CN218182395U

CN218182395U - Support assembly for battery box

Info

Publication number: CN218182395U
Application number: CN202221563130.2U
Authority: CN
Inventors: 彭庆丰; 朱仁杰
Original assignee: Hozon New Energy Automobile Co Ltd
Current assignee: Hozon New Energy Automobile Co Ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-12-30
Anticipated expiration: 2032-06-21

Abstract

The utility model discloses a supporting component for battery box. The battery box includes a plurality of apron. The support assembly includes a support portion, a compression portion, and a sealing portion. The support portion abuts against the cover plate on one side of the cover plate. The pressing part is abutted against the cover plate on the other side of the cover plate. Part of the structure of the pressing part penetrates through the cover plate and is connected to the supporting part. The sealing part forms a sealing effect on the battery case on the surface of the support part and/or the cover plate. Above-mentioned supporting component connects the supporting part through the portion that compresses tightly for supporting part and the portion that compresses tightly are connected in the both sides cooperation of apron respectively, constitute the centre gripping effect to the apron, need not set up the screw structure on the apron and come fixed support component, and the sealing can be sealed on supporting part or the portion that compresses tightly, is favorable to realizing the sealed effect to battery box inside.

Description

Support assembly for battery box

Technical Field

The utility model relates to a power battery technical field, in particular to a supporting component for battery box.

Background

In new energy lithium battery automobiles, a lithium battery system has been attracting attention as a key part of a vehicle. The battery box carrying the lithium battery is used as a key component in a battery system, and the mechanical safety, sealing safety and the like of the battery box directly influence the safety of the whole vehicle.

Because of the structural requirements, the battery box usually needs to be provided with a bearing point in the middle, and the battery box is locked to the vehicle chassis through the bearing point by bolts. The bearing points in the middle of the battery box need to penetrate through the lower box body, the cross beam, the upper cover and the like of the battery box, so that a plurality of points which can cause the sealing failure of the box body can be formed, and the sealing failure can be caused if the structural design is not reasonable.

SUMMERY OF THE UTILITY MODEL

The utility model provides a supporting component for battery box.

The utility model provides a pair of a supporting component for battery box, battery box includes a plurality of apron, a serial communication port, supporting component includes:

a support portion abutting against the cover plate on one side thereof;

the other side of the cover plate is abutted to the cover plate, and part of the structure of the pressing part penetrates through the cover plate and is connected to the supporting part; and

and a sealing part which forms a sealing effect on the battery box on the surface of the supporting part and/or the cover plate.

Above-mentioned supporting component is through the supporting part of compressing tightly for supporting part and compressing tightly the portion and connecting in the both sides cooperation of apron respectively, constitute the centre gripping effect to the apron, need not set up the screw structure on the apron and come fixed support component, and the sealing can be sealed on supporting part or the portion of compressing tightly, is favorable to realizing the sealed effect to the battery box inside.

In some embodiments, the cover plates include an upper cover, the support portion includes an upper support, the pressing portion includes an upper pressing member located on a top side of the upper cover, the upper support is located on a bottom side of the upper cover, and the upper pressing member penetrates through the upper cover and is connected to the upper support. Therefore, the fixing effect of the supporting component on the battery box can be realized.

In some embodiments, the sealing portion includes a first sealing member, an end of the upper support member toward the upper pressing member has a first boss and a second boss, the second boss is farther from the upper pressing member relative to the first boss,

under the condition that the upper pressing piece is connected with the upper supporting piece, the upper pressing piece is abutted against the first boss and forms a first interval with the second boss, and the first sealing piece seals a gap between the upper pressing piece and the upper cover in the first interval. Therefore, the deformation of the upper cover caused by excessive up-and-down extrusion can be avoided.

In some embodiments, the sealing portion includes a second sealing member, an end of the upper support toward the upper pressing member has a third boss, the third boss is farther from the upper pressing member relative to the second boss,

under the condition that the upper pressing piece is connected with the upper supporting piece and abutted to the upper cover, a second interval is formed between the upper supporting piece and the upper cover, and the second sealing piece is arranged in the second interval in an interference mode and abutted to the upper supporting piece and the upper cover. Therefore, the effective compression ratio can be ensured, and the problems of over-pressure or insufficient compression can not be caused.

In some embodiments, the plurality of cover plates includes a first bottom plate located in a direction of a bottom side of the upper cover,

the supporting part comprises a lower supporting part, the lower supporting part penetrates through the first bottom plate, one end of the lower supporting part abuts against the bottom side of the first bottom plate, and the other end of the lower supporting part is connected with the lower supporting part at the bottom side of the lower supporting part. Therefore, the fixing effect of the whole support component on the battery box can be realized.

In certain embodiments, the sealing portion includes a third seal that seals a gap between the upper support and the lower support. Thus, moisture is prevented from entering the tank from the gap between the upper support and the lower support.

In some embodiments, the battery box includes a box beam, the seal portion includes a fourth seal,

the lower supporting piece penetrates through the box body beam, the bottom side of the box body beam is abutted to the top side of the first bottom plate, the top side of the box body beam is abutted to the upper supporting piece, and the fourth sealing piece seals a gap between the upper supporting piece and the box body beam. Thus, the sealing effect can be improved.

In certain embodiments, the sealing portion includes a fifth seal that seals a gap between the lower support and the first base plate. In this way, moisture is prevented from entering the tank from the gap between the lower support and the first bottom plate.

In some embodiments, the plurality of cover plates includes a second bottom plate located in a direction of a bottom side of the first bottom plate,

the pressing part includes a lower pressing member, the lower supporting member is located on the top side of the second base plate, and the lower pressing member penetrates through the second base plate and is connected to the lower supporting member. Therefore, the applicability of the support component to battery boxes with different structures can be improved.

In certain embodiments, the sealing portion includes a sixth seal that seals a gap between the lower support and the second base plate. In this manner, moisture is prevented from entering the tank from the gap between the lower compression member and the second bottom plate.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a support assembly and a cover plate according to an embodiment of the present invention;

FIG. 2 is an exploded schematic view of a support assembly and cover plate of an embodiment of the present invention;

fig. 3 is a schematic structural view of an upper support member according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the upper supporting member, the upper pressing member and the upper cover according to the embodiment of the present invention.

Description of the main element symbols:

a support assembly 100;

the support part 110, the upper support 111, the lower support 113, the protruding part 114, the connection hole 116;

a first boss 121, a second boss 122, a third boss 123, a first space 124, a second space 125;

the pressing part 130, the upper pressing piece 131, the lower pressing piece 133, the first abutting surface 135 and the connecting shaft 136;

a seal portion 150, a first seal 151, a second seal 152, a third seal 153, a fourth seal 154, a fifth seal 155, and a sixth seal 156;

a bolt 161;

a battery case 200;

a cover plate 210, an upper cover 211, a first bottom plate 212, a box girder 213, and a second bottom plate 214.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 and 2, the present invention provides a support assembly 100 for a battery box 200. The battery case 200 includes a plurality of cap plates 210. The support assembly 100 includes a support portion 110, a compression portion 130, and a sealing portion 150. The support portion 110 abuts the cap plate 210 at one side of the cap plate 210. The pressing portion 130 abuts the cap plate 210 at the other side of the cap plate 210. Part of the structure of the pressing part 130 penetrates the cover plate 210 and is connected to the supporting part 110. The sealing part 150 constitutes a sealing effect to the battery case 200 at the surface of the support part 110 and/or the cap plate 210.

Above-mentioned supporting component 100 connects supporting part 110 through pressing part 130 for supporting part 110 and pressing part 130 are connected in the both sides cooperation of apron 210 respectively, constitute the centre gripping effect to apron 210, need not set up screw structure on apron 210 and fix supporting component 100, and sealing part 150 can be sealed supporting part 110 or pressing part 130 on, is favorable to realizing the sealed effect to battery box 200 inside.

Specifically, in fig. 1 and 2, the support member 100 forms its own lengthwise direction in the A1 direction and the A2 direction. The support member 100 forms a top direction along the A1 direction. The support member 100 forms a bottom direction along the A2 direction. The supporting portion 110 may abut against a side surface of the cover plate 210 along the A2 direction, and the pressing portion 130 may abut against a side surface of the cover plate 210 along the A1 direction, so as to form a clamp for the cover plate 210.

In the embodiment shown in fig. 1, the pressing part 130 may include a first abutment surface 135 and a connection shaft 136. The connecting shaft 136 is protruded from the surface of the first bottom interface. The pressing portion 130 abuts against a side surface of the cover plate 210 in the A1 direction by the first abutting surface 135, and passes through a through hole formed in the cover plate 210 along the axis L by the connecting shaft 136, so that the connecting shaft 136 can be partially located at one side of the cover plate 210 in the A2 direction. The support portion 110 may include a connection hole 116. Under the condition that supporting part 110 butt apron 210 is along the side of A2 direction, the hole axle of connecting hole 116 corresponds axis L, make connecting shaft 136 wear to establish connecting hole 116 again along axis L, and connect supporting part 110 through the mode that is connected to connecting hole 116, realize the fixed connection of supporting part 110 and clamping part 130, need not realize the fixed effect of supporting component 100 on battery box 200 through the welded mode, be favorable to reducing the technological requirement, improve manufacturing efficiency, and guarantee off-the-shelf whole quality.

On the basis of the above, since there is still a gap between the support part 110 or the pressing part 130 and the cap plate 210, by disposing the sealing part 150 in the gap to form a sealing effect to the gap, it is possible to prevent moisture located outside the battery case 200 from entering the inside of the battery case 200 along the gap.

In addition, the support portion 110 may form a cylindrical structure or an elongated structure along the axis L. The compressing portion 130 may form a cylindrical structure or an elongated structure along the axis L.

Furthermore, the battery box 200 may be used to house a plurality of power batteries.

Referring to fig. 1, in some embodiments, the plurality of cover plates 210 includes an upper cover 211. The support portion 110 includes an upper support 111. The pressing part 130 includes an upper pressing member 131. The upper pressing member 131 is located at the top side of the upper cover 211. The upper support 111 is located at the bottom side of the upper cover 211. The upper pressing member 131 penetrates the upper cover 211 and is connected to the upper support 111.

In this way, the fixing action of the support assembly 100 to the battery box 200 can be achieved.

Wherein the upper cover 211 is located at the top of the battery case 200 formed in the A1 direction.

Referring to fig. 1, 3 and 4, in some embodiments, the sealing portion 150 includes a first sealing member 151. The end of the upper support 111 facing the upper pressing member 131 has a first boss 121 and a second boss 122. The second boss 122 is farther from the upper presser 131 relative to the first boss 121. With the upper pressing piece 131 connected to the upper support 111, the upper pressing piece 131 abuts against the first boss 121 and forms a first space 124 with the second boss 122. The first sealing member 151 seals a gap between the upper pressing member 131 and the upper cover 211 within the first space 124.

Thus, the upper cover 211 is prevented from being deformed by excessive vertical pressing.

Specifically, referring to fig. 3 and 4, the upper support 111 is formed at one end facing the upper pressing member 131 along the A1 direction. The second boss 122 is located on the rear side of the first boss 121 in the A1 direction, and is located on the outer side of the first boss 121 in the radial direction formed around the axis L. In a case where the upper pressing member 131 is connected to the upper support 111, the upper pressing member 131 may partially abut to the first boss 121 through the first abutting surface 135. The first abutting surface 135 and the second boss 122 have a distance therebetween in the A1 direction and the A2 direction to form a first gap 124. For the upper cover 211, the upper support 111 and the upper pressing member 131 can clamp the upper cover 211 in the first space 124, and the upper pressing member 131 is abutted against the first boss 121 and cannot contact the second boss 122, so that the upper cover 211 cannot be excessively pressed in the first space 124 to cause crushing deformation, and large gaps cannot be generated between the upper cover 211 and the upper support 111 and between the upper cover 211 and the upper pressing member 131 due to deformation of the upper cover 211, which is favorable for ensuring good sealing performance.

In addition, in some embodiments, the material of the upper cover 211 may be metal, plastic, and composite material.

Referring to fig. 1, 3 and 4, in some embodiments, the sealing portion 150 includes a second sealing member 152. The end of the upper support 111 facing the upper pressing member 131 has a third boss 123. The third boss 123 is farther from the upper pressing member 131 with respect to the second boss 122. With the upper pressing member 131 connected to the upper support 111 and abutting the upper cover 211, a second gap 125 is formed between the upper support 111 and the upper cover 211. The second seal 152 is disposed within the second gap 125 with interference and abuts the upper support 111 and the upper cover 211.

Therefore, the effective compression ratio can be ensured, and the problems of over-pressure or insufficient compression can not be caused.

Specifically, referring to FIGS. 3 and 4,

the third boss 123 is located on the rear side of the second boss 122 in the A1 direction, and is located on the outer side of the second boss 122 in the radial direction formed around the axis L. With the upper pressing member 131 connected to the upper support 111 and abutting against the upper cover 211, a portion of the upper cover 211 close to the axis L is clamped by the upper support 111 and the upper pressing member 131 in the first space 124, and a portion of the upper cover 211 away from the axis L is located in a space between the upper pressing member 131 and the third boss 123, so that the second space 125 is formed between the upper cover 211 and the third boss 123. By disposing the second sealing member 152 in the second space 125 with interference, the second sealing member 152 can be made to fit the upper cover 211 along the A1 direction and fit the third boss 123 along the A2 direction, so that the upper supporting member 111 can press the upper cover 211 through the second sealing member 152, and the upper cover 211 is abutted. The second sealing member 152 may have elasticity, so that the second sealing member 152 can be compressed according to the spatial size of the second gap 125, so as to sufficiently limit the upper cover 211 between the upper support 111 and the upper pressing member 131 through an interference connection, and avoid the deformation of the upper cover 211 caused by excessive pressing, or avoid the poor clamping effect caused by the low pressing degree.

Referring to fig. 1 and 2, in some embodiments, the plurality of cover plates 210 includes a first base plate 212. The first bottom plate 212 is located in the direction of the bottom side of the upper cover 211. The supporting part 110 includes a lower support 113. The lower support 113 penetrates the first base plate 212. One end of the lower support 113 abuts against the bottom side of the first bottom plate 212. The other end of the lower support 113 is connected to the lower support 113 at the bottom side of the lower support 113.

In this way, the fixing action of the support assembly 100 to the battery box 200 as a whole can be achieved.

Specifically, in fig. 1, one end of the lower support 113 formed in the A2 direction has a convex portion 114. In the case that the lower support 113 penetrates the first bottom plate 212 along the A1 direction, the protrusion 114 is finally abutted to the side surface of the first bottom plate 212 along the A2 direction. One end of the lower support 113 formed along the A2 direction can be connected to the upper support 111 through the side of the upper support 111 formed along the A2 direction, and when the support assembly 100 is fixed on the upper cover 211 through the upper support 111 and the upper pressing member 131, the protrusion 114 of the lower support 113 can fix the support assembly 100 integrally between the upper cover 211 and the first bottom plate 212, so that the fixing effect of the support assembly 100 integrally on the battery box 200 can be realized.

In addition, the first bottom plate 212 may be a liquid-cooled plate of the battery case 200.

Referring to fig. 1 and 2, in some embodiments, the sealing portion 150 includes a third sealing member 153. The third seal 153 seals a gap between the upper support 111 and the lower support 113.

In this way, moisture is prevented from entering the tank from the gap between the upper support 111 and the lower support 113.

Referring to fig. 1 and 2, in some embodiments, the battery box 200 includes box beams 213. The sealing portion 150 includes a fourth seal 154. The lower support 113 is inserted through the box girder 213. The bottom side of the box girder 213 abuts to the top side of the first bottom plate 212. The top side of the box girder 213 abuts the upper support 111. The fourth sealing member 154 seals a gap between the upper support 111 and the box girder 213.

Thus, the sealing effect can be improved.

Specifically, in fig. 1, the third seal 153 is provided at the connection between the upper support 111 and the lower support 113 so that a gap at the connection between the upper support 111 and the lower support 113 can be sealed. The third seal 153 is provided between the upper support 111 and the box girder 213 so that a gap between the upper support 111 and the box girder 213 can be sealed. On the basis of the above, the third sealing member 153 and the fourth sealing member 154 can cooperatively form a double sealing effect, so as to prevent the single sealing member from failing to cause external moisture to enter the battery box 200.

In the case where external moisture enters the inside of the battery case 200, the moisture needs to sequentially pass through the position of the third sealing member 153 and the position of the fourth sealing member 154, so that the moisture is blocked by the third sealing member 153 and the fourth sealing member 154, and the sealing effect of preventing the moisture from entering the inside of the battery case 200 from the gap between the upper support 111 and the lower support 113 is achieved.

In addition, in fig. 1, the lower support 113 may abut against the side surfaces of the first base plate 212 in the A1 direction and the A2 direction, respectively, in cooperation with the box girder 213, thereby performing a clamping function on the first base plate 212.

Referring to fig. 1 and 2, in some embodiments, the sealing portion 150 includes a fifth seal 155. The fifth seal 155 seals a gap between the lower support 113 and the first base plate 212.

In this manner, moisture is prevented from entering the tank from the gap between the lower support 113 and the first bottom plate 212.

In addition, in other embodiments, the surface of contact between the box beam 213 and the first base plate 212 may be provided with glue, so that the effect of a double seal is formed between the fifth sealing member 155 and the glue.

Referring to fig. 1 and 2, in some embodiments, the plurality of cover plates 210 includes a second base plate 214. The second bottom plate 214 is located in the direction of the bottom side of the first bottom plate 212. The pressing part 130 includes a lower pressing member 133. The lower support 113 is located at a top side of the second base plate 214. The lower pressing member 133 passes through the second base plate 214 and is connected to the lower support 113.

In this way, the applicability of the support assembly 100 to battery cases 200 having different structures may be improved.

Specifically, in some embodiments, the first bottom plate 212 and the second bottom plate 214 are both located at the bottom of the battery box 200. For the support assembly 100, the lower support 113 penetrates through the first bottom plate 212 and is connected with the upper support 111, so that the support assembly 100 can play a role in limiting the first bottom plate 212; the support assembly 100 has a clamping effect on the second base plate 214 by abutting the lower pressing member 133 and the lower support 113 against the sides of the second base plate 214 in the A1 direction and the A2 direction, respectively, and causing the lower pressing member 133 to connect with the lower support 113. That is, in the case that the battery case 200 has different structures of the cap plates 210, different cap plates 210 may be respectively clamped and defined by cooperation between the plurality of members, thereby improving fixing strength of the support assembly 100 in the battery case 200. Wherein, the bottom side of the first bottom plate 212 is in the direction of A2.

In addition, the second bottom plate 214 may be a bottom guard plate of the battery case 200.

Referring to fig. 1 and 2, in some embodiments, the sealing portion 150 includes a sixth seal 156. The sixth sealing member 156 seals a gap between the lower support 113 and the second base plate 214.

In this manner, moisture is prevented from entering the tank from the gap between the lower clamp 133 and the second bottom plate 214.

Additionally, in some embodiments, referring to fig. 1, the support assembly 100 may include a bolt 161. The upper pressing member 131 may be internally opened with a screw hole along the axis L. The lower support 113 may be internally bored with a threaded hole along the axis L. The bolt 161 may be sequentially inserted through threaded holes in the lower support 113 and the upper pressing member 131 along the axis L, thereby defining the lower support 113 and the upper pressing member 131. Since the lower support 113 and the upper pressing member 131 are respectively connected to the upper support 111 at two ends of the upper support 111 along the A1 direction and the A2 direction, the upper pressing member 131, the upper support 111, and the lower support 113 can be integrally defined, thereby improving the connection strength of the support assembly 100 on the battery box 200 as a whole.

In addition, in other embodiments, the lower support 113 and the first base plate 212 may be connected by welding. The lower support 113 and the upper support 111 may be connected by welding. The sealing member may be a sealant.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A support assembly for a battery box, the battery box including a plurality of cover plates, the support assembly comprising:

a support portion that abuts the cover plate on one side of the cover plate;

the other side of the cover plate is abutted against the cover plate, and part of the structure of the pressing part penetrates through the cover plate and is connected to the supporting part; and

and a sealing part which forms a sealing effect on the battery case on the surface of the support part and/or the cover plate.

2. The support assembly of claim 1, wherein the plurality of cover plates comprise an upper cover, the support portion comprises an upper support member, the pressing portion comprises an upper pressing member, the upper pressing member is located on a top side of the upper cover, the upper support member is located on a bottom side of the upper cover, and the upper pressing member penetrates through the upper cover and is connected to the upper support member.

3. The support assembly of claim 2, wherein the sealing portion comprises a first seal, an end of the upper support toward the upper clamp having a first boss and a second boss, the second boss being further from the upper clamp relative to the first boss,

under the condition that the upper pressing piece is connected with the upper supporting piece, the upper pressing piece is abutted against the first boss and forms a first interval with the second boss, and the first sealing piece seals a gap between the upper pressing piece and the upper cover in the first interval.

4. The support assembly of claim 3, wherein the sealing portion comprises a second seal, an end of the upper support toward the upper hold down having a third boss, the third boss being further from the upper hold down relative to the second boss,

under the condition that the upper pressing piece is connected with the upper supporting piece and abutted to the upper cover, a second interval is formed between the upper supporting piece and the upper cover, and the second sealing piece is arranged in the second interval in an interference mode and abutted to the upper supporting piece and the upper cover.

5. The support assembly of claim 2, wherein the plurality of cover plates includes a first bottom plate located in a direction of a bottom side of the upper cover,

the supporting part comprises a lower supporting part, the lower supporting part penetrates through the first bottom plate, one end of the lower supporting part abuts against the bottom side of the first bottom plate, and the other end of the lower supporting part is connected with the lower supporting part at the bottom side of the lower supporting part.

6. The support assembly of claim 5, wherein the sealing portion includes a third seal that seals a gap between the upper support and the lower support.

7. The support assembly of claim 6, wherein the battery box includes a box beam, the seal includes a fourth seal,

the lower supporting piece penetrates through the box body beam, the bottom side of the box body beam is abutted to the top side of the first bottom plate, the top side of the box body beam is abutted to the upper supporting piece, and the fourth sealing piece seals a gap between the upper supporting piece and the box body beam.

8. The support assembly of claim 5, wherein the seal portion comprises a fifth seal that seals a gap between the lower support and the first base plate.

9. The support assembly of claim 5, wherein the plurality of cover plates includes a second bottom plate located in the direction of the bottom side of the first bottom plate,

the pressing part includes a lower pressing member located at a top side of the second base plate, the lower pressing member being inserted through the second base plate and connected to the lower supporting member.

10. The support assembly of claim 9, wherein the seal portion comprises a sixth seal that seals a gap between the lower support and the second base plate.