Bus Bar Module Voltage Detecting Line Inclination
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Solution Overview
Problem
Assembled batteries can experience electrical continuity issues due to condensation, which increases humidity and leads to water accumulation, potentially causing short circuits between voltage detecting lines and cells, and existing solutions that prevent this, such as using isolating members, increase costs and prevent size reduction.
Innovation Solution
A bus bar module with a housing portion for bus bars and voltage detecting lines, where the lines are placed diagonally relative to the bus bar housing portion, supported by a conductive member with an insulating extending support that includes a discharge port and guide rib to direct water away from critical areas, reducing the need for additional supporting structures and minimizing part count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If isolating members with liquid-receiving baths are used to prevent condensation-related short circuits, then reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the isolating member and water discharge function into a single integrated structure. The isolating member includes a water discharge port that allows condensation water to be discharged outward, eliminating the need for separate liquid-receiving baths while maintaining prevention of electrical continuity between battery modules.
Solution Approach 2:
The patent extracts the water discharge function from the traditional liquid-receiving bath structure and integrates it into the isolating member itself. By providing a water discharge port in the isolating member, the system removes the need for additional containing structures while still managing condensation water effectively.
2Ease of manufacture
If traditional horizontal placement of voltage detecting lines is used, then manufacturing is simpler, but condensation water causes electrical continuity
Solution Approach 1:
The patent changes the symmetric horizontal placement of voltage detecting lines to an asymmetric inclined arrangement. The lines are placed at an inclination angle of 5-45 degrees relative to the horizontal direction, creating an asymmetric layout that prevents condensation water from causing electrical continuity while remaining manufacturable.
Solution Approach 2:
The patent changes the placement angle parameter of voltage detecting lines from horizontal (0 degrees) to inclined (5-45 degrees). This parameter change alters the interaction between condensation water and the detecting lines, preventing water accumulation that would cause electrical continuity while maintaining manufacturing feasibility.
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
Prevents electrical continuity caused by condensation while maintaining a compact design and low cost by effectively guiding water away from sensitive areas, thus avoiding short circuits and reducing the number of parts required.
Implementation Method 1
a guide rib guiding water flowed from the plurality of voltage detecting lines toward the discharge port
Data Source
AI summary
A bus bar module has a bus bar housing portion housing a plurality of bus bars placed side by side in a first direction, and a plurality of voltage detecting lines extending in the first direction and each connected electrically to a different one of the bus bars through a conductive member. The plurality of voltage detecting lines are placed adjacently to the bus bar housing portion and are placed diagonally in a second direction inclined relative to an in-plane direction including the bus bar such that a first region in the plurality of voltage detecting lines separate from the bus bar housing portion is located below a second region in the plurality of voltage detecting lines closer to the bus bar housing portion.