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Electric automobile range extender and control method

A technology of electric vehicles and range extenders, which is applied to electric vehicles, motor vehicles, hybrid vehicles, etc., can solve problems such as unsatisfactory control effects, high cost of range extenders, and complicated control, and achieve light weight and reduced volume And weight, control structure simple effect

Pending Publication Date: 2021-01-15
YANCHENG INST OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high cost, large volume, complicated control and unsatisfactory control effect of the existing range extender for electric vehicles, the present invention proposes a range extender for electric vehicles and a control method. The range extender for electric vehicles is low in cost and small in size Small, simple structure, excellent control effect

Method used

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  • Electric automobile range extender and control method
  • Electric automobile range extender and control method
  • Electric automobile range extender and control method

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Embodiment Construction

[0025] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below in conjunction with the accompanying drawings.

[0026] attached figure 1 It is a diagram of the electric vehicle range extender device of the present invention, and its structure includes an engine, a brushless DC motor, a range extender controller, an engine throttle stepping motor, an engine damper stepping motor, and the range extender controller includes a three-phase inverter device, three-phase rectifier, microcontroller, inverter drive circuit, stepper motor drive circuit, counter EMF zero-crossing detection circuit, DC bus voltage detection circuit, DC bus current detection circuit, voltage and current sampling circuit, ambient temperature detection circuit .

[0027] The shaft of the engine is directly connected to the shaft of the brushless DC motor; the midpoint of the three-...

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Abstract

The invention discloses an electric vehicle range extender and a control method, and belongs to the technical field of electric vehicles. According to the electric vehicle range extender , the range extender brushless direct current motor is controlled to be used as a starting / power generation integrated motor; when the brushless direct current motor operates electrically, the three-phase inverterworks, and the three-phase rectifier performs current following; when the brushless direct current motor generates power and operates, the three-phase inverter does not work, the three-phase rectifier and a body diode of the three-phase inverter jointly form a rectifying circuit, and three-phase alternating current generated by the brushless direct current motor is rectified into direct current;when the brushless direct current motor generates power and operates, the voltage and rotating speed dual PI regulator regulates the rotating speed and the output voltage of the engine to keep the stability of the output voltage. The method is simple in control structure, small in calculation workload and rapid in response.

Description

technical field [0001] The invention relates to an electric vehicle range extender and a control method, belonging to the technical field of electric vehicles. Background technique: [0002] In order to realize the smooth transition from fuel vehicles to electric vehicles, domestic and foreign automobile manufacturers have developed and produced electric vehicles equipped with range extenders. The power system of electric vehicles equipped with range extenders is as follows: figure 2 As shown, the range extender is actually an auxiliary power generation system for electric vehicles. Its working principle is: when the electric vehicle battery is fully charged, the battery provides the power demand of the vehicle to drive the main drive motor to rotate; when the battery is insufficient, the The range extender generates electricity to provide the power demand of the whole vehicle, and drives the main drive motor to rotate, so as to solve the problem of insufficient mileage caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L50/62B60W20/00B60W10/06B60W10/08
CPCB60L50/62B60W20/00B60W10/06B60W10/08B60W2510/0604B60W2510/0638Y02T10/62Y02T10/70Y02T10/72
Inventor 张兰红朱文秀顾伟超吕中正曹婷
Owner YANCHENG INST OF TECH
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