EV Coolant Composition for Low-Conductivity Corrosion Control
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Solution Overview
Problem
Conventional heat transfer fluids are unsuitable for alternative power sources, particularly electricity-based ones, as they can cause electric shock, increased corrosion, and short circuits due to high electrical conductivity.
Innovation Solution
A coolant composition comprising a solvent, such as water or glycols, an organic acid or its salt, and an azole, specifically designed to minimize electrical conductivity and prevent corrosion, is developed for electric vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heat transfer fluids with high electrical conductivity are used, then heat transfer efficiency is improved, but electrical safety deteriorates causing electric shock and short circuits
Solution Approach 1:
The patent fundamentally changes the electrical conductivity parameter of the heat transfer fluid by replacing conventional high-conductivity water-based fluids with low-conductivity organic compounds (conductivity < 100 μS/cm, preferably < 10 μS/cm). This parameter change resolves the contradiction by maintaining adequate heat transfer capability while eliminating electrical conductivity-related safety hazards.
Solution Approach 2:
The patent introduces organic compounds as intermediary substances that mediate between the conflicting requirements of heat transfer and electrical safety. These organic fluids serve as the heat transfer medium while inherently providing electrical insulation, thus resolving the contradiction without requiring additional protective systems.
2Temperature
If conventional heat transfer fluids are used, then cooling capability is improved, but corrosion resistance deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters by selecting organic compounds with specific molecular structures that inherently provide both adequate heat transfer capability and superior corrosion resistance. The organic fluid composition is specifically selected to avoid the corrosion problems associated with conventional water-based or ionic heat transfer fluids.
3Temperature
If heat transfer systems are added to alternative power sources, then temperature control is improved, but device complexity increases
Solution Approach 1:
The patent uses low-conductivity organic compounds as intermediary heat transfer fluids that enable effective thermal management while minimizing the need for additional protective systems against electrical shock and corrosion. This single fluid simultaneously addresses multiple concerns, thereby controlling temperature without proportionally increasing system complexity.
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 coolant composition effectively controls heat generation in electric vehicle components, ensuring durability and stability while providing excellent corrosion resistance with minimal precipitation formation, thus preventing electrical issues.
Implementation Method 1
A heat transfer system in thermal communication with a power source is used to control the heat generated during operation of the power source
Implementation Method 2
automobiles employ heat transfer fluids and cooling systems that transfer and dissipate heat generated as a by-product of the operation of gasoline internal combustion engines
Data Source
AI summary
The present disclosure relates to a cooling liquid composition for an electric vehicle. The purpose of the composition according to the present disclosure is to effectively control heat generated during the operation of electronic components which are constituent elements of the electric vehicle, thereby enhancing the durability of the components and ensuring stability. The present disclosure has the effect that the anti-corrosion properties between components of a cooling system are excellent, while the effect of the generation of precipitates that form when electricity flows is small.