Power control method, device and system and vehicle

Abstract

The invention provides a power control method, device and system and a vehicle, the scheme is applied to the vehicle, a power system of the vehicle comprises an engine, and at least part of data in the current charge state of a power battery of the vehicle, the current operation working condition of the vehicle and the operation working condition of the vehicle in the future preset duration are used for controlling the power of the vehicle. When the current demand output power of the engine is larger than the rated output power of the engine, the target output power of the engine is determined based on the current demand output power of the engine, and the target output power is larger than the rated output power of the engine; and the engine is controlled to operate based on the target output power, so that the probability that the vehicle cannot effectively get out of trouble due to insufficient power can be effectively reduced by controlling the engine to operate at overpower under special working conditions such as pit passing, high roadbed climbing and long slope climbing, and the safety of vehicle operation is further improved.

Description

Technical Field

[0001] The present 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, the present 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 the present application provide the following technical solutions: In a first aspect, an embodiment of the present specification provides a power control method applied to a vehicle, the power system of the vehicle includes an engine, and the method includes: 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; 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; Based on the target output power, control the operation of the engine.

[0006] In an embodiment, the power system of the vehicle further includes at least one motor; The determining the current required output power of the engine based on target data includes: Based on the target data, determine the current required power of the vehicle and the target working mode of the power system; 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.

[0007] In one embodiment, 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: Based on the target operating mode of the powertrain, determining the target subsystem in the powertrain, 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 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, the total rated output power of the powertrain including the sum of the rated output powers of the target subsystems that provide energy in each target subsystem; 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.

[0008] In one embodiment, determining the current required output power of each target subsystem at a predetermined frequency based on the current required power of the vehicle includes: 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, determining 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; Wherein, the thermal management system is used to perform thermal management on the powertrain.

[0009] 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; 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 operating parameter of the thermal management system exceeds the corresponding predetermined range, then 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 operating parameter of the thermal management system do not exceed the corresponding predetermined range, then it is determined that the target subsystem meets the over-power operation condition.

[0010] In one embodiment, determining the target output power of the engine based on the current required output power of the engine includes: 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 operating durations; Wherein, the output power limits of the engine at various predetermined operating durations are all greater than the rated output power of the engine, and the output power limits of the engine at various predetermined operating durations match the hardware of the engine.

[0011] In one embodiment, the method for determining the output power limits of the engine at various predetermined operating durations includes: Determining the output power limits of the engine at various predetermined operating durations based on the required continuous operating duration of the engine under the target operating condition and the required output power during the required continuous operating duration; Or, determining the output power limits of the engine at various predetermined operating durations respectively based on the instantaneous output power of the motor in the power system at various predetermined operating durations.

[0012] In a second aspect, an embodiment of the present specification provides a power control device applied to a vehicle. The power system of the vehicle includes an engine, and the device includes: 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 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 duration; 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, and the target output power is 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.

[0013] 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 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 duration; The controller 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 one of the above.

[0014] In a fourth aspect, an embodiment of the present specification provides a vehicle, which includes the power control system as described above. The power control system is used to control the operation of the vehicle's power system, and the power system includes an engine.

[0015] 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, it implements the power control method as described in any one of the above.

[0016] 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, it implements the power control method as described in any one of the above.

[0017] It can be seen from the above technical solutions that 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 part 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, in special operating conditions such as crossing a pothole, a high roadbed, or climbing a long slope, by controlling the engine to operate at an overrated 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 of the Drawings

[0018] 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 according to the provided drawings.

[0019] Figure 1 It is a schematic flowchart of a power control method provided for the embodiment of the present specification.

[0020] Figure 2 It is a schematic flowchart of another power control method provided for the embodiment of the present specification.

[0021] Figure 3 A schematic structural diagram of a power control device provided for the embodiments of this specification.

[0022] Figure 4 A schematic structural diagram of a power control system provided for the embodiments of this specification. Specific embodiments

[0023] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the ordinary meanings understood by those of ordinary skill in the field to which this specification pertains. The "first", "second" and similar terms used in the embodiments of this specification do not denote any order, quantity or importance, but are only used to avoid confusion of components.

[0024] Unless otherwise required by the context, throughout this specification, "a plurality" means "at least two", and "including" is interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" etc. are intended to indicate that the specific features, structures, materials or characteristics related to the embodiment or example are included in at least one embodiment or example of this specification. The schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0025] Next, the technical solutions in the embodiments of this specification will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this specification.

[0026] Overview 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.

[0027] 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 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.

[0028] To solve the problem that in traditional methods, under special working conditions such as crossing pits, 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 this application, a power control scheme is provided. This scheme is applied to a vehicle, and the vehicle's power system 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, based on the current required output power of the engine, the target output power of the engine is determined. 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 working conditions such as crossing pits, high roadbeds, and climbing long slopes, by controlling the engine to operate with over-power, the probability that the vehicle is unable to effectively get out of trouble due to insufficient power can be effectively reduced, and further the safety of vehicle operation is improved.

[0029] Based on the above inventive concept, the power control method provided by the embodiments of this specification is described exemplarily below.

[0030] Exemplary method The embodiments of this specification provide a power control method, which is applied to a vehicle. The vehicle's power system includes an engine, as Figure 1 shown. This method includes: S101. Based on target data, determine the current required output power of the engine. The target data includes 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.

[0031] 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.

[0032] 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 slope climbing condition, a high roadbed condition, a pit crossing condition, etc.

[0033] 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.

[0034] The current road conditions of the vehicle and the road conditions in front of the vehicle can be detected based on a monitoring system. For example, the monitoring system can include an image acquisition device, a radar, etc.

[0035] In addition, when the vehicle is a hybrid vehicle, the target data can further include the current state of charge of the vehicle's power battery. In implementation, the power control unit can receive in real time the state of charge of the power battery sent by the vehicle's battery management system.

[0036] The current required output power of the engine is the power that the engine needs to output at the current moment to meet the power demand of the vehicle.

[0037] In implementation, the current required output power of the engine can be determined based on the target data. The target data can include at least some of the data such as 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 and the current operating condition of the vehicle and / or the operating condition of the vehicle within a future predetermined time period.

[0038] 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 power system 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.

[0039] 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.

[0040] 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 with over-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 working conditions such as crossing potholes, high roadbeds, and climbing long slopes, and further effectively reduce the probability that the vehicle cannot effectively get out of trouble due to insufficient power under special working conditions such as crossing potholes, high roadbeds, and climbing long slopes.

[0041] It can be understood that during the process of the engine operating with over-power, the safety parameters of the engine and the over-power operation duration can also be monitored in real time, and when the engine does not meet the over-power operation conditions, the output power of the engine can be reduced to meet the operation safety of the engine.

[0042] 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 requirements of the vehicle.

[0043] S103. Control the operation of the engine based on the target output power.

[0044] 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, which can be specifically set according to actual requirements.

[0045] Thus, under special working conditions such as crossing potholes, high roadbeds, and climbing long slopes, controlling the engine to operate with over-power can effectively reduce the probability that the vehicle cannot effectively get out of trouble due to insufficient power, and further improve the operation safety of the vehicle.

[0046] In a feasible implementation manner, the power system of the vehicle further includes at least one motor; The determining the current required output power of the engine based on the target data includes: Determining the current required power of the vehicle and the target working mode of the power system based on the target data; Based on the current required power of the vehicle and the target operating mode of the power system, determine the current required output power of the engine and the current required output power of each motor, where the current required output power of the motor is used to control the operation of the motor.

[0047] Specifically, the power system of the vehicle may further include at least one motor, for example, a drive motor, a generator, etc., that is, the vehicle is a hybrid vehicle.

[0048] If the vehicle is a hybrid vehicle, in 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 operating mode of the power system can be determined based on the target data.

[0049] The operating modes of the power system may include a pure electric mode (i.e., the vehicle is only driven by the motor and the engine does not work), a hybrid mode (i.e., the engine and the motor jointly drive the vehicle), an engine drive mode (i.e., the vehicle is only driven by the engine and the motor does not work), a charging mode (i.e., the energy provided by the engine is used to drive the vehicle and supply the motor to charge the power battery) and so on.

[0050] In implementation, the target operating mode of the power system can be determined based on the target data and a predetermined corresponding relationship. The predetermined corresponding relationship may include the corresponding relationship between the current operating condition of the vehicle, the operating condition of the vehicle within a future predetermined 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 a predetermined state of charge, the target operating mode of the power system may 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 may be an engine drive mode. The predetermined state of charge may 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 future predetermined 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 a predetermined power, the target operating mode of the power system may 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 may be an engine drive mode.

[0051] Among them, the current required power of the vehicle may include the current driving required power of the vehicle, and may also include the current charging required power of the vehicle. For example, when the target operating mode of the power system is the charging mode, the current required power of the vehicle may be the sum of the current driving required power of the vehicle and the current charging required power of the vehicle. When the target operating mode of the power system is the pure electric mode, the hybrid mode or the engine driving mode, the current required power of the vehicle may be the current driving required power of the vehicle.

[0052] In implementation, the current required output power of the engine and the current required output power of each motor can be determined based on the current required power of the vehicle and the target operating mode of the power system, so as to be able to maximize the satisfaction of the vehicle's power requirements while ensuring the effective operation of the power system, and further be able to effectively reduce the probability that the vehicle cannot effectively get out of trouble due to insufficient power under special working conditions such as crossing pits, high roadbeds, and climbing long slopes.

[0053] It can be understood that the current required output power of the motor can be used to control the operation of the motor. For example, when the current required output power of the motor is less than or equal to the rated output power of the motor, the operation of the motor can be controlled according to the current required output power of the motor. When the current required output power of the motor is greater than the rated output power of the motor, the operation of the motor can be controlled based on the current required 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.

[0054] In a feasible implementation manner, the determining the current required output power of the engine and the current required output power of each of the motors based on the current required power of the vehicle and the target operating mode of the power system includes: Determining a 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; 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, the current required output power of each of the target subsystems is determined at a predetermined frequency, and 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 of the target subsystems; 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.

[0055] Specifically, the target subsystem can be a subsystem that needs to operate in the power system, and can include an engine and / or a motor. Among them, based on the target operating mode of the power system, the subsystems that need to operate in the power system can be determined as target subsystems. For example, when the target operating mode is the charging mode, the target subsystems can include an engine and a generator; when the target operating mode is the pure electric mode, the target subsystems can include a drive motor; when the target operating mode is the hybrid mode, the target subsystems can include a drive motor and an engine; when the target operating mode is the engine drive mode, the target subsystems can include an engine.

[0056] The total equivalent output power of the power system can include the sum of the rated output powers of the target subsystems that are used to provide energy in each target subsystem. For example, the target subsystems used to provide energy can include an engine and a drive motor, while the generator is used for energy conversion and transmission.

[0057] If the current demand power of the vehicle is greater than the total rated output power of the power system, it can indicate that the current operating condition of the vehicle is a special condition such as driving over a pothole, a high roadbed, or climbing a long slope, 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, or climbing a long slope 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 demand output power of at least some 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 demand output power can be 0.

[0058] In implementation, the current demand output power of each target subsystem can be determined at a predetermined frequency, and the predetermined frequency is greater than the target frequency. Among them, the target frequency can include the maximum control frequency during the process of controlling 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. Thus, when the demand power of the vehicle is greater than the total rated output power of the power system, overclocking control of the power system can be achieved. By performing overclocking control on the power system, the current demand 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 achieved, and further reducing 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, or climbing a long slope.

[0059] In a feasible implementation manner, determining the current demand output power of each of the target subsystems according to a predetermined frequency based on the current demand power of the vehicle includes: 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 does not meet the over-power operation condition; Wherein, the thermal management system is used for thermal management of the power system.

[0060] 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.

[0061] The thermal management system can be used for thermal management of 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.

[0062] 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 based on the current required power of the vehicle, the operating states of each target subsystem, and the operating state of the thermal management system, power distribution is performed on each target subsystem 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.

[0063] 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 can be determined 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 the target subsystem is greater than the rated output power of the 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 the target subsystem is less than or equal to the rated output power of the target subsystem, so as to be able to achieve short-time over-power output of the power system while ensuring the safe and effective operation of each target subsystem.

[0064] 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 a 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 preferentially operates in over-power mode. If the vehicle's current required power still cannot be met when the drive motor operates in over-power mode, the engine and the drive motor operate in over-power mode simultaneously. Additionally, when multiple target subsystems all meet the over-power operation condition, power distribution can also be performed on each target subsystem based on the type of each target subsystem that meets 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.

[0065] Among them, when each target subsystem does not meet 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 can be stopped at a predetermined frequency. It can be understood that the power system can also be controlled to operate in over-power mode again after a predetermined time interval.

[0066] 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 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.

[0067] 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 an engine can include knock parameters, exhaust temperature, coolant temperature, oil temperature, etc., and the safety monitoring parameters of a drive motor and a generator can include coolant temperature, oil temperature, current, voltage, etc.

[0068] The operating parameters of the thermal management system can include the operating parameters of each component in the thermal management system. For example, they can include fan speed, water pump speed, oil pump speed, etc.

[0069] In implementation, for any target subsystem, during the process of determining whether the target subsystem meets the over-power operation condition, 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, 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 over-power operation condition. 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 over-power operation condition. 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 over-power operation condition.

[0070] Thus, through the method of the embodiments of the present application, the operating performance and safety of the power system can be effectively guaranteed during the over-power operation of the power system.

[0071] In a feasible implementation manner, determining the target output power of the engine based on the current required output power of the engine includes: Determining the target output power of the engine based on the current required output power of the engine and the output power limit values of the engine at each predetermined operation duration; Wherein, the output power limit values of the engine at each predetermined operation duration are all greater than the rated output power of the engine, and the output power limit values of the engine at each predetermined operation duration match the hardware of the engine.

[0072] 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 5 s, 10 s, etc. At the same time, the output power limit at the 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 the predetermined operation duration, and the shorter the predetermined operation duration, the greater the output power limit at the predetermined operation duration.

[0073] 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 each predetermined operation duration. 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. In addition, the current required output power of the engine can also be compared with the output power limit corresponding to the target operation duration among each predetermined operation duration. If the current required output power of the engine is less than the output power limit corresponding to the target operation 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 operation duration, the output power limit corresponding to the target operation duration is determined as the target output power of the engine. The target operation 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 on the premise of ensuring the operation safety of the engine.

[0074] Among them, the output power limits of the engine at each predetermined operation duration are matched with the hardware of the engine. For example, the output power limits of the engine at at least one predetermined operation duration can be determined according to the power output requirements of the engine under different working conditions. In addition, the output power limits of the engine at at least one predetermined operation 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 each predetermined operation duration, so as to ensure the safe and effective short-time high-power operation of the engine.

[0075] In a feasible implementation manner, the method for determining the output power limits of the engine at each predetermined operation duration includes: Based on the required continuous operation duration of the engine under the target working condition and the required output power under the required continuous operation duration, determine the output power limit of the engine at each predetermined operation duration; Or, based on the instantaneous output power of the motor in the power system at each predetermined operation duration, respectively determine the output power limit of the engine at each predetermined operation duration.

[0076] Specifically, the target working condition can be the working condition with the highest power demand among each predetermined working condition of the vehicle, that is, the most severe working condition. In implementation, the required continuous operation duration of the engine under the target working condition can be used as a predetermined operation duration, and the required output power of the engine under this required continuous operation duration can be used as the output power limit of the engine at this predetermined operation duration. At the same time, the engine can also be configured with hardware based on the required output power of the engine under this required continuous operation duration, without using the output power limit of the engine at this predetermined operation duration as the rated output power of the engine. Thus, it can meet the high-power demand of the engine under special working conditions on the premise of reducing the hardware cost of the engine.

[0077] It can be understood that at least one other predetermined operation duration and the output power limit of the engine at this other predetermined operation duration can also be determined based on the required output power of the engine under this required continuous operation duration. This other predetermined operation duration is greater than this required continuous operation duration, and the output power limit of the engine at this other predetermined operation duration is less than the required output power of the engine under this required continuous operation duration.

[0078] In implementation, when the power system of the vehicle does not include a motor, that is, when the vehicle is a fuel vehicle, based on the required continuous operation duration of the engine under the target working condition and the required output power of the engine under this required continuous operation duration, determine the output power limit of the engine at each predetermined operation duration.

[0079] In addition, the output power limit of the engine at each predetermined operation duration can also be determined based on the instantaneous output power of the motor at each predetermined operation duration. For example, the predetermined operation duration corresponding to the engine is the same as each predetermined operation duration corresponding to the motor, and for any predetermined operation duration, the output power limit of the engine at this predetermined operation duration can be the same as the instantaneous output power of the motor at this predetermined operation duration. At the same time, the engine can be configured with hardware based on the output power limit of the engine at each predetermined operation duration.

[0080] 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 limit of the engine at each predetermined operation duration can be determined respectively based on the instantaneous output power of the electric motor at each predetermined operation duration.

[0081] Currently, for a hybrid vehicle, 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 electric motor. However, a larger rated output power requires a higher engine hardware configuration, which greatly increases 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 electric motor at each predetermined operation duration.

[0082] The following takes a hybrid vehicle as an example to illustrate the specific implementation process of the power control method of the present application. As Figure 2 shown, the power control method of the present application includes: 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; 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; 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; 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 subsystem; 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; 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; S206. Determine the current required output power of each target subsystem based on a predetermined policy, and perform step S207; 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 based on the target output power of each target subsystem.

[0083] Exemplary device 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, and the device includes: 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 predetermined future time period; 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; A third processing module 303, configured to control the operation of the engine based on the target output power.

[0084] 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: Determine the current required power of the vehicle and the target operating mode of the power system based on the target data; 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.

[0085] In a feasible implementation manner, specifically, the first processing module 301 is configured to: Determine the target subsystems in the power system based on the target operating mode of the power system, where the target subsystems include the engine and / or the motor; If the current required power is greater than the total rated output power of the power system, determine the current required output power of each target subsystem at a predetermined frequency based on the current required power of the vehicle, where 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; Among them, 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 power system when the required power of the vehicle is less than or equal to the total rated output power of the power system.

[0086] In a feasible implementation manner, the first processing module 301 is specifically configured to: 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 according to the predetermined frequency until none of the target subsystems satisfies the over-power operation condition; Among them, the thermal management system is used to perform thermal management on the power system.

[0087] 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 operating parameter of the thermal management system; the first processing module 301 is specifically configured to: 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 satisfy 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 operating parameter of the thermal management system do not exceed the corresponding predetermined range, it is determined that the target subsystem satisfies the over-power operation condition.

[0088] In a feasible implementation manner, the second processing module 302 is specifically configured to: Based on the current required output power of the engine and the output power limits of the engine at each predetermined operating duration, determine the target output power of the engine; Among them, the output power limits of the engine at each predetermined operating duration are all greater than the rated output power of the engine, and the output power limits of the engine at each predetermined operating duration match the hardware of the engine.

[0089] In a feasible implementation manner, the second processing module 302 is further configured to: 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 each predetermined operating duration; Alternatively, based on the instantaneous output power of the motor in the power system at each predetermined operation duration, determine the output power limit of the engine at each predetermined operation duration respectively.

[0090] 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 can 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.

[0091] Exemplary device 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 used to monitor at least part 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 future predetermined duration. 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.

[0092] Exemplary vehicle In an exemplary embodiment of this specification, a vehicle is further provided. The vehicle includes the power control system as described in the above embodiments. The power control system is used to control the operation of the power system of the vehicle, and the power system includes an engine.

[0093] Specifically, the vehicle can be a fuel vehicle or a hybrid vehicle.

[0094] Exemplary computer program product and storage medium In addition to the above methods and devices, the power control method provided in the embodiments of this specification can also be a computer program product, which includes computer program instructions. When the computer program instructions are run by a processor, the processor is caused to execute the steps in the power control method according to various embodiments of this specification described in the "Exemplary Method" section above.

[0095] The computer program product can be written in any combination of one or more programming languages for programming code to execute 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.

[0096] In addition, an embodiment of this specification also provides a computer-readable storage medium, on which a computer program is stored. The computer program, when executed by a processor, performs the steps in the power control method according to various embodiments of this specification described in the above "Exemplary Method" section.

[0097] Those of ordinary skill in the art can understand that all or part of the processes in the methods of 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. When the computer program is executed, it can 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 various embodiments provided in this specification can include non-volatile and / or volatile memories. Non-volatile memories can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memories can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0098] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise 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.

[0099] The above-described embodiments only 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 should be subject to the appended claims.

Claims

1. A power control method, characterized in that: Applied to a vehicle, the power system of the vehicle includes an engine, and the method includes: Determining a current required output power of the engine based on target data, the target data including at least part of data of a current state of charge of a power battery of the vehicle, a current operating condition of the vehicle, and an operating condition of the vehicle within a predetermined time in the future; If the current required output power of the engine is greater than the rated output power of the engine, determining 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; Based on the target output power, the engine is controlled to operate.

2. The method according to claim 1, characterized in that The vehicle's powertrain also includes at least one electric motor; The step of determining the current required output power of the engine based on the target data includes: Determining a current required power of the vehicle and a target operating mode of the power system based on the target data; Based on the current power requirement of the vehicle and the target operating mode of the power system, the current required output power of the engine and the current required output power of each of the motors are determined, and the current required output power of the motors is used to control the operation of the motors.

3. The method according to claim 2, characterized in that The determining the current required output power of the engine and the current required output power of each of the motors based on the current required power of the vehicle and the target operating mode of the power system includes: Determining a target subsystem in the power system based on a target operating mode of the power system, wherein 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 power system, the current required output power of each of the target subsystems is determined according to a predetermined frequency based on the current required power of the vehicle, and the total rated output power of the power system includes the sum of the rated output powers of the target subsystems used to provide energy in each of the target subsystems; Among them, the currently 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 when the required power of the vehicle is less than or equal to the total rated output power of the power system.

4. The method according to claim 3, characterized in that The determining the current required output power of each of the target subsystems based on the current required power of the vehicle according to a predetermined frequency includes: 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, determining the current required output power of each of the target subsystems according to the predetermined frequency until each of the target subsystems does not meet the over-power operating condition; Wherein, the thermal management system is used to perform thermal management on the power system.

5. The method according to claim 4, characterized in that The operating state of the target subsystem includes parameter values ​​of various safety monitoring parameters of the target subsystem, and the operating state of the thermal management system includes parameter values ​​of various working parameters 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 operating 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 the various safety monitoring parameters of the target subsystem do not exceed the corresponding predetermined ranges, and the parameter values ​​of the various operating 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 conditions.

6. The method according to any one of claims 1 to 5, characterized in that: The step of determining the target output power of the engine based on the current required output power of the engine comprises: Determining a target output power of the engine based on a current required output power of the engine and an output power limit of the engine at each predetermined operating time; The output power limit of the engine at each predetermined operating time is greater than the rated output power of the engine, and the output power limit of the engine at each predetermined operating time matches the hardware of the engine.

7. The method according to claim 6, characterized in that The method for determining the output power limit value of the engine at each predetermined operating time includes: Determining the output power limit of the engine at each predetermined operating duration 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; Alternatively, based on the instantaneous output power of the motor in the power system at each predetermined operating duration, the output power limit of the engine at each predetermined operating duration is determined respectively.

8. A power control device, characterized in that: Applied to a vehicle, the power system of the vehicle includes an engine, and the device includes: A first processing module, configured to determine a current required output power of the engine based on target data, wherein the target data includes at least part of data of a current state of charge of a power battery of the vehicle, a current operating condition of the vehicle, and an operating condition of the vehicle within a predetermined time in the future; 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, wherein the target output power is greater than the rated output power of the engine; The third processing module is used to control the operation of the engine based on the target output power.

9. A power control system, characterized in that: The system comprises a monitoring system and a controller, wherein the monitoring system is used to monitor at least part of 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 time in the future; The controller includes at least one processor and at least one memory, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the power control method according to any one of claims 1 to 7 is implemented.

10. A vehicle, characterized in that: The vehicle comprises a power control system as claimed in claim 9, wherein the power control system is used to control the operation of a power system of the vehicle, wherein the power system comprises an engine.

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