A vehicle range extender control method, system and vehicle

A control method and control system technology, applied in the field of vehicles, can solve problems such as unreasonable distribution of range extenders and batteries, high energy consumption, etc., and achieve the effects of improving driving experience, reasonable energy distribution, and reducing energy consumption of the entire vehicle

Active Publication Date: 2020-08-14
ZHEJIANG GEELY NEW ENERGY COMML VEHICLES CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Another object of the present invention is to solve the problem of unreasonable distribution of the range extender and the battery when the existing range extender is working, resulting in high energy consumption

Method used

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  • A vehicle range extender control method, system and vehicle
  • A vehicle range extender control method, system and vehicle
  • A vehicle range extender control method, system and vehicle

Examples

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Embodiment Construction

[0042] figure 1 It is a schematic structural diagram of a vehicle power system 100 according to a specific embodiment of the present invention. Specifically, the vehicle of this embodiment may include a power system 100, and the power system 100 may include a power battery 20, a battery management system 30, a range extender 40, a drive motor 50, a motor management system 60, and a vehicle range extender control system 10, The vehicle range extender controller system 10 is used to control the operation of the range extender 40 . The power system 100 also includes other electrical accessories 70, such as air conditioners, hollow screens, and the like. Specifically, the range extender 40 may include an engine and a generator. When the vehicle is running, the power battery 20 can provide electric energy to the driving motor 50 and electrical accessories, and the range extender 40 can provide electric energy to the driving motor 50 and electrical accessories, and can also charge...

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Abstract

The invention provides a vehicle range extender control method and system and a vehicle, and relates to the technical field of vehicles. The vehicle range extender control method of the invention comprises the following steps: obtaining engine speed omega; calculating a required torque T corresponding to the engine at the engine speed omega; comparing the required torque T with the engine torque interval [T1, T2] corresponding to the high-efficiency power generation interval [P1, P2] at the engine speed omega, and selecting a torque value; allowing the control range extender to operate at thepower point corresponding to the torque value. The invention controls the range extender to work at the optimum torque to improve the driving feeling, and ensures the best match between the range extender and the power battery, so as to obtain the best efficiency of the whole vehicle system.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a control method and system for a vehicle range extender and a vehicle. Background technique [0002] The range-extended vehicle is a pure electric vehicle equipped with a range extender (an auxiliary power unit composed of an engine, a generator and a rectifier). When the battery is fully charged, the car runs in pure electric mode; The generator generates electricity to charge the battery or directly drives the motor, thereby increasing the driving range of the electric vehicle. [0003] At present, the control of the range extender includes the fixed-point control of the range extender and the power following control. The fixed-point control method of the range extender uses the same power point under different driving conditions, which has the following disadvantages: first, it will cause poor driving experience; second, when the power demand is low, the fixed-point control...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/10B60W10/06B60L50/62B60L50/15
CPCB60W10/06B60W20/10B60W2510/0638B60W2520/10B60W2540/10B60W2710/0666Y02T10/62Y02T10/70Y02T10/7072
Inventor 李琳刘德春尤霖林元则韦健林胡红星
Owner ZHEJIANG GEELY NEW ENERGY COMML VEHICLES CO LTD
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