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Power distribution management method and device for hybrid electric vehicle

A hybrid vehicle and power distribution technology, applied in the vehicle field, can solve the problem that the accelerator pedal opening threshold cannot be accurately fitted to the driver

Active Publication Date: 2022-04-22
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention aims to propose a power distribution management method and device for hybrid vehicles to solve the technical problem that the fixed accelerator pedal opening threshold cannot accurately meet the needs of each driver

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  • Power distribution management method and device for hybrid electric vehicle
  • Power distribution management method and device for hybrid electric vehicle
  • Power distribution management method and device for hybrid electric vehicle

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Embodiment Construction

[0042] It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0043] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0044] At present, in the power distribution strategy of hybrid electric vehicles, the accelerator pedal opening threshold for judging engine start is mainly determined according to the characteristic curves of the engine and motor and the engineer's project experience. Due to differences in the usage habits of drivers, for example, for aggressive drivers, the engine is expected to start earlier, while for smooth drivers, the engine is expected to be started later. Therefore, the fixed accelerator pedal opening threshold cannot accurately meet the needs of each driver.

[0045] In addition, when the accelerator pedal opening threshold is high, the engine starts late, and there may...

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Abstract

The present invention relates to the field of vehicle technology, and provides a power distribution management method and device for a hybrid vehicle, wherein the method includes: receiving accelerator pedal opening information sent by the hybrid vehicle; Information, separately counting the first rate of change of the accelerator pedal opening when the accelerator pedal opening is in the starting zone, and the second rate of change of the accelerator pedal opening when the accelerator pedal opening is in the overtaking zone, Wherein the starting interval corresponds to the first preset range of the accelerator pedal opening, and the overtaking interval corresponds to the second preset range of the accelerator pedal opening; based on the rate of change of the first opening and the second opening calculating a driver characteristic coefficient based on the degree change rate; and sending the driver characteristic coefficient to the hybrid vehicle. It makes the starting of the engine more suitable for the needs of different drivers.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a power distribution management method and device for a hybrid vehicle. Background technique [0002] There are multiple power sources in a hybrid vehicle, so it involves how to better coordinate the working states of the multiple power sources. [0003] There are two main sources of power in a hybrid vehicle: the engine and the electric motor. The torque response of the engine is sluggish at low speeds, and the efficiency is relatively low, and the efficiency is higher at medium and high speeds. The characteristic of the motor is that the low-speed torque response is fast, but the torque and efficiency will drop sharply at high speed. Therefore, the current power distribution strategy for hybrid vehicles is: when the accelerator pedal opening is less than the accelerator pedal opening threshold, the engine is not started, and the motor is used to drive the vehicle; when the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/10B60W10/06B60W10/08
CPCB60W20/10B60W10/06B60W10/08B60W2540/106Y02T10/62B60W20/19B60W50/10B60W2540/103B60W2540/10B60W20/15B60W2510/081B60W2510/083F02N11/0803F02N2200/101
Inventor 胡志敏刘宝侯文涛王增利沈哲辉郭贵贤
Owner GREAT WALL MOTOR CO LTD