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Intelligent energy management and control method for hybrid vehicle

A technology for hybrid electric vehicles and energy management, which is applied in the direction of hybrid electric vehicles, motor vehicles, combustion engines, etc., can solve problems such as difficulty in ensuring vehicle fuel economy, optimal power battery life, and difficulty in meeting the switching requirements of multiple working modes. To achieve the effect of prioritizing driving intentions, realizing reasonable allocation, and improving fuel economy and emissions

Active Publication Date: 2018-02-16
GUILIN UNIV OF AEROSPACE TECH
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AI Technical Summary

Problems solved by technology

[0005] The existing hybrid vehicle energy management system adopts static logic threshold value policy setting, which is difficult to meet the switching requirements of multiple working modes under complex working conditions, and it is difficult to ensure the optimal fuel economy of the vehicle, prolong the life of the power battery, and realize the optimal performance under special working conditions. driving intention

Method used

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  • Intelligent energy management and control method for hybrid vehicle
  • Intelligent energy management and control method for hybrid vehicle

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] see figure 1 As shown, an energy management control method for an intelligent hybrid electric vehicle comprises the following steps:

[0033] (1) According to the driver's analysis of the parameters of the accelerator pedal during the acceleration process, the equation for the required torque at the ring gear is listed, and the logic is obtained by combining the vehicle speed, pedal opening and acceleration in the current state The threshold control method selects the working mode of the hybrid electric vehicle according to the SOC threshold of the vehicle power battery under the current situation, combined with the vehicle speed threshold and torque threshold;

[0034] (2) Build a power battery variable low threshold SOC in the software based on the fuzzy logic control method L Calculate the model, and establish the hybrid electric vehicle ene...

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Abstract

The invention belongs to the technical field of hybrid vehicle energy management. An intelligent energy management and control method for a hybrid vehicle comprises the following steps: (1) establishing a torque equation required at a ring gear, combining a vehicle speed condition, a throttle opening degree and an acceleration value in the current state to obtain a logic threshold control method and selecting a working mode for the hybrid vehicle according to an SoC threshold of a power battery of the entire vehicle, a vehicle speed threshold and a torque threshold in the current situation; (2) building a power battery low SoC threshold calculation model in software based on a fuzzy logic control method and establishing a hybrid vehicle energy management and control model based on a logicthreshold; (3) controlling the state output of power components based on the hybrid vehicle energy management and control model and according to torque distribution. The intelligent energy managementand control method for the hybrid vehicle uses the variable logic threshold so that a torque distribution strategy can better reflect the characteristics of vehicle working conditions, thereby realizing driving intentions, improving the economical efficiency of vehicle fuel and prolonging the service life of the power battery.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicle energy management, in particular to an intelligent hybrid electric vehicle energy management control method. Background technique [0002] Good fuel economy and low emission are the main economic indicators of automobile design. Traditional internal combustion engine vehicles are restricted by working conditions and cannot work for a long time at the operating point with low engine fuel consumption and low emission. In addition, the consumption of braking energy, The consumption of idle speed makes traditional internal combustion engine vehicles have disadvantages such as low fuel economy and high emissions. Hybrid vehicles use multiple power units, which can be driven by different power units according to different working conditions, so as to realize the decoupling of vehicle working conditions and engine working conditions, so that the engine can run in a high-efficiency and low...

Claims

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Application Information

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IPC IPC(8): B60W20/20B60W10/06B60W10/08B60W10/26
CPCB60W10/06B60W10/08B60W10/26B60W20/20B60W2710/242Y02T10/40Y02T10/62
Inventor 封进
Owner GUILIN UNIV OF AEROSPACE TECH
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