Low temperature leads to electric cars frequently, how can winter keep battery life?

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

At present, it is important for the use of electric vehicles to use lithium-ion batteries, including lithium iron phosphate, three-dimensional lithium and lithium manganganate, and negative graphite material. The principle of their basic reflection is approximate, all of the "rocking chair" electrochemical energy storage process. Macro, low temperature makes the available capacity of lithium-ion batteries becomes small, and the internal resistance is large; micro, low temperature reduces the potential energy of lithium-ion battery active substance discharge, on the other hand, improve system discharge resistance.

The amount of electricity can be reduced, the mileage will inevitably reduce, and the new part of the internal resistance is added, and some of the available electric energy is directly converted into ohmic waste. Then, the battery is powered down, and the water is returned, driving on the road to fight, worry, worry about the vehicle halfway! How should this situation respond? It is necessary to pay attention to a "fine", the details during the driving process, and the environment when the vehicle is parking. 4 truths of electric car endless shrinkage.

1, too much load, open air conditioning warm air, resulting in excessive power consumption, battery life. 2. Insufficient tire pressure, resulting in new consumption.

When the tire pressure is too low, more power is consumed to overcome the driving resistance, causing the power consumption in the driving process to shorten the endless mileage. 3, do not preheat before driving, speed consumption, reduce battery life. In a few minutes before the start, it is best to move slowly and slowly.

Because the cooling of the cooling solution needs to have a process to ensure that the battery is working properly. There is a data show that a preheating measures can bring the following mileage improvement: the ambient temperature is 20 ¡ã C, no preheating, directly start driving, the renewal mileage is about 60% of the normal temperature mileage; use a preheating method, renewal mileage Tower to 90% of normal temperature mileage. 4, frequent brakes and starting results in new consumption.

Similar to traditional cars, the consumption of electricity under urban congestion road will increase, accelerated and scrapes, etc. In addition, in addition to the above four factors, there is also a parking environment in low temperature environments. Due to the difficulty of parking in the city, many car owners often live downstairs, this usually has no effect, but when the temperature is low, the vehicle is particularly easy to lose money.

At the same time, long-term idle will also cause electric vehicle losses, which in turn affect battery capacity and battery life. It is reported that there is a northern car owner test, open the car to the advanced shopping mall, the car dashboard shows the ambient temperature of 5 ¡ã C, the next day, the expression temperature becomes 19 ¡ã C, 16 hours of battery life and power is not changed. Therefore, relatively warm places can keep electric vehicles' power, but this is also a more realistic difficulty for many people.

Low temperature works is very large about lithium-ion batteries. It is best not to operate low temperature, including discharge and charging. Low temperature discharge can cause damage to the positive and negative electrode material structure, thereby enabling a portion of the available capacity permanent loss.

The low temperature charge is more harmful, and the battery has undergone low-temperature charging, the chance of thermal out-of control increases, and its important influencing factors are the lithium metal deposits accumulated by low temperature charge, more active, more and more prone to occ.

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