When taking a taxi in winter, I often listen to the driver's nagging, how can the battery that has just been replaced, lose power so quickly? After the temperature drops in winter, the vehicle's cruising range is significantly reduced, and the power consumption is increased. So, why do trams drain electricity faster in winter?
Why do trams consume electricity in winter?
01Reduced battery activity
The activity of the positive and negative electrode materials of the lithium battery in the low temperature environment of the battery of the electric vehicle, as well as the discharge voltage of the battery, lead to a decrease in the usable capacity of the battery and a decrease in the mileage, this reduction in capacity is temporary, the temperature rises, and the discharge conditions will return to normal after the improvement of the discharge conditions.
02Use of heating systems such as air conditioners
The air conditioning work of electric vehicles generally requires the participation of heating wires, which consumes the power of the power battery, which is less efficient than the engine waste heat utilization of traditional cars, so in order to maintain the temperature in the car, more electricity needs to be consumed.
03Electrolyte lithium separation
In the case of a particularly cold battery pack, lithium dendrites will be generated between lithium batteries, which will grow hairy at long-term low temperatures, and will puncture the insulating parts inside the battery to a certain extent, and the positive and negative electrodes will be short-circuited, and the battery will thermally runaway.
04Charging slows down
At low temperatures, the battery is charged slower because the chemical reactions inside the battery are slower. This makes it take longer for the vehicle to fully charge, increasing the total charge power.
How to drive a tram in winter to save more energy?
01Rational use of the interior heating system
When using an electric vehicle in winter, you should minimize the over-reliance on heating systems such as air conditioners, and when you need to turn on the air conditioner heater, it is recommended that you keep it at a constant temperature of 23°C, which can effectively save electricity for air conditioning. At the same time, it is recommended that you turn on the inner circulation, because in the case of the external circulation, the cold air blows into the car, which will consume more power.
02 Steady speed, low speed driving
In the process of daily car use, you will encounter a variety of vehicle conditions, and it is inevitable that there will be sharp acceleration, sharp deceleration, sharp turning, sudden braking and other operations, which will aggravate the power consumption of your car.
Try to drive at a constant speed to avoid rapid power consumption caused by high-speed travel. When starting and stopping, you should also start slowly and brake slowly. Make full use of the energy recovery system of the electric car to improve the battery range.
03Arrange the charging time reasonably
Try to choose to charge during periods of warmer temperatures, such as during the day or in an indoor garage. This makes full use of the charging efficiency of the battery and reduces heat loss during charging.
04Raise the tire pressure appropriately
If the tire pressure is too low, the deformation of the carcass will increase, and the contact area between the tread and the ground will increase, which will lead to excessive friction between the tire and the ground and aggravate the power consumption.
Every holiday, people who drive electric cars are embarrassed, they dare not turn on the air conditioner, do not speed and slow, and queue up in the service area to charge. In order to avoid the above problems, it is still necessary to plan the route reasonably, and use good electricity on the cutting edge.
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