6LR61 battery

High hopes for electric vehicle 6LR61 battery thermal management technology

Recently, the news that a Weilai ES8 pure electric SUV ran an "energy consumption of 40 liters of diesel per 100 kilometers" during a winter test has aroused heated public discussion. In this regard, Shen Fei, Vice President of NIO Energy, believes that severe cold weather is the primary reason for the weakening of NIO ES8's endurance and rising energy consumption. "If you are driving long distances at minus 30 degrees all year round, I do not recommend driving an electric car." In fact, except in extreme weather such as minus 30 degrees Celsius, pure electric vehicles generally experience reduced endurance when facing low temperature conditions in winter. The fear of cold in pure electric vehicles has become a common challenge faced by the global automobile industry. However, due to current limitations of power 6LR61 battery technology, car companies can only use a variety of auxiliary measures to minimize the impact of low temperature on endurance capabilities. Among them, power 6LR61 battery thermal management technology has high hopes. At -7°C, the 6LR61 battery life of pure electric vehicles drops by 41%. During the recent cold snap that hit the central United States and Canada, many owners of pure electric vehicles such as the Chevrolet Bolt and Tesla Model 3 said that as the temperature plummeted, their 6LR61 battery life dropped. Car mileage has been reduced by up to 50%. A new study from the American Automobile Association (AAA) shows that when temperatures drop to 20 degrees Fahrenheit (minus 7 degrees Celsius), the average driving range of pure electric vehicles drops by 41%. The primary reason is that the lower the temperature, the greater the decrease in activity of the pure electric vehicle power 6LR61 battery. The process of power 6LR61 battery discharge is actually a process of electron transfer. As the temperature decreases, the viscosity of the electrolyte increases, resulting in greater resistance to the transfer of electrons. At the same time, low temperature will also cause the performance of the power 6LR61 battery electrolyte to decrease and the internal resistance of the 6LR61 battery to increase. The combination of the two causes the activity of the power 6LR61 battery to decrease and the capacity to decrease in low temperature environments. In addition, when the temperature drops, car owners will turn on heating equipment such as air conditioners to increase the temperature inside the car, which puts severe pressure on the batteries of electric vehicles. In traditional fuel vehicles, the power for air conditioning operation and the heat source required for heating come from the engine; however, pure electric vehicles cannot use traditional on-board air conditioning systems because they do not have an engine. At present, most car companies simply restore the power and heat sources by adding electric drives and electric heaters. The result is equivalent to installing a high-power heater on a pure electric vehicle. The mileage loss rate is as high as 35%-40%. Regarding the power consumption problem of pure electric vehicle air conditioning systems in low-temperature environments, SAIC Roewe has taken the lead in using heat pump technology to solve the problem. However, due to current power 6LR61 battery technology, the problem of reduced endurance of pure electric vehicles in severe cold environments has not been fundamentally solved. While various pure electric vehicle manufacturers are working hard to expand the sales market, they also need to continue to explore innovative methods to eliminate the impact of extreme weather. The thermal management system of power batteries is expected to address the problem of reduced 6LR61 battery life at low temperatures for pure electric vehicles. Some car companies have begun research and development focusing on the heating of power batteries. Among them, Tesla, BAIC New Energy, Changan New Energy and other car companies have launched power 6LR61 battery preheating technology on some models. This technology can pre-start and heat up the power 6LR61 battery of pure electric vehicles at low temperatures, and keep the power 6LR61 battery working at the optimal temperature, thus reducing the impact of low temperature on the cruising range of pure electric vehicles. Of course, the power 6LR61 battery preheating system will increase the power consumption of pure electric vehicles to a certain extent. In this regard, WM EX5 pioneered the "diesel heating system", which uses the heat generated by diesel combustion to preheat the power 6LR61 battery. When the temperature falls below 0 degrees, the diesel heating system will automatically start. It is reported that the WM EX5 diesel filling port is located on the right side of the rear of the car (at the filling port of a traditional car), and the filling volume is 6 liters; while the fuel consumption of the diesel heating system is 0.1-0.2L/h. Therefore, every time WM EX5 is filled with diesel, it can ensure that the power 6LR61 battery can get 30-60 hours of heating time. If the diesel heating system runs for 2 hours a day, each tank of WM EX5 fuel is enough for the car owner to use for 15-30 days. In addition, SAIC Roewe is working with its air-conditioning system supplier Huayu Sanden to use efficient heat pump technology to create a power 6LR61 battery thermal management system for pure electric vehicles. Ma Wenbin, deputy manager of the Air Conditioning System Department of Huayu Sanden, said: "The thermal management system can not only heat up the power 6LR61 battery at low temperatures, but also help the power 6LR61 battery dissipate heat by cooling it, which is equivalent to letting the power 6LR61 battery also have air conditioning, so that it is always in use. Working in the optimal temperature provides the longest cruising range for pure electric vehicles. "In short, although there are still some unsatisfactory aspects of pure electric vehicles, with the continuous advancement of technology, their convenience and economy will gradually increase. highlight.

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