Battery Pack Lead Tab Overlap for Assembly Speed
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Solution Overview
Problem
The existing methods for manufacturing battery packs are inefficient in connecting multiple cells to a protection circuit module, leading to increased processing time.
Innovation Solution
A battery pack design where lead tabs are arranged in a specific overlapping order to connect cells to a protection circuit module, with each lead tab electrically connecting specific electrodes, reducing the complexity and time required for the connection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple cells are connected to a protection circuit module using conventional methods, then the battery pack can be assembled, but the processing time is increased
Solution Approach 1:
The connection process is segmented into distinct stages: first connecting lead tabs to cells in an overlapping arrangement, then connecting the arranged lead tabs to the protection circuit module. This segmentation allows parallel processing and optimizes each connection stage independently, reducing overall assembly time.
Solution Approach 2:
Lead tabs are pre-connected to cells and arranged in an overlapping configuration before being connected to the protection circuit module. This preliminary arrangement positions all connection points optimally, eliminating the need for repositioning during the final connection stage and significantly reducing processing time.
2Productivity
If lead tabs are connected in a conventional non-overlapping arrangement, then the connection process is simpler, but the processing time is increased
Solution Approach 1:
The lead tabs are arranged in an overlapping configuration that utilizes vertical stacking (adding a vertical dimension to the arrangement). This overlapping arrangement allows multiple lead tabs to occupy the same horizontal space at different vertical levels, enabling simultaneous access to all connection points and dramatically improving connection efficiency despite the increased spatial complexity.
Data Source
AI summary
Disclosed is a battery pack including: a plurality of serially connected cells; a protection circuit module electrically connected with the plurality of cells; and a plurality of lead tabs configured to electrically connect the plurality of cells to the protection circuit module, in which the protection circuit module includes a plurality of connection portions, which is arranged in a row and connected with the plurality of lead tabs, respectively, and the plurality of lead tabs overlaps in an order in which the plurality of connection portions is arranged, so that an assembling process time is decreased.