CN114194040A

CN114194040A - Fuel cell power system and automobile

Info

Publication number: CN114194040A
Application number: CN202210002659.5A
Authority: CN
Inventors: 张建军; 熊欣; 吴小龙; 郭昕; 房拴虎
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-03-18

Abstract

The embodiment of the application provides a fuel cell power system and an automobile, relates to the technical field of new energy automobiles, and is used for solving the problems that the fuel cell system is inconvenient to maintain and has poor safety. The fuel cell power system provided by the embodiment of the application comprises an electric drive module, a main frame and a fuel cell module. The electric drive module is arranged in an engine compartment of the automobile, and the output end of the electric drive module is in transmission connection with wheels of the automobile so as to drive the automobile to move forwards. The main frame is used for being arranged in an engine compartment of an automobile, is positioned above the electric drive module and is used for being fixed with an automobile body of the automobile. The fuel cell module includes a fuel cell stack supported above the main frame for providing electrical power to the electric drive module. The fuel cell power system provided by the embodiment of the application is used for providing power for the automobile.

Description

Fuel cell power system and automobile

Technical Field

The application relates to the technical field of new energy automobiles, in particular to a fuel cell power system and an automobile.

Background

The power system in the fuel cell automobile comprises two parts, namely a fuel cell module and an electric drive module, wherein the fuel cell module comprises a fuel cell stack and the like, and the electric drive module comprises a motor, a gear reduction box and the like. The current fuel cell technology is not mature enough, the energy density and integration degree of the fuel cell stack are not high enough, and the fuel cell stack is large in size relative to an automobile engine compartment, so that the reasonable arrangement of the fuel cell stack and an electric drive module in the engine compartment is crucial to improve the endurance of the fuel cell stack.

In the related art, a fuel cell power system is disclosed, in which a fuel cell stack is disposed at a front side of an engine compartment in a length direction of an automobile, and a motor and a gear reduction box are disposed at a rear side of the fuel cell, so that the fuel cell stack has a large length in a width direction of the automobile, and the electric quantity of the fuel cell stack is large. However, the fuel cell power system still has the following problems:

when the front part of the automobile is impacted, the fuel cell stack is easily damaged and can be extruded with the motor and the gear reduction box, so that the damage degree of the fuel cell stack is increased, and the damaged fuel cell stack is easily subjected to dangers such as high temperature, explosion and the like, so that the safety of a fuel cell power system is poor; the fuel cell is not convenient to be taken out or installed independently, once the fuel cell stack is required to be disassembled and maintained, the vehicle must be lifted, wheels, a front suspension and the like are disassembled in sequence, and the maintenance is extremely inconvenient.

Disclosure of Invention

In view of this, embodiments of the present application provide a fuel cell power system and an automobile, so as to solve the problems that the fuel cell system is inconvenient to maintain and has poor safety.

In order to achieve the above object, a first aspect of the embodiments of the present application provides a fuel cell power system, which includes an electric drive module, a main frame, and a fuel cell module. The electric drive module is arranged in an engine compartment of the automobile, and the output end of the electric drive module is in transmission connection with wheels of the automobile so as to drive the automobile to move forwards. The main frame is used for being arranged in an engine compartment of an automobile, is positioned above the electric drive module and is used for being fixed with an automobile body of the automobile. The fuel cell module includes a fuel cell stack supported above the main frame for providing electrical power to the electric drive module.

Further, the fuel cell stack is detachably connected to the main frame.

Further, the main frame is detachably connected with the fuel cell stack through a plurality of first fasteners, and the plurality of first fasteners are arranged along the circumferential direction of the main frame.

Further, the fuel cell module further includes an inverter detachably connected to an upper side of the fuel cell stack.

Further, the fuel cell module further includes a junction box detachably connected to one side of the inverter in the width direction of the vehicle.

Further, the fuel cell module further includes a fuel system control unit detachably connected to one side of the fuel cell stack in a width direction of the vehicle.

Further, the fuel cell module further includes an accessory assembly removably connected within the main frame and positioned below the fuel cell stack.

Further, the accessory assembly includes an air compressor, an intercooler, a heater, a fuel return pump, a water pump, and an exhaust pipe.

Further, the fuel cell module also comprises an air inlet system, the air inlet system is detachably connected with the main frame, and an air inlet of the air inlet system is higher than that of the main frame.

Further, the air intake system includes bleed air pipe, air cleaner and the intake pipe that communicates in proper order, and the entry of bleed air pipe is higher than the main frame setting, intake pipe and fuel cell stack intercommunication.

Furthermore, the main frame comprises two cross beams parallel to each other and two longitudinal beams parallel to each other, the end parts of the two cross beams are respectively fixed with the end parts of the two longitudinal beams to form a frame-shaped structure, and an included angle is formed between the arrangement direction of the main frame and the vertical direction.

Furthermore, the main frame further comprises an auxiliary cross beam and an auxiliary longitudinal beam, the auxiliary cross beam is parallel to the cross beam, the auxiliary longitudinal beam is parallel to the longitudinal beam, and the auxiliary cross beam and the auxiliary longitudinal beam are fixed in the frame-shaped structure, so that the main frame is in a grid structure.

Further, the main frame is fixed with the vehicle body through the first suspension structure.

Further, the electric drive module is fixed with the vehicle body through a second suspension structure.

Further, the electric drive module comprises a drive motor, a reduction gearbox and a motor controller, the drive motor is electrically connected with the fuel cell module, the drive motor is connected with a transmission shaft of the automobile through the reduction gearbox, and the motor controller is used for controlling the working state of the drive motor.

In a second aspect of the embodiments of the present application, an automobile is provided, which includes a vehicle body and the fuel cell power system provided in the first aspect of the embodiments of the present application. Wherein the vehicle body is formed with an engine compartment within which the fuel cell power system is disposed.

Further, the portion of the vehicle body for forming the engine compartment includes a cabin side member and a sub-frame, the cabin side member being located above the sub-frame, the electric drive module of the fuel cell power system being supported on the sub-frame, and the main frame of the fuel cell power system being supported on the cabin side member.

According to the fuel cell power system provided by the embodiment of the application, the fuel cell stack and the electric drive module are arranged along the vertical direction, and the fuel cell stack is positioned above the electric drive module. The main frame is disposed between the fuel cell stack and the electric drive module, and is fixed to a body of an automobile to support the fuel cell stack. The fuel cell stack is supported on the upper side of the main frame by the aid of the arrangement structure, the fuel cell stack can be simply and quickly taken out, installed and maintained from the upper side of an engine compartment, engineering that manpower, material resources and financial resources are consumed when vehicles are lifted and most of parts in the front of the vehicles are disassembled is avoided, and maintenance convenience and efficiency are greatly improved. In addition, if a traffic accident occurs to the automobile, the lower part of the engine room is more easily collided, and the fuel cell stack is arranged above the electric drive module, so that the impact force on the fuel cell can be reduced to a certain degree, and the safety of a fuel cell power system is facilitated. Moreover, the fuel cell stack is arranged above the electric drive module, so that mutual extrusion of the fuel cell stack and the electric drive module in the process of impact on the front part of the automobile can be avoided, the damage to the fuel cell stack and the electric drive module is favorably reduced, and the safety of a fuel cell power system is improved. Therefore, the fuel cell power system provided by the embodiment of the application has the advantages of convenience in maintenance and low possibility of damage.

Drawings

Fig. 1 is a schematic structural diagram of a fuel cell power system according to an embodiment of the present application from a first perspective mounted on a vehicle body;

FIG. 2 is a schematic structural diagram of a fuel cell power system according to an embodiment of the present disclosure from a second perspective mounted on a vehicle body;

fig. 3 is a schematic structural view of a fuel cell module according to an embodiment of the present application mounted on a main frame;

FIG. 4 is a schematic view of an accessory assembly of an embodiment of the present application mounted to a main frame;

FIG. 5 is a schematic view of a main frame according to an embodiment of the present application;

fig. 6 is a schematic structural view of an electric drive module mounted on a vehicle body according to an embodiment of the present application.

Reference numerals:

1-a nacelle stringer; 2-auxiliary frame; 3-an electric drive module; 31-a drive motor; 32-reduction gearbox; 33-a motor controller; 4-a main frame; 41-a cross beam; 42-longitudinal beams; 43-a secondary beam; 44-secondary stringers; 45-fixing holes; 46-a first fastener; 5-a fuel cell module; 51-a fuel cell stack; 52-an inverter; 521-a second fastener; 53-junction box; 531-third fastener; 54-a fuel-electric system control unit; 55-an accessory component; 551-exhaust pipe; 552-a compressor; 553-an intercooler; 554-a heater; 555-fuel return pump; 556-water pump; 56-an air intake system; 561-a gas-guiding pipe; 562-an air filter; 563-inlet pipe; 6-a first suspension structure; 7-a second suspension structure; 8-a transmission shaft; 9-support.

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.

In addition, in the embodiments of the present application, directional terms such as "upper", "lower", "left", and "right" are defined with respect to the schematically-placed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and may be changed accordingly according to changes in the orientation in which the components are placed in the drawings.

In the embodiments of the present application, unless otherwise explicitly specified or limited, the term "connected" is to be understood broadly, for example, "connected" may be a fixed connection, a detachable connection, or an integral body; may be directly connected or indirectly connected through an intermediate.

In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The power system in the fuel cell automobile comprises two parts, namely a fuel cell module and an electric drive module, wherein the fuel cell module comprises a fuel cell stack and the like, and the electric drive module comprises a motor, a gear reduction box and the like. The fuel cell stack is used for providing electric energy for the motor, and the motor is used for being in transmission connection with a transmission shaft of an automobile through a gear reduction box so as to drive wheels of the automobile to rotate. The current fuel cell technology is not mature enough, the energy density and integration degree of the fuel cell stack are not high enough, and the fuel cell stack is large in size relative to an automobile engine compartment, so that the reasonable arrangement of the fuel cell stack and an electric drive module in the engine compartment is crucial to improve the endurance of the fuel cell stack.

when the front part of the automobile is impacted, the fuel cell stack is easily damaged and can be extruded with the motor and the gear reduction box, so that the damage degree of the fuel cell stack is increased, and the damaged fuel cell stack is easily subjected to dangers such as high temperature, explosion and the like, so that the automobile is poor; the fuel cell is not convenient to be taken out or installed independently, once the fuel cell stack is required to be disassembled and maintained, the vehicle must be lifted, wheels, a front suspension and the like are disassembled in sequence, and the maintenance is extremely inconvenient. It should be noted that the front side along the length direction of the vehicle is the side close to the vehicle head, and the rear side along the length direction of the vehicle is the side close to the vehicle tail.

In view of this, in order to improve the safety of the automobile and facilitate the maintenance of the fuel cell power system of the automobile, the embodiment of the present application provides an automobile, which includes an automobile body and a fuel cell power system. Wherein the vehicle body is formed with an engine compartment within which the fuel cell power system is disposed.

Specifically, referring to fig. 1, 2 and 3, the fuel cell power system includes an electric drive module 3, a main frame 4 and a fuel cell module 5. The electric drive module 3 is arranged in an engine compartment of the automobile, and an output end of the electric drive module 3 is in transmission connection with wheels of the automobile to drive the automobile to move forward. The main frame 4 is used for being arranged in an engine compartment of an automobile, the main frame 4 is located above the electric drive module 3, and the main frame 4 is used for being fixed with the automobile body of the automobile. A fuel cell module 5 is supported above the main frame 4, the fuel cell module 5 being used to supply electrical power to the electric drive module 3.

In this configuration, the fuel cell stack 51 is vertically aligned with the electric drive module 3, and the fuel cell stack 51 is located above the electric drive module 3. The main frame 4 is disposed between the fuel cell stack 51 and the electric drive module 3, and is fixed to a body of the automobile to support the fuel cell stack 51. Utilize fuel cell stack 51 to support this kind of arrangement structure in the upside of main frame 4, under the vehicle state of parking naturally, the staff can open convenient taking out and installation from the engine compartment top of bonnet, fuel cell stack 51 has avoided lifting the vehicle, has dismantled the engineering that the anterior most parts of vehicle etc. consume manpower, material resources, financial resources, has promoted maintenance convenience and efficiency greatly. In addition, if a traffic accident occurs in the automobile, the lower part of the engine compartment is more likely to be subjected to a large impact, and the fuel cell stack 51 is arranged above the electric drive module 3, so that the impact force applied to the fuel cell can be reduced to a certain extent, and the safety of the fuel cell power system is facilitated. Moreover, the fuel cell stack 51 is arranged above the electric drive module 3, so that mutual extrusion of the fuel cell stack 51 and the electric drive module 3 in the process of impact on the front part of the automobile can be avoided, the damage to the fuel cell stack 51 and the electric drive module 3 can be reduced, and the safety of a fuel cell power system can be improved. Therefore, the fuel cell power system provided by the embodiment of the application has the advantages of convenience in maintenance and low possibility of damage.

Further, the fuel cell stack 51 and the electric drive module 3 are arranged vertically, so that the dimensions of the fuel cell stack 51 in the vehicle width and length directions can be increased as much as possible, and the power generation amount of the fuel cell system can be increased. Moreover, the fuel cell stack 51 and the electric drive module 3 are arranged up and down relative to the fuel cell stack 51 and the electric drive module 3 along the length direction of the automobile, so that the length of the fuel cell power system along the length direction of the automobile is reduced, and the fuel cell power system is convenient to install in an engine compartment.

In some embodiments, referring to fig. 1 and 2, the part of the vehicle body for forming the engine compartment includes a compartment rail 1 and a subframe 2, the compartment rail 1 is located above the subframe 2, an electric drive module 3 of the fuel cell power system is supported on the subframe 2, and a main frame 4 of the fuel cell power system is supported on the compartment rail 1. In such a structure, the axle is connected with the cabin longitudinal beam 1 through the auxiliary frame 2, which is common knowledge and is not described herein again, the cabin longitudinal beam 1 is located above the auxiliary frame 2, the cabin longitudinal beam 1 and the auxiliary frame 2 can be naturally used for supporting the main frame 4 and the electric drive module 3, and a worker can mount the fuel cell stack 51 and the electric drive module 3 without greatly modifying the structure of the engine cabin, so that the power system of the fuel cell stack 51 has better universality. Specifically, in some embodiments, the subframe 2 is a frame-shaped structure, and the subframe 2 and the cabin longitudinal beam 1 are connected to the cabin longitudinal beam 1 through four supporting seats 9 distributed along the circumferential direction of the subframe 2.

Preferably, in some embodiments, referring to fig. 1 and 2, two opposite sides of the main frame 4 are supported on two nacelle stringers 1, respectively. With the adoption of the structure, the two engine compartment longitudinal beams 1 can stably support the main frame 4.

Preferably, in some embodiments, referring to fig. 1 and 2, the main frame 4 is fixed to the vehicle body by the first suspension structure 6. With the structure, the first suspension structure 6 can reduce the influence of the vibration of the automobile body on the main frame 4 in the advancing process of the automobile, and is beneficial to prolonging the service life of the main frame 4 and the service life of the fuel cell module 5. Preferably, in some embodiments, the number of the first suspension structures 6 is two, and two opposite sides of the main frame 4 are supported on the two nacelle stringers 1 by the two first suspension structures 6, respectively.

Preferably, in some embodiments, referring to fig. 1 and 2, the fuel cell stack 51 is the same as the extension plane of the main frame 4. With this configuration, the main frame 4 can sufficiently support the fuel cell stack 51. Preferably, in some embodiments, the extension planes of the fuel cell stack 51 and the main frame 4 are both horizontal.

Preferably, in some embodiments, referring to fig. 1, 2 and 3, the fuel cell stack 51 is removably attached to the main frame 4. With such a structure, the fuel cell stack 51 can be easily assembled and disassembled by workers. Specifically, when the fuel cell stack 51 needs to be replaced, the worker may detach the fuel cell stack 51 from the main frame 4 or attach the fuel cell stack 51 to the main frame 4 without detaching the main frame 4. On this basis, exemplarily, in some embodiments, the main frame 4 and the fuel cell stack 51 are detachably connected by a plurality of first fasteners 46, and the plurality of first fasteners 46 are arranged along the circumferential direction of the main frame 4. Specifically, the main frame 4 is formed with a fixing hole 45, and the fixing hole 45 is used for penetrating a first fastener 46. The first fasteners 46 may be bolts, screws, or studs, among others. On this basis, in some embodiments, the number of the fixing holes 45 is plural, and the plural fixing holes 45 are provided along the circumferential direction of the main frame 4.

Of course, in some other embodiments, the fuel cell stack 51 and the main frame 4 may be detachably connected by a snap fit, a pin connection, a magnetic connection, or the like.

Further, in some embodiments, the fuel cell stack 51 is a hydrogen fuel cell stack 51. The hydrogen fuel cell stack 51 has a relatively high efficiency, low pollution, low noise, and is suitable for powering an automobile.

Further, referring to fig. 1, 2 and 3, the fuel cell module 5 further includes an inverter 52, and the inverter 52 is detachably connected to an upper side of the fuel cell stack 51. With this structure, the inverter 52 can be detached separately. Specifically, the inverter 52 is detachably connected to the upper side of the fuel cell stack 51, so that a worker can easily open the engine cover to take out and mount the inverter 52 from above the nacelle, and maintenance, replacement, and the like of the inverter 52 can be easily performed without lifting the vehicle, detaching the chassis and the engine nacelle parts, and the like. On this basis, in some embodiments, the inverter 52 is detachably connected to the upper side of the fuel cell stack 51 by the second fastener 521. Of course, in some other embodiments, the inverter 52 and the upper side of the fuel cell stack 51 may be detachably connected by a snap fit, a pin connection, a magnetic connection, or the like.

In some embodiments, referring to fig. 1, 2 and 3, the inverter 52 extends in a horizontal direction. In this configuration, the inverter 52 is disposed on the upper side of the fuel cell stack 51, which contributes to space saving.

Further, referring to fig. 1, 2 and 3, the fuel cell module 5 further includes a junction box 53, and the junction box 53 is detachably connected to one side of the inverter 52 in the width direction of the vehicle. In this configuration, the terminal box 53 is detachably connected to the fuel cell stack 51, so that the terminal box 53 can be separately attached and detached. Specifically, the worker can easily open the hood to take out and mount the junction box 53 from above the nacelle, and can easily perform maintenance, replacement, and the like of the inverter 52 without lifting the vehicle, detaching the chassis and the engine compartment parts. In addition, the junction box 53 is detachably connected to one side of the inverter 52 in the width direction, which contributes to space saving. On this basis, in some embodiments, the inverter 52 is detachably connected to the fuel cell stack 51 by the third fastener 531. Of course, in some other embodiments, the inverter 52 and the upper side of the fuel cell stack 51 may be detachably connected by a snap fit, a pin connection, a magnetic connection, or the like.

In some embodiments, referring to fig. 1, 2 and 3, the junction box 53 extends in a vertical direction. With such a structure, the junction box 53 is detachably connected to one side of the inverter 52 in the width direction of the vehicle, which is advantageous for space saving.

Further, referring to fig. 1, 2 and 3, the fuel cell module 5 further includes a fuel system control unit 54, and the fuel system control unit 54 is detachably connected to one side of the fuel cell stack 51 in the width direction of the vehicle. In this way, the fuel system control unit 54 can be separately assembled and disassembled. Specifically, the fuel system control unit 54 is detachably connected to the fuel cell stack 51, so that a worker can conveniently open the engine cover to take out and mount the fuel system control unit 54 from above the nacelle, and maintenance, replacement, and the like of the fuel system control unit 54 can be conveniently realized without lifting the vehicle, detaching the chassis and the engine nacelle parts. In addition, the terminal block 53 is detachably connected to one side of the fuel cell stack 51 in the width direction, which contributes to space saving.

In some embodiments, referring to fig. 1, 2 and 3, the mems control unit 54 extends in a vertical direction. With such a configuration, the junction box 53 is detachably connected to one side of the fuel cell stack 51 in the width direction of the vehicle, which is advantageous for space saving.

In some embodiments, referring to fig. 1, 2 and 3, the terminal box 53 and the fuel cell system control unit 54 are located on the same side of the fuel cell stack 51 along the width direction of the vehicle. The structure is beneficial to saving space.

Further, referring to fig. 1, fig. 2 and fig. 3, the fuel cell module 5 further includes an air intake system 56, the air intake system 56 is detachably connected to the main frame 4, and an air inlet of the air intake system 56 is disposed higher than the main frame 4. With such a structure, the position of the air inlet is high, which is beneficial to avoiding the situation that the air inlet is submerged by mud or water, and the fuel cell stack 51 can not suck air, thereby being beneficial to relieving the problem of power interruption of the automobile caused by interference. Note that the intake system 56 is used to introduce air into the fuel cell stack 51. It will be appreciated that the positioning of the fuel cell stack 51 at a position above the engine compartment facilitates the placement of the air intake system 56, and the air intake can be easily positioned at a relatively high position. Specifically, in some embodiments, the air intake system 56 includes a bleed air pipe 561, an air filter 562, and an intake pipe 563 that communicate in this order, the bleed air pipe 561 having an inlet disposed higher than the main frame 4, and the intake pipe 563 communicating with the fuel cell stack 51. In this configuration, air in the external environment enters the air filter 562 through the bleed air pipe 561, and the air is filtered by the air filter 562 and then enters the fuel cell stack 51 through the intake air pipe 563.

In some embodiments, referring to fig. 1, 2 and 3, the air filter 562 and the fuel cell system control unit 54 are respectively located on two opposite sides of the fuel cell stack 51 along the width direction of the vehicle. In this configuration, there is a reduced space for arranging the air filter 562 and the fuel cell system control unit 54 in the engine compartment.

In some embodiments, the air intake is disposed behind and above a front bumper of the vehicle, and above an upper edge of the radiator tank. According to the structure, the front bumper can protect the air inlet.

In order to provide a fuel cell system with sufficient power generation, in some embodiments, referring to fig. 1, 2 and 3, the air intake is disposed near the front of the engine compartment, which facilitates smooth air circulation within the air intake system 56.

In order to allow the fuel cell system to have a sufficient power generation capacity, in some embodiments, referring to fig. 1, 2, and 3, the air inlet is disposed forward. In such a structural form, in the advancing process of the automobile, airflow around the automobile can easily enter the air inlet, and the airflow of the air inlet system 56 is large, so that the fuel cell system can be ensured to have enough power generation.

Further, referring to fig. 4, the fuel cell module 5 further includes an accessory assembly 55, and the accessory assembly 55 is detachably connected to the main frame 4 and located below the fuel cell stack 51. In such a structural form, the accessory component 55 is arranged in the space enclosed by the main frame 4, and the fuel cell stack 51 is arranged below the main frame 4, so that the main frame 4 can sufficiently support and protect the accessory component 55, the space is saved, the space occupied by the main frame 4 is not wasted, the structure of the fuel cell power system is compact, and the arrangement of the fuel cell power system in an engine compartment is facilitated. Specifically, in some embodiments, the accessory assembly 55 includes an air compressor 552, an intercooler 553, a heater 554, a fuel return pump 555, a water pump 556, and an exhaust duct 551. Specifically, air flowing out of the intake pipe 563 is introduced into the fuel cell stack 4 via the air compressor 522, the intercooler 5533, and the like, and then discharged out of the fuel cell stack 4 via the exhaust pipe 551.

In some embodiments, referring to fig. 4, the space enclosed by the main frame 4 may also be used for installing cables. Structural style like this makes main frame 4 can carry out comparatively abundant support and protection to the cable on the one hand, is favorable to alleviateing rocking of car in-process cable of marcing, and then is favorable to avoiding the condition of opening circuit to take place. On the other hand, the fuel cell power system is beneficial to saving space, so that the cable does not occupy extra space in an engine compartment, and the structure of the fuel cell power system is more compact.

Further, referring to fig. 5, the main frame 4 includes two cross beams 41 parallel to each other and two longitudinal beams 42 parallel to each other, ends of the two cross beams 41 are respectively fixed with ends of the two longitudinal beams 42 to form a frame-shaped structure, and an included angle is formed between the arrangement direction of the main frame 4 and the vertical direction. With this configuration, the main frame 4 can be supported on the vehicle body with stability, and the fuel cell stack 51 can be supported on the main frame 4 with stability. Preferably, in some embodiments, the main frame 4 is arranged in a direction perpendicular to the vertical direction.

In some embodiments, referring to fig. 5, the main frame 4 further includes a secondary cross beam 43 and a secondary longitudinal beam 44, the secondary cross beam 43 is parallel to the cross beam 41, the secondary longitudinal beam 44 is parallel to the longitudinal beam 42, and the secondary cross beam 43 and the secondary longitudinal beam 44 are fixed in the frame structure, so that the main frame 4 is in a grid structure. With such a configuration, the sub cross member 43 and the sub longitudinal member 44 can reinforce the main frame 4, and improve the strength and rigidity of the main frame 4. Furthermore, the grid-like structure of the main frame 4 also facilitates the installation of the fuel cell stack 51, the accessory components 55, and the cables and the like on the main frame 4. On the basis, in some embodiments, the number of the secondary longitudinal beams 44 and the longitudinal beams 42 is multiple, the plurality of secondary longitudinal beams 44 are parallel to the longitudinal beams 42, and the plurality of cross beams 41 are parallel to the cross beams 41.

Further, referring to fig. 6, the electric drive module 3 includes a drive motor 31, a reduction box 32 and a motor controller 33, the drive motor 31 is electrically connected to the fuel cell module 5, the drive motor 31 is connected to the transmission shaft 8 of the vehicle through the reduction box 32, and the motor controller 33 is configured to control a working state of the drive motor 31. Specifically, the fuel cell reactor is used for providing electric energy for the driving motor 31, the output end of the driving motor 31 is in transmission connection with the transmission shaft 8 through the reduction gearbox 32 so as to drive the transmission shaft 8 to rotate, and the transmission shaft 8 is used for driving wheels to rotate so as to enable the automobile to move forward. In some embodiments, the electric drive module 3 is fixed to the vehicle body by means of a second suspension structure 7. In such a structural form, the second suspension structure 7 can reduce the influence of the vibration of the vehicle body on the electric drive module 3 in the traveling process of the vehicle, and is favorable for prolonging the service life of the electric drive module 3. Preferably, in some embodiments, the subframe 2 is a frame-shaped structure, and the number of the second suspension structures 7 is three. Of the three second suspension structures 7, one second suspension structure 7 is located on the side of the subframe 2 close to the vehicle tail, and the other two second suspension structures 7 are located on the side of the subframe 2 close to the vehicle head.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fuel cell power system, comprising:

the electric drive module is arranged in an engine compartment of an automobile, and the output end of the electric drive module is in transmission connection with wheels of the automobile so as to drive the automobile to move forwards;

a main frame for being disposed within the engine compartment, the main frame being located above the electric drive module, the main frame for being secured to a body of the automobile;

a fuel cell module including a fuel cell stack supported above the main frame, the fuel cell stack for providing electrical power to the electric drive module.

2. The fuel cell power system of claim 1, wherein the fuel cell stack is removably coupled to the main frame.

3. The fuel cell power system according to claim 2, wherein the main frame is detachably connected to the fuel cell stack by a plurality of first fastening members arranged along a circumferential direction of the main frame.

4. The fuel cell power system according to claim 1, wherein the fuel cell module further comprises an inverter detachably connected to an upper side of the fuel cell stack.

5. The fuel cell power system according to claim 4, wherein the fuel cell module further includes a junction box detachably connected to one side of the inverter in a width direction of the automobile.

6. The fuel cell power system according to claim 1, wherein the fuel cell module further comprises a fuel system control unit detachably connected to one side of the fuel cell stack in a width direction of the automobile.

7. The fuel cell power system of claim 1, wherein the fuel cell module further comprises an accessory assembly removably connected within the main frame and below the fuel cell stack.

8. The fuel cell power system of claim 7, wherein the accessory assembly includes an air compressor, an intercooler, a heater, a fuel return pump, a water pump, and an exhaust pipe.

9. The fuel cell power system of claim 1, wherein the fuel cell module further comprises an air intake system removably coupled to the main frame, the air intake system having an air inlet disposed higher than the main frame.

10. The fuel cell power system according to claim 9, wherein the air intake system comprises a bleed air pipe, an air filter and an air intake pipe which are communicated in sequence, an inlet of the bleed air pipe is higher than the main frame, and the air intake pipe is communicated with the fuel cell stack.

11. The fuel cell power system according to claim 1, wherein the main frame includes two cross beams parallel to each other and two longitudinal beams parallel to each other, ends of the two cross beams are fixed to ends of the two longitudinal beams, respectively, to form a frame-shaped structure, and an angle is formed between an arrangement direction of the main frame and a vertical direction.

12. The fuel cell power system of claim 11, wherein the main frame further comprises secondary cross beams and secondary longitudinal beams, the secondary cross beams being parallel to the cross beams, the secondary longitudinal beams being parallel to the longitudinal beams, the secondary cross beams and the secondary longitudinal beams being secured within the frame structure to provide the main frame with a grid-like structure.

13. The fuel cell power system of claim 1, wherein the main frame is secured to the vehicle body by a first suspension structure.

14. The fuel cell power system of claim 1, wherein the electric drive module is secured to the vehicle body by a second suspension structure.

15. The fuel cell power system according to any one of claims 1 to 14, wherein the electric drive module comprises a drive motor, a reduction gearbox and a motor controller, the drive motor is electrically connected with the fuel cell module, the drive motor is connected with a transmission shaft of the automobile through the reduction gearbox, and the motor controller is used for controlling the working state of the drive motor.

16. An automobile, comprising:

a vehicle body formed with an engine compartment;

the fuel cell power system of any one of claims 1 to 15 disposed within the engine compartment.

17. The automobile of claim 16, wherein the portion of the body forming the engine compartment includes a cabin rail and a subframe, the cabin rail being located above the subframe, the electric drive module of the fuel cell power system being supported on the subframe, the main frame of the fuel cell power system being supported on the cabin rail.