A vehicle control method for a pure electric commercial vehicle
A vehicle control and vehicle controller technology, which is applied in the field of vehicle control of pure electric commercial vehicles, can solve problems such as unreasonable fault handling sequence, difficult troubleshooting, and unreasonable control sequence, so as to avoid load cut-off problems, avoid sticking problems, and save the cost of hard wires
Active Publication Date: 2022-05-20
DAYUN AUTOMOBILE CO LTD
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Problems solved by technology
[0004] The present invention provides a vehicle control method for pure electric commercial vehicles in order to solve the problems of unreasonable power-on and power-on sequence and accessory control sequence of pure electric commercial vehicles, unreasonable fault processing sequence, and difficulty in troubleshooting.
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Embodiment Construction
[0104] The present invention will be further described below in conjunction with specific examples.
[0105] A vehicle control method for a pure electric commercial vehicle. The vehicle control is controlled by a combination of an all-in-one controller, a vehicle controller VCU, a battery management system BMS, and a motor controller MCU. This embodiment adopts a five-in-one control device, including the following 11 states:
[0106] (1) High-voltage power-on process: the flow chart is as follows figure 1 Shown:
[0107] ① After the self-inspection of the VCU of the vehicle controller is completed, and after receiving the message that the self-inspection of the battery management system BMS and the five-in-one controller is completed, the CAN message is sent to the battery management system BMS and the five-in-one controller through the controller LAN CAN message High voltage instruction;
[0108] ② After the battery management system BMS receives the high-voltage command f...
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The invention discloses a vehicle control method for a pure electric commercial vehicle, and relates to the control field of a pure electric commercial vehicle. The vehicle control is composed of an all-in-one controller, a vehicle controller VCU, a battery management system BMS and a motor controller MCU combined control, including the following 11 states: high-voltage power-on process, high-voltage power-off process, gear recognition and shift method, driving torque control function, accessory control, fault judgment control, high voltage under fault, brake feedback, vehicle Safety control, slope parking control method and charging overall control. In this control method, the CAN control method is used to replace the traditional hard-wire control method, and a reasonable control method is formulated. The vehicle control method provided by the present invention largely avoids the sticking problem of the high-voltage contactor, can avoid the occurrence of the problem of disconnection of the contactor on load, has a supplementary effect on the power of the power battery, and ensures its safety and the safety of the vehicle. The dynamic performance shortens the cycle of vehicle troubleshooting and reduces the difficulty of troubleshooting.
Description
technical field [0001] The invention relates to the control field of pure electric commercial vehicles, in particular to a vehicle control method for pure electric commercial vehicles. Background technique [0002] The electronic control architecture of pure electric commercial vehicles mainly includes vehicle controllers, all-in-one controllers, power battery systems, main drive motors, gear controllers, etc. In order to ensure the safety and reliability of each link in the process of power on and off, running and charging, each controller can achieve information interaction, the whole vehicle can realize normal power on and off, normal driving under different road conditions, fault handling / downloading, etc. For functions such as power / power limiting, accessory management, and braking energy recovery, it is necessary to formulate a complete set of vehicle control strategies, and formulate detailed procedures for each function point involved. The vehicle control strategy i...
Claims
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IPC IPC(8): B60L15/20B60L58/10
CPCB60L15/20B60L58/10Y02T10/72
Inventor 杨志超吴丽娟杨维刚
Owner DAYUN AUTOMOBILE CO LTD