Power generation system and extended-range automobile

Abstract

The utility model provides a power generation system and a range extending type automobile, the power generation system is used for the range extending type automobile, and the power generation system comprises a power generator, an alternating current-direct current circuit, a direct current-direct current circuit and a main control chip. The input end of the AC-to-DC circuit is electrically connected with the generator, and the output end is electrically connected with a high-voltage bus of the extended-range automobile; the input end of the DC-to-DC circuit is electrically connected with the output end of the AC-to-DC circuit, and the output end of the DC-to-DC circuit is used for being electrically connected with low-voltage electric equipment; the main control chip is connected with the control end of the AC-to-DC circuit and the control end of the DC-to-DC circuit; wherein the AC-to-DC circuit responds to a control signal of the main control chip, and converts a first AC voltage signal into a first DC voltage signal; the DC-to-DC circuit responds to a control signal of the main control chip and converts the first DC voltage signal into a second DC voltage signal. In this way, the overall size and the manufacturing cost of the power generation system can be effectively reduced.

Description

Technical Field

[0001] This application relates to the field of power generation systems for range-extended electric vehicles, and particularly to a power generation system and a range-extended electric vehicle. Background Technology

[0002] With the rapid development of new energy vehicles, existing new energy vehicles include range-extended electric vehicles (REEVs) and pure electric vehicles (i.e., conventional new energy vehicles). Compared to conventional new energy vehicles, REEVs are equipped with an additional power generation system to provide electricity for their range. However, existing power generation systems suffer from drawbacks such as large size and high cost. Overcoming these shortcomings is a pressing technical problem that needs to be solved. Utility Model Content

[0003] This application provides a power generation system for a range-extended electric vehicle. The power generation system includes: a generator, an AC-to-DC circuit, a DC-to-DC circuit, and a main control chip. The generator outputs a first AC voltage signal. The input terminal of the AC-to-DC circuit is electrically connected to the generator, and the output terminal is electrically connected to the high-voltage bus of the range-extended electric vehicle. The AC-to-DC circuit converts the first AC voltage signal into a first DC voltage signal. The input terminal of the DC-to-DC circuit is electrically connected to the output terminal of the AC-to-DC circuit, and the output terminal is electrically connected to low-voltage electrical equipment. The DC-to-DC circuit converts the first DC voltage signal into a second DC voltage signal. The main control chip is connected to the control terminals of both the AC-to-DC and DC-to-DC circuits. The AC-to-DC circuit converts the first AC voltage signal into a first DC voltage signal in response to a control signal from the main control chip. The DC-to-DC circuit converts the first DC voltage signal into a second DC voltage signal in response to a control signal from the main control chip.

[0004] In some embodiments, the power generation system further includes a filter component, wherein a first signal terminal of the filter component is electrically connected to the output terminal of the AC-to-DC circuit, and a second signal terminal is electrically connected to the high-voltage bus. The filter component is used to filter the electrical signal between the high-voltage bus and the AC-to-DC circuit.

[0005] In some embodiments, the power generation system further includes: a voltage stabilizing capacitor, wherein a first signal terminal of the voltage stabilizing capacitor is connected to the positive terminal of the output terminal of the AC-to-DC circuit, and a second signal terminal is connected to the negative terminal of the output terminal of the AC-to-DC circuit.

[0006] In some embodiments, the power generation system further includes a fuel heater connected to the output of a DC-to-DC circuit, the fuel heater being used to heat the fuel required for the generator to output a first AC voltage signal.

[0007] In some embodiments, the power generation system further includes: a power management circuit electrically connected to the power input terminal of the AC-to-DC circuit, the power input terminal of the DC-to-DC circuit, and the power input terminal of the main control chip, for providing operating voltage to the AC-to-DC circuit, the DC-to-DC circuit, and the main control chip.

[0008] In some embodiments, the power management circuit includes: a conversion circuit electrically connected to the power input terminal of the AC-to-DC circuit, the power input terminal of the DC-to-DC circuit, and the power input terminal of the main control chip, respectively, the conversion circuit being used to receive the initial supply voltage; and a processing circuit connected to the control terminal of the conversion circuit, used to control the conversion circuit to convert the initial supply voltage into the operating voltage corresponding to the AC-to-DC circuit, the DC-to-DC circuit, and the main control chip.

[0009] In some embodiments, the power generation system further includes: a communication transceiver connected to the processing circuit and communicating with the vehicle infotainment system of the range-extended vehicle; the processing circuit communicates with the vehicle infotainment system of the range-extended vehicle through the communication transceiver to send a first communication message to the vehicle infotainment system, the first communication message including at least the status information of the initial power supply voltage.

[0010] In some embodiments, the AC-to-DC circuit includes: a first bridge rectifier circuit, the input terminal of which is electrically connected to a generator, and the output terminal of which is electrically connected to a high-voltage bus and the input terminal of the DC-to-DC circuit; and a first drive circuit, which is connected to the control terminal, the conversion circuit, and the main control chip of the first bridge rectifier circuit, and drives the first bridge rectifier circuit to convert the first AC voltage signal into a first DC voltage signal in response to the control signal of the main control chip.

[0011] In some embodiments, the DC-to-DC circuit includes: a full-bridge inverter circuit, the input terminal of which is electrically connected to the output terminal of the AC-to-DC circuit; a transformer circuit, the input terminal of which is electrically connected to the output terminal of the full-bridge inverter circuit; a second bridge rectifier circuit, the input terminal of which is electrically connected to the output terminal of the transformer circuit, and the output terminal of which is used to be electrically connected to low-voltage electrical equipment; and a second drive circuit, which is connected to the control terminal of the full-bridge inverter circuit, the control terminal of the second bridge rectifier circuit, the main control chip, and the conversion circuit, respectively, for driving the full-bridge inverter circuit to convert a first DC voltage signal into a second AC voltage signal based on the control of the main control chip, and driving the second bridge rectifier circuit to convert the second AC voltage signal after being transformed and adjusted by the transformer circuit into a second DC voltage signal.

[0012] In some embodiments, the power generation system further includes: a data acquisition circuit connected to the main control chip for acquiring operating condition information, the operating condition information including one or more combinations of generator resolver information, temperature information, voltage information, and voltage information at the output terminal of the DC-DC converter; and a communication transceiver connected to the main control chip and communicating with the vehicle infotainment system of the range-extended vehicle, the main control chip communicating with the vehicle infotainment system of the range-extended vehicle through the communication transceiver to send a second communication message to the vehicle infotainment system, the second communication message including at least the operating condition information.

[0013] This application provides a range-extended electric vehicle that includes the power generation system described in any of the above embodiments.

[0014] The beneficial effects of this embodiment are as follows: The power generation system is equipped with both a DC-to-DC circuit and an AC-to-DC circuit, enabling the power generation system to provide high-voltage power to the range-extended vehicle. Simultaneously, the power generation system can control the DC-to-DC circuit via the main control chip to convert the electrical energy generated by the generator into the electrical energy required by the low-voltage electrical equipment of the range-extended vehicle, thus meeting the low-voltage power demand of the range-extended vehicle and effectively enhancing the functional versatility of the power generation system. Furthermore, the DC-to-DC circuit and the AC-to-DC circuit share the same main control chip. This reuse of the main control chip used for generator power generation control as the main control element of the DC-to-DC circuit effectively reduces the number of components in the power generation system, thereby reducing the manufacturing cost of the power generation system 10. It also effectively improves the structural integration of the power generation system, effectively reducing the overall size of the power generation system and thus effectively reducing the difficulty of arranging the power generation system on the range-extended vehicle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the circuit structure of an embodiment of the power generation system of this application;

[0016] Figure 2 yes Figure 1 The diagram shows a detailed circuit structure of the power generation system. Detailed Implementation

[0017] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0018] The terms "first" and "second" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise expressly specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or apparatus.

[0019] like Figure 1 and Figure 2 As shown, this application provides a power generation system 10 for range-extended electric vehicles (REEVs), a type of new energy vehicle. REEVs possess existing new energy vehicle infotainment systems and are also equipped with a power generation system 10 that converts mechanical energy into electrical energy. Of course, in some embodiments, the power generation system 10 of this application can also be applied to other technical fields. Here, this paper mainly describes the power generation system 10 in the context of its application in range-extended electric vehicles.

[0020] The power generation system 10 includes: a generator 100, an AC to DC circuit 200, a DC to DC circuit 300, and a main control chip 400. Generator 100 is used to output a first AC voltage signal; the input terminal of AC-to-DC circuit 200 is electrically connected to generator 100, and the output terminal of AC-to-DC circuit 200 is electrically connected to high-voltage bus 20 of range-extended vehicle. AC-to-DC circuit 200 is used to convert the first AC voltage signal into a first DC voltage signal; the input terminal of DC-to-DC circuit 300 is electrically connected to the output terminal of AC-to-DC circuit 200, and the output terminal of DC-to-DC circuit 300 is used to connect to low-voltage electrical equipment. DC-to-DC circuit 300 is used to convert the first DC voltage signal into a second DC voltage signal; main control chip 400 is connected to the control terminals of AC-to-DC circuit 200 and DC-to-DC circuit 300; wherein, AC-to-DC circuit 200 converts the first AC voltage signal into a first DC voltage signal in response to the control signal of main control chip 400; DC-to-DC circuit 300 converts the first DC voltage signal into a second DC voltage signal (DC voltage signal V1+, DC voltage signal V1-) in response to the control signal of main control chip 400.

[0021] Specifically, the high-voltage bus 20 is a wire used to carry high-voltage electricity in the power management system of the range-extended vehicle. It is used to connect the high-voltage electricity to the high-voltage electrical equipment of the range-extended vehicle (such as the electric drive system, DC-DC conversion (DC to DC power) system, air conditioning system, etc.) so that the high-voltage electrical equipment can work normally. The generator 100 is a device used to convert the mechanical energy converted from the combustion of fuels such as gasoline and diesel into a first AC voltage signal. Of course, in some embodiments, the fuel of the generator 100 can also be other types of fuel, such as natural gas. The generator 100 performs work by burning fuel, driving the piston to reciprocate and converting the chemical energy of the fuel into the rotational mechanical energy of the crankshaft. This energy is then transmitted to the rotor input shaft of the generator 100 (which can be connected via a spline and a torsional damper). The rotational mechanical energy of the generator 100 is output to the generator rotor in the form of speed and torque. The magnetic field of the rotating rotor, combined with the stator magnetic field control of the generator 100, generates three-phase current. The controller system of the generator 100 (which includes a main control chip 400 and an AC-to-DC circuit 200) converts the three-phase current (or, in this embodiment, the first AC voltage signal) into high-voltage DC (or, in this embodiment, the first DC voltage signal) through inverter control. This high-voltage DC current is then output to the high-voltage bus 20 of the vehicle. The electrical energy can be used for the vehicle's high-voltage system (such as an electric drive system, a DC-DC conversion system, an air conditioning system, etc.). Depending on the actual operating conditions, some excess electrical energy can be input to the battery pack for energy storage.

[0022] The AC-to-DC circuit 200 converts a first AC voltage signal into a first DC voltage signal. This first DC voltage signal is then connected to the high-voltage bus 20 of the range-extended electric vehicle (REEV) to provide driving power to the vehicle's drive motor or as a charging power source for the vehicle's battery pack. The input terminal of the DC-to-DC circuit 300 is connected to the connection point between the output terminal of the AC-to-DC circuit 200 and the high-voltage bus 20. Thus, the DC-to-DC circuit 300 can convert the first DC voltage signal at its output terminal into a lower-voltage second DC voltage signal for use by low-voltage electrical equipment. It should be noted that since the input terminal of the DC-to-DC circuit 300 is connected to the connection point between the high-voltage bus 20 and the output terminal of the AC-to-DC circuit 200, even when the generator 100 is not operating, the input terminal of the DC-to-DC circuit 300 can also discharge through the battery pack of the REEV to the high-voltage bus 20, thereby converting the DC voltage signal from the high-voltage bus 20 into a second DC voltage signal for use by low-voltage electrical equipment.

[0023] Compared to conventional new energy vehicles, range-extended electric vehicles (REEVs) are equipped with an additional power generation system 10. This increases the number of low-voltage electrical devices on the vehicle, thus making the low-voltage power demand of REEVs greater than that of conventional new energy vehicles. To meet the low-voltage power requirements of REEVs, such as the fuel heater of the generator 100, the power generation system 10 typically requires a separate low-voltage power supply circuit without significantly impacting the vehicle's original infotainment system.

[0024] Unlike existing technologies, in this embodiment, the power generation system 10 is equipped with both a DC-to-DC circuit 300 and an AC-to-DC circuit 200. This allows the power generation system 10 to provide high-voltage power to the range-extended electric vehicle (REEV), while simultaneously controlling the DC-to-DC circuit 300 via the main control chip 400 to convert the electrical energy generated by the generator 100 into the electrical energy required by the low-voltage electrical equipment of the REEV, thus meeting the low-voltage power needs of the REEV and effectively enhancing the functional versatility of the power generation system 10. Furthermore, the DC-to-DC circuit 300 and the AC-to-DC circuit 200 share the same main control chip 400. This reuses the main control chip 400, which is used for generator 100 power generation control, as the main control element of the DC-to-DC circuit 300. This effectively reduces the number of components in the power generation system 10, thereby reducing manufacturing costs and increasing structural integration, resulting in a smaller overall size and easier placement of the power generation system 10 in the REEV.

[0025] like Figure 1 and Figure 2 As shown, in some embodiments, the power generation system 10 further includes a filter component 500. The first signal terminal of the filter component 500 is electrically connected to the output terminal of the AC-to-DC circuit 200, and the second signal terminal of the filter component 500 is electrically connected to the high-voltage bus 20. The filter component 500 is used to filter the electrical signal between the high-voltage bus 20 and the AC-to-DC circuit 200. The circuit connection structure of the filter component 500 in the power generation system 10 can be specifically described in [reference needed]. Figure 2 As shown, this article will not go into further detail here.

[0026] Specifically, interference signals generated during the operation of AC-to-DC circuit 200 and DC-to-DC circuit 300 are mixed in with the electrical signals. If these interference signals are not filtered out, they will be transmitted along the high-voltage bus 20 to the power management system and the internal electronic equipment of the range-extended vehicle, thereby interfering with the normal operation of the power management system and internal electronic equipment, and consequently affecting the working stability and safety of the range-extended vehicle. The filter component 500 is used to filter the electrical signals between the high-voltage bus 20 and the output terminal of the AC-to-DC circuit 200, as well as the electrical signals between the high-voltage bus 20 and the input terminal of the DC-to-DC circuit 300, to reduce the interference signals generated by the generator system 10 during operation on the power management system, thereby effectively improving the working stability of the range-extended vehicle. The filter component 500 is placed between the high-voltage bus 20 and the output terminal of the AC-to-DC circuit 200, and the input terminal of the DC-to-DC circuit 300 is connected to the output terminal of the AC-to-DC circuit 200. This allows the DC-to-DC circuit 300 and the AC-to-DC circuit 200 to share the filter component 500, thereby effectively reducing the number of components in the power generation system 10. This effectively reduces the manufacturing cost of the power generation system 10 and also effectively improves the structural integration of the power generation system 10, thereby effectively reducing the overall size of the power generation system 10.

[0027] like Figure 1 and Figure 2 As shown, in some embodiments, the power generation system 10 further includes a voltage regulator capacitor C4, the first signal terminal of which is connected to the positive terminal of the output terminal of the AC-to-DC circuit 200, and the second signal terminal of which is connected to the negative terminal of the output terminal of the AC-to-DC circuit 200. Specifically, the specific circuit connection structure of the voltage regulator capacitor C4 and the AC-to-DC circuit 200 can be found in [reference needed]. Figure 2 As shown, this will not be elaborated further here. The voltage regulator capacitor C4 has a voltage stabilizing function. Connecting the voltage regulator capacitor C4 between the positive and negative terminals of the AC-to-DC circuit 200 effectively improves the voltage stability between these terminals, thereby enhancing the stability of the voltage signal output from the AC-to-DC circuit 200 to the high-voltage bus 20 and the DC-to-DC circuit 300, and ultimately improving the operational stability of the power generation system 10.

[0028] Optionally, the voltage regulator capacitor C4 can be a film capacitor.

[0029] In some embodiments, the power generation system 10 further includes a fuel heater (not shown), which is connected to the output of the DC-to-DC circuit 300. The fuel heater is used to heat the fuel required for the generator 100 to output the first AC voltage signal. Specifically, the fuel heater is a device for heating the fuel of the generator 100. Because the fuel of the generator 100 may have low combustion efficiency or be difficult to burn under low-temperature conditions, the power generation system 10 may fail to generate electricity normally, which in turn may prevent the range-extended vehicle from driving or operating normally, affecting the user experience. Therefore, the power generation system 10 is equipped with a fuel heater. The DC-to-DC circuit 300 can convert the first DC voltage signal or the DC voltage signal output from the battery pack into the voltage signal required by the fuel heater, so that the fuel heater can heat the fuel, thereby effectively improving the working stability of the range-extended vehicle under low-temperature conditions.

[0030] like Figure 1 and Figure 2 As shown, in some embodiments, the power generation system 10 further includes a power management circuit 600. The power management circuit 600 is electrically connected to the power input terminal of the AC-to-DC circuit 200, the power input terminal of the DC-to-DC circuit 300, and the power input terminal of the main control chip 400, and is used to provide operating voltage to the AC-to-DC circuit 200, the DC-to-DC circuit 300, and the main control chip 400.

[0031] like Figure 1 and Figure 2As shown, specifically, in some embodiments, the power management circuit 600 includes a conversion circuit 620 and a processing circuit 610. The conversion circuit 620 is electrically connected to the power input terminals of the AC-to-DC circuit 200, the DC-to-DC circuit 300, and the main control chip 400, respectively. The conversion circuit 620 is used to input the initial supply voltage (initial supply voltage V2+, initial supply voltage V2-). The processing circuit 610 is connected to the control terminal of the conversion circuit 620 and is used to control the conversion circuit 620 to convert the initial supply voltage into the operating voltage corresponding to the AC-to-DC circuit 200, the DC-to-DC circuit 300, and the main control chip 400. The processing circuit 610 is a functional circuit with logic processing capabilities. Under the control of the processing circuit 610, the conversion circuit 620 converts the initial supply voltage into the operating voltage required by the AC-to-DC circuit 200, the DC-to-DC circuit 300, and the main control chip 400, so that the AC-to-DC circuit 200, the DC-to-DC circuit 300, and the main control chip 400 can realize the corresponding circuit functions. Among them, the AC to DC circuit 200, DC to DC circuit 300 and main control chip 400 share the power management circuit 600. This can effectively reduce the number of components in the power generation system 10, thereby effectively reducing the manufacturing cost of the power generation system 10, while also effectively improving the structural integration of the power generation system 10.

[0032] Optionally, in some embodiments, the initial supply voltage may be a second DC voltage signal output by the DC-to-DC circuit 300.

[0033] like Figure 1 and Figure 2 As shown, in some embodiments, the AC-to-DC circuit 200 includes a first bridge rectifier circuit 220 and a first drive circuit 210. The input terminal of the first bridge rectifier circuit 220 is electrically connected to the generator 100, and the output terminal is electrically connected to the high-voltage bus 20 and the input terminal of the DC-to-DC circuit 300. The first drive circuit 210 is connected to the control terminal of the first bridge rectifier circuit 220, the conversion circuit 620, and the main control chip 400. The first drive circuit 210 responds to the control signal of the main control chip 400 and drives the first bridge rectifier circuit 220 to convert the first AC voltage signal into a first DC voltage signal.

[0034] Specifically, the first driving circuit 210 is a circuit that drives the first bridge rectifier circuit 220 to operate. The conversion circuit 620 is electrically connected to the first driving circuit 210 to provide working voltage to the first driving circuit 210 under the control of the processing circuit 610. After the working voltage is applied, the first driving circuit 210 can control the first bridge rectifier circuit 220 to convert the first AC voltage signal into a first DC voltage signal based on the control signal of the main control chip 400.

[0035] like Figure 2 As shown, in some embodiments, the first bridge rectifier circuit 220 is a three-phase bridge fully controlled rectifier circuit. Specifically, the first bridge rectifier circuit 220 includes switching transistors G1, G2, G3, G4, G5, and G6. Switches G1, G2, G3, G4, G5, and G6 are connected via... Figure 2 The circuit connection shown forms the first bridge rectifier circuit 220. For detailed circuit connections, please refer to [reference needed]. Figure 2 As shown, details will not be elaborated further here. The control terminals of switching transistors G1, G2, G3, G4, G5, and G6 are connected to the first drive circuit 210. For specific circuit connections, please refer to [reference needed]. Figure 2 As shown, this will not be elaborated further in this article. The first driving circuit 210 controls the switching transistors G1, G2, G3, G4, G5 and G6 to turn on and off based on the control signals of the main control chip 400, so that the first bridge rectifier circuit 220 converts the first AC voltage signal into a first DC voltage signal.

[0036] Optionally, such as Figure 1 and Figure 2 As shown, the power generation system 10 also includes a first drive isolation circuit 900, through which the conversion circuit 620 is electrically connected to the first drive circuit 210. The first drive isolation circuit 900 is a circuit device with complete input-to-output isolation, used to improve the stability and safety of the power supply voltage output from the conversion circuit 620 to the first drive circuit 210. This ensures that the first drive circuit 210 can safely and stably perform its driving operation, while also effectively reducing interference from the first drive circuit 210 to the processing circuit 610 and the conversion circuit 620, thereby effectively improving the operational stability of the power generation system 10.

[0037] like Figure 1 and Figure 2As shown, in some embodiments, the DC-to-DC circuit 300 includes: a full-bridge inverter circuit 320, a transformer circuit 330, a second bridge rectifier circuit 340, and a second drive circuit 310. The input terminal of the full-bridge inverter circuit 320 is electrically connected to the output terminal of the AC-to-DC circuit 200; the input terminal of the transformer circuit 330 is electrically connected to the output terminal of the full-bridge inverter circuit 320; the input terminal of the second bridge rectifier circuit 340 is electrically connected to the output terminal of the transformer circuit 330, and the output terminal of the second bridge rectifier circuit 340 is used to connect to low-voltage electrical equipment; the second drive circuit 310 is connected to the control terminal of the full-bridge inverter circuit 320, the control terminal of the second bridge rectifier circuit 340, the main control chip 400, and the conversion circuit 620, respectively, and is used to drive the full-bridge inverter circuit 320 to convert the first DC voltage signal into a second AC voltage signal based on the control of the main control chip 400, and to drive the second bridge rectifier circuit 340 to convert the second AC voltage signal after being transformed and adjusted by the transformer circuit 330 into a second DC voltage signal.

[0038] Specifically, the second drive circuit 310 is a drive circuit used to drive the full-bridge inverter circuit 320 and the second bridge rectifier circuit 340. The power input terminal of the second drive circuit 310 is electrically connected to the conversion circuit 620, which provides the operating voltage to the second drive circuit 310 based on the control of the processing circuit 610, so that the second drive circuit 310 can control the operation of the full-bridge inverter circuit 320 and the second bridge rectifier circuit 340 respectively based on the control of the main control chip 400.

[0039] Optionally, such as Figure 2 As shown, the full-bridge inverter circuit 320 includes switching transistors G7, G8, G9, and G10, capacitors C1 and C2, diodes J1 and J2, and inductor L1. The second bridge rectifier circuit 340 includes switching transistors G11 and G12, capacitor C3, and inductor L2. The transformer circuit 330 includes inductors L3 and L4.

[0040] Switches G7, G8, G9, and G10, capacitors C1 and C2, diodes J1 and J2, and inductor L1 are connected via... Figure 2 The circuit connection shown constitutes a full-bridge inverter circuit 320. For detailed circuit connections, please refer to [reference needed]. Figure 2 As shown, details will not be elaborated further here. The control terminals of switching transistors G7, G8, G9, and G10 are respectively connected to the second drive circuit 310. For specific circuit connections, please refer to [reference needed]. Figure 2 As shown, details will not be elaborated further here. Switching transistors G11 and G12, capacitor C3, and inductor L2 are connected via... Figure 2The circuit connection shown forms the second bridge rectifier circuit 340. For detailed circuit connections, please refer to [reference needed]. Figure 2 As shown, details will not be elaborated further here. The control terminals of switching transistors G11 and G12 are connected to the second drive circuit 310, respectively. For specific circuit connections, please refer to [link to relevant documentation]. Figure 2 As shown, details will not be elaborated further here. Inductor L3 is connected to the output terminal of the full-bridge inverter circuit 320, and inductor L4 is coupled to inductor L3 and connected to the input terminal of the second bridge rectifier circuit 340. For specific circuit connections, please refer to [link to circuit diagram]. Figure 2 As shown, this article will not go into further detail here.

[0041] The second drive circuit 310, based on the control signals from the main control chip 400, controls the switching transistors G7, G8, G9, and G10 to turn on and off, respectively, to convert the first DC voltage signal into a second AC voltage signal. Inductors L2 and L3 are coupled to step down and adjust the second AC voltage signal. The second drive circuit 310, based on the control signals from the main control chip 400, controls the switching transistors G11 and G12 to turn on and off, respectively, to convert the step-down adjusted second AC voltage signal into a second DC voltage signal.

[0042] Optionally, such as Figure 1 and Figure 2 As shown, the power generation system 10 also includes a second drive isolation circuit 1000, through which the conversion circuit 620 is electrically connected to the second drive circuit 310. The second drive isolation circuit 1000 is a circuit device with complete electrical isolation between its input terminals. It is used to improve the stability and safety of the power supply voltage output from the conversion circuit 620 to the second drive circuit 310, ensuring that the second drive circuit 310 can safely and stably perform its driving operation, while also effectively reducing the interference of the second drive circuit 310 on the processing circuit 610 and the conversion circuit 620, thereby effectively improving the operational stability of the power generation system 10.

[0043] like Figure 1 and Figure 2 As shown, in some embodiments, the power generation system 10 further includes: a communication transceiver 700, connected to the processing circuit 610 and communicating with the vehicle infotainment system of the range-extended vehicle; the processing circuit 610 communicates with the vehicle infotainment system of the range-extended vehicle through the communication transceiver 700 to send a first communication message to the vehicle infotainment system, the first communication message including at least the status information of the initial power supply voltage.

[0044] Specifically, the processing circuit 610 communicates with the vehicle infotainment system via a communication transceiver 700, enabling the vehicle infotainment system of the range-extended electric vehicle to send control signals to the processing circuit 610 through the communication transceiver 700 to manage the power management circuit 600. Furthermore, the processing circuit 610 can send status information including the initial supply voltage, such as undervoltage or overvoltage status information, to the vehicle infotainment system through the communication transceiver 700, allowing the vehicle infotainment system to promptly obtain the initial supply voltage status information and manage the power management circuit 600, thereby effectively improving the operational stability of the power generation system 10.

[0045] like Figure 1 and Figure 2 As shown, in some embodiments, the power generation system 10 further includes a data acquisition circuit 800. The data acquisition circuit 800 is connected to the main control chip 400 and is used to acquire operating condition information, including one or more combinations of resolver information, temperature information, voltage information, and voltage information at the output terminal of the DC-DC converter 300. A communication transceiver 700 is connected to the main control chip 400 and communicates with the vehicle's infotainment system. The main control chip 400 communicates with the vehicle's infotainment system via the communication transceiver 700 to send a second communication message to the vehicle's infotainment system, the second communication message including at least the operating condition information.

[0046] Specifically, in this embodiment, the operating condition information includes resolver information, temperature information, voltage information of the generator 100, and voltage information at the output terminal of the DC-to-DC circuit 300. The acquisition circuit 800 includes a resolver sampling circuit 810, a high-voltage sampling circuit 820, a temperature sampling circuit 830, and a low-voltage sampling circuit 840. The resolver sampling circuit 810, high-voltage sampling circuit 820, temperature sampling circuit 830, and low-voltage sampling circuit 840 are respectively connected to the main control chip 400. The resolver sampling circuit 810 is used to acquire resolver information of the generator 100, the high-voltage sampling circuit 820 is used to acquire voltage information of the generator 100, the temperature sampling circuit 830 is used to acquire temperature information of the generator 100, and the low-voltage sampling circuit 840 is used to acquire voltage information at the output terminal of the DC-to-DC circuit 300.

[0047] The voltage information of generator 100 includes feedback information containing the first AC voltage signal output by generator 100. The voltage information at the output terminal of DC-to-DC circuit 300 includes feedback information containing the second DC voltage signal.

[0048] The main control chip 400 communicates with the vehicle's infotainment system via a communication transceiver 700. This allows the vehicle's infotainment system to send control information to the main control chip 400 through the transceiver 700 for management and control. Furthermore, the main control chip 400 can send operating status information to the vehicle's infotainment system through the transceiver 700, enabling the system to obtain this information promptly and manage the power management circuit 600, thereby effectively improving the operational stability of the generator system 10. For example, the main control chip 400 can send the generator 100's voltage signal to the vehicle's infotainment system through the transceiver 700, allowing the system to determine whether the first AC voltage signal output by the generator 100 is normal and to manage the generator 100 accordingly.

[0049] Furthermore, the main control chip 400 and the processing circuit 610 share the communication transceiver 700, which can effectively reduce the number of components in the power generation system 10, thereby effectively reducing the manufacturing cost of the power generation system 10, while also effectively improving the structural integration of the power generation system 10.

[0050] Alternatively, the communication transceiver 700 can be a serial communication transceiver.

[0051] This application provides a range-extended electric vehicle that includes the power generation system 10 described in any of the above embodiments.

[0052] It is worth noting that the accompanying drawings are only for illustrating the structural and connection relationships of the product of this utility model, and do not limit the specific structural dimensions of the product of this utility model.

[0053] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A power generation system, characterized in that, For use in range-extended vehicles, the power generation system includes: A generator, used to output the first AC voltage signal; An AC-to-DC circuit is provided, wherein the input terminal of the AC-to-DC circuit is electrically connected to the generator, and the output terminal is electrically connected to the high-voltage bus of the range-extended vehicle. The AC-to-DC circuit is used to convert the first AC voltage signal into a first DC voltage signal. A DC-to-DC circuit, wherein the input terminal of the DC-to-DC circuit is electrically connected to the output terminal of the AC-to-DC circuit, and the output terminal is used to be electrically connected to low-voltage electrical equipment; the DC-to-DC circuit is used to convert the first DC voltage signal into a second DC voltage signal. The main control chip is connected to the control terminal of the AC-to-DC circuit and the control terminal of the DC-to-DC circuit. The AC-to-DC circuit responds to the control signal of the main control chip and converts the first AC voltage signal into the first DC voltage signal; the DC-to-DC circuit responds to the control signal of the main control chip and converts the first DC voltage signal into the second DC voltage signal.

2. The power generation system according to claim 1, characterized in that, The power generation system also includes: A filtering component is provided, wherein a first signal terminal of the filtering component is electrically connected to the output terminal of the AC-to-DC circuit, and a second signal terminal is electrically connected to the high-voltage bus. The filtering component is used to filter the electrical signal between the high-voltage bus and the AC-to-DC circuit.

3. The power generation system according to claim 1, characterized in that, The power generation system also includes: A voltage regulator capacitor, wherein the first signal terminal of the voltage regulator capacitor is connected to the positive terminal of the output terminal of the AC-to-DC circuit, and the second signal terminal is connected to the negative terminal of the output terminal of the AC-to-DC circuit.

4. The power generation system according to claim 1, characterized in that, The power generation system also includes: A fuel heater is connected to the output terminal of the DC-to-DC circuit, and the fuel heater is used to heat the fuel required for the generator to output the first AC voltage signal.

5. The power generation system according to claim 1, characterized in that, The power generation system also includes: The power management circuit is electrically connected to the power input terminal of the AC-to-DC circuit, the power input terminal of the DC-to-DC circuit, and the power input terminal of the main control chip, and is used to provide operating voltage for the AC-to-DC circuit, the DC-to-DC circuit, and the main control chip.

6. The power generation system according to claim 5, characterized in that, The power management circuit includes: The conversion circuit is electrically connected to the power input terminal of the AC to DC circuit, the power input terminal of the DC to DC circuit, and the power input terminal of the main control chip, respectively. The conversion circuit is used to connect to the initial power supply voltage. The processing circuit is connected to the control terminal of the conversion circuit and is used to control the conversion circuit to convert the initial power supply voltage into the operating voltage corresponding to the AC to DC circuit, the DC to DC circuit and the main control chip.

7. The power generation system according to claim 6, characterized in that, The power generation system also includes: A communication transceiver is connected to the processing circuit and also communicates with the vehicle infotainment system of the range-extended electric vehicle. The processing circuit is connected to the vehicle infotainment system of the range-extended vehicle via the communication transceiver to send a first communication message to the vehicle infotainment system. The first communication message includes at least the status information of the initial power supply voltage.

8. The power generation system according to claim 6, characterized in that, The AC-to-DC circuit includes: The first bridge rectifier circuit has its input terminal electrically connected to the generator and its output terminal electrically connected to the high-voltage bus and the input terminal of the DC-to-DC circuit. The first driving circuit is connected to the control terminal of the first bridge rectifier circuit, the conversion circuit, and the main control chip. In response to the control signal of the main control chip, it drives the first bridge rectifier circuit to convert the first AC voltage signal into a first DC voltage signal.

9. The power generation system according to claim 6, characterized in that, The DC-to-DC circuit includes: A full-bridge inverter circuit, wherein the input terminal of the full-bridge inverter circuit is electrically connected to the output terminal of the AC-to-DC circuit; A transformer circuit, wherein the input terminal of the transformer circuit is electrically connected to the output terminal of the full-bridge inverter circuit; The second bridge rectifier circuit has its input terminal electrically connected to the output terminal of the transformer circuit, and its output terminal is used to be electrically connected to the low-voltage electrical equipment. The second driving circuit is connected to the control terminal of the full-bridge inverter circuit, the control terminal of the second bridge rectifier circuit, the main control chip, and the conversion circuit, respectively. It is used to drive the full-bridge inverter circuit to convert the first DC voltage signal into a second AC voltage signal based on the control of the main control chip, and to drive the second bridge rectifier circuit to convert the second AC voltage signal after being transformed and adjusted by the transformer circuit into a second DC voltage signal.

10. The power generation system according to claim 1, characterized in that, The power generation system also includes: The acquisition circuit, connected to the main control chip, is used to acquire operating condition information, which includes one or more combinations of the generator's resolver information, temperature information, voltage information, and the voltage information at the output terminal of the DC-to-DC circuit. A communication transceiver is connected to the main control chip and to the vehicle infotainment system of the range-extended vehicle. The main control chip communicates with the vehicle infotainment system of the range-extended vehicle through the communication transceiver to send a second communication message to the vehicle infotainment system. The second communication message includes at least the operating condition information.

11. A range-extended electric vehicle, characterized in that, Includes the power generation system as described in any one of claims 1-10.

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