Through-Hole All-Solid Battery Structure for Heat Dissipation
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Solution Overview
Problem
Traditional cylindrical batteries have limited contact area, leading to inefficient heat dissipation and safety issues due to high power applications, while toroidal batteries are complex and pose safety risks with liquid electrolytes.
Innovation Solution
An all-solid battery design with a tubular casing and coaxial metallic conductors, featuring a through hole and tubular components, allowing for efficient heat dissipation and simplified assembly without liquid electrolytes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional cylindrical battery configuration is used with terminals on circular ends, then the structure is simple, but the contact area is limited and heat dissipation is inefficient
Solution Approach 1:
The patent transitions from a traditional cylindrical configuration with end-terminal contacts to a toroidal configuration with through-hole axial contacts. This dimensional change allows current to flow through the center of the battery along the axial direction, significantly increasing the effective contact area and improving heat dissipation efficiency without substantially increasing structural complexity
2Power
If toroidal-shaped cell with wound core and liquid electrolyte is used, then alternative high power configuration is provided, but the configuration becomes complex and safety issues arise from electrolyte leakage
Solution Approach 1:
The patent extracts and removes the liquid electrolyte component from the battery system, replacing it with a solid-state electrolyte. This eliminates the complexity of wound core structures and insulator requirements while resolving safety issues related to electrolyte leakage, maintaining high power capability through the toroidal configuration with through-hole contacts
3Power
If toroidal battery with liquid electrolyte is used, then high power application is supported, but safety issues and risk of failure increase due to electrolyte leakage
Solution Approach 1:
The patent changes the physical state parameter of the electrolyte from liquid to solid. This parameter change fundamentally improves safety and reliability by eliminating leakage risks associated with liquid electrolytes, while the toroidal configuration with through-hole contacts maintains the high power capability required for demanding applications
Data Source
AI summary
An all-solid battery including: a casing including a tubular body including a first through hole, an outer tubular surface and an inner tubular surface defining an internal volume of the tubular body, first and planar case portions each including a through hole arranged to match the first through hole of the tubular body; a first and second metallic conductors including a hollow tubular body and provided coaxially within the internal volume of the tubular body of the casing and provided adjacent to the outer tubular surface and the inner tubular surface of the tubular body of the casing, respectively; a first cell unit including a first cathode current collector, a first cathode adjacent to the cathode current collector, a first solid state electrolyte (SSE) adjacent to the first cathode, optionally a first anode adjacent to the first SSE, and a first anode current collector adjacent to the first anode.