Power Storage Module Cooling Member Segmentation
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Solution Overview
Problem
Conventional power storage module configurations require a sealed pack case for coolant evaporation and condensation, making it difficult to simplify the module's configuration.
Innovation Solution
A power storage module design featuring cooling members with sealed coolants and a heat dissipation member that includes spacer portions to enhance heat transfer, allowing for improved heat dissipation without the need for a sealed case, and optionally incorporating a heat equalization plate to further improve conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the coolant is charged in the pack case for evaporation and condensation, then heat dissipation is achieved, but the pack case must be sealed which increases device complexity
Solution Approach 1:
The invention divides the cooling function into separate cooling members that are stacked on individual power storage elements, rather than using a single sealed pack case. Each cooling member contains its own coolant in a sealing body, allowing modular heat dissipation without requiring the entire pack case to be sealed.
Solution Approach 2:
The invention extracts the coolant containment function from the pack case by placing sealed coolants directly within cooling members. This removes the requirement for the pack case to be sealed, thereby simplifying the overall configuration while maintaining heat dissipation capability.
2Temperature
If the sealing body deforms to form a bulging portion, then heat dissipation space is created, but poor heat conductivity occurs in low heat conductivity environments
Solution Approach 1:
The spacer portion acts as an intermediary component between the bulging portion and the heat dissipation member. It provides a stable thermal conduction path that compensates for the poor heat conductivity of the deformed sealing body, ensuring reliable heat transfer from the cooling member to the heat dissipation member.
Solution Approach 2:
The invention introduces a spacer portion with high heat conductivity at the specific location where heat transfer is needed (between the bulging portion and heat dissipation member). This local enhancement of thermal conductivity ensures efficient heat dissipation without requiring the entire sealing body to maintain high thermal conductivity.
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
This design simplifies the power storage module configuration by enabling effective heat dissipation through sealed coolants and improved heat transfer, while maintaining or enhancing the heat dissipation properties, even in low conductivity environments.
Implementation Method 1
a cooling member 20 that has a coolant 21 and a sealing body 25 hermetically sealing the coolant 21, is stacked on the power storage element 11... caused by evaporation of the coolant 21
Implementation Method 2
When a coolant charged in the lower portion of the pack case becomes evaporated and condensed in the upper portion of the pack case, heat of the battery is dissipated to the outside
Implementation Method 3
a heat dissipation member 40 that receives heat of the plurality of cooling members 20 and dissipates the heat to an outside... the heat of the power storage elements is transmitted from the cooling members to the heat dissipation member
Data Source
AI summary
A power storage module includes: a plurality of power storage elements; a plurality of cooling members each of which has a coolant and a sealing body hermetically sealing the coolant, is stacked on the power storage element, and is configured to form a bulging portion by deformation of the sealing body caused by evaporation of the coolant at an extension portion extending in a region not overlapping the power storage element; and a heat dissipation member that receives heat of the plurality of cooling members and dissipates the heat to an outside. The heat dissipation member has a spacer portion that is disposed between the adjacent extension portions of the plurality of cooling members and is configured to abut with the bulging portion.