Battery Module Container Step Structure for Water Ingress Control
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Solution Overview
Problem
Conventional battery module containers are susceptible to water ingress during adverse weather conditions, leading to humidity and condensation, which increases the risk of electric arcing, and handling is complicated by protruding seals that impede module placement.
Innovation Solution
A container design with a floor support featuring a step between the longitudinal member and the upper surface, creating a water-receiving volume below the floor level to collect runoff water and prevent contamination, while maintaining easy handling of battery modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sloping protruding seal is fitted to the floor to block water entry, then water protection is improved, but module handling becomes complicated due to the protruding part
Solution Approach 1:
The water-blocking function is extracted from the floor surface and relocated to a dedicated water-receiving volume formed by the step structure. The step creates a depression that collects water away from the floor surface, separating the water protection function from the module placement surface, thus eliminating the need for protruding seals that would obstruct module handling.
Solution Approach 2:
The step structure acts as an intermediary element between the door and the floor. It creates a water-receiving volume that intercepts water running down the door before the water can reach the floor surface where modules are placed, thus protecting the modules without requiring protruding seals on the floor itself.
2Reliability
If modules are raised relative to the floor to prevent water contact, then water protection is improved, but the number of modules that can be stored is reduced
Solution Approach 1:
The water protection function is extracted from the module placement surface and implemented through a separate step structure with a water-receiving volume. This allows the floor surface to remain flat and at its original height, maximizing the storage volume for modules while still providing effective water protection through the stepped depression that collects and contains water away from the modules.
3Device complexity
If the lower edge of the door is flush with the floor surface, then door closure is simple, but water can run off onto the floor when the door is moved
Solution Approach 1:
The step structure creates a water-receiving volume that preliminarily captures water running down the door before it can reach the floor. The step acts as a preliminary barrier that intercepts water flow, preventing it from contacting the module placement surface, thus maintaining simple door construction while achieving reliable water protection.
Data Source
AI summary
This container includes a structure comprising a floor support with two longitudinal stringers and crossmembers connecting same, each longitudinal member having an upper face, a floor having an upper support surface for supporting said modules and extending up to the lateral edges facing the longitudinal members, peripheral walls, at least one of which defines a door (92A) movable between a closed position in which a lower edge is facing said upper face and an open position, and a roof above the peripheral walls.Along the lower edge of the door in the closed position, the lateral edge of said upper surface extends to a height above that of said upper face, the floor support defining a step between said face and upper surface, delimiting a water-receiving volume.