Battery module sealing structure

Abstract

The utility model discloses a battery module sealing structure which comprises a shell and a cover plate, the shell comprises a bottom plate and a plurality of side plates which are connected to the peripheral side of the bottom plate and are perpendicular to the bottom plate, the bottom plate and the side plates enclose to form an accommodating cavity for accommodating a battery module, and the cover plate is arranged at the top of the shell and is used for sealing the shell; one of the side edges of the upper end surface of the side plate and the lower end surface of the cover plate is provided with a groove, the other one is provided with a bulge, and the groove and the bulge are mutually coupled so as to connect the cover plate with the shell; a through hole penetrating in the thickness direction of the cover plate is formed in the cover plate, and threaded holes are formed in the upper end faces of the side plates. Bolts are further included, penetrate through the through holes and are embedded into the threaded holes so that the cover plate can be fixed to the shell. According to the battery module sealing structure provided by the utility model, when the cover plate is connected with the side plates, the bulges and the grooves are coupled and locked through the bolts, so that the cover plate and the shell are sealed, and the operation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of battery modules, in particular to a battery module sealing structure. Background Art

[0002] A battery module generally includes a housing and a plurality of battery packs disposed in the housing, such as Figure 1 As shown, it shows the structure of a common module shell, which consists of a bottom plate, a plurality of side plates fixed on the outer edge of the bottom plate, and a cover plate connected to the side plates. The side plates and the cover plates are usually sealed by welding. Although this connection method can improve the sealing effect of the shell and prevent dust from entering the shell, the sealing method mentioned above requires the outer edge of the cover plate to be aligned with the upper edge of the side plate before welding, which is more troublesome to operate and requires the operator to have certain welding experience. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a battery module sealing structure. When the cover plate is connected to the side plate, the protrusion is coupled with the groove and is locked by bolts, so that the cover plate and the shell are sealed, and the operation is simple.

[0004] The technical solution of the utility model is as follows:

[0005] A battery module sealing structure comprises an outer shell and a cover plate, wherein the outer shell comprises a bottom plate, a plurality of side plates connected to the periphery of the bottom plate and perpendicular to the bottom plate, the bottom plate and the side plates enclose a receiving cavity for receiving the battery module, and the cover plate is arranged on the top of the outer shell for sealing the outer shell; one of the upper end surface of the side plate and the side edge of the lower end surface of the cover plate is provided with a groove, and the other is provided with a protrusion, the groove and the protrusion are coupled with each other to connect the cover plate with the outer shell; the cover plate is provided with a through hole penetrating along the thickness direction thereof, and the upper end surface of the side plate is provided with a threaded hole; and also comprises a bolt, the bolt passes through the through hole and is embedded in the threaded hole to fix the cover plate on the outer shell.

[0006] Preferably, the groove is arranged on the upper end surface of the side plate, and the protrusion is arranged on the side edge of the lower end surface of the cover plate.

[0007] Furthermore, the number of the groove and the number of the protrusion is one or two.

[0008] Preferably, the grooves on the upper end surfaces of the plurality of side plates are interconnected.

[0009] Preferably, at least one of the two opposite side walls of the groove is inclined outward.

[0010] Furthermore, it also includes a sealing ring, which is embedded in the groove.

[0011] Preferably, the bolt is a flat head bolt, and the cross section of the through hole is in an inverted cone shape.

[0012] Preferably, the number of the through holes and the threaded holes are both multiple, and the two correspond one to one.

[0013] Specifically, the depth of the groove is set between 3-10 mm, and the width is set between 5-10 mm.

[0014] Preferably, the protrusion and the cover plate are an integrated structure.

[0015] The beneficial effects of the utility model are:

[0016] A groove is provided on the upper edge of the side plate, and a protrusion is provided on the bottom plate of the side edge of the cover plate. When the cover plate is connected to the side plate, the protrusion is coupled with the groove and locked by bolts, thereby sealing the cover plate and the shell, which is easy to operate. In addition, the connection structure of the groove and the protrusion is also conducive to improving the sealing effect. In addition, compared with welding sealing, the detachable sealing structure is convenient for the battery module to be repaired or recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0018] In the attached picture:

[0019] Figure 1 It is a structural schematic diagram of an existing battery module sealing structure;

[0020] Figure 2 A structural schematic diagram of a battery module sealing structure of the utility model;

[0021] Figure 3 This is another structural schematic diagram of the battery module sealing structure of the present utility model.

[0022] The components represented by the reference numerals are:

[0023] 1 groove, 2 side plate, 3 bottom plate, 4 cover plate, 5 protrusion, 6 bolt, 7 through hole, 8 threaded hole, 9 sealing ring. DETAILED DESCRIPTION

[0024] See also Figure 2 and Figure 3 The utility model provides a battery module sealing structure, including a shell and a cover plate 4.

[0025] Among them, the outer shell includes a bottom plate 3, and multiple side plates 2 connected to the periphery of the bottom plate 3 and perpendicular to the bottom plate 3. The bottom plate 3 and the side plates 2 are enclosed to form a receiving cavity for accommodating the battery module. The cover plate 4 is arranged on the top of the outer shell to seal the outer shell.

[0026] One of the upper end surface of the side plate 2 and the side edge of the lower end surface of the cover plate 4 is provided with a groove 1, and the other is provided with a protrusion 5, and the groove 1 and the protrusion 5 are coupled to each other to connect the cover plate 4 to the housing. For example, the groove 1 can be provided on the upper end surface of the side plate 2, and the protrusion 5 can be provided on the side edge of the lower end surface of the cover plate 4, or the protrusion 5 can be provided on the upper end surface of the side plate 2, and the groove 1 can be provided on the side edge of the lower end surface of the cover plate 4. In order to facilitate the coupling of the protrusion 5 with the groove 1, the groove 1 can be provided on the upper end surface of the side plate 2, and the protrusion 5 can be provided on the side edge of the lower end surface of the cover plate 4.

[0027] In addition, there is no limitation on the number of grooves 1 and protrusions 5, and the number of the grooves 1 and the protrusions 5 can be one. Of course, in order to improve the sealing effect, the number of grooves 1 and the protrusions 5 can be set to two, and the spacing between adjacent grooves 1 or protrusions 5 can be set between 3-5 mm.

[0028] Furthermore, to ensure the sealing effect, the depth of the groove 1 is set between 3-10 mm, and the width is set between 5-10 mm. For example, the depth of the groove 1 can be 8 mm, and the width can be 5 mm.

[0029] The cover plate 4 is provided with a through hole 7 penetrating along the thickness direction thereof, and the upper end surface of the side plate 2 is provided with a threaded hole 8; it also includes a bolt 6, which penetrates the through hole 7 and is embedded in the threaded hole 8 to fix the cover plate 4 on the shell. When the cover plate 4 is connected to the side plate 2, the protrusion 5 is coupled with the groove 1 and is locked by the bolt 6, so as to seal the cover plate 4 and the shell, and the operation is simple. In addition, the connection structure between the groove 1 and the protrusion 5 is also conducive to improving the sealing effect. In addition, compared with the welding seal, the detachable sealing structure is convenient for the battery module to be repaired or recycled.

[0030] In one embodiment, the grooves 1 on the upper end surfaces of the plurality of side panels 2 are interconnected, thereby improving the sealing effect and facilitating the connection between the cover panel 4 and the side panel 2 .

[0031] Optionally, in order to further improve the sealing effect between the cover plate 4 and the side plate 2, a sealing ring 9 may be provided in the groove 1, and the sealing ring 9 may be made of natural rubber, silicone or other materials.

[0032] Optionally, in order to facilitate the protrusion 5 to be embedded in the groove 1, at least one of the two opposite side walls of the groove 1 is tilted outward. In addition, through the above arrangement, the sealing between the side plate 2 and the cover plate 4 can also be increased.

[0033] In one embodiment, the bolt 6 is a flat-head bolt 6 , and the cross-section of the through hole 7 is in an inverted cone shape, so that the bolt 6 head of the bolt 6 is completely embedded in the through hole 7 , which can save space and improve the aesthetics.

[0034] In addition, there is no limitation on the number of the through holes 7 and the threaded holes 8. The number of the through holes 7 and the threaded holes 8 are both multiple and correspond one to one to improve the sealing effect.

[0035] Optionally, the protrusion 5 and the cover plate 4 are an integrated structure, which helps to reduce the difficulty of molding.

[0036] The above are only preferred implementations of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery module sealing structure, characterized in that: The invention comprises an outer shell and a cover plate (4), wherein the outer shell comprises a bottom plate (3), a plurality of side plates (2) connected to the periphery of the bottom plate (3) and perpendicular to the bottom plate (3), the bottom plate (3) and the side plates (2) enclose a receiving cavity for receiving a battery module, and the cover plate (4) is arranged on the top of the outer shell and is used to seal the outer shell; One of the upper end surface of the side plate (2) and the side edge of the lower end surface of the cover plate (4) is provided with a groove (1), and the other is provided with a protrusion (5), and the groove (1) and the protrusion (5) are coupled with each other to connect the cover plate (4) to the housing; The cover plate (4) is provided with a through hole (7) penetrating along the thickness direction thereof, and the upper end surface of the side plate (2) is provided with a threaded hole (8); and further comprises a bolt (6), wherein the bolt (6) penetrates the through hole (7) and is embedded in the threaded hole (8) so as to fix the cover plate (4) on the housing.

2. The battery module sealing structure according to claim 1, characterized in that: The groove (1) is arranged on the upper end surface of the side plate (2), and the protrusion (5) is arranged on the side edge of the lower end surface of the cover plate (4).

3. The battery module sealing structure according to claim 2, characterized in that: The number of the groove (1) and the number of the protrusion (5) is one or two.

4. The battery module sealing structure according to claim 3, characterized in that: The grooves (1) on the upper end surfaces of the plurality of side plates (2) are interconnected.

5. The battery module sealing structure according to claim 1, characterized in that: At least one of the two opposite side walls of the groove (1) is arranged to be inclined outwards.

6. The battery module sealing structure according to claim 1, characterized in that: It also comprises a sealing ring (9), wherein the sealing ring (9) is embedded in the groove (1).

7. The battery module sealing structure according to claim 1, characterized in that: The bolt (6) is a flat-head bolt (6), and the cross section of the through hole (7) is in the shape of an inverted cone.

8. The battery module sealing structure according to claim 1, characterized in that: The through holes (7) and threaded holes (8) are both multiple in number and correspond one to one.

9. The battery module sealing structure according to claim 1, characterized in that: The depth of the groove (1) is set between 3-10 mm, and the width is set between 5-10 mm.

10. The battery module sealing structure according to claim 1, characterized in that: The protrusion (5) and the cover plate (4) are an integrated structure.

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