Battery box cross beam structure, battery box and vehicle

Abstract

The battery box cross beam structure comprises a base cross beam, a reinforcing beam and a reinforcing block; the reinforcing beam is installed on the base cross beam, and the extending direction of the reinforcing beam is the same as that of the base cross beam; and the reinforcing block is installed on the reinforcing beam, and the reinforcing block has an extending table top, and the extending direction of the extending table top is the same as that of the base cross beam. The above scheme can improve the protection intensity of the battery and reduce the probability of damage of the battery in vehicle collision.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicles, and in particular, to a battery box cross beam structure, a battery box and a vehicle. BACKGROUND

[0002] With the increasing popularity of electric vehicles, the structure of the battery box for installing batteries is also constantly improving. The battery box is used to hold, install and protect the battery, and the battery box can have a cross beam structure that can resist external extrusion.

[0003] In related technologies, the battery of the vehicle mainly relies on the cross beam structure in the battery box for protection in a collision event.

[0004] However, when the vehicle is subjected to a severe collision, the cross beam structure of the battery box can be severely deformed, resulting in poor protection of the battery. SUMMARY

[0005] In view of this, the present disclosure provides a battery box cross beam structure, a battery box and a vehicle, which can improve the protection of the battery and reduce the probability of damage to the battery in a vehicle collision.

[0006] Specifically, the technical solutions include the following:

[0007] In a first aspect, a battery box cross beam structure is provided, comprising a base cross beam, a reinforcing beam and a reinforcing block;

[0008] The reinforcing beam is mounted on the base cross beam, and the extension direction of the reinforcing beam is the same as the extension direction of the base cross beam.

[0009] The reinforcing block is mounted on the reinforcing beam, and the reinforcing block has an extension table, and the extension direction of the extension table is the same as the extension direction of the base cross beam.

[0010] Optionally, the battery box cross beam structure further comprises a sealing member mounted on the reinforcing block.

[0011] Optionally, the side of the reinforcing block away from the reinforcing beam has a limiting groove, and at least part of the sealing member is located in the limiting groove.

[0012] Optionally, the base cross beam and the reinforcing beam are connected by welding, and / or the reinforcing beam and the reinforcing block are connected by welding.

[0013] Optionally, the base cross beam and the reinforcing beam have a first connecting hole in communication, and the battery box cross beam structure further has a first fixed connecting member, and the first fixed connecting member is screwed in the first connecting hole.

[0014] The reinforcing beam and the reinforcing block have a second connecting hole in communication, and the battery box cross beam structure further has a second fixed connecting piece which is screwed in the second connecting hole.

[0015] Optionally, the reinforcing beam has at least one energy absorption hole.

[0016] Optionally, the sealing member has a center through hole, the reinforcing block has a third fixed hole, and the battery box cross beam structure further comprises a third fixed connecting piece which passes through the center through hole and is screwed in the third fixed hole.

[0017] Optionally, the third fixed hole extends to the reinforcing beam and penetrates the reinforcing beam, and / or continues to extend to the base cross beam, at least partially extends into the base cross beam or penetrates the base cross beam; the third fixed connecting piece further extends into the reinforcing beam and / or continues to extend into the base cross beam.

[0018] In a second aspect, a battery box is provided, comprising any of the battery box cross beam structures as described above.

[0019] In a third aspect, a vehicle is provided, comprising any of the battery box cross beam structures as described above, or comprising the battery box as described above.

[0020] The battery box cross beam structure, the battery box and the vehicle provided by the embodiments of the present disclosure have the following beneficial effects. The reinforcing beam and the reinforcing block are further arranged on the base cross beam of the battery box cross beam structure, the extending direction of the reinforcing beam and the extending direction of the extending surface of the reinforcing block are the same as the extending direction of the base cross beam, and thus the resistance effect of the cross beam structure to the force in the extending direction is effectively strengthened when the vehicle is in a collision, which can effectively avoid the serious deformation of the battery box, thereby better ensuring that the battery is not damaged due to extrusion and improving the safety of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0022] Figure 1 A front view of a battery box cross beam structure provided by the embodiments of the present disclosure;

[0023] Figure 2 A front view of a battery box cross beam structure provided by the embodiments of the present disclosure;

[0024] Figure 3A structural schematic diagram of a sealing element provided by an embodiment of the present disclosure;

[0025] Figure 4 A schematic diagram of a battery box cross beam structure provided by an embodiment of the present disclosure;

[0026] Figure 5 A schematic diagram of another battery box cross beam structure provided by an embodiment of the present disclosure;

[0027] Figure 6 A disassembled schematic diagram of a battery box cross beam structure provided by an embodiment of the present disclosure;

[0028] Figure 7 A schematic diagram of an arrangement form of a battery box cross beam structure in a battery box provided by an embodiment of the present disclosure;

[0029] Figure 8 A schematic diagram of an arrangement form of a battery box cross beam structure in a battery box provided by an embodiment of the present disclosure;

[0030] Figure 9 A schematic diagram of an arrangement form of a battery box cross beam structure in a battery box provided by an embodiment of the present disclosure;

[0031] Figure 10 A schematic diagram of a battery box provided by an embodiment of the present disclosure.

[0032] The reference signs in the drawings represent the following:

[0033] 0 - battery box;

[0034] 1 - battery box cross beam structure;

[0035] 11 - base cross beam;

[0036] 12 - reinforcing beam; 121 - energy absorption hole;

[0037] 13 - reinforcing block; 131 - extension table; 132 - limiting groove; 133 - main body;

[0038] 14 - sealing element; 141 - center via hole;

[0039] H1 - first connecting hole; H2 - second connecting hole; H3 - third fixing hole;

[0040] C1 - first fixed connecting element; C2 - second fixed connecting element; C3 - third fixed connecting element.

[0041] The above drawings have shown the explicit embodiments of the present disclosure, which will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present disclosure by any means, but to illustrate the concept of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present disclosure.

[0043] The positional nouns such as "upper", "lower", "side" and the like involved in the embodiments of the present disclosure are generally based on the positions shown in the drawings or the relative positional relationship between the structures when the battery box is placed in the habit, and these positional nouns are only used to more clearly describe the structures and the relationship between the structures, and are not used to describe absolute positions. When the battery box is placed in different postures, the positions may change, for example, "upper" and "lower" may be interchanged.

[0044] Unless otherwise defined, all technical terms used in the embodiments of the present disclosure have the same meanings as commonly understood by those of ordinary skill in the art.

[0045] In order to make the technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in further detail below with reference to the drawings.

[0046] In a first aspect, the embodiments of the present disclosure provide a battery box beam structure.

[0047] Reference Figures 1-2 The battery box beam structure 1 comprises a base beam 11, a reinforcing beam 12 and a reinforcing block 13.

[0048] The reinforcing beam 12 is installed on the base beam 11, and the extension direction of the reinforcing beam 12 is the same as that of the base beam 11.

[0049] The reinforcing block 13 is installed on the reinforcing beam 12, and the reinforcing block 13 has an extension table 131, and the extension direction of the extension table 131 is the same as that of the base beam 11.

[0050] Optionally, the reinforcing block has an extension table, which can mean that the reinforcing block itself is long strip-shaped, or as shown, the reinforcing block 13 comprises a main body 133, and one side or both sides of the main body 133 have relatively protruding extension structures (i.e. the extension table 131), and the thickness of the extension structure is different from that of the main body 133. Figure 1 The extension structure of the reinforcing block is different from that of the main body 133. Figure 1 The extension structure of the reinforcing block is different from that of the main body 133. Figure 1The shape of the reinforcing block facilitates the connection of the beam structure at the main body to other components (such as the vehicle body, etc.), and the connection of the reinforcing block to the reinforcing beam and the like by means of the extension structure, effectively reinforcing the strength of the position where the reinforcing block is located, avoiding serious collapse of the connection position in the collision. At the same time, by means of the extension platforms on both sides, the force received by the reinforcing block as a whole can be decomposed on both sides of the main body, so that the reinforcing beam and the base beam can jointly bear the extrusion force, avoiding serious deformation of the beam structure locally and as a whole.

[0051] Optionally, the main body 133 of the reinforcing block 13 can be a protruding block protruding away from the reinforcing beam 12 relative to the extension platform 131. Optionally, the main body 133 can be a polygonal boss, such as a four-sided boss, a five-sided boss, or a six-sided boss, etc. Further, the main body 133 can be a regular polygonal boss, and the extension structures on both sides of the main body are symmetrically arranged relative to the main body 133, so that the extrusion force received is uniformly decomposed on both sides of the main body.

[0052] The battery box beam structure provided by the embodiments of the present disclosure further comprises a reinforcing beam and a reinforcing block on the base beam, the extension direction of the reinforcing beam and the extension direction of the extension platform of the reinforcing block are the same as the extension direction of the base beam, so that when the vehicle collides, the resistance effect of the beam structure to the force in the extension direction is effectively strengthened, which can effectively avoid serious deformation of the battery box, thereby better ensuring that the battery is not damaged due to extrusion, and improving the safety of the vehicle.

[0053] In some embodiments, referring to Figures 1-2 , the battery box beam structure 1 further comprises a sealing member 14 installed on the reinforcing block 13.

[0054] In the present embodiment, the battery box beam structure needs to be connected to the vehicle body structure to achieve the fixed installation of the battery box on the vehicle body. The sealing member is located between the reinforcing block and the vehicle body structure, which can effectively prevent the leakage of the battery in the battery box into the vehicle body, and prevent water from leaking into the battery box when the vehicle body is flooded.

[0055] Optionally, referring to Figure 2 , the side of the reinforcing block 13 away from the reinforcing beam 12 has a limiting groove 132, and at least part of the sealing member 14 is located in the limiting groove 132.

[0056] Based on the above arrangement, the position of the sealing member can be limited by the limiting groove, which can effectively improve the installation accuracy and stability of the sealing member. It should be noted that the sealing member needs to seal the gap between the vehicle body structure and the beam structure, therefore, at least part of the sealing member protrudes relative to the limiting groove to form effective contact with the vehicle body structure.

[0057] Optionally, the limiting groove 132 is arranged on the side of the main body 133 of the reinforcing block 13 away from the reinforcing beam 12.

[0058] In some embodiments, the base crossbeam 11 and the reinforcing beam 12 are welded, and / or the reinforcing beam 12 and the reinforcing block 13 are welded.

[0059] The fixed connection between the base crossbeam and the reinforcing beam, and the fixed connection between the reinforcing beam and the reinforcing block are achieved by welding, which can effectively ensure the firmness and stability of the connection between the base crossbeam and the reinforcing beam, and the connection between the reinforcing beam and the reinforcing block, while the cost is relatively low.

[0060] In some embodiments, referring to Figure 4 , the base crossbeam 11 and the reinforcing beam 12 have a first connecting hole H1 in communication, and the battery box crossbeam structure 1 further has a first fixed connecting piece C1, which is screwed in the first connecting hole H1;

[0061] The reinforcing beam 12 and the reinforcing block 13 have a second connecting hole H2 in communication, and the battery box crossbeam structure 1 further has a second fixed connecting piece C2, which is screwed in the second connecting hole H2.

[0062] In the present embodiment, the first connecting hole penetrates at least one of the base crossbeam and the reinforcing beam, and the first fixed connecting piece is screwed in the first connecting hole from the direction of the reinforcing beam pointing to the base crossbeam (at this time, the first connecting hole penetrates at least the reinforcing beam), or from the direction of the base crossbeam pointing to the reinforcing beam (at this time, the first connecting hole penetrates at least the base crossbeam). Figure 4 For example, the first connecting hole penetrates the reinforcing beam and extends partially into the base crossbeam. The second connecting hole penetrates at least the reinforcing block, and in some cases, continues to penetrate the reinforcing beam, and the second fixed connecting piece is screwed in the second connecting hole from the direction of the reinforcing block pointing to the reinforcing beam.

[0063] Based on the above arrangement, the fixed connection between the base crossbeam and the reinforcing beam, and the fixed connection between the reinforcing block and the reinforcing beam can be achieved by the cooperation of the hole and the fixed connecting piece. This way can facilitate the assembly efficiency of the crossbeam structure, and facilitate the maintenance and replacement of parts in the later stage.

[0064] Optionally, the first connecting hole H1 and the second connecting hole H2 are threaded holes, and the first fixed connecting piece C1 and the second fixed connecting piece C2 are screws, bolts or screw rods, etc.

[0065] Optionally, referring to Figure 4 , the first connecting hole H1 and the second connecting hole H2 are different axes, or referring to Figure 5 , the first connecting hole H1 and the second connecting hole H2 are coaxial holes. That is, the fixed connection between the base crossbeam and the reinforcing beam, and the fixed connection between the reinforcing block and the reinforcing beam can be achieved by different holes, or the fixed connection between the base crossbeam, the reinforcing beam and the reinforcing block can be achieved at one time by the same hole.

[0066] When the fixing of the base beam, the reinforcing beam and the reinforcing block is realized at one time by means of the same hole, reference is made to Figure 5 The second connecting hole H2 (which is also the first connecting hole H1) at least penetrates the reinforcing block and the reinforcing beam and at least partially extends into the base beam, and the second fixing connecting piece (which is also the first fixing connecting piece) is tightened in the second connecting hole from the direction of the reinforcing block pointing to the reinforcing beam; or the second connecting hole H2 (which is also the first connecting hole H1) at least penetrates the base beam and the reinforcing beam and at least partially extends into the reinforcing block, and the second fixing connecting piece (which is also the first fixing connecting piece) is tightened in the second connecting hole from the direction of the base beam pointing to the reinforcing beam. In this way, the number of fixing connecting pieces can be reduced, and the cost is reduced, and the cooperation between the fixing connecting piece and the second connecting hole can resist the collision and extrusion in the xyz three directions. Figure 6 That is, the fixing of the base beam, the reinforcing beam and the reinforcing block is realized at one time by means of the same hole. Figure 6 (a) is a top view of the beam structure after removing the reinforcing block and the sealing piece, Figure 6 (b) is a top view of the beam structure after removing the reinforcing block, the sealing piece and the reinforcing beam, and it can be seen that the second connecting hole H2 directly penetrates the reinforcing beam and the base beam, and simultaneously acts as the aforementioned first connecting hole H1.

[0067] In some embodiments, reference is made to Figure 2 Or 6, the reinforcing beam 12 has at least one energy absorption hole 121.

[0068] By means of the energy absorption hole, the energy of the collision can be absorbed, and the deformation of the beam structure caused by the collision can be avoided, and the protection effect on the battery is improved.

[0069] Optionally, the energy absorption hole 121 can be multiple, and can be respectively distributed on both sides of the reinforcing block 13. Optionally, the number of energy absorption holes 121 respectively located on both sides of the reinforcing block 13 is the same, and the energy absorption holes 121 located on both sides of the reinforcing block 13 are symmetrically arranged with respect to the center of the reinforcing block 13. As Figure 6 Described, the number of energy absorption holes 121 distributed on both sides of the reinforcing block 13 is two respectively.

[0070] Optionally, the shape of the energy absorption hole 121 includes an oval, a circle, a quadrilateral, a pentagon or a hexagon, etc. Figure 6 In the embodiment, the energy absorption hole 121 is oval.

[0071] In some embodiments, reference is made to Figures 2-4The sealing member 14 has a center through hole 141, the reinforcing block 13 has a third fixing hole H3, and the battery box cross beam structure 1 further comprises a third fixing connecting member C3 which passes through the center through hole 141 and is screwed in the third fixing hole H3.

[0072] In this embodiment, the third fixing hole on the reinforcing block cooperates with the third fixing connecting member to fixedly connect the cross beam structure and the vehicle body structure together, thereby realizing the fixed connection of the battery box and the vehicle body structure together. The center through hole of the sealing member can ensure that the installation of the third fixing connecting member is not hindered, and at the same time, the sealing effect is ensured. Figure 2 or Figure 4 The vehicle body structure is not shown in the figure, but it can be understood that the third fixing connecting member at least passes through the corresponding connecting hole on the vehicle body structure and is screwed, and at the same time, the third fixing connecting member can also have a limiting head which can be located on the side of the vehicle body structure away from the reinforcing block, so as to limit the reinforcing block and the vehicle body structure from being separated from each other.

[0073] In some embodiments, referring to Figure 5 The third fixing hole H3 extends to the reinforcing beam 12 and penetrates the reinforcing beam 12, and / or continues to extend to the base cross beam 11, at least partially extends into the base cross beam 11 or penetrates the base cross beam 11; and the third fixing connecting member C3 also extends into the reinforcing beam 12, and / or continues to extend into the base cross beam 11.

[0074] In this embodiment, the third fixing hole can also continue to extend until it penetrates the reinforcing block, the reinforcing beam and even the base cross beam, and the third fixing connecting member can correspondingly extend into the reinforcing beam and even the base cross beam. In this way, the resistance to extrusion and collision in the xyz three directions can be realized by the cooperation of the third fixing hole and the third fixing connecting member, the overall anti-collision extrusion capability of the cross beam structure is improved, and better protection of the battery is realized. It should be noted that when the third fixing hole completely penetrates the reinforcing block, the reinforcing beam and the base cross beam, the third fixing connecting member can also be screwed into the third fixing hole from the base cross beam to the reinforcing beam, and at this time, the end of the third fixing connecting member is also screwed into the corresponding connecting hole on the vehicle body structure.

[0075] Optionally, the third fixing hole H3 is a threaded hole, and the third fixing connecting member C3 is a screw, a bolt or a screw rod, etc.

[0076] Optionally, the base cross beam is made of metal material and has a square or other shaped cross section. Optionally, the base cross beam is made of steel, aluminum or other metal or alloy material. Optionally, the base cross beam is designed as a hollow structure to reduce the weight of the battery box, or the base cross beam is designed as a solid structure to further ensure the anti-extrusion capability of the base cross beam.

[0077] Optionally, the reinforcing beams are made of metal material and have square or other shaped cross sections. Optionally, the reinforcing beams are made of steel, aluminum or other metal or alloy material. Optionally, the reinforcing beams are hollow designed to reduce the weight of the battery box, or solid designed to further ensure the extrusion resistance of the reinforcing beams.

[0078] Optionally, the reinforcing blocks are made of metal material. Optionally, the reinforcing blocks are made of steel, aluminum or other metal or alloy material. Optionally, the reinforcing blocks are hollow designed to reduce the weight of the battery box, or solid designed to further ensure the extrusion resistance of the reinforcing beams.

[0079] In summary, the battery box beam structure provided by the embodiments of the present disclosure can effectively improve the overall resistance of the battery box beam structure to external extrusion, meet the safety requirements of column impact and other extrusion forces, decompose the extrusion force in harsh working conditions, play an auxiliary strengthening role, prevent local collapse and bending from damaging the battery cells, greatly play the role of beam support, effectively avoid the deformation of the battery box, improve the protection effect on the battery, and at the same time, prevent the liquid in the battery cells from entering the vehicle body or prevent the liquid from flowing back from the vehicle body into the battery box, thereby improving the safety of the vehicle.

[0080] In a second aspect, the embodiments of the present disclosure provide a battery box. Referring to Figures 7-10 , the battery box comprises any one of the battery box beam structures 1 as described above.

[0081] Specifically, in some embodiments, the battery box 0 can be as shown in Figure 10 , which can be a quadrangular box, and the battery box beam structure 1 can be arranged in at least one of the box cover, the box side (i.e. the side of the box body) or the box bottom of the battery box 0. The battery box beam structure can be arranged in a single direction, or arranged in two intersecting directions (e.g. arranged in two orthogonal directions), etc.

[0082] As shown in Figure 7 , in some embodiments, the battery box beam structure can be arranged to locally arrange the reinforcing beams, the reinforcing blocks and the sealing members at different positions on the same base beam. Optionally, a set of reinforcing beams, reinforcing blocks and sealing members can be arranged on each side of the center of the base beam. It should be noted that for the parts that do not need to be connected to the vehicle body, only the reinforcing beams and the reinforcing blocks can be arranged, and the sealing members can not be arranged.

[0083] As shown in Figure 8As shown, in some embodiments, at least one side of the battery box has two perpendicularly intersecting crossbeam structures. For the shorter crossbeam structure, a set of reinforcing beams and reinforcing blocks are provided at its center (whether or not to provide a seal depends on whether it needs to be connected to the vehicle body). For the longer crossbeam structure, a set of reinforcing beams and reinforcing blocks are arranged on both sides of its center (whether or not to provide a seal depends on whether it needs to be connected to the vehicle body).

[0084] like Figure 9 As shown, in some embodiments, at least one side of the battery box housing has two perpendicularly intersecting crossbeam structures. For any crossbeam structure, a set of reinforcing beams and reinforcing blocks are arranged on both sides of its center position (whether or not to provide a seal depends on whether it needs to be connected to the vehicle body).

[0085] In another embodiment, reinforcing structures can be provided at the joints between different surfaces of the battery box. It should be noted that the basic crossbeam in the aforementioned crossbeam structure can be pre-fixed to the box body by welding or other methods.

[0086] As can be seen, any face of the battery box in this embodiment can be equipped with a reinforcing structure (reinforcing beam and reinforcing block) as needed. The number and position of the reinforcing structure on each face can also be adjusted arbitrarily as needed. Reinforcing structures can be specifically set in positions that are prone to compression.

[0087] In summary, the battery box provided in this embodiment, by means of reinforcing beams and reinforcing blocks installed on the base crossbeam, can effectively improve the overall resistance of the battery box crossbeam structure to external compression, meet the safety requirements of extrusion forces such as column impacts, decompose the extrusion force under harsh working conditions, play an auxiliary reinforcement role, prevent local collapse and bending that could damage the battery cells, greatly enhance the supporting role of the crossbeam, effectively avoid battery box deformation, improve the protection effect on the battery, and at the same time, prevent liquid from the battery cells from entering the vehicle body or prevent liquid from flowing back into the battery box from the vehicle body, thereby improving vehicle safety.

[0088] Thirdly, embodiments of this disclosure provide a vehicle including any of the battery box crossbeam structures 1 as described above, or including the battery box 0 as described above.

[0089] In summary, the battery box of the vehicle provided by the embodiment of the present disclosure can effectively improve the resistance of the whole battery box beam structure to external extrusion by means of the reinforcing beams and reinforcing blocks arranged on the base beam, meet the safety requirements of extrusion force such as column impact, decompose the extrusion force in harsh working conditions, play an auxiliary reinforcing role, prevent local collapse and bending from damaging the battery cells, greatly exert the supporting role of the beam, effectively avoid the deformation of the battery box, improve the protection effect on the battery, and at the same time, prevent the liquid in the battery cells from entering the vehicle body or prevent the liquid from flowing back from the vehicle body into the battery box, thereby improving the safety of the vehicle.

[0090] In the present disclosure, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. The term "a plurality of" refers to two or more, unless otherwise explicitly limited.

[0091] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon considering the description hereof, and the disclosure is intended to cover any alternatives, modifications, and equivalents of the embodiments of the present disclosure that fall within the general principles of the present disclosure and include common general knowledge or conventional techniques in the art that are not disclosed in the present disclosure. The specification and examples are only considered to be illustrative.

[0092] It should be understood that the present disclosure is not limited to the precise structures described and shown in the drawings above, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A battery case cross member structure characterized by, The battery box crossbeam structure (1) comprises a base beam (11), a reinforcing beam (12), a reinforcing block (13) and a sealing member (14); The reinforcing beam (12) is installed on the base beam (11), and the extending direction of the reinforcing beam (12) is the same as that of the base beam (11); The reinforcing block (13) is installed on the reinforcing beam (12), and the reinforcing block (13) has an extending table (131), and the extending direction of the extending table (131) is the same as that of the base beam (11); The sealing member (14) is installed on the reinforcing block (13); The side of the reinforcing block (13) away from the reinforcing beam (12) has a limiting groove (132), and at least part of the sealing member (14) is located in the limiting groove (132); The sealing member (14) has a center through hole (141), the reinforcing block (13) has a third fixing hole (H3), and the battery box crossbeam structure (1) further comprises a third fixed connecting piece (C3), the third fixed connecting piece (C3) passes through the center through hole (141) and is screwed in the third fixing hole (H3).

2. The battery case cross member structure according to claim 1, characterized by The base beam (11) and the reinforcing beam (12) are in welded connection, and / or the reinforcing beam (12) and the reinforcing block (13) are in welded connection.

3. The battery case beam structure according to claim 1, characterized by The base beam (11) and the reinforcing beam (12) have a first connecting hole (H1) in communication, and the battery box crossbeam structure (1) further has a first fixed connecting piece (C1), the first fixed connecting piece (C1) being screwed in the first connecting hole (H1); The reinforcing beam (12) and the reinforcing block (13) have a second connecting hole (H2) in communication, and the battery box crossbeam structure (1) further has a second fixed connecting piece (C2), the second fixed connecting piece (C2) being screwed in the second connecting hole (H2).

4. The battery case cross member structure according to claim 1, characterized by The reinforcing beam (12) has at least one energy absorption hole (121).

5. The battery box cross member structure of claim 1, wherein The third fixing hole (H3) extends to the reinforcing beam (12) and penetrates the reinforcing beam (12), and / or continues to extend to the base beam (11), at least partially extends into the base beam (11) or penetrates the base beam (11); the third fixed connecting piece (C3) also extends into the reinforcing beam (12), and / or continues to extend into the base beam (11).

6. A battery box characterized by The battery box crossbeam structure (1) comprises the battery box crossbeam structure (1) according to any one of claims 1-5.

7. A vehicle characterized by comprising: The battery box crossbeam structure (1) comprises the battery box crossbeam structure (1) according to any one of claims 1-5, or the battery box (0) comprises the battery box crossbeam structure (1) according to claim 6.

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