CN217788603U

CN217788603U - Battery module

Info

Publication number: CN217788603U
Application number: CN202221647681.7U
Authority: CN
Inventors: 彭道虎
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-11-11
Anticipated expiration: 2032-06-28

Abstract

The utility model belongs to the technical field of the battery, a battery module is disclosed. This battery module includes the module frame, electric core group and retaining member, the module frame includes first U type support and second U type support, set up relatively with the opening of second U type support between the first U type, first U type support and second U type support enclose into accommodation space jointly, the electric core group sets up in accommodation space, the retaining member can fasten first U type support and second U type support, thereby apply the pretightning force to the electric core group, guarantee the inflation inhibition ability of first U type support and second U type support to the electric core group, the volume of battery module has been reduced in setting up of this module frame simultaneously, can guarantee to rationally settle this battery module under the limited condition of installation space, the suitability of battery module has been improved.

Description

Battery module

Technical Field

The utility model relates to a battery technology field especially relates to a battery module.

Background

The traditional battery module is generally pre-tightened by winding a PET (polyethylene terephthalate) Film or matching a steel belt with an end plate, but the expansion force inhibition capability of the traditional battery module is weaker due to the lower strength of the PET Film; by adopting the method that the end plates are matched with the steel belt, although the battery module is strongly pre-tightened, the steel belt needs to be matched with the end plates when being installed and fixed on the box body, and needs to be matched with the long bolts, so that certain requirements on the space of the box body are met. When the battery module requires to have stronger expansibility inhibition ability and the box space of installation is less, then the mode of PET membrane winding or steel band cooperation end plate can't satisfy the requirement.

Therefore, a battery module is needed to solve the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery module can apply the pretightning force to battery module, has reduced battery module's volume simultaneously, can guarantee to rationally settle this battery module under the limited condition of installation space.

To achieve the purpose, the utility model adopts the following technical proposal:

a battery module, comprising:

the module frame comprises a first U-shaped support and a second U-shaped support, the openings of the first U-shaped support and the second U-shaped support are oppositely arranged, and the first U-shaped support and the second U-shaped support (120) jointly enclose an accommodating space;

the electric core group is arranged in the accommodating space;

and the locking piece is configured to lock and fix the first U-shaped bracket and the second U-shaped bracket so as to apply pre-tightening force to the electric core group.

Optionally, first assembly holes have been seted up respectively at the both ends of first U type support, second assembly holes have been seted up respectively at the both ends of second U type support, the second assembly hole with first assembly hole is corresponding, the retaining member includes pretension bolt, pretension bolt wears to locate in proper order first assembly hole with the second assembly hole, pretension bolt is configured as right the pretightning force is exerted to the electric core group.

Optionally, a plurality of reinforcing ribs are arranged on the second U-shaped bracket along the first direction and the second direction.

Optionally, a buffer plate is arranged between the electric core group and the first U-shaped bracket and between the electric core group and the second U-shaped bracket.

Optionally, the battery core group includes a plurality of battery cores arranged in sequence, and an insulating plate is disposed between two adjacent battery cores.

Optionally, the insulating plate is a PP plate.

Optionally, the battery module further comprises a box body, and the box body is detachably connected with the module frame.

Optionally, a positioning member is disposed in the box body, and the positioning member is configured to position the module frame.

Optionally, the positioning element is a positioning pin, and the module frame is provided with a positioning hole through which the positioning pin is inserted.

Optionally, be provided with a plurality of hoist and mount otic placodes on the second U type support, it is a plurality of hoist and mount otic placode equipartition in the second U type support deviates from on the terminal surface of electric core group.

Has the advantages that:

the utility model provides a battery module, through setting up first U type support and second U type support, opening between first U type support and the second U type sets up relatively, make between the first U type and enclose into accommodation space with second U type support jointly, electric core group places in accommodation space, it is fixed with first U type support and second U type support locking through the retaining member, can apply the pretightning force to electric core group in the accommodation space, guarantee the inflation inhibition ability of module frame to electric core group, the volume of battery module has been reduced simultaneously, can guarantee to rationally settle this battery module under the limited condition of installation space.

Drawings

Fig. 1 is an exploded view of a battery module according to the present invention;

fig. 2 is a schematic structural diagram of the box body provided by the present invention.

In the figure:

100. a module frame; 110. a first U-shaped bracket; 111. a first assembly hole; 120. a second U-shaped bracket; 121. a second assembly hole; 122. reinforcing ribs; 1221. a first reinforcing rib; 1222. a second reinforcing rib; 123. hoisting the lug plate; 130. an accommodating space; 140. positioning holes;

200. the electric core group; 210. an electric core;

300. pre-tightening the bolts;

400. a buffer plate;

500. an insulating plate;

600. a box body; 610. a positioning member; 620. a threaded bore.

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 invention and are not to be construed as limiting the invention. 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 otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. 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 in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, 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, this embodiment provides a battery module, which includes a module frame 100, a cell group 200 and a locking member, where the module frame 100 includes a first U-shaped bracket 110 and a second U-shaped bracket 120, openings of the first U-shaped bracket 110 and the second U-shaped bracket 120 are oppositely arranged, so that the first U-shaped bracket 110 and the second U-shaped bracket 120 jointly enclose an accommodating space 130, the cell group 200 is disposed in the accommodating space 130, and the locking member can lock and fix the first U-shaped bracket 110 and the second U-shaped bracket 120, so as to apply a pretightening force to the cell group 200 in the accommodating space 130, ensure that the module frame 100 has a sufficient expansion inhibiting force on the cell group 200, and reduce a volume of the battery module.

Specifically, the locking member in this embodiment is a pre-tightening bolt 300, first assembling holes 111 are respectively formed in two ends of the first U-shaped bracket 110 along the first direction, second assembling holes 121 are respectively formed in two ends of the second U-shaped bracket 120, the first assembling holes 111 correspond to the second assembling holes 121 in a one-to-one correspondence manner, the electric core assembly 200 is disposed in an accommodating space 130 defined by the first U-shaped bracket 110 and the second U-shaped bracket 120, the pre-tightening bolt 300 sequentially penetrates through the first assembling holes 111 and the second assembling holes 121, the module frame 100 is fastened by the pre-tightening bolt 300, a pre-tightening force can be applied to the electric core assembly 200, the size of the pre-tightening force is controlled by controlling the torque of the pre-tightening bolt 300, the expansion inhibition capability of the first U-shaped bracket 110 and the second U-shaped bracket 120 on the electric core assembly 200 is ensured, and the scheme provided in this embodiment reduces the volume of the battery module compared with a steel belt and end plate module fastening structure in the prior art, can ensure that the battery module is reasonable under the condition that the installation space is limited, and the applicability of installing the battery module is improved.

In other embodiments, the retaining member may be a clamping assembly, specifically, two ends of the first U-shaped bracket 110 are provided with the buckles, two ends of the second U-shaped bracket 120 are provided with the latch, the buckles can be fastened on the latch to fasten the first U-shaped bracket 110 and the second U-shaped bracket 120, the battery cell 210 set 200 can be fixed in the module frame 100, the assembling mode of the clamping can improve the installation efficiency of the battery module belt, the expansion restraining force of the battery cell 210 set 200 is ensured, and the size of the battery module is reduced.

Preferably, as shown in fig. 1, a plurality of reinforcing ribs 122 are disposed on the second U-shaped bracket 120 along both the first direction and the second direction, so that the strength of the second U-shaped bracket 120 can be ensured, and the ability of the second U-shaped bracket to restrain the expansion of the electric core assembly 200 is improved.

Specifically, as shown in fig. 1, in this embodiment, two first reinforcing ribs 1221 are disposed along the first direction, three second reinforcing ribs 1222 are disposed along the second direction, each first reinforcing rib 1221 intersects with two second reinforcing ribs 1222, that is, the first reinforcing rib 1221 and the second reinforcing rib 1222 intersect to form a fence-type structure, and two ends of each second reinforcing rib 1222 extend to two sides of the second U-shaped bracket 120, so that the strength and the deformation resistance between the second U-shaped brackets can be further improved.

Preferably, as shown in fig. 1, a buffer plate 400 is disposed between the electric core assembly 200 and the first U-shaped bracket 110 and the second U-shaped bracket 120, so as to absorb and buffer the electric core assembly 200, reduce the impact of the module frame 100 on the electric core assembly 200, and ensure the safety of the electric core assembly 200.

Further, the buffer board 400 is an EVA (ethylene-vinyl acetate copolymer) foam, which has a series of characteristics of high elasticity, light weight, convenient use, ultra-thin volume, reliable performance, and the like, and can play a role in shock absorption and buffering.

Preferably, as shown in fig. 1, the battery cell pack 200 includes a plurality of battery cells 210 arranged in sequence, and an insulating plate 500 is disposed between two adjacent battery cells 210. The insulation board 500 can ensure insulation between two adjacent electric cores 210, prevent short circuit, and improve the safety of the electric core group 200. The structural shape of the insulating plate 500 is consistent with the shape of the side surface of the battery cell 210, so that when a pretightening force is applied to the battery cell pack 200 through the pretightening bolt 300, the insulating plate 500 can protect the battery cell 210 in the battery cell pack 200 and prevent the damage caused by the direct contact between the battery cell 210 and the battery cell 210.

Further, the insulating plate 500 in this embodiment is a PP (polypropylene) plate. The PP plate is light in weight, good in thermal stability and structural strength, good in insulation effect and capable of protecting the battery cell 210 under the action of the pre-tightening force of the pre-tightening bolt 300.

Preferably, the battery module still includes box 600, box 600 and module frame 100 detachable connections, and the efficiency of dismouting is improved to convenient installation and the dismantlement of module frame 100.

Specifically, in the battery module provided by this embodiment, three first assembly holes 111 are respectively formed in the left and right ends of the first U-shaped bracket 110 along the first direction in fig. 1, three second assembly holes 121 are respectively formed in the left and right ends of the second U-shaped bracket 120, after the first U-shaped bracket 110 and the second U-shaped bracket 120 are assembled, three sets of assembly holes are formed in the module frame 100 from top to bottom along the second direction in fig. 1, each first assembly hole 111 corresponds to one second assembly hole 121, after the electric core assembly 200 is placed in the accommodating space 130 surrounded by the first U-shaped bracket 110 and the second U-shaped bracket 120, two pretension bolts 300 are inserted into the middle set of threaded holes 620, nuts are screwed onto the pretension bolts 300, pretension is applied to the electric core assembly 200, then the entire module frame 100 is horizontally placed in the box 600, so that the largest end surface of the first U-shaped bracket 110 is attached to the bottom surface of the box 600, and then the pretension bolts 300 pass through the upper and lower sets of pretension assembly holes and the box 600 respectively, and then the pretension bolts 300 are horizontally placed in the box 600 to fit the box 600. The number of the first assembling holes 111 and the second assembling holes 121 in this embodiment is not particularly limited, and may be appropriately adjusted according to the size of the electric core pack 200 and the size of the module frame 100, as long as it is satisfied that one first assembling hole 111 corresponds to one second assembling hole 121.

Preferably, as shown in fig. 1 and 2, the case 600 is provided with a positioning member 610, and the positioning member 610 can position the module frame 100 in the process of preventing the module frame 100 containing the electric core pack 200 from being placed in the case 600, so that the assembly position of the module frame 100 and the case 600 is accurate, and the assembly efficiency is improved.

Further, as shown in fig. 2, the positioning element 610 is a positioning pin, the module frame 100 is provided with a positioning hole 140, and the positioning pin penetrates through the positioning hole 140, so that the positioning mode is simple and practical, and the positioning effect is good. In this embodiment, two positioning pins are respectively provided on any two opposite diagonal corners of the bottom surface of the case 600, two positioning holes 140 are correspondingly provided on the module frame 100, and each positioning pin plays a game through one positioning hole 140.

Preferably, be provided with a plurality of hoist and mount otic placodes 123 on the second U type support 120, a plurality of hoist and mount otic placodes 123 equipartitions are on the terminal surface that second U type support 120 deviates from electric core group 200, can conveniently place the module frame 100 that contains electric core group 200 in box 600 through the mode of hoist and mount of lifting device. Specifically, in this embodiment, one side that deviates from electric core group 200 at second U type support 120 is provided with four hoist and mount otic placodes 123, and four hoist and mount otic placodes 123 are the rectangle and distribute, can guarantee at the in-process of hoist and mount, and whole module frame 100 atress is balanced, and messenger's locating hole 140 that can be better assembles with the locating pin, improves the assembly efficiency of module frame 100 and box 600.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement or 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. A battery module, comprising:

the module frame (100) comprises a first U-shaped support (110) and a second U-shaped support (120), openings of the first U-shaped support (110) and the second U-shaped support (120) are oppositely arranged, and the first U-shaped support (110) and the second U-shaped support (120) jointly enclose an accommodating space (130);

the electric core group (200) is arranged in the accommodating space (130);

the locking piece is configured to lock and fix the first U-shaped bracket (110) and the second U-shaped bracket (120) so as to apply pre-tightening force to the electric core group (200).

2. The battery module according to claim 1, wherein first assembly holes (111) are respectively formed in two ends of the first U-shaped bracket (110), second assembly holes (121) are respectively formed in two ends of the second U-shaped bracket (120), the second assembly holes (121) correspond to the first assembly holes (111), the locking member comprises pre-tightening bolts (300), the pre-tightening bolts (300) sequentially penetrate through the first assembly holes (111) and the second assembly holes (121), and the pre-tightening bolts (300) are configured to apply pre-tightening force to the electric core assembly (200).

3. The battery module according to claim 1, wherein the second U-shaped bracket (120) is provided with a plurality of reinforcing ribs (122) in both the first direction and the second direction.

4. The battery module according to claim 1, wherein a buffer plate (400) is disposed between the electric core pack (200) and the first and second U-shaped brackets (110, 120).

5. The battery module according to claim 1, wherein the battery pack (200) comprises a plurality of battery cells (210) arranged in sequence, and an insulating plate (500) is arranged between two adjacent battery cells (210).

6. The battery module according to claim 5, wherein the insulating plate (500) is a PP plate.

7. The battery module according to claim 1, further comprising a case (600), wherein the case (600) is detachably connected to the module frame (100).

8. The battery module according to claim 7, wherein a positioning member (610) is provided in the case (600), the positioning member (610) being configured to position the module frame (100).

9. The battery module according to claim 8, wherein the positioning member (610) is a positioning pin, and the module frame (100) is provided with a positioning hole (140), and the positioning pin is inserted into the positioning hole (140).

10. The battery module according to any one of claims 1-9, wherein the second U-shaped bracket (120) is provided with a plurality of lifting lugs (123), and the plurality of lifting lugs (123) are uniformly distributed on the end surface of the second U-shaped bracket (120) facing away from the electric core assembly (200).