WO2021209053A1 - 车辆驱动控制方法、系统 - Google Patents

车辆驱动控制方法、系统 Download PDF

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Publication number
WO2021209053A1
WO2021209053A1 PCT/CN2021/087905 CN2021087905W WO2021209053A1 WO 2021209053 A1 WO2021209053 A1 WO 2021209053A1 CN 2021087905 W CN2021087905 W CN 2021087905W WO 2021209053 A1 WO2021209053 A1 WO 2021209053A1
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WIPO (PCT)
Prior art keywords
parallel
range
speed
torque
generator
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PCT/CN2021/087905
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English (en)
French (fr)
Inventor
李云飞
李志强
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长城汽车股份有限公司
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Application filed by 长城汽车股份有限公司 filed Critical 长城汽车股份有限公司
Priority to US17/790,476 priority Critical patent/US20230045073A1/en
Priority to EP21787775.2A priority patent/EP4063213A4/en
Publication of WO2021209053A1 publication Critical patent/WO2021209053A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0638—Engine speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/087—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/10—Change speed gearings
    • B60W2510/1005—Transmission ratio engaged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0644—Engine speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0666—Engine torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/08—Electric propulsion units
    • B60W2710/081—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/08—Electric propulsion units
    • B60W2710/083—Torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/10—Change speed gearings
    • B60W2710/1005—Transmission ratio engaged
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the present disclosure relates to the field of vehicle technology, and in particular to a vehicle drive control method and system.
  • Hybrid vehicles are a combination of traditional internal combustion engine vehicles and pure electric vehicles, and have the advantages of both internal combustion engine vehicles and pure electric vehicles.
  • Most hybrid vehicles have the following three operating modes: pure electric operation mode (the engine does not work), series operation mode (the engine and the drive motor work in series), and the parallel operation mode (the drive motor and the engine work in parallel). Different operating modes are the main ones.
  • the present disclosure aims to propose a vehicle drive control method to reduce the temperature of the generator or drive motor or avoid further deterioration of the fault without affecting the dynamics of the vehicle.
  • the vehicle drive control method includes: acquiring performance-related information of a generator and/or drive motor of a hybrid vehicle; When the performance of the hybrid vehicle is degraded, it is determined whether the hybrid vehicle meets the activation conditions of the parallel operation mode; and when the hybrid vehicle meets the activation conditions of the parallel operation mode, all the hybrid vehicles are activated.
  • the parallel operation mode is used to restore the working performance of the generator and/or the drive motor to a normal state.
  • the activation conditions of the parallel operation mode include: the parallel target speed of the engine is within a preset parallel speed operating range, and the parallel target torque of the hybrid vehicle is within the parallel torque operating range corresponding to the parallel target speed Or the fault information shows that the generator and/or the drive motor cannot continue to work, and the parallel target speed of the engine is within the parallel maximum speed range and the parallel target torque is within the parallel maximum torque range; wherein, the parallel connection
  • the maximum rotational speed range and the parallel maximum torque range are configured to reflect the maximum rotational speed range and the maximum torque range that the engine can output when the engine is working normally in the parallel operation mode, and the parallel rotational speed working range is smaller than the parallel maximum rotational speed Range, the parallel torque working range is smaller than the parallel maximum torque range.
  • the vehicle drive control method further includes: determining the parallel rotation speed operating range and the corresponding parallel torque operating range according to the temperature of the generator and/or the drive motor.
  • the determining the operating range of the parallel speed and the corresponding operating range of the parallel torque according to the temperature of the generator and/or the drive motor includes: according to the real-time all the operating range of the generator and/or the drive motor.
  • the temperature modifies the parallel speed working efficiency range and its corresponding parallel torque working efficiency range to obtain the parallel speed working range and its corresponding parallel torque working range; wherein, the parallel speed working efficiency range and its corresponding The parallel torque operating efficiency range is configured to be obtained when the engine is operating below a safe temperature threshold, and the parallel rotational speed operating range and its corresponding parallel torque operating range are configured to follow the generator and / Or the temperature of the drive motor increases.
  • the vehicle drive control method further includes: obtaining a parallel target gear that reflects user needs; and determining the parallel target speed according to the parallel target gear.
  • the vehicle drive control method further includes: controlling the hybrid vehicle to adjust the engine, generator, and drive motor in the parallel operation mode. Load distribution.
  • the controlling the hybrid vehicle to adjust the load distribution in the parallel operation mode includes: controlling the total work load of the hybrid vehicle unchanged in the parallel operation mode, and reducing the generator and / Or the working load of the drive motor.
  • the present disclosure also proposes a vehicle drive control system, the vehicle drive control system is configured with a controller, and the controller is used to execute the above-mentioned vehicle drive control method.
  • the present disclosure also proposes a computer-readable storage medium on which computer program instructions are stored, and the instructions are used to make a machine execute the above-mentioned vehicle drive control method.
  • the vehicle drive control system and the computer-readable storage medium have the same advantages as the aforementioned vehicle drive control method over the prior art, and will not be repeated here.
  • Fig. 1 is a flowchart of a vehicle drive control method according to an embodiment of the disclosure
  • Fig. 2 is a diagram showing the working range of the engine according to the embodiment of the disclosure.
  • FIG. 3 is a flowchart of a method for acquiring a parallel target speed of an engine according to an embodiment of the disclosure
  • Fig. 4 is a flowchart of a method for obtaining a target gear reflecting user needs in the present disclosure.
  • FIG. 5 is a flowchart of the activation method for judging whether the hybrid vehicle meets the parallel operation mode of the present disclosure.
  • the pure electric drive mode is the combination of a high-voltage battery and a drive motor to drive the vehicle (the generator runs only after the engine is started) , So it does not run in this mode)
  • the series operation mode is to realize the driving of the vehicle through the series cooperation of the engine, the generator, and the driving motor
  • the parallel operation mode is to realize the driving of the vehicle through the engine, and the generator and the driving motor operate separately.
  • Different vehicles have different proportions in the operation process of each mode, some are mainly in series operation mode, and some are mainly in parallel operation mode.
  • Fig. 1 is a flowchart of a vehicle drive control method. As shown in Figure 1, the vehicle drive control method includes:
  • S101 Acquire performance-related information of a generator and/or drive motor of a hybrid vehicle.
  • the performance-related information includes temperature and/or fault information.
  • the temperature is the hardware temperature corresponding to the generator and/or the driving motor, and the temperature can be collected by a specially designed temperature sensor, or can be collected by a temperature sensing device already installed on the vehicle.
  • the fault information is used to show that the generator and/or drive motor has a fault or no fault, and when a fault occurs, it can show the type of fault, that is, a fault code, which can be combined with the current vehicle operating conditions Identifies the ability of the engine and/or the drive motor to continue working, or can determine whether the fault will aggravate the deterioration of the state of the generator and/or the drive motor, where the state deterioration is specifically manifested by the generator and/or Or the temperature of the drive motor continues to rise or be damaged.
  • a fault code which can be combined with the current vehicle operating conditions Identifies the ability of the engine and/or the drive motor to continue working, or can determine whether the fault will aggravate the deterioration of the state of the generator and/or the drive motor, where the state deterioration is specifically manifested by the generator and/or Or the temperature of the drive motor continues to rise or be damaged.
  • the precondition for judging the conditions for entering the parallel operation mode is that: the temperature of the generator and/or the drive motor exceeds a safe temperature threshold and/or the fault information shows that the generator and/or the drive motor has a fault , That is, the performance of the generator and/or drive motor has decreased.
  • the safe temperature threshold is configured to show the maximum temperature value at which the generator and/or the drive motor can work normally, that is, the maximum operating temperature value at which no performance degradation occurs.
  • the normal state is that the temperature of the generator and/or the driving motor drops below the safe temperature threshold and/or there is no fault.
  • the activation condition of the parallel operation mode of the hybrid vehicle includes any one of the following two conditions.
  • the following condition 1 or condition 2 is used to adjust the load distribution of the hybrid vehicle on the basis of ensuring that the engine can work. In turn, it is ensured that the temperature of the generator and/or the drive motor is reduced to below the safe temperature threshold and/or there is no fault, and the performance is restored to normal operation:
  • the parallel target speed of the engine is within the preset parallel speed operating range, and the parallel target torque of the hybrid vehicle is within the parallel torque operating range corresponding to the parallel target speed.
  • the parallel rotation speed working range is used to reflect the rotation speed range of the engine, and the parallel torque working range is associated with the parallel target rotation speed.
  • the parallel target speed is the speed that the user expects to reach, that is, the user's vehicle performance requirements.
  • the parallel target torque is not the torque of a certain motor or engine, but the target torque of the entire vehicle.
  • Condition 2 The fault information shows that the generator and/or the drive motor cannot continue to work; and the parallel target speed is within the parallel maximum speed range, and the parallel target torque is within the parallel maximum torque range.
  • Fig. 2 is a diagram of the engine operating range. The above condition 1 and condition 2 will be described in detail in conjunction with Fig. 2 below.
  • the abscissa in Figure 2 refers to the parallel speed of the engine, and the ordinate refers to the parallel torque of the engine.
  • L 1 refers to the optimal operation curve of the engine (OOL, Optimal Operation Line);
  • L max refers to the parallel maximum operating torque curve;
  • L maxE refers to the parallel maximum efficiency torque curve;
  • L min refers to the parallel minimum operating torque curve;
  • L minE refers to parallel generation of minimum efficiency torque curve;
  • N max refers to the maximum speed parallel;
  • N maxE speed refers to the maximum efficiency in parallel;
  • N min refers to the minimum speed parallel;
  • N minE efficiency refers to the minimum speed parallel.
  • the parallel maximum speed range [N min -N max ] and the parallel maximum torque range [L min , L max ] (the [L min , L max ] refers to the L min corresponding to [N min -N max] ,
  • the maximum value and the minimum value in the L max curve) represent the area B in the figure (including the middle area A), and the [N min -N max ] and the [L min , L max ] are configured to reflect each
  • the parallel speed range and maximum torque range that the engine can output during normal operation and the parallel speed working range [N 1 -N 2 ] is less than the parallel maximum speed range [N min -N max ]
  • the parallel torque working range [L 1 , L 2 ] is smaller than the parallel maximum torque range [L min , L max ], where [N 1 -N 2 ] and [L 1 , L 2 ] refer to
  • the area of is not shown in FIG. 2, it refers to an area in area B, which is a preset area.
  • the parallel rotational speed operating range [N 1 -N 2 ] and the parallel torque operating range [L 1 , L 2 ] are determined according to the acquired temperature of the generator and/or drive motor. Specifically, the higher the temperature of the generator and/or the drive motor, the larger the parallel rotation speed operating range [N 1 -N 2 ] and the parallel torque operating range [L 1 , L 2 ]. It is described with reference to FIG. 2 that, as the temperature of the generator and/or drive motor increases, the parallel rotational speed operating range [N 1 -N 2 ] and the parallel torque operating range [L 1 , L 2 ] Gradually approach the parallel maximum speed range [N min -N max ] and the parallel maximum torque range [L min , L max ].
  • the working range of parallel speed [N 1 -N 2 ] and its corresponding working range of parallel torque [L 1 , L 2] are determined according to the temperature of the generator and/or drive motor. ] comprising: correcting the efficiency of the parallel speed range [N minE, N maxE] its efficiency torque range corresponding to the parallel [L minE in real time according to the temperature of the generator and / or drive motor, L maxE ] (corresponding to area A in Figure 2) to obtain the parallel speed working range [N 1 -N 2 ] and its corresponding parallel torque working range [L 1 , L 2 ];
  • the [N minE, N maxE] and corresponding to the [L minE, L maxE] is configured in the engine is obtained when the work safety temperature threshold, which reflects the engine speed and torque High-efficiency output mode, and the [N 1 -N 2 ] and its corresponding [L 1 , L 2 ] are configured to expand as the temperature of the generator and/or drive motor increases.
  • the [N 1 -N 2 ] and its corresponding [L 1 , L 2 ] can only reach the maximum range of the [N min -N max ] and [L min , L max ], which is the area B in the figure edge.
  • the conditions for entering the parallel operation mode will be corrected according to the temperature of the generator and/or the drive motor, so as to ensure that the engine can work with high efficiency, and the vehicle load distribution is adjusted to ensure that the generator And/or the performance of the drive motor is safe.
  • FIG. 3 is a flowchart of a method for acquiring a parallel target speed of an engine according to the present disclosure. As shown in FIG. 3, the method for acquiring a parallel target speed of an engine includes:
  • FIG. 4 is a flowchart of the method for obtaining a parallel target gear reflecting user needs.
  • the method for obtaining a parallel target gear reflecting user needs includes:
  • S402 Determine the parallel target gear according to the vehicle speed and its change.
  • the determination of the first gear and the second gear is taken as an example for detailed description.
  • the first gear is determined as the parallel target gear;
  • the vehicle speed is greater than the second vehicle speed At the threshold, the second gear is determined as the parallel target gear.
  • the target speed may be calculated based on the following formula:
  • the transmission ratio is configured to be associated with the parallel target gear.
  • each parallel target gear corresponds to a transmission ratio.
  • the vehicle drive control method further includes: controlling the hybrid vehicle to adjust the engine, generator, and drive in the parallel operation mode. Load distribution of the motor. Adjusting the distribution is a way to restore the working performance of the generator and/or the drive motor to a normal state, which can prevent the performance of the generator and/or the drive motor from being degraded or damaged.
  • controlling the hybrid vehicle to adjust the load distribution in the parallel operation mode includes: controlling the total work load of the hybrid vehicle to remain unchanged in the parallel operation mode, and reducing the generator And/or the working load of the driving motor.
  • the working load of the generator and/or drive motor can also be referred to as output power.
  • the load point of the generator and/or drive motor is transferred through the parallel operation mode, so that the total load of the hybrid vehicle is When the working load remains unchanged, the working load of the generator and/or the drive motor is reduced, thereby ensuring the safety of the performance of the generator and/or the drive motor, and no high temperature fault occurs.
  • the load distribution of the vehicle can be corrected to reduce the working load of the generator and/or drive motor that has overheated, so that the performance of the generator and/or drive motor can be restored.
  • Fig. 5 is a flowchart of the activation method for judging whether the hybrid vehicle satisfies the parallel operation mode in the present disclosure. As shown in Fig. 5, the activation method of the parallel operation mode includes:
  • S501 Obtain temperature and fault information of the generator and the drive motor, as well as the parallel target gear and the parallel target torque;
  • S502 Determine the operating range of the parallel speed and the operating range of the parallel torque according to the real-time temperature of the generator and the drive motor;
  • S504 Determine whether the parallel target torque is within the parallel torque working range and whether the parallel target rotational speed is within the parallel rotational speed working range;
  • S505 Analyze the fault information, and determine whether the fault information shows that the generator and/or drive motor can continue to work
  • the vehicle when the parallel operation mode is activated, the vehicle can be driven in the parallel operation mode, and the unavailability of the parallel operation mode means that the parallel operation mode cannot be switched to.
  • the present disclosure also provides a vehicle drive control system, the vehicle drive control system is equipped with a controller, and the controller is used to execute the above-mentioned vehicle drive control method.
  • the vehicle drive control system includes a processor and a memory, and the execution steps of the vehicle drive control method are stored in the memory as a program unit, and the processor executes the program unit stored in the memory to realize the corresponding Function.
  • the processor contains the kernel, and the kernel calls the corresponding program unit from the memory.
  • the kernel can be set with one or more, and the control of the vehicle drive can be realized by adjusting the kernel parameters.
  • the memory may include non-permanent memory in computer-readable media, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM), and the memory includes at least one Memory chip.
  • RAM random access memory
  • ROM read-only memory
  • flash RAM flash random access memory
  • the embodiments of the present disclosure provide a machine-readable storage medium having instructions stored on the machine-readable storage medium, and the instructions are used to make a machine execute the aforementioned vehicle drive control method.
  • the embodiment of the present disclosure provides a processor, the processor is used to run a program, wherein the vehicle driving control method is executed when the program is running.
  • the present application also provides a computer program product, which when executed on a data processing device, is suitable for executing a program that initializes the steps of the vehicle drive control method in Embodiment 1.
  • this application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • the computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
  • processors CPUs
  • input/output interfaces network interfaces
  • memory volatile and non-volatile memory
  • the memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM).
  • RAM random access memory
  • ROM read-only memory
  • flash RAM flash memory
  • Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology.
  • the information can be computer-readable instructions, data structures, program modules, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage, Magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. According to the definition in this article, computer-readable media does not include transitory media, such as modulated data signals and carrier waves.

Abstract

提供一种车辆驱动控制方法、系统，车辆驱动控制方法包括：获取混动车辆的发电机和/或驱动电机的状态(S101)；在上述状态中的温度大于安全温度阈值和/或上述状态中的故障情况示出发电机和/或驱动电机存在故障的情况下，判断混动车辆是否满足进入并联运行模式的条件(S102)；以及在混动车辆满足进入并联运行模式的条件的情况下，控制混动车辆在并联运行模式下调整发动机、发电机以及驱动电机的负载分布，以使得发电机和/或驱动电机的温度降低至安全温度阈值以下和/或不存在故障(S103)。该车辆驱动控制方法能在不影响车辆动力性的前提下降低发电机或驱动电机的温度或避免故障进一步恶化。

Description

车辆驱动控制方法、系统
相关申请的交叉引用
本公开要求在2020年04月17日提交中国专利局、申请号为202010307157.4、名称为“车辆驱动控制方法、系统”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及车辆技术领域，特别涉及一种车辆驱动控制方法、系统。
背景技术
混合动力车辆是传统内燃机车辆与纯电动车辆的结合，具有内燃机车辆和纯电动车辆两者的优势。大部分混合动力车辆具备以下三种运行模式：纯电动运行模式(发动机不工作)、串联运行模式(发动机与驱动电机串联工作)以及并联运行模式(驱动电机与发动机并联工作)，不同的车型以不同的运行模式为主。
针对以串联运行模式为主的车辆，在其行驶过程中，当发电机或驱动电机出现过温或出现故障时，其性能会出现下降，目前，只能通过限制车辆驱动系统输出的功率来降低所述发电机或驱动电机的温度或避免故障进一步恶化，这样一来，该车辆的动力性将被削弱，进而会严重影响车辆的驾驶性。
发明内容
有鉴于此，本公开旨在提出一种车辆驱动控制方法，以在不影响车辆动力性的前提下降低所述发电机或驱动电机的温度或避免故障进一步恶化。
为达到上述目的，本公开的技术方案是这样实现的：
一种车辆驱动控制方法，所述车辆驱动控制方法包括：获取混动车辆的发电机和/或驱动电机的性能相关信息；在所述性能相关信息示出所述发电机 和/或驱动电机的工作性能下降的情况下，判断所述混动车辆是否满足并联运行模式的激活条件；以及在所述混动车辆满足所述并联运行模式的激活条件的情况下，激活所述混动车辆的所述并联运行模式，以使得所述发电机和/或驱动电机的所述工作性能恢复至正常状态。
优选地，所述并联运行模式的激活条件包括：发动机的并联目标转速处于预设定的并联转速工作范围内，以及混动车辆的并联目标扭矩处于所述并联目标转速对应的并联扭矩工作范围内；或者所述故障信息示出所述发电机和/或驱动电机无法继续工作，以及发动机并联目标转速处于并联最大转速范围内且所述并联目标扭矩处于并联最大扭矩范围内；其中，所述并联最大转速范围与所述并联最大扭矩范围被配置为各自反映在并联运行模式下所述发动机正常工作时能够输出的最大转速范围和最大扭矩范围，且所述并联转速工作范围小于所述并联最大转速范围，所述并联扭矩工作范围小于所述并联最大扭矩范围。
优选地，所述车辆驱动控制方法还包括：根据所述发电机和/或驱动电机的所述温度确定所述并联转速工作范围及其对应的并联扭矩工作范围。
优选地，所述根据所述发电机和/或驱动电机的所述温度确定所述并联转速工作范围及其对应的并联扭矩工作范围包括：根据实时的所述发电机和/或驱动电机的所述温度修正所述并联转速工作效率范围及其对应的所述并联扭矩工作效率范围以得到所述并联转速工作范围及其对应的并联扭矩工作范围；其中，所述并联转速工作效率范围及其对应的所述并联扭矩工作效率范围被配置为在所述发动机处于安全温度阈值以下工作时被获得，且所述并联转速工作范围及其对应的并联扭矩工作范围被配置为随着所述发电机和/或驱动电机的温度的增加而扩大。
优选地，所述车辆驱动控制方法还包括：获取反映用户需求的并联目标档位；以及根据所述并联目标档位确定所述并联目标转速。
优选地，所述根据所述并联目标档位确定所述并联目标转速包括：基于下述公式计算所述并联目标转速：并联目标转速＝车速*传动比；其中，所述传动比被配置为与所述并联目标档位相关联。
优选地，所述激活所述混动车辆的所述并联运行模式之后，所述车辆驱动控制方法还包括：控制所述混动车辆在所述并联运行模式下调整发动机、发电机以及驱动电机的负载分布。
优选地，所述控制所述混动车辆在所述并联运行模式下调整负载分布包括：在所述并联运行模式下控制所述混动车辆的总工作负载不变，并降低所述发电机和/或驱动电机的工作负载。
本公开还提出一种车辆驱动控制系统，所述车辆驱动控制系统配置有控制器，所述控制器用于执行上述的车辆驱动控制方法。
本公开还提出一种计算机可读存储介质，其上存储有计算机程序指令，该指令用于使得机器执行上述车辆驱动控制方法。
所述车辆驱动控制系统和计算机可读存储介质与上述车辆驱动控制方法相对于现有技术所具有的优势相同，在此不再赘述。
本公开的其它特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
构成本公开的一部分的附图用来提供对本公开的进一步理解，本公开的示意性实施方式及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1为本公开实施方式所述的车辆驱动控制方法的流程图；
图2为本公开实施方式所述的发动机工作范围图示；
图3为本公开实施方式的发动机并联目标转速的获取方法的流程图；
图4为本公开获取反映用户需求的目标档位的方法流程图；以及
图5为本公开的判断所述混动车辆是否满足并联运行模式的激活方法的流程图。
具体实施方式
需要说明的是，在不冲突的情况下，本公开中的实施方式及实施方式中的特征可以相互组合。
目前，大部分的混动车辆都具备纯电动驱动模式、串联运行模式和并联运行模式，其中，纯电动驱动模式为高压电池与驱动电机配合实现车辆的驱动(发电机只有在发动机启动之后才运行，故此模式下不运行)，串联运行模式为通过发动机、发电机、驱动电机的串联配合运行实现车辆的驱动，并联运行模式为通过发动机、以及发电机和驱动电机分开运行实现车辆的驱动。不同的车辆对于各模式在运行过程中所占的比重不同，有的以串联运行模式为主，有的以并联运行模式为主。在车辆行驶过程中，如果发电机或驱动电机发生故障或过温情况，仅通过现有技术中限制车辆输出功率的方法会造成车辆的动力性被削弱。本公开将结合并联运行模式及其触发时机来在不影响车辆输出负载的情况下确保发电机或驱动电机的性能安全。本公开的方案将结合下述的附图来进行描述。
图1是一种车辆驱动控制方法的流程图。如图1所示，所述车辆驱动控制方法包括：
S101，获取混动车辆的发电机和/或驱动电机的性能相关信息。
其中，所述性能相关信息包括温度和/或故障信息。所述温度为发电机和/或驱动电机对应的硬件温度，该温度可以利用特别设计的温度传感器来采集，也可以通过车辆上已设置的温感设备来实现采集。所述故障信息用于示出所述发电机和/或驱动电机存在故障或不存在故障，并在出现故障时可以示出故障的类型即故障码，该故障码可以与当前车辆工况相结合标识出发动机 和/或驱动电机的继续工作的能力，或者能够判断出该故障是否会加剧所述发电机和/或驱动电机的状态恶化，其中，状态恶化的具体表现为所述发电机和/或驱动电机的温度继续升高或损坏。
S102，在所述性能相关信息示出所述发电机和/或驱动电机的工作性能下降的情况下，判断所述混动车辆是否满足所述并联运行模式的激活条件。
其中，所述进入并联运行模式的条件的判断前提是：所述发电机和/或驱动电机的温度超过安全温度阈值和/或所述故障信息示出所述发电机和/或驱动电机存在故障，即所述发电机和/或驱动电机出现了性能下降。其中，所述安全温度阈值被配置为示出所述发电机和/或驱动电机能够正常工作的最大温度值，即未出现性能下降的最大工作温度值。
S103，在所述混动车辆满足所述并联运行模式的激活条件的情况下，激活所述混动车辆的所述并联运行模式，以使得所述发电机和/或驱动电机的所述工作性能恢复至正常状态。
其中，所述正常状态为所述发电机和/或驱动电机的温度降低至所述安全温度阈值以下和/或不存在故障。
其中，所述混动车辆并联运行模式的激活条件包括下述两种中任意一种，利用下述条件一或条件二在保证发动机可以工作的基础上，对混动车辆的负载分布进行调节，进而保证所述发电机和/或驱动电机的温度降低至所述安全温度阈值以下和/或不存在故障即恢复至正常工作时的性能：
条件一：发动机的并联目标转速处于预设定的并联转速工作范围内，以及混动车辆的并联目标扭矩处于所述并联目标转速对应的并联扭矩工作范围内。所述并联转速工作范围用于体现所述发动机的转速范围，而并联扭矩工作范围与所述并联目标转速相关联。其中，所述并联目标转速为用户期待达到的转速，即用户的车辆性能需求。另外，所述并联目标扭矩并不是某个电机或发动机的扭矩，而是整车的目标扭矩。
条件二：所述故障信息示出所述发电机和/或驱动电机无法继续工作；以及所述并联目标转速处于并联最大转速范围内，且所述并联目标扭矩处于并联最大扭矩范围内。
图2是发动机工作范围图示，下面结合附图2详细介绍上述的条件一和条件二。
其中，图2中的横坐标指代发动机的并联转速，纵坐标指代发动机的并联扭矩。L 1指代发动机最优运行曲线(OOL，Optimal Operation Line)；L max指代并联最大工作扭矩曲线；L maxE指代并联最大效率扭矩曲线；L min指代并联最小工作扭矩曲线；L minE指代并联最小效率扭矩曲线；N max指代并联最大转速；N maxE指代并联最大效率转速；N min指代并联最小转速；N minE指代并联最小效率转速。所述并联最大转速范围[N min-N max]与所述并联最大扭矩范围[L min，L max](所述[L min，L max]指代[N min-N max]对应的L min，L max曲线中最大值和最小值)表示图中的B区域(包含中间的A区域)，所述[N min-N max]与和所述[L min，L max]被配置为各自反映在并联运行模式下所述发动机正常工作时能够输出的最大转速范围和最大扭矩范围，且所述并联转速工作范围[N 1-N 2]小于所述并联最大转速范围[N min-N max]，所述并联扭矩工作范围[L 1，L 2]小于所述并联最大扭矩范围[L min，L max]，其中所述[N 1-N 2]和[L 1，L 2]所指代的区域在图2中未示出，其指代B区域中的一个区域，其为预设定的区域。
下面通过进一步优选的方式具体描述所述并联转速工作范围和所述并联扭矩工作范围即预设定的区域的确定方式。
所述并联转速工作范围[N 1-N 2]和所述并联扭矩工作范围[L 1，L 2]根据所述获取到的所述发电机和/或驱动电机的温度来确定。具体地，所述发电机和/或驱动电机的温度越高，所述并联转速工作范围[N 1-N 2]和所述并联扭矩工作范围[L 1，L 2]越大。结合附图2来描述为，随着所述发电机和/或驱动电机的温度的升高，所述并联转速工作范围[N 1-N 2]与所述并联扭矩工作范围[L 1， L 2]逐渐向并联最大转速范围[N min-N max]和并联最大扭矩范围[L min，L max]靠近。
下面通过进一步优选地的方式具体描述所述并联转速工作范围[N 1-N 2]和所述并联扭矩工作范围[L 1，L 2]的确定方式。
如图2所示，所述根据所述发电机和/或驱动电机的所述温度确定所述并联转速工作范围[N 1-N 2]及其对应的并联扭矩工作范围[L 1，L 2]包括：根据实时的所述发电机和/或驱动电机的所述温度修正所述并联转速工作效率范围[N minE，N maxE]及其对应的所述并联扭矩工作效率范围[L minE，L maxE](对应于图2中的A区域)以得到所述并联转速工作范围[N 1-N 2]及其对应的并联扭矩工作范围[L 1，L 2]；
其中，所述[N minE，N maxE]及其对应的所述[L minE，L maxE]被配置为在所述发动机处于安全温度阈值以下工作时所获得的，其反映了发动机转速和扭矩的高效输出方式，且所述[N 1-N 2]及其对应的[L 1，L 2]被配置为随着所述发电机和/或驱动电机的温度的增加而扩大。当然，所述[N 1-N 2]及其对应的[L 1，L 2]最大只能达到所述[N min-N max]和[L min，L max]的范围即图中B区域边缘。
通过上述的方式，所述进入并联运行模式的条件会根据发电机和/或驱动电机的温度进行修正，以保证发动机能够高效率工作的基础上，完成所述车辆负载分布的调节，保证发电机和/或驱动电机的性能安全。
进一步优选地，图3是本公开的一种发动机并联目标转速的获取方法的流程图，如图3所示，所述发动机并联目标转速的获取方法包括：
S301，获取反映用户需求的并联目标档位；以及
S302，根据所述并联目标档位确定所述并联目标转速。
其中，S301步骤中所述并联目标档位由车速决定。优选地，图4是所述获取反映用户需求的并联目标档位的方法流程图，如图4所示，所述获取反映用户需求的并联目标档位的方法包括：
S401，获取车速及其变化情况；以及
S402，根据所述车速及其变化情况确定所述并联目标档位。
具体地，以一档和二档的确定为例进行详细说明。当车速变化情况示出车速由高到低且所述车速大于第一车速阈值时，将一档确定作为并联目标档位；当车速变化情况示出车速由低到高所述车速大于第二车速阈值时，将二档确定作为并联目标档位。
其中，所述S302步骤中，所述目标转速可以基于下述公式计算得到：
并联目标转速＝车速*传动比；
其中，所述传动比被配置为与所述并联目标档位相关联。具体地，每一并联目标档位对应一个传动比。
进一步优选地，在所述激活所述混动车辆的所述并联运行模式之后，所述车辆驱动控制方法还包括：控制所述混动车辆在所述并联运行模式下调整发动机、发电机以及驱动电机的负载分布。调整分布为一种使得所述发电机和/或驱动电机的所述工作性能恢复至正常状态的方式，可以避免发电机和/或驱动电机的性能下降或损坏。
进一步优选地，所述控制所述混动车辆在所述并联运行模式下调整负载分布包括：在所述并联运行模式下控制所述混动车辆的总工作负载不变，并降低所述发电机和/或驱动电机的工作负载。
其中，所述发电机和/或驱动电机的工作负载也可被称作输出功率，通过并联运行模式将所述发电机和/或驱动电机的负载点进行转移，使得所述混动车辆的总工作负载不变的情况下所述发电机和/或驱动电机的工作负载降低，从而保证所述发电机和/或驱动电机的性能安全，不会出现高温故障。
通过上述实施例，可以对车辆的负载分布进行修正，减轻已经过温的发电机和/或驱动电机的工作负载，使得所述发电机和/或驱动电机的性能得以恢复。
图5是本公开中的判断所述混动车辆是否满足并联运行模式的激活方法 的流程图，如图5所示，所述并联运行模式的激活方法包括：
S501，获取发电机和驱动电机的温度和故障信息、以及并联目标档位和并联目标扭矩；
S502，根据实时的发电机和驱动电机的温度确定并联转速工作范围和所述并联扭矩工作范围；
S503，根据并联目标档位得出发动机并联目标转速；
S504，判断所述并联目标扭矩是否处于所述并联扭矩工作范围内以及所述并联目标转速是否处于所述并联转速工作范围内；
S505，分析所述故障信息，判断所述故障信息是否示出所述发电机和/或驱动电机能够继续工作；
S506，在所述故障信息示出所述发电机和/或驱动电机不能继续工作时，判断所述并联目标转速是否处于并联最大转速范围内且所述并联目标扭矩处于并联最大扭矩范围内；
S507，在所述S504的判断结果为是或所述S506的判断结果为是的情况下，激活所述并联运行模式；
S508，在所述S504、S505或所述S506中任意一个的判断结果为否的情况下，输出“并联运行模式”不可用。
其中，在所述并联运行模式激活时可以使得车辆在并联运行模式下被驱动，所述并联运行模式不可用则表示无法切换到并联运行模式中。
此外，本公开还提供一种车辆驱动控制系统，所述车辆驱动控制系统配置有控制器，所述控制器用于执行上述的车辆驱动控制方法。
在其他实施例中，所述车辆驱动控制系统包括处理器和存储器，上述车辆驱动控制方法的执行步骤作为程序单元存储在存储器中，由处理器执行存储在存储器中的上述程序单元来实现相应的功能。
处理器中包含内核，由内核去存储器中调取相应的程序单元。内核可以 设置一个或以上，通过调整内核参数来实现车辆驱动的控制。
存储器可能包括计算机可读介质中的非永久性存储器，随机存取存储器(RAM)和/或非易失性内存等形式，如只读存储器(ROM)或闪存(flash RAM)，存储器包括至少一个存储芯片。
本公开实施例提供了一种机器可读存储介质，该机器可读存储介质上存储有指令，该指令用于使得机器执行上述的车辆驱动控制方法。
本公开实施例提供了一种处理器，所述处理器用于运行程序，其中，所述程序运行时执行所述车辆驱动控制方法。
本申请还提供了一种计算机程序产品，当在数据处理设备上执行时，适于执行初始化有实施例1中的所述车辆驱动控制方法步骤的程序。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储 器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
在一个典型的配置中，计算设备包括一个或多个处理器(CPU)、输入/输出接口、网络接口和内存。
存储器可能包括计算机可读介质中的非永久性存储器，随机存取存储器(RAM)和/或非易失性内存等形式，如只读存储器(ROM)或闪存(flash RAM)。存储器是计算机可读介质的示例。
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。按照本文中的界定，计算机可读介质不包括暂存电脑可读媒体(transitory media)，如调制的数据信号和载波。
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这 种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括要素的过程、方法、商品或者设备中还存在另外的相同要素。
以上所述仅为本公开的较佳实施方式而已，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (12)

  1. 一种车辆驱动控制方法，其特征在于，所述车辆驱动控制方法包括：
    获取混动车辆的发电机和/或驱动电机的性能相关信息；
    在所述性能相关信息示出所述发电机和/或驱动电机的工作性能下降的情况下，判断所述混动车辆是否满足并联运行模式的激活条件；以及
    在所述混动车辆满足所述并联运行模式的激活条件的情况下，激活所述混动车辆的所述并联运行模式，以使得所述发电机和/或驱动电机的所述工作性能恢复至正常状态。
  2. 根据权利要求1所述的车辆驱动控制方法，其特征在于，所述并联运行模式的激活条件包括：
    发动机的并联目标转速处于预设定的并联转速工作范围内，以及混动车辆的并联目标扭矩处于所述并联目标转速对应的并联扭矩工作范围内；或者
    所述故障信息示出所述发电机和/或驱动电机无法继续工作，以及发动机并联目标转速处于并联最大转速范围内且所述并联目标扭矩处于并联最大扭矩范围内；
    其中，所述并联最大转速范围与所述并联最大扭矩范围被配置为各自反映在并联运行模式下所述发动机正常工作时能够输出的最大转速范围和最大扭矩范围，且所述并联转速工作范围小于所述并联最大转速范围，所述并联扭矩工作范围小于所述并联最大扭矩范围。
  3. 根据权利要求2所述的车辆驱动控制方法，其特征在于，所述车辆驱动控制方法还包括：
    根据所述发电机和/或驱动电机的所述温度确定所述并联转速工作范围及其对应的并联扭矩工作范围。
  4. 根据权利要求3所述的车辆驱动控制方法，其特征在于，所述根据所述发电机和/或驱动电机的所述温度确定所述并联转速工作范围及其对应的并联扭矩工作范围包括：
    根据实时的所述发电机和/或驱动电机的所述温度修正所述并联转速工作效率范围及其对应的所述并联扭矩工作效率范围以得到所述并联转速工作范围及其对应的并联扭矩工作范围；
    其中，所述并联转速工作效率范围及其对应的所述并联扭矩工作效率范围被配置为在所述发动机处于安全温度阈值以下工作时被获得，且所述并联转速工作范围及其对应的并联扭矩工作范围被配置为随着所述发电机和/或驱动电机的温度的增加而扩大。
  5. 根据权利要求2所述的车辆驱动控制方法，其特征在于，所述车辆驱动控制方法还包括：
    获取反映用户需求的并联目标档位；以及
    根据所述并联目标档位确定所述并联目标转速。
  6. 根据权利要求5所述的车辆驱动控制方法，其特征在于，所述根据所述并联目标档位确定所述并联目标转速包括：
    基于下述公式计算所述并联目标转速：
    并联目标转速＝车速*传动比；
    其中，所述传动比被配置为与所述并联目标档位相关联。
  7. 根据权利要求1所述的车辆驱动控制方法，其特征在于，所述激活所述混动车辆的所述并联运行模式之后，所述车辆驱动控制方法还包括：
    控制所述混动车辆在所述并联运行模式下调整发动机、发电机以及驱动电机的负载分布。
  8. 根据权利要求7所述的车辆驱动控制方法，其特征在于，所述控制所述混动车辆在所述并联运行模式下调整负载分布包括：
    在所述并联运行模式下控制所述混动车辆的总工作负载不变，并降低所述发电机和/或驱动电机的工作负载。
  9. 根据权利要求1所述的方法，其特征在于，根据如下条件判断并联运行模式的激活：
    获取发电机和驱动电机的温度和故障信息、以及并联目标档位和并联目标扭矩；
    根据实时的发电机和驱动电机的温度确定并联转速工作范围和所述并联扭矩工作范围；
    根据并联目标档位得出发动机并联目标转速；
    判断所述并联目标扭矩是否处于所述并联扭矩工作范围内以及所述并联目标转速是否处于所述并联转速工作范围内，得到第一判断结果；
    分析所述故障信息，判断所述故障信息是否示出所述发电机和/或驱动电机能够继续工作，得到第二判断结果；
    在所述故障信息示出所述发电机和/或驱动电机不能继续工作时，判断所述并联目标转速是否处于并联最大转速范围内且所述并联目标扭矩处于并联最大扭矩范围内，得到第三判断结果；
    在所述第一判断结果为是或所述第三判断结果为是的情况下，激活所述并联运行模式；
    在所述第一判断结果、第二判断结果或所述第三判断结果中任意一个的 判断结果为否的情况下，输出“并联运行模式”不可用。
  10. 一种车辆驱动控制系统，其特征在于，所述车辆驱动控制系统配置有控制器，所述控制器用于执行权利要求1-9中任意一项所述的车辆驱动控制方法。
  11. 一种计算机可读存储介质，其上存储有计算机程序指令，其特征在于，该指令用于使得机器执行权利要求1-9中任意一项所述车辆驱动控制方法。
  12. 一种计算机程序产品，其特征在于，所述计算机程序产品在数据处理设备上执行时用于执行权利要求1-9中任一项所述的车辆驱动控制方法的代码部分。
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EP4063213A1 (en) 2022-09-28
CN112744211A (zh) 2021-05-04
EP4063213A4 (en) 2023-01-18

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