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Hybrid vehicle crawling control method and device, vehicle and storage medium

A technology of a hybrid electric vehicle and a control method, which is applied in the field of vehicles, and can solve the problems of reducing the control frequency of the transmission and the fluctuation of the speed of the input shaft of the transmission, etc., so as to achieve the effect of reducing the control frequency and ensuring the supply of electric power

Active Publication Date: 2020-05-19
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a hybrid vehicle crawling control method, device, vehicle and storage medium to solve the problem of fluctuations in the speed of the transmission input shaft during the crawling process of the hybrid vehicle, and to achieve stability in the hybrid crawling vehicle speed To ensure the electric power supply of the battery and high-voltage accessories, and reduce the control frequency of the transmission to the clutch

Method used

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  • Hybrid vehicle crawling control method and device, vehicle and storage medium
  • Hybrid vehicle crawling control method and device, vehicle and storage medium
  • Hybrid vehicle crawling control method and device, vehicle and storage medium

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Experimental program
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Embodiment 1

[0026] figure 1 It is a schematic flow chart of a hybrid vehicle crawling control method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where the speed fluctuation problem of the transmission input shaft needs to be solved during the crawling process of the hybrid vehicle. This method can be composed of The crawling control device of the hybrid electric vehicle can be implemented, and the device can be realized by means of software and / or hardware, and can be integrated in the hybrid electric vehicle.

[0027] Such as figure 1 As shown, the hybrid vehicle crawling control method provided in this embodiment specifically includes the following steps:

[0028] S101. When it is determined that the vehicle is currently in a creeping condition based on the acquired current powertrain component information, determine the target charging power of the power battery and the current enabling state of the motor speed control enabling con...

Embodiment 2

[0050] figure 2 It is a schematic flow chart of a creeping control method for a hybrid vehicle provided in Embodiment 2 of the present invention. This embodiment is further optimized on the basis of Embodiment 1. In this embodiment, the determination of the target charging power of the power battery and the current enabling state of the motor speed control enabling condition based on the current powertrain component information is embodied as: based on the current powertrain component information The 10s maximum discharge power of the power battery, the current power consumption of the air conditioner and the current DCDC power consumption, combined with the first calculation formula, determine the current available electric power of the motor; based on the 10s maximum charging power of the power battery in the current powertrain component information , the current power consumption of the air conditioner and the current DCDC power consumption, combined with the second calcul...

Embodiment 3

[0107] image 3 It is a schematic flow chart of a crawling control device for a hybrid vehicle provided in Embodiment 3 of the present invention. This embodiment is applicable to the situation where the speed fluctuation of the transmission input shaft needs to be solved during the creeping process of the hybrid vehicle. Realized by means of software and / or hardware, the device specifically includes: an information determination module 301, a mode determination module 302, and a creep control module 303, wherein,

[0108] The information determination module 301 is configured to determine the current enabling state of the motor speed control enabling condition based on the current powertrain component information and determine the power The target charging power of the battery;

[0109] A mode determination module 302, configured to determine a creep control mode of the vehicle based on the current enabling state, the creep control mode includes: a first crawl control mode in...

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Abstract

The embodiment of the invention discloses a hybrid power vehicle crawling control method and device, a vehicle and a storage medium. The method comprises the steps that when it is determined that thevehicle is currently in a crawling working condition based on obtained current power assembly component information, determining target charging power of a power battery and current enabling state ofa motor rotating speed control enabling condition based on the current power assembly component information; determining a crawling control mode of the vehicle based on the current enabling state; andperforming crawling control on the vehicle based on the target charging power and the crawling control mode. According to the embodiment of the invention, the problem that the rotating speed of an input shaft of a transmission fluctuates in the crawling process of the hybrid power vehicle can be solved, electric power supply of the battery and high-voltage accessories is ensured under the condition of ensuring the stable crawling speed of the hybrid power vehicle, and the control frequency of the transmission to a clutch is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of vehicles, and in particular to a hybrid vehicle creep control method, device, vehicle and storage medium. Background technique [0002] In a traditional vehicle with an engine and a dual-clutch transmission, crawling is controlled by the transmission. The energy conversion device (engine) satisfies the creeping torque demand according to the torque demand reported by the transmission, and the transmission adjusts the speed difference between the main and driven discs of the clutch to maintain the crawling speed. The vehicle speed is stable. During this process, due to the torque fluctuation of the engine, the rotational speed of the clutch active plate fluctuates, which in turn causes the rotational speed of the transmission input shaft to fluctuate. [0003] There are two energy conversion devices (engine and motor) in hybrid electric vehicles. The motor is arranged between the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/08B60W20/15
CPCB60W10/06B60W10/08B60W2710/0644B60W2710/0666B60W2710/081B60W2710/083B60W20/15Y02T10/62
Inventor 尹建坤马艳红李川刘建康梁赫奇
Owner CHINA FIRST AUTOMOBILE