CN215527850U - Battery module casing, battery module and battery package - Google Patents

Abstract

The utility model is suitable for the technical field of batteries, and provides a battery module shell, a battery module and a battery pack. The battery module casing includes: the battery pack comprises two oppositely arranged supporting plates, wherein each supporting plate comprises a tab support extending along a first direction and a bus bar fixed on the tab support; the lug support is also provided with a guide groove for a lug of the power supply core assembly to pass through; the two oppositely arranged side plates extend along a second direction intersecting with the first direction, and the side plates and the support plate enclose an accommodating space for accommodating the electric core assembly; wherein, curb plate and utmost point ear support are the plastic material, and the curb plate passes through buckle structure and connects in utmost point ear support. The battery module shell, the battery module and the battery pack are light in weight and low in cost.

Description

Battery module casing, battery module and battery package

Technical Field

The utility model belongs to the technical field of batteries, and particularly relates to a battery module shell, a battery module and a battery pack.

Background

At present, in the standard module and the big module scheme of laminate polymer core, structural parts such as drain pan, upper cover, backup pad, curb plate are usually included, and these structural parts all are the metalwork basically, so the weight of whole module is great, and manufacturing cost is higher.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery module shell, a battery module and a battery pack, which are used for reducing the weight and the manufacturing cost of the battery module.

An embodiment of the first aspect of the present invention provides a battery module case, including: the battery pack comprises two oppositely arranged supporting plates, wherein each supporting plate comprises a tab support extending along a first direction and a bus bar fixed on the tab support, one side of the tab support facing the battery pack is provided with an accommodating frame, and the accommodating frame is used for mounting the end part of the battery pack; the lug support is also provided with a guide groove for a lug of the power supply core assembly to pass through; the side plates are detachably connected to the tab support and extend along a second direction intersecting with the first direction.

The battery module shell comprises two supporting plates and two side plates so as to form an accommodating space for accommodating the battery module component; the side, facing the battery core assembly, of the lug support is provided with the containing frame, and the containing frame is used for installing the end part of the battery core assembly, so that the lug support can limit and support the battery core assembly without arranging an upper cover and a lower cover, and the weight of a battery module shell is reduced; because the side plates are detachably connected to the lug supports, the installation and the disassembly are convenient. Therefore, the battery module shell is simple in structure, convenient to assemble, light in weight and low in cost.

In one embodiment, the side plate and the tab support are both made of plastic materials, the side plate is connected to the tab support through a buckle structure, and the side plate comprises a main body part and two connecting parts arranged on two sides of the main body part;

the buckle structure comprises a first buckle piece and a buckle hole, the first buckle piece is arranged on one of the supporting plate and the connecting part, and the buckle hole is arranged on the other of the supporting plate and the connecting part.

Through adopting above-mentioned technical scheme, curb plate accessible connecting portion and backup pad buckle cooperation, the assembly is simple, stable in structure.

In one embodiment, the side plate further comprises a pair of side flanges, and the side flanges are connected to the side edges of the connecting part and extend towards the tab support;

the buckle structure further comprises a plurality of second buckle parts and a strip-shaped groove, the second buckle parts are sequentially arranged on the side turning edges, the strip-shaped groove is formed in the lug support and extends in the third direction perpendicular to the first direction and the second direction, and the second buckle parts are clamped in the strip-shaped groove.

Through adopting above-mentioned technical scheme, the bar groove can be held with a plurality of second buckle spare mutually simultaneously, further promotes the joint strength of curb plate and utmost point ear support.

In one embodiment, the end parts of the tab support are provided with a first mounting surface and a second mounting surface which are vertically connected, the second mounting surface is arranged in the middle of the tab support, and the first mounting surface extends to the top of the tab support from the second mounting surface along the third direction; the strip-shaped groove is arranged on the first mounting surface, and the side flanging is arranged above the second mounting surface and attached to the first mounting surface.

Through adopting above-mentioned technical scheme, first installation face and second installation face can play limiting displacement to the curb plate.

In one embodiment, a metal mounting sleeve is embedded in the tab support, the metal mounting sleeve comprises a cylindrical portion and mounting bosses arranged at two ends of the cylindrical portion, and mounting holes for mounting fasteners are formed in the mounting bosses; one of the mounting bosses is convexly arranged on the second mounting surface, and the other mounting boss is convexly arranged on the bottom surface of the tab support.

By adopting the technical scheme, the metal mounting sleeve can enhance the structural strength of the lug support and prevent the lug support made of plastic materials from deforming; the installation lug boss is exposed out of the surface of the lug support, so that the torsion attenuation caused when the fastener is installed can be avoided.

In one embodiment, the surface of the main body part facing the electric core assembly is parallel to the surface of the connecting part facing the tab support, and has a height difference, and the surface of the main body part facing the electric core assembly is adhered to the electric core assembly through an adhesive.

Through adopting above-mentioned technical scheme, the main part accessible viscose of curb plate is pasted in electric core subassembly, prevents not hard up, and simultaneously, the connecting portion laminating of curb plate in utmost point ear support has realized the fixed connection of curb plate with electric core subassembly and utmost point ear support.

In one embodiment, one side of the side plate, which is far away from the electric core assembly, is provided with a plurality of reinforcing ribs which are arranged in a staggered mode, and the top of the side plate further comprises an upward flanging extending towards the electric core assembly.

By adopting the technical scheme, the reinforcing ribs can enhance the strength of the side plates and prevent the side plates from deforming in the injection molding process; the rigidity of the side plate can be improved by the upward flanging

In an embodiment, the battery module casing further includes an insulating plate, the insulating plate is disposed on a side of the bus bar away from the tab holder, and the insulating plate is made of plastic material.

Through adopting above-mentioned technical scheme, the insulation board of plastic material has better insulating effect, need not paste extra insulating film again, and weight is lighter.

An embodiment of a second aspect of the present invention provides a battery module, including: the battery module housing according to any of the embodiments of the first aspect; and the battery core assembly is arranged in the battery module shell. Above-mentioned battery module accepts and fixes the electric core subassembly through the battery module casing, simple structure, and weight is lighter, the cost is lower.

An embodiment of the third aspect of the present invention provides a battery pack, including: the battery module according to the embodiment of the second aspect; and the battery box, the battery module is located in the battery box. The battery pack is simple in structure, light in weight and low in cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

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

fig. 2 is a partial perspective view of the battery module shown in fig. 1;

fig. 3 is a perspective view of a tab holder and a portion of a battery core assembly of the battery module shown in fig. 1;

fig. 4 is a partially exploded perspective view of the battery module shown in fig. 1;

fig. 5 is a perspective view illustrating a support plate in the battery module shown in fig. 1;

fig. 6 is a perspective view of the metal mounting sleeve in the support plate shown in fig. 5.

FIG. 7 is a perspective view of the side panel shown in FIG. 1;

FIG. 8 is a perspective view of the side plate shown in FIG. 7 at another angle;

fig. 9 is a schematic perspective view of a battery pack according to an embodiment of the present invention.

The designations in the figures mean:

100. a battery module housing;

10. a support plate; 11. a tab support; 111. an accommodating frame; 112. a guide groove; 113. a first mounting surface; 114. a second mounting surface; 12. a bus bar; 121. a first connection hole; 13. a metal mounting sleeve; 131. a cylindrical portion; 132. mounting a boss; 133. mounting holes;

20. a side plate; 21. a main body portion; 22. a connecting portion; 23. side flanging; 24. reinforcing ribs; 25. upward flanging;

31. a first fastener; 32. a snap-in hole; 33. a second fastener; 34. a strip-shaped groove;

40. an insulating plate; 41. a second connection hole;

200. an electrical core assembly;

300. a battery pack; 310. a battery box; 320. a cross member.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, which are examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; 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 by those skilled in the art according to specific situations.

To illustrate the technical solution of the present invention, the following description is made with reference to the specific drawings and examples.

An embodiment of the first aspect of the utility model provides a battery module housing for use in a battery module. Referring to fig. 1 to 3, the battery module case 100 includes two support plates 10 disposed opposite to each other and two side plates 20 disposed opposite to each other. Each support plate 10 includes a tab holder 11 extending in a first direction and a bus bar 12 fixed to the tab holder 11.

As shown in fig. 3, the side of the tab holder 11 facing the electric core assembly 200 is provided with an accommodating frame 111, and the accommodating frame 111 is used for mounting an end of the electric core assembly 200; the tab support 11 is further provided with a guide groove 112 for the tab of the power supply core assembly 200 to pass through. The guide groove 112 may be bar-shaped, but is not limited thereto.

The two side plates 20 extend in a second direction intersecting the first direction, the two side plates 20 and the two support plates 10 define a receiving space for receiving the electric core assembly 200, and the side plates 20 are detachably connected to the tab holder 11. Optionally, the first direction and the second direction may be perpendicular, in this embodiment, the first direction is an X direction, and the second direction is a Y direction; it will be appreciated that the first and second directions may be at other angles.

The battery module case 100 includes two support plates 10 and two side plates 20 to define an accommodating space for accommodating the battery cell assembly 200; one side of the tab support 11 facing the battery pack assembly 200 is provided with an accommodating frame 111, and the accommodating frame 111 is used for installing the end part of the battery pack assembly 200, so that the tab support 11 can limit and support the battery pack assembly 200 without an upper cover and a lower cover, thereby reducing the weight of the battery module shell 100; the tab holder 11 is provided with a guide groove 112 for the tab of the power supply core assembly 200 to pass through, so that the tab can pass through the guide groove 112 and be connected to the bus bar 12; and, the side plates 20 are detachably coupled to the tab holders 11, the above-described battery module case 100 is easily mounted and dismounted. Therefore, the battery module case 100 has a simple structure, is easy to assemble, and has a light weight and a low cost.

Referring to fig. 1 to 4, in an embodiment, the side plate 20 includes a main body 21 and two connecting portions 22 disposed at two sides of the main body 21; the two connecting portions 22 are located on both sides in the longitudinal direction of the main body portion 21. Curb plate 20 and utmost point ear support 11 are the plastic material, and curb plate 20 passes through buckle structure to be connected in utmost point ear support 11. It is to be understood that the material of the side plate 20 and the tab holder 11 is not limited to plastic, for example, the material of the side plate 20 and/or the tab holder 11 may also be metal or a composite of metal and plastic.

The fastening structure includes a first fastening member 31 and a fastening hole 32, the first fastening member 31 is disposed on one of the support plate 10 and the connecting portion 22, and the fastening hole 32 is disposed on the other of the support plate 10 and the connecting portion 22. Therefore, the side plate 20 can be snap-fitted with the support plate 10 through the connecting portion 22, and the assembly is simple and structurally stable. Specifically, in the present embodiment, the connecting portion 22 is provided with a plurality of fastening holes 32, the plurality of fastening holes 32 are sequentially arranged along a third direction perpendicular to the first direction and the second direction, the third direction is a height direction of the side plate 20, and in the present embodiment, is a Z direction; a plurality of first fastening members 31 are respectively disposed on two sides of the tab support 11, and the first fastening members 31 are respectively fastened in the corresponding fastening holes 32, so that the side plate 20 is fastened to the support plate 10. Since the plurality of first fasteners 31 and the plurality of fastening holes 32 are sequentially arranged along the third direction, the connection between the side plate 20 and the support plate 10 is stable. It can be understood that the number and the configuration position of the first fasteners 31 can be adjusted according to the requirement.

In one embodiment, the side plate 20 further includes a pair of side flanges 23, the side flanges 23 are connected to the sides of the connecting portion 22 and extend toward the tab support 11, and the side flanges 23 can enhance the strength of the side plate 20.

The buckle structure further comprises a plurality of second buckle parts 33 and a strip-shaped groove 34, the second buckle parts 33 are sequentially arranged on the side flanging 23, the strip-shaped groove 34 is arranged on the tab support 11 and extends along a third direction perpendicular to the first direction and the second direction, and the second buckle parts 33 are all clamped in the strip-shaped groove 34. Alternatively, the cross-section of the strip groove 34 may be square. The connection strength of the side plates 20 and the tab support 11 can be further improved by arranging a plurality of second fasteners 33 and strip-shaped grooves 34; moreover, the strip-shaped groove 34 is simple to open and can be clamped with the plurality of second fasteners 33 at the same time. Referring to fig. 4 and 5, in an embodiment, the end portion of the tab holder 11 has a first mounting surface 113 and a second mounting surface 114 connected vertically, the second mounting surface 114 is disposed at the middle portion of the tab holder 11, and the first mounting surface 113 extends from the second mounting surface 114 to the top of the tab holder 11 along a third direction; the strip-shaped groove 34 is arranged on the first mounting surface 113, and the side flange 23 is arranged above the second mounting surface 114 and attached to the first mounting surface 113.

The end of the tab support 11 is stepped, and the connecting part 22 of the side plate 20 is attached to the side surface of the tab support 11; the side flange 23 of the side plate 20 is disposed above the second mounting surface 114 and attached to the first mounting surface 113, so that the first mounting surface 113 and the second mounting surface 114 can limit the side plate 20. Optionally, the bottom of the side flange 23 may abut against the second mounting surface 114, thereby further enhancing the strength of the battery module housing 100.

In an embodiment, the tab support 11 is embedded with metal mounting sleeves 13, and optionally, the number of the metal mounting sleeves 13 is two and the two metal mounting sleeves are respectively disposed at two sides of the tab support 11 in the length direction.

Referring to fig. 6, the metal mounting sleeve 13 includes a cylindrical portion 131 and mounting bosses 132 disposed at two ends of the cylindrical portion 131, and the mounting bosses 132 are provided with mounting holes 133 for mounting fasteners. The metal mounting sleeve 13 can extend along the third direction, the metal mounting sleeve 13 can enhance the structural strength of the tab support 11, and when the metal mounting sleeve 13 is mounted, force is completely applied to the metal mounting sleeve 13, so that the tab support 11 made of plastic materials is prevented from deforming, and the mounting strength of the whole module is improved; also, the metal mounting sleeve 13 can prevent the tab holder 11 from being deformed during use; the mounting holes 133 in the mounting bosses 132 may be coupled to the battery pack case by fasteners, such as screws, to fix the battery module in the battery pack case.

Optionally, the metal mounting sleeve 13 is perforated along its axial direction, and the mounting hole 133 in the mounting boss 132 is located at an end of the perforated hole, so as to facilitate molding of the metal mounting sleeve 13.

Optionally, the metal mounting sleeve 13 is integrally formed with the tab holder 11 in an injection molding manner, so that the tab holder 11 has high structural strength and is convenient to manufacture.

Referring to fig. 2 to 5, the tab holder 11 is further provided with a mounting portion 115, the mounting portion 115 is used for mounting a bus bar, the mounting portion 115 and the guide groove 112 are arranged at intervals, in this embodiment, the number of the mounting portion 115 and the guide groove 112 is multiple and alternately arranged, the number of the bus bars 12 is multiple, and the multiple bus bars are respectively a positive bus bar, a negative bus bar and multiple bridging bus bars, and the multiple bridging bus bars are arranged between the positive bus bar and the negative bus bar at intervals on one side of the battery module frame 100.

In one embodiment, each mounting portion 115 includes a plurality of hollow-out grooves 1151, and the hollow-out grooves 1151 are blind grooves, so that the weight of the tab holder 11 can be reduced; the mounting portions 115 are connected to the corresponding bus bars 12 by heat-fusible posts provided on the hollowed-out grooves 1151. Referring to fig. 2, 5 and 6, in one embodiment, one mounting boss 132 is protruded on the second mounting surface 114, and the other mounting boss 132 is protruded on the bottom surface of the tab holder 11. Since the mounting holes 133 in the mounting bosses 132 are used for mounting the fasteners, the mounting bosses 132 are exposed out of the surface of the tab holder 11, so that the torsion attenuation caused when the fasteners are mounted can be avoided; and, the direct and box bottom plate contact of installation boss 132, battery module utilizes two installation bosses 132 to be fixed with the box bottom plate, avoids adopting the large face to fix, can effectively prevent to take place the warpage phenomenon when the module is fixed because of box plane degree or battery module bottom plane degree is not enough.

Referring to fig. 1, 7 and 8, in an embodiment, a surface of the main body 21 facing the cell assembly 200 is parallel to a surface of the connecting portion 22 facing the tab holder 11 with a height difference, and a surface of the main body 21 facing the cell assembly 200 is adhered to the cell assembly 200 by an adhesive. It is understood that the surface of the body portion 21 may be higher than the surface of the connection portion 22, but is not limited thereto. Through adopting above-mentioned technical scheme, main part 21 accessible viscose of curb plate 20 is pasted in electric core subassembly 200, prevents not hard up, and simultaneously, the connecting portion 22 of curb plate 20 is laminated in utmost point ear support 11, has realized curb plate 20 and electric core subassembly 200 and utmost point ear support 11's fixed connection.

In one embodiment, a plurality of reinforcing ribs 24 are arranged in a staggered manner on one side of the side plate 20 away from the electric core assembly 200, and the reinforcing ribs 24 can enhance the strength of the side plate 20 and prevent the side plate 20 from deforming in the injection molding process; the top of the side plate 20 may further include an upper flange 25 extending toward the electric core assembly 200, and the upper flange 25 may increase the rigidity of the side plate 20.

In an embodiment, the battery module housing 100 further includes an insulating plate 40, the insulating plate 40 is disposed on a side of the bus bar 12 away from the tab holder 11, and the insulating plate 40 is made of plastic. The insulating plate 40 made of the plastic material has a good insulating effect; in addition, the tab support 11, the side plate 20 and the insulating plate 40 in the battery module housing 100 are made of plastic materials, so that the weight is light. In other embodiments, the insulating plate 40 may be made of other materials and an insulating film may be attached to achieve the insulating effect. The insulating plates 40 are end plates of the battery module case 100.

In the present embodiment, the number of the insulating plates 40 is two, and the insulating plates are respectively connected to the bus bars 12 on both sides of the battery module case 100.

In one embodiment, the bus bar 12 is provided with a first connection hole 121; the insulating plate 40 is provided with second connection holes 41 to connect the insulating plate 40 to the bus bar 12 by connectors perforated in the first connection holes 121 and the second connection holes 41.

The battery module case 100 of the above embodiment includes the support plates 10, the side plates 20, and the insulating plates 40 without providing the upper and lower covers, and has fewer components, lighter weight, and lower cost.

A second aspect of the present invention provides a battery module 1, which includes a battery module housing 100 as in the first aspect, and a battery core assembly 200, wherein the battery core assembly 200 is disposed in the battery module housing 100.

The assembly process of the above battery module 1 is as follows. Firstly, assembling the electric core assembly 200, then respectively placing the two tab supports 11 at two ends of the electric core assembly 200, so that the accommodating frames 111 of the tab supports 11 accommodate and bear the end parts of the electric core assembly 200, and further the two tab supports 11 can bear the weight of the electric core assembly 200; a plurality of bus bars 12 are connected to one side of the tab support 11 away from the electric core assembly 200 in a hot melting mode, the tabs of the electric core assembly 200 penetrate through the guide grooves 112 of the tab support 11, and are welded on the corresponding bus bars 12 after being bent, and then the insulation plate 40 is connected to the bus bars 12. Then, spraying adhesive on the main body part 21 of the side plate 20, connecting the two side plates 20 to the support plate 10 through the snap structure, and simultaneously adhering the main body part 21 of the side plate 20 to the cell assembly 200, thereby completing the assembly of the battery module. It should be understood that the assembly sequence of the electric holding module 1 is not limited thereto, and the sequence can be adjusted according to the requirement.

The battery module 1 receives and fixes the core assembly 200 through the battery module case 100, and has a simple structure, light weight, and low cost.

Referring to fig. 9, the embodiment of the third aspect of the present invention further provides a battery pack 300, which includes the battery module according to the second aspect, and a battery box 310, wherein the battery module is disposed in the battery box 310. The battery case 310 includes a frame body and a bottom plate, and the frame body is mounted on an edge of the bottom plate. The battery pack 300 has a simple structure, light weight and low cost.

In the present embodiment, the number of the battery modules is multiple, and the multiple battery modules are arranged in the battery box 310, and optionally, the multiple battery modules are arranged in two rows, but not limited thereto. Wherein each battery module is fixed to the bottom of the battery case 310, i.e., to the bottom plate, by a metal mounting sleeve 13.

The battery pack 300 further includes a plurality of cross members 320, each of the cross members 320 being disposed between adjacent battery modules, being disposed adjacent to the side plates 20 of the battery module case 100, and extending along the length direction of the side plates 20. The cross beam 320 can reinforce the strength of the battery module case 100, and can play a limiting role in the battery module, preventing the battery module from expanding and deforming. In the present embodiment, each of the cross beams 320 extends to opposite sides of the battery box 310, and four sets of battery modules are disposed between each two adjacent cross beams 320. It is understood that the arrangement of the cross beam 320 is not limited thereto, and may be set according to the requirement.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (10)

1. A battery module housing, comprising:

the battery pack comprises two oppositely arranged supporting plates, wherein each supporting plate comprises a tab support extending along a first direction and a bus bar fixed on the tab support, one side of the tab support facing the battery pack is provided with an accommodating frame, and the accommodating frame is used for mounting the end part of the battery pack; the lug support is also provided with a guide groove for a lug of the power supply core assembly to pass through;

the side plates are detachably connected to the tab support and extend along a second direction intersecting with the first direction.

2. The battery module casing according to claim 1, wherein the side plates and the tab holders are made of plastic materials, the side plates are connected to the tab holders through a fastening structure, and the side plates comprise a main body part and two connecting parts arranged on two sides of the main body part;

the buckle structure comprises a first buckle piece and a buckle hole, the first buckle piece is arranged on one of the supporting plate and the connecting part, and the buckle hole is arranged on the other of the supporting plate and the connecting part.

3. The battery module housing of claim 2, wherein the side plates further comprise a pair of side flanges connected to the sides of the connecting portion and extending toward the tab holders;

the buckle structure further comprises a plurality of second buckle parts and a strip-shaped groove, the second buckle parts are sequentially arranged on the side turning edges, the strip-shaped groove is formed in the lug support and extends in the third direction perpendicular to the first direction and the second direction, and the second buckle parts are clamped in the strip-shaped groove.

4. The battery module housing of claim 3, wherein the ends of the tab holder have first and second mounting surfaces that are vertically connected, the second mounting surface being disposed in the middle of the tab holder, the first mounting surface extending from the second mounting surface in the third direction to the top of the tab holder; the strip-shaped groove is arranged on the first mounting surface, and the side flanging is arranged above the second mounting surface and attached to the first mounting surface.

5. The battery module housing as claimed in claim 4, wherein the tab holder is embedded with a metal mounting sleeve, the metal mounting sleeve comprises a cylindrical portion and mounting bosses provided at both ends of the cylindrical portion, and the mounting bosses are provided with mounting holes for mounting fasteners;

one of the mounting bosses is convexly arranged on the second mounting surface, and the other mounting boss is convexly arranged on the bottom surface of the tab support.

6. The battery module case according to any one of claims 2 to 5, wherein a surface of the main body part facing the cell assembly is parallel to a surface of the connection part facing the tab holder with a height difference, and the surface of the main body part facing the cell assembly is attached to the cell assembly by adhesive.

7. The battery module housing of any one of claims 1-5, wherein a side of the side plate facing away from the cell assembly is provided with a plurality of staggered ribs, and the top of the side plate further comprises a upturn extending toward the cell assembly.

8. The battery module housing of any of claims 1-5, further comprising an insulating plate disposed on a side of the buss bar facing away from the tab holder, wherein the insulating plate is made of plastic.

9. A battery module, comprising:

the battery module housing of any one of claims 1-8; and

the battery pack assembly is arranged in the battery module shell.

10. A battery pack, comprising:

the battery module according to claim 9; and

and the battery module is arranged in the battery box.

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