CN219677428U - Module end plate, battery module and battery pack - Google Patents

Abstract

The utility model belongs to the technical field of batteries, and discloses a module end plate, a battery module and a battery pack. The module end plate is used for a battery module with a packing belt and comprises an end plate body and a fixing piece, wherein the packing belt can be in limit connection with the end plate body, and the end plate body is provided with a fixing hole; the fixing piece is arranged in the fixing hole in a penetrating mode, any side face of the fixing piece along the first direction can be abutted to the packing belt, and the fixing piece can apply pressure along the first direction to the packing belt so that the packing belt deforms along the first direction. The module end plate has a simple structure, is easy to install, is more stable and reliable when the battery module is bundled by using the packing belt, and can improve the use safety and reliability of the battery module using the module end plate.

Description

Module end plate, battery module and battery pack

Technical Field

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

Background

The common battery module support structure comprises end plates, side plates, cover plates and other parts, and the manufacturing materials of the parts comprise metal plates, aluminum profiles, resin, plastics and the like.

In the prior art, the module support structure of the end plate and the packing belt has fewer parts and simpler structure, and the end plate of the module support is generally made of aluminum alloy sections, and the packing belt is generally made of steel belts or plastic steel belts. The steel belt has good performance, but has high cost, and a corresponding extrusion tool is required to be matched; the plastic steel belt has general performance, but is low in cost, and only needs to be matched with a common packing tool. However, when packing up the plastic steel area to the battery module with the baling press, need alternate the plastic steel area in the splint of baling press, after the baling press finishes and take out the splint of baling press, the baling belt can produce certain gap around with the battery module, causes the pretightning degree of whole module to descend, can lead to the battery module to appear beating and rocking the phenomenon in work and use when serious, influences the safety in utilization of battery module.

Therefore, there is a need to develop a module end plate to solve the above-mentioned technical problems of the battery module.

Disclosure of Invention

The utility model aims to provide a module end plate which is simple in structure, easy to install, more stable and reliable when a packing belt is used for bundling a battery module, applicable to different kinds of packing belts and capable of improving the use safety and reliability of the battery module.

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

the module end plate is used for a battery module with a packing belt and comprises an end plate body and a fixing piece, wherein the packing belt can be in limit connection with the end plate body, and the end plate body is provided with a fixing hole; the fixing piece is arranged in the fixing hole in a penetrating mode, any side face of the fixing piece along the first direction can be abutted to the packing belt, and the fixing piece can apply pressure along the first direction to the packing belt so that the packing belt deforms along the first direction.

Optionally, the fixing member is provided with a protruding portion protruding from any side surface along the first direction, and the protruding portion can be abutted against the packing belt.

Optionally, the end plate body is further provided with a limiting blind hole opposite to the fixing hole, and the end part of the fixing piece is matched with the limiting blind hole.

Optionally, a piece taking groove is formed at one end of the fixing hole far away from the limiting blind hole.

Optionally, a limiting boss is disposed at one end of the fixing member, which is close to the member taking slot.

Optionally, the end plate body is provided with a clamping groove, and the clamping groove is used for clamping and limiting the packing belt.

Optionally, the end plate body is further concavely provided with a mounting groove, and the fixing hole is formed in an inner side wall surface of the mounting groove.

Optionally, a lifting structure for carrying and extracting is arranged in the mounting groove.

Another object of the present utility model is to provide a battery module including the battery module according to any one of the above aspects.

It is still another object of the present utility model to provide a battery pack including the battery module according to the above aspect.

The beneficial effects are that:

the module end plate is used in the battery module with the fixed combination of the packing belt and the end plate body, after the packing belt finishes binding the end plate body and a plurality of battery cell bodies in the battery module, the fixing piece penetrates into the fixing hole and applies pressure along the first direction to the packing belt, so that the packing belt deforms along the first direction, redundant parts generated when the packing belt is bound by the packing machine are stretched and tensioned, and the packing belt is tensioned and fixed. When the battery module is fixed in a mode of using the end plate body and the packing belt, the structure is simple, the installation is easy, the production cost is reduced, the fixing piece can be used for pressing and stretching the packing belt when the battery module is bound, the fixing effect is more stable and reliable, the battery module is suitable for different kinds of packing belts, and the use safety and reliability of the battery module are improved.

Drawings

FIG. 1 is a schematic view of a packing belt according to an embodiment of the present utility model;

fig. 2 is an isometric view of a battery module according to an embodiment of the present utility model;

fig. 3 is an isometric view of a battery module according to an embodiment of the present utility model without a fixing member installed;

fig. 4 is an isometric view of a modular end plate according to an embodiment of the present utility model.

In the figure:

10. a cell body; 100. a cell array;

200. an end plate body; 210. a clamping groove; 211. a groove portion; 220. a fixing hole; 221. a piece taking groove; 230. limiting blind holes; 240. a mounting groove; 241. a hoisting structure; 251. reinforcing ribs; 252. a mounting hole;

300. a fixing member; 310. a limit boss;

400. packing belt.

Detailed Description

The utility model is described in further detail below with reference to the 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 thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the 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.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The first direction in this embodiment is the X direction shown in fig. 2, that is, the thickness direction of the cell body 10; the second direction is the Y direction shown in fig. 2 and 4, that is, the width direction of the cell body 10; the third direction is the Z direction shown in fig. 2 and 4, i.e., the height direction and the vertical direction of the cell body 10; the first direction, the second direction and the third direction are perpendicular to each other.

Referring to fig. 1, a schematic diagram of the packing belt 400 in this embodiment being pressed or pulled is shown in fig. 1. Due to the fixing member 300, when the fixing member 300 is positioned at the outer side of the strapping band 400, the strapping band 400 can be compressed inward, so that the strapping band 400 is deformed and compressed; when the fixing member 300 is positioned inside the strapping band 400, the strapping band 400 can be lifted up and deformed so that the strapping band 400 is tensioned. Therefore, the fixing member is arranged to enable the packing belt 400 to more firmly bind the battery module, so that the stability of installation is improved. The first way in which the fastener 300 is outside the strapping band 400 in fig. 1 is described in this embodiment.

Referring to fig. 2 and 4, in the present embodiment, the module end plate is used for a battery module having a packing belt 400, and includes an end plate body 200 and a fixing member 300, wherein the packing belt 400 can be limited and connected to the end plate body 200, and the end plate body 200 is provided with a fixing hole 220; the fixing member 300 is inserted into the fixing hole 220, any side surface of the fixing member 300 along a first direction may be abutted against the packing belt 400, and the fixing member 300 may apply pressure along the first direction to the packing belt 400 to deform the packing belt 400 along the first direction.

Specifically, in the battery module assembled and fixed by the packing belt 400, after the packing belt 400 binds the end plate body 200 and the plurality of battery cell bodies 10 inside the battery module, the fixing member 300 penetrates from the fixing hole 220 and applies pressure along the first direction to the packing belt 400, so that the packing belt 400 is deformed along the direction close to the end plate body 100, and the redundant portion generated when the packing belt 400 is bound by the packer is stretched and compressed, thereby the packing belt 400 is compressed and fixed. When the battery module is fixed by combining the end plate body 200 and the packing belt 400, the structure is simple, the installation is easy, the production cost is reduced, the packing belt 400 can be pressed and stretched by the fixing piece 300 when the battery module is bound, the fixing effect is more stable and reliable, the battery module is suitable for different kinds of packing belts 400, and the use safety and reliability of the battery module are improved.

Referring to fig. 4, the end plate body 200 is provided with a clamping groove 210, and the clamping groove 210 is used for clamping and limiting the packing belt 400. As a preferred embodiment, the plurality of the clamping grooves 210 and the packing belt 400 are provided in one-to-one correspondence. Specifically, two clamping grooves 210 and two strapping bands 400 are provided in this embodiment. The arrangement of the plurality of packing belts 400 can further improve the mounting stability of the battery module, and improve the safety and reliability of the battery module.

Optionally, the fixing member 300 is provided with a protruding portion protruding from any side surface along the first direction, in this embodiment, the protruding portion is located on a side surface of the fixing member 300 near the cell array 100, that is, the protruding portion is located on a back surface of the fixing member 300 in fig. 3, the protruding portion has an arc surface, and the thickness of the protruding portion increases first and then decreases along the second direction, which is not shown here, and the protruding portion can be abutted against the packing belt 400. The strapping band 400 is compressed by the protrusions to be deformed, which can provide greater pressure, so that the strapping band 400 is tensioned more effectively.

Specifically, the clamping groove 210 includes a groove portion 211 that is further concavely provided and matched with the protruding portion, the groove portion 211 is an arc-shaped surface groove that is matched with the protruding portion, the fixing hole 220 is opened along the third direction and is communicated with the clamping groove 210, and the fixing piece 300 is inserted into the fixing hole 220; when the packing belt 400 is accommodated in the clamping groove 210 and surrounds the side wall of the cell array 100, the packing belt 400 is clamped between the groove 211 and the protrusion, so that the packing belt 400 is pressed and fixed.

Optionally, the end plate body 200 is further provided with a limiting blind hole 230 opposite to the fixing hole 220, and an end of the fixing member 300 is disposed in the limiting blind hole 230 in a matching manner. That is, the fixing member 300 is mounted through the fixing hole 220 in cooperation with the groove portion 211, and at this time, the end portion of the fixing member 300 extends into the limiting blind hole 230, so that both ends of the fixing member 300 are fixed, the fixing manner is more stable and reliable, and the limiting blind hole 230 has a blind hole structure, so that the fixing member 300 is prevented from being inserted too deeply, and the battery module is difficult to detach and maintain due to inconvenient removal of the fixing member 300.

Specifically, referring to fig. 2 and 3, the packing belt 400 used in the present embodiment is a flexible packing belt, specifically a PP packing belt or a PET packing belt, and in the present embodiment, the PET packing belt 400, that is, a plastic steel packing belt is selected. Referring to fig. 3, when the battery module is packed by using the plastic-steel packing belt, a length redundancy occurs in the plastic-steel packing belt, so that the packing belt 400 cannot be completely adhered to and fastened to the cell array 100, and as shown in fig. 2, after the fixing member 300 is inserted into the fixing hole 220 and is matched with the groove portion 211, the packing belt 400 is pressed into the groove portion 211 by the fixing member 300, so that the packing belt 400 is stretched to be in a tensioned state, and the packing belt 400 can fasten and fix the cell array 100.

Further, the hot-melt connection part surrounded by the packing belt 400 is located at the groove part 211, and the fixing member 300 and the groove part 211 are matched to provide a certain pressure for the hot-melt connection part, so that the shearing force of the hot-melt connection part is increased, and the risk of fracture of the hot-melt connection part caused by movement of the battery module during transportation of the battery module is reduced.

With continued reference to fig. 4, in this embodiment, optionally, a pick-up slot 221 is formed at an end of the fixing hole 220 away from the limiting blind hole 230. The member taking groove 221 is a circular arc groove, which is convenient for an operator to take out the fixing member 300 from the fixing hole 220, and will not be described herein.

Further, a limiting boss 310 is disposed at one end of the fixing member 300 near the picking slot 221. The limiting boss 310 facilitates the operator to take out the fixing member 300 from the fixing hole 220, facilitates the later disassembly and maintenance, and plays a limiting role to prevent the fixing member 300 from being too deeply inserted into the fixing hole 220 to be taken out.

In a preferred embodiment, the end plate body 200 is further provided with a mounting groove 240, and the fixing hole 220 is formed in an inner sidewall surface of the mounting groove 240. Specifically, the mounting groove 240 is concavely formed between two adjacent clamping grooves 210, and the fixing hole 220 is formed in the inner lower sidewall surface of the mounting groove 240. Through setting up the opening of fixed orifices 220 in the inside lower wall surface of mounting groove 240, can realize that all mounting 300 are from top to bottom in inserting fixed orifices 220, not only make the installation of mounting 300 unified, be convenient for batch production, still make the battery module be difficult for falling from in the fixed orifices 220 when placing and installing with the mode that is shown in fig. 2 and 3, further improve the stability of installation.

As shown in fig. 4, a lifting structure 241 for carrying and extracting is provided in the mounting groove 240 in this embodiment. In this embodiment, the lifting structure 241 is two lifting holes, so that the external tool is convenient to be matched with the lifting holes, and the battery module is lifted and carried.

In a preferred embodiment, the end plate body 200 has a hollow cavity in which the reinforcing ribs 251 are disposed. The end plate body 200 having the hollow inner cavity is lighter in weight, and can improve the energy density of the battery module, the reinforcing ribs 251 can improve the mechanical strength of the hollow inner cavity, and the reinforcing ribs 251 are provided with a plurality of reinforcing ribs, the number, thickness and shape structures of which are conventional in the art, and are not described herein.

Optionally, mounting holes 252 disposed along the third direction are formed at two ends of the end plate body 200 along the second direction, for inserting connectors such as screws therein, so as to fix the battery module on an external device, which will not be described herein.

The embodiment also provides a battery module, which includes the module end plate according to any one of the above schemes. As shown in fig. 2, the battery module includes a battery cell array 100, an end plate body 200, a fixing member 300, and a packing belt 400, the battery cell array 100 including a plurality of battery cell bodies 10 stacked in a first direction; the end plate body 200 is disposed at one end of the cell array 100 along the first direction. Specifically, after stacking the battery cell bodies 10 into the battery cell array 100, at least one end of the battery cell array 100 is provided with an end plate body 200, specifically, in this embodiment, two module end plates are provided, and the two module end plates are respectively provided at two ends of the battery cell array 100 in the stacking direction; the end plate body 200 is provided with a clamping groove 210, and the packing belt 400 is accommodated in the clamping groove 210 and is arranged around the outer wall of the cell array 100, so that the cell array 100 is bundled and fixed.

The following describes the packaging process of the battery module in this embodiment in detail:

firstly, arranging the battery cell bodies 10 into a battery cell array 100 according to a design process mode; then, two end plate bodies 200 are respectively arranged at two ends of the cell array 100 according to a design process mode; then the packing belt 400 is placed at the position of the clamping groove 210, and the periphery of the battery module is bound and bundled; then, the positions of the two ends of the packing belt 400 are adjusted so that the hot melt connection part of the packing belt 400 is positioned at the central position of the groove part 211 on the clamping groove 210; then, inserting the two layers of packing belts 400 into clamping plates of the packing machine in parallel, and starting the packing machine to carry out hot melt bonding; finally, after the hot melting is finished, the packer is withdrawn, and the fixing members 300 are inserted into the fixing holes 220, respectively, so that the hot melting connection portion of the packing belt 400 is clamped between the groove portion 211 and the protruding portion of the fixing member 300.

The embodiment also provides a battery pack, which comprises the battery module set according to the scheme. The battery pack has the beneficial effects of the battery module and the module end plate according to any one of the above schemes, and the description is omitted here.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A module end plate for a battery module having a packing belt (400), comprising:

the packing belt (400) can be connected to the end plate body (200) in a limiting mode, and the end plate body (200) is provided with a fixing hole (220);

the fixing piece (300), the fixing piece (300) wears to locate in the fixed orifices (220), arbitrary side of fixing piece (300) along the first direction can the butt in packing area (400), fixing piece (300) can be to packing area (400) are exerted along the pressure of first direction, so that packing area (400) are along first direction takes place deformation.

2. The module end plate according to claim 1, characterized in that the fixing member (300) is provided with protruding parts protruding on either side in the first direction, which protruding parts can abut against the strapping band (400).

3. The module end plate according to claim 1, wherein the end plate body (200) is further provided with a limiting blind hole (230) opposite to the fixing hole (220), and an end portion of the fixing piece (300) is disposed in the limiting blind hole (230) in a matching manner.

4. A module end plate according to claim 3, characterized in that the end of the fixing hole (220) remote from the limit blind hole (230) is provided with a pick-up groove (221).

5. The module end plate according to claim 4, wherein a limiting boss (310) is provided at an end of the fixing member (300) adjacent to the member taking groove (221).

6. The module end plate according to claim 1, wherein the end plate body (200) is provided with a clamping groove (210), and the clamping groove (210) is used for clamping and limiting the packing belt (400).

7. The module end plate according to claim 1, wherein the end plate body (200) is further concavely provided with a mounting groove (240), and the fixing hole (220) is provided in an inner side wall surface of the mounting groove (240).

8. The module end plate according to claim 7, characterized in that the mounting groove (240) is provided with a lifting structure (241) for carrying and extracting.

9. Battery module, characterized in that it comprises a module end plate according to any one of claims 1-8.

10. A battery pack comprising the battery module according to claim 9.