Battery Pack Barrier Walls and Compression Member
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Solution Overview
Problem
Existing battery packs face issues with event transitions such as swelling or heat emission from one battery cell to others, and sagging or twisting of battery cells due to uneven compression and structural limitations.
Innovation Solution
A battery pack design featuring a housing with support and barrier walls that separates and compresses battery modules using a compression member, preventing event transitions and ensuring uniform compression, while allowing for varying module heights and efficient assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery modules are arranged side by side in a housing without separation structures, then the device complexity is reduced, but event transitions such as swelling or heat emission can spread from one battery cell to others
Solution Approach 1:
The housing is segmented into multiple compartments by barrier walls, physically separating battery modules to prevent event transitions. Each barrier wall creates an independent containment space for adjacent battery modules, isolating potential thermal or mechanical events to specific sections.
Solution Approach 2:
Barrier walls act as intermediary structures between battery modules, serving as physical barriers that prevent direct contact and event propagation. These walls mediate the spatial relationship between modules while maintaining structural integrity of the housing.
2Volume of moving object
If battery cells are compressed unevenly to fit the housing, then the spatial efficiency is improved, but sagging or twisting of battery cells occurs
Solution Approach 1:
Compression members are designed with locally differentiated contact points and pressure distribution zones. Each compression member applies force at specific locations tailored to the local requirements of battery modules, ensuring uniform compression without causing sagging or twisting while maximizing spatial utilization.
3Quantity of substance
If battery modules are tightly arranged to maximize capacity, then the quantity of battery cells is increased, but event transitions between modules can occur more easily
Solution Approach 1:
The housing space is segmented into multiple compartments by barrier walls, allowing maximum number of battery modules to be arranged while maintaining physical separation. This segmentation enables tight packing of modules without compromising isolation, as each module occupies its own defined space within the segmented structure.
Data Source
AI summary
An embodiment of the present disclosure provides a battery pack including: a plurality of battery modules each including at least one battery cell; a housing supporting the plurality of battery modules which are arranged side by side in a first direction, the housing including a support wall that covers at least one surface of the plurality of battery modules and a barrier wall that is placed between the plurality of battery modules; a compression member provided on the housing and pressing the plurality of battery modules; and a cover coupled to the housing and covering the plurality of battery modules and the compression member.