Waterproof box, battery pack assembly and vehicle

Abstract

The utility model provides a waterproof box, a battery pack assembly and a vehicle. According to one embodiment of the invention, the waterproof box comprises a box body, a box cover and a sealing assembly, the box body forms a containing cavity used for containing objects and is provided with an opening, the box body is provided with a first sealing groove at the opening, and the first sealing groove extends in the circumferential direction of the opening; the box cover covers the opening and is fixedly connected with the box body, the box cover is provided with a second sealing groove corresponding to the first sealing groove, and the second sealing groove extends in the circumferential direction of the box cover; the sealing assembly comprises an annular sealing column and a sealing ring formed on the peripheral side of the sealing column, one end of the sealing column is inserted into the first sealing groove, the other end of the sealing column is inserted into the second sealing groove, and the sealing ring is clamped between the box body and the box cover. According to the scheme, the sealing performance between the box cover and the box body can be enhanced, and the waterproof performance of the waterproof box is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery pack waterproof structures, and more specifically, to a waterproof box, a battery pack assembly and a vehicle. Background Art

[0002] During use, electronic products such as battery packs need to have good waterproof and dustproof properties. The strength of the waterproof function will affect the function and safety of the battery pack.

[0003] In the related art, the battery pack is waterproofed by using a waterproof box, which includes a box body and a box cover. The battery pack is accommodated in the box body, and a gap is reserved between the box cover and the box body. The operator applies glue to the gap to achieve the sealing of the box cover and the box body. However, during the gluing process, if the glue is uneven or the gluing position is inaccurate, the waterproof box may leak glue, resulting in poor sealing effect and affecting the waterproof performance. Utility Model Content

[0004] The present application provides a waterproof box, a battery pack assembly and a vehicle, which can enhance the sealing between the box cover and the box body and improve the waterproof performance.

[0005] In a first aspect, the present application provides a waterproof box, comprising: a box body, forming a accommodating cavity for accommodating objects and having an opening, the box body being provided with a first sealing groove at the opening, the first sealing groove extending along the circumference of the opening; a box cover, covering the opening and fixedly connected to the box body, the box cover being provided with a second sealing groove corresponding to the first sealing groove, the second sealing groove extending along the circumference of the box cover; and a sealing assembly, comprising an annular sealing column and a sealing ring formed on the circumference of the sealing column, one end of the sealing column being inserted into the first sealing groove, and the other end being inserted into the second sealing groove, and the sealing ring being clamped between the box body and the box cover.

[0006] Optionally, the sealing ring includes a first sealing portion and a second sealing portion, wherein the first sealing portion is formed on the inner side of the sealing column, and the second sealing portion is formed on the outer side of the sealing column.

[0007] Optionally, the first sealing portion, the second sealing portion and the sealing column are integrally formed; and / or

[0008] The first sealing part, the second sealing part and the sealing column are all made of one of rubber, fluororubber, silicone and tetrafluoroethylene.

[0009] Optionally, the sealing assembly further includes an annular sealing member, which is located on the inner side of the sealing ring and is sandwiched between the box body and the box cover.

[0010] Optionally, the annular sealing member is fixedly connected to the box body, located on the inner side of the first sealing groove, and abuts against the bottom of the box cover.

[0011] Optionally, the box cover is further provided with a mounting groove for mounting components, the mounting groove is recessed toward a side away from the accommodating cavity, and a portion of the annular sealing member is located in the mounting groove and abuts against the box cover.

[0012] Optionally, the accommodating cavity is used to accommodate a battery pack; the waterproof box also includes a wiring barrel for passing a connecting wire, the wiring barrel is protruding from the outer wall of the box body and is connected to the accommodating cavity, the inner wall of the wiring barrel is provided with a sealing ring, and the sealing ring is used to be mounted on the outer peripheral wall of the connecting wire.

[0013] Optionally, a plurality of the sealing rings are provided, and the plurality of the sealing rings are spaced apart along the length direction of the wiring barrel.

[0014] In a second aspect, the present application provides a battery pack assembly, comprising:

[0015] Battery pack; and

[0016] In the waterproof box as described in any of the above items, the battery pack is accommodated in the accommodating cavity.

[0017] Optionally, the battery pack assembly also includes a vibration damping assembly, which includes a connecting structure, a first buffer member and a second buffer member. The connecting structure is arranged on the bottom wall of the box body and is fixedly connected to the battery pack. The box body includes a first side wall and a second side wall that are oppositely arranged. The first buffer member is clamped between the first side wall and the connecting structure, and the second buffer member is clamped between the second side wall and the connecting structure.

[0018] Optionally, the first buffer member has at least one bend; and / or

[0019] The second buffer member is provided with at least one bend.

[0020] Optionally, the first buffer member includes a first connecting surface and a second connecting surface arranged in parallel, the first connecting surface is in contact with the first side wall, the second connecting surface is in contact with the connecting structure, and at least one bend is provided between the first connecting surface and the second connecting surface; and / or

[0021] The second buffer member includes a third connecting surface and a fourth connecting surface which are arranged in parallel, the third connecting surface is in contact with the second side wall, the fourth connecting surface is in contact with the connecting structure, and at least one bend is arranged between the third connecting surface and the fourth connecting surface.

[0022] Optionally, the connecting structure includes a first connecting block and a second connecting block arranged at intervals, the first connecting block and the second connecting block are both arranged on the bottom wall of the box body and fixedly connected to the bottom of the battery pack; wherein the first buffer member is clamped between the first connecting block and the first side wall, and the second buffer member is clamped between the second connecting block and the second side wall.

[0023] Optionally, the vibration damping assembly further includes a vibration damping pad, which is located on the bottom wall of the box body, fixedly connects the first connecting block and the second connecting block, and abuts against the bottom of the battery pack.

[0024] Optionally, the vibration reduction assembly further includes a pressure plate and an elastic member, wherein the elastic member connects the pressure plate and the box cover, the elastic member is in a compressed state, and the pressure plate presses against the top of the battery pack.

[0025] Optionally, the vibration reduction assembly further includes a guide rod, one end of which is fixedly connected to the box cover, and the other end of which extends toward the top of the battery pack, and the elastic member includes a spring, which is sleeved on the guide rod.

[0026] Optionally, the guide rod is configured as a telescopic rod that can be extended and retracted along its length direction, one end of the telescopic rod is fixedly connected to the box cover, and the other end is connected to the pressure plate, and the spring is sleeved on the telescopic rod.

[0027] In a third aspect, the present application provides a vehicle, comprising:

[0028] The waterproof box as described in any of the above items; or the battery pack assembly as described in any of the above items.

[0029] The waterproof box, battery pack assembly and vehicle provided by the present application have at least the following advantages:

[0030] When the sealing column is inserted into the first sealing groove and the second sealing groove, the sealing column itself can form a continuous sealing interface. At the same time, since the sealing ring is formed on the peripheral side of the sealing column, the sealing ring will be compressed by the box cover and the box body and fill in the small gap between the box body and the box cover. Therefore, the sealing column and the sealing ring can jointly seal the gap between the box body and the box cover, thereby improving the overall waterproof effect of the waterproof box. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a waterproof box shown in an embodiment;

[0032] Figure 2 It is a schematic diagram of the exploded structure of a waterproof box shown in an embodiment;

[0033] Figure 3 yes Figure 2An enlarged structural diagram of the middle box cover, the sealing assembly and the box body at their end corners;

[0034] Figure 4 is a schematic cross-sectional structural diagram of a wiring barrel shown in an embodiment;

[0035] Figure 5 is a schematic diagram of a top view of a waterproof box shown in an embodiment;

[0036] Figure 6 yes Figure 5 Schematic diagram of the cross-section structure along AA;

[0037] Figure 7 It is a schematic diagram of the connection structure between the box cover and the pressure plate shown in an embodiment.

[0038] Explanation of the reference numerals: 10, box body; 11, first sealing groove; 12, accommodating chamber; 13, opening; 20, box cover; 21, second sealing groove; 22, mounting groove; 31, sealing column; 32, sealing ring; 321, first sealing part; 322, second sealing part; 33, annular seal; 411, first connecting block; 412, second connecting block; 42, first buffer member; 43, second buffer member; 44, vibration damping pad; 441, vibration damping groove; 45, pressure plate; 46, elastic member; 47, guide rod; 50, wiring barrel; 51, sealing ring; 60, connecting wire; 70, battery pack. DETAILED DESCRIPTION

[0039] The embodiments of the present application provide a waterproof box, a battery pack assembly and a vehicle. The waterproof box, the battery pack assembly and the vehicle are described in detail below with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations may be combined with each other.

[0040] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic structural diagram of a waterproof box shown in an embodiment; Figure 2: is a schematic diagram of the exploded structure of a waterproof box shown in an embodiment. The waterproof box includes a box body 10, a box cover 20 and a sealing assembly. The box body 10 forms a receiving cavity 12 for accommodating objects and has an opening 13, wherein the opening 13 can be located at the top of the box body 10, or at the side or bottom of the box body 10. The objects include but are not limited to the battery pack 70. The box body 10 is provided with a first sealing groove 11 at the opening 13, and the first sealing groove 11 extends along the circumference of the opening 13. The box cover 20 is covered on the opening 13 and is fixedly connected to the box body 10, and the fixing methods include but are not limited to bolt connection and clamping. The box cover 20 is provided with a second sealing groove 21 corresponding to the first sealing groove 11, and the second sealing groove 21 extends along the circumference of the box cover 20; the sealing assembly includes an annular sealing column 31 and a sealing ring 32 formed on the circumference of the sealing column 31, one end of the sealing column 31 is inserted into the first sealing groove 11, and the other end is inserted into the second sealing groove 21, the sealing ring 32 is sandwiched between the box body 10 and the box cover 20, and together with the sealing column 31, seals the gap between the box body 10 and the box cover 20 at the opening 13.

[0041] It can be seen from the above description that when the sealing column 31 is inserted into the first sealing groove 11 and the second sealing groove 21, the sealing column 31 itself can form a continuous sealing interface. At the same time, since the sealing ring 32 is formed on the peripheral side of the sealing column 31, the sealing ring 32 will be compressed by the box cover 20 and the box body 10 and fill in the small gap between the box body 10 and the box cover 20. Therefore, the sealing column 31 and the sealing ring 32 can jointly seal the gap between the box body 10 and the box cover 20, thereby improving the overall waterproof effect of the waterproof box. In addition, compared with the gluing seal in the related art, the sealing assembly between the box cover 20 and the box body 10 in this solution is easier to disassemble and can be reused.

[0042] Please refer to Figure 3 Combined with Figure 2 , Figure 3 yes Figure 2 The locally enlarged structural schematic diagram shown in FIG. Figure 3 for Figure 2A schematic diagram of the enlarged structure of the middle box cover 20, the sealing assembly and the box body 10 at its end corner; In one embodiment, the sealing ring 32 includes a first sealing portion 321 and a second sealing portion 322, the first sealing portion 321 is formed on the inner side of the sealing column 31, and the second sealing portion 322 is formed on the outer side of the sealing column 31. In this way, the first sealing portion 321 and the second sealing portion 322 can form two sealing barriers, further enhancing the sealing between the box body 10 and the box cover 20. At the same time, the design of the first sealing portion 321 and the second sealing portion 322 can also increase the surface area of ​​the entire sealing ring 32, thereby dispersing pressure and reducing wear to improve durability. It should be noted that the above-mentioned inner side refers to "the side of the sealing column 31 close to the center of the opening 13", and the above-mentioned outer side refers to "the side of the sealing column 31 away from the center of the opening 13".

[0043] In a further embodiment, the first sealing portion 321, the second sealing portion 322 and the sealing column 31 are integrally formed, so that there is no seam or connection point between the first sealing portion 321, the second sealing portion 322 and the sealing column 31, thereby ensuring the compactness and integrity of the structure, and being able to more effectively prevent the intrusion of moisture, dust and other pollutants, thereby improving the airtightness. In addition, the integrally formed first sealing portion 321, the second sealing portion 322 and the sealing column 31 can also simplify the installation process and improve the installation efficiency.

[0044] The materials of the first sealing part 321, the second sealing part 322 and the sealing column 31 are all selected from rubber, fluororubber, silicone and tetrafluoroethylene. Rubber, fluororubber, silicone and tetrafluoroethylene all have good elasticity and can be deformed under pressure to fill the gap between the box body 10 and the box cover 20, thereby sealing the box body 10 and the box cover 20. Of course, in some other embodiments, the first sealing part 321, the second sealing part 322 and the sealing column 31 can be manufactured separately. In addition, the materials of the first sealing part 321, the second sealing part 322 and the sealing column 31 can also be polyurethane, acrylate, etc., but are not limited thereto.

[0045] like Figures 1 to 3 In the illustrated embodiment, the box body 10 and the box cover 20 are both rectangular, and correspondingly, the extension paths of the first sealing groove 11, the second sealing groove 21, the sealing column 31, the first sealing portion 321 and the second sealing portion 322 are also rectangular. The cross-sectional shape of the sealing column 31 can be a cylinder, a truncated cone, etc., and the shapes of the first sealing groove 11 and the second sealing groove 21 and the sealing column 31 can correspond. The first sealing portion 321 and the second sealing portion 322 are both strip-shaped, and are respectively located on the inner side and the outer side of the sealing column 31.

[0046] In one embodiment, please continue to refer to Figures 1 to 3The sealing assembly further includes an annular seal 33, which is located on the inner side of the sealing ring 32 and is sandwiched between the box body 10 and the box cover 20. In this way, the annular seal 33 can provide an additional sealing effect, ensuring that there is no gap between the box body 10 and the box cover 20, and preventing external substances such as water and dust from entering the accommodating cavity 12. The annular seal 33 can be a sealing strip connected end to end, but is not limited thereto.

[0047] In one embodiment, the annular seal 33 is fixedly connected to the box body 10, located on the inner side of the first sealing groove 11, and abuts against the bottom of the box cover 20. The annular seal 33 is fixedly connected to the box body 10 so that the annular seal 33 will not fall off or shift during long-term use, thereby maintaining its continuous sealing performance.

[0048] In one embodiment, the box cover 20 is further provided with a mounting groove 22 for mounting components, the mounting groove 22 is recessed toward the side away from the accommodating cavity 12, and a portion of the annular seal 33 is located in the mounting groove 22 and abuts against the box cover 20. In this way, the mounting groove 22 can provide an additional space for facilitating the installation of components without affecting the sealing effect of the annular seal 33.

[0049] The above-mentioned components include but are not limited to a pressing structure, which is connected to the bottom of the box cover 20 and is used to press the object in the accommodating cavity 12 so that the object is stably installed in the accommodating cavity 12 .

[0050] Please refer to Figure 4 , Figure 4 : is a schematic diagram of the cross-sectional structure of the wiring barrel 50 shown in an embodiment. In one embodiment, when the accommodating cavity 12 is used to accommodate the battery pack 70, that is, the above-mentioned object is the battery pack 70, the waterproof box also includes a wiring barrel 50 for the connection line 60 to pass through, the wiring barrel 50 is protruding from the outer wall of the box body 10, and is connected to the accommodating cavity 12. The inner wall of the wiring barrel 50 is provided with a sealing ring 51, and the sealing ring 51 is used to abut the outer periphery of the connection line 60. The wiring barrel 50 can provide a threading channel for the connection line 60, so that the connection line 60 can penetrate into the accommodating cavity 12 to connect the battery pack 70; the sealing ring 51 can form an effective seal with the outer periphery of the connection line 60 by abutting the outer periphery of the connection line 60, preventing external substances such as moisture and dust from entering the accommodating cavity 12 through the connection line 60.

[0051] In a further embodiment, a plurality of sealing rings 51 are provided, and the plurality of sealing rings 51 are arranged at intervals along the length direction of the wire barrel 50. The arrangement of the plurality of sealing rings 51 can ensure that the connecting wire 60 is tightly sealed at multiple positions during the process of passing through the wire barrel 50. Even if one sealing ring 51 is slightly worn or deformed, the other sealing rings 51 can still maintain the overall sealing effect.

[0052] The material of the sealing ring 51 can be any one of rubber, fluororubber, silicone, and tetrafluoroethylene, but is not limited thereto. In addition, the sealing ring 51 can be integrally formed with the wiring barrel 50, but is not limited thereto.

[0053] refer to Figure 5 and Figure 6 An embodiment of the present application further provides a battery pack assembly, including a battery pack 70 and the waterproof box described in any of the above embodiments, and the battery pack 70 is installed in the accommodating cavity 12.

[0054] In one embodiment, the battery pack assembly also includes a vibration reduction assembly, which includes a connecting structure, a first buffer member 42 and a second buffer member 43. The connecting structure is arranged on the bottom wall of the box body 10 and is fixedly connected to the bottom of the battery pack 70. The box body 10 includes a first side wall and a second side wall that are arranged opposite to each other. The first buffer member 42 is clamped between the first side wall and the connecting structure, and the second buffer member 43 is clamped between the second side wall and the connecting structure.

[0055] From the above description, it can be seen that the connection structure is located on the bottom wall of the box body 10 and is fixedly connected to the bottom of the battery pack 70. The connection structure can provide a stable connection point to connect the first buffer 42 and the second buffer 43 to the battery pack 70 respectively. When the battery pack 70 is subjected to external impact, the first buffer 42 and the second buffer 43 can absorb part of the energy to reduce the impact of these impacts on the battery, thereby improving the safety and stability of the battery pack 70.

[0056] The connection structure may be an integrally formed connection sheet, connection block, etc., or two separately arranged connection sheets, two connection blocks, etc. The first buffer 42 and the second buffer 43 may be elastic blocks, elastic sheets, etc., but are not limited thereto.

[0057] In one embodiment, the first buffer member 42 is provided with at least one bend. By providing at least one bend, the deformation capacity of the first buffer member 42 can be improved, and the absorption capacity of the first buffer member 42 to external impact can be increased, so that the energy from the external impact can be more effectively buffered and dispersed. Similarly, the second buffer member 43 can also be provided with at least one bend to more effectively buffer the external impact force.

[0058] In a specific embodiment, the first buffer 42 includes a first connecting surface and a second connecting surface arranged in parallel, the first connecting surface is in contact with the first side wall, the second connecting surface is in contact with the connecting structure, and at least one bend is provided between the first connecting surface and the second connecting surface. The first buffer 42 is connected to the first side wall through the first connecting surface, forming a surface contact with the first side wall, and is connected to the connecting structure through the second connecting surface, forming a surface contact with the connecting structure, which can effectively transmit force and pressure, so that the first buffer 42 can better absorb and disperse the energy from the external impact. Similarly, the second buffer 43 may include a third connecting surface and a fourth connecting surface arranged in parallel, the third connecting surface is in contact with the second side wall, the fourth connecting surface is in contact with the connecting structure, and at least one bend is provided between the third connecting surface and the fourth connecting surface.

[0059] In one embodiment, the first buffer member 42 may be a Z-shaped buffer strip, one end of which has the above-mentioned first connection surface, the other end of which has the second connection surface, and a bend is formed at both ends. The second buffer member 43 is also a Z-shaped buffer strip, one end of which has the above-mentioned third connection surface, the other end of which has the fourth connection surface, and a bend is formed at both ends.

[0060] In one embodiment, the connection structure includes a first connection block 411 and a second connection block 412 which are arranged at intervals. The first connection block 411 and the second connection block 412 are both arranged on the bottom wall of the accommodating cavity 12 and fixedly connected to the bottom of the battery pack 70. The first buffer 42 is sandwiched between the first connection block 411 and the first side wall, and the second buffer 43 is sandwiched between the second connection block 412 and the second side wall. Setting the connection structure into a separated first connection block 411 and a second connection block 412 can more effectively utilize materials, reduce material waste, and save costs.

[0061] In one embodiment, the vibration reduction assembly further includes a vibration reduction pad 44 , which is located on the bottom wall of the accommodating cavity 12 , fixedly connected to the first connecting block 411 and the second connecting block 412 , and abuts against the bottom of the battery pack 70 .

[0062] It can be seen from the above description that the vibration-damping pad 44 is fixedly connected to the first connecting block 411 and the second connecting block 412, which can increase the overall stability and reliability of the connection structure. At the same time, the vibration-damping pad 44 is located on the bottom wall of the accommodating cavity 12 and abuts against the bottom of the battery pack 70, which can support and protect the battery pack 70, and can buffer the up and down bumps of the battery pack 70, and try to avoid the battery pack 70 from being damaged due to bumps and vibrations.

[0063] In one embodiment, the vibration damping pad 44 is a semi-enclosed structure having a vibration damping groove 441, and the opening 13 of the vibration damping groove 441 is located on the side of the vibration damping pad 44 away from the battery pack 70. The vibration damping groove 441 can better absorb and alleviate the impact force, thereby improving the protection effect on the battery pack 70.

[0064] Please refer to Figure 7 , Figure 7 It is a schematic diagram of the connection structure between the box cover and the pressure plate shown in an embodiment. In one embodiment, the vibration reduction assembly also includes a pressure plate 45 and an elastic member 46, the elastic member 46 connects the pressure plate 45 and the box cover 20, the elastic member 46 is in a compressed state, and the pressure plate 45 presses on the top of the battery pack 70. In this way, when the box cover 20 is buckled at the opening 13 of the box body 10, the elastic member 46 can push the pressure plate 45 toward the battery pack 70, and the pressure plate 45 can press the battery pack 70 under the elastic force of the elastic member 46 to limit the shaking of the battery pack 70 in the accommodating cavity 12. In addition, when the battery pack 70 is subjected to external impact, the spring can undergo a certain deformation to absorb the impact energy and reduce the impact of the external impact on the battery pack 70. Among them, the elastic member 46 can be a spring, a shrapnel, etc., but is not limited to this.

[0065] In one embodiment, the vibration reduction assembly further includes a guide rod 47, one end of which is fixedly connected to the box cover 20, and the other end of which extends toward the top of the battery pack 70, and the elastic member 46 includes a spring, which is sleeved on the guide rod 47. The guide rod 47 has a positioning and guiding function, so that the spring maintains a fixed direction and position during the compression process, ensuring that the pressing plate 45 presses against the top of the battery pack 70.

[0066] In one embodiment, when the box cover 20 is provided with a mounting groove 22 , the guide rod 47 and a part of the spring structure may be located in the mounting groove 22 .

[0067] In one embodiment, the guide rod 47 is configured as a telescopic rod that can be extended along its length, one end of the telescopic rod is fixedly connected to the box cover 20, and the other end is connected to the pressing plate 45, and a spring is sleeved on the telescopic rod. The telescopic rod can be adaptively adjusted according to the actual distance between the box cover 20 and the battery pack 70 to adapt to various models of battery packs 70.

[0068] Among them, the telescopic rod can be a mechanical telescopic rod (the telescopic function is realized through a mechanical structure such as a slider), a hydraulic telescopic rod, a pneumatic telescopic rod, etc.

[0069] In one embodiment, a plurality of telescopic rods may be provided, and the springs correspond to the telescopic rods, and the corresponding springs are sleeved on the corresponding telescopic rods. For example, four telescopic rods may be provided, and four springs are correspondingly provided, and each telescopic rod is sleeved with a spring. Alternatively, three telescopic rods may be provided, and three springs are correspondingly provided, and each telescopic rod is sleeved with a spring.

[0070] An embodiment of the present application also provides a vehicle, including the waterproof box or battery pack assembly described in any of the above embodiments. The vehicle may be a car, truck, van, sport utility vehicle, or any other type of vehicle with a battery. In one embodiment, the vehicle is a high-voltage traction battery-powered electric vehicle (e.g., a battery electric vehicle (BEV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), etc.). In another embodiment, the vehicle is an autonomous vehicle that controls the maneuvering functions of the vehicle without direct input from a human driver.

[0071] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A waterproof box, characterized in that: include: A box body (10) is formed with a receiving cavity (12) for receiving an object and has an opening (13), wherein the box body (10) is provided with a first sealing groove (11) at the opening (13), and the first sealing groove (11) extends along the circumference of the opening (13); a box cover (20), which is arranged on the opening (13) and is fixedly connected to the box body (10); the box cover (20) is provided with a second sealing groove (21) corresponding to the first sealing groove (11); the second sealing groove (21) extends along the circumference of the box cover (20); as well as The sealing assembly comprises an annular sealing column (31) and a sealing ring (32) formed on the circumference of the sealing column (31); one end of the sealing column (31) is inserted into the first sealing groove (11) and the other end is inserted into the second sealing groove (21); the sealing ring (32) is sandwiched between the box body (10) and the box cover (20).

2. The waterproof box according to claim 1, characterized in that: The sealing ring (32) comprises a first sealing portion (321) and a second sealing portion (322), wherein the first sealing portion (321) is formed on the inner side of the sealing column (31), and the second sealing portion (322) is formed on the outer side of the sealing column (31).

3. The waterproof box according to claim 2, characterized in that: The first sealing portion (321), the second sealing portion (322) and the sealing column (31) are integrally formed; and / or The first sealing part (321), the second sealing part (322) and the sealing column (31) are all made of one of rubber, fluororubber, silicone and tetrafluoroethylene.

4. The waterproof box according to any one of claims 1 to 3, characterized in that: The sealing assembly further comprises an annular sealing member (33), wherein the annular sealing member (33) is located on the inner side of the sealing ring (32), and the annular sealing member (33) is sandwiched between the box body (10) and the box cover (20).

5. The waterproof box according to claim 4, characterized in that: The annular sealing member (33) is fixedly connected to the box body (10), is located on the inner side of the first sealing groove (11), and abuts against the bottom of the box cover (20).

6. The waterproof box according to claim 5, characterized in that: The box cover (20) is also provided with a mounting groove (22) for mounting parts, the mounting groove (22) being recessed toward a side away from the accommodating cavity (12), and a portion of the annular sealing member (33) is located in the mounting groove (22) and abuts against the box cover (20).

7. The waterproof box according to any one of claims 1 to 3, 5 and 6, characterized in that: The accommodating cavity (12) is used to accommodate the battery pack (70); the waterproof box also includes a wiring barrel (50) for the connecting wire (60) to pass through, the wiring barrel (50) is protruding from the outer wall of the box body (10) and is connected to the accommodating cavity (12), and the inner wall of the wiring barrel (50) is provided with a sealing ring (51), and the sealing ring (51) is used to be sleeved on the outer peripheral wall of the connecting wire (60).

8. The waterproof box according to claim 7, characterized in that: A plurality of the sealing collars (51) are provided, and the plurality of sealing collars (51) are arranged at intervals along the length direction of the wiring barrel (50).

9. A battery pack assembly, characterized in that: include: Battery pack (70); as well as According to any one of claims 1 to 8, the battery pack (70) is accommodated in the accommodating cavity (12).

10. The battery pack assembly according to claim 9, characterized in that: The battery pack assembly also includes a vibration reduction assembly, which includes a connecting structure, a first buffer member (42) and a second buffer member (43). The connecting structure is arranged on the bottom wall of the box body (10) and is fixedly connected to the battery pack (70). The box body (10) also includes a first side wall and a second side wall arranged opposite to each other. The first buffer member (42) is sandwiched between the first side wall and the connecting structure, and the second buffer member (43) is sandwiched between the second side wall and the connecting structure.

11. The battery pack assembly according to claim 10, characterized in that: The first buffer member (42) has at least one bend; and / or The second buffer member (43) is provided with at least one bend.

12. The battery pack assembly according to claim 11, characterized in that: The first buffer (42) comprises a first connecting surface and a second connecting surface arranged in parallel, the first connecting surface is in contact with the first side wall, the second connecting surface is in contact with the connecting structure, and at least one bend is provided between the first connecting surface and the second connecting surface; and / or The second buffer member (43) comprises a third connecting surface and a fourth connecting surface which are arranged in parallel, the third connecting surface is in contact with the second side wall, the fourth connecting surface is in contact with the connecting structure, and at least one bend is provided between the third connecting surface and the fourth connecting surface.

13. The battery pack assembly according to claim 10, characterized in that: The connection structure comprises a first connection block (411) and a second connection block (412) which are arranged at intervals, wherein the first connection block (411) and the second connection block (412) are both arranged on the bottom wall of the box body (10) and fixedly connected to the bottom of the battery pack (70); wherein the first buffer member (42) is clamped between the first connection block (411) and the first side wall, and the second buffer member (43) is clamped between the second connection block (412) and the second side wall.

14. The battery pack assembly according to claim 13, characterized in that: The vibration reduction assembly also includes a vibration reduction pad (44), which is located on the bottom wall of the box body (10), fixedly connected to the first connecting block (411) and the second connecting block (412), and abuts against the bottom of the battery pack (70).

15. The battery pack assembly according to claim 14, characterized in that: The vibration reduction assembly further comprises a pressure plate (45) and an elastic member (46), wherein the elastic member (46) connects the pressure plate (45) and the box cover (20), the elastic member (46) is in a compressed state, and the pressure plate (45) presses against the top of the battery pack (70).

16. The battery pack assembly according to claim 15, characterized in that: The vibration reduction assembly also includes a guide rod (47), one end of which is fixedly connected to the box cover (20) and the other end of which extends toward the top of the battery pack (70), and the elastic member (46) includes a spring, which is sleeved on the guide rod (47).

17. The battery pack assembly according to claim 16, characterized in that: The guide rod (47) is configured as a telescopic rod that can be extended and retracted along its length direction, one end of the telescopic rod is fixedly connected to the box cover (20), and the other end is connected to the pressure plate (45), and the spring is sleeved on the telescopic rod.

18. A vehicle, characterized in that: include: The waterproof box according to any one of claims 1 to 8; or A battery pack assembly as claimed in any one of claims 9 to 17.

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