CN211719629U

CN211719629U - Power battery cover plate structure and battery with same

Info

Publication number: CN211719629U
Application number: CN202020808599.2U
Authority: CN
Inventors: 许久凌; 赵浩; 徐雨; 王佳浩
Original assignee: China Aviation Lithium Battery Research Institute Co Ltd; CALB Technology Co Ltd
Current assignee: Avic Innovation Technology Research Institute Jiangsu Co ltd; China Lithium Battery Technology Co Ltd; CALB Technology Co Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-10-20
Anticipated expiration: 2030-05-15

Abstract

The utility model relates to the technical field of batteries, and provides a power battery cover plate structure and a battery with the same, wherein the power battery cover plate structure comprises a body, a pole, a first connecting piece and a sealing piece, and the body is provided with a pole hole; the pole is arranged in the pole hole in a penetrating way; the first connecting piece is arranged between the body and the pole; the sealing element is arranged between the body and the pole; the first connecting piece is provided with a plurality of corresponding surfaces adjacent to the sealing piece, and gaps between the body and the pole are formed between the corresponding surfaces and the sealing piece. Through forming a plurality of corresponding surfaces between first connecting piece and sealing member, the link up of utmost point post and body needs pass through a plurality of corresponding surfaces promptly to this has lengthened the electric clearance between utmost point post and the body, thereby has solved the less problem in electric clearance between utmost point post and the apron body among the prior art.

Description

Power battery cover plate structure and battery with same

Technical Field

The disclosure relates to the technical field of batteries, in particular to a power battery cover plate structure and a battery with the same.

Background

At present, the cover plate structure comprises a pole, a cover plate body and an insulating structure, wherein the insulating structure comprises upper plastic, lower plastic and a sealing ring. In the assembling process, the pole is installed on the cover plate body, and the pole and the cover plate body are sealed and insulated by the insulating structure.

In the prior art, the cylindrical surface of the pole and the channel in the middle of the inner side of the pole hole of the cover plate body are designed to be through, namely, only one corresponding surface between the upper plastic and the sealing ring is provided, the electrical gap between the pole and the cover plate body is small, and particularly, if a metal wire exists in the channel during assembly, the electrical gap between the pole and the cover plate body is possibly too small, so that insulation failure is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a power battery cover plate structure and have its battery to solve among the prior art problem that the electric clearance between utmost point post and the apron body is less.

According to the utility model discloses a first aspect provides a power battery cover plate structure, include:

the body is provided with a pole column hole;

the pole column is arranged in the pole column hole in a penetrating manner;

the first connecting piece is arranged between the body and the pole;

the sealing element is arranged between the body and the pole;

the first connecting piece is provided with a plurality of corresponding surfaces adjacent to the sealing piece, and gaps between the body and the pole are formed between the corresponding surfaces and the sealing piece.

The utility model discloses a power battery cover plate structure is through forming a plurality of corresponding surfaces between first connecting piece and sealing member, and the link up of utmost point post and body needs to pass through a plurality of corresponding surfaces promptly to this has lengthened the electric clearance between utmost point post and the body, thereby has solved the less problem in electric clearance between utmost point post and the apron body among the prior art.

According to a second aspect of the present invention, a battery is provided, comprising the above-mentioned power battery cover plate structure.

The utility model discloses a battery is through forming a plurality of corresponding faces between first connecting piece and sealing member, and the link up of utmost point post and body needs to pass through a plurality of corresponding faces promptly to this has lengthened the electric clearance between utmost point post and the body, thereby has improved the security performance of battery.

Drawings

Various objects, features and advantages of the present disclosure will become more apparent from the following detailed description of preferred embodiments thereof, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the disclosure 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 schematic structural diagram illustrating a power cell cover structure according to an exemplary embodiment;

FIG. 2 is a schematic view of a first alternative configuration at A in FIG. 1;

FIG. 3 is a second alternate structural schematic at A in FIG. 1;

FIG. 4 is a schematic view of the structure at A in FIG. 1;

FIG. 5 is a schematic view of a third alternative configuration at A in FIG. 1;

FIG. 6 is a fourth alternate structural schematic at A in FIG. 1;

FIG. 7 is a fifth alternative schematic view of FIG. 1 at A;

fig. 8 is a sixth alternative schematic at a in fig. 1.

The reference numerals are explained below:

10. a body; 20. a pole column; 30. a first connecting member; 31. a first corresponding surface; 32. a second corresponding surface; 33. a third corresponding surface; 34. a fourth corresponding surface; 35. a fifth corresponding surface; 40. a seal member; 50. an insulating member.

Detailed Description

Exemplary embodiments that embody features and advantages of the present disclosure are described in detail below in the specification. It is to be understood that the disclosure is capable of various modifications in various embodiments without departing from the scope of the disclosure, 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 disclosure, 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 disclosure 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 disclosure. 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 disclosure, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples in the figures. The plurality described in this disclosure is at least 2. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of this disclosure.

An embodiment of the utility model provides a power battery cover plate structure, please refer to fig. 1, power battery cover plate structure includes: the device comprises a body 10, wherein a pole column hole is formed in the body 10; the pole 20, the pole 20 is arranged in the pole hole in a penetrating way; the first connecting piece 30, the first connecting piece 30 is arranged between the body 10 and the pole 20; a sealing member 40, the sealing member 40 being disposed between the body 10 and the pole 20; the first connecting member 30 has a plurality of corresponding surfaces adjacent to the sealing member 40, and a gap is formed between the corresponding surfaces and the sealing member 40 between the body 10 and the pole 20.

The utility model discloses a power battery cover plate structure of an embodiment is through forming a plurality of corresponding faces between first connecting piece 30 and sealing member 40, and the link up of utmost point post 20 and body 10 needs to pass through a plurality of corresponding faces promptly to this has lengthened the electric clearance between utmost point post 20 and the body 10, thereby has solved the less problem in electric clearance between utmost point post and the apron body among the prior art.

In one embodiment, the first connecting member 30 and the sealing member 40 are used for insulation sealing of the body 10 and the pole 20, and the bent passages formed by the plurality of corresponding surfaces replace straight through passages in the prior art, so that the creepage distance is increased, and even if a metal wire is present in the passages, the metal wire can be blocked from being a conductor connecting between the pole 20 and the body 10.

In one embodiment, the first connector 30 is disposed between the body 10 and the pole 20, which is interpreted as a partial segment of the first connector 30 being located between the body 10 and the pole 20, i.e., within the pole hole. The sealing member 40 is arranged between the body 10 and the pole 20, which can be interpreted as that a partial section of the sealing member 40 is located between the body 10 and the pole 20, i.e. in the pole bore.

In one embodiment, the first connector 30 has a plurality of corresponding surfaces adjacent the seal member 40, and correspondingly, the seal member 40 has a plurality of reference surfaces adjacent the first connector 30, the corresponding surfaces and the reference surfaces being disposed in a one-to-one relationship. A gap is formed between the corresponding surface and the reference surface, the gap here can be that the corresponding surface and the reference surface are in direct contact, that is, no space is left between the corresponding surface and the reference surface, but the contact mark between the corresponding surface and the reference surface can also be understood as a gap when the corresponding surface and the reference surface are in butt joint, that is, an electrical gap between the body 10 and the pole 20. When there is a clearance between the corresponding surface and the reference surface, the clearance is formed by the clearance, i.e. the electrical gap between the body 10 and the pole 20. Of course, it is also possible to have only a partial space between the counter surface and the reference surface, while the remaining part has no space, but the gap is formed in its entirety. The gap herein does not specifically refer to the necessity of an air gap, and there are different situations in the actual assembly process of each component, and the specific situation is subject to the actual assembly, and is not limited herein.

Specifically, the first connecting member 30 and the sealing member 40 have a plurality of contact surfaces therebetween, and the first connecting member 30 and the sealing member 40 are in contact with each other, so that a contact surface is formed therebetween, and the contact surface can be understood as a surface where the first connecting member 30 and the sealing member 40 are in contact, i.e., a contact surface is a corresponding surface of the first connecting member 30, or a surface where the sealing member 40 and the first connecting member 30 are in contact, i.e., a contact surface is a reference surface of the sealing member 40. Here, the contact may be interpreted as that the first connecting member 30 is in direct contact with the sealing member 40, that is, at least a portion of the first connecting member 30 and the sealing member 40 have no gap therebetween, or the contact may be interpreted as that the first connecting member 30 and the sealing member 40 are arranged at a distance, that is, the gap therebetween is small, and the different interpretation of the contact is also based on the situation that occurs in the actual assembly process (there may be no gap therebetween, or there may be a gap therebetween), and this is only intended to indicate that the electrical gap between the first connecting member 30 and the sealing member 40 is long.

In one embodiment, at least one of the plurality of corresponding surfaces is a circular arc surface, a curved surface, a flat surface, or an inclined surface, and the specific form of the corresponding surface is not limited as long as the length of the electrical gap is ensured to be increased.

In one embodiment, the plurality of corresponding faces includes: a first corresponding face 31; the first corresponding surface 31 and the second corresponding surface 32 are adjacently arranged, and one end of the first corresponding surface 31, which is far away from the second corresponding surface 32, is adjacently arranged with the body 10, that is, the passage from the body 10 to the pole 20 firstly passes through the first corresponding surface 31. . The number of the corresponding surfaces is at least two, and the two corresponding surfaces are not on the same surface, so that the channel between the pole 20 and the body 10 is a bending channel.

In one embodiment, the projection of the first corresponding surface 31 on the horizontal plane is a plane, and the projection of the second corresponding surface 32 on the horizontal plane is a plane or a line, i.e. a bending channel is formed.

In one embodiment, as shown in fig. 2, a portion of the first connecting member 30 and a portion of the sealing member 40 are sandwiched between the body 10 and the pole 20, and a portion of the sealing member 40 is sandwiched between the first connecting member 30 and the pole 20, so that a first corresponding surface 31 is formed between a bottom end of the first connecting member 30 and the sealing member 40, and a second corresponding surface 32 is formed between a circumferential surface of the first connecting member 30 and a circumferential surface of the sealing member 40, wherein the first corresponding surface 31 is located on a horizontal plane, the second corresponding surface 32 is perpendicular to the horizontal plane, and an end of the first corresponding surface 31 away from the second corresponding surface 32 is disposed adjacent to the body 10.

In one embodiment, as shown in fig. 3, a portion of the first connecting member 30 and a portion of the sealing member 40 are sandwiched between the body 10 and the pole 20, and a portion of the first connecting member 30 is sandwiched between the sealing member 40 and the pole 20, so that a first corresponding surface 31 is formed between a top end of the sealing member 40 and the first connecting member 30, and a second corresponding surface 32 is formed between a circumferential surface of the first connecting member 30 and a circumferential surface of the sealing member 40, wherein the first corresponding surface 31 is located on a horizontal plane, the second corresponding surface 32 is perpendicular to the horizontal plane, and an end of the first corresponding surface 31 away from the second corresponding surface 32 is disposed adjacent to the body 10.

In one embodiment, the plurality of corresponding faces further comprises: and a third corresponding surface 33, wherein one end of the second corresponding surface 32, which is far away from the first corresponding surface 31, is adjacent to the third corresponding surface 33, and the projection of the third corresponding surface 33 on the horizontal plane is a plane. The provision of the third corresponding surface 33 further increases the length of the electrical gap between the pole 20 and the body 10.

In one embodiment, an end of the third corresponding surface 33 away from the second corresponding surface 32 is disposed adjacent to the pole 20, that is, a passage from the body 10 to the pole 20 passes through the first corresponding surface 31, the second corresponding surface 32 and the third corresponding surface 33 in sequence.

In one embodiment, as shown in fig. 4, a portion of the first connecting member 30 and a portion of the sealing member 40 are sandwiched between the body 10 and the pole 20, and a portion of the sealing member 40 is sandwiched between the first connecting member 30 and the pole 20, so that a first corresponding surface 31 is formed between a bottom end of the first connecting member 30 and the sealing member 40, a second corresponding surface 32 is formed between a circumferential surface of the first connecting member 30 and a circumferential surface of the sealing member 40, and a third corresponding surface 33 is formed between a top end of the sealing member 40 and the first connecting member 30, wherein the first corresponding surface 31 is located on a horizontal plane, the second corresponding surface 32 is perpendicular to the horizontal plane, the third corresponding surface 33 is located on the horizontal plane, an end of the first corresponding surface 31 away from the second corresponding surface 32 is disposed adjacent to the body 10, and an end of the third corresponding surface 33 away from the second corresponding surface 32 is disposed adjacent to the pole 20. The first, second and third

corresponding surfaces

31, 32, 33 form a stepped configuration, i.e. a "step" is provided on the first connecting member 30 and the sealing member 40.

In one embodiment, as shown in fig. 5, which differs from fig. 4 in part in that the first and third corresponding faces 31, 33 are beveled, i.e. disposed inclined to the horizontal.

In one embodiment, as shown in fig. 6, a portion of the first connecting member 30 and a portion of the sealing member 40 are sandwiched between the body 10 and the pole 20, and a portion of the first connecting member 30 is sandwiched between the sealing member 40 and the pole 20, so that a first corresponding surface 31 is formed between the top end of the sealing member 40 and the first connecting member 30, a second corresponding surface 32 is formed between the circumferential surface of the first connecting member 30 and the circumferential surface of the sealing member 40, and a third corresponding surface 33 is formed between the bottom end of the first connecting member 30 and the sealing member 40, wherein the first corresponding surface 31 is located on a horizontal plane, the second corresponding surface 32 is perpendicular to the horizontal plane, the third corresponding surface 33 is located on the horizontal plane, an end of the first corresponding surface 31 away from the second corresponding surface 32 is disposed adjacent to the body 10, and an end of the third corresponding surface 33 away from the second corresponding surface 32 is disposed adjacent to the pole 20. The first, second and third

corresponding surfaces

In one embodiment, as shown in fig. 7, which differs from fig. 6 in part in that the first and third corresponding faces 31, 33 are beveled, i.e., disposed inclined to the horizontal.

In one embodiment, the plurality of corresponding faces further comprises: and a fourth corresponding surface 34, wherein one end of the third corresponding surface 33 far away from the second corresponding surface 32 is arranged adjacent to the fourth corresponding surface 34, and the projection of the fourth corresponding surface 34 on the horizontal plane is a plane or a line.

In one embodiment, the plurality of corresponding faces further comprises: and a fifth corresponding surface 35, wherein one end of the fourth corresponding surface 34 far away from the third corresponding surface 33 is adjacent to the fifth corresponding surface 35, and the projection of the fifth corresponding surface 35 on the horizontal plane is a plane. The provision of the fourth 34 and fifth 35 corresponding surfaces further increases the length of the electrical gap between the pole 20 and the body 10.

In one embodiment, an end of the fifth corresponding surface 35 far from the fourth corresponding surface 34 is disposed adjacent to the pole 20, that is, a passage from the body 10 to the pole 20 passes through the first corresponding surface 31, the second corresponding surface 32, the third corresponding surface 33, the fourth corresponding surface 34 and the fifth corresponding surface 35 in sequence.

In one embodiment, as shown in fig. 8, the first connecting member 30 is provided with a groove, a portion of the sealing member 40 is inserted into the groove, so that the first and fifth

corresponding surfaces

31 and 35 are formed between the bottom end of the first connecting member 30 and the sealing member 40, a second corresponding surface 32 and a fourth corresponding surface 34 are formed between the circumferential surface of the first connecting member 30 and the circumferential surface of the seal member 40, a third corresponding surface 33 is formed between the tip end of the seal member 40 and the first connecting member 30, wherein, the first corresponding surface 31, the third corresponding surface 33 and the fifth corresponding surface 35 are positioned on a horizontal plane, the second corresponding surface 32 and the fourth corresponding surface 34 are vertical to the horizontal plane, one end of the first corresponding surface 31 far away from the second corresponding surface 32 is adjacent to the body 10, and the end of the third corresponding surface 33 far from the second corresponding surface 32 is adjacent to the pole 20, and the end of the fifth corresponding surface 35 far from the fourth corresponding surface 34 is adjacent to the pole 20.

In one embodiment, as shown in fig. 1, the power battery cover structure further includes an insulating member 50, the insulating member 50 is located below the body 10, the first connecting member 30 and the insulating member 50 are respectively made of upper plastic and lower plastic, and the sealing member 40 is a sealing ring.

An embodiment of the utility model also provides a battery, including foretell power battery cover plate structure.

The utility model discloses a battery of an embodiment is through forming a plurality of corresponding surfaces between first connecting piece 30 and sealing member 40, and the link up of utmost point post 20 and body 10 needs to pass through a plurality of corresponding surfaces promptly to this has lengthened the electric clearance between utmost point post 20 and the body 10, thereby has improved the security performance of battery.

The utility model discloses a power battery cover plate structure has increased the creepage distance between body 10 and utmost point post 20, increases dielectric strength, even there is the wire (like the aluminium silk) on the body 10, along with the process that first connecting piece 30 and sealing member 40 compress tightly, also can block the aluminium silk in the sealing member 40 outside, avoids with utmost point post 20 direct overlap joint.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and exemplary embodiments be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A power battery cover plate structure, comprising:

the device comprises a body (10), wherein a pole column hole is formed in the body (10);

the pole (20) is arranged in the pole hole in a penetrating manner;

a first connector (30), the first connector (30) being disposed between the body (10) and the pole (20);

a seal (40), the seal (40) being disposed between the body (10) and the pole (20);

the first connecting piece (30) is provided with a plurality of corresponding surfaces adjacent to the sealing piece (40), and gaps between the corresponding surfaces and the sealing piece (40) are formed between the corresponding surfaces and the pole (20).

2. The power battery cover plate structure of claim 1, wherein at least one of the plurality of corresponding surfaces is a circular arc surface, a curved surface, a flat surface, or an inclined surface.

3. The power battery cover plate structure of claim 1, wherein a plurality of said corresponding faces comprise:

a first corresponding surface (31);

a second corresponding face (32), the first corresponding face (31) being disposed adjacent to the second corresponding face (32);

wherein one end of the first corresponding surface (31) far away from the second corresponding surface (32) is arranged adjacent to the body (10).

4. The power battery cover plate structure according to claim 3, characterized in that the projection of the first corresponding surface (31) on a horizontal plane is a plane, and the projection of the second corresponding surface (32) on a horizontal plane is a plane or a line.

5. The power cell cover plate structure of claim 3 or 4, wherein a plurality of said corresponding faces further comprise:

and one end, far away from the first corresponding surface (31), of the second corresponding surface (32) is adjacent to the third corresponding surface (33), and the projection of the third corresponding surface (33) on the horizontal plane is a plane.

6. Power battery cover plate structure according to claim 5, characterized in that the end of the third corresponding surface (33) remote from the second corresponding surface (32) is arranged adjacent to the pole (20).

7. The power battery cover plate structure of claim 5, wherein a plurality of said corresponding faces further comprise:

and one end, far away from the second corresponding surface (32), of the third corresponding surface (33) is adjacent to the fourth corresponding surface (34), and the projection of the fourth corresponding surface (34) on the horizontal plane is a plane or a line.

8. The power battery cover plate structure of claim 7, wherein a plurality of said corresponding faces further comprise:

and one end, far away from the third corresponding surface (33), of the fourth corresponding surface (34) is adjacent to the fifth corresponding surface (35), and the projection of the fifth corresponding surface (35) on the horizontal plane is a plane.

9. The power battery cover plate structure according to claim 8, characterized in that the end of the fifth corresponding surface (35) remote from the fourth corresponding surface (34) is arranged adjacent to the pole (20).

10. A battery comprising a power battery cover structure according to any one of claims 1 to 9.