Partitioned Battery Housing for Higher Energy Density
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Solution Overview
Problem
Current battery technologies face challenges in increasing energy density due to the multiple barriers required when packaging electrode assemblies, which occupy significant volume and reduce energy efficiency.
Innovation Solution
A battery design featuring an insulating housing with multiple accommodating spaces separated by a barrier, where each space houses a group of electrode assemblies, and an end cover with electrode terminals that connects to the housing to enclose the assemblies, reducing the number of barriers and enhancing energy density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple independent battery cells are packaged separately, then each cell has independent protection, but the number of barriers increases and energy density decreases
Solution Approach 1:
The patent merges multiple independent battery cell housings into a single integrated housing structure that contains multiple accommodating spaces. Instead of using separate housings for each battery cell, the invention creates one unified housing with internal partitions, reducing the total number of barriers from two layers per cell to one shared layer, thereby increasing energy density while maintaining independent protection through the partition walls.
Solution Approach 2:
The housing is segmented into multiple accommodating spaces by internal partition walls, allowing each battery cell to have its own dedicated space while sharing common structural elements. This segmentation provides independent protection for each cell while utilizing shared barriers to reduce overall material usage and increase energy density.
2Reliability
If two layers of barriers are used for each independent housing, then sealing performance is improved, but volume occupied increases and energy density decreases
Solution Approach 1:
The patent combines multiple housing structures into one integrated housing that serves multiple battery cells. The external housing provides a common protective envelope, while internal partition walls provide additional separation. This merging reduces the total volume occupied by external housings while maintaining sealing performance through the combination of external housing seals and internal partition seals.
3Reliability
If multiple independent housings are used, then each battery cell is protected, but the number of barriers between adjacent electrode assemblies increases
Solution Approach 1:
The patent merges the protective functions of multiple independent housings into a single integrated housing structure. The external housing provides common protection for all battery cells, while internal partition walls provide necessary separation. This reduces the number of barriers from two external housings per cell to one external housing plus shared internal partitions, simplifying the overall structure while maintaining protection.
Data Source
AI summary
A battery includes a plurality of groups of electrode assemblies and an insulating housing. The insulating housing includes a plurality of accommodating spaces, each accommodating space has an opening. Adjacent accommodating spaces are separated by a barrier. Each accommodating space is used to accommodate one group of the electrode assemblies. The battery further includes an end cover provided with a plurality of pairs of electrode terminals. Each pair of electrode terminals corresponds to one of the accommodating spaces. The end cover is connected to the insulating housing, and covers openings of the plurality of accommodating spaces, so as to enclose the plurality of groups of electrode assemblies in the plurality of accommodating spaces.