CN220306107U - Capacitor cell and capacitor thereof - Google Patents
Capacitor cell and capacitor thereof Download PDFInfo
- Publication number
- CN220306107U CN220306107U CN202321934099.3U CN202321934099U CN220306107U CN 220306107 U CN220306107 U CN 220306107U CN 202321934099 U CN202321934099 U CN 202321934099U CN 220306107 U CN220306107 U CN 220306107U
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- cathode
- anode
- tab
- lugs
- capacitor
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- 239000003990 capacitor Substances 0.000 title claims abstract description 45
- 210000005056 cell body Anatomy 0.000 claims abstract description 47
- 210000004027 cell Anatomy 0.000 claims abstract description 20
- 238000004804 winding Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims description 15
- 238000010030 laminating Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model relates to the technical field of electronic components, in particular to a capacitor cell and a capacitor thereof; comprises a battery core body; the battery cell body is formed by winding an anode body, a separator and a cathode volume layer; the anode body is provided with at least one anode current collector, and at least one anode current collector is electrically connected with two anode lugs; the lengths of the parts of the anode lugs, which are leaked outside the end face of the battery cell body, are unequal; the cathode body is at least provided with one cathode current collector, and at least one cathode current collector is electrically connected with two cathode lugs; the lengths of the parts of the cathode lugs, which are leaked outside the end face of the battery cell body, are unequal; the homopolar lugs arranged by the utility model have different lengths, the homopolar lugs are welded, and then the longer polar lugs are welded on the cover plate by adopting ultrasonic waves, so that the processing process is simplified, the cost is reduced, and the homopolar lug is safe and reliable without using gaskets.
Description
Technical Field
The utility model relates to the technical field of electronic components, in particular to a capacitor cell and a capacitor thereof.
Background
Two conductors close to each other with a layer of non-conductive insulating medium sandwiched between them, constitute a capacitor. When a voltage is applied between the two plates of the capacitor, the capacitor stores a charge. The capacitance of the capacitor is equal in value to the ratio of the amount of charge on one conductive plate to the voltage between the two plates. The basic unit of capacitance of the capacitor is Farad (F); the capacitive element is generally indicated by the letter C in the circuit diagram.
At present, the tab pairs (the purpose of using the tab pairs to increase the current) on the existing capacitor cells are generally equal in length. An electric double layer capacitor as disclosed in chinese patent; the patent number is: 201280008315.X, which provides a capacitor with bipolar ears of equal length; however, when the capacitor cell is connected with the cover plate, two homopolar lugs are required to be welded and fixed, then the lug pairs are perforated, the lug pairs are connected with the cover plate in a riveting mode, and gaskets are required to be added during connection, so that the defects of complex processing process, high cost and the like are caused, the gaskets are easy to leak, and the use quality of the capacitor cell is affected.
Based on this, we propose a capacitor cell and its capacitor.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the capacitor cell and the capacitor thereof, which have the advantages that the homopolar lugs are different in length after the structure is improved, the ultrasonic welding on the cover plate can be realized, the processing process is simplified, the cost is reduced, in addition, a gasket is not required, and the capacitor cell is safe and reliable.
The technical scheme of the utility model is as follows:
a capacitor cell comprises a cell body; the battery cell body is formed by winding an anode body, a separator and a cathode volume layer;
the anode body is provided with at least one anode current collector, and at least one anode current collector is electrically connected with two anode lugs; the lengths of the parts of the anode lugs, which are leaked outside the end face of the battery cell body, are unequal;
the cathode body is at least provided with one cathode current collector, and at least one cathode current collector is electrically connected with two cathode lugs; the lengths of the cathode lugs leaking outside the end face of the battery cell body are unequal.
Further, the plurality of anode tabs comprise a first anode tab fixed on one side of one anode current collector and a second anode tab fixed on one side of the other anode current collector, and the length of the end face part of the first anode tab, which is externally leaked from the battery core body, is larger than or smaller than that of the end face part of the second anode tab, so that the first anode tab and the exposed part of the second anode tab are fixedly connected, and then the first anode tab extends at the end part of the second anode tab or the second anode tab extends at the end part of the first anode tab.
Further, the plurality of cathode tabs comprise a first cathode tab fixed on one side of one cathode collector and a second cathode tab fixed on one side of the other cathode collector, and the length of the end face part of the first cathode tab, which is externally leaked from the battery core body, is larger than or smaller than that of the end face part of the second cathode tab, so that the first cathode tab and the exposed part of the second cathode tab are fixedly connected, and then the first cathode tab extends at the end part of the second cathode tab or the second cathode tab extends at the end part of the first cathode tab.
Further, the anode tab is leaked outside the end face of the battery cell body to be electrically connected; and the cathode lug is externally leaked to the end face part of the battery cell body to be electrically connected.
Further, the first anode tab and the second anode tab are fixed by welding; the first anode tab and the second anode tab are arranged in front-back alignment.
Further, the first cathode tab and the second cathode tab are fixed by welding; the first cathode tab and the second cathode tab are arranged in front-back alignment.
Further, the separator is a diaphragm, and the anode body and the cathode body are staggered through the diaphragm.
Further, the cell body is formed by laminating and winding an anode body, a diaphragm, a cathode body, a diaphragm, an anode body, a diaphragm and a cathode body in sequence; or the separator comprises an anode separator and a cathode separator; the cell body is formed by laminating and winding an anode diaphragm, an anode body, an anode diaphragm, a cathode body and a cathode diaphragm in sequence.
A capacitor according to any one of the above claims, comprising a capacitor case and a cover plate, wherein the cover plate is arranged at an opening of the capacitor case and forms a containing cavity with the capacitor case, the cell body is arranged in the containing cavity, and an anode tab of the cell body is electrically connected with a positive electrode column of the cover plate; the cathode tab is electrically connected with the negative electrode post of the cover plate.
Further, one end of the anode tab of the battery cell body, which is far away from the battery cell body, is welded with the positive electrode column of the cover plate through ultrasonic waves; and one end of the cathode lug, which is far away from the battery cell body, is welded with a negative electrode column of the cover plate through ultrasonic waves.
The beneficial effects of the utility model are as follows:
compared with the prior art, the homopolar lugs in the prior art have the same length, are connected with the cover plate in a perforation riveting mode in the installation process, are also connected with the gasket, and have the defects of complex processing process, high cost and the like, and the gasket is easy to leak out; the homopolar lugs arranged by the utility model have different lengths, and longer lugs are welded on the cover plate by adopting ultrasonic waves after the homopolar lugs are welded, so that the processing process is simplified, the cost is reduced, and the utility model is safe and reliable without using gaskets.
Drawings
FIG. 1 is a schematic diagram of a capacitive cell according to the present utility model;
fig. 2 is a schematic structural diagram of the capacitor of the present utility model.
In the figure, 1, a battery cell body; 2. an anode body; 3. a cathode body; 4. a first anode tab; 5. a second anode tab; 6. a first cathode tab; 7. a second cathode tab; 8. a capacitor housing; 9. a cover plate; 10. a positive electrode column; 11. and a negative electrode column.
Detailed Description
The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:
as shown in fig. 1-2, a capacitor cell comprises a cell body 1; the cell body 1 is formed by laminating and winding an anode body 2, a separator and a cathode body 3; the anode body 2 is provided with at least one anode current collector, and at least one anode current collector is electrically connected with two anode lugs; the lengths of the parts of the anode lugs, which are leaked outside the end face of the battery cell body 1, are unequal; the cathode body 3 is provided with at least one cathode current collector, and at least one cathode current collector is electrically connected with two cathode lugs; the lengths of the parts of the cathode lugs, which are leaked outside the end face of the battery cell body 1, are unequal. The difference between this embodiment and the capacitor provided in patent 201280008315.X is that the anode tabs described in this embodiment are not equal in length, and the cathode tabs are also not equal in length.
In the scheme, the two homopolar anode lugs and the two homopolar cathode lugs are all set to be different in length, after the homopolar two lugs are welded, the longer lugs can be welded on the cover plate by ultrasonic, compared with the prior art in which a perforation riveting mode is adopted, the ultrasonic welding on the cover plate can be realized, the processing process is simplified, the cost is reduced, and the gasket is not required to be used, so that the device is safe and reliable.
It should be noted that, in the prior art, the lengths of the homopolar tabs are equal, and after welding the homopolar tabs, the thickness of the whole tab is increased, so that ultrasonic welding cannot be performed; when the lengths of the lugs are different, the longer lugs after welding can extend out, so that the extending part can be subjected to ultrasonic welding, and the defect that the cover plate is connected by adopting perforation riveting in the prior art is overcome.
As a preferred embodiment; the plurality of anode tabs comprise a first anode tab 4 fixed on one side of one anode current collector and a second anode tab 5 fixed on one side of the other anode current collector, the length of the end face part of the first anode tab 4, which is leaked outside the cell body 1, is larger than or smaller than that of the end face part of the second anode tab 5, which is leaked outside the cell body 1, so that the first anode tab 4 extends at the end part of the second anode tab 5 or the second anode tab 5 extends at the end part of the first anode tab 4 after the exposed parts of the first anode tab 4 and the second anode tab 5 are fixedly connected. It can be understood that when the two anode tabs are the first anode tab 4 and the second anode tab 5, the first anode tab 4 may be a long tab, and the second anode tab 5 may be a short tab; or the first anode tab 4 may be a short tab, and the second anode tab 5 is a long tab; after the two lugs are welded, the extending parts of the long lugs are welded with the cover plate, so that two different structural modes can be formed.
As a preferred embodiment; the cathode tabs comprise a first cathode tab 6 fixed on one side of one cathode collector and a second cathode tab 7 fixed on the other side of the cathode collector, wherein the length of the end face part of the first cathode tab 6, which is leaked outside the cell body 1, is larger than or smaller than that of the end face part of the second cathode tab 7, which is leaked outside the cell body 1, so that the first cathode tab 6 extends at the end part of the second cathode tab 7 or the second cathode tab 7 extends at the end part of the first cathode tab 6 after the exposed parts of the first cathode tab 6 and the second cathode tab 7 are fixedly connected. It can be understood that when two cathode tabs are the first cathode tab 6 and the second cathode tab 7, the first cathode tab 6 may be a long tab and the second cathode tab 7 may be a short tab; or the first cathode tab 6 may be a short tab, and the second cathode tab 7 is a long tab; after the two lugs are welded, the extending parts of the long lugs are welded with the cover plate, so that two different structural modes can be formed.
As a preferred embodiment; the anode lug is leaked outside the end face part of the battery cell body 1 and is electrically connected; the cathode lug is leaked outside the end face of the battery core body 1 to be electrically connected. The anode tab or the cathode tab is conducted with the battery cell body 1 to form a complete loop.
As a preferred embodiment; the first anode tab 4 and the second anode tab 5 are fixed by welding; the first anode tab 4 and the second anode tab 5 are arranged in front-back alignment; the first cathode tab 6 and the second cathode tab 7 are fixed by welding; the first cathode tab 6 and the second cathode tab 7 are arranged in front-back alignment. The welding of the homopolar lugs is also carried out by adopting ultrasonic waves, so that the welding effect of the homopolar lugs is better; in addition, the front-back alignment of homopolar tab sets up not only and is convenient for weld, moreover, can overlap two tabs together, increase electric current.
As a preferred embodiment; the separator is a diaphragm, and the anode body 2 and the cathode body 3 are staggered through the diaphragm. The separator is an insulator, so that the anode body 2 and the cathode body 3 can be insulated, and short circuit is avoided. The cell body 1 is formed by winding an anode body 2-diaphragm-cathode body 3-diaphragm and a diaphragm-anode body 2-diaphragm-cathode body 3 in sequence; or the separator comprises an anode separator and a cathode separator; the cell body 1 is formed by laminating and winding an anode diaphragm, an anode body 2, an anode diaphragm, a cathode body 3 and a cathode diaphragm in sequence. This particular design allows the anode body 2 and the cathode body 3 not to come into contact during winding, ensuring an efficient use of the anode body 2 and the cathode body 3.
A capacitor according to any one of the above claims, comprising a capacitor shell 8 and a cover plate 9, wherein the cover plate 9 is arranged at an opening of the capacitor shell 8 to form a containing cavity with the capacitor shell 8, the cell body 1 is arranged in the containing cavity, and an anode tab of the cell body 1 is electrically connected with a positive electrode column 10 of the cover plate 9; the cathode tab is electrically connected with a negative electrode column 11 of the cover plate 9; one end of the anode tab of the cell body 1, which is far away from the cell body 1, is welded with the positive electrode column 10 of the cover plate 9 through ultrasonic waves; the end of the cathode tab, which is far away from the battery cell body 1, is welded with the negative electrode column 11 of the cover plate 9 through ultrasonic waves. The part is a capacitor forming structure, the anode tab and the cathode tab are respectively connected with the anode and the cathode of the cover plate 9 correspondingly, and the ultrasonic welding mode can be adopted, so that the capacitor is different from the installation mode in the prior art, the processing process is simplified, and the cost is reduced.
The above embodiments are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.
Claims (10)
1. The utility model provides a electric capacity electric core which characterized in that: comprises a battery core body; the battery cell body is formed by winding an anode body, a separator and a cathode volume layer;
the anode body is provided with at least one anode current collector, and at least one anode current collector is electrically connected with two anode lugs; the lengths of the parts of the anode lugs, which are leaked outside the end face of the battery cell body, are unequal;
the cathode body is at least provided with one cathode current collector, and at least one cathode current collector is electrically connected with two cathode lugs; the lengths of the cathode lugs leaking outside the end face of the battery cell body are unequal.
2. A capacitive cell according to claim 1, characterized in that: the plurality of anode tabs comprise a first anode tab fixed on one side of one anode current collector and a second anode tab fixed on one side of the other anode current collector, and the length of the part of the first anode tab, which is leaked outside the end face of the battery core body, is larger than or smaller than that of the part of the second anode tab, which is leaked outside the end face of the battery core body, so that the first anode tab and the exposed part of the second anode tab are fixedly connected, and then the first anode tab extends at the end part of the second anode tab or the second anode tab extends at the end part of the first anode tab.
3. A capacitive cell according to claim 1, characterized in that: the cathode tabs comprise first cathode tabs fixed on one side of one cathode collector and second cathode tabs fixed on one side of the other cathode collector, and the lengths of the end face parts of the first cathode tabs, which are externally leaked from the battery core body, are larger than or smaller than those of the end face parts of the second cathode tabs, so that the first cathode tabs extend at the end parts of the second cathode tabs or the second cathode tabs extend at the end parts of the first cathode tabs after the first cathode tabs and the exposed parts of the second cathode tabs are fixedly connected.
4. A capacitive cell according to claim 1, characterized in that: the anode lug is externally leaked to the end face part of the battery cell body and is electrically connected with the battery cell body; and the cathode lug is externally leaked to the end face part of the battery cell body to be electrically connected.
5. A capacitive cell according to claim 2, characterized in that: the first anode tab and the second anode tab are fixed through welding; the first anode tab and the second anode tab are arranged in front-back alignment.
6. A capacitive cell according to claim 3, characterized in that: the first cathode tab and the second cathode tab are fixed through welding; the first cathode tab and the second cathode tab are arranged in front-back alignment.
7. A capacitive cell according to claim 1, characterized in that: the separator is a diaphragm, and the anode body and the cathode body are staggered through the diaphragm.
8. A capacitive cell according to claim 7, characterized in that: the cell body is formed by laminating and winding an anode body, a diaphragm, a cathode body and a diaphragm, and an anode body, a diaphragm and a cathode body in sequence; or the separator comprises an anode separator and a cathode separator; the cell body is formed by laminating and winding an anode diaphragm, an anode body, an anode diaphragm, a cathode body and a cathode diaphragm in sequence.
9. A capacitor, a capacitor cell according to any one of claims 1-8, characterized by: the capacitor comprises a capacitor shell and a cover plate, wherein the cover plate is arranged at an opening of the capacitor shell and forms an accommodating cavity with the capacitor shell, the battery cell body is arranged in the accommodating cavity, and an anode tab of the battery cell body is electrically connected with a positive electrode column of the cover plate; the cathode tab is electrically connected with the negative electrode post of the cover plate.
10. A capacitor as claimed in claim 9, wherein: one end of the anode tab of the battery cell body, which is far away from the battery cell body, is welded with the positive electrode column of the cover plate through ultrasonic waves; and one end of the cathode lug, which is far away from the battery cell body, is welded with a negative electrode column of the cover plate through ultrasonic waves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321934099.3U CN220306107U (en) | 2023-07-21 | 2023-07-21 | Capacitor cell and capacitor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321934099.3U CN220306107U (en) | 2023-07-21 | 2023-07-21 | Capacitor cell and capacitor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220306107U true CN220306107U (en) | 2024-01-05 |
Family
ID=89344701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321934099.3U Active CN220306107U (en) | 2023-07-21 | 2023-07-21 | Capacitor cell and capacitor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220306107U (en) |
-
2023
- 2023-07-21 CN CN202321934099.3U patent/CN220306107U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |