What are the Three Electric Systems in New Energy Vehicles?
1 Answers
New energy vehicles' three electric systems refer to the battery, motor, and electronic control. New energy vehicles are those that use unconventional vehicle fuels as power sources (or conventional vehicle fuels with new onboard power devices), integrating advanced technologies in vehicle power control and driving to form vehicles with advanced technical principles, new technologies, and novel structures. Detailed explanation of the three electric systems in new energy vehicles: Battery: The battery is an industry related to chemistry, mechanical engineering, and electronic control. The key component of a battery is the cell, with the most critical materials being the positive and negative electrodes, separator, and electrolyte. Well-known positive electrode materials include lithium iron phosphate, lithium cobalt oxide, lithium manganese oxide, ternary, and high-nickel ternary. Electric Drive: The electric drive consists of three parts: transmission mechanism, motor, and inverter. Currently, both domestic and international electric vehicles use single-speed reduction transmissions, meaning no clutch or gearbox. In the future, electric vehicle manufacturers will increase the complexity of transmission mechanisms while reducing the demand for motors and motor resistors, thereby improving performance and reducing costs. Electronic Control: The motor and electronic control systems in new energy vehicles replace the functions of traditional engines (transmissions), and their performance directly determines key performance indicators such as climbing ability, acceleration, and top speed of electric vehicles. Additionally, electronic control systems face relatively complex working conditions: they need to handle frequent starts and stops, acceleration and deceleration, require high torque at low speeds or when climbing, and low torque at high speeds, with a wide speed range. Hybrid vehicles also need to manage special functions such as motor starting, motor power generation, and braking energy recovery.
