Integrated type battery electric vehicle drive controller and control method

Abstract

The invention discloses an integrated type battery electric vehicle drive controller and a control method. A low-voltage input port of a low-voltage connector is connected with a main control panel, the main control panel is connected with a gate drive module, and the gate drive module is connected with an IGBT module; and a high-voltage input port of a high-voltage connector is connected with a capacitor bank, the capacitor bank is connected with the IGBT module, the IGBT module is connected with a current sensor, and the current sensor is connected with a high-voltage output port of the high-voltage connector. The functions of a vehicle control unit and a motor controller are integrated, so that vehicle drive control calculation is centralized in the main control panel, a response is made quickly, efficiency is improved, due to the fact that information does not need to be transmitted between the vehicle control unit and the motor controller through a CAN bus, no external interference condition exists, and safety is guaranteed. Only one main control panel is used, circuit boards such as a main control chip and a peripheral circuit of the vehicle control unit are all omitted, andthe cost of a whole vehicle is greatly reduced.

Description

[0001] Technical field: [0002] The invention relates to an integrated pure electric vehicle drive controller and a control method. [0003] Background technique: [0004] Existing automobiles design the vehicle controller (VCU) and the motor controller (MCU) separately, or simply encapsulate the two parts in one housing. The vehicle drive part collects the driver's intention through the VCU and receives the MCU's The state of the motor, so as to calculate the target torque, and then send it to the MCU for execution. [0005] Disadvantage 1: Vehicle driving control requires close coordination of various mechanical and electronic components, especially motor control requires faster response accuracy. The current signal transmission process is relatively long, and there is a certain time delay. [0006] Disadvantage 2: VCU and MCU work separately. Since MCU is a high-voltage device, it is easy to interfere with the communication between the two and affect driving safety. [00...

AI Technical Summary

Problems solved by technology

[0005] Disadvantage 1: Vehicle driving control requires close cooperation of various mechanical and electronic components, especially motor control requires faster response accuracy. The current signal transmission process is relatively long, and there is a certain time delay.

[0006] Disadvantage 2: VCU and MCU work separately. Since MCU is a high-voltage device, it is easy to interfere with the communication between the two and affect driving safety.

[0007] Disadvantage 3: VCU and MCU are packaged in one shell through two control modules, which wastes hardware resources

Images