Battery Cooling Fluid Composition With Flame Retardant Protection

The patent changes the chemical composition parameters of the cooling fluid by incorporating fluorinated compounds with specific molecular structures (CF3 groups) and maintaining precise concentration ratios (5-20% fluorinated compound, 80-95% hydrocarbon). This parameter optimization enables the fluid to simultaneously achieve superior heat transfer coefficients and fire suppression capabilities, resolving the contradiction between cooling effectiveness and fire safety

The patent creates a composite cooling fluid by combining hydrocarbon base fluids (isoparaffins, naphthenes, or aromatics) with fluorinated compounds (perfluorinated or partially fluorinated). This composite formulation synergistically integrates the high heat capacity and thermal conductivity of hydrocarbons with the fire-resistant properties of fluorinated compounds, achieving both effective cooling and fire protection simultaneously

The patent employs fluorinated compounds that function as fire inhibitors through chemical mechanisms (radical scavenging, flame interference) rather than relying on persistent physical barriers. These compounds work effectively in smaller quantities and can be part of a replaceable cooling fluid system, reducing the need for large amounts of persistent heavy halogenated compounds while maintaining fire protection

The patent optimizes the fluorine-to-carbon ratio and molecular structure parameters of the fluorinated compounds used. By selecting specific fluorinated compounds with appropriate chain lengths and substitution patterns, the patent achieves effective fire resistance with lower concentrations compared to traditional heavy halogenated compounds, thereby reducing environmental persistence and toxicity while maintaining ignition resistance

The patent optimizes the density parameter by selecting fluorinated compounds with lower molecular weights and appropriate carbon chain lengths. The formulation achieves fire resistance through optimized chemical composition rather than relying on high-density heavy halogenated compounds, thereby maintaining lower overall fluid density and reducing the mass of the cooling system

The patent applies fire resistance locally through the chemical action of fluorinated compounds at the molecular level during combustion events. Rather than requiring the entire cooling fluid to be dense halogenated compound, the patent uses a small concentration (5-20%) of fluorinated compounds that activate specifically when fire occurs, providing fire protection without requiring the bulk fluid to have high density