Power Storage Cell Thermal Layout Around Safety Valves
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Solution Overview
Problem
Existing power storage devices face challenges in effectively suppressing heat transfer between adjacent power storage cells.
Innovation Solution
A power storage device design featuring first and second heat conduction members extending between power storage cells, connected by first and second connecting members, which form heat transfer paths to suppress heat transfer between adjacent cells, along with a cooler system to further manage heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat conduction members are added to suppress heat transfer between cells, then thermal management performance is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple heat conduction members (first and second heat conduction members) into a unified thermal management structure that extends continuously from one end of the battery pack to the other. This merging approach creates an integrated heat dissipation system that improves thermal management performance while avoiding the complexity of multiple separate cooling systems.
Solution Approach 2:
The heat conduction members serve multiple functions: they conduct heat away from individual battery cells, provide structural support between cells, and create thermal isolation barriers. This multi-functionality improves reliability by addressing thermal management needs without proportionally increasing device complexity.
2Reliability
If heat conduction members are positioned close to safety valves, then heat transfer suppression is improved, but safety valve integrity may be compromised
Solution Approach 1:
The patent applies local quality by positioning heat conduction members at specific locations relative to safety valves. The first heat conduction member is positioned to face portions of the valve mounting surface on one side of the safety valve, while the second heat conduction member faces portions on the other side. This localized arrangement suppresses heat transfer to the safety valve without compromising its integrity.
Solution Approach 2:
The heat conduction members act as intermediary elements between the battery cells and the safety valves. They provide controlled thermal pathways that manage heat flow away from critical components like safety valves, thereby suppressing harmful heat transfer while maintaining safety valve functionality through proper positioning.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively suppresses heat transfer between adjacent power storage cells, maintaining safety valve integrity and enhancing thermal management.
Implementation Method 1
a first heat conduction member with a shape extending from one end side power storage cell disposed at an end portion on one side in a first direction among the power storage cells to another end side power storage cell disposed at an end portion on another side in the first direction among the power storage cells; a second heat conduction member with a shape extending from the one end side power storage cell to the other end side power storage cell
Data Source
AI summary
A power storage device includes a plurality of power storage cells, a first heat conduction member, a second heat conduction member, a first connecting member, and a second connecting member. The first heat conduction member faces a portion on one side of a safety valve in a second direction. The second heat conduction member faces a portion on another side of the safety valve in the second direction. The first connecting member is provided between the valve mounting surface of each power storage cell disposed in odd-numbered positions from one end side power storage cell to another end side power storage cell, and the first heat conduction member. The second connecting member is provided between the valve mounting surface of each power storage cell disposed in even-numbered positions from the one end side power storage cell to the other end side power storage cell, and the second heat conduction member.