The embodiment of the invention discloses an electric power distribution method and device of a hybrid power system and a hybrid electric vehicle. The electric power distribution method comprises thefollowing steps: distributing the maximum discharge power of the high-voltage battery to the DC-DC module, the electronic supercharger and the at least one motor according to a preset distribution coefficient; calculating the total torque generated by the electronic supercharger and the at least one motor according to the preset distribution coefficient; obtaining the maximum total torque under different preset distribution coefficients and the distribution coefficient corresponding to the maximum total torque; and obtaining a rotating speed limit value of the electronic supercharger and a torque limit value of the at least one motor according to the distribution coefficient. According to the embodiment of the invention, the distribution coefficient for maximizing the torque can be calculated in real time, so that the hybrid electric vehicle obtains the optimal performance of a power system under the condition of battery power limitation, and maximization of the traction torque is realized.
本发明实施例公开了一种混合动力系统的电功率分配方法、装置和混合动力汽车。所述电功率分配方法包括:将所述高压电池的最大放电功率以预设分配系数分配给所述DC‑DC模块、所述电子增压器和所述至少一个电机;根据所述预设分配系数,计算所述电子增压器和所述至少一个电机产生的总扭矩;获取不同的预设分配系数下的最大总扭矩,以及对应所述最大总扭矩的分配系数;根据所述分配系数,得到所述电子增压器的转速极限值和所述至少一个电机的扭矩极限值。本发明实施例可以实时计算使扭矩最大化的分配系数,使得混合动力汽车在电池功率限制条件下获得动力系统的最佳性能表现,实现了牵引扭矩最大化。
Electric power distribution method and device of hybrid power system and hybrid electric vehicle
混合动力系统的电功率分配方法、装置和混合动力汽车
2020-04-14
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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