CN203491355U - Sodium-sulfur battery - Google Patents
Sodium-sulfur battery Download PDFInfo
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- CN203491355U CN203491355U CN201320639975.XU CN201320639975U CN203491355U CN 203491355 U CN203491355 U CN 203491355U CN 201320639975 U CN201320639975 U CN 201320639975U CN 203491355 U CN203491355 U CN 203491355U
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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 sodium-sulfur battery in the field of chemical energy storage. The sodium-sulfur battery comprises a shell and an electrolyte ceramic tube sleeved in the shell, wherein anode chambers are radially formed between the shell and the electrolyte ceramic tube; cathode chambers are formed in the radial inner sides of the electrolyte ceramic tube; porous conductive fiber felts are filled in the anode chambers; ceramic insulating rings radially protruding outwards are arranged on the top surface of the electrolyte ceramic tube; anode sealing devices are arranged between the ceramic insulating rings and the shell and are used for sealing the anode chambers; a sodium storage tube and a safety tube sleeved outside the sodium storage tube are arranged in the cathode chambers; the top of the sodium storage tube is sealed by a cathode sealing cover; cathode sealing rings are arranged between the ceramic insulating rings and the cathode sealing cover and are used for sealing the cathode chambers; an insulating buffer layer into which liquid sodium is not infiltrated is arranged between the bottom of the outer wall of the safety tube and the bottom of the inner wall of the electrolyte ceramic tube; an insulating bottom protective layer into which sulfur and sodium polysulfide are not infiltrated is arranged at the bottom of the outer wall of the electrolyte ceramic tube.
Description
Technical field
The utility model relates to a kind of sodium-sulphur battery in chemical energy storage field.
Background technology
As shown in Figure 1, sodium-sulphur battery comprises shell 1 and is socketed in the electrolyte ceramics pipe 4 in shell 1.Between shell 1 and electrolyte ceramics pipe 4, form cathode chamber 100, in cathode chamber 100, be filled with porous, electrically conductive fibrofelt 2.The end face of electrolyte ceramics pipe 4 is provided with radially outward outstanding ceramic insulation ring 3, by cathode chamber 100 sealings.Electrolyte ceramics pipe 4 inner sides form anode chamber 400.The bursting tube 8 that is provided with storage sodium pipe 9 in anode chamber 400 and is socketed in storage sodium pipe 9 outsides.The bottom of storage sodium pipe 9 is provided with through hole 91, and the top of storage sodium pipe 9 is by 11 sealings of negative pole seal cover.Negative pole seal cover 11 is by anode chamber 400 and 9 sealings of storage sodium pipe.
The core component of sodium-sulphur battery is electrolyte ceramics pipe 4, and electrolyte ceramics pipe 4 is by β "-Al
2o
3make, it conducts sodium ion, the double barrier film of doing.Sodium-sulphur battery cycle life depends on the capability and performance of electrolyte ceramics pipe 4 to a great extent.Once electrolyte ceramics pipe 4 has micro-crack or breaks, sodium directly contacts generation vigorous reaction with sulphur, and temperature reaches as high as 2000 ℃, and all component in instant melting sodium-sulphur battery causes active material to leak.Existing sodium-sulphur battery safety protection structure mainly adopts socket and electrolyte ceramics pipe 4 coefficients of expansion between electrolyte ceramics pipe 4 and storage sodium pipe 9 to differ larger bursting tube 8, bursting tube 8 is made by aluminum or aluminum alloy conventionally, radial clearance 401 between bursting tube 8 and electrolyte ceramics pipe 4 inwalls, the width of radial clearance 401 is controlled at 100 microns, after 4 breakages of electrolyte ceramics pipe, bursting tube 8 axial expansions are close to the inwall of electrolyte ceramics pipe 4, and give the inwall of bottom of electrolyte ceramics pipe 4 with pressure, this pressure is greater than the suffered pressure of electrolyte ceramics pipe 4 bottom outer wall, radial clearance 401 between bursting tube 8 and electrolyte ceramics pipe 4 is also along with the radial expansion of bursting tube 8 is closed, sodium cannot contact with sulphur.The perpendicularity of this means of defence to electrolyte ceramics pipe 4, and the circularity of electrolyte ceramics pipe 4 bottoms has relatively high expectations, therefore processing electrolyte ceramics pipe 4 wastes time and energy, and electrolyte ceramics pipe 4 in use very easily damages simultaneously.
Utility model content
The purpose of this utility model is in order to overcome the deficiencies in the prior art; a kind of sodium-sulphur battery is provided; its Liquid Sodium that can prevent electrolyte ceramics pipe bottom participates in reaction, in the time of protection electrolyte ceramics pipe bottom, reduces the requirement for electrolyte ceramics pipe perpendicularity and bottom circularity.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of sodium-sulphur battery, comprises shell and be socketed in the electrolyte ceramics pipe in described shell, described shell and described electrolyte ceramics caliber between form cathode chamber, described electrolyte ceramics caliber forms anode chamber to the inside, in described cathode chamber, be filled with porous, electrically conductive fibrofelt, the end face of described electrolyte ceramics pipe is provided with radially outward outstanding ceramic insulation ring, between described ceramic insulation ring and described shell, be provided with anodal sealing device, by described cathode chamber sealing, the bursting tube that is provided with storage sodium pipe in described anode chamber and is socketed in described storage sodium pipe outside, the top of described storage sodium pipe is sealed by negative pole seal cover, between described ceramic insulation ring and described negative pole seal cover, be provided with negative pole sealing ring, by described anode chamber sealing, :
Between the bottom of the bottom of described bursting tube outer wall and described electrolyte ceramics inside pipe wall, be provided with insulation and the nonwettable resilient coating of liquid towards sodium, the bottom of described electrolyte ceramics pipe outer wall be provided with insulation and to sulphur and the nonwettable bottom protective layer of sodium polysulfide.
Further, described resilient coating is any one in employing zirconia, silicon nitride, alumina powder or carbon dust, and described bottom protective layer adopts alumina silicate fibre to make.
Further, in the radial clearance between described bursting tube and described electrolyte ceramics pipe, be provided with gap-fill layer, being weaved into by metallic fiber of described gap-fill layer, and the porosity of described gap-fill layer is～%.
Further, the bottom of described storage sodium pipe is provided with through hole and filter course, and described filter course is become by 304 stainless steels or 316 stainless fibrages.
Further, the bottom of described storage sodium pipe and described bursting tube is rectangular base.
Further, the end face of described bursting tube is higher than the end face of described electrolyte ceramics pipe.
Further, in described storage sodium pipe and described cathode chamber, be all filled with protective gas.
Further, the upper space of described storage sodium pipe, and the protective gas in the upper space of described cathode chamber is nitrogen.
Further, described anodal sealing device comprises L shaped becket, flute profile becket and top metal ring;
Described L shaped becket is divided into vertical section and horizontal segment, and the bottom surface of the end face of described horizontal segment and described ceramic insulation ring is fixed, and the lateral surface of the medial surface of described vertical section and described ceramic insulation ring is fixed; The lateral surface of described vertical section is separated with the medial surface of described shell, and the end face of described vertical section is higher than the end face of described ceramic insulation ring;
The bottom surface of described flute profile becket is higher than the end face of described ceramic insulation ring, described flute profile becket is provided with inner ring cell wall and outer ring cell wall, described inner ring cell wall is higher than described outer ring cell wall, the medial surface of the lateral surface of described outer ring cell wall and the vertical section of described L shaped becket is fixed, and the end face of the end face of described outer ring cell wall and the vertical section of described L shaped becket is contour;
Described top metal ring connects the lateral surface of inner ring cell wall and the medial surface of described shell of described flute profile becket, and the end face of described top metal ring and the end face of described flute profile becket inner ring cell wall and the end face of described shell are contour; The end face of described top metal ring is upper outside a cannelure.
Adopted the technical scheme of a kind of sodium-sulphur battery of the present utility model; the sodium-sulphur battery that comprises the shell, electrolyte ceramics pipe, bursting tube and the storage sodium pipe that are socketed successively from outside to inside; between the bottom of the bottom of described bursting tube outer wall and described electrolyte ceramics inside pipe wall, be provided with insulation and the nonwettable resilient coating of liquid towards sodium, the bottom of described electrolyte ceramics pipe outer wall is provided with insulation and the technical scheme to sulphur and the nonwettable bottom protective layer of sodium polysulfide.Its technique effect is: its Liquid Sodium that can prevent electrolyte ceramics pipe bottom participates in reaction, in the time of protection electrolyte ceramics pipe bottom, reduces the requirement for electrolyte ceramics pipe perpendicularity and bottom circularity.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of sodium-sulphur battery of prior art.
Fig. 2 is the structural representation of a kind of sodium-sulphur battery of the present utility model.
Fig. 3 is the enlarged diagram of the A part of Fig. 2.
Embodiment
Refer to Fig. 2 and Fig. 3, inventor of the present utility model is 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:
Refer to Fig. 2 and Fig. 3, a kind of sodium-sulphur battery of the present utility model, comprises shell 1, electrolyte ceramics pipe 4, the bursting tube 8 of socket from outside to inside and stores up sodium pipe 9.The radially inner side of electrolyte ceramics pipe 4 is the anode chamber 400 of sodium-sulphur battery.Electrolyte ceramics pipe 4 and shell 1 are the cathode chamber 100 of sodium-sulphur battery between radially.Therefore bursting tube 8 and storage sodium pipe 9 are all positioned at anode chamber 400.The top of storage sodium pipe 9 is by the welded closure with negative pole seal cover 11.The top of storage sodium pipe 9 is Laser Welding or gas tungsten arc welding by the welding manner with negative pole seal cover 11.
In cathode chamber 100, be filled with porous, electrically conductive fibrofelt 2, in porous, electrically conductive fibrofelt 2, be filled with sulphur or sodium polysulfide.On the end face of electrolyte ceramics pipe 4, be fixed with radially outward outstanding ceramic insulation ring 3, between ceramic insulation ring 3 and shell 1, be provided with anodal sealing device 6, by cathode chamber 100 sealings.Between the end face of negative pole seal cover 11 and ceramic insulation ring 3, be provided with negative pole sealing ring 7, by anode chamber 400 sealings.
9 effects of storage sodium pipe are storing liquid sodium metals, can adopt all good austenitic stainless steels of welding performance and rigidity, can with 11 welding of negative pole seal cover.The bottom of storage sodium pipe 9 adopts rectangular base.The bottom of storage sodium pipe 9 is provided with through hole 91.The diameter 0.3-1mm of through hole 91, flows to the flow velocity of bursting tube 8 in order to limit Liquid Sodium from storage sodium pipe 9.In order to guarantee to store up the intensity of sodium pipe 9 and the safe operation of sodium-sulphur battery, the wall thickness 0.8-1.5mm of storage sodium pipe 9.
Meanwhile, the bottom of storage sodium pipe 9 is also provided with filter course 92, and filter course 92 is mainly to be formed by metallic fiber braiding, and particularly soft 304 or 316L stainless steel fibre braiding forms, metallic fiber diameter 8-20 micron.Filter course 92 effects are the high-melting-point contaminant particles of filtering in Liquid Sodium, such as sodium metal particulate of sodium carbonate particulate and not melting etc., prevent that through hole 91 is blocked, and prevent that these particles from entering the radial clearance 401 between bursting tube 8 and electrolyte ceramics pipe 4, and then cause this radial clearance 401 blocked, guarantee the smooth and easy inflow bursting tube 8 of Liquid Sodium, thereby prevent sodium-sulphur battery because electrolyte ceramics pipe 4 lost efficacy because can not get the supply of sufficient Liquid Sodium.
Bursting tube 8 is socketed in the outside of storage sodium pipe 9, and bursting tube 8 adopts fine aluminium or aluminium alloy, adopts cold drawn method to obtain, and wall thickness 0.5-1mm, to guarantee its intensity.Its role is to by the sodium in storage sodium pipe 9 and the sulphur content in cathode chamber 100 from.The internal diameter of bursting tube 8 is greater than the external diameter 0.6～1.2mm of storage sodium pipe 9, to control the amount of bursting tube 8 interior Liquid Sodium, thus the safe operation of assurance sodium-sulphur battery.In addition on the one hand, the end face of bursting tube 8 must be higher than the end face of electrolyte ceramics pipe 4, preferred mode is the end face higher than ceramic insulation ring 4, to stop when ceramic insulating tube 4 breaks, sodium infiltrates ceramic cathode chamber 100 from the top of electrolyte ceramics pipe 4, react with the sulphur in cathode chamber 100.
Because the bottom of bursting tube 8 is rectangular base, and the bottom of electrolyte ceramics pipe 4 is hemispheric, therefore, between the bottom of bursting tube 8 and the inwall of ceramic electrolysis tube 4 bottoms, resilient coating 5 will be set.The materials such as the adopted zirconia of resilient coating 5, silicon nitride, alumina powder, carbon dust, these materials can not with Liquid Sodium generation chemical reaction, sodium is not infiltrated, and insulation property are good.The effect of resilient coating 5 is to protect electrolyte ceramics pipe 4 bottoms; reduce bursting tube 8 and for the pressure of electrolyte ceramics pipe 4 bottoms, reduce the quality of the sodium of the participation reaction in anode chamber 400 simultaneously; guarantee the fail safe of electrolyte ceramics pipe 4 bottoms, and reduce the requirement for electrolyte ceramics pipe 4 perpendicularity and bottom circularity.
In radial clearance 401, be also filled with gap-fill layer 13, gap-fill layer 13 is by metallic fiber, and especially soft 304 or 316L stainless steel fibre braiding forms.The porosity of gap-fill layer 13 is 30-50%.13 pairs of sodium of gap-fill layer have suction-operated, simultaneously, owing to participating in the sodium of reaction, be only the inwall of electrolyte ceramics pipe 4 and the sodium in the radial clearance 401 between bursting tube 8 outer walls, therefore the suction-operated of gap-fill layer 13 can also reduce the sodium amount that participates in reaction, control the temperature of sodium-sulphur battery, thereby when effectively controlling electrolyte ceramics pipe 4 and breaking or generate micro-crack, the temperature of sodium-sulphur battery is below 600 ℃.
Meanwhile, between the bottom surface and shell 1 of electrolyte ceramics pipe 4 outer walls, the bottom of electrolyte ceramics pipe 4 outer walls is provided with bottom protective layer 10.The thickness d 3 of bottom protective layer 10 is 10～30mm.The Main Function of bottom protective layer 10 is to stop the bottom generation Liquid Sodium of electrolyte ceramics pipe 4 and the electrochemical reaction of liquid sulfur, and bottom protective layer 10 can adopt insulation property outstanding, and to sulphur or the nonwettable inorganic refractory fiber material of sodium polysulfide.The preferred material of bottom protective layer 10 is alumina silicate fibre.
By the synergy of resilient coating 5 and bottom protective layer 10, can prevent that the Liquid Sodium of electrolyte ceramics pipe 4 bottoms from participating in reaction, in the time of protection electrolyte ceramics pipe 4 bottom, reduced the requirement for electrolyte ceramics pipe 4 perpendicularity and bottom circularity.
During the work of sodium sulphur normal battery, the Liquid Sodium in storage sodium pipe 9, enters bursting tube 8 through filtering layer 92 and through hole 91, again from the top of bursting tube 8, overflow in described radial clearance 401, the sodium in described radial clearance 401 enters into the inwall of electrolyte ceramics pipe 4, and betatopic reaction occurs, become after sodium ion, sodium ion sees through electrolyte ceramics pipe 4, from passing of electrolyte ceramics pipe 4 outer walls, enters cathode chamber 100, and react with the liquid sulfur in porous, electrically conductive fibrofelt 2, generate sodium polysulfide.When electrolyte ceramics pipe 4 breaks or generates micro-crack; the end face of bursting tube 8 is higher than the end face of ceramic electrolysis tube 4; the Liquid Sodium overflowing from bursting tube 8 tops also cannot see through the liquid sulfur in porous, electrically conductive fibrofelt 2 electrolyte ceramics pipe 4 and cathode chamber 100 and react; the safeguard protection that has guaranteed sodium-sulphur battery is effective, controls the temperature of sodium-sulphur battery in 600 ℃.
An other improvement of sodium-sulphur battery is: the upper space of storage sodium pipe 9, in the space between the liquid level of Liquid Sodium and negative pole seal cover 11, be filled with protective gas, and this protective gas cannot be dissolved in Liquid Sodium, also cannot react with Liquid Sodium.This protective gas is preferably nitrogen or argon gas, the angle of large-scale production, is preferably nitrogen.Under the working temperature of sodium-sulphur battery, the air pressure P1 of storage sodium pipe 9 interior protective gas is 0.2-2 standard atmospheric pressure.The volume of the upper space of storage sodium pipe 9 is V1.
The upper space of cathode chamber 100, at the end face of porous, electrically conductive fibrofelt 2, to being also filled with between the end face of cathode chamber 100, porous, electrically conductive fibrofelt 2 cannot adsorb, and the protective gas not reacting with sulphur and sodium polysulfide.This protective gas is preferably nitrogen or argon gas, the angle of large-scale production, is preferably nitrogen.The upper space volume of cathode chamber 100 is V2.Under the working temperature of sodium-sulphur battery, the air pressure P2 in cathode chamber 100 is than the high 0.1-0.5 of the air pressure P1 standard atmospheric pressure in storage sodium pipe 9.
After 4 breakages of electrolyte ceramics pipe, because the duplicate protection of resilient coating 5 and bottom protective layer 10 is arranged at electrolyte ceramics pipe 4 bottoms, the 4 bottom fail safes of electrolyte ceramics pipe have been guaranteed.Due to when electrolyte ceramics pipe 4 breaks or has micro-crack, the air pressure P2 of the upper space of cathode chamber 100 is greater than the air pressure P1 of the upper space of storage sodium pipe 9, the Liquid Sodium of therefore participating in reaction is only the Liquid Sodium in described radial clearance 401, sulphur in the porous, electrically conductive fibrofelt 2 of cathode chamber 100 sees through electrolyte ceramics pipe 4, enter in radial clearance 401, react with Liquid Sodium.Because 2 pairs of sulphur of porous, electrically conductive fibrofelt have stronger adsorption capacity, enter sulphur in described radial clearance 401 still seldom, simultaneously, the product of Liquid Sodium and liquid sulfur reaction is adsorbed between radial clearance 401 and bursting tube 8 and storage sodium pipe 9, hinder the further reaction of Liquid Sodium and liquid sulfur, improve the security performance of battery.
Meanwhile, the utility model also improves anodal sealing device 6.Anodal sealing device 6 comprises L shaped becket 61, flute profile becket 62 and top metal ring 63.L shaped becket 61, flute profile becket 62 and top metal ring 63 are connected by chain type connected mode, so that the lateral surface of ceramic insulation ring 3 is connected with the medial surface of shell 1, thereby by 100 sealings of the cathode chamber between electrolyte ceramics pipe 4 and shell 1.
L shaped becket 61 is divided into vertical section 611 and horizontal segment 612, and the bottom surface of the end face of horizontal segment 612 and ceramic insulation ring 3 is fixed.Due to the bottom surface of cotton up to dead ring 3, along the outer rim of ceramic insulation ring 3, be provided with the stage structure 31 of falling from power, therefore also can the end face of horizontal segment 612 and the bottom surface of the stage structure 31 of falling from power of ceramic insulation ring 3 fix.The lateral surface of the medial surface of vertical section 611 and ceramic insulation ring 3 is fixed; The lateral surface of vertical section 611 is separated with the medial surface of shell 1, and the end face of vertical section 611 is higher than the end face of ceramic insulation ring 3.
Between ceramic insulation ring 3 and L shaped becket 61, all by thermocompression bonding, fix, because the selected scolder of thermocompression bonding is pure aluminum or aluminum alloy, therefore L shaped becket 61, flute profile becket 62 and top metal ring 63 preferred materials are fine aluminium or aluminium alloy.
The opening upwards of flute profile becket 62, and the bottom surface of grooved becket 62 is higher than the end face of ceramic insulation ring 3, and the end face of the bottom surface ceramic insulation ring 3 of grooved becket 62 is separated.Flute profile becket 62 is provided with inner ring cell wall 621 and outer ring cell wall 622, and inner ring cell wall 621 is higher than outer ring cell wall 622.Wherein the medial surface of the vertical section 611 of the lateral surface of outer ring cell wall 622 and L shaped becket 61 is by being welded and fixed, and preferred welding manner is Laser Welding or inert gas tungsten electrode protection weldering, contaminated to prevent sulphur or sodium polysulfide in cathode chamber 100.And the end face of the vertical section 611 of the end face of outer ring cell wall 622 and L shaped becket 61 is contour, to facilitate the welding between the outer ring cell wall 622 of grooved becket 62 and the vertical section 611 of L shaped becket 61.
The end face of top metal ring 63 and the end face of flute profile becket 62 inner ring cell walls 621 and the end face of shell 1 are contour simultaneously, and the end face of top metal ring 63 is provided with a cannelure 631, so that top metal ring 63 and grooved becket 62, the welding between top metal ring 63 and shell 1.
By chain type being set between the medial surface of ceramic insulation ring 3 and shell 1, be connected L shaped becket 61, flute profile becket 62 and top metal ring 63, by cathode chamber 100 sealings.Such design can be in sodium-sulphur battery temperature-fall period; by the suffered compression of electrolyte ceramics pipe 4; by ceramic insulation ring 3, pass to L shaped becket 61, flute profile becket 62 and top metal ring 63; and L shaped becket 61, flute profile becket 62 and top metal ring 63 are by deformation; the compression that absorbed electrolyte earthenware 4 is suffered; thereby prevent the cracking at electrolyte ceramics pipe 4 bottoms and top or occur micro-crack, the safe operation of protection sodium-sulphur battery.
And the bottom surface of ceramic insulation ring 3 is provided with the effect of the stage structure 31 of falling from power and is: prevent that ceramic insulation ring 3 from ftractureing when bearing the compression that electrolyte ceramics pipe 4 passes over, thereby cause sodium-sulphur battery to lose efficacy.
The effect that the top of the medial surface of shell 1 is provided with limited step structure 11 is the weld strength between reinforced top becket 63 and shell 1.
In order further to guarantee the stable operation of sodium-sulphur battery, for the size of L shaped becket 61, flute profile becket 62, also made concrete regulation:
Wherein the thickness d of L shaped becket 61 is 0.3～1mm, and the thickness d of L shaped becket 61 is lower than 0.3mm, L shaped becket 61 processing difficulties, and mechanical property is poor.Thickness is greater than 1mm, cannot be by the suffered compression of the effective absorbed electrolyte earthenware 4 of deformation, the residual compressive stress that also cannot make flute profile becket 62 and top metal ring 63 cause ceramic insulation ring 3 to be subject to by the suffered compression of the effective absorbed electrolyte earthenware 4 of deformation strengthens, cause ceramic insulation ring 3 crackings, sodium-sulphur battery lost efficacy.
The end face of the vertical section 611 of L shaped becket 61 is 4-10mm higher than the height h1 of the end face of ceramic insulation ring 3.If the end face of the vertical section 611 of L shaped becket 61 is less than 4mm higher than the height h1 of the end face of ceramic insulation ring 3, the easy short circuit of sodium-sulphur battery, the end face of the vertical section 611 of L shaped becket 61 is greater than 10mm higher than the height h1 of the end face of ceramic insulation ring 3, cause the waste of material in L shaped becket 61 manufacture processes for a moment, two can cause sodium-sulphur battery height to increase, and affect sodium-sulphur battery work temperature.
The height h2 of the outer ring cell wall 622 of flute profile becket 62 is 1.5～2.5mm.The height h2 of the outer ring cell wall 622 of flute profile becket 62 is less than 1.5mm, the weld strength between the outer ring cell wall 622 of flute profile becket 62 and the vertical section 611 of L shaped becket 61 reduces, the height h2 of the outer ring cell wall 622 of flute profile becket 62 is greater than 2.5mm, distance between the end face of the bottom surface of flute profile becket 62 and ceramic insulation ring 3 reduces, the easy short circuit of sodium-sulphur battery.
After testing, adopted after this positive pole sealing device 6, sodium-sulphur battery is after 20 coolings of experience and heating up, and the bottom of its electrolyte ceramics pipe 4 and top still remain intact and break or micro-crack without any, guarantee that can reach more than 10 years the useful life of sodium-sulphur battery.
Simultaneously, in order further to prevent ceramic insulation ring 3 crackings, on the end face of ceramic insulation ring 3, inner edge along the end face of ceramic insulation ring 3 is provided with a recessed ledge frame face 32, the bottom of negative pole sealing ring 7 is provided with a radially outward outstanding flange 71, and the bottom surface of flange 71 is fixed with this recessed ledge frame face 32.
Claims (9)
1. a sodium-sulphur battery, comprises shell (1) and is socketed in the electrolyte ceramics pipe (4) in described shell (1), described shell (1) and described electrolyte ceramics pipe (4) form cathode chamber (100) between radially, described electrolyte ceramics pipe (4) radially inner side forms anode chamber (400), in described cathode chamber (100), be filled with porous, electrically conductive fibrofelt (2), the end face of described electrolyte ceramics pipe (4) is provided with radially outward outstanding ceramic insulation ring (3), between described ceramic insulation ring (3) and described shell (1), be provided with anodal sealing device (6), described cathode chamber (100) is sealed, the bursting tube (8) that is provided with storage sodium pipe (9) in described anode chamber (400) and is socketed in described storage sodium pipe (9) outside, the top of described storage sodium pipe (9) is by negative pole seal cover (11) sealing, between described ceramic insulation ring (3) and described negative pole seal cover (11), be provided with negative pole sealing ring (7), described anode chamber (400) is sealed, it is characterized in that:
Between the bottom of the bottom of described bursting tube (8) outer wall and described electrolyte ceramics pipe (4) inwall, be provided with insulation and the nonwettable resilient coating of liquid towards sodium (5), the bottom of described electrolyte ceramics pipe (4) outer wall be provided with insulation and to sulphur and the nonwettable bottom protective layer of sodium polysulfide (10).
2. a kind of sodium-sulphur battery according to claim 1, is characterized in that: described resilient coating (5) is any one in employing zirconia, silicon nitride, alumina powder or carbon dust, and described bottom protective layer (10) adopts alumina silicate fibre to make.
3. a kind of sodium-sulphur battery according to claim 1, it is characterized in that: in the radial clearance (401) between described bursting tube (8) and described electrolyte ceramics pipe (4), be provided with gap-fill layer (13), being weaved into by metallic fiber of described gap-fill layer (13), and the porosity of described gap-fill layer (13) is 30～50%.
4. a kind of sodium-sulphur battery according to claim 1, is characterized in that: the bottom of described storage sodium pipe (9) is provided with through hole (91) and filter course (92), and described filter course (92) is become by 304 stainless steels or 316 stainless fibrages.
5. according to a kind of sodium-sulphur battery described in any one in claim 4, it is characterized in that: the bottom of described storage sodium pipe (9) and described bursting tube (8) is rectangular base.
6. according to a kind of sodium-sulphur battery described in claim 1 to 5, it is characterized in that: the end face of described bursting tube (8) is higher than the end face of described electrolyte ceramics pipe (4).
7. according to a kind of sodium-sulphur battery described in any one in claim 1 to 5, it is characterized in that: in described storage sodium pipe (9) and described cathode chamber (100), be all filled with protective gas.
8. a kind of sodium-sulphur battery according to claim 7, is characterized in that: the protective gas in described storage sodium pipe (9) and described cathode chamber (100) is nitrogen.
9. a kind of sodium-sulphur battery according to claim 1, is characterized in that: described anodal sealing device (6) comprises L shaped becket (61), flute profile becket (62) and top metal ring (63);
Described L shaped becket (61) is divided into vertical section (611) and horizontal segment (612), the bottom surface of the end face of described horizontal segment (612) and described ceramic insulation ring (3) is fixed, and the lateral surface of the medial surface of described vertical section (611) and described ceramic insulation ring (3) is fixed; The lateral surface of described vertical section (611) is separated with the medial surface of described shell (1), and the end face of described vertical section (611) is higher than the end face of described ceramic insulation ring (3);
The bottom surface of described flute profile becket (62) is higher than the end face of described ceramic insulation ring (3), described flute profile becket (62) is provided with inner ring cell wall (621) and outer ring cell wall (622), described inner ring cell wall (621) is higher than described outer ring cell wall (622), the medial surface of the vertical section (611) of the lateral surface of described outer ring cell wall (622) and described L shaped becket (61) is fixed, and the end face of the vertical section (611) of the end face of described outer ring cell wall (622) and described L shaped becket (61) is contour;
Described top metal ring (63) connects the lateral surface of inner ring cell wall (621) and the medial surface of described shell (1) of described flute profile becket (62), and the end face of the end face of described top metal ring (63) and described flute profile becket (62) inner ring cell wall (621) and the end face of described shell (1) are contour; The end face of described top metal ring (63) is upper outside a cannelure (631).
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| CN201320639975.XU CN203491355U (en) | 2013-10-17 | 2013-10-17 | Sodium-sulfur battery |
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| CN201320639975.XU CN203491355U (en) | 2013-10-17 | 2013-10-17 | Sodium-sulfur battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500855A (en) * | 2013-10-17 | 2014-01-08 | 上海电气钠硫储能技术有限公司 | Sodium-sulfur cell |
| CN106486708A (en) * | 2016-12-14 | 2017-03-08 | 上海电气钠硫储能技术有限公司 | A kind of sodium-sulphur battery glass sealing frock |
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2013
- 2013-10-17 CN CN201320639975.XU patent/CN203491355U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500855A (en) * | 2013-10-17 | 2014-01-08 | 上海电气钠硫储能技术有限公司 | Sodium-sulfur cell |
| CN103500855B (en) * | 2013-10-17 | 2016-01-20 | 上海电气钠硫储能技术有限公司 | A kind of sodium-sulphur battery |
| CN106486708A (en) * | 2016-12-14 | 2017-03-08 | 上海电气钠硫储能技术有限公司 | A kind of sodium-sulphur battery glass sealing frock |
| CN106486708B (en) * | 2016-12-14 | 2019-01-29 | 上海电气钠硫储能技术有限公司 | A kind of sodium-sulphur battery glass sealing tooling |
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