Vehicle Battery Case Venting With Boarding Space Heat Insulation
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Solution Overview
Problem
Conventional power storage devices in vehicles transfer heat from the gas-discharge path to the boarding space due to the high temperature of the discharged gas, posing a risk of overheating.
Innovation Solution
Incorporating a heat insulating member between the gas-discharge path wall portions and the boarding space, as well as between the accommodation case and the vehicle's frame, to prevent heat transfer from the discharged gas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power storage device uses a gas-discharge path through wall portions to vent high-temperature gas from power storage stacks, then the gas can be discharged effectively, but heat is transferred to the boarding space causing overheating risk
Solution Approach 1:
The patent introduces a heat insulating member as an intermediary substance between the wall portions (which contain the gas-discharge path) and the boarding space. This heat insulating member acts as a thermal barrier that blocks heat transfer from the hot gas-discharge path to the boarding space, while allowing the gas discharge function to operate normally through the wall portions.
2Ease of manufacture
If the accommodation case structure is simplified without heat insulation, then manufacturing cost and complexity are reduced, but the boarding space is exposed to high temperature from discharged gas
Solution Approach 1:
The heat insulating member serves as a thermal intermediary that can be added to the accommodation case structure without fundamentally changing its design. It provides the necessary thermal protection to the boarding space while maintaining the simplicity and manufacturability of the overall accommodation case structure.
Solution Approach 2:
The accommodation case is constructed using composite materials or multi-layer structure, where the wall portions are combined with a heat insulating member layer. This composite structure allows the case to maintain its structural integrity and gas discharge functionality while adding thermal insulation properties to protect the boarding space.
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
Effectively suppresses heat transfer from the gas-discharge path to the boarding space, maintaining a comfortable temperature environment within the vehicle.
Implementation Method 1
A heat insulating member is disposed between each of the plurality of wall portions and the boarding space
Data Source
AI summary
A vehicle includes: a vehicle body provided with a boarding space; and a power storage device disposed below the boarding space, wherein the power storage device includes one or more power storage stacks and an accommodation case that accommodates the one or more power storage stacks, the accommodation case has a lower case in which the one or more power storage stacks are disposed, and a plurality of wall portions that partition a region in which the one or more power storage stacks are disposed, a gas-discharge path through which gas discharged from the one or more power storage stacks is flowable is provided inside each of the plurality of wall portions, and a heat insulating member is disposed between each of the plurality of wall portions and the boarding space.