New development direction of green silicon carbide in the field of automotive applications
At present, a large number of power systems of hybrid electric vehicles and pure electric vehicles on the market use silicon power semiconductor devices. With the increasing demand for new energy vehicles, improving system efficiency and increasing power density has become an urgent need to optimize system design
However, the performance of traditional silicon power semiconductor devices has reached the limit in many aspects, and green silicon carbide has officially become the material of choice to break through the bottleneck of silicon performance. Ideal for performance. Green silicon carbide devices have higher current density. Under the same power level, the use of green silicon carbide devices can reduce the volume of the electric drive system by 3-5 times, making the system higher in power density and more compact in structure. Under the same battery life, the battery weight and volume required for the drive system solution based on green silicon carbide are smaller. Under the same battery capacity, the drive system using green silicon carbide can make the battery life of the electric vehicle longer. The larger the battery capacity, the more significant the cost savings from using green silicon carbide. Green silicon carbide is made of petroleum coke and high-quality silica as the main raw materials, adding salt as an additive, and smelting at high temperature in a resistance furnace. The smelted crystal has high purity and high hardness, and its hardness is between corundum and diamond. Mechanical strength higher than corundum.
Its silicon content is higher than that of black silicon carbide, and it has better thermal conductivity and semiconductor properties. Our green silicon carbide has stable quality, good crystallization, high surface cleanliness, good thermal conductivity,
