What are the main contents of high voltage power on and power on control of pure electric vehicles?

The lock in the upper right corner is to open the anti-theft, the unlock icon in the upper left corner is to unlock the anti-theft lock, the lightning in the middle is to turn on the power, press it without a key to open it, and the one in the lower left corner is to press the electric car bell.

Pure electric vehicle system.

At the moment of energy conservation and environmental protection, electric vehicles have gradually become the darling of the automotive field. For a pure electric vehicle, its main system is the high-voltage power-on and power-on control system, and its components are mainly the battery and its management system BMS, high-voltage contactor, MSD switch, pre-charge resistor, vehicle controller, etc. The control core of electric vehicles is the VCU vehicle controller, through which communication, processing and logic control can be completed.

The signal status of each control module can be detected under any working conditions, and then the logic control strategy is adopted to complete the safety control of the high-voltage power-on and power-on control system.

Hardware section. The power battery module has become the main hardware of the high-voltage upper and lower power control system of the electric vehicle, and the specific composition of the battery module is divided into the power battery part, the vehicle part, the motor controller, the battery management system, the inverter and the converter and other parts, wherein the power battery part has S1 (main positive contactor), S2 (main negative contactor), R2 (precharge resistor), S6 (pre-charged contactor), and the vehicle part has S3 (main positive contactor), S4 (main negative contactor), S5 (pre-charged contactor), R1 (pre-charge resistor) and VCU (controller).

Because of the control system, it is obvious that high pressure cannot be used. Conventional control system chips are low-voltage. Moreover, some pure electric controls continue to use the control systems of fuel vehicles. So the working voltage is 12V.

It is also impossible for the whole vehicle to use low-voltage power supply, and the only way to increase the power of electric vehicles is to increase the voltage. Otherwise, it is very difficult to supply and control the current if the current is too large, for example, a 10 kW motor uses a 12V power supply current of more than 800 amperes, and the wire needs nearly 100 square millimeters. That is, you need to use a wire as thick as your finger.

Disadvantages: First, the disadvantages of electric vehicles are also more, first of all, the electric vehicle market uses fewer people, so the cost of electric vehicle maintenance is high, once there is any problem, then you must go to the 4S store for maintenance, so that a time down at least about 1,000 yuan.

Second, the market share of electric vehicles is very low, so the value of the value of the increase rate is even lower, the general new electric vehicles, as long as a consumer hands, directly depreciated by more than 60 percent, so that the consumer who bought the car suffered heavy losses, can only use it himself, and it can be said that it is extremely cost-effective to sell it.

Third, the battery consumption of electric vehicles is also worth considering, generally speaking, a group of batteries ** is at least about 3,000 yuan, so converted, your electric car replacement battery is at least 60,000 yuan! This ** can almost buy a gasoline car, so you must consider the cost of this aspect when buying.

High voltage has high power, such as 120V power supply, 10A current, there is 1200 power; With 12V power supply, 100A current is required

In order to reduce the power loss, I don't explain so much,,, does anyone understand me?

Motor controllersIt is mainly composed of the following parts:

1. The electronic control module (electroniccontroller) includes hardware circuit and corresponding control software. Hardware circuits mainly include microprocessors.

and its minimum system, monitoring circuits for motor current, voltage, speed, temperature and other states, various hardware protection circuits, and vehicle controllers and battery management systems.

and other external control unit data exchange communication circuits. The control software implements the corresponding control algorithm according to the characteristics of different types of motors.

2. a drive.

driver) converts the control signal of the microcontroller to the motor into the drive signal of the power converter, and realizes the isolation of the power signal and the control signal.

3. The power converter module controls the motor current. Electric vehicle.

Commonly used power devices include high-power transistors, gate-shut-off thyristors, power MOSFETs, insulated-gate bipolar transistors, and intelligent power modules.

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Battery technology, motor drive and control technology, energy management technology, and electric vehicle precursor and vehicle technology are the four key technologies of electric vehicles. The electronic control system is used to control the battery, motor and other components, and its functions include: battery management, engine, motor energy management, etc.

The electronic control system consists of control systems such as ECU, sensing systems such as sensors, and subsystems such as driver intention recognition.

The material cost of the electronic control system is not high, but it takes many trials to master the key algorithms, especially for hybrid vehicles.

Control strategies and technical barriers involving oil and electricity hybridization.

Higher. As the electric energy conversion unit connecting the battery and the motor in the new energy vehicle Huijing, the motor controller is the core of the motor drive and control system, which mainly includes the hardware parts such as IGBT power semiconductor modules and their associated circuits, as well as the software parts such as motor control algorithms and logic protection.

The motor drive control system (including the drive motor and the motor controller) is the main executive structure in the operation of new energy vehicles, and the control and driving characteristics determine the main performance indicators of the vehicle.

One of the basic functions of the high-voltage electrical and controller of pure electric vehicles, this should be able to control its operation, so this should be in a run, so that it can marry a better one.

The function of the drive motor is to drive the wheels to travel;

As the power supply of the vehicle, the power battery mainly provides power to the drive motor.

The vehicle controller can collect the driver's operation information, obtain the vehicle working status information, analyze the calculation, and send instructions to the motor controller, battery management system and other control units. Realize control of the vehicle. The machine controller is a device that controls the energy transfer between the main power supply and the drive motor.

The basic function of the battery management system is to ensure the efficient and safe operation of the power battery.

The power converter converts the power supply into AC and DC as needed, so that it can be used by electrical appliances.

The high-voltage control box of pure electric vehicles is the power distribution control unit (PDU) of high-voltage power supply of pure electric vehicles.

The on-board charger is a special equipment for charging the power battery of a pure electric vehicle.

Hello, There is a big difference between the control system of pure electric vehicles and traditional cars, which is mainly reflected in the following aspects:

1.Powertrain: Conventional cars use internal combustion engines to drive the vehicle, while battery electric vehicles use an electric motor as a power source.

2.Energy conversion: The energy conversion process of traditional automobiles is chemical energy, thermal energy, and mechanical energy, while the energy conversion process of pure electric vehicles is electrical and mechanical energy. This also leads to a large difference in the control system between the two models.

3.Drive mode: Conventional cars are driven by traditional transmissions, while pure electric vehicles usually use single-speed transmissions or continuously variable transmissions.

4.Braking system: The braking system of traditional cars is braking through friction, while pure electric vehicles mostly use energy braking, that is, the kinetic energy is converted into electrical energy through the electric motor and stored in the battery, and the vehicle speed is reduced while charging.

5.Control strategy: The control strategy of traditional automobiles is mainly for the control of internal combustion engines, including ignition, fuel injection, nuclear valve control, etc. BEVs need to control parameters such as the output power of the motor, the state of charge of the battery, and the range of the vehicle.

In short, the control systems of pure electric vehicles and modified lead vehicles are quite different in terms of power source, energy conversion, drive mode, braking system and control strategy. As a result, the control systems of both vehicle models require different designs and control strategies to meet their unique technical requirements.

New energy main distribution parts, on-board chargers, DC-DC, high-voltage distribution boxes, motor controllers.

The main engines of fuel vehicles are Penamold computers, body computers, and transmission computers (automatic transmissions).

In pure electric vehicles, the power supply voltage of the whole Li Hui Hall car controller Shifan is generally ()V.

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The components of the high-voltage system of pure electric vehicles mainly include: battery pack, motor, controller, gearbox and charging equipment. Among them, the battery pack is one of the supporting components of the entire high-voltage system, which is responsible for storing electrical energy and providing power to the vehicle. The electric finger machine is a component that converts electrical energy into mechanical energy to drive the movement of the car; The controller serves as the control center of the system, adjusting the driving state such as speed, steering, and braking according to the needs of the vehicle, and at the same time managing the charging and discharging of the battery pack; The gearbox is a transmission and adjustment device that realizes the output torque of the motor and the power of the wheels, and realizes the power output and traction of the electric vehicle.

In addition to the above main components, the high-voltage system of pure electric vehicles also needs to include some minor components, such as air conditioning systems, electrical auxiliary equipment, etc. The air conditioning system is particularly important for electric vehicles, because the range of an electric vehicle is affected by climatic factors, and the energy consumption of the air conditioning system is usually higher than that of the electric motor. Electrical auxiliary equipment is mainly responsible for providing power and lighting for the car, such as auxiliary power supply, electrical switches, etc.

It should be noted that the battery pack is one of the most core and important components in the high-voltage system of pure electric vehicles, and if the battery pack is damaged or overcharged and discharged, it will greatly shorten the service life of the electric vehicle. Therefore, during the maintenance of the high-voltage system, the battery pack needs to be professionally repaired and replaced to avoid potential safety hazards and damage. In addition, in the process of using pure electric vehicles, it is necessary to pay attention to the selection and use of charging equipment, correctly select charging time and power, and avoid overcharging and waste of power.

In general, the components of the high-voltage system of pure electric vehicles cover several main parts such as battery packs, motors, controllers, gearboxes and charging equipment, as well as minor components such as air conditioning systems and electrical auxiliary equipment. The battery pack is one of the most core and important components, which needs to be professionally repaired and replaced during maintenance and use. When using electric vehicles, it is also necessary to pay attention to the selection and correct use of charging equipment to avoid potential safety hazards and waste of electricity.