CN106785104A - A kind of method for packing of cathode of sodium-sulfur cell - Google Patents
A kind of method for packing of cathode of sodium-sulfur cell Download PDFInfo
- Publication number
- CN106785104A CN106785104A CN201611191759.8A CN201611191759A CN106785104A CN 106785104 A CN106785104 A CN 106785104A CN 201611191759 A CN201611191759 A CN 201611191759A CN 106785104 A CN106785104 A CN 106785104A
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- China
- Prior art keywords
- sodium
- cathode
- vacuum
- sulfur cell
- note
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- 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.)
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Classifications
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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
- H01M10/36—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
Abstract
The invention discloses a kind of method for packing of cathode of sodium-sulfur cell, note sodium part and negative lug for will include electrolyte ceramicses pipe, bursting tube and negative pole closure are sealed, comprised the following steps：Note sodium step：Liquid metal sodium is injected in note sodium part under vacuum, and by gas pressure, makes liquid metal sodium full of the reaction chamber being located between bursting tube and electrolyte ceramicses pipe；Fixing step by welding：The weld jig that will be noted in sodium part and negative lug, with vacuum welding case is fixed；Vacuum step：The air pressure in vacuum welding case is first evacuated to below 10Pa, then to topping up in vacuum welding case, the air pressure in vacuum welding case is no more than 2 × 104Pa；Welding step：The bottom surface of negative lug is fitted with the coaxial stress of the top surface of negative pole closure, the annular gap between negative lug and negative pole closure excircle carries out laser welding, and negative lug is fixed with negative pole closure, 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 method for packing of cathode of sodium-sulfur cell.
Background technology
Sodium-sulphur battery is a kind of with sulphur as positive active material, and metallic sodium is negative electrode active material, with β, and "-aluminum oxide is electric
Solution matter earthenware is the energy-storage battery of electrolyte membrance.Under 300~330 DEG C of operating temperatures, sodium ion is through electricity for sodium-sulphur battery
There is reversible reaction between solution matter barrier film and sulphur, form the release and storage of energy.As the metallic sodium of negative active core-shell material,
Due to severe corrosive, and easily there is burning and even explode, therefore, it is necessary to effectively improve as far as possible in sodium-sulphur battery
The utilization rate of metallic sodium.In the sodium-sulphur battery of China's early development, increased by capillarity in electrolyte ceramicses pipe
The contact area of metallic sodium and electrolyte ceramicses pipe internal surface, and carrying out using the inert atmosphere in glove box when oral area is encapsulated
Encapsulated under environment, be pressure-fired during encapsulation.
The utilization ratio of sodium in sodium-sulphur battery is improved by capillarity, it is difficult to ensure the uniformity of sodium-sulphur battery performance.
Additionally, packaging technology requirement cathode of sodium-sulfur cell is pressure-fired under cold conditions, i.e. normal temperature, it is warm when operation is in sodium-sulphur battery
Under degree, up to about 2 standard atmospheric pressures, sodium-sulphur battery runs pressure under air pressure higher for a long time, cathode of sodium-sulfur cell it is each
Sealing-in position can produce stress, substantially reduce the life-span of sodium-sulphur battery.
The content of the invention
The invention aims to overcome the deficiencies in the prior art, there is provided a kind of method for packing of cathode of sodium-sulfur cell,
Its uniformity that may insure sodium-sulphur battery properties of product, extends the service life of sodium-sulphur battery.
Realizing a kind of technical scheme of above-mentioned purpose is：A kind of method for packing of cathode of sodium-sulfur cell, for will including electricity
The note sodium part and negative lug of solution matter earthenware, bursting tube and negative pole closure, seal, and comprise the following steps：
Note sodium step：Liquid metal sodium is injected in the note sodium part under vacuum, and by capillarity, makes liquid
State metallic sodium is full of the reaction chamber being located between the bursting tube and the electrolyte ceramicses pipe；
Fixing step by welding：Weld jig in the note sodium part and the negative lug, with vacuum welding case is consolidated
It is fixed；
Vacuum step：The air pressure in the vacuum welding case is first evacuated to below 10Pa, then 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：The bottom surface of the negative lug is set to be fitted with the coaxial stress of top surface of the negative pole closure, along
Annular gap between the negative lug and the negative pole closure excircle carries out laser welding, by the negative lug with
The negative pole closure is fixed, and forms cathode of sodium-sulfur cell；
Blowdown step：Vacuum is let out to the vacuum welding case, the chamber door of the vacuum welding case is opened, sodium-sulphur battery is taken out
Negative pole.
Further, in the note sodium step, liquid metal sodium is by being plugged on the center at the negative pole closure center
Note sodium pin 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 clamp of the weld jig, institute
Negative lug is stated to be clamped by the upper grip of the weld jig.
Further, in the welding step, the air pressure in the vacuum welding case keeps constant.
Further, in the welding step, it is input into by the pumping and inert gas of the vavuum pump for carrying out simultaneously
The inflation of pump keeps the constant of the air pressure in the vacuum welding case.
Further, welding step terminates, the vavuum pump and the inert gas front pump close synchronously.
A kind of technical scheme of the method for packing of cathode of sodium-sulfur cell of the invention is employed, for that will be made pottery including electrolyte
The note sodium part and negative lug of porcelain tube, bursting tube and negative pole closure, seal, and comprise the following steps：Note sodium step：
Liquid metal sodium is injected in the note sodium part under vacuum condition, and by capillarity, makes liquid metal sodium full of positioned at institute
State the reaction chamber between bursting tube and the electrolyte ceramicses pipe；Fixing step by welding：By the note sodium part and described negative
Weld jig in pole lug, with vacuum welding case is fixed；Vacuum step：First the air pressure in the vacuum welding case is taken out very
Sky is to below 10Pa, then, the air pressure in the vacuum welding case is not surpassed to topping up in the vacuum welding case extremely
Cross 2 × 104Pa；Welding step：The bottom surface of the negative lug is set to be fitted with the coaxial stress of top surface of the negative pole closure, edge
The annular gap between the negative lug and the negative pole closure excircle carries out laser welding, by the negative lug
Fixed with the negative pole closure, form cathode of sodium-sulfur cell；Blowdown step：Vacuum is let out to the vacuum welding case, institute is opened
The chamber door of vacuum welding case is stated, cathode of sodium-sulfur cell is taken out.It has the technical effect that：One is in can effectively ensure that cathode of sodium-sulfur cell
The uniformity of metallic sodium and electrolyte ceramicses pipe contact area, two can be to ensure sodium-sulphur battery in running temperature, and sodium sulphur is electric
Pressure inside the negative pole of pond is still negative pressure, it is ensured that the uniformity of cathode of sodium-sulfur cell internal pressure, so as to effectively prevent sodium sulphur
Battery package failure by thermal stress, it is ensured that the uniformity of sodium-sulphur battery properties of product, extends the use of sodium-sulphur battery
Life-span.
Brief description of the drawings
Fig. 1 is the structural representation for noting sodium part.
Fig. 2 be a kind of cathode of sodium-sulfur cell of the invention method for packing in note sodium step operation chart.
Fig. 3 be a kind of cathode of sodium-sulfur cell of the invention method for packing in welding step operation chart.
Fig. 4 is the structural representation of cathode of sodium-sulfur cell after the completion of encapsulation.
Specific embodiment
Fig. 1 is referred to, the present inventor is led to below in order to be able to preferably understand technical scheme
Specifically embodiment is crossed, and is described in detail with reference to accompanying drawing：
Cathode of sodium-sulfur cell includes note sodium part and negative lug 9.The note sodium part includes electrolyte ceramicses pipe 1 and coaxial sleeve
It is connected on the bursting tube 2 of the radially inner side of electrolyte ceramicses pipe 1.The top of electrolyte ceramicses pipe 1 is openend, is sealed with ceramic insulation
Ring 3.Closed by negative pole closure 8 at the top of bursting tube 2.The radial center of negative pole closure 8 is provided with the center for noting sodium
Hole 81.Connected by negative pole sealing ring 5 between the top surface of ceramic insulation ring 3 and the excircle of negative pole closure 8.Negative pole sealing ring
5 close the reaction chamber between electrolyte ceramicses pipe 1 and the radial direction of bursting tube 2.Bottom surface and excircle along ceramic insulation ring 3
Face, sealing-in positive pole sealing ring 4.Be stored with liquid metal sodium in bursting tube 2 and the reaction chamber, wherein the reaction chamber
In liquid metal sodium can pass through electrolyte ceramicses pipe 1, the liquid-state sulfur with positive pole reacts.The bottom of bursting tube 2 is provided with
The bottom through-hole 21 that bursting tube 2 can be connected with the reaction chamber.
A kind of method for packing of cathode of sodium-sulfur cell of the invention, comprises 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, by note sodium pin 10
In the centre bore 81 of insertion negative pole closure 8, liquid metal sodium injects bursting tube 2 from centre bore 81, and by the bottom of bursting tube 2
Small hole at bottom part 21, into by bursting tube 2, electrolyte ceramicses pipe 1, ceramic insulation ring 3, negative pole sealing ring 5 and negative pole closure 8
In the reaction chamber for being surrounded, and the reaction chamber is full of by gas pressure.Remaining liquid metallic sodium fills bursting tube 2
It is interior, and the air in bursting tube 2 and the reaction chamber is discharged.
To prevent the oxidation of liquid metal sodium, the atmosphere in the vacuum tank is necessary for inert atmosphere, liquid metal sodium
Must cool down in an inert atmosphere.
Fixing step by welding：After after the liquid metal sodium solidification in the reaction chamber and bursting tube 2, sodium part will be noted and born
Pole lug 9 is put into vacuum welding case together, and is fixed with weld jig.The note sodium part is consolidated by the lower clamp of the weld jig
Fixed, negative lug 9 is clamped by the upper grip of the weld jig.
Vacuum step：The chamber door of the vacuum welding case is closed, the vacuum welding case is vacuumized.
The vacuum welding case is vacuumized using vavuum pump first, by the air in bursting tube 2 from the center of negative pole closure 8
Centre bore 81 extract out, when the air pressure in the vacuum welding case is down to below 10Pa, the vavuum pump is closed, by inertia
Gas front pump is to supplement inert atmosphere in the vacuum welding case to 2 × 104Pa。
Welding step：The negative lug 9 of the upper grip clamping declines, and makes the bottom surface of negative lug 9 and negative pole closure 8
The laminating of top surface coaxial stress, the binding post 91 of negative lug 9 is located at the surface of centre bore 81, along negative lug 9 and negative
Annular gap between the excircle of pole closure 8 carries out laser welding, and negative lug 9 and negative pole closure 8 are fixed.
In laser beam welding, the pumping of the vavuum pump and the inert gas front pump topping up enter simultaneously
OK, by using the flow control valve on the vavuum pump and the inert gas front pump so that in the vacuum welding case
Air pressure 2 × 104Pa keeps constant to be terminated to welding, and laser welding is finished, and the vavuum pump and the inert gas are input into
Pump synchronization automatic closing.
Blowdown step：Vacuum is let out to the vacuum welding case, the chamber door of the vacuum welding case is opened, sodium-sulphur battery is taken out
Negative pole.
Inert gas is including nitrogen, argon gas, helium etc..
A kind of method for packing of cathode of sodium-sulfur cell of the invention, liquid metal sodium is first injected note sodium under vacuum
Part, and full of the reaction chamber being located in the note sodium part between electrolyte ceramicses pipe 1 and bursting tube 2, remaining liquid metal
Sodium is filled in bursting tube 2, and such operation can effectively ensure that the uniformity of metallic sodium and the contact area of electrolyte ceramicses pipe 1,
The uniformity of sodium-sulphur battery performance is can effectively ensure that,
After note sodium part is put into vacuum laser welding case after liquid metal sodium cooled and solidified, by first to vacuum welding case
10Pa is evacuated to, is supplemented with to property gas, the air pressure in the vacuum welding case is no more than 2 × 104Pa, under this negative pressure
Laser welding is carried out to negative lug 9 and negative pole closure 8, so as to realize the reliable effectively encapsulation of cathode of sodium-sulfur cell.So
Sodium-sulphur battery can be ensured in running temperature, the pressure inside cathode of sodium-sulfur cell is still negative pressure, it is ensured that cathode of sodium-sulfur cell
The uniformity of internal pressure, so as to effectively prevent sodium-sulphur battery by thermal stress and package failure.Sodium-sulphur battery product can be ensured
The uniformity of performance, extends the service life of sodium-sulphur battery.
Those of ordinary skill in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention,
And be not used as being limitation of the invention, as long as in spirit of the invention, the change to embodiment described above
Change, modification will all fall in the range of claims of the present invention.
Claims (8)
1. a kind of method for packing of cathode of sodium-sulfur cell, for electrolyte ceramicses pipe, bursting tube and negative pole closure will to be included
Note sodium part and negative lug, seal, and comprise the following steps：
Note sodium step：Liquid metal sodium is injected in the note sodium part under vacuum, and by gas pressure, makes liquid gold
Category sodium is full of the reaction chamber being located between the bursting tube and the electrolyte ceramicses pipe；
Fixing step by welding：Weld jig 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 below 10Pa, then 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：The bottom surface of the negative lug is set to be fitted with the coaxial stress of top surface of the negative pole closure, along described
Annular gap between negative lug and the negative pole closure excircle carries out laser welding, by the negative lug with it is described
Negative pole closure is fixed, and forms cathode of sodium-sulfur cell；
Blowdown step：Vacuum is let out to the vacuum welding case, the chamber door of the vacuum welding case is opened, sodium-sulphur battery is taken out and is born
Pole.
2. the method for packing of a kind of cathode of sodium-sulfur cell according to claim 1, it is characterised in that：The note sodium step
In, liquid metal sodium injects the note sodium part by the note sodium pin being plugged in the centre bore at the negative pole closure center.
3. the method for packing of a kind 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. the method for packing of a kind 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. the method for packing of a kind of cathode of sodium-sulfur cell according to claim 1, it is characterised in that：It is described to be welded and fixed step
In rapid, the note sodium part is fixed in the lower clamp of the weld jig, the negative lug by the weld jig upper folder
Head clamping.
6. the method for packing of a kind 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 keeps constant.
7. the method for packing of a kind of cathode of sodium-sulfur cell according to claim 6, it is characterised in that：The welding step
In, kept in the vacuum welding case by the pumping of vavuum pump that carries out simultaneously and the inflation of inert gas front pump
Air pressure it is constant.
8. the method for packing of a kind of cathode of sodium-sulfur cell according to claim 8, it is characterised in that：Welding step terminates,
The vavuum 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 |
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| 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 |
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| CN106785104A true CN106785104A (en) | 2017-05-31 |
| CN106785104B CN106785104B (en) | 2019-03-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740339A (en) * | 2020-08-04 | 2020-10-02 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740339A (en) * | 2020-08-04 | 2020-10-02 | 南阳市鑫特电气有限公司 | Gas insulation type switch cabinet |
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| CN106785104B (en) | 2019-03-08 |
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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. |