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A vehicle control method and system for an extended-range vehicle

A vehicle control and range-extending technology, which is applied in the field of vehicle control methods and systems for range-extending vehicles, can solve the problems that the charging and discharging capabilities of high-voltage battery packs are affected by temperature and affect the normal driving of the vehicle, and shorten the heating time , shorten the heating time, and ensure the effect of normal driving

Active Publication Date: 2022-06-24
ZHEJIANG GEELY NEW ENERGY COMML VEHICLES CO LTD +3
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One purpose of the present invention is to solve the technical problem in the prior art that the charging and discharging capacity of the high-voltage battery pack is affected by the temperature in the extreme low temperature environment of the new energy vehicle, which in turn affects the normal driving of the whole vehicle

Method used

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  • A vehicle control method and system for an extended-range vehicle
  • A vehicle control method and system for an extended-range vehicle
  • A vehicle control method and system for an extended-range vehicle

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Embodiment Construction

[0051] figure 1 A schematic flowchart of a vehicle control method for an extended-range vehicle according to an embodiment of the present invention is shown. like figure 1 As shown, the vehicle control method includes:

[0052]In step S100, it is determined whether the vehicle has a driving demand under the condition that the extreme low temperature environmental conditions are met,

[0053] If so, enter the extreme low temperature environment driving strategy of using the vehicle's range extender to generate electricity and using the thermal management system to heat the power battery pack;

[0054] If not, enter the extreme low temperature environment heating strategy of using the range extender and the thermal management system to jointly heat the power battery pack;

[0055] Step S200, the vehicle is controlled by using the extreme low temperature environment driving strategy or the extreme low temperature environment heating strategy.

[0056] It can be understood tha...

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Abstract

The invention provides a vehicle control method and system for an extended-range vehicle. The vehicle control method includes the following steps: judging whether the vehicle has a driving demand under the condition that the preset limit low temperature environment condition is met, and if so, then according to the limit of using the vehicle's range extender to generate electricity and using the thermal management system to heat the power battery pack The low-temperature environment driving strategy controls the whole vehicle; if not, the whole vehicle is controlled according to the extreme low-temperature environment heating strategy that utilizes the range extender and the thermal management system to jointly heat the power battery pack. According to the solution of the present invention, the ability to drive the vehicle at any time under the extreme low-temperature environment is guaranteed, and the heating time of the power battery pack is greatly shortened. There is no need to build a special warm room for the vehicle, and the power battery is greatly shortened. The heating time for the bag to reach the usable temperature ensures the normal driving of the vehicle.

Description

technical field [0001] The present invention relates to the technical field of extended-range vehicles, in particular to a vehicle control method and system for extended-range vehicles. Background technique [0002] Nowadays, energy is in short supply and pollution is serious. The development of renewable energy has become an inevitable trend. New energy vehicles have the advantages of zero emission and no pollution. However, factors such as battery driving range, limited coverage of charging piles, and high battery prices are greatly limited. Large-scale promotion of pure electric vehicles. The range extender 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 power battery is sufficiently charged, the range extender is turned off and the whole vehicle is in pure electric working mode. When the power battery is insufficient, the range extender is turned on, and the range extender i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20B60L50/62B60L58/27
CPCB60L15/20B60L50/62B60L58/27Y02T10/72
Inventor 刘德春刘庆勃孙昊林元则韦健林蔡文远
Owner ZHEJIANG GEELY NEW ENERGY COMML VEHICLES CO LTD
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