CN106785104B - A kind of packaging method of cathode of sodium-sulfur cell - Google Patents
A kind of packaging method of cathode of sodium-sulfur cell Download PDFInfo
- Publication number
- CN106785104B CN106785104B CN201611191759.8A CN201611191759A CN106785104B CN 106785104 B CN106785104 B CN 106785104B CN 201611191759 A CN201611191759 A CN 201611191759A CN 106785104 B CN106785104 B CN 106785104B
- Authority
- CN
- China
- Prior art keywords
- sodium
- cathode
- vacuum
- welding
- sulfur cell
- 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.)
- Active
Links
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
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/39—Accumulators not provided for in groups H01M10/05-H01M10/34 working at high temperature
- H01M10/3909—Sodium-sulfur 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of packaging methods of cathode of sodium-sulfur cell, for that will include the note sodium part and negative lug of electrolyte ceramics pipe, bursting tube and cathode sealing cover, it seals, include the following steps: to infuse sodium step: under vacuum conditions injecting liquid metal sodium in note sodium part, and by gas pressure, make liquid metal sodium full of the reaction chamber between bursting tube and electrolyte ceramics pipe；Fixing step by welding: the welding fixture infused in sodium part and negative lug, with vacuum welding case is fixed；Vacuum step: being first evacuated to 10Pa for the air pressure in vacuum welding case hereinafter, the topping up into vacuum welding case again, makes the air pressure in vacuum welding case be no more than 2 × 104Pa；Welding step: being bonded the bottom surface of negative lug with the coaxial stress in the top surface of cathode sealing cover, carries out laser welding along the annular gap between negative lug and cathode sealing cover excircle, negative lug and cathode sealing cover are fixed, form cathode of sodium-sulfur cell；Cathode of sodium-sulfur cell is taken out finally by blowdown step.
Description
Technical field
The present invention relates to a kind of packaging methods of cathode of sodium-sulfur cell.
Background technique
Sodium-sulphur battery is one kind using sulphur as positive active material, and metallic sodium is negative electrode active material, with β, and "-aluminium oxide is electric
Solve the energy-storage battery that matter ceramic tube is electrolyte membrance.Sodium-sulphur battery is under 300~330 DEG C of operating temperatures, and sodium ion is through electricity
Reversible reaction occurs between solution matter diaphragm and sulphur, forms the release and storage of energy.As the metallic sodium of negative electrode active material,
Since with strong corrosive, and easily, generation burns or even explodes, therefore, in sodium-sulphur battery, need to effectively improve as far as possible
The utilization rate of metallic sodium.In the sodium-sulphur battery of China's early development, increase through capillary action in electrolyte ceramics pipe
The contact area of metallic sodium and electrolyte ceramics pipe internal surface, and when carrying out oral area encapsulation using the inert atmosphere in glove box
It is encapsulated under environment, is micro-positive pressure when encapsulation.
The utilization efficiency of sodium in sodium-sulphur battery is improved through capillary action, it is difficult to guarantee the consistency of sodium-sulphur battery performance.
In addition, the packaging technology requires cathode of sodium-sulfur cell in cold conditions, i.e., it is micro-positive pressure under room temperature, it is warm when being in operation in sodium-sulphur battery
Under degree, pressure can be run under higher air pressure for a long time of about 2 standard atmospheric pressures, sodium-sulphur battery, cathode of sodium-sulfur cell it is each
Sealing-in position can generate stress, substantially reduce the service life of sodium-sulphur battery.
Summary of the invention
The purpose of the invention is to overcome the deficiencies of the prior art and provide a kind of packaging method of cathode of sodium-sulfur cell,
It may insure the consistency of sodium-sulphur battery properties of product, extend the service life of sodium-sulphur battery.
Realizing a kind of technical solution of above-mentioned purpose is: a kind of packaging method of cathode of sodium-sulfur cell, for that will include electricity
The note sodium part and negative lug for solving matter ceramic tube, bursting tube and cathode sealing cover, seal, including the following steps:
Note sodium step: liquid metal sodium is injected in the note sodium part under vacuum conditions, and through capillary action, makes liquid
State metallic sodium is full of the reaction chamber between the bursting tube and the electrolyte ceramics pipe；
Fixing step by welding: the welding fixture in the note sodium part and the negative lug, with vacuum welding case is solid
It is fixed；
Vacuum step: the air pressure in the vacuum welding case is first evacuated to 10Pa hereinafter, again to the vacuum welding
Connecing topping up in case extremely, makes the air pressure in the vacuum welding case be no more than 2 × 104Pa；
Welding step: being bonded the bottom surface of the negative lug with the coaxial stress in top surface of the cathode sealing cover, along
Annular gap between the negative lug and the cathode sealing cover excircle carries out laser welding, by the negative lug with
The cathode sealing cover is fixed, and cathode of sodium-sulfur cell is formed；
Blowdown step: letting out vacuum to the vacuum welding case, opens the chamber door of the vacuum welding case, takes out sodium-sulphur battery
Cathode.
Further, in the note sodium step, liquid metal sodium is by being plugged on the center at cathode sealing cover center
Note sodium needle in hole injects the note sodium part.
Further, in the note sodium step, liquid metal sodium is cooled down in the atmosphere of inert gas.
Further, in the fixing step by welding, the note sodium part is fixed in the lower fixture of the welding fixture, institute
Negative lug is stated to be clamped by the upper grip of the welding fixture.
Further, in the welding step, the air pressure in the vacuum welding case is kept constant.
Further, it in the welding step, is inputted by the pumping and inert gas of the vacuum pump carried out simultaneously
The inflation of pump, to keep the constant of the air pressure in the vacuum welding case.
Further, welding step terminates, the vacuum pump and the inert gas front pump close synchronously.
Using a kind of technical solution of the packaging method of cathode of sodium-sulfur cell of the invention, for that will include that electrolyte is made pottery
The note sodium part and negative lug of porcelain tube, bursting tube and cathode sealing cover, seal, including the following steps: note sodium step:
Liquid metal sodium is injected in the note sodium part under vacuum condition, and through capillary action, is full of liquid metal sodium and is located at institute
State the reaction chamber between bursting tube and the electrolyte ceramics pipe；Fixing step by welding: by the note sodium part and described negative
Welding fixture in pole tab, with vacuum welding case is fixed；Vacuum step: first the air pressure in the vacuum welding case is taken out true
Sky is to 10Pa hereinafter, into the vacuum welding case, topping up extremely, surpasses the air pressure in the vacuum welding case not again
Cross 2 × 104Pa；Welding step: it is bonded the bottom surface of the negative lug with the coaxial stress in top surface of the cathode sealing cover, edge
Annular gap between the negative lug and the cathode sealing cover excircle carry out laser welding, by the negative lug
It is fixed with the cathode sealing cover, forms cathode of sodium-sulfur cell；Blowdown step: vacuum is let out to the vacuum welding case, opens institute
The chamber door of vacuum welding case is stated, cathode of sodium-sulfur cell is taken out.Its technical effect is that: first is that can effectively ensure that in cathode of sodium-sulfur cell
The consistency of metallic sodium and electrolyte ceramics pipe contact area, second is that can guarantee sodium-sulphur battery in running temperature, sodium sulphur is electric
Pressure inside the cathode of pond is still negative pressure, guarantees the consistency of cathode of sodium-sulfur cell internal pressure, to effectively prevent sodium sulphur
Battery package failure by thermal stress, it is ensured that the consistency of sodium-sulphur battery properties of product, extends the use of sodium-sulphur battery
Service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for infusing sodium part.
Fig. 2 is the operation chart that sodium step is infused in a kind of packaging method of cathode of sodium-sulfur cell of the invention.
Fig. 3 is the operation chart of welding step in a kind of packaging method of cathode of sodium-sulfur cell of the invention.
Fig. 4 is the structural schematic diagram of cathode of sodium-sulfur cell after the completion of encapsulation.
Specific embodiment
Referring to Fig. 1, the present inventor in order to preferably understand technical solution of the present invention, is led to below
Specifically embodiment is crossed, and will be described in detail with reference to the accompanying drawings:
Cathode of sodium-sulfur cell includes note sodium part and negative lug 9.The note sodium part includes electrolyte ceramics pipe 1 and coaxial sleeve
Connect the bursting tube 2 in 1 radially inner side of electrolyte ceramics pipe.The top of electrolyte ceramics pipe 1 is open end, is sealed with ceramic exhausted
Edge ring 3.It is closed by cathode sealing cover 8 at the top of bursting tube 2.The radial center of cathode sealing cover 8 is equipped with for infusing in sodium
Heart hole 81.It is connected between the top surface of ceramic insulation ring 3 and the excircle of cathode sealing cover 8 by cathode sealing ring 5.Cathode envelope
Ring 5 is connect to close the reaction chamber between 2 radial direction of electrolyte ceramics pipe 1 and bursting tube.Bottom surface and pottery along ceramic insulation ring 3
The outer circumference surface of porcelain insulating ring 3, sealing-in anode sealing ring 4.Liquid metal is stored in bursting tube 2 and the reaction chamber
Sodium occurs anti-wherein the liquid metal sodium in the reaction chamber can pass through electrolyte ceramics pipe 1 with the liquid-state sulfur of anode
It answers.The bottom of bursting tube 2 is equipped with the bottom through-hole 21 that can be connected to bursting tube 2 with the reaction chamber.
A kind of packaging method of cathode of sodium-sulfur cell of the invention, including the following steps:
Note sodium step: the note sodium part that note sodium is treated in vacuum tank carries out vacuum impregnating sodium, in vacuum tank, will infuse sodium needle 10
It is inserted into the centre bore 81 of cathode sealing cover 8, liquid metal sodium injects bursting tube 2 from centre bore 81, and passes through 2 bottom of bursting tube
The bottom through-hole 21 in portion is sealed by bursting tube 2, electrolyte ceramics pipe 1, ceramic insulation ring 3, cathode sealing ring 5 and cathode
In the reaction chamber that lid 8 is surrounded, and the reaction chamber is full of by gas pressure.Remaining liquid metallic sodium fills bursting tube
In 2, and bursting tube 2 and the indoor air of the reaction chamber are discharged.
For the oxidation for preventing liquid metal sodium, the atmosphere in the vacuum tank is necessary for inert atmosphere, liquid metal sodium
It must cool down in an inert atmosphere.
Fixing step by welding: it after the liquid metal sodium solidification in the reaction chamber and bursting tube 2, by note sodium part and bears
Pole tab 9 is put into togerther vacuum welding case, and is fixed with welding fixture.The note sodium part is consolidated by the lower fixture of the welding fixture
Fixed, negative lug 9 is clamped by the upper grip of the welding fixture.
Vacuum step: closing the chamber door of the vacuum welding case, vacuumizes to the vacuum welding case.
First the vacuum welding case is vacuumized using vacuum pump, by the air in bursting tube 2 from 8 center of cathode sealing cover
Centre bore 81 extract out, when 10Pa or less is down in the air pressure in the vacuum welding case, closes the vacuum pump, pass through inertia
Gas front pump supplements inert atmosphere into the vacuum welding case to 2 × 104Pa。
Welding step: the negative lug 9 of the upper grip clamping declines, and makes bottom surface and the cathode sealing cover 8 of negative lug 9
Top surface coaxial stress fitting, the binding post 91 of negative lug 9 is located at the surface of centre bore 81, along negative lug 9 and bears
Annular gap between 8 excircle of pole sealing cover carries out laser welding, and negative lug 9 and cathode sealing cover 8 is fixed.
In laser beam welding, the pumping of the vacuum pump and the inert gas front pump topping up simultaneously into
Row, by using the flow control valve on the vacuum pump and the inert gas front pump, so that in the vacuum welding case
Air pressure 2 × 104Pa, which is kept constant to welding, to be terminated, and laser welding finishes, the vacuum pump and inert gas input
Pump synchronization automatic closing.
Blowdown step: letting out vacuum to the vacuum welding case, opens the chamber door of the vacuum welding case, takes out sodium-sulphur battery
Cathode.
Inert gas includes nitrogen, argon gas, helium etc..
Liquid metal sodium is first injected sodium by a kind of packaging method of cathode of sodium-sulfur cell of the invention under vacuum conditions
Part, and full of the reaction chamber in the note sodium part between electrolyte ceramics pipe 1 and bursting tube 2, remaining liquid metal
Sodium is filled in bursting tube 2, and such operation can effectively ensure that the consistency of metallic sodium Yu 1 contact area of electrolyte ceramics pipe,
It can effectively ensure that the consistency of sodium-sulphur battery performance,
Note sodium part is put into vacuum laser welding case after liquid metal sodium cooled and solidified, by first to vacuum welding case
It is evacuated to 10Pa, is supplemented making property gas the air pressure in the vacuum welding case to be no more than 2 × 104Pa, under this negative pressure
Laser welding is carried out to negative lug 9 and cathode sealing cover 8, to realize reliable effective encapsulation of cathode of sodium-sulfur cell.In this way
It can guarantee sodium-sulphur battery in running temperature, the pressure inside cathode of sodium-sulfur cell is still negative pressure, guarantees cathode of sodium-sulfur cell
The consistency of internal pressure, thus effectively prevent sodium-sulphur battery by thermal stress package failure.It can guarantee sodium-sulphur battery product
The consistency of performance extends the service life of sodium-sulphur battery.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as the change in spirit of the invention, to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (8)
1. a kind of packaging method of cathode of sodium-sulfur cell, for that will include electrolyte ceramics pipe, bursting tube and cathode sealing cover
Sodium part and negative lug are infused, is sealed, including the following steps:
Note sodium step: under vacuum conditions injecting liquid metal sodium in the note sodium part, and by gas pressure, keeps liquid golden
Belong to sodium full of the reaction chamber between the bursting tube and the electrolyte ceramics pipe；
Fixing step by welding: the welding fixture in the note sodium part and the negative lug, with vacuum welding case is fixed；
Vacuum step: the air pressure in the vacuum welding case is first evacuated to 10Pa hereinafter, again to the vacuum welding case
Interior topping up makes the air pressure in the vacuum welding case be no more than 2 × 104Pa；
Welding step: it is bonded the bottom surface of the negative lug with the coaxial stress in top surface of the cathode sealing cover, along described
Annular gap between negative lug and the cathode sealing cover excircle carries out laser welding, by the negative lug with it is described
Cathode sealing cover is fixed, and cathode of sodium-sulfur cell is formed；
Blowdown step: letting out vacuum to the vacuum welding case, opens the chamber door of the vacuum welding case, and it is negative to take out sodium-sulphur battery
Pole.
2. a kind of packaging method of cathode of sodium-sulfur cell according to claim 1, it is characterised in that: the note sodium step
In, the note sodium needle in centre bore of the liquid metal sodium by being plugged on cathode sealing cover center injects the note sodium part.
3. a kind of packaging method of cathode of sodium-sulfur cell according to claim 1, it is characterised in that: the note sodium step
In, remaining liquid metal sodium is filled in the bursting tube.
4. a kind of packaging method of cathode of sodium-sulfur cell according to claim 1, it is characterised in that: the note sodium step
In, liquid metal sodium is cooled down in the atmosphere of inert gas.
5. a kind of packaging method of cathode of sodium-sulfur cell according to claim 1, it is characterised in that: described that step is welded and fixed
In rapid, the note sodium part is fixed in the lower fixture of the welding fixture, the negative lug by the welding fixture upper folder
Head clamping.
6. a kind of packaging method of cathode of sodium-sulfur cell according to claim 1, it is characterised in that: the welding step
In, the air pressure in the vacuum welding case is kept constant.
7. a kind of packaging method of cathode of sodium-sulfur cell according to claim 6, it is characterised in that: the welding step
In, by the pumping of the vacuum pump of progress simultaneously and the inflation of inert gas front pump, to keep in the vacuum welding case
Air pressure it is constant.
8. a kind of packaging method of cathode of sodium-sulfur cell according to claim 7, it is characterised in that: welding step terminates,
The vacuum pump and the inert gas front pump close synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611191759.8A CN106785104B (en) | 2016-12-21 | 2016-12-21 | A kind of packaging method of cathode of sodium-sulfur cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611191759.8A CN106785104B (en) | 2016-12-21 | 2016-12-21 | A kind of packaging method of cathode of sodium-sulfur cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106785104A CN106785104A (en) | 2017-05-31 |
| CN106785104B true CN106785104B (en) | 2019-03-08 |
Family
ID=58897023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611191759.8A Active CN106785104B (en) | 2016-12-21 | 2016-12-21 | A kind of packaging method of cathode of sodium-sulfur cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106785104B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740339B (en) * | 2020-08-04 | 2022-02-11 | 南阳市鑫特电气有限公司 | Gas insulation type switch cabinet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3660063A (en) * | 1969-03-27 | 1972-05-02 | Gen Electric | Method of forming sealed container for elemental sodium |
| JPH113727A (en) * | 1997-06-10 | 1999-01-06 | Hitachi Ltd | Sealing device for sodium-sulfur battery in reduced pressure and its manufacture |
| CN103117416A (en) * | 2012-12-12 | 2013-05-22 | 上海电气钠硫储能技术有限公司 | Sodium injection method for negative electrode of sodium-sulphur battery |
| CN103123983A (en) * | 2012-12-12 | 2013-05-29 | 上海电气钠硫储能技术有限公司 | High-vacuum packaging method of sodium-sulfur battery |
| CN103490101A (en) * | 2013-10-17 | 2014-01-01 | 上海电气钠硫储能技术有限公司 | Method for injecting sodium into positive electrode of sodium-sulfur battery |
-
2016
- 2016-12-21 CN CN201611191759.8A patent/CN106785104B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3660063A (en) * | 1969-03-27 | 1972-05-02 | Gen Electric | Method of forming sealed container for elemental sodium |
| JPH113727A (en) * | 1997-06-10 | 1999-01-06 | Hitachi Ltd | Sealing device for sodium-sulfur battery in reduced pressure and its manufacture |
| CN103117416A (en) * | 2012-12-12 | 2013-05-22 | 上海电气钠硫储能技术有限公司 | Sodium injection method for negative electrode of sodium-sulphur battery |
| CN103123983A (en) * | 2012-12-12 | 2013-05-29 | 上海电气钠硫储能技术有限公司 | High-vacuum packaging method of sodium-sulfur battery |
| CN103490101A (en) * | 2013-10-17 | 2014-01-01 | 上海电气钠硫储能技术有限公司 | Method for injecting sodium into positive electrode of sodium-sulfur battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106785104A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9831531B2 (en) | Method of manufacturing battery | |
| CN103137343B (en) | A kind of cylinder battery capacitor | |
| CN104143662B (en) | A kind of square box hat or lithium ion battery with aluminum shell chemical conversion new method | |
| CN106571442A (en) | Liquid injection device and liquid injection method of polymer lithium battery electrolyte | |
| CN106972122B (en) | A kind of elevated-temperature seal electrode and preparation method thereof | |
| CN106784450A (en) | A kind of sealed cover plate structure of lithium battery and preparation method thereof | |
| CN107394283A (en) | A kind of Compact type liquid metal battery and its assembly method | |
| CN106785104B (en) | A kind of packaging method of cathode of sodium-sulfur cell | |
| CN102569872A (en) | Lithium ion battery and manufacturing method thereof | |
| CN102040186B (en) | High vacuum ceramic LCC packaging method | |
| CN107394067B (en) | Parallel structure sealing electrode and assembling method thereof | |
| CN107749351A (en) | Hermetically sealed ultracapacitor and its manufacture method | |
| CN207425642U (en) | Hermetically sealed ultracapacitor | |
| CN203415649U (en) | Electrode terminal, cover plate component, and battery containing cover plate component | |
| CN208189650U (en) | Secondary cell cap assembly and secondary cell | |
| CN106711518B (en) | A kind of packaging method of positive electrode of sodium-sulfur cell | |
| CN202996925U (en) | Negative sealing current collecting structure of sodium-sulfur battery | |
| CN206727163U (en) | A kind of Compound Negative pole pipe for battery | |
| CN111883849A (en) | Drying method of soft package lithium ion battery cell | |
| CN109411826A (en) | Formation of Li-ion batteries technique | |
| CN101630621B (en) | Magnetron tube core without exhaust tube | |
| CN201478251U (en) | Suction tube-free magnetic control tube core | |
| JP2020161395A (en) | Flat battery and manufacturing method therefor | |
| CN108711639A (en) | A kind of mouth-sealing method of lithium ion battery | |
| CN110707365A (en) | Lithium ion battery liquid injection method and lithium ion battery |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200911 Address after: Room 1201, no.1346 Gonghe Xin Road, Jing'an District, Shanghai 200070 Patentee after: Shanghai Electric Enterprise Development Co., Ltd Address before: 201815 Shanghai Jiading District City Jia Zhu Road No. 1997 Patentee before: SHANGHAI ELECTRIC SODIUM SULFUR ENERGY STORAGE TECHNOLOGY Co.,Ltd. |