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Device and method for energy management and vehicle speed adjustment of a hybrid electric vehicle

A technology for hybrid electric vehicles and vehicle speed adjustment, which is applied to hybrid electric vehicles, motor vehicles, control devices, etc., can solve problems such as being unsuitable for practical applications, long calculation time, etc., to achieve full practicability and improve energy-saving effects.

Active Publication Date: 2019-02-01
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

The disadvantage of this study is that it requires a long calculation time and is not suitable for practical applications due to the dynamic programming algorithm used in part

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  • Device and method for energy management and vehicle speed adjustment of a hybrid electric vehicle
  • Device and method for energy management and vehicle speed adjustment of a hybrid electric vehicle
  • Device and method for energy management and vehicle speed adjustment of a hybrid electric vehicle

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Embodiment Construction

[0048] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0049] The hybrid electric vehicle energy management and vehicle speed adjustment device and method according to the embodiments of the present invention apply the traffic flow information to the energy management of the hybrid electric vehicle by adopting the Pontryagin minimum value principle. The speed range of the vehicle during driving takes the power distribution of the two power sources and the speed of the vehicle as the optimization object of the HEV. Through the combination of the speed optimization and the energy distribution optimization of the HEV, it is possible to avoid rapid...

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Abstract

The invention relates to the technical field of new energy source vehicles and especially relates to a device and method for energy management and vehicle speed adjustment of a hybrid vehicle. The device is characterized in that a traffic flow prediction module is used to acquire a feasible vehicle speed scope within a front driving scope; a vehicle speed sensor is used to acquire vehicle speed information; a control module of a power transmission system acquires vehicle state information; a finished vehicle controller computes an optimal result of power distribution and an optimal result of the vehicle speed adjustment respectively according to the feasible vehicle speed scope, the vehicle speed information and the vehicle state information; the control module of the power transmission system controls a vehicle state according to the optimal result of the power distribution; and a vehicle speed prompt module reminds a driver of vehicle speed adjust according to the optimal result of the vehicle speed adjustment. According to the invention, through combination of speed optimization and energy distribution optimization of the hybrid vehicle, driving behaviors such as hasty acceleration and hasty speed reduction which increase vehicle energy consumption can be avoided; and energy saving effects are greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a device and method for energy management and vehicle speed adjustment of a hybrid vehicle. Background technique [0002] Due to the use of two completely different power sources, the energy management of hybrid vehicles is a very important research direction. The main power source is generally an energy-type power source such as an engine and a fuel cell, and the auxiliary power source is a power-type power source such as a battery and a super capacitor, and has the function of recovering energy. When the vehicle accelerates, the power required is large, and the auxiliary power source will assist the main power source to send the required power to the vehicle body; during the braking of the vehicle, the auxiliary power source will recover part of the kinetic energy of the vehicle; at the same time, in some special circumstances If the state of charge (SOC) of the au...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/00B60W30/18B60W50/14B60W40/04B60W40/105
CPCB60W20/00B60W30/18B60W40/04B60W40/105B60W50/14B60W2050/143B60W2050/146
Inventor 郑春花
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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