Cylindrical Battery Insulation Spacing for Short-Circuit Prevention
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Solution Overview
Problem
Adjacent batteries in battery devices are prone to short-circuiting, which affects their energy density, heat dissipation, and coating efficiency.
Innovation Solution
Adjusting the relationship between the minimum distance (h1) between adjacent cylindrical batteries and the thickness (d) of the insulating coating to ensure d*h1 is within the range of 0.04 mm² to 0.64 mm², thereby reducing the risk of short circuits while improving energy density and heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the minimum distance h1 between adjacent cylindrical batteries is reduced, then the energy density is improved, but the risk of short circuit between batteries increases
Solution Approach 1:
The patent applies parameter changes by establishing a quantitative relationship between the minimum distance h1 and insulating coating thickness d, specifically defining that their product d*h1 should be greater than 0.04mm². This parameter optimization allows the battery arrangement to achieve high energy density while maintaining adequate insulation, thus resolving the contradiction between reducing distance for higher density and maintaining distance for safety.
2Reliability
If the thickness d of insulating coating is increased, then the insulation performance is improved, but the coating efficiency and space utilization deteriorate
Solution Approach 1:
The patent optimizes the insulating coating thickness parameter d by establishing its quantitative relationship with the minimum distance h1 through the product d*h1>0.04mm². This parameter optimization ensures adequate insulation performance while avoiding excessive coating thickness that would reduce coating efficiency and space utilization, thus resolving the contradiction between insulation performance and coating efficiency.
3Volume of stationary object
If the minimum distance h1 between adjacent cylindrical batteries is reduced, then the space utilization is improved, but the heat dissipation performance deteriorates
Solution Approach 1:
The patent applies parameter changes by defining the optimal relationship d*h1>0.04mm², which allows for reduced minimum distance h1 to improve space utilization while the corresponding insulating coating thickness d compensates to maintain adequate heat dissipation pathways, thus resolving the contradiction between space utilization and heat dissipation performance.
Data Source
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AI summary
A battery device is provided, the battery device including: a plurality of cylindrical batteries (1), the cylindrical battery (1) including a battery housing (11) and an insulating coating (2) formed on an outer surface of the battery housing (11), wherein a minimum distance between adjacent cylindrical batteries (1) is h1, a thickness of the insulating coating (2) is d, and d*h1 is 0.04 mm2-0.64 mm2. The battery device can improve an insulation effect between cylindrical batteries on the premise of ensuring energy density of the battery device.