CN106099164A - A kind of cylindrical battery three electrode assembly and assemble method thereof - Google Patents
A kind of cylindrical battery three electrode assembly and assemble method thereof Download PDFInfo
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- CN106099164A CN106099164A CN201610707851.9A CN201610707851A CN106099164A CN 106099164 A CN106099164 A CN 106099164A CN 201610707851 A CN201610707851 A CN 201610707851A CN 106099164 A CN106099164 A CN 106099164A
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- reference electrode
- lower mold
- housing
- cylindric core
- electrode
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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
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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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of cylindrical battery three electrode assembly and assemble method thereof.Three electrode assemblies include housing, positive plate, negative plate, barrier film, mold, lower mold, reference electrode, reference electrode post, its septation is located between each layer of positive plate and each layer of negative plate respectively, and jointly enclosed rolled into cylindric core by positive plate, negative plate, barrier film three, cylindric core is filled with electrolyte；Described cylindric core is installed in the housing, lower mold is arranged on the opening part of housing, the end of reference electrode post is inserted into the cavity of cylindric core central part from the centre bore of lower mold, reference electrode is arranged on the end of reference electrode post, and mold is tightened in lower mold by screw thread.Present invention seek to address that three electrode assembly structures of the prior art are complicated, the defects such as capacity is low, and the property used for reference is poor, poor sealing, and filled up the blank of the three-electrode system of cylindrical lithium ion battery.
Description
Technical field
The present invention relates to field of batteries, particularly relate to a kind of cylindrical battery three electrode assembly and assemble method thereof.
Background technology
Use three-electrode system to extract battery plus-negative plate electromotive force to contrast with reference electrode potential, electrochemistry can be directly obtained
The change of both positive and negative polarity current potential in course of reaction.And then from inside battery reaction mechanism, secondary anti-avoiding inside battery to occur
In the case of Ying, study the performances such as circulating battery, high/low temperature discharge and recharge, rate charge-discharge.Set at battery structure design, pole piece
Meter, both positive and negative polarity ratio, material adapted, bath composition optimization etc. have very important directive significance.Therefore it provides performance is steady
Fixed, the three-electrode structure of simple in construction is extremely important.
As patent of invention (application publication number CN 105470577 A) discloses a kind of flexible packing lithium ion battery three electrode
Assemble method, the method is without extra device and exotic electrolytes, and reference electrode is direct from battery in battery assembling process
Packaging is drawn, fixing by aluminum plastic film heat-sealing, the flexible packing lithium ion battery of any model can be suitable for.Use plastic film heat-sealing solid
Fixed, poor sealing, between homonymy lug, easily there is sepage in gap, easily causes test result abnormal.Utility model (the patent No.
ZL 200820210512.0) disclose a kind of simulation button lithium ion battery three-electrode system, may be used for testing button cell
Formula bipolar electrode performance, preparation is simple, and it is convenient to test.This three electrode assemblies density battery capacity is low, and poor stability, referentiability is relatively
Weak.Patent of invention (CN 103500859A) discloses a kind of lithium ion battery three electrode assemblies, this three electrode include housing with
Upper cover, is joined directly together lug and the reference electrode of pole with battery core by lug, and battery core is fixed by bolt, it is not necessary to
At once ensured the compact of battery core by evacuation, there is good sealing and contact.Its device manufactures and assemble method mistake
Journey is complicated, relatively costly, and big with actual battery architectural difference, and referentiability is poor.
There is various defects in current three-electrode structure, capacity is low, structure is complicated, sealing is poor, structure is electric with entity
Pond difference is big, it is impossible to truly reflect the performance characteristic of actual battery.Electrolyte is filled more or not enough, causes inside battery pole
The change of change effect, can not realize the accurate characterization to battery performance equally.And at present invention and utility model in have no appoint
What is applicable to the three-electrode system of cylindrical lithium ion battery.
Summary of the invention
In order to solve problem above, the present invention provides a kind of cylindrical battery three electrode assembly and assemble method thereof, its knot
Structure is simple, good airproof performance, and closest to entity battery structure, the property used for reference is high.
The technical solution used in the present invention is as follows: a kind of cylindrical battery three electrode assembly, including housing, positive plate, bears
Pole piece, barrier film, mold, lower mold, reference electrode, reference electrode post, its septation be located in respectively each layer of positive plate and
Between each layer of negative plate, and jointly enclosed rolled into cylindric core by positive plate, negative plate, barrier film three, cylindric core
In be filled with electrolyte；Described cylindric core is installed in the housing, and lower mold is arranged on the sealing part of housing, reference electrode post
End be inserted into the cavity of cylindric core central part from the centre bore of lower mold, reference electrode is arranged on reference electrode post
End on and be positioned in the cavity of cylindric core central part, mold is tightened in lower mold by screw thread, at shell
The inside bottom of body is welded with negative electrode lug, is welded with anode ear on the bottom surface of lower mold.
Preferably, it is provided with Upper gasket on the top of cylindric core, is provided with lower gasket in the bottom of cylindric core.
Preferably, described anode ear is bending lug.
Preferably, the junction in lower mold Yu housing is provided with insulated enclosure circle.
Preferably, the top of described reference electrode post is provided with annular projection portion along week side, two planes up and down of lobe
Place is respectively equipped with insulated enclosure pad and lower insulated enclosure pad.
Preferably, reference electrode and membrane contacts.
Described a kind of cylindrical battery three electrode assembly, have employed following assemble method:
1) production gained positive plate, negative plate and barrier film are made cylindric core according to production procedure；
2) cylindric core and lower gasket are encased in housing, at the bottom welding negative electrode lug of housing, in cylindric core
Upper gasket, then slot rolling, some glue are laid in top；
3) anode ear is welded in the lower mold with sealing ring；
4) dry pole group, note electrolyte, bending cathode ear, then lid insulated enclosure circle and lower mold, then set with production line sealing
The standby opening sealing housing；
5) the reference electrode post with reference electrode is inserted into cylindric core cavity from the centre bore of lower mold, wherein,
Two planes up and down of reference electrode band of column shape lobe are respectively provided with insulated enclosure pad；
6) mold is tightened in lower mold by screw thread, and ensures battery no leakage, now assemble complete.
The invention has the beneficial effects as follows:
1, reel pin position during reference electrode is placed in core, does not affect structure between original battery pole piece；
2, may be used for Ni-MH battery, lead-acid battery, smee cell, lithium ion battery；
3, reference electrode and pole are at internal the occupied spatial volume of battery core, can offset by changing lower die structure, and then
Ensure that battery space (intrinsic pressure) is consistent with entity battery；
4, compared with entity battery, the core strueture of both inside and capacity etc. are entirely without difference, at the electricity of analysis entities battery
Chemical property feature and performance degradation have the property used for reference the most really；
5, the positive plate of present invention employing, barrier film, negative plate, housing, Upper gasket, lower gasket, electrolyte, positive and negative lug, termination
Adhesive tape, protection adhesive tape, cap sealed circle all use production line, and preparation process is simple, it is not necessary to special construction and technique.
Cylindrical battery three electrode assembly that the inventive method assembles, can be in battery preliminary filling, formation process or carrying out
During electro-chemical test, simultaneously detection battery plus-negative plate between change in voltage situation, and reference electrode with between anelectrode and ginseng
Than electrode with the situation of change of voltage between negative electrode, above change in voltage situation is compared, be analyzed, can be as
According to optimizing preliminary filling, chemical conversion flow process it can also be used to optimize battery design.
Accompanying drawing explanation
Fig. 1 is the structural representation of cylindrical battery three electrode assembly of the present invention.
Detailed description of the invention
A kind of cylindrical battery three electrode assembly as shown in Figure 1, including housing 9, positive plate 12, negative plate 11, barrier film
10, mold 2, lower mold 4, reference electrode 14, reference electrode post 1, its septation 10 is located in each layer of positive plate 12 respectively
And between each layer of negative plate 11, and jointly enclosed rolled into cylindric core by positive plate 12, negative plate 11, barrier film 10 three,
Cylindric core is filled with electrolyte；Described cylindric core is arranged in housing 9, and lower mold 4 is arranged on the sealing of housing 9
Place, the end of reference electrode post 1 is inserted into the cavity of cylindric core central part from the centre bore of lower mold 4, reference electrode
On 14 ends being arranged on reference electrode post 1 and be positioned in the cavity of cylindric core central part, mold 2 is screwed by screw thread
Being fixed in lower mold 4, the inside bottom at housing 9 is welded with negative electrode lug 15, is welded with anode ear on the bottom surface of lower mold 4
7.It is provided with Upper gasket 8 on the top of cylindric core, is provided with lower gasket 16 in the bottom of cylindric core.Described anode ear 7 is
Bending lug.In the junction of lower mold 4 with housing 9, insulated enclosure circle 6 is installed.The edge, top of described reference electrode post 1
All sides are provided with annular projection portion, are respectively equipped with insulated enclosure pad 3 and lower insulated enclosure at two planes up and down of lobe
Pad 5.Reference electrode 14 contacts with barrier film 10.
Described a kind of cylindrical battery three electrode assembly, is carried out as follows when assembling:
1) production gained positive plate 12, negative plate 11 and barrier film 10 are made cylindric core according to production procedure；
2) cylindric core and lower gasket 16 are encased in housing 9, at the bottom welding negative electrode lug 15 of housing 9, cylindric
Upper gasket 8, then slot rolling, some glue are laid in the top of core；
3) anode ear 7 is welded in the lower mold 4 with sealing ring 6；
4) dry pole group, note electrolyte, bending cathode ear 7, then lid insulated enclosure circle 6 and lower mold 4, then seal with production line
Equipment seals the opening of housing 9；
5) the reference electrode post 1 with reference electrode 14 is inserted into cylindric core cavity from the centre bore of lower mold 4, its
In, two planes up and down in reference electrode post 1 annular projection portion are respectively provided with insulated enclosure pad 3 and lower insulated enclosure pad
5；
6) mold 2 is tightened in lower mold 4 by screw thread, and ensures battery no leakage, now assemble complete.
Claims (7)
1. cylindrical battery three electrode assembly, it is characterised in that: include housing (9), positive plate (12), negative plate (11),
Barrier film (10), mold (2), lower mold (4), reference electrode (14), reference electrode post (1), its septation (10) sandwiched respectively
Between each layer of positive plate (12) and each layer of negative plate (11), and by positive plate (12), negative plate (11), barrier film (10) three
Person jointly encloses and rolls into cylindric core, is filled with electrolyte in cylindric core；Described cylindric core is arranged on housing (9)
In, lower mold (4) is arranged on the sealing part of housing (9), and the end of reference electrode post (1) inserts from the centre bore of lower mold (4)
In the cavity of cylindric core central part, reference electrode (14) is arranged on the end of reference electrode post (1) and is positioned at cylinder
In the cavity of shape core central part, mold (2) is tightened in lower mold (4) by screw thread, at the bottom of the inner side of housing (9)
Portion is welded with negative electrode lug (15), is welded with anode ear (7) on the bottom surface of lower mold (4).
2. a kind of cylindrical battery three electrode assembly as claimed in claim 1, it is characterised in that: on the top of cylindric core
It is provided with Upper gasket (8), is provided with lower gasket (16) in the bottom of cylindric core.
3. a kind of cylindrical battery three electrode assembly as claimed in claim 1, it is characterised in that: described anode ear (7) is curved
Folding shape lug.
4. a kind of cylindrical battery three electrode assembly as claimed in claim 1, it is characterised in that: at lower mold (4) and housing
(9) junction is provided with insulated enclosure circle (6).
5. a kind of cylindrical battery three electrode assembly as claimed in claim 1, it is characterised in that: described reference electrode post (1)
Top along week side be provided with annular projection portion, be respectively equipped with at two planes up and down of lobe insulated enclosure pad (3) and
The most exhausted sealing edge pad (5).
6. a kind of cylindrical battery three electrode assembly as claimed in claim 1, it is characterised in that: reference electrode (14) and barrier film
(10) contact.
7. the assemble method of a kind of cylindrical battery three electrode assembly as described in claim 1-6 is arbitrary, it is characterised in that press
Carry out according to following steps:
1) gained positive plate (12), negative plate (11) and barrier film (10) will be produced and make cylindric core according to production procedure；
2) cylindric core and lower gasket (16) are encased in housing (9), at the bottom welding negative electrode lug (15) of housing (9),
Upper gasket (8), then slot rolling, some glue is laid on the top of cylindric core；
3) anode ear (7) is welded in the lower mold (4) with insulated enclosure circle (6)；
4) dry pole group, note electrolyte, bending cathode ear (7), then lid insulated enclosure circle (6) and lower mold (4), then with producing
Line sealing device seals the opening of housing (9)；
5) the reference electrode post (1) with reference electrode (14) is inserted into cylindric core from the centre bore of lower mold (4) empty
In chamber, wherein, two planes up and down in reference electrode post (1) annular projection portion be respectively provided with insulated enclosure pad (3) and under
Insulated enclosure pad (5)；
6) mold (2) is tightened in lower mold (4) by screw thread, and ensures battery no leakage, now assemble complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707851.9A CN106099164B (en) | 2016-08-23 | 2016-08-23 | A kind of three electrode assembly of cylindrical battery and its assemble method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707851.9A CN106099164B (en) | 2016-08-23 | 2016-08-23 | A kind of three electrode assembly of cylindrical battery and its assemble method |
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| Publication Number | Publication Date |
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| CN106099164A true CN106099164A (en) | 2016-11-09 |
| CN106099164B CN106099164B (en) | 2018-08-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654361A (en) * | 2017-01-20 | 2017-05-10 | 中天储能科技有限公司 | Three-electrode device and preparation method thereof |
| CN109116256A (en) * | 2018-09-20 | 2019-01-01 | 昆明云大新能源有限公司 | A kind of electrochemical test device for three-electrode system and its electrochemical test method |
| CN109725257A (en) * | 2017-10-27 | 2019-05-07 | 成都安普利菲能源技术有限公司 | High-throughput button battery performance detecting system and its method |
| KR20200025056A (en) * | 2018-08-29 | 2020-03-10 | 주식회사 엘지화학 | Manufacturing method for cylindical theree electrode cell and cylindical theree electrode cell manufactured by the same |
| CN111929351A (en) * | 2020-09-14 | 2020-11-13 | 昆明云大新能源有限公司 | Double-sealing type multifunctional electrochemical testing device and assembling and using method thereof |
| CN114018994A (en) * | 2021-09-30 | 2022-02-08 | 广东微电新能源有限公司 | Novel three-electrode battery testing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654361A (en) * | 2017-01-20 | 2017-05-10 | 中天储能科技有限公司 | Three-electrode device and preparation method thereof |
| CN109725257B (en) * | 2017-10-27 | 2022-06-21 | 成都安普利菲能源技术有限公司 | High-flux button cell performance detection system and method thereof |
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| KR102558819B1 (en) * | 2018-08-29 | 2023-07-24 | 주식회사 엘지에너지솔루션 | Manufacturing method for cylindical theree electrode cell and cylindical theree electrode cell manufactured by the same |
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| KR20200025056A (en) * | 2018-08-29 | 2020-03-10 | 주식회사 엘지화학 | Manufacturing method for cylindical theree electrode cell and cylindical theree electrode cell manufactured by the same |
| US11450878B2 (en) * | 2018-08-29 | 2022-09-20 | Lg Energy Solution, Ltd. | Method for manufacturing cylindrical three-electrode cell, and cylindrical three-electrode cell manufactured thereby |
| CN111656599B (en) * | 2018-08-29 | 2023-09-05 | 株式会社Lg新能源 | Method for producing cylindrical three-electrode cells and cylindrical three-electrode cells produced thereby |
| CN109116256A (en) * | 2018-09-20 | 2019-01-01 | 昆明云大新能源有限公司 | A kind of electrochemical test device for three-electrode system and its electrochemical test method |
| CN109116256B (en) * | 2018-09-20 | 2024-04-05 | 昆明云大新能源有限公司 | Three-electrode system electrochemical testing device and electrochemical testing method thereof |
| CN111929351A (en) * | 2020-09-14 | 2020-11-13 | 昆明云大新能源有限公司 | Double-sealing type multifunctional electrochemical testing device and assembling and using method thereof |
| CN114018994A (en) * | 2021-09-30 | 2022-02-08 | 广东微电新能源有限公司 | Novel three-electrode battery testing device |
| CN114018994B (en) * | 2021-09-30 | 2024-04-16 | 广东微电新能源有限公司 | Three-electrode battery testing device |
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| CN106099164B (en) | 2018-08-17 |
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