Vehicle Battery Substructure Sealing Against Cooling Water Ingress
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Solution Overview
Problem
Existing vehicle substructures fail to prevent battery cells from being submerged by cooling water that leaks from a damaged water channel due to external impacts.
Innovation Solution
A vehicle substructure design featuring a battery cell housed in a housing case with a cover, a junction box, a supply pipe for refrigerant cooling, and multiple sealing members (ring-shaped water stop members and a waterproof case) to create a sealed space, ensuring double sealing at critical junctions to prevent water ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single sealing member is used between the cover and housing case, then the structure is simple and easy to manufacture, but the battery cell is vulnerable to water ingress when the water channel is damaged by external impact
Solution Approach 1:
The single sealing member is divided into multiple sealing members positioned at different locations. The first sealing member is arranged between the cover and housing case, while the second sealing member is arranged between the water channel and housing case, creating segmented protection zones that independently prevent water ingress from different potential leak points.
Solution Approach 2:
The patent implements protective sealing members at potential failure points before water ingress can occur. By pre-positioning sealing members at the interface between cover and housing case, and between water channel and housing case, the system prepares advance protection against external impacts that might damage the water channel.
2Reliability
If multiple sealing members are added to prevent water ingress, then protection reliability improves, but manufacturing complexity and assembly difficulty increase
Solution Approach 1:
The patent combines multiple sealing functions into the overall assembly process by positioning both sealing members during the same assembly operation. The first sealing member is installed between the cover and housing case, while the second sealing member is installed between the water channel and housing case, allowing simultaneous sealing of multiple critical interfaces in one manufacturing cycle.
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 prevents battery cells from being flooded by cooling water even when the water channel is damaged, maintaining the integrity of the battery system under external impacts.
Implementation Method 1
a supply pipe for supplying a refrigerant for cooling the junction box and the battery cell
Implementation Method 2
a first member covering the supply pipe, a second member for blocking an opposing surface where the supply pipe and the junction box face each other, and a third member for blocking an opposing surface where the supply pipe and the battery cell face each other
Data Source
AI summary
A vehicle substructure includes: a battery cell; a housing case having an opening and accommodating the battery cell; a cover attached to the housing case in a state of covering the opening; a junction box, provided on top of the cover, for controlling the battery cell; a supply pipe for supplying a refrigerant for cooling the junction box and the battery cell; a first member covering the supply pipe, a second member for blocking an opposing surface where the supply pipe and the junction box face each other; and a third member for blocking an opposing surface where the supply pipe and the battery cell face each other.