General Motors announced a feature standard in its Ultium-based EVs that captures and repurposes waste energy from the battery.
Through the Ultium Platform’s energy recovery system, this waste energy can increase a vehicle’s range, reduce battery energy needed for heating, increase charging speed and even enable sportier driving.
The Ultium Platform can recover and store this waste heat from the Ultium propulsion system. Further, it can also capture and use humidity from both inside and outside the vehicle, including body heat from passengers. The Ultium Platform can then deploy energy stored through the recovery process to heat the cabin more quickly in cold weather than comparable systems found in vehicles with an internal combustion engine.
Ultium’s energy recovery capabilities reduce the need to power heating and other functions from energy stored in the battery, which provides GM’s EVs with as much as 10 per cent more range, potentially allowing more power and range than vehicles with similarly sized batteries without energy recovery capabilities. With its active heating capabilities, Ultium vehicles can also potentially charge more efficiently by preconditioning, or warming up, the batteries before charging.
“Having a ground-up EV architecture gives us the freedom to build in standard features like Ultium’s energy recovery capabilities,” said Doug Parks, GM executive vice-president, global product development, purchasing and supply chain. “This helps us squeeze more efficiency, performance and overall customer benefit out of our EVs.”