Lightweight airborne self-powered device

Abstract

The application provides a light-weight airborne self-powered device, characterized by comprising: a power generation mechanism for providing power for a load, comprising a damper turbine part and a power generation part, the damper turbine part being connected with the power generation part, for converting the energy of gas into mechanical energy and transmitting the mechanical energy to the power generation part, the power generation part being connected with the load through a bus, for converting the mechanical energy into electric energy; an energy storage part for storing electric energy; and an energy management mechanism arranged on the bus and connected with the energy storage part, for regulating the electric energy provided by the power generation mechanism by using the energy storage part. The light-weight airborne self-powered device provided by the application has the characteristics of simple structure and simple control structure, and can provide stable input electric energy for the load when the external environment changes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aviation power equipment, in particular to a light airborne self-powered device. BACKGROUND

[0002] The working mechanism of the airborne self-powered device is to convert the kinetic energy and potential energy of gas into mechanical energy through a turbine, and then convert the mechanical energy into electrical energy by using a high-speed generator and provide the electrical energy to a task load. The domestic civil and military market has a wide demand for airborne self-powered devices. Whether it is land resource monitoring or geological exploration, a high-power load device needs to be installed on an airplane to complete the task. In the case that the power supply of the airplane cannot provide more power for the device, an additional airborne self-powered device is needed to provide the required electrical energy for the high-power load device. The airborne self-powered device can also be used for field wind power generation. However, the working conditions of the airborne self-powered device in the prior art are relatively complex, the wind speed cannot be kept constant, and especially when the load changes, the output stability of the system is affected.

[0003] The airborne self-powered device in the prior art generally adopts a complex control principle, and has problems of complex control mode, large control error, slow reaction speed, etc. The airborne self-powered device in the prior art also includes a method of directly controlling a damper by a control mechanism, but it is difficult to stably output power. SUMMARY

[0004] The present application is carried out to solve the above problems, and aims to provide a light airborne self-powered device. To this end, the following technical solutions are provided.

[0005] The present application provides a light airborne self-powered device, which has the following characteristics: a power generation mechanism for providing electrical energy for a load, including a damper turbine part and a power generation part, the damper turbine part being connected with the power generation part, for converting the energy of gas into mechanical energy and transmitting the mechanical energy to the power generation part, the power generation part being connected with the load through a bus, for converting the mechanical energy into electrical energy; an energy storage part for storing electrical energy; and an energy management mechanism arranged on the bus and connected with the energy storage part, for regulating the electrical energy provided by the power generation mechanism by using the energy storage part.

[0006] In the light airborne self-powered device provided by the present application, the power generation part can further include a generator, a first converter and a sub-controller, the first converter being connected with the generator, for controlling the duty cycle of the output current of the generator, and the sub-controller being connected with the damper turbine part, for realizing one-level regulation by controlling the mechanical energy output by the damper turbine part, so as to control the electrical energy output by the generator.

[0007] In the light-weight airborne self-powered device provided by the application, the energy management mechanism can further comprise a second converter connected with the energy storage unit, a total controller, and a power module.

[0008] In the light-weight airborne self-powered device provided by the application, the total controller and the sub-controller can be connected through a CAN communication line.

[0009] In the light-weight airborne self-powered device provided by the application, the energy management mechanism can further comprise a bus capacitor arranged between the total controller and the bus, for protecting the total controller.

[0010] In the light-weight airborne self-powered device provided by the application, the first commutator and the second commutator can both be DC-DC bidirectional converters.

[0011] In the light-weight airborne self-powered device provided by the application, the damper turbine unit can comprise a gas flow channel, a damper unit, and a turbine unit, the damper unit being arranged at one end of the gas flow channel and being openable and closable, and the turbine unit being arranged at the other end of the gas flow channel.

[0012] In the light-weight airborne self-powered device provided by the application, the device can further comprise a cooling unit connected with the energy management system, for cooling the total controller.

[0013] In the light-weight airborne self-powered device provided by the application, the relationship among the consumed power of the load, the output power of the energy storage unit, and the output power of the power generation unit can satisfy the following formula:

[0014] P W +UI=P I

[0015] wherein P W is the output power of the power generation unit, U is the bus voltage, I is the output current of the energy storage unit, the product of U and I is the output power of the energy storage unit, and P I is the consumed power of the load.

[0016] In the light-weight airborne self-powered device, when the output power of the power generation unit decreases, the energy management mechanism regulates the energy storage unit so that the current output by the energy storage unit becomes larger, so that the total amount of the electric energy output by the power generation unit and the energy storage unit remains unchanged and is equal to the electric energy consumed by the load; when the output power of the power generation unit increases, the energy management mechanism regulates to store the excess electric energy in the energy storage unit, so that the electric energy output by the power generation unit is equal to the electric energy consumed by the load.

[0017] Effects of the application

[0018] The light-weight airborne self-powered device comprises a power generation mechanism, an energy storage unit and an energy management mechanism. The power generation mechanism can provide electric energy for the load and comprises a wind door turbine unit and a power generation unit. The wind door turbine unit is connected to the power generation unit and can convert the energy of gas into mechanical energy and transmit the mechanical energy to the power generation unit. The power generation unit is connected to the load through a bus and can convert the mechanical energy into electric energy. The energy storage unit can store electric energy and is connected to the energy management mechanism. The energy management mechanism is arranged on the bus and is connected to the energy storage unit. The energy management mechanism can regulate the electric energy provided by the power generation mechanism by using the electric energy of the energy storage unit, so as to provide stable input electric energy for the load.

[0019] Therefore, the light-weight airborne self-powered device has the characteristics of simple structure and simple control structure and can provide stable input electric energy for the load when the external environment changes. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the light-weight airborne self-powered device in the embodiment of the application;

[0021] Figure 2 is a system diagram of the light-weight airborne self-powered device in the embodiment of the application; and

[0022] Figure 3 is a working principle diagram of the light-weight airborne self-powered device in the embodiment of the application. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects of the application easy to understand, the following embodiments in combination with the drawings will specifically describe the light-weight airborne self-powered device.

[0024] <EMBODIMENT>

[0025] Figure 1 is a structural schematic diagram of the light-weight airborne self-powered device in the embodiment of the application.

[0026] Figure 2is a system diagram of a light-weight airborne self-powered device in the embodiment of the present application.

[0027] As shown in Figure 1 and Figure 2 The present application provides a light-weight airborne self-powered device 100, which can be used as an independent power supply of an airplane, can provide stable input power for high-power load equipment, and can also be used for field wind power generation. In the embodiment, the light-weight airborne self-powered device 100 provided by the present application includes a power generation mechanism 10, an energy storage part 20, and an energy management mechanism 30.

[0028] The power generation mechanism 10 can provide power for the load 1 and includes a damper turbine part 11 and a power generation part 12.

[0029] The damper turbine part 11 can convert the energy of gas into mechanical energy and transmit the mechanical energy to the power generation part 12, and includes a gas flow channel 111, a damper unit 112, and a turbine unit 113. In the embodiment, the damper unit 112 is a conventional electrically controlled damper in the prior art, which is arranged at one end of the gas flow channel 111 in an openable and closable manner, and the turbine unit 113 is arranged at the other end of the gas flow channel 111 in a rotatable manner.

[0030] The power generation part 12 is connected to the load 1 through a bus 2 and includes a generator 121, a first converter 122, and a sub-controller 123. The rotor of the generator 121 is connected to the turbine unit 113 and can convert mechanical energy into electrical energy under the driving of the turbine unit 113. The first converter 122 is connected to the generator 121 and can control the duty cycle of the generator output current, where the duty cycle refers to the size and direction of the current. The sub-controller 123 is connected to the generator 121, the first converter 122, and the damper unit 112, can control the total amount of gas flowing into the gas flow channel 111 by controlling the opening and closing angle of the damper unit 112, thereby controlling the mechanical energy output by the damper turbine part 11, achieving primary regulation, and thereby controlling the electrical energy output by the generator 121. In the embodiment, the first converter 122 is a DC-DC bidirectional converter, which is a Buck-Boost circuit.

[0031] The energy storage part 20 can store or output electrical energy and includes a lithium battery pack and a BMS manager. The BMS manager can monitor and prevent the lithium battery pack from overcharging and discharging, thereby preventing damage to the lithium battery pack and affecting the service life.

[0032] The energy management mechanism 30 is electrically connected with the bus 2 and the energy storage unit 20, and comprises a second converter 31, a total controller 32, a bus capacitor 33 and a power module 34. The second converter 31 is connected with the energy storage unit 20, and can control the duty cycle of the output current of the second converter 31, so as to realize secondary regulation. The total controller 32 is connected with the second converter 31, the energy storage unit 20 and the sub-controller 123, and the total controller 32 and the sub-controller 123 keep communication through a CAN communication line, so that the sub-controller 123 can report state information in real time, and the total controller 32 can receive the state information and then issue a regulation command. The state information includes the current size and direction, the rotating speed of the turbine unit 113 and the opening and closing angle of the damper unit 112. The bus capacitor 33 is arranged between the total controller 32 and the bus 2, and can protect the total controller 32 from damage caused by sudden change of current or voltage. The power module 34 is connected with the total controller 32, and can provide starting voltage for the total controller 32. In the embodiment, the second converter 31 is a DC-DC bidirectional converter, which is a Buck-Boost circuit.

[0033] In the embodiment, the light-weight airborne self-powered device 100 further comprises a cooling unit 40 connected with the energy management mechanism 30, which can cool the total controller 32 and prevent the total controller 32 from being overheated, so as to affect the control accuracy and reaction speed of the controller 32.

[0034] Figure 3 is the working principle diagram of the light-weight airborne self-powered device in the embodiment of the application.

[0035] As Figure 3 shown, when the light-weight airborne self-powered device 100 provides stable input power for the load 1, the relationship among the consumed power of the load 1, the output power of the energy storage unit 20 and the output power of the power generation unit 12 satisfies the following formula:

[0036] P W +UI=P I

[0037] wherein P W is the output power of the power generation unit 12, U is the bus voltage, I is the output current of the energy storage unit 20, the product of U and I is the output power of the energy storage unit 20, and P I is the consumed power of the load 1. When the generator 121 keeps the rotor rotating speed of the generator 121 constant by adjusting the opening and closing angle of the damper unit 112, the voltage of the bus 2 is unchanged, and in the embodiment, the rotor rotating speed of the generator 121 is stabilized at 10000 rpm.

[0038] When the energy of the gas that can be converted by the wind door turbine part 11 decreases, the gas received by the wind door unit 112 becomes less, the rotating speed of the turbine unit 113 decreases, and the output power P of the power generation part 12 decreases. W The total controller 32 realizes the first regulation by the sub-controller 123 and the first inverter 122, increases the opening angle of the wind door unit 112, increases the gas received by the wind door unit 112, increases the rotating speed of the turbine unit 113, and increases the output power P of the power generation part 12. W The first regulation and the opening angle of the wind door unit 112 are related to the flow of the gas and cannot change instantaneously, and therefore the total controller 32 realizes the second regulation by the second inverter 31, instantaneously increases the output current I of the energy storage part 20, increases the output power of the energy storage part 20, compensates the output electric energy of the power generation part 12, and increases P W and UI, that is, the electric energy provided by the light-weight airborne self-powered device 100 for the load 1 remains stable and can meet the consumption power P I of the load 1.

[0039] When the energy of the gas that can be converted by the wind door turbine part 11 increases, the gas received by the wind door unit 112 becomes more, the rotating speed of the turbine unit 113 increases, and the output power P of the power generation part 12 increases. W The total controller 32 realizes the first regulation by the sub-controller 123 and the first inverter 122, decreases the opening angle of the wind door unit 112, decreases the gas received by the wind door unit 112, decreases the rotating speed of the turbine unit 113, and decreases the output power P of the power generation part 12. W The total controller 32 realizes the second regulation by the second inverter 31, instantaneously decreases the output current I of the energy storage part 20, decreases the output power of the energy storage part 20, regulates the output electric energy of the power generation part 12, and decreases P W and UI, that is, the electric energy provided by the light-weight airborne self-powered device 100 for the load 1 remains stable and can meet the consumption power P I of the load 1. In the embodiment, the total controller 32 can also transfer the excess electric energy of the power generation part 12 to the energy storage part 20.

[0040] Effects of the embodiment

[0041] The light-weight airborne self-powered device provided by the application comprises a power generation mechanism, an energy storage unit and an energy management mechanism. The power generation mechanism can provide power for the load, comprising a damper turbine unit and a power generation unit. The damper turbine unit is connected with the power generation unit and can convert the energy of gas into mechanical energy and transmit it to the power generation unit. The power generation unit is connected with the load through a bus and can convert the mechanical energy into electrical energy. The energy storage unit can store electrical energy and is connected with the energy management mechanism. The energy management mechanism is arranged on the bus and is connected with the energy storage unit. The energy management mechanism can regulate the electrical energy provided by the power generation mechanism by using the electrical energy of the energy storage unit, thereby providing stable input electrical energy for the load. Therefore, the light-weight airborne self-powered device provided by the application has the characteristics of simple structure and simple control structure, and can provide stable input electrical energy for the load when the external environment changes.

[0042] Further, the sub-controller can realize one-level regulation by controlling the opening and closing angle of the damper unit, and the total controller can realize two-level regulation through the second converter, so that the total electrical energy output by the power generation unit and the energy storage unit remains unchanged, thereby keeping the electrical energy provided for the load stable.

[0043] Further, the total controller and the sub-controller keep communication through the CAN communication line, so that the sub-controller can report the state information in real time, and the total controller can receive the state information and then issue the regulation command.

[0044] The above embodiments are preferred cases of the application and are not used to limit the protection scope of the application.

Claims

1. A lightweight airborne self-powered device, characterized by, The device comprises: a power generation mechanism for providing power for a load, comprising a damper turbine unit and a power generation unit, the damper turbine unit being connected with the power generation unit for converting the energy of gas into mechanical energy and transmitting the mechanical energy to the power generation unit, the power generation unit being connected with the load through a bus for converting the mechanical energy into electric energy; an energy storage unit for storing electric energy; and an energy management mechanism arranged on the bus and connected with the energy storage unit for regulating the electric energy provided by the power generation mechanism by using the energy storage unit, wherein the damper turbine unit comprises a gas flow channel, a damper unit and a turbine unit, the damper unit is arranged at one end of the gas flow channel in an openable and closable manner, the turbine unit is arranged at the other end of the gas flow channel, the power generation unit comprises: a generator; a first converter connected with the generator for controlling the duty cycle of the output current of the generator; and a sub-controller connected with the damper turbine unit for realizing primary regulation by controlling the mechanical energy output by the damper turbine unit, so as to control the electric energy output by the generator, the energy management mechanism comprises: a second converter connected with the energy storage unit for realizing secondary regulation and controlling the duty cycle of the output current of the energy storage unit; and a master controller connected with the sub-controller and the energy storage unit, so that the sub-controller can report state information in real time, and the master controller receives the state information and then issues a regulation command, the relationship among the consumed power of the load, the output power of the energy storage unit and the output power of the power generation unit satisfies the following formula:

2. The light-weight airborne self-powered device according to claim 1, wherein: P W +UI=P I wherein P W is the output power of the power generation section, U is the bus voltage, I is the output current of the energy storage section, the product of U and I is the output power of the energy storage section, P I is the consumption power of the load, When the energy of the gas converted by the damper turbine portion decreases, the output power P W decreases, the total controller increases the opening angle of the damper unit to increase the output power P W by the first converter and the second converter to increase the output power P W so that the consumed power P I of the load remains unchanged, When the energy of the gas converted by the damper turbine part increases, the output power P W increases, the total controller reduces the opening angle of the damper unit to reduce the output power P W by the first converter and the first converter, and instantaneously reduces the output current I to reduce the output power P W by the second converter, so that the consumption power P I of the load remains unchanged. the energy management mechanism further comprises a power supply module. wherein 3. The light-weight airborne self-powered device according to claim 2, wherein: the master controller and the sub-controller are connected through a CAN communication line. wherein 4. The light-weight airborne self-powered device according to claim 2, wherein: the energy management mechanism further comprises a bus capacitor, wherein, the bus capacitor is arranged between the master controller and the bus for protecting the master controller.

5. The light-weight airborne self-powered device according to claim 2, wherein: the first converter and the second converter are both DC-DC bidirectional converters. wherein The device further comprises:

6. The lightweight airborne self-powered device of claim 2, wherein a cooling unit connected with the energy management mechanism for cooling the master controller.

7. The light-weight airborne self-powered device according to claim 1, wherein: when the output power of the power generation unit increases, the energy management mechanism regulates to store the excess electric energy through the energy storage unit, so that the electric energy output by the power generation unit is equal to the electric energy consumed by the load. wherein ​

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