CN218731325U

CN218731325U - Battery structure and cylindrical battery

Info

Publication number: CN218731325U
Application number: CN202222990175.4U
Authority: CN
Inventors: 谭熠伟; 高旭光; 徐宁; 王鹏伟; 赵宛鑫
Original assignee: Dongguan K Tech New Energy Co ltd
Current assignee: Dongguan K Tech New Energy Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-24
Anticipated expiration: 2032-11-09

Abstract

The application provides a battery structure and cylinder battery. The battery structure comprises a shell, a base sealing ring and a structure stabilizing piece. The shell is provided with a containing groove, the shell is inwards folded at the opening of the containing groove to form a fixing part, the basic sealing ring is positioned in the containing groove and is in sealing connection with the shell, and namely, no gap exists at the part where the basic sealing ring is connected with the shell. The structural stabilizing part is positioned between the fixing part and the foundation sealing ring and is respectively abutted against the fixing part and the foundation sealing ring so as to be fixed between the fixing part and the foundation sealing ring. When the shell is deformed due to collision, the structural stabilizing piece can reduce the deformation of the shell due to the structural strength of the structural stabilizing piece, and further the impact resistance of the battery structure is improved.

Description

Battery structure and cylindrical battery

Technical Field

The utility model relates to a cylinder battery production facility's field especially relates to a battery structure and cylinder battery.

Background

In the long-distance transportation and carrying process of the cylindrical battery, the cylindrical battery can collide, so that the conditions of liquid leakage, smoking and even explosion of the cylindrical battery are generated. Therefore, when the cylindrical battery is produced, the cylindrical battery needs to be subjected to a drop test, namely, the cylindrical battery freely drops at various angles at a certain height so as to detect whether the shock resistance of the cylindrical battery reaches a standard or not.

However, in the conventional technology, when the cylindrical battery is collided, the housing at the positive electrode of the cylindrical battery is easily deformed, so that a gap is easily formed between the housing of the cylindrical battery and the sealing ring, and then battery liquid in the cylindrical battery seeps out from the gap, i.e., the cylindrical battery has poor impact resistance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, provide a higher and better battery structure of leakproofness of shock resistance and cylinder battery.

The purpose of the utility model is realized through the following technical scheme:

a battery structure comprising:

the shell is provided with a containing groove, and a fixing part is formed by inwards folding the shell at an opening of the containing groove;

the basic sealing ring is positioned in the accommodating groove and is in sealing connection with the shell; and

the structure stabilizing piece is located between the fixing portion and the base sealing ring, and the structure stabilizing piece is respectively abutted to the fixing portion and the base sealing ring.

In one embodiment, a side of the structural stabilizer adjacent to the fixing portion is provided with a circular arc abutting surface, and the circular arc abutting surface abuts against the fixing portion.

In one embodiment, the fixing portion is arc-shaped.

In one embodiment, the structural stabilizer is a ring-shaped structure.

In one embodiment, the battery structure comprises an explosion-proof sheet and a top cover, the explosion-proof sheet is located in the accommodating groove, the periphery of the explosion-proof sheet is connected with the periphery of the basic sealing ring, the top cover is located in the accommodating groove, and the periphery of the top cover is connected with the periphery of the explosion-proof sheet.

In one embodiment, the battery structure further comprises a reinforcing sealing ring, the reinforcing sealing ring is located in the accommodating groove, the periphery of the reinforcing sealing ring is clamped between the periphery of the base sealing ring and the periphery of the top cover, and the reinforcing sealing ring is further elastically connected with the periphery of the explosion-proof piece.

In one embodiment, two opposite sides of the reinforcing sealing ring are respectively elastically connected with the shell and the top cover.

In one embodiment, the periphery of the reinforcing seal ring is elastically connected with the periphery of the explosion-proof piece.

In one embodiment, the reinforced sealing ring is of a plastic structure, a rubber structure or a silica gel structure.

A cylindrical battery comprising the battery structure of any of the above embodiments.

Compared with the prior art, the utility model discloses at least, following advantage has:

foretell battery structure, because the one end of casing is equipped with the fixed part, structural stability spare is located between fixed part and the basic sealing washer, and structural stability spare respectively with fixed part and basic sealing washer butt, when the casing of positive department receives the collision, casing atress extrusion structural stability spare, structural stability spare is because of the casing reduction deformation that self structural intensity enabled positive department, avoided producing the gap because of casing deformation extrusion basic sealing washer, and then avoided the weeping condition, even the shock resistance who has got battery structure is higher.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a battery structure according to an embodiment;

FIG. 2 is an enlarged schematic view of the cell structure shown in FIG. 1 at A;

fig. 3 is a schematic view of a structural stabilizer of the battery structure shown in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The application provides a battery structure, including casing, basic sealing washer and structural stability spare. Wherein, the shell is provided with a containing groove, and the shell is internally folded at the opening of the containing groove to form a fixing part. The basic sealing ring is positioned in the accommodating groove and is in sealing connection with the shell, namely, no gap exists at the connecting part of the basic sealing ring and the shell. The structural stabilizing part is positioned between the fixing part and the foundation sealing ring and is respectively abutted against the fixing part and the foundation sealing ring so as to be fixed between the fixing part and the foundation sealing ring.

In order to better understand the technical scheme and the beneficial effects of the present application, the following detailed description is further provided in conjunction with specific embodiments:

as shown in fig. 1, a battery structure 10 of an embodiment includes a case 100, a base sealing ring 200, and a structural stabilizer 300. The housing 100 has a receiving cavity 110, and the housing 100 is folded at an opening of the receiving cavity 110 to form a fixing portion 120. The base sealing ring 200 is located in the receiving groove 110 and is connected to the housing 100 in a sealing manner, that is, there is no gap at the connecting portion of the base sealing ring 200 and the housing 100. The structural stabilizer 300 is positioned between the fixing portion 120 and the base seal ring 200, and the structural stabilizer 300 abuts against the fixing portion 120 and the base seal ring 200, respectively, so that the structural stabilizer 300 is fixed between the fixing portion 120 and the base seal ring 200.

In this embodiment, the structural stabilizer 300 is a high strength steel structure, or other existing sufficiently strong metal structure. When the housing 100 is deformed by a collision, the structural stabilizer 300 is not easily deformed due to the structural strength of the material, i.e., the structural stabilizer 300 supports the housing 100, so that the deformation of the housing 100 is reduced.

Above-mentioned battery structure 10, because the one end of casing 100 is equipped with fixed part 120, structural stability piece 300 is located between fixed part 120 and the basic sealing washer 200, and structural stability piece 300 respectively with fixed part 120 and basic sealing washer 200 butt, when the casing 100 of positive pole department receives the collision, casing 100 atress extrusion structural stability piece 300, structural stability piece 300 can make the casing 100 of positive pole department reduce deformation because of the intensity of self structure, avoided producing the gap because of casing 100 deformation extrusion basic sealing washer 200, and then avoided the weeping condition, even make battery structure 10's shock resistance higher.

As shown in fig. 1, in one embodiment, a circular arc abutting surface 310 is disposed on a side of the structural stabilizer 300 adjacent to the fixing portion 120, and the circular arc abutting surface 310 abuts against the fixing portion 120, so that the structural stabilizer 300 and the fixing portion 120 are tightly attached.

As shown in fig. 1, in one embodiment, the securing portion 120 is arcuate in shape to provide a better fit between the structural stabilizer 300 and the housing 100.

As shown in fig. 3, in one embodiment, the structural stabilizer 300 is a ring-shaped structure, and in this embodiment, when any one of the housings 100 is collided, the structural stabilizer 300 supports the housing 100, so that the deformation of the housing 100 is reduced, and the impact resistance of the battery structure 10 is high.

As shown in fig. 2, in one embodiment, the battery structure 10 includes an explosion-proof sheet 400 and a top cover 500, the explosion-proof sheet 400 is located in the accommodating groove 110, and a periphery of the explosion-proof sheet 400 is connected to a periphery of the base sealing ring 200, the top cover 500 is located in the accommodating groove 110, and a periphery of the top cover 500 is connected to a periphery of the explosion-proof sheet 400, it should be noted that the base sealing ring 200 is tightly attached to the explosion-proof sheet 400 and the top cover 500, respectively, so that the base sealing ring 200 performs a sealing function.

As shown in fig. 2, in one embodiment, the battery structure 10 further includes a reinforcing sealing ring 600, the reinforcing sealing ring 600 is located in the receiving groove 110, the periphery of the reinforcing sealing ring 600 is clamped between the periphery of the base sealing ring 200 and the periphery of the top cover 500, and the reinforcing sealing ring 600 is further elastically connected to the periphery of the explosion-proof sheet 400.

In this embodiment, strengthen the centre gripping of sealing washer 600 between basic sealing washer 200 and top cap 500, and strengthen sealing washer 600 and explosion-proof piece 400 elastic connection, when casing 100 collision takes place to deform, structural stability spare 300 atress extrusion basic sealing washer 200 to make the laminating between strengthening sealing washer 600 and basic sealing washer 200, top cap 500 and the explosion-proof piece 400 inseparabler, and then make the leakproofness of battery structure 10 better.

As shown in fig. 2, in one embodiment, opposite sides of the reinforcing seal 600 are elastically connected to the housing 100 and the top cover 500, respectively. In this embodiment, when casing 100 receives the collision and takes place the deformation, casing 100 produces the effort to strengthening sealing washer 600, strengthens sealing washer 600 atress extrusion top cap 500 and basic sealing washer 200 for it is inseparabler to strengthen the laminating between sealing washer 600 and top cap 500 and the basic sealing washer 200, and then makes the leakproofness of strengthening sealing washer 600 and top cap 500 junction better.

As shown in fig. 2, in one embodiment, the periphery of the reinforcing seal ring 600 is also elastically connected with the periphery of the rupture disc 400. In this embodiment, when casing 100 atress deformation produced the effort to strengthening sealing washer 600, strengthen sealing washer 600 atress extrusion explosion-proof piece 400 for it is inseparabler to strengthen the laminating between sealing washer 600 and the explosion-proof piece 400, and then makes the leakproofness of strengthening the sealing washer 600 and the explosion-proof piece 400 junction better.

As shown in fig. 2, in one embodiment, the reinforced sealing ring 600 is made of plastic, rubber or silicone. It can be understood that when casing 100 takes place deformation, produce the effort to strengthening sealing washer 600, because of the extensibility and the compliance of strengthening the sealing washer 600 material are better for strengthen laminating top cap 500, explosion-proof piece 400 and basic sealing washer 200 better behind the sealing washer 600 atress, and then make the leakproofness of strengthening sealing washer 600 and top cap 500, explosion-proof piece 400 and basic sealing washer 200 junction better.

The present application further provides a cylindrical battery including the battery structure 10 of any of the above embodiments.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A battery structure, comprising:

the shell is provided with a containing groove, and a fixing part is formed by inwards folding the shell at the opening of the containing groove;

a structural stabilizer located between the fixing portion and the base seal ring, the structural stabilizer abutting the fixing portion and the base seal ring, respectively.

2. The battery structure according to claim 1, wherein a side of the structural stabilizer adjacent to the fixing portion is provided with a circular arc abutment surface that abuts against the fixing portion.

3. The battery structure of claim 2, wherein the securing portion is arcuate.

4. The battery structure of claim 1, wherein the structural stabilizer is a ring-shaped structure.

5. The battery structure of claim 1, wherein the battery structure comprises an explosion-proof sheet and a top cover, the explosion-proof sheet is located in the containing groove, the periphery of the explosion-proof sheet is connected with the periphery of the base seal ring, the top cover is located in the containing groove, and the periphery of the top cover is connected with the periphery of the explosion-proof sheet.

6. The battery structure of claim 5, further comprising a reinforcing sealing ring positioned in the receiving groove, wherein a periphery of the reinforcing sealing ring is clamped between a periphery of the base sealing ring and a periphery of the top cover, and the reinforcing sealing ring is further elastically connected to a periphery of the rupture disk.

7. The battery structure of claim 6, wherein opposite sides of the reinforcing seal ring are resiliently coupled to the housing and the top cover, respectively.

8. The battery structure of claim 6, wherein the peripheral edge of the reinforcing seal ring is also resiliently connected to the peripheral edge of the rupture disc.

9. The battery structure of claim 6, wherein the reinforcing seal ring is of a plastic, rubber or silicone construction.

10. A cylindrical battery, characterized by comprising the battery structure of any one of claims 1 to 9.