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CN-224217595-U - Battery package box boundary beam mosaic structure

CN224217595UCN 224217595 UCN224217595 UCN 224217595UCN-224217595-U

Abstract

The utility model provides a battery package box side beam splicing structure which comprises a first side beam and a second side beam, wherein the first side beam comprises at least three first transverse plates and two first longitudinal plates, the two first transverse plates and the two first longitudinal plates are enclosed to form a first frame body with a rectangular cross section, at least one other first transverse plate is arranged in the first frame body, the second side beam comprises at least three second transverse plates and two second longitudinal plates, the two second transverse plates and the two second longitudinal plates are enclosed to form a second frame body with a rectangular cross section, the other at least one second transverse plate is arranged in the second frame body, the first transverse plates and the second transverse plates are in lap joint, the end face of at least one first transverse plate in the first frame body is abutted against the inner side face of the second longitudinal plate to form a first joint, the end face of at least one second transverse plate in the second frame body is abutted against the inner side face of the first longitudinal plate to form a second joint, and the first joint and the second joint are connected through a welding process. The first transverse plate and the second transverse plate are overlapped in a staggered mode, the strength of the splicing position in the z direction is increased, the connecting strength is improved through the welding seams, and the situation that the structural strength of the battery pack is low and the air tightness is poor due to the fact that the welding seams crack and fail is avoided.

Inventors

  • XIE CHAOJIE

Assignees

  • 孝感楚能新能源创新科技有限公司

Dates

Publication Date
20260508
Application Date
20250414

Claims (10)

  1. 1. The utility model provides a battery package box boundary beam mosaic structure, its characterized in that includes first boundary beam (1) and second boundary beam (2), wherein: The first side beam (1) comprises at least three first transverse plates (11) and two first longitudinal plates (12), wherein the at least three first transverse plates (11) are arranged in parallel and at intervals, the direction of the interval is the extending direction of the first longitudinal plates (12), the two first transverse plates (11) and the two first longitudinal plates (12) enclose a first frame body (13) with a rectangular cross section, and the other at least one first transverse plate (11) is arranged in the first frame body (13); the second side beam (2) comprises at least three second transverse plates (21) and two second longitudinal plates (22), the at least three second transverse plates (21) are arranged in parallel and at intervals, the direction of the interval is the extending direction of the second longitudinal plates (22), the two second transverse plates (21) and the two second longitudinal plates (22) enclose a second frame body (23) with a rectangular cross section, and the other at least one second transverse plate (21) is arranged in the second frame body (23); The first transverse plate (11) is in lap joint with the second transverse plate (21), at least one end face of the first transverse plate (11) located in the first frame body (13) is abutted against the inner side face of the second longitudinal plate (22) to form a first joint, at least one end face of the second transverse plate (21) located in the second frame body (23) is abutted against the inner side face of the first longitudinal plate (12) to form a second joint, and the first joint and the second joint are connected through a welding process.
  2. 2. The battery pack case side beam splicing structure according to claim 1, wherein one of the first transverse plate (11) and the second transverse plate (21) is provided with a plug-in portion (100), and the other is provided with a plug-in groove (200), and the plug-in portion (100) is plug-in fitted with the plug-in groove (200).
  3. 3. The battery pack case side beam splicing structure according to claim 2, wherein the height of the insertion portion (100) and the insertion groove (200) is half the thickness of the first cross plate (11).
  4. 4. The battery pack case side beam splicing structure according to claim 3, wherein the insertion groove (200) is formed by cutting down a first rectangular groove (300) from the surface of a second transverse plate (21), the second transverse plates (21) at the top and the bottom are respectively provided with a 45-degree right-angle chamfer (600), the insertion part (100) is formed by cutting down a right-angle triangular groove (400) from the surface of a first transverse plate (11) at the top and the bottom, or the first transverse plate (11) in the first frame (13) is formed by cutting down a second rectangular groove (500) from the surface, the bevel edge corresponding side surface of the right-angle triangular groove (400) is attached to the end surface of the second transverse plate (21) at the top or the end surface of the second transverse plate (21) at the bottom, and the bottom surface of the second rectangular groove (500) is abutted to the end surface of the second transverse plate (21) in the second frame (23).
  5. 5. The battery pack case side beam splicing structure according to claim 4, wherein the insertion groove (200) of the top surface and the insertion groove (200) of the bottom surface, one of which extends downward from the top surface and the other of which extends upward from the bottom surface, the insertion groove (200) in the second frame (23) extends in the same direction as the insertion groove (200) of the top surface or the insertion groove (200) of the bottom surface.
  6. 6. The battery pack case side beam splicing structure according to claim 3, wherein the insertion groove (200) is formed by cutting a first rectangular groove (300) downwards from the surface of a first transverse plate (11), the first transverse plates (11) at the top and the bottom are respectively provided with a 45-degree right-angle chamfer (600), the insertion part (100) is formed by cutting a right-angle triangular groove (400) downwards from the surface of a second transverse plate (21) at the top and the bottom, or the second transverse plate (21) in the second frame (23) is formed by cutting a second rectangular groove (500) downwards from the surface, the bevel edge corresponding side surface of the right-angle triangular groove (400) is attached to the end surface of the second transverse plate (21) at the top or the end surface of the second transverse plate (21) at the bottom, and the bottom surface of the second rectangular groove (500) is abutted to the end surface of the first transverse plate (11) in the first frame (13).
  7. 7. The battery pack case side beam splicing structure according to claim 6, wherein the insertion groove (200) of the top surface and the insertion groove (200) of the bottom surface, one of which extends downward from the top surface and the other of which extends upward from the bottom surface, are formed in the same direction in which the insertion groove (200) of the first frame (13) extends as the insertion groove (200) of the top surface and the insertion groove (200) of the bottom surface.
  8. 8. The battery pack case side beam splicing structure according to claim 5 or 7, wherein there are two insertion grooves (200) located in the first frame (13) or the second frame (23), two insertion grooves (200), one insertion groove (200) extends in the same direction as the insertion groove (200) on the top surface, and the other insertion groove (200) extends in the same direction as the insertion groove (200) on the bottom surface.
  9. 9. The battery pack case side beam splicing structure according to claim 1, wherein the number of the first transverse plates (11) and the number of the second transverse plates (21) are the same, the number of the first transverse plates (11) is n, and the sum of the number of welding seams corresponding to the first joint and the second joint is 2× (n-2).
  10. 10. The battery pack case side rail splicing structure according to any one of claims 1 to 7, wherein the first side rail (1) and the second side rail (2) form a third joint at an outer ring, and the third joint is connected by a welding process.

Description

Battery package box boundary beam mosaic structure Technical Field The utility model relates to the technical field of batteries, in particular to a battery pack box side beam splicing structure. Background Along with the increasingly severe mechanical working conditions of the battery pack at present, many vehicle enterprises propose national standard requirements that the vibration of the battery pack is more than 2-3 times, and particularly, the vibration in the z direction is most difficult to pass on the random vibration in the x, y and z directions. In the prior art, a box body of an aluminum extrusion frame is welded with two extrusion beams by adopting a full-welding process of a welding surface at a side beam splicing position. However, the random vibration in the z direction is not improved in strength, and the situation that the welding seam is cracked and failed at the position under severe working conditions still exists, so that the problems of lower structural strength and poor air tightness of the battery pack are finally caused. Disclosure of utility model In view of the above, the utility model provides a battery pack box side beam splicing structure, which solves the technical problems that the random vibration in the z direction is not enhanced in strength, the situation that the welding seam is cracked and failed under severe working conditions still exists, and the structural strength of the battery pack is lower and the air tightness is poor in the prior art. The technical scheme of the utility model is realized as follows: The utility model provides a battery pack box side beam splicing structure, which comprises a first side beam and a second side beam, wherein: The first side beam comprises at least three first transverse plates and two first longitudinal plates, wherein the at least three first transverse plates are arranged in parallel at intervals, the direction of the interval is the extending direction of the first longitudinal plates, the two first transverse plates and the two first longitudinal plates enclose a first frame body with a rectangular cross section, and the other at least one first transverse plate is arranged in the first frame body; The second side beam comprises at least three second transverse plates and two second longitudinal plates, wherein the at least three second transverse plates are arranged in parallel at intervals, the direction of the interval is the extending direction of the second longitudinal plates, the two second transverse plates and the two second longitudinal plates enclose a second frame body with a rectangular cross section, and the other at least one second transverse plate is arranged in the second frame body; The first transverse plate is in lap joint with the second transverse plate, the end face of at least one first transverse plate in the first frame body is abutted against the inner side face of the second longitudinal plate to form a first joint, the end face of at least one second transverse plate in the second frame body is abutted against the inner side face of the first longitudinal plate to form a second joint, and the first joint and the second joint are connected through a welding process. On the basis of the above technical scheme, preferably, the first transverse plate and the second transverse plate are provided with a plug-in portion, and the other transverse plate is provided with a plug-in groove, and the plug-in portion is in plug-in fit with the plug-in groove. On the basis of the technical scheme, preferably, the heights of the inserting part and the inserting groove are half of the thickness of the first transverse plate. On the basis of the technical scheme, preferably, the inserting groove is formed by cutting a first rectangular groove downwards from the surface by a second transverse plate, the second transverse plates at the top and the bottom are respectively provided with a right-angle chamfer angle of 45 degrees, the inserting part is formed by cutting a right-angle triangular groove of 45 degrees downwards from the surface by the first transverse plate at the top and the bottom, or the first transverse plate in the first frame body is obtained by cutting a second rectangular groove downwards from the surface, the hypotenuse corresponding side surface of the right-angle triangular groove is attached to the end surface of the second transverse plate at the top or the end surface of the second transverse plate at the bottom, and the bottom surface of the second rectangular groove is abutted to the end surface of the second transverse plate in the second frame body. On the basis of the technical scheme, preferably, the inserting grooves of the top surface and the inserting grooves of the bottom surface extend downwards from the top surface, and extend upwards from the bottom surface, and the inserting grooves in the second frame body and the inserting grooves of the top surface or the inserting grooves of