CN220544124U

CN220544124U - Battery pack

Info

Publication number: CN220544124U
Application number: CN202322134818.XU
Authority: CN
Inventors: 许�鹏; 王龙宇; 杨晓枫; 曹楷; 曹辉
Original assignee: Shanghai Ruipu Energy Co Ltd; Rept Battero Energy Co Ltd
Current assignee: Shanghai Ruipu Energy Co Ltd; Rept Battero Energy Co Ltd
Priority date: 2023-08-09
Filing date: 2023-08-09
Publication date: 2024-02-27
Anticipated expiration: 2033-08-09

Abstract

The utility model belongs to the technical field of battery packs, and particularly relates to a battery pack, which comprises: the box body comprises an opening end, and an annular groove arranged along the circumferential direction of the opening end is formed in the opening end; the box cover comprises a cover body used for covering the opening end of the box body and a cover edge positioned below the cover body; when the box cover is covered on the opening end of the box body, the cover edge is positioned in the annular groove, and the cover edge is tightly attached to one side wall of the annular groove; the annular sealing piece is arranged in the annular groove and radially abuts against the gap between the cover edge and the other side wall of the annular groove; the fastener is used for fixedly connecting the box cover and the box body; the utility model has the beneficial effects that the side wall of the ring groove, the annular sealing piece and the cover are pressed and clung along the radial direction between the side wall of the ring groove, the annular sealing piece and the cover, so that the joint of the box cover and the box body can be kept sealed; the purpose that the box body and the box cover are firmly connected by assembling fewer screws or bolts can be achieved, the production cost is reduced, and the assembling structure of the battery pack is simplified.

Description

Battery pack

Technical Field

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

Background

The battery pack sealing structure in the current industry is mainly sealed by matching an annular sealing gasket with a mounting bolt or a screw.

In the prior art, as shown in fig. 1, a conventional battery pack sealing structure mainly includes an upper cover 1, a gasket 2, a bolt 3, and a lower case 4; the sealing principle is as shown in fig. 2, and the upper cover 1 and the lower case 4 are connected by bolts to compress the gasket 2 in the axial direction, so that the upper cover 1 and the lower case 4 are sealed. However, the sealing reliability of such a sealing structure is affected by the bending strength of the upper cover and the design of the pitch of the bolts, and if the upper cover is designed to have a small thickness, the bending strength is poor, and the peripheral edge of the upper cover is easily deformed due to the reaction force of the gasket.

Disclosure of Invention

The utility model aims at solving the technical problems, and provides a battery pack which achieves the effect of reducing the assembly quantity of screws or bolts while ensuring the sealing performance.

In view of this, the present utility model provides a battery pack comprising:

the box body comprises an opening end, and an annular groove arranged along the circumferential direction of the opening end is formed in the opening end;

the box cover comprises a cover body used for covering the opening end of the box body and a cover edge positioned below the cover body; when the box cover is covered on the opening end of the box body, the cover edge is positioned in the annular groove, and the cover edge is tightly attached to one side wall of the annular groove;

the annular sealing piece is arranged in the annular groove and radially abuts against the gap between the cover edge and the other side wall of the annular groove;

the fastener is used for fixedly connecting the box cover and the box body.

Further, the cover is attached to the side wall of the ring groove, which is close to the inner wall of the box body.

Further, the cover is along a side wall of the ring groove, which is far away from the inner wall of the box body.

Further, the distance L between the side wall of the ring groove, which is close to the inner wall of the box body, and the inner wall of the box body is 1.5mm-5mm.

Further, the depth H of the annular groove along the circumferential direction is 6mm-20mm.

Further, the radial width W of the ring groove is 3.5mm-10mm.

Further, the cover edge of the cover and the cover body are of an integrated structure, and the cover edge is formed by bending the end part of the cover body downwards along the circumferential direction.

Further, the annular sealing element is a sealing ring or sealant.

Further, the outer periphery of the case cover is also provided with a connecting part, the connecting part comprises a plurality of connecting bodies arranged at intervals, and the fastening piece is arranged on the connecting bodies and fixedly connected with the case body.

Further, the fastener is a screw or a bolt.

The beneficial effects of the utility model are as follows:

the side wall of the ring groove, the annular sealing piece and the cover are pressed and clung along the radial direction, so that the joint of the box cover and the box body can be kept sealed; meanwhile, one side of the cover is abutted against the annular sealing element along the radial direction, and the other side is abutted against the side wall of the annular groove, so that the reverse acting force of the annular sealing element to the cover edge is received by the side wall of the annular groove and the cover body of the cover cannot be pressed, the requirement of the sealing structure on the bending strength of the upper cover is reduced, the aim of stably connecting the box body and the cover by assembling fewer screws or bolts can be achieved, the production cost is reduced, the economic benefit is improved, and the integral assembling structure of the battery pack is simplified.

Drawings

Fig. 1 is a schematic view showing a conventional battery pack structure in the background of the utility model;

fig. 2 is a schematic view of a conventional battery pack sealing structure in the background of the utility model;

fig. 3 is a schematic view of the structure of a battery pack according to the present utility model;

fig. 4 is a schematic view of a battery pack sealing structure according to an embodiment of the present utility model;

fig. 5 is a schematic view of a battery pack sealing structure according to another embodiment of the present utility model;

FIG. 6 is an enlarged schematic view of the structure of FIG. 4A in accordance with the present utility model;

the label in the figure is:

1. an upper cover; 2. a sealing gasket; 3. a bolt; 4. a lower box body; 11. a case; 12. a ring groove; 13. a case cover; 14. a cover rim; 15. a fastener; 16. an annular seal; 17. a connecting body; l, the distance between the side wall of the ring groove, which is close to the inner wall of the box body, and the inner wall of the box body; H. the depth of the ring groove along the circumferential direction; w, the radial width of the ring groove.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all of the embodiments. All other embodiments, based on the embodiments herein, which a person of ordinary skill in the art would obtain without undue burden from the person of ordinary skill in the art, are within the scope of protection of the present application.

In the description of the present application, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. For ease of description, the dimensions of the various features shown in the drawings are not drawn to actual scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. 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 discussion thereof is necessary in subsequent figures.

Example 1:

the present embodiment provides a battery pack including:

the box body 11, the box body 11 comprises an open end, and the open end is provided with a ring groove 12 arranged along the circumferential direction of the open end;

a cover 13, said cover 13 comprising a cover for covering the open end of said housing 11 and a cover rim 14 located below said cover; when the cover 13 is covered on the opening end of the box 11, the cover edge 14 is positioned in the ring groove 12, and the cover edge 14 is tightly attached to one side wall of the ring groove 12;

an annular seal 16, the annular seal 16 being disposed within the annular groove 12, and the annular seal 16 radially abutting between the cover rim 14 and the other side wall of the annular groove 12;

and a fastening member 15, wherein the fastening member 15 is used for fixedly connecting the case cover 13 and the case body 11.

In the technical scheme, the battery pack consists of a box body 11 and a box cover 13, wherein an open end is arranged on the box body 11, and a ring groove 12 arranged along the circumferential direction of the opening of the box body 11 is arranged on the open end; the cover 13 includes a cover body for covering the open end of the case 11 and a cover rim 14 located below the cover body, and when the cover 13 is covered on the open end of the case 11, the cover rim 14 is located in the ring groove 12 and abuts against one side wall of the ring groove 12, and then the cover 13 and the case 11 are fixedly coupled together by a fastener 15.

An annular sealing member 16 is arranged in the annular groove 12, and the annular sealing member 16 radially abuts against the cover rim 14 and the other side wall of the annular groove 12, namely, one side of the annular sealing member 16 is tightly attached to the annular groove 12 along the radial direction, and the other side of the annular sealing member 16 is tightly attached to the cover rim 14.

The structural design utilizes the extrusion of the side wall of the ring groove 12, the annular sealing piece 16 and the cover edge 14 to be tightly attached, so that the joint of the box cover 13 and the box body 11 can be kept sealed, meanwhile, as one side of the cover edge 14 is abutted against the annular sealing piece 16 along the radial direction, one side is abutted against the other side wall of the ring groove 12, the reverse acting force of the annular sealing piece 16 to the cover edge 14 is accepted by the other side wall of the ring groove 12, and the pressure is not caused to the cover body of the box cover 13, thereby reducing the requirement of the sealing structure on the bending strength of the upper cover, reducing the assembly quantity of the fastening pieces 15, reducing the production cost and improving the economic benefit; the whole assembly structure of the battery pack is simplified, and the practicability is effectively improved.

Example 2:

the present embodiment provides a battery pack having the following technical features in addition to the technical scheme including the above embodiments.

Further, the cover rim 14 is tightly attached to the side wall of the ring groove 12, which is close to the inner wall of the case 11. Or,

further, the cover rim 14 is closely attached to the side wall of the ring groove 12 away from the inner wall of the case 11.

In this technical solution, as shown in fig. 4, the cover edge 14 of the cover 13 is tightly attached to the side wall of the ring groove 12 close to the inner wall of the case 11, or, as shown in fig. 5, the cover edge 14 of the cover 13 is tightly attached to the side wall of the ring groove 12 far from the inner wall of the case 11. Both embodiments can make the lid along 14 along radial direction one side butt annular seal 16, the opposite side butt annular groove 12's one lateral wall to make annular seal 16 to lid along 14's reverse effort by annular groove 12's another lateral wall accept, and can not cause pressure to the lid of case lid 13, and then reduce seal structure and to the requirement of upper cover flexural strength, reduce fastener 15's assembly quantity, reduction in production cost, improve economic benefits, still simplify the holistic assembly structure of battery package.

Example 3:

Further, the distance L between the side wall of the ring groove 12, which is close to the inner wall of the box 11, and the inner wall of the box 11 is 1.5mm-5mm.

Further, the depth H of the ring groove 12 in the circumferential direction is 6mm-20mm.

Further, the radial width W of the ring groove 12 is 3.5mm-10mm.

In the technical scheme, the distance L between the side wall of the annular groove 12, which is close to the inner wall of the box body 11, and the inner wall of the box body is 1.5-5 mm, the depth H of the annular groove 12 along the circumferential direction is 6-20 mm, and the width W of the annular groove 12 along the radial direction is 3.5-10 mm.

Example 4:

Further, the cover edge 14 of the cover 13 and the cover body are integrally formed, and the cover edge 14 is formed by bending the end of the cover body downward along the circumferential direction.

In this technical scheme, be integrated into one piece structure between lid along 14 and the lid of case lid 13, lid along 14 is the structure that the tip of lid was buckled down along circumference and is formed, and this structural design utilizes lid along 14 and lid integrated into one piece, then through buckling down the tip of lid along circumference and form lid along 14, strengthens the connection fastness along 14 and lid, has still improved the processing convenience along 14 simultaneously.

Example 5:

Further, the annular seal 16 is a sealing ring or sealant.

In this technical solution, the annular sealing member 16 may be a sealing ring or sealant, optionally, a sealing ring is selected, and the sealing ring is disposed in the annular groove 12 and is pressed by one side wall of the annular groove 12 and the cover edge 14 along the radial direction, so that two sides of the sealing ring along the radial direction are respectively clung to one side wall of the annular groove 12 and the cover edge 14, and the tightness of the joint of the case cover 13 and the case body 11 is ensured.

Example 6:

Further, a connecting portion is further provided on the peripheral edge of the case cover 13, the connecting portion includes a plurality of connecting bodies 17 disposed at intervals, and the fastening member 15 is disposed on the connecting bodies 17 and is fixedly connected with the case 11.

In this technical scheme, be equipped with connecting portion on the circumference side of case lid 13, connecting portion includes the connector 17 that a plurality of intervals set up, and fastener 15 sets up on connector 17, and fastener 15 and connector 17 cooperation are used for with case lid 13 and box 11 fixed connection, and this structural design promotes the steadiness that case lid 13 and box 11 are connected on the basis that annular seal 16 extrudeed and realize sealed effect for seal structure is more firm. And the connecting parts are designed into a plurality of connecting bodies 17 which are arranged at intervals, so that the manufacturing cost of the connecting parts is reduced and the economic benefit is improved on the premise of not influencing the connection firmness of the box cover 13 and the box body 11.

Example 7:

Further, the fastener 15 is a screw or a bolt.

In this technical scheme, fastener 15 can be any one of screw or bolt, through set up the first mounting hole of through-connection body 17 on each connector 17, then be equipped with a plurality of second mounting holes in the open end department of box 11, second mounting hole and first mounting hole are counterpointed one by one, then screw or bolt pass first mounting hole and second mounting hole, through screw or bolt with case lid 13 and box 11 fixed connection together, select screw or bolt as fastener 15, strengthened the connection fastness between case lid 13 and the box 11 effectively.

The embodiments of the present application and the features of the embodiments may be combined without conflict, and the present application is not limited to the specific embodiments described above, which are merely illustrative, not restrictive, and many forms may be made by those of ordinary skill in the art, without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A battery pack, comprising:

the box body (11), the box body (11) comprises an opening end, and the opening end is provided with a ring groove (12) arranged along the circumference direction of the opening end;

a cover (13), the cover (13) comprising a cover body for covering the open end of the case body (11) and a cover rim (14) located below the cover body; when the box cover (13) is covered on the opening end of the box body (11), the cover edge (14) is positioned in the annular groove (12), and the cover edge (14) is tightly attached to one side wall of the annular groove (12);

an annular seal (16), the annular seal (16) being disposed within the annular groove (12), and the annular seal (16) radially abutting between the cover rim (14) and the other side wall of the annular groove (12);

and the fastener (15) is used for fixedly connecting the box cover (13) and the box body (11).

2. A battery pack according to claim 1, wherein the lid rim (14) is in close proximity to the side wall of the ring groove (12) adjacent to the inner wall of the case (11).

3. A battery pack according to claim 1, wherein the lid rim (14) is in close proximity to the side wall of the ring groove (12) remote from the inner wall of the casing (11).

4. A battery pack according to claim 1, wherein the distance L between the side wall of the ring groove (12) adjacent to the inner wall of the case (11) and the inner wall of the case (11) is 1.5mm to 5mm.

5. A battery pack according to claim 1, wherein the circumferential depth H of the ring groove (12) is 6mm-20mm.

6. A battery pack according to claim 1, wherein the radial width W of the ring groove (12) is 3.5mm-10mm.

7. A battery pack according to claim 1, wherein the lid edge (14) of the lid cover (13) and the lid body are integrally formed, and the lid edge (14) is formed by bending an end portion of the lid body downward in a circumferential direction.

8. A battery pack according to claim 1, wherein the annular seal (16) is a gasket or sealant.

9. A battery pack according to claim 1, wherein the outer peripheral edge of the case cover (13) is further provided with a connecting portion, the connecting portion comprises a plurality of connecting bodies (17) arranged at intervals, and the fastening member (15) is arranged on the connecting bodies (17) and fixedly connected with the case body (11).

10. A battery pack according to claim 9, wherein the fastener (15) is a screw or bolt.