Battery Pack Upper Case Venting and Vibration Isolation
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Solution Overview
Problem
Existing power storage devices struggle with vibration isolation and efficient gas discharge from power storage modules, leading to suboptimal performance in vehicle-mounted applications.
Innovation Solution
The power storage device incorporates a housing case with a unique upper case design, featuring one-side, other-side, and center-side top plate portions, supported by first and second support members. This configuration enhances vibration isolation and ensures a sufficient exhaust path for gas discharge through strategically placed exhaust valves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the support member is provided to support the center portion of the upper case, then the upper case is supported, but the vibration isolation property of the upper case is insufficient
Solution Approach 1:
The support structure is divided into multiple support members (first support members and second support members) positioned at different locations beneath the upper case. This segmentation allows each support member to independently dampen vibrations, providing comprehensive vibration isolation across the entire upper case structure rather than concentrating support at a single center point.
2Volume of stationary object
If the housing case configuration is compact, then space is utilized efficiently, but the exhaust path for gas discharged from the power storage module is insufficient
Solution Approach 1:
The exhaust path is optimized by utilizing the vertical dimension through the layered support member configuration. The first and second support members create vertical spacing and channels that serve as exhaust pathways, allowing gas to escape upward and outward without requiring additional horizontal space, thus maintaining compact housing volume while ensuring adequate gas discharge capability.
Data Source
AI summary
A power storage device includes: a plurality of power storage modules arranged in a first direction; a housing case including an upper case; and a plurality of support members, an exhaust valve is provided on one side, in the first direction, of the upper case, the upper case includes a one-side top plate portion, an other-side top plate portion, and a center-side top plate portion that are located, in a second direction, on one side, on the other side, and in a center portion, respectively, the center-side top plate portion protrudes upward relative to the one-side top plate portion and the other-side top plate portion, and the plurality of support members include first support members supporting the one-side top plate portion and the other-side top plate portion, and a second support member supporting the center-side top plate portion.