CN216250848U

CN216250848U - Battery module

Info

Publication number: CN216250848U
Application number: CN202122305666.6U
Authority: CN
Inventors: 彭志鹏; 陈智伟
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-08
Anticipated expiration: 2031-09-23

Abstract

The utility model belongs to the technical field of batteries and discloses a battery module. This battery module includes the box and arranges the electric core group that forms by a plurality of electric cores ranks, and the electric core group sets up in the box. This battery module still includes two end plates and two curb plates, and two end plates set up respectively at the both ends of the edge length direction of electric core group, and first through-hole has been seted up respectively along the direction of height of electric core group to its left and right sides, wears to be equipped with the pull rod in the first through-hole. Two curb plates are located the left and right sides of electric core group, and the curb plate includes the curb plate main part and connects in the connecting portion at curb plate main part minor face border, and the hem supports to press in the top of electric core group, and connecting portion are used for connecting the pull rod. The end plates, the side plates and the bottom of the box body form a containing cavity for containing the electric core group. This battery module simple structure can carry out spacingly with electric core in horizontal direction and vertical direction, prevents that electric core drunkenness.

Description

Battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery module.

Background

At present, the battery cell has three types of cylindrical battery cells, soft-packaged battery cells and square battery cells, wherein the square battery cell is a structure suitable for a regular box body, and the battery cell has a large volume and is favorable for improving the energy density of the battery cell. The battery module refers to an assembly in which a plurality of battery cells are connected in series or in parallel and packaged together through a housing frame. The grouping mode of the modules is an important way for improving the space utilization rate of the battery pack system.

The existing battery module generally adopts an end plate and a side plate to enclose a cavity for accommodating a battery core, and the side plate is fixedly connected with the end plate through a bolt. Adopt the battery module in groups of this kind of mode, the connected mode is comparatively complicated, can only carry on spacingly to the horizontal direction of electric core, and the vertical direction of electric core relies on the pretightning force after the module inflation completely fixed.

Therefore, it is urgently needed to provide a battery module which has a simple structure and can simultaneously realize the limitation of the battery cell in the horizontal direction and the vertical direction to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery module, which is simple in structure and can limit the battery cell in the horizontal direction and the vertical direction to prevent the battery cell from moving.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a battery module, includes the box and arranges the electric core group that forms by a plurality of electric core ranks, the electric core group set up in the box, still include:

the two end plates are respectively arranged at two ends along the length direction of the electric core group, two first through holes are respectively formed in two sides of each end plate along the height direction of the electric core group, and a pull rod penetrates through each first through hole;

two curb plates, every the curb plate includes curb plate main part, hem and connecting portion, two the curb plate main part sets up and follows the electric core group is along length direction's both sides, the hem connect in the top of curb plate main part and orientation the direction of electric core group extends, in order to support press in the top of electric core group, connecting portion connect in the side of curb plate main part, connecting portion are used for connecting the pull rod makes the end plate the curb plate with bottom half forms and holds the appearance chamber of electric core group.

Optionally, the side plate further comprises a folding edge, and the folding edge is connected to the top of the side plate main body and extends towards the direction of the electric core assembly so as to abut against the top of the electric core assembly.

Optionally, connecting portion include first journal stirrup and second journal stirrup, first journal stirrup is followed the length direction of curb plate main part extends, the second journal stirrup with first journal stirrup is connected and to the direction of electric core group extends, be provided with the second through-hole on the second journal stirrup, the pull rod passes the second through-hole sets up.

Optionally, the top and the bottom of the side plate main body are respectively provided with one connecting part.

Optionally, the distance between the second lug of the connecting part at the top and the second lug of the connecting part at the bottom is equal to the height of the side edge of the end plate.

Optionally, the upper end of the tie rod is provided with a tightening bolt that tightens the second lug of the connection portion of the top between the tightening bolt and the upper end face of the end plate.

Optionally, the second lug of the connecting portion of the bottom portion is connected between the bottom surface of the box body and the lower end surface of the end plate.

Optionally, the pull rod is provided with an external thread, the first through hole is provided with an internal thread, and the pull rod is fixedly connected with the first through hole through the external thread and the internal thread.

Optionally, the bottom of box is provided with the longeron, be provided with the screw hole on the longeron, the pull rod lower extreme passes the screw hole with the bottom threaded connection of box.

Optionally, the battery module further comprises a fixing band, wherein the fixing band is horizontally arranged and is arranged on the periphery of the cuboid frame formed by the end plate and the side plate in a pressing and sleeving manner.

Has the advantages that:

according to the battery module provided by the utility model, the connecting part is arranged on the edge of the short side of the side plate main body, and the connecting part is fixedly connected to the pull rods penetrating through the two sides of the end plate, so that the end plate and the side plate form a containing cavity for containing the electric core group. Through connecting portion in the pull rod, limited the displacement of electric core group to make the electric core group fix and hold the intracavity, even take place strong vibration, the electric core group also can not rock in holding the intracavity. This battery module just can reach the purpose of spacing electric core group through the structure of simple adjustment curb plate, need not to add the pilot hole on the end plate, and simple structure has reduced the assembly process for prior art, effectively prevents the dislocation problem of electric core and end plate, and the good reliability.

Drawings

Fig. 1 is an exploded view of a battery module provided in the present invention;

fig. 2 is a schematic structural diagram of a battery module provided in the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a partially enlarged view at B in fig. 2.

In the figure:

100. the electric core group; 200. an end plate; 210. a first through hole; 220. a pull rod; 300. a side plate; 310. a side plate main body; 320. folding edges; 330. a connecting portion; 331. a first lug; 332. a second lug; 333. a second through hole; 334. screwing down the bolt; 400. and (7) fixing the belt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the battery module provided in this embodiment includes a case and a plurality of electric core groups 100 formed by arranging rows and columns of electric cores, and the electric core groups 100 are disposed in the case. The battery module further includes two end plates 200 and two side plates 300. The two end plates 200 are respectively arranged at the front side and the rear side of the electric core group 100, the left end and the right end of the end plates 200 are respectively provided with a first through hole 210 along the height direction of the electric core group 100, and a pull rod 220 is arranged in the first through hole 210 in a penetrating way. Two side plates 300 are provided at both left and right sides of the electric core pack 100, and the side plates 300 mainly include a side plate main body 310 and a connecting part 330. The connecting part 330 is connected to the short edge of the side plate 300 and is used for connecting the pull rod 220 penetrating through the first through hole 210, so that the end plate 200, the side plate 300 and the bottom of the case form a cavity for accommodating the electric core pack 100.

The battery module is provided with the folding edges 320 at the long edge of the side plate main body 310, the connecting parts 330 are arranged at the short edge of the side plate main body 310, and the connecting parts 330 are fixedly connected to the pull rods 220 penetrating through the two sides of the end plate 200, so that the end plate 200 and the side plate 300 form a containing cavity for containing the battery cell pack 100. The connecting part 330 is connected to the pull rod 220, so that the displacement of the electric core assembly 100 is limited, the electric core assembly 100 is fixed in the accommodating cavity, and the electric core assembly 100 cannot shake in the accommodating cavity even if strong vibration occurs. This battery module just can reach spacing electric core group 100's purpose through simple adjustment curb plate 300's structure, need not to add the pilot hole on end plate 200, and simple structure has reduced the assembly process for prior art, effectively prevents electric core and end plate 200's dislocation problem, and the good reliability.

With continued reference to fig. 1, the side plate main body 310 is a substantially rectangular plate, and the folding edges 320 are connected to the long edges of the side plate main body 310 and extend toward the direction of the electric core assembly 100 so as to press against the top of the electric core assembly 100, in other embodiments, the folding edges 320 can be arranged at the edges above and below the side plate main body 310, so that the electric core assembly 100 is clamped between the two folding edges 320. The connecting part 330 in the figure comprises a first lug 331 and a second lug 332, the first lug 331 extends along the length direction of the side plate main body 310, the second lug 332 is connected with the first lug 331 and extends towards the electric core assembly 100, and the second lug 332 is provided with a second through hole 333 for the pull rod 220 to pass through. It can be understood that the pull rod 220 is disposed along the vertical direction of the electric core assembly 100, therefore, the second lug 332 needs to be disposed horizontally, so as to enable the second through hole 333 to penetrate into the pull rod 220, the first lug 331 is a transition plate between the side plate main body 310 and the second lug 332, the first lug 331 and the second lug 332 are disposed vertically, and are connected in an L shape, so as to enhance the connection area between the second lug 332 and the side plate main body 310, thereby increasing the connection strength and preventing the second lug 332 from being bent and broken. In other embodiments, the connecting portion 330 may be a flat plate horizontally connected to the side plate main body 310 and provided with a mounting hole, a hollow cylindrical structure connected to the side plate main body 310, or the like, and any structure capable of being connected to the pull rod 220 is within the scope of the present invention. Alternatively, the adjacent side plate main body 310, the folded edge 320 and the connecting portion 330 may be welded, riveted or the like, and of course, the side plate 300 may also be integrally formed.

Further, the number of the connection parts 330 of each short edge of each side plate 300 may be one, and when the number of the connection parts 330 on the short edge is one, the connection parts 330 may be disposed above the short edge or below the short edge. Of course, the number of the connection portions may be plural to increase the reliability of the connection. In this embodiment, two connection parts 330 are provided at each short edge of each side plate 300, one connection part 330 is connected to the top of the side plate main body 310, and the other connection part 330 is connected to the bottom of the side plate main body 310. The distance between the second lug at the top of the side plate main body 310 and the second lug at the bottom of the side plate main body 310 is equal to the height of the side of the end plate 200, so that the end plate 200 can be caught between the two second lugs.

Fig. 2 is a schematic structural view of the battery module provided in the present embodiment, fig. 3 is a partial enlarged view of a point a in fig. 2, and fig. 4 is a partial enlarged view of a point B in fig. 2. As shown in fig. 2, when the end plate 200 and the side plate 300 are coupled, the tie bar 220 passes through the second lug of the top coupling part, the first through hole 210, and the second lug of the bottom coupling part in sequence. Further, as shown in fig. 3, the upper end of the drawbar 220 is provided with a tightening bolt 334, and the tightening bolt 334 connects the second lug of the top connection part to the tightening bolt 334 and the upper end surface of the end plate 200. As shown in fig. 4, the second lug of the bottom connecting part is connected between the bottom surface of the case and the lower end surface of the end plate 200. In this embodiment, a truss is disposed at the bottom of the box body, a threaded hole is disposed on the truss, and the lower end of the pull rod 220 penetrates through the threaded hole to be in threaded connection with the bottom of the box body. The assembling mode of threaded connection is adopted, the structure is simple, and the mounting and dismounting are convenient. Of course, in other embodiments, other connection means may be used.

Optionally, an external thread is disposed on the pull rod 220, an internal thread is disposed in the first through hole 210 of the end plate 200, and the pull rod 220 and the first through hole 210 are fixedly connected through the internal thread and the external thread. The connection between the end plate 200 and the side plate 300 is more stable by the screw connection with the first through hole 210, and in other embodiments, the matching place of the first through hole 210 and the pull rod 220 may not be provided with screw threads, but the end plate 200 is clamped between the second lugs of the top connection part and the bottom connection part by screwing the second lugs of the top connection part and the bottom connection part to the pull rod 220. Optionally, an opening is formed in the end plate 200 at the middle section of the first through hole 210, so that the pull rod 220 and the first through hole 210 can be conveniently assembled, and the end plate 200 is light.

With continued reference to fig. 2, the battery module further includes a fixing band 400, and after the end plate 200 and the side plate 300 are assembled, the fixing band 400 may be horizontally inserted around the rectangular parallelepiped frame formed by the end plate 200 and the side plate 300. Alternatively, the fixing band 400 may be a steel band, the number of which is at least two, and a plurality of fixing bands 400 are horizontally disposed to increase the coupling strength and prevent the structure from being loosened.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a battery module, includes the box and arranges electric core group (100) that form by a plurality of electric core ranks, electric core group (100) set up in the box, its characterized in that still includes:

the two end plates (200) are respectively arranged at two ends of the electric core group (100) along the length direction, two first through holes (210) are respectively formed in two sides of each end plate (200) along the height direction of the electric core group (100), and a pull rod (220) penetrates through each first through hole (210);

two curb plates (300), every curb plate (300) include curb plate main part (310) and connecting portion (330), two curb plate main part (310) set up along electric core group (100) are along length direction's both sides, connecting portion (330) connect in the side of curb plate main part (310), connecting portion (330) are used for connecting pull rod (220), make end plate (200) curb plate (300) with the bottom half forms and holds the appearance chamber of electric core group (100).

2. The battery module according to claim 1, wherein the side plate (300) further comprises a folding edge (320), and the folding edge (320) is connected to the top of the side plate main body (310) and extends towards the direction of the electric core assembly (100) to press against the top of the electric core assembly (100).

3. The battery module according to claim 1, wherein the connecting part (330) comprises a first lug (331) and a second lug (332), the first lug (331) extends along the length direction of the side plate main body (310), the second lug (332) is connected with the first lug (331) and extends towards the electric core set (100), a second through hole (333) is formed in the second lug (332), and the pull rod (220) is disposed through the second through hole (333).

4. The battery module according to claim 1, wherein the side plate main body (310) is provided at the top and bottom of the side thereof with one of the connection parts (330), respectively.

5. The battery module according to claim 1, wherein the distance between the second lug of the connecting part (330) at the top and the second lug of the connecting part (330) at the bottom is equal to the height of the side of the end plate (200).

6. The battery module according to claim 1, wherein the upper end of the tie rod (220) is provided with a tightening bolt (334), and the tightening bolt (334) tightens the second lug of the top connection part (330) between the tightening bolt (334) and the upper end face of the end plate (200).

7. The battery module according to claim 1, wherein the second lug of the connecting part (330) of the bottom is connected between the bottom surface of the case and the lower end surface of the end plate (200).

8. The battery module according to any one of claims 1 to 7, wherein the tie rod (220) is provided with an external thread, the first through hole (210) is provided with an internal thread, and the tie rod (220) is fixedly connected with the first through hole (210) through the external thread and the internal thread.

9. The battery module according to any one of claims 1 to 7, wherein the bottom of the box body is provided with a girder, the girder is provided with a threaded hole, and the lower end of the pull rod (220) is in threaded connection with the bottom of the box body through the threaded hole.

10. The battery module according to any one of claims 1 to 7, further comprising a fixing band (400), wherein the fixing band (400) is horizontally arranged and is arranged on the periphery of the rectangular frame formed by the end plate (200) and the side plate (300) in a pressing and sleeving manner.