CN111490219B - Cylindrical lithium ion battery roll core structure - Google Patents
Cylindrical lithium ion battery roll core structure Download PDFInfo
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- CN111490219B CN111490219B CN202010164311.7A CN202010164311A CN111490219B CN 111490219 B CN111490219 B CN 111490219B CN 202010164311 A CN202010164311 A CN 202010164311A CN 111490219 B CN111490219 B CN 111490219B
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- Prior art keywords
- roll
- adhesive tape
- side wrapping
- tape
- anode
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 16
- 239000002390 adhesive tape Substances 0.000 claims abstract description 39
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract 2
- 238000007789 sealing Methods 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000011889 copper foil Substances 0.000 claims description 5
- 239000011888 foil Substances 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 235000015110 jellies Nutrition 0.000 claims 1
- 239000008274 jelly Substances 0.000 claims 1
- 238000005457 optimization Methods 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 4
- 101100460844 Mus musculus Nr2f6 gene Proteins 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012945 sealing adhesive Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/597—Protection against reversal of polarity
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- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to a cylindrical lithium ion battery roll core structure. The cylindrical lithium ion battery roll core structure comprises a roll core, wherein the roll core is formed by winding an anode roll sheet, a cathode roll sheet and a diaphragm arranged between the anode roll sheet and the cathode roll sheet, an anode tab is connected with the anode roll sheet and penetrates out of the roll core, a cathode tab is connected with the cathode roll sheet and penetrates out of the end face of the roll core, and protection parts are arranged on the outer surfaces of the anode tab and the cathode tab to prevent the anode tab or the cathode tab from penetrating through the corresponding roll sheet; protective adhesive tapes are wrapped on the outer surfaces of the side walls of the positive electrode lug and the negative electrode lug; the protective adhesive tape is composed of a first side wrapping adhesive tape and a second side wrapping adhesive tape, and the first side wrapping adhesive tape is not connected with the second side wrapping adhesive tape; the protective tape comprises an elastic insulating member; this cylindrical lithium ion battery rolls up core structure, simple structure, convenient operation utilizes the protection sticky tape to protect the roll piece, through the positive and negative pole ear of broad, is convenient for improve the electrochemical properties of battery.
Description
Technical Field
The invention belongs to the technical field of lithium batteries, and particularly relates to a cylindrical lithium ion battery roll core structure.
Background
At present, the application of lithium ion batteries is becoming more and more extensive, and higher requirements are put forward on the performance of the batteries. The cylindrical lithium ion battery has the advantages of standardized production flow, high production efficiency, excellent cycle performance and good consistency, and is widely applied to automobile power batteries in recent years. The positive plate of the cylindrical power lithium ion battery is mainly designed by adopting a middle tab so as to reduce the internal resistance and improve the performance.
For the connection of the winding core and the positive and negative lugs, the positive and negative lugs are generally fixed in the winding core in a welding mode, and a welding contact point is generally small, so that the contact area of the lugs and the shell is small, the internal resistance of the battery is large, the electrochemical performance is poor, and the structure is designed in order to improve the electrochemical performance of the battery and reduce the internal resistance of the battery.
Disclosure of Invention
The invention aims to solve the problems and provide a cylindrical lithium ion battery winding core structure which is simple in structure and reasonable in design.
The invention realizes the purpose through the following technical scheme:
the utility model provides a cylindrical lithium ion battery rolls up core structure, includes rolls up the core, roll up the core and roll up the piece and set up the diaphragm three between the two by anodal book piece, negative pole and constitute by winding up, anodal ear is rolled up the piece with the anodal and is connected, and anodal ear runs through out rolling up the core, the negative pole ear is rolled up the piece with the negative pole and is connected, and the negative pole ear runs through the terminal surface of rolling up the core, anodal ear all is provided with the protection piece with the surface of negative pole ear, prevents anodal ear or negative pole ear to run through corresponding book piece.
As a further optimization scheme of the invention, the outer surfaces of the side walls of the positive electrode tab and the negative electrode tab are respectively wrapped with a protective adhesive tape.
As a further optimized scheme of the invention, the protective adhesive tape is composed of a first side wrapping adhesive tape and a second side wrapping adhesive tape, and the first side wrapping adhesive tape is not connected with the second side wrapping adhesive tape.
As a further optimization of the invention, the protective tape comprises an elastic insulating member.
As a further optimization scheme of the invention, aluminum foil scraps are filled between the first side wrapping tape and the second side wrapping tape of the positive tab.
As a further optimization scheme of the invention, a broken copper foil is filled between the first side wrapping tape and the second side wrapping tape of the negative electrode tab.
As a further optimization scheme of the invention, the upper ends of the first side wrapping tape and the second side wrapping tape are provided with sealing glue.
As a further optimization scheme of the invention, the sealing adhesive is a high-temperature-resistant sealing adhesive.
As a further optimization scheme of the invention, the tail end of the winding core is provided with a termination adhesive tape, the termination adhesive tape is in a C shape, and the tail end of the winding core is sealed by the termination adhesive tape.
The invention has the beneficial effects that: the invention is provided with the anode tab and the cathode tab which are wider, and the side walls of the anode tab and the cathode tab are provided with the protective adhesive tapes, so that the tearing effect of the anode tab and the cathode tab on a rolled sheet or a spacer is effectively prevented, and the influence of short circuit and the like is prevented; the whole device is simple in structure, convenient to operate and flexible to use, the rolled sheet is protected by the protective adhesive tape, and the electrochemical performance of the battery is improved conveniently through the wide anode and cathode lugs.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1 of the present invention;
fig. 3 is a structural schematic diagram of a tab of the invention.
In the figure: 1. a winding core; 2. a positive tab; 3. a negative tab; 4. a protective tape; 41. wrapping an adhesive tape on the first side; 42. wrapping an adhesive tape on the second side; 5. terminating the adhesive tape; 6. and (5) sealing.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
As shown in fig. 1-3, a cylindrical lithium ion battery roll core structure, including rolling up core 1, roll up core 1 and roll up the piece and set up the diaphragm three coiling between the two by anodal book piece, negative pole and roll up the piece and be connected, and anodal ear 2 runs through out roll core 1 with anodal book piece, negative pole ear 3 is connected with the negative pole book piece, and the negative pole ear runs through out the terminal surface of rolling up core 1, anodal ear 2 all is provided with the protection piece with the surface of negative pole ear 3, prevents anodal ear 2 or negative pole ear 3 to run through corresponding book piece.
The outer surfaces of the side walls of the positive electrode lug 2 and the negative electrode lug 3 are respectively coated with a protective adhesive tape 4; the protective tape 4 is composed of a first side wrapping tape 41 and a second side wrapping tape 42, the first side wrapping tape 41 is not connected with the second side wrapping tape 42, and the influence of the first side wrapping tape 41 on the movement of ions in the positive electrode tab 2 or the negative electrode tab 3 is prevented; the protective adhesive tape 4 comprises an elastic insulating part, in the embodiment, the protective adhesive tape 4 comprises an insulating rubber layer and an adhesive layer, and the insulating rubber is used for wrapping the side walls of the positive electrode tab 2 and the negative electrode tab 3, so that the phenomena of short circuit and the like caused by tearing of the rolled sheet or the diaphragm when the side walls of the positive electrode tab 2 and the negative electrode tab 3 cannot be completely matched with the rolled sheet or the diaphragm after the rolled sheet and the diaphragm are rolled up are effectively prevented;
aluminum foil scraps are filled between the first side wrapping tape 41 and the second side wrapping tape 42 of the positive tab 2; a broken copper foil is filled between the first side wrapping tape 41 and the second side wrapping tape 42 of the negative electrode tab 3; the upper ends of the first side wrapping tape 41 and the second side wrapping tape 42 are provided with sealing glue 6; the sealing glue 6 is a high-temperature resistant sealing glue; the sealing glue 6 is sealed at the positions, close to the upper end, of the first side wrapping adhesive tape 41 and the second side wrapping adhesive tape 42, namely, the first side wrapping adhesive tape and the second side wrapping adhesive tape are located above the winding core 1, after the winding sheet and the diaphragm are wound up, when the side walls of the positive electrode tab 2 and the negative electrode tab 3 cannot be matched with the winding sheet or the diaphragm, the space, which is not matched with the positive electrode tab 2, is filled with an aluminum foil, the space, which is not matched with the negative electrode tab 3, is filled with a copper foil, and meanwhile, the sealing glue 6 is used for preventing the filler from leaking. The tail end of the winding core 1 is provided with a termination adhesive tape 5, the termination adhesive tape 5 is in a C shape, and the tail end of the winding core 1 is sealed by the termination adhesive tape 5.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (4)
1. The cylindrical lithium ion battery roll core structure is characterized by comprising a roll core (1), wherein the roll core (1) is formed by winding an anode roll sheet, a cathode roll sheet and a diaphragm arranged between the anode roll sheet and the cathode roll sheet, the battery roll core structure further comprises an anode lug (2) connected with the anode roll sheet and a cathode lug (3) connected with the cathode roll sheet, the anode lug (2) penetrates through the roll core (1), the cathode lug (3) penetrates through the end face of the roll core (1), and the outer surfaces of the anode lug (2) and the cathode lug (3) are both provided with a protection piece to prevent the anode lug (2) or the cathode lug (3) from penetrating through the corresponding roll sheet;
protective adhesive tapes (4) are wrapped on the outer surfaces of the side walls of the positive electrode lug (2) and the negative electrode lug (3) respectively, so that the positive electrode lug (2) and the negative electrode lug (3) are prevented from tearing a rolled sheet or a spacer sheet;
the protective adhesive tape (4) is composed of a first side wrapping adhesive tape (41) and a second side wrapping adhesive tape (42), and the first side wrapping adhesive tape (41) is not connected with the second side wrapping adhesive tape (42);
the protective tape (4) comprises an elastic insulating part;
aluminum foil scraps are filled between the first side wrapping tape (41) and the second side wrapping tape (42) of the positive tab (2);
a broken copper foil is filled between the first side wrapping tape (41) and the second side wrapping tape (42) of the negative electrode tab (3);
and the broken aluminum foil and the broken copper foil are used for filling the corresponding electrodes.
2. The cylindrical lithium ion battery roll core structure of claim 1, characterized in that: the upper ends of the first side wrapping tape (41) and the second side wrapping tape (42) are provided with sealing glue (6).
3. The cylindrical lithium ion battery roll core structure of claim 2, characterized in that: the sealing glue (6) is high-temperature resistant sealing glue.
4. The cylindrical lithium ion battery jelly roll structure of claim 3, wherein: the tail end of the winding core (1) is provided with a termination adhesive tape (5), the termination adhesive tape (5) is in a C shape, and the tail end of the winding core (1) is sealed by the termination adhesive tape (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010164311.7A CN111490219B (en) | 2020-03-11 | 2020-03-11 | Cylindrical lithium ion battery roll core structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010164311.7A CN111490219B (en) | 2020-03-11 | 2020-03-11 | Cylindrical lithium ion battery roll core structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111490219A CN111490219A (en) | 2020-08-04 |
| CN111490219B true CN111490219B (en) | 2022-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010164311.7A Active CN111490219B (en) | 2020-03-11 | 2020-03-11 | Cylindrical lithium ion battery roll core structure |
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| Country | Link |
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| CN (1) | CN111490219B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116525971B (en) * | 2023-06-14 | 2024-02-27 | 江苏中兴派能电池有限公司 | Cylindrical battery with I-shaped mandrel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002231215A (en) * | 2001-01-31 | 2002-08-16 | Sanyo Electric Co Ltd | Weld-sealed battery |
| CN201956416U (en) * | 2010-12-16 | 2011-08-31 | 天津力神电池股份有限公司 | Positive pole piece of lithium ion battery |
| CN202134604U (en) * | 2011-06-20 | 2012-02-01 | 曙鹏科技（深圳）有限公司 | Cell of lithium battery with flexible package and lithium battery with flexible package |
| CN203826492U (en) * | 2014-01-08 | 2014-09-10 | 中山天贸电池有限公司 | Lithium ion battery |
| CN209496943U (en) * | 2018-11-30 | 2019-10-15 | 北京卫蓝新能源科技有限公司 | A kind of positive pole ear of lithium battery safety protection structure and lithium battery |
| CN209880744U (en) * | 2019-05-23 | 2019-12-31 | 东莞市聚和新能源有限公司 | High-rate discharge polymer lithium ion battery with reverse-winding structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120270096A1 (en) * | 2011-04-21 | 2012-10-25 | Liankuan Xu | High-power and large-capacity lithium battery of electric bus |
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2020
- 2020-03-11 CN CN202010164311.7A patent/CN111490219B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002231215A (en) * | 2001-01-31 | 2002-08-16 | Sanyo Electric Co Ltd | Weld-sealed battery |
| CN201956416U (en) * | 2010-12-16 | 2011-08-31 | 天津力神电池股份有限公司 | Positive pole piece of lithium ion battery |
| CN202134604U (en) * | 2011-06-20 | 2012-02-01 | 曙鹏科技（深圳）有限公司 | Cell of lithium battery with flexible package and lithium battery with flexible package |
| CN203826492U (en) * | 2014-01-08 | 2014-09-10 | 中山天贸电池有限公司 | Lithium ion battery |
| CN209496943U (en) * | 2018-11-30 | 2019-10-15 | 北京卫蓝新能源科技有限公司 | A kind of positive pole ear of lithium battery safety protection structure and lithium battery |
| CN209880744U (en) * | 2019-05-23 | 2019-12-31 | 东莞市聚和新能源有限公司 | High-rate discharge polymer lithium ion battery with reverse-winding structure |
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| CN111490219A (en) | 2020-08-04 |
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