Tubular All-Solid Battery Structure for Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional cylindrical batteries have limited contact area and inefficient heat dissipation due to battery contact resistance, leading to safety issues and potential failure in 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 solid electrolyte, allowing for efficient heat dissipation and simplified assembly without insulators, reducing complexity and safety risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional cylindrical battery configuration is used, then the battery structure is simple, but the contact area is limited and heat dissipation is inefficient
Solution Approach 1:
The patent transitions from a traditional planar contact configuration to a three-dimensional tubular configuration with through-holes. The electrodes and current collectors are shaped as tubes with circular cross-sections, allowing current to flow through the entire circumference rather than just at edges or surfaces. This dimensional change dramatically increases the effective contact area for heat dissipation while maintaining structural simplicity.
2Power
If toroidal battery configuration is used, then alternative high power design is achieved, but the configuration becomes complex and requires multiple insulators
Solution Approach 1:
The patent extracts and removes all insulating components from the battery structure. By using a solid electrolyte that inherently provides both ionic conduction and electrical insulation, the design eliminates the need for separate insulator layers between electrodes and case components. This extraction of unnecessary elements simplifies the overall configuration while maintaining high power capability through the tubular geometry.
Solution Approach 2:
The solid electrolyte in the patent serves multiple functions simultaneously: it acts as the ionic conductor between electrodes, provides electrical insulation to prevent short circuits, and serves as the structural medium filling the tubular space. This multi-functionality eliminates the need for separate insulator components and simplifies the overall battery design while enabling high power applications.
3Reliability
If liquid electrolyte is used, then ionic conduction is achieved, but safety issues arise due to possible electrolyte leakage
Solution Approach 1:
The patent changes the physical state parameter of the electrolyte from liquid to solid. This phase change fundamentally alters the safety characteristics: solid electrolytes have fixed shapes, cannot leak, and provide inherent structural stability. The solid state maintains ionic conduction capability while eliminating all leakage risks associated with liquid electrolytes, thereby dramatically improving safety and reliability.
4Reliability
If traditional battery configuration is used, then manufacturing is simple, but contact resistance leads to safety issues in high power applications
Solution Approach 1:
The patent segments the battery into distinct modular components: tubular case with through-holes, tubular electrodes, tubular current collectors, and solid electrolyte. Each component is manufactured separately with precise dimensional control, then assembled by inserting electrodes and electrolyte into the case. This segmentation enables high power performance through increased contact area while maintaining manufacturing simplicity through modular assembly rather than complex integrated fabrication.
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
The design enhances volumetric and gravimetric energy density, simplifies assembly, and reduces the risk of short-circuiting, making it suitable for high power applications with improved safety and cost-effectiveness.
Implementation Method 1
The first cell unit comprises a first cathode current collector, a first cathode, a first solid state electrolyte (SSE), optionally a first anode, and a first anode current collector
Implementation Method 2
heat generated in high power applications due to the battery contact resistance cannot be dissipated efficiently enough, leading to safety issues
Data Source
Figure 1~2B
Figure 3~4
Figure 5~6B
AI summary
The present invention relates to an all-solid battery comprising: a casing comprising a tubular body comprising 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 comprising a through hole arranged to match the first through hole of the tubular body; a first and second metallic conductors comprising 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 comprising 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, wherein each component of the first cell unit comprises a hollow tubular body and is provided coaxially within the internal volume of the tubular body of the casing.