CN111384317A - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN111384317A CN111384317A CN202010300097.3A CN202010300097A CN111384317A CN 111384317 A CN111384317 A CN 111384317A CN 202010300097 A CN202010300097 A CN 202010300097A CN 111384317 A CN111384317 A CN 111384317A
- Authority
- CN
- China
- Prior art keywords
- negative
- positive
- lithium ion
- plate
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/109—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure of button or coin shape
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of lithium ion batteries, and discloses a lithium ion battery which comprises a shell assembly and an electric core assembly, wherein the shell assembly comprises a shell, a cover plate and a sealing element, the opening of the shell is outwards and convexly provided with a brim, the brim is provided with an accommodating groove with an inward opening, the sealing element is coated on the periphery of the cover plate, and the outer side of the sealing element is pressed against the inner wall of the accommodating groove; the electric core subassembly set up in the casing, the electric core subassembly is provided with anodal ear and negative pole ear, anodal ear connect in the apron, the negative pole ear connect in the casing. The shell assembly of the lithium ion battery comprises a shell, a cover plate and a sealing element, and the cover plate and the sealing element are simple in structure, so that the structural process of the lithium ion battery is simplified; and the outside of sealing member supports and presses in the inner wall of holding tank, the inboard of brim of a hat promptly, makes the sealing member extruded between the edge of apron and the brim of a hat, makes the leakproofness of whole casing subassembly than higher.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a lithium ion battery.
Background
With the development of in-ear bluetooth headsets, button cells are applied more and more widely and are mostly used in electronic devices close to sensitive parts of the body. Chinese invention patent CN201080007121.9 discloses a button cell and a method for producing the button cell, the button cell includes a first metal cup, a second metal cup and an insulating seal, the first metal cup is inserted into the second metal cup, one part of the insulating seal is wrapped at the opening of the first metal cup, and the other part is arranged between the outer wall of the first metal cup and the inner wall of the second metal cup. An electrode plate is arranged in the first metal cup. Moreover, a chamfer needs to be arranged at the edge of the bottom of the first metal cup, and the opening of the second metal cup needs to be folded inwards so as to fix the first metal cup and the second metal cup in an insulating and sealing manner. The button cell is complex in mode and structure and high in manufacturing cost.
Therefore, a lithium ion battery is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a lithium ion battery which is simple in structure and high in sealing performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
provided is a lithium ion battery including:
the shell assembly comprises a shell, a cover plate and a sealing element, wherein a brim is arranged at an opening of the shell in an outward protruding mode, an accommodating groove with an inward opening is formed in the brim, the sealing element is wrapped on the periphery of the cover plate, and the outer side of the sealing element is abutted against the inner wall of the accommodating groove;
the battery cell assembly, it set up in the casing, the battery cell assembly is provided with anodal ear and negative pole ear, anodal ear connect in the apron, the negative pole ear connect in the casing.
As a preferred technical scheme of the lithium ion battery, the electric core component comprises a positive plate and a negative plate which are arranged in a stacked mode, diaphragms are arranged on two sides of the positive plate or the negative plate, the positive plate and the negative plate are wound into a disc shape to form the electric core component, the positive lug is led out from the positive plate, and the negative lug is led out from the negative plate.
As a preferred technical scheme of a lithium ion battery, the electric core assembly comprises a plurality of positive plates and negative plates which are arranged in a cross-laminated manner, one negative plate is arranged between every two adjacent positive plates, one positive plate is arranged between every two adjacent negative plates, a diaphragm is arranged between the positive plates and the negative plates, and the diaphragms are arranged on the outer sides of the pole pieces on the upper surface and the lower surface of the electric core assembly;
all the positive plates are connected in parallel, and the positive lugs are led out; all the negative plates are connected in parallel, and the negative electrode lugs are led out.
As a preferred technical scheme of the lithium ion battery, the sealing element is made of plastic.
The invention has the beneficial effects that: the shell assembly of the lithium ion battery comprises a shell, a cover plate and a sealing element, and the cover plate and the sealing element are simple in structure, so that the structural process of the lithium ion battery is simplified; and the outside of sealing member supports and presses in the inner wall of holding tank, the inboard of brim of a hat promptly, makes the sealing member extruded between the edge of apron and the brim of a hat, makes the leakproofness of whole casing subassembly than higher.
Drawings
Fig. 1 is a schematic structural diagram of a lithium ion battery provided by the present invention;
fig. 2 is a cross-sectional view of a lithium ion battery provided by the present invention (the core assembly is in the shape of a disk);
fig. 3 is a cross-sectional view of a lithium ion battery provided by the present invention (in which a positive electrode sheet and a negative electrode sheet are stacked).
In the figure: 1. a housing assembly; 11. a housing; 111. a brim; 1111. accommodating grooves; 12. a cover plate; 13. a seal member;
2. an electrical core assembly; 21. a positive tab; 22. a negative tab; 23. a positive plate; 24. a negative plate; 25. a diaphragm.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
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 invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1, the present embodiment discloses a lithium ion battery, which includes a housing assembly 1 and an electric core assembly 2.
The housing assembly 1 includes a housing 11, a cover plate 12 and a sealing member 13, wherein the housing 11 and the cover plate 12 are made of stainless steel. The housing 11 is cup-shaped and the cover 12 is disc-shaped.
The opening of the housing 11 is provided with a brim 111 protruding outward, the brim 111 is provided with an accommodating groove 1111 having an inward opening, the sealing element 13 is wrapped around the cover plate 12, and the outer side of the sealing element 13 abuts against the inner wall of the accommodating groove 1111. The sealing element 13 is circular, a groove is annularly arranged on the inner wall of the sealing element 13, and the sealing element 13 is sleeved on the cover plate 12, so that the periphery of the cover plate 12 extends into the groove. And the seal 13 is an interference fit with the cover plate 12. To ensure the seal between the two, a sealant is applied around the perimeter of the cover plate 12 and/or in the recess of the sealing member 13. The outer side surface and the parts of the upper surface and the lower surface of the sealing element 13 close to the outer side surface are pressed against and attached to the inner wall of the accommodating groove 1111. To ensure sealability between the sealing member 13 and the visor 111, a sealant is coated on the outer periphery of the sealing member 13 and/or the inner wall of the receiving groove 1111. The material of the sealing member 13 is plastic resistant to corrosion by the electrolyte, and in the present embodiment, PP is preferred.
Packaging process of the cover plate 12: the shell 11 is initially processed into a step shape, the outer diameter of the opening is larger, and the brim 111 is a large-aperture section; after the electric core assembly 2 in the shell 11 is installed, the assembled cover plate 12 and the sealing element 13 are placed in the large-aperture section; then, the edge of the opening of the shell 11 is rolled and bent inwards by 45 degrees, and the cover plate 12 and the sealing piece 13 are preliminarily fixed; then, the bent portion is further rolled downward to be parallel to the bottom surface of the housing 11, so that the receiving groove 1111 is formed at the visor 111, and the cover plate 12 and the sealing member 13 are assembled in the receiving groove 1111 of the housing 11.
The shell assembly 1 of the lithium ion battery comprises a shell 11, a cover plate 12 and a sealing piece 13, wherein the cover plate 12 and the sealing piece 13 are simple in structure, so that the structural process of the lithium ion battery is simplified; and the outer side of the sealing member 13 is pressed against the inner wall of the receiving groove 1111, i.e. the inner side of the visor 111, so that the sealing member 13 is pressed between the edge of the cover plate 12 and the visor 111, and the sealing performance of the entire housing assembly 1 is relatively high.
The battery pack 2 is arranged in the casing 11, the battery pack 2 is provided with a positive tab 21 and a negative tab 22, the positive tab 21 is mechanically and electrically connected to the cover plate 12, and the negative tab 22 is mechanically and electrically connected to the casing 11.
As shown in fig. 2, in the present embodiment, the electric core assembly 2 preferably includes a positive electrode sheet 23 and a negative electrode sheet 24 which are stacked, and the positive electrode sheet 23 and the negative electrode sheet 24 are both long. Both sides of the positive plate 23 or the negative plate 24 are provided with a diaphragm 25 (black film), in this embodiment, both sides of the negative plate 24 are provided with diaphragms 25, the positive plate 23 and the negative plate 24 are wound into a disc shape to form the cell assembly 2, the positive tab 21 is led out from the positive plate 23, and the negative tab 22 is led out from the negative plate 24.
In other embodiments, as shown in fig. 3, the cell assembly 2 comprises a plurality of positive plates 23 and negative plates 24 stacked in a crossed manner, and each of the positive plates 23 and the negative plates 24 has a disk shape, and has the same shape and size as the cross section of the housing 11. A negative plate 24 is arranged between two adjacent positive plates 23, a positive plate 23 is arranged between two adjacent negative plates 24, and diaphragms 25 are arranged between the positive plates 23 and the negative plates 24 and outside the pole pieces on the upper surface and the lower surface of the electric core assembly 2. All the positive plates 23 are connected in parallel, and positive lugs 21 are led out; all the negative electrode tabs 24 are connected in parallel, and the negative electrode tabs 22 are led out.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (4)
1. A lithium ion battery, comprising:
the shell assembly (1) comprises a shell (11), a cover plate (12) and a sealing element (13), wherein an opening of the shell (11) is outwards and convexly provided with a cap peak (111), the cap peak (111) is provided with an accommodating groove (1111) with an inward opening, the sealing element (13) is wrapped on the periphery of the cover plate (12), and the outer side of the sealing element (13) is pressed against the inner wall of the accommodating groove (1111);
the battery pack (2) is arranged in the shell (11), the battery pack (2) is provided with a positive tab (21) and a negative tab (22), the positive tab (21) is connected to the cover plate (12), and the negative tab (22) is connected to the shell (11).
2. The lithium ion battery according to claim 1, wherein the battery assembly (2) comprises a positive plate (23) and a negative plate (24) which are arranged in a stacked manner, a separator (25) is arranged on each of two sides of the positive plate (23) or the negative plate (24), the positive plate (23) and the negative plate (24) are wound into a disc shape to form the battery assembly (2), the positive tab (21) is led out from the positive plate (23), and the negative tab (22) is led out from the negative plate (24).
3. The lithium ion battery according to claim 1, wherein the battery module (2) comprises a plurality of positive plates (23) and negative plates (24) which are arranged in a cross-laminated manner, one negative plate (24) is arranged between two adjacent positive plates (23), one positive plate (23) is arranged between two adjacent negative plates (24), a separator (25) is arranged between the positive plates (23) and the negative plates (24), and the separator (25) is arranged on the outer side of the pole piece on the upper surface and the outer side of the pole piece on the lower surface of the battery module (2);
all the positive plates (23) are connected in parallel, and the positive lugs (21) are led out; all the negative plates (24) are connected in parallel, and the negative tabs (22) are led out.
4. The lithium ion battery according to claim 1, wherein the material of the sealing member (13) is plastic.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010300097.3A CN111384317A (en) | 2020-04-16 | 2020-04-16 | Lithium ion battery |
| PCT/CN2020/086347 WO2021208128A1 (en) | 2020-04-16 | 2020-04-23 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010300097.3A CN111384317A (en) | 2020-04-16 | 2020-04-16 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111384317A true CN111384317A (en) | 2020-07-07 |
Family
ID=71219033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010300097.3A Pending CN111384317A (en) | 2020-04-16 | 2020-04-16 | Lithium ion battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111384317A (en) |
| WO (1) | WO2021208128A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563629A (en) * | 2020-11-20 | 2021-03-26 | 曙鹏科技（深圳）有限公司 | Pouch battery and method for producing a first pouch half shell |
| CN114284542A (en) * | 2021-12-28 | 2022-04-05 | 山西中科华孚汽车动力研究总院有限公司 | Battery manufacturing method and battery |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5879482B2 (en) * | 2011-08-04 | 2016-03-08 | パナソニックＩｐマネジメント株式会社 | Non-aqueous electrolyte coin battery |
| CN204596909U (en) * | 2015-03-25 | 2015-08-26 | 深圳金山电池有限公司 | A kind of Novel button lithium ion battery |
| CN106654077A (en) * | 2017-01-23 | 2017-05-10 | 珠海微矩实业有限公司 | Button battery |
| KR102647962B1 (en) * | 2018-07-13 | 2024-03-14 | 주식회사 엘지에너지솔루션 | Secondary battery and method for manufacturing the battery |
| CN109449320B (en) * | 2018-11-06 | 2021-01-26 | 河南省鹏辉电源有限公司 | Button cell shell structure, button cell and consumer |
| CN210245625U (en) * | 2019-05-28 | 2020-04-03 | 深圳金山电池有限公司 | Button cell packaging structure |
| CN210379130U (en) * | 2020-02-27 | 2020-04-21 | 比亚迪股份有限公司 | Button cell |
-
2020
- 2020-04-16 CN CN202010300097.3A patent/CN111384317A/en active Pending
- 2020-04-23 WO PCT/CN2020/086347 patent/WO2021208128A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563629A (en) * | 2020-11-20 | 2021-03-26 | 曙鹏科技（深圳）有限公司 | Pouch battery and method for producing a first pouch half shell |
| CN114284542A (en) * | 2021-12-28 | 2022-04-05 | 山西中科华孚汽车动力研究总院有限公司 | Battery manufacturing method and battery |
| CN114284542B (en) * | 2021-12-28 | 2024-02-06 | 山西中科华孚电池研究总院有限公司 | Manufacturing method of battery and battery |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021208128A1 (en) | 2021-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101706382B1 (en) | Galvanic element for high stresses | |
| CN210245557U (en) | Button cell | |
| CN114899556A (en) | Battery, battery module and battery pack | |
| CN111384317A (en) | Lithium ion battery | |
| CN211555946U (en) | Lithium ion battery | |
| KR100870460B1 (en) | Battery Pack Employed with Frame Member Having Inclined Inner Plane | |
| CN210743993U (en) | Top cap assembly, secondary battery, battery module and device | |
| CN214957234U (en) | Miniature lithium ion battery with explosion-proof trace | |
| CN112968235B (en) | Battery cap and battery | |
| CN211789109U (en) | Lithium ion battery | |
| CN210403778U (en) | Button cell for improving radial space utilization rate | |
| CN201336324Y (en) | Sealing body for column type lithium battery | |
| CN113013527A (en) | Novel button battery and manufacturing and mounting method of shell sealing element structure | |
| CN217405562U (en) | Battery upper cover and battery | |
| CN215988958U (en) | Button cell | |
| CN215955374U (en) | Top cover assembly and battery | |
| CN211789105U (en) | Button cell | |
| CN215451682U (en) | Pole protective cap | |
| CN212366020U (en) | Rechargeable button cell | |
| CN111403632A (en) | Button cell | |
| CN114512699A (en) | Secondary battery and method for manufacturing same | |
| CN219892357U (en) | Lithium battery current collecting disc and battery monomer | |
| CN215988960U (en) | Button cell device | |
| CN218602687U (en) | Battery, battery module and battery pack | |
| CN212380474U (en) | Soft package button cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |