Battery Pack Layout With Nested Protection Circuit Substrate
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Solution Overview
Problem
Existing battery pack designs face challenges in efficiently integrating protection circuit modules with battery cells, particularly in minimizing size and reducing interference between components.
Innovation Solution
The battery pack incorporates a protection circuit module with a substrate positioned between corner portions of the housing, which includes a terrace portion, side sealing portions, and corner portions, along with tapes for support and protection, to create a compact and interference-reduced design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the protection circuit module is integrated with the battery cell using a conventional housing design, then the battery pack size is reduced, but component interference increases and manufacturing complexity increases
Solution Approach 1:
The housing is segmented into multiple functional portions: a body portion containing the battery cell, a terrace portion providing an extended surface, side sealing portions for sealing, and corner portions for structural support. This segmentation allows each portion to be optimized for its specific function, reducing component interference while maintaining compact size.
Solution Approach 2:
The protection circuit module is nested within the battery pack structure, with its substrate positioned between corner portions of the housing. The housing portions are folded and connected to enclose the battery cell and protection circuit module in an integrated manner, minimizing overall volume while preventing component interference.
2Volume of moving object
If the protection circuit module is integrated with the battery cell using a conventional housing design, then the battery pack size is reduced, but device complexity increases
Solution Approach 1:
The housing is constructed using foldable portions that can be bent and connected to form the battery pack enclosure. The side sealing portions and terrace portion are folded and connected to create the housing structure, reducing the need for additional fastening components and simplifying manufacturing while maintaining structural integrity.
Data Source
AI summary
A battery pack includes a battery cell, and a protection circuit module connected to the battery cell, the protection circuit module including a substrate, wherein the battery cell includes an electrode assembly, and a housing surrounding the electrode assembly, the housing including a terrace portion corresponding to a short side portion of the battery cell, a pair of side sealing portions respectively connected to both ends of the terrace portion and corresponding to a pair of long side portions of the battery cell, and a pair of corner portions at a connection portion between the pair of side sealing portions and the terrace portion if the pair of side sealing portions and the terrace portion are respectively folded and the substrate is between the pair of corner portions.