CN215527884U - Shell structure for button cell and button cell - Google Patents

Shell structure for button cell and button cell Download PDF

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Publication number
CN215527884U
CN215527884U CN202121312792.8U CN202121312792U CN215527884U CN 215527884 U CN215527884 U CN 215527884U CN 202121312792 U CN202121312792 U CN 202121312792U CN 215527884 U CN215527884 U CN 215527884U
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Prior art keywords
upper cover
blind
blind groove
button
clamping
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CN202121312792.8U
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Inventor
胡江波
曹志锋
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Shenzhen Heyi New Energy Technology Co ltd
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Shenzhen Heyi New Energy Technology Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The utility model discloses a shell structure for a button battery and the button battery, wherein the shell structure for the button battery comprises a bottom shell, an upper cover and a sealing ring, the upper cover and the bottom shell are matched to form an accommodating cavity, the upper cover is provided with a blind groove, and the sealing ring is arranged between the bottom shell and the upper cover; the button cell comprises an electric core component and the shell structure for the button cell. According to the shell structure for the button battery, the bottom shell and the upper cover are matched to form an accommodating cavity for mounting the battery cell assembly, and the bottom shell and the upper cover are sealed through the sealing ring and play an insulating role; because the upper cover is equipped with the blind groove, the region at blind groove place is comparatively weak, and when the battery was scrapped or unusual or met the extrusion collision, in case the pressure that holds the intracavity risees, then can break the weak region at blind groove place earlier and form gap or space, and then the release holds the pressure of intracavity, avoids the emergence explosion to the at utmost to play blast-proof effect, reduce the potential safety hazard, guarantee button cell's safety in utilization.

Description

Shell structure for button cell and button cell
Technical Field
The utility model relates to the technical field of button batteries, in particular to a shell structure for a button battery and the button battery.
Background
Button cells, also commonly referred to as Button cells, refer to a type of battery that resembles a Button in shape. Button cells are typically relatively larger in diameter and relatively thinner in thickness than cylindrical cells. Button cell includes the casing and locates the electric core subassembly in the casing, and the casing includes drain pan and upper cover, and drain pan and upper cover cooperation form and hold the chamber, and electric core subassembly is installed and is being held the intracavity, is equipped with the sealing washer between drain pan and the upper cover.
Button cell is at the in-process that uses, when receiving extrusion or collision or button cell surpass normal life and scrap, the electricity core subassembly can appear unusually to the intracavity pressure that holds that leads to the casing sharply risees, leads to button cell to warp and generates heat, leads to the button cell condition such as explosion to appear even when serious, brings serious potential safety hazard.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a casing structure for a button cell and a button cell; the shell structure for the button battery has an explosion-proof function, so that the button battery is prevented from exploding under unexpected conditions, and potential safety hazards are reduced; the button battery comprises the shell structure for the button battery, and potential safety hazards are low.
The technical scheme is as follows:
one embodiment provides a case structure for a button battery, including:
a bottom case;
the upper cover is matched with the bottom shell to form an accommodating cavity, and a blind groove is formed in the upper cover;
and the sealing ring is arranged between the bottom shell and the upper cover.
According to the shell structure for the button battery, the bottom shell and the upper cover are matched to form the accommodating cavity for mounting the battery cell assembly, and the bottom shell and the upper cover are sealed through the sealing ring and play an insulating role; because the upper cover is equipped with the blind groove, the region at blind groove place is comparatively weak, and when the battery was scrapped or unusual or met the extrusion collision, in case the pressure that holds the intracavity risees, then can break the weak region at blind groove place earlier and form gap or space, and then the release holds the pressure of intracavity, avoids the emergence explosion to the at utmost to play blast-proof effect, reduce the potential safety hazard, guarantee button cell's safety in utilization.
The technical solution is further explained below:
in one embodiment, the sealing ring is integrally provided with the upper cover.
In one embodiment, the sealing ring is provided with a first clamping portion, the upper cover is provided with a second clamping portion, and the second clamping portion is in clamping fit with the first clamping portion so that the sealing ring is connected with the upper cover.
In one embodiment, the first clamping portion is a protruding structure arranged on the sealing ring, and the second clamping portion is a clamping groove structure arranged on the upper cover;
or the first clamping part is a clamping groove structure arranged on the sealing ring, and the second clamping part is a protruding structure arranged on the upper cover.
In one embodiment, the number of the second clamping portions is at least two, at least one second clamping portion is arranged on the first surface of the upper cover, at least one second clamping portion is arranged on the second surface of the upper cover, and the number of the first clamping portions is at least two and is in one-to-one correspondence with the second clamping portions; the first surface is positioned on one side of the upper cover far away from the bottom shell, and the second surface is positioned on one side of the upper cover facing the bottom shell;
the convex structure is a convex column structure; or the convex structure is a strip-shaped or annularly extending flange structure.
In one embodiment, the blind groove is provided with at least one, and the blind groove is opened on the first surface of the upper cover;
or the blind groove is provided with at least one, and the blind groove is arranged on the second surface of the upper cover.
In one embodiment, at least two blind grooves are arranged; the blind groove is formed in the first surface of the upper cover, and the blind groove is formed in the second surface of the upper cover.
In one embodiment, the blind grooves extend along a straight line; or the blind groove extends along an arc line; the blind groove extends along the fold line.
In one embodiment, the blind grooves are arranged in a circle; or the blind grooves are arranged in a semicircular shape; or the blind grooves are arranged in a square shape; or the blind grooves are arranged in a triangular shape.
Another embodiment provides a button cell, including:
an electrical core assembly;
according to the shell structure for the button cell, the cell assembly is arranged in the accommodating cavity.
Above-mentioned button cell adopts aforementioned a shell structure for button cell, because the upper cover is equipped with blind groove, the region at blind groove place is comparatively weak, scrap or unusual or meet when the extrusion collision when the battery, in case the pressure that holds the intracavity risees, then can take the lead to break the weak region at blind groove place and form gap or space, and then the release holds the pressure of intracavity, avoids exploding in the at utmost to play blast-proof effect, reduce the potential safety hazard, guarantee button cell's safety in utilization.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Furthermore, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements in the drawings are drawn only by way of example, and not necessarily to true scale.
Fig. 1 is a schematic view of the overall structure of a button cell in the embodiment of the utility model;
FIG. 2 is a sectional view of the button cell in the embodiment of FIG. 1;
FIG. 3 is an assembly view of the bottom shell, the top cover and the gasket of the embodiment of FIG. 1;
FIG. 4 is a schematic front view of an upper cover according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a back structure of the upper cover in the embodiment of FIG. 4;
FIG. 6 is a sectional view of the upper cap and the packing of the embodiment of FIG. 4;
FIG. 7 is an enlarged sectional view of the upper cap and the packing ring in the embodiment of FIG. 6;
FIG. 8 is a front view of the upper cover according to another embodiment of the present invention;
FIG. 9 is a schematic diagram of a back structure of the upper cover in the embodiment of FIG. 8;
FIG. 10 is a sectional view of the upper cap and the packing in the embodiment of FIG. 8;
FIG. 11 is an enlarged sectional view of the upper cap and the packing in the embodiment of FIG. 10;
FIG. 12 is a schematic view of an overall structure of a bottom case according to an embodiment of the present invention;
fig. 13 is a sectional view showing the entire structure of the bottom chassis in the embodiment of fig. 12.
Reference is made to the accompanying drawings in which:
100. a bottom case; 200. an upper cover; 201. a first surface; 202. a second surface; 210. a blind groove; 220. a second clamping part; 300. a seal ring; 310. a first clamping part; 400. electric core subassembly.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings:
in order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
As shown in fig. 1 to 3, the button cell includes a bottom case 100, an upper cover 200, a sealing ring 300, and a cell assembly 400. Wherein:
the bottom case 100 and the upper cover 200 cooperate to form a receiving cavity for mounting the battery pack assembly 400, and a sealing ring 300 is disposed between the bottom case 100 and the upper cover 200 to perform sealing and insulating functions between the bottom case 100 and the upper cover 200.
Referring to fig. 1 to 3, one embodiment provides a housing structure for a button cell, including a bottom case 100, an upper cover 200, and a sealing ring 300. Wherein:
in the embodiment shown in fig. 12 and 13, the bottom case 100 has a housing structure with an opening, and after the upper cover 200 is assembled with the bottom case 100, the opening of the bottom case 100 faces the upper cover 200.
In the embodiment shown in fig. 2, the upper cover 200 cooperates with the bottom case 100 to form a receiving cavity, and the upper cover 200 is provided with a blind groove 210.
In the embodiment shown in fig. 3, the sealing ring 300 is disposed between the bottom case 100 and the upper cover 200.
In the shell structure for the button battery, the bottom shell 100 and the upper cover 200 are matched to form an accommodating cavity for installing the battery pack assembly 400, and the bottom shell 100 and the upper cover 200 are sealed by the sealing ring 300 and play an insulating role; because upper cover 200 is equipped with blind groove 210, the region at blind groove 210 place is comparatively weak, and when the battery was scrapped or unusual or met the extrusion collision, in case the pressure that holds the intracavity risees, then can take the lead to break the weak region at blind groove 210 place and form gap or space, and then the release holds the pressure of intracavity, avoids exploding in the at utmost to play blast-proof effect, simple structure reduces the potential safety hazard, guarantee button cell's safety in utilization.
In one embodiment, at least one blind groove 210 is provided, the blind groove 210 is opened on the first surface 201 of the upper cover 200, and the first surface 201 is located on a side of the upper cover 200 away from the bottom case 100.
In another embodiment, referring to fig. 4 to 7, at least one blind groove 210 is provided, the blind groove 210 is formed on the second surface 202 of the upper cover 200, and the second surface 202 is located on a side of the upper cover 200 facing the bottom case 100.
In the embodiment shown in fig. 5 and 6, the first surface 201 refers to the upper surface of the upper cover 200, the second surface 202 refers to the lower surface of the upper cover 200, the upper surface is not provided with the blind groove 210, and the lower surface is provided with the blind groove 210 to play a role of explosion protection.
In the embodiment shown in fig. 5 and 6, the second surface 202 is provided with two blind grooves 210, and each blind groove 210 is arc-shaped. As shown in fig. 5, the blind slots 210 are arranged in a substantially semicircular shape.
In one embodiment, referring to fig. 8 to 11, at least two blind slots 210 are provided; at least one blind groove 210 is formed in the first surface 201 of the upper cover 200, and at least one blind groove 210 is formed in the second surface 202 of the upper cover 200;
the first surface 201 is located on a side of the upper cover 200 away from the bottom case 100, and the second surface 202 is located on a side of the upper cover 200 facing the bottom case 100.
In the embodiment shown in fig. 8 to 11, the first surface 201 refers to the upper surface of the upper cover 200, the second surface 202 refers to the lower surface of the upper cover 200, the first surface 201 is provided with a blind groove 210, and the second surface 202 is provided with a blind groove 210, so as to achieve the explosion-proof function.
At least two blind grooves 210 are formed in the first surface 201 or the second surface 202, or the blind grooves 210 are formed in the first surface 201 and the second surface 202, so that the effect of multi-stage explosion-proof pressure relief can be achieved.
In one embodiment, the blind grooves 210 extend along a straight line.
In another embodiment, referring to fig. 5, fig. 8 or fig. 9, the blind slot 210 extends along an arc.
In yet another embodiment, the blind groove 210 extends along a fold line.
In one embodiment, the blind slots 210 are arranged in a circle.
In another embodiment, referring to fig. 5, fig. 8 or fig. 9, the blind grooves 210 are disposed in a semicircular shape.
In yet another embodiment, the blind slots 210 are square.
In yet another embodiment, the blind slots 210 are triangular.
Alternatively, the blind groove 210 may be an explosion-proof score provided on the upper cap 200. In specific implementation, a laser machine can be adopted to automatically score according to a set program.
In one embodiment, the sealing ring 300 is integrally provided with the upper cap 200.
Alternatively, the sealing ring 300 may be integrally injection-molded with the upper cap 200.
In one embodiment, referring to fig. 3, 7 and 11, the sealing ring 300 is provided with a first clamping portion 310, the upper cover 200 is provided with a second clamping portion 220, and the second clamping portion 220 is clamped and matched with the first clamping portion 310, so that the sealing ring 300 is connected with the upper cover 200.
The first clamping portion 310 and the second clamping portion 220 are clamped and matched, so that the sealing ring 300 is integrally assembled with the upper cover 200.
In an embodiment, referring to fig. 3, fig. 7 and fig. 11, the first fastening portion 310 is a protrusion structure provided on the sealing ring 300, and the second fastening portion 220 is a fastening groove structure provided on the upper cover 200.
The arrangement of the protruding structure and the clamping groove structure not only realizes the integrated connection of the upper cover 200 and the sealing ring 300, but also plays a role in strengthening sealing.
In another embodiment, the first fastening portion is a fastening groove structure formed on the sealing ring 300, and the second fastening portion is a protrusion structure formed on the upper cover 200.
In an embodiment, referring to fig. 3, 7 and 11, at least two second clamping portions 220 are provided, at least one second clamping portion 220 is provided on the first surface 201 of the upper cover 200, at least one second clamping portion 220 is provided on the second surface 202 of the upper cover 200, and at least two first clamping portions 310 are provided and correspond to the second clamping portions 220 one to one; the first surface 201 is located on a side of the upper cover 200 away from the bottom case 100, and the second surface 202 is located on a side of the upper cover 200 facing the bottom case 100.
In one embodiment, the raised structures are post structures. In this case, the groove structure is a slot structure corresponding to the convex pillar structure.
In another embodiment, the protruding structure is a flange structure extending in a strip shape or a ring shape.
Under this kind of circumstances, the groove structure be with protruding structure correspond be the groove structure of strip setting or be the groove structure of cyclic annular setting.
It should be noted that the strip may be a straight strip, an arc strip or a broken line strip; the ring shape may be a semi-ring or a closed ring, etc., and will not be described in detail.
In specific implementation, the number of the first clamping portions 310 is at least two, at least one of the first clamping portions 310 is a convex column structure, at least one of the first clamping portions 310 is a flange structure extending in a strip shape or an annular shape, and the second clamping portion 220 is disposed corresponding to the first clamping portion 310.
Referring to fig. 1 and fig. 2, another embodiment provides a button cell, which includes a cell assembly 400 and a casing structure for a button cell as described in any of the above embodiments, wherein the cell assembly 400 is disposed in the accommodating cavity.
This button cell adopts aforementioned a shell structure for button cell, because upper cover 200 is equipped with blind groove 210, the region at blind groove 210 place is comparatively weak, scrap or unusual or meet when the extrusion is collided when the battery, in case the pressure that holds the intracavity risees, then can take the weak region at broken blind groove 210 place to form gap or space earlier, and then the release holds the pressure of intracavity, avoid exploding in the at utmost, thereby play blast-proof effect, reduce the potential safety hazard, guarantee button cell's safety in utilization.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" 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," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A shell structure for a button cell, comprising:
a bottom case;
the upper cover is matched with the bottom shell to form an accommodating cavity, and a blind groove is formed in the upper cover;
and the sealing ring is arranged between the bottom shell and the upper cover.
2. Housing structure for button cells according to claim 1, characterized in that the sealing ring is provided integrally with the upper cover.
3. The shell structure for the button cell as defined in claim 2, wherein the sealing ring is provided with a first clamping portion, the upper cover is provided with a second clamping portion, and the second clamping portion is in clamping fit with the first clamping portion so that the sealing ring is connected with the upper cover.
4. The shell structure for the button cell as defined in claim 3, wherein said first engaging portion is a protrusion structure provided on said seal ring, and said second engaging portion is a groove structure provided on said upper cover;
or the first clamping part is a clamping groove structure arranged on the sealing ring, and the second clamping part is a protruding structure arranged on the upper cover.
5. The casing structure for the button battery as defined in claim 4, wherein the number of the second clamping portions is at least two, at least one of the second clamping portions is provided on the first surface of the upper cover, at least one of the second clamping portions is provided on the second surface of the upper cover, and the number of the first clamping portions is at least two and is in one-to-one correspondence with the second clamping portions; the first surface is positioned on one side of the upper cover far away from the bottom shell, and the second surface is positioned on one side of the upper cover facing the bottom shell;
the convex structure is a convex column structure; or the convex structure is a strip-shaped or annularly extending flange structure.
6. Shell structure for button cells according to any of the claims from 1 to 5, characterized in that said blind groove is provided with at least one, said blind groove opening on the first surface of said upper cover;
or the blind groove is provided with at least one, and the blind groove is arranged on the second surface of the upper cover.
7. Shell structure for button cells according to any of the claims from 1 to 5, characterized in that said blind slots are provided with at least two; the blind groove is formed in the first surface of the upper cover, and the blind groove is formed in the second surface of the upper cover.
8. Shell structure for button cells according to any of the claims 1 to 5, characterized in that said blind grooves are provided extending along a straight line; or the blind groove extends along an arc line; the blind groove extends along the fold line.
9. Shell structure for button cells according to any of the claims from 1 to 5, characterized in that said blind grooves are circular; or the blind grooves are arranged in a semicircular shape; or the blind grooves are arranged in a square shape; or the blind grooves are arranged in a triangular shape.
10. A button cell, comprising:
an electrical core assembly;
a casing structure for button cells as in any of the claims 1-9, said electric core assembly being provided inside said housing cavity.
CN202121312792.8U 2021-06-11 2021-06-11 Shell structure for button cell and button cell Active CN215527884U (en)

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Application Number Priority Date Filing Date Title
CN202121312792.8U CN215527884U (en) 2021-06-11 2021-06-11 Shell structure for button cell and button cell

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Application Number Priority Date Filing Date Title
CN202121312792.8U CN215527884U (en) 2021-06-11 2021-06-11 Shell structure for button cell and button cell

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CN215527884U true CN215527884U (en) 2022-01-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023240904A1 (en) * 2022-06-17 2023-12-21 湖北亿纬动力有限公司 Battery cell sealed by grooving and sealing process, and battery module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023240904A1 (en) * 2022-06-17 2023-12-21 湖北亿纬动力有限公司 Battery cell sealed by grooving and sealing process, and battery module

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