Battery Module Wire Routing via Vent Isolation
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Solution Overview
Problem
Existing battery modules face challenges in preventing damage to wires and ensuring stability when gas is exhausted through vents, as the wires are often positioned to overlap with the vent holes, risking electrical contact and potential fires.
Innovation Solution
The battery module design includes a wire hole that does not overlap with the vent hole, with wire supporting portions providing a connection path that traverses the vent hole, keeping the wires isolated from the gas exhaust and using a structure where only the top side is open to prevent damage and ensure stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wires are positioned to overlap with vent holes for simplified routing, then device complexity is reduced, but wire damage and fire risk increase due to exposure to gas exhaust
Solution Approach 1:
A wire supporting portion is introduced as an intermediary component between the wires and the vent hole. This supporting portion provides a protected path for wires to pass through, isolating them from the gas exhaust while maintaining simplified routing. The wire supporting portion acts as a mediator that resolves the conflict between simple wire placement and wire protection from harmful gas exposure.
2Reliability
If wires are isolated from vent holes using supporting structures, then wire safety is improved, but device complexity increases due to additional components
Solution Approach 1:
The wire supporting portion is merged with the middle cover structure, integrating the wire support function into the existing cover component. This merging approach provides wire protection without requiring completely separate additional structures, thereby improving wire safety while minimizing the increase in overall device complexity.
3Reliability
If the wire supporting portion is fully enclosed to protect wires, then wire protection is improved, but gas exhaust flow is blocked
Solution Approach 1:
The wire supporting portion is designed with selective openness: it is enclosed in regions where wire protection is needed while remaining open in regions where gas exhaust flow must pass through. This local quality differentiation allows the structure to simultaneously protect wires from damage and maintain unobstructed gas exhaust pathways, resolving the contradiction between protection and flow.
Data Source
AI summary
A battery module includes a battery block including a plurality of battery cells, each including a positive electrode terminal and a negative electrode terminal, and a vent between the positive electrode terminal and the negative electrode terminal and a middle cover including a plurality of bus-bars at one edge and at an other edge of the middle cover, the middle cover being connectable to the positive and negative electrode terminals. The middle cover may include a first barrier and a second barrier located such that the vent is between the first barrier and the second barrier and a third barrier between the bus-bars located at the other edge and the second barrier.