Battery module

Abstract

The utility model relates to the technical field of battery modules, and provides a battery module which comprises a battery cell, a non-metal shell with an accommodating cavity, a plastic partition plate and a first fastening mechanism, the plastic partition plates are arranged in the accommodating cavity and divide the accommodating cavity into a plurality of battery cabins; the plastic partition plate is detachably fixed to the inner wall of the containing cavity through a first fastening mechanism. And the battery cells are respectively arranged in the battery cabins.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery modules, and more specifically, relates to a battery module. Background Art

[0002] The battery pack is the core energy source of new energy vehicles, providing driving power for the entire vehicle. It is mainly composed of a shell envelope to form the main body of the battery pack. The battery pack mainly includes battery cells, shells and electrical systems. The battery pack shell is referred to as the battery shell. It is the carrier of the battery module and plays a key role in the safe operation and protection of the battery. The design mainly considers the material, surface corrosion protection, insulation treatment, strength and stiffness to ensure the battery's later service life and the shell's collision protection. Traditional new energy battery shell end plates and side plates are made of steel, which will lead to poor welding reliability between the end plates and side plates, poor connection reliability between the side plates and battery cells, and high cost. Utility Model Content

[0003] The purpose of the utility model is to provide a battery module to solve the technical problem in the prior art that aluminum alloy battery shells are difficult to weld when splicing.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a battery module, including: multiple battery cells, a non-metallic shell with a accommodating cavity, a plastic partition, and a first fastening mechanism; the plastic partition is arranged in the accommodating cavity and divides the accommodating cavity into multiple battery compartments; the plastic partition is detachably connected to the inner wall of the accommodating cavity through the first fastening mechanism; each of the battery compartments is respectively provided with at least one battery cell.

[0005] Furthermore, the outer surface of the plastic separator is concave to form a groove; the groove is filled with glue, and the plastic separator and the battery core are bonded by the glue; or

[0006] A first adhesive layer for bonding the battery cells in the battery compartment is provided on the outer side wall of the plastic partition.

[0007] Furthermore, a first reinforcing rib is arranged on the outer surface of the plastic partition.

[0008] Furthermore, the battery module also includes: a second fastening mechanism; the non-metallic shell includes: a first side plate, a first end plate, a second side plate, and a second end plate; the first side plate, the first end plate, the second side plate, and the second end plate are respectively fixedly connected end to end by the second fastening mechanism and enclosed to form the accommodating cavity.

[0009] Furthermore, one end of the plastic partition has a first flange and / or a first protrusion fixed on the inner wall of the first end plate, and the other end of the plastic partition has a second flange and / or a second protrusion fixed on the inner wall of the second end plate.

[0010] Furthermore, the second fastening mechanism is a first screw; the first side plate, the first end plate, the second side plate, and the second end plate are fixedly connected end to end in sequence by the first screw.

[0011] Furthermore, a first bracket is fixedly connected to the outer surface of the first side panel, and a second bracket is fixedly connected to the outer surface of the second side panel; the first side panel is located between the first bracket and the second bracket, and the second side panel is located between the first bracket and the second bracket.

[0012] Furthermore, the first bracket is in the shape of a plate arranged perpendicularly to the first side panel; the second bracket is in the shape of a plate arranged perpendicularly to the second side panel; the first bracket and the first side panel together form an L- or T-shaped structure, and the second bracket and the second side panel together form an L- or T-shaped structure; and / or

[0013] The surface of the first bracket is provided with a plurality of second reinforcing ribs arranged to intersect with each other; the surface of the second bracket is provided with a plurality of third reinforcing ribs arranged to intersect with each other.

[0014] Furthermore, a plurality of fourth reinforcing ribs are arranged on the outer surface of the first end plate, and the plurality of fourth reinforcing ribs are intersected to form a first intersection portion, and a first screw hole is provided on the first intersection portion; a plurality of fifth reinforcing ribs are arranged on the outer surface of the second end plate, and the plurality of fifth reinforcing ribs are intersected to form a second intersection portion, and a second screw hole is provided on the second intersection portion;

[0015] The first fastening mechanism includes: a second screw and a third screw; the second screw passes through the first screw hole and fixedly connects the plastic partition and the first end plate; the third screw passes through the second screw hole and fixedly connects the plastic partition and the second end plate.

[0016] Furthermore, the first intersection portion is cylindrical; the first screw hole extends along the axial direction of the first intersection portion, and the diameter of the first intersection portion is greater than the width of the fourth reinforcing rib; and / or

[0017] The second intersection portion is cylindrical; the second screw hole extends along the axial direction of the second intersection portion, and the diameter of the second intersection portion is greater than the width of the fifth reinforcing rib.

[0018] Furthermore, a second adhesive layer for bonding the multiple battery cells in the battery compartment is provided on the inner wall of the accommodating cavity.

[0019] Furthermore, the second adhesive layer is UV adhesive; the first adhesive layer is structural adhesive.

[0020] The beneficial effects of the battery module provided by the present invention are: compared with the prior art, the battery module provided by the present invention has a non-metallic shell with a accommodating cavity; a plastic partition is arranged in the accommodating cavity, and the plastic partition divides the accommodating cavity into a plurality of battery compartments for storing battery cells, and the battery cells can be arranged in the battery compartments; the plastic partition and the inner wall of the accommodating cavity are detachably fixedly connected by a first fastening mechanism, which is convenient for fixing or separating the plastic partition and the non-metallic shell; when the user removes the plastic partition, the plastic partition can be removed and separated from the non-metallic shell, which is very convenient; in addition, the non-metallic shell is made of non-metal, and non-metal has good thermal insulation and insulating effects; the plastic partition is made of plastic; the plastic material is easily bonded by glue, which is convenient for bonding the battery cells to the plastic partition or the non-metallic shell, and plastic has good thermal insulation and insulating effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 An exploded perspective schematic diagram of a battery module provided in an embodiment of the present invention;

[0023] Figure 2 A three-dimensional schematic diagram of a battery module provided by an embodiment of the present utility model;

[0024] Figure 3 for Figure 2 A in the middle is an enlarged schematic diagram;

[0025] Figure 4 A three-dimensional schematic diagram of a battery module provided by an embodiment of the present utility model;

[0026] Figure 5 A schematic top view of a battery module provided by an embodiment of the present utility model;

[0027] Figure 6 A three-dimensional assembly diagram of the first side panel and the first bracket provided in an embodiment of the present utility model;

[0028] Figure 7A three-dimensional assembly diagram of the second side plate and the second bracket provided in an embodiment of the utility model;

[0029] Figure 8 A front view of a first end plate provided in an embodiment of the present utility model.

[0030] Among them, the reference numerals in the figures are:

[0031] 1-non-metallic shell; 11-first side panel; 12-second side panel; 13-first end panel; 14-second end panel; 15-accommodating cavity; 151-battery compartment; 16-first fastening mechanism; 17-second fastening mechanism; 2-plastic partition; 21-groove; 22-second flange; 23-second protrusion; 24-first flange; 31-first bracket; 32-second bracket; 41-second adhesive layer; 42-first adhesive layer; 5-battery cell; 6-cover plate. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0034] It should be noted that, in the description of the embodiments of this application, unless otherwise specified, " / " represents the meaning of "or". For example, A / B can represent A or B. "And / or" in this article is only a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0037] Please also refer to Figures 1 to 8 The battery module provided by the present invention is now described. The battery module includes: multiple battery cells 5, a non-metallic housing 1 having a housing cavity 15, a plastic partition 2, and a first fastening mechanism 16. The plastic partition 2 is disposed within the housing cavity 15 and divides the housing cavity 15 into multiple battery compartments 151. The plastic partition 2 is detachably connected to the inner wall of the housing cavity 15 via the first fastening mechanism 16. Each battery compartment 151 contains at least one battery cell 5.

[0038] In this way, the non-metallic shell 1 has a accommodating cavity 15; the plastic partition 2 is arranged in the accommodating cavity 15, and the plastic partition 2 divides the accommodating cavity 15 into multiple battery compartments 151 for storing battery cells 5, and the battery cells 5 can be arranged in the battery compartments 151; the plastic partition 2 and the inner wall of the accommodating cavity 15 are detachably fixedly connected through a first fastening mechanism 16, which facilitates the fixation or separation between the plastic partition 2 and the non-metallic shell 1; when the user removes the plastic partition 2, the plastic partition 2 can be removed and separated from the non-metallic shell 1, which is very convenient.

[0039] In addition, the non-metallic shell 1 is made of non-metal, which has good thermal insulation and insulating effects; the plastic partition 2 is made of plastic; plastic materials are easily bonded with glue, making it convenient to bond the battery cell 5 to the plastic partition 2 or the non-metallic shell 1, and plastic has good thermal insulation and insulating effects.

[0040] In one embodiment, the battery cell 5 is covered with a cover plate 6 to reduce the impact of dust from above on the battery cell 5 .

[0041] In one embodiment, the battery cell 5 is a lithium battery.

[0042] In one embodiment, the non-metallic housing 1 is preferably made of plastic.

[0043] In one embodiment, the plastic can be any one of the following materials: polyethylene, polypropylene, high-density polyethylene, low-density polyethylene, linear low-density polyethylene, polyvinyl chloride, general-purpose polystyrene, polystyrene foam, high-impact polystyrene, styrene-acrylonitrile copolymer, acrylonitrile-butadiene-styrene copolymer, polymethacrylate, ethylene-vinyl acetate copolymer, polyethylene terephthalate, polybutylene terephthalate, polyamide, polycarbonate, polyoxymethylene, polyphenylene oxide, polyphenylene sulfide, polyurethane, polystyrene, polytetrafluoroethylene.

[0044] Further, see Figures 1 to 8 In one embodiment of the battery module provided by the present invention, the outer surface of the plastic separator 2 is recessed to form a groove 21. The groove 21 is filled with glue, and the plastic separator 2 and the battery cell 5 are bonded together by the glue. In this way, the battery cell 5 is firmly bonded to the plastic separator 2.

[0045] In one embodiment, a first adhesive layer 41 for bonding the battery cells 5 in the battery compartment 151 is provided on the outer sidewall of the plastic partition 2 . In this way, the battery cells 5 can be fixed to the plastic partition 2 through the first adhesive layer 41 .

[0046] Further, see Figures 1 to 8 As a specific embodiment of the battery module provided by the present invention, a first reinforcing rib is arranged on the outer surface of the plastic partition 2. In this way, the first reinforcing rib can improve the bending resistance of the plastic partition 2.

[0047] Further, see Figures 1 to 8 As a specific embodiment of the battery module provided by the present invention, the battery module also includes: a second fastening mechanism 17; the non-metallic shell 1 includes: a first side plate 11, a first end plate 13, a second side plate 12, and a second end plate 14; the first side plate 11, the first end plate 13, the second side plate 12, and the second end plate 14 are fixedly connected end to end in sequence by the second fastening mechanism 17 and enclosed to form a accommodating cavity 15. In this way, the first side plate 11, the first end plate 13, the second side plate 12, and the second end plate 14 are fixedly connected end to end in sequence, and the connection positions of any adjacent plates are fixed to each other by the second fastening mechanism 17; when splicing the non-metallic shell 1, it is only necessary to connect the first side plate 11, the first end plate 13, the second side plate 12, and the second end plate 14 end to end, and splicing the non-metallic shell 1 is very convenient.

[0048] Further, see Figures 1 to 8As a specific embodiment of the battery module provided by the present invention, one end of the plastic separator 2 has a first flange 24 and / or a first protrusion fixed to the inner wall of the first end plate 13, and the other end of the plastic separator 2 has a second flange 22 and / or a second protrusion 23 fixed to the inner wall of the second end plate 14. In this way, the plastic separator 2 can distribute stress to the first end plate 13 via the first flange 24 and / or the first protrusion; and the plastic separator 2 can distribute stress to the second end plate 14 via the second flange 22 and / or the second protrusion 23.

[0049] Further, see Figures 1 to 8 As a specific embodiment of the battery module provided by the present invention, the second fastening mechanism 17 is a first screw; the first side panel 11, the first end panel 13, the second side panel 12, and the second end panel 14 are fixedly connected end to end by the first screws in sequence. In this way, one end of the first side panel 11 is connected to one end of the first end panel 13 by the first screw, the other end of the first end panel 13 is connected to one end of the second side panel 12 by the first screw, the other end of the second side panel 12 is connected to one end of the second end panel 14 by the first screw, and the other end of the second end panel 14 is connected to the other end of the first side panel 11 by the first screw; the first side panel 11, the first end panel 13, the second side panel 12, and the second end panel 14 are fixed very firmly end to end.

[0050] In one embodiment, the first side panel 11, the first end panel 13, the second side panel 12, and the second end panel 14 are fixedly connected end to end by three second screws. In this way, the first side panel 11, the first end panel 13, the second side panel 12, and the second end panel 14 are fixed very firmly end to end.

[0051] Further, see Figures 1 to 8 As a specific embodiment of the battery module provided by the present invention, a first bracket 31 is fixedly connected to the outer surface of the first side plate 11, and a second bracket 32 ​​is fixedly connected to the outer surface of the second side plate 12. The first side plate 11 is located between the first bracket 31 and the second bracket 32, and the second side plate 12 is located between the first bracket 31 and the second bracket 32. In this way, the first bracket 31 and the second bracket 32 ​​can support the non-metallic housing 1 from both sides.

[0052] In one embodiment, the first bracket 31 is integrally formed with the first side panel 11, and the second bracket 32 ​​is integrally formed with the second side panel 12. Thus, the first side panel 11 and the first bracket 31 are very firmly connected, and the second side panel 12 and the second bracket 32 ​​are very firmly connected.

[0053] Further, see Figures 1 to 8As a specific embodiment of the battery module provided by the present invention, the first bracket 31 is in the shape of a plate disposed perpendicularly to the first side panel 11; the second bracket 32 ​​is in the shape of a plate disposed perpendicularly to the second side panel 12; the first bracket 31 and the first side panel 11 together form an L- or T-shaped structure, while the second bracket 32 ​​and the second side panel 12 together form an L- or T-shaped structure. In this way, the L- or T-shaped structure is less likely to bend under external forces, thereby reducing the bending of the first bracket 31 and the first side panel 11 caused by external forces; the L- or T-shaped structure is less likely to bend under external forces, thereby reducing the bending of the second bracket 32 ​​and the second side panel 12 caused by external forces.

[0054] In one embodiment, the surface of the first bracket 31 is provided with a plurality of intersecting second reinforcing ribs, while the surface of the second bracket 32 ​​is provided with a plurality of intersecting third reinforcing ribs. Thus, the intersecting second reinforcing ribs can enhance the bending resistance of the first bracket 31, while the intersecting third reinforcing ribs can enhance the bending resistance of the second bracket 32.

[0055] Further, see Figures 1 to 8 As a specific embodiment of the battery module provided by the present invention, a plurality of fourth reinforcing ribs 131 are arranged on the outer surface of the first end plate 13, and the plurality of fourth reinforcing ribs 131 are crossed with each other to form a first intersection portion 1311, and a first screw hole 132 is provided on the first intersection portion 1311; a plurality of fifth reinforcing ribs are arranged on the outer surface of the second end plate 14, and the plurality of fifth reinforcing ribs are crossed with each other to form a second intersection portion, and a second screw hole is provided on the second intersection portion; the first fastening mechanism 16 includes: a second screw and a third screw; the second screw passes through the first screw hole 132 and fixes the plastic partition 2 and the first end plate 13; the third screw passes through the second screw hole and fixes the plastic partition 2 and the second end plate 14. In this way, the mutually intersecting fourth reinforcing ribs 131 can improve the bending resistance of the first end plate 13; the fourth reinforcing ribs 131 cross each other to form a first intersection 1311, and the stress on the first intersection 1311 can be distributed to multiple fourth reinforcing ribs 131; the second screw can fix the plastic partition 2 and the first end plate 13 after passing through the first screw hole 132, and it is very convenient to fix the plastic partition 2 and the first end plate 13 by the second screw; it is very convenient to fix the plastic partition 2 and the second end plate 14 by the third screw, and it is very convenient to fix the plastic partition 2 and the second end plate 14 by the third screw; the mutually intersecting fifth reinforcing ribs can improve the bending resistance of the second end plate 14; the fifth reinforcing ribs cross each other to form a second intersection, and the stress on the second intersection can be distributed to multiple fifth reinforcing ribs; the third screw can fix the plastic partition 2 and the second end plate 14 after passing through the second screw hole, and it is very convenient to fix the plastic partition 2 and the second end plate 14 by the third screw.

[0056] Further, seeFigures 1 to 8 As a specific embodiment of the battery module provided by the present invention, the first intersection portion 1311 is cylindrical; the first screw hole 132 extends along the axial direction of the first intersection portion 1311, and the diameter of the first intersection portion 1311 is greater than the width of the fourth reinforcing rib 131. In this way, the stress on the first intersection portion 1311 can be distributed and transferred to the multiple fourth reinforcing ribs 131; the diameter of the first intersection portion 1311 is greater than the width of the fourth reinforcing rib 131, so that the first intersection portion 1311 has a stronger mechanical bending strength than the fourth reinforcing rib 131; the first screw hole 132 extends along the axial direction of the first intersection portion 1311, which facilitates the stress on the inner wall of the first screw hole 132 to be distributed along the extension direction of the first intersection portion 1311.

[0057] In one embodiment, the second intersection portion is cylindrical; the second screw hole extends axially along the second intersection portion, and the diameter of the second intersection portion is greater than the width of the fifth reinforcing rib. Thus, stress on the second intersection portion can be distributed and transferred to multiple fifth reinforcing ribs. The diameter of the second intersection portion is greater than the width of the fifth reinforcing rib, resulting in the second intersection portion having a stronger mechanical bending strength than the fifth reinforcing rib. The second screw hole extends axially along the second intersection portion, facilitating the distribution of stress on the inner wall of the second screw hole along the extension direction of the second intersection portion.

[0058] Further, see Figures 1 to 8 As a specific embodiment of the battery module provided by the present invention, a second adhesive layer 42 is provided on the inner wall of the accommodating cavity 15 for bonding the multiple battery cells 5 in the battery compartment 151. In this way, the battery cells 5 can be fixed to the inner wall of the accommodating cavity 15 through the second adhesive layer 42.

[0059] In one embodiment, the second adhesive layer 42 is located on the first side panel 11 and / or the second side panel 12 .

[0060] Further, see ​ As a specific embodiment of the battery module provided by the present invention, the second adhesive layer 42 is: UV glue; the first adhesive layer 41 is: structural glue.

[0061] About UV glue: that is, shadowless glue, also known as photosensitive glue, ultraviolet light curing glue; shadowless glue is a type of adhesive that is cured by ultraviolet light, and it can be used as an adhesive.

[0062] About structural adhesives: Structural adhesives refer to adhesives with high strength (compression strength>65MPa, steel-steel tensile bonding strength>30MPa, shear strength>18MPa), can withstand large loads, and are resistant to aging, fatigue, and corrosion. They have stable performance within the expected service life and are suitable for bonding structural parts that bear strong forces.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A battery module, characterized in that: include: A plurality of battery cells (5), a non-metallic shell (1) having a receiving cavity (15), a plastic partition (2), and a first fastening mechanism (16); the plastic partition (2) is arranged in the receiving cavity (15) and divides the receiving cavity (15) into a plurality of battery compartments (151); the plastic partition (2) is detachably connected to the inner wall of the receiving cavity (15) via the first fastening mechanism (16); and at least one battery cell (5) is respectively arranged in each of the battery compartments (151).

2. The battery module according to claim 1, wherein: The outer surface of the plastic partition (2) is concave to form a groove (21); the groove (21) is filled with glue, and the plastic partition (2) and the battery core (5) are bonded together by the glue; or A first adhesive layer (42) for bonding the battery core (5) in the battery compartment (151) is provided on the outer side wall of the plastic partition (2).

3. The battery module according to claim 1, wherein: First reinforcing ribs are arranged on the outer surface of the plastic partition (2).

4. The battery module according to claim 1, wherein: The battery module further includes: a second fastening mechanism (17); the non-metallic shell (1) includes: a first side plate (11), a first end plate (13), a second side plate (12), and a second end plate (14); the first side plate (11), the first end plate (13), the second side plate (12), and the second end plate (14) are respectively fixedly connected end to end by the second fastening mechanism (17) and enclosed to form the accommodating cavity (15).

5. The battery module according to claim 4, wherein: One end of the plastic partition (2) has a first flange (24) and / or a first protrusion fixed on the inner wall of the first end plate (13), and the other end of the plastic partition (2) has a second flange (22) and / or a second protrusion (23) fixed on the inner wall of the second end plate (14).

6. The battery module according to claim 4, wherein: The second fastening mechanism (17) is a first screw; the first side plate (11), the first end plate (13), the second side plate (12), and the second end plate (14) are fixedly connected end to end in sequence by the first screw.

7. The battery module according to claim 6, wherein: A first bracket (31) is fixedly connected to the outer surface of the first side plate (11), and a second bracket (32) is fixedly connected to the outer surface of the second side plate (12); the first side plate (11) is located between the first bracket (31) and the second bracket (32), and the second side plate (12) is located between the first bracket (31) and the second bracket (32).

8. The battery module according to claim 7, wherein: The first bracket (31) is in the shape of a plate arranged perpendicularly to the first side plate (11); the second bracket (32) is in the shape of a plate arranged perpendicularly to the second side plate (12); the first bracket (31) and the first side plate (11) together form an L-shaped or T-shaped structure, and the second bracket (32) and the second side plate (12) together form an L-shaped or T-shaped structure; and / or The surface of the first bracket (31) is provided with a plurality of second reinforcing ribs arranged crosswise with each other; the surface of the second bracket (32) is provided with a plurality of third reinforcing ribs arranged crosswise with each other.

9. The battery module according to claim 4, wherein: A plurality of fourth reinforcing ribs (131) are arranged on the outer surface of the first end plate (13), and the plurality of fourth reinforcing ribs (131) are intersected to form a first intersection (1311), and a first screw hole (132) is provided on the first intersection (1311); a plurality of fifth reinforcing ribs are arranged on the outer surface of the second end plate (14), and the plurality of fifth reinforcing ribs are intersected to form a second intersection, and a second screw hole is provided on the second intersection; The first fastening mechanism (16) comprises: a second screw and a third screw; the second screw passes through the first screw hole (132) and fixedly connects the plastic partition (2) and the first end plate (13); the third screw passes through the second screw hole and fixedly connects the plastic partition (2) and the second end plate (14).

10. The battery module according to claim 9, wherein: The first intersection portion (1311) is cylindrical; the first screw hole (132) extends along the axial direction of the first intersection portion (1311); the diameter of the first intersection portion (1311) is greater than the width of the fourth reinforcing rib (131); and / or The second intersection portion is cylindrical; the second screw hole extends along the axial direction of the second intersection portion, and the diameter of the second intersection portion is greater than the width of the fifth reinforcing rib.

11. The battery module according to claim 2, wherein: A second adhesive layer (41) for bonding the plurality of battery cells (5) in the battery compartment (151) is provided on the inner wall of the accommodating cavity (15).

12. The battery module according to claim 11, wherein: The second adhesive layer (41) is UV adhesive; the first adhesive layer (42) is structural adhesive.

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