CN218975531U - Soft package battery - Google Patents
Soft package battery Download PDFInfo
- Publication number
- CN218975531U CN218975531U CN202223087325.7U CN202223087325U CN218975531U CN 218975531 U CN218975531 U CN 218975531U CN 202223087325 U CN202223087325 U CN 202223087325U CN 218975531 U CN218975531 U CN 218975531U
- Authority
- CN
- China
- Prior art keywords
- metal conductor
- cylindrical
- utmost point
- aluminum
- core
- 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.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model relates to the technical field of batteries, and particularly provides a soft package battery. In order to solve the problem that the existing cylindrical soft-package battery is easy to wrinkle when being packaged by an aluminum plastic film, the soft-package battery comprises: the soft package battery includes rolls up the core, utmost point ear subassembly and plastic-aluminum membrane, roll up the core and including interior positive electrode ear and interior negative electrode ear, utmost point ear subassembly includes cylindric glue film and metal conductor, metal conductor runs through in cylindric glue film, utmost point ear subassembly is provided with two sets of, the first end and the interior positive electrode ear of the metal conductor of first group utmost point ear subassembly are connected, the cylindric glue film is extended to the second end, the first end and the interior negative electrode ear of the metal conductor of second group utmost point ear subassembly are connected, the cylindric glue film is extended to the second end, the plastic-aluminum membrane encloses to establish in the outside of rolling up the core, the both ends of plastic-aluminum membrane respectively with the cylindric glue film of first group utmost point ear subassembly and the cylindric glue film sealing connection of second group utmost point ear subassembly. The aluminum plastic film and the side face of the cylindrical glue layer are subjected to heat sealing, so that the aluminum plastic film can be prevented from being wrinkled, and the flatness of the aluminum plastic film is guaranteed.
Description
Technical Field
The utility model relates to the technical field of batteries, and particularly provides a soft package battery.
Background
The existing soft-pack battery has great advantages compared with hard-shell batteries, such as: the soft package battery is packaged by adopting an aluminum plastic film in structure, and when the safety problem occurs, the soft package battery generally blows air to crack and does not explode like a steel shell or an aluminum shell battery core; the weight of the soft package battery is 40% lighter than that of a steel shell lithium battery with the same capacity, and 20% lighter than that of an aluminum shell lithium battery; the internal resistance of the soft package battery is smaller than that of the lithium battery, so that the self-consumption of the battery can be greatly reduced; the cycle performance is good, the cycle life of the soft-package battery is longer, and the cycle attenuation of 100 times is 4% -7% less than that of the aluminum shell; the design is flexible, the appearance is changeable, the shape is arbitrary, the thickness can be thinner, the customization can be realized according to the requirement of a user, and a new battery cell model is developed.
The traditional cylindrical soft-package battery core is mainly divided into two types, wherein one type is a cylindrical punching pit, an upper cylindrical aluminum plastic film and a lower cylindrical aluminum plastic film are sealed to form a cavity, and the other type is a semi-cylindrical punching pit, and a left semi-cylindrical aluminum plastic film and a right semi-cylindrical aluminum plastic film are sealed to form a cavity. However, because the pit punching depth of the aluminum plastic film is limited, the limiting pit punching depth of the aluminum plastic film on a power product is less than 10mm, the capacity and the energy density of the soft-package cylindrical battery are limited, the waste of materials is also caused, and meanwhile, the aluminum plastic film is easy to wrinkle when in pit punching and edge sealing. In addition, there is a cylinder soft package battery, and the plastic-aluminum membrane of battery encloses in the electric core outside, and the top is kneaded the encapsulation through the plastic-aluminum membrane, and this kind of setting mode also makes the plastic-aluminum membrane take place the fold very easily when the encapsulation.
Accordingly, a new soft-pack battery is needed in the art to solve the problem that the existing cylindrical soft-pack battery is easy to wrinkle when being packaged by an aluminum plastic film.
Disclosure of Invention
The utility model aims to solve the technical problem that the existing cylindrical soft-package battery is easy to wrinkle when being packaged by an aluminum plastic film.
In a first aspect, the utility model provides a soft package battery, which comprises a winding core, a tab assembly and an aluminum plastic film, wherein the winding core comprises an inner positive electrode tab and an inner negative electrode tab, the tab assembly comprises a cylindrical adhesive layer and a metal conductor, the metal conductor penetrates through the cylindrical adhesive layer, the tab assembly is provided with two groups, a first end of the metal conductor of the tab assembly of the first group is connected with the inner positive electrode tab, a second end of the metal conductor of the tab assembly of the first group extends out of the cylindrical adhesive layer, a first end of the metal conductor of the tab assembly of the second group is connected with the inner negative electrode tab, the second end of the metal conductor of the tab assembly of the second group extends out of the cylindrical adhesive layer, the aluminum plastic film is arranged on the outer side of the winding core in a surrounding mode, and two ends of the aluminum plastic film are respectively connected with the cylindrical adhesive layer of the tab assembly of the first group and the cylindrical adhesive layer of the tab assembly of the second group in a sealing mode.
In the preferable technical scheme of the soft package battery, the cylindrical glue layer is provided with a liquid injection hole.
In the preferable technical scheme of the soft package battery, two ends of the aluminum plastic film are connected with the cylindrical adhesive layer through heat sealing.
In a preferred embodiment of the above-described pouch battery, the metal conductor is provided in a sheet shape or a rod shape.
In the preferable technical scheme of the soft package battery, the winding core is cylindrical.
The utility model also provides a soft package battery, which comprises a winding core, a tab assembly and an aluminum plastic film, wherein the first end of the winding core comprises an inner positive electrode tab and an inner negative electrode tab, the tab assembly comprises a cylindrical adhesive layer, a metal conductor and a sealing piece, the metal conductor comprises a first metal conductor and a second metal conductor, the first metal conductor and the second metal conductor penetrate through the cylindrical adhesive layer, the first end of the first metal conductor is connected with the positive electrode tab, the first end of the second metal conductor is connected with the negative electrode tab, the second end of the first metal conductor and the second end of the second metal conductor extend out of the cylindrical adhesive layer, the second end of the winding core is provided with the sealing piece, the aluminum plastic film is arranged on the outer side of the winding core in a surrounding mode, the first end of the aluminum plastic film is in sealing connection with the cylindrical adhesive layer, and the second end of the aluminum plastic film is in sealing connection with the sealing piece.
In the preferable technical scheme of the soft package battery, the cylindrical glue layer is provided with a liquid injection hole.
In the preferable technical scheme of the soft-pack battery, the sealing member is cylindrical, and the diameter of the section of the sealing member is equal to the diameter of the section of the cylindrical adhesive layer.
In the preferred technical scheme of the soft package battery, the first end of the aluminum plastic film is connected with the cylindrical adhesive layer through heat sealing, and the second end of the aluminum plastic film is connected with the sealing piece through heat sealing.
In the preferable technical scheme of the soft package battery, the winding core is cylindrical.
Under the condition of adopting the technical scheme, the utility model can seal the two ends of the aluminum plastic film with the cylindrical adhesive layers of the first lug component and the second lug component respectively through hot melting, or seal one end of the aluminum plastic film with the cylindrical adhesive layer and seal the other end with the sealing piece, at the moment, the sealing of the soft package battery can be realized without punching pits on the aluminum plastic film, and the aluminum plastic film is not required to be bent in the edge sealing process, so that the possibility of wrinkling of the aluminum plastic film is reduced.
Drawings
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of a tab assembly of a pouch battery according to the present utility model;
fig. 2 is a schematic view of one structure of the pouch electric cell of the present utility model;
fig. 3 is a schematic view of another structure of the pouch electric cell of the present utility model.
List of reference numerals:
1. a tab assembly; 11. a metal conductor; 111. a first metal conductor; 112. a second metal conductor; 113. a third metal conductor; 114. a fourth metal conductor; 115. a first end of the metal conductor; 116. a second end of the metal conductor; 12. a cylindrical adhesive layer; 121. a liquid injection hole; 2. an aluminum plastic film; 21. top edge banding; 22. side edge sealing; 3. and a seal.
Detailed Description
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. Those skilled in the art can adapt it as desired to suit a particular application.
It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the term "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
As shown in fig. 1-3, in order to solve the problem that the aluminum plastic film is easy to wrinkle when the existing cylindrical soft-packaged battery is packaged by the aluminum plastic film, as shown in fig. 2, the soft-packaged battery of the utility model comprises a winding core (not shown in the figure), a tab assembly 1 and an aluminum plastic film 2, wherein the winding core is cylindrical and comprises an inner positive tab (not shown in the figure) and an inner negative tab (not shown in the figure), as shown in fig. 1, the tab assembly 1 comprises a cylindrical adhesive layer 12 and a metal conductor 11, the metal conductor 11 penetrates through the cylindrical adhesive layer 12, the tab assembly 1 is provided with two groups, a first end 115 of the metal conductor 11 (i.e. a third metal conductor 113 in the figure) of the first group of tab assemblies 1 is connected with the inner positive tab, a second end 116 extends out of the cylindrical adhesive layer 12, a first end 115 of the metal conductor 11 (i.e. a fourth metal conductor 114 in the figure) of the second group of tab assemblies 1 is connected with the inner negative tab, a second end 116 extends out of the cylindrical adhesive layer 12, the aluminum plastic film 2 is arranged on the outer side of the winding core, and two ends of the aluminum plastic film 2 are respectively connected with the cylindrical adhesive layer 12 of the first group of tab assemblies 1 and the second group of tab assemblies 1. Preferably, both ends of the aluminum plastic film 2 are connected with the cylindrical glue layer 12 through heat sealing.
The above arrangement has the advantages that: when the positive electrode and the negative electrode of the soft package battery are arranged at two ends of the battery, the inner positive electrode lug and the inner negative electrode lug are led out from the winding core, the metal conductors 11 connected with the inner positive electrode lug and the inner negative electrode lug are arranged at two ends of the soft package battery, the inner positive electrode lug and the inner negative electrode lug are respectively connected with the first end of the third metal conductor 113 of the first group of tab assemblies 1 and the first end of the fourth metal conductor 114 of the second group of tab assemblies 1, then the packaging of the aluminum plastic film 2 is carried out, the first group of tab assemblies 1 and the cylindrical adhesive layers 12 of the second group of tab assemblies 1 are arranged in an up-down alignment manner, two ends of the aluminum plastic film 2 are respectively formed into top edge sealing 21 with the upper cylindrical adhesive layer 12 and the lower cylindrical adhesive layer 12 through hot melting, the side edge sealing 22 is formed on the side surface of the aluminum plastic film 2, and connection means such as stamping and kneading are not used, and the arrangement of the upper cylindrical adhesive layer 12 and the lower cylindrical adhesive layers 12 can prevent the two ends of the aluminum plastic film 2 from being wrinkled when being sealed with the cylindrical adhesive layers 12.
Under the general condition, the cylindrical shape of the cylindrical soft-packed battery can be realized by performing cylindrical pit punching on the aluminum plastic film 2, after the aluminum plastic film 2 performs cylindrical pit punching, the winding core is placed in the aluminum plastic film 2, the upper and lower cylindrical aluminum plastic films 2 are sealed to form a cavity, sealing edges are formed at the sealed positions of the upper and lower cylindrical aluminum plastic films 2, the cylindrical shape of the cylindrical soft-packed battery can also be realized by performing semi-cylindrical pit punching on the aluminum plastic film 2, after the aluminum plastic film 2 performs semi-cylindrical pit punching, the winding core is placed in the aluminum plastic film 2, and the left and right semi-cylindrical aluminum plastic films 2 are sealed to form the cavity, and sealing edges are formed at the sealed positions of the two aluminum plastic films 2. Both of the above-mentioned cylindrical soft pack batteries are realized by punching the pit in the plastic-aluminum film 2, but because the plastic-aluminum film 2 is thinner, the depth of the pit in the plastic-aluminum film 2 is limited, so that the capacity of the cylindrical soft pack battery is limited and the energy density of the cylindrical soft pack battery (the energy density of the battery refers to the electric energy released by the average unit volume or mass of the battery) is difficult to raise, while the soft pack battery of the present utility model does not adopt the pit punching design of the plastic-aluminum film 2, so that the volume of the soft pack battery of the present utility model is theoretically unlimited and can be made much larger than that of the soft pack battery manufactured by punching the pit in the plastic-aluminum film 2, so that the soft pack battery of the present utility model has a great improvement in battery capacity, and the more energy stored in the battery is raised while the battery volume is increased.
In addition, both the above-mentioned two cylindrical soft package batteries are realized by punching the aluminum plastic film 2, but the aluminum plastic film 2 is very easy to wrinkle in the process of punching the pit, the top edge seal 21 of the aluminum plastic film 2 of the soft package battery is directly formed by heat sealing with the cylindrical adhesive layer 12, and the side edge seal 22 is along the straight line direction, so that the situation that the aluminum plastic film 2 needs to be bent does not occur when the aluminum plastic film 2 is subjected to edge sealing, and therefore, the aluminum plastic film 2 can be kept flat all the time in the edge sealing process.
As shown in fig. 3, in another structure of the soft package battery, the soft package battery includes a winding core, a tab assembly 1 and an aluminum plastic film 2, a first end of the winding core includes an inner positive tab and an inner negative tab, the tab assembly 1 includes a cylindrical adhesive layer 12, a metal conductor 11 and a sealing member 3, the metal conductor 11 includes a first metal conductor 111 and a second metal conductor 112, the first metal conductor 111 and the second metal conductor 112 both penetrate through the cylindrical adhesive layer 12, the first end of the first metal conductor 111 is connected with the inner positive tab, the first end of the second metal conductor 112 is connected with the inner negative tab, the second end of the first metal conductor 111 and the second end of the second metal conductor 112 both extend out of the cylindrical adhesive layer 12, the second end of the winding core is provided with the sealing member 3, the aluminum plastic film 2 is enclosed on the outer side of the winding core, the first end of the aluminum plastic film 2 is connected with the cylindrical adhesive layer 12 in a sealing manner, and the second end of the aluminum plastic film 2 is connected with the sealing member 3 in a sealing manner. Preferably, the sealing member 3 is provided in a cylindrical shape, the diameter of the cross section of the sealing member 3 is equal to the diameter of the cross section of the cylindrical adhesive layer 12, the first end of the aluminum plastic film 2 is connected with the cylindrical adhesive layer 12 by heat sealing, and the second end of the aluminum plastic film 2 is connected with the sealing member 3 by heat sealing.
The above arrangement has the advantages that: when the positive electrode and the negative electrode of the soft package battery are on the same side, the inner positive electrode lug and the inner negative electrode lug are led out from the upper surface of the winding core, the metal conductors 11 connected with the inner positive electrode lug and the inner negative electrode lug are arranged at the same end of the soft package battery, at the moment, the cylindrical adhesive layer 12 of the pole lug assembly 1 is provided with two metal conductors 11, namely a first metal conductor 111 and a second metal conductor 112, which are respectively connected with the inner positive electrode lug and the inner negative electrode lug, the other end of the winding core is provided with a sealing piece 3 with the same diameter as the cylindrical adhesive layer 12, the sealing piece 3 is aligned with the cylindrical adhesive layer 12, one end of the aluminum plastic film 2 is sealed with the cylindrical adhesive layer 12 in a hot melting mode, and the other end of the aluminum plastic film 2 is sealed with the sealing piece 3 in a hot melting mode.
Preferably, the liquid injection hole 121 is provided on the cylindrical adhesive layer 12 or on the sealing member 3, and the metal conductor 11 is provided in a sheet shape or a rod shape.
The liquid injection holes 121 are formed in the cylindrical adhesive layer 12 of the tab assembly 1 or the sealing piece 3, so that the sealed aluminum plastic film 2 can be conveniently injected later, and the liquid injection holes 121 can be sealed through the piston or sealed in other modes after the liquid injection is finished. In addition, the air bag is needed to be arranged in the aluminum plastic film 2 for use in liquid injection in the general case, and the air bag can be sheared off in the subsequent manufacturing process of the battery, and the liquid injection of the cylindrical soft package battery can be realized without the air bag, so that the waste of materials is avoided, and the manufacturing cost of the soft package battery is reduced.
In summary, the two ends of the plastic-aluminum film 2 are respectively formed into the top sealing edge 21 with the upper and lower cylindrical adhesive layers 12 by hot melting, or one end of the plastic-aluminum film 2 is formed into the top sealing edge 21 with the cylindrical adhesive layers 12 and one end of the plastic-aluminum film 3 by hot melting, so that the pit punching on the plastic-aluminum film 2 is not needed, and the plastic-aluminum film 2 does not need to be bent in the sealing edge process, therefore, the possibility of wrinkling of the plastic-aluminum film 2 is reduced, and the volume of the soft-packaged battery can be set larger because the pit punching on the plastic-aluminum film 2 is not needed.
It should be noted that the above-mentioned embodiments are merely for illustrating the principles of the present utility model, and are not intended to limit the scope of the utility model, and those skilled in the art can modify the above-mentioned structure to apply the present utility model to more specific application scenarios without departing from the principles of the present utility model.
Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.
Claims (10)
1. The utility model provides a soft packet battery, its characterized in that, soft packet battery includes rolls up core, utmost point ear subassembly and plastic-aluminum membrane, roll up the core and include interior positive electrode ear and interior negative electrode ear, utmost point ear subassembly includes cylindrical glue layer and metal conductor, metal conductor run through in cylindrical glue layer, utmost point ear subassembly is provided with two sets of, first group utmost point ear subassembly the first end of metal conductor with interior positive electrode ear is connected, the second end extends cylindrical glue layer, the second group utmost point ear subassembly the first end of metal conductor with interior negative electrode ear is connected, the second end extends cylindrical glue layer, the plastic-aluminum membrane encloses to establish the outside of rolling up the core, the both ends of plastic-aluminum membrane respectively with first group utmost point ear subassembly the cylindrical glue layer with the second group utmost point ear subassembly the cylindrical glue layer sealing connection.
2. The flexible battery as claimed in claim 1, wherein the cylindrical adhesive layer is provided with a liquid injection hole.
3. The flexible battery as claimed in claim 1, wherein both ends of the aluminum plastic film are connected to the cylindrical adhesive layer by heat sealing.
4. The pouch cell of claim 1, wherein the metal conductor is provided in a sheet or bar shape.
5. The pouch cell of claim 1, wherein the winding core is cylindrical.
6. The utility model provides a soft packet battery, its characterized in that, soft packet battery includes rolls up core, utmost point ear subassembly and plastic-aluminum membrane, roll up core first end and including interior anodal ear and interior negative pole ear, utmost point ear subassembly includes cylindrical glue layer, metal conductor and sealing member, metal conductor includes first metal conductor and second metal conductor, first metal conductor with the second metal conductor all run through in cylindrical glue layer, first metal conductor's first end with anodal ear is connected, second metal conductor's first end with negative pole ear is connected, first metal conductor's second end with second metal conductor's second end all extends the cylindrical glue layer, it is provided with to roll up the second end of core the sealing member, the plastic-aluminum membrane encloses to establish the outside of rolling up the core, plastic-aluminum membrane's first end with cylindrical glue layer sealing connection, plastic-aluminum membrane's second end with sealing member sealing connection.
7. The flexible battery of claim 6, wherein the cylindrical glue layer or the sealing member is provided with a liquid injection hole.
8. The pouch cell of claim 6, wherein the sealing member is provided in a cylindrical shape, and a diameter of a section of the sealing member is equal to a diameter of a section of the cylindrical adhesive layer.
9. The pouch cell of claim 8, wherein the first end of the aluminum plastic film is heat sealed to the cylindrical glue layer and the second end of the aluminum plastic film is heat sealed to the sealing member.
10. The pouch cell of claim 6, wherein the winding core is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223087325.7U CN218975531U (en) | 2022-11-21 | 2022-11-21 | Soft package battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223087325.7U CN218975531U (en) | 2022-11-21 | 2022-11-21 | Soft package battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218975531U true CN218975531U (en) | 2023-05-05 |
Family
ID=86163884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223087325.7U Active CN218975531U (en) | 2022-11-21 | 2022-11-21 | Soft package battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218975531U (en) |
-
2022
- 2022-11-21 CN CN202223087325.7U patent/CN218975531U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101165287B1 (en) | A soft packaged and high capacity lithium ion battery and the manufacture method of the same | |
| CN109585905B (en) | Method for manufacturing arc-shaped flexible package lithium battery | |
| CN1221054C (en) | Bag lithium ion battery preparing method and battery thereby | |
| CN101593849A (en) | A kind of lithium battery and manufacture method thereof | |
| CN205319258U (en) | Round lithium ion battery | |
| CN210040267U (en) | Secondary battery | |
| CN101794915A (en) | Lithium ion battery structure and preparation method thereof | |
| CN112736288B (en) | Battery packaging method, battery and electronic equipment | |
| CN112599935A (en) | Lithium ion power soft package battery tab and manufacturing method of battery | |
| CN111180782A (en) | Method for manufacturing secondary battery by adopting double-core-cladding lamination and integral riveting | |
| CN201536135U (en) | Lithium battery | |
| CN201528017U (en) | Lithium ion battery structure | |
| CN110828905A (en) | Method for manufacturing lithium ion battery | |
| CN102044706A (en) | Method for preparing flexible packaging cylindrical lithium battery | |
| CN218975531U (en) | Soft package battery | |
| CN111341947A (en) | Special-shaped high-rate battery and preparation method thereof | |
| JP3869668B2 (en) | Electrochemical device and manufacturing method thereof | |
| CN216958174U (en) | Soft package power battery with lithium supplement structure | |
| CN214254553U (en) | Packaging structure of soft package battery and soft package battery adopting same | |
| CN108258326A (en) | A kind of Soft Roll coiling battery for improving chemical conversion aerogenesis and preparation method thereof | |
| CN210576287U (en) | Laminated lithium battery with double pairs of tabs | |
| CN210052808U (en) | Concave winding type lithium battery | |
| CN206849880U (en) | A kind of early warning lithium battery for being capable of waterproof | |
| CN110729446A (en) | Polymer soft-package single-end tab cylindrical battery and manufacturing process thereof | |
| CN201319392Y (en) | Flexible packing cylindrical lithium manganese battery structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |