Power Storage Module Cooling With Protrusion Heat Transfer
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Solution Overview
Problem
Conventional power storage modules require complex and costly cooling structures due to the need for uniform heat conductive materials, leading to increased manufacturing costs and inefficiencies in heat transfer.
Innovation Solution
A power storage module design featuring a heat transfer mechanism with a protrusion on one end of the power storage device that is thermally connected to a heat conductive material, allowing for efficient heat transfer using a simple and cost-effective flat plate sheet heat conductive material, which can be easily processed and reduces manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a heat conductive material in the form of a gel is accommodated in an opening part provided in a holder, then the heat conductive material can be applied, but the amount of application needs to be managed and excessive material increases manufacturing cost
Solution Approach 1:
The heat conductive material is divided into multiple separate members (first heat conductive member and second heat conductive member) that are placed in different locations. The first member is placed in contact with the bottom surface of the battery cell, while the second member is placed in the opening part of the holder. This segmentation allows each member to perform its cooling function independently without requiring precise control of total material amount, thereby resolving the contradiction between ease of manufacture and material quantity control.
2Ease of manufacture
If a sheet-like material is used as the heat conductive material, then manufacturing is simplified, but irregularities must be formed on the surface along the opening part which increases molding cost
Solution Approach 1:
The heat conductive material is segmented into two separate sheet-like members rather than using a single complex-shaped member. The first heat conductive member is a simple sheet placed between the battery cell and holder bottom surface, while the second heat conductive member is a simple sheet placed in the opening part. This segmentation eliminates the need for complex surface irregularities or molding operations on a single sheet, thereby resolving the contradiction between manufacturing simplicity and structural complexity.
Solution Approach 2:
The first heat conductive member acts as an intermediary between the battery cell bottom surface and the holder, while the second heat conductive member acts as an intermediary between the opening part and the heat exchange member. These intermediary members simplify the overall structure by using simple sheet-like components rather than requiring complex integrated molding, thereby resolving the contradiction between ease of manufacture and device complexity.
3Temperature
If heat conductive material is used to cool the power storage device, then temperature management is achieved, but uniform thickness is required to uniformly discharge heat which increases manufacturing complexity
Solution Approach 1:
The heat conduction path is segmented into two separate heat conductive members positioned at different locations. The first member contacts the battery cell bottom surface to collect heat uniformly, while the second member is positioned in the opening part to transfer heat to the heat exchange member. This segmentation allows each member to maintain simple uniform thickness without requiring complex integrated structures, thereby resolving the contradiction between heat discharge uniformity and structural complexity.
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
The design enables effective heat management and reduced manufacturing costs by utilizing a flat plate sheet heat conductive material, facilitating efficient heat transfer and temperature control while maintaining a simple structure.
Implementation Method 1
a heat conductive material that thermally connects the one end side of the power storage device and the heat exchange member
Data Source
AI summary
A power storage module includes: a first holder including a first housing part that houses one end side of a power storage device, and an opening part passing through the first housing part; a second holder including a second housing part that houses another end side of the power storage device; a heat exchange member facing an end surface of the first holder; and a heat conductive material that thermally connects the one end side of the power storage device and the heat exchange member, the power storage device including a heat transfer mechanism on the one end side as a heat transfer structure used for the power storage module and a gas exhaust mechanism on the other end side. The heat transfer mechanism includes, on one end side, a protrusion that is insertable into the opening part, and the protrusion is thermally connected to the heat conductive material with being inserted into the opening part.