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Switching method for working modes of unplugged hybrid vehicle

A working mode and vehicle technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., can solve the problem of unconsidered economy, and achieve the effect of improving the level of economy and reducing fuel consumption

Active Publication Date: 2021-09-14
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the control of the working mode switching conditions focuses on the dynamic performance of the vehicle, and the typical feature is based on the comparison between the vehicle's current acceleration, accelerator pedal opening, demand power and the vehicle's maximum acceleration, throttle limit and reference power To determine the switching conditions of the working mode, without considering the economy

Method used

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  • Switching method for working modes of unplugged hybrid vehicle

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Embodiment Construction

[0036] Embodiments of the present invention will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0037] In the description of the present invention, unless otherwise clearly stipulated and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a mechanical connection. A connection can also be an electrical connection, a direct connection, or an indirect connection through an intermediary, or an internal connection between two elements or an interaction relationship between two elements. Those of o...

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Abstract

The invention belongs to the technical field of power control of hybrid vehicles, and discloses a switching method for working modes of a non-plug-in hybrid vehicle. The method comprises the following steps: determining corresponding electric quantity equivalent specific fuel consumption according to the current charge state of a high-voltage storage battery; according to the current electric quantity equivalent specific fuel consumption, determining the whole vehicle equivalent specific fuel consumption in the pure electric working mode; according to the current electric quantity equivalent specific fuel consumption and the wheel end driving power, determining the whole vehicle equivalent specific fuel consumption in the series working mode; according to the current electric quantity equivalent specific fuel consumption, determining the wheel end driving power and the vehicle speed, the whole vehicle equivalent specific fuel consumption in the parallel connection mode; and according to the vehicle equivalent specific fuel consumption in the pure electric working mode, the series-connection working mode and the parallel-connection working mode, switching the vehicle to a working mode with the minimum vehicle equivalent specific fuel consumption. According to the method, the economical efficiency of the vehicle in the pure electric, series and parallel working modes is measured from the angle of the equivalent specific fuel consumption of the whole vehicle, the vehicle is controlled to switch the working modes, the fuel consumption of the vehicle is reduced, and the economical efficiency level of the vehicle is improved.

Description

technical field [0001] The invention relates to the technical field of power control of hybrid vehicles, in particular to a method for switching working modes of non-plug-in hybrid vehicles. Background technique [0002] Hybrid electric vehicles are produced in response to the shortage of battery technology and charging technology. Hybrid electric vehicles have multiple working modes. Different working modes have different energy transmission chains and torque transmission paths, and their power performance, economic performance, and driving performance are all different. In order to To give full play to the advantages of each working mode, it is necessary to switch the hybrid working mode at an appropriate time. Therefore, the control of the switching conditions of the hybrid working mode is particularly important. [0003] The powertrain of a hybrid electric vehicle mainly includes components such as an engine, a generator motor, a drive motor, a clutch, and a power batter...

Claims

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Application Information

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IPC IPC(8): B60W20/20
CPCB60W20/20B60W2510/244B60W2520/10Y02T10/62
Inventor 杨云波钟云锋赵鹏遥任亚为王昊武斐张学锋
Owner CHINA FIRST AUTOMOBILE
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