Power generation system and vehicle

Abstract

The present invention provides a power generation system and a vehicle, which relate to the field of power generation technology and are used to solve the technical problems of the existing power generation system with complex structure and high cost. The power generation system includes a supercritical carbon dioxide circulation power generation device and a hydrogen energy heating power generation device; the supercritical carbon dioxide circulation power generation device includes a heater, and the heater includes a first heating channel and a second heating channel; the hydrogen energy heating power generation device includes a combustion chamber, and the outlet end of the combustion chamber is connected to the inlet end of the first heating channel, so that the heat generated by the mixed combustion of hydrogen and oxygen in the combustion chamber is used to heat the supercritical carbon dioxide in the second heating channel. The vehicle includes the above-mentioned power generation system. The present invention is used to simplify the structure of the power generation system, reduce costs, and can effectively improve the utilization rate of energy.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation, and in particular to a power generation system and a vehicle. Background Art

[0002] Supercritical carbon dioxide cycle power generation is a new type of new energy technology with the advantages of being compact, efficient and low-cost. It has become one of the research hotspots in the power generation and energy power industry in recent years. In addition, the application of hydrogen energy in the automotive field has attracted much attention and is expected to gradually replace traditional fossil energy and become a new type of clean energy.

[0003] In the related art, a supercritical carbon dioxide cycle power generation system includes a compressor, a heating device and a turbine connected in sequence, and also includes an electric generator. The heating device is used to heat the supercritical carbon dioxide compressed by the compressor to the operating temperature of the turbine, so that the turbine expands and performs work, converting the thermal energy of the supercritical carbon dioxide into mechanical energy, so that the electric generator converts the mechanical energy into electrical energy, thereby realizing the process of power generation.

[0004] However, in the supercritical carbon dioxide cycle power generation system, in order to heat the compressed supercritical carbon dioxide to the operating temperature of the turbine, an additional heating device is required, which has a complex structure, high cost, and low energy utilization rate. Summary of the invention

[0005] In view of the above problems, an embodiment of the present invention provides a power generation system and a vehicle, which are used to simplify the structure of the power generation system, reduce costs, and effectively improve the utilization rate of energy.

[0006] In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

[0007] A first aspect of an embodiment of the present invention provides a power generation system, which includes: a supercritical carbon dioxide circulation power generation device and a hydrogen energy heat power generation device; the supercritical carbon dioxide circulation power generation device includes a heater, and the heater includes a first heating channel and a second heating channel; the hydrogen energy heat power generation device includes a combustion chamber, and the outlet end of the combustion chamber is connected to the inlet end of the first heating channel, so that the heat generated by the mixed combustion of hydrogen and oxygen in the combustion chamber is used to heat the supercritical carbon dioxide in the second heating channel.

[0008] In an optional embodiment, the hydrogen energy heating and power generation device includes a first compressor, a first electric generator and a first turbine. When the hydrogen energy heating and power generation device is started, the first electric generator is used to drive the first compressor and the first turbine to rotate, the outlet end of the first compressor is connected to the inlet end of the combustion chamber, the first compressor is used to compress air, the outlet end of the first heating channel is connected to the inlet end of the first turbine, the outlet end of the first turbine is connected to the inlet end of the combustion chamber, the first turbine is used to expand and do work, and when the work done by the first turbine is greater than the power consumption of the first compressor, the first electric generator is used to generate electricity.

[0009] In an optional embodiment, the hydrogen energy heating and power generation device also includes a first diverter and a second diverter, the outlet end of the first heating channel is connected to the first diverter, and the first outlet end of the first diverter is connected to the inlet end of the first turbine; the outlet end of the first turbine is connected to the inlet end of the second diverter, the first outlet end of the second diverter is connected to the inlet end of the combustion chamber, and the second outlet end of the second diverter is connected to the atmosphere.

[0010] In an optional embodiment, the supercritical carbon dioxide cycle power generation device also includes a cooler, a second compressor, a regenerator and a second turbine; the regenerator includes a first heat recovery channel, a second heat recovery channel and a third heat recovery channel, the outlet end of the second compressor is connected to the inlet end of the first heat recovery channel, the outlet end of the first heat recovery channel is connected to the inlet end of the second heating channel, the outlet end of the second heating channel is connected to the inlet end of the second turbine, the outlet end of the second turbine is connected to the inlet end of the second heat recovery channel, the outlet end of the second heat recovery channel is connected to the inlet end of the cooler, the outlet end of the cooler is connected to the inlet end of the second compressor, the second compressor is used to compress the supercritical carbon dioxide in the second compressor, the second turbine is used to convert the thermal energy of the supercritical carbon dioxide into mechanical energy, and the cooler is used to cool the supercritical carbon dioxide in the cooler; the second outlet end of the first diverter is connected to the inlet end of the third heat recovery channel, and the outlet end of the third heat recovery channel is connected to the atmosphere.

[0011] In an optional embodiment, the supercritical carbon dioxide cycle power generation device also includes a rotor and a second electric generator, the impeller of the second compressor, the impeller of the second turbine and the magnet of the second electric generator are all mounted on the rotor, and the second electric generator is located between the second compressor and the second turbine, and seals are provided between the second electric generator and the second compressor and the second turbine respectively.

[0012] In an optional embodiment, a cavity is provided in the seal, and one end of the seal along the radial direction of the rotor and away from the axis of the rotor has an opening connected to the cavity; the power generation system also includes an inflation system, and the inflation system is connected to the openings in each of the seals. When the rotor stops rotating, the inflation system inflates air into each of the cavities through the openings in each of the seals so that one end of each of the seals close to the axis of the rotor is in contact with a portion of the outer surface of the rotor, so as to be used to seal the radial gap between the second compressor and the rotor along the rotor, and to seal the radial gap between the second turbine and the rotor along the rotor.

[0013] In an optional implementation, the sealing element is a hollow elastic sealing ring.

[0014] In an optional implementation, one end of the hollow elastic sealing ring close to the axis of the rotor is an O-shaped structure.

[0015] The second aspect of an embodiment of the present invention provides a vehicle, comprising: a vehicle body, a drive motor, a transmission mechanism and the power generation system described in the first aspect above, wherein the power generation system supplies power to the drive motor so that the drive motor drives the transmission mechanism to transfer power to the vehicle body.

[0016] In an optional embodiment, the vehicle further includes a battery pack, which is used to supply power to the power generation system to start the power generation system when the power generation system is started; and / or the battery pack is electrically connected to the drive motor so that the drive motor drives the transmission mechanism to transmit power to the vehicle body.

[0017] Compared with the related art, the power generation system provided by the embodiment of the present invention has the following advantages:

[0018] The power generation system provided by the embodiment of the present invention connects the outlet end of the combustion chamber in the hydrogen energy heating power generation device with the inlet end of the first heating channel in the heater, so that the heat generated by the mixed combustion of hydrogen and oxygen in the combustion chamber can be used to heat the supercritical carbon dioxide in the second heating channel. In this way, there is no need to set up an additional heating device to heat the supercritical carbon dioxide in the second heating channel, which simplifies the structure of the supercritical carbon dioxide circulation power generation device and reduces the cost. In addition, the heat generated by the hydrogen energy heating power generation device is effectively utilized, thereby improving the utilization rate of energy.

[0019] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of the technical solutions, other technical problems that can be solved by the power generation system and vehicle provided by the embodiments of the present invention, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a power generation system in a vehicle provided in Embodiment 1 of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of a state of part of the structure of a supercritical carbon dioxide cycle power generation device;

[0023] Figure 3 for Figure 1 A schematic diagram of another state of a part of the structure of the supercritical carbon dioxide cycle power generation device;

[0024] Figure 4 for Figure 2 and Figure 3 Schematic diagram of the structure of the middle seal;

[0025] Figure 5 A schematic diagram of a vehicle structure provided in Embodiment 2 of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of a diversified hydrogen refueling station provided in Example 3 of the present invention.

[0027] Reference numerals:

[0028] 100-supercritical carbon dioxide cycle power generation device; 10-heater; 101-first heating channel;

[0029] 102-second heating channel; 11-second compressor; 12-second electric generator;

[0030] 13-second turbine; 14-regenerator; 141-first regenerator channel;

[0031] 142-second heat return channel; 143-third heat return channel; 15-cooler;

[0032] 151-first cooling channel; 152-second cooling channel; 16-rotor;

[0033] 17-seal; 18-seal structure; 200-hydrogen energy heating and power generation device;

[0034] 20-combustion chamber; 21-first compressor; 22-first motor generator;

[0035] 23-first turbine; 24-first flow divider; 25-second flow divider;

[0036] 26- ignition device; 300- driving motor; 400- transmission mechanism;

[0037] 500-battery pack; 600-control device; 700-power control device;

[0038] 800-Carbon dioxide filling device; 900-High-pressure hydrogen container; 1000-Cooling system;

[0039] 2000-Diversified gas filling station; 2001-Hydrogen filling device; 2002-Carbon dioxide filling device. DETAILED DESCRIPTION

[0040] In the related art, the supercritical carbon dioxide cycle power generation system includes a compressor, a heating device and a turbine connected in sequence, and also includes an electric generator. The heating device is used to heat the supercritical carbon dioxide compressed by the compressor to the operating temperature of the turbine, so that the turbine expands and works, and converts the thermal energy of the supercritical carbon dioxide into mechanical energy, so that the electric generator converts the mechanical energy into electrical energy, thereby realizing the process of power generation. However, in the supercritical carbon dioxide cycle power generation system, in order to heat the compressed supercritical carbon dioxide to the operating temperature of the turbine, an additional heating device is required, which has technical problems such as complex structure, high cost, and low energy utilization.

[0041] In order to solve the above technical problems, an embodiment of the present invention provides a power generation system and a vehicle. In the power generation system, the outlet end of the combustion chamber in the hydrogen energy heating power generation device is connected with the inlet end of the first heating channel of the heater in the supercritical carbon dioxide circulation power generation device. In this way, the heat generated by the mixed combustion of hydrogen and oxygen in the combustion chamber can be used to heat the supercritical carbon dioxide in the second heating channel. In this way, there is no need to set up an additional heating device to heat the supercritical carbon dioxide in the second heating channel, which simplifies the structure of the supercritical carbon dioxide circulation power generation device and reduces the cost. In addition, the heat generated by the hydrogen energy heating power generation device is effectively utilized, thereby improving the energy utilization rate.

[0042] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0043] Supercritical carbon dioxide (SCO2) refers to a carbon dioxide fluid whose temperature and pressure are higher than the critical temperature of 31.1°C and the critical pressure of 7.38MPa respectively.

[0044] Embodiment 1

[0045] like Figure 1 As shown, the power generation system provided by the embodiment of the present invention includes a supercritical carbon dioxide circulation power generation device 100 and a hydrogen energy heating power generation device 200; the supercritical carbon dioxide circulation power generation device 100 includes a heater 10, and the heater 10 includes a first heating channel 101 and a second heating channel 102; the hydrogen energy heating power generation device 200 includes a combustion chamber 20, and the outlet end of the combustion chamber 20 is connected to the inlet end of the first heating channel 101, so that the heat generated by the mixed combustion of hydrogen and oxygen in the combustion chamber 20 is used to heat the supercritical carbon dioxide in the second heating channel 102.

[0046] Specifically, by connecting the outlet end of the combustion chamber 20 in the hydrogen energy heating and power generation device 200 with the inlet end of the first heating channel 101 in the heater 10, the heat generated by the mixed combustion of hydrogen and oxygen in the combustion chamber 20 can be used to heat the supercritical carbon dioxide in the second heating channel 102. In this way, there is no need to set up an additional heating device to heat the supercritical carbon dioxide in the second heating channel 102, which simplifies the structure of the supercritical carbon dioxide circulation power generation device 100 and reduces the cost. In addition, the heat generated by the hydrogen energy heating and power generation device 200 is effectively utilized, thereby improving the utilization rate of energy.

[0047] Optionally, the hydrogen energy heating power generation device 200 further includes a first compressor 21, a first turbine 23 and a first electric generator 22, wherein the outlet end of the first compressor 21 is connected to the inlet end of the combustion chamber 20, and the first compressor 21, the first electric generator 22 and the first turbine 23 are coaxially arranged, wherein the first electric generator 22 can be an electric motor or a generator, and its functions are different under different working conditions; when the hydrogen energy heating power generation device 200 is started, the first electric generator 22 is an electric motor, which drives the first compressor 21 and the first turbine 23 to rotate, and the air is compressed and pressurized by the first compressor 21 and enters the combustion chamber 20, and is in a state of being heated and cooled by the air. The mixture is mixed in a certain proportion, and an ignition device 26 is provided in the combustion chamber 20. The ignition device 26 ignites the mixed gas of hydrogen and oxygen to produce a high-temperature and high-pressure mixed gas such as water vapor, nitric oxide, and carbon dioxide. The high-temperature and high-pressure mixed gas enters the first heating channel 101 to heat the supercritical carbon dioxide in the second heating channel 102. In this way, the supercritical carbon dioxide circulation power generation device 100 does not need to set up an additional heating device to heat the supercritical carbon dioxide in the second heating channel 102, which simplifies the structure of the supercritical carbon dioxide circulation power generation device 100, reduces the cost, effectively utilizes the heat generated by the hydrogen energy heating power generation device 200, and improves the energy utilization rate.

[0048] Optionally, the supercritical carbon dioxide cycle power generation device 100 includes a cooler 15, a second compressor 11, a heater 10, a second turbine 13 and a second electric generator 12, wherein the second compressor 11, the second turbine 13 and the second electric generator 12 are coaxially arranged, and when the supercritical carbon dioxide cycle power generation device 100 is started, the second electric generator 12 is an electric motor for driving the second compressor 11 and the second turbine 13 to rotate, wherein the cooler 15 includes a first cooling channel 151 and a second cooling channel 152; in a specific implementation, the outlet end of the second compressor 11 is connected to the inlet end of the second heating channel 102 of the heater 10, and the second heating channel 102 is connected to the outlet end of the second compressor 11. The outlet end of the channel 102 is connected to the inlet end of the second turbine 13, the outlet end of the second turbine 13 is connected to the inlet end of the first cooling channel 151 of the cooler 15, the outlet end of the first cooling channel 151 is connected to the inlet end of the second compressor 11, the second compressor 11 is used to compress the supercritical carbon dioxide to a preset pressure, and after the high-temperature and high-pressure mixed gas generated by the combustion chamber 20 enters the first heating channel 101, the supercritical carbon dioxide in the second heating channel 102 is heated by the heat of the mixed gas. After the temperature of the supercritical carbon dioxide in the second heating channel 102 reaches the operating temperature of the second turbine 13, the second turbine 13 expands and performs work.

[0049] Optionally, the supercritical carbon dioxide cycle power generation device 100 further includes a regenerator 14, the regenerator 14 includes a first heat recovery channel 141, a second heat recovery channel 142 and a third heat recovery channel 143, the outlet end of the second compressor 11 is connected to the inlet end of the first heat recovery channel 141, the outlet end of the first heat recovery channel 141 is connected to the inlet end of the second heating channel 102, the outlet end of the second turbine 13 is connected to the inlet end of the second heat recovery channel 142, the outlet end of the second heat recovery channel 142 is connected to the inlet end of the first cooling channel 151 in the cooler 15, and the outlet end of the first cooling channel 151 is connected to the second The inlet end of the compressor 11 is connected, so that the high-temperature gas generated after the second turbine 13 expands and does work enters the cooler 15 through the second heat recovery channel 142 for cooling and then enters the second compressor 11 again, forming a closed cycle, avoiding the discharge of exhaust gas into the atmosphere, etc., which is clean and environmentally friendly. In addition, since the temperature of the gas discharged after the second turbine 13 expands and does work is relatively high, the high-temperature gas can heat the supercritical carbon dioxide in the first heat recovery channel 141 in the second heat recovery channel 142, effectively utilizing the heat of the gas discharged from the second turbine 13, improving the heat utilization rate, and improving the heating efficiency.

[0050] Optionally, the hydrogen energy heating power generation device 200 further includes a first diverter 24 and a second diverter 25, wherein the outlet end of the first heating channel 101 is connected to the inlet end of the first diverter 24, the first outlet end of the first diverter 24 is connected to the inlet end of the first turbine 23, the second outlet end of the first diverter 24 is connected to the inlet end of the third heat recovery channel 143, the outlet end of the third heat recovery channel 143 is connected to the atmosphere, and the high-temperature gas in the first heating channel 101 is diverted to the third heat recovery channel 143 through the first diverter 24, and the supercritical carbon dioxide in the first heat recovery channel 141 can absorb the waste heat of the high-temperature gas in the third heat recovery channel 143, so that the effective utilization of heat can be improved; further, the first outlet end of the first diverter 24 is connected to the The inlet end of the first turbine 23 is connected, and the outlet end of the first turbine 23 is connected to the inlet end of the second diverter 25. The second outlet end of the second diverter 25 is connected to the atmosphere. When the first turbine 23 is performing expansion work, the temperature and pressure of the gas can be reduced, and then the gas is diverted to the combustion chamber 20 through the first outlet end of the second diverter 25. In this way, the gas re-enters the combustion chamber 20 after releasing heat many times through the heater 10, the first diverter 24, the first turbine 23 and the second diverter 25. The temperature of the gas re-enters the combustion chamber 20 is lower, which reduces the temperature near the ignition device 26, thereby suppressing the premature combustion, deflagration or backfire of H2 and O2 in the combustion chamber 20 due to excessive temperature, thereby improving the safety and reliability of the hydrogen energy heating and power generation device 200.

[0051] On the basis of the above embodiment, when the supercritical carbon dioxide cycle power generation device 100 is started, the second electric generator 12 is in the motor mode, and the motor drives the second compressor 11 and the second turbine 13 to rotate. After the supercritical carbon dioxide is compressed and pressurized by the second compressor 11, it enters the first heat recovery channel 141 to absorb the supercritical carbon dioxide waste heat discharged by the second turbine 13 and the waste heat of the mixed gas discharged to the third heat recovery channel 143 in the hydrogen energy heating power generation device 200, and then enters the second heating channel 102 to absorb the heat of the high-temperature mixed gas discharged from the combustion chamber 20 to the first heating channel 101. After reaching the working temperature of the second turbine 13, the turbine is driven to expand and work. After the waste heat discharged after working is cooled twice through the second heat recovery channel 142 and the first cooling channel 151, it returns to the second compressor 11 to enter the next cycle. When the output work of the second turbine 13 exceeds the power consumption of the second compressor 11 and reaches the preset value, the second electric generator 12 switches to the power generation mode to convert the mechanical energy transmitted by the second turbine 13 into electrical energy to achieve power generation.

[0052] Optional, such as Figure 2 and Figure 3 As shown, the supercritical carbon dioxide cycle power generation device 100 also includes a rotor 16, such as a rotating part such as a rotating shaft, and the impeller of the second compressor 11, the impeller of the second turbine 13 and the magnet of the second electric generator 12 are all sleeved on the rotor 16, and the second electric generator 12 is located between the second compressor 11 and the second turbine 13, and seals 17 are provided between the second electric generator 12 and the second compressor 11 and the second turbine 13 respectively.

[0053] Among them, a cavity is provided in the seal 17. When the seal 17 is installed, it is axially pressed by the housing of the second compressor 11 and the housing of the second electric generator 12, and the housing of the second turbine 13 and the housing of the second electric generator 12, respectively, to achieve axial sealing of the seal 17; the seal 17 has an opening connected to the cavity at one end along the radial direction of the rotor 16 and away from the axis of the rotor 16; the power generation system also includes an inflation system, which is connected to the openings in each seal 17. When the rotor 16 stops rotating, the inflation system inflates each cavity through the openings in each seal 17, so that the end of each seal 17 close to the axis of the rotor 16 fits with a part of the outer surface of the rotor 16, so as to be used to seal the radial gap between the second compressor 11 and the rotor 16, and to seal the radial gap between the second turbine 13 and the rotor 16.

[0054] Optional, such as Figure 4 As shown, the seal 17 is a hollow elastic seal ring, wherein one end of the hollow elastic seal ring close to the axis of the rotor 16 is an O-shaped structure.

[0055] By setting one end of the hollow elastic sealing ring close to the axis of the rotor 16 as an O-shaped structure, the reliability of the sealing member 17 when being fitted to the rotor 16 can be improved.

[0056] In a specific implementation, the seal 17 has a certain elasticity and can rebound after being deformed. The seal 17 is provided at the fitting surface between the second compressor 11 and the second electric generator 12, and the seal 17 is also provided at the fitting surface between the second turbine 13 and the second electric generator 12. In addition, a sealing structure 18 is provided at both ends of the second compressor 11 and the second turbine 13. The sealing structure 18 can be a single sealing structure such as a dry gas seal, a spiral seal, a fingertip seal, a labyrinth seal, a rotary dynamic pressure seal, or a composite sealing structure of the above sealing types. When the automobile is operating normally, a dynamic pressure sealing effect is formed between the sealing structure 18 and the rotor 16 due to relative rotation, such as Figure 2 As shown, a dynamic pressure sealing structure is provided between the second compressor 11 and the second turbine 13 and the rotor 16 to prevent supercritical carbon dioxide from leaking from the radial gap between the second compressor 11 and the second turbine 13 and the rotor 16, and at this time, a preset radial gap is provided between the end of the seal 17 close to the axis of the rotor 16 and the outer surface of the rotor 16 to ensure that the rotor 16 will not collide with the seal 17 when rotating. At this time, the seal 17 is in a free state, and the pressure in the inner cavity is the same as the pressure in the atmosphere; and when the car is parked for a long time, or the supercritical carbon dioxide cycle power generation device 100 is stopped for a long time, that is, the rotor 16 stops rotating, at this time, in order to avoid the supercritical carbon dioxide leakage caused by the disappearance of the dynamic pressure seal between the rotor 16 and the sealing structure 18, as shown in FIG. Figure 3 As shown, the inflation system can be opened at this time, and the inflation system is connected to the cavity through the opening on the seal 17. In this way, part of the high-pressure carbon dioxide is flushed into the cavity of the seal 17 through the inflation system, so that the seal 17 is deformed to an expanded state. At this time, the inflation valve of the seal 17 is closed, one of the seals 17 is attached and pressed against the outer surfaces of the second compressor 11, the second motor generator 12 and the rotor 16, and the other seal 17 is attached and pressed against the outer surfaces of the second turbine 13, the second motor generator 12 and the rotor 16, thereby avoiding leakage of supercritical carbon dioxide and improving the sealing performance of the supercritical carbon dioxide cycle power generation device 100; when the supercritical carbon dioxide cycle power generation device 100 works normally again, the abandonment valve of the seal 17 is opened, and the gas in the seal 17 is discharged into the atmosphere from the opening, and the seal 17 shrinks to a free state, and the seal 17 and the rotor 16 are radially separated and restored to a free gap, thereby improving the sealing reliability between the second compressor 11, the second motor generator 12 and the second turbine 13 and the rotor 16.

[0057] In summary, the supercritical carbon dioxide cycle power generation device 100 serves as the main power generation device of the power generation system, and the hydrogen energy heat power generation device 200 mainly provides heat to the supercritical carbon dioxide cycle power generation device 100. When the work done by the first turbine 23 in the hydrogen energy heat power generation device 200 is greater than the power consumption of the first compressor 21 and reaches a preset value, the hydrogen energy heat power generation device 200 is also used to generate electricity, thereby improving the power generation reliability and power generation efficiency of the power generation system.

[0058] In the power generation system provided by the embodiment of the present invention, by connecting the outlet end of the combustion chamber 20 in the hydrogen energy heating power generation device 200 with the inlet end of the first heating channel 101 in the heater 10, the heat generated by the mixed combustion of hydrogen and oxygen in the combustion chamber 20 can be used to heat the supercritical carbon dioxide in the second heating channel 102. In this way, there is no need to set up an additional heating device to heat the supercritical carbon dioxide in the second heating channel 102, which simplifies the structure of the supercritical carbon dioxide circulation power generation device 100 and reduces the cost. In addition, the heat generated by the hydrogen energy heating power generation device 200 is effectively utilized, thereby improving the utilization rate of energy.

[0059] Embodiment 2

[0060] like Figure 5 As shown, an embodiment of the present invention provides a vehicle, including a vehicle body, a drive motor 300, a transmission mechanism 400 and a power generation system as provided in the above-mentioned embodiment 1, wherein the power generation system provides power to the drive motor 300 so that the drive motor 300 can drive the transmission mechanism 400 to transfer power to the vehicle body and drive the vehicle body to operate.

[0061] Furthermore, the vehicle also includes a battery pack 500. When the power generation system is started, the battery pack 500 is used to power the power generation system to start the power generation system, and / or the battery pack 500 is electrically connected to the drive motor 300 so that the drive motor 300 drives the transmission mechanism 400 to transmit power to the vehicle body.

[0062] Optionally, the vehicle further includes a control device 600, a power regulation device 700 and a temperature control element.

[0063] In specific implementation, when the car starts, it is regulated by the power control device 700, and first switched to the battery pack 500 power supply mode, that is, the battery pack 500 directly provides power to the drive motor 300 through the control device 600 to ensure that the car starts quickly. After the car starts, it is regulated by the power control device 700, and the battery pack 500 supplies power to the first electric generator 22. At this time, the first electric generator 22 is in the electric mode, so that the first electric generator 22 drives the first compressor 21 and the first turbine 23 to rotate, so that the hydrogen energy heating and power generation device 200 starts to operate. When the output power of the first turbine 23 is greater than the power consumption of the first compressor 21 and reaches a preset value, the first electric generator 22 switches to the power generation mode, and the electricity generated by the hydrogen energy heating and power generation device 200 can be stored in the battery pack 50. 0, and can also be used to drive an electric motor; when the temperature control element detects that the carbon dioxide in the supercritical carbon dioxide cycle power generation device 100 is heated to above the supercritical temperature, the power control device 700 is used to control it, and the battery pack 500 supplies power to the second electric generator 12. At this time, the second electric generator 12 is in the electric mode, and the second electric generator 12 drives the second compressor 11 and the second turbine 13 to rotate, so that the supercritical carbon dioxide cycle power generation device 100 starts to run. When the output power of the second turbine 13 is greater than the power consumption of the second compressor 11 and greater than a preset value, the second electric generator 12 switches to the power generation mode, and the electricity generated by the supercritical carbon dioxide cycle power generation device is directly provided to the drive motor 300, and the excess electricity can be stored in the battery pack 500 for other power consumption of the vehicle.

[0064] In summary, in this vehicle, a part of the electricity output by the power generation system directly drives the drive motor 300 through the control device 600, and the motor shaft of the drive motor 300 transmits power to the drive wheels of the vehicle through the transmission mechanism 400 to drive the vehicle to move; the other part of the electricity is directly stored in the battery pack 500, and the electricity stored in the battery pack 500 is mainly used for: first, it can be used as auxiliary power for the transmission mechanism 400. When the vehicle is initially started or suddenly requires high power input, the battery pack 500 can directly allocate the stored electricity to the drive motor 300 through the control device 600; second, it can be supplied to other power-consuming devices on the vehicle; third, the first electric generator 22 and the second electric generator 12 need to consume electricity when they are in electric mode. At this time, the battery pack 500 can reversely supply the stored electricity to the first electric generator 22 and the second electric generator 12. The power control system performs real-time control on the power balance of the power generation system, the drive motor 300, and the battery pack 500 under different operating conditions and different power usage of the automobile, ensuring that the entire energy and power are reasonably distributed while the automobile is running stably to avoid waste, thereby improving the effective utilization rate of energy and electricity.

[0065] Furthermore, the vehicle also includes a carbon dioxide replenishing device 800, a high-pressure hydrogen capacity device 900 and a cooling system 1000, wherein the carbon dioxide replenishing device 800 is used to replenish carbon dioxide to the supercritical carbon dioxide circulation power generation device 100, and the high hydrogen capacity device is used to supply hydrogen to the combustion chamber 20 in the hydrogen energy heating power generation device 200; and the cooling system 1000 is used to be connected to the second cooling channel 152 of the cooler 15 in the supercritical carbon dioxide circulation power generation device 100, and is used to cool the supercritical carbon dioxide entering the first cooling channel 151 in the cooler 15, so as to avoid the supercritical carbon dioxide entering the second compressor 11. The temperature is too high.

[0066] Embodiment 3

[0067] like Figure 6 As shown, an embodiment of the present invention also includes a diversified gas filling station 2000, including a hydrogen filling device 2001 and a carbon dioxide filling device 2002, wherein the hydrogen filling device 2001 is mainly used to fill high-pressure hydrogen into a high hydrogen capacity device, and the carbon dioxide filling device 2002 is mainly used to fill high-pressure carbon dioxide into the carbon dioxide replenishing device 800.

[0068] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power generation system, characterized in that: include: Supercritical carbon dioxide cycle power generation device and hydrogen energy heating power generation device; The supercritical carbon dioxide circulation power generation device includes a heater, and the heater includes a first heating channel and a second heating channel; the hydrogen energy heat power generation device includes a combustion chamber, and the outlet end of the combustion chamber is connected to the inlet end of the first heating channel, so that the heat generated by the mixed combustion of hydrogen and oxygen in the combustion chamber is used to heat the supercritical carbon dioxide in the second heating channel; The hydrogen energy heating and power generation device also includes a first turbine; The hydrogen energy heating and power generation device further comprises a first flow divider and a second flow divider, the outlet end of the first heating channel is in communication with the first flow divider, and the first outlet end of the first flow divider is in communication with the inlet end of the first turbine; The outlet end of the first turbine is communicated with the inlet end of the second flow divider, the first outlet end of the second flow divider is communicated with the inlet end of the combustion chamber, and the second outlet end of the second flow divider is communicated with the atmosphere; The supercritical carbon dioxide cycle power generation device also includes a regenerator; the regenerator includes a first regenerator channel, a second regenerator channel and a third regenerator channel; the second outlet end of the first flow divider is connected to the inlet end of the third regenerator channel, and the outlet end of the third regenerator channel is connected to the atmosphere; The supercritical carbon dioxide cycle power generation device also includes a cooler, a second compressor and a second turbine; The outlet end of the second compressor is communicated with the inlet end of the first heat recovery channel, the outlet end of the first heat recovery channel is communicated with the inlet end of the second heating channel, the outlet end of the second heating channel is communicated with the inlet end of the second turbine, the outlet end of the second turbine is communicated with the inlet end of the second heat recovery channel, the outlet end of the second heat recovery channel is communicated with the inlet end of the cooler, the outlet end of the cooler is communicated with the inlet end of the second compressor, the second compressor is used to compress the supercritical carbon dioxide in the second compressor, the second turbine is used to convert the thermal energy of the supercritical carbon dioxide into mechanical energy, and the cooler is used to cool the supercritical carbon dioxide in the cooler; The combustion chamber is also provided with an ignition device for igniting the mixed gas of hydrogen and oxygen.

2. The power generation system according to claim 1, characterized in that: The hydrogen energy heating and power generation device includes a first compressor and a first electric generator. When the hydrogen energy heating and power generation device is started, the first electric generator is used to drive the first compressor and the first turbine to rotate. The outlet end of the first compressor is connected to the inlet end of the combustion chamber. The first compressor is used to compress air, and the first turbine is used to expand and perform work. When the work performed by the first turbine is greater than the power consumption of the first compressor, the first electric generator is used to generate electricity.

3. The power generation system according to claim 2, characterized in that: The supercritical carbon dioxide cycle power generation device also includes a rotor and a second electric generator, the impeller of the second compressor, the impeller of the second turbine and the magnets of the second electric generator are all mounted on the rotor, and the second electric generator is located between the second compressor and the second turbine, and seals are provided between the second electric generator and the second compressor and the second turbine respectively.

4. The power generation system according to claim 3, characterized in that: A cavity is provided in the sealing member, and one end of the sealing member along the radial direction of the rotor and away from the axis of the rotor has an opening communicating with the cavity; The power generation system also includes an inflation system, which is connected to the openings in each of the seals. When the rotor stops rotating, the inflation system inflates air into each of the cavities through the openings in each of the seals so that one end of each of the seals close to the axis of the rotor fits with a portion of the outer surface of the rotor, so as to seal the radial gap between the second compressor and the rotor along the rotor, and to seal the radial gap between the second turbine and the rotor along the rotor.

5. The power generation system according to claim 4, characterized in that: The sealing element is a hollow elastic sealing ring.

6. The power generation system according to claim 5, characterized in that: One end of the hollow elastic sealing ring close to the axis of the rotor is an O-shaped structure.

7. A vehicle, characterized in that: include: A vehicle body, a drive motor, a transmission mechanism and a power generation system as described in any one of claims 1 to 6, wherein the power generation system supplies power to the drive motor so that the drive motor drives the transmission mechanism to transmit power to the vehicle body.

8. The vehicle according to claim 7, characterized in that The vehicle further includes a battery pack, which is used to supply power to the power generation system to start the power generation system when the power generation system is started; and / or the battery pack is electrically connected to the drive motor so that the drive motor drives the transmission mechanism to transmit power to the vehicle body.

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