Electric cars have fast charging appliances
< br >
The installation requirements and cost of lithium battery charging equipment are high, and the current and voltage are high, which has a greater impact on the battery in a short period of time, and long-term fast charging will affect the service life of the lithium battery.
Fast charging will input large current to the lithium battery in an instant, and frequent use of fast charging mode will reduce the reduction capacity of the battery and reduce the number of charge and discharge cycles of the battery.
When fast charging, the quality of the lithium battery is very high, the life of the battery will be greatly lost, so the safety factor will be significantly reduced, so do as little as possible when you do not need to charge;
The working principle of lithium battery fast charging is: first, increase the voltage; The second is to increase the current. Like this, fast charging also uses this principle, so the high current memory board will have an overspeed response. Due to internal resistance and values that exceed the limit temperature, this reaction generates a lot of heat, which damages or prematurely ages the battery.
The difference between fast charge and slow charge of lithium battery
Fast charging and slow charging are relative concepts, under normal circumstances, fast charging is high-power DC charging, half an hour can fill 80% of the battery capacity, slow charging refers to AC charging, the charging process takes 6-8 hours. Fast charging is due to different charging voltages and currents, and the higher the current, the faster the charging. When the battery is nearly full, use constant voltage to prevent overcharging of the lithium battery and protect the battery.
The charging current and power of slow charging of lithium batteries for electric vehicles are relatively small, which is conducive to battery life, low power consumption at peak, and low charging cost. Fast charging will use high currents and high power, which will have a big impact on the battery pack and life. Fast charging also requires supporting equipment, such as AC and DC power conversion, so the cost will rise.
It should be noted that if fast charging is always used, the lithium battery life of electric vehicles will be affected. The cycle life of lithium batteries is determined, in the case of slow charging, the cycle life of the battery can reach more than 3000 times, if the battery is quickly charged, the cycle life will be shortened to about 1000 times, or even lower.
This kind of fast charger is available, if so charged, your battery will soon be useless, because the battery charging current of the electric vehicle is generally between 10% and 20% of the capacity, if you use more than 20% of the current to charge, a week later your battery capacity will be significantly reduced, the mileage is significantly shortened, if you use a larger current, then the battery capacity will be significantly reduced. Your battery will be damaged faster.
Electric vehicle, that is, electric drive car, also known as electric drive. Electric vehicles are divided into AC electric vehicles and DC electric vehicles. Generally, electric vehicles use batteries as energy sources, and convert electrical energy into mechanical energy movement through controllers, motors and other components to control the size of the current and change the speed of the vehicle.
Yes, but it is recommended not to use the damaged battery
The larger the charger amperage of the battery car, the faster it will charge. Charging fast will cause damage to the battery, and the battery will not be durable.
< br >
Commonly used DC charging, fast charging power is about 6.25KW; It can be charged in a very short time. The charging process is a two-way chemical process that causes lead sulfate to interact with water to generate lead oxide and sulfuric acid, while hydroelectrolysis occurs to generate hydrogen and oxygen. Rapid charging will cause the battery to lose water and dry out, while generating a lot of heat.
< br >
Generate a lot of hydrogen and oxygen, the internal pressure becomes high, easy to make the battery's plastic shell soft. Often fast charging, or the use of unqualified, aging chargers, easy to make the battery drum, deformation, affect the performance of the battery, and even scrap
Electric car charger has fast charge. However, it is best not to use it. Because the charging voltage and current of the fast charge are very high, if it is used for a long time, the battery will be damaged, resulting in a greatly reduced battery life. So the electric car is best not to use fast charging.