Container holding mechanism for fuel cell vehicle

Abstract

The present invention provides a container retention mechanism for a fuel cell vehicle that minimizes damage to the fuel cell vehicle's drive mechanism during a rear-end collision. In one embodiment of the present invention, the container retention mechanism for a fuel cell vehicle, in which a drive mechanism capable of driving the rear wheels is provided on the rear wheels, comprises: a first hydrogen tank positioned rearward relative to the drive shaft of the rear wheels; a second hydrogen tank positioned forward relative to the drive shaft of the rear wheels; a third hydrogen tank positioned forward; and a retraction unit that moves the drive mechanism, which is pushed out by the first hydrogen tank during a collision, to avoid the second and third hydrogen tanks.

Description

Technical Field

[0001] The present invention relates to a fuel cell vehicle equipped with a hydrogen tank, and to a vehicle technology in which a drive unit, such as a drive shaft driving rear wheels, is arranged at the rear of the vehicle. Background Art

[0002] Automobiles are an indispensable means of transportation in modern society, with various vehicles plying the roads daily. In recent years, fuel cell vehicles (FCVs), which utilize fuel cells as a new alternative to lead-acid batteries and lithium-ion batteries and have a relatively low environmental impact, have attracted significant attention.

[0003] Such fuel cell vehicles are equipped with a motor driven by the electricity from the fuel cell and a motor drive unit housing a drive mechanism that transmits the motor's driving force to the rear wheel drive shaft. Furthermore, for example, to enhance safety awareness, there are considerations for preventing damage to the motor drive unit in the event of a rear-end collision (see Patent Documents 1 and 2).

[0004] Patent Document 1: Japanese Patent Application Laid-Open No. 2018-138396

[0005] Patent Document 2: Japanese Patent Application Laid-Open No. 2018-144509 Summary of the Invention

[0006] Not limited to the above-mentioned patent documents, it cannot be said that the existing technology adequately meets the market demand, and there are the following problems.

[0007] That is, both Patent Documents 1 and 2 mentioned above only suppress exposure of a high-voltage portion due to an impact load at the initial stage of a collision, and are based on the premise that the motor drive unit and the fuel container are in contact.

[0008] Thus, according to Patent Documents 1 and 2, exposure of high-voltage components can be avoided. However, the possibility of unacceptable damage to drive systems such as the motor drive unit that abuts the fuel tank cannot be ruled out. On the other hand, if, for example, the impact on drive systems that are important to vehicle operation is minimized after a rear-end collision, as exemplified in Patent Documents 1 and 2, this can provide greater peace of mind for passengers.

[0009] The present invention has been proposed based on the above-mentioned problem as an example, and its object is to provide a technology capable of minimizing damage to a drive mechanism (motor drive unit) in a fuel cell vehicle equipped with a plurality of hydrogen gas tanks, for example, during a rear-end collision.

[0010] In order to solve the above-mentioned problems, one embodiment of the present invention provides a container holding mechanism for a fuel cell vehicle, (1) in a fuel cell vehicle in which a drive mechanism capable of driving the rear wheel is provided on the rear wheel side, the fuel cell vehicle comprises: a first hydrogen container, which is arranged on the rear side relative to the drive shaft on the rear wheel side; a second hydrogen container, which is arranged on the front side relative to the drive shaft; a third hydrogen container, which is arranged in parallel with the second hydrogen container on the front side; and a retreat unit, which moves the drive mechanism pushed out by the first hydrogen container during a collision to avoid the second hydrogen container and the third hydrogen container.

[0011] In addition, in the container holding mechanism described in (1) above, it is preferred that (2) the first hydrogen container is arranged along the vehicle width direction, and the second hydrogen container and the third hydrogen container are arranged along a direction intersecting the first hydrogen container with a predetermined gap.

[0012] In addition, in the container holding mechanism described in (2) above, it is preferred that (3) the second hydrogen container and the third hydrogen container are respectively arranged along the vehicle length direction, and the driving mechanism pushed out by the first hydrogen container during the collision retreats to the predetermined gap.

[0013] In addition, in any one of the container holding mechanisms described in (1) to (3) above, preferably, (4) the retraction unit includes a box mounting frame supporting the drive mechanism, and a first weakened portion that is preferentially deformed during the collision is provided in the box mounting frame.

[0014] In addition, in the container holding mechanism described in (4) above, it is preferred that (5) the first weakened portion is mainly deformed during the collision, so that the driving mechanism is pushed out by the first hydrogen container, so that at least a portion of the driving mechanism is submerged under the second hydrogen container and the third hydrogen container.

[0015] In addition, in the container holding mechanism described in (4) or (5) above, it is preferred that (6) the tank mounting frame has lower rigidity than the vehicle body portion, and the first hydrogen container, the second hydrogen container and the third hydrogen container are respectively mounted on the vehicle body portion by means of the tank mounting frame.

[0016] In addition, in the container holding mechanism described in (6) above, it is preferred that (7) the box mounting frame also has a drive motor support portion for supporting a drive motor connected to the drive mechanism, and at least a portion of the drive motor support portion is provided with a second weakening portion that is preferentially deformed during the collision.

[0017] According to the present invention, damage to the drive mechanism of a fuel cell vehicle during a rear-end collision can be minimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a perspective view of the external appearance of a container holding mechanism of a fuel cell vehicle according to an embodiment.

[0019] Figure 2 This is a perspective view of the appearance of the container holding mechanism according to the embodiment as viewed from the bottom side.

[0020] Figure 3 It is a top view of the container holding mechanism according to the embodiment.

[0021] Figure 4 It is a side view of the container holding mechanism according to the embodiment.

[0022] Figure 5 It is a schematic diagram showing the state change of the container holding mechanism during a rear-end collision.

[0023] Figure 6 Schematic diagram showing the state change of the container holding mechanism before and after the collision.

[0024] Figure 7a 、 Figure 7b This is an external view of a container holding mechanism for a fuel cell vehicle according to a modified example.

[0025] Figure 8 It shows Figure 7a 、 Figure 7b Schematic diagram of the state change of the container holding mechanism before and after the collision.

[0026] (Explanation of Reference Numerals)

[0027] 10 driving mechanism

[0028] 20R, 20L drive shaft

[0029] 31, 32, 33 Hydrogen containers

[0030] 40 box mounting rack

[0031] 100, 110 container holding mechanism DETAILED DESCRIPTION

[0032] Next, a preferred embodiment for implementing the present invention will be described. In addition, in the following description, for convenience, the vehicle height direction of the fuel cell vehicle is defined as the Z direction, the vehicle length direction is defined as the X direction, and the vehicle width direction orthogonal to the above-mentioned Z direction and X direction is defined as the Y direction for description. However, of course, the present invention is not limited by the above-mentioned predetermined directions and will not unreasonably narrow the scope of the claims. In addition, with respect to structures other than those described in detail below, element technologies and structures related to known fuel cell vehicles, including the above-mentioned patent documents, can be appropriately supplemented.

[0033] [Container holding mechanism 100]

[0034] First, refer to Figures 1 to 4 The structure of a container retaining mechanism 100 installed in a fuel cell vehicle (described later) according to an embodiment will be described. The container retaining mechanism 100 of this embodiment is installed in, for example, a fuel cell vehicle (FCV). While the preferred embodiment of the present invention will be described below using an FCV as an example, the present invention is not limited to FCVs and can also be applied to vehicles equipped with high-pressure gas containers, such as liquefied natural gas.

[0035] The container holding mechanism 100 is mounted on a fuel cell vehicle. In this embodiment, the fuel cell vehicle is provided with a drive mechanism 10 on the rear wheel side, capable of driving at least the rear wheels. More specifically, in this embodiment, similar to the motor drive unit disclosed in Patent Document 1, a known fuel cell box (not shown) is positioned at the front of the vehicle, and the drive mechanism 10 is disposed at the rear of the vehicle, connecting the drive shafts 20R and 20L on the rear wheel side.

[0036] The drive mechanism 10 is composed of a known electric motor and a known transmission mechanism, such as a transmission or speed reducer, that transmits power from the electric motor. While this embodiment illustrates a rear-wheel drive vehicle in which the electric motor transmits driving force to the rear wheels, a four-wheel drive system also having a drive mechanism on the front wheels is also possible. Furthermore, the drive mechanism 10 of this embodiment is mounted on the vehicle frame using a known, general structure.

[0037] A drive motor 50 is connected to the front of the drive mechanism 10. The drive motor 50, for example, provides driving force to the drive shafts 20R and 20L and can be, for example, a known electric motor mounted on a vehicle. The drive motor 50 is secured to the tank mounting frame 40 (specifically, the rear portion 43a of the third support portion 43) via a motor support portion (such as a known suspension bracket) described later.

[0038] The drive mechanism 10 is connected to the tank mounting frame 40 (specifically, the front portion 42a of the second support portion 42) described later by bolts via a rear support portion 10A. A specific example of such a rear support portion 10A is a well-known connection mechanism such as a plurality of (two, etc.) suspension bushings arranged in the Y direction.

[0039] The fuel cell installed in the fuel cell vehicle of this embodiment is configured to receive a supply of hydrogen fuel from, for example, a hydrogen tank filled with high-pressure hydrogen. In this embodiment, the fuel cell vehicle is equipped with a first hydrogen tank 31, a second hydrogen tank 32, and a third hydrogen tank 33. Furthermore, while three hydrogen tanks are installed in this embodiment, the vehicle is not limited to this configuration and may have a greater number of hydrogen tanks.

[0040] The first hydrogen tank 31 is arranged on the rear side with respect to the drive shafts 20R and 20L on the rear wheel side. Figures 1 to 4 As shown in FIG. 1 and FIG. 2 , the first hydrogen tank 31 of this embodiment is arranged with its longitudinal direction extending along the vehicle width direction (Y direction). The structure and material of the first hydrogen tank 31 can be those of a known vehicle-mounted hydrogen tank (the same applies to the second hydrogen tank 32 and third hydrogen tank 33 described later).

[0041] The second hydrogen tank 32 is positioned forward of the aforementioned rear wheel drive shafts 20R and 20L. In other words, the second hydrogen tank 32 of this embodiment is positioned on the opposite side of the first hydrogen tank 31 relative to the rear wheel drive shafts 20R and 20L. Furthermore, as can be seen from the accompanying drawings, the second hydrogen tank 32 of this embodiment is positioned so that its longitudinal direction is perpendicular to the longitudinal direction of the first hydrogen tank 31 and extends along the vehicle length direction (X direction).

[0042] Similar to the second hydrogen tank 32, the third hydrogen tank 33 is positioned forward of the rear wheel drive shafts 20R, 20L. Specifically, the third hydrogen tank 33 of this embodiment is also positioned on the opposite side of the first hydrogen tank 31 relative to the rear wheel drive shafts 20R, 20L. Furthermore, as can be seen from the accompanying drawings, the third hydrogen tank 33 of this embodiment is positioned side by side along the vehicle length direction (X direction), with a predetermined gap (retreat space) between it and the second hydrogen tank 32, and with the longitudinal direction of the tank parallel to the longitudinal direction of the second hydrogen tank 32.

[0043] In this manner, the second hydrogen tank 32 and the third hydrogen tank 33 of this embodiment are disposed in the fuel cell vehicle with a predetermined gap therebetween, and the drive motor 50, which is disposed in front of the drive mechanism 10, is disposed within this predetermined gap. The size of this "predetermined gap" is not particularly limited as long as a portion of the drive mechanism 10 can be inserted therein, and various designs can be employed depending on the size and layout of the vehicle.

[0044] The second hydrogen tank 32 and the third hydrogen tank 33 are arranged side by side in a direction perpendicular to the first hydrogen tank 31 , but the angle is not necessarily 90 degrees, and they may be arranged in an intersecting direction (arranged side by side).

[0045] <Backoff unit>

[0046] Next, refer to Figures 1 to 4 , the retraction unit of the container holding mechanism 100 of this embodiment will be described in detail.

[0047] The retraction unit of this embodiment has a function of moving the drive mechanism 10 pushed out by the first hydrogen tank 31 to avoid the second hydrogen tank 32 and the third hydrogen tank 33 during a collision such as a rear-end collision.

[0048] More specifically, the evacuation unit of the present embodiment includes a tank mounting frame 40 that supports the first to third hydrogen gas containers 31 to 33 .

[0049] The tank mounting bracket 40 is secured to a known vehicle frame extending through the floor of the vehicle body via fixing units fx1 to fx8. The vehicle body structure is not particularly limited; various known vehicle body structures, such as a frame structure or a monocoque structure, can be employed. Specific examples of the fixing units fx1 to fx8 include known fastening techniques used in vehicles, such as bolt fastening using suspension bushings.

[0050] The tank mounting bracket 40 of this embodiment integrally supports the first, second, and third hydrogen tanks 31, 32, and 33. In other words, the tank mounting bracket 40 is composed of a first support portion 41, a second support portion 42, and a third support portion 43 that are structurally connected to one another (in this embodiment, this structure is referred to as "integrated"). The three hydrogen tanks are mounted to the vehicle body via this connected structure of the tank mounting bracket 40. Furthermore, the first, second, and third support portions 41, 42, and 43 may be formed from the same material to form the aforementioned connected structure, or they may be formed from different materials and connected by welding, for example.

[0051] Preferably, the box mounting frame 40 has relatively lower rigidity than the vehicle body portion to which the aforementioned drive mechanism 10 and the like are mounted. Furthermore, the term "relatively low rigidity" in this embodiment means that the rigidity of a portion (in this example, the first support portions 41R and 41L) that is virtually free of problems even if deformed by a rear impact is set to be lower than the rigidity of the portion to be protected from such an impact. Specific methods for achieving low rigidity include, for example, using a material with a relatively low elastic modulus, such as Young's modulus, or, when using the same material, not using a cross-sectional structure with a relatively small plate thickness or a large cross-sectional performance, such as a rib or H-shaped structure.

[0052] The first support portion 41 is interposed between the second support portion 42 and the third support portion 43 described later, and has the function of connecting the second support portion 42 and the third support portion 43. Figures 1 to 3 As shown in FIG. 1 and FIG. 2 , the first support portion 41 of the present embodiment is arranged across the rear wheel drive shafts 20R and 20L, and is composed of two bridge-shaped members 41R and 41L having upwardly (upwardly in the Z direction) convex curved portions, for example.

[0053] Thus, the first support portion 41 has a curved portion that projects upward in the Z direction, forming an arc. Therefore, it functions as a first weakened portion that deforms preferentially (primarily) during a collision. Furthermore, while the first weakened portion in this embodiment comprises the first support portion 41 having the aforementioned curved portion, this is not limited to this configuration. For example, it may also be constructed from a known structure or material with low rigidity to preferentially deform during a collision. Furthermore, as described later, in this embodiment, fracture of the first weakened portion also constitutes a form of "deformation."

[0054] The second support portion 42 has the function of supporting the first hydrogen gas tank 31 via a first arch portion 42e and a second arch portion 42f, described later. More specifically, the second support portion 42 of this embodiment is formed as a frame-shaped structure (also referred to as a frame) including a front portion 42a connected to the first support portion 41, a rear portion 42b located opposite the front portion 42a and behind the first hydrogen gas tank 31, and a pair of side portions 42c and 42d connecting the respective ends of the front portion 42a and the rear portion 42b.

[0055] The second support portion 42 includes a first arch portion 42 e and a second arch portion 42 f that are spanned between the front portion 42 a and the rear portion 42 b in an arch shape so as to press the upper portion of the first hydrogen gas container 31 .

[0056] In addition, if Figures 1 to 4 As shown in FIG. 1 and FIG. 2 , the second support portion 42 includes a third arch portion 42 g and a fourth arch portion 42 h that are arched along the bottom surface of the first hydrogen tank 31 and span between the front portion 42 a and the rear portion 42 b .

[0057] As can be seen from these drawings, the first hydrogen tank 31 of this embodiment is fixed to the second support portion 42 by being sandwiched by a restraint band consisting of upper and lower arches (the first arch 42e, the second arch 42f, the third arch 42g, and the fourth arch 42h).

[0058] As a result, the first hydrogen tank 31 can be stably held against all-directional movement and vibration during travel of the fuel cell vehicle.

[0059] The third support portion 43 has the function of supporting the second hydrogen tank 32 and the third hydrogen tank 33. More specifically, the third support portion 43 of this embodiment is formed into a U-shaped structure (also referred to as a U-shaped body) and includes a rear portion 43a connected to the first support portion 41, and arm portions 43b and 43c extending forward in the vehicle length direction from both ends of the rear portion 43a in the vehicle width direction.

[0060] Furthermore, as described above, a predetermined gap (retreat space) is formed between the second hydrogen tank 32 and the third hydrogen tank 33, into which at least a portion of the drive mechanism 10, as described later, can be inserted. Therefore, in this embodiment, the distance between the arm portions 43b and 43c is set to be greater than the sum of the outer diameters of the second hydrogen tank 32 and the third hydrogen tank 33 by at least the predetermined gap.

[0061] The third support portion 43 includes a first bridge portion 43 d and a second bridge portion 43 e that are arched and span between the arm portion 43 b and the arm portion 43 c so as to press the upper sides of the second hydrogen tank 32 and the third hydrogen tank 33 together.

[0062] In addition, if Figures 1 to 4 As shown in FIG. 1 , the third support portion 43 includes a restraining belt portion 43 f suspended from the first bridge portion 43 d along the bottom surface of the second hydrogen container 32 and sandwiching the second hydrogen container 32 , and a restraining belt portion 43 g suspended from the second bridge portion 43 e and sandwiching the second hydrogen container 32 .

[0063] Similarly, the third support portion 43 includes a restraining belt portion 43h suspended from the first bridge portion 43d along the bottom surface of the third hydrogen container 33 to sandwich the third hydrogen container 33, and a restraining belt portion 43i suspended from the second bridge portion 43e to sandwich the third hydrogen container 33.

[0064] As can be seen from these drawings, similarly to the first hydrogen tank 31 , the second and third hydrogen tanks 32 and 33 of this embodiment are sandwiched between upper and lower arched bands (constraint bands 43 f to 43 i ) and fixed to two supports.

[0065] As a result, the second hydrogen tank 32 and the third hydrogen tank 33 can be stably held against all-directional movement and vibration during travel of the fuel cell vehicle.

[0066] In this manner, the third support portion 43 of this embodiment forms the predetermined gap described above and secures the second hydrogen tank 32 and the third hydrogen tank 33. Consequently, the drive mechanism 10, which is pushed out by the first hydrogen tank 31 during a rear-end collision, can be retracted into the predetermined gap, preventing contact between the drive mechanism 10 and the hydrogen tanks.

[0067] <Status changes during rear collision>

[0068] Next, refer to Figure 5 and Figure 6, illustrating the state changes of the container retaining mechanism during a rear-end collision in this embodiment. The fuel cell vehicle of this embodiment has the potential to be unexpectedly struck from behind by another vehicle (also known as a rear-end collision). In this case, as shown in this figure, the impact force generated by the rear-end collision is also transmitted from the rear side of the vehicle to the container retaining mechanism 100.

[0069] As described above, the first weakened portion (first support portion 41) is provided on the tank mounting frame 40 of the container holding mechanism 100 of this embodiment. Figure 5 Comparing the pre- and post-collision results shows that the first weakened portion (first support portion 41) deforms (in this example, breaks) first during the aforementioned collision. Therefore, in this embodiment, the first weakened portion deforms primarily during the rear-end collision, causing the drive mechanism 10, which is pushed out by the first hydrogen tank 31, to move (retract) into the predetermined gap.

[0070] As mentioned above, the tank mounting bracket 40 of this embodiment further includes a motor support portion (e.g., a suspension bracket) that supports the drive motor 50 connected to the drive mechanism 10. Furthermore, in this embodiment, the motor support portion preferably comprises a second weakened portion that preferentially deforms (in this example, fractures) upon impact. In other words, the tank mounting bracket 40 further includes a drive motor support portion that supports the drive motor 50 connected to the drive mechanism 10, and at least a portion of the drive motor support portion may be provided with a second weakened portion that preferentially deforms upon impact.

[0071] Thus, the second weakened portion is a suspension bracket that can deform due to the impact force during the aforementioned collision. During a rear-end collision, the second weakened portion (the suspension bracket serving as the motor support) deforms (in this example, breaks), thereby pushing the drive mechanism 10 forward and enabling it to rotate in the θy direction around the rear support portion 10A (e.g., the suspension bushing) under its own weight. The optimal strength of such a fixed unit can be calculated through known analytical techniques, such as rear-end collision testing or computer simulation using AI.

[0072] This can prevent the structure of the container holding mechanism 100 other than the first weakened portion (first support portion 41) and the second weakened portion from being greatly deformed and coming into contact with other components. Figure 6 As shown, the installation position of the third hydrogen tank 33 in the vehicle length direction after the collision can also be made to be almost unchanged relative to the installation position before the collision.

[0073] At this time, as shown in this example, the length W1 of the first weakened portion (first support portion 41) in the vehicle length direction (X direction) changes to W2 after the collision. The deformation ratio (W2 / W1) before and after the collision can be set through experiments or simulations to a level that allows the first weakened portion to deform before other parts without causing unintended damage to other parts.

[0074] Modifications

[0075] Furthermore, in the above embodiment, the drive mechanism 10 disposed along the vehicle length direction is described as moving forward along the vehicle length direction during a rear-end collision. However, the arrangement and retraction method of the drive mechanism 10 are not limited to the above example.

[0076] For example, Figure 7a 、 Figure 7b As shown in FIG1 , the length direction of the drive mechanism 10 may be arranged along the vehicle width direction. Also, before and after the above-mentioned collision, the first hydrogen container 31 is pushed forward, and the first weakened portion (first support portion 41) is deformed first, thereby also pushing the drive mechanism 10 forward by the above-mentioned deformation amount. At this time, as shown in FIG1 , the length direction of the drive mechanism 10 may be arranged along the vehicle width direction. Figure 8 As shown, the length W3 of the first weakened portion (first support portion 41) in the vehicle length direction (X direction) changes to W4 after the collision. As described above, the deformation ratio (W4 / W3) before and after the collision can be determined through experiments or simulations.

[0077] According to the container holding mechanism 110 shown in the modified example described above, during the above-mentioned rear-end collision, the first weakened portion (first support portion 41) is mainly deformed, and the drive mechanism 10 is pushed forward of the vehicle by the first hydrogen container 31 via the second support portion 42. Under the action of its own weight, the drive mechanism 10 bends and rotates slightly in the θy direction starting from the rear support portion 10A. In this case, a guide can be provided on the tank mounting frame 40 so that, for example, the drive mechanism 10 is tilted downward ( Figure 7a 、 Figure 7b +X direction and -Z direction) in the middle.

[0078] In addition, the length direction of the drive mechanism 10 of the modified example is arranged along the vehicle width direction, so not only does it have the effects described in the above embodiment, but in this modified example, the predetermined gap (retreat space) between the second hydrogen tank 32 and the third hydrogen tank 33 can be made relatively narrow, and the space efficiency can also be improved.

[0079] Therefore, similar to the above-mentioned embodiment, this modification can also prevent the structure of the container holding mechanism 100 other than the first weakened portion (first support portion 41) from being significantly deformed and coming into contact with other components. Thus, even in the event of an unexpected rear-end collision, damage to the drive mechanism, which is important for driving the fuel cell vehicle, can be minimized.

[0080] While preferred embodiments and variations of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to these examples. Anyone with ordinary knowledge in the technical field to which the present invention relates will readily appreciate that further modifications to these embodiments and variations within the scope of the technical concepts set forth in the claims are within the technical scope of the present invention.

Claims

1. A container holding mechanism for a fuel cell vehicle, wherein the fuel cell vehicle is provided with a drive mechanism capable of driving the rear wheels on the rear wheel side, wherein: The container holding mechanism of the fuel cell vehicle has: a first hydrogen tank disposed rearwardly of the rear wheel drive shaft in the vehicle width direction; a second hydrogen tank disposed forwardly of the drive shaft; a third hydrogen tank disposed in parallel with the second hydrogen tank on the front side; as well as a retraction unit that moves the driving mechanism pushed out by the first hydrogen container during the collision to avoid the second hydrogen container and the third hydrogen container; The second hydrogen tank and the third hydrogen tank are arranged along the vehicle length direction intersecting with the first hydrogen tank with a predetermined gap therebetween. The driving mechanism pushed out by the first hydrogen tank during the collision retreats into the predetermined gap.

2. The container holding mechanism for a fuel cell vehicle according to claim 1, wherein: The retreat unit includes a box mounting frame supporting the driving mechanism, The tank mounting frame is provided with a first weakened portion that is preferentially deformed during the collision.

3. The container holding mechanism for a fuel cell vehicle according to claim 2, wherein: During the collision, the first weakened portion is mainly deformed, so that the driving mechanism is pushed out by the first hydrogen tank, causing at least a portion of the driving mechanism to be submerged under the second hydrogen tank and the third hydrogen tank.

4. The container holding mechanism for a fuel cell vehicle according to claim 2, wherein: The box mounting frame has lower rigidity than the vehicle body portion, The first hydrogen tank, the second hydrogen tank, and the third hydrogen tank are each mounted on the vehicle body via the tank mounting bracket.

5. The container holding mechanism for a fuel cell vehicle according to claim 3, wherein: The box mounting frame has lower rigidity than the vehicle body portion, The first hydrogen tank, the second hydrogen tank, and the third hydrogen tank are each mounted on the vehicle body via the tank mounting bracket.

6. The container holding mechanism for a fuel cell vehicle according to claim 4, wherein: The box mounting frame further includes a drive motor support portion for supporting a drive motor connected to the drive mechanism. A second weakened portion that is preferentially deformed during the collision is provided on at least a portion of the drive motor support portion.

7. The container holding mechanism for a fuel cell vehicle according to claim 5, wherein: The box mounting frame further includes a drive motor support portion for supporting a drive motor connected to the drive mechanism. A second weakened portion that is preferentially deformed during the collision is provided on at least a portion of the drive motor support portion.

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