CN217086724U - Button cell casing, button cell and electronic equipment - Google Patents
Button cell casing, button cell and electronic equipment Download PDFInfo
- Publication number
- CN217086724U CN217086724U CN202220318633.7U CN202220318633U CN217086724U CN 217086724 U CN217086724 U CN 217086724U CN 202220318633 U CN202220318633 U CN 202220318633U CN 217086724 U CN217086724 U CN 217086724U
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- shell
- button cell
- panel
- conductive region
- side wall
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Abstract
The utility model relates to a button cell casing, button cell and electronic equipment, button cell casing includes: a first half shell comprising a first panel and a first sidewall disposed around the first panel; a second half-shell including a second panel and a second sidewall disposed around the second panel; the first side wall is sleeved on the outer side of the second side wall, and an insulating sealing ring is arranged between the first side wall and the second side wall; the anticorrosive coating, first half shell with the internal surface of at least one in the second half shell is equipped with the anticorrosive coating, the anticorrosive coating includes electrically conductive region and encircles the insulating area that electrically conductive region set up.
Description
Technical Field
The utility model relates to a button cell technical field, more specifically, the utility model relates to a button cell casing, button cell and electronic equipment.
Background
The shell of the button cell is made of metal, the shell needs to be in contact with the internal electrolyte, and the electrolyte is in contact with the shell and can corrode. The high-voltage button cell can improve the energy density of the cell, and further improve the capacity of the cell. The electrolyte in the high-voltage button battery is easy to corrode the shell, so that the shell is easily corroded and penetrated by the electrolyte, the shell is damaged, and the phenomenon of leakage of the button battery is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a button cell casing, button cell and electronic equipment.
According to the utility model discloses a first aspect provides a button cell casing, button cell casing includes:
a first half shell comprising a first panel and a first sidewall disposed around the first panel;
a second half-shell including a second panel and a second sidewall disposed around the second panel;
the first side wall is sleeved on the outer side of the second side wall, and an insulating sealing ring is arranged between the first side wall and the second side wall;
the anticorrosive coating, first half shell with the internal surface of at least one in the second half shell is equipped with the anticorrosive coating, the anticorrosive coating includes electrically conductive region and encircles the insulating area that electrically conductive region set up.
Optionally, the conductive region is one of an aluminum layer, a nickel layer, and a copper layer.
Optionally, the conductive region is a sprayed layer or foil.
Optionally, the insulating region is a glue layer.
Optionally, the corrosion protection layer is of unitary construction.
According to a second aspect of the present invention, a button cell is provided, which comprises a button cell housing as defined in any one of the first aspect.
Optionally, the method further comprises:
the battery cell is provided with a first lug and a second lug;
the internal surface of first half shell is equipped with the anticorrosive coating, first utmost point ear is connected with the electrically conductive region on the internal surface of first half shell, second utmost point ear is connected with half shell of second.
Optionally, the first tab is a positive tab.
Optionally, the conductive region is located on the first panel, and the insulating region extends from the first panel to the first sidewall.
Optionally, the corrosion protection layer covers an inner surface of the first half shell.
Optionally, the inner surface of the second half-shell is provided with the corrosion protection layer, and the second pole ear is connected with the second half-shell through a conductive area on the inner surface of the second half-shell.
According to a third aspect of the present invention, there is provided an electronic device comprising a button cell as defined in any one of the second aspects.
The utility model discloses a technological effect lies in, through at first half shell with set up the anticorrosive coating on the internal surface of at least one in the half shell of second, can improve the anticorrosion ability of the regional internal surface in anticorrosive coating place.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is one of the schematic structural diagrams of a button cell in one embodiment of the present disclosure.
Fig. 2 is a second schematic structural diagram of a button cell in an embodiment of the disclosure.
Description of reference numerals:
1. a first half shell; 11. a first panel; 12. a first side wall; 2. a second half shell; 21. a second panel; 22. a second side wall; 3. an insulating seal ring; 4. an anticorrosive layer; 41. a conductive region; 42. an insulating region; 5. an electric core; 50. a through hole; 51. a first tab; 52. and a second tab.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
According to one embodiment of the present disclosure, there is provided a button cell battery case, as shown in fig. 1 and 2, including:
a first half-shell 1, said first half-shell 1 comprising a first panel 11 and a first side wall 12 arranged around said first panel 11.
A second half-shell 2, said second half-shell 2 comprising a second panel 21 and a second side wall 22 arranged around said second panel 21.
The first side wall 12 is sleeved on the outer side of the second side wall 22, and an insulating sealing ring 3 is arranged between the first side wall 12 and the second side wall 22.
In this embodiment, by providing the anticorrosive layer 4 on the inner surface of at least one of the first half shell 1 and the second half shell 2, the anticorrosive ability of the inner surface of the region where the anticorrosive layer 4 is located can be improved.
The conductive region 41 in the anticorrosive layer 4 is a conductor and can conduct electricity. When the button cell shell is used for a button cell, the tab of the button cell is electrically connected with the half shell where the conductive area 41 is located through the conductive area 41, so that the half shell where the conductive area 41 is located forms one of external electrodes of the button cell.
Optionally, one of the first half shell 1 and the second half shell 2 is provided with an anticorrosive layer 4, or both the first half shell 1 and the second half shell 2 are provided with an anticorrosive layer 4.
For example, one of the first half-shell 1 and the second half-shell 2 is provided with an anticorrosive layer 4. Taking the example that the inner surface of the first half-shell 1 is provided with the anticorrosive layer 4, in the button cell in which the button cell shell is located, one tab of the button cell is electrically connected with the first half-shell 1 through the conductive region 41, and the other tab of the button cell is electrically connected with the second half-shell 2. Optionally, the first half-shell 1 serves as an external electrode of the button cell positive electrode. The anticorrosive layer 4 plays an anticorrosive role on the inner surface of the first half-shell 1, and reduces the corrosion of the electrolyte to the first half-shell 1.
For example, the first half-shell 1 and the second half-shell 2 are each provided with an anticorrosive layer 4. One of the tabs of the button cell is electrically connected to the conductive region 41 in the corrosion protection layer 4 on the first half-shell 1, and the other tab is electrically connected to the conductive region 41 in the corrosion protection layer 4 on the second half-shell 2. The corrosion protection layer 4 has a corrosion protection effect on the first half shell 1 and the second half shell 2, and reduces corrosion of the electrolyte on the first half shell 1 and the second half shell 2.
In one embodiment, the conductive region 41 is one of an aluminum layer, a nickel layer, and a copper layer.
In this embodiment, aluminum, nickel and copper each have good conductivity, and a layer structure formed by one of aluminum, nickel and copper is used as the conductive region 41 of the corrosion-resistant layer 4, so that corrosion of the case by the electrolyte can be reduced to improve corrosion resistance of the case, and a structure for electrically connecting the tab to the case can be provided.
In one embodiment, the conductive region 41 is a sprayed layer or foil.
In this embodiment, the conductive areas 41 may be formed by spraying on the inner surface of the housing, or alternatively, a foil may be provided on the inner surface of the housing. For example, the foil is welded to the inner surface of the housing.
In one embodiment, the insulating region 42 is a glue layer.
The glue layer has a good insulating effect, and can effectively isolate electrolyte from the shell, so that the anti-corrosion effect is improved.
Alternatively, the insulating region 42 is formed by spraying a glue layer on the inner surface of the housing.
Alternatively, after the conductive region 41 is provided on the inner surface of the housing, the insulating region 42 is formed by spraying a glue layer on the periphery side of the conductive region 41. For example, the conductive area 41 is disposed on the inner surface of the first half-shell 1, and a glue layer is sprayed around the conductive area 41, so that the areas of the first half-shell 1 except the area of the inner surface covered by the conductive area 41 are all covered by the glue layer.
Optionally, the glue layer covers the edge portion of the conductive area 41.
In one embodiment, the corrosion protection layer 4 is a unitary structure.
In this embodiment, the conductive region 41 and the insulating region 42 form an integral structure, so that there is no gap between the conductive region 41 and the insulating region 42, thereby ensuring the isolation effect of the corrosion protection layer 4 between the electrolyte and the case, and improving the corrosion protection effect.
For example, the insulating region 42 covers the edge of the conductive region 41, so that the insulating region 42 and the conductive region 41 form a unitary structure.
According to an embodiment of the present disclosure, a button cell is provided, as shown in fig. 1 and 2, including a button cell case according to any one of the embodiments of the present disclosure.
In one embodiment, as shown in fig. 1 and 2, the button cell further includes:
the battery cell comprises a battery cell 5, wherein the battery cell 5 is provided with a first pole lug 51 and a second pole lug 52.
The internal surface of first half shell 1 is equipped with anticorrosive coating 4, first utmost point ear 51 is connected with the electrically conductive region 41 on the internal surface of first half shell 1, second utmost point ear 52 is connected with second half shell 2.
The first half-shell 1 forms one of the external electrodes of the button cell through the first tab 51, and the second half-shell 2 forms the other external electrode of the button cell through the second tab 52.
In this embodiment, the corrosion-resistant layer 4 forms a protective effect on the inner surface of the first half-shell 1, and prevents the electrolyte from contacting the first half-shell 1, thereby reducing corrosion to the first half-shell 1 and improving the corrosion-resistant effect.
Optionally, the inner surface of the second half-shell 2 is also provided with an anticorrosive layer 4, and the second tab 52 is electrically connected to the second half-shell 2 through a conductive area of the inner surface of the second half-shell 2.
In one embodiment, the inner surface of the second half-shell 2 is provided with the corrosion protection layer, and the second tab 52 is connected to the second half-shell 2 by an electrically conductive area on the inner surface of the second half-shell 2.
In this exemplary embodiment, the second half-shell 2 forms one of the external electrodes of the button cell via a second tab 52. The anticorrosive coating of half 2 internal surfaces of second half forms the protection to half 2 of second, and the electrolyte can be kept apart to the anticorrosive coating to avoid electrolyte to contact half 2 of second to cause the corruption.
Alternatively, the anticorrosive coating 4 may be provided only on the inner surface of the first half shell 1, or may be provided only on the inner surface of the second half shell 2. It is also possible to provide the anticorrosive coating 4 on both the inner surface of the first half-shell 1 and the inner surface of the second half-shell 2.
In one embodiment, the first tab 51 is a positive tab. The first half-shell 1 forms the positive electrode in the external electrode of the button cell.
In this embodiment, the corrosion protection layer 4 forms a corrosion protection effect on the inner surface of the first half-shell 1. The anode of the button cell is more easily corroded, and the corrosion of the electrolyte to the first half-shell 1 can be effectively reduced by the anticorrosive layer 4.
In one embodiment, as shown in fig. 1 and 2, the conductive region 41 is located on the first panel 11, and the insulating region 42 extends from the first panel 11 to the first sidewall 12.
In this embodiment, the first tab 51 is electrically connected with the first panel 11 through the conductive region 41 to form an electrode of a button cell on the first panel 11. The insulating region 42 serves to insulate and isolate the electrolyte in regions other than the conductive region 41.
Optionally, an insulating region 42 extends from the conductive region 41 to the region where the insulating seal 3 overlaps.
The first side wall 12 is sleeved on the outer side of the second side wall 22, and the insulating sealing ring 3 is located between the first side wall 12 and the second side wall 22. The insulating region 42 extends to the first side wall 12 to overlap with the insulating sealing ring 3, so that the electrolyte is prevented from contacting with the first panel 11 and the first side wall 12, and the corrosion prevention effect is improved.
In one embodiment, the corrosion protection layer 4 covers the inner surface of the first half shell 1.
The conductive region 41 is located on the first panel 11 and the insulating region 42 extends to the first side wall 12 and covers the entire area of the inner surface of the first side wall 12. The contact between the electrolyte and the first half-shell 1 is effectively avoided, the flatness of the inner surface of the first side wall 12 can be guaranteed, the structure formed by the outer edge of the insulating region 42 on the inner surface of the first side wall 12 is prevented from influencing the sleeving and assembling of the first side wall 12 and the second side wall 22, and the assembling difficulty is reduced.
In one embodiment, in the structure of the first half-shell 1 and the second half-shell 2, two tabs of the button cell are arranged corresponding to the two half-shells. On the half shell provided with the corrosion protection layer 4, the projection of the corresponding tab of the half shell on the half shell is located in the conductive area 41 on the half shell.
For example, the projection of the first tab 51 onto the first panel 11 is located in the conductive region 41 on the first half-shell 1.
In one embodiment, the battery cell 5 is provided with a through hole 50. At least a portion of the structure of the tab is disposed opposite the through-hole 50.
Optionally, the conductive region 41 is at least partially disposed opposite to the through hole 50, and the tab corresponding to the conductive region 41 is at least partially located between the conductive region 41 and the through hole 50.
For example, the first half-shell 1 is provided with an anticorrosive coating 4. At least a portion of the structure of the conductive region 41 is disposed opposite the via 50. During the assembly of the button battery, the battery core 5 is assembled into the second half-shell 2 and then the second pole lug 52 is welded to the second half-shell 2 via the through hole 50. After the first half shell 1 is assembled, welding is performed on the outside of the first panel 11, and the first tab 51 and the conductive region 41 inside the first panel 11 are connected to the first tab 51. The position of the through hole 50 may be used as a positioning at the time of soldering.
In one embodiment, the conductive areas 41 may be provided on the inner surface of at least one of the first half-shell 1 and the second half-shell 2 by means of plating, stamping or riveting.
According to an embodiment of the present disclosure, an electronic device is provided, which includes the button cell according to any one of the embodiments of the present disclosure.
The electronic equipment has the technical effects brought by the button battery.
In the above embodiments, the differences between the embodiments are described in emphasis, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in consideration of brevity of the text.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (12)
1. A button cell housing, comprising:
a first half-shell comprising a first panel and a first sidewall disposed around the first panel;
a second half-shell including a second panel and a second sidewall disposed around the second panel;
the first side wall is sleeved on the outer side of the second side wall, and an insulating sealing ring is arranged between the first side wall and the second side wall;
the anticorrosive coating, first half shell with the internal surface of at least one in the second half shell is equipped with the anticorrosive coating, the anticorrosive coating includes electrically conductive region and encircles the insulating area that electrically conductive region set up.
2. The button cell housing according to claim 1, wherein the conductive region is one of an aluminum layer, a nickel layer and a copper layer.
3. Button cell housing according to claim 2, characterized in that the electrically conductive area is a sprayed layer or a foil.
4. Button cell housing according to claim 1, characterized in that the insulating region is a glue layer.
5. Button cell housing according to claim 1, characterized in that the corrosion protection layer is of one-piece construction.
6. Button cell, characterized in that it comprises a button cell housing according to one of claims 1 to 5.
7. The button cell as defined in claim 6, further comprising:
the battery cell is provided with a first electrode lug and a second electrode lug;
the internal surface of first half shell is equipped with the anticorrosive coating, first utmost point ear is connected with the electrically conductive region on the internal surface of first half shell, the second utmost point ear is connected with half shell of second.
8. The button cell according to claim 7, wherein the first tab is a positive tab.
9. The button cell of claim 7, wherein the conductive region is located on the first panel and the insulating region extends from the first panel to the first sidewall.
10. The button cell according to claim 7, wherein the corrosion protection layer covers an inner surface of the first half shell.
11. A button cell according to claim 7, wherein the inner surface of the second half-shell is provided with the corrosion protection layer, and the second pole lug is connected to the second half-shell via an electrically conductive region on the inner surface of the second half-shell.
12. An electronic device, characterized in that it comprises a button cell according to any one of claims 6 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220318633.7U CN217086724U (en) | 2022-02-16 | 2022-02-16 | Button cell casing, button cell and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220318633.7U CN217086724U (en) | 2022-02-16 | 2022-02-16 | Button cell casing, button cell and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217086724U true CN217086724U (en) | 2022-07-29 |
Family
ID=82544614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220318633.7U Active CN217086724U (en) | 2022-02-16 | 2022-02-16 | Button cell casing, button cell and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217086724U (en) |
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2022
- 2022-02-16 CN CN202220318633.7U patent/CN217086724U/en active Active
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