CN220604852U - Profile structure and battery pack - Google Patents

Abstract

The utility model discloses a profile structure and a battery pack, which comprise a profile frame body, wherein the profile frame body comprises a first transverse beam, a second longitudinal beam and a middle beam which are welded integrally, cavities are formed in the first transverse beam, the second longitudinal beam and the middle beam, a first assembly platform is formed by extending the outer side of the first transverse beam, a second assembly platform is formed by extending the outer side of the second longitudinal beam, and the first assembly platform and/or the second assembly platform are plate-shaped. According to the utility model, the first assembly platform and/or the second assembly platform are/is designed into a plate shape to replace the original hollow profile structure, so that the volume and the weight of the first assembly platform and/or the second assembly platform are reduced, and the weight of the profile frame body is reduced.

Description

Profile structure and battery pack

Technical Field

The utility model relates to the technical field of battery packs, in particular to a section bar structure and a battery pack.

Background

The prior battery pack comprises a metal plate shell, an electric core module and a limiting beam, wherein a plurality of limiting beams are required to be fixed or welded in the metal plate shell through bolts during installation, a plurality of battery modules are fixed after being placed in the limiting beams, glue is filled after the battery modules are placed in the battery packs, and finally the battery cover body and the metal plate shell are locked to form the battery pack. The battery pack is complicated in step of installing the battery core module, and a plurality of limiting beams are required to be installed, so that the prior art is used for producing a profile module, the battery core module can be installed in advance instead of the limiting beams, and the installation complexity is reduced.

Referring to fig. 1-4, the profile module of the prior art includes a profile frame body 1 and a bottom plate 2, which are spot welded, so that the profile frame body 1 and the bottom plate 2 are tightly attached, and meanwhile, in order to connect the profile frame body 1 with a sheet metal shell, the first assembling platform 31 is provided, a cavity 12 is formed in the interior of the first assembling platform 31, and a plurality of connecting plates 121 are arranged in the cavity 12, so that the self strength is increased, the assembling stability is improved, and the weight of the profile frame body 1 is large due to the large occupied space of the first assembling platform 31, so that the structure of the profile frame body 1 needs to be optimized and improved.

Disclosure of Invention

In order to overcome at least one of the defects described in the prior art, the utility model provides a profile structure and a battery pack. Through designing first assembly platform to platy, lighten self weight and volume greatly, can hold more electric core, accord with the theory of battery package lightweight design.

The utility model adopts the technical proposal for solving the problems that:

the utility model provides a section bar structure, includes the section bar frame body, the section bar frame body includes integrative welded first transverse beam, second longitudinal beam and intermediate beam, first transverse beam, second longitudinal beam and intermediate beam self inside cavity formation cavity, the outside of first transverse beam extends and forms first assembly platform, the outside of second longitudinal beam extends and forms the second assembly platform, wherein, first assembly platform and/or second assembly platform are platy.

Through adopting above-mentioned scheme, through designing first assembly platform and/or second assembly platform for platy, replace original cavity section bar structure, reduced the volume and the weight of first assembly platform and/or second assembly platform to realize the lightweight of section bar frame body.

Further, the bottoms of the first transverse beam and the second longitudinal beam extend inwards to form a first welding plate, the middle beam comprises a first transverse middle beam and a second longitudinal middle beam, and the bottoms of the first transverse middle beam and the second longitudinal middle beam extend to two sides to form a second welding plate.

Through adopting above-mentioned scheme, through first welded plate and second welded plate of design, improve bottom plate and section bar frame body welded stability.

Further, the first welding plate and the second welding plate are welded with the bottom plate, and one side of the first welding plate and the second welding plate, which is welded, at least partially overlaps with the bottom plate.

Through adopting above-mentioned scheme, through improving the area that bottom plate and first welded plate, second welded plate overlap, improve welding stability, and when first welded plate and second welded plate do not overlap the welding with the bottom plate completely, can promote the area that the section bar frame body enclosed under the condition of not increasing weight to promote the quantity of electric core.

Further, at least one welding opening is formed in the first welding plate and the second welding plate, and a through hole is formed between the welding opening and the bottom plate.

By adopting the scheme, the whole area of the first welding plate and the second welding plate is reduced, so that the weight is reduced.

Further, the bottom plate is provided with a downward concave avoidance groove.

Through adopting above-mentioned scheme, dodge the groove through setting up, can do for the temperature acquisition circuit of electric core module and dodge the space.

The utility model provides a battery package, includes casing, lower casing, electric core module and section bar structure, the bottom welding bottom plate of section bar frame body forms the chamber that holds electric core module, section bar frame body assembles to in the casing down, it is fixed with lower casing lock to go up the casing.

Through adopting above-mentioned scheme, can be with the direct assembly of electric core module to the holding intracavity that section bar frame body and bottom plate enclose, improve the efficiency of electric core module installation greatly for production beat.

Further, the lower case includes: the front end plate, the back end plate, intermediate lamella and splice beam, the intermediate lamella includes at least one, the intermediate lamella is located between front end plate and the back end plate, splice beam will front end plate, intermediate lamella and back end plate splice in proper order forms the ship form.

Through adopting above-mentioned scheme, the casing adopts a plurality of parts concatenation to form down, can promote the self intensity of casing down through the splice roof beam to replace the structure of a plurality of crossbeams of integrative panel beating shell welding again, reduce the production degree of difficulty, improve production efficiency.

Further, the edge of the middle plate is provided with a module fixing support, the module fixing support is provided with a mounting table, and the mounting table is connected with the first assembly platform.

By adopting the scheme, the lower shell and the profile frame body can be fixed, and the assembly is completed.

Further, be provided with a plurality of protruding muscle on front end plate, rear end plate, the intermediate lamella, protruding muscle top surface all is located the coplanar, protruding muscle with section bar frame body bottom welded bottom plate butt.

Through adopting above-mentioned scheme, can improve the bearing of bottom plate, promote the assembly stability between lower casing and the section bar frame body simultaneously.

Further, a groove is formed in the convex rib, and the groove corresponds to the concave avoidance groove in the bottom plate.

By adopting the scheme, the stability of the butt joint of the bottom plate and the convex ribs is ensured.

In summary, the profile structure and the battery pack provided by the utility model have the following technical effects:

1. the first assembly platform and/or the second assembly platform of the profile frame body are/is designed to be plate-shaped, so that the weight of the profile frame body is greatly reduced, and the lightweight design of the profile frame is realized;

2. the assembly stability of the bottom plate and the profile frame body is improved through the design of the first welding plate and the second welding plate;

3. through the part with first welded plate and second welded plate and bottom plate welding, can promote the area that holds the chamber when not promoting the bottom plate area, section bar frame body self volume compression simultaneously can make the section bar frame body enclose and close hold the chamber and hold more electric core.

Drawings

FIG. 1 is a schematic perspective view of a prior art;

FIG. 2 is a schematic diagram of an exploded structure of the prior art;

FIG. 3 is a schematic cross-sectional view of a second longitudinal beam of the prior art;

FIG. 4 is a schematic cross-sectional view of a first transverse beam of the prior art;

fig. 5 is a schematic perspective view of embodiment 1 of the present utility model;

FIG. 6 is a schematic cross-sectional view of a second longitudinal beam according to embodiment 1 of the present utility model;

FIG. 7 is a schematic view of a second longitudinal center sill structure in accordance with embodiment 1 of the present utility model;

FIG. 8 is a schematic cross-sectional view of a first transverse beam according to embodiment 1 of the present utility model;

FIG. 9 is a schematic cross-sectional view of a first transverse center sill in accordance with an embodiment 1 of the present utility model;

fig. 10 is a schematic perspective view of embodiment 2 of the present utility model;

FIG. 11 is a schematic diagram of an explosion structure of embodiment 2 of the present utility model;

fig. 12 is a schematic view of the lower housing structure according to an embodiment of the utility model.

Wherein the reference numerals have the following meanings: 1. a profile frame body; 11. a receiving chamber; 12. a cavity; 121. a connecting plate; 2. a bottom plate; 3. a first transverse beam; 31. a first assembly platform; 4. a second longitudinal beam; 41. a second assembly platform; 5. a middle beam; 51. a first transverse middle beam; 511. slotting; 512. a limiting piece; 52. a second longitudinal center sill; 6. a first welding plate; 7. a second welding plate; 8. welding and perforating; 9. a through hole; 10. an avoidance groove; 20. a lower housing; 21. a front end plate; 22. a rear end plate; 23. an intermediate plate; 24. splicing beams; 25. a module fixing bracket; 251. a mounting platform; 26. convex ribs; 261. a groove.

Detailed Description

For a better understanding and implementation, the technical solutions of the embodiments of the present utility model will be clearly and completely described and discussed below in conjunction with the accompanying drawings, and it is apparent that what is described herein is only a part, but not all, of the examples of the present utility model, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

For the purpose of facilitating an understanding of the embodiments of the present utility model, reference will now be made to the drawings, by way of example, of specific embodiments, and the various embodiments should not be construed to limit the embodiments of the utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1-4, the prior art discloses a profile structure: including section bar frame body 1 and bottom plate 2, section bar frame body 1 is formed by integrative concatenation of multistage section bar, bottom plate 2 is fixed in section bar frame body 1 bottom to form that the top surface is opened, the central authorities can hold the chamber 11 that holds of electric mandrel group, section bar frame adopts steel or aluminium material, self cavity formation cavity 12, be provided with a plurality of parallel arrangement's connecting plate 121 in the cavity 12, can improve the self intensity of section bar. Specifically, the profile frame body 1 includes first horizontal roof beam 3, second vertical roof beam 4 and middle roof beam 5, middle roof beam 5 includes first horizontal middle roof beam 51 and second vertical middle roof beam 52 again, first horizontal roof beam 3 is longer than second vertical roof beam 4, first horizontal roof beam 3 is provided with two, second vertical roof beam 4 is provided with two, first horizontal roof beam 3 and second vertical roof beam 4 crisscross concatenation in proper order form rectangular frame, first horizontal middle roof beam 51 is located between two first horizontal roof beams 3 and is parallel with first horizontal roof beam 3, first horizontal middle roof beam 51 both ends are connected with two second vertical roof beams 4 respectively, second vertical middle roof beam 52 is located between two second vertical roof beams 4 and is parallel with second vertical roof beam 4 respectively, second vertical middle roof beam 52 both ends are connected with two first horizontal roof beams 3 respectively, through perpendicular cross connection's first horizontal middle roof beam 51 and second vertical middle roof beam 52 will the electric core accommodation space of profile frame body 1 is four at least to be four frame holding areas, consequently, can be four the bottom plate 2 each side to connect with the bottom plate respectively, and the stability is improved.

The outside edge of first horizontal roof beam 3 is provided with first assembly platform 31, the outside of second longitudinal beam 4 is provided with second assembly platform 41, first assembly platform 31 and second assembly platform 41 are provided with a plurality of lock and attach the hole for realize the lock of battery package and attach the effect, first assembly platform 31 and second assembly platform 41 self cavity design equally forms cavity 12, can reduce the self weight of first horizontal roof beam 3 and second longitudinal beam 4 when promoting the assembly stability.

Embodiment 1 of the present utility model is shown with reference to fig. 5 to 9, on the basis of the prior art, the volume and weight of the first transverse beam 3 are further reduced, the first assembling platform 31 is designed into a plate shape, the plate shape is perpendicular to the outer side wall of the first transverse beam 3, and the thickness of the plate shape is larger than the wall thickness of the cavity 12, so as to improve the stability of self locking, and simultaneously, the weight of the first assembling platform 31 and the second assembling platform 41 is reduced, so that the light-weight design of the profile frame body 1 is realized.

In some embodiments, in order to further reduce the weight of the second longitudinal beam 4, the structure of the second longitudinal beam 4 in the prior art is modified to: the cavity 12 structure of the first layer is changed into a vertical platy structure, and the second layer, the third layer and the fourth layer are all provided with two cavities 12 to form a second assembly platform 41, so that the strength of the first assembly platform can be improved, and the weight of the first assembly platform can be reduced; the connecting plate 121 in the fourth layer can be removed, so that the cavity 12 of the fourth layer is one, and the light-weight design is further realized only by taking the second layer and the third layer as main supporting effects.

In some embodiments, to further reduce the weight of the second longitudinal middle beam 52, the number of cavities per layer of the second longitudinal middle beam 52 is controlled to be two, so that the width of the second longitudinal middle beam 52 is reduced to make room for more battery cells, and the connection plates 121 in the second longitudinal middle beam 52 can be appropriately removed without affecting the strength of the second longitudinal middle beam 52 itself, which can further achieve light weight.

It should be noted that, the splicing manner of the profile frame body 1 itself and the splicing manner of the middle beam 5 are welding, which includes but is not limited to segment welding or full welding, and the heights of the first transverse beam 3, the second longitudinal beam 4, the first transverse middle beam 51 and the second longitudinal middle beam 52 are the same, so that in order to reduce the weight thereof, partial cutting can be performed at the upper end of any side beam, and in this embodiment, specific limitation is not performed, but in order to improve the stability of the profile connection, the section welded portion cannot be cut.

In this embodiment 1, the first welding plate 6 is provided inward at the bottoms of the first transverse beam 3 and the second longitudinal beam 4, the second welding plates 7 are provided at the bottoms of both sides of the first transverse intermediate beam 51 and the second longitudinal intermediate beam 52, the bottom plate 2 is abutted on the first welding plate 6 and the second welding plate 7, and then the first welding plate 6 and the second welding plate 7 are welded with the bottom plate, and the welding area with the bottom plate 2 can be increased by the first welding plate 6 and the second welding plate 7, thereby improving the welding stability.

Embodiment 2 of the present utility model is shown with reference to fig. 10 to 11, on the basis of the prior art, a first welding plate 6 is disposed inward at the bottoms of the first transverse beam 3 and the second longitudinal beam 4, second welding plates 7 are disposed at the bottoms of two sides of the first transverse middle beam 51 and the second longitudinal middle beam 52, at least one welding opening 8 is disposed on the first welding plate 6 and the second welding plate 7, and the welding opening 8 can divide the first welding plate 6 and the second welding plate 7 into a plurality of welding plates, so as to save consumables, reduce weight, realize lightweight design, and the size of each welding opening 8 can be the same or different.

The bottom plate is welded with part of the first welding plate 6 and the second welding plate 7, so that a through hole 9 is formed between the welding opening 8 and the bottom plate 2, and the space for accommodating the battery cells inside the profile frame body 1 can be enlarged, and more battery cells can be accommodated while the area of the bottom plate is not increased.

In some embodiments, referring to fig. 5, 10 and 11, the bottom plate 2 is further provided with an avoidance groove 10, so that a light design can be similarly realized, the avoidance groove 10 is a punching groove, when the weight of the bottom plate 2 is reduced, a avoidance space can be conveniently formed for the temperature sensing probe at the bottom of the bottom plate 2, and meanwhile, a space can be reserved for an FPC line of the temperature sensing probe, and the structure of the avoidance groove 10 includes three structures including but not limited to a linear shape, an L shape or a rectangle.

In some embodiments, referring to fig. 11, a slot 511 is further formed in the first transverse middle beam 51, a limiting member 512 is installed in the slot 511, the limiting member 512 is used for limiting the cell module to avoid horizontal movement of the cell module, the limiting member 512 is provided with a screw hole, and the limiting member 512 can be fixed in the slot 511 on the first transverse middle beam 51 through a screw.

The utility model also relates to a battery pack, referring to fig. 11, comprising an upper shell, a lower shell 20, a battery cell module and a profile structure, wherein a bottom plate 2 is welded at the bottom of the profile frame body 1 to form a containing cavity 11 for containing the battery cell module, the profile frame body 1 is assembled into the lower shell 20, the upper shell and the lower shell 20 are buckled and fixed, the battery cell module can be directly assembled into the containing cavity 11 enclosed by the profile frame body 1 and the bottom plate 2, the installation efficiency of the battery cell module is greatly improved, and the production beat is accelerated.

The lower case 20 includes: front end plate 21, back end plate 22, intermediate lamella 23 and splice beam 24, intermediate lamella 23 includes at least one, intermediate lamella 23 is located between front end plate 21 and the back end plate 22, splice beam 24 will front end plate 21, intermediate lamella 23 and back end plate 22 splice in proper order and form the ship form, lower casing 20 adopts a plurality of parts to splice and forms, can promote lower casing 20's self intensity through splice beam 24 to replace the structure of a plurality of crossbeams of integrative panel beating shell rewelding, reduce the production degree of difficulty, improve production efficiency.

The spliced beams 24 are in a shape like a Chinese character 'ji', the convex parts are used for supporting the beams, and the bottoms of the spliced beams 24 are respectively spliced with the front end plate 21 and the middle plate 23, the middle plate 23 and the rear end plate 22 or the middle plate 23 and the middle plate 23, and serve as connecting pieces to improve welding stability.

The edge of intermediate lamella 23 is provided with module fixed bolster 25, the both ends of module fixed bolster 25 pass through spot welding and the edge welding of intermediate lamella 23, the central authorities of module fixed bolster 25 have the mount pad parallel with the bottom surface, the mount pad is connected with first assembly platform 31, can fix lower casing 20 and section bar frame body 1, accomplishes the assembly, in order to further promote the stability of mount pad, can set up the strengthening rib between mount pad and the module fixed bolster 25.

The front end plate 21, the rear end plate 22 and the middle plate 23 are provided with a plurality of ribs 26, the top surfaces of the ribs 26 are all positioned on the same plane, and the ribs are propped against the bottom plate 2 welded at the bottom of the profile frame body 1, so that the bearing of the bottom plate 2 can be improved, and meanwhile, the assembly stability between the lower shell 20 and the profile frame body 1 is improved. The convex ribs 26 are provided with grooves 261, and the grooves 261 correspond to the concave avoidance grooves 10 on the bottom plate 2, so that the stability of the butt joint of the bottom plate 2 and the convex ribs 26 is guaranteed. After the profile frame body 1 is assembled with the lower shell 20, the bottoms of the second longitudinal beams 4 and the second longitudinal middle beams 5 can be clamped with the splicing beams 24, so that the assembly stability is improved. Therefore, the thickness of the lower shell 20 and the profile frame body 1 can be properly reduced, the number of the battery cells is increased, the weight of the battery pack is reduced, and the light-weight design is realized.

In summary, the profile structure and the battery pack provided by the utility model have the following technical effects:

1. the first assembling platform 31 and/or the second assembling platform 41 of the profile frame body 1 are/is designed to be plate-shaped, so that the weight of the profile frame body 1 is greatly reduced, and the light-weight design of the profile frame is realized;

2. the assembly stability of the bottom plate 2 and the profile frame body 1 is improved through the design of the first welding plate 6 and the second welding plate 7;

3. through the part with first welded plate 6 and second welded plate 7 with bottom plate 2 welding, can promote the area of holding chamber 11 when not promoting bottom plate 2 area, section bar frame body 1 self volume compression simultaneously can make section bar frame body 1 enclose hold more electric cores in holding chamber 11 that closes.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. The utility model provides a section bar structure, its characterized in that, includes section bar frame body (1), section bar frame body (1) are including integrative welded first transverse beam (3), second longitudinal beam (4) and intermediate beam (5), first transverse beam (3), second longitudinal beam (4) and intermediate beam (5) self inside cavity formation cavity (12), the outside of first transverse beam (3) extends and forms first assembly platform (31), the outside of second longitudinal beam (4) extends and forms second assembly platform (41), wherein, first assembly platform (31) and/or second assembly platform (41) are platy.

2. A profile structure according to claim 1, characterized in that the bottoms of the first transverse beam (3) and the second longitudinal beam (4) are extended inward with a first welding plate (6), the intermediate beam (5) comprises a first transverse intermediate beam (51) and a second longitudinal intermediate beam (52), and the bottoms of the first transverse intermediate beam (51) and the second longitudinal intermediate beam (52) are extended to both sides with a second welding plate (7).

3. A profile structure according to claim 2, characterized in that the first welding plate (6) and the second welding plate (7) are welded with the bottom plate (2), and that the side of the first welding plate (6) and the second welding plate (7) welded at least partly overlaps the bottom plate (2).

4. A profile structure according to claim 3, characterized in that the first welding plate (6) and the second welding plate (7) are provided with at least one welding opening, between which a through-hole (9) is formed with the bottom plate (2).

5. A profile structure according to claim 3, characterized in that the bottom plate (2) is provided with a downwardly concave relief groove (10).

6. The battery pack is characterized by comprising an upper shell, a lower shell (20), a battery cell module and the sectional material structure as claimed in any one of claims 1-5, wherein a bottom welding bottom plate (2) of the sectional material frame body (1) forms a containing cavity (11) for containing the battery cell module, the sectional material frame body (1) is assembled in the lower shell (20), and the upper shell is buckled and fixed with the lower shell (20).

7. A battery pack according to claim 6, wherein the lower case (20) includes: front end plate (21), back end plate (22), intermediate plate (23) and splice beam (24), intermediate plate (23) are including at least one, intermediate plate (23) are located between front end plate (21) and back end plate (22), splice beam (24) will front end plate (21), intermediate plate (23) and back end plate (22) splice in proper order and form the ship.

8. A battery pack according to claim 7, characterized in that the edge of the intermediate plate (23) is provided with a module fixing bracket (25), the module fixing bracket (25) having a mounting table, which is connected with the first mounting table (31).

9. The battery pack according to claim 7, wherein a plurality of ribs (26) are arranged on the front end plate (21), the rear end plate (22) and the middle plate (23), the top surfaces of the ribs (26) are located on the same plane, and the ribs (26) are abutted with the bottom plate (2) welded at the bottom of the profile frame body (1).

10. A battery pack according to claim 9, wherein the ribs (26) are provided with grooves (261), and the grooves (261) correspond to the recess avoidance grooves (10) on the bottom plate (2).