Partitioned Battery Housing to Contain Thermal Runaway Spread
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Solution Overview
Problem
Existing battery technologies face challenges in improving the reliability of batteries, particularly due to the risk of thermal runaway spreading from the battery cells to electrical components within the battery.
Innovation Solution
The battery design incorporates a box with separate accommodating cavities for the battery cell and electrical components, isolated by a partition with a sealingly connected adapter member that electrically connects the two, thereby reducing the risk of thermal runaway propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the battery cell and electrical components are placed in the same accommodating cavity, then the device complexity is reduced, but the reliability deteriorates due to the risk of thermal runaway spreading
Solution Approach 1:
The battery pack is segmented into multiple accommodating cavities (first accommodating cavity for battery cells, second accommodating cavity for electrical components) separated by a partition. This segmentation isolates thermal runaway risks while maintaining organized structure, resolving the contradiction between simplicity and reliability.
2Reliability
If a partition is introduced to isolate battery cells and electrical components, then the reliability is improved by preventing thermal runaway spreading, but the device complexity increases
Solution Approach 1:
The adapter member is integrated directly onto the partition structure, merging the electrical connection function with the isolation structure. This reduces overall device complexity while maintaining the reliability benefits of partitioning, as the adapter serves dual purposes: electrical connection and structural integration.
3Reliability
If the adapter member is sealingly connected to the partition, then the reliability is improved by isolating cavities, but the ease of manufacture deteriorates due to additional sealing requirements
Solution Approach 1:
A sealing ring (flexible element) is introduced to achieve the sealing connection between the adapter member and partition. This flexible sealing approach is easier to manufacture than rigid sealed connections, as it accommodates manufacturing tolerances and simplifies assembly while ensuring reliable thermal isolation.
Data Source
AI summary
A battery and an electrical apparatus are described. The battery includes a box, a battery cell, an electrical component, and at least one adapter member; the box has a first accommodating cavity, a second accommodating cavity, and a partition that isolates the first accommodating cavity from the second accommodating cavity; the battery cell is accommodated in the first accommodating cavity; the electrical component is accommodated in the second accommodating cavity; the at least one adapter member is disposed on the partition and sealingly connected to the partition, the at least one adapter member electrically connecting the electrical component and the battery cell. In the battery, the first accommodating cavity and the second accommodating cavity are isolated from each other to reduce the possibility of spreading thermal runaway occurring in one of the electrical component and the battery cell to the other.