CN220753649U - Battery module and battery pack - Google Patents

Abstract

The utility model discloses a battery module and a battery pack, wherein a first lifting hole penetrates through a side plate along the thickness direction of the side plate and extends into the middle plate from a small side surface in the middle plate connected with the side plate, so that the battery can be prevented from being contacted when the battery is lifted through the first lifting hole, and the battery is prevented from being scratched when the battery is lifted; and, because first lifting hole runs through the curb plate and extends to in the intermediate lamella for first lifting hole has certain degree of depth, has increased hoisting strength, and then avoids the hoisting position deformation when hoist and mount, thereby improves the security and the reliability of assembly process.

Description

Battery module and battery pack

Technical Field

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

Background

In order to meet the energy density requirement, the current battery module is continuously long, and in the related design, a middle plate is arranged at the middle part of the long module to connect adjacent battery packs so as to improve the overall structural strength of the long module. When the battery module is arranged in the box body to be assembled into a battery pack, the battery module needs to be hoisted into the box body, and in order to realize hoisting, a hoisting hole can be formed in the battery module, so that the design of how to arrange the hoisting hole, particularly the hoisting hole at the middle plate, is a technical problem to be solved by the person skilled in the art.

Disclosure of Invention

The embodiment of the utility model provides a battery module and a battery pack, which are used for realizing the arrangement of lifting holes, avoiding the scratch of a battery during lifting, improving the lifting strength and avoiding the deformation of lifting positions.

In a first aspect, an embodiment of the present utility model provides a battery module, including: two group batteries with fix the framework of group battery, every the group battery includes two at least batteries, the framework includes intermediate plate and curb plate, the intermediate plate is located adjacent two between the group battery, the intermediate plate includes: the battery pack comprises a small side face, a large side face, a top face and a bottom face, wherein the small side face and the large side face are both connected with the top face and the bottom face, the large side face faces the battery pack, the side plate is connected with the small side face, the frame body is provided with a first lifting hole, and the first lifting hole penetrates through the side plate in the thickness direction of the side plate and extends from the small side face connected with the side plate to the middle plate.

In a second aspect, an embodiment of the present utility model provides a battery pack including: the battery module is arranged in the box body.

The utility model has the following beneficial effects:

according to the battery module and the battery pack, the first lifting hole penetrates through the side plate along the thickness direction of the side plate and extends into the middle plate from the small side surface connected with the side plate, so that the battery can be prevented from being contacted when the battery is lifted through the first lifting hole, and the battery is prevented from being scratched when the battery is lifted; and, because first lifting hole runs through the curb plate and extends to in the intermediate lamella for first lifting hole has certain degree of depth, has increased hoisting strength, and then avoids hoisting position deformation when hoist and mount, thereby improves assembly process's security and reliability, and the curb plate need not to dodge first lifting hole and does extra design of dodging, need not extra excision curb plate body part promptly, has guaranteed the structural strength of curb plate.

Drawings

Fig. 1 is a schematic structural view of a battery module according to an embodiment of the present utility model;

FIG. 2 is an exploded schematic view of a middle panel and side panels provided in an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of a portion of the portion shown in the broken line circle of FIG. 1;

FIG. 4 is a schematic view of an intermediate plate according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a middle panel and side panels provided in an embodiment of the present utility model;

fig. 6 is a schematic structural view of another battery module according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a battery pack according to an embodiment of the present utility model.

Reference numerals:

10-battery pack, 20-frame, 21-middle plate, 21 a-communicating side wall, 22-side plate, 23-outer end plate, 31-first lifting hole, 32-second lifting hole, 40-fastener, 50-protection plate, 110-box, 120-battery module, k 1-groove, a 1-small side, a 2-large side, a 3-top surface and a 4-upper surface.

Detailed Description

A specific embodiment of a battery module and a battery pack according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings. It should be noted that the described embodiments are only some embodiments of the present utility model, and not all embodiments. 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.

An embodiment of the present utility model provides a battery module, as shown in fig. 1, which may include: at least two battery packs 10 and a frame 20 for fixing each battery pack 10, at least two batteries (not shown in fig. 1) are included in each battery pack 10, and the number of batteries included in each battery pack 10 may be the same or different, wherein the number of batteries included in each battery pack 10 may be set according to actual needs. It should be understood that one embodiment is shown in fig. 1 by way of example only, but in practice, the number of the battery packs 10 provided is not limited to two as shown in fig. 1.

The frame 20 includes a middle plate 21 and a side plate 22, and the middle plate 21 and the side plate 22 may be fixedly connected by welding, fastening, or bonding. The side plates 22 may be provided in two, and the two side plates 22 are disposed at both ends of the battery module along the width direction (i.e., the x-direction) of the battery module. The middle plate 21 is provided between the adjacent two battery packs 10, and the middle plate 21 may be provided with at least one; for example, when two battery packs 10 are provided, the intermediate plate 21 may be provided one, and the intermediate plate 21 is provided between the two battery packs 10, as shown in fig. 1; when the battery packs 10 are provided with two or more, the intermediate plates 21 are provided between any adjacent two of the battery packs 10, and at this time, the intermediate plates 21 may be provided with two or more, not shown, and the number of the intermediate plates 21 is the number of the battery packs 10 provided minus one. In this way, the respective battery packs 10 can be spaced apart by the intermediate plate 21, and the respective battery packs 10 can be fixed by the respective intermediate plate 21 and the side plate 22.

As shown in fig. 2, the intermediate plate 21 includes: the small side a1, the large side a2, the top surface a3 and the bottom surface are not shown in fig. 2 due to the view angle, but the bottom surface may be considered as a surface which is disposed corresponding to the top surface a3 along the z-direction in fig. 2 and is located at the bottom of the middle plate 21, the small side a1 and the large side a2 are both connected to the top surface a3 and the bottom surface, the large side a2 may face the battery pack, and the side plate 22 is connected to the small side a 1.

As shown in fig. 1 and 2, the frame 20 has a first hanging hole 31 therein, and the first hanging hole 31 penetrates the side plate 22 in the thickness direction of the side plate 22 (i.e., x direction shown in fig. 1) and extends from the small side surface a1 connected to the side plate 22 into the middle plate 21. It should be understood that, when two side plates 22 are provided, the first hanging hole 31 is provided at a position of each side plate 22 corresponding to the small side face a1 of the intermediate plate 21, only the first hanging hole 31 corresponding to one side plate 22 is shown in fig. 1 due to a problem of a view angle, but this does not mean that the other side plate 22 is not provided with the first hanging hole 31. So, because the first lifting hole 31 extends to the middle plate 21, so can make the first lifting hole 31 have certain degree of depth, increased hoisting strength, and then avoid the hoist and mount position deformation when hoist and mount, on the other hand hoist device can not contact the battery when getting into the first lifting hole 31, can avoid the fish tail battery when hoist and mount to improve the security and the reliability of assembly process.

In some embodiments, the depth of the portion of the first lifting hole 31 in the middle plate 21 (i.e., the length of the first lifting hole 31 in the middle plate 21 in the x-direction in fig. 1) may be set larger, or the portion of the first lifting hole 31 located in the middle plate 21 may be made into a special shape, such as a corresponding shape according to the lifting device design, so that the lifting device may be effectively inserted into the first lifting hole 31, thereby improving the lifting strength.

Of course, as shown in fig. 3, when the top surface a3 of the middle plate 21 is provided with the groove k1, the first lifting hole 31 can be communicated with the groove k1, so that the manufacturing difficulty of the first lifting hole 31 can be reduced, the lifting device can extend into the groove k1 through the first lifting hole 31, the inserting depth of the lifting device is increased, and the stability of the lifting process is improved.

Wherein the groove k1 may be used to receive the fastener 40, and the battery module may be fixed to other structures by the fastener 40. The provision of the recess k1 can prevent the fastener 40 from being higher than the top surface a3 of the middle plate 21, thereby facilitating the reduction of the height of the battery module and the volume of the battery module.

In addition, as shown in fig. 4, the side wall of the groove k1, which is communicated with the first lifting hole, is a communicating side wall 21a, and a notch (as shown in a broken coil k2 in fig. 4) is formed on the surface of the communicating side wall 21a facing the groove k1, and the notch can be used for avoiding the fastening piece 40, so that the convenience of installing the fastening piece 40 is improved, and the interference on the fastening piece 40 is reduced. The specific shape of the notch is not limited herein, and may be set according to factors such as the shape and the type of the fastener 40, and the structural strength, for example, the orthographic projection shape of the notch on a plane parallel to the top surface of the middle plate 21 may be set to be V-shaped (as shown in fig. 4), semicircular or semi-elliptical, so that the thickness of the communicating sidewall 21a may exhibit the characteristic that the middle is thin and the two sides are thick, which not only can avoid the fastener 40, but also can avoid the strength of the communicating sidewall 21a from being reduced.

In some embodiments, as shown in fig. 5, the side plate 22 completely blocks the small side surface a1 correspondingly connected to provide more fixing space for fixing the middle plate and the side plate 22, for example, when the small side surface a1 is adhered to the side plate 22, the side plate 22 completely blocks the small side surface a1 so that the whole small side surface a1 is adhered to the side plate 22, thereby improving the fixing strength of the middle plate and the side plate 22. Further, the ratio of the area of the small side a1 to the reference area may be set to 50% to 85%, wherein the reference area is: the product of the maximum height d1 of the side plate 22 and the thickness d2 of the intermediate plate. The reason for this is that: if the ratio of the area of the small side a1 to the reference area is too small, for example, less than 50%, it is indicated that the area for achieving the fixation of the small side a1 to the side plate 22 is small, and the side plate 22 may be broken due to the small fixation area when the side plate 22 is long; if the ratio of the area of the small side surface a1 to the reference area is too large, for example, more than 85%, the area of the small side surface a1 is larger and is close to the reference area, so that less space is provided for assembling the middle plate and other structures, and the assembling difficulty is increased; therefore, the ratio of the area of the small side surface a1 to the reference area is set in a proper range, so that the side plate 22 is prevented from being broken, the reliability of the side plate 22 is improved, more space is provided for assembly, and the assembly difficulty is reduced.

And, as shown in fig. 5, the side plates 22 may be provided with assembly notches at positions corresponding to the middle plates, as shown in the dotted line frame x1 and the dotted line frame x2, through which assembly spaces may be provided for the installation of the battery module and other structures, so as to reduce the difficulty of assembly. The arrangement of the mounting notches may be performed according to the mounting manner, and is not limited herein.

In some embodiments, referring to fig. 3, the surface of the side plate 22 facing the top of the battery module may be regarded as the upper surface a4 of the side plate 22, and the minimum distance d3 between the first hoist hole 31 and the upper surface a4 of the side plate 22 may be set to 8mm to 40mm, so that insufficient hoist strength may be prevented from being caused in the upper portion of the first hoist hole 31 (as shown in the dotted line box x3 in fig. 3) when d3 is excessively small, and deformation of the hoist position at the time of hoist may be prevented, thereby improving safety and reliability of the assembly process.

In some embodiments, referring to fig. 6, the frame may include an outer end plate 23 connected to the side plate 22 in addition to the middle plate 21 and the side plate 22, and the outer end plate 23 may be provided at an end of the battery module along the arrangement direction (e.g., y-direction in fig. 6) of the respective battery packs 10; the outer end plates 23 may be provided in two and are disposed at both ends of the battery module along the y-direction, and each battery pack 10 is surrounded in the middle by the two side plates 22 and the two outer end plates 23, thereby achieving the fixation of the battery pack 10. The side plate 22 may extend from one of the outer end plates to the side of the side plate 22 through the corresponding connected small side to the side of the other outer end plate facing the side plate 22, that is, the side plate 22 may be provided as an integral side plate 22, and the two outer end plates and the middle plate 21 may be connected through one side plate 22, so that the assembly process of the battery module may be simplified and the assembly efficiency of the battery module may be improved while the structure of the battery module is simplified.

And, the connection of the outer end plate 23 and the side plate 22 may be also provided with a first lifting hole 31 to provide a plurality of lifting sites, thereby improving the stability of the lifting process.

Further, as shown in fig. 6, a second lifting hole 32 may be formed in the surface of the outer end plate 23 perpendicular to the arrangement direction (e.g., y direction) of each battery pack 10 and facing away from the battery pack 10, and the second lifting hole 32 may be a blind hole or a through hole, and a protection plate 50 may be disposed between the outer end plate 23 and the battery pack 10 to block the battery pack 10 and the lifting device, so as to avoid scratching the battery pack 10 when the lifting device extends into the second lifting hole 32. And through the setting of second lifting hole 32 for battery module has a plurality of lifting holes, has further increased the hoisting locus, makes hoist device like this can hoist battery module from a plurality of angles, a plurality of positions, in order to improve the stability of hoist and mount.

It should be understood that the shapes of the first and second lifting holes 31 and 32 are not limited to those shown in fig. 6, and may be set according to the shape of the lifting device, etc., and are not limited thereto.

Based on the same inventive concept, an embodiment of the present utility model provides a battery pack, as shown in fig. 7, which may include a case 110 and a battery module 120 as described in the above, and the battery module 120 may be disposed in the case 110.

The box body can comprise a bottom plate and a beam, and the battery module can be fixed on the bottom plate and also can be fixed on the beam. And the battery module and the bottom plate or the battery module and the beam can be fixed by the fasteners arranged in the grooves of the middle plate. Of course, the end plates and/or the side plates can be fixed with the bottom plate or the beam through the fasteners, so that the fixing sites of the battery module and the box body are increased, and the stability of fixing the battery module in the box body is improved.

In some embodiments, the battery pack may further include other structures for implementing the functions of the battery pack, such as, but not limited to, a battery management system, a high-voltage distribution box, etc., in addition to the case and the battery module, and may be specifically configured according to actual needs, which is not limited herein.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. A battery module, comprising: at least two group battery with fix the framework of group battery, every the group battery includes at least two batteries, the framework includes intermediate plate and curb plate, the intermediate plate is located adjacent two between the group battery, the intermediate plate includes: the battery pack comprises a small side face, a large side face, a top face and a bottom face, wherein the small side face and the large side face are both connected with the top face and the bottom face, the large side face faces the battery pack, the side plate is connected with the small side face, the frame body is provided with a first lifting hole, and the first lifting hole penetrates through the side plate in the thickness direction of the side plate and extends from the small side face connected with the side plate to the middle plate.

2. The battery module of claim 1, wherein the side plates completely block the small sides of the corresponding connection.

3. The battery module according to claim 2, wherein the ratio of the area of the small side surface to a reference area is 50% to 85%, the reference area being: the product of the maximum height of the side plates and the thickness of the intermediate plate.

4. The battery module according to claim 1, wherein a minimum distance between the first hanging hole and a surface of the side plate facing the top of the battery module is 8mm to 40mm.

5. The battery module of claim 1, wherein the top surface of the middle plate has a recess for the placement of a fastener therein; the first lifting hole is communicated with the groove.

6. The battery module of claim 5, wherein the side wall of the groove, which is communicated with the first lifting hole, is a communicating side wall, and a notch is formed in the surface of the communicating side wall, which faces the groove, and is used for avoiding the fastener.

7. The battery module of claim 6, wherein the notch has a V-shape, a semicircular shape, or a semi-elliptical shape in an orthographic projection on a plane parallel to the top surface.

8. The battery module according to any one of claims 1 to 7, wherein the frame further comprises an outer end plate provided at an end of the battery module along the arrangement direction of the battery packs, and the side plate is further connected to the outer end plate.

9. The battery module according to claim 8, wherein the outer end plates are provided in two and are provided at both ends of each of the battery packs along the arrangement direction;

the side plates extend from the side of one of the outer end plates facing the side of the side plate, through the correspondingly connected small side, to the side of the other outer end plate facing the side plate.

10. A battery pack, comprising: a case and the battery module according to any one of claims 1 to 9, the battery module being provided in the case.