Hybrid electrical vehicle energy-saving control method based on GPS (global position system) geographic information

A hybrid electric vehicle, energy-saving control technology, applied in hybrid electric vehicles, motor vehicles, control devices, etc., can solve the problem that braking energy cannot be fully recycled and utilized, so as to improve fuel-saving performance, avoid insufficient recycling, and improve recycling efficiency Effect

Inactive Publication Date: 2015-01-28
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a hybrid electric vehicle energy-saving control system based on GPS geographic information to solve the problem that the braking energy of the existing braking method cannot be fully recovered and utilized

Method used

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  • Hybrid electrical vehicle energy-saving control method based on GPS (global position system) geographic information
  • Hybrid electrical vehicle energy-saving control method based on GPS (global position system) geographic information
  • Hybrid electrical vehicle energy-saving control method based on GPS (global position system) geographic information

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Embodiment Construction

[0016] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as figure 1 Shown is the structural principle diagram of the energy-saving control system of the present invention. It can be seen from the figure that the system includes a vehicle navigation system, a vehicle controller, a power battery, a drive motor and an engine. The vehicle navigation system reads the road condition information of the driving path in front of the vehicle, including: λ slope, s λ slope length, f λ downhill flag (f λ = 1 means downhill, f λ = 0 means uphill or flat road), etc., and read the current state of the power battery soc from the power battery, and then calculate according to the energy-saving control module in the vehicle controller to control the torque T of the drive motor MG and engine torque T EN , to realize the whole control process.

[0018] Such as figure 2 Shown is a flow chart of the ...

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Abstract

The invention discloses a hybrid electrical vehicle energy-saving control method based on GPS (global position system) geographic information. The method comprises the following steps: in the running process of a hybrid electrical vehicle, obtaining current geographic information in real time through a vehicle-mounted navigation system, identifying the road condition in front of the vehicle, obtaining vehicle running state information on an unknown road, and controlling a power battery to discharge whether the current road condition is an upward slope or a flat road if the soc value of the power battery is greater than the lower limit value socl corresponding to the maximum brake energy E[lambda] capable of being recovered by a downward slope in front of the vehicle in combination with the information of the current power battery. According to the method, the reasonable space is provided for recovering brake energy, so that insufficient brake energy recovery caused by insufficient storage space of the power battery is avoided, the regenerative brake energy recovery efficiency of the vehicle is further improved, and the oil saving performance of the whole vehicle is improved.

Description

technical field [0001] The invention relates to an energy-saving control method of a hybrid electric vehicle based on GPS geographic information. Background technique [0002] Faced with the current situation of energy shortage and increasingly serious environmental pollution, hybrid electric vehicles are currently the most effective energy-saving vehicle solutions. The current energy-saving control methods for hybrid electric vehicles are all focused on using the information of each power component to determine the torque or power of the power component. Allocation is optimized, and the use environment of hybrid electric vehicles is changeable, which leads to the limitation of the energy-saving effect of the current energy-saving control method. [0003] Regenerative braking is a unique braking technology used in electric vehicles. It transmits the kinetic energy or potential energy of the vehicle to the drive motor through the transmission system during braking, and runs t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W30/18B60W10/08B60W10/06B60W10/26B60W20/12B60W20/14
CPCB60W10/06B60W10/08B60W10/26B60W30/18127B60W2510/242B60W2552/15Y02T10/62
Inventor 尚明利
Owner ZHENGZHOU YUTONG BUS CO LTD
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