Power control method, device, system and vehicle

Abstract

The present application provides a power control method, device, system and vehicle. This solution is applied to a vehicle, and the power system of the vehicle includes an engine. By based on at least some of the data of the current state of charge of the vehicle's power battery, the current operating condition of the vehicle, and the operating condition of the vehicle within a future predetermined time period, the current required output power of the engine is determined. And when the current required output power of the engine is greater than the rated output power of the engine, the target output power of the engine is determined based on the current required output power of the engine, and the target output power is greater than the rated output power of the engine, so as to control the operation of the engine based on the target output power. Thus, under special operating conditions such as driving over potholes, high roadbeds, and climbing long slopes, by controlling the engine to operate with over-power, the probability that the vehicle cannot effectively get out of trouble due to insufficient power can be effectively reduced, and further the safety of vehicle operation is improved.

Description

Technical Field

[0001] This application relates to the field of vehicles, and particularly to a power control method, device, system and vehicle. Background Art

[0002] The engine is a core component in the power system of fuel vehicles and hybrid vehicles. Therefore, the power output of the engine is an important factor affecting the power performance of the vehicle.

[0003] Currently, the engine is usually configured with a rated output power to limit the power output of the engine through the rated output power. In special working conditions such as crossing potholes, high roadbeds, and climbing long slopes, it is easy to cause the vehicle to be unable to effectively get out of trouble due to insufficient power, thus unable to ensure the running safety of the vehicle. Summary of the Invention

[0004] To solve the above technical problems, this application provides a power control method, device, system and vehicle to solve the problem that in the prior art, the vehicle is prone to being unable to effectively get out of trouble due to insufficient power in special working conditions such as crossing potholes, high roadbeds, and climbing long slopes.

[0005] To achieve the above technical objectives, the embodiments of this application provide the following technical solutions:

[0006] In a first aspect, an embodiment of this specification provides a power control method applied to a vehicle, the power system of the vehicle includes an engine, and the method includes:

[0007] Based on target data, determine the current required output power of the engine, where the target data includes at least some of the current state of charge of the vehicle's power battery, the current operating condition of the vehicle, and the operating condition of the vehicle within a future predetermined time period;

[0008] If the current required output power of the engine is greater than the rated output power of the engine, determine the target output power of the engine based on the current required output power of the engine, and the target output power is greater than the rated output power of the engine;

[0009] Based on the target output power, control the operation of the engine.

[0010] In one embodiment, the power system of the vehicle further includes at least one motor;

[0011] The determining the current required output power of the engine based on target data includes:

[0012] Based on the target data, determine the current required power of the vehicle and the target working mode of the power system;

[0013] Based on the current required power of the vehicle and the target operating mode of the powertrain, determine the current required output power of the engine and the current required output power of each motor, and the current required output power of the motor is used to control the operation of the motor.

[0014] In one embodiment, the determining the current required output power of the engine and the current required output power of each motor based on the current required power of the vehicle and the target operating mode of the powertrain includes:

[0015] Based on the target operating mode of the powertrain, determine the target subsystem in the powertrain, and the target subsystem includes the engine and / or the motor;

[0016] If the current required power is greater than the total rated output power of the powertrain, then based on the current required power of the vehicle, determine the current required output power of each target subsystem at a predetermined frequency, and the total rated output power of the powertrain includes the sum of the rated output powers of the target subsystems that provide energy in each target subsystem;

[0017] Wherein, the current required output power of at least part of the target subsystems is greater than the rated output power of the corresponding target subsystems, the predetermined frequency is greater than the target frequency, and the target frequency includes the maximum control frequency of the powertrain in the case where the required power of the vehicle is less than or equal to the total rated output power of the powertrain.

[0018] In one embodiment, the determining the current required output power of each target subsystem at a predetermined frequency based on the current required power of the vehicle includes:

[0019] Based on the current required power of the vehicle, the operating state of the target subsystem, and the operating state of the thermal management system, determine the current required output power of each target subsystem at the predetermined frequency until each target subsystem no longer meets the over-power operation condition;

[0020] Wherein, the thermal management system is used to perform thermal management on the powertrain.

[0021] In one embodiment, the operating state of the target subsystem includes the parameter values of each safety monitoring parameter of the target subsystem, and the operating state of the thermal management system includes the parameter values of each operating parameter of the thermal management system;

[0022] The method for determining whether the target subsystem meets the over-power operation condition includes:

[0023] If the parameter value of at least one safety monitoring parameter of the target subsystem exceeds the corresponding predetermined range, and / or, the parameter value of at least one operating parameter of the thermal management system exceeds the corresponding predetermined range, it is determined that the target subsystem does not meet the super-power operation condition;

[0024] If the parameter values of all safety monitoring parameters of the target subsystem do not exceed the corresponding predetermined ranges, and the parameter values of all operating parameters of the thermal management system do not exceed the corresponding predetermined ranges, it is determined that the target subsystem meets the super-power operation condition.

[0025] In one implementation, the determining the target output power of the engine based on the current required output power of the engine includes:

[0026] Determining the target output power of the engine based on the current required output power of the engine and the output power limits of the engine at various predetermined operation durations;

[0027] Wherein, the output power limits of the engine at various predetermined operation durations are all greater than the rated output power of the engine, and the output power limits of the engine at various predetermined operation durations match the hardware of the engine.

[0028] In one implementation, the method for determining the output power limits of the engine at various predetermined operation durations includes:

[0029] Determining the output power limits of the engine at various predetermined operation durations based on the required continuous operation duration of the engine under the target working condition and the required output power during the required continuous operation duration;

[0030] Or, determining the output power limits of the engine at various predetermined operation durations respectively based on the instantaneous output power of the motor in the power system at various predetermined operation durations.

[0031] In a second aspect, an embodiment of this specification provides a power control device applied to a vehicle, the power system of the vehicle includes an engine, and the device includes:

[0032] A first processing module, configured to determine the current required output power of the engine based on target data, where the target data includes at least partial data of the current state of charge of the power battery of the vehicle, the current operating condition of the vehicle, and the operating condition of the vehicle within a future predetermined duration;

[0033] A second processing module, configured to determine a target output power of the engine based on the current required output power of the engine if the current required output power of the engine is greater than the rated output power of the engine, where the target output power is greater than the rated output power of the engine;

[0034] A third processing module, configured to control the operation of the engine based on the target output power.

[0035] In a third aspect, an embodiment of the present specification provides a power control system, including a monitoring system and a controller. The monitoring system is configured to monitor at least partial data of the current state of charge of the power battery of the vehicle, the current operating condition of the vehicle, and the operating condition of the vehicle within a future predetermined time period;

[0036] The controller includes at least one processor and at least one memory. A computer program is stored in the memory. When the computer program is executed by the processor, the power control method described in any one of the above is implemented.

[0037] In a fourth aspect, an embodiment of the present specification provides a vehicle, where the vehicle includes the power control system described above. The power control system is configured to control the operation of the power system of the vehicle, and the power system includes an engine.

[0038] In a fifth aspect, an embodiment of the present specification provides a computer-readable storage medium, on which a computer program is stored. When the computer program is run by a processor, the power control method described in any one of the above is implemented.

[0039] In a sixth aspect, an embodiment of the present specification provides a computer program product or a computer program. The computer program product includes a computer program, and the computer program is stored in a computer-readable storage medium; a processor of the computer device reads the computer program from the computer-readable storage medium, and when the processor executes the computer program, the power control method described in any one of the above is implemented.

[0040] As can be seen from the above technical solutions, the embodiments of the present application provide a power control method, device, system and vehicle. This solution is applied to a vehicle, and the vehicle's power system includes an engine. By using at least some of the data of the current state of charge of the vehicle's power battery, the current operating condition of the vehicle, and the operating condition of the vehicle within a future predetermined period, the current required output power of the engine is determined. When the current required output power of the engine is greater than the rated output power of the engine, the target output power of the engine is determined based on the current required output power of the engine. The target output power is greater than the rated output power of the engine, and the engine operation is controlled based on the target output power. Thus, in special operating conditions such as crossing potholes, high roadbeds, and climbing long slopes, by controlling the engine to operate at over-power, the probability that the vehicle cannot effectively escape due to insufficient power can be effectively reduced, thereby improving the safety of vehicle operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0042] Figure 1 It is a schematic flow chart of a power control method provided for the embodiments of this specification.

[0043] Figure 2 It is a schematic flow chart of another power control method provided for the embodiments of this specification.

[0044] Figure 3 It is a schematic structural diagram of a power control device provided for the embodiments of this specification.

[0045] Figure 4 It is a schematic structural diagram of a power control system provided for the embodiments of this specification. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification should have the ordinary meanings understood by those of ordinary skill in the art to which this specification belongs. The "first", "second" and similar terms used in the embodiments of this specification do not represent any order, quantity or importance, but are only used to avoid confusion of the components.

[0047] Unless otherwise required by the context, throughout the specification, "a plurality of" means "at least two", and "comprising" is construed in an open, inclusive sense, that is, "including, but not limited to". In the description of the specification, terms such as "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples" are intended to indicate that specific features, structures, materials, or characteristics related to the embodiment or example are included in at least one embodiment or example of the present specification. The schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0048] The technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present specification. Obviously, the described embodiments are only a part of the embodiments of the present specification, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present specification without creative efforts shall fall within the scope of protection of the present specification.

[0049] Overview

[0050] As described in the background art, the engine is a core component in the power system of fuel vehicles and hybrid vehicles. Therefore, the power output of the engine is an important factor affecting the power performance of the vehicle.

[0051] Currently, the engine is usually configured with a rated output power to limit the power output of the engine through the rated output power, that is, the maximum output power of the engine does not exceed its rated output power. However, in special working conditions such as crossing potholes, high roadbeds, and climbing long slopes, it is easy for the vehicle to be unable to effectively get out of trouble due to insufficient power, thus unable to ensure the running safety of the vehicle.

[0052] To solve the problem in the traditional method that in special working conditions such as crossing potholes, high roadbeds, and climbing long slopes, it is easy for the vehicle to be unable to effectively get out of trouble due to insufficient power, in the technical solution of the present application, a power control scheme is provided. This scheme is applied to a vehicle, and the power system of the vehicle includes an engine. By based on at least some of the data of the current state of charge of the vehicle's power battery, the current operating condition of the vehicle, and the operating condition of the vehicle within a future predetermined time period, the current required output power of the engine is determined. And when the current required output power of the engine is greater than the rated output power of the engine, the target output power of the engine is determined based on the current required output power of the engine, and the target output power is greater than the rated output power of the engine. To control the operation of the engine based on the target output power, thereby in special working conditions such as crossing potholes, high roadbeds, and climbing long slopes, by controlling the engine to operate at an overrated power, the probability that the vehicle is unable to effectively get out of trouble due to insufficient power can be effectively reduced, and thus the running safety of the vehicle is improved.

[0053] Based on the above inventive concept, the power control method provided in the embodiments of this specification will be described exemplarily below.

[0054] Exemplary method

[0055] An embodiment of this specification provides a power control method applied to a vehicle. The vehicle's power system includes an engine. As Figure 1 shown, the method includes:

[0056] S101. Based on target data, determine the current required output power of the engine. The target data includes at least some of the current state of charge of the vehicle's power battery, the current operating condition of the vehicle, and the operating condition of the vehicle within a future predetermined time period.

[0057] Specifically, the vehicle's power system may include an engine, and may also include an engine and a motor at the same time. That is, the vehicle may be a fuel vehicle or a hybrid vehicle. For a fuel vehicle, the engine control unit may execute the power control method of this application. For a hybrid vehicle, the vehicle's power control unit may execute the power control method of this application.

[0058] Among them, the target data may include the current operating condition of the vehicle. In implementation, the current operating condition of the vehicle may be determined based on the vehicle's current driving parameters (such as throttle parameters, braking parameters, gear parameters, etc.) and / or the current road conditions. For example, the current operating condition may be a long uphill condition, a high roadbed condition, a pothole crossing condition, etc.

[0059] The target data may also include the operating condition of the vehicle within a future predetermined time period. In implementation, the operating condition of the vehicle within a future predetermined time period may be determined based on the vehicle's current driving parameters (such as throttle parameters, braking parameters, gear parameters, etc.) and / or the road conditions in front of the vehicle.

[0060] The current road conditions of the vehicle and the road conditions in front of the vehicle may be detected based on a monitoring system. For example, the monitoring system may include an image acquisition device, a radar, etc.

[0061] In addition, when the vehicle is a hybrid vehicle, the target data may also include the current state of charge of the vehicle's power battery. In implementation, the power control unit may receive the state of charge of the power battery sent by the vehicle's battery management system in real time.

[0062] The current required output power of the engine is the power that the engine needs to output at the current moment to meet the vehicle's power demand.

[0063] In implementation, based on target data, the current required output power of the engine can be determined. The target data may include at least some of the current state of charge of the power battery, the current operating condition of the vehicle, and the operating condition of the vehicle within a future predetermined time period. For example, when the vehicle is a fuel vehicle, the current required output power of the engine can be determined based on the current operating condition of the vehicle and / or the operating condition of the vehicle within a future predetermined time period. When the vehicle is a hybrid vehicle, the current required output power of the engine can be determined based on the current state of charge of the power battery, the current operating condition of the vehicle, and / or the operating condition of the vehicle within a future predetermined time period.

[0064] Among them, the current required power of the vehicle can be determined based on the target data, and the current required output power of the engine can be determined based on the current required power of the vehicle. For example, when the vehicle is a fuel vehicle, the current required power of the vehicle can be directly used as the current required output power of the engine. When the vehicle is a hybrid vehicle, the power can be distributed between the engine and the motor based on the current required power of the vehicle. For example, the target operating mode of the powertrain can be determined based on the target data, and the power can be distributed between the engine and the motor according to the target operating mode to obtain the current required power of the engine.

[0065] S102. If the current required output power of the engine is greater than the rated output power of the engine, determine the target output power of the engine based on the current required output power of the engine, and the target output power is greater than the rated output power of the engine.

[0066] Specifically, if the current required output power of the engine is greater than the rated output power of the engine, the target output power of the engine can be determined based on the current required output power of the engine. The target output power of the engine is greater than the rated output power of the engine, and the target output power of the engine can be used to control the operation of the engine. That is, when the current required output power of the engine is greater than the rated output power of the engine, the engine can be controlled to operate at an overrated power, so that the engine can output a relatively large power in a short time to meet the power requirements of the vehicle under special conditions such as crossing a pothole, a high roadbed, or climbing a long slope. Furthermore, the probability that the vehicle cannot effectively get out of trouble due to insufficient power under special conditions such as crossing a pothole, a high roadbed, or climbing a long slope can be effectively reduced.

[0067] It can be understood that during the process of the engine operating at an overrated power, the safety parameters of the engine and the overrated power operation duration can be monitored in real time, and when the engine does not meet the overrated power operation conditions, the output power of the engine can be reduced to meet the operating safety of the engine.

[0068] In addition, if the current required output power of the engine is less than or equal to the rated output power of the engine, the engine can be directly controlled to output power based on the current required output power of the engine to meet the power demand of the vehicle.

[0069] S103. Control the engine to operate based on the target output power.

[0070] Specifically, during the process of controlling the engine to operate with over-power based on the target output power, the intake air pressure, fuel pressure, etc. of the engine can be controlled to increase, the ignition advance angle of the engine can also be controlled to increase, and the EGR (Exhaust Gas Recirculation) rate of the engine can be controlled to decrease. Specifically, it can be set according to actual requirements.

[0071] Thus, under special working conditions such as crossing potholes, high roadbeds, and climbing long slopes, by controlling the engine to operate with over-power, the probability that the vehicle cannot effectively get out of trouble due to insufficient power can be effectively reduced, thereby improving the safety of vehicle operation.

[0072] In a feasible implementation, the power system of the vehicle further includes at least one motor;

[0073] The determining the current required output power of the engine based on the target data includes:

[0074] Based on the target data, determine the current required power of the vehicle and the target working mode of the power system;

[0075] Based on the current required power of the vehicle and the target working mode of the power system, determine the current required output power of the engine and the current required output power of each motor, and the current required output power of the motor is used to control the operation of the motor.

[0076] Specifically, the power system of the vehicle can further include at least one motor. For example, a drive motor, a generator, etc. That is, the vehicle is a hybrid vehicle.

[0077] If the vehicle is a hybrid vehicle, during the process of determining the current required output power of the engine based on the target data, the current required power of the vehicle and the target working mode of the power system can be determined based on the target data.

[0078] The working modes of the power system can include a pure electric mode (that is, the vehicle is only driven by the motor and the engine does not work), a hybrid mode (that is, the engine and the motor jointly drive the vehicle), an engine drive mode (that is, the vehicle is only driven by the engine and the motor does not work), a charging mode (that is, the energy provided by the engine is used to drive the vehicle and to provide power to the motor to charge the power battery) and so on.

[0079] In implementation, based on the target data and the predetermined corresponding relationship, the target operating mode of the power system can be determined. The predetermined corresponding relationship can include the corresponding relationship between the current operating condition of the vehicle, the operating condition of the vehicle within a predetermined future time period, the current state of charge of the power battery, and the target operating mode of the power system. For example, when the current operating condition of the vehicle is a special condition such as a long uphill condition, a pothole crossing condition, or a high roadbed condition, if the current state of charge of the power battery meets the predetermined state of charge, the target operating mode of the power system can be a hybrid mode. If the current state of charge of the power battery does not meet the predetermined state of charge, the target operating mode of the power system can be an engine drive mode. The predetermined state of charge can be the state of charge of the power battery when the remaining power of the power battery can supply the normal operation of the motor. When the operating condition of the vehicle within a predetermined future time period is a long uphill condition, if the current state of charge of the power battery indicates that the current remaining power of the power battery is less than the predetermined power, the target operating mode of the power system can be a charging mode. If the current state of charge of the power battery indicates that the current remaining power of the power battery is greater than or equal to the predetermined power, the target operating mode of the power system can be an engine drive mode.

[0080] Among them, the current demand power of the vehicle can include the current driving demand power of the vehicle and can also include the current charging demand power of the vehicle. For example, when the target operating mode of the power system is a charging mode, the current demand power of the vehicle can be the sum of the current driving demand power of the vehicle and the current charging demand power of the vehicle. When the target operating mode of the power system is a pure electric mode, a hybrid mode, or an engine drive mode, the current demand power of the vehicle can be the current driving demand power of the vehicle.

[0081] In implementation, based on the current demand power of the vehicle and the target operating mode of the power system, the current demand output power of the engine and the current demand output power of each motor can be determined, so as to be able to ensure the effective operation of the power system while maximizing the satisfaction of the vehicle's power demand, and further be able to effectively reduce the probability that the vehicle cannot effectively get out of trouble due to insufficient power under special conditions such as pothole crossing, high roadbed, and long uphill climbing.

[0082] It can be understood that the current demand output power of the motor can be used to control the operation of the motor. For example, when the current demand output power of the motor is less than or equal to the rated output power of the motor, the motor can be controlled to operate according to the current demand output power of the motor. When the current demand output power of the motor is greater than the rated output power of the motor, the motor can be controlled to operate based on the current demand output power of the motor and the instantaneous power of the motor, and the instantaneous power of the motor is greater than the rated output power of the motor.

[0083] In a feasible implementation manner, determining the current required output power of the engine and the current required output power of each motor based on the current required power of the vehicle and the target operating mode of the powertrain includes:

[0084] Based on the target operating mode of the powertrain, determining the target subsystem in the powertrain, where the target subsystem includes the engine and / or the motor;

[0085] If the current required power is greater than the total rated output power of the powertrain, then based on the current required power of the vehicle, determining the current required output power of each target subsystem at a predetermined frequency, where the total rated output power of the powertrain includes the sum of the rated output powers of the target subsystems that are used to provide energy in each of the target subsystems;

[0086] Wherein, the current required output power of at least part of the target subsystems is greater than the rated output power of the corresponding target subsystems, the predetermined frequency is greater than the target frequency, and the target frequency includes the maximum control frequency of the powertrain in the case where the required power of the vehicle is less than or equal to the total rated output power of the powertrain.

[0087] Specifically, the target subsystem can be the subsystem that needs to operate in the powertrain, and can include the engine and / or the motor. Among them, the subsystem that needs to operate in the powertrain can be determined as the target subsystem based on the target operating mode of the powertrain. For example, when the target operating mode is the charging mode, the target subsystem can include the engine and the generator; when the target operating mode is the pure electric mode, the target subsystem can include the drive motor; when the target operating mode is the hybrid mode, the target subsystem can include the drive motor and the engine; when the target operating mode is the engine drive mode, the target subsystem can include the engine.

[0088] The total equivalent output power of the powertrain can include the sum of the rated output powers of the target subsystems that are used to provide energy in each of the target subsystems. For example, the target subsystems that are used to provide energy can include the engine and the drive motor, while the generator is used for energy conversion and transmission.

[0089] If the current required power of the vehicle is greater than the total rated output power of the power system, it can be characterized that the current operating condition of the vehicle is a special condition such as driving over a pothole, a high roadbed, climbing a long slope, etc., or, the operating condition of the vehicle within a future predetermined time period is a special condition such as driving over a pothole, a high roadbed, climbing a long slope, etc. and the power battery energy is insufficient. At this time, the power system can be controlled to operate with over-power, that is, the current required output power of at least some of the target subsystems is greater than the rated output power of the corresponding target subsystems. It can be understood that for the subsystems other than the target subsystems in the power system, their current required output power can be 0.

[0090] In implementation, the current required output power of each target subsystem can be determined according to a predetermined frequency, and the predetermined frequency is greater than the target frequency. Wherein, the target frequency can include the maximum control frequency in the process of controlling the power system when the required power of the vehicle is less than or equal to the total rated output power of the power system. Thus, when the required power of the vehicle is greater than the total rated output power of the power system, overclocking control of the power system can be realized. By performing overclocking control on the power system, the current required output power of each target subsystem can be updated in a timely manner according to the operating state of the power system, so that while ensuring the effective operation of the power system, short-term over-power operation of the power system can be realized, and further reduces the probability that the vehicle cannot effectively get out of trouble due to insufficient power under special conditions such as driving over a pothole, a high roadbed, climbing a long slope, etc.

[0091] In a feasible implementation manner, determining the current required output power of each of the target subsystems according to a predetermined frequency based on the current required power of the vehicle includes:

[0092] Based on the current required power of the vehicle, the operating state of the target subsystem, and the operating state of the thermal management system, determine the current required output power of each of the target subsystems according to the predetermined frequency until each of the target subsystems no longer meets the over-power operation condition;

[0093] Wherein, the thermal management system is used to perform thermal management on the power system.

[0094] Specifically, for any target subsystem, the operating state of the target subsystem can be used to characterize the operating performance and health state of the target subsystem.

[0095] The thermal management system can be used to perform thermal management on each subsystem in the power system to ensure that each subsystem operates within a predetermined temperature range and avoid overheating or overcooling. The operating state of the thermal management system can include the working states of various components (such as fans, water pumps, oil pumps, etc.) in the thermal management system.

[0096] In the process of determining the current required output power of each target subsystem each time, the current required power of the vehicle, the operating states of each target subsystem, and the operating state of the thermal management system can be comprehensively considered, and power distribution can be performed on each target subsystem according to the current required power of the vehicle, the operating states of each target subsystem, and the operating state of the thermal management system, so as to obtain the current required output power of each target subsystem. It can be understood that in the process of performing power distribution on each target subsystem, the actual output power of each target subsystem can also be considered.

[0097] In implementation, in the process of performing power distribution on each target subsystem according to the current required power of the vehicle, the operating states of each target subsystem, and the operating state of the thermal management system, it is possible to determine whether each target subsystem meets the over-power operation condition based on the operating states of each target subsystem and the operating state of the thermal management system. For a target subsystem that meets the over-power operation condition, it can be determined that the current required output power of this target subsystem is greater than the rated output power of this target subsystem. For a target subsystem that does not meet the over-power operation condition, it can be determined that the current required output power of this target subsystem is less than or equal to the rated output power of this target subsystem, so that short-term over-power output of the power system can be achieved while ensuring the safe and effective operation of each target subsystem.

[0098] Optionally, when multiple target subsystems all meet the over-power operation condition, power distribution can be performed on each target subsystem based on the over-power operation priority of each target subsystem that meets the over-power operation condition. For example, when both the engine and the drive motor meet the over-power operation condition, the over-power operation priority of the engine and the drive motor can be determined based on the current state of charge of the power battery. If the current state of charge of the power battery meets the predetermined state of charge, the over-power operation priority of the drive motor is higher than that of the engine, that is, the drive motor gives priority to over-power operation. If the vehicle's current required power still cannot be met when the drive motor operates in over-power mode, then both the engine and the drive motor operate in over-power mode. In addition, when multiple target subsystems all meet the over-power operation condition, power distribution can also be performed on each target subsystem based on the types of each target subsystem that meet the over-power operation condition. For example, when both the engine and the generator meet the over-power operation condition, the current required output power of the generator can be determined based on the current charging required power in the vehicle's current required power, and the current required output power of the engine can be determined based on the current required output power of the generator and the current driving required power in the vehicle's current required power.

[0099] Among them, when none of the target subsystems meets the over-power operation condition, the rated output power of each target subsystem can be used as the current required output power of each target subsystem. At the same time, the control of the power system according to a predetermined frequency can be stopped. It can be understood that the power system can also be controlled to operate with over power again after a predetermined time interval.

[0100] In a feasible implementation manner, the operating state of the target subsystem includes the parameter values of each safety monitoring parameter of the target subsystem, and the operating state of the thermal management system includes the parameter values of each working parameter of the thermal management system.

[0101] The method for determining whether the target subsystem meets the over-power operation condition includes:

[0102] If the parameter value of at least one safety monitoring parameter of the target subsystem exceeds the corresponding predetermined range, and / or the parameter value of at least one working parameter of the thermal management system exceeds the corresponding predetermined range, it is determined that the target subsystem does not meet the over-power operation condition.

[0103] If the parameter values of all safety monitoring parameters of the target subsystem do not exceed the corresponding predetermined ranges, and the parameter values of all working parameters of the thermal management system do not exceed the corresponding predetermined ranges, it is determined that the target subsystem meets the over-power operation condition.

[0104] Specifically, for any target subsystem, the safety monitoring parameters of the target subsystem can be used to characterize the operating performance and health status of the target subsystem. For example, the safety monitoring parameters of the engine can include knock parameters, exhaust temperature, coolant temperature, oil temperature, etc., and the safety monitoring parameters of the drive motor and generator can include coolant temperature, oil temperature, current, voltage, etc.

[0105] The working parameters of the thermal management system can include the working parameters of each component in the thermal management system. For example, they can include fan speed, water pump speed, oil pump speed, etc.

[0106] In implementation, for any target subsystem, during the process of determining whether the target subsystem meets the condition of over-power operation, the first comparison result between the parameter values of each safety monitoring parameter of the target subsystem and the predetermined range of the corresponding safety monitoring parameter can be obtained, and the second comparison result between the parameter values of each operating parameter of the thermal management system and the predetermined range of the corresponding operating parameter can be obtained. And based on the first comparison result and the second comparison result, it is determined whether the target subsystem meets the condition of over-power operation. For example, if the parameter values of each safety monitoring parameter of the target subsystem do not exceed the predetermined range of the corresponding safety monitoring parameter, and the parameter values of each operating parameter of the thermal management system do not exceed the predetermined range of the corresponding operating parameter, it is determined that the target subsystem meets the condition of over-power operation. If the parameter value of at least one safety monitoring parameter of the target subsystem exceeds the predetermined range of the corresponding safety monitoring parameter, and / or the parameter value of at least one operating parameter of the thermal management system exceeds the predetermined range of the corresponding operating parameter, it is determined that the target subsystem does not meet the condition of over-power operation.

[0107] Thus, through the method of the embodiment of the present application, the operation performance and safety of the power system can be effectively guaranteed during the over-power operation of the power system.

[0108] In a feasible implementation manner, the determining the target output power of the engine based on the current required output power of the engine includes:

[0109] Determining the target output power of the engine based on the current required output power of the engine and the output power limit of the engine at each predetermined operation duration;

[0110] Wherein, the output power limit of the engine at each predetermined operation duration is greater than the rated output power of the engine, and the output power limit of the engine at each predetermined operation duration matches the hardware of the engine.

[0111] Specifically, the output power limit of the engine at at least one predetermined operation duration can be pre-configured. For any predetermined operation duration, the predetermined operation duration can be less than a predetermined value. For example, the predetermined operation duration can be 5s, 10s, etc. At the same time, the output power limit at this predetermined operation duration can be greater than the rated output power of the engine. It can be understood that the output power limit can be negatively correlated with the predetermined operation duration, that is, the longer the predetermined operation duration, the smaller the output power limit at this predetermined operation duration, and the shorter the predetermined operation duration, the greater the output power limit at this predetermined operation duration.

[0112] In implementation, when the current required output power of the engine is greater than the rated output power of the engine, the target output power of the engine can be determined based on the current required output power of the engine and the output power limits of the engine at various predetermined operating durations. For example, the current required output power of the engine can be compared with the maximum output power limit among the respective output power limits corresponding to the engine. If the current required output power of the engine is less than the maximum output power limit, the current required output power of the engine is determined as the target output power of the engine. If the current required output power of the engine is greater than or equal to the maximum output power limit, the maximum output power limit is determined as the target output power of the engine. Additionally, the current required output power of the engine can be compared with the output power limit corresponding to the target operating duration among various predetermined operating durations. If the current required output power of the engine is less than the output power limit corresponding to the target operating duration, the current required output power of the engine is determined as the target output power of the engine. If the current required output power of the engine is greater than or equal to the output power limit corresponding to the target operating duration, the output power limit corresponding to the target operating duration is determined as the target output power of the engine. The target operating duration is greater than or equal to the estimated required duration corresponding to the current required power of the vehicle, so that short-time over-power operation of the engine can be achieved while ensuring the operating safety of the engine.

[0113] Among them, the output power limits of the engine at various predetermined operating durations are matched with the hardware of the engine. For example, the output power limits of the engine at at least one predetermined operating duration can be determined according to the power output requirements of the engine under different working conditions. Additionally, the output power limits of the engine at at least one predetermined operating duration can also be determined according to the configuration data of the motor (such as the instantaneous power of the motor). Thus, the hardware of the engine can be configured according to the output power limits of the engine at various predetermined operating durations, so as to ensure the safe and effective short-time high-power operation of the engine.

[0114] In a feasible implementation manner, the method for determining the output power limits of the engine at various predetermined operating durations includes:

[0115] Based on the required continuous operating duration of the engine under the target working condition and the required output power during the required continuous operating duration, determine the output power limits of the engine at various predetermined operating durations;

[0116] Or, based on the instantaneous output powers of the motor in the power system at various predetermined operating durations, respectively determine the output power limits of the engine at various predetermined operating durations.

[0117] Specifically, the target operating condition can be the operating condition with the highest power demand among various predetermined operating conditions of the vehicle, that is, the most stringent operating condition. In implementation, the duration of continuous operation required by the engine under the target operating condition can be used as a predetermined operating duration, and the required output power of the engine during this duration of continuous operation can be used as the output power limit of the engine during this predetermined operating duration. At the same time, based on the required output power of the engine during this duration of continuous operation, the hardware configuration of the engine can be carried out, without using the output power limit of the engine during this predetermined operating duration as the rated output power of the engine. Thus, it is possible to meet the high-power demand for the engine under special operating conditions while reducing the hardware cost of the engine.

[0118] It can be understood that at least one other predetermined operating duration and the output power limit of the engine during this other predetermined operating duration can also be determined based on the required output power of the engine during this duration of continuous operation. This other predetermined operating duration is greater than this duration of continuous operation, and the output power limit of the engine during this other predetermined operating duration is less than the required output power of the engine during this duration of continuous operation.

[0119] In implementation, when the power system of the vehicle does not include an electric motor, that is, when the vehicle is a fuel vehicle, the output power limits of the engine during various predetermined operating durations can be determined based on the duration of continuous operation required by the engine under the target operating condition and the required output power of the engine during this duration of continuous operation.

[0120] In addition, the output power limits of the engine during various predetermined operating durations can be determined respectively based on the instantaneous output power of the electric motor during various predetermined operating durations. For example, the predetermined operating duration corresponding to the engine is the same as the various predetermined operating durations corresponding to the electric motor, and for any predetermined operating duration, the output power limit of the engine during this predetermined operating duration can be the same as the instantaneous output power of the electric motor during this predetermined operating duration. At the same time, based on the output power limits of the engine during various predetermined operating durations, the hardware configuration of the engine can be carried out.

[0121] In implementation, when the power system of the vehicle includes an electric motor, that is, when the vehicle is a hybrid vehicle, the output power limits of the engine during various predetermined operating durations can be determined respectively based on the instantaneous output power of the electric motor during various predetermined operating durations.

[0122] Currently, for hybrid vehicles, in order to ensure the maximum power output of the power system, it is usually set that the rated output power of the engine meets the instantaneous output power of the motor. However, a larger rated output power requires a higher engine hardware configuration, resulting in a significant increase in the hardware cost of the engine. The method of the embodiment of the present application can effectively reduce the hardware cost of the engine on the premise of ensuring the maximum power output of the power system by configuring the output power limit of the engine at each predetermined operation duration to match the instantaneous output power of the motor at each predetermined operation duration.

[0123] Taking a hybrid vehicle as an example below, the specific implementation process of the power control method of the present application will be illustrated by examples. As Figure 2 shown, the power control method of the present application includes:

[0124] S201. Determine the current demand power of the vehicle and the target working mode of the power system based on the current state of charge of the power battery, the current operating condition of the vehicle, and the operating condition of the vehicle within a future predetermined duration.

[0125] S202. Determine the target subsystem in the power system based on the target working mode of the power system, and determine whether the current demand power of the vehicle is greater than the total rated output power of the power system. If so, execute step S203; if not, execute step S206. The total rated output power of the power system includes the sum of the rated output powers of the target subsystems that provide energy in each target subsystem.

[0126] S203. Determine whether each target subsystem does not meet the over-power operation condition based on the operating state of each target subsystem and the operating state of the thermal management system. If so, execute step S205; if not, execute step S204.

[0127] S204. Determine the current demand output power of each target subsystem at a predetermined frequency based on the current demand power of the vehicle, the operating state of each target subsystem, the operating state of the thermal management system, and the actual output power of each target subsystem, and execute step S207, where the current demand output power of at least some target subsystems is greater than the rated output power of the corresponding target subsystems. The predetermined frequency is greater than the target frequency, and the target frequency includes the maximum control frequency of the power system when the demand power of the vehicle is less than or equal to the total rated output power of the power system.

[0128] S205. Determine the current demand output power of each target subsystem based on the rated output power of each target subsystem, and execute step S207.

[0129] S206. Determine the current demand output power of each target subsystem based on a predetermined strategy, and execute step S207.

[0130] S207. Determine the target output power of each target subsystem based on the current required output power of each target subsystem, and control the operation of each target subsystem respectively based on the target output power of each target subsystem.

[0131] Exemplary device

[0132] In an exemplary embodiment of the present specification, a power control device is further provided, which is applied to a vehicle. The power system of the vehicle includes an engine, as Figure 3 shown. The device includes:

[0133] A first processing module 301, configured to determine the current required output power of the engine based on target data, where the target data includes at least partial data of the current state of charge of the vehicle's power battery, the current operating condition of the vehicle, and the operating condition of the vehicle within a future predetermined time period;

[0134] A second processing module 302, configured to, if the current required output power of the engine is greater than the rated output power of the engine, determine the target output power of the engine based on the current required output power of the engine, where the target output power is greater than the rated output power of the engine;

[0135] A third processing module 303, configured to control the operation of the engine based on the target output power.

[0136] In a feasible implementation manner, the power system of the vehicle further includes at least one motor; specifically, the first processing module 301 is configured to:

[0137] Determine the current required power of the vehicle and the target operating mode of the power system based on the target data;

[0138] Determine the current required output power of the engine and the current required output power of each motor based on the current required power of the vehicle and the target operating mode of the power system, where the current required output power of the motor is used to control the operation of the motor.

[0139] In a feasible implementation manner, specifically, the first processing module 301 is configured to:

[0140] Determine the target subsystem in the power system based on the target operating mode of the power system, where the target subsystem includes the engine and / or the motor;

[0141] If the current required power is greater than the total rated output power of the power system, then based on the current required power of the vehicle, determine the current required output power of each of the target subsystems at a predetermined frequency. The total rated output power of the power system includes the sum of the rated output powers of the target subsystems that provide energy among each of the target subsystems;

[0142] Among them, the current required output power of at least some of the target subsystems is greater than the rated output power of the corresponding target subsystems. The predetermined frequency is greater than the target frequency, and the target frequency includes the maximum control frequency of the power system in the case where the required power of the vehicle is less than or equal to the total rated output power of the power system.

[0143] In a feasible implementation manner, the first processing module 301 is specifically configured to:

[0144] Based on the current required power of the vehicle, the operating states of the target subsystems, and the operating state of the thermal management system, determine the current required output power of each of the target subsystems at the predetermined frequency until each of the target subsystems no longer satisfies the over-power operation condition;

[0145] Among them, the thermal management system is used to perform thermal management on the power system.

[0146] In a feasible implementation manner, the operating state of the target subsystem includes the parameter values of each safety monitoring parameter of the target subsystem, and the operating state of the thermal management system includes the parameter values of each working parameter of the thermal management system; the first processing module 301 is specifically configured to:

[0147] If the parameter value of at least one safety monitoring parameter of the target subsystem exceeds the corresponding predetermined range, and / or the parameter value of at least one working parameter of the thermal management system exceeds the corresponding predetermined range, then it is determined that the target subsystem does not satisfy the over-power operation condition;

[0148] If the parameter values of each safety monitoring parameter of the target subsystem do not exceed the corresponding predetermined range, and the parameter values of each working parameter of the thermal management system do not exceed the corresponding predetermined range, then it is determined that the target subsystem satisfies the over-power operation condition.

[0149] In a feasible implementation manner, the second processing module 302 is specifically configured to:

[0150] Based on the current required output power of the engine and the output power limit values of the engine at each predetermined operation duration, determine the target output power of the engine;

[0151] Among them, the output power limit values of the engine at various predetermined operating durations are all greater than the rated output power of the engine, and the output power limit values of the engine at various predetermined operating durations match the hardware of the engine.

[0152] In a feasible embodiment, the second processing module 302 is further configured to:

[0153] Based on the required continuous operating duration of the engine under the target operating condition and the required output power at the required continuous operating duration, determine the output power limit values of the engine at various predetermined operating durations;

[0154] Or, based on the instantaneous output power of the motor in the power system at various predetermined operating durations, respectively determine the output power limit values of the engine at various predetermined operating durations.

[0155] The power control device provided in this embodiment belongs to the same inventive concept as the power control method provided in the above embodiments of the present application, can execute the power control method provided in any of the above embodiments of the present application, and has the corresponding functional modules and beneficial effects for executing the power control method. For the technical details not described in detail in this embodiment, reference may be made to the specific processing content of the power control method provided in the above embodiments of the present application, which will not be elaborated here.

[0156] Exemplary device

[0157] In an exemplary embodiment of this specification, a power control system is further provided, as Figure 4 shown, including a monitoring system 401 and a controller 402. The monitoring system 401 is configured to monitor at least some of the data of the current state of charge of the power battery of the vehicle, the current operating condition of the vehicle, and the operating condition of the vehicle within a predetermined future duration.

[0158] The controller 402 includes at least one processor and at least one memory. A computer program is stored in the memory, and when the computer program is executed by the processor, it implements the power control method as described in any of the above embodiments.

[0159] Exemplary vehicle

[0160] In an exemplary embodiment of this specification, a vehicle is further provided. The vehicle includes the power control system as described in the above embodiment. The power control system is configured to control the operation of the power system of the vehicle, and the power system includes an engine.

[0161] Specifically, the vehicle can be a fuel vehicle or a hybrid vehicle.

[0162] Exemplary Computer Program Product and Storage Medium

[0163] In addition to the above methods and devices, the power control method provided in the embodiments of this specification may also be a computer program product, which includes computer program instructions that, when run by a processor, cause the processor to execute the steps of the power control method according to various embodiments of this specification described in the "Exemplary Method" section above of this specification.

[0164] The computer program product may be written in any combination of one or more programming languages for programming code to perform the operations of the embodiments of this specification. The programming languages include object-oriented programming languages such as Java, C++, etc., and also include conventional procedural programming languages such as the "C" language or similar programming languages.

[0165] In addition, the embodiments of this specification also provide a computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to perform the steps of the power control method according to various embodiments of this specification described in the "Exemplary Method" section above of this specification.

[0166] Those of ordinary skill in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium, and when the computer program is executed, it may include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the embodiments provided in this specification may include non-volatile and / or volatile memories. Non-volatile memories may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memories may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0167] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0168] The above-described embodiments merely represent several implementation manners of this specification. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the solutions provided by the embodiments of this specification. It should be noted that for those of ordinary skill in the art, without departing from the concept of this specification, several modifications and improvements can still be made, and these all belong to the protection scope of this specification. Therefore, the protection scope of the patent of this specification shall be subject to the appended claims.

Claims

1. A power control method, characterized in that, Applied to a vehicle, the vehicle's powertrain includes an engine and at least one motor, and the method includes: Determine the current required power of the vehicle and the target operating mode of the powertrain based on target data, and determine the target subsystem in the powertrain based on the target operating mode of the powertrain. The target subsystem includes the engine and / or the motor. If the current required power is greater than the total rated output power of the powertrain, determine the current required output power of each target subsystem according to a predetermined frequency based on the current required power of the vehicle. The target data includes at least partial data of the current state of charge of the vehicle's power battery, the current operating condition of the vehicle, and the operating condition of the vehicle within a future predetermined time period. The predetermined frequency is greater than the target frequency, and the target frequency includes the maximum control frequency of the powertrain in the case where the required power of the vehicle is less than or equal to the total rated output power of the powertrain. If the current required output power of the engine is greater than the rated output power of the engine, determine the target output power of the engine based on the current required output power of the engine, and the target output power is greater than the rated output power of the engine. Control the operation of the engine based on the target output power.

2. The method according to claim 1, characterized in that The determining the current required output power of each target subsystem according to a predetermined frequency based on the current required power of the vehicle includes: Determine the current required output power of each target subsystem according to the predetermined frequency based on the current required power of the vehicle, the operating state of the target subsystem, and the operating state of the thermal management system until each target subsystem no longer meets the over-power operation condition. Wherein, the thermal management system is used for thermal management of the powertrain.

3. The method according to claim 2, wherein The operating state of the target subsystem includes the parameter values of each safety monitoring parameter of the target subsystem, and the operating state of the thermal management system includes the parameter values of each working parameter of the thermal management system. The method for determining whether the target subsystem meets the over-power operation condition includes: If the parameter value of at least one safety monitoring parameter of the target subsystem exceeds the corresponding predetermined range, and / or, the parameter value of at least one working parameter of the thermal management system exceeds the corresponding predetermined range, it is determined that the target subsystem does not meet the over-power operation condition. If the parameter values of each safety monitoring parameter of the target subsystem do not exceed the corresponding predetermined range, and the parameter values of each working parameter of the thermal management system do not exceed the corresponding predetermined range, it is determined that the target subsystem meets the over-power operation condition.

4. The method according to any one of claims 1 to 3, characterized in that, The determining the target output power of the engine based on the current required output power of the engine includes: Determine the target output power of the engine based on the current required output power of the engine and the output power limit of the engine at each predetermined operation duration. Among them, the output power limit of the engine at each predetermined operating duration is greater than the rated output power of the engine, and the output power limit of the engine at each predetermined operating duration matches the hardware of the engine.

5. The method according to claim 4, characterized in that The method for determining the output power limit of the engine at each predetermined operating duration includes: Based on the required continuous operating duration of the engine under the target operating conditions and the required output power under the required continuous operating duration, determining the output power limit of the engine at each predetermined operating duration; Or, based on the instantaneous output power of the motor in the power system at each predetermined operating duration, respectively determining the output power limit of the engine at each predetermined operating duration.

6. A power control device, characterized in that, Applied to a vehicle, the power system of the vehicle includes an engine and at least one motor, and the device includes: A first processing module, configured to determine the current required power of the vehicle and the target operating mode of the power system based on target data, and based on the target operating mode of the power system, determine the target subsystem in the power system, the target subsystem including the engine and / or the motor. If the current required power is greater than the total rated output power of the power system, then based on the current required power of the vehicle, determine the current required output power of each target subsystem at a predetermined frequency; the target data includes at least some of the current state of charge of the vehicle's power battery, the current operating conditions of the vehicle, and the operating conditions of the vehicle within a future predetermined duration; the predetermined frequency is greater than the target frequency, and the target frequency includes the maximum control frequency of the power system in the case where the required power of the vehicle is less than or equal to the total rated output power of the power system; A second processing module, configured to, if the current required output power of the engine is greater than the rated output power of the engine, determine the target output power of the engine based on the current required output power of the engine, the target output power being greater than the rated output power of the engine; A third processing module, configured to control the operation of the engine based on the target output power.

7. A power control system, characterized in that, Including a monitoring system and a controller, the monitoring system is configured to monitor at least some of the current state of charge of the vehicle's power battery, the current operating conditions of the vehicle, and the operating conditions of the vehicle within a future predetermined duration; The controller includes at least one processor and at least one memory, and a computer program is stored in the memory. When the computer program is executed by the processor, it implements the power control method according to any one of claims 1 to 5.

8. A vehicle, characterized in that, The vehicle includes the power control system according to claim 7, and the power control system is configured to control the operation of the vehicle's power system, and the power system includes an engine.

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