Battery Module Lead Cartridge Spacing Design
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Solution Overview
Problem
Conventional battery modules face issues with undesigned connections between electrode leads, leading to short phenomena during assembly and reduced energy density due to the use of cartridges for spacing, which increase production costs.
Innovation Solution
A battery module design featuring lead cartridges with post parts, partition, spacer, and support elements that receive and space electrode leads, preventing undesigned connections and reducing volume, while maintaining electrical stability through insulating materials and coupling mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cartridges are used for spacing battery cells, then undesigned connections between electrode leads are prevented, but energy density is reduced due to increased volume
Solution Approach 1:
The invention extracts the cartridge structure and integrates only the essential spacing and support functions into a simplified structure. The cartridge body is removed, keeping only the partition and support elements that are necessary for preventing undesigned connections, thereby reducing volume while maintaining reliability
Solution Approach 2:
The invention uses a simplified, minimalistic structure instead of a complete cartridge. Only the essential partition and support elements are retained, eliminating unnecessary components and reducing material usage while still achieving the required spacing and connection prevention functions
2Manufacturing precision
If cartridges are used for spacing battery cells, then electrode leads are properly spaced, but production costs increase
Solution Approach 1:
The invention removes the cartridge body and retains only the essential partition and support elements. This extraction of unnecessary components simplifies the manufacturing process and reduces material costs while maintaining the required spacing precision for electrode leads
Solution Approach 2:
The simplified structure uses fewer materials and less complex assembly steps compared to complete cartridges. The partition and support elements can be manufactured more economically and integrated directly into the battery cell arrangement, reducing production costs while maintaining manufacturing precision
3Reliability
If electrode leads are bent for surface contact, then electrical connection is achieved, but short phenomena occur during assembly
Solution Approach 1:
The partition acts as an intermediary structure between adjacent battery cells. It provides a physical barrier that prevents electrode leads from making undesired contact during assembly, while still allowing the necessary surface contact for electrical connection to occur in the correct locations
Solution Approach 2:
The partition creates localized spacing zones where electrode leads are prevented from contacting adjacent cells in unwanted areas, while allowing contact in specific designated areas. This local differentiation of spacing and contact permissions resolves the contradiction between connection stability and short prevention
Data Source
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AI summary
A battery module according to the present disclosure includes a plurality of battery cells, each including an electrode lead which extends in horizontal direction from a front side, the electrode lead having at least one bent part, wherein the electrode leads disposed adjacent to each other in up-down direction are stacked in up-down direction in surface contact with each other, and a plurality of lead cartridges, each including two post parts disposed at each of an outer side of one end of the electrode lead and an outer side of the other end, a partition part formed in a shape of a plate which stands erect in up-down direction between the two post parts and having a receiving space in which the electrode leads in surface contact are individually received inside, and a first spacer part which protrudes forward from top of the partition part to space the electrode lead which protrudes out of the receiving space apart from a different electrode lead.