CN108232282A - Button cell and preparation method thereof - Google Patents
Button cell and preparation method thereof Download PDFInfo
- Publication number
- CN108232282A CN108232282A CN201711418202.8A CN201711418202A CN108232282A CN 108232282 A CN108232282 A CN 108232282A CN 201711418202 A CN201711418202 A CN 201711418202A CN 108232282 A CN108232282 A CN 108232282A
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- gasket
- button cell
- nickel screen
- anode cover
- 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.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention discloses a kind of button cell and preparation method thereof, and including anode cover, positive plate, diaphragm, negative plate, support element, negative electrode casing and electrolyte, support element includes gasket and nickel screen；Anode cover faces each other setting and connect with negative electrode casing forms a host cavity, the one end of positive plate, diaphragm, negative plate, gasket and nickel screen from close to one end of anode cover to far from anode cover is contained in host cavity successively, and the anode cover, the positive plate, the diaphragm, the negative plate, the gasket, the nickel screen and the negative electrode casing abut fixation between each other under the elastic reaction of the nickel screen, the electrolyte is filled in the host cavity.So, using gasket and nickel screen integrally as during support element, under the elastic reaction of nickel screen and gasket has certain intensity, it can ensure that the pressing between positive plate and negative plate is close, the pressure that the larger nickel screen of elastic space can be inside buffer battery simultaneously so that the yields that battery makes significantly is promoted.
Description
Technical field
The present invention relates to technical field of lithium ion, more particularly to a kind of button cell and preparation method thereof.
Background technology
Lithium ion battery is widely used in the consumer electronics products such as mobile phone, computer, mobile power as a kind of new energy
With the fields, the wherein most crucial material of positive electrode, negative material, electrolyte and diaphragm as lithium ion battery such as electric vehicle
Material directly influences the performance of lithium ion battery, and general we assess the performance of these four materials using button cell,
Determine the material of more dominance energy so as to improve the overall performance of lithium ion battery with this.
Button cell (button cell) is also referred to as button cell, refers to battery of the appearance and size as a small button, generally
For be relatively large in diameter, thinner thickness.Button cell is mainly made of anode, cathode, electrolyte and diaphragm, and in assembling button electricity
Make positive and negative anodes pressing close using support element during pond, using traditional support element, it is easily insufficient contact between positive and negative anodes or
There is the situation of overvoltage, so as to reduce the yields for making button cell.
Invention content
Based on this, it is necessary to which the positive and negative anodes occurred for button cell are insufficient contact or over-pressed so as to reduce knob
The problem of detaining the yields of battery, provides a kind of button cell for improving button cell yields and preparation method thereof.
A kind of button cell, it is described including anode cover, positive plate, diaphragm, negative plate, support element, negative electrode casing and electrolyte
Support element includes gasket and nickel screen；The anode cover faces each other setting and connect with the negative electrode casing forms a closed receiving
Chamber, the positive plate, the diaphragm, the negative plate, the gasket and the nickel screen from close to the anode cover one end to
One end far from the anode cover is contained in the host cavity, and the anode under the elastic reaction of the nickel screen successively
Shell, the positive plate, the diaphragm, the negative plate, the gasket, the nickel screen and the negative electrode casing abut solid between each other
Fixed, the electrolyte is filled in the host cavity.
The gasket is made of stainless steel in one of the embodiments,.
The negative plate is lithium metal piece in one of the embodiments,.
The positive plate includes collector and coated on the active matter on the collector in one of the embodiments,
The collector is made of copper foil or aluminium foil, and the active matter is cobalt acid lithium, nickle cobalt lithium manganate, LiMn2O4, ferrous phosphate
One kind in lithium, graphite, silicon-carbon and lithium titanate.
The electrolyte is made of lithium salts and organic solvent in one of the embodiments,.
The diaphragm is polyolefin porous membrane in one of the embodiments,.
In one of the embodiments, the negative electrode casing include the first rounded bottom case and the first side shell, described first
Side shell circumferentially encloses the periphery set on first bottom case and is directed away from the direction extension of first bottom case, the anode cover
Including rounded the second bottom case and the second side shell, the second side shell circumferentially encloses the periphery set on second bottom case and court
Extending to the direction far from second bottom case, the outer diameter of first side shell is less than the internal diameter of the second side shell, and described the
Side shell, which is sealedly attached in the second side shell, forms the host cavity.
The positive plate, the diaphragm, the negative plate, the gasket and the nickel screen in one of the embodiments,
It is disc-shaped.
The diameter of the positive plate and the negative plate is respectively less than the diameter of the diaphragm in one of the embodiments,.
A kind of button cell production method, includes the following steps：
1) prepare anode cover, positive plate, diaphragm, negative plate, gasket, nickel screen, negative electrode casing and electrolyte；
2) by the anode cover, the positive plate, the diaphragm, the negative plate, the gasket, the nickel screen and described
Negative electrode casing assembles successively, and electrolyte is injected in the host cavity formed in the anode cover and the negative electrode casing to form button
Battery；
3) button cell is sealed.
Button cell provided by the invention and preparation method thereof, using gasket and nickel screen integrally as during support element, in nickel
Under the elastic reaction of net and gasket has certain intensity, can ensure that the pressing between positive plate and negative plate is close, simultaneously
The larger nickel screen of elastic space can be inside buffer battery pressure so that the yields that battery makes significantly is promoted.
Description of the drawings
Fig. 1 is the exploded view of button cell that one embodiment of the invention provides；
Fig. 2 is the flow chart of button cell production method that one embodiment of the invention provides.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " including one or more phases
The arbitrary and all combination of the Listed Items of pass.
Refering to Fig. 1, a preferred embodiment of the present invention provides a kind of button cell 10, which includes anode cover
11st, positive plate 12, diaphragm 13, negative plate 14, support element 15, negative electrode casing 16 and electrolyte, support element 15 include gasket 151 and nickel
Net 152, anode cover 11, which faces each other setting with negative electrode casing 16 and connect between the two, forms a closed host cavity, positive plate 12,
The one end of diaphragm 13, negative plate 14, gasket 151 and nickel screen 152 from close to one end of anode cover 11 to far from anode cover 11 is successively
It is contained in host cavity, anode cover 11, positive plate 12, diaphragm 13, negative plate 14, gasket under the elastic reaction of nickel screen 152
151st, it mutually abuts and fixes between nickel screen 152 and negative electrode casing 16, such electrolyte is filled in host cavity.
Since nickel screen 152 is reticular structure, original free state can be returned to when nickel screen 152 is pressurized, so just
Elastic-restoring force can be generated, under the action of elastic-restoring force one end applied force of nickel screen 152 in negative electrode casing, nickel screen 152 it is another
One end applied force in gasket 151,151 applied force of gasket in negative plate 14 adjacent thereto, 14 applied force of negative plate in diaphragm 13,
13 applied force of diaphragm is in positive plate 12,12 applied force of positive plate phase between anode cover 11, each component of such button cell 10
It mutually abuts and fixes.
In this way, gasket 151 and nickel screen 152 is whole as during support element 15, under the elastic reaction of nickel screen 152 and pad
Piece 151 has certain intensity, can ensure that the pressing between positive plate 12 and negative plate 14 is close, while elastic space is larger
Nickel screen 152 can buffer pressure inside button cell 10 so that the yields that button cell 10 makes significantly is promoted.
In the present embodiment, anode cover 11 includes the second bottom case 111 in disc-shaped and cylindrical the second side shell
112, the second side shell 112 circumferentially encloses the periphery set on the second bottom case 111 and is directed away from the direction extension of the second bottom case 111.
In other embodiments, the shape of anode cover 11 is not limited, and anode cover 11 can such as be set to include the second bottom in disc-shaped
Shell 111 and cylindrical the second side shell 112, the second side shell 112 circumferentially enclose the periphery set on the second bottom case 111 and towards remote
Direction extension from the second bottom case 111, and it is equipped with in-flanges, in-flanges in end of the second side shell 112 far from the second bottom case 111
The second limiting slot is formed between the second side shell 112.
In the present embodiment, positive plate 12 is disc-shaped.Specifically, positive plate 12 includes collector and coated on collector
On active matter, collector is made of copper foil or aluminium foil, active matter may be used cobalt acid lithium, nickle cobalt lithium manganate, LiMn2O4,
One kind in LiFePO 4, graphite, silicon-carbon and lithium titanate.
In the present embodiment, diaphragm 13 is disc-shaped.Diaphragm 13 will have the following performance：With electronic isolation, ensure
The mechanical isolation of positive and negative anodes；There are certain aperture and porosity, ensure low resistance and high ionic conductivity, have to lithium ion
Good permeability；Since the solvent of electrolyte is highly polar organic compound, the necessary electrolyte resistance corrosion of diaphragm 13 has foot
Enough chemistry and electrochemical stability；The wellability of electrolyte is got well and there is enough imbibition moisture-retaining capacities；With enough
Mechanical property, including puncture strength, tensile strength etc., but thickness is as small as possible；Spatial stability and planarization are good；And thermostabilization
Property and to automatically shut down protective value good.Specifically, diaphragm 13 is polyolefin porous membrane.
In the present embodiment, negative plate 14 is disc-shaped, and positive plate 12 and the diameter of negative plate 14 are respectively less than diaphragm 13
Diameter, to ensure that positive plate 12 and negative plate 14 are sufficiently spaced from by diaphragm 13.Specifically, negative plate 14 is lithium metal piece.
In the present embodiment, gasket 151 is disc-shaped.Specifically, gasket 151 is made of stainless steel, stainless steel
Piece is smooth and with certain intensity, can fully ensure that the pressing between positive plate 12 and negative plate 14 is close.
In the present embodiment, negative electrode casing 16 includes the first bottom case 161 in disc-shaped and the first cylindrical side shell
162, the first side shell 162 circumferentially encloses the periphery set on the first bottom case 161 and is directed away from the direction extension of the first bottom case 161,
The outer diameter of first side shell 162 is less than the internal diameter of the second side shell 112, and the first side shell 162 is sealedly attached in the second side shell 112 and is formed
Above-mentioned host cavity.In other embodiments, the shape of negative electrode casing 16 is not limited, and negative electrode casing 16 can such as be set to include in disk
First bottom case 161 of shape and the first cylindrical side shell 162, the first side shell 162 circumferentially enclose the week set on the first bottom case 161
Edge and the direction extension for being directed away from the first bottom case 161, and in end of the first side shell 162 far from the first bottom case 161 equipped with outer
Flange forms the first limiting slot between flanging and the first side shell 162, the first side shell 162 is set in the second side shell 112 and varus
Checkpost is connected in the first limiting slot, and flanging is connected in the second limiting slot and fixes the first side shell 162 with the second side shell 112,
Such anode cover 11 connect fixation with negative electrode casing 16.
In the present embodiment, electrolyte plays the role of conducting ion between button cell positive and negative anodes, is lithium-ion electric
Pond obtains the guarantee of the advantages that high voltage, high specific energy.Electrolyte is generally by the organic solvent of high-purity, electrolyte lithium salt, necessity
The raw materials such as additive, be formulated under certain condition, by a certain percentage.
Referring to Fig.2, a preferred embodiment of the present invention provides a kind of button cell production method, include the following steps：
S110：Prepare anode cover 11, positive plate 12, diaphragm 13, negative plate 14, gasket 151, nickel screen 152, cathode 16 and electricity
Solve liquid；
S120：By the anode cover 11, the positive plate 12, the diaphragm 13, the negative plate 14, the gasket 151,
The nickel screen 152 and the negative electrode casing 16 assemble successively, and the receiving formed in the anode cover 11 and the negative electrode casing 16
Intracavitary injects electrolyte to form button cell 10；
Specifically, the electrolyte injected in host cavity will be with guarantee fully infiltration positive plate 12, diaphragm 13 and negative plate
14。
S130：The button cell 10 is sealed.
Further, step is further included after step s 130：
10 remained on surface electrolyte of button cell is dried, and is shelved at room temperature 12 hours；
Electric performance test is carried out to the button cell 10 after aging.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of button cell, which is characterized in that including anode cover, positive plate, diaphragm, negative plate, support element, negative electrode casing and electricity
Liquid is solved, the support element includes gasket and nickel screen；The anode cover faces each other setting with the negative electrode casing and connect formation one
Closed host cavity, the positive plate, the diaphragm, the negative plate, the gasket and the nickel screen are from close to the anode cover
One end be contained in successively in the host cavity, and the institute under the elastic reaction of the nickel screen to far from one end of the anode cover
It is mutual to state anode cover, the positive plate, the diaphragm, the negative plate, the gasket, the nickel screen and the negative electrode casing
It abuts and fixes, the electrolyte is filled in the host cavity.
2. button cell according to claim 1, which is characterized in that the gasket is made of stainless steel.
3. button cell according to claim 1, which is characterized in that the negative plate is lithium metal piece.
4. button cell according to claim 1, which is characterized in that the positive plate includes collector and coated on described
Active matter on collector, the collector are made of copper foil or aluminium foil, and the active matter is cobalt acid lithium, nickel cobalt mangaic acid
One kind in lithium, LiMn2O4, LiFePO 4, graphite, silicon-carbon and lithium titanate.
5. button cell according to claim 1, which is characterized in that the electrolyte is made of lithium salts and organic solvent.
6. button cell according to claim 1, which is characterized in that the diaphragm is polyolefin porous membrane.
7. button cell according to claim 1, which is characterized in that the negative electrode casing includes the first bottom case in disc-shaped
And the first cylindrical side shell, first side shell circumferentially enclose the periphery set on first bottom case and are directed away from described
The direction extension of first bottom case, the anode cover includes the second bottom case and cylindrical the second side shell in disc-shaped, described
The second side shell circumferentially encloses the periphery set on second bottom case and is directed away from the direction extension of second bottom case, and described the
The outer diameter of side shell is less than the internal diameter of the second side shell, and first side shell, which is sealedly attached in the second side shell, forms institute
State host cavity.
8. according to claim 1-7 any one of them button cells, which is characterized in that the positive plate, the diaphragm, described
Negative plate, the gasket and the nickel screen are disc-shaped.
9. button cell according to claim 8, which is characterized in that the diameter of the positive plate and the negative plate is small
In the diameter of the diaphragm.
10. a kind of button cell production method, which is characterized in that include the following steps：
1) prepare anode cover, positive plate, diaphragm, negative plate, gasket, nickel screen, negative electrode casing and electrolyte；
2) by the anode cover, the positive plate, the diaphragm, the negative plate, the gasket, the nickel screen and the cathode
Shell assembles successively, and injection electrolyte is electric to form button in the host cavity formed in the anode cover and the negative electrode casing
Pond；
3) button cell is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711418202.8A CN108232282A (en) | 2017-12-25 | 2017-12-25 | Button cell and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711418202.8A CN108232282A (en) | 2017-12-25 | 2017-12-25 | Button cell and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108232282A true CN108232282A (en) | 2018-06-29 |
Family
ID=62648719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711418202.8A Withdrawn CN108232282A (en) | 2017-12-25 | 2017-12-25 | Button cell and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108232282A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676477A (en) * | 2019-09-12 | 2020-01-10 | 深圳市科晶智达科技有限公司 | Automatic batch sample preparation method for button batteries |
| CN112670512A (en) * | 2020-12-24 | 2021-04-16 | 新利达电池实业（德庆）有限公司 | Alkaline button cell and positive plate of button cell |
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| EP1205986A1 (en) * | 2000-04-05 | 2002-05-15 | Nitto Denko Corporation | Separator for battery |
| CN103247824A (en) * | 2012-02-14 | 2013-08-14 | 上海市纳米科技与产业发展促进中心 | Button-type lithium-ion battery based on novel carbon-based material and preparation method of button-type lithium-ion battery |
| CN104756292A (en) * | 2012-10-24 | 2015-07-01 | 东海炭素株式会社 | Process for manufacturing graphite powder for lithium secondary battery negative electrode material |
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| CN206148519U (en) * | 2016-11-11 | 2017-05-03 | 江西紫宸科技有限公司 | Novel button cell gasket |
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| CN107221654A (en) * | 2017-05-25 | 2017-09-29 | 济南大学 | A kind of three-dimensional porous nest like silicon-carbon composite cathode material and preparation method thereof |
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2017
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| EP1205986A1 (en) * | 2000-04-05 | 2002-05-15 | Nitto Denko Corporation | Separator for battery |
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| CN104756292A (en) * | 2012-10-24 | 2015-07-01 | 东海炭素株式会社 | Process for manufacturing graphite powder for lithium secondary battery negative electrode material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676477A (en) * | 2019-09-12 | 2020-01-10 | 深圳市科晶智达科技有限公司 | Automatic batch sample preparation method for button batteries |
| CN112670512A (en) * | 2020-12-24 | 2021-04-16 | 新利达电池实业（德庆）有限公司 | Alkaline button cell and positive plate of button cell |
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Address after: 516000 63 District, Hui Tai Industrial Park, Zhongkai hi tech Zone, Huizhou, Guangdong Applicant after: HUIZHOU JINNENG BATTERY CO.,LTD. Applicant after: HUIZHOU TECHNE Corp. Address before: 516006 63 District, Hui Tai Industrial Park, Zhongkai hi tech Zone, Huizhou, Guangdong Applicant before: HUIZHOU TCL HYPERPOWER BATTERIES Inc. Applicant before: HUIZHOU TECHNE Corp. |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20180802 Address after: 516000 63 District, Hui Tai Industrial Park, Zhongkai hi tech Zone, Huizhou, Guangdong Applicant after: HUIZHOU JINNENG BATTERY CO.,LTD. Address before: 516000 63 District, Hui Tai Industrial Park, Zhongkai hi tech Zone, Huizhou, Guangdong Applicant before: HUIZHOU JINNENG BATTERY CO.,LTD. Applicant before: HUIZHOU TECHNE Corp. |
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| CB02 | Change of applicant information |
Address after: 516000 Huitai Industrial Park 63, Zhongkai High-tech Zone, Huizhou City, Guangdong Province Applicant after: Huizhou Yiwei Energy Battery Co.,Ltd. Address before: 516000 Huitai Industrial Park 63, Zhongkai High-tech Zone, Huizhou City, Guangdong Province Applicant before: HUIZHOU JINNENG BATTERY CO.,LTD. |
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180629 |