CN113629324A - A package assembly for miniature cylindrical lithium battery - Google Patents
A package assembly for miniature cylindrical lithium battery Download PDFInfo
- Publication number
- CN113629324A CN113629324A CN202110965675.XA CN202110965675A CN113629324A CN 113629324 A CN113629324 A CN 113629324A CN 202110965675 A CN202110965675 A CN 202110965675A CN 113629324 A CN113629324 A CN 113629324A
- Authority
- CN
- China
- Prior art keywords
- switching piece
- lithium battery
- pole switching
- cylindrical shell
- packaging assembly
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 20
- 238000004806 packaging method and process Methods 0.000 claims abstract description 17
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000565 sealant Substances 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims abstract description 6
- 239000011810 insulating material Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 abstract description 2
- 238000005538 encapsulation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/109—Primary casings; Jackets or wrappings 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
- H01M50/143—Fireproof; Explosion-proof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
- H01M50/145—Primary casings; Jackets or wrappings for protecting against damage caused by external factors for protecting against corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/198—Sealing members characterised by the material characterised by physical properties, e.g. adhesiveness or hardness
-
- 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)
- Primary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention provides a packaging assembly for a miniature cylindrical lithium battery, which comprises a switching structure, wherein the switching structure consists of a positive pole switching piece, a negative pole switching piece and a sealant arranged between the positive pole switching piece and the negative pole switching piece, the packaging assembly also comprises a cylindrical shell, and the switching structure is arranged on the cylindrical shell, the packaging assembly adopts a hydrofluoric acid-resistant insulating material as the sealant between the positive pole switching piece and the negative pole switching piece, meets the insulating and sealing requirements between the positive pole switching piece and the negative pole switching piece while ensuring the bonding strength, and arranges the outer edge of the positive pole switching piece into a flange shape, is convenient to position and seal by laser welding when being assembled with the cylindrical shell, further improves the internal sealing property, has simple integral structure, convenient installation and small occupied space, can maximize the utilization rate of the internal space and improve the occupation ratio of a battery cell, and an explosion-proof weakened area is further arranged at the bottom of the cylindrical shell, so that the internal pressure has a release outlet and explosion does not occur.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a packaging assembly for a miniature cylindrical lithium battery.
Background
Miniature cylinder lithium cell is button cell in order to become the applied battery form of present mainstream, and its small advantage makes it can be applied to among a great deal of small-size electronic equipment, like wireless earphone etc. and miniature cylinder battery need rely on the encapsulation subassembly as the carrier in the manufacturing process, and current encapsulation subassembly model is various, but the general encapsulation leakproofness that has is not enough, annotates the liquid precision and is difficult to control and lead to the battery in order exploding, the complicated installation of structure does not change scheduling problem.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a packaging assembly for a miniature cylindrical lithium battery.
The technical scheme of the invention is as follows:
the utility model provides a encapsulation subassembly for miniature cylinder lithium cell, includes a switching structure, switching structure is by a positive pole keysets, negative pole keysets and locate sealed glue between positive pole keysets and negative pole keysets constitutes, just the outward flange department of negative pole keysets establishes to the flange form.
In the invention, the sealant is made of hydrofluoric acid resistant insulating material, and the positive electrode adapter sheet and the negative electrode adapter sheet are bonded by a high-frequency heating mode.
In the invention, the packaging assembly further comprises a cylindrical shell, and the switching structure is arranged on the cylindrical shell.
Furthermore, the positive adapter plate and the negative adapter plate and the cylindrical shell are welded and fixed in a laser spot welding mode.
Furthermore, the bottom of the cylindrical shell is provided with an explosion-proof weakening area.
Furthermore, the bottom of the cylindrical shell is also provided with a liquid injection hole.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts hydrofluoric acid-resistant insulating material as the sealant between the anode adapter plate and the cathode adapter plate, meets the insulation and sealing requirements between the anode adapter plate and the cathode adapter plate while ensuring the bonding strength, and sets the outer edge of the anode adapter plate into a flange shape, so that the positioning and laser welding sealing are convenient when the anode adapter plate is assembled with the cylindrical shell, the internal sealing performance is further improved, the whole structure is simple, the installation is convenient and fast, the occupied space is small, the internal space utilization rate can be improved to the maximum extent, the cell occupation ratio is improved, and the bottom of the cylindrical shell is further provided with an explosion-proof weakened area, so that the internal pressure has a release outlet and the explosion is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is an exploded view of a packaging assembly for a micro cylindrical lithium battery according to the present invention;
fig. 2 is a side view of the packaging assembly for a miniature cylindrical lithium battery;
fig. 3 is a cross-sectional view of the packaging assembly for a miniature cylindrical lithium battery;
fig. 4 is a side view of another embodiment of the package assembly for a miniature cylindrical lithium battery.
The reference numerals are explained below:
1. a positive electrode patch; 2. a negative pole switching piece; 21. a flange; 3. sealing glue; 4. a cylindrical housing; 41. an explosion-proof weakened zone; 42. a liquid injection hole; 43. and (4) a step.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Example 1
Referring to fig. 1 to 3, the packaging assembly for a micro cylindrical lithium battery provided in this embodiment includes a switching structure, the switching structure is composed of a positive electrode switching sheet 1, a negative electrode switching sheet 2 and a sealant 3 disposed between the positive electrode switching sheet 1 and the negative electrode switching sheet 2, and an outer edge of the negative electrode switching sheet 2 is formed into a flange 21 shape, so that in an assembling process, the positioning is facilitated while an overall structure is simplified, an internal space utilization rate is maximized, and a cell occupation ratio is improved.
In this embodiment, the sealant 3 is made of a hydrofluoric acid-resistant insulating material, and the positive electrode interposer 1 and the negative electrode interposer 2 are bonded by a high-frequency heating method, so that the bonding strength is ensured, the requirements of insulation and sealing between the positive electrode interposer 1 and the negative electrode interposer 2 are met, and the problem of reduction of the service life of the battery due to insufficient sealing performance is solved.
In this embodiment, the package assembly further includes a cylindrical housing 4, and the adapting structure is disposed on the cylindrical housing 4.
Further, all through laser spot welding mode welded fastening between positive pole keysets 1 and negative pole keysets 2 and between negative pole keysets 2 and cylindrical housing 4, combine the flange 21 design of 2 outward flanges of negative pole keysets, can further simplify installation and location, promote overall structure leakproofness.
Further, the bottom of the cylindrical shell 4 is provided with an explosion-proof weakened area 41, so that the internal pressure has a release outlet and cannot explode.
Furthermore, the bottom of the cylindrical shell 4 is provided with a liquid injection hole 42.
Example 2
Referring to fig. 4, in the packaging assembly for the micro cylindrical lithium battery provided in this embodiment, the step 43 is disposed on the inner edge of the opening of the cylindrical shell 4, so that when the packaging assembly is assembled with the negative adapter 2, positioning and laser welding sealing are facilitated, and meanwhile, the internal space utilization rate and the cell occupation ratio are improved.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021217566248 | 2021-07-29 | ||
| CN202121756624 | 2021-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113629324A true CN113629324A (en) | 2021-11-09 |
Family
ID=78387125
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110965675.XA Pending CN113629324A (en) | 2021-07-29 | 2021-08-23 | A package assembly for miniature cylindrical lithium battery |
| CN202121992006.3U Active CN216120497U (en) | 2021-07-29 | 2021-08-23 | Packaging assembly for miniature cylindrical lithium battery |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121992006.3U Active CN216120497U (en) | 2021-07-29 | 2021-08-23 | Packaging assembly for miniature cylindrical lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN113629324A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072007A (en) * | 2020-09-27 | 2020-12-11 | 广东幺正科技有限公司 | Metal round button cell and sealing method thereof |
| US20210184184A1 (en) * | 2019-12-13 | 2021-06-17 | Samsung Sdi Co., Ltd. | Rechargeable battery |
| CN113013527A (en) * | 2021-02-25 | 2021-06-22 | 东莞小锂新能源科技有限公司 | Novel button battery and manufacturing and mounting method of shell sealing element structure |
-
2021
- 2021-08-23 CN CN202110965675.XA patent/CN113629324A/en active Pending
- 2021-08-23 CN CN202121992006.3U patent/CN216120497U/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210184184A1 (en) * | 2019-12-13 | 2021-06-17 | Samsung Sdi Co., Ltd. | Rechargeable battery |
| CN112072007A (en) * | 2020-09-27 | 2020-12-11 | 广东幺正科技有限公司 | Metal round button cell and sealing method thereof |
| CN113013527A (en) * | 2021-02-25 | 2021-06-22 | 东莞小锂新能源科技有限公司 | Novel button battery and manufacturing and mounting method of shell sealing element structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN216120497U (en) | 2022-03-22 |
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