The difference between fast charging and slow charging of new energy vehicles

Different charging speeds

There is a clear difference in charging speed between fast charging and slow charging of new energy vehicles. Fast charging can provide enough power for the vehicle in a short time, usually within 30 minutes to 1 hour to fully charge a new energy vehicle6. In contrast, the charging speed of slow charging is relatively slow, and it usually takes 8 to 10 hours to fully charge the battery.

Different charging methods

Fast charging uses high-power DC charging, that is, high-voltage DC is directly transmitted to the power battery for charging through a DC charging pile. The advantage of this method is fast speed, but the disadvantage is that it has high requirements for the battery, and long-term use may have an adverse effect on the battery life. Slow charging converts AC power into DC power and then charges it into the power battery through an on-board charger. The advantage of this method is that it will not cause damage to the battery, but the charging speed is slow.

Different charging interfaces

Another difference between fast charging and slow charging is the difference in the charging pile interface. Fast charging is usually high-power DC charging, and the corresponding charging interface usually has 9 round holes. Slow charging is AC charging, and the corresponding charging interface usually has 7 round holes.

Different usage scenarios

Fast charging is suitable for long-distance travel or urgent charging due to its fast charging speed. Slow charging is suitable for long-term charging at fixed locations such as home or workplace, which can provide convenience for daily commuting and travel.

Impact on battery life

Although fast charging is convenient and fast, it may cause the battery temperature to rise due to the large charging current, thereby accelerating battery aging and shortening the battery life. In contrast, slow charging puts less pressure on the battery and does not produce excessively high temperatures, so it causes less damage to the battery.

There are certain differences between fast charging and slow charging of new energy vehicles in terms of charging speed, charging method, charging interface, usage scenarios, and impact on battery life. When choosing a charging method, consumers should decide whether to choose fast charging or slow charging based on their own needs and usage scenarios.