Shell of battery module and battery module

Abstract

The utility model discloses a shell of a battery module and the battery module. The shell comprises a box body and a cover plate, the box body comprises a bottom plate, two side plates connected to the two sides of the bottom plate respectively and two end plates connected to the two ends of the bottom plate respectively, and a battery containing cavity is defined by the bottom plate, the two side plates and the two end plates; two clamping grooves are formed in the two sides of the bottom face of the cover plate respectively and extend in the length direction of the cover plate, the distance between the two clamping grooves is equal to the distance between the two side plates so that the two side plates can be embedded into the two clamping grooves respectively, and included angles between the outer surfaces of the upper ends of the side plates and the lower surfaces of the side ends of the cover plate are fixedly connected through angle welding. According to the shell of the battery module disclosed by the utility model, the two clamping grooves which transversely extend are formed in the bottom of the cover plate, and the distance between the clamping grooves is equal to the distance between the two side plates, so that only the two clamping grooves need to be correspondingly embedded in the two side plates during assembly, and clamping equipment does not need to be used, thereby being beneficial to improving the assembly efficiency.

Description

Technical Field

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

[0002] The battery module usually includes a shell and a plurality of battery packs arranged in the shell. The shell is generally composed of a bottom plate, a cover plate, two side plates and two end plates. Figure 1 As shown in the figure, it shows the structure of a common module housing. The two ends of the cover plate are usually set as step surfaces. The cover plate is connected to the two side plates through the two step surfaces, and then the cover plate and the side plates are fixed by welding. In specific operation, it is necessary to use a clamping mechanism to clamp the two side plates, align the upper end of the outer wall of the side plate with the side edge of the cover plate, and then weld. Although this connection structure is simple in structure, it takes a lot of time to connect, which is not conducive to improving assembly efficiency. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a battery module housing, which is provided with two transversely extending slots at the bottom of the cover plate, and the spacing between the slots is equal to the spacing between the two side plates. When assembling, it is only necessary to embed the two slots into the two side plates accordingly, and no clamping equipment is needed, which is conducive to improving assembly efficiency. In addition, the slots can also increase the airtightness between the cover plate and the side plates.

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

[0005] A battery module housing includes a box body and a cover plate. The box body includes a bottom plate, two side plates respectively connected to both sides of the bottom plate, and two end plates respectively connected to both ends of the bottom plate, wherein the bottom plate, the two side plates and the two end plates enclose a battery accommodating cavity; two card slots are respectively arranged on both sides of the bottom surface of the cover plate, wherein the card slots extend along the length direction of the cover plate, and the spacing between the two card slots is equal to the spacing between the two side plates, so that the two side plates can be respectively embedded in the two card slots, and the angle between the outer surface of the upper end of the side plate and the lower surface of the side end of the cover plate is fixedly connected by fillet welding.

[0006] Preferably, the width of the card slot is equal to the thickness of the side plate.

[0007] Specifically, the thickness of the side plate and the bottom plate is set between 2mm and 4mm.

[0008] Preferably, the thickness of the card slot is not less than 2 mm.

[0009] Preferably, the bottom plate and the two side plates are an integrated structure.

[0010] Preferably, the upper side edge of the side plate in the thickness direction thereof is arc-shaped.

[0011] Preferably, the distance between the card slot and the side edge of the cover plate is set between 4mm and 8mm.

[0012] Preferably, both of the two side panels are provided with a first reinforcing rib, and the first reinforcing rib extends along the length direction of the side panel.

[0013] Furthermore, a second reinforcing rib is provided on the cover plate, and the second reinforcing rib extends along the length direction of the cover plate.

[0014] On the other hand, an embodiment of the utility model further provides a battery module, including a housing and a plurality of battery packs, wherein the plurality of battery packs are fixed in the housing, and the housing is the housing described in any of the above embodiments.

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

[0016] By setting two horizontally extending slots at the bottom of the cover plate, and the spacing between the slots is equal to the spacing between the two side plates, when assembling, it is only necessary to embed the two slots into the two side plates accordingly, without the need for clamping equipment, which is conducive to improving assembly efficiency. In addition, the slots can also increase the airtightness between the cover plate and the side plates. 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 the shell of an existing battery module;

[0020] Figure 2 This is a schematic diagram of the structure of the outer shell of the battery module of the utility model;

[0021] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0022] Figure 4 The utility model is a schematic diagram of the structure of the cover plate in the shell of the battery module.

[0023] The components represented by the reference numerals are:

[0024] 1 cover plate, 2 card slot, 3 side plate, 4 bottom plate, 5 first reinforcing rib, 6 second reinforcing rib. DETAILED DESCRIPTION

[0025] See also Figures 2 to 4 The utility model provides a battery module shell, including a box body and a cover plate 1.

[0026] The box body includes a bottom plate 4, two side plates 3 respectively connected to both sides of the bottom plate 4, and two end plates respectively connected to both ends of the bottom plate 4. The bottom plate 4, the two side plates 3 and the two end plates enclose a battery accommodating cavity. Specifically, the bottom plate 4 and the two side plates 3 are an integrated structure, that is, the side plates 3 are formed by bending the two sides of the bottom plate 4, which helps to reduce the difficulty of forming. In addition, the end portions are detachably connected to the side plates 3, the bottom plate 4 and the cover plate 1, for example, by using colloid or bolts to facilitate recycling or replacement of the battery pack.

[0027] Two card slots 2 are respectively arranged on both sides of the bottom surface of the cover plate 1. The card slots 2 extend along the length direction of the cover plate 1, that is, the card slots 2 extend in the horizontal direction. The spacing between the two card slots 2 is equal to the spacing between the two side panels 3, so that the two side panels 3 can be respectively embedded in the two card slots 2. The angle between the outer surface of the upper end of the side panel 3 and the lower surface of the side end of the cover plate 1 is fixedly connected by fillet welding. Specifically, the outer surface of the upper end of the side panel 3 and the lower surface of the side end of the cover plate 1 can be connected by laser welding. When assembling, it is only necessary to embed the two card slots 2 on the two side panels 3 accordingly, and no clamping equipment is needed, which is conducive to improving assembly efficiency.

[0028] In addition, it can be understood that the two side panels 3 can be respectively embedded in the two slots 2, so that the outer surface of the upper end of the side panel 3 and the lower surface of the side end of the cover plate 1 form a right angle, and the difficulty of fillet welding is less than that of plane welding. Therefore, the difficulty of welding can be reduced by providing the slots 2. In addition, the slots 2 can also increase the airtightness between the cover plate 1 and the side panels 3.

[0029] Optionally, the upper side edge of the side plate 3 in the thickness direction thereof is in an arc shape, so as to facilitate embedding the card slot 2 on the side plate 3 and reduce the difficulty of connection.

[0030] It is understandable that, in order to facilitate welding between the cover plate 1 and the side plate 3, the distance between the slot 2 and the side edge of the cover plate 1 can be appropriately increased. For example, the distance between the slot 2 and the side edge of the cover plate 1 is set between 4mm and 8mm.

[0031] In one embodiment, the width of the card slot 2 is equal to the thickness of the side plate 3, so that the inner wall of the card slot 2 abuts against the outer wall of the side plate 3, which is conducive to increasing the stability of the connection between the cover plate 1 and the side plate 3. In addition, in order to further increase the stability of the connection between the cover plate 1 and the side plate 3, the thickness of the card slot 2 is not less than 2 mm, for example, the thickness of the card slot 2 can be 2 mm.

[0032] Optionally, in order to make the shell have a certain structural strength, the thickness of the side plate 3 and the bottom plate 4 is set between 2mm and 4mm, for example, the thickness of the side plate 3 and the bottom plate 4 can be 4mm. In addition, in order to further improve the structural strength of the shell, the two side plates 3 are both provided with a first reinforcing rib 5, the first reinforcing rib 5 can be formed by the side plate 3 protruding outward, and the first reinforcing rib 5 extends along the length direction of the side plate 3, that is, the first reinforcing rib 5 extends in the transverse direction, and the cover plate 1 is provided with a second reinforcing rib 6, the second reinforcing rib 6 can be formed by the cover plate 1 protruding outward, and the second reinforcing rib 6 extends along the length direction of the cover plate 1, that is, the second reinforcing rib 6 extends in the transverse direction.

[0033] On the other hand, an embodiment of the utility model further provides a battery module, including a housing and a plurality of battery packs, wherein the plurality of battery packs are fixed in the housing, and the housing is the housing in any of the above embodiments.

[0034] 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 housing, characterized in that: include: A box body, the box body comprising a bottom plate (4), two side plates (3) respectively connected to both sides of the bottom plate (4), and two end plates respectively connected to both ends of the bottom plate (4), the bottom plate (4), the two side plates (3) and the two end plates enclosing to form a battery accommodating cavity; A cover plate (1), wherein two card slots (2) are respectively arranged on both sides of the bottom surface of the cover plate (1), the card slots (2) extend along the length direction of the cover plate (1), the spacing between the two card slots (2) is equal to the spacing between the two side plates (3), so that the two side plates (3) can be respectively embedded in the two card slots (2), and the angle between the outer surface of the upper end of the side plate (3) and the lower surface of the side end of the cover plate (1) are fixedly connected by fillet welding.

2. The battery module housing according to claim 1, characterized in that: The width of the card slot (2) is equal to the thickness of the side plate (3).

3. The housing of the battery module according to claim 2, characterized in that: The thickness of the side plate (3) and the bottom plate (4) is set between 2 mm and 4 mm.

4. The battery module housing according to claim 1, characterized in that: The thickness of the card slot (2) is not less than 2 mm.

5. The battery module housing according to claim 1, characterized in that: The bottom plate (4) and the two side plates (3) are an integrated structure.

6. The battery module housing according to claim 1, characterized in that: The upper side edge of the side plate (3) in the thickness direction thereof is in an arc shape.

7. The battery module housing according to claim 1, characterized in that: The distance between the card slot (2) and the side edge of the cover plate (1) is set between 4 mm and 8 mm.

8. The battery module housing according to claim 1, characterized in that: Both of the two side panels (3) are provided with a first reinforcing rib (5), and the first reinforcing rib (5) extends along the length direction of the side panel (3).

9. The housing of the battery module according to claim 8, characterized in that: The cover plate (1) is provided with a second reinforcing rib (6), and the second reinforcing rib (6) extends along the length direction of the cover plate (1).

10. A battery module, characterized in that: It comprises a shell and a plurality of battery packs, wherein the plurality of battery packs are fixed in the shell, and the shell is the shell according to any one of claims 1 to 9.

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