Hydrogen-electricity hybrid power system and vehicle

Abstract

The invention provides a hydrogen-electricity hybrid power system and a vehicle, the hydrogen-electricity hybrid power system comprises a hydrogen fuel system, a power battery system, a driving system and a main power supply circuit, and the hydrogen fuel system, the power battery system and the driving system are all connected with the main power supply circuit; the hydrogen fuel system comprises a hydrogen fuel electric pile and a hydrogen storage device for providing hydrogen fuel for the hydrogen fuel electric pile, the hydrogen storage device is provided with a hydrogen filling port, and the power battery system is provided with a direct current charging port and an alternating current charging port. The hydrogen-electricity hybrid power system and the vehicle have various energy supplementing functions and can adapt to various working conditions.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly to a hydrogen-electric hybrid system and a vehicle. Background Art

[0002] As an important energy source for future net-zero emissions, hydrogen energy has been increasingly emphasized in various fields. Hydrogen fuel vehicles have obvious advantages such as high energy density and net-zero emissions. However, due to the existing hydrogen-electric hybrid system having only a hydrogen refueling port, it cannot achieve multiple forms of energy replenishment in various scenarios, and special-formula high-rate charging battery cells or high-power hydrogen stacks are required to ensure the high-power charging and discharging requirements of the power system under feeding conditions, resulting in high costs and low scale benefits, making it difficult to popularize hydrogen fuel vehicles.

[0003] Therefore, it is necessary to provide an improved hydrogen-electric hybrid system and vehicle to solve the above problems. Summary of the Invention

[0004] The present application provides a hydrogen-electric hybrid system and a vehicle with multiple energy replenishment functions.

[0005] The present application discloses a hydrogen-electric hybrid system, including a hydrogen fuel system, a power battery system, a drive system, and a main power supply line. The hydrogen fuel system, the power battery system, and the drive system are all connected to the main power supply line. The hydrogen fuel system includes a hydrogen fuel cell stack and a hydrogen storage device for providing hydrogen fuel to the hydrogen fuel cell stack. The hydrogen storage device is provided with a hydrogen refueling port, and the power battery system is provided with a DC charging port and an AC charging port.

[0006] Further, the power battery system includes a power battery and an on-vehicle charger. The power battery is connected to the main power supply line, and the on-vehicle charger connects the power battery and the AC charging port.

[0007] Further, the power of the hydrogen fuel cell stack is less than 60kW.

[0008] Further, it further includes a control system for controlling the hydrogen fuel system and the power battery system to supply power to the drive system. When there is high-power output, the control system controls the power battery system to supply power to the drive system. When the remaining power or discharge power of the power battery system is lower than a preset value, the control system controls the hydrogen fuel system to supply power to the drive system.

[0009] Further, the control system includes a fuel cell system controller and a vehicle controller. The fuel cell system controller is connected to the hydrogen fuel system, and the vehicle controller is connected to the power battery system and the drive system.

[0010] Further, it further includes a DCF module. The DCF module is connected to the hydrogen fuel cell stack and the main power supply line, and the DCF module is arranged below the hydrogen fuel cell stack.

[0011] Further, the power battery system includes a small power battery and a supercapacitor bank, and the small power battery and the supercapacitor bank are respectively connected in parallel to the main power supply line.

[0012] Further, the capacity of the small power battery is less than or equal to 20 kWh, and the power of the supercapacitor bank is greater than or equal to 100 kW.

[0013] Further, the power battery system includes a power-type battery and an energy-type battery connected in parallel to the main power supply line.

[0014] Further, the power of the power-type battery is greater than or equal to 100 kW, and the total battery capacity of the power-type battery and the energy-type battery is less than or equal to 20 kWh.

[0015] Further, the DC charging port and the AC charging port are arranged on the same side of the power battery system, and the hydrogen refueling port is arranged on the side opposite to the DC charging port and the AC charging port.

[0016] Further, the hydrogen fuel cell stack is located on one side of the power battery system, and the hydrogen storage device is located on the other side of the power battery system.

[0017] Further, the capacity of the power battery is greater than 20 kWh.

[0018] This application also discloses a vehicle, including the hydrogen-electric hybrid system as described above, and the hydrogen fuel cell stack is located behind the front wheel axle of the vehicle.

[0019] The hydrogen-electric hybrid system and the vehicle of this application are provided with a hydrogen refueling port in the hydrogen storage device, a DC charging port and an AC charging port in the power battery system, so that the hydrogen-electric hybrid system simultaneously has the functions of hydrogen refueling of the hydrogen fuel system, fast charging and slow charging of the power battery system, and at the same time improves the compatibility with the energy replenishment equipment to meet the different energy replenishment scenario requirements of users, and improves the stability and reliability of the operation of the hydrogen-electric hybrid system.

[0020] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with this specification, and are used together with the specification to explain the principles of this specification.

[0022] Figure 1 It is a schematic diagram of the hydrogen-electric hybrid power system of the present application.

[0023] Figure 2 It is a structural schematic diagram of the hydrogen-electric hybrid power system of the present application.

[0024] Figure 3 It is a connection schematic diagram of the first embodiment of the hydrogen-electric hybrid power system of the present application.

[0025] Figure 4 It is a connection schematic diagram of the second embodiment of the hydrogen-electric hybrid power system of the present application.

[0026] Figure 5 It is a connection schematic diagram of the third embodiment of the hydrogen-electric hybrid power system of the present application.

[0027] Explanation of the reference numerals in the drawings: 10, hydrogen fuel system; 11, hydrogen fuel cell stack; 12, hydrogen storage device; 121, hydrogen refueling port; 20, power battery system; 201, DC charging port; 202, AC charging port; 203, on-vehicle charger; 21, power battery; 22, small power battery; 23, super capacitor bank; 24, power-type battery; 25, energy-type battery; 30, drive system; 31, front electric drive; 32, rear electric drive; 40, main power supply line; 50, control system; 60, DFC module; 70, front wheel axle. Detailed implementation manners

[0028] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all the implementation manners consistent with this specification. On the contrary, they are only examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0029] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this specification should have the ordinary meanings understood by those of ordinary skill in the art to which this application pertains. The terms "first", "second" and similar words used in this specification and the claims do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not denote a quantity limitation, but rather denote the presence of one. "Plurality" or "several" means two or more. Unless otherwise indicated, words such as "front", "rear", "lower" and / or "upper" are for convenience only and are not limited to one position or a spatial orientation. The words such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0030] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a", "the" and "said" used in this specification and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0031] Next, the embodiments of this application will be described in detail.

[0032] As Figure 1 and Figure 2 shown, this application provides a hydrogen-electric hybrid system, including a hydrogen fuel system 10, a power battery system 20, a drive system 30, a main power supply line 40 and a control system 50. The hydrogen fuel system 10, the power battery system 20 and the drive system 30 are all connected to the main power supply line 40, and the control system 50 controls the hydrogen fuel system 10, the power battery system 20 and the drive system 30.

[0033] The hydrogen fuel system 10 includes a hydrogen fuel cell stack 11 and a hydrogen storage device 12. The hydrogen fuel cell stack 11 is connected in parallel to the main power supply line 40. An electrochemical reaction occurs in the hydrogen fuel cell stack 11 to generate electrical energy, and the electrical energy can be transmitted to other systems through the main power supply line 40. The hydrogen storage device 12 is connected to the hydrogen fuel cell stack 11 and provides hydrogen fuel for the hydrogen fuel cell stack 11. The hydrogen fuel cell stack 11 is located on one side of the power battery system 20, and the hydrogen storage device 12 is located on the other side of the power battery system 20.

[0034] The hydrogen fuel system 10 has excellent energy utilization rate and thermal efficiency, high overall energy utilization rate, operates smoothly without noise, has strong low-temperature usability, and has little impact on air quality and the environment. It is one of the main power sources for the output power of the hydrogen-electric hybrid system.

[0035] The hydrogen storage device 12 is provided with a hydrogen refueling port 121, enabling the hydrogen-electric hybrid system of the present application to have a hydrogen refueling function. By providing the hydrogen refueling port 121, the hydrogen-electric hybrid system can more conveniently and efficiently obtain hydrogen energy from the outside and store it in the hydrogen storage device 12. The filling speed of hydrogen is relatively fast, enabling the hydrogen refueling process to be completed quickly, improving the efficiency and convenience of user use.

[0036] Specifically, in the present application, the hydrogen storage device 12 is a hydrogen tank, which has a high energy density. The number of hydrogen tanks is multiple, with a large storage capacity, which can fully meet the requirements of users for the cruising range. Moreover, by dispersing the hydrogen storage in multiple hydrogen tanks, the overall risk can be reduced, ensuring the safety and usability of the operation of the hydrogen-electric hybrid system. In the present application, multiple hydrogen tanks are arranged side by side, making the overall structure more compact and reducing the complexity of pipeline connection. In some cases, multiple hydrogen tanks can also be dispersed according to the overall layout and space requirements to improve the flexibility of system design.

[0037] The power battery system 20 can store and release electric energy, and it is another main power source for the output power of the hydrogen-electric hybrid system. In the present application, the power battery system 20 is provided with a DC charging port 201 and an AC charging port 202, which can cooperate with external charging devices to provide electric energy for the power battery system 20. The DC charging port 201 charges by directly transmitting current into the battery with a relatively high current, enabling fast charging of the power battery system 20, which is suitable for long-distance travel or urgent charging situations. The AC charging port 202 needs to convert alternating current into direct current and then transmit it into the battery, enabling slow charging of the power battery system 20, which is suitable for daily use or situations with a long parking time.

[0038] Specifically, the DC charging port 201 and the AC charging port 202 are arranged on the same side of the power battery system 20, and the hydrogen refueling port 121 is arranged on the side opposite to the DC charging port 201 and the AC charging port 202. Arranging the hydrogen refueling port 121 and the charging ports on both sides of the power battery system 20 can disperse the energy input, contribute to balancing the weight distribution of the hydrogen-electric hybrid system, and effectively improve the controllability and stability. At the same time, users can more conveniently access the charging equipment or hydrogen refueling equipment, improving the convenience and flexibility of use.

[0039] By setting up the DC charging port 201 and the AC charging port 202, the hydrogen-electric hybrid power system of the present application is equipped with the fast charging and slow charging functions of the power battery system 20, meeting the diverse requirements for charging efficiency and charging equipment under different usage scenarios. At the same time, the compatibility with the energy replenishment equipment is improved, enhancing the overall performance of the hydrogen-electric hybrid power system.

[0040] It can be understood that in addition to being able to be charged by connecting external charging equipment through the DC charging port 201 and the AC charging port 202, the power battery system 20 of the present application can also be charged by receiving power from the hydrogen fuel system 10. With such a setting, it can be ensured that when the hydrogen-electric hybrid power system is in a situation where external charging cannot be carried out for a long time, the power battery system 20 can still operate normally and discharge outward through the charging of the hydrogen fuel system 10.

[0041] As Figure 3 shown, in the first embodiment, the power battery system 20 includes a power battery 21 and an on-vehicle charger 203. The power battery 21 is connected to the main power supply line 40 and can be electrically connected to other systems through the main power supply line 40. The DC charging port 201 is connected to the power battery 21, directly delivering direct current to the power battery 21. The on-vehicle charger 203 connects the power battery 21 and the AC charging port 202, converting the alternating current from the AC charging port 202 into direct current and delivering it to the power battery 21.

[0042] In this embodiment, the volume and power of the hydrogen fuel cell stack 11 are relatively small, facilitating flexible layout in the hydrogen-electric hybrid power system, achieving lightweight design while ensuring a relatively high cruising range. The volume and battery capacity of the power battery 21 are relatively large, which can reduce the requirements for the hydrogen fuel cell stack 11 while meeting the high-power output of the hydrogen-electric hybrid power system. Specifically, the power of the hydrogen fuel cell stack 11 is less than 60 kW, and the battery capacity of the power battery 21 is greater than 20 kWh. The various parameters of the hydrogen fuel cell stack 11 and the power battery 21 can also be flexibly designed according to actual needs.

[0043] The hydrogen fuel cell stack 11 and the power battery 21 cooperate and interact with each other in terms of energy supply and power output. The control system 50 controls the hydrogen fuel system 10 and the power battery system 20 to supply power to the drive system 30 according to the specific power situation of the hydrogen-electric hybrid power system. The control system 50 can control the hydrogen fuel system 10 and the power battery system 20 to supply power to the drive system 30 simultaneously to give full play to their performance advantages; it can also control the hydrogen fuel system 10 and the power battery system 20 to supply power to the drive system 30 separately, flexibly changing to adapt to different working conditions.

[0044] In some cases, when there is high-power output, the control system 50 controls the power battery system 20 to supply power to the drive system 30. When the remaining power or discharge power of the power battery system 20 is lower than a preset value, the control system 50 controls the hydrogen fuel system 10 to supply power to the drive system 30.

[0045] When there is low-power output, the control system 50 controls the hydrogen fuel system 10 to supply power to the drive system 30.

[0046] When in a high-power recovery working condition, the control system 50 controls the power battery 21 to recover the electric energy of the drive system for charging.

[0047] As Figure 4 shown, in the second embodiment, the power battery system 20 includes a small power battery 22, a supercapacitor bank 23, and an on-vehicle charger 203. The small power battery 22 and the supercapacitor bank 23 are respectively connected in parallel to the main power supply line 40. The DC charging port 201 is connected to the small power battery 22 to directly deliver direct current to the small power battery 22. The on-vehicle charger 203 is connected to the small power battery 22 and the AC charging port 202 to convert the alternating current from the AC charging port 202 into direct current and deliver it to the small power battery 22.

[0048] The supercapacitor bank 23 has a strong power storage capacity and has the characteristics of short charging time, long service life, good temperature characteristics, energy conservation, and environmental friendliness. The supercapacitor bank 23 combines the large-current fast charge and discharge characteristics of ordinary capacitors and the energy storage characteristics of batteries, and better solves the problem of the difference in specific energy and specific power between ordinary capacitors and batteries. It is a new type of green energy storage device.

[0049] In this embodiment, the volume and power of the hydrogen fuel cell stack 11 are relatively small, which is convenient for flexible arrangement in the hydrogen-electric hybrid power system, realizing lightweight design while ensuring a relatively high cruising range. Compared with the first embodiment, the volume and battery capacity of the small power battery 22 are relatively small. The small power battery 22 and the supercapacitor bank 23 cooperate with each other to meet the high-power output of the hydrogen-electric hybrid power system, ensure the performance requirements, and at the same time reduce the requirements for the power follow of the hydrogen fuel cell stack 11 and the small power battery 22.

[0050] Specifically, the power of the hydrogen fuel cell stack 11 is less than 60 kW, the capacity of the small power battery 22 is less than or equal to 20 kWh, and the power of the supercapacitor bank 23 is greater than or equal to 100 kW. The parameters of the hydrogen fuel cell stack 11, the small power battery 22, and the supercapacitor bank 23 can also be flexibly designed according to actual needs.

[0051] The hydrogen fuel cell stack 11, the small power battery 22, and the super capacitor bank 23 cooperate and interact with each other in terms of energy supply and power output. The control system 50 controls the hydrogen fuel cell stack 11, the small power battery 22, and the super capacitor bank 23 to supply power to the drive system 30 according to the specific power conditions of the hydrogen-electric hybrid system. The control system 50 can control the hydrogen fuel cell stack 11, the small power battery 22, and the super capacitor bank 23 to supply power to the drive system 30 simultaneously to give full play to the performance advantages of the three; it can also control the hydrogen fuel cell stack 11, the small power battery 22, and the super capacitor bank 23 to supply power to the drive system 30 separately and flexibly transform to meet the requirements of different working conditions.

[0052] In some cases, when there is high-power output, the control system 50 controls the super capacitor bank 23 to supply power to the drive system 30. When the remaining power or discharge power of the super capacitor bank 23 is lower than the preset value, the control system 50 controls the small power battery 22 to supply power to the drive system 30. When the remaining power or discharge power of the small power battery 22 is lower than the preset value, the control system 50 controls the hydrogen fuel cell stack 11 to supply power to the drive system 30.

[0053] When there is low-power output, the control system 50 controls the hydrogen fuel system 10 to supply power to the drive system 30.

[0054] When in the high-power recovery working condition, the control system 50 controls the small power battery 22 to recover the electric energy of the drive system for charging. When the remaining power or discharge power of the small power battery 22 is higher than the preset value, the control system 50 controls the super capacitor bank 23 to recover the electric energy of the drive system for charging.

[0055] As Figure 5 shown, in the third embodiment, the power battery system 20 includes a power-type battery 24, an energy-type battery 25, and an on-vehicle charger 203. The power-type battery 24 and the energy-type battery 25 are connected in parallel to the main power supply line 40 and can be electrically connected to other systems through the main power supply line 40. The DC charging port 201 is connected to the power battery system 20 to directly deliver direct current to the power-type battery 24 and the energy-type battery 25. The on-vehicle charger 203 is connected to the power battery system 20 and the AC charging port 202 to convert the alternating current from the AC charging port 202 into direct current and deliver it to the power-type battery 24 and the energy-type battery 25.

[0056] The power-type battery 24 has a lower internal resistance and a higher conductivity, can quickly release the stored energy, and performs excellently in applications such as acceleration, start, and requiring instantaneous high-energy output. The energy-type battery 25 can provide a higher energy density, can store energy for a long time, and continuously output a lower power.

[0057] In this embodiment, the hydrogen fuel cell stack 11 has a relatively small volume and power, which is convenient for flexible arrangement in the hydrogen-electric hybrid system. While achieving lightweight design, it ensures a relatively high cruising range. The power-type battery 24 and the energy-type battery 25 cooperate with each other to meet the high-power output of the hydrogen-electric hybrid system, ensure long-term energy storage and continuous power output, and at the same time reduce the requirement for the power following of the hydrogen fuel cell stack 11.

[0058] Specifically, the power of the hydrogen fuel cell stack 11 is less than 60 kW, the power of the power-type battery 24 is greater than or equal to 100 kW, and the total battery capacity of the power-type battery 24 and the energy-type battery 25 is less than or equal to 20 kWh. The parameters of the hydrogen fuel cell stack 11, the power-type battery 24, and the energy-type battery 25 can also be flexibly designed according to actual needs.

[0059] The hydrogen fuel cell stack 11, the power-type battery 24, and the energy-type battery 25 cooperate and interact with each other in terms of energy supply and power output. The control system 50 controls the hydrogen fuel cell stack 11, the power-type battery 24, and the energy-type battery 25 to supply power to the drive system 30 according to the specific power situation of the hydrogen-electric hybrid system. The control system 50 can control the hydrogen fuel cell stack 11, the power-type battery 24, and the energy-type battery 25 to supply power to the drive system 30 simultaneously to give full play to the performance advantages of the three; it can also control the hydrogen fuel cell stack 11, the power-type battery 24, and the energy-type battery 25 to supply power to the drive system 30 separately and flexibly change to adapt to different working conditions.

[0060] In some cases, when there is high-power output, the control system 50 controls the power battery system 20 to supply power to the drive system 30. When the remaining power or discharge power of the power battery system 20 is lower than the preset value, the control system 50 controls the hydrogen fuel system 10 to supply power to the drive system 30. When there is low-power output, the control system 50 controls the hydrogen fuel system 10 to supply power to the drive system 30.

[0061] The drive system 30 includes at least one of the front electric drive 31 and the rear electric drive 32. The front electric drive 31 is arranged close to the hydrogen fuel cell stack 11 and is used to drive the front wheels. The rear electric drive 32 is arranged close to the hydrogen storage device 12 and is used to drive the rear wheels.

[0062] In this application, the control system 50 includes a fuel cell system controller and a vehicle controller. The fuel cell system controller is connected to the hydrogen fuel system 10 and is used to control the hydrogen fuel system 10. The vehicle controller is connected to the power battery system 20 and the drive system 30 and is used to control the power battery system 20 and the drive system 30. In some cases, the fuel cell system controller and the vehicle controller can also be integrated to reduce the development cost of components.

[0063] Further, the hydrogen-electric hybrid system of the present application further includes a DCF module 60. The DCF module 60 is connected to the hydrogen fuel cell stack 11 and the main power supply line 40. The hydrogen fuel cell stack 11 is boosted through the DCF module 60, and the DCF module 60 transmits the boosted electrical energy to the main power supply line 40. Specifically, the DCF module 60 is disposed below the hydrogen fuel cell stack 11.

[0064] The present application also provides a vehicle including the hydrogen-electric hybrid system as described above. The hydrogen fuel cell stack 11 and the power battery system 20 are both disposed close to the front engine compartment. The hydrogen fuel cell stack 11 is located on the front side of the power battery system 20. The hydrogen storage device 12 is disposed close to the rear engine compartment. The hydrogen fuel cell stack 11 is located behind the front wheel axle 70 of the vehicle.

[0065] By simultaneously providing the hydrogen fuel system 10 and the power battery system 20 in the hydrogen-electric hybrid system of the present application, the hydrogen-electric hybrid system has the advantages of both power systems, can achieve high-power output, and also has a high cruising range. It can be driven purely electrically for short trips and can be hydrogen-added for range extension for long-distance trips.

[0066] By providing a hydrogen refueling port 121 on the hydrogen storage device 12, a DC charging port 201 and an AC charging port 202 on the power battery system 20, the hydrogen-electric hybrid system has the functions of hydrogen refueling of the hydrogen fuel system 10, fast charging and slow charging of the power battery system 20, and at the same time improves the compatibility with the energy replenishment equipment to meet the different energy replenishment scenario requirements of users, and improves the stability and reliability of the operation of the hydrogen-electric hybrid system. At the same time, through different combination forms of the power battery system 20, the requirements for the hydrogen fuel cell stack 11 can be reduced to meet the power following of the vehicle under different working conditions.

[0067] The above description is only a preferred embodiment of the present application and does not impose any form of limitation on the present application. Although the present application has been disclosed above in a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to obtain an equivalent embodiment with equivalent changes without departing from the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A hydrogen-electric hybrid system, characterized in that, It includes a hydrogen fuel system, a power battery system, a drive system, and a main power supply line. The hydrogen fuel system, the power battery system, and the drive system are all connected to the main power supply line. The hydrogen fuel system includes a hydrogen fuel cell stack and a hydrogen storage device that provides hydrogen fuel for the hydrogen fuel cell stack. The hydrogen storage device is provided with a hydrogen refueling port, and the power battery system is provided with a DC charging port and an AC charging port.

2. The hydrogen-electric hybrid system according to claim 1, characterized in that, The power battery system includes a power battery and an on-vehicle charger. The power battery is connected to the main power supply line, and the on-vehicle charger connects the power battery and the AC charging port.

3. The hydrogen-electric hybrid system according to claim 1, characterized in that, The power of the hydrogen fuel cell stack is less than 60 kW.

4. The hydrogen-electric hybrid system according to claim 1, characterized in that, It further includes a control system that is used to control the hydrogen fuel system and the power battery system to supply power to the drive system. When there is a high-power output, the control system controls the power battery system to supply power to the drive system. When the remaining power or discharge power of the power battery system is lower than a preset value, the control system controls the hydrogen fuel system to supply power to the drive system.

5. The hydrogen-electric hybrid system according to claim 4, characterized in that, The control system includes a fuel cell system controller and a vehicle controller. The fuel cell system controller is connected to the hydrogen fuel system, and the vehicle controller is connected to the power battery system and the drive system.

6. The hydrogen-electric hybrid system according to claim 1, characterized in that, It further includes a DCF module. The DCF module is connected to the hydrogen fuel cell stack and the main power supply line, and the DCF module is arranged below the hydrogen fuel cell stack.

7. The hydrogen-electric hybrid system according to claim 1, characterized in that, The power battery system includes a small power battery and a supercapacitor bank. The small power battery and the supercapacitor bank are respectively connected in parallel to the main power supply line.

8. The hydrogen-electric hybrid system according to claim 7, characterized in that, The capacity of the small power battery is less than or equal to 20 kWh, and the power of the supercapacitor bank is greater than or equal to 100 kW.

9. The hydrogen-electric hybrid system according to claim 1, characterized in that, The power battery system includes a power-type battery and an energy-type battery that are connected in parallel to the main power supply line.

10. The hydrogen-electric hybrid system according to claim 9, characterized in that, The power of the power-type battery is greater than or equal to 100 kW, and the total battery capacity of the power-type battery and the energy-type battery is less than or equal to 20 kWh.

11. The hydrogen-electric hybrid system according to claim 1, characterized in that, The DC charging port and the AC charging port are arranged on the same side of the power battery system, and the hydrogen refueling port is arranged on the side opposite to the DC charging port and the AC charging port.

12. The hydrogen-electric hybrid system according to claim 1, characterized in that, The hydrogen fuel cell stack is located on one side of the power battery system, and the hydrogen storage device is located on the other side of the power battery system.

13. The hydrogen-electric hybrid system according to claim 1, characterized in that, The capacity of the power battery is greater than 20 kWh.

14. A vehicle, characterized in that, It includes a hydrogen-electric hybrid system according to any one of claims 1-13, and the hydrogen fuel cell stack is located behind the front wheel axle of the vehicle.

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