CN210468004U - Battery, winding body and current collecting disc - Google Patents
Battery, winding body and current collecting disc Download PDFInfo
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- CN210468004U CN210468004U CN201922031293.0U CN201922031293U CN210468004U CN 210468004 U CN210468004 U CN 210468004U CN 201922031293 U CN201922031293 U CN 201922031293U CN 210468004 U CN210468004 U CN 210468004U
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
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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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/10—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with wound or folded electrodes
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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
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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
- 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)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The application provides a battery, a winding body and a current collecting disc, and relates to the technical field of batteries. The battery includes a wound body and a case; the winding body is the cylinder, and the top surface and the bottom surface of winding body are provided with first boss and second boss respectively, and the diameter of first boss is less than the diameter of cylinder, and the diameter of second boss is less than the diameter of cylinder to avoid the anodal of winding body to contact with the shell after getting into the casing and take place the short circuit, security when improving the battery and using.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery, a winding body and a current collecting disc.
Background
The winding body in the existing battery is easy to contact with the shell when entering the shell, so that the short circuit phenomenon occurs, and potential safety hazards exist in the production and use processes of the battery.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application aims to provide a battery, a winding body and a current collecting disc so as to solve the problem that potential safety hazards exist in the production and use processes of the battery in the prior art.
The technical scheme of the embodiment of the application is as follows:
embodiments of the present application provide a battery including a jelly roll and a case. The winding body is a cylinder, the top surface and the bottom surface of the winding body are respectively provided with a first boss and a second boss, the diameter of the first boss is smaller than that of the cylinder, and the diameter of the second boss is smaller than that of the cylinder, so that the situation that the anode of the winding body enters the shell and the shell contacts to cause short circuit is avoided.
In the implementation process, the diameter of the first boss is smaller than that of the cylinder, the diameter of the second boss is smaller than that of the cylinder, so that the phenomenon of short circuit when the winding body enters the shell is avoided, and the safety of the battery is improved.
Optionally, the battery provided by embodiments of the present application further includes a positive current collecting disk and an negative current collecting disk. The positive current collecting disc is connected with the first boss, the edge of the positive current collecting disc is bent by a preset angle, and the diameter of the positive current collecting disc is matched with that of the first boss. The negative current collecting plate is connected with the second boss, the edge of the negative current collecting plate is bent by a preset angle, and the diameter of the negative current collecting plate is matched with that of the second boss.
In the implementation process, the edges of the anode current collecting disc and the cathode current collecting disc are bent by the preset angle, so that the rigidity of the anode current collecting disc and the cathode current collecting disc is enhanced, the anode current collecting disc and the cathode current collecting disc are not deformed in the welding process, and the welding quality of the anode current collecting disc, the cathode current collecting disc and the winding body is improved.
Optionally, in the battery provided in the embodiment of the present application, a liquid injection hole is provided on the first boss, and the liquid injection hole is communicated with the internal cavity of the winding body, and is used for injecting an electrolyte.
In the implementation process, the electrolyte is conveniently injected into the winding body through the liquid injection hole.
Optionally, in the battery provided in the embodiment of the present application, the positive current collecting plate edge is further connected with a positive tab, and the positive tab and the first boss form a full tab.
In the implementation process, the positive tab is a full tab, and the full tab can greatly reduce alternating current internal resistance and direct current internal resistance, so that the temperature rise amplitude of the battery is reduced, and rapid charging and high-rate discharging are realized.
Optionally, the battery that the embodiment of this application provided positive current collector dish with negative pole current collector dish through the face welding mode respectively with first boss with the second boss is connected, positive current collector dish with the welding point that first boss carried out the face welding is located positive current collector dish with the laminating department of first boss negative current collector dish with the laminating department of second boss.
In the implementation process, the positive current collecting disc and the negative current collecting disc are respectively connected with the first boss and the second boss through a face welding mode, and the positive current collecting disc and the negative current collecting disc are not easy to deform and can be fully attached to the winding body through the face welding mode, so that the welding quality of the battery is improved.
Optionally, the battery that the embodiment of this application provided still includes the block, the block sets up on the top surface, the block is diameter more than or equal to the diameter of anodal current collecting disc, so that the block welding covers when on the top surface anodal current collecting disc with first boss, anodal ear with the block is connected.
In the implementation process, the first boss is covered by the cover cap and the shell to seal the winding body, so that the electrolyte is prevented from flowing out of the shell, and the use safety of the battery is improved.
Optionally, the battery provided by the embodiment of the present application further includes an insulating reinforcement film wrapped around the outer surface of the wound body.
In the implementation process, the insulating reinforcing film is wrapped on the outer surface of the winding body and used for reinforcing the winding body and preventing the winding body from loosening, and meanwhile, the insulating reinforcing film insulates and isolates the winding body, so that the winding body is prevented from conducting with the outside, and the safety performance of the battery is improved.
Optionally, an embodiment of the present application provides that the housing of the battery of any one of the above is a hollow cylinder surrounding the top surface opening of the winding body, the top surface or the bottom surface of the housing is detachably connected to the housing, and the bottom surface of the hollow cylinder is connected to the winding body.
In the implementation process, the winding body is surrounded by the shell, so that the winding body is prevented from being damaged due to impact, water vapor and the like when placed in the environment, and the service life of the battery is prolonged.
The embodiment of the application also provides a winding body, the winding body is the cylinder, the top surface and the bottom surface of winding body are provided with first boss and second boss respectively, the diameter of first boss is less than the diameter of cylinder, the diameter of second boss is less than the diameter of cylinder makes the coiling carry and gets into first boss and second boss can not with the touching takes place for the shell during the shell, in order to avoid the winding body get into the shell of battery when with the short circuit takes place for the shell contact.
In the implementation process, the diameter of the first boss is smaller than that of the cylinder, and the diameter of the second boss is smaller than that of the cylinder, so that the phenomenon that the winding body is in contact with a shell of a battery to cause short circuit when the winding body is assembled into the battery is avoided, and the application safety of the winding body is improved.
Embodiments of the present application further provide a current collecting tray, including: a positive current collecting plate and a negative current collecting plate; the positive current collecting disc is used for being connected with the first boss of the winding body, the edge of the positive current collecting disc is bent by a preset angle, and the diameter of the positive current collecting disc is matched with that of the first boss; the negative current collecting disc is used for being connected with a second boss of the winding body, the negative current collecting disc is a metal disc with the edge bent by a preset angle, and the diameter of the negative current collecting disc is matched with that of the second boss.
In the implementation process, the edges of the anode current collecting disc and the cathode current collecting disc are bent by the preset angle, so that the rigidity of the anode current collecting disc and the cathode current collecting disc is enhanced, the anode current collecting disc and the cathode current collecting disc are not deformed in the welding process, and the welding quality of the anode current collecting disc, the cathode current collecting disc and the winding body is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
The foregoing and other objects, features and advantages of the application will be apparent from the accompanying drawings in which like reference characters refer to the same parts throughout the different views, and in which the drawings are not intended to be drawn to scale in actual dimensions, with emphasis instead being placed upon illustrating the principles of the application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is noted that the terms "first", "second", and the like are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.
Fig. 1 is a schematic structural diagram of a battery according to an embodiment of the present disclosure.
Fig. 2 is a front view of a roll body according to an embodiment of the present invention.
Fig. 3 is a top view of a wound body according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a positive current collecting plate according to an embodiment of the present application.
Fig. 5 is a schematic structural view of an anode current collecting plate according to an embodiment of the present application.
Icon: 10-a battery; 101-a winding; 1011-a first boss; 1012-a second boss; 102-a housing; 103-positive collector plate; 104-an anode current collector; 105-liquid injection hole; 106-positive tab; 107-a cap; 108-insulating reinforcement film.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a battery 10 according to an embodiment of the present disclosure.
The battery 10 includes a wound body 101 and a case 102, and the case 102 is used to house and protect the wound body 101.
The winding body 101 is a cylinder, the top surface and the bottom surface of the winding body 101 are respectively provided with a first boss 1011 and a second boss 1012, the diameter of the first boss 1011 is smaller than that of the cylinder, and the diameter of the second boss 1012 is smaller than that of the cylinder, so that when the winding body 101 enters the shell 102 of the battery 10, the first boss 1011 or the second boss 1012 is prevented from contacting with the shell 102 to cause short circuit.
Alternatively, the winding body 101 may be a cylinder such as a cylinder, a prism, or the like, and when the winding body 101 enters the case 102, a short circuit phenomenon is prevented from occurring when the positive electrode of the winding body 101 enters the case, thereby improving safety during production and use of the battery 10.
Alternatively, the first boss 1011 or the second boss 1012 may be formed by rolling a blank foil.
Alternatively, the cross-sectional shapes of the first boss 1011 and the second boss 1012 may be the same as the cross-sectional shape of the winding body 101, and the height of the protruding winding body 101 may be adjusted according to the specific requirement of the relative distance between the winding body 101 and the outer shell 102.
Please refer to fig. 2 and fig. 3. Fig. 2 is a front view of a wound body according to an embodiment of the present disclosure, and fig. 3 is a plan view of the wound body according to the embodiment of the present disclosure.
In one embodiment, a cylindrical shape is used as the shape of the winding body 101, so that the volume of the winding body 101 under the same area of material can be effectively increased.
See fig. 4, 5. Fig. 4 is a schematic structural view of an anode current collecting plate according to an embodiment of the present application, and fig. 5 is a schematic structural view of an anode current collecting plate according to an embodiment of the present application.
Optionally, the battery 10 further includes a positive current collecting disk 103 and a negative current collecting disk 104, the positive current collecting disk 103 is connected to the first boss 1011, the positive current collecting disk 103 is a metal disk with an edge bent by a preset angle, and the diameter of the positive current collecting disk 103 matches the diameter of the first boss 1011. Anode current collecting plate 104 is a metal plate whose edge is bent at a predetermined angle, and the diameter of anode current collecting plate 104 matches the diameter of second boss 1012.
The preset angle of the edge bending of the positive current collecting plate 103 refers to an angle of an included angle between the positive current collecting plate 103 and a non-bending plane of the positive current collecting plate 103, and the preset angle may be specifically set according to structural strength, material characteristics, and the like, for example, 80 °, 90 °, 95 °, and the like. It should be understood that the edge fold arrangement in the negative current collecting disk 104 is similar to the positive current collecting disk 103.
It is understood that the diameter of the positive current collecting disk 103 matching the diameter of the first boss 1011 may mean that the diameter of the positive current collecting disk 103 is greater than or equal to the diameter of the first boss 1011 and less than or equal to the diameter of the cylinder.
Likewise, matching the diameter of anode current collecting disk 104 with the diameter of second boss 1012 means that the diameter of anode current collecting disk 104 is greater than or equal to the diameter of second boss 1012 and less than or equal to the diameter of the post.
Under the condition that the positive current collecting disk 103 and the negative current collecting disk 104 meet the diameter size, the positive current collecting disk 103 and the negative current collecting disk 104 can be stably attached to the first boss 1011 or the second boss 1012 without exceeding the range of the top surface or the bottom surface of the winding body 101, so that the situation that the positive current collecting disk 103 or the negative current collecting disk 104 touches the shell 102 to cause short circuit is avoided.
Generally, the connection of the positive current collecting plate 103 to the first boss 1011 and the connection of the negative current collecting plate 104 to the second boss 1012 may be, but not limited to, spot welding or surface welding.
Spot welding is a welding method for forming a welding spot between contact surfaces of two overlapped workpieces by using a columnar electrode during welding, and is mainly used for welding a stamping part of a thin plate component with the thickness of less than 4 mm. The surface welding is a welding method for integrally welding a welding surface based on a welding seam, and has certain requirements on the thickness, the width and the like of the welding seam. Therefore, in the present embodiment, the welding mode can be flexibly selected according to the parameters such as the thickness and the area of the positive current collecting disc 103 and the negative current collecting disc 104.
The positive current collecting plate 103 guides and protects the first boss 1011, and the positive current collecting plate 103 can be made of metal materials such as aluminum or aluminum alloy, and the negative current collecting plate 104 can be made of nickel-plated copper or other copper alloys, because copper and aluminum have good conductivity, soft texture and good stability, and copper and aluminum have relatively low price and copper and aluminum have abundant copper and aluminum element resources in the world.
Optionally, a liquid injection hole 105 is formed on the first boss 1011, and the liquid injection hole 105 is communicated with the internal cavity of the winding body 101 for injecting the electrolyte.
It will be appreciated that the pour hole 105 may be circular, square, triangular, or other common geometric shapes.
With continued reference to fig. 4, the positive tab 106 is further connected to the edge of the positive current collecting plate 103, and the positive tab 106 is a full tab. The full tab can greatly reduce alternating current internal resistance and direct current internal resistance, so that the temperature rise amplitude of the battery is reduced, and quick charging and high-rate discharging are realized.
With continued reference to fig. 1, the positive tab 106 utilizes the empty foil area formed by the first boss 1011 to form a full tab, which eliminates the need to weld multiple tabs to the positive current collecting plate 103, reducing the complexity of battery manufacture.
The positive current collecting plate 103 and the negative current collecting plate 104 are respectively connected with the first boss 1011 and the second boss 1012 through surface welding, the welding point of the surface welding of the positive current collecting plate 103 and the first boss 1011 is positioned at the joint of the positive current collecting plate 103 and the first boss 1011, and the welding point of the surface welding of the negative current collecting plate 104 and the second boss 1012 is positioned at the joint of the negative current collecting plate 104 and the second boss 1012.
The positive current collecting plate 103 and the negative current collecting plate 104 are respectively connected with the first boss 1011 and the second boss 1012 through a surface welding mode, the positive current collecting plate 103 and the negative current collecting plate 104 are not easy to deform through the surface welding mode, the attaching degree with the winding body 101 can be improved, welding is firmer, and the welding quality inside the battery 10 is improved.
As another embodiment, the cathode current collecting disk 103 and the anode current collecting disk 104 may be connected to the first boss 1011 and the second boss 1012, respectively, by spot welding. The spot welding method has a fast welding speed, and improves the welding speed of the welded positive current collecting plate 103 and negative current collecting plate 104 with the first boss 1011 and the second boss 1012 respectively.
Optionally, the battery 10 further includes a cap 107, the cap 107 is disposed on the top surface, the cap 107 has a diameter greater than or equal to that of the positive current collecting plate 103, so that the cap 107 covers the positive current collecting plate 103 and the first boss 1011 when being welded on the top surface, and the positive tab 106 is connected to the cap 107.
It should be understood that the cap 107 needs to perform a conductive function, so that the cap 107 needs to be connected to the positive tab 106. as an embodiment, the positive tab 106 and the cap 107 can be connected by welding, and the welding spot is selected on the inner surface of the cap 107 and can be welded by spot welding or surface welding. The cap 107 encloses the battery 10, and the cap 107 may be made of an alloy material having relatively stable performance in an exposed environment, such as stainless steel.
Optionally, the battery 10 further includes an insulating and reinforcing film 108, and the insulating and reinforcing film 108 is wrapped around the outer surface of the wound body 101.
In one embodiment, the insulating and reinforcing film 108 may be a termination tape, plastic, or other material with good insulating properties. The termination adhesive tape is prepared by taking an insulating material such as polypropylene, polyester or polyimide as a base material, and coating the base material with the special acrylic glue for electrolyte, and has the characteristics of high electrical insulation, proper adhesive force and adhesion, no residual glue after stripping and the like.
The insulating reinforcement film 108 seals the jelly roll 101 to prevent the jelly roll 101 from being loosened, and the insulating reinforcement film 108 insulates and isolates the jelly roll 101 to prevent a conductive phenomenon from occurring with the outside, thereby improving the safety of the battery 10.
Alternatively, the battery 10 according to any of the above embodiments, the housing 102 is a hollow cylinder surrounding the jelly roll 101, and the top surface or the bottom surface of the housing 102 is detachably connected to the housing so as to put in or take out the jelly roll 101. The housing 102 is typically made of a steel material having good pressure resistance and corrosion resistance.
In summary, embodiments of the present application provide a battery, including: a winding body and a housing; the winding body is the cylinder, and the top surface and the bottom surface of winding body are provided with first boss and second boss respectively, and the diameter of first boss is less than the diameter of cylinder, and the diameter of second boss is less than the diameter of cylinder to contact with the shell when avoiding the winding body to get into the shell and take place the short circuit, security when improving the battery and using.
The embodiment of this application still provides a winding body, the winding body is the cylinder, the top surface and the bottom surface of winding body are provided with first boss and second boss respectively, the diameter of first boss is less than the diameter of cylinder, the diameter of second boss is less than the diameter of cylinder, in order to avoid the winding body get into the shell of battery when with the short circuit takes place in the shell contact.
Embodiments of the present application further provide a current collecting tray, including: a positive current collecting plate and a negative current collecting plate; the positive current collecting disc is used for being connected with the first boss of the winding body, the edge of the positive current collecting disc is bent by a preset angle, and the diameter of the positive current collecting disc is matched with that of the first boss; the negative current collecting disc is used for being connected with a second boss of the winding body, the negative current collecting disc is a metal disc with the edge bent by a preset angle, and the diameter of the negative current collecting disc is matched with that of the second boss.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Claims (10)
1. A battery, comprising: a winding body and a housing;
the winding body is a cylinder, the top surface and the bottom surface of the winding body are respectively provided with a first boss and a second boss, the diameter of the first boss is smaller than that of the cylinder, and the diameter of the second boss is smaller than that of the cylinder, so that the situation that the anode of the winding body enters the shell and the shell contacts to cause short circuit is avoided.
2. The cell defined in claim 1, further comprising a positive current collector and an negative current collector;
the positive current collecting disc is connected with the first boss, the edge of the positive current collecting disc is bent by a preset angle, and the diameter of the positive current collecting disc is matched with that of the first boss;
the negative current collecting plate is connected with the second boss, the edge of the negative current collecting plate is bent by a preset angle, and the diameter of the negative current collecting plate is matched with that of the second boss.
3. The battery according to claim 1, wherein the first boss is provided with a liquid injection hole communicating with the internal cavity of the jelly roll for injecting an electrolyte.
4. The battery of claim 2, wherein a positive tab is further connected to the edge of the positive collector plate, and the positive tab and the first boss form a full tab.
5. The cell of claim 4, wherein the positive current collecting plate and the negative current collecting plate are connected to the first boss and the second boss by surface welding, and wherein a welding point of the positive current collecting plate and the first boss is located at a joint of the positive current collecting plate and the first boss, and a welding point of the negative current collecting plate and the second boss is located at a joint of the negative current collecting plate and the second boss.
6. The cell defined in claim 5, further comprising a cap disposed on the top surface, the cap having a diameter greater than or equal to the diameter of the positive current collector plate such that the cap covers the positive current collector plate and the first boss when welded to the top surface, the positive tab being connected to the cap.
7. The battery of claim 1, further comprising an insulating reinforcement film wrapped around an outer surface of the jelly roll.
8. The battery according to any one of claims 1 to 7, wherein the case is a hollow cylinder surrounding an opening of a top surface of the jelly roll, and a bottom surface of the hollow cylinder is connected to the jelly roll.
9. The winding body is characterized in that the winding body is a cylinder, a first boss and a second boss are respectively arranged on the top surface and the bottom surface of the winding body, the diameter of the first boss is smaller than that of the cylinder, and the diameter of the second boss is smaller than that of the cylinder, so that short circuit caused by contact of the winding body and a shell when the winding body enters the shell of a battery is avoided.
10. A manifold disk, comprising: a positive current collecting plate and a negative current collecting plate;
the positive current collecting disc is used for being connected with the first boss of the winding body as claimed in claim 9, the positive current collecting disc is a metal disc with an edge bent at a preset angle, and the diameter of the positive current collecting disc is matched with that of the first boss;
the negative current collecting disc is used for being connected with a second boss of the winding body, the negative current collecting disc is a metal disc with the edge bent by a preset angle, and the diameter of the negative current collecting disc is matched with that of the second boss.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921878228 | 2019-11-01 | ||
| CN2019218782285 | 2019-11-01 |
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| CN210468004U true CN210468004U (en) | 2020-05-05 |
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| CN201911152559.5A Pending CN110854425A (en) | 2019-11-01 | 2019-11-21 | Battery, winding body and current collecting disc |
| CN201922031293.0U Active CN210468004U (en) | 2019-11-01 | 2019-11-21 | Battery, winding body and current collecting disc |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110854425A (en) * | 2019-11-01 | 2020-02-28 | 广州鹏辉能源科技股份有限公司 | Battery, winding body and current collecting disc |
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| JP5132269B2 (en) * | 2007-11-13 | 2013-01-30 | 日立ビークルエナジー株式会社 | Lithium ion secondary battery |
| JP5166511B2 (en) * | 2008-03-07 | 2013-03-21 | パナソニック株式会社 | Lithium ion secondary battery and manufacturing method thereof |
| CN202549997U (en) * | 2012-04-24 | 2012-11-21 | 张潘毅 | High-capacity cylindrical lithium ion battery |
| CN104953190A (en) * | 2015-06-26 | 2015-09-30 | 张贵萍 | Cell winding body shaping method and equipment and high-capacity lithium ion battery and production method thereof |
| CN207753113U (en) * | 2018-01-27 | 2018-08-21 | 林州朗坤科技有限公司 | A kind of high usage electrochemical device |
| CN109088037A (en) * | 2018-06-22 | 2018-12-25 | 合肥国轩高科动力能源有限公司 | A kind of cylindrical battery current collecting plates welding structure |
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| CN208797094U (en) * | 2018-09-04 | 2019-04-26 | 苏州安靠电源有限公司 | Battery |
| CN110854425A (en) * | 2019-11-01 | 2020-02-28 | 广州鹏辉能源科技股份有限公司 | Battery, winding body and current collecting disc |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854425A (en) * | 2019-11-01 | 2020-02-28 | 广州鹏辉能源科技股份有限公司 | Battery, winding body and current collecting disc |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110854425A (en) | 2020-02-28 |
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Jinbo Inventor after: Zhang Guiping Inventor after: Ji Yaohan Inventor after: Huang Zikang Inventor after: Yao Peixin Inventor after: Liu Jiansheng Inventor before: Wu Jinbo Inventor before: Zhang Guiping Inventor before: Ji Yaohan Inventor before: Huang Zikang Inventor before: Yao Peixing Inventor before: Liu Jiansheng |
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| CB03 | Change of inventor or designer information |