Filling assembly, tray, battery pack and vehicle

Abstract

The utility model discloses a filling assembly, a tray, a battery pack and a vehicle, the filling assembly comprises a framework and at least one foaming layer, and the foaming layer covers at least one part of the outer surface of the framework. Therefore, the framework plays a role in supporting and positioning, positioning of the filling assembly is facilitated, the assembling position of the filling assembly is more accurate, and the structural strength of the filling assembly can be improved. At least one part of the outer surface of the framework is covered with the foaming layer, closed-cell foam formed after the foaming layer expands and foams can be adhered to the outer surface of the framework, and the filling assembly can have good heat preservation capacity, collision energy absorption capacity, local collision deformation dispersion capacity and NVH performance. The foaming layer has a certain expansion range, so that the framework does not need to have high precision and is allowed to have defects such as burrs, pits or flashes, the production and manufacturing difficulty of the filling assembly can be reduced, and the production cost of the filling assembly can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a filling component, a tray, a battery pack and a vehicle. Background Art

[0002] In the prior art, a battery pack is composed of a frame, a bottom plate and a filling component, and the filling component is arranged in a cavity inside the frame or the bottom plate. However, the existing filling component increases the assembly difficulty of battery pack manufacturing and affects the strengthening effect; when the filling component is located at the welding joint of the frame, the high temperature generated at the welding joint will ablate the reinforcing body made of glass fiber or carbon fiber reinforced resin composite material. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, one object of the utility model is to provide a filling component, which can improve the mechanical strength of the filling component and enhance the heat preservation performance of the filling component.

[0004] The second object of the utility model is to provide a tray, which includes a tray body and the filling component described in the above embodiment.

[0005] The third object of the utility model is to provide a battery pack, which includes the tray described in the above embodiment.

[0006] The fourth object of the utility model is to provide a vehicle, which includes the battery pack described in the above embodiment.

[0007] The filling component according to the first aspect embodiment of the utility model includes: a skeleton, at least one foaming layer and a heat insulation layer, the foaming layer covers at least a part of the outer surface of the skeleton, and the heat insulation layer is arranged on at least a part of the surface of the foaming layer away from the skeleton.

[0008] According to the filling component of the embodiment of the utility model, the skeleton plays a role in support and positioning, which is convenient for the positioning of the filling component, makes the assembly position of the filling component more accurate, and can also improve the structural strength of the filling component. At least a part of the outer surface of the skeleton is covered with the foaming layer, and the closed-cell foam formed after the foaming layer expands and foams can adhere to the outer surface of the skeleton, which can endow the filling component with good heat preservation ability, collision energy absorption ability, local collision deformation dispersion ability and NVH performance. Since the foaming layer has a certain expansion range, the skeleton does not need to have high precision and allows the skeleton to have some defects such as burrs, pits or flash, which can reduce the production and manufacturing difficulty of the filling component and the production cost of the filling component.

[0009] In some embodiments, the filling component includes a first filling component; the framework of the first filling component is a plate-like structure; there are two foaming layers in the first filling component, and the two foaming layers respectively cover both surfaces on the two sides in the thickness direction of the framework.

[0010] In some embodiments, it further includes: at least one first support structure, the first support structure is arranged on the framework, and the first support structure protrudes from at least one side surface of the foaming layer away from the framework.

[0011] In some embodiments, there are multiple first support structures, and the multiple first support structures include: at least one first sub-support structure and at least one second sub-support structure. The first sub-support structure is arranged on at least one side surface in the thickness direction of the framework, and the second sub-support structure is arranged on the side surface of the framework, and a part of the second sub-support structure extends to at least one side surface in the thickness direction of the framework.

[0012] In some embodiments, there are multiple first sub-support structures, and the multiple first sub-support structures are respectively arranged in an array on both surfaces in the thickness direction of the framework; there are multiple second sub-support structures, and the multiple second sub-support structures are arranged at intervals along the circumferential direction of the framework, and both ends of the second sub-support structure respectively extend to both surfaces in the thickness direction of the framework.

[0013] In some embodiments, the first support structure is a cross-shaped structure, a rice-shaped structure, a wavy structure or a polygonal structure.

[0014] In some embodiments, the height that the first support structure protrudes from at least one side surface of the foaming layer away from the framework is h, where the h satisfies: 3mm ≤ h ≤ 5mm.

[0015] In some embodiments, multiple through holes are formed on the framework, and the two foaming layers are connected into one body through the multiple through holes; and / or multiple protrusions are arranged on at least one side surface in the thickness direction of the framework, and the foaming layer covers the outer surfaces of the multiple protrusions.

[0016] In some embodiments, the first support structure and the framework are an integral structural member; or the first support structure is bonded or clamped to the framework.

[0017] In some embodiments, multiple positioning holes are formed at the edge of the first filling component, and the multiple positioning holes are arranged at intervals along the circumferential direction of the first filling component.

[0018] In some embodiments, the frameworks and the foaming layers are respectively multiple. The multiple foaming layers respectively cover at least a part of the outer surfaces of the multiple frameworks. The multiple frameworks and the multiple foaming layers respectively form multiple sub-filling components, and the multiple sub-filling components are adapted to be detachably connected.

[0019] In some embodiments, at least one connection groove is formed on one of the multiple sub-filling components, and at least one connection protrusion is provided on another one of the multiple sub-filling components. The connection protrusion is adapted to be fitted in the connection groove to realize the detachable connection of the multiple sub-filling components.

[0020] In some embodiments, the connection groove penetrates through the corresponding sub-filling component along the thickness direction of the framework, and the width of the connection groove gradually decreases along the direction towards the edge of the corresponding sub-filling component; the shape of the connection protrusion is adapted to the shape of the connection groove.

[0021] In some embodiments, the connection grooves and the connection protrusions are respectively multiple. The multiple connection grooves are arranged at intervals along the length direction of the corresponding sub-filling component, and the multiple connection protrusions respectively correspond to the multiple connection grooves.

[0022] In some embodiments, the filling component includes a second filling component; the framework of the second filling component is a strip-shaped structure; the foaming layer of the second filling component covers the outer peripheral surface of the framework.

[0023] In some embodiments, it further includes: at least one second support structure, the second support structure is arranged on the framework, and the second support structure protrudes from the surface of at least one foaming layer away from the framework.

[0024] In some embodiments, the second support structures are multiple. The multiple second support structures include: at least one third sub-support structure and at least one fourth sub-support structure. The third sub-support structure is arranged at the first corner of the framework, and the fourth sub-support structure is arranged at the second corner of the framework. The second corner is opposite to the first corner.

[0025] In some embodiments, the third sub-support structures are multiple. The multiple third sub-support structures are arranged at intervals along the length direction of the framework, and both ends of the third sub-support structure respectively extend to the two surfaces of the framework adjacent to the first corner; the fourth sub-support structures are multiple. The multiple fourth sub-support structures are arranged at intervals along the length direction of the framework, and both ends of the fourth sub-support structure respectively extend to the two surfaces of the framework adjacent to the second corner.

[0026] In some embodiments, the plurality of third sub-support structures and the plurality of fourth sub-support structures are arranged in a staggered manner along the length direction of the skeleton.

[0027] In some embodiments, at least one first mounting structure is provided on the skeleton.

[0028] In some embodiments, the first mounting structure includes at least one of an embedded nut, a slot, and a hollow column structure.

[0029] In some embodiments, the skeleton is a hollow structure.

[0030] In some embodiments, the thermal insulation layer is a mica sheet, an aerogel, or a thermal insulation coating.

[0031] In some embodiments, the heat insulation layer is bonded or sprayed onto at least a portion of the surface of the foaming layer away from the skeleton.

[0032] In some embodiments, the foaming layer is secondary injection molded on the frame; or the foaming layer is bonded or clamped to the frame.

[0033] In some embodiments, the skeleton is made of nylon or a fiber-reinforced resin composite material.

[0034] The pallet according to the second aspect of the present invention comprises: a pallet body and a filling assembly, wherein the filling assembly is the filling assembly according to the first aspect of the present invention, and the filling assembly is disposed in the pallet body.

[0035] In some embodiments, the pallet body includes: a frame and a bottom plate assembly, the frame includes a plurality of beam structures, the bottom plate assembly includes a bottom plate and a bottom guard plate, the bottom plate is arranged at the bottom of the frame, and the bottom guard plate is arranged below the bottom plate; the filling assembly includes at least one of a first filling assembly and a second filling assembly, the first filling assembly is arranged between the bottom plate and the bottom guard plate, and the second filling assembly is arranged in at least one of the plurality of beam structures.

[0036] In some embodiments, a plurality of second mounting structures are provided on the bottom guard plate, and the first filling assembly is mounted on the bottom guard plate through the plurality of second mounting structures.

[0037] In some embodiments, the second mounting structure includes a plurality of clips arranged at intervals, and one end of the plurality of clips adjacent to the first filling component has a clip portion, the clip portions of the plurality of clips are located on a side of the plurality of clips away from each other, and the clip portions of the plurality of clips pass through positioning holes corresponding to the first filling component and are suitable for stopping against a surface on one side of the first filling component adjacent to the base plate.

[0038] In some embodiments, it further includes: a plurality of first fasteners, and the first fasteners pass through the corresponding positioning holes of the first filling assembly and cooperate with the corresponding second mounting structures.

[0039] In some embodiments, the first fasteners are screws or rivets.

[0040] In some embodiments, the bottom plate is a heat exchange plate.

[0041] In some embodiments, at least one mounting hole is formed in at least one of the plurality of beam structures; the tray further includes: at least one second fastener, and the second fastener passes through the mounting hole and cooperates with the first mounting structure of the second filling assembly.

[0042] In some embodiments, the plurality of beam structures include: cross beams, longitudinal beams, intermediate cross beams, first corner beams and second corner beams, the cross beams include a first cross beam and a second cross beam, and the first cross beam and the second cross beam are arranged at intervals; the longitudinal beams include a first longitudinal beam and a second longitudinal beam, and the first longitudinal beam and the second longitudinal beam are respectively connected between the two ends of the first cross beam and the second cross beam; the intermediate cross beam is connected between the first longitudinal beam and the second longitudinal beam, and the intermediate cross beam is located between the first cross beam and the second cross beam; the first longitudinal beam and the first cross beam are connected by the first corner beam, and the second longitudinal beam and the first cross beam are connected by the second corner beam; there are a plurality of second filling assemblies, and the plurality of second filling assemblies are respectively arranged in the first cross beam, the second cross beam, the first longitudinal beam, the second longitudinal beam, the intermediate cross beam, the first corner beam and the second corner beam.

[0043] In some embodiments, the second filling assembly includes a corner filling assembly, and the corner filling assembly includes: a first corner filling assembly, one end of the first corner filling assembly is fitted in the longitudinal beam, and the other end of the first corner filling assembly is fitted in the second cross beam.

[0044] In some embodiments, the corner filling assembly further includes: a second corner filling assembly, one end of the second corner filling assembly is fitted in the longitudinal beam or the first cross beam, and the other end of the second corner filling assembly is fitted in the first corner beam or the second corner beam.

[0045] In some embodiments, the corner filling assembly is connected to the second filling assembly in the adjacent cross beam or longitudinal beam through at least one connecting structure.

[0046] In some embodiments, the connection structure includes: a connection hole and a connection shaft. The connection hole is formed on one of the corner filling component and the second filling component in the adjacent cross beam or longitudinal beam. The connection shaft is on the other of the corner filling component and the second filling component in the adjacent cross beam or longitudinal beam, and the connection shaft is fitted in the connection hole.

[0047] In some embodiments, the plurality of beam structures further include: a plurality of mounting beams and a plurality of lugs. The plurality of mounting beams are respectively arranged on one side of the first longitudinal beam and the second longitudinal beam away from each other. The plurality of lugs are respectively arranged on one side of the first cross beam and the second cross beam away from each other. The second filling components are respectively arranged in the plurality of mounting beams and the plurality of lugs.

[0048] In some embodiments, a plurality of cavities are formed in at least one of the plurality of beam structures, and at least one of the plurality of cavities is provided with the second filling component.

[0049] The battery pack according to the third aspect embodiment of the present invention includes the tray according to the second aspect embodiment of the present invention above.

[0050] The vehicle according to the fourth aspect embodiment of the present invention includes the battery pack according to the third aspect embodiment of the present invention above.

[0051] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0053] Figure 1 is a schematic diagram of a battery pack according to an embodiment of the present invention.

[0054] Figure 2 is an exploded schematic diagram of a battery pack according to an embodiment of the present invention.

[0055] Figure 3 is an exploded schematic diagram of a tray according to an embodiment of the present invention.

[0056] Figure 4 is a cross-sectional schematic diagram of a frame according to an embodiment of the present invention.

[0057] Figure 5 is Figure 4 an enlarged schematic diagram of the P region in

[0058] Figure 6 is Figure 4 An enlarged schematic view of the Q area in

[0059] Figure 7 A schematic view of the first filling component according to an embodiment of the present utility model.

[0060] Figure 8 is Figure 7 An enlarged schematic view of the R area in

[0061] Figure 9 A cross-sectional schematic view of the first support structure according to an embodiment of the present utility model.

[0062] Figure 10 A partial cross-sectional schematic view of the first filling component according to an embodiment of the present utility model.

[0063] Figure 11 A cross-sectional schematic view of the through hole according to an embodiment of the present utility model.

[0064] Figure 12 A cross-sectional schematic view of the protrusion according to an embodiment of the present utility model.

[0065] Figure 13 A schematic view of the sub-filling component according to an embodiment of the present utility model.

[0066] Figure 14 An exploded schematic view of the sub-filling component according to an embodiment of the present utility model.

[0067] Figure 15 A schematic view of the first filling component and the bottom guard plate according to an embodiment of the present utility model.

[0068] Figure 16 is Figure 15 An enlarged schematic view of the S area in

[0069] Figure 17 A schematic view of the positioning hole and the second mounting structure according to an embodiment of the present utility model.

[0070] Figure 18 An assembly schematic view of the second mounting structure and the first filling component according to an embodiment of the present utility model.

[0071] Figure 19 A schematic view of the second mounting structure and the first fastener according to an embodiment of the present utility model.

[0072] Figure 20 An exploded schematic view of the frame and the second filling component according to an embodiment of the present utility model.

[0073] Figure 21 A schematic view of the frame according to an embodiment of the present utility model.

[0074] Figure 22 is an exploded view of the frame according to an embodiment of the present utility model.

[0075] Figure 23 is a sectional view of the frame according to an embodiment of the present utility model.

[0076] Figure 24 is a schematic view of the second filling component according to an embodiment of the present utility model.

[0077] Figure 25 is an assembly schematic view of the first corner filling component according to an embodiment of the present utility model.

[0078] Figure 26 is a sectional view of the first corner filling component according to an embodiment of the present utility model.

[0079] Figure 27 is an assembly schematic view of the second corner filling component according to an embodiment of the present utility model.

[0080] Figure 28 is a sectional view of the second corner filling component according to an embodiment of the present utility model.

[0081] Figure 29 is a schematic view of the second corner filling component according to an embodiment of the present utility model.

[0082] Figure 30 is a schematic view of the connection structure according to an embodiment of the present utility model.

[0083] Reference numerals:

[0084] 100, filling component;

[0085] 10, skeleton; 11, foaming layer;

[0086] 20, first filling component; 21, first support structure; 211, first sub - support structure; 212, second sub - support structure; 22, through - hole; 23, protrusion; 24, positioning hole; 25, sub - filling component; 251, first sub - filling component; 252, second sub - filling component; 253, third sub - filling component; 254, connecting protrusion; 255, connecting groove;

[0087] 30, second filling component; 31, second support structure; 311, third sub - support structure; 312, fourth sub - support structure; 32, first corner; 33, second corner; 34, first installation structure; 35, first corner filling component; 36, second corner filling component; 361, first sub - corner filling component; 362, second sub - corner filling component; 37, connection structure; 371, connection hole; 372, connection shaft;

[0088] 200, Tray

[0089] 40, Tray body

[0090] 50, Frame; 51, Beam structure; 511, Second fastener; 52, Mounting hole; 53, Cross beam; 531, First cross beam; 532, Second cross beam; 54, Longitudinal beam; 541, First longitudinal beam; 542, Second longitudinal beam; 55, Intermediate cross beam; 56, First corner beam; 57, Second corner beam; 58, Mounting beam; 59, Lifting lug

[0091] 60, Bottom plate assembly; 61, Bottom plate; 62, Bottom guard plate; 63, Second mounting structure; 631, Snap; 632, Buckle part; 633, Connecting part; 64, First fastener

[0092] 300, Battery pack

[0093] 70, Upper cover; 71, Battery module

[0094] A, First direction; B, Second direction; C, Third direction Detailed implementation mode

[0095] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary. Below, reference is made to Figures 1 - 30 Describe the filling component 100 according to the embodiments of the present utility model, including: a skeleton 10 and at least one foaming layer 11

[0096] Specifically, as Figures 1 - 6 shown, the foaming layer 11 covers at least a part of the outer surface of the skeleton 10

[0097] Combined with Figures 1 - 6 , the foaming layer 11 can expand and foam under specific high-temperature baking conditions. After foaming, the foaming layer 11 forms closed-cell foam, which has good heat insulation performance and strong adhesion on the surfaces of metal and non-metal materials. The foaming layer 11 covers the outer surface of the skeleton 10 and forms an integral body with the skeleton 10

[0098] According to the filling component 100 of the embodiment of the present utility model, the skeleton 10 plays a role in supporting and positioning, facilitating the positioning of the filling component 100, making the assembly position of the filling component 100 more accurate, and can also improve the structural strength of the filling component 100. At least a part of the outer surface of the skeleton 10 is covered with a foaming layer 11. The closed-cell foam formed after the foaming layer 11 expands and foams can adhere to the outer surface of the skeleton 10, enabling the filling component 100 to have good heat insulation ability, collision energy absorption ability, local collision deformation dispersion ability, and NVH performance. Since the foaming layer 11 has a certain expansion range, the skeleton 10 does not need to have high precision, and defects such as burrs, pits, or flash on the skeleton 10 are allowed, which can reduce the manufacturing difficulty of the filling component 100 and the production cost of the filling component 100.

[0099] According to some embodiments of the present utility model, as Figures 5 - 7 shown, the filling component 100 includes a first filling component 20; the skeleton 10 of the first filling component 20 is a plate-like structure; there are two foaming layers 11 of the first filling component 20, and the two foaming layers 11 respectively cover both side surfaces of the skeleton 10 in the thickness direction. The two foaming layers 11 covering both side surfaces of the skeleton 10 in the thickness direction have equal thicknesses. Thus, the plate-like skeleton 10 can serve as the structural main body of the filling component 100, enhancing the structural strength and structural stability of the first filling component 20 and bearing the foaming layer 11. The two foaming layers 11 respectively covering both side surfaces of the skeleton 10 in the thickness direction can enable the two foaming layers 11 to more comprehensively cover the skeleton 10 after foaming, improving the heat insulation performance and impact resistance performance of the first filling component 20.

[0100] According to some embodiments of the present utility model, as Figures 7 - 9 shown, it further includes: at least one first support structure 21, the first support structure 21 is arranged on the skeleton 10, and the first support structure 21 protrudes from at least one side surface of the foaming layer 11 away from the skeleton 10. The first support structure 21 protrudes from both side surfaces of the skeleton 10 in the thickness direction towards the direction away from the center of the skeleton 10. The heights of the parts of the first support structure 21 protruding from both side surfaces of the skeleton 10 in the thickness direction are equal, that is, along the thickness direction of the skeleton 10, the first support structure 21 is symmetrically distributed. Along the thickness direction of the skeleton 10, the height of the first support structure 21 relative to the surface of the skeleton 10 is greater than the thickness of the foaming layer 11, that is, the first support structure 21 protrudes from the foaming layer 11.

[0101] Thus, the provision of the first support structure 21 facilitates the assembly of the first filling component 20. The fact that the first support structure 21 protrudes from the foaming layer 11 facilitates positioning of the first filling component 20 in the thickness direction. The first filling component 20 is adapted to be assembled in a closed or semi-closed space. The first support structure 21 is adapted to contact the inner wall of the assembly space of the first filling component 20. The provision of the first support structure 21 can cause the skeleton 10 to be located at the middle position of the assembly space after assembly. The fact that the first support structure 21 protrudes from at least one side surface of the foaming layer 11 away from the skeleton 10 can leave an expansion gap for the foaming expansion of the foaming layer 11, improving the reliability of the first filling component 20.

[0102] According to some embodiments of the present invention, as Figures 7 - 9 shown, there are a plurality of first support structures 21, and the plurality of first support structures 21 include: at least one first sub-support structure 211 and at least one second sub-support structure 212. The first sub-support structure 211 is provided on at least one side surface of the skeleton 10 in the thickness direction, and the second sub-support structure 212 is provided on the side surface of the skeleton 10, and a part of the second sub-support structure 212 extends to at least one side surface of the skeleton 10 in the thickness direction.

[0103] The skeleton 10 has a length direction and a width direction. In some embodiments, a plurality of first sub-support structures 211 are provided on both side surfaces of the skeleton 10 in the thickness direction, and the plurality of first sub-support structures 211 located on the two side surfaces of the skeleton 10 are opposite to each other one by one in the thickness direction. The plurality of first sub-support structures 211 protrude from the two side surfaces of the skeleton 10 in the thickness direction of the skeleton 10. A plurality of second sub-support structures 212 are provided on the skeleton 10, and the plurality of second sub-support structures 212 are provided on the four peripheral sides of the skeleton 10 along the circumferential direction of the skeleton 10, and the plurality of second sub-support structures 212 protrude from the four peripheral edges of the skeleton 10.

[0104] Thus, the provision of the first sub-support structure 211 can achieve the positioning effect on the first filling component 20 in the thickness direction, and the second sub-support structure 212 can achieve the positioning effect on the first filling component 20 in the length direction and the width direction of the skeleton 10. The first sub-support structure 211 and the second sub-support structure 212 are adapted to contact and abut against the inner wall of the assembly space of the first filling component 20, so that a preset distance is maintained between the outer surface of the first filling component 20 and the inner wall of the assembly space.

[0105] According to some embodiments of the present invention, as Figures 7 - 9As shown, there are multiple first sub-support structures 211, and the multiple first sub-support structures 211 are respectively arranged in an array on both surfaces of the skeleton 10 in the thickness direction; there are multiple second sub-support structures 212, and the multiple second sub-support structures 212 are arranged at intervals along the circumferential direction of the skeleton 10, and both ends of the second sub-support structure 212 respectively extend to both surfaces of the skeleton 10 in the thickness direction.

[0106] The multiple first sub-support structures 211 are uniformly arranged at intervals along the length direction and the width direction of the skeleton 10 on both surfaces of the skeleton 10 in the thickness direction. The multiple second sub-support structures 212 are arranged at intervals on the four peripheral edges of the skeleton 10, and the second sub-support structure 212 extends along the thickness direction of the skeleton 10. In some embodiments, both ends of the second sub-support structure 212 are connected to the ends of some of the first support structures 21.

[0107] Thus, the arrangement of the multiple first sub-support structures 211 and the multiple second sub-support structures 212 can make the positioning effect of the first support structure 21 on the first filling component 20 more comprehensive and sufficient, realizing precise positioning during the assembly of the first filling component 20.

[0108] According to some embodiments of the present invention, as Figure 7 shown, the first support structure 21 is a cross-shaped structure, a star-shaped structure, a wavy structure or a polygonal structure. After the filling component 100 is assembled, the anti-corrosion treatment solution freely flows between the outer surface of the filling component 100 in the thickness direction and the inner wall of the assembly space, and none of the multiple first support structures 21 are connected to form a closed structure to avoid affecting the free flow of the anti-corrosion treatment solution on the surface of the filling component 100. Thus, the first support structure 21 being a cross-shaped structure, a star-shaped structure, a wavy structure or a polygonal structure can increase the surface area of the first support structure 21 to improve the reliability of the first support structure 21 during the assembly of the filling component 100 and enhance the accuracy of the positioning effect of the first support structure 21 on the filling component 100.

[0109] According to some embodiments of the present invention, as Figure 5 shown, the height h of the first support structure 21 protruding from at least one side surface of the foaming layer 11 away from the skeleton 10 satisfies: 3 mm ≤ h ≤ 5 mm.

[0110] That is, along the thickness direction of the framework 10, the distance between the end of the first support structure 21 away from the center of the framework 10 and the surface of the foam layer 11 away from the framework 10 is h. That is, after the filling assembly 100 is assembled, the distance between the foam layer 11 and the inner wall of the assembly space is h. If the height h of the first support structure 21 protruding from the surface of at least one foam layer 11 away from the framework 10 is less than 3 mm, the distance between the foam layer 11 and the inner wall of the assembly space is too small, which will cause the flow of the anti-corrosion treatment solution to be blocked therebetween. If the height h of the first support structure 21 protruding from the surface of at least one foam layer 11 away from the framework 10 is greater than 5 mm, the distance between the foam layer 11 and the inner wall of the assembly space is too large, resulting in waste of space and also being not conducive to reducing the production cost of the filling assembly 100. For example, h = 4 mm.

[0111] Therefore, by defining the height of the first support structure 21 protruding from the surface of at least one foam layer 11 away from the framework 10, it can ensure that the free flow of the anti-corrosion treatment solution is not affected, and it can also leave a certain space for the foaming expansion of the foam layer 11.

[0112] According to some embodiments of the present invention, as Figures 10 - 12 shown, a plurality of through holes 22 are formed on the framework 10, and two foam layers 11 are connected into one body through the plurality of through holes 22. The through holes 22 penetrate through the framework 10 along the thickness direction of the framework 10, and the plurality of through holes 22 are arranged on the framework 10 at intervals along the width direction and the length direction of the framework 10. Foam layers 11 are attached to both surfaces of the framework 10 along the thickness direction, and the two foam layers 11 located on both surfaces of the framework 10 along the thickness direction are solidified into one body through the through holes 22 and thus are not easily detached.

[0113] Alternatively, a plurality of protrusions 23 are provided on at least one surface of the framework 10 in the thickness direction, and the foam layer 11 covers the outer surfaces of the plurality of protrusions 23. The protrusions 23 are formed by a part of at least one surface of the framework 10 in the thickness direction protruding from the surface of the framework 10 in a direction away from the center of the framework 10, and the plurality of protrusions 23 are arranged on the surface of the framework 10 at intervals along the width direction and the length direction of the framework 10, and the foam layer 11 is attached to the plurality of protrusions 23. Alternatively, a plurality of through holes 22 are formed on the framework 10, and a plurality of protrusions 23 are also formed.

[0114] Therefore, the arrangement of the plurality of through holes 22 can make the foam layer 11 more firmly attached to the surface of the framework 10, and the arrangement of the protrusions 23 can increase the contact area between the foam layer 11 and the surface of the framework 10 to increase the adhesion of the foam layer 11. The arrangements of the through holes 22 and the protrusions 23 are both used to enhance the connection strength between the foam layer 11 and the framework 10, so as to improve the overall reliability of the filling assembly 100.

[0115] According to some embodiments of the present utility model, the first support structure 21 and the skeleton 10 are an integral structural member. The fact that the first support structure 21 and the skeleton 10 are an integral structural member facilitates the mass production of the first support structure 21 and the skeleton 10, and simplifies the assembly steps between the first support structure 21 and the skeleton 10. Alternatively, the first support structure 21 and the skeleton 10 are adhesively connected or snap-connected, which can simplify the structure of the skeleton 10, reduce the production difficulty of the skeleton 10, and thus reduce the production cost of the skeleton 10.

[0116] According to some embodiments of the present utility model, as Figures 15 - 19 shown, a plurality of positioning holes 24 are formed at the edge of the first filling component 20, and the plurality of positioning holes 24 are arranged at intervals along the circumferential direction of the first filling component 20. The positioning holes 24 penetrate through the first filling component 20 along the thickness direction of the skeleton 10, and the positioning holes 24 are arranged at the four peripheral edges of the first filling component 20. The positioning holes 24 are used to cooperate with fasteners, and the fasteners are inserted into the positioning holes 24 to realize the assembly of the first filling component 20. Thus, the positioning holes 24 are provided for the installation and positioning of the first filling component 20 during the assembly process, and the arrangement of the plurality of positioning holes 24 can improve the positioning accuracy and assembly firmness of the first filling component 20. The first filling component 20 is applicable to the battery pack 300. The plurality of positioning holes 24 are arranged at intervals along the circumferential direction of the first filling component 20, and the positioning holes 24 are arranged at the four peripheral edges of the first filling, so that the positioning holes 24 can avoid the projection area of the battery module 71, and prevent the fasteners fitted in the positioning holes 24 from becoming a protruding structure and invading and damaging the battery cells inside the battery module 71 when this position is subjected to impact.

[0117] According to some embodiments of the present utility model, as Figure 13 and Figure 14 shown, there are a plurality of skeletons 10 and a plurality of foaming layers 11 respectively. The plurality of foaming layers 11 respectively cover at least a part of the outer surfaces of the plurality of skeletons 10. The plurality of skeletons 10 and the plurality of foaming layers 11 respectively constitute a plurality of sub-filling components 25, and the plurality of sub-filling components 25 are adapted to be detachably connected.

[0118] For example, along the length direction of the framework 10, the first filling component 20 is divided into a plurality of sub-filling components 25, and the adjacent filling components 100 are detachably connected between the adjacent side edges along the length direction. The volume of the sub-filling component 25 is small, and the sub-filling component 25 can also be arranged in regions. For example, when the filling component 100 is applied to the battery pack 300, the sub-filling component 25 can be arranged in the regions that need to be protected emphatically, so as to enhance the protection effect of the filling component 100 on the battery pack 300, and enhance the practicability and functionality of the filling component 100. Thus, when the size of the filling component 100 is large, the filling component 100 is formed by a plurality of sub-filling components 25 with smaller sizes, which can reduce the production difficulty of the filling component 100, facilitate the mass production of the filling component 100, and is beneficial to reducing the production cost of the filling component 100.

[0119] According to some embodiments of the present invention, as Figure 13 and Figure 14 shown, at least one connection groove 255 is formed on one of the plurality of sub-filling components 25, and at least one connection protrusion 254 is provided on another one of the plurality of sub-filling components 25. The connection protrusion 254 is adapted to be fitted in the connection groove 255 to realize the detachable connection of the plurality of sub-filling components 25.

[0120] A plurality of sub-filling components 25 form a first sub-filling component 25. The plurality of sub-filling components 25 include: a first sub-filling component 25, at least one second sub-filling component 25, and a third sub-filling component 25. The first sub-filling component 25 and the third sub-filling component 25 are respectively arranged on both sides of at least one second sub-filling component 25 along the length direction of the framework 10. A plurality of connection grooves 255 are formed on the side edge of the first sub-filling component 25 adjacent to the second sub-filling component 25 along the length direction of the framework 10, and the plurality of connection grooves 255 are arranged at intervals along the width direction of the framework 10. A plurality of connection protrusions 254 are formed on the side edge of the third sub-filling component 25 adjacent to the second sub-filling component 25 along the length direction of the framework 10, and the plurality of connection protrusions 254 are arranged at intervals along the width direction of the framework 10. A plurality of connection protrusions 254 are formed on the side edge of the second sub-filling component 25 adjacent to the first sub-filling component 25 along the length direction of the framework 10, and a plurality of connection grooves 255 are formed on the other side edge of the second sub-filling component 25 adjacent to the third sub-filling component 25 along the length direction of the framework 10.

[0121] Thus, the first sub-filling component 25, the second sub-filling component 25 and the third sub-filling component 25 are connected through the cooperation between the connecting protrusion 254 and the connecting groove 255 to form the first filling component 20. The arrangement of the connecting groove 255 and the connecting protrusion 254 can improve the connection reliability between the first sub-filling component 25, the second sub-filling component 25 and the third sub-filling component 25, and can also simplify the assembly difficulty of the sub-filling component 25, facilitating the reduction of the assembly cost of the sub-filling component 25.

[0122] According to some embodiments of the present invention, as Figure 13 and Figure 14 shown, the connecting groove 255 penetrates through the corresponding sub-filling component 25 in the thickness direction of the skeleton 10, and the width of the connecting groove 255 gradually decreases in the direction towards the edge of the corresponding sub-filling component 25; the shape of the connecting protrusion 254 is adapted to the shape of the connecting groove 255.

[0123] The connecting groove 255 is formed by recessing a part of the edge of the sub-filling component 25 along one side of the length direction of the skeleton 10 towards the center of the sub-filling component 25, and the connecting protrusion 254 is formed by protruding a part of the edge of the sub-filling component 25 along one side of the length direction of the skeleton 10 towards the direction away from the center of the sub-filling component 25. In some embodiments, the connecting groove 255 and the connecting protrusion 254 are in a trapezoidal structure, and the short side of the trapezoidal structure coincides with the edge of the sub-filling component 25.

[0124] Thus, the structures of the connecting groove 255 and the connecting protrusion 254 are adapted to facilitate the assembly between the sub-filling components 25. The width of the connecting groove 255 gradually decreases in the direction towards the edge of the corresponding sub-filling component 25, which can enable the connecting groove 255 to limit the connecting protrusion 254 in the length direction and width direction of the skeleton 10, enhancing the stability of the cooperation between the connecting protrusion 254 and the connecting groove 255.

[0125] According to some embodiments of the present invention, as Figure 13 and Figure 14 shown, the connecting grooves 255 and the connecting protrusions 254 are respectively multiple. The multiple connecting grooves 255 are arranged at intervals along the length direction of the corresponding sub-filling component 25, and the multiple connecting protrusions 254 correspond to the multiple connecting grooves 255 respectively. The length direction of the sub-filling component 25 is the same as the width direction of the skeleton 10. The multiple connecting grooves 255 and the multiple connecting protrusions 254 are arranged at intervals along the length direction of the sub-filling part on the corresponding edge of the sub-filling part, and the multiple connecting protrusions 254 and the multiple connecting grooves 255 correspond to each other one by one. Thus, the arrangement of the multiple connecting grooves 255 and the multiple connecting protrusions 254 at intervals can further improve the reliability of the cooperation between the sub-filling components 25, and the correspondence between the multiple connecting protrusions 254 and the multiple connecting grooves 255 can ensure the accuracy of the assembly between the sub-filling components 25.

[0126] According to some embodiments of the present utility model, as Figure 24 shown, the filling component 100 includes a second filling component 30; the skeleton 10 of the second filling component 30 is in a strip-shaped structure; the foaming layer 11 of the second filling component 30 covers the outer peripheral surface of the skeleton 10.

[0127] The skeleton 10 of the second filling component 30 has a length direction, a width direction, and a height direction. The skeleton 10 of the second filling component 30 extends along the length direction. The skeleton 10 of the second filling component 30 includes two side walls opposite to each other along the width direction and two side walls opposite to each other along the height direction. The skeleton 10 of the second filling component 30 is formed into a hollow strip-shaped structure. The foaming layer 11 of the second filling component 30 covers the outer peripheral surface of the skeleton 10 along the circumferential direction of the skeleton 10 of the second filling component. The materials, properties, and manufacturing processes of the skeleton 10 and the foaming layer 11 of the second filling component 30 are the same as those of the skeleton 10 and the foaming layer 11 of the first filling component 20.

[0128] Thus, the skeleton 10 of the second filling component 30 plays a role in supporting and bearing the foaming layer 11. The second filling component 30 is suitable for being assembled in a long strip-shaped closed or semi-closed space structure to improve the structural strength of the structure, enhance the anti-extrusion, anti-torsion, and anti-bending strengths of the structure, and enhance the overall performance of the structure.

[0129] According to some embodiments of the present utility model, as Figures 21 - 24 shown, it further includes: at least one second support structure 31, the second support structure 31 is provided on the skeleton 10, and the second support structure 31 protrudes from at least one side surface of the foaming layer 11 away from the skeleton 10.

[0130] When the second support structure 31 is provided on the outer surfaces of the two side walls of the skeleton 10 along the width direction, the second support structure 31 protrudes from the outer surface of the side wall of the skeleton 10 in a direction away from the center of the skeleton 10 along the width direction of the skeleton 10. When the second support structure 31 is provided on the outer surfaces of the two side walls of the skeleton 10 along the height direction, the second support structure 31 protrudes from the outer surface of the side wall of the skeleton 10 in a direction away from the center of the skeleton 10 along the height direction of the skeleton 10. The height of the second support structure 31 relative to the outer surface of the skeleton 10 is greater than the thickness of the foaming layer 11, that is, the second support structure 31 protrudes from the foaming layer 11. The height by which the second support structure 31 protrudes from at least one side surface of the foaming layer 11 away from the skeleton 10 is h, where h satisfies: 3 mm ≤ h ≤ 5 mm.

[0131] Thus, the setting of the second support structure 31 facilitates the assembly of the second filling component 30. The second support structure 31 can position the second filling component 30 in the width direction and the height direction of the framework 10 of the second filling component 30. The second support structure 31 is adapted to be in contact and abut against the inside of the assembly space of the second filling component 30. The setting of the second support structure 31 can make the framework 10 of the second support structure 31 located at the middle position of the corresponding assembly space after assembly. The second support structure 31 protruding from at least one side surface of the foaming layer 11 away from the framework 10 can keep a preset distance between the outer surface of the second filling component 30 and the inner wall of the assembly space, leaving space for the expansion of the foaming layer 11 and the flow of the anti-corrosion treatment solution.

[0132] According to some embodiments of the present invention, as Figure 22 shown, there are multiple second support structures 31. The multiple second support structures 31 include: at least one third sub-support structure 311 and at least one fourth sub-support structure 312. The third sub-support structure 311 is arranged at the first corner 32 of the framework 10, and the fourth sub-support structure 312 is arranged at the second corner 33 of the framework 10. The second corner 33 is opposite to the first corner 32.

[0133] The connection of adjacent side walls of the framework 10 of the second filling component 30 forms a corner. The first corner 32 and the second corner 33 are arranged opposite to each other along the diagonal of the framework 10. Both the third sub-support structure 311 and the fourth sub-support structure 312 include a first end and a second end. The first end extends along the width direction of the framework 10, and the first ends of the third sub-support structure 311 and the fourth sub-support structure 312 are respectively arranged on the outer surfaces of the two opposite side walls of the framework 10 along the height direction. The second end extends along the height direction of the framework 10, and the second ends of the third sub-support structure 311 and the fourth sub-support structure 312 are respectively arranged on the outer surfaces of the two opposite side walls of the framework 10 along the width direction.

[0134] Thus, the third sub-support structure 311 and the fourth sub-support structure 312 are arranged at the first corner 32 and the second corner 33 of the framework 10 to position the second filling component 30 in the width direction and the height direction of the framework 10 of the second filling component 30. The third sub-support structure 311 and the fourth sub-support structure 312 are in contact and abut against the corners of the inner wall of the assembly space of the second filling component 30, so that the outer surface of the second filling component 30 and the inner wall of the assembly space keep a preset distance.

[0135] According to some embodiments of the present invention, as Figures 22 - 24As shown, there are multiple third sub-support structures 311. The multiple third sub-support structures 311 are arranged at intervals along the length direction of the framework 10. Both ends of the third sub-support structure 311 extend to two surfaces of the framework 10 adjacent to the first corner 32 respectively; there are multiple fourth sub-support structures 312. The multiple fourth sub-support structures 312 are arranged at intervals along the length direction of the framework 10. Both ends of the fourth sub-support structure 312 extend to two surfaces of the framework 10 adjacent to the second corner 33 respectively.

[0136] The multiple third sub-support structures 311 are arranged at intervals along the length direction of the framework 10 at the first corner 32 of the framework 10, and the fourth sub-support structures 312 are arranged at intervals along the length direction of the framework 10 at the second corner 33 of the framework 10. One end of the first end and the second end of the third sub-support structure 311 are connected to form an L-shaped structure and are arranged at the first corner 32, and one end of the first end and the second end of the fourth sub-support structure 312 are connected to form an L-shaped structure and are arranged at the second corner 33. Thus, the arrangement of the multiple third sub-support structures 311 and the multiple fourth sub-support structures 312 can make the positioning effect of the second support structure 31 on the second filling component 30 more comprehensive and sufficient, realizing precise positioning during the assembly of the second filling component 30.

[0137] According to some embodiments of the present invention, as Figure 24 shown, the multiple third sub-support structures 311 and the multiple fourth sub-support structures 312 are arranged staggeredly along the length direction of the framework 10. That is, along the height direction of the framework 10, the projections of the multiple third sub-support structures 311 and the multiple fourth sub-support structures 312 are alternately distributed in sequence. Thus, while reducing the number of the third sub-support structures 311 and the fourth sub-support structures 312, it can ensure the positioning effect of the third sub-support structures 311 and the fourth sub-support structures 312 on the second filling component 30, and can reduce the production cost of the second filling component 30.

[0138] According to some embodiments of the present invention, as Figure 22 and Figure 24 shown, at least one first installation structure 34 is provided on the framework 10. In some embodiments, a plurality of first installation structures 34 are provided on the framework 10. The multiple first installation structures 34 are arranged on the outer surfaces of the two side walls of the framework 10 opposite to each other along the width direction, and the multiple first installation structures 34 are arranged at intervals along the length direction of the framework 10. Thus, the first installation structure 34 is used to fixedly install the second filling component 30 in the assembly space and fix the second filling component 30 at a preset position. The arrangement of the multiple first installation structures 34 can make the assembly of the second filling component 30 more stable and reliable.

[0139] According to some embodiments of the present invention, as Figure 24As shown, the first mounting structure 34 includes at least one of an embedded nut, a card slot, and a hollow column structure. The embedded nut, the card slot, and the hollow column structure all have the characteristics of simple processing, simple assembly, low production cost, and high connection strength. Thus, including one of the embedded nut, the card slot, and the hollow column structure in the first mounting structure 34 is beneficial to reducing the assembly difficulty and production cost of the second filling component 30, enhancing the practicability of the second filling component 30, and facilitating the application of the second filling component 30.

[0140] According to some embodiments of the present invention, such as Figure 24 As shown, the skeleton 10 is a hollow structure. The skeleton 10 of the second filling component 30 is a hollow frame 50 structure, and at least part of one side wall of the skeleton 10 in the width direction is a hollow structure. The skeleton 10 includes a plurality of first hollow structures, and the plurality of first hollow structures are arranged at intervals along the length direction of the skeleton 10 on one side wall of the skeleton 10 in the width direction. Thus, the skeleton 10 being a hollow structure can effectively reduce the mass of the skeleton 10, realize the lightweight design of the skeleton 10, can also reduce the material used for the skeleton 10, and the foaming layer 11 can also be arranged in a local area to reduce the production cost, thereby realizing the lightweight design of the second filling component 30 and reducing the production cost of the second filling component 30.

[0141] According to some embodiments of the present invention, it further includes: a heat insulation layer, and the heat insulation layer is provided on at least part of the surface of the foaming layer 11 away from the skeleton 10.

[0142] During the assembly process of the second filling component 30, the connection with other components often uses a welding process for connection. The high temperature generated during welding may cause ablation damage to the second filling component 30. By providing a heat insulation layer on at least part of the surface of the foaming layer 11 away from the skeleton 10, it can effectively block the local instantaneous high-temperature heat conduction above 2000K at the welding point generated during welding, make the temperature on the surface of the second filling component 30 lower than the melting points of the skeleton 10 and the foaming layer 11, form a protective effect on the second filling component 30, and extend the service life of the second filling component 30.

[0143] According to some embodiments of the present utility model, the heat insulation layer is mica sheet, aerogel or heat insulation coating. Mica sheet has high insulation strength, large resistance, low dielectric loss, excellent dielectric properties such as arc resistance and corona resistance, and is hard in texture, high in mechanical strength, resistant to high temperature and rapid temperature change, and has good physical and chemical properties such as acid and alkali resistance. Aerogel has properties such as high temperature resistance, low radiative heat conduction, and good thermal stability, and the preparation method of aerogel is simple, with strong controllability, light weight, and low production cost. The heat insulation coating has the characteristics of heat insulation, waterproof, rust-proof, anti-corrosion, short construction period, and quick effect. Thus, the heat insulation layer being mica sheet, aerogel or heat insulation coating can ensure the heat insulation effect of the heat insulation layer, enhance the protection of the heat insulation layer for the second filling component 30, improve the reliability of the heat insulation layer, and reduce the production cost of the heat insulation layer.

[0144] According to some embodiments of the present utility model, the heat insulation layer is bonded or sprayed on at least part of the surface of the foaming layer 11 away from the framework 10. The foaming layer 11 needs to foam and expand in a continuous high-temperature environment, and when the second filling component 30 is in a continuous high-temperature environment, the setting that the heat insulation layer is bonded or sprayed on at least part of the surface of the foaming layer 11 away from the framework 10 will not affect the rise of the overall temperature of the second filling component 30, and the foaming layer 11 covered with the heat insulation layer can still normally foam and expand to fill the gap between the framework 10 and the assembly space, without affecting the local strengthening performance of the second filling component 30. Thus, the heat insulation layer being bonded or sprayed on at least part of the surface of the foaming layer 11 away from the framework 10 will not affect the foaming and expanding process of the foaming layer 11 in the second filling part, and can ensure that the heat preservation ability, collision energy absorption ability, local collision deformation dispersion ability, etc. of the second filling part are not affected.

[0145] According to some embodiments of the present utility model, as Figure 24 shown, the foaming layer 11 is formed by secondary injection molding on the framework 10. Through the secondary injection molding process, the foaming layer 11 and the framework 10 can form an integral structure. The foaming layer 11 being formed by secondary injection molding on the framework 10 can improve the connection strength between the foaming layer 11 and the framework 10, improve the durability of the filling component 100, and the automation degree of the secondary injection molding process is high, which can realize automated production and improve the production efficiency of the filling component 100.

[0146] Alternatively, the foaming layer 11 is bonded or clamped to the framework 10. The foaming layer 11 is fixedly connected to the framework 10 by bonding or clamping. The assembly method of bonding or clamping is simple, which can simplify the assembly steps between the framework 10 and the foaming layer 11 and reduce the assembly cost of the filling component 100.

[0147] According to some embodiments of the present utility model, the material of the framework 10 is nylon or fiber-reinforced resin composite material. Nylon has high mechanical strength, with relatively high strength and good toughness. Nylon still has stable performance in high-temperature environments, is easy to process and form, and is suitable for various manufacturing occasions. Fiber-reinforced resin composite materials have properties such as high strength, high modulus, lightweight, durability, and good formability. They can withstand high pressure and high load, have excellent impact resistance, are not easily deformed, and fiber-reinforced resin composite materials have a lighter weight, are easy to process, and can meet various application requirements. The framework 10 can be manufactured by processes such as molding, extrusion, and machining.

[0148] Thus, the framework 10 being made of nylon or fiber-reinforced resin composite material can effectively enhance the structural strength of the framework 10, improve the impact resistance of the framework 10, reduce the processing difficulty of the framework 10, improve the overall performance of the framework 10, enable the framework 10 to have characteristics such as being resistant to high temperatures above 200°C, high strength, and high stiffness, and further improve the overall performance of the filling component 100 and extend the service life of the filling component 100.

[0149] The material of the foaming layer 11 is epoxy glue, polyurethane, butyl rubber, etc. and is admixed with certain foaming additives, and can expand and foam under specific high-temperature baking conditions, with an expansion ratio between 100% - 3000%. Epoxy glue has excellent physical and mechanical properties, electrical insulation properties, chemical corrosion resistance properties, heat resistance, and bonding properties. Polyurethane has excellent mechanical properties, good chemical corrosion resistance, good thermal insulation and heat preservation properties, good seismic resistance, and excellent oil resistance and aging resistance. Butyl rubber has excellent airtightness, good heat resistance and aging resistance, good electrical insulation, and damping properties. In some embodiments, the foaming layer 11 is realized by injecting a filler, and the filler has a certain expansion rate and forms a closed-cell foam structure after curing.

[0150] The tray 200 according to the second aspect embodiment of the present utility model, as Figure 3 shown, includes: a tray body 40 and a filling component 100. The filling component 100 is the filling component 100 according to the above first aspect embodiment of the present utility model, and the filling component 100 is arranged in the tray body 40. An assembly space for the filling component 100 is defined in the tray body 40, and the filling component 100 is assembled in the assembly space.

[0151] According to the pallet 200 of the embodiment of the present utility model, a filling component 100 is arranged in the pallet body 40. The arrangement of the filling component 100 can endow the pallet body 40 with good heat preservation ability, collision energy absorption ability, local collision deformation dispersion ability and NVH performance, enhance the heat preservation performance and mechanical performance of the pallet body 40, and improve the overall anti-extrusion deformation ability, anti-torsion strength, anti-bending stiffness of the pallet 200 and the anti-fatigue strength at the connection position of the pallet 200.

[0152] According to some embodiments of the present utility model, as Figure 3 and Figure 20 shown, the pallet body 40 includes: a frame 50 and a bottom plate assembly 60. The frame 50 includes a plurality of beam structures 51. The bottom plate assembly 60 includes a bottom plate 61 and a bottom guard plate 62. The bottom plate 61 is arranged at the bottom of the frame 50, and the bottom guard plate 62 is arranged below the bottom plate 61; the filling component 100 includes at least one of a first filling component 20 and a second filling component 30. The first filling component 20 is arranged between the bottom plate 61 and the bottom guard plate 62, and the second filling component 30 is arranged in at least one of the plurality of beam structures 51.

[0153] There is a certain interval between the bottom plate 61 and the bottom guard plate 62. The outer peripheral edges of the bottom plate 61 and the bottom guard plate 62 are connected. The space defined between the bottom plate 61 and the bottom guard plate 62 is the assembly space of the first filling component 20. The first filling component 20 is located entirely at the central position between the bottom plate 61 and the bottom guard plate 62. The upper end face of the first support structure 21 along the thickness direction of the framework 10 abuts against one side surface of the bottom plate 61 adjacent to the bottom guard plate 62, and the lower end face of the first support structure 21 along the thickness direction of the framework 10 abuts against one side surface of the bottom guard plate 62 adjacent to the bottom plate 61. Two foaming layers 11 are respectively arranged between the framework 10 of the first filling component 20 and the bottom plate 61 and between the framework 10 of the first filling component 20 and the bottom guard plate 62. After the foaming layer 11 foams and expands, it can fill the space between the bottom plate 61 and the bottom guard plate 62.

[0154] The beam structure 51 can be a plurality of profile parts with closed or semi-closed cavity cross-sections. The plurality of beam structures 51 are connected to each other to form the frame 50. The space defined in the beam structure 51 is the assembly space of the second filling component 30. The second filling component 30 is located entirely at the central position of the beam structure 51. One side surface of the second support structure 31 away from the framework 10 of the second filling component 30 abuts against the inner wall surface of the beam structure 51. The foaming layer 11 is arranged between the framework 10 of the second filling component 30 and the inner wall surface of the beam structure 51. After the foaming layer 11 expands, it can fill the gap between the framework 10 of the second filling component 30 and the inner wall surface of the beam structure 51.

[0155] Thus, the frame 50 is disposed around the outer peripheral side of the bottom plate assembly 60. The frame 50 and the bottom plate assembly 60 jointly define a space for installing the battery module 71. When the battery module 71 is assembled in the tray 200, the bottom of the battery module 71 contacts the bottom plate 61. The tray body 40 bears the battery module 71. The bottom plate 61 can provide a stable bearing and installation position function for the battery module 71. The bottom guard plate 62 can provide a protective effect for the battery module 71 at the bottom. The structural design of the bottom plate 61, the first filling component 20 and the bottom guard plate 62 can enhance the heat preservation performance and impact resistance of the bottom of the tray 200. A plurality of beam structures 51 are sequentially connected to enclose a closed space of the frame 50, and cooperate with the bottom plate assembly 60 to jointly provide a receiving space for the battery module 71. The frame 50 can provide a protective effect for the battery module 71 on the peripheral sides of the battery module 71, and enhance the structural strength of the peripheral sides of the tray 200. The second filling component 30 is arranged in the frame 50, which can improve the overall heat preservation performance and impact resistance of the tray 200, and improve the overall reliability of the tray 200.

[0156] According to some embodiments of the present invention, as Figures 15 - 19 shown, a plurality of second mounting structures 63 are provided on the bottom guard plate 62, and the first filling component 20 is mounted on the bottom guard plate 62 through the plurality of second mounting structures 63. The plurality of second mounting structures 63 and the plurality of positioning holes 24 on the first filling component 20 are opposite to each other along the thickness direction of the framework 10 of the first filling component 20. The second mounting structure 63 is adapted to cooperate with the positioning hole 24, and the second mounting structure 63 is fitted in the positioning hole 24 to fixedly mount the first filling component 20 on the bottom guard plate 62. Thus, the first filling component 20 is mounted on the bottom guard plate 62 through the cooperation between the second mounting structure 63 and the positioning hole 24. The second mounting structure 63 can limit the first filling component 20, and can improve the assembly reliability and stability of the first filling component 20.

[0157] According to some embodiments of the present invention, as Figures 15 - 17 shown, the second mounting structure 63 includes a plurality of buckles 631 arranged at intervals. One end of the plurality of buckles 631 adjacent to the first filling component 20 has a buckling portion 632. The buckling portions 632 of the plurality of buckles 631 are located on one side of the plurality of buckles 631 facing away from each other. The buckling portions 632 of the plurality of buckles 631 pass through the corresponding positioning holes 24 of the first filling component 20 and are adapted to abut against the surface of the first filling component 20 adjacent to the bottom plate 61.

[0158] The second mounting structure 63 includes a buckle 631 and a connecting portion 633. One end of the buckle 631 is connected to the connecting portion 633. The other end of the buckle 631 extends toward the side where the framework 10 is located in the thickness direction of the framework 10. The buckling portion 632 of the buckle 631 is provided at the other end of the buckle 631. The buckling portion 632 protrudes from the outer surface of the buckle 631 toward the direction away from the center of the second mounting structure 63. A plurality of buckles 631 are arranged at intervals, and the buckle 631 can undergo a certain recoverable deformation toward the center of the second mounting structure 63 to facilitate the assembly of the second mounting structure 63. The connecting portion 633 of the second mounting structure 63 is fixed to the bottom guard plate 62, and the other end of the buckle 631 passes through the positioning hole 24 of the first filler to fix the first filler.

[0159] Thus, the plurality of buckles 631 are arranged at intervals, which facilitates the buckles 631 to undergo a certain deformation toward the center of the second mounting structure 63 when the second mounting structure 63 is assembled into the positioning hole 24, and return to the original state after the buckling portion 632 passes through the positioning hole 24, so as to facilitate the assembly of the second mounting structure 63, and also facilitate the buckling portion 632 of the buckle 631 to abut against the surface of the first filler assembly 20 adjacent to the bottom plate 61, so that the second mounting structure 63 plays a limiting role on the first filler assembly 20 in the thickness direction of the framework 10.

[0160] According to some embodiments of the present invention, as Figure 18 and Figure 19 shown, it further includes: a plurality of first fasteners 64, and the first fasteners 64 pass through the corresponding positioning holes 24 of the first filler assembly 20 and cooperate with the corresponding second mounting structure 63. Thus, the plurality of first fasteners 64 pass through the positioning holes 24 and cooperate with the second mounting structure 63 to fix the first filler assembly 20 on the bottom guard plate 62.

[0161] According to some embodiments of the present invention, as Figure 19 shown, the first fastener 64 is a screw or a rivet. Screws and rivets both have the advantages of simple structure, convenient disassembly and assembly, high connection strength, low production cost and small connection deformation. Thus, the first fastener 64 being a screw or a rivet can effectively reduce the assembly cost and assembly difficulty of the first filler assembly 20, and improve the connection strength between the first filler assembly 20 and the bottom guard plate 62, enhancing the assembly reliability and stability of the first filler assembly 20.

[0162] According to some embodiments of the present invention, as Figure 2 and Figure 3As shown, the bottom plate 61 is a heat exchange plate. The bottom plate 61 is adapted to carry the battery module 71, and the bottom plate 61 being a heat exchange plate can conduct heat exchange with the battery module 71. Thus, the bottom plate 61 being a heat exchange plate can adjust the temperature of the battery module 71, prevent a large amount of heat from accumulating in a narrow space, keep the temperature of the battery module 71 within a suitable temperature range at all times, thereby maintaining the optimal working state of the battery module 71, preventing the battery module 71 from overheating and causing rapid decay, and prolonging the service life of the battery module 71.

[0163] According to some embodiments of the present invention, as Figure 22 shown, at least one mounting hole 52 is formed in at least one of the plurality of beam structures 51; the tray 200 further includes: at least one second fastener 511, and the second fastener 511 passes through the mounting hole 52 and cooperates with the first mounting structure 34 of the second filling component 30. The mounting hole 52 penetrates the side wall of the beam structure 51, and the plurality of mounting holes 52 are arranged at intervals along the length direction of the framework 10 of the second filling component 30. The mounting holes 52 correspond to the first mounting structures 34 of the second filling component 30 one by one, and the second fastener 511 is inserted into the mounting hole 52 and cooperates with the first mounting structure 34. Thus, the arrangement of the mounting holes 52 is used for the installation and positioning of the second filling component 30 during the assembly process. The arrangement of the plurality of mounting holes 52 can improve the positioning accuracy and assembly firmness of the second filling component 30. The second fastener 511 passes through the mounting hole 52 and cooperates with the first mounting structure 34 of the second filling component 30 to fixedly install the second filling component 30 in the beam structure 51 and make the second filling component 30 assembled at a preset position in the beam structure 51, ensuring the assembly reliability and stability of the second filling component 30.

[0164] According to some embodiments of the present invention, as Figure 20 shown, the plurality of beam structures 51 include: a cross beam 53, a longitudinal beam 54, an intermediate cross beam 55, a first corner beam 56, and a second corner beam 57. The cross beam 53 includes a first cross beam 531 and a second cross beam 532, and the first cross beam 531 and the second cross beam 532 are arranged at intervals; the longitudinal beam 54 includes a first longitudinal beam 541 and a second longitudinal beam 542, and the first longitudinal beam 541 and the second longitudinal beam 542 are respectively connected between the two ends of the first cross beam 531 and the second cross beam 532; the intermediate cross beam 55 is connected between the first longitudinal beam 541 and the second longitudinal beam 542, and the intermediate cross beam 55 is located between the first cross beam 531 and the second cross beam 532; the first longitudinal beam 541 and the first cross beam 531 are connected by the first corner beam 56, and the second longitudinal beam 542 and the first cross beam 531 are connected by the second corner beam 57; there are a plurality of second filling components 30, and the plurality of second filling components 30 are respectively arranged in the first cross beam 531, the second cross beam 532, the first longitudinal beam 541, the second longitudinal beam 542, the intermediate cross beam 55, the first corner beam 56, and the second corner beam 57.

[0165] The tray body 40 includes a first direction A, a second direction B, and a third direction C. The cross beam 53 and the intermediate cross beam 55 extend along the first direction A. The first cross beam 531, the intermediate cross beam 55, and the second cross beam 532 are arranged at intervals along the second direction B. The intermediate cross beam 55 is arranged between the first cross beam 531 and the second cross beam 532 along the second direction B. The longitudinal beam 54 extends along the second direction B. The first longitudinal beam 541 and the second longitudinal beam 542 are arranged at intervals along the first direction A. One end of the intermediate cross beam 55 along the first direction A is connected to the middle part of the first longitudinal beam 541 along the second direction B, and the other end of the intermediate cross beam 55 along the first direction A is connected to the middle part of the second longitudinal beam 542 along the second direction B. The first corner beam 56 and the second corner beam 57 are respectively connected to both ends of the first cross beam 531 along the first direction A. One end of the first corner beam 56 is connected to one end of the first cross beam 531 along the first direction A, and the other end of the first corner beam 56 is connected to one end of the first longitudinal beam 541 along the second direction B adjacent to the first cross beam 531. One end of the second corner beam 57 is connected to the other end of the first cross beam 531 along the first direction A, and the other end of the second corner beam 57 is connected to one end of the second longitudinal beam 542 along the second direction B adjacent to the first cross beam 531. A second filling component 30 is provided in each of the plurality of beam structures 51. One end of the second cross beam 532 along the first direction A is connected to the other end of the first longitudinal beam 541 along the second direction B, and the other end of the second cross beam 532 along the first direction A is connected to the other end of the second longitudinal beam 542 along the second direction B.

[0166] The beam structure 51 can be processed by processes such as extrusion, rolling, and machining. The material of the beam structure 51 is high-strength steel or aluminum alloy, etc. The connection process between the plurality of beam structures 51 can be welding, riveting, bonding, etc. or a combination of the above processes.

[0167] Thus, after the first cross beam 531, the second cross beam 532, the first longitudinal beam 541, the second longitudinal beam 542, the first corner beam 56, and the second corner beam 57 are sequentially connected, a closed frame 50 structure is formed. The intermediate cross beam 55 is used to strengthen the middle structure of the frame 50. The plurality of second filling components 30 are respectively arranged in the first cross beam 531, the second cross beam 532, the first longitudinal beam 541, the second longitudinal beam 542, the intermediate cross beam 55, the first corner beam 56, and the second corner beam 57, which can effectively enhance the structural strength of the beam structure 51, improve the mechanical properties of the frame 50 of the tray 200, enhance the anti-extrusion deformation strength and anti-bending and torsion strength of the beam structure 51, etc., and optimize the overall performance of the tray 200.

[0168] According to some embodiments of the present invention, such as Figure 20 、 Figure 25 and Figure 26As shown, the second filling component 30 includes a corner filling component 100, and the corner filling component 100 includes: a first corner filling component 35. One end of the first corner filling component 35 is fitted in the longitudinal beam 54, and the other end of the first corner filling component 35 is fitted in the second cross beam 532.

[0169] One end of the first corner filling component 35 extends along the first direction A, and the other end of the first corner filling component 35 extends along the second direction B, that is, the first corner 32 component has an L-shaped structure. The corner filling component 100 includes two first corner filling components 35. Among them, one end of a first corner filling component 35 is fitted in one end of the second cross beam 532 along the first direction A, and the other end of this first corner filling component 35 is fitted in the other end of the first longitudinal beam 541 along the second direction B; the other end of a first corner filling component 35 is fitted in the other end of the second cross beam 532 along the first direction A, and the other end of this first corner filling component 35 is fitted in the other end of the second longitudinal beam 542 along the second direction B. Thus, the first corner filling component 35 can improve the fatigue strength at the joints of the second cross beam 532 with the first longitudinal beam 541 and the second longitudinal beam 542, and enhance the mechanical strength at the joints of the second cross beam 532 with the first longitudinal beam 541 and the second longitudinal beam 542.

[0170] According to some embodiments of the present invention, as Figure 20 , Figures 27 - 29 shown, the corner filling component 100 further includes: a second corner filling component 36. One end of the second corner filling component 36 is fitted in the longitudinal beam 54 or the first cross beam 531, and the other end of the second corner filling component 36 is fitted in the first corner beam 56 or the second corner beam 57.

[0171] The second corner filling component 36 includes: a first sub-corner filling component 361 and a second sub-corner filling component 362. One end of the first sub-corner filling component 361 extends along the first direction A, and the other end of the first sub-corner filling component 361 extends obliquely. One end of the second sub-corner filling component 362 extends along the second direction B, and the other end of the second sub-corner filling component 362 extends obliquely. The corner filling component 100 includes two second corner filling components 36. Among them, one end of the first sub-corner filling component 361 in one second corner filling component 36 is fitted inside one end of the first cross beam 531 along the first direction A, and the other end is fitted inside the first corner beam 56. One end of the second sub-corner filling component 362 in this second corner filling component 36 is fitted inside one end of the first longitudinal beam 541 along the second direction B, and the other end is fitted inside the first corner beam 56. One end of the first sub-corner filling component 361 in the other second corner filling component 36 is fitted inside the other end of the first cross beam 531 along the first direction A, and the other end is fitted inside the second corner beam 57. One end of the second sub-corner filling component 362 in this second corner filling component 36 is fitted inside one end of the second longitudinal beam 542 along the second direction B, and the other end is fitted inside the second corner beam 57.

[0172] Thus, the second corner filling component 36 can improve the fatigue strength of the connection between the first cross beam 531, the first longitudinal beam 541, the second longitudinal beam 542, the first corner beam 56 and the second corner beam 57, and enhance the mechanical strength of the connection between the first cross beam 531, the first longitudinal beam 541, the second longitudinal beam 542, the first corner beam 56 and the second corner beam 57.

[0173] According to some embodiments of the present invention, as Figure 30 shown, the corner filling component 100 is connected to the second filling component 30 in the adjacent cross beam 53 or longitudinal beam 54 through at least one connection structure 37. The connection structure 37 is arranged at the end of the corner filling component 100 and the filling component 100 arranged in the cross beam 53 or longitudinal beam 54. Taking the first corner beam 56 and the first cross beam 531 as an example, one end of the first sub-corner filling component 361 in the second corner filling component 36 located in the first corner beam 56 is adjacent to one end of the second filling component 30 in the first cross beam 531 adjacent to the first corner beam 56. The connection structure 37 is arranged between the ends of the two filling components 100 in contact to connect the two filling components 100 into one body. Thus, the arrangement of the connection structure 37 is used to enable the corner filling component 100 and the filling component 100 in the adjacent cross beam 53 or longitudinal beam 54 to be connected to each other as a whole when the corner beam and the cross beam 53 or longitudinal beam 54 are combined, which is more beneficial to enhancing the mechanical strength of the corner of the frame 50.

[0174] According to some embodiments of the present invention, as Figure 30As shown, the connecting structure 37 includes a connecting hole 371 and a connecting shaft 372. The connecting hole 371 is formed in one of the corner filling component 100 and the second filling component 30 in the adjacent cross beam 53 or longitudinal beam 54. The connecting shaft 372 is on the other of the corner filling component 100 and the second filling component 30 in the adjacent cross beam 53 or longitudinal beam 54, and the connecting shaft 372 is fitted in the connecting hole 371.

[0175] Taking the first corner beam 56 and the first cross beam 531 as an example, a connecting hole 371 is formed at one end of the first sub-corner filling component 361 in the second corner filling component 36 in the first corner beam 56. The connecting hole 371 is formed by a part of the end face recessing towards the inside of the first sub-corner filling component 361. A connecting shaft 372 is formed at one end of the second filling component 30 in the first cross beam 531. A part of the end face of the connecting shaft 372 protrudes towards one side of the first sub-corner filling component 361. The connecting shaft 372 at one end of the second filling component 30 in the first cross beam 531 is fitted in the connecting hole 371 at one end of the first sub-corner filling component 361.

[0176] Thus, the arrangement of the connecting hole 371 and the connecting shaft 372 can realize the connection between the corner filling component 100 and the second filling component 30 in the adjacent cross beam 53 or longitudinal beam 54, enabling the two filling components 100 to be clamped and connected into one body, thereby strengthening the structural strength of the frame 50.

[0177] According to some embodiments of the present invention, as Figure 20 shown, the plurality of beam structures 51 further includes a plurality of mounting beams 58 and a plurality of lugs 59. The plurality of mounting beams 58 are respectively arranged on the sides of the first longitudinal beam 541 and the second longitudinal beam 542 away from each other. The plurality of lugs 59 are respectively arranged on the sides of the first cross beam 531 and the second cross beam 532 away from each other. The second filling components 30 are respectively arranged in the plurality of mounting beams 58 and the plurality of lugs 59.

[0178] The plurality of mounting beams 58 include a first mounting beam 58 and a second mounting beam 58. The mounting beams 58 extend along the second direction B. The first mounting beam 58 is connected to the side of the first longitudinal beam 541 away from the second longitudinal beam 542 along the first direction A. The second mounting beam 58 is connected to the side of the second longitudinal beam 542 away from the first longitudinal beam 541 along the first direction A. The plurality of lugs 59 are respectively arranged on the sides of the first cross beam 531 and the second cross beam 532 away from each other along the second direction B, and the plurality of lugs 59 are arranged at intervals along the first direction A on the first cross beam 531 or the second cross beam 532.

[0179] Therefore, the provision of the plurality of mounting beams 58 and the plurality of lifting lugs 59 is for connecting the tray 200 to an external system, facilitating the assembly of the tray 200. The second filling components 30 are respectively provided in the plurality of mounting beams 58 and the plurality of lifting lugs 59, which can enhance the structural strength of the plurality of mounting beams 58 and the plurality of lifting lugs 59 and improve the stability of the connection between the tray 200 and the external system.

[0180] According to some embodiments of the present invention, as Figure 20 shown, at least one of the plurality of beam structures 51 is formed with a plurality of cavities, and at least one of the plurality of cavities is provided with a second filling component 30. In some embodiments, two cavities are formed in the plurality of beam structures 51, the two cavities are spaced apart along the third direction C, and the second filling components 30 are provided in both of the two cavities. Thereby, the structural strength of the beam structure 51 can be further improved, the mechanical properties of the beam structure 51 can be enhanced, and the anti-extrusion deformation performance of the beam structure 51 can be enhanced.

[0181] The manufacturing process of the tray 200 is as follows:

[0182] First, the single-piece parts such as the frame 50, the bottom plate assembly 60, the mounting beams 58, and the lifting lugs 59 of the tray 200 are processed. Synchronously, the skeleton 10 of the filling component 100 is processed. A foaming layer 11 is coated on the skeleton 10 of the filling component 100 to complete the processing of the filling component 100. The filling component 100 is assembled into each profile component such as the frame 50, the bottom plate assembly 60, the mounting beams 58, and the lifting lugs 59, and the various components of the tray 200 with the filling component 100 installed are assembled into one body. After the installation parts that need to be connected to each other in the filling components 100 in different structures are combined, a welding process is carried out. Then, the welded tray 200 is placed in a surface treatment solution for treatment, so that the surface treatment solution flows in the gaps between the skeleton 10 and the inner walls of the structures such as the frame 50, the bottom plate assembly 60, the mounting beams 58, and the lifting lugs 59. After the treatment is completed, the tray 200 is taken out and the internal solution is drained. The tray 200 after the surface treatment process is placed in a high-temperature baking oven for baking, so that the baking conditions meet the foaming conditions of the foaming layer 11 in the filling component 100. After the foaming layer 11 foams and expands, it becomes a closed-cell foam, completely filling the gaps between the skeleton 10 and the inner walls of the structures such as the frame 50, the bottom plate assembly 60, the mounting beams 58, and the lifting lugs 59. Finally, the tray 200 comes off the production line, and the situation where the foaming layer 11 bulges and overflows at some hole positions of the tray 200 is locally treated, and the quality of the tray 200 is inspected. In some embodiments, some trays 200 do not need to go through the surface treatment process steps. Some of the profile components in the trays 200 are made of single-piece sheet materials rolled into closed-section profiles. Without affecting the profile rolling process, the installation processes of the profile components such as the frame 50, the bottom plate assembly 60, the mounting beams 58, and the lifting lugs 59 can be carried out during the processing process.

[0183] The battery pack 300 according to the third aspect embodiment of the present utility model includes the tray 200 according to the second aspect embodiment of the present utility model above.

[0184] Combined Figures 1 - 3 , the battery pack 300 includes a tray 200, an upper cover 70, and a battery module 71. The battery module 71 is installed in a closed space jointly formed by the upper cover 70 and the battery tray 200.

[0185] For the battery pack 300 according to the embodiment of the present utility model, by using the tray 200 described in the above embodiment, the tray 200 can provide good heat preservation and anti-collision performance for the battery pack 300, enhance the protection of the tray 200 for the battery module 71, improve the overall mechanical strength of the battery pack 300, enhance the safety of the battery pack 300, and extend the service life of the battery pack 300.

[0186] The vehicle according to the fourth aspect embodiment of the present utility model includes the battery pack 300 according to the third aspect embodiment of the present utility model above.

[0187] For the vehicle according to the embodiment of the present utility model, by using the battery pack 300 described in the above embodiment, the service life of the battery pack 300 can be extended, thereby extending the service life of the vehicle, enhancing the comprehensive performance and safety performance of the vehicle, and reducing the after-sales cost of the vehicle.

[0188] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0189] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more. In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. In the description of the present utility model, the first feature being "above", "above" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0190] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

Claims

1. A filling component, characterized in that: include: skeleton; at least one foam layer, the foam layer covering at least a portion of the outer surface of the skeleton; A heat insulating layer is provided on at least a portion of the surface of the foaming layer away from the skeleton.

2. The filling assembly according to claim 1, characterized in that The filling assembly includes a first filling assembly; The skeleton of the first filling component is a plate-like structure; The first filling component has two foaming layers, and the two foaming layers respectively cover the two side surfaces of the skeleton in the thickness direction.

3. The filling assembly according to claim 2, characterized in that: Further including: At least one first supporting structure, wherein the first supporting structure is arranged on the frame, and the first supporting structure protrudes from a side surface of at least one of the foaming layers away from the frame.

4. The filling assembly according to claim 3, characterized in that: There are multiple first supporting structures, and the multiple first supporting structures include: At least one first sub-support structure, the first sub-support structure being arranged on at least one side surface of the skeleton in the thickness direction; At least one second sub-support structure, wherein the second sub-support structure is disposed on a side surface of the frame, and a portion of the second sub-support structure extends to at least one side surface of the frame in a thickness direction.

5. The filling assembly according to claim 4, characterized in that There are a plurality of the first sub-support structures, and the plurality of the first sub-support structures are arranged in an array on both side surfaces of the frame in the thickness direction; There are multiple second sub-support structures, which are arranged at intervals along the circumference of the skeleton, and two ends of the second sub-support structures extend to both side surfaces of the skeleton in the thickness direction respectively.

6. The filling assembly according to claim 3, characterized in that: The first supporting structure is a cross-shaped structure, a cross-shaped structure, a wave-shaped structure or a polygonal structure.

7. The filling assembly according to claim 3, characterized in that: The height of the first supporting structure protruding from the surface of at least one side of the foaming layer away from the skeleton is h, wherein h satisfies: 3mm≤h≤5mm.

8. The filling assembly according to claim 2, characterized in that: A plurality of through holes are formed on the skeleton, and the two foaming layers are connected into one body through the plurality of through holes; and / or A plurality of protrusions are provided on at least one side surface of the skeleton in the thickness direction, and the foaming layer covers the outer surfaces of the plurality of protrusions.

9. The filling assembly according to claim 3, characterized in that: The first supporting structure and the frame are an integral structure; or The first supporting structure is bonded or clamped to the frame.

10. The filling assembly according to claim 2, characterized in that A plurality of positioning holes are formed on the edge of the first filling component, and the plurality of positioning holes are arranged at intervals along the circumference of the first filling component.

11. The filling assembly according to claim 1, characterized in that There are multiple skeletons and multiple foaming layers, each of which covers at least a portion of the outer surface of each skeleton. The skeletons and multiple foaming layers constitute multiple sub-filling components, respectively, and the sub-filling components are suitable for being detachably connected.

12. The filling assembly according to claim 11, characterized in that At least one connecting groove is formed on one of the multiple sub-filling components, and at least one connecting protrusion is provided on another one of the multiple sub-filling components. The connecting protrusion is suitable for fitting in the connecting groove to realize detachable connection of the multiple sub-filling components.

13. The filling assembly according to claim 12, characterized in that The connection groove penetrates the corresponding sub-filling component along the thickness direction of the frame, and the width of the connection groove gradually decreases along the direction toward the edge of the corresponding sub-filling component; The shape of the connecting protrusion matches the shape of the connecting groove.

14. The filling assembly according to claim 12, characterized in that There are a plurality of connection grooves and a plurality of connection protrusions, and the plurality of connection grooves are arranged at intervals along the length direction of the corresponding sub-filling component, and the plurality of connection protrusions correspond to the plurality of connection grooves, respectively.

15. The filling assembly according to claim 1, characterized in that The filling assembly includes a second filling assembly; The skeleton of the second filling component is a long strip structure; The foaming layer of the second filling component covers the outer peripheral surface of the skeleton.

16. The filling assembly according to claim 15, characterized in that Further including: At least one second supporting structure, wherein the second supporting structure is disposed on the frame, and the second supporting structure protrudes from a surface of at least one side of the foaming layer away from the frame.

17. The filling assembly according to claim 16, characterized in that There are multiple second supporting structures, and the multiple second supporting structures include: at least one third sub-support structure, the third sub-support structure being disposed at a first corner of the frame; At least one fourth sub-support structure, wherein the fourth sub-support structure is disposed at a second corner of the frame, and the second corner is opposite to the first corner.

18. The filling assembly according to claim 17, characterized in that There are a plurality of third sub-support structures, and the plurality of third sub-support structures are arranged at intervals along the length direction of the frame, and two ends of the third sub-support structure extend to two surfaces of the frame adjacent to the first corner respectively; There are multiple fourth sub-support structures, and the multiple fourth sub-support structures are arranged at intervals along the length direction of the frame. Both ends of the fourth sub-support structure extend to two surfaces of the frame adjacent to the second corner respectively.

19. The filling assembly according to claim 18, characterized in that The plurality of third sub-support structures and the plurality of fourth sub-support structures are arranged in a staggered manner along the length direction of the skeleton.

20. The filling assembly according to claim 15, characterized in that At least one first mounting structure is provided on the frame.

21. The filling assembly according to claim 20, characterized in that The first mounting structure includes at least one of an embedded nut, a slot and a hollow column structure.

22. The filling assembly according to claim 14, characterized in that The skeleton is a hollow structure.

23. The filling assembly according to claim 1, characterized in that The heat insulation layer is a mica sheet, an aerogel or a heat insulation coating.

24. The filling assembly according to claim 1, characterized in that The heat insulation layer is bonded or sprayed onto at least a portion of the surface of the foaming layer away from the frame.

25. The filling assembly according to any one of claims 1 to 24, characterized in that The foaming layer is secondary injection molded on the frame; or The foaming layer is bonded or clamped to the frame.

26. The filling assembly according to any one of claims 1 to 24, characterized in that The material of the frame is nylon or fiber-reinforced resin composite material.

27. A pallet, characterized in that: include: Tray body; A filling assembly, wherein the filling assembly is the filling assembly according to any one of claims 1-26, and the filling assembly is arranged in the tray body.

28. The pallet according to claim 27, characterized in that The tray body comprises: a frame comprising a plurality of beam structures; A bottom plate assembly, the bottom plate assembly comprising a bottom plate and a bottom guard plate, the bottom plate is arranged at the bottom of the frame, and the bottom guard plate is arranged below the bottom plate; The filling assembly includes at least one of a first filling assembly and a second filling assembly, wherein the first filling assembly is arranged between the bottom plate and the bottom guard plate, and the second filling assembly is arranged in at least one of the plurality of beam structures.

29. The pallet according to claim 28, characterized in that The bottom guard plate is provided with a plurality of second mounting structures, and the first filling assembly is mounted on the bottom guard plate through the plurality of second mounting structures.

30. The pallet according to claim 29, characterized in that The second mounting structure includes a plurality of clips arranged at intervals, and one end of the plurality of clips adjacent to the first filling component has a clip portion, the clip portions of the plurality of clips are located on a side of the plurality of clips away from each other, and the clip portions of the plurality of clips pass through the positioning holes corresponding to the first filling component and are suitable for stopping against a surface on one side of the first filling component adjacent to the base plate.

31. The pallet according to claim 29, characterized in that Further including: A plurality of first fasteners, wherein the first fasteners pass through corresponding positioning holes of the first filling component and cooperate with the corresponding second mounting structure.

32. The pallet according to claim 31, characterized in that The first fastener is a screw or a rivet.

33. The pallet according to claim 28, characterized in that The bottom plate is a heat exchange plate.

34. The pallet according to claim 28, characterized in that At least one of the plurality of beam structures is formed with at least one mounting hole; The tray further comprises: At least one second fastener, the second fastener passes through the mounting hole and cooperates with the first mounting structure of the second filling component.

35. The pallet according to claim 28, characterized in that The plurality of beam structures include: A crossbeam, wherein the crossbeam comprises a first crossbeam and a second crossbeam, wherein the first crossbeam and the second crossbeam are arranged at an interval; A longitudinal beam, wherein the longitudinal beam comprises a first longitudinal beam and a second longitudinal beam, wherein the first longitudinal beam and the second longitudinal beam are respectively connected between two ends of the first cross beam and the second cross beam; an intermediate cross beam, the intermediate cross beam being connected between the first longitudinal beam and the second longitudinal beam, and the intermediate cross beam being located between the first cross beam and the second cross beam; a first corner beam and a second corner beam, the first longitudinal beam and the first transverse beam are connected via the first corner beam, and the second longitudinal beam and the first transverse beam are connected via the second corner beam; There are multiple second filling components, and the multiple second filling components are respectively arranged in the first cross beam, the second cross beam, the first longitudinal beam, the second longitudinal beam, the middle cross beam, the first corner beam and the second corner beam.

36. The pallet according to claim 35, characterized in that The second filling assembly includes a corner filling assembly, and the corner filling assembly includes: A first corner filling component, one end of the first corner filling component is fitted in the longitudinal beam, and the other end of the first corner filling component is fitted in the second cross beam.

37. The pallet according to claim 36, characterized in that The corner filling assembly further comprises: A second corner filling component, one end of the second corner filling component is fitted in the longitudinal beam or the first transverse beam, and the other end of the second corner filling component is fitted in the first corner beam or the second corner beam.

38. The pallet according to claim 37, characterized in that The corner filling component is connected to the second filling component in the adjacent transverse beam or longitudinal beam through at least one connecting structure.

39. The pallet according to claim 38, characterized in that The connection structure comprises: a connecting hole formed on the corner filling component and one of the second filling components in the adjacent cross beam or longitudinal beam; A connecting shaft is provided on the corner filling component and the other of the second filling components in the adjacent transverse beam or longitudinal beam, and the connecting shaft is fitted in the connecting hole.

40. The pallet according to claim 35, characterized in that A plurality of said beam structures further comprises: A plurality of mounting beams, wherein the plurality of mounting beams are respectively arranged on one side of the first longitudinal beam and the second longitudinal beam away from each other; A plurality of lifting ears, wherein the plurality of lifting ears are respectively arranged on one side of the first cross beam and the second cross beam away from each other; The second filling components are respectively arranged in the plurality of mounting beams and the plurality of lifting ears.

41. A pallet according to any one of claims 28 to 40, characterized in that A plurality of cavities are formed in at least one of the plurality of beam structures, and the second filling component is disposed in at least one of the plurality of cavities.

42. A battery pack, characterized in that: Comprising a pallet according to any one of claims 27-41.

43. A vehicle, characterized in that: Comprising a battery pack as claimed in claim 42.

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