Hydrogen-electricity hybrid vehicle

Abstract

The invention provides a hydrogen-electricity hybrid vehicle. The hydrogen-electricity hybrid vehicle comprises a hydrogen fuel cell system, a hydrogen storage system, a power battery system, a driving system and a DCF assembly. The hydrogen fuel cell system comprises a galvanic pile assembly, and the galvanic pile assembly is electrically connected with the power cell system through a DCF assembly; the power battery system and the hydrogen storage system are both arranged below an automobile floor, the electric pile assembly and the DCF assembly are arranged on the front side of the power battery system, and the hydrogen storage system is arranged on the rear side of the power battery system. According to the hydrogen-electricity hybrid automobile, the original mode that only a power battery system is used for providing power for a driving system can be upgraded and transformed into hydrogen-electricity hybrid, and the competitiveness of the automobile is improved by utilizing the advantages of high efficiency, zero emission, low noise and the like of a hydrogen fuel cell; and meanwhile, the power battery can replace a hydrogen fuel battery in the starting stage, so that the hydrogen-electricity hybrid vehicle can be quickly started.

Description

Technical Field

[0001] This application relates to the field of new energy vehicles, and particularly to a hydrogen-electric hybrid vehicle. Background Art

[0002] With the continuous progress of new energy vehicle technology and the continuous development of the industry, new energy vehicles are gradually replacing fuel vehicles with their advantages of environmental protection and energy conservation. Among them, hydrogen fuel cells, with their advantages of high efficiency, zero emissions, and low noise, have become an important tool for the transformation of China's energy structure, energy conservation and emission reduction, and the upgrading of the automotive industry, and will become an important solution for the sustainable development of China's cities and economy. At the same time, the state and local governments have gradually introduced a series of policies to strongly support the development of hydrogen fuel cell vehicles, and major domestic vehicle manufacturers are also accelerating the strategic layout of hydrogen fuel cell vehicles.

[0003] However, if a vehicle is only equipped with a hydrogen fuel cell, since the hydrogen fuel cell needs to react hydrogen and oxygen in the fuel cell stack to generate electric energy, it has the disadvantage of slow start.

[0004] Therefore, it is necessary to provide a new type of hydrogen-electric hybrid vehicle to solve the above problems. Summary of the Invention

[0005] The purpose of this application is to provide a hydrogen-electric hybrid vehicle equipped with both a power battery and a hydrogen fuel cell.

[0006] This application provides a hydrogen-electric hybrid vehicle, including: a hydrogen fuel cell system, a hydrogen storage system, a power battery system, a drive system, and a DCF assembly; the hydrogen fuel cell system includes a fuel cell stack assembly, and the fuel cell stack assembly is electrically connected to the power battery system through the DCF assembly; both the power battery system and the hydrogen storage system are arranged below the vehicle floor, the fuel cell stack assembly and the DCF assembly are arranged on the front side of the power battery system, and the hydrogen storage system is arranged on the rear side of the power battery system.

[0007] Further, the hydrogen fuel cell system further includes an air system, a hydrogen system, an exhaust system, and a cooling system, and the air system and the hydrogen system are respectively connected to the fuel cell stack assembly and the exhaust system.

[0008] Further, the air system includes an intake pipe, an air filter, an air compressor, an intercooler, and a throttle assembly; the throttle assembly is respectively in communication with the fuel cell stack assembly, the intercooler, and the exhaust system.

[0009] Further, the throttle assembly includes an intake valve, an exhaust valve, and a bypass valve; the intake pipe, the air filter, the air compressor, the intercooler, and the intake valve are connected in sequence; the intake valve is also connected to the fuel cell stack assembly; one end of the exhaust valve is connected to the fuel cell stack assembly, and the other end of the exhaust valve is connected to the exhaust system; one end of the bypass valve is connected to the intercooler, and the other end of the bypass valve is connected to the exhaust system.

[0010] Further, the intake pipe, the air filter, and the air compressor are located on one side of the fuel cell stack assembly; the intercooler and the throttle assembly are located on the other side of the fuel cell stack assembly.

[0011] Further, the air compressor is electrically connected to the DCF assembly; the intake pipe, the air compressor, the intercooler, and the throttle assembly are connected by intake hoses.

[0012] Further, the air system further includes a humidifier, and the humidifier is located between the air compressor and the intercooler and is connected to the air compressor and the intercooler.

[0013] Further, the hydrogen system includes a preheater and a hydrogen processor; one end of the preheater is connected to the hydrogen storage system, and the other end of the preheater is connected to the hydrogen processor; the hydrogen processor is respectively connected to the fuel cell stack assembly and the exhaust system.

[0014] Further, the hydrogen processor and the preheater are located on the side of the fuel cell stack assembly close to the power battery system.

[0015] Further, the hydrogen processor is an integrated ejector water separator, and the integrated ejector water separator includes a water separator and an ejector connected to the inside of the water separator; the ejector is provided with a primary gas inlet connected to the hydrogen storage system and a mixed gas outlet connected to the fuel cell stack assembly; the water separator is provided with a secondary gas inlet connected to the fuel cell stack assembly and a drain port connected to the exhaust system.

[0016] Further, the hydrogen processor is an integrated circulation pump water separator, and the integrated circulation pump water separator includes a water separator and a circulation pump installed on the water separator; the water separator is provided with a secondary gas inlet connected to the fuel cell stack assembly, an internal outlet connected to the circulation pump, and a drain port connected to the exhaust system; the circulation pump is provided with an internal inlet connected to the water separator and a gas outlet connected to the fuel cell stack assembly.

[0017] Further, the exhaust system includes a water collector and a muffler; the water collector is connected to the air system, the hydrogen system, and the muffler at the same time; the water collector and the muffler are arranged under the vehicle floor.

[0018] Further, the cooling system includes a heat dissipation assembly, a water pump, and a PTC heater; the fuel cell stack assembly includes a water inlet and a water outlet, the water pump is communicated with the water inlet, and the heat dissipation assembly is communicated with the water outlet.

[0019] Further, the heat dissipation assembly, the water pump, and the PTC heater are located in the front engine compartment, the heat dissipation assembly and the air intake pipe are arranged on the front end frame, and the heat dissipation assembly is located below the air intake pipe; the heat dissipation assembly, the water pump, and the fuel cell stack assembly are connected through silicone hoses.

[0020] Further, a control system is further included; the control system is arranged in the front engine compartment and is electrically connected to the drive system, the power battery system, the DCF assembly, the hydrogen fuel cell system, and the hydrogen storage system.

[0021] Further, the control system includes a VCU controller and an FCU controller; the FCU controller and the VCU controller interact through a PCAN.

[0022] Further, the drive system includes a front drive motor; the front drive motor is arranged on the front subframe; the fuel cell stack assembly and the DCF assembly are arranged below the vehicle floor, the fuel cell stack assembly and the DCF assembly are arranged on the vehicle longitudinal beam, and in the vehicle body width direction, the DCF assembly is located on one side of the fuel cell stack assembly.

[0023] Further, the fuel cell stack assembly includes a plurality of mountings; the plurality of mountings are arranged on both sides of the fuel cell stack assembly in the vehicle body width direction; the fuel cell stack assembly is mounted on the vehicle longitudinal beam through the plurality of mountings.

[0024] Further, the drive system further includes a rear drive motor; the projections of the front drive motor, the rear drive motor, the fuel cell stack assembly, the DCF assembly, and the hydrogen storage system on the vehicle floor do not overlap.

[0025] Further, the drive system only includes a rear drive motor; the hydrogen fuel cell system and the DCF assembly are located in the front engine compartment and are arranged on the front subframe, the DCF assembly is located below the hydrogen fuel cell system; the rear drive motor is arranged on the rear subframe.

[0026] Further, the hydrogen storage system is located between the power battery system and the rear subframe; the hydrogen storage system includes a hydrogen tank and a hydrogen filling port.

[0027] The hydrogen-electric hybrid vehicle provided by this application can upgrade the original power supply for the drive system from only the power battery system to a hydrogen-electric hybrid. By leveraging the advantages of high efficiency, zero emissions, and low noise of hydrogen fuel cells, the competitiveness of the vehicle can be enhanced. At the same time, the power battery can also replace the hydrogen fuel cell during the starting stage, enabling the hydrogen-electric hybrid vehicle to start quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with this specification and used together with the specification to explain the principles of this specification.

[0029] Figure 1 It is a configuration diagram of the hydrogen-electric hybrid vehicle of this application.

[0030] Figure 2 It is a connection schematic diagram of the integrated ejector water separator provided by this application.

[0031] Figure 3 It is a connection schematic diagram of the integrated circulating pump water separator provided by this application.

[0032] Figure 4 It is Figure 1 the layout diagram of the main components in

[0033] Figure 5 It is Figure 2 the plan layout diagram of the components in

[0034] Figure 6 It is a configuration diagram of another embodiment of the hydrogen-electric hybrid vehicle of this application.

[0035] Figure 7 It is a configuration diagram of yet another embodiment of the hydrogen-electric hybrid vehicle of this application.

[0036] Figure 8 It is Figure 7 the layout diagram of the main components in

[0037] Figure 9 It is Figure 7 the plan layout diagram of the components in

[0038] Description of Reference Numerals: 10. Hydrogen fuel cell system; 11. Stack assembly; 12. Air system; 121. Air intake pipe; 122. Air filter; 123. Air compressor; 124. Humidifier; 125. Intercooler; 126. Intake valve; 127. Exhaust valve; 128. Bypass valve; 13. Hydrogen system; 131. Preheater; 132. Hydrogen processor; 14. Exhaust system; 141. Water collector; 142. Muffler; 15. Cooling system; 151. Heat dissipation assembly; 152. Water pump; 153. PTC heater; 20. Hydrogen storage system; 21. Hydrogen tank; 22. Hydrogen filling port; 30. Power battery system; 40. Drive system; 41. Front drive motor; 42. Rear drive motor; 50. DCF assembly; 60. Control system; 61. VCU controller; 62. FCU controller; 63. PCAN; 71. Water separator; 711. Secondary gas inlet; 712. Drain port; 713. Internal outlet; 72. Ejector; 721. Primary gas inlet; 722. Mixed gas outlet; 73. Circulation pump; 731. Internal inlet; 732. Gas outlet. Detailed Description of the Invention

[0039] Hereinafter, exemplary embodiments will be described in detail, and examples thereof 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 embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this specification. On the contrary, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0040] 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 meaning as understood by those of ordinary skill in the art to which this application belongs. The terms "first", "second" and similar terms used in this specification and the claims do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a" or "an" do not denote a quantity limitation, but mean that there is one. "Multiple" or "several" means two or more. Unless otherwise specified, the terms such as "front", "rear", "lower" and / or "upper" are for convenience of description only and are not limited to one position or a spatial orientation. The terms "comprising" or "including" and similar terms 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 terms "connected" or "coupled" and similar terms are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0041] 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.

[0042] Next, the embodiments of this specification will be described in detail.

[0043] Please refer Figure 1 As shown, this application provides a hydrogen-electric hybrid vehicle, including: a hydrogen fuel cell system 10, a hydrogen storage system 20, a power battery system 30, a drive system 40, a DCF assembly 50, and a control system 60.

[0044] The hydrogen fuel cell system 10 is connected to the hydrogen storage system 20, and the hydrogen storage system 20 provides hydrogen for the hydrogen fuel cell system 10 as fuel to generate electricity. The DCF assembly 50 is a fuel cell DC power supply, and the DCF assembly 50 is electrically connected to the hydrogen fuel cell system 10 and the power battery system 30, thereby boosting the voltage of the hydrogen fuel cell system 10 and the power battery system 30 to reach the voltage required by the motor of the drive system 40.

[0045] The drive system 40 includes a front drive motor 41 and a rear drive motor 42, and the hydrogen-electric hybrid vehicle is in a four-wheel drive form.

[0046] The control system 60 is electrically connected to the hydrogen fuel cell system 10, the hydrogen storage system 20, the power battery system 30, and the DCF assembly 50 to control the operation of the hydrogen-electric hybrid vehicle. The drive system 40 is electrically connected to the hydrogen fuel cell system 10 and the power battery system 30, and the hydrogen fuel cell system 10 and the power battery system 30 provide power for the drive system 40.

[0047] The hydrogen fuel cell system 10 includes a stack assembly 11 and an air system 12, a hydrogen system 13, an exhaust system 14, and a cooling system 15 connected to the stack assembly 11. The stack assembly 11 is electrically connected to the power battery system 30 through the DCF assembly 50.

[0048] The air system 12 includes an intake pipe 121, an air filter 122, an air compressor 123, an intercooler 125, and a throttle assembly connected in sequence. The throttle assembly is respectively connected to the stack assembly 11, the intercooler 125, and the exhaust system 14.

[0049] The intake pipe 121 introduces external air to serve as fuel for the hydrogen fuel cell system 10. The air filter 122 filters the air introduced by the intake pipe 121 to increase the oxygen concentration therein, thereby improving the efficiency of the battery. The air compressor 123 is used to compress the filtered air. The intercooler 125 cools the compressed air and then passes it through the throttle assembly and into the fuel cell stack assembly 11 for reaction to generate electrical energy.

[0050] The throttle assembly includes an intake valve 126, an exhaust valve 127, and a bypass valve 128. The fuel cell stack assembly 11 includes an air inlet and an air outlet. One end of the intake valve 126 is connected to the air inlet, and the other end is connected to the intercooler 125, and is used to transmit the air cooled by the intercooler 125 to the air inlet and then into the fuel cell stack assembly 11. The exhaust valve 127 is connected to the air outlet, thereby receiving the reacted air and discharging it.

[0051] The bypass valve 128 is connected to the intake valve 126, and is used to discharge a part of the air passing through the intake valve 126 when the vehicle is in an idle state or the like, thereby reducing the pressure of the air entering the fuel cell stack assembly 11, and can improve the utilization rate of the fuel cell stack assembly 11 and prevent energy waste.

[0052] The exhaust system 14 includes a water collector 141 and a muffler 142. One end of the water collector 141 is connected to the exhaust valve 127 and the bypass valve 128, and the other end is connected to the muffler 142. The muffler 142 is connected to the external environment and silences the air passing through the water collector 141 before discharging it to the external environment.

[0053] The air circuit of the hydrogen fuel cell system 10 is as follows: Air enters the vehicle interior through the intake pipe 121, passes through the air filter 122, the air compressor 123, and the intercooler 125, and then enters the air inlet of the fuel cell stack assembly 11 through the intake valve 126 for an electrochemical reaction. Among them, when the vehicle is in an idle state or the like, part of the air passing through the intake valve 126 will enter the bypass valve 128 and be discharged to the outside of the vehicle through the water collector 141 and the muffler 142.

[0054] The air passes through the air outlet, the water collector 141, and the muffler 142 and is discharged to the outside of the vehicle after the reaction. Since the hydrogen fuel cell system 10 generates electrical energy by reacting hydrogen with oxygen, a large amount of water vapor is carried in the reacted air. The water collector 141 can collect the water vapor in the air and discharge the remaining gas to the outside of the vehicle through the muffler 142.

[0055] The hydrogen system 13 includes a preheater 131 and a hydrogen processor 132. One end of the preheater 131 is connected to the hydrogen storage system 20, and the other end is connected to the hydrogen processor 132. The hydrogen processor 132 is respectively connected to the fuel cell stack assembly 11 and the exhaust system 14. The fuel cell stack assembly 11 also includes a hydrogen inlet and a hydrogen outlet, and both the hydrogen inlet and the hydrogen outlet are connected to the hydrogen processor 132.

[0056] Please refer Figure 2 As shown, according to an embodiment of the present application, the hydrogen gas processor 132 may be an integrated ejector water separator. The integrated ejector water separator includes a water separator 71 and an ejector 72 that is internally connected to the water separator 71. The ejector 72 is provided with a primary gas inlet 721 that communicates with the preheater 131 of the hydrogen storage system 20 and a mixed gas outlet 722 that communicates with the hydrogen inlet of the fuel cell stack assembly 11. The water separator 71 is provided with a secondary gas inlet 711 that communicates with the hydrogen outlet of the fuel cell stack assembly 11, and the water separator 71 is also provided with a drain port 712 that communicates with the water collector 141.

[0057] The water separator 71 can separate the water vapor in the secondary gas discharged from the hydrogen outlet, and then discharge the separated water vapor to the water collector 141 for storage through the drain port 712. The ejector 72 can not only transfer the primary hydrogen gas preheated by the preheater 131 to the fuel cell stack assembly 11, but also transfer the secondary gas after the water vapor is separated by the water separator 71 back to the fuel cell stack assembly 11 for circulation to improve the utilization rate of hydrogen gas.

[0058] According to another embodiment, the hydrogen gas processor 132 may be an integrated circulation pump water separator. Please refer Figure 3 As shown, the integrated circulation pump water separator includes a water separator 71 and a circulation pump 73 installed on the water separator 71. The water separator 71 is provided with a secondary gas inlet 711 that communicates with the fuel cell stack assembly 11 and an internal outlet 713 that communicates with the circulation pump 73. The circulation pump 73 is provided with an internal inlet 731 that communicates with the water separator 71 and a gas outlet 732 that communicates with the fuel cell stack assembly 11.

[0059] The preheater 131 communicates with the hydrogen inlet, and the hydrogen gas provided by the hydrogen storage system 20 directly enters the fuel cell stack assembly 11 without passing through the integrated circulation pump water separator. The water separator 71 is respectively connected to the hydrogen outlet and the water collector 141.

[0060] The hydrogen gas circuit of the hydrogen fuel cell system 10 is as follows: Hydrogen gas from the hydrogen storage system 20 passes through the preheater 131 and is then transmitted to the fuel cell stack assembly 11 through the hydrogen inlet for reaction. The reacted hydrogen gas then returns from the hydrogen outlet to the hydrogen gas processor 132, and after removing the water vapor carried therein, it enters the fuel cell stack assembly 11 again for recycling of hydrogen gas. Among them, the water vapor is discharged to the water collector 141 through the drain port 712 of the water separator 71 and stored in the water collector 141 in the form of liquid water.

[0061] In other embodiments, the hydrogen gas processor 132 may also adopt a non-integrated structure, that is, the ejector 72, the circulation pump 73 and the water separator 71 are separately provided.

[0062] The cooling system 15 includes a heat dissipation assembly 151, a water pump 152, a PTC heater 153, and a three-way valve. The heat dissipation assembly 151, the water pump 152, and the PTC heater 153 are connected to the stack assembly 11 through silica gel pipelines. The stack assembly 11 includes a water inlet and a water outlet. The water pump 152 is connected to the water inlet, and the heat dissipation assembly 151 and the PTC heater 153 are connected to the water outlet. The three-way valve includes a cooling water flow channel and a heating water flow channel, and the three-way valve is respectively connected to the heat dissipation assembly 151, the water pump 152, and the PTC heater 153.

[0063] When heat dissipation is required at the start of the reaction of the stack assembly 11, the heating water flow channel in the three-way valve is closed, and the cooling water flow channel is opened. The cooling water in the heat dissipation assembly 151 is pressurized by the water pump 152 and then transported to the stack assembly 11 through the cooling water flow channel in the three-way valve through the water inlet to cool the stack assembly 11. Then, part of it flows back to the heat dissipation assembly 151 through the water outlet, and part flows through the PTC heater 153 to the heating water flow channel in the three-way valve.

[0064] When the stack assembly 11 needs to be heated to reach the temperature required for the reaction, the heating water flow channel in the three-way valve is opened, and the cooling water flow channel is closed. The PTC heater 153 heats the water in the heating water flow channel and then transports it to the stack assembly 11 through the water inlet to raise the temperature of the stack assembly 11.

[0065] The heat dissipation assembly 151 includes a radiator (not shown in the figure), and the water pump 152 is installed on the radiator.

[0066] The hydrogen storage system 20 includes a plurality of hydrogen tanks 21 and a hydrogen filling port 22. The hydrogen filling port 22 is connected to the plurality of hydrogen tanks 21, and hydrogen can be replenished to the plurality of hydrogen tanks 21 through the hydrogen filling port 22. The plurality of hydrogen tanks 21 are evenly distributed under the vehicle floor. The hydrogen tanks 21 can be arranged side by side along the vehicle length direction or along the vehicle width direction. This application does not limit this.

[0067] The control system 60 is electrically connected to the power battery system 30, the drive system 40, the DCF assembly 50, the hydrogen fuel cell system 10, and the hydrogen storage system 20. The control system 60 includes a VCU controller 61 and an FCU controller 62. The FCU controller 62 and the VCU controller 61 interact through a PCAN 63.

[0068] The VCU controller 61 is a vehicle controller, and the FCU controller 62 is the main controller of the hydrogen fuel cell system 10. The FCU controller 62 is communicatively connected to the water pump 152, the PTC heater 153, the stack assembly 11, the intake valve 126, the exhaust valve 127, the bypass valve 128, the hydrogen processor 132, the preheater 131, the hydrogen storage system 20, and the DCF assembly 50.

[0069] The air system 12, hydrogen system 13, exhaust system 14 and cooling system 15 are arranged around the fuel cell stack assembly 11 to form a decentralized layout.

[0070] Please also refer Figure 4 and Figure 5 As shown, both the power battery system 30 and the hydrogen storage system 20 are arranged under the vehicle floor. The fuel cell stack assembly 11 and the DCF assembly 50 are arranged on the front side of the power battery system 30, and the hydrogen storage system 20 is arranged on the rear side of the power battery system 30. The projections of the fuel cell stack assembly 11, the hydrogen storage system 20, the power battery system 30 and the DCF assembly 50 on the vehicle floor do not overlap.

[0071] Specifically, the front drive motor 41 is mounted on the front subframe of the vehicle through a mounting bracket. Since the front drive motor 41 is mounted on the front subframe, at this time, the fuel cell stack assembly 11, the hydrogen storage system 20, the power battery system 30, the DCF assembly 50 and the control system 60 are all arranged under the vehicle floor. The fuel cell stack assembly 11 and the DCF assembly 50 are located on the side close to the front wheels, the hydrogen storage system 20 is located on the side close to the rear wheels, and the power battery system 30 is located between the hydrogen fuel cell system 10 and the hydrogen storage system 20. The fuel cell stack assembly 11 and the DCF assembly 50 are arranged on the vehicle body longitudinal beam.

[0072] The fuel cell stack assembly 11 is bolted to the vehicle body longitudinal beam through a mounting bracket, and the mounting bracket is mounted on both sides of the fuel cell stack assembly 11 along the vehicle length direction, and the number of mounting brackets on each side is greater than or equal to 2.

[0073] In the vehicle width direction, the DCF assembly 50 is located on one side of the fuel cell stack assembly 11. The intake pipe 121, the air filter 122 and the air compressor 123 are located on the side of the fuel cell stack assembly 11 away from the power battery system 30, and the intercooler 125 and the throttle valve assembly are located on the opposite side, that is, the side close to the power battery system 30. The intake pipe 121, the air filter 122 and the air compressor 123 are arranged in the front engine compartment, and the intake pipe 121 is mounted on the front end frame. The intercooler 125 is arranged on the side of the air inlet and does not overlap with the air inlet in the vehicle length direction.

[0074] The preheater 131 and the hydrogen processor 132 are on the same side as the throttle valve assembly, that is, the side close to the power battery system 30. The radiator assembly 151, the water pump 152, the PTC heater 153 and the three-way valve are all arranged in the front engine compartment. The radiator assembly 151 is mounted on the front end frame and is located below the intake pipe 121. The water collector 141 and the muffler 142 are both arranged under the vehicle floor.

[0075] The intake pipe 121, the air filter 122, and the air compressor 123 are located on the side of the fuel cell stack assembly 11 away from the power battery system 30, and the throttle valve assembly is located on the opposite side. The intake pipe 121 is arranged on the front end frame in the front engine compartment. The intercooler 125 is arranged on the side of the air inlet and does not overlap with the air inlet in the longitudinal direction of the vehicle.

[0076] As Figure 6 shown, in another embodiment, the air system 12 further includes a humidifier 124. The humidifier 124 is arranged between the air compressor 123 and the intercooler 125 and communicates with the air compressor 123 and the intercooler 125 to increase the humidity of the gas compressed by the air compressor 123 and prevent the fuel cell stack assembly 11 from being affected by too low humidity and affecting the normal operation of the fuel cell stack assembly 11.

[0077] The hydrogen-electric hybrid vehicle can be front-wheel drive. In the embodiment with the front wheels as the drive, at this time, the drive system 40 only includes the front drive motor 41, and the other structures such as the air system 12, the hydrogen system 13, and the exhaust system 14 are arranged in the same way as in the four-wheel drive embodiment, which will not be elaborated in this application.

[0078] According to another embodiment of the present application, please refer to Figures 7 to 9 shown, the hydrogen-electric hybrid vehicle is rear-wheel drive, and the drive system 40 only includes the rear drive motor 42. The rear drive motor 42 is installed on the rear subframe of the vehicle through the suspension mounting parts. The hydrogen storage system 20 and the power battery system 30 are arranged under the floor of the vehicle, and the hydrogen storage system 20 is located on the side close to the trunk of the vehicle. The power battery system 30 is located on the side close to the front engine compartment of the vehicle. The hydrogen fuel cell system 10, the DCF assembly 50, and the control system 60 are all arranged in the front engine compartment. The fuel cell stack assembly 11, the hydrogen processor 132, and the preheater 131 are also arranged in the front engine compartment.

[0079] Specifically, the fuel cell stack assembly 11 is installed on the front subframe through the suspension mounting parts. The suspension mounting parts are arranged on both sides of the fuel cell stack assembly 11 in the longitudinal direction of the vehicle, and the number of suspension mounting parts on each side of the fuel cell stack assembly 11 is greater than or equal to two.

[0080] The DCF assembly 50 includes a number of endpoints located on the bottom surface of the DCF assembly 50. The DCF assembly 50 is installed on the front subframe through the number of endpoints, and the DCF assembly 50 is located below the fuel cell stack assembly 11. The air system 12, the hydrogen system 13, the cooling system 15, and the control system 60 are arranged in the front engine compartment and are dispersedly arranged around the fuel cell stack assembly 11. The exhaust system 14 is arranged under the vehicle floor.

[0081] The hydrogen-electric hybrid vehicle provided by this application can upgrade the power supply for the drive system from only using the power battery system to a hydrogen-electric hybrid, taking advantage of the high efficiency, zero emissions, and low noise of hydrogen fuel cells to improve the competitiveness of the vehicle. At the same time, the power battery can also replace the hydrogen fuel cell at the starting stage, enabling the hydrogen-electric hybrid vehicle to start quickly.

[0082] After considering the specification and practicing the invention described herein, those skilled in the art will readily conceive of other embodiments of this specification. This specification is intended to cover any variations, uses, or adaptations of this specification, which follow the general principles of this specification and include the common general knowledge or conventional technical means in the technical field not claimed in this specification. The specification and examples are only to be regarded as exemplary, and the true scope and spirit of this specification are pointed out by the following claims.

[0083] It should be understood that this specification is not limited to the exact structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of this specification is only limited by the appended claims.

[0084] The above are only the preferred embodiments of this specification and are not intended to limit this specification. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this specification shall be included within the scope of protection of this specification.

Claims

1. A hydrogen-electric hybrid vehicle, characterized in that, Comprising: A hydrogen fuel cell system, a hydrogen storage system, a power battery system, a drive system and a DCF assembly; the hydrogen fuel cell system includes a stack assembly, and the stack assembly is electrically connected to the power battery system through the DCF assembly; both the power battery system and the hydrogen storage system are arranged under the vehicle floor, the stack assembly and the DCF assembly are arranged on the front side of the power battery system, and the hydrogen storage system is arranged on the rear side of the power battery system.

2. The hydrogen-electric hybrid vehicle according to claim 1, characterized in that, The hydrogen fuel cell system further includes an air system, a hydrogen system, an exhaust system and a cooling system, and the air system and the hydrogen system are respectively connected to the stack assembly and the exhaust system.

3. The hydrogen-electric hybrid vehicle according to claim 2, characterized in that, The air system includes an intake pipe, an air filter, an air compressor, an intercooler and a throttle valve assembly; the throttle valve assembly is respectively communicated with the stack assembly, the intercooler and the exhaust system.

4. The hydrogen-electric hybrid vehicle according to claim 3, characterized in that, The throttle valve assembly includes an intake valve, an exhaust valve and a bypass valve; the intake pipe, the air filter, the air compressor, the intercooler and the intake valve are sequentially communicated; the intake valve is simultaneously communicated with the stack assembly; one end of the exhaust valve is communicated with the stack assembly, and the other end of the exhaust valve is communicated with the exhaust system; one end of the bypass valve is communicated with the intercooler, and the other end of the bypass valve is communicated with the exhaust system.

5. The hydrogen-electric hybrid vehicle according to claim 3, characterized in that, The intake pipe, the air filter and the air compressor are located on one side of the stack assembly; the intercooler and the throttle valve assembly are located on the other side of the stack assembly.

6. The hydrogen-electric hybrid vehicle according to claim 4, characterized in that, The air compressor is electrically connected to the DCF assembly; the intake pipe, the air compressor, the intercooler and the throttle valve assembly are connected through an intake hose.

7. The hydrogen-electric hybrid vehicle according to claim 3, characterized in that, The air system further includes a humidifier, and the humidifier is located between the air compressor and the intercooler and is communicated with the air compressor and the intercooler.

8. The hydrogen-electric hybrid vehicle according to claim 2, characterized in that, The hydrogen system includes a preheater and a hydrogen processor; one end of the preheater is communicated with the hydrogen storage system, and the other end of the preheater is communicated with the hydrogen processor; the hydrogen processor is respectively communicated with the stack assembly and the exhaust system.

9. The hydrogen-electric hybrid vehicle according to claim 8, characterized in that, The hydrogen processor and the preheater are located on the side of the stack assembly close to the power battery system.

10. The hydrogen-electric hybrid vehicle according to claim 8, characterized in that, The hydrogen processor is an integrated ejector water separator, and the integrated ejector water separator includes a water separator and an ejector communicated with the inside of the water separator; the ejector is provided with a primary gas inlet communicated with the hydrogen storage system and a mixed gas outlet communicated with the stack assembly; the water separator is provided with a secondary gas inlet communicated with the stack assembly and a drain port communicated with the exhaust system.

11. The hydrogen-electric hybrid vehicle according to claim 8, characterized in that, The hydrogen processor is an integrated circulation pump water separator, and the integrated circulation pump water separator includes a water separator and a circulation pump installed on the water separator; the water separator is provided with a secondary gas inlet communicated with the stack assembly, an internal outlet communicated with the circulation pump and a drain port communicated with the exhaust system; the circulation pump is provided with an internal inlet communicated with the water separator and a gas outlet communicated with the stack assembly.

12. The hydrogen-electric hybrid vehicle according to claim 2, characterized in that, The exhaust system includes a water collector and a muffler; the water collector is simultaneously connected to the air system, the hydrogen system and the muffler; the water collector and the muffler are arranged under the vehicle floor.

13. The hydrogen-electric hybrid vehicle according to claim 3, characterized in that, The cooling system includes a heat dissipation assembly, a water pump and a PTC heater; the fuel cell stack assembly includes a water inlet and a water outlet, the water pump is connected to the water inlet, and the heat dissipation assembly is connected to the water outlet.

14. The hydrogen-electric hybrid vehicle according to claim 13, characterized in that, The heat dissipation assembly, the water pump and the PTC heater are located in the front engine compartment, the heat dissipation assembly and the intake pipe are arranged on the front end frame and the heat dissipation assembly is located below the intake pipe; the heat dissipation assembly, the water pump and the fuel cell stack assembly are connected by silicone hoses.

15. The hydrogen-electric hybrid vehicle according to claim 2, characterized in that, It further includes a control system; the control system is arranged in the front engine compartment and is electrically connected to the drive system, the power battery system, the DCF assembly, the hydrogen fuel cell system and the hydrogen storage system.

16. The hydrogen-electric hybrid vehicle according to claim 15, characterized in that, The control system includes a VCU controller and an FCU controller; the FCU controller and the VCU controller interact with each other through PCAN.

17. The hydrogen-electric hybrid vehicle according to claim 1, characterized in that, The drive system includes a front drive motor; the front drive motor is arranged on the front subframe; the fuel cell stack assembly and the DCF assembly are arranged under the vehicle floor, the fuel cell stack assembly and the DCF assembly are arranged on the vehicle longitudinal beam, and in the vehicle width direction, the DCF assembly is located on one side of the fuel cell stack assembly.

18. The hydrogen-electric hybrid vehicle according to claim 17, characterized in that, The fuel cell stack assembly includes a plurality of mountings; the plurality of mountings are arranged on both sides of the fuel cell stack assembly in the vehicle width direction; the fuel cell stack assembly is mounted on the vehicle longitudinal beam through the plurality of mountings.

19. The hydrogen-electric hybrid vehicle according to claim 17, characterized in that, The drive system further includes a rear drive motor; the projections of the front drive motor, the rear drive motor, the fuel cell stack assembly, the DCF assembly and the hydrogen storage system on the vehicle floor do not overlap.

20. The hydrogen-electric hybrid vehicle according to claim 1, characterized in that, The drive system only includes a rear drive motor; the hydrogen fuel cell system and the DCF assembly are located in the front engine compartment and are arranged on the front subframe, the DCF assembly is located below the hydrogen fuel cell system; the rear drive motor is arranged on the rear subframe.

21. The hydrogen-electric hybrid vehicle according to claim 1, characterized in that, The hydrogen storage system is located between the power battery system and the rear subframe; the hydrogen storage system includes a hydrogen tank and a hydrogen filling port.

Images