CN220544119U - Bracket assembly and battery box - Google Patents

Abstract

The utility model relates to a bracket assembly and a battery box, wherein the bracket assembly comprises a mounting bottom plate and a mounting frame, the mounting frame is mounted on the mounting bottom plate, a positioning structure and a connecting hole are arranged on the mounting frame, and a first mounting hole is arranged on the mounting bottom plate corresponding to the position of the connecting hole. When the box is used, the upper box body is installed in the installation frame and is connected and positioned through the positioning structure, so that the upper box body can be accurately embedded and installed in the installation frame, and the sealing effect between the upper box body and the installation frame is further ensured. The connecting holes are formed in the mounting frame, the first mounting holes corresponding to the connecting holes are formed in the mounting bottom plate, and then the bracket assembly and the lower box body can be connected through the first fasteners arranged in the connecting holes and the first mounting holes.

Description

Bracket assembly and battery box

Technical Field

The utility model relates to the technical field of batteries, in particular to a bracket assembly and a battery box.

Background

The prior bracket assembly generally has the function of supporting and fixing a single-layer battery PACK, and the structure has limited application range and cannot be applied to chassis integrated multi-layer battery PACKs or battery cells to PACK structures. Chinese patent application, publication No. CN210136914U discloses a battery box for a vehicle and a vehicle having the same, the battery box comprising: go up box, lower box sets up go up the below of box and with go up the box and inject battery module installation space, lower box includes: the mounting frame and the bottom supporting plate are arranged in an inner space surrounded by the mounting frame and fixedly connected with the mounting frame, and the mounting frame and the bottom supporting plate are extrusion molding pieces. Through adopting the mounting frame and the bottom plate that are extrusion spare together to inject the lower box through bottom plate and mounting frame, can improve the production efficiency of box down, reduce the manufacturing cost of box down, improve the mechanical properties of box down, with the fixed stability of improvement battery box to battery module, and reduce the manufacturing cost of battery box. The technical scheme is that the upper box body is supported through the lower box body equivalent to the bracket assembly, and the problem that the bracket assembly can not realize the connection and support of the upper box body, the lower box body or the multi-layer box body is solved.

Disclosure of Invention

The utility model provides a bracket assembly for solving the problem that the bracket assembly in the prior art can not realize the connection and support of an upper box body, a lower box body or a plurality of layers of box bodies.

In order to solve the technical problems, the utility model adopts the following technical scheme: the bracket assembly comprises a mounting bottom plate and a mounting frame, wherein the mounting frame is mounted on the mounting bottom plate, a positioning structure and a connecting hole are formed in the mounting frame, and a first mounting hole is formed in the mounting bottom plate corresponding to the position of the connecting hole.

In this technical scheme, when using, go up the box and install in the installing frame to connect the location through location structure, make last box can accurate embedding install in the installing frame, and then guarantee the sealed effect between last box and the installing frame. The connecting holes are formed in the mounting frame, the first mounting holes corresponding to the connecting holes are formed in the mounting bottom plate, and then the bracket assembly and the lower box body can be connected through the first fasteners arranged in the connecting holes and the first mounting holes.

Preferably, the mounting frame comprises a frame and a first reinforcing beam, the frame is mounted on the mounting base plate, the first reinforcing beam is connected to the inner side of the frame, and the positioning structure and the connecting hole are formed in the first reinforcing beam.

Preferably, a step for mounting the upper case is formed on a portion of the upper surface of the rim adjacent to the inner surface, which is recessed downward.

Preferably, a second mounting hole for connecting the lower box body is formed in the mounting bottom plate and located on the outer side of the frame.

Preferably, a first sealing port is formed in the mounting bottom plate and located on the periphery of the second mounting hole, and a first sealing ring is arranged at the first sealing port.

Preferably, the connecting hole is of a dumbbell-like structure, and comprises a first via hole, a second via hole and a third via hole which are sequentially communicated from top to bottom along the thickness direction of the first reinforcing beam, wherein the apertures of the first via hole and the third via hole are larger than those of the second via hole.

Preferably, a first threaded hole is formed in the first reinforcement beam, the positioning structure is a positioning pin, and the positioning pin is in threaded connection with the first threaded hole; the upper end face of the locating pin is provided with a blind hole, and the shape of the blind hole is of a polygonal structure.

Preferably, the frame is of a rectangular structure, the frame comprises two cross beams and two longitudinal beams, the two cross beams are parallel to each other and perpendicular to the longitudinal beams, two ends of the cross beams are respectively connected with one ends of the two longitudinal beams, the first reinforcing beam is parallel to the longitudinal beams, and two ends of the first reinforcing beam are respectively connected to the inner sides of the two cross beams; the mounting frame further comprises a second reinforcing beam, the second reinforcing beam is connected with the first reinforcing beam in an embedded mode, the second reinforcing beam is parallel to the cross beam, two ends of the second reinforcing beam are respectively connected to the inner sides of the two longitudinal beams, a first notch is formed in the bottom of the first reinforcing beam, and a second notch is formed in the bottom of the second reinforcing beam.

The utility model further provides a battery box, which comprises a lower box body, the bracket assembly, the upper box body and the upper cover which are sequentially arranged from bottom to top, wherein a positioning sleeve is arranged on the lower box body, the positioning sleeve stretches into the connecting hole, and a first fastener is connected in the connecting hole and the positioning sleeve; the upper box body is arranged in the frame, a positioning hole is formed in the bottom of the upper box body, and the positioning structure is inserted into the positioning hole; the upper cover is arranged on the upper box body.

Preferably, a second threaded hole is formed in the lower box body corresponding to the position of the second mounting hole, a second fastener is connected in the second mounting hole and the second threaded hole, a sleeve is mounted between the mounting bottom plate and the lower box body, the sleeve is sleeved on the periphery of the second fastener, a second sealing port is formed in the upper end face of the sleeve, a second sealing ring is arranged at the second sealing port, and the second sealing ring is in butt joint with the lower bottom surface of the mounting bottom plate.

Compared with the prior art, the utility model has the beneficial effects that: in the utility model, when in use, the upper box body is embedded and installed in the installation frame and is positioned by the positioning structure arranged on the installation frame, so that the upper box body can be accurately embedded and installed in the installation frame, and the sealing effect between the upper box body and the installation frame is further ensured. The connecting holes are formed in the mounting frame, the first mounting holes corresponding to the connecting holes are formed in the mounting bottom plate, and then the bracket assembly and the lower box body can be connected through the first fasteners arranged in the connecting holes and the first mounting holes.

Drawings

FIG. 1 is a perspective view of a bracket assembly of the present utility model;

FIG. 2 is a schematic view of the structure of the bracket assembly of the present utility model;

FIG. 3 is a partial cross-sectional view taken along the A-A plane in FIG. 2;

fig. 4 is a schematic structural view of the battery box;

FIG. 5 is a schematic view of the structure of the bracket assembly connected to the lower housing;

fig. 6 is a partial enlarged view at B in fig. 5.

In the accompanying drawings: 1. a mounting base plate; 2. a mounting frame; 3. a positioning structure; 4. a connection hole; 5. a second mounting hole; 6. a first sealing port; 41. a first via; 42. a second via; 43. a third via; 24. a first threaded hole; 25. a first notch; 211. a cross beam; 212. a longitudinal beam; 26. a second reinforcing beam; 27. a second notch; 7. a lower box body; 8. an upper case; 9. an upper cover; 71. a second threaded hole; 72. a second fastener; 73. positioning the sleeve; 74. a sleeve; 75. a second sealing port; 21. a frame; 22. a first reinforcing beam; 23. a step.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are orientations or positional relationships indicated by terms "upper", "lower", "left", "right", "long", "short", etc., based on the orientations or positional relationships shown in the drawings, this is merely for convenience in describing the present utility model and simplifying the description, and is not an indication or suggestion that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to specific circumstances.

The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:

example 1

As shown in fig. 1 to 4, a bracket assembly comprises a mounting base plate 1 and a mounting frame 2, wherein the mounting frame 2 is mounted on the mounting base plate 1, a positioning structure 3 and a connecting hole 4 are arranged on the mounting frame 2, and a first mounting hole (not shown in the figure) is arranged on the mounting base plate 1 corresponding to the position of the connecting hole 4. In this embodiment, when using, go up box 8 embedding and install in installing frame 2 to go on connecting the location through locating structure 3 and last box 8 on locating installing frame 2, make last box 8 can accurate embedding install in installing frame 2. Since the first reinforcing beam 22 is provided with the connecting hole 4, and the mounting base plate 1 is provided with the first mounting hole corresponding to the position of the connecting hole 4, then the connection between the bracket assembly and the lower box 7 can be realized through the first fastener installed in the connecting hole 4 and the first mounting hole. It should be noted that the number of the positioning structures 3 and the connection holes 4 may be set as required.

The mounting frame 2 includes a frame 21 and a first reinforcing beam 22, the frame 21 is mounted on the mounting base plate 1, the first reinforcing beam 22 is connected to the inner side of the frame 21, and the positioning structure 3 and the connecting hole 4 are disposed on the first reinforcing beam 22. In this embodiment, when using, go up box 8 embedding and install in installing frame 2 to connect the location through locating structure 3 that locates on installing frame 2, make last box 8 can accurate embedding install in installing frame 2. Since the first reinforcing beam 22 is provided with the connecting hole 4, and the mounting base plate 1 is provided with the first mounting hole corresponding to the position of the connecting hole 4, then the connection between the bracket assembly and the lower box 7 can be realized through the first fastener installed in the connecting hole 4 and the first mounting hole. It should be noted that, due to the arrangement of the first reinforcing beam 22, the strength of the entire frame 21 is ensured, so that the frame 21 can support the heavier upper case 8. The number of first reinforcement beams 22 may be arranged as desired. Specifically, as the weight of the upper case 8 is heavy, the number of the first reinforcing beams 22 is correspondingly increased. It should also be noted that the positioning structure 3 on the first reinforcing beam 22 corresponds to the position of the positioning hole in the bottom of the upper case 8. In order to ensure more stable connection between the bracket assembly and the lower case 7, the number of the connection holes 4 may be set to be plural, and the positions of the connection holes 4 may be determined according to the positions of the first structures connected to the connection holes 4 on the lower case 7. It should also be noted that the positioning structure 3 and the connecting hole 4 may be arranged on the first reinforcement beam 22 in the length direction thereof.

Wherein a step 23 for mounting the upper case 8 is formed by downwardly recessing a portion of the upper surface of the other rim 21 near the inner surface of the rim 21. In this embodiment, a step 23 is formed by downwardly recessing a portion of the upper surface of the frame 21 near the inner surface, the step 23 is substantially L-shaped, and the step 23 facilitates the limit installation of the upper case 8. Specifically, the vertical surface of the step 23 is fitted to the outer peripheral surface of the upper case 8, so that the sealing effect can be achieved. In order to further improve the sealing property of the connection between the frame 21 and the upper case 8, a gasket is further provided between the peripheral surface of the upper case 8 and the vertical surface of the step 23, so that a better sealing effect can be achieved.

In addition, a second mounting hole 5 for connecting the lower case 7 is provided on the mounting base plate 1 and outside the frame 21. The second mounting hole 5 for connecting the lower box body 7 is further formed in the mounting bottom plate 1 and located outside the frame 21, and the second fastening piece 72 is mounted in the second mounting hole 5 and connected with the lower box body 7, so that the stability of connection of the bracket assembly and the lower box body 7 is guaranteed. The number of the second mounting holes 5 may be set to be plural, and the positions of the second mounting holes 5 may be determined according to the positions of the second structures connected to the second mounting holes 5 on the lower case 7.

Wherein, mounting plate 1 is last and be located the week side of second mounting hole 5 and be provided with first sealing port 6, and first sealing port 6 department is provided with first sealing washer. Since the connection with the lower case 7 is required by the second fastening member 72 installed in the second installation hole 5, there is a gap between the second fastening member 72 and the hole edge of the second installation hole 5 during the installation of the second fastening member 72 in the second installation hole 5 and the connection of the lower case 7, which results in the inflow of rainwater into the lower case 7 through the second installation hole 5. In the present embodiment, by providing the first sealing port 6 on the peripheral side of the second mounting hole 5, the first sealing ring is installed in the first sealing port 6, and by the pressing force between the second fastener 72 installed in the second mounting hole 5 and the first sealing ring, the first sealing ring is enabled to seal the gap between the second fastener 72 and the second mounting hole 5, thereby achieving the sealing effect.

In addition, the connection hole 4 has a dumbbell-like structure, and the connection hole 4 includes a first via hole 41, a second via hole 42, and a third via hole 43 that are sequentially connected from top to bottom along the thickness direction of the first reinforcement beam 22, where the apertures of the first via hole 41 and the third via hole 43 are both larger than the aperture of the second via hole 42. In this embodiment, since the apertures of the first via hole 41 and the third via hole 43 are larger than the aperture of the second via hole 42, and the third via hole 43 is disposed at the bottom of the first reinforcement beam 22, the first via hole 41 is disposed at the top of the first reinforcement beam 22, when the bracket assembly is connected with the lower case 7, the positioning sleeve 73 of the sorghum on the lower case 7 can be inserted into the third via hole 43 through the first mounting hole, the bracket assembly can be pre-positioned by using the insertion between the positioning sleeve 73 and the third via hole 43, and then the bracket assembly can be locked with the lower case 7 by using the first fastener to sequentially extend into the second via hole 42, the positioning sleeve 73 and the first mounting hole from the first via hole 41 and then using the locking nut to be in threaded connection with the first fastener. It should be noted that, the first fastener may be a bolt structure, and since the first via hole 41 is disposed on the top surface of the first reinforcement beam 22, the first via hole 41 can accommodate a bolt head, so as to prevent the bolt head from protruding out of the upper surface of the first reinforcement beam 22.

The first reinforcement beam 22 is provided with a first threaded hole 24, the positioning structure 3 is a positioning pin, and the positioning pin is in threaded connection with the first threaded hole 24; the upper end face of the locating pin is provided with a blind hole, and the shape of the blind hole is of a polygonal structure. In the present embodiment, since the positioning pin is threadedly mounted in the first screw hole 24 and the circumferential surface of the positioning pin is circular, it is difficult to screw the positioning pin into the first screw hole 24. Thus, blind holes are provided in the end face of the positioning pin, which blind holes are polygonal in shape (inner triangle, inner hexagon, etc.), so that the positioning pin can be screwed into the first threaded hole 24 by means of a screwdriver head adapted to the polygonal blind holes.

The frame 21 is in a rectangular structure, the frame 21 comprises two cross beams 211 and two longitudinal beams 212, the two cross beams 211 are parallel to each other and perpendicular to the longitudinal beams 212, two ends of the cross beams 211 are respectively connected with one ends of the two longitudinal beams 212, the first reinforcing beam 22 is parallel to the longitudinal beams 212, and two ends of the first reinforcing beam 22 are respectively connected to the inner sides of the two cross beams 211. It should be noted that, since the two ends of the first reinforcement beam 22 are respectively connected to the inner sides of the two beams 211, the structural strength of the whole frame 21 can be enhanced, and the bearing capacity of the whole frame 21 can be improved. It should be noted that, since the upper case 8 needs to be installed in the frame 21, the frame 21 has a rectangular structure, and the shape of the frame 21 is adapted to the shape of the upper case 8. The mounting frame 2 further comprises a second reinforcing beam 26, the second reinforcing beam 26 is connected with the first reinforcing beam 22 in an embedded mode, the second reinforcing beam 26 is parallel to the cross beam 211, two ends of the second reinforcing beam 26 are respectively connected to the inner sides of the two longitudinal beams 212, and a second notch 27 is formed in the bottom of the second reinforcing beam 26. In this embodiment, since the two ends of the second reinforcing beam 26 are respectively connected to the inner sides of the two longitudinal beams 212, the structural strength of the entire frame 21 can be further enhanced, and the bearing capacity of the entire frame 21 can be improved. When one second reinforcement beam 26 and one first reinforcement beam 22 are provided, the first reinforcement beam 22 and the second reinforcement beam 26 are substantially cross-shaped; when two second reinforcing beams 26 and two first reinforcing beams 22 are provided, the first reinforcing beams 22 and the second reinforcing beams 26 are substantially in a well-like structure. The first reinforcement beam 22 is provided with a clamping groove at the bottom connected with the second reinforcement beam 26, and is clamped on the periphery of the second reinforcement beam 26 by the clamping groove, so that the first reinforcement beam 22 is connected with the second reinforcement beam 26 in an embedded manner. In addition, since the first reinforcing beam 22 and the second reinforcing beam 26 divide the frame 21 into a plurality of cavities, the bottom of the first reinforcing beam 22 is provided with the first notch 25, the bottom of the second reinforcing beam 26 is provided with the second notch 27, and the first notch 25 and the second notch 27 are used for facilitating penetration of the wire harness and the copper bars. In the case where the plurality of first reinforcing beams 22 and second reinforcing beams 26 are provided in the frame 21, the first notches 25 at the bottom of each first reinforcing beam 22 are preferably positioned on the same line, and the second notches 27 at each second reinforcing beam 26 are preferably positioned on the same line.

Example 2

As shown in fig. 4, a battery box comprises a lower box body 7, a bracket assembly as in embodiment 1, an upper box body 8 and an upper cover 9 which are sequentially arranged from bottom to top, wherein a positioning sleeve 73 is arranged on the lower box body 7, the positioning sleeve 73 extends into a connecting hole 4, and a first fastener is connected in the connecting hole 4 and the positioning sleeve 73; the upper box body 8 is arranged in the frame 21, a positioning hole is formed in the bottom of the upper box body 8, and the positioning structure 3 is inserted into the positioning hole; the upper cover 9 is mounted on the upper case 8. In this embodiment, go up box 8 embedding and install in frame 21, can be provided with sealed the pad in the junction of frame 21 and last box 8 to guarantee the leakproofness between last box 8 and the frame 21, connect the location through locating structure 3 on locating first stiffening beam 22, make and go up box 8 can accurate embedding install in frame 21. Since the first reinforcing beam 22 is provided with the connecting hole 4, and the mounting base plate 1 is provided with the first mounting hole corresponding to the position of the connecting hole 4, the positioning sleeve 73 extends into the connecting hole 4 from the bottom through the first mounting hole, and then the connection between the bracket assembly and the lower box 7 can be realized through the first fastener installed in the connecting hole 4 and the positioning sleeve 73. It should be noted that the first fastener may be a bolt structure.

Example 3

Unlike embodiment 2, a second screw hole 71 is provided in the lower case 7 corresponding to the second mounting hole 5, and a second fastener 72 is connected to the second mounting hole 5 and the second screw hole 71. The second mounting hole 5 for connecting the lower box body 7 is arranged on the mounting bottom plate 1 and positioned outside the frame 21, and the second fastener 72 is mounted in the second mounting hole 5 and connected with the second threaded hole 71 in the lower box body 7, so that the stability of the connection of the bracket assembly and the lower box body 7 is ensured. It should be noted that, the second fastener 72 may be a bolt structure, and an upper end surface of the bolt structure of the second fastener 72 may be provided with a threaded hole, in which a lifting lug may be installed, so as to facilitate lifting. A first sealing port 6 is arranged on the mounting bottom plate 1 and positioned on the periphery side of the second mounting hole 5, and a first sealing ring is arranged at the first sealing port 6. A sleeve 74 is arranged between the mounting bottom plate 1 and the lower box body 7, the sleeve 74 is sleeved on the periphery of the second fastening piece 72, a second sealing port 75 is formed in the upper end face of the sleeve 74, a second sealing ring is arranged at the second sealing port 75, and the second sealing ring is abutted to the lower bottom surface of the mounting bottom plate 1. It should be noted that, since the second fastener 72 presses the first seal ring, the first seal ring can seal the gap between the second mounting hole 5 and the second fastener 72, thereby achieving the upper seal of the bracket assembly. And the upper end surface of the sleeve 74 is provided with a second sealing port 75, a second sealing ring is arranged at the second sealing port 75, and when the second fastener 72 is in threaded connection with the second threaded hole 71 on the lower box body 7 through the second mounting hole 5 and the sleeve 74, the second sealing ring deforms and abuts against the lower surface of the mounting bottom plate 1 to realize lower sealing of the bracket assembly. The sealing effect of the lower box 7 is ensured by the upper seal and the lower seal.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A bracket assembly, characterized in that: the bracket assembly comprises a mounting base plate (1) and a mounting frame (2), wherein the mounting frame (2) is mounted on the mounting base plate (1), a positioning structure (3) and a connecting hole (4) are arranged on the mounting frame (2), and a first mounting hole is formed in the mounting base plate (1) corresponding to the position of the connecting hole (4).

2. The bracket assembly of claim 1, wherein: the mounting frame (2) comprises a frame (21) and a first reinforcing beam (22), wherein the frame (21) is mounted on the mounting base plate (1), the first reinforcing beam (22) is connected to the inner side of the frame (21), and the positioning structure (3) and the connecting hole (4) are formed in the first reinforcing beam (22).

3. The bracket assembly of claim 2, wherein: the part of the upper surface of the frame (21) close to the inner surface of the frame (21) is downwards recessed to form a step (23) for installing the upper box body.

4. The bracket assembly of claim 2, wherein: and a second mounting hole (5) for connecting the lower box body is formed in the mounting bottom plate (1) and located outside the frame (21).

5. The bracket assembly of claim 4, wherein: the mounting base plate (1) is provided with a first sealing port (6) on the periphery of the second mounting hole (5), and a first sealing ring is arranged at the first sealing port (6).

6. The bracket assembly of claim 2, wherein: the connecting hole (4) is of a dumbbell-like structure, the connecting hole (4) comprises a first through hole (41), a second through hole (42) and a third through hole (43) which are sequentially communicated from top to bottom along the thickness direction of the first reinforcing beam (22), and the apertures of the first through hole (41) and the third through hole (43) are larger than those of the second through hole (42).

7. The bracket assembly of claim 2, wherein: the first reinforcement beam (22) is provided with a first threaded hole (24), the positioning structure (3) is a positioning pin, and the positioning pin is in threaded connection with the first threaded hole (24); the upper end face of the locating pin is provided with a blind hole, and the shape of the blind hole is of a polygonal structure.

8. The bracket assembly of any one of claims 2 to 7, wherein: the frame (21) is of a rectangular structure, the frame (21) comprises two cross beams (211) and two longitudinal beams (212), the two cross beams (211) are parallel to each other and perpendicular to the longitudinal beams (212), two ends of the cross beams (211) are respectively connected with one ends of the two longitudinal beams (212), a first reinforcing beam (22) is parallel to the longitudinal beams (212), and two ends of the first reinforcing beam (22) are respectively connected to the inner sides of the two cross beams (211); the mounting frame (2) further comprises a second reinforcing beam (26), the second reinforcing beam (26) is connected with the first reinforcing beam (22) in an embedded mode, the second reinforcing beam (26) is parallel to the cross beam (211), two ends of the second reinforcing beam (26) are respectively connected to the inner sides of the two longitudinal beams (212), and a first notch (25) is formed in the bottom of the first reinforcing beam (22); the bottom of the second stiffening beam (26) is provided with a second notch (27).

9. A battery box, which is characterized by comprising a lower box body (7), a bracket assembly, an upper box body (8) and an upper cover (9) which are sequentially arranged from bottom to top, wherein a positioning sleeve (73) is arranged on the lower box body (7), the positioning sleeve (73) stretches into the connecting hole (4), and a first fastener is connected in the connecting hole (4) and the positioning sleeve (73); the upper box body (8) is arranged in the frame (21), a positioning hole is formed in the bottom of the upper box body (8), and the positioning structure (3) is inserted into the positioning hole; the upper cover (9) is arranged on the upper box body (8).

10. The battery box according to claim 9, wherein a second threaded hole (71) is formed in the lower box body (7) corresponding to the second mounting hole (5), a second fastener (72) is connected in the second mounting hole (5) and the second threaded hole (71), a sleeve (74) is mounted between the mounting base plate (1) and the lower box body (7), the sleeve (74) is sleeved on the periphery of the second fastener (72), a second sealing hole (75) is formed in the upper end face of the sleeve (74), and a second sealing ring is arranged at the second sealing hole (75) and is abutted to the lower bottom face of the mounting base plate (1).