CN218448266U

CN218448266U - Battery device

Info

Publication number: CN218448266U
Application number: CN202222586065.1U
Authority: CN
Inventors: 赵冬
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-02-03
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to the technical field of batteries, in particular to a battery device, which comprises a box body and a box cover, wherein the box body comprises a plurality of frames which are sequentially welded and enclosed in a closed loop, the welding part of two adjacent frames forms the corner part of the box body, a welding seam is arranged between the two adjacent frames, a sealing strip is arranged between the box body and the box cover, and the sealing strip is arranged along the top surfaces of the frames; the box cover is provided with a notch, and the position of the notch corresponds to the position of the corner part so as to partially expose the part of the sealing strip positioned at the corner part. Through the structure design, the utility model discloses a when the sealing strip pressurized, because the sealing strip is not all covered by the case lid corresponding to the part of corner portion, consequently the edge of the part that the sealing strip is in this position can not produce the deformation inflation to avoid the sealing strip to be located the part of corner portion and the welding seam contact of corner portion, guarantee that the sealing strip can not be damaged by the welding seam, promote battery device's sealing stability and structural reliability.

Description

Battery device

Technical Field

The utility model relates to a battery technology field especially relates to a battery device.

Background

In the existing battery device, a battery box body is connected with a cover plate in a sealing mode through a sealing strip, and the sealing strip is arranged between the bottom surface of the cover plate and the top of a frame of the battery box body. The battery box body is formed by sequentially welding and enclosing a plurality of frames, and welding seams are arranged at the welding positions of the adjacent frames. When the cover plate and the battery box body are assembled, the sealing strip is pressed relatively by the cover plate and the frames to generate width deformation, so that the part of the sealing strip, which is positioned at the welding position of the adjacent frames, is contacted with a welding line, the sealing strip is damaged, and the sealing performance of the battery device is influenced.

SUMMERY OF THE UTILITY MODEL

It is a primary object of the present invention to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery device having improved sealing stability and structural reliability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to an aspect of the present invention, a battery device is provided, wherein the battery device includes a box body and a box cover, the box body includes a plurality of frames which are welded in sequence and enclosed in a closed loop, a welding part of two adjacent frames forms a corner part of the box body, a welding seam is provided between two adjacent frames, a sealing strip is provided between the box body and the box cover, and the sealing strip is arranged along top surfaces of the plurality of frames; the box cover is provided with a notch, and the position of the notch corresponds to the position of the corner part so as to partially expose the part of the sealing strip, which is positioned at the corner part.

According to the above technical scheme, the utility model provides a battery device's advantage lies in with positive effect:

the utility model provides a battery device includes box and case lid, and the junction of two adjacent frames of box forms corner portion, and the case lid is seted up jaggedly, and the position of breach is corresponding with the position of the corner portion of box to the part exposes the part that the sealing strip is located corner portion. Through the structure design, the utility model discloses a when the sealing strip pressurized, because the sealing strip is not all covered by the case lid corresponding to the part of corner portion, consequently the edge of the part that the sealing strip is in this position can not produce the deformation inflation to avoid the sealing strip to be located the part of corner portion and the welding seam contact of corner portion, guarantee that the sealing strip can not be damaged by the welding seam, promote battery device's sealing stability and structural reliability.

Drawings

The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

FIG. 1 is a partial perspective view of a battery device according to an exemplary embodiment;

FIG. 2 is an exploded perspective view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a partial cross-sectional view of the cover shown in FIG. 1;

FIG. 5 is a partial cross-sectional view of a cover of a battery device shown in accordance with another exemplary embodiment;

fig. 6 is a partial top view of a battery device according to yet another exemplary embodiment.

The reference numerals are explained below:

100. a box body;

110. a frame;

111. welding seams;

1111. a protruding end portion;

120. a corner portion;

200. a box cover;

210. a notch;

220. a smooth transition structure;

230. a smooth transition structure;

300. a sealing strip;

310. a smooth transition structure;

a. the width of the opening;

b. the opening depth;

w1, size;

w2, size;

x, direction of extension;

y, width direction.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments, and its several details are capable of modification in various other respects, all without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized, and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures to fall within the scope of the invention.

Referring to fig. 1, a partial perspective view of a battery device according to the present invention is representatively illustrated. In this exemplary embodiment, the battery device provided by the present invention is explained by taking an example of application to an in-vehicle battery. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the inventive concepts described herein to other types of battery devices or other processes, and such changes are within the scope of the principles of the present invention.

As shown in fig. 1, in an embodiment of the present invention, the battery device includes a box 100 and a box cover 200. Referring to fig. 2-4 in combination, fig. 2 representatively illustrates an exploded perspective view of fig. 1; representatively illustrated in fig. 3 is a top view of fig. 1; representatively, in fig. 4, a partial cross-sectional view of the cover 200 illustrated in fig. 1 is shown. The structure, connection mode and functional relationship of the main components of the battery device provided by the present invention will be described in detail below with reference to the above drawings.

As shown in fig. 1 to 4, in an embodiment of the present invention, the box 100 includes a plurality of frames 110 welded in sequence, where the welding position of two adjacent frames 110 forms a corner 120 of the box 100, and a welding seam 111 is formed between two adjacent frames 110. A sealing strip 300 is disposed between the case body 100 and the case cover 200, and the sealing strip 300 is disposed along the top surfaces of the plurality of rims 110. On the basis, the case lid 200 is provided with a notch 210, the position of the notch 210 corresponds to the position of the corner 120, and the notch 210 can partially expose the portion of the weather strip 300 located at the corner 120. Through the structure design, the utility model discloses a when sealing strip 300 is pressurized, because sealing strip 300 is not all covered by case lid 200 corresponding to the part of corner portion 120, consequently sealing strip 300 is located the edge of the part of this position and can not produce deformation inflation to avoid sealing strip 300 to be located the part of corner portion 120 and the welding seam 111 contact of corner portion 120, guarantee that sealing strip 300 can not be damaged by welding seam 111, promote battery device's sealed stability and structural reliability.

As shown in fig. 3, in one embodiment of the present invention, a width direction parallel to the top surface of the frame 110 and perpendicular to the extending direction of the frame 110 is defined, and in the width direction, the ratio of the dimension W1 of the portion of the sealing tape 300 exposed to the notch 210 to the overall dimension W2 of the sealing tape 300 may be 7% to 50%, for example, 7%, 10%, 30%, 50%. Through the structure design, the utility model discloses the size that can avoid sealing strip 300 to expose in the part of breach 210 accounts for than the undersize and is difficult to guarantee that this part of sealing strip 300 does not produce deformation inflation when the pressurized, can avoid sealing strip 300 to expose in the size of the part of breach 210 to account for than too big and influence the sealed effect of sealing strip 300 in this position (corner portion 120) simultaneously. In some embodiments, the ratio of the dimension W1 of the portion of the sealing strip 300 exposed to the notch 210 in the overall dimension W2 of the sealing strip 300 may also be less than 7%, or may be greater than 50%, such as 6.5%, 55%, etc., and is not limited by this embodiment.

In an embodiment of the present invention, the box 100 may include a plurality of frames 110 welded in sequence and enclosed in a closed loop, and the sealing strip 300 may be a closed ring structure, i.e. a sealing ring. In some embodiments, the sealing strip 300 may have a strip structure, such as a straight line, a zigzag line, or a curved line, i.e., the sealing strip may be disposed corresponding to at least two frames 110 that are welded in sequence, which is not limited to the embodiment.

As shown in fig. 4, in an embodiment of the present invention, a junction between an edge of the notch 210 and the bottom surface of the case cover 200 may be a smooth transition structure 220. Through the structure design, the utility model discloses can further avoid causing the damage and influence sealed effect to sealing strip 300.

As shown in fig. 4, based on the structural design that the boundary between the edge of the notch 210 and the bottom surface of the case cover 200 is the smooth transition structure 220, in an embodiment of the present invention, the smooth transition structure 220 at the boundary between the edge of the notch 210 and the bottom surface of the case cover 200 may be a cambered surface transition structure. In some embodiments, the smooth transition structure 220 at the boundary between the edge of the notch 210 and the bottom surface of the lid 200 may also be a slope transition structure, which is not limited to the present embodiment.

As shown in fig. 4, in an embodiment of the present invention, the junction between the edge of the notch 210 and the top surface of the lid 200 may be a smooth transition structure 230. Through the structure design, the utility model discloses can avoid the fish tail operator or damage other components in assembling process, the assembly of further being convenient for is in groups.

As shown in fig. 4, the boundary between the edge of the notch 210 and the top surface of the case cover 200 is a smooth transition structure 230, and in an embodiment of the present invention, the smooth transition structure 230 between the edge of the notch 210 and the top surface of the case cover 200 may be an arc transition structure. In some embodiments, the smooth transition structure 230 at the boundary between the edge of the notch 210 and the top surface of the lid 200 may also be a bevel transition structure, which is not limited to the embodiment.

Referring to fig. 5, a partial cross-sectional view of a cover 200 in another exemplary embodiment of a battery device that can embody principles of the present disclosure is representatively illustrated in fig. 5.

As shown in fig. 5, in an embodiment of the present invention, the smooth transition structure 220 at the intersection between the edge of the notch 210 and the bottom surface of the case cover 200 may be a slope transition structure.

As shown in fig. 5, in an embodiment of the present invention, the smooth transition structure 230 at the intersection of the edge of the notch 210 and the top surface of the case cover 200 may be a slope transition structure.

As shown in fig. 3, in an embodiment of the present invention, the orthographic projection of the notch 210 on the bottom plate of the box 100 may be an arc, such as but not limited to an arc, an elliptical arc, etc. Through the structure design, the utility model has the advantages of be convenient for process. In some embodiments, the orthographic projection of the notch 210 on the bottom plate of the box 100 may also have other shapes, such as a straight line shape, a folded line shape, etc., and the present embodiment is not limited thereto.

As shown in fig. 3, in an embodiment of the present invention, the opening width a of the notch 210 may be 5mm to 20mm, for example, 5mm, 10mm, 15mm, 20mm, etc. The opening depth b of the notch 210 may be 2mm to 10mm, for example, 2mm, 5mm, 8mm, 10mm, or the like. In some embodiments, the opening width a of the notch 210 may also be less than 5mm, or may be greater than 20mm, such as 4.5mm, 21mm, etc., and the opening depth b of the notch 210 may also be less than 2mm, or may be greater than 10mm, such as 1.9mm, 10.5mm, etc., all without being limited by the present embodiment.

As shown in fig. 1 to 3, in an embodiment of the present invention, the welding seam 111 has a protruding end 1111 protruding from the top surface of the frame 110. On this basis, the portion of the weather strip 300 located at the corner 120 may be located inside the protruding end 1111. Through the structure design, the utility model discloses can further avoid sealing strip 300 to be located the part of corner portion 120 and protruding tip extrusion each other and by the fish tail, further promote battery device's sealing stability and structural reliability.

As shown in fig. 1 to 3, based on the structural design that the part of sealing strip 300 at corner 120 is located inside protruding end 1111, in an embodiment of the present invention, the part of sealing strip 300 at corner 120 may be located inside protruding end 1111 at intervals. Through the structure design, the utility model discloses can avoid sealing strip 300 to be located the part and the welding seam 111 of corner portion 120, especially its protruding tip 1111 direct contact that stretches to avoid sealing strip 300 to be located the part of corner portion 120 by the fish tail, further promote battery device's sealing stability and structural reliability.

As shown in fig. 1 to 3, in an embodiment of the present invention, an outer side surface of a portion of the sealing strip 300 located at the corner 120 may be a smooth transition structure 310. Through the structure design, the utility model discloses can optimize the stress state of this part of sealing strip 300, further avoid sealing strip 300 and welding seam 111 contact and be damaged simultaneously.

As shown in fig. 1 to 3, based on the structural design that the outer side surface of the portion of the sealing strip 300 located at the corner 120 is the smooth transition structure 310, in an embodiment of the present invention, the smooth transition structure 310 may be an arc surface transition structure, such as but not limited to an arc surface transition structure, an elliptical arc surface transition structure, and the like. In some embodiments, the smooth transition structure 310 of the outer side surface of the portion of the weather strip 300 located at the corner 120 may also be a bevel transition structure, and is not limited to this embodiment.

Referring to fig. 6, a partial top view of a battery device in another exemplary embodiment that can embody principles of the present invention is representatively illustrated in fig. 6.

As shown in fig. 6, in an embodiment of the present invention, the smooth transition structure 310 of the sealing strip 300 located on the outer side surface of the corner portion 120 may be a slope transition structure.

It is noted herein that the battery devices illustrated in the drawings and described in this specification are merely a few examples of the wide variety of battery devices that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details or any components of the battery device shown in the drawings or described in the present specification.

To sum up, the present invention provides a battery device including a box 100 and a box cover 200, wherein a corner 120 is formed at a welding position of two adjacent frames 110 of the box 100, the box cover 200 is opened with a notch 210, and the position of the notch 210 corresponds to the position of the corner 120 of the box 100, so as to partially expose a portion of the sealing strip 300 located at the corner 120. Through the structure design, the utility model discloses a when sealing strip 300 is pressurized, because sealing strip 300 is not all covered by case lid 200 corresponding to the part of corner portion 120, consequently sealing strip 300 is located the edge of the part of this position and can not produce deformation inflation to avoid sealing strip 300 to be located the part of corner portion 120 and the welding seam 111 contact of corner portion 120, guarantee that sealing strip 300 can not be damaged by welding seam 111, promote battery device's sealed stability and structural reliability.

Exemplary embodiments of the battery device proposed by the present invention are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.

While the proposed battery device has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.

Claims

1. The battery device is characterized by comprising a box body and a box cover, wherein the box body comprises a plurality of frames which are sequentially welded and enclosed in a closed loop manner, the welding positions of two adjacent frames form corner parts of the box body, a welding seam is arranged between the two adjacent frames, a sealing strip is arranged between the box body and the box cover and is arranged along the top surfaces of the frames; the box cover is provided with a notch, and the position of the notch corresponds to the position of the corner part so as to partially expose the part of the sealing strip, which is positioned at the corner part.

2. The battery device according to claim 1, wherein a width direction parallel to the top surface of the frame and perpendicular to an extending direction of the frame is defined, and a ratio of a dimension of a portion of the sealing strip exposed to the notch in the width direction to an entire dimension of the sealing strip is 7% to 50%.

3. The battery device of claim 1, wherein the boundary between the edge of the notch and the bottom surface of the case cover is a smooth transition structure.

4. The battery device according to claim 3, wherein the smooth transition structure is a bevel transition structure or an arc transition structure.

5. The battery device of claim 1, wherein the interface between the edge of the notch and the top surface of the cover is a smooth transition structure.

6. The battery device according to claim 5, wherein the smooth transition structure is a bevel transition structure or a cambered surface transition structure.

7. The battery device according to claim 1, characterized in that:

the orthographic projection graph of the notch on the bottom plate of the box body is arc-shaped; and/or

The opening width of the notch is 5 mm-20 mm, and the opening depth of the notch is 2 mm-10 mm.

8. The battery device according to claim 1, wherein the weld has a protruding end portion protruding from the top surface of the frame, and the portion of the sealing tape located at the corner is located inside the protruding end portion.

9. The battery device according to claim 8, wherein portions of the sealing strip at the corners are spaced inward of the protruding ends.

10. The battery device according to claim 1, wherein the outer side surface of the portion of the sealing strip located at the corner portion is a smooth transition structure.