Why does the electric vehicle stop charging at around 90%?
1 Answers
When using fast charging, it usually only charges up to about 92%, which is a protection mechanism for the power system. Slow charging can reach 100%. The differences between slow charging and fast charging are as follows: 1. Difference in charging power: Fast charging uses high-power direct current (DC) charging, with a charging power generally exceeding 40kW; slow charging uses low-power alternating current (AC) charging, with a charging power typically at 3kW or 7kW. 2. Difference in charging port: Fast charging uses a DC charging port (5 holes); slow charging uses an AC charging port (7 holes). 3. Difference in working principle: Fast charging converts the grid's AC power into DC power and delivers it directly to the vehicle's fast charging port, where the electricity enters the battery directly for charging. Slow charging inputs the grid's AC power into the vehicle's slow charging port, where the onboard charger converts the AC power into DC power before it is input into the battery to complete the charging process.