CN202996925U - Negative sealing current collecting structure of sodium-sulfur battery - Google Patents
Negative sealing current collecting structure of sodium-sulfur battery Download PDFInfo
- Publication number
- CN202996925U CN202996925U CN201220687018XU CN201220687018U CN202996925U CN 202996925 U CN202996925 U CN 202996925U CN 201220687018X U CN201220687018X U CN 201220687018XU CN 201220687018 U CN201220687018 U CN 201220687018U CN 202996925 U CN202996925 U CN 202996925U
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- sodium
- sealed cover
- metallic sealed
- face
- sulphur battery
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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
- 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
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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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Abstract
The utility model discloses a negative sealing current collecting structure of a sodium-sulfur battery, and belongs to the field of energy storage. The structure comprises a sodium storing tube, a metal seal cover and a ceramic insulating ring, wherein the metal seal cover seals the sodium storing tube, and an upper metal ring is arranged on the circumference of the bottom surface of the metal seal cover; and a radial flange is arranged on the bottom of the upper metal ring, and the ceramic insulating ring is fixed on the bottom surface of the radial flange. The structure has the technical effects that the compressive stress suffered by the ceramic insulating ring is effectively transmitted onto the radial flange, so that the ceramic insulating ring is prevented from being damaged because of the compressive stress.
Description
Technical field
The utility model relates to a kind of sodium-sulphur battery negative pole sealing afflux structure in energy storage field.
Background technology
The structure of existing sodium-sulphur battery is that the center of sodium-sulphur battery arranges storage sodium pipe 7, storage sodium pipe 7 outer socket ceramic electrolyte pipes 8, the outer structure that is socketed again metal shell 9 of ceramic electrolyte pipe 8, gap between ceramic electrolyte pipe 8 and storage sodium pipe 7 is the cathode chamber R1 of sodium-sulphur battery, forms the R2 of anode chamber that contains elemental sulfur or sodium polysulfide between ceramic electrolyte pipe 8 and metal shell 9.The top of the R2 of anode chamber seals by lower becket 10, and fixes by Laser Welding between lower becket 10 and metal shell 9.Thereby lower becket 10 is the anodal hermetically-sealed construction of sodium-sulphur battery.
In order with the negative pole sealing of sodium-sulphur battery, to have designed sodium-sulphur battery negative pole sealing afflux structure in sodium-sulphur battery.Sodium-sulphur battery negative pole sealing afflux structure comprises: ceramic insulation ring 1, upper becket 2, metallic sealed cover 3 and storage sodium pipe 7.Metallic sealed cover 3 will store up the top seal of sodium pipe 7, and upper becket 2 is around the circumference setting of metallic sealed cover 3 bottom surfaces, and ceramic insulation ring 1 is fixed on the bottom surface of upper becket 2 by thermocompression bonding; Ceramic insulation ring 1 connects with lateral wall and the end face of ceramic electrolyte pipe 8 by glass capsulation and fixes, and the underrun thermocompression bonding of ceramic insulation ring 1 and the end face of lower becket 10 are fixed.The defective of design is like this: the thermal coefficient of expansion of ceramic insulation ring 1 and upper becket 2, lower becket 10 there are differences, after upper becket 2 and lower becket 10 expand, ceramic insulation ring 1 is subject to the compression from upper becket 2 and lower becket 10, serious caused ceramic insulation ring 1 breaks, and cathode chamber R1 and the R2 of anode chamber of sodium-sulphur battery no longer insulate.
Simultaneously, the storage sodium pipe 7 of existing sodium-sulphur battery adopts stainless steel, and the top of metallic sealed cover 3 only has a negative lug 11.At the discharge initial stage, because the liquid level of storage sodium pipe 7 interior Liquid Sodium is high, wetted area to storage sodium pipe 7 inwalls is large, the ohmage of sodium-sulphur battery is less, but easily causes the corrosion of negative lug, along with the increase of depth of discharge, storage sodium pipe 7 interior Liquid Sodium liquid levels descend, Liquid Sodium descends to the wetted area of storage sodium pipe 7, and the ohmage of sodium-sulphur battery presents linear increasing, and reduces the battery charging and discharging performance.
The utility model content
The purpose of this utility model is in order to overcome the deficiencies in the prior art, and a kind of sodium-sulphur battery negative pole sealing afflux structure is provided, and it can effectively transmit the suffered compression of ceramic insulation ring, prevents that the ceramic insulation ring from damaging because of compression
A kind of technical scheme that realizes above-mentioned purpose is: a kind of sodium-sulphur battery negative pole sealing afflux structure, comprise storage sodium pipe, metallic sealed cover and ceramic insulation ring, described metallic sealed cover is described storage sodium duct occlusion, and the circumference of described metallic sealed cover bottom surface is provided with becket; :
The bottom of described upper becket arranges radial flange, and described ceramic insulation ring is fixed on the bottom surface of described radial flange.
Further, the center of described metallic sealed cover is plugged with the metal bar that stretches in described storage sodium pipe; Described metal bar is provided with open top, the end face of described open-topped end face and described metallic sealed cover is contour and fixing, this open-topped bottom is provided with radial direction through hole, is inserted with pin in described open top, the end face seal welding of this pin and described metallic sealed cover.
Further, the bottom surface of described metallic sealed cover is provided with annular boss, and described annular boss is positioned at the radially inner side of described upper becket, and described annular boss is fixed with the lateral wall of described upper becket and described storage sodium pipe respectively by Laser Welding.
Further, the underrun thermocompression bonding of described ceramic insulation ring and described radial flange is fixed.
Further, between the open-topped end face of described metal bar and the end face of described metallic sealed cover, by being welded and fixed, and the open-topped end face of metal bar and the end face of described metallic sealed cover are equipped with galvanizing coating.
Adopted the technical scheme of a kind of sodium-sulphur battery negative pole sealing afflux structure of the present utility model, namely in the bottom of upper becket, radial flange has been set, the ceramic insulation ring is fixed on the technical scheme on the bottom surface of described radial flange.Its technique effect is: can be effectively that the ceramic insulation ring is suffered compression is delivered on described radial flange, prevents that the ceramic insulation ring from damaging because of compression.
Description of drawings
Fig. 1 is the scheme of installation of the sodium-sulphur battery negative pole sealing afflux structure of prior art.
Fig. 2 is a kind of sodium-sulphur battery negative pole sealing afflux structure schematic diagram of the present utility model.
Embodiment
See also Fig. 2, inventor of the present utility model be in order to understand the technical solution of the utility model better, below by embodiment particularly, and is described in detail by reference to the accompanying drawings:
See also Fig. 2, a kind of sodium-sulphur battery negative pole sealing afflux structure of the present utility model comprises ceramic insulation ring 1, upper becket 2, metallic sealed cover 3 and storage sodium pipe 7.
Be fixed with becket 2 on the circumference of the bottom surface of metallic sealed cover 3, the bottom of upper becket 2 is provided with a radial flange 21, this radial flange is fixed with ceramic insulation ring 1 on 21 bottom surfaces, this ceramic insulation ring 1 is fixed by glass capsulation with lateral wall and the end face of the ceramic insulating tube of sodium-sulphur battery, and the lower becket of the bottom surface of this ceramic insulation ring 1 and sodium-sulphur battery is fixed.
The purpose of design is like this: by in the bottom at upper becket 2, radial flange 21 being set, fixing ceramic insulation ring 1 on the bottom surface of radial flange 21, when sodium-sulphur battery is worked, the compression that ceramic insulation ring 1 is subject to will be transferred on radial flange 21, prevent that ceramic insulation ring 1 from damaging because compression is excessive.
In the present embodiment, cover ceramic insulation ring 1 is made by alpha-aluminium oxide, adopts the reason of alpha-aluminium oxide to be that alpha-aluminium oxide to the sodium ion inconductivity, plays the effect of effective insulation.On the one hand, alpha-aluminium oxide modulus and compression strength are all very high in addition, can guarantee that a kind of sodium-sulphur battery negative pole sealing afflux structure of the present utility model carries out effective sealing to the negative pole of sodium-sulphur battery.
In the present embodiment, ceramic insulation ring 1 is fixed together by thermocompression bonding and upper becket 2, and this is welding manner common between metal and pottery.Preferably, ceramic insulation ring 1 selects the alusil alloy of low melting point to be used as solder layer 22 when carrying out thermocompression bonding between thermocompression bonding and lower becket 2.The aluminium silicon alloy is because the element silicon in alusil alloy has good wettability to alpha-aluminium oxide, can improve like this bond strength between lower becket 2 and ceramic insulation ring 1, in the present embodiment, the bond strength between lower becket 2 and ceramic insulation ring 1 is between 1.5MPa to 2.5MPa.
In the present embodiment, upper becket 2 adopts 316 austenitic stainless steels with good sulfur corrosion resistant, same 316 austenitic stainless steels with good sulfur corrosion resistant that adopt of metallic sealed cover 3, storage sodium pipe 7 adopts the austenitic stainless steel with superior weldability energy, preferably select 304L type austenitic stainless steel, be convenient to like this becket 2, metallic sealed cover 3 and storage sodium pipe 7 by welding, particularly Laser Welding is fixed.
In the present embodiment, the height h of radial flange 21 is preferably 2 to 15 times of metallic sealed cover 3 thickness d, and it is best that at this moment radial flange 21 bears the effect of the compression that ceramic insulation ring 1 shifts.
Metal bar 5 arranges open top, this open-topped end face, and namely the end face of the end face of metal bar 5 and metallic sealed cover 3 is contour, this open-topped bottom arranges radial direction through hole 6, be convenient to Liquid Sodium from the open top inflow of metal bar 5, and flow out from radial direction through hole 6, enter storage sodium pipe 7.Because the fusing point of metallic sealed cover 3 and metal bar 5 differs larger; the fusing point of metal bar is about 660 ℃; the fusing point of metallic sealed cover 3 is about 1400-1500 ℃; for metallic sealed cover 3 and metal bar 5 being welded; the end face with metallic sealed cover 3 of the end face of metal bar 5 is equipped with galvanizing coating, and the end face of metal bar 5 like this and end face metallic sealed cover 3 are fixed together by inert gas tungsten electrode protection weldering (TIG weldering).
The Lower Half 41 of pin 4 is inserted in the open top of metal bars 5, the bottom surface of pin 4 first halves 42 and the end face seal welding of metallic sealed cover 3, thus make the first half 42 of pin 4 play the effect of the negative lug of sodium-sulphur battery.In the present embodiment, the bottom surface of pin 4 first halves 42 is by the end face seal welding of laser welding and metallic sealed cover 3.
For bottom surface and metallic sealed cover 3 end faces of pin 4 first halves 42 being welded together by Laser Welding, in the present embodiment, pin 4 adopts 316 type stainless steels.
In the present embodiment, stretch into the metal bar 5 in storage sodium pipe 7 by pegging graft at the center of metallic sealed cover 3, and metallic sealed cover 3, metal bar 5 and pin 4 are connected as a single entity by welding, can increase like this storage sodium pipe 7 interior Liquid Sodium to the wetted area of whole sodium-sulphur battery negative pole sealing afflux structure, solved so the mordant technical problem of Liquid Sodium anticathode lug, simultaneously in the sodium-sulphur battery discharge later stage, prevent existing linear the increasing of sodium-sulphur battery ohmage, improved the charge-discharge performance of battery.
For sodium-sulphur battery being connected, the screw thread of M8 is set on the excircle of pin 4 first halves 42.
In the present embodiment, the installation method of pin 4 is, the storage sodium pipe 7 that metallic sealed cover 3 has been installed is placed in electric furnace to be heated, programming rate is controlled at 8 ℃/min, when the temperature of storing up sodium pipe 7 reaches 120-150 ℃, suspend heating, slowly add Liquid Sodium from the open top of metal bar 5 to storage sodium pipe 7, this process control is within 5 minutes, and is cooling with stove subsequently.The open top of at last Lower Half 41 of pin 4 being inserted metal bar 5 is with the bottom surface of pin 4 first halves 42 and the end face seal welding of metallic sealed cover 3.
Embodiment 3
Embodiment 3 is the further improvement to embodiment 1 and embodiment 2.In the present embodiment, annular boss 31 is set on the bottom surface of metallic sealed cover 3, annular boss 31 is positioned at the radially inner side of becket 2, and this annular boss 31 is fixing respectively with lateral wall and the upper becket 2 of storage sodium pipe 7 by welding.The purpose of design is like this: can guarantee between metallic sealed cover 3 and storage sodium pipe 7, between metallic sealed cover 3 and upper becket 2, when weld strength, the required time is welded in shortening.The welding procedure that adopts in the present embodiment is Laser Welding, in order to obtain better welding effect, when storage sodium pipe 7 and annular boss 31 carry out Laser Welding, adopts argon gas to protect.The time that Laser Welding continues is 10s, and the degree of depth of Laser Welding is 1.2～1.5mm, can guarantee that like this bond strength between annular boss 31 and storage sodium pipe 7 is not less than storage sodium pipe 7 or metallic sealed cover 3 any one tensile strength in both.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the utility model, and be not to be used as restriction of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (5)
1. a sodium-sulphur battery negative pole seals afflux structure, comprise storage sodium pipe (7), metallic sealed cover (3) and ceramic insulation ring (1), described metallic sealed cover (3) is described storage sodium pipe (7) sealing, and the circumference of described metallic sealed cover (3) bottom surface is provided with becket (2); It is characterized in that:
The bottom of described upper becket (2) arranges radial flange (21), and described ceramic insulation ring (1) is fixed on the bottom surface of described radial flange (21).
2. a kind of sodium-sulphur battery negative pole according to claim 1 seals afflux structure, it is characterized in that:
The center of described metallic sealed cover (3) is plugged with the metal bar (5) that stretches in described storage sodium pipe (7); Described metal bar (5) is provided with open top, the end face of described open-topped end face and described metallic sealed cover (3) is contour and fixing, this open-topped bottom is provided with radial direction through hole (6), be inserted with pin (4) in described open top, the end face seal welding of this pin (4) and described metallic sealed cover (3).
3. a kind of sodium-sulphur battery negative pole according to claim 1 and 2 seals afflux structure, it is characterized in that: the bottom surface of described metallic sealed cover (3) is provided with annular boss (31), described annular boss (31) is positioned at the radially inner side of described upper becket (2), described annular boss (31) is fixed with the lateral wall of described upper becket (2) and described storage sodium pipe (7) respectively by Laser Welding.
4. a kind of sodium-sulphur battery negative pole according to claim 1 and 2 seals afflux structure, and it is characterized in that: the underrun thermocompression bonding of described ceramic insulation ring (1) and described radial flange (21) is fixed.
5. a kind of sodium-sulphur battery negative pole according to claim 2 seals afflux structure, it is characterized in that: between the end face of the open-topped end face of described metal bar (5) and described metallic sealed cover (3), by being welded and fixed, and the end face of the open-topped end face of metal bar (5) and described metallic sealed cover (3) is equipped with galvanizing coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220687018XU CN202996925U (en) | 2012-12-12 | 2012-12-12 | Negative sealing current collecting structure of sodium-sulfur battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220687018XU CN202996925U (en) | 2012-12-12 | 2012-12-12 | Negative sealing current collecting structure of sodium-sulfur battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202996925U true CN202996925U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220687018XU Expired - Lifetime CN202996925U (en) | 2012-12-12 | 2012-12-12 | Negative sealing current collecting structure of sodium-sulfur battery |
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| Country | Link |
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| CN (1) | CN202996925U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123990A (en) * | 2012-12-12 | 2013-05-29 | 上海电气钠硫储能技术有限公司 | Negative electrode sealing collector structure of sodium-sulfur battery |
| CN103500856A (en) * | 2013-10-17 | 2014-01-08 | 上海电气钠硫储能技术有限公司 | Sodium-sulfur cell |
-
2012
- 2012-12-12 CN CN201220687018XU patent/CN202996925U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123990A (en) * | 2012-12-12 | 2013-05-29 | 上海电气钠硫储能技术有限公司 | Negative electrode sealing collector structure of sodium-sulfur battery |
| CN103123990B (en) * | 2012-12-12 | 2015-05-13 | 上海电气钠硫储能技术有限公司 | Negative electrode sealing collector structure of sodium-sulfur battery |
| CN103500856A (en) * | 2013-10-17 | 2014-01-08 | 上海电气钠硫储能技术有限公司 | Sodium-sulfur cell |
| CN103500856B (en) * | 2013-10-17 | 2015-10-28 | 上海电气钠硫储能技术有限公司 | A kind of sodium-sulphur battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200909 Address after: 200437 No. 171, Handan Road, Shanghai, Hongkou District Patentee after: EAST CHINA ELECTRIC POWER TEST AND RESEARCH INSTITUTE 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. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |