Stacked Battery Insulating Board and Metal Pattern Integration
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Solution Overview
Problem
Existing stacked battery designs struggle to maintain compact dimensions due to the presence of insulating boards and metal patterns, which hinder efficient stacking and connectivity between cells.
Innovation Solution
A stacked battery design featuring a specific arrangement of electrode current collectors and insulating materials, where the positive and negative electrode current collectors extend in the stacking direction and are positioned to avoid overlapping with each other and the insulating materials, allowing for compact stacking and easy parallel connection of cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulating boards and metal patterns are arranged between stacked cells, then electrical insulation is ensured, but the dimensions in the stacking direction increase
Solution Approach 1:
The patent combines the insulating board and metal pattern into a single integrated component. The insulating board has a recess that directly receives the metal pattern, eliminating the need for separate arrangements and reducing the overall thickness in the stacking direction while maintaining both insulation and electrical connection functions
Solution Approach 2:
The metal pattern is nested within the recess of the insulating board. This nesting arrangement allows the metal pattern to be positioned within the insulating board's structure rather than adding external layers, thereby reducing the dimension in the stacking direction while preserving both insulation and conductivity functions
2Reliability
If multiple insulating boards and metal patterns are arranged for stacking cells, then electrical insulation and connectivity are achieved, but the structural complexity increases
Solution Approach 1:
The insulating board with integrated metal pattern serves multiple functions simultaneously: it provides electrical insulation between cells, establishes electrical connectivity through the metal pattern, and provides structural support. This multi-functionality reduces the number of separate components needed and simplifies the overall structure
Solution Approach 2:
By merging the insulating board and metal pattern into a single integrated component, the patent reduces the number of parts that need to be assembled and managed. This integration simplifies the stacking process and reduces structural complexity while maintaining both insulation and connectivity functions
Data Source
Figure 1A~1C
Figure 2A~2B
Figure 3
AI summary
A stacked battery includes a stack of cells each having an electrode body including positive electrode current collector, positive electrode, electrolyte, negative electrode, and negative electrode current collector stacked in that order, a first insulating material arranged on an opposite side of the positive electrode across a first part of the positive electrode current collector, and a second insulating material arranged on an opposite side of the negative electrode across a first part of the negative electrode current collector, the positive electrode current collector has the first part of the positive electrode current collector, a second part of the positive electrode current collector, and a third part of the positive electrode current collector, the negative electrode current collector has the first part of the negative electrode current collector, a second part of the negative electrode current collector, and a third part of the negative electrode current collector.