The battery life has also been greatly improved. The life of lithium-ion batteries in
Used Car depends on the charging method. Under normal circumstances, if the battery is fully charged and the vehicle is driven until it is 100% discharged, if it is recharged, the number of cycles is about 1,000; if 50% of the battery power is used and then recharged, the charge and discharge cycle becomes 5,000 times; if everyone charges as they use, the maximum charge and discharge cycle is 8,000 times under normal use. It is said that the current battery life can be used for about 20 years.
(1) Battery performance depends on the battery management system
Another "key" to determining battery performance is the battery management system (BMS). The BMS is usually designed to be integrated with the battery and is also included in the integrated power control unit (EPCU). It monitors the battery's charge and discharge status, and when the battery detects an abnormality, it automatically connects or disconnects the battery power through a relay (a device that opens and closes other circuits in certain circumstances). It also allows the battery management to reduce performance at low temperatures.
(2) The drive motor achieves self-charging
Another major component of an
Used Electric Car is the "motor". It is actually part of the engine, converting electrical energy into kinetic energy and storing it in the battery. The same is true for deceleration while driving, which is called a regenerative braking system. Currently, some Used Car such as Hyundai, Kia, and General Motors are equipped with devices that can gradually adjust regenerative braking.
(3) Speed reducer is equivalent to a gearbox
Used Car also have a part that acts as a transmission. That is the "speed reducer". The speed reducer transmits power to the wheels more efficiently according to the characteristics of the motor, and the number of revolutions per minute (RPM) of the motor is much higher than that of the internal combustion engine. Therefore, it is necessary to adjust (decelerate) the number of revolutions downward instead of shifting gears that change the number of revolutions according to the situation. The speed reducer reduces the speed of the motor to the required level, so that higher torque (torque) can be obtained using Used Car.
