What maintenance do pure electric vehicles need to do during use?

Today's electric vehicles are better equipped with high-density ternary lithium batteries. This kind of battery doesn't pay much attention to battery memory, so it's not necessary to use it all. Moreover, there is a perfect BMS battery management system to control the overcharge and overdischarge of batteries. There is still a gap between the actual cruising range of vehicles and the cruising range of NEDC. Although it is not big, it is better to know the mileage under driving conditions, so it is relatively safe to use.

According to two years' personal experience, the batteries of electric vehicles will be fine as long as they are not over-discharged. So what is the overdischarge? The data given by general manufacturers is not less than 20%. As for whether it is good to be full, it seems that people have different opinions. Some people worry that full charge will affect battery life (overcharge). In fact, this kind of worry is unnecessary, because BMS will disconnect the power supply when it is almost full. Pressure fuel injection refers to pumping gasoline and diesel out of the fuel tank with a fuel pump. The concept of "pump" is to "pressurize" the liquid. Fuel flows from the oil pump to the oil pipe and then to the oil nozzle, and the fuel in the pipeline is under pressure. At this time, the nozzle is closed, but after the pressure reaches the threshold, the nozzle will be energized to open the solenoid valve.

At this time, the high pressure will inject the fuel into the intake manifold or cylinder through the nozzle hole, and the pressure injection of the nozzle is no longer affected by the temperature. As long as the fuel is not frozen, the ideal atomization effect can be achieved at the moment of cold start. So the EFI engine does not need to be preheated in situ. As for carburetor technology, it has been banned for nearly 20 years, and new owners don't have to look through old calendars. The ECU driving computer will still "automatically warm up the car" after the EFI engine is started, which means actively increasing the fuel injection quantity and speed, and generating higher heat energy by burning more fuel; Quickly heat the engine block and antifreeze coolant, so that the engine block can reach the temperature standard required for "optimal thermal efficiency" in the shortest time.