CN110767935A - Lithium ion battery with elliptical structure and preparation method thereof - Google Patents
Lithium ion battery with elliptical structure and preparation method thereof Download PDFInfo
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- CN110767935A CN110767935A CN201911225940.XA CN201911225940A CN110767935A CN 110767935 A CN110767935 A CN 110767935A CN 201911225940 A CN201911225940 A CN 201911225940A CN 110767935 A CN110767935 A CN 110767935A
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000005538 encapsulation Methods 0.000 claims abstract description 15
- 238000004806 packaging method and process Methods 0.000 claims abstract description 13
- 239000012785 packaging film Substances 0.000 claims description 24
- 229920006280 packaging film Polymers 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 6
- 229920006255 plastic film Polymers 0.000 claims description 6
- 239000002985 plastic film Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005755 formation reaction Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a lithium ion battery with an oval structure and a preparation method thereof, wherein the battery comprises a battery cell, an encapsulation film coated outside the battery cell, and a positive electrode lug and a negative electrode lug which are arranged on the side wall of the battery cell, wherein the positive electrode lug and the negative electrode lug are parallel to each other and have the same orientation, the cross section of the battery cell is oval, and the positive electrode lug and the negative electrode lug are positioned at the short axis position of the oval. The battery cell is designed to be elliptical, the orientations of the positive electrode lug and the negative electrode lug are set to be the same, the occupied space of packaging can be effectively reduced, the battery cell is convenient to store and package, and the orientations of the positive electrode lug and the negative electrode lug are set on the short shaft position of the ellipse, so that the technical problems that the edge folding position of the soft-package cylindrical battery lug is large in diameter, small in actual utilization space, large in limitation on improvement of energy density of the battery and the like in the prior art can be effectively solved.
Description
Technical Field
The invention relates to the technical field of lithium ions, in particular to a lithium ion battery with an elliptical structure and a preparation method thereof.
Background
Lithium ion batteries have become the mainstream of the battery energy market as having the characteristics of high energy density, rapid charge and discharge, recycling, long service life and the like, and are widely applied to military and civil products. With the development of society, people's requirements for lithium ion batteries are not limited to the reliability and safety of batteries, but have higher and higher requirements for the performance and structure of batteries.
Along with the rise of wearing products, miniaturization and diversification of battery products are more obvious, and meanwhile, as requirements on the endurance capacity of equipment are higher and higher, the requirement is that a manufacturer improves the actual utilization space in the battery products as much as possible so as to improve the energy density on the premise of ensuring the product performance, and meanwhile, the structural design of the battery is carried out by matching with the internal structure of a terminal product.
At present, there are two types of small cylindrical batteries: one is a steel shell structure, the battery with the structure adopts a rigid shell to encapsulate a positive electrode, a negative electrode, a diaphragm and electrolyte, and the rigid shell is usually made of metal materials such as stainless steel or aluminum alloy, so that the material cost is high, the weight is heavy, and dangerous potential safety hazards such as explosion exist; the other type is a soft package structure, and the battery with the structure has the advantages of light weight and good safety performance. The conventional soft-package cylindrical battery has two structures of a positive electrode tab and a negative electrode tab at two ends and a tab at the same end, and the tab at two ends occupies a very large space, so that the actual utilization space is small, the limitation on improving the energy density of the battery is large, and the performance of the battery is particularly convex for a miniaturized cylindrical battery; and the structure of the tab at the same end has low utilization rate of the size of the folded edge position of the tab, and influences the energy density under unit diameter.
Disclosure of Invention
The invention provides a lithium ion battery with an oval structure, aiming at solving the technical problems of large occupied space of a lug, small actual utilization space and the like in the prior art.
The technical scheme of the invention is realized as follows: the utility model provides an oval structure battery of lithium ion, its includes electric core, the cladding at the encapsulation membrane in the electric core outside and set up anodal ear and the negative pole ear at electric core lateral wall, anodal ear and negative pole ear are parallel to each other and the orientation is the same, the cross section of electric core is oval-shaped, anodal ear and negative pole ear are located oval minor axis position department.
Preferably, the positive electrode tab and the negative electrode tab are located on the short axis circumference of the same ellipse.
Preferably, the positive electrode tab and the negative electrode tab are parallel to the axis of the battery core; the positive electrode lug and the negative electrode lug are positioned on the side wall of the battery cell and have the same height.
Preferably, the battery cell is formed by sequentially overlapping and winding a positive plate, a diaphragm and a negative plate; the positive tab is connected with the positive plate, the negative tab is connected with the negative plate, and the positive tab and the negative electrode penetrate through the packaging film and extend out of the packaging film.
Preferably, the packaging film is an aluminum plastic film, and the aluminum plastic film is oval.
Preferably, the outer wall of the packaging film is provided with a tab edge sealing edge for packaging the positive tab and the negative tab; preferably, the edge sealing of the tab is elliptical.
The invention also provides a preparation method of the lithium ion battery with the oval structure, which comprises the following steps:
step S1, connecting a positive tab and a negative tab to one end of the positive tab and the negative tab respectively;
step S2, sequentially overlapping and winding the positive plate, the diaphragm and the negative plate into a battery cell, wherein the positive tab and the negative tab are respectively arranged at the ending ends of the wound positive plate and negative plate;
step S3, processing the battery cell into an elliptical shape, and enabling the positive electrode tab and the negative electrode tab to be at the positions of short axes of the ellipse;
step S4, placing the battery cell in a packaging film for packaging, and sequentially performing liquid injection, formation, molding, capacity grading and edge sealing by cutting;
and S5, cutting and edge sealing, and shaping the positive tab and the negative tab to make the positive tab and the negative tab parallel to the axis direction of the battery cell, thereby obtaining the battery with the elliptical lithium ion structure.
Preferably, in step S4, before the battery cell is placed in the encapsulation film for encapsulation, the positive tab and the negative tab are bent into a horizontal state, where the bending of the positive tab and the negative tab is flush with the edge of the battery cell; and in the process of placing the battery cell in the packaging film for packaging, heat sealing is carried out on the crossing joint of the positive tab and the negative tab and the packaging film by using a heat sealing machine.
The battery cell is designed to be elliptical, the orientations of the positive electrode lug and the negative electrode lug are set to be the same, the occupied space of packaging can be effectively reduced, the battery cell is convenient to store and package, and the orientations of the positive electrode lug and the negative electrode lug are set on the short shaft position of the ellipse, so that the technical problems that the edge folding position of the soft-package cylindrical battery lug is large in diameter, small in actual utilization space, large in limitation on improvement of energy density of the battery and the like in the prior art can be effectively solved.
Drawings
Fig. 1 is a schematic side view of an oval-shaped battery according to an embodiment of the present invention.
Fig. 2 is a schematic side view of another perspective of the battery with an oval structure according to the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the battery cell according to the embodiment of the present invention.
Fig. 4 is another schematic structural diagram of the battery cell according to the embodiment of the present invention.
Fig. 5 is a schematic method flow diagram of the preparation method of the embodiment of the invention.
The reference numbers in the figures are: 10-battery core, 11-positive tab, 12-negative tab, 20-packaging film, 30-short axis position and 40-tab edge sealing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Example one
Referring to fig. 1 to 4, the battery with an oval lithium ion structure provided in this embodiment includes a battery cell 10, an encapsulation film 20 covering the outside of the battery cell, and a positive tab 11 and a negative tab 12 disposed on a side wall of the battery cell, where the positive tab and the negative tab are parallel to each other and have the same orientation, the cross section of the battery cell is oval, and the positive tab and the negative tab are located at a position of a short axis 30 of the oval. Preferably, the outer wall of the packaging film is provided with a tab edge sealing 40 for packaging the positive tab 11 and the negative tab 12; accordingly, the tab sealing edge 40 is preferably oval-shaped.
In one preferred embodiment, the packaging film is preferably an aluminum plastic film, and the aluminum plastic film is elliptical. In this embodiment, the battery cell is formed by sequentially stacking and winding a positive plate, a diaphragm and a negative plate; the positive tab is connected with the positive plate, the negative tab is connected with the negative plate, and the positive tab and the negative electrode penetrate through the packaging film and extend out of the packaging film. Preferably, the positive tab is welded to the positive plate, and the negative tab is welded to the negative plate.
As a preferred embodiment, the positive electrode tab and the negative electrode tab are located on the circumference of the short axis of the same ellipse; the positive electrode lug and the negative electrode lug are parallel to the axis of the battery cell; the positive electrode lug and the negative electrode lug are positioned on the side wall of the battery cell and have the same height. Through such arrangement, the space occupied by the positive electrode lug and the negative electrode lug is smaller, the space utilization rate is effectively improved, and the density of battery energy is larger.
Wherein, fig. 3 is one of them schematic structure diagram of electric core, and in this fig. 3, the encapsulation film has not coated on electric core 10 yet, and electric core 10 is convoluteed by positive plate, diaphragm and negative pole piece superpose in proper order and forms, and positive ear 11 and negative pole ear 12 set up at the ending end of coiling positive plate and negative pole piece, just positive ear and negative pole ear are parallel to each other and the orientation is the same, moreover positive ear and negative pole ear are located oval minor axis position 30 position department. Wherein, the diaphragm is arranged between the positive plate and the insulating plate and is used for playing an insulating role. After the cell is wound, the positive tab 11 and the negative tab 12 are bent into a horizontal shape, as shown in fig. 4, the bent position is flush with the edge of the cell, then the positive tab and the negative tab are bent in opposite directions by 90 degrees according to the position requirements of the positive tab and the negative tab, and the positive tab 11 and the negative tab 12 can be in a horizontal state. And then, heat-sealing the crossing joints of the positive electrode lug and the negative electrode lug with the packaging film by a heat sealing machine, and finally arranging the edge sealing of the electrode lugs for packaging the positive electrode lug 11 and the negative electrode lug 12 on the outer wall of the packaging film to obtain the structure shown in the attached drawing 2. Wherein the heat-sealed edge sealing is 360 degrees to surround the packaging film. In addition, in fig. 3 and fig. 4, since the positive plate, the diaphragm and the negative plate are thin and inconvenient to mark, specific positions of the positive plate, the diaphragm and the negative plate are not specifically marked, and in this embodiment, the positive plate, the diaphragm and the negative plate are sequentially arranged from inside to outside when the battery cell is wound.
Compared with the prior art, the battery with the ion elliptical structure provided by the embodiment of the invention has the advantages that the battery core is arranged in an elliptical shape, the orientations of the positive electrode lug and the negative electrode lug are arranged in the same direction, so that the space occupied by packaging can be effectively reduced, the storage and the packaging are convenient, and the technical problems of large diameter of the edge folding position of the soft-package cylindrical battery lug, small actual utilization space, large limitation on the improvement of the energy density of the battery and the like in the prior art can be effectively solved by arranging the orientations of the positive electrode lug and the negative electrode lug on the short shaft position of the ellipse.
Example two
In this embodiment, a method for manufacturing a battery with an oval lithium ion structure as described in the above embodiments is provided, and as shown in fig. 5, the method includes the following steps:
step S1, connecting a positive tab and a negative tab to one end of the positive tab and the negative tab respectively; in the embodiment, the positive tab and the positive plate, and the negative tab and the negative plate are connected by welding;
step S2, sequentially overlapping and winding the positive plate, the diaphragm and the negative plate into a battery cell, wherein the positive tab and the negative tab are respectively arranged at the ending ends of the wound positive plate and negative plate;
step S3, processing the battery cell into an elliptical shape, and positioning the positive electrode tab and the negative electrode tab at the position of the short axis of the ellipse, as shown in fig. 3;
step S4, placing the battery cell in a packaging film for packaging, and sequentially performing processes of liquid injection, formation, molding, capacity grading, cutting, edge sealing and the like;
and step S5, after cutting and edge sealing, shaping and processing the positive tab and the negative tab to enable the positive tab and the negative tab to be parallel to the axis direction of the battery cell, so as to obtain the lithium ion battery with the elliptical structure, as shown in the attached figure 1. Here, the edge sealing means edge sealing of the tab in example 1.
As a preferred embodiment, in step S4, before the battery cell is placed in the encapsulation film for encapsulation, the positive tab and the negative tab are bent into a horizontal state, where the bent portions of the positive tab and the negative tab are flush with the edge of the battery cell, as shown in fig. 4; in this embodiment, the positive tab and the negative tab are bent to be in a horizontal state in such a manner that the positive tab and the negative tab are bent in opposite directions by 180 °, and then the positive tab and the negative tab are bent in opposite directions by 90 ° to be in a horizontal state according to the position requirement of the negative electrode of the positive tab. In this embodiment, in the process of placing the battery cell in the encapsulation film for encapsulation, the heat sealing machine is used to heat seal the crossing joint between the positive tab and the encapsulation film and between the negative tab and the encapsulation film, wherein the edge sealed by the heat sealing machine is 360 degrees around the encapsulation film.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The battery with the elliptic lithium ion structure is characterized by comprising an electric core (10), a packaging film (20) coated on the outer side of the electric core, and a positive electrode lug (11) and a negative electrode lug (12) which are arranged on the side wall of the electric core, wherein the positive electrode lug and the negative electrode lug are parallel to each other and have the same orientation, the cross section of the electric core is elliptic, and the positive electrode lug and the negative electrode lug are positioned at the position of an elliptic short shaft position (30).
2. The battery of claim 1, wherein the positive electrode tab and the negative electrode tab are located on the circumference of the short axis of the same ellipse.
3. The battery with the elliptical lithium ion structure of claim 2, wherein the positive electrode tab and the negative electrode tab are parallel to the axis of the cell.
4. The battery of claim 4, wherein the positive tab and the negative tab are at the same height on the side wall of the cell.
5. The battery with the elliptical lithium ion structure of claim 1, wherein the battery core is formed by sequentially stacking and winding a positive plate, a diaphragm and a negative plate; the positive tab is connected with the positive plate, the negative tab is connected with the negative plate, and the positive tab and the negative electrode penetrate through the packaging film and extend out of the packaging film.
6. The battery of claim 1, wherein the packaging film is an aluminum-plastic film, and the aluminum-plastic film is elliptical.
7. The battery with an elliptical lithium ion structure according to claim 1, wherein the outer wall of the packaging film is provided with a tab seal (40) for packaging the positive tab and the negative tab.
8. A preparation method of a lithium ion battery with an oval structure comprises the following steps:
step S1, connecting a positive tab and a negative tab to one end of the positive tab and the negative tab respectively;
step S2, sequentially overlapping and winding the positive plate, the diaphragm and the negative plate into a battery cell, wherein the positive tab and the negative tab are respectively arranged at the ending ends of the wound positive plate and negative plate;
step S3, processing the battery cell into an elliptical shape, and enabling the positive electrode tab and the negative electrode tab to be at the positions of short axes of the ellipse;
step S4, placing the battery cell in a packaging film for packaging, and sequentially performing liquid injection, formation, molding, capacity grading and edge sealing by cutting;
and S5, cutting and edge sealing, and shaping the positive tab and the negative tab to make the positive tab and the negative tab parallel to the axis direction of the battery cell, thereby obtaining the battery with the elliptical lithium ion structure.
9. The method of claim 8, wherein in step S4, before the cell is placed in the encapsulation film for encapsulation, the positive tab and the negative tab are bent to a horizontal state, wherein the bent portions of the positive tab and the negative tab are flush with the edge of the cell.
10. The method of claim 8, wherein: in step S4, in the process of placing the battery cell in the packaging film for packaging, the crossing point of the positive tab and the negative tab and the packaging film is heat sealed by a heat sealing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911225940.XA CN110767935A (en) | 2019-12-04 | 2019-12-04 | Lithium ion battery with elliptical structure and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911225940.XA CN110767935A (en) | 2019-12-04 | 2019-12-04 | Lithium ion battery with elliptical structure and preparation method thereof |
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| CN110767935A true CN110767935A (en) | 2020-02-07 |
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| CN201911225940.XA Pending CN110767935A (en) | 2019-12-04 | 2019-12-04 | Lithium ion battery with elliptical structure and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111261926A (en) * | 2020-03-31 | 2020-06-09 | 惠州市竤泰科技有限公司 | Soft package button type lithium ion battery cell assembly and button battery |
| CN111261929A (en) * | 2020-03-31 | 2020-06-09 | 惠州市竤泰科技有限公司 | Electrode assembly for soft-package button type lithium ion battery and button type battery |
| CN111261928A (en) * | 2020-03-31 | 2020-06-09 | 惠州市竤泰科技有限公司 | Soft package button type lithium ion battery cell assembly and button battery |
| CN112736291A (en) * | 2020-12-24 | 2021-04-30 | 惠州市恒泰科技股份有限公司 | Reverse-winding type battery cell packaging method, battery and processing method thereof |
| CN113782803A (en) * | 2021-08-02 | 2021-12-10 | 曙鹏科技（深圳）有限公司 | Manufacturing method of cylindrical soft package battery |
| CN113853703A (en) * | 2020-12-16 | 2021-12-28 | 宁德新能源科技有限公司 | Battery and electronic device with same |
| EP4075556A1 (en) * | 2021-03-31 | 2022-10-19 | Ningde Amperex Technology Ltd. | Battery cell, battery, and electric device |
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| CN105633333A (en) * | 2015-12-30 | 2016-06-01 | 惠州亿纬锂能股份有限公司 | Cylindrical-structure lithium ion battery and preparation method thereof |
| CN105655624A (en) * | 2014-11-28 | 2016-06-08 | 株式会社半导体能源研究所 | Secondary battery and manufacturing method of the same |
| CN210956891U (en) * | 2019-12-04 | 2020-07-07 | 东莞小锂新能源科技有限公司 | Lithium ion battery with elliptical structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111261926A (en) * | 2020-03-31 | 2020-06-09 | 惠州市竤泰科技有限公司 | Soft package button type lithium ion battery cell assembly and button battery |
| CN111261929A (en) * | 2020-03-31 | 2020-06-09 | 惠州市竤泰科技有限公司 | Electrode assembly for soft-package button type lithium ion battery and button type battery |
| CN111261928A (en) * | 2020-03-31 | 2020-06-09 | 惠州市竤泰科技有限公司 | Soft package button type lithium ion battery cell assembly and button battery |
| CN113853703A (en) * | 2020-12-16 | 2021-12-28 | 宁德新能源科技有限公司 | Battery and electronic device with same |
| WO2022126414A1 (en) * | 2020-12-16 | 2022-06-23 | 宁德新能源科技有限公司 | Battery and electronic device having the battery |
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| CN112736291A (en) * | 2020-12-24 | 2021-04-30 | 惠州市恒泰科技股份有限公司 | Reverse-winding type battery cell packaging method, battery and processing method thereof |
| EP4075556A1 (en) * | 2021-03-31 | 2022-10-19 | Ningde Amperex Technology Ltd. | Battery cell, battery, and electric device |
| CN113782803A (en) * | 2021-08-02 | 2021-12-10 | 曙鹏科技（深圳）有限公司 | Manufacturing method of cylindrical soft package battery |
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