, allowing electrical connection without occupying horizontal space within the housing, thus reducing dead volume while maintaining reliable electrical connection.
2Volume of moving object
If conductor vanes are folded and laid against the base to fit within the housing, then space is saved, but the structural complexity and manufacturing difficulty increase
Solution Approach 1:
The patent extracts the conductor vane configuration problem from the horizontal plane by introducing a vertical collecting and positioning means. Instead of folding and laying conductor vanes against the base, the collecting and positioning means receives them vertically from above, simplifying the structure while achieving compact space utilization within the housing.
3Reliability
If the housing is sealed without modifications, then gas-tight seal is achieved, but the pole stud cannot pass through the cover
Solution Approach 1:
The patent introduces an insulating bushing as an intermediary component at the through-hole in the cover. The bushing allows the conductive pole stud to pass through while maintaining the gas-tight seal of the metal cover, solving both the sealing requirement and the pole stud installation requirement simultaneously.
Data Source
AI summary
A battery has a prismatic metal housing that includes a rectangular base having a base inner side and a base outer side, a rectangular cover having a cover inner side and a cover outer side, the size and shape of which substantially correspond to that of the base, and four rectangular side elements connecting the base and the cover and each have an inner side and an outer side. The at least one individual cell is a winding having a first and a second end face and the first end face faces in the direction of the base and the second end face faces in the direction of the cover. Conductor vanes electrically connect to the base of the metal housing exit from the first end face. These are fixed to an electrically conductive collecting and positioning means inserted into a receiving means in the base of the metal housing and fixed therein.