Hoisting type battery pack box body

Abstract

The utility model provides a hoisting type battery pack box body, which comprises a lower box body, cross beams, longitudinal beams and side beams, the cross beams are arranged in parallel with the width direction of the lower box body, the longitudinal beams are arranged in parallel with the length direction of the lower box body, the longitudinal beams and the cross beams are fixedly arranged at the outer bottom of the lower box body in a mutually staggered manner, and the side beams are arranged in parallel with the longitudinal beams. The side beams are arranged on the outer side wall of the lower box body, fixing plates are arranged at the two ends of the cross beam, the fixing plates are fixedly connected with the side beams in an attached mode, and lifting lug structures are fixedly arranged on the fixing plates. The beam structure is arranged outside the lower box body, the lifting lugs are installed on the two structures, stress of the whole package is dispersed to the beam structure during lifting, and the risk of failure of the lifting lugs can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and particularly relates to a hoisting type battery pack box body. Background Art

[0002] With the increase of the energy density of the battery pack, the weight of the battery pack also increases, and hoisting equipment is often used to transfer the battery pack during the production process. In the prior art, most of the lifting lugs are directly or indirectly welded on the side wall of the battery pack. However, during hoisting, the force is concentrated at the lifting lug or the welding joint between the lifting lug and the box body, which easily causes problems such as weld failure or plate tearing, and further leads to the cracking of the whole structure of the battery pack and the failure of the structural strength, resulting in the scrapping of the battery pack. Content of the Utility Model

[0003] The purpose of the utility model is to provide a hoisting type battery pack box body for the deficiencies of the above-mentioned prior art. A beam structure is arranged outside the lower box body, and the lifting lugs are installed on the two structures. During hoisting, the force of the whole package is dispersed to the beam structure, which can effectively reduce the risk of lifting lug failure.

[0004] The utility model provides a hoisting type battery pack box body, which includes a lower box body, a cross beam, a longitudinal beam and a side beam. The cross beam is arranged parallel to the width direction of the lower box body, the longitudinal beam is arranged parallel to the length direction of the lower box body, the longitudinal beam and the cross beam are fixedly arranged on the outer bottom of the lower box body in an intersecting manner, the side beam is arranged on the outer side wall of the lower box body, fixing plates are arranged at both ends of the cross beam, the fixing plates are fixedly connected with the side beam in a fitting manner, and a lifting lug structure is fixedly arranged on the fixing plates.

[0005] A preferred technical solution of the utility model: The cross beam includes a first main body and a first connecting plate. The first connecting plate is arranged on both sides of the first main body and extends along the length direction of the first main body. The first connecting plate is higher than the first main body, and the first connecting plate is fixedly connected to the bottom surface of the lower box body.

[0006] A preferred technical solution of the utility model: The longitudinal beam includes a second main body and a second connecting plate. The second connecting plate is arranged on both sides of the second main body and extends along the length direction of the second main body. The second connecting plate is higher than the second main body, and the second connecting plate is fixedly connected to the bottom surface of the lower box body.

[0007] A preferred technical solution of the utility model: A plurality of notches are arranged on the longitudinal beam, the cross beam is arranged in the notches, and the first main body is in contact with the second main body, and the cross beam and the longitudinal beam are perpendicular to each other.

[0008] A preferred technical solution of the utility model: A plurality of the cross beams are evenly arranged at intervals along the length direction of the longitudinal beam.

[0009] A better technical solution of the utility model: the side beam includes a third main body and a third connecting plate, the third connecting plate is arranged on both sides of the third main body and extends along the length direction of the third main body, the third connecting plate is higher than the third main body, the third connecting plate is fixedly connected to the outer side wall of the lower box body, and the fixing plate is connected to the third main body.

[0010] A better technical solution of the utility model: connecting end plates are vertically arranged at both ends of the third main body, and the connecting end plates are connected to the other outer side wall of the lower box body.

[0011] A better technical solution of the utility model: the lifting ear structure includes a lifting ear body and reinforcing ribs, the lifting ear body is fixedly arranged in the middle of the fixing plate, and the reinforcing ribs are arranged on both sides of the lifting ear body to fixedly connect the lifting ear body and the fixing plate.

[0012] A better technical solution of the utility model is as follows: a boss protruding outward is arranged at the bottom of the lower box body, and the boss is arranged in a grid formed by the intersection of the cross beam and the longitudinal beam.

[0013] The utility model has the following beneficial effects:

[0014] 1. The cross beams and longitudinal beams are staggered and connected to form a grid structure on the outside of the lower box of the battery pack. The side beams are connected to the cross beams and are arranged on the outer wall of the lower box. The cross beams, longitudinal beams and side beams surround the outer side of the lower box to enhance the structural strength of the lower box.

[0015] 2. The lifting lug is fixedly connected to the connecting plate at the end of the beam. During hoisting, the force of the whole package is dispersed to the lifting lug, beam, longitudinal beam and side beam. The force at the lifting lug is reduced, and the risk of failure is reduced;

[0016] 3. A boss is provided on the bottom of the lower box body, and the boss forms a groove on the inner bottom surface of the lower box body, thereby reducing the bottom surface area of ​​the lower box body and improving the flatness of the bottom surface of the lower box body, so as to facilitate more stable gluing of the battery cell to the bottom surface of the lower box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the utility model and are used together with the description to explain the principles of the utility model. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the utility model, rather than all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of an embodiment of the utility model.

[0019] Figure 2Schematic diagram of the connection between the cross beam, longitudinal beam and side beam in the embodiment of the present utility model.

[0020] Figure 3 Schematic diagram of the lug structure in the embodiment of the present utility model.

[0021] In the figure: 10, cross beam; 101, structural hole; 11, first main body; 12, first connecting plate; 13, fixing plate; 20, longitudinal beam; 21, second main body; 22, second connecting plate; 23, notch; 30, side beam; 31, third main body; 32, third connecting plate; 33, connecting end plate; 40, lug structure; 41, lug body; 411, mounting plate; 42, reinforcing rib; 421, reinforcing plate; 422, overlapping plate; 50, lower box body; 51, boss. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other arbitrarily.

[0023] Please refer to Figures 1 to 3 A hoisting type battery pack box body includes a lower box body 50, a cross beam 10, a longitudinal beam 20, a side beam 30 and a lug structure 40. The cross beam 10 is arranged parallel to the width direction of the lower box body 50, the longitudinal beam 20 is arranged parallel to the length direction of the lower box body 50, the cross beam 10 and the longitudinal beam 20 are alternately and fixedly arranged at the outer bottom of the lower box body 50, the side beam 30 is fixedly arranged on the outer side wall of the lower box body 50, fixing plates 13 are arranged at both ends of the cross beam 10, and the fixing plates 13 are fixedly connected to the side beam 30. The lug structure 40 is fixedly arranged on the fixing plates 13. During hoisting, the force of the whole package is dispersed to the cross beam 10, side beam 30, longitudinal beam 20 and lugs, improving the structural strength of the whole package and reducing the risk of failure of the whole package.

[0024] The cross beam 10 includes a first main body 11 and a first connecting plate 12. The first connecting plate 12 extends along the length direction of the first main body 11 on both sides of the first main body 11. The first main body 11 is a straight plate, and the cross section of the first connecting plate 12 is L-shaped. One side wall thereof is connected to the first main body 11 and is perpendicular to the first main body 11, and the other side wall is parallel to the first main body 11 and is located above the first main body 11. The two first connecting plates 12 are symmetrically arranged so that the cross section of the cross beam 10 is in a shape of a capital "J"; the side of the first connecting plate 12 parallel to the first main body 11 is welded and fixed to the outer bottom of the lower box body 50.

[0025] The longitudinal beam 20 is similar in structure to the cross beam 10, and includes a second main body 21 and second connecting plates 22. The second connecting plates 22 are arranged on both sides of the second main body 21 along the length direction of the first main body 11. The second main body 21 is a straight plate, and the cross section of the second connecting plate 22 is L-shaped. One side wall thereof is connected to the second main body 21 and is perpendicular to the second main body 21, and the other side wall is parallel to the second main body 21 and is located above the second main body 21. The two second connecting plates 22 are symmetrically arranged. The cross section of the longitudinal beam 20 is in a shape of a capital letter "ji", and the side of the second connecting plate 22 parallel to the second main body 21 is welded and fixed to the outer bottom of the lower box body 50.

[0026] To facilitate the connection between the cross beam 10 and the longitudinal beam 20, a plurality of notches 23 are provided on the longitudinal beam 20. The notches 23 extend from the top of the second connecting plate 22 towards the second main body 21. The notches 23 on the two second connecting plates 22 are arranged opposite to each other. When the cross beam 10 is arranged in the notches 23, the cross beam 10 is perpendicular to the longitudinal beam 20; the notches 23 penetrate through the second connecting plates 22 on both sides of the second main body 21, and the width of the notches 23 is greater than or equal to the width of the cross beam 10, facilitating the arrangement of the cross beam 10 in the notches 23; the depth of the notches 23 is the same as the height of the second connecting plate 22, so that when the cross beam 10 is located in the notches 23, the first main body 11 is attached to the second main body 21, facilitating the positioning and connection of the cross beam 10 and the longitudinal beam 20. The depth of the notches 23 should meet the requirement that when the cross beam 10 is located in the notches 23 and the first main body 11 is attached to the second main body 21, one side wall of the first connecting plate 12 for connecting the lower box body 50 and one side wall of the second connecting plate 22 for connecting the lower box body 50 are in the same plane, and both the first connecting plate 12 and the second connecting plate 22 can contact the lower box body 50. The cross beam 10 and the longitudinal beam 20 are both welded and fixed to the lower box body 50.

[0027] A plurality of cross beams 10 are arranged at uniform intervals along the length direction of the longitudinal beam 20. The cross beams 10 and the longitudinal beam 20 are arranged in a staggered manner, covering the outside of the lower box body 50 to form a grid-like structure, so as to improve the structural strength of the lower box body 50.

[0028] The side beam 30 is similar in structure to the cross beam 10, and includes a third main body 31 and third connecting plates 32. The third connecting plates 32 are arranged on both sides of the third main body 31 along the length direction of the third main body 31. The third main body 31 is a straight plate, and the cross section of the third connecting plate 32 is L-shaped. One side wall thereof is connected to the third main body 31 and is perpendicular to the third main body 31, and the other side wall is parallel to the third main body 31 and is located above the third main body 31. The two third connecting plates 32 are symmetrically arranged. The cross section of the side beam 30 is in a shape of a capital letter "ji", and the side of the third connecting plate 32 parallel to the third main body 31 is welded and fixed to the outer wall of one side of the lower box body 50.

[0029] Both ends of the third main body 31 are provided with connecting end plates 33 which are perpendicular to the third main body 31. The distance between the two connecting end plates 33 is the same as the length of the lower box body 50. The side beams 30 can be quickly positioned through the two connecting end plates 33, which is convenient for fixedly connecting the side beams 30 and the lower box body 50. Specifically, the lower box body 50 is inserted between the two connecting end plates 33, and the third connecting plate 32 is made to be in contact with the outer side wall of the lower box body 50, then the side beams 30 and the lower box body 50 can be positioned. Subsequently, the third connecting plate 32 is welded to the lower box body 50, and the connecting end plates 33 are welded to the lower box body 50 to fix the side beams 30 and the lower box body 50. In this application, the side beams 30 are arranged on the two side walls in the length direction of the lower box body 50.

[0030] Both ends of the cross beam 10 are provided with fixing plates 13 which are formed by bending upwards from both ends of the first main body 11. The fixing plates 13 are perpendicular to the first main body 11. After the cross beam 10 is installed at the bottom of the lower box body 50, the two fixing plates 13 are respectively outside the two side beams 30, and the fixing plates 13 are welded and fixed to the side beams 30.

[0031] Please refer to Figure 3 , the lifting lug structure 40 includes a lifting lug body 41 and a reinforcing rib 42. The cross section of the lifting lug body 41 is in an inverted U shape, and its two side edges are perpendicular to the top surface, so as to facilitate connecting the reinforcing rib 42; an installation plate 411 is provided at the end of the lifting lug body 41, and the installation plate 411 is perpendicular to the lifting lug body 41. The lifting lug body 41 is welded and fixed to the middle of the fixing plate 13 through the installation plate 411. In this application, the lifting lug structure 40 is formed by bending sheet metal, and the processing is simple.

[0032] The reinforcing rib 42 includes a reinforcing plate 421 in a right triangle shape. The two reinforcing plates 421 are arranged relatively parallel, and a lapping plate 422 is arranged between the two reinforcing plates 421. The lapping plate 422 connects the hypotenuses of the two reinforcing plates 421. The reinforcing rib 42 is arranged on both sides of the lifting lug body 41, and the two right sides of the reinforcing plate 421 are respectively welded to connect the side edge of the lifting lug body 41 and the fixing plate 13 to enhance the connection strength between the lifting lug body 41 and the fixing plate 13.

[0033] In this application, the cross beam 10, the longitudinal beam 20, and the side beam 30 are all integrally formed by bending sheet metal. Structure holes 101 are opened on the first main body 11, the second main body 21, and the third main body 31. Taking the first main body 11 as an example, a plurality of structure holes 101 are arranged at equal intervals along the length direction of the first main body 11 to reduce the overall weight of the battery pack.

[0034] Considering that the battery pack has a large volume, if the bottom surface of the lower box body 50 is a whole surface, the flatness of the bottom surface is relatively low. Therefore, in this application, a convex platform 51 is provided on the bottom surface of the lower box body 50. The convex platform 51 protrudes outside the lower box body 50 and is formed by stamping, so as to divide the bottom surface of the lower box body 50 into several small surfaces, thereby improving the flatness of the ground surface and facilitating the adhesive setting of the battery cells at the bottom of the lower box body 50. Further, to cooperate with the beam 10 and the longitudinal beam 20 structures at the bottom of the lower box body 50, the position of the convex platform 51 corresponds to the grid-like structure formed by the connection of the beam 10 and the longitudinal beam 20, and the convex platform 51 is located inside the grid.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, 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 make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hanging type battery pack box, characterized in that: The utility model comprises a lower box body (50), a cross beam (10), a longitudinal beam (20) and a side beam (30), wherein the cross beam (10) is arranged parallel to the width direction of the lower box body (50), the longitudinal beam (20) is arranged parallel to the length direction of the lower box body (50), the longitudinal beam (20) and the cross beam (10) are staggered and fixedly arranged on the outer bottom of the lower box body (50), the side beam (30) is arranged on the outer side wall of the lower box body (50), and fixing plates (13) are arranged at both ends of the cross beam (10), the fixing plates (13) are fitted and fixedly connected to the side beams (30), and the fixing plates (13) are fixedly arranged with hanging ear structures (40).

2. The hanging type battery pack box according to claim 1, characterized in that: The crossbeam (10) comprises a first main body (11) and a first connecting plate (12), wherein the first connecting plate (12) is arranged on both sides of the first main body (11) and extends along the length direction of the first main body (11), the first connecting plate (12) is higher than the first main body (11), and the first connecting plate (12) is fixedly connected to the bottom surface of the lower box body (50).

3. The hanging type battery pack box according to claim 2, characterized in that: The longitudinal beam (20) comprises a second main body (21) and a second connecting plate (22), wherein the second connecting plate (22) is arranged on both sides of the second main body (21) and extends along the length direction of the second main body (21), the second connecting plate (22) is higher than the second main body (21), and the second connecting plate (22) is fixedly connected to the bottom surface of the lower box body (50).

4. The hanging type battery pack box according to claim 3, characterized in that: A plurality of notches (23) are provided on the longitudinal beam (20), the cross beam (10) is arranged in the notches (23), the first main body (11) and the second main body (21) are in contact with each other, and the cross beam (10) and the longitudinal beam (20) are perpendicular to each other.

5. The hanging type battery pack box according to claim 4, characterized in that: A plurality of the cross beams (10) are evenly spaced along the length direction of the longitudinal beam (20).

6. The hanging type battery pack box according to claim 1, characterized in that: The side beam (30) comprises a third main body (31) and a third connecting plate (32), wherein the third connecting plate (32) is arranged on both sides of the third main body (31) and extends along the length direction of the third main body (31), the third connecting plate (32) is higher than the third main body (31), the third connecting plate (32) is fixedly connected to the outer side wall of the lower box body (50), and the fixing plate (13) is connected to the third main body (31).

7. The hanging type battery pack box according to claim 6, characterized in that: Connecting end plates (33) are vertically arranged at both ends of the third main body (31), and the connecting end plates (33) are connected to the other outer side wall of the lower box body (50).

8. The hanging type battery pack box according to claim 1, characterized in that: The lifting ear structure (40) comprises a lifting ear body (41) and reinforcing ribs (42); the lifting ear body (41) is fixedly arranged in the middle of the fixing plate (13); and the reinforcing ribs (42) are arranged on both sides of the lifting ear body (41) to fixedly connect the lifting ear body (41) and the fixing plate (13).

9. The hanging type battery pack box according to claim 1, characterized in that: The bottom of the lower box body (50) is provided with a boss (51) protruding outwards, and the boss (51) is arranged in a grid formed by the intersection of the cross beam (10) and the longitudinal beam (20).

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