New energy electric vehicles are becoming increasingly common. Have you ever encountered such a 'charging mystery'? Although the owner of the car in the adjacent parking space is using the same pile, same power, and even the gun insertion time is about the same, after a period of time, their battery has been fully restored and ready to depart, but your car is still climbing slowly Is the pile broken? Is the power grid unstable? Or is it bad luck?

In fact, the charging speed of new energy vehicles is never solely determined by the power of the charging station. It is more like a 'coordinated battle' between cars, piles, batteries, and the environment.

Mainly focused on the following points:

① Vehicle itself: BMS is the 'overall commander'

Many car owners believe that the higher the power of the charging station, the faster the charging. In fact, it is often your car that determines the charging limit!

The BMS (Battery Management System) strategy varies for each vehicle. Just like two people drinking water with the same flow rate, one can swallow it in big gulps, while the other can only drink slowly in small sips.

★ Maximum Acceptable Power: If your car only supports a maximum of 100kW, even when plugged into a 480kW supercharging station, the speed is limited to 100kW.

★ Charging curve: Some cars have strong explosive power when the battery is low, but when it exceeds 50%, the power is insufficient.

② Battery temperature: too cold or too hot to run

Lithium batteries are highly sensitive to temperature and have their own 'comfort zone'.

Winter: Battery activity decreases at low temperatures, and BMS needs to consume electrical energy to "heat" the battery first, which limits the charging power to a very low level. That's also why charging feels particularly slow in winter.

Summer: If the battery overheats, in order to prevent thermal runaway, the system will also actively reduce the frequency and cool down.

③ State of Charge (SOC): It is normal for the battery to slow down as it is fully charged

Charging is not a uniform linear motion, but a curve that starts fast and then slows down.

0% -80%: Usually in the "constant current charging" stage, the speed is the fastest, and it is also the time when everyone feels "swoosh".

80% -100%: Entering the "constant voltage charging" stage, in order to prevent overcharging from damaging the battery, the current will gradually decrease and the speed will drop sharply.

Attention: If it's not for long-distance travel, you can charge it to 80% -90% for daily use, which saves time and maintenance. The remaining 10% often takes up half of your time!

④ Environment and Power Grid: The Invisible 'Invisible Hand'