What are the advantages and disadvantages of pure electric vehicles?

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2022-06-24 10:45

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Depending on the usage, it is usually about 3 years, and if it is longer, it can be more than 5 years. 1. The battery life of pure electric vehicles, if it is a long-life lead-acid battery, is generally 1.5-2 years, and if it is a lithium iron phosphate power battery, the theoretical life is 7-8 years. 2. A pure electric vehicle refers to a vehicle that is powered by the on-board power supply and driven by a motor to drive the wheels, and meets the requirements of road traffic and laws and regulations. Due to its smaller impact on the environment than traditional cars, its prospects are widely optimistic, but the current technology is not yet mature. 3. A pure electric vehicle (Battery Electric Vehicle, referred to as BEV) is a vehicle that is completely powered by rechargeable batteries (such as lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries or lithium-ion batteries). Although it has a long history of 134 years, it has been limited to certain applications and the market is relatively small. The main reason is that due to various types of batteries, there are generally serious shortcomings such as high price, short life, large size and weight, and long charging time. 4. Provide electrical energy for the drive motor of the electric vehicle, and the motor converts the electrical energy of the power supply into mechanical energy. The widely used power source is lead-acid battery, but with the development of electric vehicle technology, lead-acid battery is gradually replaced by other batteries due to its low energy, slow charging speed and short life. 5. The developing power sources mainly include sodium-sulfur batteries, nickel-cadmium batteries, lithium batteries, fuel cells, etc. The application of these new power sources has opened up broad prospects for the development of electric vehicles. 6. The function of the driving motor: convert the electrical energy of the power source into mechanical energy, and drive the wheels and working devices through the transmission device or directly. However, due to the existence of commutation sparks, DC motors have low power, low efficiency, and heavy maintenance workload; with the development of motor control technology, it is bound to be gradually replaced by brushless DC motors (BLDCM), switched reluctance motors (SRM) and AC asynchronous motors. Electric motors are replaced, such as uncased disc type axial magnetic field DC series motors.

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What are the advantages and disadvantages of pure electric vehicles?

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