Battery box cross beam structure, battery box and vehicle

Abstract

The invention provides a battery box cross beam structure, a battery box and a vehicle. The battery box cross beam structure comprises a basic cross beam, a reinforcing beam and a reinforcing block, the reinforcing beams are installed on the foundation cross beams, and the extending direction of the reinforcing beams is the same as that of the foundation cross beams; the reinforcing blocks are installed on the reinforcing beams, the reinforcing blocks are provided with extending table tops, and the extending direction of the extending table tops is the same as the extending direction of the foundation cross beams. According to the scheme, the protection strength of the battery can be improved, and the probability that the battery is damaged during vehicle collision is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular to a battery box crossbeam structure, a battery box and a vehicle. Background Art

[0002] As electric vehicles become more and more popular, the structure of battery boxes for installing batteries is also constantly improving. The battery box is used to hold, install and protect the battery, and the battery box may have a crossbeam structure that can resist external compression.

[0003] In the related art, in the event of a collision, the battery of a car is mainly protected by the crossbeam structure in the battery box.

[0004] However, when the vehicle is involved in a severe collision, the crossbeam structure of the battery box may be severely deformed, resulting in poor protection for the battery. Summary of the invention

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

[0006] Specifically, the following technical solutions are included:

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

[0008] The reinforcing beam is installed on the basic beam, and the extending direction of the reinforcing beam is the same as the extending direction of the basic beam;

[0009] The reinforcement block is installed on the reinforcement beam, and the reinforcement block has an extension table surface, and the extension direction of the extension table surface is the same as the extension direction of the basic cross beam.

[0010] Optionally, the battery box crossbeam structure further includes a seal, and the seal is installed on the reinforcement block.

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

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

[0013] Optionally, the basic 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 tightened in the first connecting hole;

[0014] The reinforcing beam and the reinforcing block have a second connecting hole in communication, and the battery box crossbeam structure also has a second fixed connecting member, which is screwed into the second connecting hole.

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

[0016] Optionally, the sealing member has a central through hole, the reinforcing block has a third fixing hole, and the battery box crossbeam structure further includes a third fixing connector, which passes through the central through hole and is tightened in the third fixing hole.

[0017] Optionally, the third fixing hole extends toward the reinforcement beam and passes through the reinforcement beam, and / or continues to extend toward the basic beam, at least partially extends into the basic beam or passes through the basic beam; the third fixed connector also extends into the reinforcement beam, and / or continues to extend into the basic beam.

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

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

[0020] The disclosed embodiments provide a battery box crossbeam structure, a battery box and a vehicle. A reinforcing beam and a reinforcing block are further provided on the base crossbeam of the battery box crossbeam structure. The extension direction of the reinforcing beam and the extension direction of the extension table of the reinforcing block are the same as the extension direction of the base crossbeam. Therefore, when a collision occurs in the vehicle, the crossbeam structure can effectively enhance its resistance to stress in its extension direction, which can effectively avoid serious deformation of the battery box, thereby better ensuring that the battery is not damaged due to squeezing, thereby improving the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A front view of a battery box crossbeam structure provided by an embodiment of the present disclosure;

[0023] Figure 2 A top view of a battery box crossbeam structure provided in an embodiment of the present disclosure;

[0024] Figure 3A schematic diagram of the structure of a seal provided in an embodiment of the present disclosure;

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

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

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

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

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

[0030] Fig. 9 A schematic diagram of the arrangement of a battery box crossbeam structure in a battery box provided in an embodiment of the present disclosure;

[0031] Fig.10 A schematic diagram of a battery box provided in accordance with an embodiment of the present disclosure.

[0032] The reference numerals in the figures represent respectively:

[0033] 0-battery box;

[0034] 1-Battery box crossbeam structure;

[0035] 11- Foundation beam;

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

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

[0038] 14-seal; 141-center through hole;

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

[0040] C1-first fixed connection member; C2-second fixed connection member; C3-third fixed connection member.

[0041] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

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

[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 more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0046] In a first aspect, an embodiment of the present disclosure provides a battery box crossbeam structure.

[0047] refer to Figure 1-2 , the battery box crossbeam structure 1 includes a basic crossbeam 11, a reinforcing beam 12 and a reinforcing block 13;

[0048] The reinforcement beam 12 is installed on the basic beam 11, and the extension direction of the reinforcement beam 12 is the same as the extension direction of the basic beam 11;

[0049] The reinforcement block 13 is installed on the reinforcement beam 12 . The reinforcement block 13 has an extension platform 131 . The extension direction of the extension platform 131 is the same as the extension direction of the basic beam 11 .

[0050] Optionally, the reinforcing block has an extended table surface, which may mean that the reinforcing block itself is in a long strip shape, or Figure 1 As shown, the reinforcing block 13 includes a main body 133 , one side or both sides of the main body 133 have a relatively protruding extension structure (ie, an extension platform 131 ), and the thickness of the extension structure is different from that of the main body 133 . Figure 1 In the example, the reinforcing block includes a main body and extension structures protruding from both sides of the main body, and the thickness of the extension structure is less than the thickness of the main body. In practice, the shape of the reinforcing block can also be adjusted according to needs. Figure 1The shape of the reinforcement block is convenient for connecting the cross beam structure with other parts (such as the vehicle body, etc.) at the main body, and for connecting the reinforcement block with the reinforcement beam, etc. by means of the extension structure, which effectively strengthens the strength of the location of the block and avoids serious collapse of the connection location in a collision. At the same time, with the help of the extension table on both sides, the force on the reinforcement block as a whole can be decomposed on both sides of the main body, so that the reinforcement beam and the basic cross beam can jointly bear the extrusion force, avoiding local and overall serious deformation of the cross beam structure.

[0051] Optionally, the main body 133 of the reinforcing block 13 may be a convex block protruding in a direction away from the reinforcing beam 12 relative to the extended table surface 131. Optionally, the main body 133 may be a polygonal boss, such as a quadrangular pyramid, a pentagonal pyramid, or a hexagonal pyramid. Further, the main body 133 may be a regular polygonal boss, and the extension structures on both sides of the main body are arranged symmetrically relative to the main body 133, so that the extrusion force is evenly decomposed on both sides of the main body.

[0052] The battery box crossbeam structure provided in the embodiment of the present disclosure is further provided with a reinforcing beam and a reinforcing block on the basic crossbeam. The extension direction of the reinforcing beam and the extension direction of the extension table of the reinforcing block are the same as the extension direction of the basic crossbeam. Therefore, when a vehicle collides, the crossbeam structure can effectively enhance its resistance to stress in its extension direction, which can effectively avoid serious deformation of the battery box, thereby better ensuring that the battery is not damaged due to squeezing, thereby improving the safety of the vehicle.

[0053] In some embodiments, reference Figure 1-2 The battery box cross beam structure 1 also includes a seal 14 , which is installed on the reinforcement block 13 .

[0054] In this embodiment, the battery box crossbeam structure needs to be connected to the vehicle body structure to achieve the battery box fixedly mounted on the vehicle body. The seal is located between the reinforcement block and the vehicle body structure, which can effectively prevent the battery in the battery box from leaking into the vehicle body, and prevent water from leaking into the battery box when the vehicle body is flooded.

[0055] Optional, reference Figure 2 A side of the reinforcing block 13 away from the reinforcing beam 12 has a limiting groove 132 , and at least a portion of the sealing member 14 is located in the limiting groove 132 .

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

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

[0058] In some embodiments, the base beam 11 and the reinforcement beam 12 are connected by welding, and / or the reinforcement beam 12 and the reinforcement block 13 are connected by welding.

[0059] By using welding to achieve a fixed connection between the foundation beam and the reinforcement beam, as well as a fixed connection between the reinforcement beam and the reinforcement block, the firmness and stability of the connection between the foundation beam and the reinforcement beam, and between the reinforcement beam and the reinforcement block can be effectively ensured, while the cost is low.

[0060] In some embodiments, reference Figure 4 The basic cross beam 11 and the reinforcing beam 12 have a first connecting hole H1 that is in communication, and the battery box cross beam structure 1 also has a first fixed connector C1, which is screwed into the first connecting hole H1;

[0061] The reinforcing beam 12 and the reinforcing block 13 have a communicating second connection hole H2, and the battery box cross beam structure 1 also has a second fixed connection member C2, and the second fixed connection member C2 is screwed into the second connection hole H2.

[0062] In this embodiment, the first connecting hole passes through at least one of the basic beam and the reinforcement beam, and the first fixed connecting member is tightened in the first connecting hole from the reinforcement beam to the basic beam (in this case, the first connecting hole at least passes through the reinforcement beam), or is tightened in the first connecting hole from the basic beam to the reinforcement beam (in this case, the first connecting hole at least passes through the basic beam). Figure 4 The example in which the first connection hole penetrates the reinforcing beam and partially extends into the foundation beam is used for demonstration. The second connection hole at least penetrates the reinforcing block and in some cases continues to penetrate the reinforcing beam, and the second fixed connection member is tightened in the second connection hole from the reinforcing block to the reinforcing beam.

[0063] Based on the above arrangement, the basic cross beam and the reinforcing beam can be fixedly connected, and the reinforcing block and the reinforcing beam can be fixedly connected by means of the cooperation between the hole and the fixed connector. This method is convenient for improving the assembly efficiency of the cross beam structure and is convenient for later maintenance and replacement of components.

[0064] Optionally, the first connection hole H1 and the second connection hole H2 are threaded holes, and the first fixed connection member C1 and the second fixed connection member C2 are screws, bolts or threaded rods.

[0065] Optional, reference Figure 4 The first connecting hole H1 and the second connecting hole H2 are not on the same axis, or refer to Figure 5 The first connection hole H1 and the second connection hole H2 are coaxial holes. That is to say, different holes can be used to respectively fix the basic cross beam and the reinforcing beam, and the reinforcing block and the reinforcing beam, or the same hole can be used to fix the basic cross beam, the reinforcing beam and the reinforcing block at one time.

[0066] When the same holes are used to fix the foundation beam, reinforcement beam and reinforcement block at one time, refer to Figure 5 , the second connection hole H2 (also the first connection hole H1) at least passes through the reinforcement block and the reinforcement beam, and at least partially extends into the basic cross beam, at which time the second fixed connection member (also the first fixed connection member) is tightened in the second connection hole from the reinforcement block to the reinforcement beam; or, the second connection hole H2 (also the first connection hole H1) at least passes through the basic cross beam and the reinforcement beam, and at least partially extends into the reinforcement block, at which time the second fixed connection member (also the first fixed connection member) is tightened in the second connection hole from the basic cross beam to the reinforcement beam. In this way, the number of fixed connections can be reduced, the cost can be reduced, and at the same time, the cooperation between the fixed connection member and the second connection hole can achieve resistance to collision and extrusion in the three directions of x, y, and z. Figure 6 That is, the various components of the beam structure are demonstrated by taking the example of using the same holes to fix the basic beam, the reinforcement beam and the reinforcement block at one time. Figure 6 (a) is a top view of the crossbeam structure after the reinforcement block and seal are removed. Figure 6 (b) is a top view of the cross beam structure after removing the reinforcing block, the seal and the reinforcing beam. It can be seen that the second connection hole H2 directly penetrates the reinforcing beam and the basic cross beam, and at the same time serves as the aforementioned first connection hole H1.

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

[0068] With the help of energy-absorbing holes, the energy of the collision can be absorbed, avoiding the collision directly causing deformation of the beam structure, thereby improving the protection effect on the battery.

[0069] Optionally, there may be multiple energy absorption holes 121, and they may be respectively distributed on both sides of the reinforcement block 13. Optionally, the number of energy absorption holes 121 located on both sides of the reinforcement block 13 is the same, and the energy absorption holes 121 located on both sides of the reinforcement block 13 are symmetrically arranged relative to the center of the reinforcement block 13. Figure 6 As mentioned above, the number of the energy absorbing holes 121 distributed on both sides of the reinforcement block 13 is two respectively.

[0070] Optionally, the shape of the energy absorbing hole 121 includes oval, circular, quadrilateral, pentagon or hexagon, etc. Figure 6 The energy absorbing hole 121 is elliptical for exemplary display.

[0071] In some embodiments, reference Figure 2-4The sealing member 14 has a central through hole 141, the reinforcing block 13 has a third fixing hole H3, and the battery box cross beam structure 1 also includes a third fixing connector C3, which passes through the central through hole 141 and is tightened in the third fixing hole H3.

[0072] In this embodiment, the third fixing hole on the reinforcement block cooperates with the third fixed connecting piece to fix the beam structure and the body structure together, thereby fixing the battery box and the body structure together. The central through hole of the seal can ensure that it does not hinder the installation of the third fixed connecting piece while ensuring the sealing effect. Figure 2 or Figure 4 The body structure is not shown, but it can be understood that the third fixed connector at least passes through the corresponding connection hole on the body structure and is tightened. At the same time, the third fixed connector can also have a limiting head, which can be located on the side of the body structure away from the reinforcement block, thereby limiting the reinforcement block and the body structure from being separated from each other.

[0073] In some embodiments, reference Figure 5 The third fixing hole H3 extends toward the reinforcing beam 12 and penetrates the reinforcing beam 12, and / or continues to extend toward the basic beam 11, at least partially extends into the basic beam 11 or penetrates the basic beam 11; the third fixed connector C3 also extends into the reinforcing beam 12, and / or continues to extend into the basic beam 11.

[0074] In this embodiment, the third fixing hole can further extend until it penetrates the reinforcement block, the reinforcement beam and even the basic crossbeam, and the third fixed connector can correspondingly extend into the reinforcement beam and even the basic crossbeam. In this way, with the help of the third fixing hole and the third fixed connector, it is possible to achieve resistance to extrusion and collision in the three directions of xyz, improve the overall anti-collision and extrusion ability of the crossbeam structure, and thus achieve better protection for the battery. It should be noted that when the third fixing hole completely penetrates the reinforcement block, the reinforcement beam and the basic crossbeam, the third fixed connector can also be screwed into and tightened in the third fixing hole from the direction of the basic crossbeam to the reinforcement beam. At this time, the end of the third fixed connector is also tightened in the corresponding connection hole on the vehicle body structure.

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

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

[0077] Optionally, the reinforcing beam is made of metal and has a square or other shaped cross section. Optionally, the reinforcing beam is made of steel, aluminum or other metal or alloy material. Optionally, the reinforcing beam is hollow in design to reduce the weight of the battery box, or the reinforcing beam is solid in design to further ensure the anti-extrusion ability of the reinforcing beam.

[0078] Optionally, the reinforcement block is made of metal. Optionally, the reinforcement block is made of steel, aluminum or other metal or alloy material. Optionally, the reinforcement block is hollow in design to reduce the weight of the battery box, or the reinforcement block is solid in design to further ensure the anti-extrusion ability of the reinforcement beam.

[0079] To summarize, the battery box crossbeam structure provided in the embodiment of the present disclosure, with the aid of the reinforcing beams and reinforcing blocks arranged on the base crossbeams, can effectively improve the overall resistance of the battery box crossbeam structure to external extrusion, meet the safety requirements of extrusion force such as column collision, decompose the extrusion force under harsh working conditions, play an auxiliary reinforcement role, and prevent local collapse and bending from damaging the battery cells. It greatly plays the supporting role of the crossbeam, effectively avoids deformation of the battery box, and improves the protection effect on the battery. At the same time, it can prevent the liquid in the battery cell 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 present disclosure provides a battery box. Figure 7-10 The battery box includes any one of the battery box crossbeam structures 1 described above.

[0081] Specifically, in some embodiments, the battery box 0 can be as follows Fig.10 As shown, it can be expressed as a cube, and the battery box crossbeam structure 1 can be arranged on at least one of the box cover, box side (i.e., the side of the box body) or box bottom of the battery box 0. The battery box crossbeam structure can be arranged in a single direction, or in two intersecting directions (for example, in two orthogonal directions).

[0082] like Figure 7 As shown, in some embodiments, the battery box crossbeam structure can be expressed as reinforcing beams, reinforcing blocks and sealing members are locally arranged at different positions on the same basic crossbeam. Optionally, a group of reinforcing beams, reinforcing blocks and sealing members can be arranged on both sides of the center of the basic crossbeam. It should be noted that for the parts that do not need to be connected to the vehicle body, only reinforcing beams and reinforcing blocks can be arranged without sealing members.

[0083] like Figure 8As shown, in some embodiments, at least one surface of the battery box body has two vertically intersecting beam structures, and for a shorter beam structure, a group of reinforcing beams and reinforcing blocks are arranged at its center position (whether to set a seal is determined based on whether it needs to be connected to the vehicle body), and for a longer beam structure, a group of reinforcing beams and reinforcing blocks are arranged on both sides of its center position (whether to set a seal is determined based on whether it needs to be connected to the vehicle body).

[0084] like Fig. 9 As shown, in some embodiments, at least one surface of the battery box body has two vertically intersecting cross-beam structures. For any cross-beam structure, a group of reinforcing beams and reinforcing blocks are arranged on both sides of its center position (whether to set a seal is determined based on whether it needs to be connected to the vehicle body).

[0085] In another embodiment, a reinforcement structure may 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 may be fixed in the box in advance by welding or the like.

[0086] It can be seen that any surface of the battery box in the embodiment of the present disclosure can be provided with a reinforcing structure (reinforcing beam and reinforcing block) as required, and the number and position of the reinforcing structure provided on each surface can also be adjusted arbitrarily as required, and the reinforcing structure can be specifically provided at positions susceptible to extrusion.

[0087] To summarize, the battery box provided in the embodiments of the present invention can effectively improve the overall resistance of the battery box beam structure to external extrusion by means of the reinforcing beams and reinforcing blocks arranged on the base beams, meet the safety requirements of extrusion pressure such as column collision, decompose the extrusion pressure under harsh working conditions, play an auxiliary reinforcement role, and prevent local collapse and bending from damaging the battery cells. It greatly plays the supporting role of the beams, effectively avoids deformation of the battery box, and improves the protection effect on the battery. At the same time, it can prevent the battery cell liquid 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.

[0088] In a third aspect, an embodiment of the present disclosure provides a vehicle, comprising any one of the battery box cross beam structures 1 as described above, or comprising the battery box 0 as described above.

[0089] To sum up, in the battery box of the vehicle provided by the embodiment of the present disclosure, with the help of the reinforcing beams and reinforcing blocks arranged on the basic cross beams, the overall resistance of the battery box cross beam structure to external extrusion can be effectively improved, and the safety requirements of extrusion force such as column collision can be met. The extrusion force can be decomposed under harsh working conditions to play an auxiliary reinforcement role and prevent local collapse and bending from damaging the battery cells. The supporting role of the cross beam is greatly exerted, and the deformation of the battery box is effectively avoided. The protection effect on the battery is improved. At the same time, it can prevent the liquid in the battery cell 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 used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.

[0091] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the present disclosure disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only.

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

Claims

1. A battery box crossbeam structure, characterized in that: It comprises a basic cross beam (11), a reinforcing beam (12) and a reinforcing block (13); The reinforcing beam (12) is installed on the basic cross beam (11), and the extending direction of the reinforcing beam (12) is the same as the extending direction of the basic cross beam (11); 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 the extension direction of the basic cross beam (11).

2. The battery box crossbeam structure according to claim 1, characterized in that: The battery box crossbeam structure (1) further comprises a sealing member (14), wherein the sealing member (14) is mounted on the reinforcing block (13).

3. The battery box crossbeam structure according to claim 2, characterized in that: The reinforcing block (13) has a limiting groove (132) on one side away from the reinforcing beam (12), and at least a portion of the sealing element (14) is located in the limiting groove (132).

4. The battery box crossbeam structure according to any one of claims 1 to 3, characterized in that: The basic cross beam (11) and the reinforcing beam (12) are connected by welding, and / or the reinforcing beam (12) and the reinforcing block (13) are connected by welding.

5. The battery box crossbeam structure according to any one of claims 1 to 3, characterized in that: The basic cross beam (11) and the reinforcing beam (12) have a first connecting hole (H1) in communication, and the battery box cross beam structure (1) also has a first fixed connecting member (C1), and the first fixed connecting member (C1) is screwed into the first connecting hole (H1); The reinforcing beam (12) and the reinforcing block (13) have a second connecting hole (H2) that is connected, and the battery box crossbeam structure (1) also has a second fixed connecting member (C2), and the second fixed connecting member (C2) is screwed into the second connecting hole (H2).

6. The battery box crossbeam structure according to any one of claims 1 to 3, characterized in that: The reinforcing beam (12) is provided with at least one energy absorbing hole (121).

7. The battery box crossbeam structure according to any one of claims 2-3, characterized in that: The sealing member (14) has a central through hole (141), the reinforcing block (13) has a third fixing hole (H3), and the battery box cross beam structure (1) also includes a third fixing connecting member (C3), and the third fixing connecting member (C3) passes through the central through hole (141) and is tightened in the third fixing hole (H3).

8. The battery box crossbeam structure according to claim 7, characterized in that: The third fixing hole (H3) extends toward the reinforcing beam (12) and penetrates the reinforcing beam (12), and / or continues to extend toward the basic cross beam (11), at least partially extends into the basic cross beam (11) or penetrates the basic cross beam (11); the third fixing connector (C3) also extends into the reinforcing beam (12), and / or continues to extend into the basic cross beam (11).

9. A battery box, characterized in that: It comprises a battery box crossbeam structure (1) as described in any one of claims 1 to 8.

10. A vehicle, characterized in that: It comprises the battery box crossbeam structure (1) as described in any one of claims 1 to 8, or comprises the battery box (0) as described in claim 9.

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