Vehicle floor structure

Abstract

The present disclosure relates to a vehicle floor structure including a center floor panel, a tunnel extending along a longitudinal center axis of the center floor panel and having a tunnel cavity, a hydrogen tank located in the tunnel cavity of the tunnel, and a tank support frame configured to support the hydrogen tank such that the hydrogen tank is held in the tunnel cavity.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of Korean Patent Application No. 10-2020-0119042, filed on September 16, 2020, with the Korean Intellectual Property Office, which is incorporated herein by reference in its entirety. Technical Field

[0003] This disclosure relates to a vehicle floor structure. Background Technology

[0004] In recent years, with increasing awareness of the environmental crisis and the depletion of oil resources, research and development of electric vehicles as environmentally friendly vehicles has been actively pursued. Electric vehicles include plug-in hybrid electric vehicles (PHEVs), battery electric vehicles (BEVs), and fuel cell electric vehicles (FCEVs).

[0005] FCEVs include fuel cell stacks that use hydrogen to generate electricity, hydrogen tanks that store hydrogen, and battery packs that store electricity generated through regenerative braking.

[0006] In existing FCEVs, because the hydrogen tank and battery pack are located under the rear floor of the vehicle, the luggage space is narrowed, and it may be difficult or impossible to install rear seats.

[0007] Compared to internal combustion engine vehicles, FCEVs have a higher overall weight due to the hydrogen tank and battery pack. To improve body strength, rigidity, NVH performance, etc., FCEVs can have multiple reinforcing components installed in the channel sections of the body, which makes the assembly process relatively complex and increases manufacturing costs.

[0008] The information described above in this background section is intended to help understand the context of the inventive concept and may include any technical concepts that are not considered prior art known to those skilled in the art. Summary of the Invention

[0009] This disclosure relates to a vehicle floor structure. Specific embodiments relate to a vehicle floor structure in which a hydrogen tank and battery pack are mounted beneath a central floor.

[0010] The embodiments disclosed herein can solve the problems that arise in the prior art while maintaining the advantages achieved by the prior art.

[0011] Embodiments of this disclosure provide that the hydrogen tank and battery pack are mounted under the central floor of the vehicle body, thereby ensuring the vehicle floor structure of the luggage space.

[0012] According to embodiments of the present disclosure, the vehicle floor structure may include: a central floor panel; a channel extending along the longitudinal central axis of the central floor panel and having a channel cavity; a hydrogen tank located in the channel cavity; and a tank support frame configured to support the hydrogen tank such that the hydrogen tank can be held in the channel cavity.

[0013] The vehicle floor structure may further include: a pair of first lower crossbeams attached to the bottom surface of the central floor panel, symmetrical to each other with respect to the passage and adjacent to the front of the passage; a pair of second lower crossbeams attached to the bottom surface of the central floor panel, symmetrical to each other with respect to the passage and adjacent to the rear of the passage; and a pair of lower longitudinal members attached to the bottom surface of the central floor panel and respectively disposed on the two side edges of the passage.

[0014] The tank support frame may include a plurality of tank-side transverse members extending in the width direction of the hydrogen tank and a tank-side longitudinal member extending in the length direction of the hydrogen tank, and the plurality of tank-side transverse members may extend in the width direction of the channel to connect a pair of lower longitudinal members.

[0015] At least one of the plurality of tank-side transverse members may be aligned with and connected to a pair of first lower crossbeams along the width direction of the vehicle.

[0016] A pair of first lower crossbeams, a pair of second lower crossbeams, and a pair of lower longitudinal members can define a pair of cavities, and the pair of cavities can be symmetrical to each other with respect to the channel.

[0017] The vehicle floor structure may further include a battery pack, which is installed in at least one of a pair of cavities.

[0018] The battery pack can be supported by a battery support frame, so that the battery pack can be kept in the cavity.

[0019] The battery support frame may include multiple battery-side transverse members extending in the width direction of the battery pack.

[0020] At least one of the multiple battery-side transverse members may be aligned with and connected to at least one of the multiple tank-side transverse members along the width direction of the vehicle.

[0021] The battery-side transverse members and the tank-side transverse members can be connected to one of a pair of lower longitudinal members by fasteners.

[0022] The vehicle floor structure may further include a third lower crossbeam disposed in at least one of a pair of cavities, and the third lower crossbeam may extend in the width direction of the vehicle.

[0023] The battery-side transverse members and the tank-side transverse members can be aligned with and connected to the third lower crossbeam along the width direction of the vehicle.

[0024] The vehicle floor structure may further include: a battery pack, installed in one of a pair of chambers; and electronic component devices, installed in the other of the pair of chambers.

[0025] The vehicle floor structure may further include: a pair of battery packs, each installed in a pair of cavities.

[0026] The vehicle floor structure may further include: a pair of first seat crossbeams attached to the top surface of the central floor panel; and a pair of second seat crossbeams attached to the top surface of the central floor panel and located behind the pair of first seat crossbeams. The pair of first lower crossbeams may be vertically aligned with the pair of first seat crossbeams. Attached Figure Description

[0027] The above and other objects, features and advantages of the embodiments of this disclosure will become more apparent from the accompanying drawings and from the following detailed description, wherein:

[0028] Figure 1 A plan view of a vehicle floor structure according to an exemplary embodiment of the present disclosure is shown;

[0029] Figure 2 A bottom view of a vehicle floor structure according to an exemplary embodiment of the present disclosure is shown;

[0030] Figure 3 Show along Figure 2 A cross-sectional view taken from line AA;

[0031] Figure 4 yes Figure 2 An enlarged view of part B;

[0032] Figure 5 Show along Figure 4 A cross-sectional view taken from the CC line;

[0033] Figure 6 Show along Figure 4 A cross-sectional view taken from the DD line;

[0034] Figure 7 A bottom view of a vehicle floor structure according to another exemplary embodiment of the present disclosure is shown; and

[0035] Figure 8 A bottom view of a vehicle floor structure according to another exemplary embodiment of the present disclosure is shown. Detailed Implementation

[0036] In the following, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Throughout the drawings, the same reference numerals will be used to designate the same or equivalent elements. Furthermore, detailed descriptions of well-known techniques associated with this disclosure will be omitted so as not to unnecessarily obscure the spirit of the disclosure.

[0037] Terms such as first, second, A, B, (a), and (b) may be used to describe elements in the exemplary embodiments of this disclosure. These terms are used only to distinguish one element from another, and the inherent features, sequences, or order of the respective elements are not limited by these terms. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Like terms defined in a general dictionary, such terms will be interpreted as having the same meaning as in the context of the relevant art, and will not be interpreted as having an ideal or overly formal meaning, unless explicitly defined in this application as having such an ideal or overly formal meaning.

[0038] Reference Figure 1 and Figure 2 The vehicle floor structure 10 according to an exemplary embodiment of the present disclosure may include: a central floor panel 1 disposed at the bottom of the vehicle body; and a rear floor panel 2 connected to the rear of the central floor panel 1.

[0039] The central floor panel 1 and the rear floor panel 2 can be located at the bottom of the vehicle body to form the vehicle floor. A passage 4 can extend along the longitudinal central axis of the central floor panel 1. Since the passage 4 rises upwards from the central floor panel 1, it can have a passage cavity 4a. The passage cavity 4a can open towards the bottom of the vehicle, and a hydrogen tank 9 can be located within the passage cavity 4a. The hydrogen tank 9 can have a cylindrical shape extending in the longitudinal direction of the vehicle.

[0040] Reference Figures 4 to 6 Since the hydrogen tank 9 is supported by the tank support frame 20, the hydrogen tank 9 can be held in the channel cavity 4a. The tank support frame 20 may include: a plurality of tank-side transverse members 21, 22, 23 extending in the width direction of the hydrogen tank 9 and the width direction of the vehicle; and a tank-side longitudinal member 24 extending in the length direction of the hydrogen tank 9 and the length direction of the vehicle.

[0041] The plurality of tank-side transverse members 21, 22, and 23 may include: a first tank-side transverse member 21, adjacent to the front end of the hydrogen tank 9; a second tank-side transverse member 22, located behind the first tank-side transverse member 21; and a third tank-side transverse member 23, located behind the second tank-side transverse member 22. For example, the first tank-side transverse member 21, the second tank-side transverse member 22, and the third tank-side transverse member 23 may extend in a semi-circular manner to stably support the bottom surface of the hydrogen tank 9. A tank-side longitudinal member 24 may connect the first tank-side transverse member 21, the second tank-side transverse member 22, and the third tank-side transverse member 23.

[0042] A pair of side beams 3, 3a can be connected to the two side edges of the central floor panel 1 and the two side edges of the rear floor panel 2. Each of the side beams 3, 3a can extend in the length direction of the vehicle.

[0043] Multiple seat crossbeams 5, 5a, 6, and 6a can be attached to the top surface of the central floor panel 1 via fasteners, welding, or other means. Vehicle seats can be mounted on the multiple seat crossbeams 5, 5a, 6, and 6a. (See reference...) Figure 1 Multiple seat crossbeams 5, 5a, 6, 6a can be symmetrically arranged on both sides of the passage 4. For example, the multiple seat crossbeams 5, 5a, 6, 6a may include a pair of first seat crossbeams 5, 5a and a pair of second seat crossbeams 6, 6a. The pair of first seat crossbeams 5, 5a may be adjacent to the front end of the central floor panel 1, and the pair of second seat crossbeams 6, 6a may be adjacent to the rear end of the central floor panel 1. That is, the pair of second seat crossbeams 6, 6a may be located behind the pair of first seat crossbeams 5, 5a. Each of the seat crossbeams 5, 5a, 6, 6a may extend in the width direction of the vehicle, and the seat crossbeams 5, 5a, 6, 6a may be connected to two corresponding edges of the passage 4.

[0044] Reference Figure 2 and Figure 3 Multiple lower crossbeams 11, 11a, 12, 12a and a pair of lower longitudinal members 14, 14a can be attached to the bottom surface of the central floor panel 1 by fasteners, welding or the like.

[0045] The plurality of lower crossbeams 11, 11a, 12, 12a may include a pair of first lower crossbeams 11, 11a adjacent to the front of the channel 4 and a pair of second lower crossbeams 12, 12a adjacent to the rear of the channel 4.

[0046] A pair of first lower crossbeams 11, 11a may be symmetrical to each other relative to the passage 4, and each of the first lower crossbeams 11, 11a may extend in the width direction of the vehicle. The first lower crossbeams 11, 11a may extend from the corresponding edges of the passage 4 to the corresponding side beams 3, 3a, respectively. Specifically, the right first lower crossbeam 11 may extend from the right edge of the passage 4 to the right side beam 3, while the left first lower crossbeam 11a may extend from the left edge of the passage 4 to the left side beam 3a. The pair of first lower crossbeams 11, 11a may be vertically aligned with a pair of first seat crossbeams 5, 5a. (Refer to...) Figure 5 The first lower crossbeams 11 and 11a can be vertically aligned with the first seat crossbeams 5 and 5a, respectively. Specifically, the right first lower crossbeam 11 can be vertically aligned with the right first seat crossbeam 5, while the left first lower crossbeam 11a can be vertically aligned with the left first seat crossbeam 5a.

[0047] A pair of second lower crossbeams 12, 12a may be symmetrical to each other with respect to the passage 4, and each of the second lower crossbeams 12, 12a may extend in the width direction of the vehicle. The second lower crossbeams 12, 12a may extend from the corresponding edge of the passage 4 to the corresponding side beams 3, 3a, respectively. Specifically, the right second lower crossbeam 12 may extend from the right edge of the passage 4 to the right side beam 3a, while the left second lower crossbeam 12a may extend from the left edge of the passage 4 to the left side beam 3a.

[0048] A pair of lower longitudinal members 14, 14a may be respectively disposed on the two side edges of the channel 4, and the pair of lower longitudinal members 14, 14a may be symmetrical to each other with respect to the channel 4. Each of the lower longitudinal members 14, 14a may extend in the length direction of the vehicle and in the length direction of the channel 4.

[0049] A pair of first lower crossbeams 11, 11a, a pair of second lower crossbeams 12, 12a, a pair of side beams 3, 3a, and a pair of lower longitudinal members 14, 14a can define a pair of cavities 15, 15a, and these cavities 15, 15a can be symmetrically formed on the left and right sides of the channel 4. For example, the right first lower crossbeam 11, the right second lower crossbeam 12, the right side beam 3, and the right lower longitudinal member 14 can define the right cavity 15, while the left first lower crossbeam 11a, the left second lower crossbeam 12a, the left side beam 3a, and the left lower longitudinal member 14a can define the left cavity 15a.

[0050] A pair of lower longitudinal members 14, 14a can be attached to the two side edges of the channel 4, and a plurality of tank-side transverse members 21, 22, 23 can extend laterally below the channel 4 to connect the pair of lower longitudinal members 14, 14a, thereby ensuring the rigidity of the channel 4.

[0051] The battery pack 8 can be installed in either the right cavity 15 or the left cavity 15a. The battery pack 8 can have a pair of mounting flanges 81, 82 facing each other, and the pair of mounting flanges 81, 82 can be respectively disposed on the two side edges of the battery pack 8. For example, as... Figures 2 to 4 As shown, the battery pack 8 can be installed in the right cavity 15, and the battery pack 8 can have a mounting flange 81 connected to the right side beam 3 and a mounting flange 82 connected to the lower right longitudinal member 14. The top of the battery pack 8 can be accommodated in the right cavity 15, and the battery pack 8 can be supported by the battery support frame 30, so that the battery pack 8 can be held in the right cavity 15.

[0052] The battery support frame 30 may include a plurality of battery-side lateral members 31, 32, and 33 extending in the width direction of the battery pack 8 and the width direction of the vehicle. The plurality of battery-side lateral members 31, 32, and 33 may include: a first battery-side lateral member 31 adjacent to the front end of the battery pack 8; a second battery-side lateral member 32 located behind the first battery-side lateral member 31; and a third battery-side lateral member 33 located behind the second battery-side lateral member 32.

[0053] Reference Figure 4 The first battery-side transverse member 31 may have a pair of flanges 71 and 72 at its two ends. Specifically, the first battery-side transverse member 31 may have a flange 71 connected to the right side beam 3 and a flange 72 connected to the lower right longitudinal member 14. The flange 71 of the first battery-side transverse member 31 and the mounting flange 81 of the battery pack 8 may be connected to the right side beam 3 by fasteners, welding, etc., and the flange 72 of the first battery-side transverse member 31 and the mounting flange 82 of the battery pack 8 may be connected to the lower right longitudinal member 14 by fasteners, welding, etc.

[0054] Reference Figure 4 The second battery-side transverse member 32 may have a pair of flanges 73 and 74 at its two ends. Specifically, the second battery-side transverse member 32 may have a flange 73 connected to the right side beam 3 and a flange 74 connected to the lower right longitudinal member 14. The flange 73 of the second battery-side transverse member 32 and the mounting flange 81 of the battery pack 8 can be connected to the right side beam 3 by fasteners, welding, etc., and the flange 74 of the second battery-side transverse member 32 and the mounting flange 82 of the battery pack 8 can be connected to the lower right longitudinal member 14 by fasteners, welding, etc.

[0055] Reference Figure 4 and Figure 6The third battery-side transverse member 33 may have a pair of flanges 75 and 76 at its two ends. Specifically, the third battery-side transverse member 33 may have a flange 75 connected to the right side beam 3 and a flange 76 connected to the lower right longitudinal member 14. The flange 75 of the third battery-side transverse member 33 and the mounting flange 81 of the battery pack 8 may be connected to the right side beam 3 by fasteners 28, and the flange 76 of the third battery-side transverse member 33 and the mounting flange 82 of the battery pack 8 may be connected to the lower right longitudinal member 14 by fasteners 27.

[0056] At least one tank-side transverse member 21 in the tank support frame 20 may be aligned with and connected to at least one pair of lower crossbeams 11, 11a in the width direction of the vehicle, and at least one tank-side transverse member 23 in the tank support frame 20 may be aligned with and connected to at least one battery-side transverse member 33 in the battery support frame 30.

[0057] Reference Figure 4 and Figure 5 The first tank-side transverse member 21 can be aligned with the first lower crossbeams 11 and 11a. The first tank-side transverse member 21 can have a pair of flanges 61 and 61a at each end. Specifically, the first tank-side transverse member 21 can have a right flange 61 extending toward the right side beam 3 and a left flange 61a extending toward the left side beam 3a. The first lower crossbeams 11 and 11a can have a pair of flanges 51 and 51a at each end. Specifically, the first lower crossbeams 11 and 11a can have a pair of flanges 51 and 51a that overlap with the pair of flanges 61 and 61a of the first tank-side transverse member 21. Specifically, the right first lower crossbeam 11 can have a flange 51 that overlaps with the right flange 61 of the first tank-side transverse member 21, and the left first lower crossbeam 11a can have a flange 51a that overlaps with the left flange 61a of the first tank-side transverse member 21. The flanges 61 and 61a of the first tank-side transverse member 21 can be connected to the flanges 51 and 51a of the first lower crossbeams 11 and 11a respectively via fasteners 25 and 25a. Specifically, the right flange 61 of the first tank-side transverse member 21 can be connected to the flange 51 of the right first lower crossbeam 11 via the right fastener 25, and the left flange 61a of the first tank-side transverse member 21 can be connected to the flange 51a of the left first lower crossbeam 11a via the left fastener 25a.

[0058] Reference Figure 4The second tank-side transverse member 22 may have a pair of flanges 62, 62a at each of its two ends. Specifically, the second tank-side transverse member 22 may have a pair of flanges 62, 62a that are respectively connected to a pair of lower longitudinal members 14, 14a. Specifically, the second tank-side transverse member 22 may have a right flange 62 extending toward the right side beam 3 and a left flange 62a extending toward the left side beam 3a. The flanges 62, 62a of the second tank-side transverse member 22 may be connected to the corresponding lower longitudinal members 14, 14a by fasteners 26, 26a. Specifically, the right flange 62 of the second tank-side transverse member 22 may be connected to the lower right longitudinal member 14 by the right fastener 26 together with the left mounting flange 82 of the battery pack 8, and the left flange 62a of the second tank-side transverse member 22 may be connected to the lower left longitudinal member 14a by the left fastener 26a.

[0059] Reference Figure 4 and Figure 6 The third tank-side transverse member 23 may have a pair of flanges 63, 63a respectively connected to a pair of lower longitudinal members 14, 14a. Specifically, the third tank-side transverse member 23 may have a right flange 63 extending toward the right side beam 3 and a left flange 63a extending toward the left side beam 3a. The flanges 63, 63a of the third tank-side transverse member 23 may be connected to the corresponding lower longitudinal members 14, 14a respectively by fasteners 27, 27a. Specifically, the right flange 63 of the third tank-side transverse member 23, the left mounting flange 82 of the battery pack 8, and the left flange 76 of the third battery-side transverse member 33 may be connected to the lower right longitudinal member 14 by the right fastener 27, thereby increasing the mounting stiffness of the third tank-side transverse member 23, the battery pack 8, and the third battery-side transverse member 33, while the left flange 63a of the third tank-side transverse member 23 may be connected to the lower left longitudinal member 14a by the left fastener 27a.

[0060] Since the first tank-side transverse member 21 is aligned with and connected to the first lower crossbeams 11, 11a, and the third tank-side transverse member 23 is aligned with and connected to the third battery-side transverse member 33, the tank support frame 20 and the battery support frame 30 can be connected to the lower crossbeams 11, 11a, 12, 12a. Therefore, the load generated in a side impact / collision of the vehicle can be evenly distributed and transmitted in the width direction of the vehicle.

[0061] According to an exemplary embodiment of the present disclosure, the third lower crossbeam 13 may be attached to at least one of a pair of cavities 15, 15a, and the third lower crossbeam 13 may extend in the width direction of the vehicle.

[0062] According to a specific exemplary embodiment, the battery pack 8 may be installed in one of the pairs of cavities 15, 15a, and electronic components 7, such as a fuel cell controller and a bidirectional high-voltage DC-DC converter (BHDC), may be installed in the other cavity 15a of the pair of cavities 15, 15a. (Refer to...) Figure 7 The battery pack 8 can be installed in the right cavity 15, while the electronic component device 7 can be installed in the left cavity 15a. Since the electronic component device 7 is smaller in weight and size than the battery pack 8, the third lower crossbeam 13 can be attached to the left cavity 15a to maintain balance between the left and right sides of the channel 4, and the third lower crossbeam 13 can extend from the left longitudinal member 14a to the left beam 3a.

[0063] The electronic component device 7 can be supported by the device-side support frame 40, thereby holding the electronic component device 7 in the left cavity 15a. The device-side support frame 40 may include a plurality of device-side transverse members 41, 42 extending in the width direction of the vehicle and a plurality of device-side longitudinal members 43, 44 extending in the length direction of the vehicle. Specifically, the plurality of device-side transverse members 41, 42 may include a first device-side transverse member 41 extending in the width direction of the vehicle and a second device-side transverse member 42 located behind the first device-side transverse member 41. The plurality of device-side longitudinal members 43, 44 may include a first device-side longitudinal member 43 adjacent to the lower left longitudinal member 14a and a second device-side longitudinal member 44 adjacent to the left side beam 3a. The first device-side longitudinal member 43 and the second device-side longitudinal member 44 can connect the first device-side transverse member 41 to the third lower crossbeam 13, and the second device-side transverse member 42 can connect the first device-side longitudinal member 43 to the second device-side longitudinal member 44.

[0064] At least one device-side transverse member 41 in the device-side support frame 40 can be aligned with and connected to at least one tank-side transverse member 22 in the tank support frame 20. Specifically, the right end of the first device-side transverse member 41 can be connected to the left flange 62a and the lower left longitudinal member 14a of the second tank-side transverse member 22 by fastener 26a.

[0065] The device side support frame 40 can be connected to the tank support frame 20 and the third lower crossbeam 13, so that the load generated in the side impact / collision of the vehicle can be evenly distributed and transferred in the width direction of the vehicle.

[0066] Reference Figure 8 The two battery packs 8 and 8a can be installed in the right cavity 15 and the left cavity 15a respectively.

[0067] Similar to Figure 4 As shown in the structure, the right battery pack 8 can be supported by the right battery support frame 30, thereby holding the right battery pack 8 within the right cavity 15. Since the construction of the right battery pack 8 and the right battery support frame 30 supporting the right battery pack 8 is similar to that described above... Figure 4 Since the construction is the same, a detailed description of the construction of the right battery pack 8 and the right battery support frame 30 supporting the right battery pack 8 will be omitted.

[0068] The left battery pack 8a can be supported by the left battery support frame 30a, so that the left battery pack 8a can be held in the left cavity 15a. The left battery pack 8a may have a mounting flange 81a connected to the lower left longitudinal member 14a and a mounting flange 82a connected to the left side beam 3a.

[0069] The left battery support frame 30a may include a plurality of battery-side transverse members 31a, 32a, and 33a extending in the width direction of the left battery pack 8a and the width direction of the vehicle. The plurality of battery-side transverse members 31a, 32a, and 33a may include: a first battery-side transverse member 31a, adjacent to the front end of the left battery pack 8a; a second battery-side transverse member 32a, located behind the first battery-side transverse member 31a; and a third battery-side transverse member 33a, located behind the second battery-side transverse member 32a.

[0070] The first battery-side transverse member 31a may have a pair of flanges 71a and 72a at its two ends. Specifically, the first battery-side transverse member 31a may have a flange 71a connected to the left side beam 3a and a flange 72a connected to the lower left longitudinal member 14a. The flange 71a of the first battery-side transverse member 31a and the mounting flange 82a of the left battery pack 8a may be connected to the left side beam 3a by fasteners, welding, etc., and the flange 72a of the first battery-side transverse member 31a and the mounting flange 81a of the left battery pack 8a may be connected to the lower left longitudinal member 14a by fasteners, welding, etc.

[0071] The second battery-side transverse member 32a may have a pair of flanges 73a and 74a at its two ends, respectively. Specifically, the second battery-side transverse member 32a may have a flange 73a connected to the left side beam 3a and a flange 74a connected to the lower left longitudinal member 14a. The flange 73a of the second battery-side transverse member 32a and the mounting flange 82a of the left battery pack 8a may be connected to the left side beam 3a by fasteners, welding, etc., and the flange 74a of the second battery-side transverse member 32a and the mounting flange 81a of the left battery pack 8a may be connected to the lower left longitudinal member 14a by fasteners, welding, etc.

[0072] The third battery-side transverse member 33a may have a pair of flanges 75a and 76a at its two ends, respectively. Specifically, the third battery-side transverse member 33a may have a flange 75a connected to the left side beam 3a and a flange 76a connected to the lower left longitudinal member 14a. The flange 75a of the third battery-side transverse member 33a and the mounting flange 82a of the left battery pack 8a can be connected to the left side beam 3a by fastener 28a. The left flange 63a of the third tank-side transverse member 23, the flange 76a of the third battery-side transverse member 33a, and the mounting flange 81a of the left battery pack 8a can be connected to the lower left longitudinal member 14a by left fastener 27a. Therefore, the mounting stiffness of the third tank-side transverse member 23, the mounting stiffness of the third battery-side transverse member 33a, and the mounting stiffness of the left battery pack 8a can be increased.

[0073] As described above, according to an exemplary embodiment of this disclosure, the hydrogen tank and battery pack can be located below the central floor panel of the vehicle body, thereby ensuring luggage space and installation space for the rear seats.

[0074] According to an exemplary embodiment of this disclosure, the hydrogen tank can be disposed in the passage and the battery pack can be disposed below the central floor panel, thereby safely protecting the hydrogen tank and the battery pack.

[0075] In the foregoing description of the present disclosure with reference to exemplary embodiments and accompanying drawings, the present disclosure is not limited thereto. Various modifications and changes can be made to the present disclosure by those skilled in the art without departing from the spirit and scope of the present disclosure as claimed in the following claims.

Claims

1. A vehicle floor structure, comprising: Central floor panel; The channel extends along the longitudinal central axis of the central floor panel and has a channel cavity; A hydrogen tank, located within the channel cavity of the channel; A tank support frame is configured to support the hydrogen tank, such that the hydrogen tank is held within the channel cavity; and A pair of lower longitudinal members are attached to the bottom surface of the central floor panel and are respectively disposed on both sides of the passage. The tank support frame includes a plurality of tank-side transverse members extending in the width direction of the hydrogen tank and a tank-side longitudinal member extending in the length direction of the hydrogen tank, and the plurality of tank-side transverse members extend in the width direction of the channel to connect the pair of lower longitudinal members.

2. The vehicle floor structure according to claim 1, further comprising: A pair of first lower crossbeams are attached to the bottom surface of the central floor panel, are symmetrical to each other with respect to the passage, and are adjacent to the front of the passage; as well as A pair of second lower crossbeams are attached to the bottom surface of the central floor panel, are symmetrical to each other relative to the passage, and are adjacent to the rear of the passage.

3. The vehicle floor structure according to claim 2, wherein, At least one of the plurality of tank-side transverse members is aligned with and connected to the pair of first lower crossbeams along the width direction of the vehicle.

4. The vehicle floor structure according to claim 2, further comprising: A pair of first seat crossbeams are attached to the top surface of the central floor panel; as well as A pair of second seat crossbeams are attached to the top surface of the central floor panel and are located behind the pair of first seat crossbeams. The pair of first lower crossbeams are vertically aligned with the pair of first seat crossbeams.

5. A vehicle floor structure, comprising: Central floor panel; The channel extends along the longitudinal central axis of the central floor panel and has a channel cavity; A pair of first lower crossbeams are attached to the bottom surface of the central floor panel, are symmetrical to each other with respect to the passage, and are adjacent to the front of the passage; A pair of second lower crossbeams are attached to the bottom surface of the central floor panel, are symmetrical to each other with respect to the passage, and are adjacent to the rear of the passage; as well as A pair of lower longitudinal members are attached to the bottom surface of the central floor panel and are respectively disposed on the two side edges of the passage; A hydrogen tank, located within the channel cavity of the channel; A tank support frame is configured to support the hydrogen tank such that the hydrogen tank is held within the channel cavity, wherein the tank support frame includes: A plurality of tank-side transverse members, extending in the width direction of the hydrogen tank and in the width direction of the passage to connect the pair of lower longitudinal members, wherein at least one of the plurality of tank-side transverse members is aligned with and connected to the pair of first lower crossbeams along the width direction of the vehicle; and A longitudinal member on the tank side extends along the length of the hydrogen tank; The pair of first lower crossbeams, the pair of second lower crossbeams, and the pair of lower longitudinal members define a pair of cavities; and The pair of cavities are symmetrical to each other with respect to the channel.

6. The vehicle floor structure according to claim 5, further comprising: The battery pack is installed in at least one of the two cavities.

7. The vehicle floor structure according to claim 6, further comprising: A battery support frame is configured to support the battery pack, thereby holding the battery pack within the cavity.

8. The vehicle floor structure according to claim 7, wherein, The battery support frame includes a plurality of battery-side transverse members extending in the width direction of the battery pack.

9. The vehicle floor structure according to claim 8, wherein, At least one of the plurality of battery-side transverse members is aligned with and connected to at least one of the plurality of tank-side transverse members along the width direction of the vehicle.

10. The vehicle floor structure according to claim 9, wherein, The at least one battery-side transverse member and the at least one tank-side transverse member are connected to one of the pair of lower longitudinal members by fasteners.

11. The vehicle floor structure according to claim 5, further comprising: A third lower crossbeam is disposed in at least one of the pair of cavities, wherein the third lower crossbeam extends in the width direction of the vehicle.

12. The vehicle floor structure of claim 11, further comprising at least one battery-side transverse member, wherein the at least one battery-side transverse member and at least one of the plurality of tank-side transverse members are aligned with and connected to the third lower crossbeam along the width direction of the vehicle.

13. The vehicle floor structure according to claim 5, further comprising: The battery pack is installed in the first cavity of the pair of cavities; as well as An electronic component device is installed in the second cavity of the pair of cavities.

14. The vehicle floor structure according to claim 5, further comprising: A pair of battery packs are installed in the pair of cavities respectively.

15. A vehicle comprising: Body; A central floor panel is located at the bottom of the vehicle body; The rear floor panel is located at the bottom of the vehicle body and is located behind the central floor panel in the longitudinal direction of the vehicle body; The channel extends along the longitudinal central axis of the central floor panel and has a channel cavity; A hydrogen tank, located within the channel cavity of the channel; A tank support frame is configured to support the hydrogen tank, such that the hydrogen tank is held within the channel cavity; and A pair of lower longitudinal members are attached to the bottom surface of the central floor panel and are respectively disposed on both sides of the passage. The tank support frame includes a plurality of tank-side transverse members extending in the width direction of the hydrogen tank and a tank-side longitudinal member extending in the length direction of the hydrogen tank, and the plurality of tank-side transverse members extend in the width direction of the channel to connect the pair of lower longitudinal members.

16. The vehicle according to claim 15, further comprising: A pair of first lower crossbeams are attached to the bottom surface of the central floor panel, are symmetrical to each other with respect to the passage, and are adjacent to the front of the passage; as well as A pair of second lower crossbeams are attached to the bottom surface of the central floor panel, are symmetrical to each other relative to the passage, and are adjacent to the rear of the passage.

17. The vehicle according to claim 16, wherein, At least one of the plurality of tank-side transverse members is aligned with and connected to the pair of first lower crossbeams along the width direction of the vehicle.

18. The vehicle of claim 16, further comprising: A pair of first seat crossbeams are attached to the top surface of the central floor panel; as well as A pair of second seat crossbeams are attached to the top surface of the central floor panel and are located behind the pair of first seat crossbeams. The pair of first lower crossbeams are vertically aligned with the pair of first seat crossbeams.

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