Two key elements in an HVAC system

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Two key elements in an HVAC system 2023-03-07

As the number of hybrid electric vehicles (HEV) and electric vehicles (EV) continues to grow globally, automotive developers are innovating to stay ahead. Differentiating HEV/EV powertrain systems has historically been an area of focus, and today HEV/EV thermal management or heating, ventilation and air conditioning (HVAC) system differentiation is also a key area for market leaders. areas that cannot be ignored. The thermal management system consumes the second largest amount of power (after the powertrain) in HEVs/EVs and directly impacts range.

Internal combustion engines (ICEs) have been powering automobiles and their HVAC systems for decades. In HEVs/EVs, due to size constraints or the absence of an internal combustion engine, two additional components need to be introduced, which play a key role in the HVAC system:

A brushless DC (BLDC) motor is a DC motor that rotates the air conditioner compressor instead of the engine.

A positive temperature coefficient (PTC) heater or heat pump heats the coolant instead of the engine. In the case of a heat pump, battery thermal management transfers heat from the battery to the interior of the vehicle. An integrated heat pump reduces weight, increases battery life and reduces costs.

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