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Plug-in type hybrid electric vehicle energy management method based on TTR configuration

A hybrid vehicle and energy management technology, applied in the field of energy management strategies to achieve a well-balanced effect

Active Publication Date: 2018-03-30
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few types of vehicle products using the TTR configuration in the existing market, and further development is still needed. The hybrid energy management strategy based on this configuration also needs further research. At present, there is still a lack of efficient energy management methods. Axis control strategy to achieve the balance of power, economy and four-wheel drive matching

Method used

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  • Plug-in type hybrid electric vehicle energy management method based on TTR configuration
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  • Plug-in type hybrid electric vehicle energy management method based on TTR configuration

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Embodiment Construction

[0039] Below in conjunction with the accompanying drawings, the TTR configuration-based plug-in hybrid vehicle energy management method provided by the present invention, as attached figure 1 As shown, it specifically includes the following steps:

[0040] (1). Determine the required torque of the vehicle according to the driver's accelerator / brake pedal opening;

[0041] (2). According to the required torque obtained in the step (1), in combination with the power battery SOC parameter and the vehicle speed parameter, determine each working mode of the vehicle;

[0042] (3). Calculate the required power according to the current vehicle speed and the required torque, and determine the shift schedule based on the vehicle speed and the required power.

[0043] (4). Power distribution is performed in each working mode of the vehicle determined in the step (2).

[0044] In a preferred embodiment of the present application, the following formula is used to determine the required ...

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Abstract

The invention provides a plug-in type hybrid electric vehicle energy management method based on TTR configuration. The method includes a power demand calculation link and a power distribution link. Inthe power demand calculation link, the whole vehicle demand torque is speculated according to the accelerator opening degree of a driver, and in the power distribution link, power distribution is finished in real time according to the whole vehicle demand torque. In the power distribution process, when an engine participates in drive, the relationship between the torque of the output end of the engine and the torque of the output end of a gearbox is determined according to a two-parameter shift schedule. In the two-parameter shift schedule, combined with a hybrid electric vehicle control characteristic, the demand power and the vehicle speed are selected as shift parameters. On the premise that the vehicle power performance demand is met, an energy management strategy guarantees that theengine works in a high-fuel-economical-efficiency region as much as possible and guarantees the stable working state, so that a good vehicle fuel economical efficiency target is achieved.

Description

technical field [0001] The present invention relates to an energy management method for a plug-in hybrid electric vehicle, in particular to a method based on a through-the-road (TTR) configuration and comprehensively considering the power output range of each power source and the gear position of a gearbox Energy management strategies for varying effects on engine output characteristics. Background technique [0002] Compared with other typical configurations, the through-the-road (TTR) configuration in hybrid vehicles has the advantages of low system complexity, various driving modes, and good four-wheel drive performance. Compared with traditional fuel vehicles, this configuration vehicle only adds a set of main drive motors to the power source, so it has less impact on the original structure of the vehicle and has a higher degree of integration. Any conventional power vehicle can be realized according to this scheme. Hybrid transformation has broad development prospects....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/10B60W10/06B60W10/08
CPCB60W10/06B60W10/08B60W20/10B60W2510/244B60W2520/10B60W2540/10B60W2540/12B60W2710/0666B60W2710/083Y02T10/40Y02T10/62
Inventor 何洪文曹剑飞
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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