What is the difference between fast charging and slow charging for electric vehicles?
1 Answers
The differences between fast charging and slow charging for electric vehicles are as follows: 1. Charging time: Fast charging can reach 80% in half an hour, while slow charging takes 6~8 hours to fully charge. 2. Impact on the battery: Fast charging may cause some damage to the battery, whereas slow charging is better for the battery's lifespan. 3. Charging mode: Fast charging directly connects to the vehicle's battery without passing through the onboard charger, while slow charging requires conversion via the charger. 4. Pros and cons: ① Advantages: Fast charging uses DC charging, which imposes higher requirements on the voltage resistance and protection of the power battery pack. Slow charging at a lower rate not only reduces heat and battery pressure but also benefits the long-term health of the battery. ② Disadvantages: The installation requirements and costs for fast charging equipment are very high. The higher current and voltage of fast charging can easily cause the active material of the battery to fall off and the battery to overheat, affecting its lifespan. Slow charging takes a long time and is only suitable for vehicles that operate during the day and rest at night.