Fluorosilicone oil leads the innovation of new energy vehicle battery thermal management technology

1. Core technology breakthrough: high thermal conductivity and flame retardant performance reshape the safety boundary of batteries
The thermal management system of the new energy vehicle battery directly determines its performance and safety. Traditional materials such as epoxy resin thermal conductivity is only 0.15-0.28W/(m · K), and flame retardant performance is limited, it is difficult to meet the heat dissipation requirements of high-density battery packs. With its unique molecular structure, the thermal conductivity of fluorosilicone oil can reach 0.21W/(m · K), and it has excellent chemical stability and flame retardancy, making it the first choice for the next generation of battery thermal management materials.
Experimental data show that the maximum temperature of the battery module equipped with fluorine silicone oil based thermal conductive silicone plate (CSGP) can be controlled within 50℃ when charging and discharging at 4C rate, which reduces the risk of overheating by 38.4% compared with the traditional scheme.
Its core advantages are:
Wide temperature range stability: the operating temperature range covers -80 ℃ to 250℃, suitable for extreme environment;
Flame retardant and non-toxic: no toxic gas is produced during combustion, and the emission of smoke is reduced by 70% compared with that of polyurethane materials;
Long life characteristics: Chemical inertness extends its service life to more than 10 years in the battery pack.

2. Submerged liquid cooling technology: the leap from laboratory to industrialization
The application of fluorosilicone oil in submerged liquid cooling system has completely changed the limitations of traditional air cooling and cooling plate heat dissipation. By fully immersing the battery module in a low-viscosity fluosilicone oil coolant, the following breakthroughs can be achieved:
Global uniform temperature control: the heat transfer efficiency of the coolant is increased by 8%, and the temperature difference of the battery core is controlled within 2℃, which is reduced by 80% compared with the traditional solution;
Safety performance upgrade: 600℃ flame gun test shows that the fluorine silicone oil coolant can not be ignited, combined with thermal interface materials and instant protection technology, can block the cell thermal runaway spread;
Energy efficiency and cost optimization: The energy conversion efficiency of the system reaches 95%, the cycle life is increased by 33%, and the material cost is only one-tenth of that of traditional fluorinated liquids.
Industry data predict that the domestic submerged liquid cooled energy storage market will reach 6.5 billion yuan in 2025, and fluorosilicone oil-based solutions occupy a dominant position.

3. Policy and market two-wheel drive: fluorine silicone oil opens a hundred billion blue ocean
The explosive growth of the global new energy automobile industry has injected strong impetus into the fluorosilicone oil market. The "Action Plan for the high-quality Development of New energy storage Manufacturing Industry" jointly issued by the Ministry of Industry and Information Technology and other eight departments clearly requires that the mandatory national standards for the safety of liquid cooled energy storage systems be formulated before 2026, and the "full immersion fire prevention" is listed as the technical encouragement direction. This policy orientation is highly consistent with the technical characteristics of fluorosilicone oil, and promotes its large-scale application in power batteries, energy storage power stations and other fields.
At the market level, the demand for fluorosilicone oil shows a diversified trend:
New energy vehicles: Each electric vehicle battery pack needs to consume 0.5-1 kg of fluorosilicone oil, and the global demand is expected to exceed 50,000 tons in 2025;
Energy storage field: the permeability of large storage container liquid cooling system exceeds 45%, driving the annual demand for fluorosilicone oil to increase by 20%;
Data center: The single-phase submerged liquid cooling solution can reduce the PUE value to less than 1.1, which is 0.3-0.5 lower than the traditional air cooling, and becomes a requirement for high computing power scenarios.

4. Challenges and future: Technology iteration and industry advance in tandem
Although the fluorosilicone oil market has broad prospects, the following bottlenecks still need to be broken through:
Cost control: The current production cost of fluorosilicone oil is 3-5 times higher than that of ordinary silicone oil, which needs to be reduced by process optimization and large-scale production;
Lack of standards: The industry lacks a unified test standard for the performance of fluorosilicone oil, and it is necessary to accelerate the establishment of a certification system for key indicators such as thermal conductivity and flame retardant grade;
Environmental pressure: The EU's PFAS ban requires a total ban on fluorine-containing coolants by 2028, and promotes the research and development of low-toxicity, degradable fluorosilicone oil.
In the future, fluorosilicone oil technology will develop in the direction of "lower viscosity, higher thermal conductivity and more environmental protection". For example, ultra-low viscosity (3.2cP) fluorosilicone oil has been mass-produced, and its fluidity is close to that of water, which can further improve heat dissipation efficiency. At the same time, the industry's leading enterprises are collaborating with universities to carry out research on fluorine silicone oil recycling technology, and the goal is to increase the recycling rate of materials to more than 90%.

Conclusion
Fluorosilicone oil, with its comprehensive advantages in thermal conductivity, flame retardant, chemical stability and other aspects, is reshaping the technical pattern of thermal management of new energy vehicle batteries. With the increase of policy support and the expansion of market demand, this material is expected to become a 100-billion-level industry in the next five years, providing key support for the global energy transition.