PCB Battery Contact Layout for Corrosion-Protected Cell Connections
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Solution Overview
Problem
Existing battery arrangements face challenges in corrosion protection and complex assembly processes, particularly due to the use of different materials like aluminum and copper, which can lead to corrosion issues.
Innovation Solution
The battery arrangement incorporates a printed circuit board with insulating covering layers that protect the fastening points between cell connectors and connection poles, ensuring corrosion protection and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different materials (aluminum cell connectors and copper cable harness) are connected to one another, then electrical connectivity is achieved, but corrosion problems occur at the fastening points
Solution Approach 1:
The patent introduces an intermediate insulating component (support plate or insulating housing) between the aluminum cell connector and the copper cable harness. This intermediary element prevents direct contact between the dissimilar metals, eliminating the galvanic corrosion pathway while maintaining electrical connectivity through the aluminum connector to the battery cell
Solution Approach 2:
The patent extracts the harmful direct metal-to-metal contact between aluminum and copper by removing one of the materials from the interface. The insulating component is positioned to take out the copper from direct contact with aluminum, separating the two materials spatially to prevent corrosion
2Ease of operation
If additional connecting elements and orientation elements are added to establish spatial orientation between signal lines and cell connectors, then quick and exact locational arrangement is achieved, but installation and assembly effort increases
Solution Approach 1:
The patent merges the support plate with the insulating housing into a single integrated component. This combination eliminates the need for separate orientation elements and connecting elements, as the integrated structure provides both support and spatial orientation functions, thereby reducing assembly steps while maintaining precise locational arrangement
Solution Approach 2:
The integrated support plate/housing structure serves multiple functions simultaneously: it provides mechanical support for the cable harness, establishes spatial orientation between signal lines and cell connectors, and provides corrosion protection. This multi-functionality eliminates the need for multiple separate components
Data Source
AI summary
A battery arrangement comprising a large number or plurality of energy storage cells, wherein the energy storage cells have connection poles to which cell connectors are fastened, in particular welded, for interconnecting the energy storage cells. The energy storage cells are connected to a contact-making system which is formed by a printed circuit board having a covering layer on both sides, wherein the printed circuit board is arranged between the connection poles and the cell connectors in such a way that the fastening points, in particular the welding points, by way of which the cell connectors are indirectly connected to the connection poles via the printed circuit board are protected against external influences by the covering layers.