A power supply system and a power supply method

Abstract

This application discloses a power supply system and a power supply method. The power supply system includes: a flywheel motor, a power conversion module, a power supply control module, a first power supply interface, a second power supply interface, and a communication bus; the flywheel motor module includes a flywheel motor and a converter circuit; the power supply control module is connected to the control terminals of the converter circuit and the power conversion module respectively via the communication bus; the rotor of the flywheel motor replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle; the stator of the flywheel motor is mounted on the engine housing and connected to the first terminal of the converter circuit; the second terminal of the converter circuit is connected to the first terminal of the power conversion module and the first power supply interface; the second terminal of the power conversion module is connected to the second power supply interface. This system can achieve both driving and parking power generation, and it eliminates the need to modify the special vehicle's base, resulting in a compact structure and facilitating type certification for special vehicles.

Description

Technical Field

[0001] This application belongs to the field of power supply technology for special vehicles, specifically relating to a power supply system and power supply method. Background Technology

[0002] In related technologies, the solution of generating electricity from the drive shaft involves adding a generator between the engine flywheel and the clutch. This can achieve power generation while driving and while parked, and has the advantage of high power output. However, it requires major modifications to the chassis, as well as changes to the frame beams, etc. Not only is the structure not compact enough, but it is also difficult to pass the type certification for special vehicles. Summary of the Invention

[0003] The purpose of this application is to provide a power supply system and method that can achieve power generation while driving and power generation while parked without modifying the vehicle chassis.

[0004] In a first aspect, embodiments of this application provide a power supply system for use in special vehicles; the power supply system includes:

[0005] The system comprises a flywheel motor, a power conversion module, a power supply control module, a first power supply interface, a second power supply interface, and a communication bus. The flywheel motor includes a flywheel motor and a converter circuit. The power supply control module is connected to the control terminals of the converter circuit and the power conversion module via the communication bus. The rotor of the flywheel motor replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle. The stator of the flywheel motor is mounted on the engine housing and connected to the first terminal of the converter circuit. The second terminal of the converter circuit is connected to the first terminal of the power conversion module and the first power supply interface. The second terminal of the power conversion module is connected to the second power supply interface.

[0006] The power supply control module is used to acquire the operating mode of the special vehicle, and when the operating mode of the special vehicle is a first type of mode indicating power generation, it generates a first control signal and a second control signal.

[0007] The flywheel motor is used to generate a three-phase AC signal based on the torque output from the crankshaft and output it to the converter circuit.

[0008] The converter circuit is used to respond to the first control signal to convert the three-phase AC signal into a first target DC signal and provide it to the first power supply interface and the power conversion module, so as to provide the first target DC signal to the first load corresponding to the first power supply interface.

[0009] The power conversion module is configured to perform a first signal conversion on the first target DC signal in response to the second control signal to obtain a target AC signal; perform a second signal conversion on the first target signal to obtain a second target DC signal; and provide the target AC signal and the second target DC signal to the second power supply interface to provide the target AC signal and the second target DC signal to the second load corresponding to the second power supply interface.

[0010] In some embodiments, the power supply system further includes a battery module, which includes a battery control circuit and a storage battery; the battery control circuit is connected between the second terminal of the converter circuit and the storage battery; the power supply control module is connected to the control terminal of the battery control circuit through the communication bus; the power supply control module is used to acquire the operating mode of the special vehicle and the battery charge, and generate a third control signal when the operating mode of the special vehicle is the first type of mode and the battery charge is less than or equal to a first threshold.

[0011] The converter circuit is also used to provide the first target DC signal to the battery control circuit;

[0012] The battery control circuit is configured to, in response to the third control signal, connect the second terminal of the converter circuit to the battery so as to charge the battery via the first target DC signal.

[0013] In some embodiments, the power supply control module is used to generate the third control signal and the fourth control signal when the special vehicle is in the second type of operating mode and the battery charge is greater than or equal to a second threshold.

[0014] The battery control circuit is used to respond to the third control signal to connect the second terminal of the converter circuit to the battery, so that the battery provides a reverse DC signal to the converter circuit.

[0015] The converter circuit is used to respond to the fourth control signal, adjust the amplitude of the reverse DC signal to obtain a DC signal with a first amplitude, and invert the first DC signal to obtain three reverse AC signals, which are then transmitted to the flywheel motor.

[0016] The flywheel motor is used to drive the crankshaft based on the three opposing AC signals to increase the output torque of the crankshaft.

[0017] In some embodiments, the rotor of the flywheel motor is also connected to the transmission of the special vehicle via the clutch of the special vehicle;

[0018] The flywheel motor is also used to transmit the torque output by the crankshaft to the clutch, so that the torque can be transmitted to the transmission through the clutch, and then to the drive axle of the special vehicle to achieve control of the special vehicle.

[0019] In some embodiments, the converter circuit includes a reversible rectifier and a first DC-DC converter; the stator of the flywheel motor is connected to a first terminal of the reversible rectifier; a second terminal of the reversible rectifier is connected to a first terminal of the first DC-DC converter; a second terminal of the first DC-DC converter is connected to a first terminal of the power conversion module, a first power supply interface, and a first terminal of the battery control circuit; the power supply control module is connected to the reversible rectifier and the first DC-DC converter via the communication bus; the first control signal includes a first sub-signal and a second sub-signal.

[0020] The flywheel motor is used to generate a three-phase AC signal based on the torque output from the crankshaft and output it to the reversible rectifier.

[0021] The reversible rectifier is used to synchronously rectify the three-phase AC signal in response to the first sub-signal to obtain a DC signal of the first amplitude.

[0022] The first DC converter is used to adjust the amplitude of the first amplitude DC signal in response to the second sub-signal to obtain the first target DC signal and provide it to the first power supply interface and the power conversion module, so as to provide the first target DC signal to the first load corresponding to the first power supply interface;

[0023] The battery control circuit is configured to, in response to the third control signal, connect the first DC converter to the battery so as to charge the battery via the first target DC signal.

[0024] In some implementations, the fourth control signal includes a third sub-signal and a fourth sub-signal;

[0025] The battery control circuit is used to respond to a third control signal to connect the first DC converter and the battery, so that the battery provides a reverse DC signal to the first DC converter.

[0026] The first DC-DC converter is used to adjust the amplitude of the reverse DC voltage signal in response to the third sub-signal to obtain a DC signal with the first amplitude.

[0027] The reversible rectifier is used to perform three-phase inversion on the first amplitude DC signal in response to the fourth sub-signal to obtain the three-phase reverse AC signal.

[0028] In some embodiments, the power conversion module includes an inverter and a second DC-DC converter; the input terminals of the inverter and the second DC-DC converter are both connected to the second terminal of the converter circuit; the second power supply interface includes an AC interface and a DC interface; the second load includes a DC load and an AC load; the power supply control module is connected to the control terminals of the inverter and the second DC-DC converter respectively via the communication bus; the second control signal includes a fifth sub-signal and a sixth sub-signal; the output terminal of the inverter is connected to the AC interface; the output terminal of the second DC-DC converter is connected to the DC interface;

[0029] The converter circuit is used to respond to the first control signal to convert the three-phase AC signal into the first target DC signal and provide it to the first power supply interface, the input terminal of the inverter and the input terminal of the second DC converter, so as to provide the first target DC signal to the first load corresponding to the first power supply interface;

[0030] The inverter is used to respond to the fifth sub-signal by performing a first signal conversion on the first target DC signal to obtain the target AC signal and providing it to the AC interface, so as to provide the target AC signal to the AC load.

[0031] The second DC-DC converter is used to perform a second signal transformation on the first target signal in response to the sixth sub-signal to obtain the second target DC signal and provide it to the DC interface so as to provide the second target DC signal to the DC load.

[0032] In some embodiments, the first power supply interface, the DC interface, and the AC interface are respectively a 48V DC interface, a 24V DC interface, and a 380V / 220V AC interface;

[0033] Correspondingly, the first load, DC load, and AC load are 48V DC load, 24V DC load, and 380V / 220V AC load, respectively.

[0034] In some implementations, the first type of mode includes at least a driving power generation mode and a parking power generation mode; the second type of mode includes at least a starting mode and a battery-assisted mode.

[0035] Secondly, embodiments of this application provide a power supply method applied to the aforementioned power supply system, the method comprising:

[0036] The power supply control module acquires the operating mode of the special vehicle, and when the operating mode of the special vehicle is the first type of mode indicating power generation, it generates a first control signal and a second control signal.

[0037] The flywheel motor generates a three-phase AC signal based on the torque output from the crankshaft and outputs it to the converter circuit;

[0038] The converter circuit responds to the first control signal by converting the three-phase AC signal into a first target DC signal and providing it to the first power supply interface and the power conversion module, so as to provide the first target DC signal to the first load corresponding to the first power supply interface;

[0039] The power conversion module responds to the second control signal by performing a first signal conversion on the first target DC signal to obtain a target AC signal; performs a second signal conversion on the first target signal to obtain a second target DC signal, and provides the target AC signal and the second target DC signal to the second power supply interface to provide the target AC signal and the second target DC signal to the second load corresponding to the second power supply interface.

[0040] In this embodiment, when the special vehicle is in operation, the power supply control module can obtain the vehicle's operating mode. If the operating mode is a first mode indicating power generation, regardless of whether the vehicle is in a driving or parked state, a first control signal and a second control signal are generated. Thus, the flywheel motor can generate a three-phase AC signal based on the torque output from the crankshaft and supply it to the converter circuit. The converter circuit, in response to the first control signal, converts the three-phase AC signal into a first target DC signal and provides it to the first power supply interface, thereby providing the first target DC signal to the first load corresponding to the first power supply interface. The power conversion module, in response to the second control signal, performs a first signal conversion on the first target DC signal to obtain a target AC signal; it then performs a second signal conversion on the first target signal to obtain a second target DC signal, and provides both the target AC signal and the second target DC signal to the second power supply interface, thereby providing both the target AC signal and the second target DC signal to the second load corresponding to the second power supply interface. This enables both driving-generation and parking-generation.

[0041] Meanwhile, since the rotor of the flywheel motor replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle, and the stator of the flywheel motor is mounted on the housing of the engine, there is no need to modify the base of the special vehicle. This not only makes the structure more compact, but also facilitates the type certification of the special vehicle. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the composition structure of a power generation system provided in an embodiment of this application;

[0043] Figure 2 A schematic block diagram of a flywheel motor system provided in an embodiment of this application;

[0044] Figure 3 A schematic diagram of the composition structure of a special vehicle system equipped with a flywheel motor system is provided for an embodiment of this application;

[0045] Figure 4 This application provides a schematic diagram illustrating the specific operating mode conversion of a special vehicle in an embodiment of the present application.

[0046] Figure 5a A schematic diagram illustrating the starting mode of a special vehicle based on a flywheel motor power supply system, provided as an embodiment of this application;

[0047] Figure 5b A schematic diagram illustrating the operation of a special vehicle's on-road power generation mode based on a flywheel motor power supply system, provided as an embodiment of this application;

[0048] Figure 5c A schematic diagram illustrating the operation of a special vehicle's power assist mode based on a flywheel motor power supply system, provided as an embodiment of this application;

[0049] Figure 5d A schematic diagram illustrating the operation of a special vehicle in a parking power generation mode based on a flywheel motor power supply system, provided as an embodiment of this application;

[0050] Figure 5e A schematic diagram illustrating the charging mode operation of a special vehicle based on a flywheel motor power supply system, provided as an embodiment of this application;

[0051] Figure 6 This is a schematic diagram illustrating the implementation process of a power supply method provided in an embodiment of this application. Detailed Implementation

[0052] The power supply system provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0053] With the development of automotive electrification, special vehicles are increasingly equipped with onboard electrical equipment, leading to a greater demand for electrical power. For example, special vehicles such as shower trucks, communication relay vehicles, and catering trucks require at least 10kW (kilowatts) of electrical power, while ordinary vehicle-mounted generators have a maximum power supply capacity of only 3kW, which is clearly insufficient. To meet the electrical needs of special vehicles, relevant technical personnel have proposed various solutions for adding generators to existing vehicles, mainly including the following three solutions:

[0054] Option 1: Power take-off (PTO) from the gearbox. This option involves installing a PTO at the PTO and then using a driveshaft to transmit power to a generator mounted on the chassis. The generator directly outputs 220V / 5Hz three-phase AC power. A voltage regulator adjusts the generator's output voltage amplitude, and an electronic speed controller ensures the engine speed is within the required range for power generation. This option can only be used for parking power generation. The parking power generation system has an interlock function between driving and parking, meaning it can only start when the chassis handbrake is engaged; when the handbrake is released during parking power generation, the system automatically disengages. Due to engine compartment space limitations, the power output of this option is limited, requiring a high-power-density generator, which presents a high technical barrier. Light-duty high-mobility vehicles often use imported generators, making complete domestic production of components impossible. Since axle-driven self-generating systems generally use synchronous belt drive, the generator is prone to "slippage," affecting power generation efficiency and quality. Belt life is also a bottleneck affecting the reliability of the power generation system.

[0055] Option 2: Power generation via belt take-off from the engine front. This option uses dual belts to drive dual motors to generate electricity, which is then stably output through a control unit. Combined with a 48V battery pack, it provides AC and DC power to onboard equipment during vehicle parking and driving. This option requires the addition of a power take-off device and driveshaft, occupying a large space and preventing power generation while the vehicle is in motion. The generator uses general-purpose excitation and permanent magnet generators. Due to the lack of optimization design for special applications, the generators are too large and heavy, limiting installation space and affecting power output. For example, a medium-sized high-mobility 8kW excitation generator weighs nearly 130kg and has a volume of 54 liters; while a 24kW permanent magnet generator weighs 150kg and has a volume of 68 liters. Some modification companies arbitrarily alter the chassis's technical specifications, resulting in reduced chassis performance and affecting the normal operation of the vehicle's transmission system. For example, camouflage work vehicles using power take-off from the transfer case experience difficulty shifting gears when transitioning from parking to driving.

[0056] Option 3: A driveshaft-derived power generation solution. This option involves installing a generator between the engine flywheel and the clutch, then converting the voltage to 220V / 380V AC and 24V DC to power onboard equipment during parking and driving. While this option offers the advantage of high power output, it requires significant modifications to the vehicle's chassis, including moving the gearbox rearward, lengthening and shortening the driveshaft, and altering the frame crossbeams. This would make it difficult for the vehicle to pass type approval.

[0057] Based on the above-mentioned technical problems, this application provides a power generation system for use in special vehicles, such as... Figure 1As shown, the power supply system includes: a flywheel motor 10, a power conversion module 11, a power supply control module 12, a first power supply interface 13, a second power supply interface 14, and a communication bus 15; the flywheel motor module 10 includes a flywheel motor 101 and a converter circuit 102; the power supply control module 12 is connected to the control terminals of the converter circuit 102 and the power conversion module 11 respectively through the communication bus 15; the rotor of the flywheel motor 102 replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle; the stator of the flywheel motor 102 is mounted on the housing of the engine and is connected to the first terminal of the converter circuit 102; the second terminal of the converter circuit 102 is connected to the first terminal of the power conversion module 11 and the first power supply interface 13; the second terminal of the power conversion module 11 is connected to the second power supply interface 14;

[0058] The power supply control module 12 is used to obtain the working mode of the special vehicle, and when the working mode of the special vehicle is the first type of mode indicating power generation, it generates a first control signal and a second control signal.

[0059] The flywheel motor 101 is used to generate a three-phase AC signal based on the torque output from the crankshaft and output it to the converter circuit 102.

[0060] The converter circuit 102 is used to respond to the first control signal to convert the three-phase AC signal into a first target DC signal and provide it to the first power supply interface 13 and the power conversion module 11, so as to provide the first target DC signal to the first load corresponding to the first power supply interface 13.

[0061] The power conversion module 11 is configured to perform a first signal conversion on the first target DC signal in response to the second control signal to obtain a target AC signal; perform a second signal conversion on the first target signal to obtain a second target DC signal; and provide the target AC signal and the second target DC signal to the second power supply interface 14 so as to provide the target AC signal and the second target DC signal to the second load corresponding to the second power supply interface 14.

[0062] Here, the communication bus can be a Controller Area Network (CAN) bus; the first type of mode can be the mode in which the flywheel motor 101 is in the power generation state.

[0063] In some possible implementations, the first type of mode includes at least a driving power generation mode and a parked power generation mode.

[0064] It is understood that the first power supply interface 13 can be a 48V DC interface; the first load can be a 48V DC load; the second power supply interface 14 can include an AC interface for outputting a target AC signal and a DC interface for outputting a second target DC signal.

[0065] In some implementations, the power supply control module 12 can also be connected to the engine controller of the engine in the special vehicle via the communication bus 15.

[0066] In this embodiment, when the special vehicle is in operation, the power supply control module can obtain the vehicle's operating mode. If the operating mode is a first mode indicating power generation, regardless of whether the vehicle is in a driving or parked state, a first control signal and a second control signal are generated. Thus, the flywheel motor can generate a three-phase AC signal based on the torque output from the crankshaft and supply it to the converter circuit. The converter circuit, in response to the first control signal, converts the three-phase AC signal into a first target DC signal and provides it to the first power supply interface, thereby providing the first target DC signal to the first load corresponding to the first power supply interface. The power conversion module, in response to the second control signal, performs a first signal conversion on the first target DC signal to obtain a target AC signal; it then performs a second signal conversion on the first target signal to obtain a second target DC signal, and provides both the target AC signal and the second target DC signal to the second power supply interface, thereby providing both the target AC signal and the second target DC signal to the second load corresponding to the second power supply interface. This enables both driving-generation and parking-generation.

[0067] Meanwhile, since the rotor of the flywheel motor replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle, and the stator of the flywheel motor is mounted on the housing of the engine, there is no need to modify the base of the special vehicle. This not only makes the structure more compact, but also facilitates the type certification of the special vehicle.

[0068] This application provides another power supply system for special vehicles, the system comprising:

[0069] The system comprises a flywheel motor, a power conversion module, a power supply control module, a first power supply interface, a second power supply interface, a communication bus, and a battery module. The flywheel motor module includes a flywheel motor and a converter circuit. The battery module includes a battery control circuit and a storage battery. The power supply control module is connected to the control terminals of the converter circuit, the power conversion module, and the battery control circuit via the communication bus. The rotor of the flywheel motor replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle. The stator of the flywheel motor is mounted on the engine housing and connected to the first terminal of the converter circuit. The second terminal of the converter circuit is connected to the first terminal of the power conversion module, the first power supply interface, and the first terminal of the battery control circuit. The second terminal of the battery control circuit is connected to the storage battery. The second terminal of the power conversion module is connected to the second power supply interface.

[0070] The power supply control module is used to obtain the working mode of the special vehicle and the power of the battery. When the working mode of the special vehicle is the first type of power generation mode and the power of the battery is less than or equal to a first threshold, it generates a first control signal, a second control signal and a third control signal.

[0071] The flywheel motor is used to generate a three-phase AC signal based on the torque output from the crankshaft and output it to the converter circuit.

[0072] The converter circuit is used to respond to the first control signal to convert the three-phase AC signal into a first target DC signal and provide it to the first power supply interface and the power conversion module, so as to provide the first target DC signal to the first load corresponding to the first power supply interface.

[0073] The battery control circuit is configured to, in response to the third control signal, connect the first target DC signal to the battery so as to charge the battery through the first target DC signal.

[0074] The power conversion module is configured to perform a first signal conversion on the first target DC signal in response to the second control signal to obtain a target AC signal; perform a second signal conversion on the first target signal to obtain a second target DC signal; and provide the target AC signal and the second target DC signal to the second power supply interface to provide the target AC signal and the second target DC signal to the second load corresponding to the second power supply interface.

[0075] Here, the first threshold can be 60% or 50%. The third control signal is used to control the charging of the battery in the battery module.

[0076] In some possible implementations, the battery control circuit may include a switching transistor connected between the second terminal of the converter circuit and the battery. This switching transistor may be a metal-oxide-semiconductor field-effect transistor (MOFET).

[0077] In one embodiment, the battery may be a 48V lead-acid battery or a nickel-cadmium battery.

[0078] In this embodiment, the operating mode of the special vehicle and the battery charge are obtained through the power supply control module. When the special vehicle is in the first operating mode and the battery charge is less than or equal to a first threshold, a third control signal is generated. The third control signal controls the battery control circuit to connect the second terminal of the converter circuit to the battery, allowing the battery to be charged via a first target DC signal. This facilitates engine assistance or engine starting via the battery when the battery charge is sufficient.

[0079] This application provides another power supply system for special vehicles, the system comprising:

[0080] The system comprises a flywheel motor, a power conversion module, a power supply control module, a first power supply interface, a second power supply interface, a communication bus, and a battery module. The flywheel motor module includes a flywheel motor and a converter circuit. The battery module includes a battery control circuit and a storage battery. The power supply control module is connected to the control terminals of the converter circuit, the power conversion module, and the battery control circuit via the communication bus. The rotor of the flywheel motor replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle. The stator of the flywheel motor is mounted on the engine housing and connected to the first terminal of the converter circuit. The second terminal of the converter circuit is connected to the first terminal of the power conversion module, the first power supply interface, and the first terminal of the battery control circuit. The second terminal of the battery control circuit is connected to the storage battery. The second terminal of the power conversion module is connected to the second power supply interface.

[0081] The power supply control module is used to obtain the working mode of the special vehicle and the power of the battery. When the working mode of the special vehicle is the second type mode and the power of the battery is greater than or equal to the second threshold, the third control signal and the fourth control signal are generated.

[0082] The battery control circuit is used to respond to the third control signal to connect the second terminal of the converter circuit to the battery, so that the battery provides a reverse DC signal to the converter circuit.

[0083] The converter circuit is used to respond to the fourth control signal, adjust the amplitude of the reverse DC signal to obtain a DC signal with a first amplitude, and invert the first DC signal to obtain three reverse AC signals, which are then transmitted to the stator of the flywheel motor.

[0084] The flywheel motor is used to drive the crankshaft based on the three opposing AC signals to increase the output torque of the crankshaft.

[0085] In some implementations, the second type of mode includes at least a startup mode and a battery-assisted mode.

[0086] In some possible implementations, the second threshold can be 90%, or any value greater than 90%.

[0087] It is understandable that when the battery charge is greater than the second threshold, the battery voltage is greater than the voltage at the second terminal of the converter circuit. Therefore, when the second terminal of the converter circuit is connected to the battery, the battery provides a reverse DC signal to the converter circuit.

[0088] In some possible implementations, the converter circuit transmits the obtained three reverse AC signals to the stator (stator winding) of the flywheel motor, so that when the voltage on the stator winding increases, the flywheel motor can drive the rotor of the flywheel motor, and then drive the crankshaft of the engine on which the rotor is mounted, thereby increasing the output torque of the crankshaft.

[0089] In this embodiment, when the special vehicle is operating in the second mode and the battery charge is greater than or equal to a second threshold, the power supply control module generates the third and fourth control signals. The third control signal controls the battery control circuit to connect the second terminal of the converter circuit to the battery, allowing the battery to provide a reverse DC signal to the converter circuit. The fourth control signal controls the converter circuit to adjust the amplitude of the reverse DC signal to obtain a first amplitude DC signal, which is then inverted to obtain three reverse AC signals, which are transmitted to the flywheel motor. The flywheel motor can then drive the crankshaft based on these three reverse AC signals to increase the crankshaft's output torque. This enables engine assistance or engine starting.

[0090] This application provides yet another power supply system for special vehicles, the system comprising:

[0091] The system comprises a flywheel motor, a power conversion module, a power supply control module, a first power supply interface, a second power supply interface, and a communication bus. The flywheel motor module includes a flywheel motor and a converter circuit. The power supply control module is connected to the control terminals of the converter circuit and the power conversion module via the communication bus. The rotor of the flywheel motor replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle. The rotor of the flywheel motor is also connected to the transmission of the special vehicle via the clutch. The stator of the flywheel motor is mounted on the engine housing and connected to the first terminal of the converter circuit. The second terminal of the converter circuit is connected to the first terminal of the power conversion module and the first power supply interface. The second terminal of the power conversion module is connected to the second power supply interface.

[0092] The power supply control module is used to acquire the operating mode of the special vehicle, and when the operating mode of the special vehicle is a first type of mode indicating power generation, it generates a first control signal and a second control signal.

[0093] The flywheel motor is used to generate a three-phase AC signal based on the torque output from the crankshaft and output it to the converter circuit.

[0094] The flywheel motor is also used to transmit the torque output by the crankshaft to the clutch, so that the torque can be transmitted to the transmission through the clutch, and then to the drive axle of the special vehicle to realize the control of the special vehicle;

[0095] The converter circuit is used to respond to the first control signal to convert the three-phase AC signal into a first target DC signal and provide it to the first power supply interface and the power conversion module, so as to provide the first target DC signal to the first load corresponding to the first power supply interface.

[0096] The power conversion module is configured to perform a first signal conversion on the first target DC signal in response to the second control signal to obtain a target AC signal; perform a second signal conversion on the first target signal to obtain a second target DC signal; and provide the target AC signal and the second target DC signal to the second power supply interface to provide the target AC signal and the second target DC signal to the second load corresponding to the second power supply interface.

[0097] In this embodiment, the rotor of the flywheel motor is also connected to the transmission of the special vehicle via the clutch of the special vehicle. In this way, the flywheel motor can transmit the torque output from the crankshaft to the clutch, and then transmit the torque to the transmission, and then to the drive axle of the special vehicle, thereby controlling the special vehicle and ultimately achieving vehicle-driven power generation.

[0098] This application provides another power supply system for special vehicles, the system comprising:

[0099] The system comprises a flywheel motor, a power conversion module, a power supply control module, a first power supply interface, a second power supply interface, a communication bus, and a battery module. The flywheel motor module includes a flywheel motor and a converter circuit. The converter circuit includes a reversible rectifier and a first DC-DC converter. The battery module includes a battery control circuit and a battery. The power supply control module is connected to the control terminals of the reversible rectifier, the first DC-DC converter, the power conversion module, and the battery control circuit via the communication bus. The rotor of the flywheel motor replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle. The stator of the flywheel motor is mounted on the engine housing and connected to the first terminal of the reversible rectifier. The second terminal of the reversible rectifier is connected to the first terminal of the first DC-DC converter. The second terminal of the first DC-DC converter is connected to the first terminal of the power conversion module, the first power supply interface, and the first terminal of the battery control circuit. The second terminal of the battery control circuit is connected to the battery. The second terminal of the power conversion module is connected to the second power supply interface.

[0100] The power supply control module is used to acquire the operating mode of the special vehicle and the battery charge. When the operating mode of the special vehicle is the first type mode and the battery charge is less than or equal to a first threshold, it generates a first control signal, a second control signal and a third control signal. The first control signal includes a first sub-signal and a second sub-signal.

[0101] The flywheel motor is used to generate a three-phase AC signal based on the torque output from the crankshaft and output it to the reversible rectifier.

[0102] The reversible rectifier is used to synchronously rectify the three-phase AC signal in response to the first sub-signal to obtain a DC signal of the first amplitude.

[0103] The first DC converter is used to adjust the amplitude of the first amplitude DC signal in response to the second sub-signal to obtain the first target DC signal and provide it to the first power supply interface, the power conversion module and the battery control circuit, so as to provide the first target DC signal to the first load corresponding to the first power supply interface;

[0104] The battery control circuit is configured to, in response to the third control signal, connect the first DC converter and the battery to charge the battery via the first target DC signal.

[0105] The power conversion module is configured to perform a first signal conversion on the first target DC signal in response to the second control signal to obtain a target AC signal; perform a second signal conversion on the first target signal to obtain a second target DC signal; and provide the target AC signal and the second target DC signal to the second power supply interface to provide the target AC signal and the second target DC signal to the second load corresponding to the second power supply interface.

[0106] In this embodiment, the power supply control module acquires the operating mode of the special vehicle and the battery charge. When the special vehicle's operating mode is a first type and the battery charge is less than or equal to a first threshold, it generates a first control signal, a second control signal, and a third control signal. The first control signal includes a first sub-signal and a second sub-signal. The flywheel motor generates a three-phase AC signal based on the torque output from the crankshaft and outputs it to the reversible rectifier. The reversible rectifier synchronously rectifies the three-phase AC signal in response to the first sub-signal to obtain a DC signal of the first amplitude. The first DC converter adjusts the amplitude of the first amplitude DC signal in response to the second sub-signal to obtain a first target DC signal, which is provided to the first power supply interface, the power conversion module, and the battery control circuit to provide the first target DC signal to the first load corresponding to the first power supply interface. The battery control circuit, in response to the third control signal, connects the first DC converter to the battery to charge the battery through the first target DC signal. This facilitates engine assistance or engine starting via battery charge when the battery charge is sufficient.

[0107] This application provides another power supply system for special vehicles, the system comprising:

[0108] The system comprises a flywheel motor, a power conversion module, a power supply control module, a first power supply interface, a second power supply interface, a communication bus, and a battery module. The flywheel motor module includes a flywheel motor and a converter circuit. The converter circuit includes a reversible rectifier and a first DC-DC converter. The battery module includes a battery control circuit and a battery. The power supply control module is connected to the control terminals of the reversible rectifier, the first DC-DC converter, the power conversion module, and the battery control circuit via the communication bus. The rotor of the flywheel motor replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle. The stator of the flywheel motor is mounted on the engine housing and connected to the first terminal of the reversible rectifier. The second terminal of the reversible rectifier is connected to the first terminal of the first DC-DC converter. The second terminal of the first DC-DC converter is connected to the first terminal of the power conversion module, the first power supply interface, and the first terminal of the battery control circuit. The second terminal of the battery control circuit is connected to the battery. The second terminal of the power conversion module is connected to the second power supply interface.

[0109] The power supply control module is used to generate the third control signal and the fourth control signal when the special vehicle is in the second type of working mode and the battery charge is greater than or equal to the second threshold; the fourth control signal includes a third sub-signal and a fourth sub-signal.

[0110] The battery control circuit is used to respond to the third control signal to connect the first DC converter and the battery, so that the battery provides a reverse DC signal to the first DC converter.

[0111] The first DC-DC converter is used to adjust the amplitude of the reverse DC voltage signal in response to the third sub-signal to obtain a DC signal with the first amplitude.

[0112] The reversible rectifier is used to perform three-phase inversion on the first amplitude DC signal in response to the fourth sub-signal to obtain the three-phase reverse AC signal;

[0113] The flywheel motor is used to drive the crankshaft based on the three opposing AC signals to increase the output torque of the crankshaft.

[0114] In this embodiment, when the special vehicle is operating in the second type of mode and the battery charge is greater than or equal to a second threshold, the power supply control module generates the third and fourth control signals. The fourth control signal includes a third sub-signal and a fourth sub-signal. In response to the third control signal, the battery control circuit connects the first DC-DC converter to the battery, allowing the battery to provide a reverse DC signal to the first DC-DC converter. In response to the third sub-signal, the first DC-DC converter adjusts the amplitude of the reverse DC voltage signal to obtain a DC signal of the first amplitude. In response to the fourth sub-signal, the reversible rectifier performs three-phase inversion on the first amplitude DC signal to obtain the three-phase reverse AC signal. The flywheel motor drives the crankshaft based on the three-phase reverse AC signal to increase the crankshaft's output torque. This enables engine assistance or engine starting.

[0115] This application provides another power supply system for special vehicles, the system comprising:

[0116] The system comprises a flywheel motor, a power conversion module, a power supply control module, a first power supply interface, a second power supply interface, and a communication bus. The flywheel motor module includes a flywheel motor and a converter circuit. The power conversion module includes an inverter and a second DC-DC converter. The power supply control module is connected to the control terminals of the converter circuit, the inverter, and the second DC-DC converter via the communication bus. The rotor of the flywheel motor replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle. The stator of the flywheel motor is mounted on the engine housing and connected to the first terminal of the converter circuit. The second terminal of the converter circuit is connected to the input terminals of the inverter, the second DC-DC converter, and the first power supply interface. The output terminal of the inverter is connected to an AC interface. The output terminal of the second DC-DC converter is connected to a DC interface.

[0117] The power supply control module is used to acquire the operating mode of the special vehicle, and when the operating mode of the special vehicle is the first type mode, generate a first control signal and a second control signal; the second control signal includes a fifth sub-signal and a sixth sub-signal.

[0118] The flywheel motor is used to generate a three-phase AC signal based on the torque output from the crankshaft and output it to the converter circuit.

[0119] The converter circuit is used to respond to the first control signal to convert the three-phase AC signal into a first target DC signal and provide it to the first power supply interface, the input terminal of the inverter and the input terminal of the second DC converter, so as to provide the first target DC signal to the first load corresponding to the first power supply interface;

[0120] The inverter is used to respond to the fifth sub-signal by performing a first signal conversion on the first target DC signal to obtain the target AC signal and providing it to the AC interface, so as to provide the target AC signal to the AC load.

[0121] The second DC-DC converter is used to perform a second signal transformation on the first target signal in response to the sixth sub-signal to obtain the second target DC signal and provide it to the DC interface so as to provide the second target DC signal to the DC load.

[0122] In some implementations, the DC interface and AC interface are respectively a 24V DC interface and a 380V / 220V AC interface. Correspondingly, the DC load and AC load are respectively a 24V DC load and a 380V / 220V AC load.

[0123] In this embodiment, since the second control signal includes a fifth sub-signal and a sixth sub-signal, the inverter, in response to the fifth sub-signal, performs a first signal conversion on the first target DC signal to obtain the target AC signal, which is then provided to the AC interface to supply the target AC signal to the AC load. The second DC converter, in response to the sixth sub-signal, performs a second signal conversion on the first target signal to obtain the second target DC signal, which is then provided to the DC interface to supply the second target DC signal to the DC load. This allows for the supply of power to both the DC and AC loads.

[0124] Figure 2 A schematic block diagram of a flywheel motor system provided in this application embodiment is shown below. Figure 2 As shown, the flywheel motor power supply system mainly includes:

[0125] Flywheel motor 20: Flywheel motor 201, Pulse-Width Modulation (PWM) reversible rectifier module 202, AC 1 cable 203, DC 1 cable 204, bidirectional DC / DC module 205;

[0126] Power conversion module 21: Inverter module 212, 24V DC / DC module 213, 48V cable 214, 380V / 220V AC cable 215, 380V / 220V AC interface 216, 24V DC cable 217, 24V DC interface 218, 48V DC interface 211; Battery module 22; CAN bus 23; Integrated power control module 24.

[0127] The flywheel motor 201 mainly consists of a stator and a rotor. The stator is mounted on the engine housing, and the rotor replaces the original flywheel and is directly connected to the engine crankshaft.

[0128] The PWM reversible rectifier module 202 can realize synchronous rectification control during motor control and power generation;

[0129] The bidirectional DC / DC module 205 can use a BUCK circuit to step down the voltage when the flywheel motor system is generating electricity, so that the input bidirectional DC / DC voltage is stabilized at 48V. When the flywheel motor system is motoring, a Boost circuit is used to boost the 48V to the working voltage of the flywheel motor 201.

[0130] Inverter module 212 converts 48V DC power into 380V / 220V AC power to power vehicle-mounted electrical equipment.

[0131] The 24V DC / DC module 213 reduces the 48V power to 24V to power other 24V devices in the vehicle.

[0132] The power conversion module 21 mainly converts 48V DC power into 380 / 220V AC power and 24V DC voltage through inverter module 212 and 24VDC / DC module 213 respectively, and provides 380V / 220V AC power and 48V and 24V DC power to the vehicle equipment through 380V / 220V AC interface 216 and 24VDC interface 218 respectively.

[0133] Based on the above embodiments, this application provides a special vehicle system equipped with a flywheel motor system, such as... Figure 3 As shown, this special vehicle system includes not only, but also, Figure 2 The flywheel power supply system shown also includes a power transmission module (not included). Figure 3 (as shown in the middle);

[0134] The powertrain module mainly includes: engine controller 31, engine 32, clutch 33, transmission 34, transfer case 35, middle drive axle 36, rear drive axle 37, front drive axle 38, right front wheel 39, left front wheel 310, right middle wheel 311, left middle wheel 312, right rear wheel 313, and left rear wheel 314. Engine power is controlled by clutch 33 to disconnect and connect with the drive axles (including middle drive axle 36, rear drive axle 37, front drive axle 38, and right front wheel 39). When the special vehicle is parked and generating electricity, clutch 33 is disengaged, and the integrated power control module 24 sends throttle commands to the engine controller 31 via CAN bus 23 to control the engine 31 to operate in its optimal state. When the special vehicle is in motion and generating electricity, engine 32 is engaged with clutch 33, and the engine 32 outputs torque to the drive axles through clutch 33, simultaneously driving the flywheel motor 201 to generate electricity.

[0135] Understandably, since special vehicles not only need to generate electricity but also need to move, the flywheel motor 201, mounted on the crankshaft of the engine 32, requires its rotor to be mechanically connected to the transmission 34 via a clutch 33. This allows the power from the crankshaft of the engine 32 to be transmitted to the transmission 34 via the clutch 33. Then, the power output from the transmission 34 is transmitted to the middle drive axle 36, the rear drive axle 37, and the front drive axle 38 via the transfer case 35. The flywheel motor 201 is also electrically connected to the PWM reversible rectifier module 202 via AC cable 203, allowing the flywheel to... The AC power output from the motor is rectified into DC power, which fluctuates with the speed of the engine 32. Therefore, it is electrically connected to the bidirectional DC / DC module 205 through AC 1 cable 204. The DC power is stabilized at 48V through BUCK step-down control. At the same time, the bidirectional DC / DC module 205 can also work in Boost mode, which boosts the 48V battery voltage to a suitable voltage and inputs it to the PWM reversible rectifier module 202. The PWM reversible rectifier module 202 drives the flywheel motor 201 to start and assist the engine 32.

[0136] The battery module 22 is electrically connected to the bidirectional DC / DC module 105 via a 48V cable 214, and mainly provides electrical energy for engine starting and power assistance.

[0137] The integrated power control module 24 mainly communicates with other controllers in the system (including the controllers of the engine controller 31, PWM reversible rectifier module 202, bidirectional DC / DC module 105, inverter module 212 and 24V DC / DC module 213) through the CAN bus 23, and performs energy management of the system to achieve energy optimization control.

[0138] The powertrain module 2 mainly includes: engine controller 21, engine 22, clutch 23, transmission 24, transfer case 25, center drive axle 26, rear drive axle 27, front drive axle 28, right front wheel 29, left front wheel 210, right center wheel 211, left center wheel 212, right rear wheel 213, and left rear wheel 214. Engine power is controlled by the clutch to disconnect and connect with the drive axle. When the vehicle is parked and generating power, the clutch is disengaged, and the integrated power control module 6 sends throttle commands to the engine controller 21 via the CAN bus 5, controlling the engine 21 to operate in its optimal state. When the vehicle is in motion and generating power, the engine 22 clutch is engaged, and the engine power outputs torque to the drive axle through the clutch, simultaneously driving the flywheel motor 11 to generate power.

[0139] It is understandable that the main operating modes of special vehicles include: a) shutdown, b) starting mode, c) driving power generation mode, d) parking power generation mode, e) charging mode, and f) power assist mode. The conditions for direct conversion between each operating mode are shown in Table 1.

[0140] Table 1

[0141]

[0142]

[0143] Figure 4 This application provides a schematic diagram illustrating the specific operating mode conversion of a special vehicle, as shown in the embodiments. Figure 4 As shown, the specific working mode conversion of this special vehicle corresponds completely to that shown in Table 1.

[0144] Figure 5a This application provides a schematic diagram illustrating the starting mode of a special vehicle based on a flywheel motor power supply system, as shown in the embodiment of the present application. Figure 5a As shown, the starting mode of this special vehicle is... Figure 3 Based on the special vehicle system equipped with a flywheel motor system shown, when the car ignition key is turned on, the special vehicle's operating mode changes from stop mode a to start mode b (see Table 1 and...). Figure 4 The specific working process (energy flow) of the flywheel motor power supply system under the following conditions is as follows: It can be seen that when the special vehicle's working mode changes from stop mode a to start mode b, the battery module 22 supplies power to the bidirectional DC / DC module 205 (input 48V DC). The bidirectional DC / DC module 205 boosts the input 48V to the operating voltage of the flywheel motor 201 and provides the operating voltage of the flywheel motor 201 to the PWM reversible rectifier module 202. The PWM reversible rectifier module 202 inverts the operating voltage of the flywheel motor 201 to obtain three-phase AC power output to the stator (winding) of the flywheel motor 201, thereby driving the flywheel motor 201 to rotate, and thus driving the engine 32 to complete the start-up.

[0145] Understandably, the power conversion module 21 is not operational in startup mode. The energy flow of the flywheel motor power supply system is as follows: battery module 22 -- bidirectional DC / DC module 205 -- PWM reversible rectifier module 202 -- flywheel motor 201 -- motor 32.

[0146] Here, when the special vehicle is in start-up mode b, the integrated power control module 24 is also in operation. It will generate a control signal for the first mode corresponding to start-up mode b according to the special vehicle's working mode start-up mode b; and transmit the control signal of the first mode to the bidirectional DC / DC module 205 and PWM reversible rectifier module 202 in the flywheel motor 20 through the CAN bus 23.

[0147] Figure 5b This application provides a schematic diagram of the operation of a special vehicle's on-road power generation mode based on a flywheel motor power supply system, as shown in the embodiments of this application. Figure 5bAs shown, the special vehicle's on-road power generation mode is... Figure 3 Based on the special vehicle system equipped with a flywheel motor system shown, after the special vehicle starts successfully, the system checks whether the parking generator switch is open. If it determines that the parking generator switch is not open, the special vehicle's operating mode changes from starting mode b to driving generator mode c (see Table 1 and...). Figure 4 In the case of ), the specific working process (energy flow) of the flywheel motor power supply system.

[0148] As can be seen, when the special vehicle's operating mode changes from start-up mode b to driving power generation mode c, the throttle of the engine 32 is controlled by the driver. The flywheel motor 201 outputs a three-phase voltage to the PWM reversible rectifier module 202 as the engine 32's speed changes. Consequently, the DC power rectified by the PWM reversible rectifier module 202 also fluctuates with the engine 32's speed. At this time, the integrated power control module 24 can generate corresponding control signals to control the bidirectional DC / DC module 205 to stabilize its output voltage at approximately 48V. Then, the power conversion module 21 converts the 48V DC power into 380V / 220V AC power and 24V DC power.

[0149] Understandably, in driving power generation mode c, the energy flow of the flywheel motor power supply system is as follows: engine 32 -- flywheel motor 201 -- PWM reversible rectifier module 202 -- bidirectional DC / DC module 205 -- inverter module 212 / 24V DC / DC module 213 -- 380V / 220V AC interface 216 / 24V DC interface 218.

[0150] Here, after energy is output from the bidirectional DC / DC module 205 (48V DC), it can simultaneously enter the inverter module 212 and the 24V DC / DC module 213. The 48V DC entering the inverter module 212 is converted into 380V / 220V AC and output to the 380V / 220VAC interface. The 48V DC entering the 24V DC / DC module 213 is converted into 24V DC and output to the 24V DC interface 218.

[0151] Simultaneously, after energy is output from the bidirectional DC / DC module 205 (48V DC), it can also be directly output to the 48V DC interface 211 and supplied to the battery module 22 to charge the battery in the battery module 22. Of course, whether to charge depends on the battery's charge level.

[0152] Here, when the special vehicle is in driving power generation mode c, the integrated power control module 24 is also in operation. It will generate the control signal of the second mode corresponding to driving power generation mode c according to the driving power generation mode c of the special vehicle; and transmit the control signal of the second mode to the bidirectional DC / DC module 205 and PWM reversible rectifier module 202 in flywheel motor 20 and the inverter module 212 and 24VDC / DC module 213 in power conversion module 21 through CAN bus 23.

[0153] from Figure 5b It can also be seen that when the special vehicle is in the driving power generation mode c, the engine controller 31 will receive the throttle control signal input by the driver and control the output torque and speed of the engine 32 according to the throttle control signal; the flywheel motor 201 follows the change of the torque output by the engine and transmits power to the middle drive axle 36, the rear drive axle 37, and the front drive axle 38 in sequence through the clutch 33, the transmission 34, and the transfer case 35; finally, the right front wheel 39, the left front wheel 310, the right middle wheel 311, the left middle wheel 312, the right rear wheel 313, and the left rear wheel 314 are driven through the middle drive axle 36, the rear drive axle 37, and the front drive axle 38.

[0154] Figure 5c This application provides a schematic diagram illustrating the operation of an assist mode for a special vehicle based on a flywheel motor power supply system, as shown in the embodiments of this application. Figure 5c As shown, the power assist mode of this special vehicle is... Figure 3 Based on the special vehicle system equipped with a flywheel motor system shown, when the special vehicle is in driving power generation mode c, and it is determined that the vehicle is accelerating rapidly and the battery has sufficient charge (above the preset high charge threshold), the special vehicle system immediately switches from driving power generation mode c to assist mode f (see Table 1 and...). Figure 4 In the case of ), the specific working process (energy flow) of the flywheel motor power supply system.

[0155] Here, the vehicle speed and the battery charge in the battery module 22 can be monitored in real time by the integrated power control module 24. When it is determined that the vehicle is undergoing rapid acceleration (the speed change per second reaches a preset speed threshold) and the battery charge is greater than a preset high charge threshold, the special vehicle system is determined to enter the power assist mode f.

[0156] Understandably, after completing the 32-level engine power assist, the special vehicle enters the driving power generation mode c.

[0157] As can be seen, when the special vehicle's operating mode changes from driving power generation mode c to assist mode f, the battery module 22 supplies power to the bidirectional DC / DC module 205 (input 48V DC power). The bidirectional DC / DC module 205 boosts the input 48V power to the operating voltage of the flywheel motor 201 and provides the operating voltage of the flywheel motor 201 to the PWM reversible rectifier module 202. The PWM reversible rectifier module 202 inverts the operating voltage of the flywheel motor 201 to obtain three-phase AC power output to the stator (winding) of the flywheel motor 201, thereby driving the flywheel motor 201 to rotate, and thus driving the engine 32 to achieve assistance.

[0158] Understandably, in assist mode f, the energy flow of the flywheel motor power supply system is as follows: battery module 22 -- bidirectional DC / DC module 205 -- PWM reversible rectifier module 202 -- flywheel motor 201 -- engine 32.

[0159] Here, when the special vehicle is in the power assist mode f, the integrated power control module 24 is also in operation, which will generate the control signal of the third mode corresponding to the power assist mode f; and transmit the control signal of the third mode to the bidirectional DC / DC module 205 and the PWM reversible rectifier module 202 in the flywheel motor 20 through the CAN bus 23.

[0160] Understandably, when the special vehicle is in power-assisted mode f and is in motion, the engine controller 31 receives the throttle control signal input by the driver and controls the output torque and speed of the engine 32 according to the throttle control signal. The flywheel motor 201 follows the torque changes output by the engine and transmits power to the middle drive axle 36, the rear drive axle 37, and the front drive axle 38 in sequence through the clutch 33, the transmission 34, and the transfer case 35. Finally, the right front wheel 39, the left front wheel 310, the right middle wheel 311, the left middle wheel 312, the right rear wheel 313, and the left rear wheel 314 are driven through the middle drive axle 36, the rear drive axle 37, and the front drive axle 38.

[0161] from Figure 5c It can also be seen that when the special vehicle is in the power assist mode f, the battery module 22 will also provide a 48V DC input to the bidirectional DC / DC module 205, and the 24V DC / DC module 213 will convert the 48V DC input into a 24V DC output to the 24V DC interface 218.

[0162] Figure 5d This application provides a schematic diagram of the operation of a special vehicle's parking power generation mode based on a flywheel motor power supply system, as shown in the embodiments of this application. Figure 5d As shown, the parking power generation mode of this special vehicle is... Figure 3Based on the special vehicle system equipped with a flywheel motor system shown, after the special vehicle starts successfully, the system determines whether the parking generator switch is open. If the parking generator switch is confirmed to be open, the special vehicle's operating mode changes from starting mode b to parking generator mode d (see Table 1 and...). Figure 4 In the case of ), the specific working process (energy flow) of the flywheel motor power supply system.

[0163] As can be seen, when the special vehicle's operating mode changes from start-up mode b to parking power generation mode d, the integrated power control module 24 can send throttle control commands to the engine controller 31 via the CAN bus 23 according to the current system load, controlling the engine 32 to operate in the optimal fuel operating state and outputting torque in the optimal fuel operating state to the flywheel motor 201. Thus, the flywheel motor 201 outputs the corresponding generated three-phase AC power to the PWM reversible rectifier module 202. After rectification by the PWM reversible rectifier module 202, the voltage is stabilized at 48V by the bidirectional DC / DC module 205. Then, the power conversion module 21 converts the 48V DC power into 380V / 220V AC power and 24V DC power, which are output to the 380V / 220V AC interface and the 24V DC interface 218 respectively.

[0164] Since the energy flow direction of the flywheel motor power supply system is the same in parking power generation mode d and driving power generation mode c, it will not be explained in detail here.

[0165] Understandably, when the special vehicle is in parking power generation mode d, it is parked. Therefore, the engine controller 31 will not receive the throttle control signal input by the driver, and thus will not drive the right front wheel 39, left front wheel 310, right middle wheel 311, left middle wheel 312, right rear wheel 313, and left rear wheel 314.

[0166] Figure 5e This application provides a schematic diagram of the charging mode operation of a special vehicle based on a flywheel motor power supply system, as shown in the embodiment of the present application. Figure 5e As shown, the charging mode e of this special vehicle is... Figure 3 Based on the special vehicle system equipped with a flywheel motor system shown, when the special vehicle is in driving power generation mode c or parking power generation mode d, and the battery charge is determined to be low (below a preset low charge threshold), the special vehicle system immediately switches from driving power generation mode c or parking mode d to charging mode e (see Table 1 and...). Figure 4 In the case of ), the specific working process (energy flow) of the flywheel motor power supply system.

[0167] Here, the battery level in the battery module 22 can be monitored in real time by the integrated power control module 24. When the battery level is determined to be lower than the preset low battery threshold, the special vehicle system is determined to enter charging mode e.

[0168] It can be seen that when the special vehicle changes its working mode from driving power generation mode c or parking mode d to charging mode e, the flywheel motor 201, in addition to supplying power to the 48V DC interface 211, 380V / 220V AC interface and 24V DC interface 218 respectively, also needs to control the charging current during the charging process. When the charging is completed, it will automatically enter driving power generation mode c or parking power generation mode d.

[0169] Since the energy flow of the flywheel motor 201 to the 48V DC interface 211, the 380V / 220V AC interface and the 24V DC interface 218 is the same as that in driving power generation mode c and parking mode d, the only difference is that the 48V DC power output by the bidirectional DC / DC module 205 can simultaneously power the battery module 22.

[0170] Based on the above embodiments, this application provides a power supply method applied to the power supply system of special vehicles, such as... Figure 6 As shown, the power supply method includes the following steps:

[0171] Step S601: The power supply control module obtains the working mode of the special vehicle, and when the working mode of the special vehicle is the first type mode, it generates a first control signal and a second control signal.

[0172] Step S602: The flywheel motor generates a three-phase AC signal based on the torque output from the crankshaft and outputs it to the converter circuit;

[0173] Step S603: In response to the first control signal, the converter circuit converts the three-phase AC signal into a first target DC signal and provides it to the first power supply interface and the power conversion module, so as to provide the first target DC signal to the first load corresponding to the first power supply interface;

[0174] Step S604: The power conversion module responds to the second control signal by performing a first signal conversion on the first target DC signal to obtain a target AC signal; performs a second signal conversion on the first target signal to obtain a second target DC signal, and provides the target AC signal and the second target DC signal to the second power supply interface to provide the target AC signal and the second target DC signal to the second load corresponding to the second power supply interface.

[0175] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A power supply system, characterized in that, Applied to special vehicles; The power supply system includes: a flywheel motor module, a power conversion module, a power supply control module, a first power supply interface, a second power supply interface, and a communication bus; the flywheel motor module includes a flywheel motor and a converter circuit; the power supply control module is connected to the control terminals of the converter circuit and the power conversion module respectively through the communication bus; the rotor of the flywheel motor replaces the engine flywheel and is mounted on the crankshaft of the engine of the special vehicle; the stator of the flywheel motor is mounted on the housing of the engine and connected to the first terminal of the converter circuit; the second terminal of the converter circuit is connected to the first terminal of the power conversion module and the first power supply interface; the second terminal of the power conversion module is connected to the second power supply interface; The power supply control module is used to acquire the operating mode of the special vehicle, and when the operating mode of the special vehicle is a first type of mode indicating power generation, it generates a first control signal and a second control signal. The flywheel motor is used to generate a three-phase AC signal based on the torque output from the crankshaft and output it to the converter circuit. The converter circuit is used to respond to the first control signal to convert the three-phase AC signal into a first target DC signal and provide it to the first power supply interface and the power conversion module, so as to provide the first target DC signal to the first load corresponding to the first power supply interface. The power conversion module is configured to perform a first signal conversion on the first target DC signal in response to the second control signal to obtain a target AC signal; perform a second signal conversion on the first target DC signal to obtain a second target DC signal; and provide the target AC signal and the second target DC signal to the second power supply interface to provide the target AC signal and the second target DC signal to the second load corresponding to the second power supply interface.

2. The power supply system according to claim 1, characterized in that, It also includes a battery module, which includes a battery control circuit and a storage battery; the battery control circuit is connected between the second terminal of the converter circuit and the storage battery; the power supply control module is connected to the control terminal of the battery control circuit through the communication bus. The power supply control module is used to acquire the working mode of the special vehicle and the power of the battery. When the working mode of the special vehicle is the first type of mode and the power of the battery is less than or equal to the first threshold, a third control signal is generated. The converter circuit is also used to provide the first target DC signal to the battery control circuit; The battery control circuit is configured to, in response to the third control signal, connect the second terminal of the converter circuit to the battery so as to charge the battery via the first target DC signal.

3. The power supply system according to claim 2, characterized in that, The power supply control module is used to generate the third control signal and the fourth control signal when the special vehicle is in the second type of working mode and the battery charge is greater than or equal to the second threshold. The battery control circuit is used to respond to the third control signal to connect the second terminal of the converter circuit to the battery, so that the battery provides a reverse DC signal to the converter circuit. The converter circuit is used to respond to the fourth control signal, adjust the amplitude of the reverse DC signal to obtain a DC signal with a first amplitude, and invert the first DC signal to obtain three reverse AC signals, which are then transmitted to the flywheel motor. The flywheel motor is used to drive the crankshaft based on the three opposing AC signals to increase the output torque of the crankshaft.

4. The power supply system according to any one of claims 1 to 3, characterized in that, The rotor of the flywheel motor is also connected to the transmission of the special vehicle via the clutch of the special vehicle. The flywheel motor is also used to transmit the torque output by the crankshaft to the clutch, so that the torque can be transmitted to the transmission through the clutch, and then to the drive axle of the special vehicle to achieve control of the special vehicle.

5. The power supply system according to claim 3, characterized in that, The converter circuit includes a reversible rectifier and a first DC-DC converter; the stator of the flywheel motor is connected to the first terminal of the reversible rectifier; the second terminal of the reversible rectifier is connected to the first terminal of the first DC-DC converter; the second terminal of the first DC-DC converter is connected to the first terminal of the power conversion module, the first power supply interface, and the first terminal of the battery control circuit; the power supply control module is connected to the reversible rectifier and the first DC-DC converter through the communication bus; the first control signal includes a first sub-signal and a second sub-signal; The flywheel motor is used to generate a three-phase AC signal based on the torque output from the crankshaft and output it to the reversible rectifier. The reversible rectifier is used to synchronously rectify the three-phase AC signal in response to the first sub-signal to obtain a DC signal of the first amplitude. The first DC converter is used to adjust the amplitude of the first amplitude DC signal in response to the second sub-signal to obtain the first target DC signal and provide it to the first power supply interface and the power conversion module, so as to provide the first target DC signal to the first load corresponding to the first power supply interface; The battery control circuit is configured to, in response to the third control signal, connect the first DC converter to the battery so as to charge the battery via the first target DC signal.

6. The power supply system according to claim 5, characterized in that, The fourth control signal includes a third sub-signal and a fourth sub-signal; The battery control circuit is used to respond to a third control signal to connect the first DC converter and the battery, so that the battery provides a reverse DC signal to the first DC converter. The first DC-DC converter is used to adjust the amplitude of the reverse DC signal in response to the third sub-signal to obtain a DC signal with the first amplitude. The reversible rectifier is used to perform three-phase inversion on the first amplitude DC signal in response to the fourth sub-signal to obtain the three-phase reverse AC signal.

7. The power supply system according to any one of claims 1 to 3, characterized in that, The power conversion module includes an inverter and a second DC-DC converter; the input terminals of the inverter and the second DC-DC converter are both connected to the second terminal of the converter circuit; the second power supply interface includes an AC interface and a DC interface; the second load includes a DC load and an AC load; the power supply control module is connected to the control terminals of the inverter and the second DC-DC converter respectively through the communication bus; the second control signal includes a fifth sub-signal and a sixth sub-signal; the output terminal of the inverter is connected to the AC interface; the output terminal of the second DC-DC converter is connected to the DC interface; The converter circuit is used to respond to the first control signal to convert the three-phase AC signal into the first target DC signal and provide it to the first power supply interface, the input terminal of the inverter and the input terminal of the second DC converter, so as to provide the first target DC signal to the first load corresponding to the first power supply interface; The inverter is used to respond to the fifth sub-signal by performing a first signal conversion on the first target DC signal to obtain the target AC signal and providing it to the AC interface, so as to provide the target AC signal to the AC load. The second DC-DC converter is used to perform a second signal conversion on the first target DC signal in response to the sixth sub-signal, to obtain the second target DC signal and provide it to the DC interface, so as to provide the second target DC signal to the DC load.

8. The power supply system according to claim 7, characterized in that, The first power supply interface, the DC interface, and the AC interface are respectively a 48V DC interface, a 24V DC interface, and a 380V / 220V AC interface; Correspondingly, the first load, DC load, and AC load are 48V DC load, 24V DC load, and 380V / 220V AC load, respectively.

9. The power supply system according to claim 3, characterized in that, The first type of mode includes at least a driving power generation mode and a parking power generation mode; the second type of mode includes at least a starting mode and a battery-assisted mode.

10. A power supply method, characterized in that, Applied to the power supply system according to any one of claims 1 to 9, the method comprises: The power supply control module acquires the operating mode of the special vehicle, and when the operating mode of the special vehicle is the first type mode, it generates a first control signal and a second control signal. The flywheel motor generates a three-phase AC signal based on the torque output from the crankshaft and outputs it to the converter circuit; The converter circuit responds to the first control signal by converting the three-phase AC signal into a first target DC signal and providing it to the first power supply interface and the power conversion module, so as to provide the first target DC signal to the first load corresponding to the first power supply interface; The power conversion module responds to the second control signal by performing a first signal conversion on the first target DC signal to obtain a target AC signal; performs a second signal conversion on the first target DC signal to obtain a second target DC signal, and provides the target AC signal and the second target DC signal to the second power supply interface to provide the target AC signal and the second target DC signal to the second load corresponding to the second power supply interface.

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