Battery box

Abstract

This application discloses a battery box. The battery box includes a chassis, end walls, side walls, and a top cover. The chassis includes a side wall hinge seat and a chassis column located at the corner of the chassis, and the side wall hinge seat is connected to the chassis column. The lower end of the end wall is rotatably connected to the end of the chassis along a second horizontal direction. The lower end of the side wall is provided with a side wall hinge shaft with an axial direction parallel to the second horizontal direction. The side wall hinge shaft extends into a long groove so that the side wall hinge shaft can move along the height direction of the chassis in the long groove and can rotate in the long groove. The top cover is located at the upper end of the battery box. Thus, the end walls are rotatably connected to the chassis, and the side walls are rotatably connected to the chassis through the long groove. In this way, when it is necessary to transport batteries, the battery box can be in an assembled state, and during return transport, the battery box can be in a folded state to reduce the volume of the battery box, thereby increasing the number of battery boxes that each transport vehicle can transport.

Description

Technical Field

[0001] This application relates to the field of battery boxes, and more specifically to battery boxes. Background Technology

[0002] With the rapid development of new energy vehicles, the demand for storage batteries has increased dramatically. Various battery boxes for transporting batteries have been developed. Since lithium-ion batteries are classified as hazardous materials, battery leakage, casing rupture, fires, and explosions may occur during transport. The risks are even higher when transporting damaged, defective, or used batteries through battery boxes.

[0003] Existing battery boxes used for transporting batteries are fixed structures that cannot be folded. As a result, when transporting empty battery boxes on the return trip, the number of vehicles that can carry the batteries is small, leading to high logistics costs.

[0004] Therefore, this application provides a battery box to at least partially solve the above-mentioned problems. Summary of the Invention

[0005] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed embodiments section. This summary section is not intended to limit the key features and essential technical features of the claimed technical solutions, nor is it intended to determine the scope of protection of the claimed technical solutions.

[0006] To at least partially solve the above-mentioned technical problems, this application provides a battery box, which includes:

[0007] The chassis includes a sidewall hinge seat and a chassis column located at the corner of the chassis. The sidewall hinge seat is connected to the chassis column. Along a first horizontal direction, there is a gap between a portion of the sidewall hinge seat and the chassis column to form an elongated slot extending along the height direction of the chassis. Along a second horizontal direction, the opening of the elongated slot faces the center of the chassis.

[0008] End wall, the lower end of which is rotatably connected to the end of the chassis along the second horizontal direction;

[0009] The side wall has a side wall hinge shaft at its lower end, with its axial direction parallel to the second horizontal direction. The side wall hinge shaft extends into the long groove so that it can move along the height direction of the chassis within the long groove and can rotate within the long groove.

[0010] The top cover is located at the top of the battery compartment.

[0011] According to the battery box of this application, the end wall is rotatably connected to the chassis, and the side wall is rotatably connected to the chassis through a long slot. In this way, when it is necessary to transport batteries, the battery box can be in an assembled state, and during return transport, the battery box can be in a folded state to reduce the volume of the battery box, thereby increasing the number of battery boxes that each transport vehicle can transport.

[0012] Optionally, when the battery box is in the assembled state, the side wall hinge axis is located below the end wall.

[0013] Optionally, the sidewall has an inclined position, in which the upper end of the sidewall is further away from the center of the chassis than the lower end of the sidewall in the first horizontal direction.

[0014] Optionally, the battery box further includes an end post sealing part, with an end post at the end of the end wall along the first horizontal direction and a side post at the end of the side wall along the second horizontal direction. The end post sealing part is connected to the end post. Along the first horizontal direction, the end post sealing part protrudes to the outside of the end post. When the side wall is in an inclined position, the end post sealing part is away from the side post. When the battery box is in an assembled state, the inner surface of the side post along the first horizontal direction abuts against the end post sealing part.

[0015] Optionally, the end column has an end column sealing groove with an opening facing the end wall along the outer side of the box in a first horizontal direction, and the end column sealing part is disposed in the end column sealing groove.

[0016] Optionally, the battery box also includes an end beam seal, the lower end of the end wall has a lower end beam, the end beam seal is connected to the lower end beam, the end beam seal protrudes to the outside of the lower end beam along the height direction of the end wall, the end of the chassis along the second horizontal direction has a bottom end beam, and when the battery box is in the assembled state, the end beam seal abuts against the top surface of the bottom end beam.

[0017] Optionally, the lower end beam has an end beam sealing groove with an opening facing the end wall along the height direction of the end wall on the outer side of the box, and the end beam sealing part is disposed in the end beam sealing groove.

[0018] Optionally, the end beam sealing part and the end column sealing part are constructed as a single unit.

[0019] Optionally, the battery box also includes an end wall hinge assembly, through which the inner vertical wall of the lower end beam box is rotatably connected to the inner vertical surface of the bottom end beam box of the bottom end beam.

[0020] Optionally, the chassis has a bottom side beam at the end along the first horizontal direction, the battery box includes a side wall sealing strip, the lower end of the side wall has a lower side beam extending along the second horizontal direction, the side wall sealing strip is connected to the lower side beam, the side wall sealing strip protrudes to the inner side of the lower side beam along the thickness direction of the side wall, when the battery box is in the assembled state, the side wall hinge shaft is located below the side wall sealing strip, the side wall sealing strip abuts against the bottom side beam, when the side wall is in the inclined position, the side wall sealing strip moves away from the bottom side beam.

[0021] Optionally, the side lower beam includes a side wall sealing beam and an outer lower beam, the side wall sealing beam being connected to the inner end of the outer lower beam, and the side wall sealing strip being connected to the side wall sealing beam.

[0022] Optionally, the sidewall sealing beam has a sidewall sealing groove with an opening facing the sidewall and extending along the thickness direction of the sidewall to the inner side of the box, and a sidewall sealing strip is disposed in the sidewall sealing groove.

[0023] Optionally, the upper end of the sidewall hinge seat has a mounting port that communicates with the interior of the long slot, and the outer end of the sidewall hinge shaft away from the center of the sidewall has an axial plane. The distance between the axial plane and the axis of the sidewall hinge shaft is less than the radius of the sidewall hinge shaft. When the sidewall is in an inclined position, the axial plane is perpendicular to the first horizontal direction. Along the first horizontal direction, the size of the mounting port is less than the outer diameter of the sidewall hinge shaft and greater than the maximum size between the axial plane and the arc surface of the sidewall hinge shaft.

[0024] Optionally, the top cover includes a top cover frame, a top cover plate, a top cover sealing beam, and a top cover sealing strip. The top wall of the top cover plate covers and connects to the top surface of the top cover frame. The inner side of the top cover frame is connected to the top cover sealing beam. The top cover sealing beam has a top cover sealing groove with an opening facing away from the top wall of the top cover plate. The top cover sealing strip is disposed in the top cover sealing groove. The top cover sealing strip has a continuous rectangular structure. The corners of the top cover frame have stacking corners. Along the thickness direction of the top cover, the stacking corners protrude to the side of the top wall of the top cover plate away from the top cover frame. The stacking corners also protrude to the side of the top cover frame away from the top wall of the top cover plate.

[0025] Optionally, the top of the side column of the side wall has a column top plate. When the battery box is in the assembled state, the top surface of the end beam of the end wall, the top surface of the side beam of the side wall, and the top surface of the column top plate are flush. The top cover sealing strip abuts against the top surface of the end beam, the top surface of the side beam, and the top surface of the column top plate. Stacking corners are provided on the outer side of the box along the first horizontal direction and the second horizontal direction of the column top plate.

[0026] Optionally, when the battery box is in the folded state, the end walls and side walls are folded to the chassis in sequence, and the top cover overlaps to the top of the chassis column. Stacking corners are provided on the outer side of the box along the first horizontal direction and the second horizontal direction of the chassis column.

[0027] Optionally, the battery box also includes a tensioning assembly.

[0028] The end wall also includes an end vertical beam separated from the end column. A tensioning assembly is connected to the end vertical beam. When the battery box is in the assembled state, the tensioning assembly is used to tighten the top cover to the end wall, or

[0029] The end wall also includes a tensioning assembly fixing plate connected to the end post. The tensioning assembly is connected to the tensioning assembly fixing plate. When the battery box is in the assembled state, the tensioning assembly is used to tension the side wall to the end wall, or

[0030] The side wall has a side vertical beam that is separated from the side pillar. The tensioning assembly is connected to the side vertical beam. When the battery box is in the assembled state, the tensioning assembly is used to tighten the top cover to the side wall.

[0031] Optionally, the side wall also includes a side wall stop, which is located inside the side column of the side wall along the thickness direction of the side wall and connected to the side column. When the battery box is in the assembled state, the side wall stop is located inside the end wall along the thickness direction of the end wall.

[0032] Optionally, the top cover also includes a top cover handle assembly, which is connected to the top cover outer frame of the top cover.

[0033] Optionally, the chassis also includes a bottom plate, a bottom end beam, and a bottom side beam. The bottom plate is connected to the bottom end beam and the bottom side beam. Along the height direction of the chassis, the bottom plate is located below the top surface of the bottom end beam and the top surface of the bottom side beam to form a liquid collection tank.

[0034] Optionally, the chassis also includes a drain net assembly, which includes a drain net frame and a mesh sheet. The mesh sheet is located within the area enclosed by the drain net frame and is connected to the drain net frame. The top surface of the drain net assembly is flush with the top surface of the bottom side beam. The drain net frame overlaps with the bottom plate, and the mesh sheet and the bottom plate are spaced apart.

[0035] Optionally, the chassis also includes a binding part, and the binding part is connected to the inner facade of the bottom end beam box of the bottom end beam and the inner facade of the bottom side beam box of the bottom side beam. The binding part does not protrude from the top surface of the bottom side beam of the bottom side beam.

[0036] Optionally, the battery box also includes a safety valve, which is fixed to at least one of the end wall, side wall and top cover. Attached Figure Description

[0037] To make the advantages of this application more readily apparent, the application briefly described above will be described in more detail with reference to the specific embodiments shown in the accompanying drawings. It is to be understood that these drawings depict only typical embodiments of this application and should not be considered as limiting its scope of protection. The application is described and explained with additional features and details through the drawings.

[0038] Figure 1 This is a perspective view of a battery box according to a preferred embodiment of the present application, wherein the battery box is in an assembled state;

[0039] Figure 2 for Figure 1 A magnified view of part A of the battery box;

[0040] Figure 3 for Figure 1 A magnified view of part B of the battery box;

[0041] Figure 4 for Figure 1 A three-dimensional schematic diagram of the battery box chassis;

[0042] Figure 5 for Figure 4 A magnified view of part C of the chassis of the battery box;

[0043] Figure 6 for Figure 1 A three-dimensional schematic diagram of the end wall of the battery box;

[0044] Figure 7 for Figure 6 A magnified view of a portion of the end wall of the battery box at point D;

[0045] Figure 8 for Figure 1 A three-dimensional schematic diagram of the battery box from another direction, showing only the chassis and one end wall, with the end wall in an upright position;

[0046] Figure 9 for Figure 8 A magnified view of part E of the battery box;

[0047] Figure 10 for Figure 1 A three-dimensional schematic diagram of the side wall of the battery box;

[0048] Figure 11 for Figure 10 A magnified view of a portion of the side wall of the battery box at point F;

[0049] Figure 12 for Figure 1 A three-dimensional schematic diagram of the battery box from another direction, in which the top cover and one end wall are not shown, the side wall is in an inclined state, and the other end wall is in an upright position.

[0050] Figure 13 for Figure 12 A magnified view of part G of the battery box;

[0051] Figure 14 for Figure 12A magnified view of part H of the battery box;

[0052] Figure 15 for Figure 1 A three-dimensional schematic diagram of the battery box from another direction, in which the top cover is not shown and the battery box is in an assembled state;

[0053] Figure 16 for Figure 15 A magnified view of part I of the battery box;

[0054] Figure 17 for Figure 15 A magnified view of part J of the battery box;

[0055] Figure 18 for Figure 1 A 3D schematic diagram of the top cover of the battery box;

[0056] Figure 19 for Figure 18 A partially enlarged schematic diagram of point K on the top cover of the battery box; and

[0057] Figure 20 for Figure 1 A 3D diagram of the battery box, in which the battery box is in a folded state.

[0058] Explanation of reference numerals in the attached figures

[0059] 100: Chassis; 101: Leakage mesh assembly positioning component

[0060] 102: Binding part; 110: Bottom beam

[0061] 111: Top surface of bottom beam; 112: Interior elevation of bottom beam box girder

[0062] 113: Exterior facade of the bottom end beam box girder 114: Support wall of the bottom end beam girder

[0063] 120: Bottom side beam; 121: Top surface of bottom side beam

[0064] 122: Interior elevation of the bottom side beam box girder 123: Exterior elevation of the bottom side beam box girder box

[0065] 124: Bottom side beam support wall; 130: Bottom plate

[0066] 140: Chassis pillar 141: Column end wall

[0067] 142: Column sidewall; 150: Sidewall hinge seat

[0068] 151: Long slot; 152: Mounting port

[0069] 153: Hinge seat end wall; 154: Hinge seat side wall

[0070] 155: Upper wall of hinge seat 156: Lower wall of hinge seat

[0071] 160: Liquid collection tank; 170: Liquid leakage mesh assembly

[0072] 171: Outer frame of the leakage mesh 172: Mesh sheet

[0073] 173: Leakage mesh assembly mounting plate; 180: Fork groove

[0074] 200: End wall; 210: End beam

[0075] 211: Top surface of the end beam 212: Exterior facade of the end beam box girder

[0076] 220: End beam; 221: End beam box outer wall

[0077] 222: Vertical wall in the middle of the end beam 223: Vertical wall inside the box girder of the end beam

[0078] 224: End lower beam sealing groove; 230: End column

[0079] 231: External wall of end column box; 232: Middle wall of end column.

[0080] 233: Inner wall of end column box; 234: Sealing groove of end column.

[0081] 240: End wall cladding plate; 250: End vertical beam

[0082] 260: Tensioner assembly fixing plate; 270: End wall sealing strip

[0083] 300: Side wall; 310: Side upper beam

[0084] 311: Top surface of the side upper beam; 312: Exterior facade of the side upper beam box girder.

[0085] 320: Outer lower beam; 330: Side column

[0086] 331: Outer end wall of the side column; 332: Inner wall of the side column

[0087] 333: Inner end wall of side column; 334: Top plate of column.

[0088] 335: Side wall retainer; 340: Side wall cladding.

[0089] 350: Side vertical beam; 360: Side wall sealing beam

[0090] 361: Side wall sealing groove; 362: Sealing beam box inner vertical wall

[0091] 370: Side wall sealing strip; 380: Hinge shaft connecting plate

[0092] 390: Side wall hinge axis; 391: Axial plane

[0093] 400: Top cover; 410: Top beam

[0094] 411: Bottom wall of top beam; 420: Top and side beams

[0095] 421: Top side beam bottom wall; 430: Stacking angle

[0096] 431: Stacking corner end wall; 432: Stacking corner side wall

[0097] 440: Top cover panel; 441: Top wall of the top cover panel.

[0098] 442: Top cover end wall; 443: Top cover side wall

[0099] 450: Top cover sealing beam; 451: Top cover sealing groove

[0100] 460: Top cover sealing strip; 470: Top cover handle assembly

[0101] 471: Handle 472: Handle base

[0102] 500: Tensioning assembly; 510: Pull-out base

[0103] 511: Pin hole; 520: Pull-out ring

[0104] 530: Hanging plate; 531: Hanging groove

[0105] 540: Pull handle 550: Pin

[0106] 551: Pin rod; 552: Self-locking ring

[0107] 600: End wall hinge assembly; 610: Upper hinge plate

[0108] 611: First hinge hole; 620: Lower hinge plate

[0109] 621: Second hinge hole; 630: Hinge pin

[0110] 700: Safety valve; 801: First gap.

[0111] 802: Second gap Detailed Implementation

[0112] In the following description, numerous specific details are set forth to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that embodiments of this application may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with embodiments of this application.

[0113] The preferred embodiments of this application will now be described with reference to the accompanying drawings. It should be noted that the terms "upper," "lower," and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0114] In this document, ordinal numbers such as “first” and “second” used in this application are merely identifiers and do not have any other meaning, such as a specific order.

[0115] To fully understand the embodiments of this application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may be available in addition to these detailed descriptions.

[0116] This application provides a battery box. The battery box can be used to transport batteries. The battery box has an assembled state and a folded state. When batteries need to be transported, the battery box is in the assembled state to place the batteries inside, thereby facilitating battery transport. On the return trip, the battery box can be in the folded state to reduce its volume, thereby allowing each transport vehicle to transport a larger number of battery boxes.

[0117] Please refer to Figures 1 to 20 The battery box includes a chassis 100, two end walls 200, two side walls 300, and a top cover 400. Along a first horizontal direction D1, one side wall 300 is rotatably connected to one end of the chassis 100, and the other side wall 300 is rotatably connected to the other end of the chassis 100. Along a second horizontal direction D2, one end wall 200 is rotatably connected to one end of the chassis 100, and the other end wall 200 is rotatably connected to the other end of the chassis 100. Chassis pillars 140 are provided at each of the four corners of the chassis 100. Side wall hinge seats 150 are fixedly connected to the outside of the chassis pillars 140. Along the first horizontal direction D1, there is a gap between the hinge seat side wall 154 (described later) and the chassis pillar 140 to form an elongated groove 151 extending along the height direction D3 of the chassis 100. Side wall hinge shafts 390 are located at the lower corners of the side walls 300. The axial direction of the sidewall hinge shaft 390 is parallel to the second horizontal direction D2. The sidewall hinge shaft 390 extends into the elongated slot 151 so that the sidewall hinge shaft 390 is movable along the height direction D3 of the chassis 100. The sidewall hinge shaft 390 can rotate about its axis within the elongated slot 151.

[0118] The battery box has an assembled state and a folded state. In the assembled state, the plane containing the end wall 200 is perpendicular to the plane containing the chassis 100, so that the end wall 200 is in an upright position. The plane containing the side wall 300 is perpendicular to the plane containing the chassis 100, so that the side wall 300 is in a upright position. In the assembled state, the side wall hinge axis 390 is located below the bottom surface of the end wall 200.

[0119] With the battery box in the folded state, the end wall 200 and the side wall 300 are stacked sequentially on top of the chassis 100. With the battery box in the folded state, the plane containing the end wall 200 is perpendicular to the height direction D3 of the chassis 100, so that the end wall 200 is in the folded end wall position. With the battery box in the folded state, the plane containing the side wall 300 is perpendicular to the height direction D3 of the chassis 100, so that the side wall 300 is in the folded side wall position.

[0120] With the battery box in its assembled state, the length direction of the side wall 300 is parallel to the second horizontal direction D2. The length direction of the end wall 200 is parallel to the first horizontal direction D1. The height direction of the side wall 300 is parallel to the height direction D3 of the chassis 100. The height direction of the end wall 200 is parallel to the height direction D3 of the chassis 100.

[0121] like Figure 6 , Figure 10 and Figure 12 As shown, along the first horizontal direction D1, the end wall 200 has end posts 230 at both ends. Along the second horizontal direction D2, the side wall 300 has side posts 330 at both ends. The side wall 300 has an inclined position. When the side wall 300 is in the inclined position, along the first horizontal direction D1, the upper end of the side wall 300 is further away from the center of the chassis 100 than the lower end of the side wall 300. When the side wall 300 is in the inclined position, the side posts 330 are separated from the end posts 230.

[0122] like Figure 6 , Figure 7 , Figure 12 and Figure 14 As shown, the end wall 200 has an end wall sealing strip 270. The end wall sealing strip 270 includes an end beam sealing portion and an end pillar sealing portion. Two end pillar sealing portions are spaced apart along a first horizontal direction D1. The end beam sealing portion is connected to the lower end of the end pillar sealing portion. Preferably, the end beam sealing portion and the end pillar sealing portion are constructed in a U-shape. Therefore, the structure of the end wall sealing strip 270 is simple. Preferably, the end beam sealing portion and the end pillar sealing portion are constructed as a single piece. When the battery box is in the assembled state, the end beam sealing portion and the end pillar sealing portion can form a continuous sealing structure.

[0123] The end post seal is connected to the outer end of the end post 230 along the first horizontal direction D1, away from the center of the end wall 200. When the side wall 300 is in the inclined position, the end post seal and the side post 330 are disengaged so that the end post seal does not interfere with the side wall 300 during the rotation of the end wall 200 to the end wall folding position.

[0124] Specifically, such as Figure 7 , Figure 15 and Figure 16 As shown, the end column 230 is a bent steel plate component. The cross-section of the end column 230 is approximately S-shaped. The end column 230 includes an outer wall 231, an inner wall 233, and a middle wall 232. Along the thickness direction of the end wall 200, the outer wall 231, the middle wall 232, and the inner wall 233 are arranged sequentially. Along the thickness direction of the end wall 200, the outer wall 231 is located outside the inner wall 233, and the middle wall 232 is located outside the inner wall 233. The outer wall 231 and the middle wall 232 are connected by a side connecting wall to form an end column sealing groove 234. Along the first horizontal direction D1, the opening of the end column sealing groove 234 is away from the center of the end wall 200. That is, along the first horizontal direction D1, the opening of the end column sealing groove 234 faces the outside of the end wall 200. The middle wall 232 of the end column and the inner wall 233 of the end column box are connected by another side connecting wall. In this way, the outer wall 231 of the end column box, the inner wall 233 of the end column box, the middle wall 232 of the end column, and the side connecting wall form a structure with an approximately S-shaped cross-section.

[0125] A lower end beam 220 is provided at the lower end of the end wall 200. Both ends of the lower end beam 220 are connected to the lower ends of the end column 230. The structure of the lower end beam 220 is similar to that of the end column 230. The lower end beam 220 is a bent steel plate component. The cross-section of the lower end beam 220 is approximately S-shaped. The lower end beam 220 has an outer vertical wall 221, an inner vertical wall 223, and a middle vertical wall 222. Along the thickness direction of the end wall 200, the outer vertical wall 221, the middle vertical wall 222, and the inner vertical wall 223 are arranged sequentially. Along the thickness direction of the end wall 200, the outer vertical wall 221 is located outside the inner vertical wall 223, and the middle vertical wall 222 is located outside the inner vertical wall 223. The outer vertical wall 221 and the middle vertical wall 222 of the end beam box are connected by a bottom connecting wall to form the end beam sealing groove 224. Along the height direction of the end wall 200, the opening of the end beam sealing groove 224 is away from the center of the end wall 200. That is, along the height direction of the end wall 200, the opening of the end beam sealing groove 224 faces the outer side of the end wall 200 box. The middle vertical wall 222 and the inner vertical wall 223 of the end beam box are connected by another bottom connecting wall. Thus, the outer vertical wall 221, the inner vertical wall 223, the middle vertical wall 222, and the bottom connecting wall form a structure with an approximately S-shaped cross-section.

[0126] Along the thickness direction of the end wall 200, the end column sealing groove 234 is located at the end lower beam sealing groove 224, so that the end column sealing groove 234 and the end lower beam sealing groove 224 are aligned and connected. Along the thickness direction of the end wall 200, the end column sealing groove 234 and the end lower beam sealing groove 224 are located at the ends of the end wall 200 away from the center of the chassis 100. The end column sealing portion is disposed within the end column sealing groove 234. Along the first horizontal direction D1, the end column sealing portion protrudes to the outer side of the end column 230. The end beam sealing portion is disposed within the end lower beam sealing groove 224. The end beam sealing portion protrudes to the outer side of the edge of the end lower beam sealing groove 224.

[0127] In an embodiment not shown, both the end column sealing groove and the end lower beam sealing groove are located at the end of the end wall near the center of the chassis, along the thickness direction of the end wall.

[0128] Specifically, such as Figure 2 , Figure 5 and Figure 11As shown, the chassis column 140 includes a column end wall 141 and a column side wall 142. The column end wall 141 and column side wall 142 are constructed in an L-shape. When the battery box is in the assembled state, the column end wall 141 is parallel to the plane containing the end wall 200 and is located on the outer side of the side column 330 along the second horizontal direction D2. The column side wall 142 is parallel to the plane containing the side wall 300 and is located on the outer side of the side column 330 along the first horizontal direction D1. The side column 330 includes an outer side wall 331, an inner side wall 332, and an inner side wall 333. The inner side wall 332 is approximately flush with the inner surface of the side wall 300. Along the second horizontal direction D2, the edge of the inner wall 332 of the side column away from the center of the side wall 300 bends and extends toward the inner side of the side wall 300 to form the outer end wall 331 of the side column, and the edge of the inner wall 332 of the side column near the center of the side wall 300 bends and extends toward the outer side of the side wall 300 to form the inner end wall 333 of the side column. When the battery box is in the assembled state, there is a first gap 801 between the inner wall 332 of the side column and the side wall 142 of the column, so that the side wall 300 can be rotated to an inclined position.

[0129] like Figure 2 , Figure 8 , Figure 9 and Figure 11 As shown, the sidewall 300 also includes a lower side beam. The lower side beam is located at the lower end of the sidewall 300. The lower side beam includes an outer lower beam 320 and a sidewall sealing beam 360. Both ends of the outer lower beam 320 are connected to the lower ends of the side columns 330. The inner end of the outer lower beam 320 near the inner side of the sidewall 300 is fixedly connected to the sidewall sealing beam 360. The bottom surface of the sidewall sealing beam 360 is approximately flush with the bottom surface of the outer lower beam 320. The sidewall sealing beam 360 includes a sidewall sealing groove 361. The opening of the sidewall sealing groove 361 faces the inner side of the sidewall 300. The edge of the upper wall of the sidewall sealing groove 361 near the inner side of the sidewall 300 bends upward and extends to form the inner wall 362 of the sealing beam box. The inner wall 362 of the sealing beam box is connected to the inner wall 332 of the side column. The inner surface of the inner wall 362 of the sealed beam box is flush with the inner surface of the inner wall 332 of the side column. The side wall 300 also includes a side wall sealing strip 370. The side wall sealing strip 370 is disposed in the side wall sealing groove 361. The side wall sealing strip 370 protrudes from the inner surface of the inner wall 362 of the sealed beam box. That is, along the thickness direction of the side wall 300, the side wall sealing strip 370 protrudes to the inner side of the lower side beam.

[0130] The chassis 100 includes bottom side beams 120. Along a first horizontal direction D1, one bottom side beam 120 is located at one end of the chassis 100, and the other bottom side beam 120 is located at the other end of the chassis 100. The bottom side beam 120 has a top surface 121 and an outer facade 123. When the battery box is in the assembled state, a side wall sealing strip 370 is located on the outside of the outer facade 123 of the bottom side beam and abuts against the outer facade 123 to achieve a seal between the side wall 300 and the chassis 100. A portion of the side wall sealing strip 370 is located below the top surface 121 of the bottom side beam, and a portion of the side wall sealing strip 370 is located above the top surface 121 of the bottom side beam. When the battery box is in the assembled state, an end wall sealing strip 270 protrudes from the outer facade 123 of the bottom side beam along the first horizontal direction D1. Thus, with the battery box in its assembled state, the side wall sealing strip 370 and the end wall sealing strip 270 abut against each other to seal the joint between the end wall 200 and the chassis 100. Both ends of the side wall sealing strip 370 abut against the end wall sealing strip 270, and the entire length of the side wall sealing strip 370 abuts against the bottom side beam 120, thereby ensuring a continuous seal between the joint between the end wall 200 and the chassis 100 and the side wall 300.

[0131] like Figure 1 , Figure 3 , Figure 10 and Figure 17 As shown, the battery box also includes a tensioning assembly 500. The tensioning assembly 500 is located on the outer side of the end wall 200 near the upper corner. The tensioning assembly 500 includes a latch base 510, a latch ring 520, a hanging tab 530, a latch handle 540, and a pin 550. The latch base 510 has a pin hole 511. The hanging tab 530 has a hanging groove 531. The pin 550 includes a pin rod 551 and a self-locking ring 552. A tensioning assembly fixing plate 260 is located on the outer side of the upper corner of the end wall 200. The latch base 510 is fixedly connected to the tensioning assembly fixing plate 260. The hanging tab 530 is fixedly connected to the outer side of the side column outer end wall 331 along a second horizontal direction. The latch handle 540 is pivotally connected to the latch base 510. The latch ring 520 is pivotally connected to the latch handle 540. The pivot positions of the pull handle 540 and the pull base 510 are separated from the pivot positions of the pull ring 520 and the pull handle 540.

[0132] When the battery box needs to be in the assembled position, lift the free end of the latch handle 540 and hook the latch ring 520 into the hanging groove 531 of the hanging plate 530; then press the free end of the latch handle 540 against the end wall 200, thereby tightening the latch ring 520 and the hanging plate 530, which in turn tightens the side wall 300 to the end wall 200. At this time, the inner surface of the inner wall 362 of the sealing beam box of the side wall 300 and the inner surface of the inner wall 332 of the side column compress the end wall sealing strip 270 located in the end column sealing groove 234. The outer surface 123 of the bottom side beam box compresses the side wall sealing strip 370. The end of the side wall sealing strip 370 and the end wall sealing strip 270 compress each other. Thus, the gap between the side wall 300 and the end wall 200 is sealed, and the gap between the side wall 300 and the chassis 100 is sealed. Then, insert the pin 551 of the pin 550 into the pin hole 511 of the buckle base 510 so that the pin 551 blocks the buckle handle 540, preventing the tensioning assembly 500 from opening without external force (the buckle handle 540 rotates so that the buckle ring 520 leaves the hanging piece 530); then, the self-locking ring 552 is pressed against the pin 551 to prevent the pin 551 from exiting the pin hole 511, thus completing the locking of the tensioning assembly 500.

[0133] like Figure 5 , Figure 6 , Figure 9 , Figure 13 and Figure 17 As shown, the chassis 100 also includes bottom end beams 110. Along the second horizontal direction D2, one bottom end beam 110 is located at one end of the chassis 100, and the other bottom end beam 110 is located at the other end of the chassis 100. The bottom end beam 110 has a top surface 111, an inner elevation 112, and an outer elevation 113. Along the height direction D3 of the chassis 100, the top surface 111 of the bottom end beam and the top surface 121 of the bottom side beam are flush.

[0134] The end wall 200 is rotatably connected to the bottom end beam 110 via an end wall hinge assembly 600. The end wall hinge assembly 600 includes an upper hinge plate 610, a lower hinge plate 620, and a hinge shaft 630. The upper hinge plate 610 has a first hinge hole 611. The lower hinge plate 620 has a second hinge hole 621. The upper hinge plate 610 is connected to the inner wall 223 of the lower end beam box of the lower end beam 220. The lower hinge plate 620 is connected to the inner surface 112 of the bottom end beam box of the bottom end beam 110. The hinge shaft 630 passes through the first hinge hole 611 and the second hinge hole 621 to pivot the end wall 200 to the chassis 100. Preferably, the hinge shaft is a bolt shaft. This facilitates installation. When the battery box is in the assembled state, the top surface 111 of the bottom end beam 110 and the top surface 121 of the bottom side beam 120 are compressed and installed on the end wall sealing strip 270 of the lower end beam 220 to seal the gap between the end wall 200 and the chassis 100.

[0135] like Figure 15 and Figure 16 As shown, before tightening the end wall 200 and side wall 300 by the tensioning assembly 500, the end wall 200 should be rotated to an upright position. When the end wall 200 is rotated to the upright position, the end wall sealing strip 270 installed on the lower end beam 220 is compressed. Thus, the end wall 200 is subjected to a thrust generated by the compression of the end wall sealing strip 270, causing the end wall 200 to flip inwards (the end of the end wall 200 away from the bottom end beam 110 moves towards the center of the chassis 100).

[0136] At this time, in order to stabilize the end wall 200 in the upright position, the side wall 300 also includes a side wall stop 335. The side wall stop 335 is located on the inner side of the side column 330 along the thickness direction of the side wall 300 and is connected to the side column 330. That is, the side wall stop 335 is connected to the inner surface of the side column inner wall 332 along the thickness direction of the side wall 300. Preferably, the side wall stop 335 is a round steel bar. When the battery box is in the assembled state, the side wall stop 335 is located on the inner side of the end wall 200 along the thickness direction of the end wall 200 to prevent the end wall 200 from flipping inward.

[0137] In an embodiment not shown, the side wall baffle may be omitted. In this case, a portion of the inner facade of the column top plate (described later) extends inward along the thickness direction of the side wall, forming a protrusion. When the battery box is in the assembled state, the protrusion is located on the inner side of the end wall along the thickness direction of the end wall, preventing the end wall from flipping inward.

[0138] like Figure 13 and Figure 14 As shown, when the side wall 300 is in an inclined position, the inner wall 332 of the side column abuts against the top of the side wall 142 of the column. Because the interval distance of the first gap 801 is large, the side wall 300 can tilt outward at a large angle.

[0139] When the side wall 300 is in an inclined position, the side wall hinge shaft 390 is located below the bottom surface of the end wall 200. That is, when the side wall 300 is in an inclined position, the side wall hinge shaft 390 is lower than the bottom surface of the end wall sealing strip 270. When the side wall 300 is in an inclined position, the side wall hinge shaft 390 is located below the bottom surface of the side wall sealing strip 370. That is, when the side wall 300 is in an inclined position, the side wall hinge shaft 390 is lower than the bottom surface of the side wall sealing strip 370. Due to the elongated groove 151, the side wall hinge shaft 390 has sufficient downward movement space. Thus, the position of the side wall hinge shaft 390 can be a considerable distance below the bottom surface of the end wall sealing strip 270 and the bottom surface of the side wall sealing strip 370. Thus, on the one hand, when the side wall 300 is in an inclined position, the inner wall 332 of the side column 330, the inner wall 362 of the sealing beam box of the side wall sealing beam 360, and the side wall sealing strip 370 can be separated from the end wall sealing strip 270, avoiding interference between the end wall sealing strip 270 and the side wall 300 during the process of the end wall 200 rotating to the end wall folding position and rotating to the end wall upright position. At the same time, it can ensure that the side wall 300 has a sufficiently large compression amount on the end wall sealing strip 270 during the process of the side wall 300 rotating from the inclined position to the side wall upright position, so as to ensure the sealing effect between the end column 230 and the side column 330. On the other hand, when the side wall 300 is in an inclined position, the side wall sealing strip 370 can be detached from the bottom side beam 120, and a second gap 802 is formed between the side wall sealing strip 370 and the bottom side beam 120. This avoids interference between the side wall sealing strip 370 and the chassis 100 during the process of removing the side wall 300 from the chassis 100 or installing it onto the chassis 100. At the same time, it can ensure that during the process of rotating the side wall 300 from the inclined position to the upright position, the bottom side beam 120 has a sufficiently large compression on the side wall sealing strip 370 to ensure the sealing effect between the bottom side beam 120 and the side wall 300.

[0140] like Figure 2 , Figure 5 , Figure 11 and Figure 13As shown, the sidewall hinge seat 150 is a bent steel plate component. The sidewall hinge seat 150 includes a hinge seat end wall 153, a hinge seat side wall 154, a hinge seat upper wall 155, and a hinge seat lower wall 156. The hinge seat side wall 154 is parallel to and spaced apart from the column side wall 142. The hinge seat end wall 153 and the hinge seat side wall 154 are connected to form a generally L-shaped structure. The hinge seat end wall 153 is connected to the outside of the box along the second horizontal direction of the column end wall 141. The upper edge of the hinge seat side wall 154 bends and extends towards the column side wall 142 to form the hinge seat upper wall 155. The hinge seat upper wall 155 is connected to the column side wall 142. The lower edge of the hinge seat side wall 154 bends and extends towards the column side wall 142 to form the hinge seat lower wall 156. The hinge seat lower wall 156 is connected to the column side wall 142. The hinge seat sidewall 154, hinge seat upper wall 155, hinge seat lower wall 156, and column sidewall 142 form an elongated groove 151. Along the second horizontal direction D2, the opening of the elongated groove 151 faces the center of the chassis 100. Along the second horizontal direction D2, the end of the hinge seat upper wall 155 near the center of the chassis 100 has a mounting opening 152. The mounting opening 152 communicates with the elongated groove 151.

[0141] The sidewall 300 includes a hinge shaft connecting plate 380. The upper part of the hinge shaft connecting plate 380 is connected to the outer side of the box along the thickness direction of the outer lower beam 320. The lower end of the hinge shaft connecting plate 380 is connected to the sidewall hinge shaft 390. Along the second horizontal direction D2, the outer end of the sidewall hinge shaft 390, away from the center of the sidewall 300, protrudes from the hinge shaft connecting plate 380. The outer end portion of the sidewall hinge shaft 390 is provided with an axial plane 391. When the sidewall 300 is in an inclined position, the axial plane 391 is perpendicular to the first horizontal direction D1, that is, the axial plane is aligned with the mounting opening 152. The distance between the axial plane 391 and the axis of the sidewall hinge shaft 390 is less than the radius of the sidewall hinge shaft 390. The maximum distance between the axial plane 391 and the arcuate surface of the sidewall hinge shaft 390 is less than the width dimension of the mounting opening 152 along the first horizontal direction D1. The width of the mounting opening 152 is smaller than the diameter of the side wall hinge shaft 390.

[0142] The side wall hinge shaft 390 can rotate and move within the elongated slot 151. When the side wall 300 is in the tilted position, it is lifted upwards. Since the shaft plane 391 aligns with the mounting opening 152, the side wall hinge shaft 390 moves upwards within the elongated slot 151, allowing it to be removed from the slot and thus detached. Conversely, the side wall hinge shaft 390 can enter the elongated slot 151 from the mounting opening 152, enabling installation of the side wall 300. When the side wall 300 is in the folded position, since the shaft plane 391 is no longer aligned with the mounting opening 152, the side wall hinge shaft 390 cannot be removed from the slot, preventing loss of the side wall 300 during battery box use.

[0143] Because the side wall hinge seat 150 is located on the outside of the chassis column 140, the long slot 151 can extend downwards without being affected by the bottom side beam 120 and the chassis column 140, allowing the bottom of the long slot 151 to be lower than the top surface 121 of the bottom side beam. Thus, while fully utilizing the height of the chassis 100, the bottom of the long slot 151 can be a considerable distance lower than the top surface 121 of the bottom side beam. Therefore, when the battery box is in the assembled state, the side wall hinge shaft 390 is located at the bottom of the long slot 151. Consequently, when the side wall 300 is in the inclined position, the compression of the end wall sealing strip 270 and the side wall sealing strip 370 is released, allowing the side wall 300 to detach from the end wall 200 and the bottom side beam 120. This ensures that the end wall 200 does not interfere with the side wall 300 during rotation to the end wall folding position or to the end wall upright position, and that the installation and removal of the side wall 300 do not interfere with the bottom side beam 120 and the end wall 200. The side wall hinge seat 150 allows for a large displacement of the sealing positions of the side wall 300 and the end wall 200, as well as the sealing positions of the side wall 300 and the bottom side beam 120, when the side wall 300 moves to the tilted position. This provides sufficient compression to the end wall sealing strip 270 and the side wall sealing strip 370 during the process of rotating the battery box to an upright position, ensuring the sealing effect between the side wall 300 and the end wall 200, as well as the sealing effect between the side wall 300 and the bottom side beam 120.

[0144] In this embodiment, the end wall 200 is rotatably connected to the chassis 100, and the side wall 300 is rotatably connected to the chassis 100 through the elongated groove 151. In this way, when it is necessary to transport batteries, the battery box can be in an assembled state, and during the return transport, the battery box can be in a folded state to reduce the volume of the battery box, thereby increasing the number of battery boxes that each transport vehicle can transport.

[0145] like Figure 18 and Figure 19As shown, the top cover 400 includes two top beams 410, two top side beams 420, and a top cover plate 440. The two top beams 410 and the two top side beams 420 are connected to form a rectangular top cover frame. The top cover plate 440's top cover plate top wall 441 covers the top surface of the top cover frame (the end face of the top cover frame away from the chassis 100 when the top cover 400 is connected to the chassis 100 or end wall 200). The top cover 400 also includes a top cover sealing beam 450 and a top cover sealing strip 460. The top cover sealing beam 450 is connected to the inner side of the top cover frame. The top cover sealing beam 450 has a top cover sealing groove 451 with an opening facing away from the top cover plate top wall 441. That is, when the battery box is in the assembled state, the opening of the top cover sealing beam 450 faces the chassis 100. The top cover sealing strip 460 is disposed within the top cover sealing groove 451. The top cover sealing strip 460 is a continuous rectangle. Stacking corners 430 are provided at the four corners of the top cover outer frame. The stacking corners 430 protrude upward to the side of the top wall 441 of the top cover panel away from the top cover outer frame, and the stacking corners 430 protrude downward to the side of the top cover outer frame away from the top wall 441 of the top cover panel.

[0146] Specifically, the top beam 410 has a bottom wall 411. The top side beam 420 has a bottom wall 421. Along the thickness direction of the top cover 400, the bottom surface of the top beam bottom wall 411 away from the top cover plate top wall 441 and the bottom surface of the top side beam bottom wall 421 away from the top cover plate top wall 441 are flush. The bottom surfaces of the top beam bottom wall 411 and the top side beam bottom wall 421 away from the top cover plate top wall 441 form the bottom surface of the top cover outer frame. The top cover sealing beam 450 is a U-shaped structural beam with an opening away from the top cover plate top wall 441 to form a top cover sealing groove 451. Part of the top cover sealing beam 450 is connected to the inner side of the top beam 410. Part of the top cover sealing beam 450 is connected to the inner side of the top side beam 420. Along the thickness direction of the top cover 400, the top cover sealing beam 450 is located on the bottom surface of the top cover outer frame, near the top wall 441 of the top cover panel. The top cover sealing strip 460 is disposed within the top cover sealing groove 451. The top cover sealing strip 460 protrudes to a predetermined distance from the bottom surface of the top cover outer frame on the side away from the top wall 441 of the top cover panel.

[0147] It is understood that, in embodiments not shown, the bottom surface of the top cover sealing beam is flush with the bottom surface of the top cover outer frame along the thickness direction of the top cover.

[0148] The stacking corner 430 includes a stacking corner end wall 431 and a stacking corner side wall 432. Preferably, the stacking corner 430 has an L-shaped structure. The stacking corner end wall 431 is connected to the outer facade of the top beam 410. The stacking corner side wall 432 is connected to the outer facade of the top side beam 420. The stacking corner 430 protrudes upward to the side of the top cover panel top wall 441 away from the top cover outer frame to limit the upper battery box when the battery boxes are stacked. The stacking corner 430 protrudes downward to the side of the top cover outer frame away from the top cover panel top wall 441 to limit the top cover 400 when the battery box is in the assembled or folded state. The four edges of the top cover panel top wall 441 can also be bent and extended toward the top cover outer frame to form the top cover panel end wall 442 and the top cover panel side wall 443. Along the thickness direction of the top cover 400, the top cover end wall 442 and the top cover side wall 443 extend downwards and protrude to the side of the top cover outer frame away from the top cover top wall 441. The top cover end wall 442 fits against the outer facade of the top beam 410 and connects with the top beam 410 and the stacking corner end wall 431. The top cover side wall 443 fits against the outer facade of the top side beam 420 and connects with the top side beam 420 and the stacking corner side wall 432. The top cover end wall 442 and the top cover side wall 443 can assist in the sealing of the top cover 400, play a preliminary role in blocking rainwater, and also strengthen the top cover 400.

[0149] It is understood that, in embodiments not shown, the top cover can be a flat plate. In this case, the top cover includes top cover end walls and top cover side walls. The top cover end walls are configured in a manner substantially the same as the top cover end walls. The top cover side walls are configured in a manner substantially the same as the top cover side walls. The top cover end walls and top cover side walls can be additional flat plate components. It is understood that the top cover end walls and top cover side walls can also be formed by bending and extending a top beam and a top side beam. Since the top cover is relatively thin, the configuration of the top cover end walls and top cover side walls can increase their thickness to strengthen the top cover.

[0150] like Figure 1 , Figure 3 , Figure 6 , Figure 10 , Figure 15 and Figure 16As shown, the end wall 200 also includes an end upper beam 210. The two ends of the end upper beam 210 are connected to the upper ends of the end columns 230. The end upper beam 210 has an end upper beam top surface 211 and an end upper beam box outer facade 212. The end upper beam top surface 211 is flush with the top surface of the end column 230. The side wall 300 also includes a side upper beam 310. The two ends of the side upper beam 310 are connected to the upper ends of the side columns 330. The side upper beam 310 has a side upper beam top surface 311 and a side upper beam box outer facade 312. A column top plate 334 is connected to the top of the side column 330. The box inner facade of the column top plate 334 is flush with the box inner surface of the side column inner wall 332. The column top plate 334 is connected to the side upper beam 310. The top surface of the column top plate 334 is flush with the side upper beam top surface 311.

[0151] When the battery box is in its assembled state, the top surface 211 of the end beam of the end wall 200, the top surface 311 of the side beam of the side wall 300, and the top surface of the column top plate 334 are flush. The top surface of the end wall sealing strip 270, which is disposed in the end column sealing groove 234, protrudes beyond the top surface of the end column 230 by a predetermined distance, so that the end wall sealing strip 270 and the top cover sealing strip 460 can compress and seal against each other. The top surface 211 of the end beam, the top surface of the end column 230, the top surface of the end wall sealing strip 270, the top surface 311 of the side beam, and the top surface of the column top plate 334 together constitute the top cover sealing surface that mates with the top cover sealing strip 460. The top cover sealing strip 460 compresses and seals with the top cover sealing surface. When the battery box is in the assembled state, stacking angles 430 are provided on the outer side of the top plate 334 along the first horizontal direction D1 and the second horizontal direction D2 to limit the top cover 400 in the horizontal direction. The end wall 442 of the top cover is located on the outer side of the end beam 210 and is spaced apart from the end beam 210. The side wall 443 of the top cover is located on the outer side of the side beam 310 and is spaced apart from the side beam 310.

[0152] A tensioning assembly 500 is provided between the top cover 400 and the end wall 200. A tensioning assembly 500 is also provided between the top cover 400 and the side wall 300. Specifically, the end wall 200 further includes an end vertical beam 250. The two ends of the end vertical beam 250 are respectively connected to the upper end beam 210 and the lower end beam 220. The end vertical beam 250 and the end column 230 are separated. In part of the tensioning assembly 500, a pull-tab base 510 is fixedly connected to the end vertical beam 250, and a hanging piece 530 is fixedly connected to the bottom wall 411 of the top beam of the top cover 400. This hanging piece 530 is located within the gap between the end wall 442 of the top cover plate and the upper end beam 210.

[0153] The side wall 300 also includes a side vertical beam 350. The two ends of the side vertical beam 350 are connected to the upper side beam 310 and the lower outer side beam 320, respectively. The side vertical beam 350 is separated from the side column 330. In the partial tensioning assembly 500, the pull-tab base 510 is fixedly connected to the side vertical beam 350, and the hanging piece 530 is fixedly connected to the bottom wall 421 of the top side beam of the top cover 400. The hanging piece 530 is located within the gap between the side vertical wall 443 of the top cover panel and the upper side beam 310. The tensioning assemblies 500 between the top cover 400 and the end wall 200, and between the top cover 400 and the side wall 300, are locked together, and the top cover sealing strip 460 is pressed against the top cover sealing surface, thereby sealing the top cover 400, the end wall 200, and the side wall 300.

[0154] The top cover 400 is also provided with a top cover handle assembly 470. The top cover handle assembly 470 includes a handle 471 and a handle seat 472. The handle 471 is rotatably connected to the handle seat 472. The handle seat 472 is fixedly connected to the bottom wall 411 of the top beam of the top cover 400. The handle seat 472 is located in the gap between the top cover end wall 442 and the end upper beam 210.

[0155] It is understood that, in the embodiment not shown, the handle can also be in other forms. For example, the handle can be a non-metallic webbing. The two ends of the webbing are riveted to the outside of the top cover end wall 442 using rivets. In this case, the riveting point between the top cover end wall 442 and the webbing can be locally reinforced to prevent damage to the top cover end wall when operating the handle. Alternatively, the top cover end wall can be replaced with another, thicker, flat panel part. Of course, the handle can also be attached to the side of the top cover.

[0156] like Figure 4 , Figure 5 , Figure 15 and Figure 17 As shown, the chassis 100 also includes a base plate 130. Two bottom end beams 110 and two bottom side beams 120 are connected to form a rectangular chassis frame. The inner vertical wall of the bottom end beam box of the bottom end beam 110 bends and extends towards the center of the chassis 100 to form a bottom end beam support wall 114. The inner vertical wall of the bottom side beam box of the bottom side beam 120 bends and extends towards the center of the chassis 100 to form a bottom side beam support wall 124. Along the height direction D3 of the chassis 100, the top surface of the bottom end beam support wall 114 is flush with the top surface of the bottom side beam support wall 124 and is located below the top surface 121 of the bottom side beam. The base plate 130 overlaps the top surfaces of the bottom end beam support walls 114 and the bottom side beam support walls 124. The top surface of the base plate 130 is located below the top surface 121 of the bottom side beam. Thus, the bottom plate 130, the top surface 121 of the bottom side beam 120, and the top surface 111 of the bottom end beam 110 are spaced apart to form a liquid collection tank 160. The liquid collection tank 160 is used to collect battery leakage.

[0157] The chassis 100 also includes a central bottom beam. There are multiple central bottom beams. These beams are connected in pairs. The length direction of some central bottom beams is parallel to the length direction of the bottom end beam 110. The length direction of some central bottom beams is parallel to the length direction of the bottom side beam 120. The central bottom beams are located within the area enclosed by the chassis outer frame. The top surface of some central bottom beams connects to the bottom surface of the bottom end beam support wall 114. The top surface of some central bottom beams connects to the bottom surface of the bottom side beam support wall 124. The bottom surface of the central bottom beams is flush with the bottom surfaces of the bottom side beam 120 and the bottom end beam 110.

[0158] In embodiments not shown, the bottom beam does not have a bottom beam support wall, and the bottom side beams do not have bottom side beam support walls. Both ends of a portion of the bottom center beam are connected to the inner facade of the bottom beam box. Both ends of a portion of the bottom center beam are connected to the inner facade of the bottom side beam box. The bottom plate overlaps to the top surface of the bottom center beam.

[0159] The chassis 100 also includes a drain mesh assembly 170. The drain mesh assembly 170 includes a drain mesh frame 171 and a mesh panel 172. The mesh panel 172 is located within the area enclosed by the drain mesh frame 171. The four sides of the mesh panel 172 are fixedly connected to the drain mesh frame 171. The top surface of the drain mesh assembly 170 is approximately flush with the top surface of the bottom side beam 120. The drain mesh frame 171 is supported on the base plate 130. The mesh panel 172 and the base plate 130 are spaced apart to prevent the battery placed on the drain mesh assembly 170 from being soaked and corroded by the drain fluid in the collection tank 160, thereby causing secondary damage and potential danger.

[0160] Preferably, the mesh 172 is a steel grating. The drain net assembly 170 also includes a drain net assembly mounting plate 173. The drain net assembly mounting plate 173 is a U-shaped plate. The opening of the drain net assembly mounting plate 173 faces the center of the drain net assembly 170. The drain net assembly mounting plate 173 is connected to the four outer facades of the drain net outer frame 171 to form rectangular drain net assembly positioning holes. The bottom side beam 120 also has an inner facade 122 of the bottom side beam box. The chassis 100 also includes a drain net assembly positioning member 101. The drain net assembly positioning member 101 is an L-shaped plate. The drain net assembly positioning member 101 has a horizontal wall and a vertical wall. The plane containing the horizontal wall is parallel to the plane containing the bottom plate 130. One end of the horizontal wall of part of the drain net assembly positioning member 101 is connected to the inner facade 122 of the bottom side beam box. One end of the horizontal wall of part of the drain net assembly positioning member 101 is connected to the inner facade 112 of the bottom end beam box. The vertical wall is located above the horizontal wall. The positioning hole of the drain mesh assembly fits into the vertical wall of the drain mesh assembly positioning piece 101 from top to bottom. This positions the drain mesh assembly 170 horizontally, preventing it from moving during transportation. The connection method of the drain mesh assembly positioning piece 101 facilitates the disassembly of the drain mesh assembly 170 for cleaning of the collection tank 160.

[0161] In embodiments not shown, the drain mesh assembly can also be detachably secured to the chassis using fasteners.

[0162] The chassis 100 also includes a binding part 102. The binding part 102 is a binding ring. Part of the binding part 102 is fixed to the inner surface 112 of the bottom end beam box of the bottom end beam 110. Another part of the binding part 102 is fixed to the inner surface 122 of the bottom side beam box of the bottom side beam 120. The binding part 102 is used to bind and fix the battery placed in the leakage net assembly 170. The binding part 102 does not protrude from the top surface 121 of the bottom side beam 120, so as to facilitate the installation and removal of the battery after the side wall 300 is removed.

[0163] The positioning component 101 of the leakage net assembly creates space for binding straps between the leakage net assembly 170 and the inner facade 122 of the bottom side beam box, and between the leakage net assembly 170 and the inner facade 112 of the bottom end beam box.

[0164] like Figure 20 As shown, with the battery box in the folded state, the end wall 200 and side wall 300 are folded sequentially to the chassis 100. The top cover 400 is placed on top of the chassis pillar 140. Stacking angles 430 are provided on the outer sides of the four chassis pillars 140 along the first horizontal direction D1 and the second horizontal direction D2 to limit the top cover 400 in the horizontal direction.

[0165] The steps for rotating the battery box to the assembled state are as follows: Remove the top cover 400 of the battery box from the chassis 100 when it is in the folded state; then rotate the two side walls 300 to the tilted position; rotate the first end wall 200 to the upright position; then rotate the first side wall 300 to the position abutting against the first end wall 200, while the side wall stop 335 of the first side wall 300 blocks the first end wall 200; then lock the tensioning assembly connecting the first end wall 200 and the first side wall 300 to tension the first side wall 300 to the upright position; then pull the upper end of the other end of the first side wall 300 outward and rotate the second end wall 200 to the upright position; then release the first side wall 300 to... Rotate the first sidewall 300 to abut against the second endwall 200, while simultaneously blocking the second endwall 200 with the other sidewall stop 335 of the first sidewall 300; then lock the tensioning assembly connecting the second endwall 200 and the first sidewall 300; then rotate the second sidewall 300 to abut against the endwall 200, while simultaneously blocking the two endwalls 200 with the two sidewall stops 335 of the second sidewall respectively; then lock the tensioning assembly connecting the second sidewall 300 and the two endwalls 200 to tension the second sidewall 300 to an upright position; then cover with the top cover 400; then lock the tensioning assembly connecting the top cover 400, the endwall 200, and the sidewall 300 to complete the assembly of the battery box.

[0166] The steps for rotating the battery box to the folded state are the reverse of the steps for rotating the battery box to the assembled state, and will not be described again here.

[0167] The steps for opening the battery box are as follows: Open the tensioning assembly 500 connecting the top cover 400 and the end wall 200 of the battery box in the assembled state, and open the tensioning assembly 500 connecting the top cover 400 and the side wall 300, and remove the top cover 400; then open the tensioning assembly connecting one side wall 300 and the end wall 200, and rotate the side wall 300 to an inclined position; then move the side wall 300 upward to remove it from the chassis 100, thus completing the opening of the battery box.

[0168] The steps for closing the battery compartment are the reverse of those for opening it, and will not be repeated here.

[0169] like Figure 3 , Figure 6 and Figure 16 As shown, the battery box also includes a safety valve 700. The safety valve 700 is fixed to the end wall 200. When the gas generated by the accidental combustion of the battery causes the internal pressure of the electromagnetic box to exceed the safe pressure, the safety valve 700 is activated to release pressure and dissipate heat, preventing the battery box from deforming and being damaged or causing a fire or explosion.

[0170] Preferably, the battery box may also include a ventilation device. For example, the safety valve is a waterproof, breathable, and explosion-proof valve. Thus, the safety valve includes a ventilation device. The safety valve simultaneously provides waterproofing, ventilation, and explosion-proof functions. When the internal pressure of the battery box is less than the burst value set by the safety valve, it is in normal operating condition. At this time, the safety valve can achieve waterproof and breathable functions, allowing free flow of gas inside and outside the electromagnetic box, achieving pressure balance between the inside and outside of the electromagnetic box, and preventing deformation of the electromagnetic box body. In this state, the safety valve acts as a waterproof and breathable valve (breathing valve). When the internal pressure of the electromagnetic box is greater than or equal to the burst value set by the safety valve, it is in explosion-proof operating condition. At this time, the safety valve can rapidly discharge gas, thereby quickly reducing the internal pressure of the electromagnetic box and preventing the electromagnetic box body from bursting. In this state, the safety valve provides explosion-proof protection.

[0171] It is understood that, in embodiments not shown, the safety valve may also be located on the side wall or the top cover.

[0172] In an embodiment not shown, the battery compartment may further include a fire extinguisher. The fire extinguisher is fixed to at least one of the side wall, end wall, and top cover. The fire extinguisher is capable of automatically sensing and extinguishing the fire in the event of accidental battery combustion, preventing a fire or explosion.

[0173] like Figure 6 , Figure 7 , Figure 10 and Figure 11As shown, the battery box also includes an end wall cover 240 and a side wall cover 340. The upper end beam 210 and lower end beam 220 of the end wall 200 are connected to the end column 230 to form the outer frame of the end wall. The inner surface of the upper end beam 210, the inner surface of the inner wall 223 of the lower end beam, and the inner surface of the inner wall 233 of the end column are flush with each other to form the inner surface of the outer frame of the end wall. The four sides of the end wall cover 240 are connected to the inner surface of the outer frame of the end wall by a sealed connection method such as continuous welding or bonding.

[0174] The upper side beam 310, lower side beam, and side column 330 of the side wall 300 are connected to form the outer frame of the side wall. The inner surface of the box of the upper side beam 310, the inner surface of the box of the sealing beam inner wall 362, and the inner surface of the box of the side column inner wall 332 are flush with each other to form the inner surface of the box of the outer frame of the side wall. The four sides of the side wall cover plate 340 are connected to the inner surface of the box of the outer frame of the side wall by continuous welding or bonding and other sealing connection methods.

[0175] The aforementioned base plate 130 is connected to the bottom beam support wall 114 and the bottom side beam support wall 124 by continuous welding or bonding and other sealing connection methods on its four sides. The top cover plate 440 and the top cover sealing beam 450 are connected by continuous welding or bonding and other sealing connection methods. Therefore, the top cover outer frame and the top cover sealing beam 450 can be connected by discontinuous welding to reduce welding deformation.

[0176] In embodiments not shown, the top beam and the adjacent top cover sealing beam can be an integral structure. The top side beam and the adjacent top cover sealing beam can also be an integral structure. The top cover panel and the top cover outer frame are sealed together by continuous welding or bonding.

[0177] In embodiments not shown, the four sides of the base plate can also be continuously welded to the inner facade of the bottom end beam box and the inner facade of the bottom side beam box, respectively.

[0178] In this way, when the battery box is in the closed state, a sealed container can be formed to ensure the safe transportation of the battery.

[0179] Some welds in the battery box can be welded using a segmented welding method. Segmented welding involves dividing a long gap into multiple segments and welding portions of each segment. There is a gap between any two welds. This reduces welding deformation and workload. However, when the battery box is closed, these segmented welds may leak gas or liquid. Therefore, after segmented welding, sealant is applied to the welded areas to seal the entire gap and prevent leakage.

[0180] The battery box also includes forklift slots 180 to facilitate forklift operation. When the battery boxes are stacked in the assembled state, the bottom surfaces of the four corners of the chassis of the upper battery box rest on the top surfaces of the four corners of the top cover plate 441. After the top cover sealing strip 460 is compressed, the bottom walls 411 of the top beam and 421 of the top side beam abut against the top plate 334 of the upright to bear the stacking weight. When the battery boxes are stacked in the folded state, the bottom surfaces of the four corners of the chassis of the upper battery box rest on the top surfaces of the four corners of the top cover plate 441, and the bottom walls 411 of the top beam and 421 of the top side beam abut against the top surfaces of the chassis uprights 140 to bear the stacking weight.

[0181] In summary, the battery box features a tightly sealed structure, preventing water damage during battery transport and protecting the batteries from dangerous conditions. The sealed box also prevents the release of harmful gases from a battery fire, thus protecting the environment. Furthermore, the ability to fold the battery box while maintaining a tight seal increases the number of empty boxes that can be transported and stored on return trips, thereby reducing logistics and warehousing costs.

[0182] The battery box has a binding mechanism to prevent the battery from being subjected to vibration, impact, collision and squeezing during transportation, thus preventing the battery from becoming dangerous. The battery box has a safety valve to release pressure in time after the battery catches fire, preventing the battery from exploding. The battery box has a liquid collection tank to ensure the safety of battery transportation in the event of electrolyte leakage. The top cover 400 and side wall 300 of the battery box are removable, thereby forming top opening and side opening, which facilitates the loading and unloading of large batteries by forklift.

[0183] In this article, the inner side of a component's housing refers to the side of that component closest to the center of the chassis when the battery box is in the assembled state. The outer side of a component's housing refers to the side of that component furthest from the center of the chassis when the battery box is in the assembled state.

[0184] The inner surface of a component's housing is the surface of that component closest to the center of the chassis when the battery box is in the assembled state. The outer surface of a component's housing is the surface of that component furthest from the center of the chassis when the battery box is in the assembled state.

[0185] The inner facade of a component is the surface of the component closest to the center of the chassis when the battery box is in the assembled state, and this inner facade is parallel to the height direction of the chassis when the battery box is in the assembled state. The outer facade of a component is the surface of the component furthest from the center of the chassis when the battery box is in the assembled state, and this outer facade is parallel to the height direction of the chassis when the battery box is in the assembled state.

[0186] The inner wall of a component is the wall of that component near the center of the chassis when the battery box is in the assembled state, and the plane containing this inner wall is parallel to the height direction of the chassis when the battery box is in the assembled state. The outer wall of a component is the wall of that component away from the center of the chassis when the battery box is in the assembled state, and the outer wall is parallel to the height direction of the chassis when the battery box is in the assembled state.

[0187] This application has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the scope of the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application. The scope of protection of this application is defined by the appended claims and their equivalents.

[0188] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “component” as used herein may refer to a single part or a combination of multiple parts. Terms such as “installation” or “installation” as used herein may refer to a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

Claims

1. A battery box, characterized in that, The battery box includes: The chassis includes a sidewall hinge seat and a chassis column located at a corner of the chassis. The sidewall hinge seat is connected to the chassis column. Along a first horizontal direction, there is a gap between a portion of the sidewall hinge seat and the chassis column to form an elongated groove extending along the height direction of the chassis. Along a second horizontal direction, the opening of the elongated groove faces the center of the chassis. An end wall, the lower end of which is rotatably connected to the end of the chassis along the second horizontal direction; The side wall has a side wall hinge shaft at its lower end, with an axial direction parallel to the second horizontal direction. The side wall hinge shaft extends into the long groove so that the side wall hinge shaft can move in the long groove along the height direction of the chassis and can rotate in the long groove. A top cover, located at the upper end of the battery box; The chassis also includes a bottom side beam along the first horizontal direction, and the side wall hinge seat is located on the outer side of the bottom side beam away from the center of the chassis; The bottom of the long groove is lower than the top surface of the bottom side beam. When the battery box is in the assembled state, the side wall hinge shaft is located at the bottom of the long groove. The sidewall has an inclined position, and when the sidewall is in the inclined position, along the first horizontal direction, the upper end of the sidewall is further away from the center of the chassis than the lower end of the sidewall. The battery box includes a side wall sealing strip, and the lower end of the side wall has a lower side beam extending along the second horizontal direction. The side wall sealing strip is connected to the lower side beam. Along the thickness direction of the side wall, the side wall sealing strip protrudes to the inner side of the lower side beam. When the battery box is in the assembled state, the side wall hinge shaft is located below the side wall sealing strip, and the side wall sealing strip abuts against the bottom side beam. When the side wall is in the inclined position, the side wall sealing strip moves away from the bottom side beam.

2. The battery box according to claim 1, characterized in that, With the battery box in its assembled state, the side wall hinge axis is located below the end wall.

3. The battery box according to claim 2, characterized in that, The battery box further includes an end post sealing portion. The end of the end wall along the first horizontal direction has an end post, and the end of the side wall along the second horizontal direction has a side post. The end post sealing portion is connected to the end post. Along the first horizontal direction, the end post sealing portion protrudes to the outside of the end post. When the side wall is in the inclined position, the end post sealing portion moves away from the side post. When the battery box is in the assembled state, the inner surface of the side post along the first horizontal direction abuts against the end post sealing portion.

4. The battery box according to claim 3, characterized in that, The end column has an end column sealing groove with an opening facing the end wall along the outer side of the box in the first horizontal direction, and the end column sealing part is disposed in the end column sealing groove.

5. The battery box according to claim 3, characterized in that, The battery box further includes an end beam sealing part, the lower end of the end wall has a lower end beam, the end beam sealing part is connected to the lower end beam, the end beam sealing part protrudes to the outside of the lower end beam along the height direction of the end wall, the end of the chassis along the second horizontal direction has a bottom end beam, and when the battery box is in the assembled state, the end beam sealing part abuts against the top surface of the bottom end beam.

6. The battery box according to claim 5, characterized in that, The lower end beam has an end beam sealing groove with an opening facing the end wall along the height direction of the end wall on the outer side of the box, and the end beam sealing part is disposed in the lower end beam sealing groove.

7. The battery box according to claim 5, characterized in that, The end beam sealing part and the end column sealing part are constructed as a single unit.

8. The battery box according to claim 5, characterized in that, The battery box also includes an end wall hinge assembly, through which the inner vertical wall of the lower end beam box of the lower end beam is rotatably connected to the inner vertical surface of the bottom end beam box of the bottom end beam.

9. The battery box according to claim 1, characterized in that, The lower side beam includes a side wall sealing beam and an outer lower side beam. The side wall sealing beam is connected to the inner end of the outer lower side beam, and the side wall sealing strip is connected to the side wall sealing beam.

10. The battery box according to claim 9, characterized in that, The sidewall sealing beam has a sidewall sealing groove with an opening facing the sidewall and extending along the thickness direction of the sidewall to the inner side of the box, and the sidewall sealing strip is disposed in the sidewall sealing groove.

11. The battery box according to claim 1, characterized in that, The upper end of the sidewall hinge seat has a mounting port communicating with the interior of the long slot. The outer end of the sidewall hinge shaft away from the center of the sidewall has an axial plane. The distance between the axial plane and the axis of the sidewall hinge shaft is less than the radius of the sidewall hinge shaft. When the sidewall is in the inclined position, the axial plane is perpendicular to the first horizontal direction. Along the first horizontal direction, the size of the mounting port is smaller than the outer diameter of the sidewall hinge shaft and larger than the maximum size between the axial plane and the arc surface of the sidewall hinge shaft.

12. The battery box according to claim 1, characterized in that, The top cover includes a top cover frame, a top cover plate, a top cover sealing beam, and a top cover sealing strip. The top wall of the top cover plate covers and connects to the top surface of the top cover frame. The inner side of the top cover frame is connected to the top cover sealing beam. The top cover sealing beam has a top cover sealing groove with an opening facing away from the top wall of the top cover plate. The top cover sealing strip is disposed in the top cover sealing groove and has a continuous rectangular structure. The corners of the top cover frame have stacking angles. Along the thickness direction of the top cover, the stacking angles protrude to the side of the top wall of the top cover plate away from the top cover frame. The stacking angles also protrude to the side of the top cover frame away from the top wall of the top cover plate.

13. The battery box according to claim 12, characterized in that, The top of the side column of the side wall has a column top plate. When the battery box is in the assembled state, the top surface of the end beam of the end wall, the top surface of the side beam of the side wall, and the top surface of the column top plate are flush. The top cover sealing strip abuts against the top surface of the end beam, the top surface of the side beam, and the top surface of the column top plate. The stacking corner is provided on the outer side of the box along the first horizontal direction and the second horizontal direction of the column top plate.

14. The battery box according to claim 12, characterized in that, When the battery box is in a folded state, the end wall and the side wall are folded sequentially to the chassis, the top cover overlaps the top of the chassis column, and the stacking corners are provided on the outer side of the box along the first horizontal direction and the second horizontal direction of the chassis column.

15. The battery box according to claim 1, characterized in that, The battery box also includes a tensioning assembly. The end wall also includes an end vertical beam spaced apart from the end column. The tensioning assembly is connected to the end vertical beam. When the battery box is in the assembled state, the tensioning assembly is used to tension the top cover to the end wall, or The end wall also includes a tensioning assembly fixing plate connected to the end post. The tensioning assembly is connected to the tensioning assembly fixing plate. When the battery box is in the assembled state, the tensioning assembly is used to tension the side wall to the end wall, or The side wall has a side vertical beam separated from the side pillar, and the tensioning assembly is connected to the side vertical beam. When the battery box is in the assembled state, the tensioning assembly is used to tension the top cover to the side wall.

16. The battery box according to claim 1, characterized in that, The side wall also includes a side wall baffle, which is located inside the side column of the side wall along the thickness direction of the side wall and connected to the side column. When the battery box is in the assembled state, the side wall baffle is located inside the end wall along the thickness direction of the end wall.

17. The battery box according to claim 1, characterized in that, The top cover also includes a top cover handle assembly, which is connected to the top cover outer frame of the top cover.

18. The battery box according to claim 1, characterized in that, The chassis also includes a bottom plate, a bottom end beam, and a bottom side beam. The bottom plate is connected to the bottom end beam and the bottom side beam. Along the height direction of the chassis, the bottom plate is located below the top surface of the bottom end beam and the top surface of the bottom side beam to form a liquid collection tank.

19. The battery box according to claim 18, characterized in that, The chassis also includes a drain net assembly, which includes a drain net frame and a mesh. The mesh is located within the area enclosed by the drain net frame and is connected to the drain net frame. The top surface of the drain net assembly is flush with the top surface of the bottom side beam. The drain net frame overlaps with the bottom plate, and the mesh and the bottom plate are spaced apart.

20. The battery box according to claim 18, characterized in that, The chassis also includes a binding part, and the binding part is connected to the inner facade of the bottom end beam box of the bottom end beam and the inner facade of the bottom side beam box of the bottom side beam. The binding part does not protrude from the top surface of the bottom side beam of the bottom side beam.

21. The battery box according to claim 1, characterized in that, The battery box also includes a safety valve, which is fixed to at least one of the end wall, the side wall, and the top cover.

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