Battery Pack Case With Resin Airflow Path and Metal Cell Support
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Solution Overview
Problem
Conventional battery pack cases lack effective cooling air flow paths, leading to increased weight and complexity when metal housing parts are configured to include cooling air flow paths.
Innovation Solution
A battery pack case design that integrates a resin flow path forming part with metal battery cell housing parts, creating a cooling air flow path without increasing weight or complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the battery cell housing part is made of metal and the entire cooling air flow path is provided in the battery cell housing part, then the cooling air flow path can be ensured, but the configuration becomes complex and the weight increases
Solution Approach 1:
The battery pack case is divided into two functional parts: the battery cell housing part made of metal and the flow path forming part made of resin. The flow path forming part is integrally provided with the battery cell housing part and configures a portion of the cooling air flow path. This segmentation allows the metal housing to maintain structural integrity while the resin flow path forming part provides the cooling function, thereby reducing configuration complexity and weight while ensuring effective cooling air flow.
2Temperature
If the battery cell housing part is made of metal and the entire cooling air flow path is provided in the battery cell housing part, then the cooling air flow path can be ensured, but the weight of the battery pack case increases
Solution Approach 1:
The battery pack case utilizes composite materials by combining metal (for the battery cell housing part requiring strength and rigidity) and resin (for the flow path forming part requiring complex shape and light weight). The flow path forming part made of resin is integrally provided with the metal battery cell housing part, creating a composite structure that reduces overall weight while maintaining both structural integrity and cooling functionality.
3Temperature
If the battery cell housing part is made of metal and the entire cooling air flow path is provided in the battery cell housing part, then the cooling air flow path can be ensured, but the battery cell housing part needs to be configured as a cast product which increases weight
Solution Approach 1:
The battery pack case is divided into two functional parts: the battery cell housing part made of metal and the flow path forming part made of resin. The flow path forming part is integrally provided with the battery cell housing part and configures a portion of the cooling air flow path. This segmentation allows the metal housing to maintain structural integrity while the resin flow path forming part provides the cooling function, thereby reducing configuration complexity and weight while ensuring effective cooling air flow.
Data Source
AI summary
A battery pack case includes a metal housing assembly accommodating, from one side in a second direction, battery cells stacked in a first direction perpendicularly intersecting the second direction, the assembly supporting a restoring force of the battery cells; and a resin flow path forming member, integral with the assembly and disposed at another side of the battery cells, and configuring a cooling air flow path. The assembly includes a first component including a pair of first side wall parts support the battery cells in a third direction perpendicularly intersecting the first and second directions, and a support wall part supporting the battery cells from the other side in the second direction; and a pair of second components, including a second side wall part supporting the battery cells in the first direction, and a pair of third side wall parts provided continuously with the second side wall part.