Control method and control device of range extending power system and aviation aircraft

Abstract

The invention discloses a control method and a control device of a range extending power system and an aviation aircraft, the control method and the control device are applied to the aviation aircraft, the range extending power system comprises a range extender and a power battery, and the control method comprises the following steps: establishing the range extending output power of the range extender in at least one characteristic working interval based on the operation condition of the aviation aircraft; acquiring operation data of the aviation aircraft and electric quantity data of a power battery; determining the required power of the aviation aircraft according to the operation data and the electric quantity data; and adjusting the output power of the range extender and the power battery according to the required power and the range extending output power. According to the control method provided by the invention, different extended range output powers are established according to the operation conditions of the aviation aircraft, and the output powers of the range extender and the power battery are adjusted according to the extended range output powers and the required power of the aviation aircraft, so that the aero-engine works in a high-efficiency interval, and the aviation fuel consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of aviation vehicles, and in particular to a control method and a control device of an extended-range power system and an aviation vehicle. Background Art

[0002] With the popularization of low-altitude economy and the commercialization of electric vertical takeoff and landing aircraft (Electric Vertical Takeoff and Landing, referred to as EVTOL), the endurance of aircraft has increased. In the prior art, when long-distance flight (for example, more than 200km) is required, the endurance of the aircraft power system is usually improved by increasing the battery power or adding a range extender. However, the existing aircraft power system has the following problems: Under the condition that the existing battery technology cannot achieve a breakthrough improvement in the short term, relying solely on batteries cannot significantly improve the endurance and cannot meet market demand. Using a range extender as a propulsion motor power source can effectively improve the endurance of EVTOL, but the existing aircraft power system control strategy does not optimize the traditional aircraft engine control strategy according to the characteristics of the decoupling of the range extender's power and the propeller, and cannot improve the problem of aviation fuel consumption of aircraft engines. Summary of the invention

[0003] The present invention provides a control method, a control device and an aircraft for a range-extended power system. By optimizing the output power of the battery and the range extender under different working conditions, the aircraft engine can operate within a high-efficiency working range, thereby solving the technical problem that the control strategy of the existing range-extender aircraft engine cannot take into account both endurance and fuel consumption management, resulting in high aviation fuel energy consumption, and achieving the technical effect of reducing aviation fuel consumption by more than 5%.

[0004] According to a first aspect of the present invention, a control method for a range-extended power system is provided, which is applied to an aircraft. The range-extended power system includes a range extender and a power battery. The control method includes:

[0005] Based on the operating conditions of the aircraft, establishing the extended-range output power of the range extender in at least one characteristic working interval;

[0006] Acquiring operation data of the aircraft and power data of the power battery;

[0007] The required power of the aircraft is determined according to the operation data and the power data; and the output power of the range extender and the power battery is adjusted according to the required power and the extended-range output power.

[0008] Optionally, the extended-range output power includes at least one of the following: a first extended-range output power, a second extended-range output power, and a third extended-range output power;

[0009] Wherein, the first extended-range output power is less than the maximum output power of the range extender;

[0010] The second extended-range output power is less than the first extended-range output power;

[0011] The third extended-range output power is less than the second extended-range output power.

[0012] Optionally, establishing the extended-range output power of the range extender in at least one characteristic working interval based on the operating condition of the aircraft includes:

[0013] Establishing an operating characteristic curve of the range extender based on the operating conditions of the aircraft;

[0014] Based on the working characteristic curve, a maximum efficient working range of the range extender, a medium efficient working range of the range extender and a minimum efficient working range of the range extender are established;

[0015] Determine the first extended-range output power according to the maximum efficient working interval of the range extender; and / or,

[0016] Determining the second extended-range output power according to the medium-high efficiency working range of the range extender; and / or,

[0017] The third extended-range output power is established according to the minimum efficient working interval of the range extender.

[0018] Optionally, adjusting the output power of the range extender and the power battery according to the required power and the extended-range output power includes:

[0019] When the required power is greater than the first extended-range output power and less than or equal to the maximum output power of the range extender, the range extender is controlled to output at the first extended-range output power, and the power battery is controlled to operate in a power output mode.

[0020] Optionally, adjusting the output power of the range extender and the power battery according to the required power and the extended-range output power includes:

[0021] When the required power is greater than the second extended-range output power and less than or equal to the first extended-range output power, the range extender is controlled to output at the first extended-range output power, and the power battery is controlled to operate in a charging mode.

[0022] Optionally, adjusting the output power of the range extender and the power battery according to the required power and the extended-range output power includes:

[0023] When the required power is greater than the third extended-range output power and less than or equal to the second extended-range output power, the range extender is controlled to output at the second extended-range output power, and the power battery is controlled to operate in a charging mode.

[0024] Optionally, adjusting the output power of the range extender and the power battery according to the required power and the extended-range output power includes:

[0025] When the required power is greater than the minimum output power of the range extender and less than or equal to the third extended-range output power, the range extender is controlled to output at the third extended-range output power, and the power battery is controlled to operate in a charging mode.

[0026] Optionally, adjusting the output power of the range extender and the power battery according to the required power and the extended-range output power includes:

[0027] When the required power is greater than the maximum output power of the range extender, the range extender is controlled to output at the maximum output power, and the power battery is controlled to operate in a power output mode; and / or,

[0028] When the required power is less than the minimum output power of the range extender, the power battery is controlled to operate in a power output mode.

[0029] According to a second aspect of the present invention, a control device for a range-extended power system is provided, which is applied to an aircraft, wherein the range-extended power system comprises a range extender and a power battery, and the control device is used to execute the control method for the range-extended power system described in any one of the first aspects, and the control device comprises:

[0030] A characteristic operating point establishment module, used to establish the extended-range output power of the range extender in at least one characteristic working interval based on the operating conditions of the aircraft;

[0031] A data acquisition module, used to acquire the operation data of the aircraft and the power data of the power battery;

[0032] A calculation module, used for determining the required power of the aircraft according to the operation data and the power data;

[0033] The range-extending control module is used to adjust the output power of the range extender and the power battery according to the required power and the range-extending output power.

[0034] According to a third aspect of the present invention, there is provided an aircraft, comprising: an extended-range power system, and a control device for the extended-range power system according to the second aspect.

[0035] The present invention discloses a control method, a control device and an aircraft for a range-extended power system, which are applied to aircraft. The range-extended power system includes a range extender and a power battery. The control method includes: establishing the range-extended output power of the range extender in at least one characteristic working range based on the operating conditions of the aircraft; obtaining the operating data of the aircraft and the power data of the power battery; determining the required power of the aircraft according to the operating data and the power data; and adjusting the output power of the range extender and the power battery according to the required power and the range-extended output power. The control method of the range-extended power system provided by the present invention optimizes the output power of the battery and the range extender under different working conditions, so that the aircraft engine can work in an efficient working range, solves the technical problem that the control strategy of the existing range-extender aircraft engine cannot take into account both endurance and fuel consumption management, resulting in high aviation fuel energy consumption, and achieves the technical effect of reducing aviation fuel consumption by more than 5%.

[0036] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 is a flow chart of a control method of a range-extended power system provided by an embodiment of the present invention;

[0039] Figure 2 is a flow chart of a control method of a range-extended power system according to a first alternative embodiment provided by an embodiment of the present invention;

[0040] Figure 3 is a flow chart of a control method of a range-extended power system according to a second alternative embodiment provided by an embodiment of the present invention;

[0041] Figure 4 is a flow chart of a control method of a range-extended power system according to a third alternative embodiment provided by an embodiment of the present invention;

[0042] Figure 5 is a flow chart of a control method of a range-extended power system according to a fourth alternative embodiment provided by an embodiment of the present invention;

[0043] Figure 6 is a flow chart of a control method of a range-extended power system according to a fifth alternative embodiment provided by an embodiment of the present invention;

[0044] Figure 7 is a flow chart of a control method of a range-extended power system according to a sixth alternative embodiment provided by an embodiment of the present invention;

[0045] Figure 8 It is a block diagram of a control device of a range-extended power system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0048] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0049] Figure 1 This is a flow chart of a control method for a range-extended power system provided by an embodiment of the present invention. The control method for a range-extended power system provided by an embodiment of the present invention is applied to an aircraft. The range-extended power system includes a range extender and a power battery. The range extender of the present application includes at least an aircraft engine and a generator, and the aircraft engine is mechanically decoupled from the propeller. In the range-extended power system of the present application, the maximum output power of the range extender is greater than the maximum output power of the power battery.

[0050] See also Figure 1 As shown, the control method includes:

[0051] S1. Based on the operating conditions of the aircraft, establish the extended-range output power of the range extender in at least one characteristic working interval.

[0052] Specifically, an aircraft is a device that can perform controlled flight in the atmosphere, such as an electric vertical takeoff and landing (EVTOL). The extended-range power system is mainly used to increase the range and solve the problem of range anxiety. The extended-range power system includes a range extender and a power battery. The range extender is a device that can provide additional electrical energy. Its main function is to work with the power battery in the extended-range power system to increase the range.

[0053] When performing work tasks, aircraft have a variety of different operating conditions, including but not limited to: take-off, climb, cruise, descent and landing and other typical conditions.

[0054] The characteristic operating range indicates that the aircraft's engine is in a working state with high fuel efficiency (for example, fuel efficiency greater than or equal to 60%). The extended-range output power indicates the output power of the range extender when the engine is operating in the characteristic operating range (i.e., a working state with high fuel efficiency) under specific aircraft operating conditions (such as takeoff, climb, cruise, landing or landing).

[0055] Based on the operating conditions of the aircraft, within the maximum power output range of the range extender, the range extender output power in at least one characteristic working interval is established, specifically: under different operating conditions of the aircraft, the corresponding range extender output power is calibrated and established, so that the engine of the aircraft has a higher fuel efficiency (for example, the fuel efficiency is greater than or equal to 60%). In this embodiment, each operating condition of the aircraft (such as take-off, climb, cruise, landing or landing) corresponds to one or more characteristic working intervals (multiple characteristic working intervals have different fuel efficiencies); each characteristic working interval has an extended-range output power.

[0056] It should be noted that the numerical value corresponding to higher fuel efficiency can be defined as different values ​​under different working conditions. For example, under cruising conditions, higher fuel efficiency means that the fuel efficiency is greater than or equal to 90%; under climbing conditions, higher fuel efficiency means that the fuel efficiency is greater than or equal to 60%.

[0057] S2. Acquire the operation data of the aircraft and the power data of the power battery.

[0058] The operation data is data representing the operation instructions related to the flight driving of the aircraft. Typically, the operation data includes but is not limited to: power lever signals, such as power lever angle (PLA). The power lever is a control device used to adjust the throttle opening or output torque of the aircraft.

[0059] The power battery power data is data that characterizes the battery life. Typically, the current data includes but is not limited to: the remaining power of the power battery, or the ratio of the remaining power to the rated capacity of the battery.

[0060] Specifically, the control strategy of the extended-range power system is executed by the Air Handling Unit Control Unit, which is mainly used to adjust and manage the operation of the aircraft's internal environment system. In this application, the AHCU is also used to detect and obtain the operating data of the aircraft and the power data of the power battery.

[0061] S3. Determine the required power of the aircraft according to the operation data and the power data.

[0062] The required power of the aircraft refers to a real-time power request required to maintain the operation of the aircraft.

[0063] Specifically, the power request calculation strategy can be stored in the AHCU of the aircraft, and the operation data and power data obtained in the above step S2 can be imported into the power request calculation strategy to calculate the required power required for the current operation of the aircraft in real time. For example, when the aircraft is in the process of climbing, the AHCU installed in the aircraft detects the climbing instruction issued by the staff, and simultaneously obtains the operation data of the aircraft and the power data of the power battery, and calculates the required power of the aircraft at this time according to the obtained operation data and the power data of the power battery.

[0064] S4. Adjust the output power of the range extender and the power battery according to the required power and the extended-range output power.

[0065] Specifically, under different operating conditions, the required power determined in the above step S3 is compared with the extended-range output power established in the above step S1. When the required power under the same operating condition (such as take-off, climb, cruise, landing or landing) is greater than the extended-range output power, the range extender is controlled to output the extended-range output power established in the above step S1, and the output power of the power battery is increased at the same time, so that the sum of the output powers of the range extender and the power battery reaches the required power, thereby realizing power following control (i.e., constant power control) at different operating points.

[0066] The embodiments of the present invention optimize the output power of the battery and the range extender under different working conditions so that the aircraft engine can operate within an efficient working range, thereby solving the technical problem that the control strategy of the existing range extender aircraft engine cannot take into account both endurance and fuel consumption management, resulting in high aviation fuel energy consumption, and achieves the technical effect of reducing aviation fuel consumption by more than 5%.

[0067] Optionally, the extended-range output power includes at least one of the following: a first extended-range output power, a second extended-range output power, and a third extended-range output power; wherein the first extended-range output power is less than the maximum output power of the range extender; the second extended-range output power is less than the first extended-range output power; and the third extended-range output power is less than the second extended-range output power. In this embodiment, the first extended-range output power, the second extended-range output power, and the third extended-range output power correspond to characteristic operating intervals of different operating points, respectively.

[0068] On the basis of the above-mentioned embodiment, this embodiment further refines the power following control strategy for executing different operating points based on the extended-range output power. Figure 2 is a flow chart of a control method of a range-extended power system according to a first alternative embodiment of the present invention. Figure 3 is a flow chart of a control method of a range-extended power system according to a second alternative embodiment provided by an embodiment of the present invention, Figure 4 is a flow chart of a control method of a range-extended power system according to a third alternative embodiment provided by an embodiment of the present invention, Figure 5 is a flow chart of a control method for a range-extended power system according to a fourth alternative embodiment of the present invention. Figure 6 is a flow chart of a control method of a range-extended power system according to a fifth alternative embodiment of the present invention. Figure 7 It is a flow chart of a control method of an extended-range power system according to a sixth alternative embodiment provided by an embodiment of the present invention.

[0069] refer to Figure 2 As shown: The control method of the present application comprises the following steps:

[0070] S201. Establishing an operating characteristic curve of the range extender based on the operating conditions of the aircraft.

[0071] Specifically, an operating characteristic curve of the range extender is constructed according to the operating conditions of the aircraft (such as take-off, climb, cruise, descent and landing, etc.). This operating characteristic curve is used to characterize the corresponding relationship between the engine fuel consumption and the output power of the range extender under different operating conditions of the aircraft.

[0072] S202. Establishing a maximum efficient working range of the range extender, a medium efficient working range of the range extender, and a minimum efficient working range of the range extender based on the working characteristic curve.

[0073] Specifically, based on the working characteristic curve established in the above step S201, the maximum efficient working range of the range extender, the medium efficient working range of the range extender and the minimum efficient working range of the range extender are established. Among them, the maximum efficient working range of the range extender means that when the range extender is in a high power output condition, the engine is in a working state with a higher fuel efficiency (for example, the fuel efficiency is greater than or equal to 60%); the medium efficient working range of the range extender means that when the range extender is in a medium power output condition, the engine is in a working state with a higher fuel efficiency (for example, the fuel efficiency is greater than or equal to 60%); the minimum efficient working range of the range extender means that when the range extender is in a low power output condition, the engine is in a working state with a higher fuel efficiency (for example, the fuel efficiency is greater than or equal to 60%).

[0074] S203: Determine a first extended-range output power according to the maximum efficient working range of the range extender.

[0075] Specifically, the first extended-range output power of the range extender is determined according to the maximum efficient working range of the range extender established in the above step S202, wherein the first extended-range output power refers to the output power of the range extender required to maintain the engine in a working state with a higher fuel efficiency (for example, a fuel efficiency greater than or equal to 60%) when the aircraft is in a high-power output condition.

[0076] S204: Acquire the operation data of the aircraft and the power data of the power battery.

[0077] S205: Determine the required power of the aircraft according to the operation data and the power data.

[0078] S206: Compare the required power with the first extended-range output power.

[0079] When the required power is greater than the first extended-range output power and less than or equal to the maximum output power of the range extender, step S2061 is executed; when the required power is less than the first extended-range output power, step S2062 is executed.

[0080] S2061: Control the range extender to output at a first extended-range output power, and control the power battery to operate in a power output mode.

[0081] Specifically, the required power of the aircraft determined in the above step S205 is compared with the first extended-range output power of the aircraft and the maximum output power of the range extender. When the required power is greater than the first extended-range output power and less than or equal to the maximum output power of the range extender, the range extender is controlled to output the first extended-range output power, and the power battery is controlled to operate in the power output mode to meet the power required by the aircraft at this time.

[0082] S2062: Control the range extender to output at a first extended-range output power, and control the power battery to operate in a charging mode.

[0083] Specifically, the aircraft demand power determined in the above step S205 is compared with the first extended-range output power of the aircraft. When the demand power is less than the first extended-range output power, the range extender is controlled to output the first extended-range output power, and the power battery is controlled to operate in the charging mode. Since the demand power is less than the first extended-range output power at this time, the range extender uses the remaining power to charge the power battery while driving the aircraft to maintain constant power control, and can increase the flight time of the aircraft power battery.

[0084] Alternatively, refer to Figure 3 As shown: The control method of the present application comprises the following steps:

[0085] S301. Establishing an operating characteristic curve of the range extender based on the operating conditions of the aircraft.

[0086] S302, establishing a maximum efficient working range of the range extender, a medium efficient working range of the range extender, and a minimum efficient working range of the range extender based on the working characteristic curve.

[0087] S303: Determine a first extended-range output power according to the maximum efficient working range of the range extender, and determine a second extended-range output power according to the medium efficient working range of the range extender.

[0088] Specifically, the second extended-range output power of the range extender is determined according to the medium-efficiency working interval of the range extender established in the above step S302, wherein the second extended-range output power refers to the output power of the range extender required to maintain the engine in a working state with a higher fuel efficiency (for example, a fuel efficiency greater than or equal to 60%) when the aircraft is in a medium power output condition.

[0089] S304: Acquire the operation data of the aircraft and the power data of the power battery.

[0090] S305: Determine the required power of the aircraft according to the operation data and the power data.

[0091] S306: Compare the required power with the first extended-range output power and the second extended-range output power.

[0092] When the required power is greater than the first extended-range output power, execute step S3060; when the required power is greater than the second extended-range output power and less than or equal to the first extended-range output power, execute step S3061; when the required power is less than the second extended-range output power, execute step S3062.

[0093] S3060: Control the range extender to output at the first extended-range output power, and control the power battery to operate in the power output mode.

[0094] S3061: Control the range extender to output at a first extended-range output power, and control the power battery to operate in a charging mode.

[0095] Specifically, the aircraft demand power calculated in the above step S305 is compared with the first extended-range output power and the second extended-range output power of the aircraft. When the demand power is greater than the first extended-range output power, the range extender is controlled to output the first extended-range output power, and the power battery is controlled to operate in the power output mode; when the demand power is greater than the second extended-range output power, and less than or equal to the first extended-range output power, the range extender is controlled to output the first extended-range output power, and the power battery is controlled to operate in the charging mode. Since the demand power is less than the first extended-range output power at this time, the range extender uses the remaining power to charge the power battery while driving the aircraft to maintain constant power control, and can increase the flight time of the aircraft power battery.

[0096] S3062: Control the range extender to output at the second extended-range output power, and control the power battery to operate in a charging mode.

[0097] Specifically, the aircraft demand power determined in the above step S305 is compared with the first extended-range output power and the second extended-range output power of the aircraft. When the demand power is less than the second extended-range output power, the range extender is controlled to output the second extended-range output power, and the power battery is controlled to operate in the charging mode. Since the demand power is less than the second extended-range output power at this time, the range extender uses the remaining power to charge the power battery while driving the aircraft to maintain constant power control, and at the same time can increase the flight time of the aircraft power battery.

[0098] Alternatively, refer to Figure 4 As shown, the control method of the present application includes the following steps:

[0099] S401. Establishing an operating characteristic curve of the range extender based on the operating conditions of the aircraft.

[0100] S402, establishing a maximum efficient working range of the range extender, a medium efficient working range of the range extender, and a minimum efficient working range of the range extender based on the working characteristic curve.

[0101] S403, determining a first extended-range output power according to the maximum efficient working interval of the range extender, determining a second extended-range output power according to the medium efficient working interval of the range extender, and determining a third extended-range output power according to the minimum efficient working interval of the range extender.

[0102] Specifically, the third extended-range output power of the range extender is determined according to the minimum efficient working interval of the range extender established in the above step S402, wherein the third extended-range output power refers to the output power of the range extender required to maintain the engine in a working state with a higher fuel efficiency (for example, a fuel efficiency greater than or equal to 60%) when the aircraft is in a minimum power output condition.

[0103] S404: Acquire the operation data of the aircraft and the power data of the power battery.

[0104] S405: Determine the required power of the aircraft according to the operation data and the power data.

[0105] S406: Compare the required power with the first extended-range output power, the second extended-range output power, and the third extended-range output power.

[0106] When the required power is greater than the first extended-range output power, execute step S4060; when the required power is greater than the second extended-range output power, and less than or equal to the first extended-range output power, execute step S4061; when the required power is greater than the third extended-range output power, and less than or equal to the second extended-range output power, execute step S4062; when the required power is less than the third extended-range output power, execute step S4063.

[0107] S4060, controlling the range extender to output at a first extended-range output power, and controlling the power battery to operate in a power output mode.

[0108] S4061. Control the range extender to output at a first extended-range output power, and control the power battery to operate in a charging mode.

[0109] S4062: Control the range extender to output at the second extended-range output power, and control the power battery to operate in a charging mode.

[0110] S4063: Control the range extender to output at the third extended-range output power, and control the power battery to operate in the charging mode.

[0111] Specifically, the aircraft demand power determined in the above step S405 is compared with the third extended-range output power of the aircraft. When the demand power is less than the third extended-range output power, the range extender is controlled to output the third extended-range output power, and the power battery is controlled to operate in the charging mode. Since the demand power is less than the third extended-range output power at this time, the range extender uses the remaining power to charge the power battery while driving the aircraft to maintain constant power control, and at the same time can increase the flight time of the aircraft power battery.

[0112] Alternatively, refer to Figure 5 As shown, the control method of the present application includes the following steps:

[0113] S501. Establishing an operating characteristic curve of the range extender based on the operating conditions of the aircraft.

[0114] S502, establishing a maximum efficient working range of the range extender, a medium efficient working range of the range extender, and a minimum efficient working range of the range extender based on the working characteristic curve, and determining a first range extender output power according to the maximum efficient working range of the range extender.

[0115] S503: Acquire the operation data of the aircraft and the power data of the power battery.

[0116] S504: Determine the required power of the aircraft according to the operation data and the power data.

[0117] S505 : Compare the required power with the maximum output power of the range extender and the first extended-range output power respectively.

[0118] When the required power is greater than the maximum output power of the range extender, execute step S5051; when the required power is greater than the first range extender output power and less than or equal to the maximum output power of the range extender, execute step S5052; when the required power is less than the first range extender output power, execute step S5053.

[0119] S5051. Control the range extender to output at the maximum output power, and control the power battery to operate in the power output mode.

[0120] S5052: Control the range extender to output at a first range-extended output power, and control the power battery to operate in a power output mode.

[0121] S5053: Control the range extender to output at the first extended-range output power, and control the power battery to operate in a charging mode.

[0122] Alternatively, refer to Figure 6 As shown:

[0123] S601. Establish an operating characteristic curve of the range extender based on the operating conditions of the aircraft.

[0124] S602, establishing a maximum high-efficiency working range of the range extender, a medium high-efficiency working range of the range extender, and a minimum high-efficiency working range of the range extender based on the working characteristic curve, and determining a third range extender output power according to the minimum high-efficiency working range of the range extender.

[0125] S603: Acquire the operation data of the aircraft and the power data of the power battery.

[0126] S604: Determine the required power of the aircraft according to the operation data and the power data.

[0127] S605 . Compare the required power with the minimum output power of the range extender and the third extended-range output power respectively.

[0128] When the required power is less than the minimum output power of the range extender, execute step S6050; when the required power is greater than the minimum output power of the range extender and less than or equal to the third extended-range output power, execute step S6051; when the required power is greater than the third extended-range output power, execute step S6052.

[0129] S6050, control the power battery to operate in power output mode.

[0130] S6051. Control the range extender to output at the third extended-range output power, and control the power battery to operate in a charging mode.

[0131] S6052. Control the range extender to output at the second extended-range output power, and control the power battery to operate in a charging mode.

[0132] Alternatively, refer to Figure 7 As shown, the control method of the present application includes the following steps:

[0133] S701. Establish an operating characteristic curve of the range extender based on the operating conditions of the aircraft.

[0134] S702. Establish a maximum efficient working range of the range extender, a medium efficient working range of the range extender, and a minimum efficient working range of the range extender based on the working characteristic curve, and determine a first extended-range output power according to the maximum efficient working range of the range extender, and determine a third extended-range output power according to the minimum efficient working range of the range extender.

[0135] S703: Acquire the operation data of the aircraft and the power data of the power battery.

[0136] S704: Determine the required power of the aircraft according to the operation data and the power data.

[0137] S705 . Compare the required power with the maximum output power, the minimum output power, the first extended-range output power, and the third extended-range output power of the range extender respectively.

[0138] When the required power is greater than the maximum output power of the range extender, execute step S7051; when the required power is greater than the first range extender output power and less than or equal to the maximum output power of the range extender, execute step S7052; when the required power is less than the first range extender output power, execute step S7053; when the required power is less than the minimum output power of the range extender, execute step S7054; when the required power is greater than the minimum output power of the range extender and less than or equal to the third range extender output power, execute step S7055; when the required power is greater than the third range extender output power, execute step S7056.

[0139] S7051. Control the range extender to output at the maximum output power and control the power battery to operate in the power output mode.

[0140] S7052. Control the range extender to output at a first range-extended output power, and control the power battery to operate in a power output mode.

[0141] S7053. Control the range extender to output at the first extended-range output power, and control the power battery to operate in a charging mode.

[0142] S7054, control the power battery to operate in power output mode.

[0143] S7055. Control the range extender to output at the third extended-range output power, and control the power battery to operate in the charging mode.

[0144] S7056. Control the range extender to output at the second extended-range output power, and control the power battery to operate in the charging mode.

[0145] According to the same inventive concept, an embodiment of the present invention provides a control device for a range-extended power system, which is applied to an aircraft. The range-extended power system includes a range extender and a power battery. The control device is used to execute the control method for the range-extended power system in any of the above embodiments. Figure 8 is a block diagram of a control device for a range-extended power system provided by an embodiment of the present invention, with reference to Figure 8 As shown, the control device includes:

[0146] Characteristic operating point establishment module 1: used to establish the extended-range output power of the range extender in at least one characteristic working interval based on the operating conditions of the aircraft.

[0147] Data acquisition module 2: used to acquire the operation data of the aircraft and the power data of the power battery.

[0148] Calculation module 3: used to determine the required power of the aircraft according to the operation data and the power data.

[0149] The range-extending control module 4 is used to adjust the output power of the range extender and the power battery according to the required power and the range-extending output power.

[0150] A control device for a range-extended power system provided in an embodiment of the present invention can achieve the same technical effect as a control method for a range-extended power system provided in the above-mentioned embodiment of the present invention, and will not be described in detail herein.

[0151] According to the same inventive concept, an embodiment of the present invention provides an aviation vehicle, including: an extended-range power system, and a control device for the extended-range power system in the above embodiment.

[0152] An aviation vehicle provided by an embodiment of the present invention can achieve the same technical effect as a control device for an extended-range power system provided by the above-mentioned embodiment of the invention, which will not be described in detail here.

[0153] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for a range-extended power system, characterized in that: Applied to aviation aircraft, the range-extending power system includes a range extender and a power battery, and the control method includes: Based on the operating conditions of the aircraft, establishing the extended-range output power of the range extender in at least one characteristic working interval; Acquiring operation data of the aircraft and power data of the power battery; Determining the required power of the aircraft according to the operation data and the power data; The output power of the range extender and the power battery is adjusted according to the required power and the extended-range output power.

2. The control method according to claim 1, characterized in that: The extended-range output power includes at least one of the following: a first extended-range output power, a second extended-range output power, and a third extended-range output power; Wherein, the first extended-range output power is less than the maximum output power of the range extender; The second extended-range output power is less than the first extended-range output power; The third extended-range output power is less than the second extended-range output power.

3. The control method according to claim 2, characterized in that: The step of establishing the extended-range output power of the range extender in at least one characteristic working interval based on the operating condition of the aircraft includes: Establishing an operating characteristic curve of the range extender based on the operating conditions of the aircraft; Based on the working characteristic curve, a maximum efficient working range of the range extender, a medium efficient working range of the range extender and a minimum efficient working range of the range extender are established; Determine the first extended-range output power according to the maximum efficient working range of the range extender; and / or, Determining the second extended-range output power according to the medium-high efficiency working range of the range extender; and / or, The third extended-range output power is established according to the minimum efficient working interval of the range extender.

4. The control method according to claim 2, characterized in that: Adjusting the output power of the range extender and the power battery according to the required power and the extended-range output power includes: When the required power is greater than the first extended-range output power and less than or equal to the maximum output power of the range extender, the range extender is controlled to output at the first extended-range output power, and the power battery is controlled to operate in a power output mode.

5. The control method according to claim 2, characterized in that: Adjusting the output power of the range extender and the power battery according to the required power and the extended-range output power includes: When the required power is greater than the second extended-range output power and less than or equal to the first extended-range output power, the range extender is controlled to output at the first extended-range output power, and the power battery is controlled to operate in a charging mode.

6. The control method according to claim 2, characterized in that: Adjusting the output power of the range extender and the power battery according to the required power and the extended-range output power includes: When the required power is greater than the third extended-range output power and less than or equal to the second extended-range output power, the range extender is controlled to output at the second extended-range output power, and the power battery is controlled to operate in a charging mode.

7. The control method according to claim 2, characterized in that: Adjusting the output power of the range extender and the power battery according to the required power and the extended-range output power includes: When the required power is greater than the minimum output power of the range extender and less than or equal to the third extended-range output power, the range extender is controlled to output at the third extended-range output power, and the power battery is controlled to operate in a charging mode.

8. The control method according to claim 3, characterized in that: Adjusting the output power of the range extender and the power battery according to the required power and the extended-range output power includes: When the required power is greater than the maximum output power of the range extender, the range extender is controlled to output at the maximum output power, and the power battery is controlled to operate in a power output mode; and / or, When the required power is less than the minimum output power of the range extender, the power battery is controlled to operate in a power output mode.

9. A control device for a range-extended power system, characterized in that: Applied to an aircraft, the range-extending power system comprises a range extender and a power battery, the control device is used to execute the control method of the range-extending power system according to any one of claims 1 to 8, and the control device comprises: A characteristic operating point establishment module, used to establish the extended-range output power of the range extender in at least one characteristic working interval based on the operating conditions of the aircraft; A data acquisition module, used to acquire the operation data of the aircraft and the power data of the power battery; A calculation module, used for determining the required power of the aircraft according to the operation data and the power data; The range-extending control module is used to adjust the output power of the range extender and the power battery according to the required power and the range-extending output power.

10. An aviation vehicle, characterized in that: include: An extended-range power system, and a control device for the extended-range power system as claimed in claim 9.

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