WO2023001056A1 - 混合动力汽车驱动模式切换的控制方法、车辆及存储介质 - Google Patents
混合动力汽车驱动模式切换的控制方法、车辆及存储介质 Download PDFInfo
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- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
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- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Definitions
- this embodiment provides a control method for switching drive modes of a hybrid electric vehicle, which is applied to the above-mentioned vehicles, and the control method includes:
- Step 1 determining the switching state of the driving mode of the hybrid electric vehicle.
- the clutch 3 is not engaged.
- the torque and speed of the engine 1 are adjusted to the parameters required in the parallel drive mode, the vehicle is still in the series drive mode, and the drive motor 4 completes the drive of the vehicle.
- T Eng_Tgt min(T Drv -T Tm_PaSoc , T Eng_PaMax ).
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- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
Claims (10)
- 混合动力汽车驱动模式切换的控制方法,包括:确定所述混合动力汽车的驱动模式的切换状态;其中,所述切换状态包括所述混合动力汽车的驱动模式由所述串联驱动模式切换至所述并联驱动模式,以及所述混合动力汽车的驱动模式由所述并联驱动模式切换至串联驱动模式;在所述切换状态是所述混合动力汽车的驱动模式由所述串联驱动模式切换至所述并联驱动模式的情况下,将发动机(1)的转矩调整为所述并联驱动模式下的发动机(1)的目标转矩,将发动机(1)的转速调整为与当前所述串联驱动模式下驱动电机(4)的转速相同;将离合器(3)吸合;将发电机(2)的转矩减小至零,并将所述驱动电机(4)的转矩减小,其中,所述驱动电机(4)减少的转矩与发电机(2)减少的转矩相同;在所述切换状态是所述混合动力汽车的驱动模式由所述并联驱动模式切换至串联驱动模式的情况下,增大所述发电机(2)的转矩以吸收所述发动机(1)的转矩,并将所述发电机(2)吸收的转矩以同等幅度转移至所述驱动电机(4)上;在所述发电机(2)的转矩等于所述发动机(1)的转矩,所述驱动电机(4)的转矩调整为所述串联驱动模式下的驱动电机(4)的目标转矩,且所述发动机(1)的转速与所述驱动电机(4)的转速相同的情况下,将所述离合器(3)分离;将所述发动机(1)的转矩和转速分别调整为所述串联驱动模式下的发动机(1)的目标转矩和发动机(1)的目标转速。
- 根据权利要求1所述的混合动力汽车驱动模式切换的控制方法,其中,将发动机(1)的转矩调整为所述并联驱动模式下的发动机(1)的目标转矩,将发动机(1)的转速调整为与当前所述串联驱动模式下驱动电机(4)的转速相同,包括:定义发动机(1)的目标转矩为T Eng_Tgt,驱动电机(4)的目标转矩为T Tm_Tgt, 发动机(1)的目标转速为n Eng_Tgt,发电机(2)的请求转矩为T Gm_Tgt,且在所述并联驱动模式下,所述发动机(1)的工作状态存在驱动与充电、驱动与助力及发动机(1)断油三种子模式,则在驱动与充电子模式下,T Eng_Tgt=min(T Drv-T Tm_PaSoc,T Eng_PaMax);在驱动与助力子模式下,T Eng_Tgt=min(T Drv,T Eng_PaMax);在发动机(1)断油子模式下,T Eng_Tgt=-T Eng_Los;T Tm_Tgt=T Drv;n Eng_Tgt=n Tm;T Gm_Tgt=-T Eng_Act+(J Eng+J Gm+J Gear)dn Eng/dt+T CL;式中,T Drv为驾驶员需求扭矩,T Tm_PaSoc为基于当前系统级芯片SOC计算的并联驱动模式下驱动电机(4)的发电负转矩,T Eng_PaMax为并联驱动模式下发动机(1)的转矩上限值,T Eng_Los为发动机(1)在当前转速下的摩擦转矩值,n Tm为驱动电机(4)的当前转速,T Eng_Act为发动机(1)的实际转矩,J Eng为发动机(1)的转动惯量,J Gm为发电机(2)的转动惯量,J Gear为发动机(1)与发电机(2)之间齿轮组的转动惯量,T CL为调速比例积分PI转矩。
- 根据权利要求1所述的混合动力汽车驱动模式切换的控制方法,在离合器(3)吸合之前还包括:判断所述发动机(1)转矩与所述发动机(1)的目标转矩的差值是否小于预设转矩差值以及所述发动机(1)的转速与所述发动机(1)的目标转速的差值是否小于预设转速差值,在发动机(1)的转矩与发动机(1)的目标转矩的差值小于所述预设转矩差值,且发动机(1)的转速与发动机(1)的目标转速的差值小于所述预设转速差值的情况下,将所述离合器(3)吸合。
- 根据权利要求1所述的混合动力汽车驱动模式切换的控制方法,其中,在所述离合器(3)吸合过程中,所述离合器(3)的油压逐步增加,且油压加载速度结合整车表现标定获取。
- 根据权利要求1所述的混合动力汽车驱动模式切换的控制方法,其中,增大所述发电机(2)的转矩以吸收所述发动机(1)的转矩,并将所述发电机(2)吸收的转矩以同等幅度转移至所述驱动电机(4)上,包括:定义发动机(1)的目标转矩为T Eng_Tgt,驱动电机(4)的目标转矩为T Tm_Tgt,发电机(2)的请求转矩为T Gm_Tgt,且在所述并联驱动模式下,所述发动机(1)的工作状态存在驱动与充电、驱动与助力及发动机(1)断油三种子模式,则在驱动与充电子模式下,T Eng_Tgt=min(T Drv-T Tm_PaSoc,T Eng_PaMax);在驱动与助力子模式下,T Eng_Tgt=min(T Drv,T Eng_PaMax);在发动机(1)断油子模式下,T Eng_Tgt=-T Eng_Los;式中,T Drv为驾驶员需求扭矩,T Tm_PaSoc为基于当前SOC计算的并联驱动模式下驱动电机(4)的发电负转矩,T Eng_PaMax为并联驱动模式下发动机(1)的转矩上限值,T Eng_Los为发动机(1)在当前转速下的摩擦转矩值,T Eng_Act为发动机(1)的实际转矩,△T Stp为发电机(2)和驱动电机(4)的转矩同步调整步长, T * Gm_Tgt和T * Tm_Tgt分别为发电机(2)的请求转矩和驱动电机(4)的目标转矩的上一个计算周期输出值。
- 根据权利要求1所述的混合动力汽车驱动模式切换的控制方法,其中,所述发电机(2)的转矩等于所述发动机(1)的转矩,所述驱动电机(4)的转矩调整为所述串联驱动模式下的驱动电机(4)的目标转矩,且所述发动机(1)的转速(1)与所述驱动电机(4)的转速相同,包括:定义驱动电机(4)的目标转矩为T Tm_Tgt,发动机(1)的目标转速为n Eng_Tgt,发电机(2)的请求转矩为T Gm_Tgt,则T Tm_Tgt=T Drv;n Eng_Tgt=n Tm;T Gm_Tgt=-T Eng_Act+(J Eng+J Gm+J Gear)dn Eng/dt+T CL;式中,T Drv为驾驶员需求扭矩,n Tm为驱动电机(4)的当前转速,T Eng_Act为发动机(1)的实际转矩,J Eng为发动机(1)的转动惯量,J Gm为发电机(2)的转动惯量,J Gear为发动机(1)与发电机(2)之间齿轮组的转动惯量,T CL为调速PI转矩。
- 根据权利要求1所述的混合动力汽车驱动模式切换的控制方法,其中,将所述发动机(1)的转矩和转速分别调整为所述串联驱动模式下的发动机(1)的目标转矩和发动机(1)的目标转速,包括:定义发动机(1)的目标转矩为T Eng_Tgt,发动机(1)的目标转速为n Eng_Tgt,则T Eng_Tgt=T Eng_Se;n Eng_Tgt=n Eng_Se;式中,T Eng_Se和n Eng_Se分别为整车能量管理模块计算得到的发动机(1)在目标发电功率点的转矩值和转速值。
- 车辆,采用权利要求1-8任一项所述的混合动力汽车驱动模式切换的控制方法。
- 存储介质,其上存储有计算机程序,该程序被处理器执行时实现如权利要求1-8任一项所述的混合动力汽车驱动模式切换的控制方法。
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