Cobasys (Orion, MI) is a joint venture of ChevronTexaco Technology Ventures and Energy Conversion Devices (ECD) that arose out of ECD's involvement with GM's EV1 electric car program. Soon, another GM project will put it on the map with OEMs everywhere.
Though Cobasys officials refuse to confirm it, GM sources indicate the company's NiMHax HEV (Nickel Metal Hydride, Hybrid Electric Vehicle) battery pack will be used in the strong hybrid version of GM's 2007 full-size SUVs. Liquid-cooled NiMHax HEV battery packs range in capacity from 144 volts/30 kW to 672 volts/280 kW, and all are based on combinations of three basic stand-alone battery pack modules–144 volts/30 kW, 288 volts/ 60 kW, or 336 volts/ 70 kW. The packs are fully sealed, have integral thermal management and state-of-charge systems, CAN communication busses, and a built-in high-voltage interlock that requires secure electrical connections before the unit can operate. Cobasys says the packs can be distributed around the vehicle, or repackaged without altering the basic components. This speeds design validation, and offers plug-and-play interchangeability.