The composition of the high-voltage system for new energy vehicles mainly includes the following components:
1. Power battery: The power source of new energy electric vehicles is the power battery, which has a voltage of up to 100~400V and an output current of up to 300A. The capacity of the power battery directly determines the vehicle's range, charging efficiency, and time.
2. Drive motor and motor controller MCU: The drive motor converts electrical energy into mechanical energy to drive the car. The motor controller MCU is responsible for converting high-voltage direct current into alternating current and exchanging signals with other modules to achieve precise control of the driving motor.
3. High voltage distribution box, electric compressor, DC/DC converter, OBC car charger, PTC heater, and high-voltage wiring harness:
High voltage distribution box: As the distribution center of the vehicle's high-voltage power, similar to the electrical fuse box in the low-voltage circuit system, it ensures the safety and stability of the vehicle's high-voltage power consumption.
Electric compressor: It is the power source for the air conditioning system cycle of new energy vehicles, driven by high-voltage electricity.
DC/DC converter: plays a key role in converting high-voltage direct current into low-voltage direct current, ensuring the balance and stability of the vehicle's power supply.
OBC car charger: responsible for converting AC power to DC power to charge the power battery.
PTC heater: It is the heat source for the warm air system of pure electric vehicles, replacing the warm air tank on traditional internal combustion engine vehicles.
High voltage wiring harness: connecting accessories such as wiring harnesses and connectors, used for the transmission of electrical energy between various high-voltage components.