Battery Pack Housing with Integrated Beams and Circulation Passages
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Solution Overview
Problem
Existing battery packs face challenges in achieving uniform heat dissipation and protecting battery cells from impacts due to inadequate air circulation and lack of structural rigidity in their housing designs.
Innovation Solution
A battery pack design featuring a housing with a circulation passage system that ensures air flows effectively around each battery cell, combined with reinforcing beams to enhance structural integrity and protect against impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a circulation passage is provided in the housing to cool the batteries, then heat dissipation is improved, but air may take shortcuts and fail to reach every battery, reducing cooling effectiveness
Solution Approach 1:
The circulation passage is segmented into multiple distinct sections: a first passage between the battery assembly and housing wall for heat dissipation, and a second passage surrounded by beams for returning air to the fan. This segmentation ensures air flows through designated paths and prevents shortcuts, improving cooling effectiveness while maintaining manageable complexity.
2Ease of manufacture
If the housing is made simpler without additional reinforcement structures, then manufacturing ease is improved, but the housing cannot protect battery cells against impacts
Solution Approach 1:
The beams are designed to serve multiple functions simultaneously: they provide structural reinforcement to protect batteries from impacts, define the second circulation passage for air flow, and support the battery assembly from below. This multi-functionality achieves impact protection without adding separate reinforcement structures, maintaining manufacturing simplicity.
3Temperature
If air circulation is optimized to reach every battery, then cooling effectiveness is improved, but energy consumption and noise increase
Solution Approach 1:
The circulation passage design allows air to naturally flow from the first passage through the battery assembly and return via the second passage surrounded by beams. The beams act as flow guides that direct air without requiring additional active control mechanisms, reducing fan energy consumption and noise while maintaining effective cooling coverage.
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 achieves efficient heat dissipation and effective protection of battery cells from impacts, while reducing noise and energy consumption by optimizing air circulation and using beams for both reinforcement and passage definition.
Implementation Method 1
a circulation passage provided in the housing and forming a series of flow channels for a fluid flowing out from the fluid drive member to flow back into the fluid drive member after exchanging heat with the batteries
Implementation Method 2
a first fluid passage provided between the battery assembly and a wall of the housing to be a heat dissipation portion which dissipates heat to an outside of the housing by contact with the fluid flowing out from the fluid drive member
Data Source
AI summary
A battery pack includes: a battery assembly including a plurality of batteries; a fluid drive member driving a fluid which cools the battery assembly; a housing that houses the battery assembly and the fluid drive member; and a beam provided integrally with a bottom wall of the housing to support the battery assembly from a lower side. A circulation passage provided in the housing includes: a first fluid passage between the battery assembly and a side wall of the housing; a battery passage between the batteries; and a second fluid passage downstream of the battery passage and extending toward the fluid drive member. The second fluid passage is surrounded by at least the beams, the bottom wall, and a lower end of the battery assembly.