The acceleration of the charging process of electric vehicles at this stage is achieved by increasing the voltage in the network, so the on-board electronics must also be adapted to the increased loads. Toray Industries has developed an improved capacitor film that can reduce battery charging time to 20 minutes using 800 volts.
Image source: Toray Industries
Similar calculations, as explains Nikkei Asian Review, the manufacturer of films for capacitors allows you to make the existing experience of operating charging stations with a voltage of 400 volts. When used, the range of an average electric vehicle can be refilled in 40-50 minutes. If the infrastructure can withstand twice the voltage, then the express charging time can be reduced proportionally.
While Tesla still relies on the 400-volt ecosystem, Porsche and the South Korean giant Hyundai Motor, as well as Chinese automakers, are already betting on the 800-volt grid. Toray’s new film for automotive-grade capacitors allows them to withstand 800 volts, which will help promote faster charging of electric vehicles. Along the way, it will be possible to reduce the size of the capacitors and reduce the weight of electric vehicles, which will also increase their range.
Toray now holds 60% of this market segment and expects to increase the productivity of its main facility in Japan by 60% this year. The company predicts that the automotive capacitor film market will triple by 2028. The manufacturer intends to build new factories in order to better meet the growing demand.
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