CN214505623U - Battery shell, battery and battery module - Google Patents

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery shell, a battery and a battery module, wherein the battery shell comprises a cylindrical shell; the apron, apron welded fastening is in the tip opening part of cylinder shell to form one in making the cylinder shell and hold the chamber, the apron edge is provided with the welding position department of cylinder shell inner wall and keeps away the position district, keeps away the position district and is used for holding the welding agent, so that the welding agent flushes with the outer wall of cylinder shell. The utility model provides a battery case, battery and battery module, the welded position department of apron edge and cylinder shell inner wall sets up keeps away a district, through should keeping away a district, can hold the welding agent for the welding agent flushes with the outer wall of cylinder shell, and then can eliminate the welding height, reduces the space degree of difficulty of arranging of battery module, promotes the space utilization of battery module.

Description

Battery shell, battery and battery module

Technical Field

The utility model relates to a battery technology field especially relates to a battery case, battery and battery module.

Background

The existing aluminum shell cylindrical battery mainly adopts a laser welding mode to carry out sealing connection on a cover plate and a cylindrical shell. Because the diameter of apron is the same with the diameter of cylinder shell, laser welding's space is less, and liquid level tension and welding inflation can lead to the material in the welding seam to be extruded, form the welding height surplus that adheres to in cylinder battery outer wall, and the welding height surplus can make the diameter grow of cylinder battery, and then influences the inner space design of battery module, and the space of battery module arranges the degree of difficulty and increases, and space utilization reduces.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery case, battery and battery module can eliminate the welding height of redundant effectively, promotes the space utilization of battery module.

To achieve the above object, in one aspect, the present invention provides a battery case, including:

a cylindrical shell;

the cover plate is fixedly welded at an opening at the end part of the cylindrical shell so as to form an accommodating cavity in the cylindrical shell, a position avoiding area is arranged at the welding position of the edge of the cover plate and the inner wall of the cylindrical shell and used for accommodating welding agent so as to enable the welding agent to be flush with the outer wall of the cylindrical shell.

Preferably, the avoiding area comprises an annular gap, the inner wall of the cylindrical shell comprises an inner side wall, the cover plate comprises an inner connecting side wall, the inner side wall corresponds to the inner connecting side wall, and a space is formed between the inner side wall and the inner connecting side wall to form the annular gap.

Preferably, the avoiding area comprises an annular groove, the inner wall of the cylindrical shell comprises an annular end surface, the cover plate comprises an external side wall, the annular end surface corresponds to the external side wall, and a distance is reserved between the annular end surface and the external side wall to form the annular groove.

Preferably, a plastic part is fixedly arranged on the cover plate and is positioned on one side of the accommodating cavity.

Preferably, the cover plate is further fixedly provided with a riveting column, and the plastic piece is fixed by the riveting column through a through hole in the center of the cover plate.

Preferably, the cover plate is further fixedly provided with a sealing ring, and the sealing ring is fixed on the cover plate through the riveting column.

Preferably, the cover plate is further fixedly provided with an output terminal, the output terminal is fixed on the cover plate through the riveting column, and the sealing ring is located between the output terminal and the cover plate.

Preferably, the number of the cover plates is two, and the two cover plates are respectively welded and fixed at openings at two ends of the cylindrical shell.

On the other hand, the utility model provides a battery, including foretell battery case.

In another aspect, the present invention provides a battery module including the above battery.

The utility model has the advantages that: the utility model provides a battery case, battery and battery module, the welded position department of apron edge and cylinder shell inner wall sets up keeps away a district, through should keeping away a district, can hold the welding agent for the welding agent flushes with the outer wall of cylinder shell, and then can eliminate the welding height, reduces the space degree of difficulty of arranging of battery module, promotes the space utilization of battery module.

Drawings

FIG. 1 is a schematic view of a cover plate of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a schematic structural diagram of the battery of the present invention;

fig. 4 is a partially enlarged view of a portion B of fig. 3;

fig. 5 is another schematic structure of the battery of the present invention;

fig. 6 is a partially enlarged view of a portion C in fig. 5.

In the figure: 1. a cylindrical shell; 11. an inner sidewall; 12. an annular end face; 2. a cover plate; 21. an inscribed side wall; 22. the outer side wall is connected; 23. a plastic part; 24. riveting the column; 25. an output terminal; 26. a seal ring; 3. an annular gap; 4. an annular groove; 5. and (5) battery cores.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model provides a battery case, battery and battery module can eliminate the welding height surplus effectively, promotes battery module's space utilization. The battery housing, the battery and the battery module according to the present invention will be described with reference to the following embodiments.

As shown in fig. 1 to 6, the battery case provided in the present embodiment includes a cylindrical case 1 and a cover plate 2. The cylindrical shell 1 with two open ends is used for accommodating the battery cell 5; apron 2 has two, and two apron 2 welded fastening are respectively in the opening part of 1 two tip of cylinder shell for form the chamber that holds electric core 5, and 2 edges of apron are provided with the welding position department of 1 inner wall of cylinder shell and keep away the district, keep away the district and be used for holding the welding flux, so that the welding flux flushes with the outer wall of cylinder shell 1, and then can eliminate the welding height surplus, reduces the space degree of difficulty of arranging of battery module, promotes the space utilization of battery module.

In the present embodiment, as shown in fig. 1 to 6, the inner wall of the cylindrical shell 1 includes an inner side wall 11 and an annular end surface 12, and the cover plate 2 includes an inner side wall 21 and an outer side wall 22. Specifically, the inner side wall 11 corresponds to the inscribed side wall 21, and the annular end surface 12 corresponds to the circumscribed side wall 22.

In this embodiment, as shown in fig. 3 and 4, the avoiding region may include an annular gap 3, a space is formed between the inner sidewall 11 and the inner sidewall 21 to form the annular gap 3, the annular gap 3 is used for accommodating a welding agent, and the annular gap 3 has a simple structure and is convenient to process and manufacture.

In other embodiments, as shown in fig. 5 and 6, the keep-away area may further include an annular groove 4, the annular end surface 12 is spaced apart from the outer side wall 22 to form the annular groove 4, the annular groove 4 is used for accommodating the welding agent, and the annular groove 4 has a simple structure and is convenient to manufacture.

It will be appreciated that the exclusion zone may also include both the annular gap 3 and the annular groove 4, thereby accommodating more solder.

Preferably, as shown in fig. 1, a plastic part 23 is fixedly arranged on the cover plate 2, the plastic part 23 is located on one side of the accommodating cavity, and the plastic part 23 can ensure that the metal part of the cover plate 2 does not contact with the internal structure of the battery cell 5, and can play an insulating role. Furthermore, the cover plate 2 is further fixedly provided with a riveting column 24, and the riveting column 24 can fix the plastic piece 23 through a through hole in the center of the cover plate 2. Furthermore, the cover plate 2 is further fixedly provided with an output terminal 25, the output terminal 25 can also be fixed on the cover plate 2 through a riveting column 24, and the output terminal 25 can be electrically connected with an external circuit.

Preferably, as shown in fig. 1, a sealing ring 26 is further fixed to the cover plate 2, and the sealing ring 26 is fixed to the cover plate 2 by a rivet column 24. Specifically, a gasket 26 is provided at a through hole at a central position of the cap plate 2 for securing sealability of the battery case. Further, a packing 26 may be located between the output terminal 25 and the cover plate 2, facilitating the fixation of the packing 26.

The battery provided by the embodiment comprises the battery shell, and the battery has no welding surplus height.

Preferably, as shown in fig. 3 and 5, the battery of the present embodiment further includes a battery core 5, and the battery core 5 is fixed in the accommodating cavity. Further, the two ends of the battery cell 5 are respectively provided with a positive tab and a negative tab, and the positive tab and the negative tab are respectively electrically connected with the output terminals 25 of the two cover plates 2.

The battery module provided by the embodiment comprises the battery, and the space utilization rate of the battery module is high.

Can find out through above-mentioned embodiment, the battery case, battery and the battery module that this embodiment provided, 2 edges of apron and the welding position department of 1 inner wall of cylinder shell set up and keep away the district, through should keeping away the district, can hold the welding flux for the welding flux flushes with the outer wall of cylinder shell 1, and then can eliminate the welding height remaining, reduces the space of battery module and arranges the degree of difficulty, promotes the space utilization of battery module.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A battery case, comprising:

a cylindrical shell (1);

the welding device comprises a cover plate (2), wherein the cover plate (2) is fixedly welded at an opening at the end part of the cylindrical shell (1) so as to form a containing cavity in the cylindrical shell (1), a position avoiding area is arranged at the welding position of the edge of the cover plate (2) and the inner wall of the cylindrical shell (1), and the position avoiding area is used for containing welding flux so as to enable the welding flux to be flush with the outer wall of the cylindrical shell (1).

2. The battery case according to claim 1, wherein the exclusion zone comprises an annular gap (3), the inner wall of the cylindrical shell (1) comprises an inner sidewall (11), the cover plate (2) comprises an inner sidewall (21), the inner sidewall (11) corresponds to the inner sidewall (21), and the inner sidewall (11) and the inner sidewall (21) are spaced apart to form the annular gap (3).

3. The battery housing according to claim 1, wherein the displacement zone comprises an annular groove (4), the inner wall of the cylindrical shell (1) comprises an annular end surface (12), the cover plate (2) comprises a circumscribing side wall (22), the annular end surface (12) corresponds to the circumscribing side wall (22), and a space is provided between the annular end surface (12) and the circumscribing side wall (22) to form the annular groove (4).

4. The battery shell as recited in claim 1, wherein a plastic member (23) is fixedly disposed on the cover plate (2), and the plastic member (23) is disposed at one side of the accommodating cavity.

5. The battery shell according to claim 4, wherein a rivet column (24) is further fixedly arranged on the cover plate (2), and the rivet column (24) is used for fixing the plastic part (23) through a through hole in the center of the cover plate (2).

6. The battery shell according to claim 5, characterized in that the cover plate (2) is further fixedly provided with a sealing ring (26), and the sealing ring (26) is fixed on the cover plate (2) through the riveting column (24).

7. The battery case according to claim 6, wherein the cover plate (2) is further fixedly provided with an output terminal (25), the output terminal (25) is fixed on the cover plate (2) through the riveting column (24), and the sealing ring (26) is positioned between the output terminal (25) and the cover plate (2).

8. The battery shell as recited in claim 1, wherein the number of the cover plates (2) is two, and the two cover plates (2) are respectively welded and fixed at openings at two ends of the cylindrical shell (1).

9. A battery comprising the battery case according to any one of claims 1 to 8.

10. A battery module comprising the battery according to claim 9.

Images