Inspiration electric all-in-one machine controller, unmanned aerial vehicle inspiration electric system and control method

Abstract

The application discloses an integrated controller for starting power generation, a UAV starting power generation system and a control method. The integrated controller for starting power generation comprises a main power circuit, a driving circuit and a control circuit. The control circuit is configured to detect whether the integrated controller for starting power generation is normal when receiving an ignition signal. When the integrated controller for starting power generation is in a normal state, the working mode of the main power circuit is determined according to the state information of an external low-voltage battery and the state information of an airborne high-voltage battery, and the driving circuit is outputted with a corresponding driving signal according to the determined working mode. The main power circuit is configured to be driven by the driving circuit to perform at least one of the following operations: converting direct current into three-phase alternating current to drive the integrated controller for starting power generation; converting three-phase alternating current generated by the integrated controller for starting power generation into high-voltage direct current; converting high-voltage direct current into low-voltage direct current; and converting low-voltage direct current into high-voltage direct current.

Description

Technical Field

[0001] This application relates to the field of electronic and electrical technology, and more particularly to an integrated generator controller, a drone generator system, and a control method. Background Technology

[0002] Traditional drones start their engines (such as...) Figure 1 As shown, when starting up, additional ground equipment is required to provide power. After starting up, it needs to be disconnected and must return to the location of ground support equipment before it can be stopped and started again. The working scenarios are limited, and there are also problems such as complicated operation. Summary of the Invention

[0003] This application provides an integrated generator controller, a drone generator system, and a control method. It can automatically switch between different startup modes to adapt to different startup scenarios. It can start automatically when disconnected from the ground low-voltage power supply, and can also start using the onboard low-voltage battery when the onboard high-voltage battery is not working properly. It provides multiple backup startup methods and provides power generation control for multiple purposes.

[0004] This application provides a heuristic-driven integrated controller for use in unmanned aerial vehicles (UAVs), comprising:

[0005] The integrated controller for the power supply includes a main power circuit, a drive circuit, and a control circuit;

[0006] The drive circuit is configured to drive the main power circuit under the action of the drive signal output by the control circuit.

[0007] The control circuit is configured to detect whether the starter-powered unit is normal when an ignition signal is received; when the starter-powered unit is in normal condition, it determines the operating mode of the main power circuit based on the status information of the external low-voltage battery and the status information of the onboard high-voltage battery, and outputs a corresponding drive signal to the drive circuit according to the determined operating mode.

[0008] The main power circuit is configured to perform at least one of the following operations under the drive of the drive circuit: converting DC power into three-phase AC power to drive the integrated starter generator; converting the three-phase AC power generated by the integrated starter generator into high-voltage DC power; converting the high-voltage DC power into low-voltage DC power; and converting the low-voltage DC power into high-voltage DC power; wherein the DC power includes high-voltage DC power and low-voltage DC power.

[0009] The main power circuit includes connection terminals that are respectively connected to the starter-generator, the onboard high-voltage battery, and the onboard low-voltage battery, as well as an external low-voltage battery interface.

[0010] In one exemplary embodiment, the main power circuit operates in three modes: a first startup mode, a second startup mode, and a third startup mode.

[0011] The operating mode of the main power circuit is determined based on the status information of the external low-voltage battery and the onboard high-voltage battery, including:

[0012] When the connection status of the external low-voltage battery is determined to be connected and in normal condition, the operating mode of the main power circuit is determined to be the first start-up operating mode.

[0013] When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in normal working condition, the main power circuit is set to the second start-up working mode.

[0014] When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in an abnormal working state, the main power circuit is set to the third start-up working mode.

[0015] In one exemplary embodiment, when in the first startup working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the external low-voltage battery into three-phase AC power to drive the starter-generator.

[0016] When in the second start-up working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the onboard high-voltage battery into three-phase AC power to drive the start-up integrated machine.

[0017] When in the third start-up working mode, the main power circuit, driven by the drive circuit, converts the low-voltage DC power generated by the onboard low-voltage battery into high-voltage DC power, and then converts the high-voltage DC power into three-phase AC power to drive the starter-generator.

[0018] In one exemplary embodiment, the control circuit is further configured to determine a corresponding power generation mode based on the determined operating mode of the main power circuit and whether the onboard high-voltage battery is powered on after the integrated power generator generates electricity.

[0019] In one exemplary embodiment, determining a corresponding power generation mode based on the determined operating mode of the main power circuit and whether the onboard high-voltage battery is energized includes:

[0020] When in the first or third start-up working mode, the main power circuit is first controlled according to the first power generation mode; the first power generation mode is to convert the three-phase AC power generated by the generator into high-voltage DC power; when the onboard high-voltage battery is powered on, the main power circuit is then controlled according to the second power generation mode.

[0021] When in the second start-up working mode, the main power circuit is controlled according to the second power generation mode;

[0022] The second power generation mode is to use the high-voltage direct current to charge the airborne high-voltage battery and to convert the high-voltage direct current into low-voltage direct current to charge the airborne low-voltage battery.

[0023] In one exemplary embodiment, the control circuit is further configured to output a corresponding drive signal to the drive circuit according to the third power generation mode when the integrated generator malfunctions and the onboard high-voltage battery is powered on.

[0024] The third power generation mode is to convert the high-voltage DC power generated by the airborne high-voltage battery into low-voltage DC power to charge the airborne low-voltage battery.

[0025] In one exemplary embodiment, the main power circuit includes a motor controller module and a DC-DC module;

[0026] The motor controller module is configured to convert DC power into three-phase AC power to drive the integrated generator; and to convert the three-phase AC power generated by the integrated generator into DC power.

[0027] The DC-DC module is configured to convert high-voltage DC to low-voltage DC and low-voltage DC to high-voltage DC.

[0028] In one exemplary embodiment, the main power circuit further includes an external low-voltage battery anti-reverse module and an airborne low-voltage battery anti-reverse module;

[0029] The external low-voltage battery anti-reverse module is configured to electrically isolate the onboard high-voltage battery and the external low-voltage battery, and to prevent the external low-voltage battery from being connected in reverse.

[0030] The airborne low-voltage battery anti-reverse module is configured to electrically isolate the airborne low-voltage battery and the DC-DC module, and to prevent the airborne low-voltage battery from being connected in reverse.

[0031] In one exemplary embodiment, the motor controller module includes a first capacitor and a three-phase full-bridge inverter sub-circuit;

[0032] The first capacitor is connected in parallel with the three-phase full-bridge inverter sub-circuit;

[0033] The first capacitor is connected to both the onboard high-voltage battery and the external low-voltage battery interface; the three-phase full-bridge inverter sub-circuit is connected to the starter generator.

[0034] In one exemplary embodiment, the DC-DC module includes a second capacitor, a first conversion sub-circuit, a first transformer, a second conversion sub-circuit, a first inductor, and a third capacitor;

[0035] The second capacitor is connected in parallel with the onboard high-voltage battery; the second capacitor is connected in parallel with the external low-voltage battery interface through the external low-voltage battery anti-reverse module;

[0036] The first conversion sub-circuit includes a first transistor, a second transistor, a third transistor, and a fourth transistor; the first terminal of the first transistor is connected in series with the first terminal of the second transistor, and the first terminal of the third transistor is connected in series with the first terminal of the fourth transistor; the second terminal of the first transistor is connected to one end of the second capacitor; the second terminal of the second transistor is connected to the other end of the second capacitor; the first terminal of the first transistor and the first terminal of the third transistor are respectively connected to the primary winding of the first transformer.

[0037] The second conversion sub-circuit includes a fifth transistor, a sixth transistor, a seventh transistor, and an eighth transistor; the first terminal of the fifth transistor is connected in series with the first terminal of the sixth transistor, and the first terminal of the seventh transistor is connected in series with the first terminal of the eighth transistor; the first terminals of the fifth transistor and the seventh transistor are respectively connected to the secondary winding of the first transformer.

[0038] The second terminal of the fifth transistor and the second terminal of the seventh transistor are respectively connected to the first terminal of the first inductor; the second terminal of the first inductor is connected to the first terminal of the third capacitor; the second terminal of the sixth transistor and the second terminal of the eighth transistor are respectively connected to the second terminal of the third capacitor.

[0039] The first terminal of the third capacitor is connected to the positive terminal of the airborne low-voltage battery through the airborne low-voltage battery anti-reverse module; the second terminal of the third capacitor is connected to the negative terminal of the airborne low-voltage battery.

[0040] In one exemplary embodiment, the airborne low-voltage battery anti-reverse module includes two transistors connected in series;

[0041] The external low-voltage battery anti-reverse module includes two transistors connected in series.

[0042] In one exemplary embodiment, the control circuit includes a communication interface;

[0043] The communication interface is used to communicate with the UAV flight controller, engine controller, and high-voltage battery controller respectively.

[0044] This application proposes a drone-inspired electric system, comprising:

[0045] Heated generator integrated controller, heated generator integrated machine, airborne high voltage battery, airborne low voltage battery, engine controller, airborne high voltage battery controller, UAV flight controller;

[0046] The starter-powered all-in-one controller is connected to the starter-powered all-in-one machine, the onboard high-voltage battery, and the onboard low-voltage battery, respectively.

[0047] The integrated controller for the power supply includes a main power circuit, a drive circuit, and a control circuit;

[0048] The drive circuit is configured to drive the main power circuit under the action of the drive signal output by the control circuit.

[0049] The control circuit is configured to detect whether the starter-powered unit is normal when an ignition signal is received; when the starter-powered unit is in normal condition, it determines the operating mode of the main power circuit based on the status information of the external low-voltage battery and the status information of the onboard high-voltage battery, and outputs a corresponding drive signal to the drive circuit according to the determined operating mode.

[0050] The main power circuit is configured to perform at least one of the following operations under the drive of the drive circuit: converting DC power into three-phase AC power to drive the integrated starter generator; converting the three-phase AC power generated by the integrated starter generator into high-voltage DC power; converting the high-voltage DC power into low-voltage DC power; and converting the low-voltage DC power into high-voltage DC power; wherein the DC power includes high-voltage DC power and low-voltage DC power.

[0051] The main power circuit includes connection terminals that are respectively connected to the starter-generator, the onboard high-voltage battery, and the onboard low-voltage battery, as well as an external low-voltage battery interface.

[0052] In one exemplary embodiment, the main power circuit operates in three modes: a first startup mode, a second startup mode, and a third startup mode.

[0053] The operating mode of the main power circuit is determined based on the status information of the external low-voltage battery and the onboard high-voltage battery, including:

[0054] When the connection status of the external low-voltage battery is determined to be connected and in normal condition, the operating mode of the main power circuit is determined to be the first start-up operating mode.

[0055] When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in normal working condition, the main power circuit is set to the second start-up working mode.

[0056] When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in an abnormal working state, the main power circuit is set to the third start-up working mode.

[0057] In one exemplary embodiment, when in the first startup working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the external low-voltage battery into three-phase AC power to drive the starter-generator.

[0058] When in the second start-up working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the onboard high-voltage battery into three-phase AC power to drive the start-up integrated machine.

[0059] When in the third start-up working mode, the main power circuit, driven by the drive circuit, converts the low-voltage DC power generated by the onboard low-voltage battery into high-voltage DC power, and then converts the high-voltage DC power into three-phase AC power to drive the starter-generator.

[0060] In one exemplary embodiment, the control circuit is further configured to determine a corresponding power generation mode based on the determined operating mode of the main power circuit and whether the onboard high-voltage battery is powered on after the integrated power generator generates electricity.

[0061] In one exemplary embodiment, determining a corresponding power generation mode based on the determined operating mode of the main power circuit and whether the onboard high-voltage battery is energized includes:

[0062] When in the first or third start-up working mode, the main power circuit is first controlled according to the first power generation mode; the first power generation mode is to convert the three-phase AC power generated by the generator into high-voltage DC power; when the onboard high-voltage battery is powered on, the main power circuit is then controlled according to the second power generation mode.

[0063] When in the second start-up working mode, the main power circuit is controlled according to the second power generation mode;

[0064] The second power generation mode is to use the high-voltage direct current to charge the airborne high-voltage battery and to convert the high-voltage direct current into low-voltage direct current to charge the airborne low-voltage battery.

[0065] In one exemplary embodiment, the control circuit is further configured to output a corresponding drive signal to the drive circuit according to the third power generation mode when the integrated generator malfunctions and the onboard high-voltage battery is powered on.

[0066] The third power generation mode is to convert the high-voltage DC power generated by the airborne high-voltage battery into low-voltage DC power to charge the airborne low-voltage battery.

[0067] In one exemplary embodiment, the main power circuit includes a motor controller module and a DC-DC module;

[0068] The motor controller module is configured to convert DC power into three-phase AC power to drive the integrated generator; and to convert the three-phase AC power generated by the integrated generator into DC power.

[0069] The DC-DC module is configured to convert high-voltage DC to low-voltage DC and low-voltage DC to high-voltage DC.

[0070] In one exemplary embodiment, the main power circuit further includes an external low-voltage battery anti-reverse module and an airborne low-voltage battery anti-reverse module;

[0071] The external low-voltage battery anti-reverse module is configured to electrically isolate the onboard high-voltage battery and the external low-voltage battery, and to prevent the external low-voltage battery from being connected in reverse.

[0072] The airborne low-voltage battery anti-reverse module is configured to electrically isolate the airborne low-voltage battery and the DC-DC module, and to prevent the airborne low-voltage battery from being connected in reverse.

[0073] In one exemplary embodiment, the motor controller module includes a first capacitor and a three-phase full-bridge inverter sub-circuit;

[0074] The first capacitor is connected in parallel with the three-phase full-bridge inverter sub-circuit;

[0075] The first capacitor is connected to both the onboard high-voltage battery and the external low-voltage battery interface; the three-phase full-bridge inverter sub-circuit is connected to the starter generator.

[0076] In one exemplary embodiment, the DC-DC module includes a second capacitor, a first conversion sub-circuit, a first transformer, a second conversion sub-circuit, a first inductor, and a third capacitor;

[0077] The second capacitor is connected in parallel with the onboard high-voltage battery; the second capacitor is connected in parallel with the external low-voltage battery interface through the external low-voltage battery anti-reverse module;

[0078] The first conversion sub-circuit includes a first transistor, a second transistor, a third transistor, and a fourth transistor; the first terminal of the first transistor is connected in series with the first terminal of the second transistor, and the first terminal of the third transistor is connected in series with the first terminal of the fourth transistor; the second terminal of the first transistor is connected to one end of the second capacitor; the second terminal of the second transistor is connected to the other end of the second capacitor; the first terminal of the first transistor and the first terminal of the third transistor are respectively connected to the primary winding of the first transformer.

[0079] The second conversion sub-circuit includes a fifth transistor, a sixth transistor, a seventh transistor, and an eighth transistor; the first terminal of the fifth transistor is connected in series with the first terminal of the sixth transistor, and the first terminal of the seventh transistor is connected in series with the first terminal of the eighth transistor; the first terminals of the fifth transistor and the seventh transistor are respectively connected to the secondary winding of the first transformer.

[0080] The second terminal of the fifth transistor and the second terminal of the seventh transistor are respectively connected to the first terminal of the first inductor; the second terminal of the first inductor is connected to the first terminal of the third capacitor; the second terminal of the sixth transistor and the second terminal of the eighth transistor are respectively connected to the second terminal of the third capacitor.

[0081] The first terminal of the third capacitor is connected to the positive terminal of the airborne low-voltage battery through the airborne low-voltage battery anti-reverse module; the second terminal of the third capacitor is connected to the negative terminal of the airborne low-voltage battery.

[0082] In one exemplary embodiment, the airborne low-voltage battery anti-reverse module includes two transistors connected in series;

[0083] The external low-voltage battery anti-reverse module includes two transistors connected in series.

[0084] In one exemplary embodiment, the control circuit includes a communication interface;

[0085] The communication interface is used to communicate with the UAV flight controller, engine controller, and high-voltage battery controller respectively.

[0086] The starter-generator is configured to start and generate electricity using power from a ground-based low-voltage starter battery, an onboard high-voltage battery, or an onboard low-voltage battery under the control of the starter-generator controller.

[0087] The integrated generator controller is also connected to the UAV flight controller, engine controller and airborne high-voltage battery controller respectively.

[0088] The drone flight controller is used to obtain the drone's operating status and the status of its onboard low-voltage battery.

[0089] The engine controller is used to acquire the engine's operating status, torque, and speed.

[0090] The high-voltage battery controller is used to acquire the operating status of the high-voltage battery and the status of the pre-charge relay and main relay inside the high-voltage battery.

[0091] This application proposes a control method, including:

[0092] When an ignition signal is received, check whether the starter-generator is functioning properly;

[0093] When the integrated power generator is in normal condition, the operating mode of the main power circuit is determined based on the status information of the external battery and the status information of the onboard high-voltage battery. The main power circuit is then controlled to start the integrated power generator and generate electricity according to the determined operating mode. After the integrated power generator generates electricity, the corresponding power generation mode is determined based on the determined operating mode of the main power circuit and whether the onboard high-voltage battery is powered on. The main power circuit is then controlled according to the determined power generation mode.

[0094] In one exemplary embodiment, the main power circuit operates in three modes: a first startup mode, a second startup mode, and a third startup mode.

[0095] The operating mode of the main power circuit is determined based on the external battery connection status information and the onboard high-voltage battery status information, including:

[0096] When the connection status of the external low-voltage battery is determined to be "connected", the operating mode of the main power circuit is determined to be the first start-up operating mode.

[0097] When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in normal working condition, the main power circuit is set to the second start-up working mode.

[0098] When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in an abnormal working state, the main power circuit is set to the third start-up working mode.

[0099] In one exemplary embodiment, when in the first startup working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the external low-voltage battery into three-phase AC power to drive the starter-generator.

[0100] When in the second start-up working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the onboard high-voltage battery into three-phase AC power to drive the start-up integrated machine.

[0101] When in the third start-up working mode, the main power circuit, driven by the drive circuit, converts the low-voltage DC power generated by the onboard low-voltage battery into high-voltage DC power, and then converts the high-voltage DC power into three-phase AC power to drive the starter-generator.

[0102] In one exemplary embodiment, determining a corresponding power generation mode based on the determined operating mode of the main power circuit and whether the onboard high-voltage battery is energized includes:

[0103] When in the first or third start-up working mode, the main power circuit is first controlled according to the first power generation mode; the first power generation mode is to convert the three-phase AC power generated by the generator into high-voltage DC power; when the onboard high-voltage battery is powered on, the main power circuit is then controlled according to the second power generation mode.

[0104] When in the second start-up working mode, the main power circuit is controlled according to the second power generation mode;

[0105] The second power generation mode is to use the high-voltage direct current to charge the airborne high-voltage battery and to convert the high-voltage direct current into low-voltage direct current to charge the airborne low-voltage battery.

[0106] In one exemplary embodiment, when the integrated generator malfunctions and the onboard high-voltage battery is already powered on, the main power circuit is controlled according to the third power generation mode.

[0107] The third power generation mode is to convert the high-voltage DC power generated by the airborne high-voltage battery into low-voltage DC power to charge the airborne low-voltage battery.

[0108] This application has the following advantages:

[0109] At least one embodiment of this application automatically switches between different startup operating modes to adapt to different startup operating scenarios. It can start automatically when disconnected from the ground low-voltage power supply, and can also start using the onboard low-voltage battery when the onboard high-voltage battery is not working properly, providing multiple backup startup methods. It also provides power generation control for multiple purposes.

[0110] In one implementation of this application, different circuits are deeply integrated for different high and low voltage start-up controls and power generation controls.

[0111] In one implementation of this application, since a high-voltage battery is used, high-voltage safety issues are involved, and high and low voltage electrical isolation must be performed. In addition, the power supplies of various modes also need to be isolated from each other to prevent backflow.

[0112] Of course, any product implementing this application does not necessarily need to achieve all of the advantages described above at the same time.

[0113] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. Other advantages of this application can be realized and obtained by means of the solutions described in the description and the accompanying drawings. Attached Figure Description

[0114] The accompanying drawings are used to provide an understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0115] Figure 1 A schematic diagram of an existing heuristic power system;

[0116] Figure 2 This is a schematic diagram of the heuristic-driven integrated controller according to an embodiment of this application;

[0117] Figure 3 This is a schematic diagram of the unmanned aerial vehicle (UAV) heuristic system according to an embodiment of this application;

[0118] Figure 4 This is a schematic diagram of an unmanned aerial vehicle (UAV) heuristic system provided in an example embodiment of this application;

[0119] Figure 5 This is a circuit block diagram of an integrated power supply controller provided in an example embodiment of this application;

[0120] Figure 6 This is a block diagram of the main power circuit provided in an example embodiment of this application;

[0121] Figure 7 This is a flowchart illustrating the control process of an integrated power supply unit provided in an example embodiment of this application.

[0122] Figure 8 This is a schematic diagram of energy transfer in the first startup operating mode of an example embodiment of this application;

[0123] Figure 9 This is a schematic diagram of energy transfer in the second startup operating mode of an example embodiment of this application;

[0124] Figure 10 This is a schematic diagram of energy transfer in the third startup operating mode of an example embodiment of this application;

[0125] Figure 11 This is a schematic diagram of energy transmission in the first power generation operating mode of an example embodiment of this application;

[0126] Figure 12 This is a schematic diagram of energy transmission in the second power generation operating mode of an example embodiment of this application;

[0127] Figure 13 This is a schematic diagram of energy transmission in the third power generation operating mode of an example embodiment of this application. Detailed Implementation

[0128] Figure 2 This is a schematic diagram of the heuristic-driven integrated controller according to an embodiment of this application, as shown below. Figure 2As shown, the integrated power controller includes a main power circuit, a drive circuit, and a control circuit;

[0129] The drive circuit is configured to drive the main power circuit under the action of the drive signal output by the control circuit.

[0130] The control circuit is configured to detect whether the starter-powered unit is normal when an ignition signal is received; when the starter-powered unit is in normal condition, it determines the operating mode of the main power circuit based on the status information of the external low-voltage battery and the status information of the onboard high-voltage battery, and outputs a corresponding drive signal to the drive circuit according to the determined operating mode.

[0131] The main power circuit is configured to perform at least one of the following operations under the drive of the drive circuit: converting DC power into three-phase AC power to drive the integrated starter generator; converting the three-phase AC power generated by the integrated starter generator into high-voltage DC power; converting the high-voltage DC power into low-voltage DC power; and converting the low-voltage DC power into high-voltage DC power; wherein the DC power includes high-voltage DC power and low-voltage DC power.

[0132] The main power circuit includes connection terminals that are respectively connected to the starter-generator, the onboard high-voltage battery, and the onboard low-voltage battery, as well as an external low-voltage battery interface.

[0133] The starter-driven integrated machine includes a motor.

[0134] The starter controller performs a self-check of internal information, such as power supply voltage, high-voltage side voltage and current, and low-voltage side voltage and current, and then determines whether a fault exists. Similarly, the engine controller performs a self-check of engine information and provides feedback on whether the current status is normal.

[0135] The drive circuit can also collect and send the voltage and current information of the UAV's onboard high-voltage side, the voltage and current information of the three-phase AC side, and the voltage and current information of the onboard low-voltage side to the control circuit.

[0136] The control circuit can also acquire information from the UAV flight controller, engine controller, and high-voltage battery controller.

[0137] The external low-voltage battery interface typically uses a quick-connect plug, and the external low-voltage battery will disconnect after startup.

[0138] In one exemplary embodiment, the main power circuit operates in three modes: a first startup mode, a second startup mode, and a third startup mode.

[0139] The operating mode of the main power circuit is determined based on the status information of the external low-voltage battery and the onboard high-voltage battery, including:

[0140] When the connection status of the external low-voltage battery is determined to be connected and in normal condition, the operating mode of the main power circuit is determined to be the first start-up operating mode.

[0141] When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in normal working condition, the main power circuit is set to the second start-up working mode.

[0142] When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in an abnormal working state, the main power circuit is set to the third start-up working mode.

[0143] In one exemplary embodiment, when in the first startup working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the external low-voltage battery into three-phase AC power to drive the starter-generator.

[0144] When in the second start-up working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the onboard high-voltage battery into three-phase AC power to drive the start-up integrated machine.

[0145] When in the third start-up working mode, the main power circuit, driven by the drive circuit, converts the low-voltage DC power generated by the onboard low-voltage battery into high-voltage DC power, and then converts the high-voltage DC power into three-phase AC power to drive the starter-generator.

[0146] In one exemplary embodiment, the control circuit is further configured to determine a corresponding power generation mode based on the determined operating mode of the main power circuit and whether the onboard high-voltage battery is powered on after the integrated power generator generates electricity.

[0147] In one exemplary embodiment, determining a corresponding power generation mode based on the determined operating mode of the main power circuit and whether the onboard high-voltage battery is energized includes:

[0148] When in the first or third start-up working mode, the main power circuit is first controlled according to the first power generation mode; the first power generation mode is to convert the three-phase AC power generated by the generator into high-voltage DC power; when the onboard high-voltage battery is powered on, the main power circuit is then controlled according to the second power generation mode.

[0149] When in the second start-up working mode, the main power circuit is controlled according to the second power generation mode;

[0150] The second power generation mode is to use the high-voltage direct current to charge the airborne high-voltage battery and to convert the high-voltage direct current into low-voltage direct current to charge the airborne low-voltage battery.

[0151] To power up the airborne high-voltage battery, a power-up command needs to be given to the airborne high-voltage battery (this command can be given by the UAV flight controller or the heuristic power supply controller; in this embodiment, the power-up command is given by the heuristic power supply controller). The high-voltage battery will close the pre-charge circuit and power up through the pre-charge circuit. The pre-charge is completed by checking the voltage on the airborne high-voltage side. Once completed, the pre-charge relay is disconnected and the main relay is closed, and the high-voltage battery is powered up.

[0152] In one exemplary embodiment, the control circuit is further configured to output a corresponding drive signal to the drive circuit according to the third power generation mode when the integrated generator malfunctions and the onboard high-voltage battery is powered on.

[0153] The third power generation mode is to convert the high-voltage DC power generated by the airborne high-voltage battery into low-voltage DC power to charge the airborne low-voltage battery.

[0154] In one exemplary embodiment, the main power circuit includes a motor controller module and a DC-DC module;

[0155] The motor controller module is configured to convert DC power into three-phase AC power to drive the integrated generator; and to convert the three-phase AC power generated by the integrated generator into DC power.

[0156] The DC-DC module is configured to convert high-voltage DC to low-voltage DC and low-voltage DC to high-voltage DC.

[0157] In one exemplary embodiment, the main power circuit further includes an external low-voltage battery anti-reverse module and an airborne low-voltage battery anti-reverse module;

[0158] The external low-voltage battery anti-reverse module is configured to electrically isolate the onboard high-voltage battery and the external low-voltage battery, and to prevent the external low-voltage battery from being connected in reverse.

[0159] The airborne low-voltage battery anti-reverse module is configured to electrically isolate the airborne low-voltage battery and the DC-DC module, and to prevent the airborne low-voltage battery from being connected in reverse.

[0160] In one exemplary embodiment, the motor controller module includes a first capacitor and a three-phase full-bridge inverter sub-circuit;

[0161] The first capacitor is connected in parallel with the three-phase full-bridge inverter sub-circuit;

[0162] The first capacitor is connected to both the onboard high-voltage battery and the external low-voltage battery interface; the three-phase full-bridge inverter sub-circuit is connected to the starter generator.

[0163] In one exemplary embodiment, the DC-DC module includes a second capacitor, a first conversion sub-circuit, a first transformer, a second conversion sub-circuit, a first inductor, and a third capacitor;

[0164] The second capacitor is connected in parallel with the onboard high-voltage battery; the second capacitor is connected in parallel with the external low-voltage battery interface through the external low-voltage battery anti-reverse module;

[0165] The first conversion sub-circuit includes a first transistor, a second transistor, a third transistor, and a fourth transistor; the first terminal of the first transistor is connected in series with the first terminal of the second transistor, and the first terminal of the third transistor is connected in series with the first terminal of the fourth transistor; the second terminal of the first transistor is connected to one end of the second capacitor; the second terminal of the second transistor is connected to the other end of the second capacitor; the first terminal of the first transistor and the first terminal of the third transistor are respectively connected to the primary winding of the first transformer.

[0166] The second conversion sub-circuit includes a fifth transistor, a sixth transistor, a seventh transistor, and an eighth transistor; the first terminal of the fifth transistor is connected in series with the first terminal of the sixth transistor, and the first terminal of the seventh transistor is connected in series with the first terminal of the eighth transistor; the first terminals of the fifth transistor and the seventh transistor are respectively connected to the secondary winding of the first transformer.

[0167] The second terminal of the fifth transistor and the second terminal of the seventh transistor are respectively connected to the first terminal of the first inductor; the second terminal of the first inductor is connected to the first terminal of the third capacitor; the second terminal of the sixth transistor and the second terminal of the eighth transistor are respectively connected to the second terminal of the third capacitor.

[0168] The first terminal of the third capacitor is connected to the positive terminal of the airborne low-voltage battery through the airborne low-voltage battery anti-reverse module; the second terminal of the third capacitor is connected to the negative terminal of the airborne low-voltage battery.

[0169] In one exemplary embodiment, the airborne low-voltage battery anti-reverse module includes two transistors connected in series;

[0170] The external low-voltage battery anti-reverse module includes two transistors connected in series.

[0171] In one exemplary embodiment, the control circuit includes a communication interface;

[0172] The communication interface is used to communicate with the UAV flight controller, engine controller, and high-voltage battery controller respectively.

[0173] In one exemplary embodiment, the three-phase full-bridge inverter sub-circuit consists of six power switching devices.

[0174] This application's embodiments automatically switch between different startup operating modes to adapt to various startup scenarios. It can automatically start when disconnected from ground-based low-voltage power, and can also start using the onboard low-voltage battery when the onboard high-voltage battery malfunctions, providing multiple backup startup methods. It also offers power generation control for various purposes. Furthermore, it deeply integrates different circuits for different high and low voltage startup controls and power generation controls.

[0175] Figure 3 This is a schematic diagram of a drone power supply system according to an embodiment of this application. The drone power supply system includes a power supply controller, a power supply unit, an onboard high-voltage battery, an onboard low-voltage battery, an engine controller, an onboard high-voltage battery controller, and a drone flight controller.

[0176] The starter-powered all-in-one controller is connected to the starter-powered all-in-one machine, the onboard high-voltage battery, and the onboard low-voltage battery, respectively.

[0177] The controller for the integrated power supply is the aforementioned controller;

[0178] The starter-generator is configured to start and generate electricity using power from a ground-based low-voltage starter battery, an onboard high-voltage battery, or an onboard low-voltage battery under the control of the starter-generator controller.

[0179] The integrated generator controller is also connected to the UAV flight controller, engine controller and airborne high-voltage battery controller respectively.

[0180] The drone flight controller is used to obtain the drone's operating status and the status of its onboard low-voltage battery.

[0181] The engine controller is used to acquire the engine's operating status, torque, and speed.

[0182] The high-voltage battery controller is used to acquire the operating status of the high-voltage battery and the status of the pre-charge relay and main relay inside the high-voltage battery.

[0183] It should be noted that the drone flight controller issues the startup request, and the status of the onboard low-voltage battery is used to determine whether the low-voltage battery is normal and whether it can be used to start the drone.

[0184] Throughout the startup process, the engine's operating state switches between states such as unignited, ignited, and generator (example only). The starter-generator controller needs to obtain the engine's operating state as a judgment condition and for verification. During startup, the starter-generator controller controls the motor to the required torque and speed to start the engine, requiring engine speed verification. After startup, when entering generator operation, the starter motor controller controls the motor to the required torque to generate electricity, requiring engine torque and speed verification.

[0185] Throughout the startup process, it is necessary to determine whether the high-voltage battery is working properly and without faults, and the high-voltage battery voltage is also required for verification.

[0186] Regarding the relay, because directly energizing a high-voltage battery would generate a large instantaneous current in the circuit, potentially damaging components, a pre-charge circuit is required. This means that upon power-up, the pre-charge relay is first closed, allowing the high-voltage battery to be energized through the pre-charge circuit. Once pre-charging is complete, the pre-charge relay is opened, and the main relay closes, completing the energization of the high-voltage battery. This part of the circuit is typically located inside the high-voltage battery.

[0187] The drone starter-generating system of this application provides three start-up modes for the integrated starter-generator, which automatically switch between the three modes. The power supplies for the three start-up modes are isolated from each other, and the high and low voltage start-up control and power generation control are deeply integrated. It provides a special-purpose power generation mode, which can maintain the operation of the rest of the drone's equipment for a longer period of time when the drone engine or the integrated starter-generator fails.

[0188] The integrated start-up controller combines a motor controller and a DC-DC converter. The motor controller can operate bidirectionally over a very wide operating voltage range, adapting to power supply voltages from 24V to 110V. The DC-DC converter can also operate bidirectionally, converting the onboard low-voltage battery into high-voltage electricity. This enables three different start-up modes.

[0189] The integrated starter controller communicates and interacts with the UAV flight controller, engine controller, and high-voltage battery controller, receiving work commands and battery status in real time, while also detecting power connection status in real time. Based on system status and priority settings, it selects the start-up working mode.

[0190] The starter-generator controller consists of a motor controller, a DC-DC converter, and corresponding reverse connection protection circuits. A reverse connection and reverse current protection circuit is installed between the motor controller and the ground-based low-voltage starting battery. The DC-DC converter uses a bidirectional isolation topology, and a reverse connection and reverse current protection circuit is also installed between the DC-DC converter and the onboard low-voltage battery.

[0191] The integrated controller for the starter motor consists of a motor controller, a DC-DC converter, and corresponding anti-reverse circuits. The drive circuits and control circuits of each component are integrated on a single circuit board, and all sub-module circuits are controlled by a single control circuit, achieving deep integration.

[0192] When the drone's engine or starter-emitter malfunctions, the drone can land using energy from its onboard high-voltage battery. Simultaneously, the energy from the onboard high-voltage battery can be converted into low voltage by the DC-DC converter within the starter-emitter controller to power the onboard low-voltage battery, maintaining low-voltage power supply for an extended period to sustain the drone's data storage and signal transmission functions, facilitating rescue or other special applications.

[0193] This application provides a control method applied to the aforementioned integrated controller for a starter motor. The method includes:

[0194] When an ignition signal is received, check whether the starter-generator is functioning properly;

[0195] When the integrated power generator is in normal condition, the operating mode of the main power circuit is determined based on the status information of the external battery and the status information of the onboard high-voltage battery. The main power circuit is then controlled to start the integrated power generator and generate electricity according to the determined operating mode. After the integrated power generator generates electricity, the corresponding power generation mode is determined based on the determined operating mode of the main power circuit and whether the onboard high-voltage battery is powered on. The main power circuit is then controlled according to the determined power generation mode.

[0196] After entering the power generation mode, the integrated generator controller can analyze the direct-axis and quadrature-axis currents based on the three-phase currents of the motor, and determine whether power generation has started based on the direction of the current.

[0197] In one exemplary embodiment, the main power circuit operates in three modes: a first startup mode, a second startup mode, and a third startup mode.

[0198] The operating mode of the main power circuit is determined based on the external battery connection status information and the onboard high-voltage battery status information, including:

[0199] When the connection status of the external low-voltage battery is determined to be "connected", the operating mode of the main power circuit is determined to be the first start-up operating mode.

[0200] When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in normal working condition, the main power circuit is set to the second start-up working mode.

[0201] When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in an abnormal working state, the main power circuit is set to the third start-up working mode.

[0202] In one exemplary embodiment, when in the first startup working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the external low-voltage battery into three-phase AC power to drive the starter-generator.

[0203] When in the second start-up working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the onboard high-voltage battery into three-phase AC power to drive the start-up integrated machine.

[0204] When in the third start-up working mode, the main power circuit, driven by the drive circuit, converts the low-voltage DC power generated by the onboard low-voltage battery into high-voltage DC power, and then converts the high-voltage DC power into three-phase AC power to drive the starter-generator.

[0205] In one exemplary embodiment, when in the first startup operating mode or the third startup operating mode, the main power circuit is first controlled according to the first power generation mode; the first power generation mode is to convert the three-phase AC power generated by power generation into high-voltage DC power; when the airborne high-voltage battery is powered on, the main power circuit is then controlled according to the second power generation mode.

[0206] When in the second start-up working mode, the main power circuit is controlled according to the second power generation mode;

[0207] The second power generation mode is to use the high-voltage direct current to charge the airborne high-voltage battery and to convert the high-voltage direct current into low-voltage direct current to charge the airborne low-voltage battery.

[0208] In one exemplary embodiment, when the integrated generator malfunctions and the onboard high-voltage battery is already powered on, the main power circuit is controlled according to the third power generation mode.

[0209] The third power generation mode is to convert the high-voltage DC power generated by the airborne high-voltage battery into low-voltage DC power to charge the airborne low-voltage battery.

[0210] The following specific examples illustrate the aforementioned integrated generator controller, UAV generator system, and control method.

[0211] Figure 4 This illustration shows a drone power supply system according to an embodiment of this application. The drone power supply system includes a power supply controller, a power supply unit, an onboard high-voltage battery, and an onboard low-voltage battery. The onboard high-voltage user equipment and onboard low-voltage electrical equipment shown in the figure are not part of the drone power supply system; they are merely used to illustrate connections. The low-voltage starting battery in the ground equipment is an external device, not part of the onboard equipment, and is optional, not affecting the operation of the drone power supply system.

[0212] The drone's power generation system also includes a drone flight controller, an engine controller, and an onboard high-voltage battery controller.

[0213] The integrated starter-generator controller is connected to the UAV flight controller, engine controller, and airborne high-voltage battery controller, respectively; the integrated starter-generator controller, UAV flight controller, engine controller, and airborne high-voltage battery controller exchange information via CAN communication or other communication methods.

[0214] The drone flight controller is used to obtain the drone's operating status and the status of its onboard low-voltage battery.

[0215] The engine controller is used to acquire the engine's operating status, torque, and speed.

[0216] The high-voltage battery controller is used to acquire the operating status of the high-voltage battery and the status of the pre-charge relay and main relay inside the high-voltage battery.

[0217] The integrated generator controller is used to acquire the onboard high-voltage side voltage and current, the external low-voltage side voltage and current, the connection status of the external low-voltage side battery, and the three-phase AC side current. Based on the information provided by the UAV flight controller, engine controller, and high-voltage battery controller, it determines the current working mode and controls the motor controller circuit (A) (corresponding to the motor controller module), the DC-DC circuit (B) (corresponding to the DC-DC module), the external low-voltage battery anti-reverse module (C), and the onboard low-voltage battery anti-reverse module (D) to operate in different states.

[0218] The circuit block diagram of the integrated power supply controller is as follows: Figure 5 As shown. Figure 5 As shown, the integrated starter controller circuit, in addition to the main power section, also includes a drive circuit and a control circuit. The drive circuit can drive power switching devices through PWM (Pulse Width Modulation) waves and can also sample information such as voltage and current on the circuit. Specifically, drive signal 1 can drive the external low-voltage battery reverse protection module (C), drive signal 2 can drive the DC-DC circuit (B), drive signal 3 can drive the motor controller circuit (A), and drive signal 4 can drive the onboard low-voltage battery reverse protection module (D). Sampling signal 1 can collect information such as voltage and current on the onboard high-voltage side, sampling signal 2 can collect information such as voltage and current on the three-phase AC side, and sampling signal 3 can collect information such as voltage and current on the onboard low-voltage side.

[0219] The control circuit consists of a power supply circuit, a sampling and conditioning circuit, a microprocessor circuit, and a communication circuit. Its main function is to acquire information such as the onboard high-voltage side voltage and current, the external low-voltage side voltage and current, the connection status of the external low-voltage side battery, and the three-phase AC side current based on various sampled signals, as well as information obtained through communication interaction from the UAV flight controller, engine controller, and high-voltage battery controller. This allows it to determine the current operating mode and control the output drive signal. The low-voltage external interfaces of the integrated starter-generator controller mainly include communication connection, low-voltage power supply, and external low-voltage battery connection status detection.

[0220] Figure 6 The main power section of the integrated starter controller shown is connected to the onboard high-voltage battery, the external low-voltage battery, the three-phase line of the integrated starter, and the onboard low-voltage battery, respectively. The main power section of the integrated starter controller consists of a motor controller circuit (A), a DC-DC circuit (B), an external low-voltage battery reverse protection module (C), and an onboard low-voltage battery reverse protection module (D).

[0221] The motor controller circuit (A) consists of a high-voltage DC capacitor (C1) and power switching devices (Q1 to Q6) forming a three-phase full-bridge inverter circuit. It can convert DC into three-phase AC to drive the integrated generator, and can also convert the three-phase AC generated by the integrated generator into DC.

[0222] The DC-DC converter circuit (B) consists of a high-voltage DC capacitor (C2), power switching devices (Q7 to Q14), a transformer (T1), a filter inductor (L1), and a low-voltage DC capacitor (C3), forming a bidirectional DC-DC converter circuit. It can convert high-voltage DC to low-voltage DC for use by onboard low-voltage equipment, and can also convert onboard low-voltage battery power into high-voltage DC. Simultaneously, the presence of the transformer (T1) provides electrical isolation between the high-voltage and low-voltage sides, avoiding high-voltage safety issues.

[0223] The external low-voltage battery reverse connection protection module (C) is composed of power switching devices (Q15, Q16) and plays the role of preventing reverse connection and reverse charging. When the airborne high-voltage battery and the external low-voltage battery are present at the same time, they can be electrically isolated from each other by working with the pre-charging circuit and high-voltage contactor inside the airborne high-voltage battery.

[0224] The airborne low-voltage battery reverse polarity protection module (D) consists of power switching devices (Q17, Q18) and serves to prevent reverse connection and reverse current leakage. When the airborne low-voltage battery is connected to the integrated starter controller, it can reduce static current consumption and prevent the airborne low-voltage battery from being drained. At the same time, it can protect the circuit from damage if the positive and negative terminals are reversed.

[0225] The control method flow of the heuristic-driven integrated machine is as follows: Figure 7 As shown.

[0226] First Start-up Mode Description: When an ignition signal is received and the system is normal, the start-up controller determines the presence of an external low-voltage battery and enters the first start-up mode. Power switches Q15 and Q16 in the external low-voltage battery reverse polarity protection module (C) are activated. Figure 8 As shown, the energy from the external low-voltage battery enters the motor controller circuit (A) via the external low-voltage battery reverse polarity protection module (C). At this time, the power switching devices (Q1 to Q6) of the motor controller circuit (A) are in three-phase full-bridge inverter mode, controlling the starter motor to run to the required torque speed to start the engine. At this time, the DC-DC circuit (B) is not yet working, and the power switching devices Q17 and Q18 of the onboard low-voltage battery reverse polarity protection module (D) are disconnected.

[0227] After the engine starts, power switches Q15 and Q16 in the external low-voltage battery anti-reverse module (C) disconnect, and the connection cable between the external low-voltage battery and the drone is disconnected. At this time, the engine is ignited and running, driving the starter-generator to operate in generator mode. At this time, the power switches (Q1 to Q6) of the motor controller circuit (A) are in controlled three-phase full-bridge rectification mode, controlling the conversion of three-phase AC to DC high voltage and controlling the output voltage to stabilize at the required voltage value. At this time, the onboard high-voltage battery is not powered, the DC-DC circuit (B) is not yet working, and although the motor controller circuit (A) is in generator mode, there is no actual load, and it is in the first generator operation mode.

[0228] Subsequently, the onboard high-voltage battery is powered on by controlling the on / off state of the pre-charging contactor and main contactor of the airborne high-voltage battery, as well as controlling the generation voltage value of the motor controller circuit (A). After power-on, the system enters the second power generation mode.

[0229] Second Start-up Mode Description: When the integrated start-up controller determines that there is no external low-voltage battery and the first start-up mode cannot be used, and the received high-voltage battery is in a normal state, it controls the onboard high-voltage battery pre-charge contactor and main contactor to power on the onboard high-voltage battery. At this time, power switches Q15 and Q16 in the external low-voltage battery reverse protection module (C) are disconnected, the DCDC circuit (B) is not working, and power switches Q17 and Q18 in the onboard low-voltage battery reverse protection module (D) are disconnected.

[0230] After power-on, the start-up controller enters the second startup mode, such as... Figure 9 As shown, the energy from the onboard high-voltage battery enters the motor controller circuit (A). At this time, the power switching devices (Q1 to Q6) of the motor controller circuit (A) are in the three-phase full-bridge inverter state, controlling the starter motor to run to the required torque speed to start the engine.

[0231] Once the engine starts, it drives the integrated starter-generator to operate in generator mode. At this time, the power switching devices (Q1 to Q6) of the motor controller circuit (A) are in controlled three-phase full-bridge rectification mode, controlling the three-phase AC to convert to DC high voltage and stabilizing the output voltage at the required voltage value. Then, it enters the second generator operating mode.

[0232] Third Start-up Mode Description: When the integrated starter controller determines that there is no external low-voltage battery and the first start-up mode cannot be used, and the received high-voltage battery is in an abnormal state, it enters the third start-up mode. Power switches Q17 and Q18 of the onboard low-voltage battery reverse polarity protection module (D) are turned on, power switches (Q11 to Q14) in the DC-DC circuit (B) are in full-bridge inverter mode, and power switches (Q7 to Q10) are in full-bridge synchronous rectification mode, converting the onboard low-voltage battery voltage to high voltage. For example... Figure 10 As shown, the energy from the onboard low-voltage battery enters the motor controller circuit (A) via the onboard low-voltage battery reverse polarity protection module (D) and the DC-DC circuit (B). At this time, the power switching devices (Q1 to Q6) of the motor controller circuit (A) are in three-phase full-bridge inverter mode, controlling the starter motor to run to the required torque speed to start the engine. At this time, the power switching devices Q15 and Q16 in the external low-voltage battery reverse polarity protection module (C) are disconnected.

[0233] After the engine starts, it drives the integrated starter-generator to operate in generator mode. At this time, the power switching devices (Q1 to Q6) of the motor controller circuit (A) are in controlled three-phase full-bridge rectification mode, controlling the three-phase AC to convert to DC high voltage and controlling the output voltage to stabilize at the required voltage value. At this time, the onboard high-voltage battery is not powered, the DC-DC circuit (B) stops working, and although the motor controller circuit (A) is in generator mode, there is no actual load, and it is in the first generator operation mode.

[0234] Subsequently, the onboard high-voltage battery is powered on by controlling the on / off state of the pre-charging contactor and main contactor of the airborne high-voltage battery, as well as controlling the generation voltage value of the motor controller circuit (A). After power-on, the system enters the second power generation mode.

[0235] First power generation mode description: The engine drives the integrated starter-generator to operate in power generation mode. At this time, the power switching devices (Q1 to Q6) of the motor controller circuit (A) are in controlled three-phase full-bridge rectification state, controlling the conversion of three-phase AC to DC high voltage, and controlling the output voltage to stabilize at the required voltage value. Figure 11 As shown, the engine's energy enters the onboard high-voltage circuit via the starter-generator and motor controller circuit (A), but there is no actual load at this time.

[0236] At this time, the power switching devices Q17 and Q18 of the airborne low-voltage battery anti-reverse module (D) are disconnected, the DC-DC circuit (B) is not working, and the power switching devices Q15 and Q16 in the external low-voltage battery anti-reverse module (C) are disconnected.

[0237] Description of the second power generation mode: The engine drives the starter-generator to operate in power generation mode. At this time, the power switching devices (Q1 to Q6) of the motor controller circuit (A) are in controlled three-phase full-bridge rectification state, controlling the conversion of three-phase AC to DC high voltage, and controlling the output voltage to stabilize at the required voltage value. The energy of the engine enters the onboard high-voltage battery through the starter-generator and the motor controller circuit (A).

[0238] At this time, power switching devices Q17 and Q18 of the airborne low-voltage battery anti-reverse module (D) are turned on, power switching devices (Q7 to Q10) in the DC-DC circuit (B) are in phase-shifted full-bridge inverter state, and power switching devices (Q11 to Q14) are in full-bridge synchronous rectification state, converting the airborne high-voltage circuit voltage to low voltage. Figure 12 As shown, the engine's energy enters the onboard low-voltage battery via the starter-generator, motor controller circuit (A), DC-DC circuit (B), and onboard low-voltage battery anti-reverse module (D).

[0239] At this time, the power switching devices Q15 and Q16 in the external low-voltage battery anti-reverse module (C) are disconnected.

[0240] Third Power Generation Mode Description: When the engine or starter-generator malfunctions, energy cannot be obtained from the engine. In special applications, the third power generation mode can be activated. First, the onboard high-voltage battery is powered on by controlling the onboard high-voltage battery pre-charge contactor and main contactor. Then, the third power generation mode is entered. In this mode, the motor controller circuit (A) is not operating, and power switches Q15 and Q16 in the external low-voltage battery reverse polarity protection module (C) are disconnected. At this time, power switches Q17 and Q18 in the onboard low-voltage battery reverse polarity protection module (D) are turned on. Power switches (Q7 to Q10) in the DC-DC circuit (B) are in phase-shifted full-bridge inverter mode, and power switches (Q11 to Q14) are in full-bridge synchronous rectification mode, converting the onboard high-voltage circuit voltage to low voltage. For example... Figure 13 As shown, the energy from the airborne high-voltage battery enters the airborne low-voltage battery via the DC-DC circuit (B) and the airborne low-voltage battery anti-reverse module (D).

[0241] This application describes several embodiments, but these descriptions are exemplary and not restrictive, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with, or may replace, any feature or element of any other embodiment.

[0242] Any feature shown and / or discussed in this application may be implemented individually or in any suitable combination.

[0243] Furthermore, in describing representative embodiments, the specification may have presented methods and / or processes as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described herein, to the extent that it does not depend on such a specific order. Other sequences of steps are possible, as will be understood by those skilled in the art.

[0244] It will be understood by those skilled in the art that all or some of the steps, systems, or apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

Claims

1. A heuristic-driven integrated controller, applied to the heuristic-driven integrated controller of a drone, characterized in that, The integrated controller for the power supply includes a main power circuit, a drive circuit, and a control circuit; The drive circuit is configured to drive the main power circuit under the action of the drive signal output by the control circuit. The control circuit is configured to detect whether the starter-powered unit is normal when an ignition signal is received; when the starter-powered unit is in normal condition, it determines the operating mode of the main power circuit based on the status information of the external low-voltage battery and the status information of the onboard high-voltage battery, and outputs a corresponding drive signal to the drive circuit according to the determined operating mode. The main power circuit is configured to perform at least one of the following operations under the drive of the drive circuit: converting DC power into three-phase AC power to drive the integrated starter generator; converting the three-phase AC power generated by the integrated starter generator into high-voltage DC power; converting the high-voltage DC power into low-voltage DC power; and converting the low-voltage DC power into high-voltage DC power; wherein the DC power includes high-voltage DC power and low-voltage DC power. The main power circuit includes connection terminals that are respectively connected to the starter-generator, the onboard high-voltage battery, and the onboard low-voltage battery, as well as an external low-voltage battery interface. The main power circuit has three operating modes: a first startup operating mode, a second startup operating mode, and a third startup operating mode. The operating mode of the main power circuit is determined based on the status information of the external low-voltage battery and the onboard high-voltage battery, including: When the connection status of the external low-voltage battery is determined to be connected and in normal condition, the operating mode of the main power circuit is determined to be the first start-up operating mode. When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in normal working condition, the main power circuit is set to the second start-up working mode. When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in an abnormal working state, the main power circuit is set to the third start-up working mode. The control circuit is further configured to determine the corresponding power generation mode based on the working mode of the main power circuit and whether the onboard high-voltage battery is powered on after the integrated generator generates electricity. The corresponding power generation mode is determined based on the operating mode of the main power circuit and whether the onboard high-voltage battery is energized, including: When in the first or third start-up working mode, the main power circuit is first controlled according to the first power generation mode; the first power generation mode is to convert the three-phase AC power generated by the generator into high-voltage DC power; when the onboard high-voltage battery is powered on, the main power circuit is then controlled according to the second power generation mode. When in the second start-up working mode, the main power circuit is controlled according to the second power generation mode; The second power generation mode is to use the high-voltage direct current to charge the airborne high-voltage battery and to convert the high-voltage direct current into low-voltage direct current to charge the airborne low-voltage battery.

2. The integrated controller for a starter generator as described in claim 1, characterized in that, When in the first startup working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the external low-voltage battery into three-phase AC power to drive the starter-generator. When in the second start-up working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the onboard high-voltage battery into three-phase AC power to drive the start-up integrated machine. When in the third start-up working mode, the main power circuit, driven by the drive circuit, converts the low-voltage DC power generated by the onboard low-voltage battery into high-voltage DC power, and then converts the high-voltage DC power into three-phase AC power to drive the starter-generator.

3. The integrated controller for a starter-driven computer as described in claim 1, characterized in that, The control circuit is also configured to output a corresponding drive signal to the drive circuit according to the third power generation mode when the integrated generator malfunctions and the onboard high-voltage battery is powered on. The third power generation mode is to convert the high-voltage DC power generated by the airborne high-voltage battery into low-voltage DC power to charge the airborne low-voltage battery.

4. The integrated controller for a starter-driven computer as described in claim 1, characterized in that, The main power circuit includes a motor controller module and a DC-DC module; The motor controller module is configured to convert DC power into three-phase AC power to drive the integrated generator; and to convert the three-phase AC power generated by the integrated generator into DC power. The DC-DC module is configured to convert high-voltage DC to low-voltage DC and low-voltage DC to high-voltage DC.

5. The integrated controller for a starter-driven machine as described in claim 4, characterized in that, The main power circuit also includes an external low-voltage battery anti-reverse module and an airborne low-voltage battery anti-reverse module. The external low-voltage battery anti-reverse module is configured to electrically isolate the onboard high-voltage battery and the external low-voltage battery, and to prevent the external low-voltage battery from being connected in reverse. The airborne low-voltage battery anti-reverse module is configured to electrically isolate the airborne low-voltage battery and the DC-DC module, and to prevent the airborne low-voltage battery from being connected in reverse.

6. The integrated controller for a starter-driven computer as described in claim 5, characterized in that, The motor controller module includes a first capacitor and a three-phase full-bridge inverter sub-circuit; The first capacitor is connected in parallel with the three-phase full-bridge inverter sub-circuit; The first capacitor is connected to both the onboard high-voltage battery and the external low-voltage battery interface; the three-phase full-bridge inverter sub-circuit is connected to the starter generator.

7. The integrated controller for a starter generator as described in claim 6, characterized in that, The DC-DC module includes a second capacitor, a first conversion sub-circuit, a first transformer, a second conversion sub-circuit, a first inductor, and a third capacitor; The second capacitor is connected in parallel with the onboard high-voltage battery; the second capacitor is connected in parallel with the external low-voltage battery interface through the external low-voltage battery anti-reverse module; The first conversion sub-circuit includes a first transistor, a second transistor, a third transistor, and a fourth transistor; the first terminal of the first transistor is connected in series with the first terminal of the second transistor, and the first terminal of the third transistor is connected in series with the first terminal of the fourth transistor; the second terminal of the first transistor is connected to one end of the second capacitor; the second terminal of the second transistor is connected to the other end of the second capacitor; the first terminal of the first transistor and the first terminal of the third transistor are respectively connected to the primary winding of the first transformer. The second conversion sub-circuit includes a fifth transistor, a sixth transistor, a seventh transistor, and an eighth transistor; the first terminal of the fifth transistor is connected in series with the first terminal of the sixth transistor, and the first terminal of the seventh transistor is connected in series with the first terminal of the eighth transistor; the first terminals of the fifth transistor and the seventh transistor are respectively connected to the secondary winding of the first transformer. The second terminal of the fifth transistor and the second terminal of the seventh transistor are respectively connected to the first terminal of the first inductor; the second terminal of the first inductor is connected to the first terminal of the third capacitor; the second terminal of the sixth transistor and the second terminal of the eighth transistor are respectively connected to the second terminal of the third capacitor. The first terminal of the third capacitor is connected to the positive terminal of the airborne low-voltage battery through the airborne low-voltage battery anti-reverse module; the second terminal of the third capacitor is connected to the negative terminal of the airborne low-voltage battery.

8. The integrated controller for a starter generator as described in claim 7, characterized in that, The airborne low-voltage battery anti-reverse module includes two transistors connected in series; The external low-voltage battery anti-reverse module includes two transistors connected in series.

9. The integrated controller for a starter-driven machine as described in claim 1, characterized in that, The control circuit includes a communication interface; The communication interface is used to communicate with the UAV flight controller, engine controller, and high-voltage battery controller, respectively.

10. A drone-based power supply system, comprising the integrated power supply controller as described in any one of claims 1-9; characterized in that, It also includes an integrated generator, an airborne high-voltage battery, an airborne low-voltage battery, an engine controller, an airborne high-voltage battery controller, and a drone flight controller; The starter-powered all-in-one controller is connected to the starter-powered all-in-one machine, the onboard high-voltage battery, and the onboard low-voltage battery, respectively. The starter-generator is configured to start and generate electricity using power from a ground-based low-voltage starter battery, an onboard high-voltage battery, or an onboard low-voltage battery under the control of the starter-generator controller. The integrated generator controller is also connected to the UAV flight controller, engine controller and airborne high-voltage battery controller respectively. The drone flight controller is used to obtain the drone's operating status and the status of its onboard low-voltage battery. The engine controller is used to acquire the engine's operating status, torque, and speed. The high-voltage battery controller is used to acquire the operating status of the high-voltage battery and the status of the pre-charge relay and main relay inside the high-voltage battery.

11. A control method applied to the integrated controller for a starter-driven machine as described in any one of claims 1-9, characterized in that, When an ignition signal is received, check whether the starter-generator is functioning properly; When the integrated power generator is in normal condition, the operating mode of the main power circuit is determined based on the status information of the external battery and the status information of the onboard high-voltage battery. The main power circuit is then controlled to start the integrated power generator and generate electricity according to the determined operating mode. After the integrated power generator generates electricity, the corresponding power generation mode is determined based on the determined operating mode of the main power circuit and whether the onboard high-voltage battery is powered on. The main power circuit is then controlled according to the determined power generation mode.

12. The control method as described in claim 11, characterized in that, The main power circuit has three operating modes: a first startup operating mode, a second startup operating mode, and a third startup operating mode. The operating mode of the main power circuit is determined based on the external battery connection status information and the onboard high-voltage battery status information, including: When the connection status of the external low-voltage battery is determined to be "connected", the operating mode of the main power circuit is determined to be the first start-up operating mode. When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in normal working condition, the main power circuit is set to the second start-up working mode. When it is determined that the external low-voltage battery is not connected and the onboard high-voltage battery is in an abnormal working state, the main power circuit is set to the third start-up working mode.

13. The control method as described in claim 12, characterized in that, When in the first startup working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the external low-voltage battery into three-phase AC power to drive the starter-generator. When in the second start-up working mode, the main power circuit, driven by the drive circuit, converts the DC power generated by the onboard high-voltage battery into three-phase AC power to drive the start-up integrated machine. When in the third start-up working mode, the main power circuit, driven by the drive circuit, converts the low-voltage DC power generated by the onboard low-voltage battery into high-voltage DC power, and then converts the high-voltage DC power into three-phase AC power to drive the starter-generator.

14. The control method as described in claim 12, characterized in that, The corresponding power generation mode is determined based on the operating mode of the main power circuit and whether the onboard high-voltage battery is energized, including: When in the first or third start-up working mode, the main power circuit is first controlled according to the first power generation mode; the first power generation mode is to convert the three-phase AC power generated by the generator into high-voltage DC power; when the onboard high-voltage battery is powered on, the main power circuit is then controlled according to the second power generation mode. When in the second start-up working mode, the main power circuit is controlled according to the second power generation mode; The second power generation mode is to use the high-voltage direct current to charge the airborne high-voltage battery and to convert the high-voltage direct current into low-voltage direct current to charge the airborne low-voltage battery.

15. The control method as described in claim 11, characterized in that, When the integrated generator malfunctions and the onboard high-voltage battery is already powered on, the main power circuit is controlled according to the third power generation mode. The third power generation mode is to convert the high-voltage DC power generated by the airborne high-voltage battery into low-voltage DC power to charge the airborne low-voltage battery.

Images