Pouch Battery Pack Layout With Through-Cell Reinforcing Pole
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Solution Overview
Problem
Conventional pouch-type battery packs face limitations in spatial efficiency and mechanical strength due to protruding electrode leads and the need for separate spaces for reinforcing bars, which reduces the overall space utilization.
Innovation Solution
The battery pack design incorporates asymmetrically formed electrode leads and a reinforcing pole that penetrates the battery cells, allowing for improved mechanical strength without additional space requirements, and includes a battery management system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a separate space is allocated for a reinforcing bar in a conventional battery pack, then the mechanical strength is improved, but the space utilization rate deteriorates
Solution Approach 1:
The reinforcing bar is merged with the electrode leads by forming the reinforcing bar from the electrode leads themselves. The electrode leads are configured to extend through multiple battery cells and are joined together to form the reinforcing bar, thereby eliminating the need for separate reinforcing structures and improving space utilization while maintaining mechanical strength.
Solution Approach 2:
The electrode leads serve dual functions: electrical connection and structural reinforcement. By configuring the electrode leads to extend through multiple battery cells and join with adjacent leads, they simultaneously perform their electrical function and provide mechanical support as reinforcing bars, eliminating the need for dedicated reinforcing structures.
2Ease of operation
If protruding electrode leads are used in pouch-type batteries, then electrical connection is achieved, but spatial efficiency deteriorates
Solution Approach 1:
The electrode leads are configured to extend in the thickness direction of the battery pack rather than protruding laterally. By changing the orientation from lateral protrusion to thickness-direction extension, the electrode leads achieve electrical connection while minimizing impact on lateral spatial efficiency.
Solution Approach 2:
The electrode leads are merged with the reinforcing bar function. The same electrode leads that provide electrical connection also form the reinforcing bar when joined with adjacent leads, thereby eliminating the need for separate reinforcing structures and improving overall spatial efficiency.
Data Source
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AI summary
A battery cell has asymmetrically formed electrode leads, and a battery module includes the same. The spatial efficiency and the mechanical strength of the battery module are improved.