Today, Xiao Bian would like to introduce the car to you. Many friends know that there are many accessories on our roof, and they look smaller and smaller, but their functions and uses are very large. In fact, our electric cars and cars are one principle. There are a lot of accessories on electric cars, so let's take a look.

What are the electric vehicle parts?

Electric vehicle parts introduction: Motor

Motor is the main component of electric vehicle. It is very important to choose suitable motor type and reasonable rated parameters. For example, it is not accurate to only represent a motor with 10 hp or 15 HP (1 HP = - 735.499w), because the power varies with voltage and current, and the peak power is much higher than the continuous power. The same index is used to compare the engine and gasoline engine, because the engine has continuous power under load, and the gasoline engine gives peak power without load dynamometer. For the sake of accuracy, motors shall be identified by name or type. There are several kinds of motors commonly used in electric vehicles. One. Series excitation brush DC motor series excitation brush DC motor (excitation winding and armature in series) is an electric vehicle (splashing water tank) currently running on the road. This kind of motor has the highest torque, is cheaper than other types of motors, and is widely used. The controller is relatively simple. 2. High speed AC motor needs decelerating, expensive and complex speed regulating device. Three. Brushless DC motors require expensive controllers, but they require little maintenance. Four. Permanent magnet motor (PMM) has high efficiency in a very narrow speed range, and its efficiency will decrease rapidly when the speed changes in normal driving. Five. Compared with series excitation motor, parallel excitation and compound excitation motor have higher manufacturing cost and higher acceleration performance.

Electric vehicle parts introduction: motor controller

Motor controller is an integrated circuit, through active operation, according to the set direction, speed, angle and response time to control the motor work. In the electric vehicle, the function of the motor controller is to convert the electric energy stored in the power battery into the electric energy needed to drive the motor according to the instructions of the gear, throttle and brake, so as to control the starting operation, forward and backward speed, climbing force and other driving states of the electric vehicle. Or help the electric car brake and store some of the braking energy in the power battery. It is one of the key parts of electric vehicles. CNC programmable stepper motor controller can use stepper motor driver and stepper motor to form a perfect stepper motor control system. It can control three step motor to run time-sharing. The controller adopts computer programming language, with input, output, counting and other instructions. It has the characteristics of flexible programming and wide adaptability, and can be widely used in various control automation fields.

Introduction of electric vehicle parts: dc7dc converter

Electric vehicles usually use a 12V auxiliary battery to supply power to the original 12V accessories (such as lamps, horns, etc.). However, unlike gasoline vehicles, electric vehicles do not have an alternator to charge the battery. One way is to use a 12 volt battery that can be deeply charged and discharged. The capacity is as large as possible, but if you're going to drive at night, there's not enough power. When the battery runs out, the headlamp will dim and the turn signal lamp will flash slowly. If some parts of the drive system cannot obtain the required signal powered by the auxiliary battery, the operation of the vehicle may also be affected. Another method is to connect 12V from two modules of the main battery pack, but it will cause uneven discharge of the battery pack and affect the performance and life of the battery. A better way might be to use a DC / DC1 converter. Dc7dc reduces the voltage at both ends of the battery to 13.5V, which is the same as the rated output of the alternator. Due to the DC / DC converter connected with the whole battery pack, there is no uneven discharge, the required current is very low, which has little influence on the driving range, and it does not need a single 12V charging circuit to charge the auxiliary battery. For safety reasons, complete removal of the auxiliary battery is not recommended. At night, if the DC / DC converter fails or the battery voltage is lower than the off voltage of the converter, the auxiliary battery has enough power to drive the car home. Because batteries are not used to start gasoline engines, smaller starting batteries can be used instead.