A driving control method and device

A technology of motor controller and vehicle controller, which is applied in the direction of control device, battery/fuel cell control device, control drive, etc., can solve problems such as driving restrictions, achieve the effect of reducing restrictions and ensuring driving experience

Active Publication Date: 2019-03-26
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a driving control method and device to solve the problem of relatively large restrictions on driving in the prior art when there is a communication failure between the motor controller and the battery management system

Method used

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  • A driving control method and device
  • A driving control method and device
  • A driving control method and device

Examples

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no. 1 example

[0062] In order to better understand the technical solutions provided by the embodiments of the present invention, firstly, the control framework involved in the embodiments of the present invention will be described, as shown in figure 1 Shown:

[0063] Among them, VCU means vehicle controller, BMS means battery management system, MCU means motor controller, Motor means drive motor (hereinafter referred to as motor), APS means accelerator pedal, BPS means brake pedal, GP means gear position, DC / DC Indicates the power converter, PTC indicates the air conditioning heating system, and EAS indicates the air conditioning compressor. In this control framework, the information interaction between the VCU and the BMS mainly includes: the BMS reports the state information and fault information of the power battery to the VCU, and at the same time receives the control commands from the VCU, such as pre-charging, closing or disconnecting the high-voltage relay, etc. The information int...

no. 2 example

[0098] An embodiment of the present invention provides a drive control device, which is applied to a motor controller. Such as Figure 4 As shown, the drive control device includes:

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Abstract

The invention provides a driving control method and device, and is applied to motor controllers. The driving control method comprises the following steps of detecting whether a communication failure occurs between the motor controller and a battery management system or not; if yes, calculating residual available capacity and a SOC (state of charge) value of a power battery, and determining a maximum allowable charging threshold and a maximum allowable discharging threshold of the power battery; and according to the residual available capacity and the SOC value of the power battery obtained by calculation, and the determined maximum allowable charging threshold and the determined maximum allowable discharging threshold of the power battery, performing control logic calculation, so as to realize the driving control of a motor. According to a technical scheme of the driving control method provided by the embodiment of the invention, when the communication failure occurs between the motor controller and the battery management system, the motor controller can still perform logical control, so that the driving control of the motor is realized, the limit to driving is reduced, and driving feelings and travelling feelings of staff in a vehicle are guaranteed.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a driving control method and device. Background technique [0002] For pure electric vehicles, the vehicle controller (Vehicle Control Unit, referred to as VCU), battery management system (Battery Management System, referred to as BMS) and motor controller (Motor Control Unit, referred to as MCU) are the three core controls of pure electric vehicles. There is a lot of information interaction between the three systems. Among them, the motor controller receives the enable command and fault command sent by the vehicle controller and the battery status sent by the battery management system (such as the maximum allowable charging and discharging power of the battery, the remaining available capacity of the battery, the state of charge value of the battery (State of Charge (SOC for short) and other information, and then according to the gear position, accelerator pedal and brake p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/28B60L58/10
CPCB60L15/28B60L58/13B60L2240/42B60L2240/54B60L2260/44Y02T10/70Y02T10/72Y02T90/16
Inventor 李玮代康伟梁海强张德清张小帅
Owner BEIJING ELECTRIC VEHICLE
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