Connecting beam

Abstract

The invention discloses a connecting beam, which belongs to the technical field of batteries and comprises a first supporting part, an isolating part, a second supporting part and a reinforcing part, the isolation part is connected to one side of the first supporting part in the first direction. The second supporting part is connected to one side of the first supporting part in the second direction. The reinforcing part is arranged between the first supporting part and the second supporting part in the second direction and connected with the first supporting part and the second supporting part. The reinforcing part is arranged on the supporting part, so that the mechanical properties of the first supporting part and the second supporting part are improved, and the first supporting part and the second supporting part can be prevented from being torn.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and particularly relates to a connecting beam. Background Art

[0002] The frame of a battery pack includes connecting beams for supporting side beams, preventing the frame of the battery pack from deforming under force, and improving the reliability and service life of the battery pack.

[0003] During the manufacturing process of the connecting beam, multiple pipes need to be welded together, resulting in a relatively large heat influence. There is a risk of tearing in the welded connecting beam. Summary of the Invention

[0004] Object of the Invention: This application provides a connecting beam to solve the technical problem of the risk of tearing in the connecting beam.

[0005] Technical Solution: This application provides a connecting beam, including:

[0006] A first support portion;

[0007] An isolation portion, which is connected to one side of the first support portion along a first direction;

[0008] A second support portion, which is connected to one side of the first support portion along a second direction;

[0009] A reinforcing portion, which is arranged between the first support portion and the second support portion along the second direction and is respectively connected to the first support portion and the second support portion.

[0010] In some embodiments, the reinforcing portion includes:

[0011] A first plate member, which is arranged between the first support portion and the second support portion along the second direction and is respectively connected to the first support portion and the second support portion;

[0012] A second plate member, which is arranged between the first support portion and the second support portion along the second direction and is respectively connected to the first support portion and the second support portion; the second plate member is arranged on one side of the first plate member along the first direction;

[0013] At least one of the first plate member and the second plate member protrudes towards the other along the first direction and is connected to the other.

[0014] In some embodiments, the first plate member includes a first stretching sub - portion, a first connecting sub - portion, and a second stretching sub - portion. The first connecting sub - portion is disposed between the first stretching sub - portion and the second stretching sub - portion along the second direction and connects the first stretching sub - portion and the second stretching sub - portion respectively. The first stretching sub - portion is connected to the first support portion. The second stretching sub - portion is connected to the second support portion.

[0015] The second plate member includes a third stretching sub - portion, a second connecting sub - portion, and a fourth stretching sub - portion. The second connecting sub - portion is disposed between the third stretching sub - portion and the fourth stretching sub - portion along the second direction and connects the third stretching sub - portion and the fourth stretching sub - portion respectively. The second connecting sub - portion is connected to one side of the first connecting sub - portion along the first direction. The third stretching sub - portion is spaced from the first stretching sub - portion along the first direction and is connected to the first support portion. The fourth stretching sub - portion is spaced from the second stretching sub - portion along the first direction and is connected to the second support portion.

[0016] In some embodiments, the first support portion includes a third plate member and a fourth plate member that are spaced apart along the first direction. The isolation portion is connected to a side of the third plate member away from the fourth plate member along the first direction. The third plate member is connected to the first plate member, and the fourth plate member is connected to the second plate member.

[0017] In some embodiments, the second support portion includes:

[0018] A fifth plate member that is connected to a side of the first plate member away from the first support portion along the second direction;

[0019] A sixth plate member that is spaced from the fifth plate member along the first direction and is connected to a side of the second plate member away from the first support portion along the second direction;

[0020] A first bending portion that is connected to an end of the fifth plate member away from the first plate member along the second direction. An end of the sixth plate member away from the second plate member along the second direction is connected to an end of the first bending portion away from the fifth plate member.

[0021] In some embodiments, the first bending portion has a maximum bending radius R1. Along the first direction, the maximum distance a between the fifth plate member and the sixth plate member satisfies: a≥2R1 and 3mm≤R1≤5mm;

[0022] Along the second direction, the maximum dimension b of the isolation portion satisfies: 10mm≤b≤19mm;

[0023] Along the second direction, the first support portion has a maximum dimension c, satisfying: 20 mm ≤ c ≤ 29 mm. In some embodiments, the third plate member has a third surface facing away from the fourth plate member; the fifth plate member has a fifth surface facing away from the sixth plate member; the first plate member protrudes toward the second plate member along the first direction and forms a first groove. The first plate member has a first groove wall and a second groove wall for enclosing the first groove. The first groove wall is connected to the third surface and forms an angle α1 with the third surface. The second groove wall is connected to the fifth surface and forms an angle α3 with the fifth surface, satisfying: 100° ≤ α1 ≤ 160°, 100° ≤ α3 ≤ 160°; and / or,

[0024] The fourth plate member has a fourth surface facing away from the third plate member; the sixth plate member has a sixth surface facing away from the fifth plate member; the second plate member protrudes toward the first plate member along the first direction and forms a second groove. The second plate member has a third groove wall and a fourth groove wall for enclosing the second groove. The third groove wall is connected to the fourth surface and forms an angle α2 with the fourth surface. The fourth groove wall is connected to the sixth surface and forms an angle α4 with the sixth surface, satisfying: 100° ≤ α2 ≤ 160°, 100° ≤ α4 ≤ 160°.

[0025] In some embodiments, the reinforcing portion further includes a second bending portion, a third bending portion, a fourth bending portion, and a fifth bending portion; the second bending portion is connected to the first plate member, the third plate member is connected to one end of the second bending portion away from the first plate member, and the second bending portion has a maximum bending radius R2;

[0026] The third bending portion is connected to one end of the first plate member away from the second bending portion, the fifth plate member is connected to one end of the third bending portion away from the first plate member, and the third bending portion has a maximum radius R3;

[0027] The fourth bending portion is connected to the second plate member, the fourth plate member is connected to one end of the fourth bending portion away from the second plate member, and the fourth bending portion has a maximum bending radius R4;

[0028] The fifth bending portion is connected to one end of the second plate member away from the fourth bending portion, the sixth plate member is connected to one end of the fourth bending portion away from the second plate member, and the fifth bending portion has a maximum radius R5;

[0029] Satisfying: 3 mm ≤ R2 ≤ 5 mm,

[0030] 3 mm ≤ R3 ≤ 5 mm,

[0031] 3 mm ≤ R4 ≤ 5 mm,

[0032] 3 mm ≤ R5 ≤ 5 mm.

[0033] In some embodiments, the connecting beam includes at least two of the second support portions. The at least two second support portions are spaced apart along the second direction. The first support portion is disposed along the second direction between two adjacent second support portions and is respectively connected to the two adjacent second support portions.

[0034] In some embodiments, the isolation portion includes:

[0035] a seventh plate member connected to the first support portion;

[0036] an eighth plate member connected to the first support portion. The seventh plate member and the eighth plate member are spaced apart along the second direction;

[0037] a ninth plate member disposed along the second direction between the seventh plate member and the eighth plate member and respectively connected to the seventh plate member and the eighth plate member;

[0038] wherein the ninth plate member has a first connection surface and a second connection surface. The first connection surface faces the second connection surface along the second direction. The first connection surface and the second connection surface are connected by a weld.

[0039] Advantageous effects: Compared with the prior art, the connecting beam provided in the embodiments of the present application includes a first support portion, an isolation portion, a second support portion, and a reinforcement portion. The isolation portion is connected to one side of the first support portion along the first direction. The second support portion is connected to one side of the first support portion along the second direction. The reinforcement portion is disposed along the second direction between the first support portion and the second support portion and is respectively connected to the first support portion and the second support portion. By providing the reinforcement portion on the support portion in the present application, the mechanical properties of the first support portion and the second support portion are improved, and tearing of the first support portion and the second support portion can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The following, in conjunction with the drawings, through a detailed description of the specific embodiments of the present application, will make the technical solutions and other advantageous effects of the present application obvious.

[0041] Figure 1 is a cross-sectional view of the connecting beam provided in the embodiment of the present application;

[0042] Figure 2 is Figure 1 a detail view of the middle frame at position A;

[0043] Figure 3 is another cross-sectional view of the connecting beam provided in the embodiment of the present application;

[0044] Figure 4 For Figure 1 Another detailed view of the middle frame at location A.

[0045] Reference numerals: 100 - first support portion, 110 - third plate member, 111 - third surface, 120 - fourth plate member, 121 - fourth surface, 200 - isolation portion, 210 - seventh plate member, 220 - eighth plate member, 230 - ninth plate member, 231 - first connection surface, 232 - second connection surface, 233 - weld seam, 300 - second support portion, 310 - fifth plate member, 311 - fifth surface, 320 - sixth plate member, 321 - sixth surface, 330 - first bending portion, 400 - reinforcement portion, 410 - first plate member, 411 - first stretching sub - portion, 412 - first connecting sub - portion, 413 - second stretching sub - portion, 414 - first surface, 415 - first groove, 416 - first groove wall, 417 - second groove wall, 420 - second plate member, 421 - third stretching sub - portion, 422 - second connecting sub - portion, 423 - fourth stretching sub - portion, 424 - second surface, 425 - second groove, 426 - third groove wall, 427 - fourth groove wall, 430 - second bending portion, 440 - third bending portion, 450 - fourth bending portion, 460 - fifth bending portion, 470 - weld mark. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0047] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations. In the description of the present application, "a plurality of" means two or more, unless otherwise clearly specifically limited. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0048] It should also be noted that in the accompanying drawings of the embodiments of the present application, arrows marked with X and Y respectively represent the first direction X and the second direction Y. The description of the present application introduces the first direction X and the second direction Y to more clearly express the relative position relationships involved in the present application. The first direction X and the second direction Y are two relative directions intersecting each other, rather than absolute orientations. In practical applications, the first direction X and the second direction Y can point to any orientation in space as long as their intersecting relationship is maintained.

[0049] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application.

[0050] To solve the technical problem that the connecting beam may be torn during use, the first embodiment of the present application provides a connecting beam. Please refer to Figure 1 , the connecting beam includes a first support portion 100, an isolation portion 200, a second support portion 300, and a reinforcement portion 400; the isolation portion 200 is connected to one side of the first support portion 100 along the first direction X; the second support portion 300 is connected to one side of the first support portion 100 along the second direction Y; the reinforcement portion 400 is disposed between the first support portion 100 and the second support portion 300 along the second direction Y and is respectively connected to the first support portion 100 and the second support portion 300.

[0051] Specifically, the isolation portion 200 is used to limit the single battery along the second direction Y, and the first support portion 100 and the second support portion 300 are used to limit the single battery along the first direction X.

[0052] Specifically, the connecting beam extends along the third direction, that is, the first support portion 100, the isolation portion 200, the second support portion 300, and the reinforcement portion 400 all extend along the third direction.

[0053] In the above embodiment, by providing the reinforcement portion 400 between the first support portion 100 and the second support portion 300, the mechanical properties at the first support member and the second support member are improved, the tearing of the first support member or the second support member during use is avoided, and the reliability and service life of the battery pack are improved.

[0054] In some embodiments, please refer to again Figure 1, the reinforcing part 400 includes a first plate member 410 and a second plate member 420. The first plate member 410 is disposed between the first support part 100 and the second support part 300 along the second direction Y, and is respectively connected to the first support part 100 and the second support part 300; the second plate member 420, the second plate member 420 is disposed between the first support part 100 and the second support part 300 along the second direction Y, and is respectively connected to the first support part 100 and the second support part 300; the second plate member 420 is disposed on one side of the first plate member 410 along the first direction X; one of the first plate member 410 and the second plate member 420 protrudes towards the other along the first direction X and is connected to the other.

[0055] In some embodiments, the first plate member 410 protrudes towards the second plate member 420 along the first direction X and is connected to the second plate member 420; in some other embodiments, the second plate member 420 protrudes towards the first plate member 410 along the first direction X and is connected to the first plate member 410; in still some other embodiments, please refer to Figure 1 , the first plate member 410 protrudes towards the second plate member 420 along the first direction X, the second plate member 420 protrudes towards the first plate member 410 along the first direction X, and is connected to the protruding part of the first plate member 410.

[0056] In the above embodiments, by making the first plate member 410 and / or the second plate member 420 protrude along the first direction X, at least part of the first support part 100 and the second support part 300 respectively form an arch structure along the first direction X, and the first support part 100 and the second support part 300 are not easily deformed. At the same time, since the reinforcing part 400 separates the first support part 100 and the second support part 300, the sizes of the arch structures formed by the first support part 100 and the second support part 300 along the second direction Y are both small, the mechanical properties of the arch structures are better, and the first support part 100 and the second support part 300 are more not easily deformed. While the first plate member 410 and the second plate member 420 make the first support part 100 and the second support part 300 form an arch structure after protruding, the protruding parts of the first plate member 410 and the second plate member 420 themselves also form an arch structure, the mechanical properties of the reinforcing member itself are also good and not easily deformed, which further improves the mechanical properties of the connecting beam and makes the reliability of the connecting beam better.

[0057] In some embodiments, please refer to Figure 1 and Figure 2, the first plate member 410 includes a first stretching sub - portion 411, a first connecting sub - portion 412, and a second stretching sub - portion 413. The first connecting sub - portion 412 is disposed between the first stretching sub - portion 411 and the second stretching sub - portion 413 along the second direction Y and connects the first stretching sub - portion 411 and the second stretching sub - portion 413 respectively. The first stretching sub - portion 411 is connected to the first support portion 100. The second stretching sub - portion 413 is connected to the second support portion 300. The second plate member 420 includes a third stretching sub - portion 421, a second connecting sub - portion 422, and a fourth stretching sub - portion 423. The second connecting sub - portion 422 is disposed between the third stretching sub - portion 421 and the fourth stretching sub - portion 423 along the second direction Y and connects the third stretching sub - portion 421 and the fourth stretching sub - portion 423 respectively. The second connecting sub - portion 422 is connected to one side of the first connecting sub - portion 412 along the first direction X. The third stretching sub - portion 421 is spaced from the first stretching sub - portion 411 along the first direction X and is connected to the first support portion 100. The fourth stretching sub - portion 423 is spaced from the second stretching sub - portion 413 along the first direction X and is connected to the second support portion 300.

[0058] Specifically, the first plate member 410 protrudes toward the second plate member 420 along the first direction X to form the first stretching sub - portion 411, the first connecting sub - portion 412, and the second stretching sub - portion 413. The second plate member 420 protrudes toward the first plate member 410 along the second direction Y to form the third stretching sub - portion 421, the second connecting sub - portion 422, and the fourth stretching sub - portion 423.

[0059] In some embodiments, the first connecting sub - portion 412 and the second connecting sub - portion 422 are in contact. The first connecting sub - portion 412 and the second connecting sub - portion 422 can limit the mutual position of the first plate member 410 and the second plate member 420 along the first direction X.

[0060] In some embodiments, the first connecting sub - portion 412 and the second connecting sub - portion 422 are fixedly connected by welding. Please refer to Figure 2 , the first connecting sub - portion 412 and the second connecting sub - portion 422 are welded to form a weld mark 470. Connecting the first connecting sub - portion 412 and the second connecting sub - portion 422 by welding can limit the mutual position of the first plate member 410 and the second plate member 420 along the second direction Y.

[0061] In the above embodiments, the first stretching sub - portion 411, the first connecting sub - portion 412, and the second stretching sub - portion 413 form an arch, and the mechanical properties of the first plate member 410 are better; the third stretching sub - portion 421, the second connecting sub - portion 422, and the fourth stretching sub - portion 423 form an arch, and the mechanical properties of the second plate member 420 are better. That is, the mechanical properties at the reinforcing member are better. At the same time, since the first support portion 100 is connected to the reinforcing member, the first support portion 100 is not easily deformed along the first direction X, is less likely to be torn, is not easily deformed along the second direction Y, and is less likely to be torn. Similarly, the second support portion 300 is not easily deformed in the first direction X and the second direction Y, and is less likely to be torn.

[0062] In some embodiments, referring to Figure 1 and Figure 2 , the first support portion 100 includes a third plate member 110 and a fourth plate member 120 arranged at intervals along the first direction X. The isolation portion 200 is connected to a side of the third plate member 110 away from the fourth plate member 120 along the first direction X. The third plate member 110 is connected to the first plate member 410, and the fourth plate member 120 is connected to the second plate member 420.

[0063] In the above embodiments, the first plate member 410 is connected to the third plate member 110, and the second plate member 420 is connected to the fourth plate member 120. Since the first plate member 410 and the second plate member 420 are not easily displaced relative to each other along the first direction X and the second direction Y, the third plate member 110 and the fourth plate member 120 are also not easily displaced relative to each other along the first direction X and the second direction Y. The structure of the first support portion 100 is more stable and has better mechanical properties.

[0064] In some embodiments, referring to Figure 1 and Figure 2 , the second support portion 300 includes a fifth plate member 310, a sixth plate member 320, and a first bending portion 330. The fifth plate member 310 is connected to a side of the first plate member 410 away from the first support portion 100 along the second direction Y; the sixth plate member 320 and the fifth plate member 310 are arranged at intervals along the first direction X, and the sixth plate member 320 is connected to a side of the second plate member 420 away from the first support portion 100 along the second direction Y; the first bending portion 330 is connected to an end of the fifth plate member 310 away from the first plate member 410 along the second direction Y, and an end of the sixth plate member 320 away from the second plate member 420 along the second direction Y is connected to an end of the first bending portion 330 away from the fifth plate member 310.

[0065] In the above embodiments, the fifth plate member 310 is connected to the first plate member 410, and the sixth plate member 320 is connected to the second plate member 420. Since the first plate member 410 and the second plate member 420 are not prone to relative displacement along the first direction X and the second direction Y, the fifth plate member 310 and the sixth plate member 320 are also not prone to relative displacement along the first direction X and the second direction Y. The structure of the second support portion 300 is more stable and has better mechanical properties.

[0066] In some embodiments, referring to Figure 1 and Figure 3 , the first bending portion 330 has a maximum bending radius R1; along the first direction X, there is a maximum distance a between the fifth plate member 310 and the sixth plate member 320, satisfying: a ≥ 2R1 and 3 mm ≤ R1 ≤ 5 mm.

[0067] Specifically, the value of R1 can be 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm. The larger the value of R1, the easier the processing of the first support portion 100. The smaller the value of R1, the better the mechanical properties of the first support portion 100. When the value of R1 is within the range defined in this application, the processing of the first support portion 100 is relatively easy, and the first support portion 100 can also have good mechanical properties.

[0068] Similarly, the value of a can be 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm. The smaller the value of a, the better the mechanical properties of the first support portion 100. The smaller the value of a, the better the mechanical properties of the first support portion 100. When the value of a is within the range defined in this application, the processing of the first support portion 100 is relatively easy, and the first support portion 100 can also have good mechanical properties.

[0069] In the above embodiments, by limiting the values of R1 and a, better mechanical properties can be obtained on the premise that the processing of the first support portion 100 is relatively easy.

[0070] In some embodiments, referring to Figure 3 , along the second direction Y, the isolation portion 200 has a maximum size b, satisfying: 10 mm ≤ b ≤ 19 mm.

[0071] Specifically, the value of b can be any value among 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm or any value within the range between any two of these values.

[0072] When the value of b is larger, the cross-sectional width of the isolation part 200 increases, and the load-bearing capacity of the isolation part 200 is improved to enhance the bending and shear resistance of the connecting beam, so that the connecting beam can bear a greater load; when the value of b is smaller, less material is used for the isolation part 200, and the volume of the connecting beam is smaller; when the value of b is within the range defined in the embodiments of the present application, the isolation part 200 has better bending and shear resistance, and less material is used for the connecting beam.

[0073] In the above embodiment, by defining the value of b, the isolation part 200 can have a smaller volume while ensuring bending and shear resistance, reducing the space occupied by the connecting beam.

[0074] In some embodiments, please refer to Figure 3 , along the second direction Y, the first support part 100 has a maximum dimension c, satisfying: 20 mm ≤ c ≤ 29 mm.

[0075] Specifically, the value of c can be any value among 20 mm, 20.5 mm, 21 mm, 21.5 mm, 22 mm, 22.5 mm, 23 mm, 23.5 mm, 24 mm, 24.5 mm, 25 mm, 25.5 mm, 26 mm, 26.5 mm, 27 mm, 27.5 mm, 28 mm, 28.5 mm, 29 mm or any value within the range between any two values.

[0076] When the value of c is larger, the cross-sectional width of the first support part 100 increases, and the load-bearing capacity of the first support part 100 is improved to enhance the bending and shear resistance of the connecting beam, so that the connecting beam can bear a greater load; when the value of c is smaller, less material is used for the first support part 100, and the volume of the connecting beam is smaller; when the value of c is within the range defined in the embodiments of the present application, the first support part 100 has better bending and shear resistance, and less material is used for the connecting beam.

[0077] In the above embodiment, by defining the value of c, the first support part 100 can have a smaller volume while ensuring bending and shear resistance, reducing the space occupied by the connecting beam.

[0078] In some embodiments, please refer to Figure 4, the third plate member 110 has a third surface 111 facing away from the fourth plate member 120; the fifth plate member 310 has a fifth surface 311 facing away from the sixth plate member 320; the first plate member 410 protrudes towards the second plate member 420 along the first direction X and forms a first groove 415. The first plate member 410 has a first groove wall 416 and a second groove wall 417 for enclosing the first groove 415. The first groove wall 416 is connected to the third surface 111 and forms an angle α1 with the third surface 111. The second groove wall 417 is connected to the fifth surface 311 and forms an angle α3 with the fifth surface 311, satisfying: 100° ≤ α1 ≤ 160°, 100° ≤ α3 ≤ 160°; and / or,

[0079] The fourth plate member 120 has a fourth surface 121 facing away from the third plate member 110; the sixth plate member 320 has a sixth surface 321 facing away from the fifth plate member 310; the second plate member 420 protrudes towards the first plate member 410 along the first direction X and forms a second groove 425. The second plate member 420 has a third groove wall 426 and a fourth groove wall 427 for enclosing the second groove 425. The third groove wall 426 is connected to the fourth surface 121 and forms an angle α2 with the fourth surface 121. The fourth groove wall 427 is connected to the sixth surface 321 and forms an angle α4 with the sixth surface 321, satisfying: 100° ≤ α2 ≤ 160°, 100° ≤ α4 ≤ 160°.

[0080] In some embodiments, the first plate member 410 further has a first surface 414 facing away from the second plate member 420. The first surface 414 is disposed between the first groove wall 416 and the second groove wall 417 and is respectively connected to the first groove wall 416 and the second groove wall 417.

[0081] In some embodiments, the second plate member 420 further has a second surface 424 facing away from the first plate member 410. The second surface 424 is disposed between the third groove wall 426 and the fourth groove wall 427 and is respectively connected to the third groove wall 426 and the fourth groove wall 427.

[0082] In some embodiments, the third plate member 110 has a third surface 111 facing away from the fourth plate member 120; the fifth plate member 310 has a fifth surface 311 facing away from the sixth plate member 320; the first plate member 410 protrudes towards the second plate member 420 along the first direction X and forms a first groove 415. The first plate member 410 has a first groove wall 416 and a second groove wall 417 for enclosing the first groove 415. The first groove wall 416 is connected to the third surface 111 and forms an angle α1 with the third surface 111. The second groove wall 417 is connected to the fifth surface 311 and forms an angle α3 with the fifth surface 311, satisfying: 100° ≤ α1 ≤ 160°, 100° ≤ α3 ≤ 160°; in some embodiments, the fourth plate member 120 has a fourth surface 121 facing away from the third plate member 110; the sixth plate member 320 has a sixth surface 321 facing away from the fifth plate member 310; the second plate member 420 protrudes towards the first plate member 410 along the first direction X and forms a second groove 425. The second plate member 420 has a third groove wall 426 and a fourth groove wall 427 for enclosing the second groove 425. The third groove wall 426 is connected to the fourth surface 121 and forms an angle α2 with the fourth surface 121. The fourth groove wall 427 is connected to the sixth surface 321 and forms an angle α4 with the sixth surface 321, satisfying: 100° ≤ α2 ≤ 160°, 100° ≤ α4 ≤ 160°; in some embodiments, the third plate member 110 has a third surface 111 facing away from the fourth plate member 120; the fifth plate member 310 has a fifth surface 311 facing away from the sixth plate member 320; the first plate member 410 protrudes towards the second plate member 420 along the first direction X and forms a first groove 415. The first plate member 410 has a first groove wall 416 and a second groove wall 417 for enclosing the first groove 415. The first groove wall 416 is connected to the third surface 111 and forms an angle α1 with the third surface 111. The second groove wall 417 is connected to the fifth surface 311 and forms an angle α3 with the fifth surface 311, and the fourth plate member 120 has a fourth surface 121 facing away from the third plate member 110; the sixth plate member 320 has a sixth surface 321 facing away from the fifth plate member 310; the second plate member 420 protrudes towards the first plate member 410 along the first direction X and forms a second groove 425. The second plate member 420 has a third groove wall 426 and a fourth groove wall 427 for enclosing the second groove 425. The third groove wall 426 is connected to the fourth surface 121 and forms an angle α2 with the fourth surface 121. The fourth groove wall 427 is connected to the sixth surface 321 and forms an angle α4 with the sixth surface 321, satisfying: 100° ≤ α1 ≤ 160°, 100° ≤ α2 ≤ 160°, 100° ≤ α3 ≤ 160°, 100° ≤ α4 ≤ 160°.

[0083] Specifically, the values of α1, α2, α3, and α4 can be equal or unequal, and the values of α1, α2, α3, and α4 can be any one of 100°, 105°, 110°, 115°, 120°, 125°, 130°, 135°, 140°, 145°, 150°, 155°, 160° or any value within the range between any two of these values.

[0084] When the values of α1, α2, α3, and α4 are larger, the number of roller groups required for the forming of the connecting beam is less, and the forming is simpler; when the values of α1, α2, α3, and α4 are smaller, the connecting beam can more effectively distribute and bear the load when stressed, so the bending resistance performance is stronger; when the values of α1, α2, α3, and α4 are within the range defined in the embodiments of the present application, the forming of the connecting beam is relatively simple and the bending resistance performance is good.

[0085] In the above embodiments, by limiting the values of α1, α2, α3, and α4, the forming of the connecting beam is relatively simple and has good bending resistance performance. In some embodiments, please refer to Figure 3 , the reinforcing portion 400 further includes a second bending portion 430, a third bending portion 440, a fourth bending portion 450, and a fifth bending portion 460; the second bending portion 430 is connected to the first plate member 410, the third plate member 110 is connected to one end of the second bending portion 430 away from the first plate member 410, and the second bending portion 430 has a maximum bending radius R2;

[0086] The third bending portion 440 is connected to one end of the first plate member 410 away from the second bending portion 430, the fifth plate member 310 is connected to one end of the third bending portion 440 away from the first plate member 410, and the third bending portion 440 has a maximum radius R3;

[0087] The fourth bending portion 450 is connected to the second plate member 420, the fourth plate member 120 is connected to one end of the fourth bending portion 450 away from the second plate member 420, and the fourth bending portion 450 has a maximum bending radius R4;

[0088] The fifth bending portion 460 is connected to one end of the second plate member 420 away from the fourth bending portion 450, the sixth plate member 320 is connected to one end of the fourth bending portion 450 away from the second plate member 420, and the fifth bending portion 460 has a maximum radius R5;

[0089] Satisfy: 3mm ≤ R2 ≤ 5mm,

[0090] 3mm ≤ R3 ≤ 5mm,

[0091] 3mm ≤ R4 ≤ 5mm,

[0092] 3mm ≤ R5 ≤ 5mm.

[0093] Specifically, the values ​​of R2, R3, R4, and R5 may be equal or different. The values ​​of R2, R3, R4, and R5 may be any value among 3mm, 3.5mm, 4mm, 4.5mm, and 5mm, or any value within the range between any two values.

[0094] When the values ​​of R2, R3, R4, and R5 are larger, the number of rolling wheels required for the forming of the reinforcement part 400 is smaller, and the forming of the reinforcement part 400 is simpler; when the values ​​of R2, R3, R4, and R5 are smaller, the connecting beam can distribute and bear the load more effectively when subjected to force, so the bending resistance is stronger; when the values ​​of R2, R3, R4, and R5 are within the range specified by the embodiment of the present application, the forming of the reinforcement part 400 is relatively simple and the bending resistance is better.

[0095] In the above embodiment, by limiting the values ​​of R2, R3, R4, and R5, the forming of the reinforcing portion 400 is relatively simple and the connecting beam has better bending resistance.

[0096] In some embodiments, see Figure 1 The connecting beam includes at least two second supporting portions 300 , and the at least two second supporting portions 300 are arranged at intervals along the second direction Y. The first supporting portion 100 is arranged between two adjacent second supporting portions 300 along the second direction Y and connects the two adjacent second supporting portions 300 , respectively.

[0097] In some embodiments, the connecting beam serves as an intermediate beam, and single cells are arranged on both sides of the isolation portion 200 along the second direction Y. In order to support the single cells on both sides of the isolation portion 200, a first support portion 100 and a second support portion 300 are arranged on both sides of the isolation portion 200 to support the single cells along the first direction X.

[0098] In the above embodiment, two first support parts 100 and two second support parts 300 are provided to support the single cells located on both sides of the partition part 200 along the second direction Y along the first direction X.

[0099] In some embodiments, the isolation portion 200 includes:

[0100] A seventh plate 210 , the seventh plate 210 is connected to the first supporting portion 100 ;

[0101] An eighth plate member 220, the eighth plate member 220 is connected to the first supporting portion 100, and the seventh plate member 210 and the eighth plate member 220 are spaced apart along the second direction Y;

[0102] A ninth plate 230, which is disposed between the seventh plate 210 and the eighth plate 220 along the second direction Y and connects the seventh plate 210 and the eighth plate 220 respectively;

[0103] Among them, the ninth plate member 230 has a first connection surface 231 and a second connection surface 232. The first connection surface 231 faces the second connection surface 232 along the second direction Y, and the first connection surface 231 and the second connection surface 232 are connected by a weld 233.

[0104] In some embodiments, the first plate member 410, the second plate member 420, the third plate member 110, the fourth plate member 120, the fifth plate member 310, the sixth plate member 320, the seventh plate member 210, the eighth plate member 220, and the ninth plate member 230 are different parts of the same thin plate. The first connection surface 231 and the second connection surface 232 are respectively two end faces of the same thin plate, and the two end faces are welded and connected by a weld 233.

[0105] In some embodiments, the connecting beam is formed by rolling the same thin plate. The two ends of the thin plate are respectively the first connection surface 231 and the second connection surface 232, and the first connection surface 231 and the second connection surface 232 are welded and connected.

[0106] In the above embodiments, the same thin plate can be welded and enclosed and rolled to form a closed connecting beam, which simplifies the manufacture of the connecting beam.

[0107] When the connecting beam in the above embodiments is disposed inside the battery pack, the mechanical properties of the battery pack can be improved, thereby enhancing the performance of the battery pack.

[0108] The above has introduced in detail a connecting beam provided by the embodiments of the present application. Specific examples are used in the present application to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A connecting beam, characterized in that: include: a first support portion; an isolation portion, the isolation portion being connected to one side of the first supporting portion along a first direction; a second supporting portion, the second supporting portion being connected to one side of the first supporting portion along a second direction; A reinforcing portion is disposed between the first supporting portion and the second supporting portion along the second direction and connects the first supporting portion and the second supporting portion respectively.

2. The connecting beam according to claim 1, characterized in that: The reinforcement part comprises: a first plate, the first plate being disposed between the first supporting portion and the second supporting portion along the second direction and connecting the first supporting portion and the second supporting portion respectively; a second plate member, the second plate member is disposed between the first supporting portion and the second supporting portion along the second direction and respectively connects the first supporting portion and the second supporting portion; the second plate member is disposed on one side of the first plate member along the first direction; At least one of the first plate member and the second plate member protrudes toward the other one along the first direction and is connected to the other one.

3. The connecting beam according to claim 2, characterized in that: The first plate comprises a first stretching sub-portion, a first connecting sub-portion, and a second stretching sub-portion, wherein the first connecting sub-portion is disposed between the first stretching sub-portion and the second stretching sub-portion along the second direction and connects the first stretching sub-portion and the second stretching sub-portion respectively; the first stretching sub-portion is connected to the first supporting portion; and the second stretching sub-portion is connected to the second supporting portion; The second plate member includes a third stretching sub-portion, a second connecting sub-portion and a fourth stretching sub-portion, the second connecting sub-portion is arranged between the third stretching sub-portion and the fourth stretching sub-portion along the second direction, and respectively connects the third stretching sub-portion and the fourth stretching sub-portion; the second connecting sub-portion is connected to one side of the first connecting sub-portion along the first direction; the third stretching sub-portion and the first stretching sub-portion are spaced apart along the first direction, and are connected to the first supporting portion; the fourth stretching sub-portion is spaced apart from the second stretching sub-portion along the first direction, and is connected to the second supporting portion.

4. The connecting beam according to claim 2, characterized in that: The first supporting portion includes a third plate and a fourth plate spaced apart along the first direction, the isolating portion is connected to a side of the third plate away from the fourth plate along the first direction, the third plate is connected to the first plate, and the fourth plate is connected to the second plate.

5. The connecting beam according to claim 4, characterized in that: The second supporting portion comprises: a fifth plate member, the fifth plate member being connected to a side of the first plate member away from the first supporting portion along the second direction; a sixth plate, the sixth plate and the fifth plate are spaced apart along the first direction, and the sixth plate is connected to a side of the second plate away from the first supporting portion along the second direction; A first bending portion, wherein the first bending portion is connected to an end of the fifth plate away from the first plate along the second direction, and an end of the sixth plate away from the second plate along the second direction is connected to an end of the first bending portion away from the fifth plate.

6. The connecting beam according to claim 5, characterized in that: The first bending portion has a maximum bending radius R1; along the first direction, there is a maximum distance a between the fifth plate and the sixth plate, satisfying: a≥2R1 and 3mm≤R1≤5mm; Along the second direction, the isolation portion has a maximum dimension b, which satisfies: 10 mm ≤ b ≤ 19 mm; Along the second direction, the first supporting portion has a maximum dimension c, which satisfies: 20 mm ≤ c ≤ 29 mm.

7. The connecting beam according to claim 5, characterized in that: The third plate has a third surface facing away from the fourth plate; the fifth plate has a fifth surface facing away from the sixth plate; the first plate protrudes toward the second plate along the first direction to form a first groove, the first plate has a first groove wall and a second groove wall for surrounding the first groove, the first groove wall is connected to the third surface and forms an angle α1 with the third surface, the second groove wall is connected to the fifth surface and forms an angle α3 with the fifth surface, satisfying: 100°≤α1≤160°, 100°≤α3≤160°; and / or, The fourth plate has a fourth surface facing away from the third plate; the sixth plate has a sixth surface facing away from the fifth plate; The second plate protrudes toward the first plate along the first direction and forms a second groove. The second plate has a third groove wall and a fourth groove wall for enclosing the second groove. The third groove wall is connected to the fourth surface and forms an angle α2 with the fourth surface. The fourth groove wall is connected to the sixth surface and forms an angle α4 with the sixth surface, satisfying: 100°≤α2≤160°, 100°≤α4≤160°.

8. The connecting beam according to claim 5, characterized in that: The reinforcing portion further includes a second bending portion, a third bending portion, a fourth bending portion and a fifth bending portion; the second bending portion is connected to the first plate, the third plate is connected to an end of the second bending portion away from the first plate, and the second bending portion has a maximum bending radius R2; The third bending portion is connected to one end of the first plate away from the second bending portion, the fifth plate is connected to one end of the third bending portion away from the first plate, and the third bending portion has a maximum radius R3; The fourth bending portion is connected to the second plate, the fourth plate is connected to an end of the fourth bending portion away from the second plate, and the fourth bending portion has a maximum bending radius R4; The fifth bending portion is connected to one end of the second plate away from the fourth bending portion, the sixth plate is connected to one end of the fourth bending portion away from the second plate, and the fifth bending portion has a maximum radius R5; Satisfy: 3mm≤R2≤5mm, 3mm≤R3≤5mm, 3mm≤R4≤5mm, 3mm≤R5≤5mm.

9. The connecting beam according to claim 1, characterized in that: The connecting beam includes at least two second supporting portions, at least two second supporting portions are arranged at intervals along the second direction, and the first supporting portion is arranged between two adjacent second supporting portions along the second direction and respectively connects two adjacent second supporting portions.

10. The connecting beam according to claim 1, characterized in that: The isolation portion comprises: a seventh plate member connected to the first supporting portion; an eighth plate member, the eighth plate member being connected to the first supporting portion, and the seventh plate member and the eighth plate member being spaced apart along the second direction; a ninth plate, the ninth plate being disposed between the seventh plate and the eighth plate along the second direction and connecting the seventh plate and the eighth plate respectively; The ninth plate has a first connecting surface and a second connecting surface, the first connecting surface faces the second connecting surface along the second direction, and the first connecting surface and the second connecting surface are connected by a weld.

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