- Ultimate Energy Recovery capture the heat generated when the electric vehicle is moving — from the engine or battery or even from the people in the vehicle — and use it as a heat source elsewhere.
- General Motors developed the system to improve efficiency — and it’s increased by as much as 10%, according to the company.
- GM claims the setup even contributes to GMC Hummer EVhair-raising acceleration performance.
Harnessing every last bit of power from an electric vehicle’s battery pack is an important engineering task. General Motors’ latest trick to getting the most out of a battery-electric vehicle is thanks to a new type of heat pump that captures excess thermal energy — from the battery, the powertrain or even from the batteries. occupants — and use it to warm the cabin and extend the vehicle’s driving range.
GM calls this new technology Ultium energy recovery, and as the name suggests, it’s applied to the company’s line of Ultium battery-powered electric vehicles. This listing currently includes the GMC Hummer EV, with Chevrolet Silverado EV and Cadillac Lyriq coming soon. Other Ultium vehicles are also in the pipeline, including the Cadillac Celestiq sedan, and GM notes that an Ultium energy recovery system will become standard on all current and future Ultium-based EVs. .
GMC
The heat sources that the Ultium energy recovery system takes out include the battery itself, various power electronics, several propulsion components, and — most interestingly — the temperature of the occupants of the cabin, as well as humidity. inside and outside the car. The Ultium energy recovery system then uses this captured heat to warm the cabin. GM estimates this heating solution can extend the range of EVs by up to 10%.
In addition, GM claims the Ultium energy recovery system can warm the cabin of an electric vehicle in less time than “comparable systems” of an internal combustion engine vehicle. The setup also offers potential performance improvements. For example, Ultium energy recovery helps to cool the Hummer EV’s propulsion system when the vehicle is set to Watts to Freedom mode. As a result, the large pickup’s powertrain can be pushed harder without overheating, so the Hummer EV’s 60 mph time is about three seconds.
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