ULVAC has developed an EV charging system that combines a fast charger for electric vehicles (EV) with solar cell power generation equipment. Orders have been received from Chigasaki City, Kanagawa Prefecture, and will be used in the municipal parking lot in Chigasaki City before March 2010. The EV charging system is priced at tens of millions of yen. The sales target for the first year is 1 billion yen. In addition to Japan, Afco said it will actively undertake overseas orders.
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The EV charging system consisting of a solar cell with a maximum power generation of 20 kW and a 50 kW fast charger will be provided to Chigasaki City. When the solar cell is underpowered, the power system will supplement the power. The system also has the function of displaying power generation and charging status on a display in the Chigasaki City Government.
The core of the EV charging system, the fast charger and power conditioner, was developed by Aifa and its subsidiary Reliance Japan. The fast charger meets the standards of the Tokyo Electric Power Company and can charge 80% of the EV battery capacity in about 25 minutes. Reliance Japan has developed a power supply for sputtering equipment and switched it to a fast charger. The power converter's power conversion efficiency can reach 98%.
Before providing the system to Chigasaki, AIFCO has deployed an EV charging system for demonstration at its headquarters in Chigasaki City. The system consists of a solar cell with a maximum power generation of 8.4 kW and a fast charger with a power of 25 kW. The solar cell uses a series-structured thin-film silicon solar cell produced by the factory's prototype production line. The stable conversion efficiency is about 8%. Afco will use the demonstration system to continue research and development to improve the efficiency and ease of operation of the EV charging system.
Set up the EV charging system at the Aifake factory. The mayor of Chigasaki, who is standing in the middle, is pressing the button of the quick charger. (Click to enlarge) 
It will be supplied to the EV charging system used in Chigasaki City. (Click to enlarge) 
EV charging system of Aifa Factory. A thin film silicon type solar cell is used. (Click to enlarge)
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