Hybrid vehicle control method and system
A technology of hybrid electric vehicle and control method, which is applied in the control system of hybrid electric vehicles and the field of control of hybrid electric vehicles, and can solve the problem of high battery power consumption, affecting vehicle starting performance, unable to meet electric crawling and vehicle energy consumption requirements, etc. problems, to achieve the effect of ensuring smoothness and increasing power generation
Active Publication Date: 2018-03-06
GUANGZHOU AUTOMOBILE GROUP CO LTD
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Problems solved by technology
However, ERAD motors and electric air conditioners in E4WD hybrid vehicles consume a lot of battery power, and the balance of SOC (state of charge, that is, remaining power) has become a difficult point of control
Especially in congested conditions, general idling power generation cannot meet the high energy consumption requirements of electric crawling and vehicles. If the power generation is increased, it will affect the starting performance of the vehicle in hybrid mode
Method used
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[0019] The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0020] like figure 2 As shown, it is a schematic flow chart of the first embodiment of the control method of the hybrid vehicle of the present invention; the control method of this embodiment can be applied in the vehicle controller of the hybrid vehicle, and includes the following steps:
[0021] S21. When the vehicle is running in the range-extending mode, if the power of the battery is lower than the preset power range, and the energy consumption demand of the vehicle is higher than the preset energy consumption range, increase the rotor speed of the engine to the preset A set first speed range, wherein, in the range-extended mode, the engine rotor drives the generator to charge the battery;
[0022] S22. When the conditions for switching from the range-extended mode to...
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The present invention provides a control method and system for a hybrid electric vehicle. The method includes the following steps: when the vehicle is running in the range-extending mode, if the electric quantity of the battery is lower than the preset electric quantity range, and the energy consumption demand of the vehicle is high In the preset energy consumption range, the rotor speed of the engine is increased to the preset first speed range, wherein, in the range-extended mode, the engine rotor drives the generator to charge the battery; When the range mode is switched to the hybrid mode for start control, reduce the rotor speed of the engine to the preset second speed range and then switch to the hybrid mode for start control, wherein the hybrid mode The engine rotor drives the vehicle's transmission. The invention can not only control the SOC to be in a balanced state, but also ensure the smooth starting performance of the vehicle in the hybrid mode.
Description
technical field [0001] The invention relates to the technical field of hybrid vehicles, in particular to a control method for a hybrid vehicle and a control system for a hybrid vehicle. Background technique [0002] In the process of developing hybrid vehicles, there are currently many different hybrid configurations, among which E4WD (Electric 4 Wheel Drive Hybrid Electric, electric four-wheel drive hybrid electric) hybrid vehicles are developing rapidly. [0003] like figure 1 As shown, it is a structural schematic diagram of a drive system capable of providing AMT shift torque compensation in the traditional technology; On the basis of E4WD hybrid vehicles, a rear axle drive motor (Electric Rear AxleDrive Motor, hereinafter referred to as ERAD motor) is added, which is connected to the rear axle through a reduction gear. For this four-wheel-drive hybrid vehicle, choosing a suitable transmission device has a great influence on the cost and fuel consumption of the hybrid ...
Claims
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IPC IPC(8): B60W10/06B60W10/26B60W20/00B60W40/00B60W30/182
Inventor 苏建云甘新华刘前锦
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD