Hybrid and pure electric vehicles are becoming more and more popular in the market, yet the performance of the power battery in some models is not as good as it could be. Host manufacturers often overlook a problem: many new energy vehicles are currently equipped with only battery cooling systems, while ignoring the heating system. NF Group has been committed to providing clean and efficient drive system solutions for internal combustion engines, hybrid and electric vehicles, and has launched a rich product portfolio in the field of thermal management. Considering the importance of automotive battery pack heating solutions in the post-combustion engine era, NF Group has introduced a new High Voltage Coolant Heater (HVCH) to address these pain points.
Currently, there are two mainstream battery pack heating methods: heat pump and high voltage coolant heater. Basically, OEMs are faced with the choice of choosing one or the other. Take Tesla as an example, the Model S battery pack uses a high energy consumption resistance wire heating, to the Model 3 but the elimination of this form of heating, and instead use the motor and electronic power system waste heat to heat the battery. A battery heating system using 50% water + 50% ethylene glycol as the medium. This option is also being accepted by more and more OEMs, and there are already more new projects in the pre-production preparation stage. Of course, there are also models that choose heat pump heating, BMW, Renault and others are fans of this solution. Perhaps in the future, the heat pump will occupy a certain market share, but in the technology is not mature at the moment, the heat pump heating has its obvious hard wound: heat pump in the ambient temperature is low, the ability to move heat is low, can not quickly heat up the heating. The following chart can clearly understand the advantages and disadvantages of the two technical routes.
|
Type |
Heating effect |
Energy consumption |
Heating speed |
Complexity |
Cost |
|
Heat Pumps |
0 |
- |
- |
+ |
++ |
|
HVCH |
++ |
+ |
0 |
0 |
0 |
To sum up, NF Group believes that at this stage, the first choice for OEMs to solve the pain point of winter battery heating is high voltagecoolant heater. NF Group's HVCH can both keep the cabin warm without engine heat and regulate the temperature of the power battery pack to ensure its efficient operation. In the near future, automotive thermal management systems will gradually be separated from the internal combustion engine, with most hybrid vehicles moving away from internal combustion engine heat until they are completely separated in pure electric vehicles. Therefore, NF Group has developed a high voltage coolant heater solution to meet the thermal management needs of high performance systems that generate heat rapidly in new energy vehicles. NF Group has already received a high-volume order for high voltage coolant heater from a leading European automaker and a major Asian automaker, with production to begin in 2023.
Post time: Feb-28-2023
