Do you understand the difference between fast charging and slow charging of lithium-ion batteries for new energy vehicles
The charging speed of electric vehicle is closely related to the power of charger, battery charging characteristics and temperature. Under the current level of battery technology, even fast charging will take 30 minutes to charge to 80% of the battery capacity, after more than 80%, in order to protect the safety of the battery, the charging current must be smaller, and the time to charge to 100% will be longer. In addition, when the temperature is lower in winter, the battery requires a smaller charging current, and the charging time will become longer.
Fast and slow charging for electric vehicles: Why are there two charging modes?
We understand that a car can have two charging interfaces, in fact, because there are two charging modes: constant voltage and constant current. Generally, constant current and then constant voltage are used first, so that the charging efficiency is relatively high. The reason why the fast charging is caused by the different charging voltage and current, the higher the current, the faster the charging. When it is about to be full, use constant voltage, which can prevent the battery from overcharging and can also achieve the purpose of protecting the battery.
Fast charging and Slow charging for electric vehicles: Why hasn‘t Fast charging replaced slow charging?
The charging current and power of slow charge are relatively small, which is better for battery life, and the charging cost is low when the electricity is low. Fast charging will use a large current and power, will have a great impact on the battery pack, and will also have an impact on life. Fast charging also needs supporting equipment, such as converting AC direct current, so the cost will rise.
Electric vehicle fast charging and slow charging: What should be paid attention to in winter maintenance of electric vehicles?
At present, most vehicles use lithium-ion batteries, at lower temperatures, the performance of lithium-ion batteries will be reduced to varying degrees, as the charging current and discharge current become smaller, the battery capacity is reduced. In the case of high cold, there may even be no charge. Winter driving vehicles will use warm wind, increasing vehicle power consumption, but also reduce vehicle driving range.
When using electric vehicles in winter, it is normal that the charging time becomes longer and the driving range of the vehicle becomes shorter. In use, it should be charged immediately after the vehicle stops running, and the battery temperature can be used to charge faster; When planning a trip, it is necessary to fully consider the decline in vehicle mileage in winter.
The charging speed of electric vehicle is closely related to the power of charger, battery charging characteristics and temperature. Under the current level of battery technology, even fast charging will take 30 minutes to charge to 80% of the battery capacity, after more than 80%, in order to protect the safety of the battery, the charging current must be smaller, and the time to charge to 100% will be longer. In addition, when the temperature is lower in winter, the battery requires a smaller charging current, and the charging time will become longer.
