EVTOL battery pack box structure and eVTOL aircraft

Abstract

The invention discloses an eVTOL battery pack box body structure and an eVTOL aircraft, and relates to the technical field of eVTOL aircrafts. Comprising a sectional material bottom plate, a metal plate top plate, two metal plate vertical plates, two cover plates and two sectional material hanging lugs. The metal plate top plate is arranged above the profile bottom plate in parallel, and the two metal plate vertical plates are connected to the two opposite sides of the profile bottom plate in the length direction respectively and are perpendicular to the metal plate top plate and the profile bottom plate. The two cover plates are connected to the two opposite sides of the sectional material bottom plate in the width direction respectively and are perpendicular to the metal plate top plate and the sectional material bottom plate, the sectional material hanging lugs are connected with the metal plate top plate and the metal plate vertical plates, and hanging holes are formed in the sectional material hanging lugs and the sectional material bottom plate. The battery pack has the beneficial effects that the part provided with the mounting hole is configured to be of a profile structure, and the part without the mounting hole is configured to be of a metal plate structure, so that the connection strength of the battery pack and the eVTOL aircraft is ensured, and the weight grouping efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of eVTOL aircraft, in particular to an eVTOL battery pack box structure and an eVTOL aircraft. BACKGROUND

[0002] The battery pack box of the traditional new energy vehicle is composed of a box frame in the shape of a rectangular cuboid, and an upper cover and a bottom guard plate connected to the top and bottom of the box frame. The box frame is usually composed of aluminum profiles, aluminum die casting, steel stamping and steel roller pressing, the upper cover is usually made of metal (DC 01 / 04 / 06 steel and high-strength steel HC340, etc.) and composite (SMC, PCM and RTM, etc.), and the bottom guard plate is usually made of aluminum profiles or steel stamping to ensure the structural strength of the box.

[0003] At present, the design of the eVTOL battery pack box presents different structural characteristics according to the type of the aircraft and the placement position of the battery pack box, etc. Mounting points need to be configured on the eVTOL battery pack box to connect with the aircraft body, but the weight grouping efficiency of the eVTOL battery system (the ratio of the total weight of the battery monomer to the weight of the entire battery system) is not high, and the eVTOL battery pack box needs to balance between strength, lightweight and safety and reliability. SUMMARY

[0004] Therefore, the present application provides an eVTOL battery pack box structure and an eVTOL aircraft to achieve the above-mentioned purpose.

[0005] The present application provides an eVTOL battery pack box structure, which comprises a profile bottom plate, a sheet metal top plate, two sheet metal vertical plates, two cover plates and two profile lugs. The sheet metal top plate is arranged above the profile bottom plate, and the two sheet metal vertical plates are respectively connected to the opposite sides of the profile bottom plate and the sheet metal top plate in the length direction. The two cover plates are respectively connected to the opposite sides of the profile bottom plate and the sheet metal top plate in the width direction, and the profile lugs are connected to the sheet metal top plate and the sheet metal vertical plates. The profile lugs and the profile bottom plate both have mounting holes. The length of the sheet metal top plate is less than the length of the profile bottom plate, the length of the sheet metal vertical plate is less than the width of the cover plate, and the profile lugs are inclinedly connected between the sheet metal vertical plate and the sheet metal top plate.

[0006] Optionally, the profile lug has opposite upper and lower surfaces, the first mounting portion extends away from the upper surface, the mounting hole is arranged on the first mounting portion, and the profile lug is welded to the sheet metal top plate and the sheet metal vertical plate through the lower surface.

[0007] Optionally, the sheet metal vertical plate has a first flange extending from opposite sides of the other sheet metal vertical plate in the width direction. The side of the first flange closest to the top sheet metal plate is a first inclined surface. The first inclined surface gradually slopes towards the bottom profile plate in the direction gradually away from the sheet metal vertical plate. The sheet metal vertical plate is welded to the lower surface of the profile lug through its two sides in the length direction and the first inclined surface.

[0008] Optionally, the sheet metal top plate has a second flange extending from opposite sides in the width direction toward the direction away from the profile bottom plate. The sides of the second flange on opposite sides in the length direction are both second inclined surfaces. The second inclined surfaces gradually slope toward the direction closer to the other second inclined surface in the direction gradually away from the profile bottom plate. The sheet metal top plate is welded to the lower surface of the profile lug through the sides on both sides in the length direction and the second inclined surfaces.

[0009] Optionally, the cover plate has a plurality of first connecting holes along its edge, and the first flange and the second flange have a plurality of second connecting holes and a third connecting hole corresponding to the first connecting holes, respectively. The profile base plate has a plurality of fourth connecting holes corresponding to the first connecting holes. The cover plate is connected to the sheet metal vertical plate through the first connecting holes and the second connecting holes, the cover plate is connected to the sheet metal top plate through the first connecting holes and the third connecting holes, and the cover plate is connected to the profile base plate through the first connecting holes and the fourth connecting holes.

[0010] Optionally, the profile lug also has a first side surface between the upper surface and the lower surface, and a fifth connecting hole is provided on the first side surface. The profile lug is also connected to the cover plate through the fifth connecting hole and the first connecting hole.

[0011] Optionally, the cover plate is a carbon fiber cover plate.

[0012] Optionally, a second mounting portion extends below the profile base plate, and the second mounting portion has mounting holes.

[0013] The present invention also provides an eVTOL aircraft, including the eVTOL battery pack housing structure described above.

[0014] The beneficial effects of this invention are as follows: by configuring the part with mounting holes as a profile structure and the part without mounting holes as a sheet metal structure, the connection strength between the battery pack and the eVTOL aircraft is guaranteed, and the weight grouping efficiency is high. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the eVTOL battery pack housing structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the profile base plate in the eVTOL battery pack housing structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the sheet metal vertical plate in the eVTOL battery pack housing structure of the present invention.

[0019] Figure 4 This is a schematic diagram of the sheet metal top plate in the eVTOL battery pack housing structure of the present invention.

[0020] Figure 5 This is a schematic diagram of the profile hanging lug in the eVTOL battery pack housing structure of the present invention.

[0021] Figure 6 This is a schematic diagram of the cover plate in the eVTOL battery pack housing structure of the present invention.

[0022] In the picture: Profile base plate 10, second mounting part 11, fourth connecting hole 12; Sheet metal top plate 20, second flange 21, third connecting hole 211, second inclined surface 212; Sheet metal vertical plate 30, first flange 31, second connecting hole 311, first inclined surface 312; Cover plate 40, first connecting hole 41; Profile hanging lug 50, upper surface 51, first mounting part 52, first side surface 53, fifth connecting hole 531; Mounting hole 60. Detailed Implementation

[0023] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0024] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0025] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0026] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0027] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0028] like Figures 1 to 6 As shown, this embodiment provides an eVTOL battery pack housing structure, including a profile base plate 10, a sheet metal top plate 20, two sheet metal vertical plates 30, two cover plates 40, and two profile hanging ears 50. The profile base plate 10, sheet metal top plate 20, two sheet metal vertical plates 30, two cover plates 40, and two profile hanging ears 50 enclose and form a housing structure to accommodate the battery assembly.

[0029] Specifically, the sheet metal top plate 20 is positioned parallel above the profile bottom plate 10. Two sheet metal vertical plates 30 are connected to opposite sides of the profile bottom plate 10 along its length and are perpendicular to both the sheet metal top plate 20 and the profile bottom plate 10. Two cover plates 40 are connected to opposite sides of the profile bottom plate 10 along its width and are perpendicular to both the sheet metal top plate 20 and the profile bottom plate 10. The sheet metal top plate 20, profile bottom plate 10, two sheet metal vertical plates 30, and two cover plates 40 together form a roughly rectangular parallelepiped structure, and the internal space they enclose is used to accommodate the battery assembly.

[0030] Among them, the profile mounting lug 50 connects the sheet metal top plate 20, the sheet metal vertical plate 30 and the two cover plates 40. Both the profile mounting lug 50 and the profile bottom plate 10 have mounting holes 60, which serve as mounting points for connecting the battery pack housing and the eVTOL aircraft. Both mounting points are profile structures, providing a solid connection between the battery pack housing and the eVTOL aircraft.

[0031] The eVTOL battery pack enclosure structure provided in this embodiment consists of a profile base plate 10, a sheet metal top plate 20, sheet metal vertical plates 30, profile mounting ears 50, and a cover plate 40. The mounting holes 60 connecting the enclosure to the eVTOL aircraft are respectively located on the profile base plate 10 and the profile mounting ears 50. Since both are profile structures, they provide a more robust connection between the enclosure and the eVTOL aircraft compared to sheet metal structures. Furthermore, the profile mounting ears 50 and the profile base plate 10 are located at the top and bottom of the enclosure structure, respectively, allowing the enclosure to connect to the eVTOL aircraft at both its top and bottom, thus improving connection strength. The sheet metal top plate 20 and sheet metal vertical plates 30, which do not have mounting holes 60, are sheet metal structures, meeting the requirements for lightweight enclosure design. Meanwhile, the profile mounting lugs 50 connect the sheet metal vertical plate 30 and the sheet metal top plate 20, avoiding the problem of insufficient weld seams after direct welding of the sheet metal vertical plate 30 and the sheet metal top plate 20 at the mounting point, thus ensuring the reliability of the weld seams during vibration and impact. Furthermore, the cover plate 40 can be a carbon fiber cover plate, further improving the lightweight of the enclosure.

[0032] Regarding the connection method between the sheet metal top plate 20 and the sheet metal vertical plate 30 and the profile hanging lug 50, such as Figure 1 As shown, the length of the sheet metal top plate 20 is less than the length of the profile bottom plate 10, and the length of the sheet metal vertical plate 30 is less than the width of the cover plate 40 (the cover plate 40 is connected to the profile bottom plate 10 and the sheet metal top plate 20 via its long side, and to the sheet metal vertical plate 30 via its wide side), so that the profile hanging ear 50 is inclinedly connected between the sheet metal vertical plate 30 and the sheet metal top plate 20. This configuration allows the sheet metal top plate 20 and the sheet metal vertical plate 30 to be welded to the same surface of the profile hanging ear 50, without needing to be welded to two adjacent surfaces of the profile hanging ear 50, allowing the profile hanging ear 50 to be configured with an internal honeycomb-like structure (such as...). Figure 5 As shown in the figure, the honeycomb structure runs through the profile lug 50, thereby reducing the weight of the profile lug 50 and further meeting the requirements for lightweighting.

[0033] Specifically, such as Figure 5As shown, the profile hanger is roughly cuboid in shape, and has an upper surface 51 and a lower surface (not shown). The upper and lower surfaces of the profile hanger 50 form a honeycomb-like structure, which extends through the profile hanger 50 in a direction parallel to the upper surface 51. A first mounting portion 52 extends from the upper surface 51 of the profile hanger 50 away from it. The first mounting portion 52 is roughly sheet-like, and mounting holes 60 are formed on the first mounting portion 52. The extension direction of the mounting holes 60 is consistent with the width direction of the sheet metal vertical plate 30. The profile hanger 50 is welded to the sheet metal top plate 20 and the sheet metal vertical plate 30 via its lower surface. The profile hanger 50 improves the strength of the mounting point of the enclosure while also welding the sheet metal top plate 20 and the sheet metal vertical plate 30 together, ensuring the welding strength of the sheet metal top plate 20 and the sheet metal vertical plate 30.

[0034] For the mounting points on the profile base plate 10, such as Figure 2 As shown, the profile base plate 10 has a cuboid structure with a honeycomb-like internal structure, giving it structural strength while maintaining light weight. Multiple second mounting portions 11 extend from the bottom of the profile base plate 10, located on opposite sides of the profile base plate 10 in the width direction. Each second mounting portion 11 has mounting holes 60, extending in the same direction as the width direction of the profile base plate 10.

[0035] Furthermore, to enhance the welding strength between the profile lug 50 and the sheet metal vertical plate 30, such as... Figure 1 and Figure 3 As shown, the sheet metal vertical plate 30 has a first flange 31 extending from opposite sides of the other sheet metal vertical plate 30 in its width direction. The side of the first flange 31 closest to the sheet metal top plate 20 is a first inclined surface 312. The first inclined surface 312 gradually slopes towards the profile bottom plate 10 in a direction gradually moving away from the sheet metal vertical plate 30. The first inclined surface 312 can accommodate the profile hanging ear 50 to connect with the sheet metal vertical plate 30, and the lower surface of the profile hanging ear 50 is inclined relative to the sheet metal vertical plate 30. The sheet metal vertical plate 30 is welded to the lower surface of the profile hanging ear 50 through its two sides in its length direction and the first inclined surface 312. That is, the welding position between the sheet metal vertical plate 30 and the lower surface of the profile hanging ear 50 is not only on both sides of the sheet metal vertical plate 30 along its length, but also welded to the lower surface of the profile hanging ear 50 through the first inclined surface 312 of the two first flanges 31, thereby improving the welding strength between the profile hanging ear 50 and the sheet metal vertical plate 30. The top of the sheet metal vertical plate 30 is welded to the profile hanging ear 50, and the bottom of the sheet metal vertical plate 30 is welded to both sides of the profile base plate 10 along its length.

[0036] Meanwhile, to enhance the welding strength between the profile lug 50 and the sheet metal top plate 20, such as Figure 1 and Figure 4As shown, the sheet metal top plate 20 has second flanges 21 extending from opposite sides of the profile bottom plate 10 in its width direction. The sides of the second flanges 21 in its length direction are both second inclined surfaces 212. These second inclined surfaces 212 gradually slope towards the other second inclined surface 212 as they move away from the profile bottom plate 10. The second inclined surfaces 212 are adapted to connect the profile lug 50 to the sheet metal top plate 20, and the lower surface of the profile lug 50 is inclined relative to the sheet metal top plate 20. The sheet metal top plate 20 is welded to the lower surface of the profile lug 50 via its sides in its length direction and the second inclined surfaces 212. That is, the welding position between the sheet metal top plate 20 and the lower surface of the profile lug 50 is not only on the sides in its length direction, but also through the second inclined surfaces 212 of the two second flanges 21, thus improving the welding strength between the profile lug 50 and the sheet metal top plate 20.

[0037] The profile base plate 10, sheet metal top plate 20, sheet metal vertical plate 30, and profile hanging ear 50 can be made of aluminum alloy or aluminum-magnesium alloy, and they are welded together by splicing.

[0038] Regarding the connection method of cover plate 40, such as Figures 1 to 6 As shown, the cover plate 40 has multiple first connecting holes 41 along its edge. The first flange 31 of the sheet metal vertical plate 30 and the second flange 21 of the sheet metal top plate 20 have multiple second connecting holes 311 and third connecting holes 211 corresponding to the first connecting holes 41, respectively. The profile bottom plate 10 has multiple fourth connecting holes 12 corresponding to the first connecting holes 41 on both sides in the width direction. The cover plate 40 is connected to the sheet metal vertical plate 30 through the first connecting holes 41 and the second connecting holes 311 on the first flange 31 of the sheet metal vertical plate 30. The cover plate 40 is connected to the sheet metal top plate 20 through the first connecting holes 41 and the third connecting holes 211 on the second flange 21 of the sheet metal top plate 20. The cover plate 40 is connected to the profile bottom plate 10 through the first connecting holes 41 and the fourth connecting holes 12 on the side of the profile bottom plate 10. The profile hanger 50 also has a first side surface 53 between its upper surface 51 and lower surface. A fifth connecting hole 531 is provided on the first side surface 53. The profile hanger 50 is also connected to the cover plate 40 through the fifth connecting hole 531 on the first side surface 53 and the first connecting hole 41 of the cover plate 40. The connection method can be that bolts are inserted into the first connecting hole 41 of the cover plate 40 and the corresponding connecting holes of several other components to connect the cover plate 40 to the profile base plate 10, the sheet metal top plate 20, the sheet metal vertical plate 30, and the profile hanger 50.

[0039] In summary, the eVTOL battery pack housing structure provided in this embodiment uses profiled lugs 50 with mounting holes 60 and profiled base plates 10 as profiled structures, providing robust support at the mounting points of the housing. The sheet metal top plate 20 and sheet metal vertical plates 30, which lack mounting holes 60, are configured as sheet metal structures, and the cover plate 40 is configured as a carbon fiber cover plate. This provides robust support at the mounting points while also meeting the requirement for lightweight housing. Furthermore, the first flange 31 of the sheet metal vertical plate 30 and the first and second inclined surfaces 312 and 212 on the second flange 21 of the sheet metal top plate 20 are adapted to accommodate the inclined installation of the profiled lugs 50, and enhance the welding strength between the sheet metal top plate 20, sheet metal vertical plate 30, and profiled lugs 50.

[0040] The present invention also provides an eVTOL aircraft, including the eVTOL battery pack housing structure described above.

[0041] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A casing structure for an eVTOL battery pack, characterized in that: The system includes a profile base plate (10), a sheet metal top plate (20), two sheet metal vertical plates (30), two cover plates (40), and two profile hanging ears (50). The sheet metal top plate (20) is arranged parallel above the profile base plate (10). The two sheet metal vertical plates (30) are respectively connected to the opposite sides of the profile base plate (10) and the sheet metal top plate (20) in the length direction. The two cover plates (40) are respectively connected to the opposite sides of the profile base plate (10) and the sheet metal top plate (20) in the width direction. The profile hanging ears (50) connect the sheet metal top plate (20) and the sheet metal vertical plates (30). Both the profile hanging ears (50) and the profile base plate (10) have mounting holes (60). The length of the sheet metal top plate (20) is less than the length of the profile bottom plate (10), the length of the sheet metal vertical plate (30) is less than the width of the cover plate (40), and the profile hanging ear (50) is obliquely connected between the sheet metal vertical plate (30) and the sheet metal top plate (20).

2. The eVTOL battery pack housing structure according to claim 1, characterized in that: The profile hanging ear (50) has an upper surface (51) and a lower surface, and a first mounting part (52) extends on the upper surface (51) in a direction away from the upper surface (51). The mounting hole (60) is opened on the first mounting part (52). The profile hanging ear (50) is welded to the sheet metal top plate (20) and the sheet metal vertical plate (30) through the lower surface.

3. The eVTOL battery pack housing structure according to claim 2, characterized in that: The sheet metal vertical plate (30) has a first flange (31) extending on both sides of its width direction toward the direction away from the other sheet metal vertical plate (30). The side of the first flange (31) near the sheet metal top plate (20) is a first inclined surface (312). The first inclined surface (312) gradually tilts toward the direction closer to the profile bottom plate (10) in a direction gradually away from the sheet metal vertical plate (30). The sheet metal vertical plate (30) is welded to the lower surface of the profile hanging ear (50) through the sides of its two sides in its length direction and the first inclined surface (312).

4. The eVTOL battery pack housing structure according to claim 3, characterized in that: The sheet metal top plate (20) has a second flange (21) extending on opposite sides in its width direction toward the direction away from the profile bottom plate (10). The second flange (21) has a second inclined surface (212) on opposite sides in its length direction. The second inclined surface (212) gradually tilts toward the direction closer to the other second inclined surface (212) in a direction gradually away from the profile bottom plate (10). The sheet metal top plate (20) is welded to the lower surface of the profile lug (50) through its two sides in its length direction and the second inclined surface (212).

5. The eVTOL battery pack housing structure according to claim 4, characterized in that: The cover plate (40) has a plurality of first connecting holes (41) along its edge. The first flange (31) and the second flange (21) have a plurality of second connecting holes (311) and third connecting holes (211) corresponding to the first connecting holes (41), respectively. The profile base plate (10) has a plurality of fourth connecting holes (12) corresponding to the first connecting holes (41). The cover plate (40) is connected to the sheet metal vertical plate (30) through the first connecting holes (41) and the second connecting holes (311). The cover plate (40) is connected to the sheet metal top plate (20) through the first connecting holes (41) and the third connecting holes (211). The cover plate (40) is connected to the profile base plate (10) through the first connecting holes (41) and the fourth connecting holes (12).

6. The eVTOL battery pack housing structure according to claim 5, characterized in that: The profile hanging ear (50) also has a first side surface (53) between the upper surface (51) and the lower surface. A fifth connecting hole (531) is provided on the first side surface (53). The profile hanging ear (50) is also connected to the cover plate (40) through the fifth connecting hole (531) and the first connecting hole (41).

7. The eVTOL battery pack housing structure according to claim 1, characterized in that: The cover plate (40) is a carbon fiber cover plate (40).

8. The eVTOL battery pack housing structure according to claim 1, characterized in that: A second mounting part (11) extends below the profile base plate (10), and a mounting hole (60) is provided on the second mounting part (11).

9. An eVTOL aircraft, characterized in that: Includes the eVTOL battery pack housing structure as described in any one of claims 1-8.

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