The invention provides a method for selecting and switching working points of a range extender, which belongs to the field of range extender control. The method comprises the steps of establishing a universal characteristic diagram of the range extender comprising a plurality of range extender parameter data; establishing a corresponding relation table between each target optimization parameter and the range extender power, the range extender rotating speed and the vehicle speed, wherein the target optimization parameters comprise range extender noise and range extender oil consumption; determining a corresponding target optimization parameter according to the vehicle speed and/or the power demand of the range extender; searching a plurality of corresponding range extender rotating speedsin a corresponding relation table corresponding to the target optimization parameter to obtain a plurality of pre-selected working points expressed by range extender power and the range extender rotating speed; determining priorities of the range extender parameters after the target optimization parameters is removed according to the vehicle speed and/or the range extender power; comparing range extender parameters corresponding to the plurality of pre-selected working points in the universal characteristic diagram; and selecting an optimized working point of the range extender according to the priorities and the comparison result. According to the invention, a proper working point can be accurately selected.
本发明提供了一种增程器工作点的选取及切换方法,属于增程器控制领域。该方法包括:建立包括多个增程器参数数据的增程器的万有特性图;建立每一目标优化参数与增程器功率、增程器转速和车速的对应关系表,目标优化参数包括增程器噪声和增程器油耗;根据车速和/或增程器的功率需求确定相应的目标优化参数;在目标优化参数所对应的对应关系表中查找相应的多个增程器转速,以得到多个用增程器功率和增程器转速表示的预选工作点;根据车速和/或增程器功率确定除去目标优化参数后的增程器参数的优先级;对比多个预选工作点在万有特性图中所对应的增程器参数;根据优先级和对比结果选取增程器的优化工作点。本发明能够精确地选取到合适的工作点。
Method for selecting and switching working points of range extender
一种增程器工作点的选取及切换方法
16.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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