阅读说明：本技术 燃料电池车辆 (Fuel cell vehicle ) 是由 延承俊 陈明广 郑楠澈 于 2020-06-05 设计创作，主要内容包括：本申请公开一种燃料电池车辆。燃料电池车辆包括：前燃料电池,安装在第一空间中；以及后燃料电池,安装在基于燃料电池车辆行驶的方向位于第一空间的后侧的第二空间中。后燃料电池包括基于地面比前燃料电池的顶表面低的顶表面。(The application discloses a fuel cell vehicle. A fuel cell vehicle includes: a front fuel cell installed in the first space; and a rear fuel cell mounted in a second space located on a rear side of the first space based on a direction in which the fuel cell vehicle travels. The rear fuel cell includes a top surface that is lower than a top surface of the front fuel cell based on ground.)

1. A fuel cell vehicle comprising:

a front fuel cell installed in the first space; and

a rear fuel cell installed in a second space located at a rear side of the first space based on a direction in which the fuel cell vehicle travels, and including a top surface lower than a top surface of the front fuel cell based on a ground surface.

2. The fuel cell vehicle according to claim 1, further comprising:

a first body frame and a second body frame extending in a first direction and opposed to each other in a second direction intersecting the first direction, the first direction being a direction in which the fuel cell vehicle travels,

wherein a space between the first body frame and the second body frame spaced apart from each other in the second direction includes the first space and the second space.

3. The fuel cell vehicle according to claim 2, further comprising:

a cab; and

a loading part located at the rear side of the cab,

wherein each of the cab and the stowage portion is supported by the first body frame and the second body frame.

4. The fuel cell vehicle according to claim 3, further comprising:

a hydrogen storage device located between the cab and the loading portion in the first direction.

5. The fuel cell vehicle according to claim 4,

the rear fuel cell is installed below the hydrogen storage device.

6. The fuel cell vehicle according to claim 5,

the top surface of the rear fuel cell is lower than the bottom surface of the hydrogen storage device based on the ground.

7. The fuel cell vehicle according to claim 5,

a height difference between a top surface of the front fuel cell and a top surface of the rear fuel cell is greater than a height difference between a top surface of the rear fuel cell and a bottom surface of the hydrogen storage device.

8. The fuel cell vehicle according to claim 3,

the front fuel cell is mounted below the cab.

9. The fuel cell vehicle according to claim 8, further comprising:

a front axle, a rear axle and a front axle,

wherein the front fuel cell is mounted between the cab and the front axle.

10. The fuel cell vehicle according to claim 3,

a top surface of the front fuel cell is located between a top surface of each of the first and second body frames and a bottom surface of the cab.

11. The fuel cell vehicle according to claim 3,

the rear fuel cell is mounted below the loading portion.

12. The fuel cell vehicle according to claim 11,

the top surface of the rear fuel cell is lower than the bottom surface of the loading portion based on the ground.

13. The fuel cell vehicle according to claim 11,

a height difference between a top surface of the front fuel cell and a top surface of the rear fuel cell is greater than a height difference between a top surface of the rear fuel cell and a bottom surface of the loading part.

14. The fuel cell vehicle according to claim 3,

a spacing distance between the first body frame and the second body frame in the second direction gradually decreases from a front portion of the fuel cell vehicle to a rear portion of the fuel cell vehicle based on a direction in which the fuel cell vehicle travels.

15. The fuel cell vehicle according to claim 14,

the width of the front fuel cell in the second direction is larger than the width of the rear fuel cell in the second direction, and

a width of the rear fuel cell in the second direction is smaller than a minimum separation distance between the first body frame and the second body frame in the second direction.

16. The fuel cell vehicle according to claim 3, further comprising:

a plurality of front connection members connecting the front fuel cell to the first body frame and the second body frame; and

a plurality of rear connection members connecting the rear fuel cell to the first body frame and the second body frame.

17. The fuel cell vehicle according to claim 16, further comprising:

a plurality of common connecting members connecting some of the plurality of front connecting members and some of the plurality of rear connecting members to the first body frame and the second body frame.

18. The fuel cell vehicle according to claim 17,

each of the plurality of front connection members includes:

a first mounting support bracket connected to an end of the front fuel cell; and

a first independent mounting bracket connecting the first mounting support bracket to one of the first body frame and the second body frame.

19. The fuel cell vehicle according to claim 18,

each of the plurality of rear connection members includes:

a second mounting support bracket connected to an end of the rear fuel cell; and

a second independent mounting bracket connecting the second mounting support bracket to one of the first body frame and the second body frame.

20. The fuel cell vehicle according to claim 19,

each of the plurality of common connection members includes:

a common mounting bracket connecting the first independent mounting bracket and the second independent mounting bracket adjacent to the first independent mounting bracket in the first direction to the first body frame and the second body frame.

21. The fuel cell vehicle according to claim 20,

the first independent mounting bracket is connected to an upper portion of the common mounting bracket, and

the second independent mounting bracket is connected to a lower portion of the common mounting bracket.

Technical Field

Embodiments relate to a vehicle including a fuel cell.

Background

Since commercial vehicles such as trucks and buses are heavier and larger than passenger vehicles, a relatively large amount of output, for example, about 200kW or more, is required in order to drive the commercial vehicles. Therefore, it may not be feasible or difficult to drive a commercial vehicle using only the type of fuel cell used in passenger vehicles. Therefore, this is being actively studied.

Disclosure of Invention

Accordingly, embodiments provide a fuel cell vehicle that may substantially obviate one or more problems due to limitations and disadvantages of the related art.

Embodiments provide a fuel cell vehicle in which a plurality of fuel cells are efficiently mounted.

In one embodiment, a fuel cell vehicle may include: a front fuel cell installed in the first space; and a rear fuel cell mounted in a second space located on a rear side of the first space based on a direction in which the fuel cell vehicle travels. The rear fuel cell includes a top surface that is lower than a top surface of the front fuel cell based on ground.

For example, the fuel cell vehicle may further include: the first and second body frames extending in a first direction in which the fuel cell vehicle travels and disposed to be opposite to each other in a second direction intersecting the first direction, and a space between the first and second body frames spaced apart from each other in the second direction may include a first space and a second space.

For example, the fuel cell vehicle may further include: a cab; and a loading part located at a rear side of the cab, and each of the cab and the loading part may be supported by the first body frame and the second body frame.

For example, the fuel cell vehicle may further include: and a hydrogen storage device located between the cab and the loading portion in the first direction.

For example, the front fuel cell may be mounted below the cab.

For example, a top surface of the front fuel cell may be located between a top surface of each of the first and second body frames and a bottom surface of the cab.

For example, the post fuel cell may be installed below the loading part.

For example, the top surface of the rear fuel cell may be lower than the bottom surface of the loading part based on the ground.

For example, the post fuel cell may be mounted below the hydrogen storage device.

For example, the top surface of the post fuel cell may be lower than the bottom surface of the hydrogen storage device based on the ground.

For example, the fuel cell vehicle may further include: a front axle, and a front fuel cell may be mounted between the cab and the front axle.

For example, the top surface of the rear fuel cell may be lower than the top surface of the front fuel cell based on ground.

For example, a height difference between the top surface of the front fuel cell and the top surface of the rear fuel cell may be greater than a height difference between the top surface of the rear fuel cell and the bottom surface of the loading part.

For example, the height difference between the top surface of the front fuel cell and the top surface of the rear fuel cell may be greater than the height difference between the top surface of the rear fuel cell and the bottom surface of the hydrogen storage device.

For example, the separation distance between the first body frame and the second body frame in the second direction may gradually decrease from the front of the fuel cell vehicle to the rear of the fuel cell vehicle, based on the direction in which the fuel cell vehicle travels.

For example, the width of the front fuel cell in the second direction may be greater than the width of the rear fuel cell in the second direction, and the width of the rear fuel cell in the second direction may be less than the minimum separation distance between the first body frame and the second body frame in the second direction.

For example, the fuel cell vehicle may further include: a plurality of front connection members configured to connect the front fuel cell to the first body frame and the second body frame; and a plurality of rear connection members configured to connect the rear fuel cell to the first body frame and the second body frame.

For example, the fuel cell vehicle may further include: a plurality of common connecting members configured to connect some of the plurality of front connecting members and some of the plurality of rear connecting members to the first body frame and the second body frame.

For example, a plurality of front connection members and a plurality of common connection members may connect the front fuel cell to the first body frame and the second body frame such that the front fuel cell may be mounted and dismounted above the first body frame and the second body frame.

For example, a plurality of front connection members may be provided in an area exposed after the cab is tilted.

For example, the plurality of rear connection members and the plurality of common connection members may connect the rear fuel cell to the first body frame and the second body frame such that the rear fuel cell may be mounted above or below the first body frame and the second body frame and may be detached below the first body frame and the second body frame.

For example, each of the plurality of front connection members may include: a first mounting support bracket connected to an end of the front fuel cell; and a first independent mounting bracket configured to connect the first mounting support bracket to one of the first body frame and the second body frame.

For example, each of the plurality of front connection members may further include: and a first mounting insulator disposed between the first mounting support bracket and the first independent mounting bracket in a third direction intersecting the first direction and the second direction and having vibration isolating properties.

For example, each of the plurality of rear connection members may include: a second mounting support bracket connected to an end of the rear fuel cell; and a second independent mounting bracket configured to connect the second mounting support bracket to one of the first body frame and the second body frame.

For example, each of the plurality of rear connection members may further include: and a second mounting insulator disposed between the second mounting support bracket and the second independent mounting bracket in the third direction and having vibration isolating properties.

For example, each of the plurality of common connection members may include: a common mounting bracket configured to connect a first independent mounting bracket and a second independent mounting bracket adjacent to the first independent mounting bracket in a first direction to the first body frame and the second body frame.

For example, a first independent mounting bracket may be connected to an upper portion of the common mounting bracket and a second independent mounting bracket may be connected to a lower portion of the common mounting bracket.

For example, the front fuel cell may include a first cell stack configured such that a plurality of unit cells are stacked in a first direction, and the rear fuel cell may include a second cell stack configured such that a plurality of unit cells are stacked in the first direction.

For example, the number of unit cells included in the first cell stack and the number of unit cells included in the second cell stack may be identical to each other.

For example, the number of unit cells included in the first cell stack and the number of unit cells included in the second cell stack may be different from each other.

Drawings

Arrangements and embodiments may be described in detail with reference to the following drawings, wherein like reference numerals refer to like elements, and wherein:

fig. 1 is a perspective view showing an external appearance of a fuel cell vehicle according to an embodiment;

fig. 2 is a plan view of the fuel cell vehicle shown in fig. 1;

fig. 3A and 3B are sectional views of a fuel cell vehicle according to an embodiment;

fig. 4 is an exemplary sectional view of each of a front fuel cell and a rear fuel cell included in a fuel cell vehicle according to an embodiment;

fig. 5 is a plan view of a fuel cell vehicle according to the embodiment;

FIG. 6 is a partial side cross-sectional view of the example of the fuel cell vehicle shown in FIG. 5;

fig. 7 is a plan view of an example of the portion a shown in fig. 5; and

fig. 8 is a perspective view of an example of the rear connecting member shown in fig. 7.

Detailed Description

The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which various embodiments are shown. Examples may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It will be understood that when an element is referred to as being "on" or "under" another element, it can be directly on/under the other element or one or more intervening elements may also be present.

When an element is referred to as being "on" or "under," it can be based on the element being "under" and "on.

Furthermore, relational terms such as "first," "second," "upper/above," and "lower/below" are used solely to distinguish one subject or element from another subject or element without necessarily requiring or relating to any physical or logical relationship or order between the subject or elements.

Hereinafter, a fuel cell vehicle 300(300A or 300B) according to an embodiment will be described with reference to the drawings. For convenience of description, the fuel cell vehicle 300(300A or 300B) will be described using a cartesian coordinate system (x-axis, y-axis, and z-axis). However, other different coordinate systems may be used. In the drawings, the x-axis, y-axis and z-axis of a cartesian coordinate system are perpendicular to each other. However, the present disclosure is not limited thereto. That is, the x-axis, y-axis, and z-axis may intersect each other. In the following description, the term "first direction" refers to at least one of a + x-axis direction and a-x-axis direction, the term "second direction" refers to at least one of a + y-axis direction and a-y-axis direction, and the term "third direction" refers to at least one of a + z-axis direction and a-z-axis direction. The term "downward direction (or lower side)" may refer to a direction of gravity toward the ground, and the term "upward direction (or upper side)" may refer to a direction away from the ground, i.e., a direction opposite to the direction indicated by the term "downward direction". The term "forward direction (or front side)" may refer to a direction in which the vehicle 300(300A or 300B) moves forward, and the term "rearward direction (or rear side)" may refer to a direction in which the vehicle 300(300A or 300B) moves rearward, that is, a direction opposite to the direction indicated by the term "forward direction".

Hereinafter, a fuel cell vehicle (hereinafter referred to as "vehicle") 300(300A or 300B) according to an embodiment will be described with reference to the drawings.

Fig. 1 is a perspective view showing an external appearance of a fuel cell vehicle 300 according to an embodiment, fig. 2 is a plan view of the fuel cell vehicle 300 shown in fig. 1, and fig. 3A and 3B are sectional views of the fuel cell vehicles 300A and 300B, respectively, according to the embodiment.

To facilitate understanding of the vehicle body 320, the fuel cell vehicle 300 shown in fig. 1 and 2 omits illustration of the front fuel cell (or forward fuel cell) 332 and the rear fuel cell (or rearward fuel cell) 334.

Referring to fig. 1 to 3B, a fuel cell vehicle 300(300A or 300B) according to an embodiment may include a vehicle body 320 and a plurality of fuel cells. For example, the plurality of fuel cells may include a front fuel cell 332 and a rear fuel cell 334. Although the plurality of fuel cells are described below as including the front fuel cell 332 and the rear fuel cell 334, the following description may also be applied to a configuration in which three or more fuel cells are provided.

First, referring to fig. 4, an example of each of the front fuel cell 332 and the rear fuel cell 334 included in the vehicle 300(300A or 300B) according to the embodiment will be described. However, the vehicle 300(300A or 300B) according to the embodiment may include the front fuel cell 332 and the rear fuel cell 334 having any one of various configurations different from the configuration shown in fig. 4.

Fig. 4 is an exemplary sectional view of each of the front fuel cell 332 and the rear fuel cell 334 included in the fuel cell vehicle 300(300A or 300B) according to the embodiment. The term "fuel cell" referred to herein with reference to fig. 4 may refer to each of the front fuel cell 332 and the rear fuel cell 334 according to the embodiment.

The fuel cell may be, for example, a polymer electrolyte membrane fuel cell (or proton exchange membrane fuel cell, PEMFC) that is most widely studied as a power source for driving a vehicle.

The fuel cell may include first and second end plates 110A and 110B, a current collector 112, and a cell stack 122.

The cell stack 122 may include a plurality of unit cells 122-1 to 122-N stacked in a first direction. Here, "N" is a positive integer of 1 or more, and may range from several tens to several hundreds. However, the present disclosure is not limited to any particular value of "N".

Hereinafter, the cell stack 122 included in the front fuel cell 332 is referred to as a "first cell stack", and the cell stack 122 included in the rear fuel cell 334 is referred to as a "second cell stack".

According to the embodiment, the number of unit cells included in the first cell stack and the number of unit cells included in the second cell stack may be the same as each other, or may be different from each other.

Each unit cell 122-N (where 1. ltoreq. N. ltoreq.N) may generate 0.6 to 1.0 volts, with an average of 0.7 volts. Therefore, "N" can be determined according to the intensity of the electric power supplied from the fuel cell to the load. Here, the "load" may refer to a component of the vehicle 300(300A or 300B) that requires electric power.

In particular, the vehicle 300(300A or 300B) according to the embodiment may be a commercial vehicle that requires a large amount of electric power, such as a bus, a truck, or the like. To meet the demand for a large amount of driving power, the vehicle 300(300A or 300B) may include a plurality of (e.g., two) fuel cells, for example, a front fuel cell 332 and a rear fuel cell 334.

Each unit cell 122-n may include a Membrane Electrode Assembly (MEA)210, Gas Diffusion Layers (GDLs) 222 and 224, gaskets 232, 234, and 236, and separators (or bipolar plates) 242 and 244.

The membrane electrode assembly 210 has the following structure: catalyst electrode layers that generate electrochemical reactions are attached to both sides of an electrolyte membrane through which hydrogen ions move. Specifically, the membrane electrode assembly 210 may include a polymer electrolyte membrane (or proton exchange membrane) 212, a fuel electrode (hydrogen electrode or anode) 214, and an air electrode (oxygen electrode or cathode) 216. In addition, the membrane electrode assembly 210 may further include a subgasket 238.

Polymer electrolyte membrane 212 is disposed between fuel electrode 214 and air electrode 216.

Hydrogen gas, which is a fuel in the fuel cell, may be supplied to the fuel electrode 214 through the first separator 242, and air containing oxygen gas, which is an oxidant, may be supplied to the air electrode 216 through the second separator 244.

The hydrogen gas supplied to the fuel electrode 214 is decomposed into hydrogen ions (protons, H) by the catalyst⁺) And electron (e)^-). Only hydrogen ions may be selectively transferred to the air electrode 216 through the polymer electrolyte membrane 212, and at the same time, electrons may be transferred to the air electrode 216 through the gas diffusion layers 222 and 224 and the first and second separators 242 and 244, which are conductors. To achieve the above operation, a catalyst layer may be applied to each of the fuel electrode 214 and the air electrode 216. The movement of the electrons causes the electrons to flow through the external wire, thereby generating an electric current. That is, the fuel cell can generate electricity due to an electrochemical reaction between hydrogen as a fuel and oxygen contained in air.

In the air electrode 216, the hydrogen ions supplied through the polymer electrolyte membrane 212 and the electrons transferred through the first and second separators 242 and 244 meet oxygen in the air supplied to the air electrode 216, thereby causing a reaction of generating water (hereinafter referred to as "water generation"). The generated water generated in the air electrode 216 may penetrate the polymer electrolyte membrane 212 and may be transferred to the fuel electrode 214.

The first gas diffusion layer 222 and the second gas diffusion layer 224 function to uniformly distribute hydrogen and oxygen as reaction gases and transfer generated electric energy. For this, the first gas diffusion layer 222 and the second gas diffusion layer 224 may be disposed on both sides of the membrane electrode assembly 210, respectively. The first gas diffusion layer 222 may function to diffuse and uniformly distribute hydrogen gas, which is a reaction gas, supplied through the first separator 242, and may have conductivity. The second gas diffusion layer 224 may function to diffuse and uniformly distribute air as a reaction gas supplied through the second separator 244, and may have conductivity.

The gaskets 232, 234, and 236 may function to maintain the gas tightness and clamping pressure of the stack with respect to the reaction gas and the coolant at an appropriate level, to distribute stress when the first and second separators 242 and 244 are stacked, and to independently seal the flow paths. In this way, since the air and water tightness is maintained by the gaskets 232, 234 and 236, the flatness of the surface adjacent to the stack 122 generating electricity may be ensured, so that the surface pressure may be uniformly distributed on the reaction surface of the stack 122.

The first and second separators 242 and 244 may function to move the reaction gas and the cooling medium and to separate each unit cell from other unit cells. In addition, the first and second separators 242 and 244 may function to structurally support the membrane electrode assembly 210 and the gas diffusion layers 222 and 224, and collect generated current and transfer the collected current to the current collector 112.

The first and second separators 242 and 244 may be spaced apart from each other in the first direction and may be disposed at the outer sides of the first and second gas diffusion layers 222 and 224, respectively. That is, the first separator 242 may be disposed at the left side of the first gas diffusion layer 222, and the second separator 244 may be disposed at the right side of the second gas diffusion layer 224.

The first separator 242 functions to supply hydrogen gas as a reaction gas to the fuel electrode 214 through the first gas diffusion layer 222. The second separator 244 functions to supply air as a reaction gas to the air electrode 216 through the second gas diffusion layer 224. Further, each of the first and second partitions 242 and 244 may form a passage through which a cooling medium (e.g., coolant) may flow.

Each of the first and second end plates 110A and 110B may be disposed at a corresponding one of both ends of the cell stack 122, and may support and fix the unit cells. That is, the first end plate 110A may be disposed at one end of the cell stack 122, and the second end plate 110B may be disposed at the other end of the cell stack 122.

The current collector 112 may be disposed between the cell stack 122 and the inner surfaces 110AI, 110BI of the first and second end plates 110A, 110B facing the cell stack 122. The collector 112 functions to collect electric energy generated by the flow of electrons in the cell stack 122 and supply the electric energy to a load of the vehicle 300(300A or 300B) using the fuel cell.

Referring back to fig. 1-3B, the body 320 may include a first body frame 322 and a second body frame 324. Optionally, the body 320 may further include at least one cross member (cross member) 323.

The first body frame 322 and the second body frame 324 may extend in a first direction (or a forward direction or a backward direction) in which the vehicle 300(300A or 300B) travels (or travels), and may be opposite to each other in a second direction intersecting the first direction. In this case, the at least one cross member 323 may be a portion disposed (or located) in the vehicle body 320 between the first and second body frames 322 and 324, and may be integrally formed with at least one of the first and second body frames 322 and 324. However, the vehicle 300(300A or 300B) according to the embodiment is not limited to the presence or absence of the cross member 323 and the specific position of the cross member 323.

The front fuel cell 332 may be installed in the first space S1 of the vehicle 300(300A or 300B), and the rear fuel cell 334 may be installed in the second space S2 of the vehicle 300(300A or 300B). Here, the first space S1 may be a space formed between the first body frame 322 and the second body frame 324 spaced apart from each other in the second direction in the vehicle 300(300A or 300B).

The second space S2 may be a space located at the rear side of the first space S1 among spaces formed between the first body frame 322 and the second body frame 324 spaced apart from each other in the second direction in the vehicle 300(300A or 300B).

Further, as shown in fig. 3A, the vehicle 300(300A) may include a cabin (or cabin) 310, a loading part 362, and a hydrogen storage device 350. Alternatively, as shown in fig. 3B, the vehicle 300(300B) may include a cab 310 and a loading portion 364. The hydrogen storage device 350 may be omitted or may be installed at a location different from that shown in fig. 3A.

The loading portion 362 or 364 may be located at the rear side of the cab 310 in the vehicle 300(300A or 300B).

In the case where the vehicle 300(300A or 300B) is a commercial vehicle as a truck, the loading part 362 or 364 may provide a space where goods are loaded, and in the case where the vehicle 300(300A or 300B) is a bus, the loading part 362 or 364 may provide a space where passengers ride.

Referring to fig. 3A and 3B, the loading parts 362 and 364 are illustrated as a closed type having a rectangular section, but the present disclosure is not limited thereto. That is, according to another embodiment, unlike the configuration shown in fig. 3A and 3B, the loading parts 362 and 364 may have an open-type section having an open upper part.

The hydrogen storage device 350 may be located between the cab 310 and the loading part 362 in the first direction, and may store hydrogen required by the front fuel cell 332 and the rear fuel cell 334 as fuel of the vehicle 300(300A or 300B). Although not shown, the vehicle 300A shown in fig. 3A may further include pipes for supplying hydrogen gas from the hydrogen storage device 350 to the front fuel cell 332 and the rear fuel cell 334, respectively.

The cab 310 and the loading part 362 or 364 may be supported by the first body frame 322 and the second body frame 324. Hydrogen storage device 350 may also be supported by first body frame 322 and second body frame 324.

Further, the cross member 323 may be used to support at least one of the cabin 310, the loading part 362 or 364, and the hydrogen storage device 350. Alternatively, the cross member 323 may not support the cabin 310, the loading part 362 or 364, and the hydrogen storage device 350, or the cross member 323 may be omitted.

Referring back to fig. 2, the first space S1 of the fuel cell 332 before installation may be formed at the lower end of the cab 310 (or below the cab). The front fuel cell 332 is hidden by the cab 310 when viewed in plan view and is therefore not visible. However, in order to facilitate understanding of the embodiment, the first space S1 and the first and second body frames 322 and 324 are illustrated with a dotted line in fig. 2. The front fuel cell 332 may be installed in a first space S1 between the first body frame 322 and the second body frame 324 under the cab 310.

According to an embodiment, in the vehicle 300A shown in fig. 3A, the second space S2(S21) where the fuel cell 334 is installed (disposed, coupled, connected, positioned, or assembled) may be located below the hydrogen storage device 350. In this case, the rear fuel cell 334 may be installed in the second space S21 shown in fig. 2, wherein the second space S21 is located between the first body frame 322 and the second body frame 324 in the space below the hydrogen storage device 350.

According to another embodiment, in the vehicle 300B shown in fig. 3B, the second space S2(S22) of the installed fuel cell 334 may be located below the loading portion 364. In this case, the rear fuel cell 334 may be mounted at any position in the second space S22 between the first body frame 322 and the second body frame 324 below the loading portion 364. For example, the post fuel cell 334 may be installed in a space S21 adjacent to the first space S1 in the second space S2.

In this case, in the vehicle 300(300A or 300B), the second space in which the rear fuel cell 334 is installed (disposed, coupled, connected, positioned, or assembled) may be determined within a range in which the rear fuel cell 334 does not interfere with components (e.g., the cross member 323, the motor, and the like) installed on the rear side of the rear fuel cell 334.

The front fuel cell 332 and the rear fuel cell 334 may be located at various positions with respect to the ground G, the bottom surface 350B of the hydrogen storage device 350, the top surfaces 320T of the first body frame 322 and the second body frame 324, the bottom surface 364B of the loading portion 364, and the bottom surface 310L of the cab 310.

Hereinafter, respective positions where the front fuel cell 332 and the rear fuel cell 334 are mounted in the vehicle 300(300A or 300B) according to the embodiment will be described with reference to the drawings.

In the vehicle 300(300A or 300B) according to the embodiment, the top surface 334T of the rear fuel cell 334 may be lower than the top surface 332T of the front fuel cell 332 based on the ground G. That is, a first height H1 at which the top surface 334T of the rear fuel cell 334 is spaced from the ground G may be less than a second height H2 at which the top surface 332T of the front fuel cell 332 is spaced from the ground G.

Further, when viewed in cross section, the top surface 332T of the front fuel cell 332 may be located between the top surface 320T of each of the first and second body frames 322, 324 and the bottom surface 310L of the cab 310. That is, when viewed in cross section, the top surface 332T of the front fuel cell 332 may be located in the space DS1 between the top surface 320T of each of the first and second body frames 322, 324 and the bottom surface 310L of the cab 310.

In addition, the vehicle 300(300A or 300B) may further include a front axle 340. In this case, the front fuel cell 332 may be installed between the cab 310 and the front axle 340.

According to an embodiment, as shown in fig. 3A, based on ground G, a top surface 334T of the post fuel cell 334 may be lower than a bottom surface 350B of the hydrogen storage device 350. That is, the first height H1 at which the top surface 334T of the post fuel cell 334 is spaced apart from the ground G may be less than the third height H31 (hereinafter referred to as "third-first height") at which the bottom surface 350B of the hydrogen storage device 350 is spaced apart from the ground G. In this case, the height difference DS2 between the first height H1 and the third-first height H31 may be greater than or equal to 0. The more the height difference DS2 is reduced when viewed in cross section, the more the length of the space in the hydrogen storage device 350 in the third direction in which hydrogen gas is stored can be increased.

Further, the difference in height DS3 between the top surface 332T of the front fuel cell 332 and the top surface 334T of the rear fuel cell 334 may be greater than the difference in height DS2 between the top surface 334T of the rear fuel cell 334 and the bottom surface 350B of the hydrogen storage device 350.

According to another embodiment, as shown in fig. 3B, the top surface 334T of the rear fuel cell 334 may be lower than the bottom surface 364B of the loading part 364 based on the ground G. That is, the first height H1 at which the top surface 334T of the rear fuel cell 334 is spaced apart from the ground G may be less than the third height H32 (hereinafter, referred to as "third-second height") at which the bottom surface 364B of the loading portion 364 is spaced apart from the ground G. In this case, the height difference DS2 between the first height H1 and the third-second height H32 may be greater than or equal to 0. The more the height difference DS2 is reduced when viewed in cross section, the more the length of the space in the loading section 350 in which goods are loaded in the third direction can be increased.

Further, a height difference DS3 between the top surface 332T of the front fuel cell 332 and the top surface 334T of the rear fuel cell 334 may be greater than a height difference DS2 between the top surface 334T of the rear fuel cell 334 and the bottom surface 364B of the loading portion 364.

Fig. 5 is a plan view of a fuel cell vehicle 300(300A or 300B) according to the embodiment.

Fig. 5 corresponds to a plan view of each of the vehicle 300A shown in fig. 3A and the vehicle 300B shown in fig. 3B. To facilitate understanding of the structure in which each of the front fuel cell 332 and the rear fuel cell 334 is connected to the first body frame 322 and the second body frame 324, illustration of the cabin 310, the loading portion 362 or 364, and the hydrogen storage device 350 mounted (provided, coupled, connected, positioned, or assembled) on the first body frame 322 and the second body frame 324 is omitted in fig. 5.

Referring to fig. 5, the spaced distance between the first body frame 322 and the second body frame 324 in the second direction may gradually decrease from the front of the vehicle 300(300A or 300B) to the rear of the vehicle 300(300A or 300B). The separation distance between the first body frame 322 and the second body frame 324 in the second direction may be the largest at the front end of the vehicle 300(300A or 300B), and may be the smallest at the rear end of the vehicle 300(300A or 300B). That is, the spaced distance between the first body frame 322 and the second body frame 324 in the second direction may have a maximum value YMA at the front end of the vehicle 300(300A or 300B), and the spaced distance between the first body frame 322 and the second body frame 324 in the second direction may have a minimum value YMI at the rear end of the vehicle 300(300A or 300B).

When viewed in plan, as described above, in the case where the spaced distance between the first body frame 322 and the second body frame 324 in the second direction gradually decreases from the front of the vehicle 300(300A or 300B) to the rear of the vehicle 300(300A or 300B), the width YF of the front fuel cell 332 in the second direction may be larger than the width YB of the rear fuel cell 334 in the second direction. Alternatively, the width YF and the width YB may be the same as each other. The width YB of the rear fuel cell 334 in the second direction may be less than the minimum separation distance YMI between the first body frame 322 and the second body frame 324 in the second direction. With this structure, even when the minimum separation distance YMI in the second direction between the first and second body frames 322 and 324 is small, the front and rear fuel cells 332 and 334 are mounted in the first and second spaces S1 and S21 or S22 between the first and second body frames 322 and 324, respectively.

The vehicle 300(300A or 300B) according to the embodiment may further include a plurality of front connection members FC (e.g., FC1 to FC4) and a plurality of rear connection members BC (e.g., BC1 to BC 4). Optionally, the vehicle 300(300A or 300B) according to the embodiment may further include a plurality of common connection members CC.

The front connection member FC functions to connect (couple, assemble, set or place) the front fuel cell 332 to the first body frame 322 and the second body frame 324. For example, the front connection members FC may include first to fourth front connection members FC1 to FC4 between the front fuel cell 332 and the first and second body frames 322 and 324. However, the present disclosure is not limited to a specific number of the front connection members FC.

The rear connection member BC functions to connect (couple, assemble, set or place) the rear fuel cell 334 to the first body frame 322 and the second body frame 324. For example, the rear connection member BC may include first to fourth rear connection members BC1 to BC4 between the rear fuel cell 334 and the first and second body frames 322 and 324. However, the present disclosure is not limited to a specific number of rear connection members BC.

Although each of the front fuel cell 332 and the rear fuel cell 334 is shown in fig. 5 to have a rectangular plane, the present disclosure is not limited thereto. Hereinafter, as shown in fig. 5, each of the front fuel cell 332 and the rear fuel cell 334 will be described as having a rectangular plane. However, the following description may also be applied to the case where each of the front fuel cell 332 and the rear fuel cell 334 has a polygonal plane, a circular plane, or an elliptical plane.

The front fuel cell 332 may include four sides, i.e., first to fourth sides FS1, FS2, FS3, and FS 4.

According to an embodiment, as shown in fig. 5, each of the second front connection member FC2 and the third front connection member FC3 may be disposed between the first side FS1 of the front fuel cell 332 and the first body frame 322, and may connect the front fuel cell 332 to the first body frame 322. Each of the first front connection member FC1 and the fourth front connection member FC4 may be disposed between the third side FS3 of the front fuel cell 332 and the second body frame 324, and may connect the front fuel cell 332 to the second body frame 324.

According to another embodiment, unlike the configuration shown in fig. 5, each of the second front connection member FC2 and the third front connection member FC3 may connect at least one of the second side FS2, the fourth side FS4, the angle between the first side FS1 and the second side FS2, and the angle between the first side FS1 and the fourth side FS4 of the front fuel cell 332 to the first body frame 322. Further, unlike the configuration shown in fig. 5, each of the first and fourth front connection members FC1 and FC4 may connect at least one of the second side FS2, the fourth side FS4, the angle between the second side FS2 and the third side FS3, and the angle between the third side FS3 and the fourth side FS4 of the front fuel cell 332 to the second body frame 324.

The rear fuel cell 334 may include four sides, i.e., first to fourth sides BS1, BS2, BS3, and BS 4.

According to an embodiment, as shown in fig. 5, each of the second rear connecting member BC2 and the third rear connecting member BC3 may be disposed between the first side BS1 of the rear fuel cell 334 and the first body frame 322, and may connect the rear fuel cell 334 to the first body frame 322. Each of the first rear connecting member BC1 and the fourth rear connecting member BC4 may be disposed between the third side BS3 of the rear fuel cell 334 and the second body frame 324, and may connect the rear fuel cell 334 to the second body frame 324.

According to another embodiment, unlike the configuration shown in fig. 5, each of the second rear connection member BC2 and the third rear connection member BC3 may connect at least one of the second side BS2, the fourth side BS4, the angle between the first side BS1 and the second side BS2, and the angle between the first side BS1 and the fourth side BS4 of the rear fuel cell 334 to the first body frame 322. Further, unlike the configuration shown in fig. 5, each of the first rear connection member BC1 and the fourth rear connection member BC4 may connect at least one of the angle between the second side BS2, the fourth side BS4, the second side BS2, and the third side BS3, and the angle between the third side BS3 and the fourth side BS4 of the rear fuel cell 334 to the second body frame 324.

The plurality of common connecting members CC function to connect (join, assemble, set or place) some of the front connecting members FC and some of the rear connecting members BC to the first body frame 322 and the second body frame 324. For example, the common connection member CC may include a first common connection member CC1 and a second common connection member CC2, but the present disclosure is not limited to a specific number of common connection members CC.

Each of the plurality of common connecting members CC functions to connect a corresponding one of the front connecting members and a corresponding one of the rear connecting members adjacent to each other in the first direction to a corresponding one of the first body frame 322 and the second body frame 324. Specifically, the third front connection member FC3 of the front connection members FC and the third rear connection member BC3 of the rear connection members BC are adjacent to each other in the first direction. Further, the fourth front connection member FC4 of the front connection members FC and the fourth rear connection member BC4 of the rear connection members BC are adjacent to each other in the first direction. The first common connecting member CC1 functions to connect the third front connecting member FC3 and the third rear connecting member BC3 to the first body frame 322, and the second common connecting member CC2 functions to connect the fourth front connecting member FC4 and the fourth rear connecting member BC4 to the second body frame 324.

Further, the front connection member FC and the common connection member CC may connect the front fuel cell 332 to the first body frame 322 and the second body frame 324, so that the front fuel cell 332 may be mounted (fixed, coupled, connected, or assembled) over the first body frame 322 and the second body frame 324 and may be dismounted (dismounted, or removed) over the first body frame 322 and the second body frame 324.

Hereinafter, a method of mounting the front fuel cell 332 to the vehicle 300(300A or 300B) and dismounting the front fuel cell 332 from the vehicle 300(300A or 300B) using the front connecting member FC will be described.

First, a method of mounting the front fuel cell 332 to the vehicle 300(300A or 300B) will be described.

According to the embodiment, the cab 310 is tilted in the direction indicated by the arrow AR shown in fig. 3A and 3B. Thereafter, the first to fourth front connection members FC1 to FC4 are connected to the front fuel cell 332, then the first front connection member FC1 and the second front connection member FC2 are connected to the first body frame 322 and the second body frame 324 above the first body frame 322 and the second body frame 324, and the third front connection member FC3 and the fourth front connection member FC4 are connected to the first common connection member CC1 and the second common connection member CC2, thereby completing the installation of the front fuel cell 332.

According to another embodiment, the cab 310 is tilted in the direction indicated by the arrow AR shown in fig. 3A and 3B. Thereafter, the first and second front connecting members FC1 and FC2 are connected to the first and second body frames 322 and 324 above the first and second body frames 322 and 324, and the third and fourth front connecting members FC3 and FC4 are connected to the first and second common connecting members CC1 and CC2, respectively. Thereafter, the first to fourth front connection members FC1 to FC4 are connected to the front fuel cell 332, thereby completing the installation of the front fuel cell 332.

Next, a method of detaching the front fuel cell 332 from the vehicle 300(300A or 300B) will be described.

According to the embodiment, the cab 310 is tilted in the direction indicated by the arrow AR shown in fig. 3A and 3B. Thereafter, the first and second front connecting members FC1 and FC2 are separated from the first and second body frames 322 and 324 above the first and second body frames 322 and 324, respectively, and the third and fourth front connecting members FC3 and FC4 are separated from the first and second common connecting members CC1 and CC 2. Thereafter, the separated components are withdrawn upwardly from the first body frame 322 and the second body frame 324. Thereafter, the first to fourth front connecting members FC1 to FC4 are separated from the front fuel cell 332, so that the front fuel cell 332 is detached from the vehicle 300(300A or 300B).

According to another embodiment, the cab 310 is tilted in the direction indicated by the arrow AR shown in fig. 3A and 3B. Thereafter, the first to fourth front connection members FC1 to FC4 are separated from the front fuel cell 332. Thereafter, the separated front fuel cell 332 is withdrawn upward from the first body frame 322 and the second body frame 322. Thereafter, the first front connecting member FC1 and the second front connecting member FC2 are separated from the first body frame 322 and the second body frame 324 above the first body frame 322 and the second body frame 324, respectively, and the third front connecting member FC3 and the fourth front connecting member FC4 are separated from the first common connecting member CC1 and the second common connecting member CC2, respectively, so that the front fuel cell 332 is detached from the vehicle 300(300A or 300B).

As described above, in order to attach the front fuel cell 332 to the vehicle 300(300A or 300B) or detach the front fuel cell 332 from the vehicle 300(300A or 300B), the front connection member FC may be provided in the area a1 that the cab 310 is exposed after being tilted in the direction indicated by the arrow AR shown in fig. 3A and 3B. Therefore, for example, when maintenance/repair of the vehicle 300(300A or 300B) equipped with the front fuel cell 332 is desired, the front fuel cell 332 can be easily detached above the first body frame 322 and the second body frame 324.

Further, the rear connection member BC and the common connection member CC may connect the rear fuel cell 334 to the first body frame 322 and the second body frame 324, so that the rear fuel cell 334 may be mounted above or below the first body frame 322 and the second body frame 324 and may be detached below the first body frame 322 and the second body frame 324.

Hereinafter, a method of mounting the rear fuel cell 334 to the vehicle 300(300A or 300B) or dismounting the rear fuel cell 334 from the vehicle 300(300A or 300B) using the rear connecting member BC will be described.

First, a method of initially mounting the rear fuel cell 334 to the vehicle 300(300A or 300B) will be described.

According to the embodiment, the first to fourth rear linking members BC1 to BC4 are linked to the rear fuel cell 334, then the first rear linking member BC1 and the second rear linking member BC2 are linked to the first body frame 322 and the second body frame 324 above or below the first body frame 322 and the second body frame 324, respectively, and the third rear linking member BC3 and the fourth rear linking member BC4 are linked to the first common linking member CC1 and the second common linking member CC2, respectively, thereby completing the installation of the rear fuel cell 334.

According to another embodiment, the first and second rear connecting members BC1 and BC2 are connected to the first and second body frames 322 and 324 above and below the first and second body frames 322 and 324, respectively, and the third and fourth rear connecting members BC3 and BC4 are connected to the first and second common connecting members CC1 and CC2, respectively. Thereafter, the rear fuel cell 334 is connected to the first to fourth rear connection members BC1 to BC4, thereby completing the installation of the rear fuel cell 334.

After the post fuel cell 334 is initially mounted to the vehicle 300(300A or 300B) in the above-described manner, the post fuel cell 334 may be detached from the vehicle 300(300A or 300B) according to a method described below.

According to the embodiment, the first to fourth rear connecting members BC1 to BC4 are separated from the rear fuel cell 334 below the first and second body frames 322 and 324, and the separated rear fuel cell 334 is withdrawn downward from the first and second body frames 322 and 324. Thereafter, the first and second rear connecting members BC1 and BC2 are separated from the first and second body frames 322 and 324, respectively, below the first and second body frames 322 and 324, and the third and fourth rear connecting members BC3 and BC4 are separated from the first and second common connecting members CC1 and CC2, respectively, thereby completing the disassembly of the rear fuel cell 334.

According to another embodiment, the first and second rear connecting members BC1 and BC2 are separated from the first and second body frames 322 and 324, respectively, below the first and second body frames 322 and 324, and the third and fourth rear connecting members BC3 and BC4 are separated from the first and second common connecting members CC1 and CC2, respectively. Thereafter, the first to fourth rear connection members BC1 to BC4 are separated from the rear fuel cell 334, thereby completing the disassembly of the rear fuel cell 334.

Next, a method of remounting the rear fuel cell 334 that has been detached from the vehicle 300(300A or 300B) to the vehicle 300(300A or 300B) will be described below.

According to an embodiment, the first to fourth rear connection members BC1 to BC4 are connected to the rear fuel cell 334. Thereafter, the first and second rear connecting members BC1 and BC2 are connected to the first and second body frames 322 and 324, respectively, below the first and second body frames 322 and 324, and the third and fourth rear connecting members BC3 and BC4 are connected to the first and second common connecting members CC1 and CC2, respectively, to complete the installation of the rear fuel cell 334.

According to another embodiment, first and second rear connecting members BC1 and BC2 are connected to first and second body frames 322 and 324, respectively, below first and second body frames 322 and 324, and third and fourth rear connecting members BC3 and BC4 are connected to first and second common connecting members CC1 and CC2, respectively. Thereafter, the rear fuel cell 334 is connected to the first to fourth rear connecting members BC1 to BC4 below the first body frame 322 and the second body frame 324, thereby completing the installation of the rear fuel cell 334.

As described above, according to the embodiment, after the rear fuel cell 334 has been initially mounted to the vehicle 300(300A or 300B), the rear fuel cell 334 may be detached from the vehicle 300(300A or 300B) below the first body frame 322 and the second body frame 324 and mounted again to the vehicle 300(300A or 300B) for maintenance/repair or the like. Therefore, it is not necessary to detach the hydrogen storage device 350 shown in fig. 3A and the loading portion 364 shown in fig. 3B from the vehicle 300(300A or 300B) in order to mount or dismount the rear fuel cell 334.

Further, as described above, the front fuel cell 332 may be mounted and dismounted above the first body frame 322 and the second body frame 324, and the rear fuel cell 334 may be mounted and dismounted below the first body frame 322 and the second body frame 324. That is, according to the embodiment, the direction in which the front fuel cell 332 is mounted and dismounted and the direction in which the rear fuel cell 334 is mounted and dismounted are different from each other. Therefore, it is necessary to prevent the connection state of the rear fuel cell 334 from being affected by the mounting or dismounting process of the front fuel cell 332, and it is necessary to prevent the connection state of the front fuel cell 332 from being affected by the mounting or dismounting process of the rear fuel cell 334. For this reason, the third front connecting member FC3 and the third rear connecting member BC3 disposed adjacent to each other in the first direction are not directly connected to the first body frame 322 but are indirectly connected to the first body frame 322 through the first common connecting member CC 1. Further, the fourth front connecting member FC4 and the fourth rear connecting member BC4 disposed adjacent to each other in the first direction are not directly connected to the second body frame 324 but are indirectly connected to the second body frame 324 through the second common connecting member CC 2.

Hereinafter, examples of the front connection member FC, the rear connection member BC, and the common connection member CC will be described with reference to the drawings.

Fig. 6 is a partial side sectional view of an example of the fuel cell vehicle 300(300A or 300B) shown in fig. 5.

Fig. 6 shows one of the front connection members FC, one of the rear connection members BC, and one of the common connection members CC.

As shown in fig. 6, each of the front connection members 370 of the front connection member FC according to the embodiment may include a first mounting support bracket 372 and a first separate mounting bracket 374. The first mounting support bracket 372 is part of the front connection member 370 that is connected to the end of the front fuel cell 332.

The first independent mounting bracket 374 is part of the front connecting member 370 that connects the first mounting support bracket 372 to one of the first body frame 322, the second body frame 324, the first common connecting member CC1 and the second common connecting member CC 2.

When the front connection member 370 shown in fig. 6 corresponds to the first and second front connection members FC1 and FC2 shown in fig. 5, unlike the configuration shown in fig. 6, each of the first independent mounting brackets 374 of the first and second front connection members FC1 and FC2 may not be connected to the corresponding common connection member CC (390), but may be connected to the corresponding one of the first and second body frames 322 and 324. However, when the front connection member 370 shown in fig. 6 corresponds to the third and fourth front connection members FC3 and FC4 shown in fig. 5, each of the first independent mounting brackets 374 of the third and fourth front connection members FC3 and FC4 may be connected to the corresponding common connection member CC (390), as shown in fig. 6.

In addition, each of the front connection members 370 of the front connection member FC may further include a first mounting insulator (or bushing) 376. The first mounting insulator 376 may be coupled to the front fuel cell 332 by a first mounting support bracket 372.

The first mounting insulator 376 is disposed between the first mounting support bracket 372 and the first separate mounting bracket 374 in the third direction, and has vibration isolating properties. First mounting insulator 376 may prevent or minimize the transmission of vibrations from first mounting support bracket 372 to first independent mounting bracket 374 and may prevent or minimize the transmission of vibrations from first independent mounting bracket 374 to first mounting support bracket 372.

Further, according to an embodiment, as shown in fig. 6, each of the rear connection members 380 in the rear connection member BC may include a second mounting support bracket 382 and a second independent mounting bracket 384. The second mounting support bracket 382 is part of a rear connection member 380 that is connected to an end of the rear fuel cell 334. The second independent mounting bracket 384 is part of the rear connecting member 380 that connects the second mounting support bracket 382 to one of the first body frame 322, the second body frame 324, the first common connecting member CC1 and the second common connecting member CC 2.

When the rear connection member 380 shown in fig. 6 corresponds to the first and second rear connection members BC1 and BC2 shown in fig. 5, unlike the configuration shown in fig. 6, each of the second individual mounting brackets 384 of the first and second rear connection members BC1 and BC2 may not be connected to the corresponding common connection member CC (390), but may be connected to the corresponding one of the first and second body frames 322 and 324. However, when the rear connecting member 380 shown in fig. 6 corresponds to the third rear connecting member BC3 and the fourth rear connecting member BC4 shown in fig. 5, as shown in fig. 6, each of the second individual mounting brackets 384 of the third rear connecting member BC3 and the fourth rear connecting member BC4 may be connected to the corresponding common connecting member CC (390).

In addition, each of the rear connection members 380 in the rear connection member BC may further include a second mounting insulator 386. The second mounting insulator 386 may be coupled to the rear fuel cell 334 by a second mounting support bracket 382.

The second mounting insulator 386 is disposed between the second mounting support bracket 382 and the second independent mounting bracket 384 in the third direction and has vibration isolating properties. The second mounting insulator 386 can prevent or minimize the transmission of vibrations from the second mounting support bracket 382 to the second independent mounting bracket 384 and can prevent or minimize the transmission of vibrations from the second independent mounting bracket 384 to the second mounting support bracket 382.

Further, each of the common connection members CC may include a common mounting bracket 390. The common mounting bracket 390 functions to connect the first and second independent mounting brackets 374 and 384 adjacent to each other in the first direction to the first and second body frames 322 and 324.

For example, the common mounting bracket 390 shown in fig. 6 may connect the first and second independent mounting brackets 374 and 384 of the third front and rear connecting members FC3(370) and BC3(380) adjacent to each other in the first direction to the first and second body frames 322 and 324.

Further, the common mounting bracket 390 shown in fig. 6 may connect the first and second independent mounting brackets 374 and 384 of the fourth front and rear connecting members FC4(370) and BC4(380) adjacent to each other in the first direction to the first and second body frames 322 and 324.

To this end, each of the common mounting brackets 390 of the first and second common connecting members CC1 and CC2 may be directly connected to a corresponding one of the first and second body frames 322 and 324.

Referring to fig. 6, the first individual mounting bracket 374 of the front connection member 370 may be connected to the upper (or top surface) CCU of the common mounting bracket 390, and the second individual mounting bracket 384 of the rear connection member 380 may be connected to the lower (or bottom surface) CCL of the common mounting bracket 390. As described above, this serves to allow the front connection member 370 to be mounted or dismounted above the first and second body frames 322 and 324, and the rear connection member 380 to be mounted or dismounted below the first and second body frames 322 and 324.

Fig. 7 is a plan view of an example of the portion a shown in fig. 5.

As shown in fig. 7, the second rear connecting member BC2 shown in fig. 5 may be connected to the first body frame 322. Although not shown, the first rear attachment member BC1 shown in fig. 5 may be attached to the second body frame 324 in the manner shown in fig. 7.

The second mounting support bracket 382A, the second independent mounting bracket 384A, and the second mounting insulator 386A shown in fig. 7 correspond to the second mounting support bracket 382, the second independent mounting bracket 384, and the second mounting insulator 386 shown in fig. 6, respectively.

As described above, in order to allow the rear connection member BC (380) to be mounted to the vehicle 300(300A or 300B) or dismounted from the vehicle 300(300A or 300B) below the first and second body frames 322 and 324, as shown in fig. 7, the second independent mounting bracket 384A may be connected while surrounding the first body frame 322, and may be separated from the first body frame 322 below the first body frame 322.

Further, as shown in fig. 7, the second mounting support bracket 382A may include a bent portion P. Although not shown, the first mounting support bracket 372 may also include a bent portion P in the same manner as shown in fig. 7. This is to connect the front fuel cell 332 and the rear fuel cell 334 respectively disposed in the first space S1 and the second space S2 formed between the first body frame 322 and the second body frame 324 spaced apart from each other in the second direction to the first body frame 322 and the second body frame 324 extending in the first direction. However, the present disclosure is not limited thereto. The front and rear connection members FC and BC may not include the bent portion P according to portions of the front and rear fuel cells 332 and 334 where the front and rear connection members FC and BC are provided or according to shapes of the front and rear connection members FC and BC.

Fig. 8 is a perspective view of an example of the rear connection member 380A shown in fig. 7.

Referring to fig. 8, the second independent mounting bracket 384A of the rear connecting member 380A may be coupled to the first body frame 322 by screws 394. Further, the second mounting support bracket 382A of the rear connection member 380A may be coupled to the rear fuel cell 334 by a screw 392.

Although not shown, the first mounting support bracket 372 of each of the first to fourth front connecting members FC1 to FC4 may be coupled to the front fuel cell 332 by screws, and the first individual mounting bracket 374 of each of the first to fourth front connecting members FC1 to FC4 may be coupled to the first body frame 322, the second body frame 324, or the common mounting bracket 390 by screws. Further, the second mounting support bracket 382 of each of the first, third and fourth rear connecting members BC1, BC3 and BC4 may be coupled to the rear fuel cell 334 by screws, and the second individual mounting bracket 384 of each of the first, third and fourth rear connecting members BC1, BC3 and BC4 may be coupled to the first body frame 322, the second body frame 324 or the common mounting bracket 390 by screws.

The fuel cell vehicle 300(300A or 300B) according to the embodiment may correspond to a commercial vehicle such as a truck or a bus that is heavier or larger than a passenger vehicle. Therefore, the fuel cell vehicle 300(300A or 300B) according to the embodiment uses the plurality of fuel cells 332 and 334. The fuel cell vehicle 300(300A or 300B) according to the embodiment can exhibit various effects by efficiently arranging the fuel cells 332 and 334.

In the fuel cell vehicle 300(300A or 300B) according to the embodiment, the fuel cells 332 and 334 are configured so that when the fuel cells 332 and 334 are detached from the vehicle and attached to the vehicle again for maintenance/repair, there is no need to detach other components of the vehicle 300(300A or 300B), thereby improving maintenance efficiency. In particular, in the fuel cell vehicle 300(300A or 300B) according to the embodiment, the rear fuel cell 334 may be removed or connected below the first body frame 322 and the second body frame 324 when maintenance/repair is performed. Therefore, when the rear fuel cell 334 is detached from the vehicle 300(300A or 300B) and mounted again to the vehicle 300(300A or 300B), there is no need to detach the hydrogen storage device 350 shown in fig. 3A or the loading portion 364 shown in fig. 3B from the vehicle 300(300A or 300B), thereby reducing the time and expense required for maintenance/repair of the fuel cells 332 and 334.

Further, since the height difference DS2 on the cross section shown in fig. 3A is small, the length of the space occupied by the hydrogen storage device 350 in the third direction can be increased, and thus the amount of hydrogen gas that can be loaded into the hydrogen storage device 350 as fuel for the vehicle 300(300A or 300B) can be increased. An increase in the amount of hydrogen gas loaded as fuel for the vehicle 300(300A or 300B) may increase the distance that the vehicle 300(300A or 300B) can travel.

Further, since the height difference DS2 on the cross section shown in fig. 3B is small, the length of the space occupied by the loading portion 364 in the third direction can be increased, and thus the amount of cargo that can be loaded into the loading portion 364 (or the number of passengers that can ride the vehicle when the vehicle is a bus) can be increased.

Further, in the fuel cell vehicle 300(300A or 300B) according to the embodiment, the width YF of the front fuel cell 332 in the second direction and the width YB of the rear fuel cell 334 in the second direction may be adjusted so as not to affect the arrangement of components (e.g., piping, wiring, etc.) around the front fuel cell 332 and the rear fuel cell 334.

As is apparent from the above description, the embodiments provide a fuel cell vehicle in which a plurality of fuel cells are efficiently arranged, thereby improving maintainability thereof, increasing a travel distance thereof, and increasing the amount of cargo that can be loaded therein or the number of passengers that can be seated therein.

The above-described respective embodiments may be combined with each other unless they are contrary to each other, without departing from the object of the present disclosure. Furthermore, for any element not described in detail in any of the various embodiments, reference may be made to the description of the element having the same reference numeral in another embodiment.

While the present disclosure has been particularly shown and described with reference to exemplary embodiments thereof, the embodiments are presented for purposes of illustration only and not limitation, and it will be apparent to those skilled in the art that various changes in form and detail may be made without departing from the essential characteristics of the embodiments set forth herein. For example, the respective configurations set forth in the embodiments may be modified and applied. Furthermore, such modifications and differences in application should be construed as falling within the scope of the present disclosure as defined by the appended claims.