Control method of electric four-wheel drive hybrid vehicle

A technology of hybrid electric vehicle and control method, which is applied in the field of control of the complete vehicle control system of electric four-wheel-drive hybrid electric vehicles, and can solve the problems of lack of complete vehicle control strategies, etc.

Active Publication Date: 2010-12-01
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively mature control strategies for ISG / BSG hybrid vehicles, but for the new hybrid configuration of E4WD hybrid vehicles, there is still a lack of an effective vehicle control strategy

Method used

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  • Control method of electric four-wheel drive hybrid vehicle
  • Control method of electric four-wheel drive hybrid vehicle
  • Control method of electric four-wheel drive hybrid vehicle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0066] The present invention will be further described below in conjunction with drawings and embodiments.

[0067] A control method for an electric four-wheel drive hybrid vehicle,

[0068] Such as figure 1 As shown, the vehicle includes a drive system and a control system, and the drive system includes a power battery, an engine, an ISG motor, a clutch, a rear axle drive motor (referred to as an ERAD motor), a gearbox, a front axle differential subtraction assembly, and a rear axle differential subtractor assembly. Assembly and braking system, the control system includes the vehicle controller (Hybrid Vehicle Control Unit, referred to as HCU), battery management system (Battery Management System, referred to as BMS), the first motor controller MCU (ISG), the second motor control Engine MCU (ERAD), brake control system, engine controller (Engine Management System, EMS for short) and gearbox controller;

[0069] Among them, the engine crankshaft is integrated with the output...

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PUM

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Abstract

The invention discloses a control method of an electric four-wheel drive hybrid vehicle. Under the conventional mode, the power allocation and the shift selection of the whole hybrid system in a finished vehicle controller can be determined according to the current vehicle speed, a throttle, an SOC (State Of Charge) and other signals, so that the total efficiency of the whole hybrid system is optimized rather than the efficiency of a single power source is optimized, thereby more effectively improving the economy of a finished vehicle of an E4WD hybrid vehicle and further achieving the aim of improving the economy of the vehicle fuel. In the concrete implementation process, the power allocation and the shift selection are realized by checking up VP, the power which can be actually provided by a battery and an engine in the running process of the vehicle is considered, the calculation speed of a hybrid control unit (HCU) is improved and the practicability of the control method is enhanced.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicle energy management, and in particular relates to a control method for a complete vehicle control system of an electric four-wheel drive hybrid electric vehicle (also called Electric 4 Wheel Drive Hybrid Electric Vehicle, hereinafter referred to as E4WD hybrid electric vehicle). Background technique [0002] In the process of developing hybrid vehicles, major automobile companies have launched many different hybrid configurations according to different market positioning and technical routes, among which E4WD hybrid vehicles are relatively new in recent years. On the basis of the starter / generator integrated hybrid vehicle (Integrate starter / generator hybrid vehicle, hereinafter referred to as ISG hybrid vehicle), the E4WD hybrid vehicle adds an Electric Rear Axle Drive Motor (hereinafter referred to as ERAD) electric motor), which is connected to the rear axle through a reduction ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W10/06B60W10/08B60W10/10B60W10/18B60W10/26B60W10/119B60W10/16B60W20/10
CPCY02T10/6286Y02T10/62
Inventor 黄向东徐吉汉黄河裴锋周玉山夏珩刘国猛文凯关超华
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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