CN221447352U

CN221447352U - Battery fixing device and battery pack

Info

Publication number: CN221447352U
Application number: CN202323059152.2U
Authority: CN
Inventors: 郑琳; 储焰南
Original assignee: Lanjun New Energy Technology Co ltd
Current assignee: Lanjun New Energy Technology Co ltd
Priority date: 2023-11-13
Filing date: 2023-11-13
Publication date: 2024-07-30
Anticipated expiration: 2033-11-13

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery fixing device and a battery pack. The battery fixing device comprises a fixing plate arranged at the top ends of a plurality of electric cores, a plurality of reinforcing ribs are arranged on one side of the fixing plate, and a positioning groove matched with the top ends of the electric cores is formed between any two adjacent reinforcing ribs. And, based on the setting that adjacent strengthening rib formed the constant head tank, the electric core top can be effectively spacing in the constant head tank for the electric core obtains spacing, thereby effectively reduces rocking and the accumulation tolerance of electric core top in the assembly process, avoids influencing assembly precision.

Description

Battery fixing device and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery fixing device and a battery pack.

Background

The cylindrical battery is fitted into a pre-positioning groove of the bottom bracket or the module frame, and in order to facilitate the assembly and sealing, generally, the diameter of the pre-positioning groove is larger than that of the cylindrical battery.

The inventor researches find that after the cylindrical battery is assembled in the pre-positioning groove, one end of the cylindrical battery, which is far away from the pre-positioning groove, is unconstrained, and the conditions of inclination and larger displacement are easy to occur, so that the assembly precision of the electric connection end is reduced, and the risk of out-of-tolerance accumulated tolerance is caused.

Disclosure of utility model

The utility model aims to provide a battery fixing device and a battery pack, which can fix the top of a battery cell and effectively limit the battery cell, so that the displacement of the battery cell or the shaking of the top end of the battery cell in the assembly process is reduced.

Embodiments of the present utility model are implemented as follows:

In a first aspect, the utility model provides a battery fixing device, which comprises a fixing plate arranged at the top ends of a plurality of battery cells, wherein one side of the fixing plate is provided with a plurality of reinforcing ribs, and a positioning groove matched with the top ends of the battery cells is formed between any two adjacent reinforcing ribs.

In an alternative embodiment, the reinforcing ribs comprise arc-shaped structures, and a circular groove matched with the top end of the battery cell is formed between any two adjacent arc-shaped structures.

In an alternative embodiment, any three of the arcuate structures adjacent to each other form a curved triangular groove.

In an alternative embodiment, the arc length of the arc-like structure ranges from 1/12 to 2/3 of the circumference of the cell.

In an alternative embodiment, the battery fixing device further comprises a conductive bar, and the conductive bar is inlaid in the fixing plate.

In an alternative embodiment, the battery fixture further comprises a battery post welded to the conductive bar.

In an alternative embodiment, the battery fixing device further comprises bolts and a module frame, the fixing plates are provided with bolt holes matched with the bolts, the bolts correspond to the bolt holes one by one, and the bolts are connected with the module frame through the bolt holes.

In an alternative embodiment, the battery fixing device further includes a gasket disposed between the fixing plate and the module frame.

In an alternative embodiment, a containing groove for containing the bottom end of the battery cell is formed in the bottom of the module frame, and sealant is arranged in the containing groove.

In a second aspect, the present utility model provides a battery pack, including a plurality of battery cells and a battery fixing device according to any one of the foregoing embodiments, wherein the top ends of the battery cells are matched with the positioning grooves.

The beneficial effects of the embodiment of the utility model include:

The utility model provides a battery fixing device and a battery pack, which comprise a fixing plate arranged at the top ends of a plurality of battery cells, wherein one side of the fixing plate is provided with a plurality of reinforcing ribs, and a positioning groove matched with the top ends of the battery cells is formed between any two adjacent reinforcing ribs. And, based on the setting that adjacent strengthening rib formed the constant head tank, the electric core top can be effectively spacing in the constant head tank for the electric core obtains spacing, thereby effectively reduces rocking and the accumulation tolerance of electric core top in the assembly process, avoids influencing assembly precision.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a first view of a fixing plate according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a second view of a fixing plate according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of the structure shown in FIG. 2A according to an embodiment of the present utility model;

fig. 4 is a schematic view illustrating a first perspective of a battery fixing device according to an embodiment of the utility model;

FIG. 5 is a schematic cross-sectional view along A-A in FIG. 4 according to an embodiment of the present utility model;

fig. 6 is a second view of the battery fixing device according to the embodiment of the present utility model;

fig. 7 is an exploded view of a battery fixing device according to an embodiment of the present utility model;

fig. 8 is an enlarged schematic view of the structure a in fig. 7 according to an embodiment of the present utility model.

Icon 10-battery fixation device; 100-fixing plates; 110-reinforcing ribs; 111-positioning grooves; 130-arc structure; 131-circular grooves; 133-curved triangular grooves; 150-bolt holes; 200-cell; 300-conducting bars; 400-battery post; 500-module frames; 510-a receiving groove; 610-bolts; 630-gasket.

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. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the 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.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, 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 to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" 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 will be understood in specific cases by those of ordinary skill in the art.

As described in the background art, in the conventional battery fixing device or battery pack, when the cylindrical battery is assembled to the predetermined positioning groove, since one end of the cylindrical battery, which is far away from the predetermined positioning groove, is not limited by any constraint, the cylindrical battery is easily inclined or displaced in the assembly process, thereby resulting in a reduction in the assembly accuracy of the electrical connection terminal and a risk of tolerance stack-up.

In order to improve the above problems, the present utility model provides a battery fixing device and a battery pack, which can fix the top of a battery cell, and effectively limit the battery cell, so as to reduce the displacement of the battery cell or the shake of the top end of the battery cell during the assembly process. Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, fig. 1 is a first view of a fixing plate 100 according to an embodiment, fig. 2 is a second view of the fixing plate 100 according to the embodiment, and fig. 3 is a partial enlarged view of a structure a in fig. 2. In detail, the present application provides a battery fixing device 10, which includes a fixing plate 100 disposed at the top ends of a plurality of battery cells 200, wherein a plurality of reinforcing ribs 110 are disposed on one side of the fixing plate 100, and a positioning slot 111 for matching with the top ends of the battery cells 200 is formed between any two adjacent reinforcing ribs 110.

Based on the setting that adjacent strengthening rib 110 formed constant head tank 111, electric core 200 top can effectively be spacing in constant head tank 111 for electric core 200 obtains spacing, thereby effectively reduces electric core 200 top and rocks and accumulate the tolerance in the assembly process, avoids influencing assembly precision.

In addition, the fixing plate 100 is an insulating fixing plate 100, and the provision of the reinforcing ribs 110 not only can limit the top end of the battery cell 200, but also can improve the strength of the fixing plate 100. In addition, compared with other structures, the fixing plate 100 does not need any separate limiting plate when realizing the two functions, thereby avoiding increasing the weight of the module and reducing the cost of parts.

Referring to fig. 4 and 5, fig. 4 is a first perspective view of the battery fixing device 10 according to the present embodiment, and fig. 5 is a schematic cross-sectional view along A-A in fig. 4. To realize the serial connection of the battery cells 200, the battery fixing device 10 further includes a conductive bar 300, and the conductive bar 300 is embedded in the fixing plate 100.

To improve the structural strength of the battery fixing device 10 and further to achieve the serial connection of the battery cells 200, the battery fixing device 10 further includes a battery post 400, and the battery post 400 is welded to the conductive bar 300. Through the arrangement, the fixing plate 100, the conductive bars 300 and the battery pole 400 can be fixed together, so that the series connection of the battery cells 200 is realized.

Referring to fig. 6, 7 and 3, in order to further enhance the structural strength of the battery fixing device 10, the battery fixing device 10 further includes bolts 610 and a module frame 500, and the fixing plate 100 is provided with bolt holes 150 matching the bolts 610, the bolts 610 are in one-to-one correspondence with the bolt holes 150, and the bolts 610 are connected with the module frame 500 through the bolt holes 150.

By the above arrangement, the frame of the module frame 500 is fixedly connected to the insulating plate, and then functions similar to the reinforcing ribs 110, in particular, the reinforcing ribs 110 in the longitudinal direction of the fixing plate 100. Based on this, the strength and rigidity of the battery fixing device 10 as a whole are improved after the assembly is completed. Of course, the applicant can provide other fasteners to fix the fixing plate 100 to the module frame 500 according to actual needs.

Referring to fig. 8, in order to improve the sealing performance of the battery fixing device 10, the battery fixing device 10 further includes a gasket 630, and the gasket 630 is disposed between the fixing plate 100 and the module frame 500. In detail, when the fixing plate 100 is fixed with the module frame 500 by the bolts 610, the gasket 630 is compressed by force to achieve sealing. Preferably, the sealing pad 630 may be provided as a silica gel pad.

To further realize the positioning of the battery cell 200, referring to fig. 7 again, a receiving groove 510 for receiving the bottom end of the battery cell 200 is formed at the bottom of the module frame 500, and sealant is disposed in the receiving groove 510. Based on the above arrangement, it can be known that the top end of the battery cell 200 is fixed by the positioning groove 111 formed between the adjacent reinforcing ribs 110, the bottom end of the battery cell 200 is limited by the accommodating groove 510, and the sealant is smeared in the accommodating groove 510, so that the bottom end of the battery cell 200 is adhered to the accommodating groove 510, and further positioning is achieved.

Referring to fig. 1, fig. 2, and fig. 3 again, as an alternative embodiment, the reinforcing rib 110 includes arc structures 130, and a circular groove 131 matched with the top end of the battery cell 200 is formed between any two adjacent arc structures 130, which is to be described, wherein the arc structures 130 are equivalent to the reinforcing rib 110 extending along the outer contour of the battery cell 200, so as to achieve close fitting and accurate limiting with the battery cell 200. Alternatively, the arc structure 130 is disposed along the width direction of the fixing plate 100.

Preferably, to further limit the battery cell 200, the arc length of the arc-shaped structure 130 ranges from 1/12 to 2/3 of the circumference of the battery cell 200.

Further, in order to provide the reinforcing ribs 110 on the fixing plate 100 to the greatest extent, any three of the arc structures 130 adjacent to each other form a curved-side triangle groove 133. That is, the curved triangular groove 133 can be formed at the junction of the arc-like structures 130. Based on this, the compactness of the arc-like structure 130 is enhanced, and the number of circular recesses 131 is correspondingly increased.

In summary, the present utility model provides a battery fixing device 10, which includes a fixing plate 100 disposed at the top ends of a plurality of battery cells 200, wherein a plurality of reinforcing ribs 110 are disposed on one side of the fixing plate 100, and a positioning slot 111 for matching with the top ends of the battery cells 200 is formed between any two adjacent reinforcing ribs 110. And, based on the setting that adjacent strengthening rib 110 formed constant head tank 111, electric core 200 top can effectively be spacing in constant head tank 111 for electric core 200 obtains spacing, thereby effectively reduces electric core 200 top and rocks and the accumulation tolerance in the assembly process, avoids influencing assembly precision.

In addition, the utility model also provides a battery pack, which comprises a plurality of battery cells 200 and the battery fixing device 10, wherein the top ends of the battery cells 200 are matched with the positioning grooves 111. Therefore, the positioning groove 111 can be formed based on the adjacent reinforcing ribs 110, the top end of the battery cell 200 can be effectively limited in the positioning groove 111, so that the battery cell 200 is limited, shaking and accumulation tolerance of the top end of the battery cell 200 in the assembly process are effectively reduced, and the assembly precision is prevented from being influenced.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The battery fixing device is characterized by comprising a fixing plate (100) arranged at the top ends of a plurality of battery cells (200), wherein a plurality of reinforcing ribs (110) are arranged on one side of the fixing plate (100), and a positioning groove (111) matched with the top ends of the battery cells (200) is formed between any two adjacent reinforcing ribs (110).

2. The battery fixing device according to claim 1, wherein the reinforcing rib (110) comprises arc structures (130), and a circular groove (131) for being matched with the top end of the battery cell (200) is formed between any two adjacent arc structures (130).

3. The battery fixing device according to claim 2, wherein any three of the arc-shaped structures (130) adjacent to each other form a curved-side triangle groove (133).

4. The battery fixation device of claim 2, wherein the arc length of the arc-like structure (130) ranges from 1/12 to 2/3 of the circumference of the cell (200).

5. The battery fixation device according to claim 1, wherein the battery fixation device (10) further comprises a conductive strip (300), the conductive strip (300) being embedded in the fixation plate (100).

6. The battery fixation device of claim 5, wherein the battery fixation device (10) further comprises a battery post (400), the battery post (400) being welded to the conductive strip (300).

7. The battery fixing device according to claim 1, wherein the battery fixing device (10) further comprises bolts (610) and a module frame (500), and the fixing plate (100) is provided with bolt holes (150) matched with the bolts (610), the bolts (610) are in one-to-one correspondence with the bolt holes (150), and the bolts (610) are connected with the module frame (500) through the bolt holes (150).

8. The battery fixing device according to claim 7, wherein the battery fixing device (10) further includes a gasket (630), the gasket (630) being disposed between the fixing plate (100) and the module frame (500).

9. The battery fixing device according to claim 7, wherein a receiving groove (510) for receiving the bottom end of the battery cell (200) is formed in the bottom of the module frame (500), and a sealant is disposed in the receiving groove (510).

10. A battery pack comprising a plurality of battery cells (200) and a battery fixing device (10) according to any one of claims 1 to 9, wherein the top ends of the battery cells (200) are engaged with the positioning grooves (111).