CN219937211U

CN219937211U - Battery pack

Info

Publication number: CN219937211U
Application number: CN202321054070.6U
Authority: CN
Inventors: 花黄伟
Original assignee: Xinwangda Power Technology Co ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2023-10-31
Anticipated expiration: 2033-05-05

Abstract

A battery pack relates to the technical field of power batteries and comprises a shell, a plurality of module support brackets and a plurality of battery modules which are arranged in a stacked manner along the vertical direction; the battery module is arranged in the shell; the battery module comprises two module end plates which are oppositely arranged along the length direction; the length direction intersects with the vertical direction; a plurality of module support brackets are connected between two adjacent battery modules along the vertical direction, and the plurality of module support brackets are distributed along the circumferential direction of the battery modules; the module support bracket comprises a support block and a support bracket body fixedly connected with the support block; along vertical direction, the supporting shoe is pegged graft on one or two battery module's among two adjacent battery modules module end plate, and the both ends of support frame body butt two adjacent battery module's module end plate respectively. The utility model aims to provide a battery pack so as to reduce the technical problems of weight, occupied space and cost of a battery module supporting structure to a certain extent.

Description

Battery pack

Technical Field

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

Background

With the development of electric automobiles, the whole battery pack gradually increases in overall size for improving the endurance of the whole automobile, namely, the demand for mass energy density; compared with the layout mode of the battery pack on the whole vehicle, the layout of the automobile chassis is the main development direction at present. However, in the chassis layout mode of the battery pack, in order to fully utilize the whole vehicle space, the shape of the battery pack is often shaped, and the problem of mounting and supporting the battery pack is required to be considered by using a double-layer or even multi-layer structure of the battery module; at the same time, the overall spatial position, as well as the structural strength, weight, cost, etc. of the support itself, also need to be considered.

The existing battery module support frame is an integral large support, the weight of the existing battery module support frame is relatively heavy, the occupied space is large, and the cost is high.

Disclosure of Invention

The utility model aims to provide a battery pack so as to reduce the technical problems of weight, occupied space and cost of a battery module supporting structure to a certain extent.

In order to achieve the above object, the present utility model provides the following technical solutions:

a battery pack comprises a shell, a plurality of module support brackets and a plurality of battery modules which are stacked along the vertical direction; the battery module is arranged in the shell;

the battery module comprises two module end plates which are oppositely arranged along the length direction; the length direction intersects the vertical direction;

a plurality of module support brackets are connected between two adjacent battery modules along the vertical direction, and the plurality of module support brackets are distributed along the circumferential direction of the battery modules;

the module support bracket comprises a support block and a support frame body fixedly connected with the support block; along vertical direction, the supporting shoe is pegged graft on adjacent two at least one module end plate in the battery module, the both ends of support frame body butt respectively two adjacent module end plates of battery module.

In any of the above technical solutions, optionally, the battery pack further includes a connecting member, and the connecting member connects the battery module, the module support bracket, and the housing.

In any of the above aspects, optionally, the housing includes a housing floor; the battery module is fixedly connected to the shell bottom plate through a connecting piece;

the support frame body is provided with a second communication hole; the axis of the second communication hole is parallel to the vertical direction; the connecting piece is inserted into the second communication hole and is connected with the shell bottom plate and the module end plate.

In any of the above technical solutions, optionally, at least part of the module support bracket is provided with a first communication hole that is matched with the connecting piece; the axis of the first communication hole is parallel to the vertical direction; the first communication hole penetrates through the support block and the support frame body;

the module support bracket, the battery module arranged by one or more layers below the module support bracket and the shell bottom plate are sequentially connected through the connecting piece.

In any of the above technical solutions, optionally, along the vertical direction, at least a part of the top of the support frame body is provided with a recess area, and a connection sheet body is provided at the bottom of the support frame body; the avoidance groove area extends to the side surface of the support frame body along the direction perpendicular to the vertical direction;

the connecting piece body is provided with a third communication hole; the axis of the third communication hole is parallel to the vertical direction;

In any of the above technical solutions, optionally, a reinforcing rib is connected between the support frame body and the connecting sheet body.

In any of the above embodiments, optionally, in a direction perpendicular to the axis of rotationOn the plane in the vertical direction, the projection area of all the module support brackets is S ₁ mm ² The projection area of the battery module is S ₂ mm ² S is 7% or less ₁ /S ₂ ≤15％。

In any of the above aspects, optionally, in a width direction of the battery module, the module support bracket has a size L ₁ mm, the size of the battery module is L ₂ mm is 15% or less ₁ /L ₂ ≤20％；

In the length direction of the battery module, the module support bracket has a dimension L ₃ mm, the size of the battery module is L ₄ mm, then 3% is less than or equal to L ₃ /L ₄ And the width direction, the length direction and the vertical direction are intersected in pairs and are less than or equal to 4 percent.

In any of the above solutions, optionally, at least a portion of the support frame body is provided with a tie hole; the axial direction of the strap-hole intersects the vertical direction.

In any of the above technical solutions, optionally, the number of module support brackets connected between two adjacent battery modules in the vertical direction is at least four, including a first module support bracket, a second module support bracket, a third module support bracket and a fourth module support bracket; the first module support bracket, the second module support bracket, the third module support bracket and the fourth module support bracket are sequentially arranged along the circumferential direction of the battery module;

the first module support bracket and the second module support bracket are connected with the module end plate at one end of the battery module, and the third module support bracket and the fourth module support bracket are connected with the module end plate at the other end of the battery module.

In any of the above technical solutions, optionally, at least part of the support frame body is provided with a support lug; the lugs protrude out of the periphery of the support frame body;

and the lugs are positioned on the periphery of the battery module along the direction vertical to the vertical direction.

The beneficial effects of the utility model are mainly as follows:

according to the battery pack, the plurality of module support brackets are arranged between two adjacent battery modules along the vertical direction, the support blocks of the module support brackets are inserted into the module end plates of one or two adjacent battery modules, and two ends of the support frame body are respectively abutted against the module end plates of the two adjacent battery modules, so that the module support brackets support the plurality of battery modules which are sequentially stacked along the vertical direction by adopting a distributed structure, the space occupation rate and the weight of the battery module support structure can be greatly reduced within a limited space range, and the cost of the battery module support structure is also reduced to a certain extent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

fig. 2 is a schematic structural view of a battery pack (not shown) according to an embodiment of the present utility model;

fig. 3 is another schematic structural view of a battery pack (not shown) according to an embodiment of the present utility model;

fig. 4 is an exploded view of the battery pack shown in fig. 3;

fig. 5 is a schematic structural diagram of a module support bracket according to an embodiment of the present utility model;

FIG. 6 is another view of the module support bracket of FIG. 5;

FIG. 7 is a schematic view of another structure of a module support bracket according to an embodiment of the present utility model;

fig. 8 is another view of the module support bracket shown in fig. 7.

Icon: 100-module support brackets; 101-a first module support bracket; 102-a second module support bracket; 103-a third module support bracket; 104-a fourth module support bracket; 110-supporting blocks; 120-a support frame body; 121-reinforcing ribs; 122-avoiding the groove region; 131-a first communication hole; 132-a second communication hole; 133-a third communication hole; 150-connecting sheet bodies; 160-tie holes; 170-supporting lugs; 200-battery module; 210-module end plates; 300-connectors; 400-a housing; 410-shell floor.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between 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 examples of the present application, "parallel" refers to a state in which the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is-1 ° to 1 °. The term "perpendicular" refers to a state in which the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is 89 ° to 91 °. The equal distance means a state where the tolerance range is-1%.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Examples

The present embodiment provides a battery pack; referring to fig. 1 to 8, fig. 1 is a schematic structural view of a battery pack according to the present embodiment, fig. 2 and 3 are two schematic structural views of the battery pack according to the present embodiment, a housing is not shown in the drawings, and fig. 4 is an exploded view of the battery pack shown in fig. 3 for more clearly showing the structure; fig. 5 and fig. 7 are schematic views of two structures of a module support bracket according to the present embodiment, in which fig. 6 is a schematic view of the module support bracket shown in fig. 5 from another perspective, and fig. 8 is a schematic view of the module support bracket shown in fig. 7 from another perspective.

Referring to fig. 1 to 8, the battery pack provided in the present embodiment includes a case 400, a plurality of module support brackets 100, and a plurality of battery modules 200 stacked in a vertical direction; the battery module 200 is fixedly coupled within the case 400.

The battery module 200 includes two module end plates 210 disposed opposite to each other in the length direction; the length direction intersects with the vertical direction; optionally, the length direction is perpendicular to the vertical direction. It can be appreciated that the battery module 200 may further include two side plates disposed opposite to each other in the width direction, and the two module end plates 210 and the two side plates enclose an installation space in which a plurality of unit batteries are disposed.

A plurality of module support brackets 100 are connected between two battery modules 200 adjacent in the vertical direction, and the plurality of module support brackets 100 are arranged along the circumferential direction of the battery modules 200. Alternatively, the number of module support brackets 100 is two, three, five, or eight, etc.; the specific number of the module support brackets 100 may be determined according to the shape, weight, volume, etc. of the battery module 200.

The module support bracket 100 comprises a support block 110 and a support frame body 120 fixedly connected with the support block 110; along the vertical direction, the support block 110 is inserted into one or both of the module end plates 210 of two adjacent battery modules 200, and both ends of the support frame body 120 are respectively abutted against the module end plates 210 of two adjacent battery modules 200. For example, the support block 110 is inserted in the vertical direction on the module end plate 210 of the upper battery module 200, or the support block 110 is inserted in the module end plate 210 of the lower battery module 200, or the support block 110 is inserted in both the upper battery module 200 and the module end plate 210 of the lower battery module 200. The module support brackets 100 are inserted into the module end plates 210 through the support blocks 110 so as to be mounted, thereby enabling the module support brackets 100 to be better mounted between the adjacent two battery modules 200.

In the battery pack of this embodiment, a plurality of module support brackets 100 are disposed between two adjacent battery modules 200 along the vertical direction, and the support blocks 110 of the module support brackets 100 are inserted into the module end plates 210 of one or two adjacent battery modules 200 among the two adjacent battery modules 200, and two ends of the support frame body 120 are respectively abutted against the module end plates 210 of the two adjacent battery modules 200, so that the module support brackets 100 support a plurality of battery modules 200 which are sequentially stacked along the vertical direction by adopting a distributed structure, the space occupation ratio and the weight of the battery module support structure can be greatly reduced within a limited space range, and the cost of the battery module support structure can be reduced to a certain extent.

Compared with an integral large module support, the module support 100 of this embodiment has advantages in terms of materials and weight due to the adoption of the distributed structure, the module support 100 is inserted into the module end plates 210 through the support blocks 110, two ends of the support frame body 120 are respectively abutted against the module end plates 210 of two adjacent battery modules 200, the occupied volume and weight of the module support 100 are reduced, and the module support 100 can be installed more conveniently. In addition, the module support bracket 100 according to the present embodiment is easy to satisfy strength and rigidity without considering the overall span, and has advantages in terms of raw material production cost, mold development cost, and the like.

Referring to fig. 1 and 5-8, in an alternative embodiment of the present utility model, the battery pack further includes a connector 300, and the connector 300 connects the module end plate 210, the module support bracket 100, and the housing 400. The module end plate 210, the module support bracket 100, and the housing 400 are connected by the connector 300.

Referring to fig. 1, 5-8, in an alternative to this embodiment, the housing 400 includes a housing floor 410; the battery module 200 is fixedly coupled to the case base 410 through the connection members 300, wherein the number of the connection members 300 may be plural. Specifically, the connector 300 connects the module end plate 210, the module support bracket 100, and the case bottom plate 410. Thus, by connecting the battery module 200 and the case 400 in the vertical direction, fixing members such as a tie can be omitted, parts and manufacturing costs can be reduced, and the versatility of the module support bracket 100 can be improved.

The support frame body 120 is provided with a second communication hole 132; the axis of the second communication hole 132 is parallel to the vertical direction; the connector 300 is inserted into the second communication hole 132 and connects the module end plate 210 and the case bottom plate 410. Through the second communication hole 132, the connection member 300 is conveniently inserted into the module support bracket 100 between two adjacent battery modules 200, thereby facilitating the connection of the connection member 300 to the battery modules 200 more firmly.

Alternatively, the connector 300 is, for example, a bolt, screw, rivet, or other component.

In this embodiment, the second communication hole 132 is a cylindrical hole, and in other embodiments, a square, diamond or other hole may be used.

Referring to fig. 3 to 6, in an alternative embodiment, at least a part of the module support bracket 100 is provided with a first communication hole 131 that mates with the connector 300; the axis of the first communication hole 131 is parallel to the vertical direction; the first communication hole 131 penetrates the support block 110 and the support frame body 120.

The module support bracket 100, one or more battery modules 200 positioned under the module support bracket 100 in a layered arrangement, and the case base plate 410 are sequentially connected by the connection member 300. The module support bracket 100, one or more battery modules 200 positioned under the module support bracket 100 and the case base 410 are stacked by providing a first communication hole 131 through at least a portion of the module support bracket 100 so that the connection member 300 connects the module support bracket 100.

Optionally, the first communication hole 131 is a counter bore; a counterbore is provided through the first communication hole 131 to accommodate the head end of the connector 300. For example, the head end of the connector 300 abuts against the module support bracket 100 and is disposed in the first communication hole 131, and the tail end of the connector 300 is fixedly connected to the bottom plate 410.

Optionally, at least a portion of the support bracket body 120 has strap holes 160 disposed thereon; the axial direction of the tie holes 160 intersects the vertical direction. Optionally, the axial direction of the tie-hole 160 is perpendicular to the vertical direction. The structural stability of the battery module 200 is further improved by the strap holes 160 to provide strap attachment points for other structural members. In addition, whether the module support bracket 100 is installed correctly can be determined according to the position of the strap hole 160, so as to avoid the cost increase caused by the reworking due to the installation error.

Referring to fig. 7 and 8, in an alternative scheme of the present embodiment, in a vertical direction, at least a portion of the top of the support frame body 120 is provided with a recess avoidance area 122, and a connection sheet 150 is provided at the bottom of the support frame body 120; the relief groove region 122 extends to a side of the support frame body 120 in a direction perpendicular to the vertical direction. By avoiding the groove region 122, the weight and cost of the module support bracket 100 are reduced to a certain extent, and meanwhile, the support bracket body 120 has more connection positions, so that the connection reliability is improved.

The connection sheet 150 is provided with a third communication hole 133; the axis of the third communication hole 133 is parallel to the vertical direction. The module support bracket 100, one or more battery modules 200 positioned under the module support bracket 100 in a layered arrangement, and the case base plate 410 are sequentially connected by the connection member 300. The connection member 300 is connected to the module support bracket 100, one or more battery modules 200 positioned under the module support bracket 100 in a stacked manner, and the case bottom plate 410 through the third communication hole 133.

Alternatively, the head end of the connector 300 abuts against the connection tab body 150, and the head end of the connector 300 is located in the avoidance groove region 122, and the tail end of the connector 300 is fixedly connected with the bottom shell plate 410.

Referring to fig. 7 and 8, in an alternative scheme of the present embodiment, a reinforcing rib 121 is connected between the supporting frame body 120 and the connecting sheet 150; the strength of the connection between the supporting frame body 120 and the connection sheet 150 is improved by the reinforcing ribs 121.

Optionally, tie holes 160 are provided on the reinforcing bars 121. The strap holes 160 are provided to provide strap attachment points for other structural members to further improve the structural reliability of the battery module 200. In addition, the correct installation of the modular support bracket 100 can be determined based on the location of the strap holes 160.

Referring to FIG. 4, the present embodiment canIn the alternative, on a plane perpendicular to the vertical direction, the projected area of all the module support brackets 100 along the vertical direction is S ₁ mm ² The projected area of the battery module 200 in the vertical direction is S ₂ mm ² S is 7% or less ₁ /S ₂ Less than or equal to 15 percent. For example, S ₁ /S ₂ 7%, 10%, 12%, 13% or 15%, etc.

Referring to fig. 4, in the alternative of the present embodiment, the single module support bracket 100 has a size L in the width direction of the battery module 200 ₁ mm, battery module 200 size L ₂ mm is 15% or less ₁ /L ₂ Less than or equal to 20 percent; for example, L ₁ /L ₂ 15%, 16.5%, 17%, 18% or 20%, etc.

Referring to fig. 4, in the alternative of the present embodiment, the single module support bracket 100 has a size L in the length direction of the battery module 200 ₃ mm, battery module 200 size L ₄ mm, then 3% is less than or equal to L ₃ /L ₄ Less than or equal to 4 percent. For example, L ₃ /L ₄ 3%, 3.2%, 3.5%, 3.8% or 4%, etc. Alternatively, the width direction intersects with the length direction and the vertical direction two by two.

In this embodiment, the size of the module support bracket 100 can be measured by using tools such as a caliper, a ruler, a tape measure, a 2D camera, and a 3D camera, and the size of the battery module 200 can be measured by using tools such as a ruler, a tape measure, a 2D camera, and a 3D camera.

In an alternative to this embodiment, the shape of the support block 110 is the same as at least part of the shape of the profile groove of the module end plate 210. The support block 110 is in a profiling structure, so that the module support bracket 100 is more convenient to install.

Optionally, at least part of the support blocks 110 of the module support bracket 100 have the same shape; alternatively, the shape of the support blocks 110 of all the module support brackets 100 is different.

Referring to fig. 1 to 4, in the alternative of the present embodiment, the number of module support brackets 100 connected between two adjacent battery modules 200 in the vertical direction is at least four, including a first module support bracket 101, a second module support bracket 102, a third module support bracket 103, and a fourth module support bracket 104; the first, second, third and fourth module support brackets 101, 102, 103 and 104 are sequentially disposed along the circumferential direction of the battery module 200, and specifically, are disposed at four corner positions of the battery module 200, respectively, to perform stable and effective support. For example, the number of module support brackets 100 connected between adjacent two battery modules 200 is four.

The first module support bracket 101 and the second module support bracket 102 are connected with a module end plate 210 at one end of the battery module 200, and the third module support bracket 103 and the fourth module support bracket 104 are connected with a module end plate 210 at the other end of the battery module 200. By adopting the first module support bracket 101, the second module support bracket 102, the third module support bracket 103 and the fourth module support bracket 104 to support and connect two adjacent battery modules 200, the two adjacent battery modules 200 can be supported better.

Referring to fig. 3-6, in an alternative embodiment, at least a portion of the support frame body 120 is provided with lugs 170; the lugs 170 protrude from the outer periphery of the support body 120. Through lugs 170 to provide a fixation point for other structural members. In addition, it can be determined whether the module support bracket 100 is installed correctly according to the position of the lugs 170.

Alternatively, the lugs 170 are located on the outer circumference of the battery module 200 in a direction perpendicular to the vertical direction. By providing lugs 170 on the outer circumference of the battery module 200, fixing points are provided for other structural members.

Alternatively, the module support bracket 100 is molded by die casting or machining, or otherwise.

Optionally, the module support bracket 100 is made of Al6061 (one of extruded aluminum alloys) or ADC12 (one of die-cast aluminum alloys), or other materials.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A battery pack characterized by comprising a housing (400), a plurality of module support brackets (100) and a plurality of battery modules (200) stacked in a vertical direction; the battery module (200) is arranged in the shell (400);

the battery module (200) includes two module end plates (210) disposed opposite to each other in a length direction; the length direction intersects the vertical direction;

a plurality of module support brackets (100) are connected between two adjacent battery modules (200) along the vertical direction, and the plurality of module support brackets (100) are distributed along the circumferential direction of the battery modules (200);

the module support bracket (100) comprises a support block (110) and a support frame body (120) fixedly connected with the support block (110); along the vertical direction, the supporting blocks (110) are inserted into at least one module end plate (210) in two adjacent battery modules (200), and two ends of the supporting frame body (120) are respectively abutted against the module end plates (210) of the two adjacent battery modules (200).

2. The battery pack of claim 1, further comprising a connector (300), the connector (300) connecting the module end plate (210), the module support bracket (100), and the housing (400).

3. The battery pack according to claim 2, wherein the housing (400) includes a housing floor (410);

the support frame body (120) is provided with a second communication hole (132); an axis of the second communication hole (132) is parallel to the vertical direction; the connecting piece (300) is inserted into the second communication hole (132) and connects the module end plate (210) and the case bottom plate (410).

4. A battery pack according to claim 3, wherein at least part of the module support bracket (100) is provided with a first communication hole (131) for being matched with the connecting piece (300); the axis of the first communication hole (131) is parallel to the vertical direction; the first communication hole (131) penetrates through the supporting block (110) and the supporting frame body (120);

the module support bracket (100), the battery module (200) and the case bottom plate (410) which are arranged in one or more layers below the module support bracket (100) are sequentially connected through the connecting piece (300).

5. A battery pack according to claim 3, wherein in the vertical direction, at least part of the support frame body (120) is provided with a recess area (122) for avoiding on the top, and a connection sheet body (150) is provided at the bottom of the support frame body (120); the avoidance groove region (122) extends to the side surface of the support frame body (120) along the direction perpendicular to the vertical direction;

the connecting sheet body (150) is provided with a third communication hole (133); an axis of the third communication hole (133) is parallel to the vertical direction;

6. The battery pack according to claim 5, wherein a reinforcing rib (121) is connected between the support frame body (120) and the connection sheet body (150).

7. The battery pack according to any one of claims 1 to 6, wherein a projected area of all the module support brackets (100) in the vertical direction on a plane perpendicular to the vertical direction is S ₁ mm ² The projection area of the battery module (200) along the vertical direction is S ₂ mm ² S is 7% or less ₁ /S ₂ ≤15％。

8. The battery pack according to any one of claims 1 to 6, wherein the module support bracket (100) has a dimension L in the width direction of the battery module (200) ₁ mm, the size of the battery module (200) is L ₂ mm is 15% or less ₁ /L ₂ ≤20％；

In the length direction of the battery module (200), the module support bracket (100) has a dimension L ₃ mm, the size of the battery module (200) is L ₄ mm, then 3% is less than or equal to L ₃ /L ₄ And the width direction is less than or equal to 4 percent, and the width direction is intersected with the length direction and the vertical direction in pairs.

9. The battery pack of any of claims 1-6, wherein at least a portion of the support frame body (120) has a strap hole (160) disposed thereon; the axial direction of the strap-hole (160) intersects the vertical direction.

10. The battery pack according to any one of claims 1 to 6, wherein the number of the module support brackets (100) connected between two adjacent battery modules (200) in the vertical direction is at least four, including a first module support bracket (101), a second module support bracket (102), a third module support bracket (103), and a fourth module support bracket (104); the first module support bracket (101), the second module support bracket (102), the third module support bracket (103) and the fourth module support bracket (104) are arranged along the circumferential direction of the battery module (200);

the first module support bracket (101) and the second module support bracket (102) are connected with the module end plate (210) at one end of the battery module (200), and the third module support bracket (103) and the fourth module support bracket (104) are connected with the module end plate (210) at the other end of the battery module (200).

11. The battery pack according to any one of claims 1-6, wherein lugs (170) are provided on at least part of the support frame body (120); the lugs (170) protrude out of the periphery of the support frame body (120);

the lugs (170) are located on the outer circumference of the battery module (200) in a direction perpendicular to the vertical direction.