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Denso Adds EV Charger to Home Energy System
Denso Corp. is expanding its experimental home energy management system (HEMS) with a station that can recharge an electric vehicle or transfer power from the EV to the home.
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Denso Corp. is expanding its experimental home energy management system (HEMS) with a station that can recharge an electric vehicle or transfer power from the EV to the home.
The HEMS includes an 8.4-kWhr battery that stores energy from the grid or the home's solar panels. The battery can then be used to power the household during peak demand periods when electricity from the grid is costliest.
Adding a charging station to the system enables HEMS to recharge an EV without tapping power from the grid. Denso says the system can deliver enough electricity in 15 minutes to power an EV for 12 miles.
Denso's system determines optimal charging and discharging cycles for an EV and the household by estimating daily power requirements for both. The system also is able to store any excess energy from solar panels rather than sell it to the grid.
Denso is developing the HEMS/charger system with Toyota Motor Corp., its 25% owner. The supplier plans to demonstrate the technology next year using EVs from Toyota and Mitsubishi Motor Corp.
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