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Range extended electric vehicle control system and method

A technology of electric vehicles and control methods, which is applied in the direction of electric vehicles, control drives, motors, etc., can solve the problems of insufficient driving range, large vibration and noise, and low power density, and achieve the effect of saving fuel consumption

Active Publication Date: 2012-08-01
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design concept and usage method of the range-extended electric vehicle just make up for the insufficient driving range of the pure electric vehicle, but the existing technology of the range-extended electric vehicle has problems such as low power density, large vibration and noise, etc.

Method used

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  • Range extended electric vehicle control system and method
  • Range extended electric vehicle control system and method
  • Range extended electric vehicle control system and method

Examples

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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, an extended-range electric vehicle control system includes a traditional throttle-controlled engine 2, a generator 5 integrally connected to the engine crankshaft integrating drive and power generation functions, a vehicle-mounted power battery 14, and a vehicle controller 12 , range extender controller 7, battery management system 15, battery DC current sensor 13, engine controller 4, generator controller 6, generator terminal DC current sensor 8, permanent magnet synchronous drive motor 11, power battery 14 and power generation The motor 5 is connected together in the power line for driving the wheels, the motor controller 10, the motor DC current sensor 9, the throttle valve 1, the crankshaft position sensor 3, the flywheel of the engine 2 and the rotor of the generator 5 are rigidly connected by a mechanical device, and the generator controller Inverter power components are integrated in 6, the generator 5 is connected to the high-voltage ...

Embodiment 2

[0031] Such as figure 2 Shown, a kind of extended-range electric vehicle control method, comprises the following steps:

[0032] S1. The vehicle controller collects information from the driver's key position, pedal position, gear position, auxiliary system demand button signal, battery current SOC and charge and discharge current information allowed by the battery, and judges whether it is necessary to start the range extender and the range extender. Operating mode:

[0033] S2. If it is satisfied: battery SOC 2%, and the range extender shutdown request is set to 0; if the above two conditions are met, the range extender enters the start mode;

[0034] S3. After entering the startup mode for 50ms, judge whether the engine speed is greater than 800rpm, and enter the range extender working mode after meeting the conditions;

[0035] S4. If it is satisfied: 30%80%, enter the range extender acceleration control mode; if it meets 30%<SOC<=90% and the accelerator pedal opening<50...

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Abstract

The invention discloses a range extended electric vehicle control system, and relates to a whole vehicle control system. The range extended electric vehicle control system comprises an engine controlled by the conventional throttling valve, a generator which is integrally connected with a crank shaft of the engine and has functions of generating power and driving, a vehicle-mounted power battery, a whole vehicle controller, a range extender controller, a battery management system, a battery direct current sensor, an engine controller unit, a generator controller unit, a generator end direct current sensor and a permanent magnet synchronous driving motor, wherein the permanent magnet synchronous driving motor, the power battery and the generator are connected to a power line and used for driving wheels, a motor controller, a motor direct current sensor, the throttling valve and a crank shaft position sensor; the range extender controller communicates with the engine controller unit and the generator controller unit and sends a control instruction; and the range extender controller manages power generation energy and controls an auxiliary system according to a demand of a driver and a state of a range extender system. The invention also discloses a range extended electric vehicle control method. The range extended electric vehicle control system and the range extended electric vehicle control method can be used for electric automobiles.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a control system and a control method for an extended-range electric vehicle. Background technique [0002] The driving range of pure electric vehicles is the performance gap between current pure electric vehicles and traditional vehicles. The design concept and usage method of the extended-range electric vehicle just make up for the insufficient driving range of pure electric vehicles, but the existing technology extended-range electric vehicles have problems such as low power density and large vibration and noise. Contents of the invention [0003] The purpose of the present invention is to develop a range extender system that satisfies the requirements of the range-extended electric vehicle on the basis of the existing engine control system and generator control system without re-development and calibration of the engine controller ECU and generator controller GCU....

Claims

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Application Information

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IPC IPC(8): B60L11/02B60L11/18B60L15/00B60L50/10
CPCY02T10/644Y02T10/7077Y02T10/7005Y02T10/64Y02T10/70Y02T10/7072
Inventor 曲婧瑶张青平魏跃远
Owner BEIJING ELECTRIC VEHICLE
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