Thermal management system for many consumers are a knowledge blind spot or do not care too much about the point, some people who have heard of thermal management, but also mostly only know that thermal management in fuel vehicles, in fact, electric vehicles also have a thermal management system, and the thermal management system for electric vehicles electrical work efficiency, energy consumption endurance and other aspects have a more important role, can directly affect the driver and occupants of the car experience.
For consumers who use electric vehicles on a daily basis, thermal management systems mainly play an important role in the following scenarios.
▲Driving in the winter is a comfortable picture
In winter, the driver and occupants first heat the seat, and then put the temperature of the air conditioner up, and when the family gets on the car, the car is comfortable. The heat management system will directly affect the speed of the warm air, if the heat management system is not good, the heating and air conditioning are not powerful, the people in the car will be cold, and the children may catch a cold. There are more troublesome things, after a period of time the air conditioner is not easy to heat up, if the energy is not well controlled, you will find that there is not much road, the endurance data displayed by the odometer will whizz directly down, the original winter battery temperature is relatively low, the energy release is relatively blocked, this is more fatal.
In the summer, the role of thermal management may be relatively direct, mainly to spend some time to reduce the temperature of the carriage, but in the process of rapid cooling, the energy consumed by the thermal management system is also more critical.
In fact, whether the electric vehicle thermal management system is good or bad will affect the efficiency of vehicle electrical efficiency, waste heat recovery, energy consumption and other aspects, and these effects will be directly fed back to the experience of drivers and passengers, and the importance of a good thermal management system for an electric vehicle is self-evident.
I have a lot of communication with GM engineers, based on the Ultium Aotene electric vehicle platform born of the first pure electric SUV work - LYRIQ, engineers consider the pain points of consumer cars, for this car equipped with advanced BEVHEAT efficient thermal management system, I come to focus on the information I learned.
●It has efficient heating capacity
Customers in northern China have been in a low temperature environment for nearly half a year throughout the year. We have seen some people ridicule "electric dad" before, one is to complain about the short mileage, and the other is to complain about buying an electric car, driving in winter needs to cover the quilt, on the one hand, because the heat is slow, on the other hand, because it will accelerate the process of decay. For a good electric vehicle, it is necessary to solve the problem of heating performance and power consumption of electric vehicles (the biggest pain point of customers).
LYRIQ's BEVHEAT efficient thermal management system uses a direct heat pump, which is more effective than the indirect heat pump we usually see in the heating waterway, because the direct heat pump can blow hot air in the cabin faster, quickly warm the passenger cockpit, and bring the car to the right temperature. According to the set test verification situation, the LYRIQ is placed in the cryogenic chamber, and in the temperature of -10 °C, it takes only 2 minutes for the air outlet temperature to reach 45 °C.
●It can make full use of the energy of the charging pile
When connecting the charging pile, LYRIQ has a thoughtful heat storage function in addition to charging. This heat storage function allows the vehicle to have a better state when it is about to leave and drive, bringing a more comfortable and worry-free car experience.
Specifically, in the case of the charging pile is energized, the whole vehicle can convert the external input electrical energy into thermal energy stored in the battery, maintain the temperature of the battery in the best state, waiting for driving; in the driving, this part of the heat energy will also be used to heat the passenger cockpit, compared to the pure electric model without this function, the temperature increase in the car will be faster, and it can also save the huge amount of electricity consumed by the winter vehicle due to heating various systems during cold start. In addition, LYRIQ will also dynamically collect the waste heat generated in each system of the vehicle during the process of travel, and convert this heat energy into a heat source of the air conditioner and send it into the cabin, which can save more power, winter battery life can also be significantly improved, and the efficiency of heat use has been fully improved.
●Intelligent self-learning ability
Most people who have driven electric vehicles will encounter situations that need to be replenished on the way, and then they need to find charging piles to charge. At this point, if you are driving LYRIQ, you can make a worry-free charging pile search appointment, and after the appointment is completed, the intelligent learning function of the BEVHEAT efficient thermal management system equipped by LYRIQ plays an important role.
Specifically, after successfully booking the charging pile, the vehicle system can adjust the battery temperature according to the driver's habits, the distance from the charging pile, the weather temperature, the current vehicle status and other information, so that when the vehicle arrives at the charging station, the battery temperature can be controlled within the optimal range to ensure maximum charging efficiency and save charging time. This design, in fact, in the low temperature and high temperature are applicable, the cell temperature has a great impact on the charging performance, if the temperature is low, the fast charging power will decrease, if the temperature is too high, it may also damage the battery, shorten the battery life and so on. Therefore, a set of intelligent thermal management system is very practical for users, intelligent control of the battery temperature, is an important condition to ensure fast charging, can make the car experience more comfortable and smooth.
●Excellent battery insulation technology
Many of the current new energy vehicles can not withstand the test of the winter in the north, and usually there will be a decrease in endurance, but if the thermal insulation performance of the battery is good, it can better maintain the stability of the battery temperature, thereby ensuring the endurance in the low temperature of winter. The battery insulation technology brought by LYRIQ's BEVHEAT efficient thermal management system minimizes the heat exchange between the battery cell and the module, and the thermal insulation effect is good to ensure that the heat loss is minimized. In fact, in other words, the technology is equivalent to separating the battery cell from the outside world, so as to ensure the maximum utilization rate of system heat. Low temperature test experiments have shown that LYRIQ is placed at a temperature of -7 °C for 12 hours, and the battery cell temperature can still be maintained at the level of 5-10 °C, which fully guarantees the normal performance of the battery, which is undoubtedly a reassuring pill for electric vehicle consumers.
Looking at these functions alone, we can already feel the superiority of this thermal management system, but what is more interesting is that the BEVHEAT efficient thermal management system equipped with LYRIQ combines a number of functions and technical advantages, not only with efficient heating capacity, heat storage function and intelligent self-learning ability, but also using excellent battery insulation technology, so that LYRIQ's driving comfort is on a higher level. In fact, the subtleties see the real chapter, a thermal management system on LYRIQ is carefully considered and polished according to the actual situation of consumers, which is enough to see the product strength of LYRIQ and is trustworthy.
Summary: Electric vehicles have developed since their birth, although the mileage has been continuously improving, there are still many pain points, and winter cars can be said to be a major pain point, so at low temperatures, the role of the thermal management system is particularly important. At the same time, this is also a very interesting thing, on the one hand, this is a topic that various car companies have spent a lot of efforts to research and develop, on the other hand, this is indeed closely related to the pure electric travel experience of consumers. According to the information I know now, the BEVHEAT high-efficiency thermal management system equipped by Cadillac LYRIQ can be described as "advanced" compared to other pure electric vehicles, in a nutshell because it can intelligently meet the direct needs of consumers for all aspects of the vehicle system.