CN220456579U

CN220456579U - Battery pack structure

Info

Publication number: CN220456579U
Application number: CN202321957038.9U
Authority: CN
Inventors: 殷鹏; 许�鹏; 陈英旗; 曹楷; 曹辉
Original assignee: Shanghai Ruipu Energy Co Ltd
Current assignee: Shanghai Ruipu Energy Co Ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2024-02-06
Anticipated expiration: 2033-07-24

Abstract

The present utility model relates to a battery pack structure, which includes: a frame, which is a containing cavity with an opening at one end, a plurality of cross beams are fixedly arranged in the frame and are distributed at intervals along the second direction, dividing the interior of the frame into a plurality of mounting areas, the plurality of mounting areas being spaced apart along the second direction; a plurality of positioning frames, each positioning frame is fixedly connected with the frame, a plurality of positioning frames are arranged in each mounting area, each positioning frame is provided with a containing gap for containing the battery cell, the positioning frame is internally provided with a first structural adhesive layer, and the first structural adhesive layer is connected with two first edges which are arranged oppositely and positioned on the bottom surface of the battery cell so as to fix the battery cell in the positioning frame. The utility model connects two first edges which are oppositely arranged on the bottom surface of the battery cell with the positioning frame through the first structural adhesive layer, and fixedly connecting the positioning frame and the frame. Therefore, after the battery cells in the frame are damaged, the damaged battery cells can be detached and replaced.

Description

Battery pack structure

Technical Field

The utility model relates to the field of power batteries, in particular to a battery pack structure.

Background

With the rapid development of new energy industry, the scheme of the battery pack becomes the mainstream solution of the whole vehicle. At present, the design of the battery pack is more and more extreme, and the volume utilization rate of the battery pack is higher and higher. Leading to the development and development of CTP (Cell to Pack) technology by many battery manufacturers.

In the existing CTP (Cell to Pack) technology, the battery cell is directly integrated into the battery pack frame, and a structural adhesive layer is arranged between two narrow surfaces of the battery cell and a cross beam in the battery pack frame, so that the battery cell is fixed in the frame of the battery pack. However, if a single cell in a subsequent battery pack is damaged, the whole narrow surface of the cell is fixed with the battery pack frame through the structural adhesive layer, so that the replacement of the single cell cannot be realized when the single cell is damaged.

Disclosure of Invention

The embodiment of the utility model provides a battery pack structure, which aims to solve the problem that a battery core in a battery pack cannot be replaced in the related art.

The embodiment of the utility model provides a battery pack structure, which comprises:

the frame is an accommodating cavity with an opening at one end, a plurality of cross beams are fixedly arranged in the frame, the cross beams are distributed at intervals along a second direction, the interior of the frame is divided into a plurality of mounting areas, and the mounting areas are distributed at intervals along the second direction;

the battery cell fixing device comprises a plurality of locating frames, wherein each locating frame is fixedly connected with a frame, a plurality of locating frames are arranged in each installation area, each locating frame is provided with a containing gap for containing a battery cell, a first structural adhesive layer is arranged in each locating frame, and the first structural adhesive layer is connected with two first edges which are oppositely arranged on the bottom surface of the battery cell and used for fixing the battery cell in the locating frame.

In some embodiments, the positioning frame comprises:

the frame body comprises a bottom plate and four side walls positioned above the bottom plate, and accommodating gaps for accommodating the battery cells are formed in the periphery of the bottom plate and the four side walls;

a plurality of partition boards, wherein the partition boards are distributed at intervals along the first direction and divide the accommodating gap into a plurality of accommodating spaces; an electric core and a first structural adhesive layer are arranged in each accommodating space, and two first edges which are oppositely arranged on the bottom surface of each electric core are fixed in each accommodating space through the first structural adhesive layer.

In some embodiments, a groove is provided on the bottom plate in each accommodation space, and the first structural adhesive layer is at least partially disposed in the groove.

In some embodiments, the two first edges are edges formed by intersecting the narrow faces and the bottom faces of the electric cores, and the narrow face of each electric core is arranged close to the cross beam.

In some embodiments, a pressing plate is fixed at the top of each beam, and the pressing plates are used for pressing the electric cores located at two sides of the beams into the corresponding positioning frames.

In some embodiments, a second structural adhesive layer is disposed between the cross beam and the positioning frames of two adjacent rows.

In some embodiments, the pressing plate comprises a first plate body, a second plate body and a third plate body which are sequentially connected, wherein the first plate body and the third plate body are connected through the second plate body; the first plate body and the third plate body are positioned on the same side of the thickness direction of the second plate body, and the first plate body and the third plate body are respectively arranged at preset included angles with the second plate body; the pressing plate also comprises two outward flanging; one of the two outward flanges is connected to one end of the first plate body, which is far away from the second plate body, the other one of the two outward flanges is connected to one end of the third plate body, which is far away from the second plate body, and the two outward flanges are used for compressing the battery cell in the positioning frame.

In some embodiments, the second plate body is provided with a plurality of first threaded holes, the top of the beam is provided with a plurality of second threaded holes, and the first threaded holes and the second threaded holes are connected with bolts in a threaded manner so as to fix the pressing plate on the top of the beam.

In some embodiments, a cushion is disposed between the cuff and the cell.

In some embodiments, two third structural adhesive layers are further disposed on each pressing plate; the third structural adhesive layer is arranged on the first plate body and/or an outward turned edge connected with the first plate body, and is also connected with a second edge of the battery cell positioned at one side of the cross beam, the second edge is positioned on the top surface of the battery cell, and the second edge is arranged close to the pressing plate; the other third structural adhesive layer is arranged on the third plate body and/or the outward turned edge connected with the third plate body, and is also connected with a third edge of the battery cell positioned on the other side of the cross beam, the third edge is positioned on the top surface of the battery cell, and the third edge is close to the pressing plate.

The technical scheme provided by the utility model has the beneficial effects that: through integrating the electric core in the locating frame, and two first edges of relative setting on the electric core bottom surface pass through first structural adhesive layer and locating frame connection, with locating frame and frame fixed connection again. Because only two edges of the battery core are connected with the positioning frame, the damaged battery core can be detached and replaced after the battery core in the frame is damaged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a battery pack structure according to an embodiment of the present utility model;

fig. 2 is a schematic perspective view of a positioning frame provided in an embodiment of the present utility model in a battery cell;

fig. 3 is a schematic perspective view of a positioning frame according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of fixing between two adjacent rows of positioning frames according to an embodiment of the present utility model;

FIG. 5 is a schematic perspective view of a platen according to an embodiment of the present utility model;

fig. 6 is a schematic perspective view of a beam according to an embodiment of the present utility model.

In the figure: 1. a frame; 11. a mounting area; 2. a positioning frame; 21. an accommodation space; 22. a frame; 23. a first through hole; 24. a partition plate; 25. a second through hole; 3. a first structural adhesive layer; 4. a battery cell; 5. a cross beam; 51. a second threaded hole; 6. a pressing plate; 61. a flanging; 62. a first threaded hole; 63. a bolt; 7. a second structural adhesive layer; 8. a cushion pad; 9. and a third structural adhesive layer.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order to facilitate understanding of the technical solution of the present utility model, in the following embodiments, it should be noted that, in the drawings, the X-axis direction is set to the length direction of the frame 1 (i.e., the length direction of each row of the cells 4, i.e., the first direction), the Y-axis direction is set to the width direction of the frame 1 (i.e., the direction in which the rows of the cells 4 are spaced apart from each other, i.e., the second direction), and the Z-axis direction is set to the height direction of the frame 1 (i.e., the height direction of the cells 4, i.e., the third direction).

As shown in fig. 1, an embodiment of the present utility model provides a battery pack structure, which may include: the frame 1, the frame 1 is a containing cavity with an opening at one end, the inside of the frame 1 is fixedly provided with a plurality of cross beams 5, each cross beam 5 is arranged in an extending mode along a first direction, the cross beams 5 are distributed at intervals along a second direction so as to divide the inside of the frame 1 into a plurality of mounting areas 11, the mounting areas 11 are distributed at intervals along the second direction, and the length direction of each mounting area 11 is arranged in an extending mode along the first direction; as shown in fig. 2, a plurality of positioning frames 2, each positioning frame 2 is fixedly connected with the frame 1, a plurality of positioning frames 2 are all arranged in each installation area 11, each positioning frame 2 is provided with a containing gap for containing the electric core 4, a first structural adhesive layer 3 is arranged in each positioning frame 2, and the first structural adhesive layer 3 is connected with two first edges which are oppositely arranged and are positioned on the bottom surface of the electric core 4 so as to fix the electric core 4 in the positioning frame 2.

It should be noted that, in general, the battery cell 4 includes a top surface and a bottom surface which are disposed opposite to each other, and four side surfaces connected to the top surface or the bottom surface; the four side surfaces comprise two large surfaces which are oppositely arranged and two narrow surfaces which are mutually arranged. Among the four side surfaces, two side surfaces with larger areas are called large surfaces, and two side surfaces with smaller areas are called narrow surfaces; the utility model provides that the bottom surface of the cell 4 is arranged as a surface of the cell 4 facing away from the opening of the frame 1.

It should be noted that each cell 4 has 12 edges, four sides and a bottom intersect to form 4 edges, and a top intersects with four sides to form 4 edges; in the utility model, 4 edges formed by intersecting four side surfaces and a bottom surface are called edges on the bottom surface, and 4 edges formed by intersecting the top surface and four side surfaces are called edges on the top surface.

In the present utility model, "a plurality of" means two or more.

In the utility model, by integrating the battery cell 4 in the positioning frame 2, and two first edges oppositely arranged on the bottom surface of the battery cell 4 are connected with the positioning frame 2 through the first structural adhesive layer 3, and then the positioning frame 2 is fixedly connected with the frame 1. Because only two edges of the battery cell are connected with the positioning frame 2, after the battery cell 4 in the frame 1 is damaged, the damaged battery cell 4 can be detached and replaced.

In some embodiments, the two first edges are edges formed by intersecting the narrow surface and the bottom surface of the battery cell 4, and the narrow surface of each battery cell 4 is disposed near the beam 5.

In some embodiments, as shown in fig. 2 and 3, the positioning frame 2 may include: the frame body 22, the frame body 22 includes the bottom plate to and be located four lateral walls of bottom plate top, and bottom plate and four lateral walls enclose to establish and are formed with the accommodation space that is used for holding electric core 4, and location frame 2 still includes a plurality of baffles 24 that distribute along first direction interval, and a plurality of baffles 24 cut apart accommodation space into a plurality of accommodation spaces 21, have all placed electric core 4 and first structure glue film 3 in every accommodation space 21, and two first edges of relative setting on the bottom surface of every electric core 4 are all fixed in every accommodation space 21 through first structure glue film 3.

In some embodiments, a groove is provided on the bottom plate in each accommodation space 21, and the first structural adhesive layer 3 is at least partially disposed in the groove. By providing the base plate with a recess, the first structural adhesive layer 3 is at least partially located in the recess. On one hand, the occupation of the accommodating space 21 can be saved, and the space utilization rate of the accommodating space 21 is ensured; on the other hand, the stable placement of the battery cell 4 can be ensured, and the fixing strength of the first structural adhesive layer 3 is improved.

In some embodiments, the four side walls of the positioning frame 2, which are close to the large surface of the battery cell 4, are provided with first through holes 23; two side walls close to the narrow surface of the battery cell 4 are provided with second through holes 25.

The first through hole 23 and the second through hole 25 can reduce the weight of the positioning frame 2, thereby reducing the weight of the battery pack as a whole and improving the heat dissipation effect of the battery cell 4 of the frame 22.

The length direction of the mounting area 11 may extend along the length direction of the frame 1, and the arrangement directions of the plurality of mounting areas 11 may be distributed at intervals along the width direction of the frame 1; a plurality of positioning frames 2 are arranged in each row of installation areas 11, a plurality of containing spaces 21 of the positioning frames 2 can be arranged in an extending mode along the length direction of the frame 1, and two edges of the battery cell 4 can be fixed in the containing spaces 21 of the positioning frames 2 through the first structural adhesive layer 3.

Specifically, the number of the electric cores 4 can be multiple, each electric core 4 is directly installed in the containing space 21 of the positioning frame 2, the positioning frame 2 with the multiple electric cores 4 installed therein forms a battery pack, two edges of the electric cores 4 are fixed through the first structural adhesive layer 3 after the electric cores are installed in the positioning frame 2, and when the single electric core 4 is damaged, the single electric core 4 can be directly and conveniently detached and replaced; the problem that the single battery cell 4 is not replaced in the traditional battery pack is solved. Secondly, by placing a plurality of battery cells 4 in the positioning frame 2, the battery pack is loaded in units of the positioning frame 2, so that the assembling speed of the battery pack can be improved.

In some embodiments, as shown in fig. 4, a plurality of cross beams 5 are fixed inside the frame 1, the plurality of cross beams 5 are spaced apart along the second direction, and the length direction of the cross beams 5 is extended along the first direction to divide the inside of the frame 1 into a plurality of mounting areas 11; the top of each beam 5 (the top of the beam 5 is the side of the beam 5 facing the opening of the frame 1) is fixed with a pressing plate 6, and the pressing plate 6 presses the battery cells 4 positioned at two sides of the beam 5 into the corresponding positioning frames 2.

The length direction of the cross beam 5 may extend along the length direction of the frame 1, the interval directions of the cross beams 5 may be distributed at intervals along the width direction of the frame 1, the interior of the frame 1 is divided into a plurality of mounting areas 11, and the electric core 4 in the positioning frames 2 of two adjacent rows is fixed in the positioning frames 2 by adopting the pressing plate 6. The pressing plate 6 is adopted to compress tightly and install along the height direction of the battery cell 4, so that the firm installation of the battery cell 4 is ensured, and the pressing plate 6 is arranged at the top of the cross beam 5, so that the pressing plate 6 does not occupy the inner space of the frame 1, and the space utilization rate of the battery pack is further improved.

In some embodiments, as shown in fig. 4, a second structural adhesive layer 7 is disposed between the cross beam 5 and the positioning frames 2 of two adjacent rows. The second structural adhesive layer 7 can complete the preliminary fixing work of the positioning frame 2, and ensure the placement work of the subsequent battery cells 4.

In some embodiments, as shown in fig. 4 and 6, the cross beam 5 is hollow and extends therethrough in a first direction. The cross beam 5 is hollow and penetrates in the direction of the cross beam, so that the weight of the battery pack can be further reduced.

Further, the middle plate is further arranged in the hollow cavity of the cross beam 5, wherein the middle plate divides the cavity of the cross beam 5 into two parts, so that the structural strength of the cross beam 5 can be improved, and the integral structural strength of the battery pack is ensured.

In some embodiments, as shown in fig. 4 and 5, the pressing plate 6 includes a first plate body, a second plate body, and a third plate body that are sequentially connected, where the first plate body and the third plate body are connected through the second plate body; the first plate body and the third plate body are positioned on the same side of the thickness direction of the second plate body, and the first plate body and the third plate body are respectively arranged at preset included angles with the second plate body; the included angle is greater than 0 degrees and less than 180 degrees. The pressure plate 6 also comprises two external flanges 61; one of the two outward flanges 61 is connected to one end of the first plate body, which is far away from the second plate body, the other one of the two outward flanges 61 is connected to one end of the third plate body, which is far away from the second plate body, and the two outward flanges 61 are used for pressing the battery cell 4 in the positioning frame 2; the second plate body is provided with a plurality of first threaded holes 62, the top of the cross beam 5 is provided with a plurality of second threaded holes 51, and the first threaded holes 62 and the second threaded holes 51 are internally and screwed with bolts 63 so as to fix the pressing plate 6 on the top of the cross beam 5.

In some embodiments, along the thickness direction of the second body, the surface of the side of the second body facing away from the first plate body is attached to the top of the cross beam 5.

Wherein, through two turnups 61 of two clamp plates 6 with electric core 4 in corresponding locating frame 2, further improved electric core 4's stability and reliability of laying work, the space volume that the turnup 61 occupy simultaneously is little, can guarantee the space utilization of battery package. The bolts 63 can be vertically threaded into the cavity of the cross beam 5 or threaded out of the cavity of the cross beam 5, so that the operation is convenient; on the other hand, the bolts 63 are hidden in the space surrounded by the first plate body, the second plate body and the third plate body, so that the overall appearance simplicity of the battery plate is ensured.

In some embodiments, as shown in fig. 4, a cushion 8 is disposed between each of the cuffs 61 and the cells 4. The buffer pad 8 can protect the battery cell 4, and prevent the battery cell 4 from being scratched and damaged by the flanging 61.

In some embodiments, as shown in fig. 4, two third structural adhesive layers 9 are further disposed on each pressing plate 6; wherein, a third structural adhesive layer 9 is arranged on the first plate body and/or the flanging 61 connected with the first plate body, and the third structural adhesive layer 9 is also connected with a second edge of the battery cell 4 positioned at one side of the cross beam 5, the second edge is positioned on the top surface of the battery cell 4, and the second edge is arranged close to the pressing plate 6; the other third structural adhesive layer 9 is disposed on the third plate body and/or the flanging 61 connected with the third plate body, and the third structural adhesive layer 9 is further connected with a third edge of the cell 4 located at the other side of the beam 5, the third edge is located on the top surface of the cell 4, and the third edge is disposed close to the pressing plate 6. Wherein the third structural adhesive layer 9 plays a double fixing role.

In some embodiments, as shown in fig. 5, at least two first threaded holes 62 with unequal distances from the first plate body are formed on the same pressing plate 6, so that the fixing work between the pressing plate 6 and the cross beam 5 can be improved.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that in the present utility model, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery pack structure, comprising:

the frame (1) is an accommodating cavity with an opening at one end, a plurality of cross beams (5) are fixedly arranged in the frame (1), the cross beams (5) are distributed at intervals along a second direction, the interior of the frame (1) is divided into a plurality of mounting areas (11), and the mounting areas (11) are distributed at intervals along the second direction;

a plurality of locating frames (2), every locating frame (2) and frame (1) fixed connection, every all be provided with a plurality of locating frames (2) in installation region (11), locating frame (2) have the accommodation space that is used for holding electric core (4), be provided with first structural adhesive layer (3) in locating frame (2), first structural adhesive layer (3) and be located two first edges of relative setting on electric core (4) bottom surface all connect the setting, so as to be fixed in electric core (4) in locating frame (2).

2. The battery pack structure of claim 1, wherein:

the positioning frame (2) comprises:

the frame body (22) comprises a bottom plate and four side walls positioned above the bottom plate, and accommodating gaps for accommodating the battery cells (4) are formed in the periphery of the bottom plate and the four side walls;

a plurality of partition plates (24), wherein the partition plates (24) are distributed at intervals along the first direction and divide the accommodating space into a plurality of accommodating spaces (21); each accommodating space (21) is internally provided with a battery cell (4) and a first structural adhesive layer (3), and two first edges which are oppositely arranged on the bottom surface of each battery cell (4) are fixed in each accommodating space (21) through the first structural adhesive layer (3).

3. The battery pack structure of claim 2, wherein: the bottom plate in each accommodating space (21) is provided with a groove, and the first structural adhesive layer (3) is at least partially arranged in the groove.

4. The battery pack structure of claim 1, wherein: the two first edges are edges formed by intersecting narrow faces and bottom faces of the electric cores (4), and the narrow face of each electric core (4) is close to the cross beam (5).

5. The battery pack structure of claim 1, wherein:

the top of each cross beam (5) is fixedly provided with a pressing plate (6), and the pressing plates (6) are used for pressing the electric cores (4) positioned on two sides of the cross beams (5) into the corresponding positioning frames (2).

6. The battery pack structure of claim 5, wherein:

and second structural adhesive layers (7) are arranged between the cross beams (5) and the adjacent two rows of positioning frames (2).

7. The battery pack structure of claim 5, wherein:

the pressing plate (6) comprises a first plate body, a second plate body and a third plate body which are sequentially connected, and the first plate body is connected with the third plate body through the second plate body; the first plate body and the third plate body are positioned on the same side of the thickness direction of the second plate body, and the first plate body and the third plate body are respectively arranged at preset included angles with the second plate body; the pressing plate (6) further comprises two flanging edges (61); one of the two outward flanges (61) is connected to one end of the first plate body, which is far away from the second plate body, the other one of the two outward flanges (61) is connected to one end of the third plate body, which is far away from the second plate body, and the two outward flanges (61) are used for compressing the battery cell (4) in the positioning frame (2).

8. The battery pack structure of claim 7, wherein: a plurality of first threaded holes (62) are formed in the second plate body, a plurality of second threaded holes (51) are formed in the top of the cross beam (5), and bolts (63) are connected with the first threaded holes (62) and the second threaded holes (51) in a threaded mode, so that the pressing plate (6) is fixed to the top of the cross beam (5).

9. The battery pack structure of claim 8, wherein:

a buffer pad (8) is arranged between the flanging (61) and the battery cell (4).

10. The battery pack structure of claim 5, wherein:

each pressing plate (6) is also provided with two third structural adhesive layers (9); the third structural adhesive layer (9) is arranged on the first plate body and/or an outward turned edge (61) connected with the first plate body, the third structural adhesive layer (9) is also connected with a second edge of the battery cell (4) positioned at one side of the cross beam (5), the second edge is positioned on the top surface of the battery cell (4), and the second edge is arranged close to the pressing plate (6); the other third structural adhesive layer (9) is arranged on the third plate body and/or an outward flange (61) connected with the third plate body, the third structural adhesive layer (9) is also connected with a third edge of the battery cell (4) positioned on the other side of the cross beam (5), the third edge is positioned on the top surface of the battery cell (4), and the third edge is close to the pressing plate (6).