With the world-class pure electric exclusive Ultium Aotene platform, Cadillac LYRIQ presents "BEVHEAT efficient integrated thermal management", "double-laminar flow air conditioning", "enhanced heated seats" and other big and small tricks to help users completely eliminate the concerns of winter cars.
Affected by the frequent activities of La Niña and cold air, this past winter is enough to "freeze people", and with us to endure the pain of winter frost, there are electric cars that carry you to and from work every day.
Taking the Beijing area as an example, the minimum outdoor temperature in winter can reach about minus 15 ° C, and the actual endurance of most electric vehicles at this time will be 5-7% discount compared with the official data. With the rapid reduction of battery life visible to the naked eye, many people have to use air conditioning for heating cautiously, otherwise the power consumption will go up to a new level. This creates an embarrassing phenomenon: driving an electric car in winter, people are cold, and cars are colder.
If you want to solve this problem, you need to start from the two aspects of air conditioning heating and battery temperature control. With the world-class pure electric exclusive Ultium Aotene platform, Cadillac LYRIQ presents "BEVHEAT efficient integrated thermal management", "double-laminar flow air conditioning", "enhanced heated seats" and other big and small tricks to help users completely eliminate the concerns of winter cars.
Round 1: Warm up the carriages
Imagine when you sit directly into an electric car that freezes all night in the cold winter night, is it suddenly goosebumps? Therefore, many intelligent electric vehicles are now equipped with remote air conditioning start function, Cadillac LYRIQ is no exception, which can remotely start the air conditioner through the mobile phone APP to create a suitable temperature for the cockpit in advance.
On this basis, Cadillac LYRIQ is also equipped with steering wheel heating and seat heating functions, and many senior electric vehicle users have said that if the first winter season has the above two, life will be much better. In addition, its enhanced heated seat pads are powered up to 50 percent more, from -20°C to 26°C and up to 37°C in just 150 seconds. At the same time, the heated coverage of the seat has also been increased from the regular cushion backrest to the side of the seat, making driving in winter more comfortable.
What if you really have to turn on the air conditioner to warm up the air? Don't be afraid! Cadillac LYRIQ's BEVHEAT efficient integrated thermal management system has two major killer skills in air conditioning heating.
The first is the dual heat source heat pump air conditioner. Cadillac's dual heat source heat pump technology utilizes both the heat from the air source and the waste heat source, which can blow hot air in the cabin faster and more efficiently than indirect heat pumps that heat the waterway, and quickly warm the cockpit. The test shows that in the temperature of -10 °C, it takes only 2 minutes for the air outlet temperature to reach 45 °C.
Secondly, BEVHEAT can also use the thermal energy of the battery to heat the cockpit. In the charging pile connection state, the pre-charging heating can convert the electrical energy of the charging pile into thermal energy and store it in the battery. When the winter cold starts, the system will extract this part of the heat energy to heat the passenger compartment, that is, to achieve rapid heating of the passenger compartment, but also to save the winter vehicle in the cold start, due to the heating of the system preheating and consumption of the huge amount of electricity. During the driving process, the system will also dynamically collect the waste heat generated in each system of the vehicle, convert it into an air-conditioning heat source and send it into the cabin, reducing the overall energy consumption of the vehicle and improving the endurance.
In addition, Cadillac's LYRIQ air conditioning system uses a double-laminar flow design that enables precise stratification of the intake air through a combination of exquisite structures. In the environment of 0-10 °C, the external circulation air flow with low humidity enters the upper layer to avoid fogging of the car window; the inner circulation air flow with higher temperature enters the lower layer, reducing the heating energy consumption. It not only effectively solves the problem of easy fogging of large windows in the temperature difference between the inside and outside of the car in winter, but also effectively saves the power consumption of air conditioners and improves the endurance in winter.
Round 2: Heat up the battery
The direct factor that leads to the serious endurance decay of electric vehicles in winter is that the low temperature leads to a decrease in the ion activity of lithium batteries, and the resistance of the electrolyte will increase. In short, the battery doesn't want to work anymore!
If you want it to continue to contribute, you have to give it some warmth, and come to a little heat to have energy.
In terms of basic materials and structure, Cadillac LYRIQ adopts 811 high-nickel and low-cobalt ternary lithium batteries, through atomic-level in-situ coating and directional doping (oxygen control protection layer) and other technologies, further optimizes the battery cell formula, forms an exclusive positive electrode and battery cell design, realizes thermal stability by about 10%, and can still maintain the stability and consistency of the internal temperature in response to extreme external temperature conditions in winter, with high safety characteristics.
The battery pack is equipped with an integrated liquid cooling system, and each module is equipped with an integrated independent liquid cold plate with a patented design, which is about 10% higher than the centralized liquid cold plate design of the battery pack in the industry. The battery pack temperature can be quickly raised to the appropriate operating range with as little electrical energy as possible.
Next, it is cadillac LYRIQ's BEVHEAT efficient integrated thermal management system to appear.
BEVHEAT can help with the thermal management of the vehicle's battery in two scenarios. First of all, under a single parking scenario, the battery cell and module minimize external heat exchange, improve the thermal insulation effect, and avoid heat loss through heat insulation technology. The test shows that after 12 hours of temperature at -7 °C, the battery temperature remains at the level of 5 °C-10 °C.
Secondly, when the user makes an appointment for a fast charging pile, the vehicle system will preprocess the battery temperature according to the distance, driving habits, temperature, current power and other information, and the car can immediately carry out maximum power fast charging when it arrives at the station, saving charging time.
Finally, Cadillac LYRIQ also uses industry-leading self-developed patented algorithms in the power and battery life estimation method, which can display more accurate remaining battery and mileage for users. In the low temperature conditions of winter, it can help users better plan the itinerary, but also let the vehicle have a stronger vehicle limit endurance.
The cutting-edge design and advanced architecture of the Ultium Aotene platform make Cadillac LYRIQ a leading position in efficient and rational power consumption, setting a model for luxury electric vehicles at the technical level.