High Emissivity Coating for Battery Thermal Management
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Solution Overview
Problem
Valve-regulated lead-acid batteries face severe overheating issues due to limited heat dissipation, leading to reduced cycle life and potential damage, especially in high-rate and large-scale applications, where conventional thermal management solutions are inadequate and complex, increasing system costs.
Innovation Solution
Applying a heat dissipation coating of high emissivity, containing nano particles like carbon nanotubes, onto exposed surfaces such as terminal posts and electrical connection elements to enhance heat transfer through radiation, convection, and thermal conduction, reducing operating temperatures and prolonging battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional thermal management solutions are used for valve-regulated lead-acid batteries, then heat dissipation capability is improved, but system complexity and cost increase
Solution Approach 1:
The patent applies a heat dissipation coating with high emissivity (ε≥0.85) on the external surface of the battery, changing the thermal radiation parameter of the surface. This allows the battery to dissipate heat more efficiently through enhanced thermal radiation without adding complex thermal management systems, thereby resolving the contradiction between heat dissipation capability and system complexity
Solution Approach 2:
The patent uses a simple coating layer applied on the battery surface as a low-cost, easy-to-apply solution rather than installing complex and expensive thermal management systems. The coating provides effective heat dissipation enhancement at minimal cost and structural complexity
2Temperature
If battery size is increased to reduce discharge rate, then overheating is reduced, but system cost increases
Solution Approach 1:
Instead of increasing battery size to reduce discharge rate and overheating, the patent changes the thermal radiation parameter by applying a high emissivity coating on the existing battery surface. This allows the same battery size to dissipate heat more effectively, preventing overheating without increasing volume or cost
3Volume of stationary object
If valve-regulated type batteries are used, then space utilization is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The patent compensates for the poor heat dissipation capability of valve-regulated batteries by changing the thermal radiation parameter of their external surface through high emissivity coating. This allows compact valve-regulated batteries to maintain their space-efficient design while achieving improved heat dissipation through enhanced thermal radiation
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 heat dissipation coating effectively reduces operating temperatures and prolongs the lifespan of energy storage systems by accelerating heat transfer from internal components to the surroundings, improving the heat dissipation efficiency and simplifying installation and maintenance.
Implementation Method 1
enhance heat transfer through radiation, convection, and thermal conduction
Implementation Method 2
enhance heat transfer through radiation, convection, and thermal conduction
Implementation Method 3
enhance heat transfer through radiation, convection, and thermal conduction
Implementation Method 4
heat dissipation coating of high emissivity, containing nano particles like carbon nanotubes
Data Source
AI summary
The present invention discloses an overheat prevention energy storage system preventing self from overheating, comprising a heat dissipating external surface, wherein at least a portion of the external surface is coated with at least one layer of heat dissipation coating of high emissivity. The present invention further discloses a method for preventing overheat of the energy storage system and a method for forming at least one layer of heat dissipation coating of high emissivity onto at least part of an external surface of the energy storage system or assemblies thereof.