CN116705515A - Winding battery core and super capacitor with same - Google Patents
Winding battery core and super capacitor with same Download PDFInfo
- Publication number
- CN116705515A CN116705515A CN202310740586.4A CN202310740586A CN116705515A CN 116705515 A CN116705515 A CN 116705515A CN 202310740586 A CN202310740586 A CN 202310740586A CN 116705515 A CN116705515 A CN 116705515A
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- China
- Prior art keywords
- pole piece
- double
- pole
- electrically connected
- electric
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 54
- 238000004804 winding Methods 0.000 title abstract description 28
- 239000002131 composite material Substances 0.000 claims abstract description 36
- 239000011888 foil Substances 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 2
- 239000013543 active substance Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 239000000178 monomer Substances 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000011149 active material Substances 0.000 description 3
- 238000000338 in vitro Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004966 Carbon aerogel Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
-
- 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
- Y02E60/13—Energy storage using capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a winding battery core and a super capacitor with the same, wherein at least two double-electric-layer composites are stacked and wound to form a cylindrical core structure, at least two double-electric-layer composites are connected in series, at the same time, a first pole piece of one of the innermost double-electric-layer composite and the outermost double-electric-layer composite is electrically connected with a first pole lug extending out of the cylindrical core, a second pole piece of the other double-electric-layer composite is electrically connected with a second pole lug extending out of the cylindrical core, and the rest of the first pole pieces and the rest of the second pole pieces are sequentially connected in pairs so as to connect at least two double-electric-layer composites in series, so that the super capacitor can generate at least twice voltage as the super capacitor basically adopting the existing double-electric-layer battery core, and the super capacitor is suitable for use environments with higher voltage requirements. Because the invention does not need to carry out external serial connection on at least two existing super capacitors like the prior art, the complex external serial connection procedure is omitted, the production efficiency is higher, and the corresponding production cost is low.
Description
Technical Field
The invention relates to the technical field of supercapacitors, in particular to a winding battery cell and a supercapacitor with the winding battery cell.
Background
The super capacitor is called an electric double layer capacitor, and is a novel component for storing energy through an interface double layer formed between two electrode plates and electrolyte. The super capacitor can be divided into a carbon electrode double-layer super capacitor, a metal oxide electrode super capacitor and an organic polymer electrode super capacitor according to different electrode materials.
The voltage of the existing super capacitor monomer is generally 2.5-3.3V, and in some use scenes, the working voltage of the electronic components is larger than the rated voltage of the super capacitor monomer. In order to meet the use requirement, in the prior art, according to the voltage value required by the electronic components, a preset number of super capacitor monomers are connected in series to form a super capacitor module with corresponding multiple voltage, for example, after two super capacitor monomers are connected in series, the voltage of 5-5.6V can be provided, and the larger the number of the super capacitor monomers connected in series is, the larger the voltage can be provided.
However, the more super capacitor monomers in series, the larger the occupied space of the formed super capacitor module is, each super capacitor is fixedly connected and conductive, the connection of each super capacitor and each super capacitor needs to be realized through the bus circuit board, the super capacitor is mainly connected with the bus circuit board through bolts to lock the single super capacitor onto the bus board, the positive and negative directions of the super capacitors of the monomers have strict corresponding relation with the design of the bus board, the structure is complex, the installation difficulty is high, the maintenance operation is complex, and the disassembly and the maintenance are inconvenient.
Disclosure of Invention
The invention mainly aims to provide a winding battery core and a super capacitor with the winding battery core, and aims to optimize a series process of the super capacitor and reduce the occupied space when a plurality of super capacitors are connected in series.
In order to achieve the above-mentioned objective, the present invention provides a winding battery core, which comprises at least two electric double layer composites, at least two electric double layer composites are sequentially stacked and wound together to form a circular or square columnar core, the electric double layer composites comprise a first pole piece, a first diaphragm, a second pole piece and a second diaphragm which are sequentially stacked from inside to outside, a first pole piece of one of the innermost electric double layer composite and the outermost electric double layer composite is electrically connected with a first pole lug extending out of the columnar core, a second pole piece of the other electric double layer composite is electrically connected with a second pole lug extending out of the columnar core, and the other first pole pieces and the other second pole pieces are sequentially electrically connected in pairs.
The invention also provides a super capacitor, which comprises a winding electric core, wherein the winding electric core is the winding electric core.
The invention breaks through the structural limitation that the winding battery core of the traditional super capacitor has only two layers of electrodes, creatively stacks and winds at least two double-electric-layer composites to form a round or square columnar core structure, meanwhile, a first pole piece of one of the innermost double-electric-layer composite and the outermost double-electric-layer composite is electrically connected with a first pole lug extending out of the columnar core, a second pole piece of the other is electrically connected with a second pole lug extending out of the columnar core, and the rest of the first pole pieces and the rest of the second pole pieces are electrically connected in sequence in pairs so as to connect at least two double-electric-layer composites in series, thereby the super capacitor adopting the winding battery core can generate voltage which is at least twice that of the super capacitor adopting the traditional double-electric-layer composite, and the super capacitor is suitable for the use environment with higher voltage requirement. Meanwhile, at least two double-electric-layer composite bodies are stacked and wound to form a single columnar core body and finally placed in a capacitor shell, so that the super capacitor adopting the winding electric core can provide at least twice of the voltage for the existing super capacitor under the condition of not increasing the volume or increasing the volume by a small margin. In addition, the voltage of the super capacitor adopting the winding battery core is at least twice as high as that of the existing super capacitor, so that the use requirement of higher voltage is met, at least two existing super capacitors are not required to be connected in series in vitro like the prior art, the complex external series connection procedure is omitted, the production efficiency is higher, and the corresponding production cost is low.
Drawings
FIG. 1 is a partially exploded view of a first embodiment of the present invention;
FIG. 2 is an expanded view of the first embodiment of the present invention;
FIG. 3 is an exploded view of FIG. 2;
FIG. 4 is a partially expanded view of a second embodiment of the present invention;
FIG. 5 is an expanded view of a second embodiment of the present invention;
FIG. 6 is an exploded view of FIG. 5;
fig. 7 is a schematic view of the first tab and the second tab as the lead pins.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the embodiment of the present invention, directional indications (such as up, down, left, right, front, rear, top, bottom, inner, outer, vertical, lateral, longitudinal, counterclockwise, clockwise, circumferential, radial, axial … …) are referred to, and the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first" or "second" etc. in the embodiments of the present invention, the description of "first" or "second" etc. is only for descriptive purposes, and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a winding cell.
In the embodiment of the invention, as shown in fig. 1 to 7, the winding core includes at least two electric double layer composites, at least two electric double layer composites are sequentially stacked and wound together to form a circular or square columnar core, the electric double layer composites include a first pole piece 3, a first diaphragm 4, a second pole piece 1 and a second diaphragm 2 sequentially stacked from inside to outside, a first pole piece 3 of one of the innermost electric double layer composite 100 and the outermost electric double layer composite 100 is electrically connected with a first tab 5 extending out of the columnar core, a second pole piece 1 of the other electric double layer composite is electrically connected with a second tab 6 extending out of the columnar core, and the other first pole pieces 3 and the other second pole pieces 1 are sequentially electrically connected in pairs. It should be noted that the inner and outer directions are based on the center line of the columnar core body, and are the directions approaching the center line of the columnar core body and the directions separating from the core column structure.
The invention breaks through the structural limitation that the winding battery core of the traditional super capacitor has only two layers of electrodes, creatively stacks and winds at least two double-electric-layer composites to form a columnar core structure, meanwhile, a first pole piece of one of the innermost double-electric-layer composite and the outermost double-electric-layer composite is electrically connected with a first pole lug extending out of the columnar core, a second pole piece of the other one is electrically connected with a second pole lug extending out of the columnar core, and the other first pole pieces and the second pole pieces are electrically connected in sequence in pairs so as to connect at least two double-electric-layer composites in series, thereby the super capacitor adopting the winding battery core can generate at least twice voltage as the super capacitor adopting the traditional double-electric-layer composite, and is suitable for the use environment with higher voltage requirement. Meanwhile, at least two double-electric-layer composite bodies are stacked and wound to form a single columnar core body and finally placed in a capacitor shell, so that the super capacitor adopting the winding electric core can provide at least twice of the voltage for the existing super capacitor under the condition of not increasing the volume or increasing the volume by a small margin. In addition, the voltage of the super capacitor adopting the winding battery core is at least twice as high as that of the existing super capacitor, so that the use requirement of higher voltage is met, at least two existing super capacitors are not required to be connected in series in vitro like the prior art, a complex external series connection procedure (see the background art) is omitted, the production efficiency is higher, and the corresponding production cost is low.
It will be appreciated that the first membrane 4 and the second membrane 2 may be made of insulating plastic or paper, and the like, and the specific length and width of the sheet structure may be determined according to the needs, so as to ensure the normal working needs of the overall supercapacitor.
It will be appreciated that the polarities of the first pole piece 3 and the second pole piece 1 are determined according to the use scenario, that is, the first pole piece 3 may be a positive pole piece or a negative pole piece, and accordingly, when the first pole piece 3 is a positive pole piece, the second pole piece 1 is a negative pole piece, and when the first pole piece 3 is a negative pole piece, the second pole piece 1 is a positive pole piece.
Specifically, in the present embodiment, as shown in fig. 1 to 7, the number of the electric double layer complex 100 is two.
Specifically, in the first embodiment, as shown in fig. 4 to 6, the first tab 5 protruding from the columnar core is electrically connected to the first pole piece 3 of the electric double layer complex 100 located on the inner side, and the second tab 6 protruding from the columnar core is electrically connected to the second pole piece 1 of the electric double layer complex 100 located on the outer side. At this time, the second electrode sheet 1 of the electric double layer complex 100 located at the inner side is electrically connected to the first electrode sheet 3 of the electric double layer complex 100 located at the outer side.
In the second embodiment, as shown in fig. 1 to 3, the second tab 1 of the electric double layer complex 100 located on the inner side is electrically connected with the second tab 6 protruding from the columnar core, and the first tab 5 protruding from the columnar core is electrically connected with the first pole piece 3 of the electric double layer complex 100 located on the outer side. At this time, the first electrode sheet 3 of the electric double layer complex 100 located at the inner side is electrically connected to the second electrode sheet 1 of the electric double layer complex 100 located at the outer side.
Specifically, one end of the first pole piece 3 and the second pole piece 1 which are electrically connected in the width direction (corresponding to the axial direction of the columnar core) extends out of the first diaphragm 4 and/or the second diaphragm 2, and is electrically connected, and the first pole piece 3 and the second pole piece 1 which are electrically connected in a laser welding, ultrasonic or riveting mode.
Specifically, the extending directions of the first tab 5 and the second tab 6 are opposite to the extending directions of the first pole piece 3 and the second pole piece 1.
In the embodiment of the present invention, as shown in fig. 3 and 6, each of the first pole piece 3 and the second pole piece 1 includes a sheet-shaped current collector and an active material layer 7 disposed on the surface of the current collector. Specifically, the active material layer 7 is one or more of activated carbon, carbon fiber, carbon aerogel and carbon nanotube. The current collector is made of metal foil with good conductivity and softer texture, such as one or more of aluminum foil, copper foil or nickel foil.
Specifically, as shown in fig. 3 and 6, the portion of the first and second electrode sheets 3 and 1 extending out of the first and/or second separator 4 and 2 and electrically connected thereto is a portion of the current collector, which is not provided with an active material.
Specifically, the first tab 5 and the second tab 6 are conductive foils made of conductive materials or conductive pins made of conductive metals, and when the conductive pins are used, the first tab 5 and the second tab 6 are long conductive pins and short conductive pins respectively, or the first tab 5 and the second tab 6 are short conductive pins and long conductive pins respectively.
Specifically, when the first tab 5 and the second tab 6 are foil conductors, the number of the first tab 5 and the second tab 6 is one or more, and when the number of the first tab is more than one, the first tabs 5 are distributed at intervals along the length direction of the first pole piece or the second pole piece, and the first tabs 5 are electrically connected after the columnar core is formed; the second lugs 6 are distributed at intervals along the length direction of the first pole piece or the second pole piece, and the second lugs 6 are electrically connected after the columnar core body is formed.
Specifically, when the first tab and the second tab are foil guides, the foil guides are in a strip-shaped sheet structure as a whole.
Specifically, when the first pole piece or the second pole piece is provided with the first pole lug or the second pole lug, the size of the first pole piece or the second pole piece is smaller than that of the first diaphragm or the second diaphragm.
The invention also provides a super capacitor, which comprises a winding electric core, wherein the specific structure of the winding electric core is shown in the embodiment, and the super capacitor adopts all the technical schemes of all the embodiments of the winding electric core, so that the super capacitor at least has all the beneficial effects brought by the technical schemes of the winding electric core, and the description is omitted.
It can be appreciated that the supercapacitor mainly further comprises a housing, a sealing cover, an electrolyte and other components, the winding battery core is arranged in the housing and sealed by the sealing cover, the first tab and the second tab extend out of the housing, and as the specific structure of the housing, the sealing cover and the electrolyte and the assembly mode of the winding battery core, the housing, the sealing cover and the electrolyte are in various embodiments in the prior art, the specific structure of the housing, the sealing cover and the electrolyte and the assembly mode of the winding battery core, the housing, the sealing cover and the electrolyte are not repeated herein.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. A coiled electrical core, characterized by: the double-layer composite structure comprises at least two double-layer composites, wherein at least two double-layer composites are sequentially stacked and are wound together to form a round or square columnar core, each double-layer composite comprises a first pole piece (3), a first diaphragm (4), a second pole piece (1) and a second diaphragm (2) which are sequentially stacked from inside to outside, the first pole piece (3) of one of the innermost double-layer composites (100) and the outermost double-layer composites (100) is electrically connected with a first pole lug (5) extending out of the columnar core, the second pole piece (1) of the other is electrically connected with a second pole lug (6) extending out of the columnar core, and the rest of the first pole pieces (3) and the rest of the second pole pieces (1) are sequentially electrically connected in pairs.
2. The wound cell of claim 1, wherein: the number of the electric double layer complex (100) is two.
3. The wound cell of claim 2, wherein: the first pole piece (3) of the double electric layer complex (100) positioned at the inner side is electrically connected with a first pole lug (5) extending out of the columnar core body, and the second pole piece (1) of the double electric layer complex (100) positioned at the outer side is electrically connected with a second pole lug (6) extending out of the columnar core body.
4. The wound cell of claim 2, wherein: the second pole piece (1) of the double electric layer complex (100) positioned at the inner side is electrically connected with the second pole lug (6) extending out of the columnar core body, and the first pole piece (3) of the double electric layer complex (100) positioned at the outer side is electrically connected with the first pole lug (5) extending out of the columnar core body.
5. A wound cell as claimed in any one of claims 2 to 4, wherein: one end of the first pole piece (3) and one end of the second pole piece (1) which are electrically connected in the width direction extend out of the first diaphragm (4) and/or the second diaphragm (2) and are electrically connected.
6. The wound cell of claim 5, wherein: the extending directions of the first pole lug (5) and the second pole lug (6) are opposite to the extending directions of the first pole piece (3) and the second pole piece (1).
7. The wound cell of claim 5, wherein: the first pole piece (3) and the second pole piece (1) comprise a flaky current collector and an active substance layer (7) arranged on the surface of the current collector.
8. The wound cell of claim 7, wherein: the parts of the first pole piece (3) and the second pole piece (1) extending out of the first diaphragm (4) and/or the second diaphragm (2) and electrically connected with each other are part of the current collector.
9. The wound cell of claim 1, wherein: the first electrode lug (5) and the second electrode lug (6) are conducting foils made of conducting materials or conducting pins made of conducting metals, and when the conducting pins are used, the first electrode lug (5) and the second electrode lug (6) are respectively long conducting pins and short conducting pins, or the first electrode lug (5) and the second electrode lug (6) are respectively short conducting pins and long conducting pins.
10. The utility model provides a super capacitor which characterized in that: comprising a wound cell according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310740586.4A CN116705515A (en) | 2023-06-20 | 2023-06-20 | Winding battery core and super capacitor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310740586.4A CN116705515A (en) | 2023-06-20 | 2023-06-20 | Winding battery core and super capacitor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116705515A true CN116705515A (en) | 2023-09-05 |
Family
ID=87844891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310740586.4A Pending CN116705515A (en) | 2023-06-20 | 2023-06-20 | Winding battery core and super capacitor with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116705515A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1819081A (en) * | 2006-02-27 | 2006-08-16 | 东莞新能源电子科技有限公司 | Hyper-capacitor with high running voltage and production thereof |
| CN116247280A (en) * | 2023-02-14 | 2023-06-09 | 湖南钠方新能源科技有限责任公司 | Winding cell structure and secondary battery |
-
2023
- 2023-06-20 CN CN202310740586.4A patent/CN116705515A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1819081A (en) * | 2006-02-27 | 2006-08-16 | 东莞新能源电子科技有限公司 | Hyper-capacitor with high running voltage and production thereof |
| CN116247280A (en) * | 2023-02-14 | 2023-06-09 | 湖南钠方新能源科技有限责任公司 | Winding cell structure and secondary battery |
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