CN213278209U - Button cell's sealing washer and button cell - Google Patents
Button cell's sealing washer and button cell Download PDFInfo
- Publication number
- CN213278209U CN213278209U CN202022228719.4U CN202022228719U CN213278209U CN 213278209 U CN213278209 U CN 213278209U CN 202022228719 U CN202022228719 U CN 202022228719U CN 213278209 U CN213278209 U CN 213278209U
- Authority
- CN
- China
- Prior art keywords
- annular
- sealing part
- button cell
- wall
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a seal ring of a button cell, which comprises an annular step arranged at the bottom of an inner wall, a first annular sealing part arranged at one side of the annular step, a second annular sealing part arranged close to the top and a third annular sealing part arranged between the first annular sealing part and the second annular sealing part; the wall thickness H1 of the first annular sealing part is 0.05-0.15 mm, and the wall thickness H2 of the second annular sealing part and the wall thickness H3 of the third annular sealing part are both 0.1-0.2 mm; the utility model also discloses a button cell, including positive casing, negative pole casing, electric core and above-mentioned sealing washer, the sealing washer is installed between the inner wall of positive casing and the outer wall of negative pole casing, the one end that the sealing washer has annular step is installed in positive casing inner wall's bottom, the utility model provides a current button cell can not ensure good sealing performance's technical problem when improving battery energy density.
Description
Technical Field
The utility model relates to a button cell field especially relates to a button cell's sealing washer and button cell.
Background
At present, sealing rings in the fully-sealed steel shell of the button battery are all subjected to thinning treatment, the wall thickness of the sealing rings is uniformly as low as 0.1-0.5 mm, although the thin sealing rings can effectively improve the space utilization rate of the diameter direction of the battery core and improve the energy density of the battery, the compression amount corresponding to the sealing rings is small, so that the sealing performance of the sealing rings is poor, the quality of the button battery core is influenced, the service life difference of the existing button battery is large, and the existing market demand cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned defect among the prior art, provide a button cell's sealing washer and button cell, solve the button cell among the prior art and can not ensure good sealing performance's technical problem when improving battery energy density.
In order to achieve the above object, the present invention provides a seal ring for a button cell, which comprises an annular step arranged at the bottom of an inner wall, a first annular sealing portion arranged at one side of the annular step, a second annular sealing portion arranged near the top, and a third annular sealing portion arranged between the first annular sealing portion and the second annular sealing portion; the wall thickness H1 of first annular seal portion is between 0.05 ~ 0.15mm, the wall thickness H2 of second annular seal portion and the wall thickness H3 of third annular seal portion are both between 0.1 ~ 0.2 mm.
Preferably, the outer diameter of the first annular sealing portion increases linearly to the outer diameter of the third annular sealing portion.
Preferably, the first annular seal portion has the same inner diameter as the third annular seal portion.
Preferably, the second annular seal portion has an inner diameter greater than or equal to an inner diameter of the third annular seal portion.
Preferably, the bottom of the annular step is provided with an annular protrusion protruding inwards.
Compared with the prior art, the utility model provides a pair of button cell's sealing washer's beneficial effect lies in:
the utility model discloses a sealing washer includes the annular step that sets up in the inner wall bottom, during the equipment, places the sealing washer in the inside of positive pole casing, wherein the sealing washer contains the bottom that the annular step is hugged closely to the bottom of positive pole casing, then negative pole casing and positive pole casing pressfitting mutually, after the equipment, this sealing washer is located between the inner wall of positive pole casing and the outer wall of negative pole casing, this annular step plays the effect of supporting the negative pole casing, also is the first layer between negative pole casing and the positive pole casing simultaneously and insulates and the seal area;
in addition, the first annular sealing part arranged on one side of the annular step is a second layer of insulating and sealing area between the negative electrode shell and the positive electrode shell, the second annular sealing part arranged close to the top is a fourth layer of insulating and sealing area between the negative electrode shell and the positive electrode shell, and the third annular sealing part arranged between the first annular sealing part and the second annular sealing part is a third layer of insulating and sealing area between the negative electrode shell and the positive electrode shell, the wall thickness H1 of the first annular sealing part is set to be 0.05-0.15 mm which is thinner, so that the utilization space in the diameter direction of the battery core is increased as much as possible while certain sealing performance is ensured, and the energy density of the battery is improved, and the wall thickness H2 of the second annular sealing part and the wall thickness H3 of the third annular sealing part are both set to be 0.1-0.2 mm which is thicker than that of the first annular sealing part, make the compressive capacity of this sealing washer bigger, make the battery possess more outstanding sealing performance, ensure that the problem of weeping can not appear in the battery, improved the quality of battery greatly, prolonged the life of battery.
The utility model also provides a button cell, it includes one end open-ended anodal casing, one end open-ended negative pole casing and electric core, still includes above-mentioned technical scheme button cell's sealing washer, the sealing washer is installed between anodal casing's inner wall and negative pole casing's outer wall, the bottom at anodal shells inner wall is installed to the one end that the sealing washer has annular step.
Compared with the prior art, the utility model provides a pair of button cell's beneficial effect lies in:
due to the adoption of the sealing ring of the button cell with different wall thicknesses in the technical scheme, the button cell has higher energy density while ensuring excellent sealing performance, and has the advantages of high reliability, stable quality and long service life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an exploded view of a button cell provided in the present invention;
fig. 2 is a cross-sectional view of a seal ring of a button cell provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a button cell, including one end open-ended positive pole casing 6, one end open-ended negative pole casing 7, electricity core 8 and sealing washer 9. Wherein the sealing ring 9 is made of single-layer or multi-layer PP material.
As shown in fig. 1 and fig. 2, the sealing ring 9 includes an annular step 1 disposed at the bottom of the inner wall, during assembly, the sealing ring 9 is disposed inside the positive casing 6, wherein one side of the sealing ring 9 including the annular step 1 is tightly attached to the bottom of the positive casing 6, then the negative casing 7 is press-fitted with the positive casing 6, after assembly, the sealing ring 9 is disposed between the inner wall of the positive casing 6 and the outer wall of the negative casing 7, and the annular step 1 plays a role of supporting the negative casing 7 and is also a first layer of insulation and sealing area between the negative casing 7 and the positive casing 6.
As shown in fig. 1 and 2, the seal ring 9 further includes a first annular seal portion 2 provided on one side of the annular step 1, a second annular seal portion 3 provided near the top, and a third annular seal portion 4 provided between the first annular seal portion 2 and the second annular seal portion 3. Wherein the wall thickness H1 of the first annular sealing part 2 is between 0.05 and 0.15mm, and the wall thickness H2 of the second annular sealing part 3 and the wall thickness H3 of the third annular sealing part 4 are both between 0.1 and 0.2 mm. Wherein the heights of the first, second, and third annular seal portions 2, 3, and 4 are set according to the model of the battery.
Specifically, the first annular sealing part 2 arranged on one side of the annular step is a second layer of insulating and sealing area between the cathode shell 7 and the anode shell 6, the second annular sealing part 3 arranged close to the top is a fourth layer of insulating and sealing area between the cathode shell 7 and the anode shell 6, and the third annular sealing part 4 arranged between the first annular sealing part 2 and the second annular sealing part 3 is a third layer of insulating and sealing area between the cathode shell 7 and the anode shell 6, the wall thickness H1 of the first annular sealing part 2 is set to be 0.05-0.15 mm which is thinner, so that the utilization space in the diameter direction of the battery cell is increased as much as possible while certain sealing performance of the battery is ensured, and the energy density of the battery is improved, the wall thickness H2 of the second annular sealing part 3 and the wall thickness H3 of the third annular sealing part 4 are both set to be 0.1-0.2 mm which is thicker than the first annular sealing part 2, make this sealing washer 9's compressive capacity bigger, make the battery possess more outstanding sealing performance, ensure that the problem of weeping can not appear in the battery, improved the quality of battery greatly, prolonged the life of battery.
More specifically, in the present embodiment, the outer diameter of the first annular seal portion 2 preferably increases linearly to the outer diameter of the third annular seal portion 4, the inner diameter of the first annular seal portion 2 is preferably the same as the inner diameter of the third annular seal portion 4, and the inner diameter of the second annular seal portion 3 is greater than or equal to the inner diameter of the third annular seal portion 4. The above parameter design facilitates the mutual press-fit assembly of the cathode shell 7 and the anode shell 6.
Further, the bottom of the annular step 1 is provided with an annular protrusion 5 protruding inwards. The annular protrusion 5 plays a role in wrapping the battery cell pole piece, namely, plays a role in insulation protection between the negative pole piece on the battery cell 8 and the positive pole shell 6.
In conclusion, due to the adoption of the sealing rings 9 with different wall thicknesses in the technical scheme, the button cell has high energy density while ensuring excellent sealing performance, and has the advantages of high reliability, stable quality and long service life.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (6)
1. The sealing ring of the button cell is characterized by comprising an annular step (1) arranged at the bottom of an inner wall, a first annular sealing part (2) arranged on one side of the annular step (1), a second annular sealing part (3) arranged close to the top, and a third annular sealing part (4) arranged between the first annular sealing part (2) and the second annular sealing part (3);
the wall thickness H1 of the first annular sealing part (2) is 0.05-0.15 mm, and the wall thickness H2 of the second annular sealing part (3) and the wall thickness H3 of the third annular sealing part (4) are both 0.1-0.2 mm.
2. Sealing ring for button cells according to claim 1, characterized in that the outer diameter of the first annular seal (2) increases linearly to the outer diameter of the third annular seal (4).
3. Sealing ring for button cells according to claim 1, characterized in that the inner diameter of the first annular seal (2) is the same as the inner diameter of the third annular seal (4).
4. Sealing ring for button cells according to claim 1, characterized in that the inner diameter of the second annular seal (3) is greater than or equal to the inner diameter of the third annular seal (4).
5. Sealing ring for button cells according to claim 1, characterized in that the annular step (1) is provided at its base with an inwardly protruding annular projection (5).
6. A button cell comprises a positive electrode shell (6) with an opening at one end, a negative electrode shell (7) with an opening at one end and an electric core (8), and is characterized by further comprising a sealing ring of the button cell as claimed in any one of claims 1 to 5, wherein the sealing ring is arranged between the inner wall of the positive electrode shell (6) and the outer wall of the negative electrode shell (7), and one end of the sealing ring with an annular step (1) is arranged at the bottom of the inner wall of the positive electrode shell (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022228719.4U CN213278209U (en) | 2020-10-09 | 2020-10-09 | Button cell's sealing washer and button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022228719.4U CN213278209U (en) | 2020-10-09 | 2020-10-09 | Button cell's sealing washer and button cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213278209U true CN213278209U (en) | 2021-05-25 |
Family
ID=75947786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022228719.4U Active CN213278209U (en) | 2020-10-09 | 2020-10-09 | Button cell's sealing washer and button cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213278209U (en) |
-
2020
- 2020-10-09 CN CN202022228719.4U patent/CN213278209U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214505580U (en) | Cylindrical lithium ion battery | |
| CN108461757B (en) | Cylindrical battery and electrode current collecting assembly and manufacturing method thereof | |
| CN107946486A (en) | New fastening lithium ionic cell housing | |
| CN201478392U (en) | High-power lithium ion power battery with collecting disc | |
| CN109301104B (en) | Cap assembly for cylindrical battery and cylindrical secondary battery | |
| CN209843832U (en) | Liquid metal battery | |
| CN213278209U (en) | Button cell's sealing washer and button cell | |
| CN208706690U (en) | Secondary cell top cover and its secondary cell | |
| CN210403778U (en) | Button cell for improving radial space utilization rate | |
| CN210379217U (en) | Cylindrical battery and battery cap thereof | |
| CN216958261U (en) | Battery and cap thereof | |
| CN215911489U (en) | Button cell | |
| US3791873A (en) | Closure seal for electrochemical cells | |
| CN212907874U (en) | Battery without pole ear | |
| CN209133640U (en) | Deep discharge resistant alkaline battery | |
| CN111864251A (en) | Bean-type battery structure and assembling method thereof | |
| CN208767395U (en) | Alkaline manganese cell negative current collector copper needle | |
| CN112713338A (en) | Anti-corrosion electrode shell of steel-shell button cell, preparation method of anti-corrosion electrode shell, steel-shell button cell and application of steel-shell button cell | |
| CN208767349U (en) | A kind of button cell that heavy-current discharge performance is good | |
| CN213401343U (en) | Cover plate assembly of lithium ion button battery and button battery | |
| CN214043799U (en) | Steel shell battery | |
| CN216671735U (en) | High-performance graphene nickel-metal hydride battery structure | |
| CN212257582U (en) | Bean type battery structure | |
| CN218039732U (en) | Negative electrode base, battery and battery pack | |
| CN218039506U (en) | Insulating sealing ring for lithium battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |