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Extended-range-electric-vehicle power system and control method thereof

A technology for electric vehicles and power systems, applied in electric vehicles, battery/fuel cell control devices, motor vehicles, etc., can solve the problems of shortening the life of the power battery and the power of the range extender can not fully follow, so as to improve the service life and reduce the Constant or smooth effect of power output and absorption for frequent charging and discharging

Inactive Publication Date: 2018-03-20
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a range-extended electric vehicle power system power regulator and its control method, which are used to solve the problems that the power of the existing electric vehicle range extender cannot be completely followed and the service life of the power battery is reduced.

Method used

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  • Extended-range-electric-vehicle power system and control method thereof
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  • Extended-range-electric-vehicle power system and control method thereof

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Embodiment Construction

[0019] The present invention will be further described with reference to the accompanying drawings and embodiments. The range-extended electric vehicle power system and its control method provided by the present invention are as follows figure 2 with image 3 Shown.

[0020] figure 2 The composition structure of the embodiment of the present invention is illustrated. This embodiment includes an extender, a power regulator, a power battery system, a DC bus, a drive motor controller, a drive motor, and wheels.

[0021] The range extender includes engine, engine ECU, ISG motor, and ISG motor controller. The engine is a 1.6L gasoline engine, and the ISG motor is a permanent magnet synchronous motor with a rated power of 30KW. The ISG motor and the engine are coaxially rigidly connected. When the extender is working, the ISG motor is first used as a motor to drive the engine to start, and then the engine drives the ISG motor to generate electricity, and the current is delivered to t...

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Abstract

The invention discloses an extended-range-electric-vehicle power system and a control method, and belongs to the technical field of new-energy-vehicle power. The extended-range-electric-vehicle powersystem and the control method are suitable for a pure electric vehicle with an extended-range device as a second power source. A power regulator formed by a super capacitor and a DC / DC convertor is additionally arranged on a traditional extended-range-device power system structure. The power regulator can provide and absorb transient power, and has the buffering protection effect on a power battery. A control system controls the power regulator according to the vehicle running state, wherein when a vehicle is accelerated, the power regulator can provide the high-order transient power componentto meet the power requirements of the whole vehicle; when the vehicle conducts braking deceleration, the power regulator can absorb the power impact component to prevent the battery from being impacted, the power battery works in the smooth and stable state all the time accordingly, frequent charging and discharging of the power battery are avoided, and the service life of the battery is prolonged.

Description

Technical field [0001] The invention belongs to the technical field of new energy electric vehicles, and specifically relates to a range-extended electric vehicle power system and a control method. technical background [0002] Facing the increasingly severe climate and energy situation, electric vehicles have received more and more attention from governments around the world because of their huge advantages in energy saving and environmental protection. Among them, as a transitional model of pure electric vehicles, extended-range electric vehicles have received extensive attention for their high efficiency, small battery capacity, and long driving range. [0003] When the extended-range electric vehicle works in the power following mode, the main energy of the vehicle comes from the range extender. During the operation of the vehicle, as the driving conditions continue to change, the required power of the entire vehicle is also constantly changing. The changing demand power usua...

Claims

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Application Information

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IPC IPC(8): B60L11/12B60L11/18B60L50/15
CPCB60L50/61B60L58/10Y02T10/62Y02T10/70Y02T10/72
Inventor 杨业张幽彤樊利康
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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