Vehicle Lower Structure Cover for Battery Vent Gas Shielding
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Solution Overview
Problem
Existing vehicle lower portion structures fail to prevent gas discharged from a pressure release valve from contacting cables, potentially causing damage.
Innovation Solution
A cover is provided between the pressure release valve and the cable to prevent gas discharge from contacting the cable, featuring an interposed portion and a restriction portion to block the gas flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cable is installed near the battery pack explosion-proof valve to simplify wiring, then the ease of operation is improved, but the cable may be damaged by discharged gas
Solution Approach 1:
A cover is introduced as an intermediary component between the pressure release valve and the cable. The cover includes a restriction portion that blocks the direct path of discharged gas to the cable, while still allowing the cable to be routed nearby for convenient wiring. This mediator structure enables both easy cable installation and cable protection from harmful gas discharge.
2Volume of moving object
If the cable is routed close to the power storage device to reduce space usage, then the volume is reduced, but the cable is exposed to discharged gas
Solution Approach 1:
The cover acts as a protective intermediary that enables the cable to be routed close to the power storage device for compact space utilization, while simultaneously blocking discharged gas from reaching the cable. The restriction portion of the cover creates a physical barrier that maintains close proximity routing without exposing the cable to harmful gases.
3Device complexity
If no cover is provided to maintain simple structure, then the device complexity is reduced, but the cable may be damaged by gas discharge
Solution Approach 1:
The cover is designed as a relatively simple intermediary component that blocks gas discharge paths without significantly increasing overall device complexity. The restriction portion is integrated into the cover structure, providing cable protection through a straightforward geometric design that minimizes additional complexity while ensuring reliable gas blocking.
Data Source
AI summary
A vehicle lower portion structure includes: a power storage device including at least one power storage stack, a case that houses the at least one power storage stack, and a pressure release valve provided on a top surface of the case; a cable provided above the power storage device; and a cover provided between the pressure release valve and the cable.