CA1318939C - Electrochemical storage cell - Google Patents
Electrochemical storage cellInfo
- Publication number
- CA1318939C CA1318939C CA000584799A CA584799A CA1318939C CA 1318939 C CA1318939 C CA 1318939C CA 000584799 A CA000584799 A CA 000584799A CA 584799 A CA584799 A CA 584799A CA 1318939 C CA1318939 C CA 1318939C
- Authority
- CA
- Canada
- Prior art keywords
- flange
- solid electrolyte
- housing
- storage cell
- cartridge
- 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.)
- Expired - Fee Related
Links
- 210000000352 storage cell Anatomy 0.000 title claims abstract description 34
- 239000007784 solid electrolyte Substances 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims description 20
- 229910052708 sodium Inorganic materials 0.000 claims description 19
- 239000011734 sodium Substances 0.000 claims description 19
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 18
- 229920001971 elastomer Polymers 0.000 claims description 15
- 239000000806 elastomer Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 239000005864 Sulphur Substances 0.000 claims description 6
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 abstract description 2
- 229920001021 polysulfide Polymers 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 101100227721 Rattus norvegicus Frk gene Proteins 0.000 description 1
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003385 sodium Chemical class 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An electrochemical storage cell has a cupular housing and a solid electrolyte of the same shape disposed in the housing and joined to the latter. In order to keep mechanical loads and heat away from the ceramic solid electrolyte, the storage cell has elastomeric gaskets resistant to polysulphide.
An electrochemical storage cell has a cupular housing and a solid electrolyte of the same shape disposed in the housing and joined to the latter. In order to keep mechanical loads and heat away from the ceramic solid electrolyte, the storage cell has elastomeric gaskets resistant to polysulphide.
Description
The invention relates to an electrochemical storage cell having an anode space and a cathode space separated by a cartridge for solid electrolyte.
Electrochemical storage cells of this type are highly suitable for the construction of high-temperature storage batteries intended for use as energy sources of electric vehicles. An example of this is provided by rechargeable storage cells based on sodium and sulphur, which contain a solid electrolyte made from beta-aluminium oxide separating the anode space from the cathode space. An advantage of these electrochemical storage cells is that no electrochemical ~ide reactions occur during charging. Ths reason for this is that only sodium ions are able to pass through the solid electrolyte. The current efficiency of a sodium/sulphur storage cell of this type is therefore 100%.
German Offenlegungsschrift 3,340,424 discloses an electrochemical storage cell in which the solid electrolyte is bond~d in the region of a seal to an alpha-aluminium oxide ring. This insulation ring is joined to the metallic components which form the cap of the storage cell by thermocompression. This forms a mechanically rigid joint between the solid electrolyte and the housing. All the tensile and compressive forces which occur are ther~by transferred to the solid electrolyte via the partially glassified insulating ring, which is frequently the cause of ceramic fracture.
According to the present invention there is provided a sodium-sulphur electrochemical storage cell having an anode space and a cathode space separated by a cartridge for the sodium-containing solid electrolyte and are bounded externally by a metallic housing which is externally sealed 3 ~
by a cap, gaskets made of a flexible material being provided at least in the region of the cap.
By using elastic gaskets, tensile and compressive forces and heat are kept away from the solid electrolytle, thus increasing its service life~ The flexible material used is insensitive to the action of polysulphide and, in addition, retains its elasticity for the entire servicle life of the storage cell. By means of additional design measures and by using additional gaskets made of graphite, it can be ensured that the gaskets produced from the polyfluorinated elastomer are fully protected against the action of sodium.
The invention will now be described in more detail, with reference to the accompanying drawings, in which:-Figure 1 shows a vertical section through a storage cell having elastic gaskets and ioint elements;
Figure 2 shows a variant of the storage cell shown in Figure 1; and Figure 3 shows a further embodiment of the storage cell in Figure 1.
2Q Figure 1 shows an electrochemical storage cell 1 comprising a cupular housing 2 and a solid el~ctrolyte 3. The dimensions of the solid electrolyte 3 are selected so that a coherent interspace, which serves as the cathode space, is formed between the inner surface of the housing 2 and the outer surface of the solid electrolyte 30 The interior of the solid electrolyte 3 is used as the anode space 5.
A cartridge 6 containing sodium is insert~d into the solid electrolyte 3. The dimensions of the cartridge 6 are selected so that a narrow gap 7, which is always filled with sodium, remains all the way round between the inner surfaces of the solid electrolyte 3 and the outer surfaces of the cartridge 6. This sodium flows out of the cartridge 6 through an opening 6A into this gap 7. The cathode space 5 is filled with a felt, for example made of graphite, ~ 3~
impregnated with sulphur. The cartridge 6 disposed in the so]id electrolyte 3 has a flange 6F facing outwards.
This flange rests on the edge of the solid electrolyte.
In order to ensure sealing of the anode space 4, in particular of the gap 7, a graphite felt 8, which is at least as wide as the underside of the flange 6F, is disposed on the underside of the flange 6F. In order to prevent spontaneous discharge of the storage cell 1, the edge of the solid electrolyte 3 is coated by a glass coating 9 on which, if appropriate, an additional insulation coating 10 is disposed.
These two measures prevent an electroconductive joint between the solid electxolyte 3 and the graphite felt 8.
The housing 2 is sealed externally using a cylindrical cap 11. This is provided with two flanges llA and llB facing inwards. At the open end, the housing of the storage cell 2 liXewise has a flange 2F facing inwards. The first flange llA of the cap 11 is placed on the flange 2F. The free end of the two flanges 2F and llA are bent downwards ~nd upwards respectively to form a V-shaped channel 13. The gasket 14, which is produced from an elastomer, preferahly a perfluorinated elaskomer, is disposed in this channel 13.
The gasket 14 is pressed against the outer wal~ of the solid electrolyte 3 by the two flanges 2F and llA~ thus externally sealing the cathode space 5 helow the flange 2F. The ~5 dimensions of the cylindrical cap 11 are such that its internal diameter is slightly greater than the external diameter of the housing 2. It is thereby possible for the lateral periphery of the cap 11 to enclose the upper end of the housing 2 in the manner of a sleeve and to be permanently joined to the outer surface of the housing 2. The second flange llB of the cap 11 is placed on the surface of the flange 6F of the cartridge 6 via a second gasXet 15 in the form of a ring.
,~ ?''~ S
Before the cap 11 is perma~ently joined to the housing 2, the gasket 15 is initially compressed in the direction of the longitudinal axis of the storage cell 1 in order to achieve optimum sealing of the storage cell. The gasket 15 is likewise produced from a perfluorinated elastomer. The two gaskets 13 and 15 ~orm a hermetically-sealed interior space 16 between the cap 11 and the solid electrolyte 3. In order to prevent accumulation of sodium vapour in this space, a sodium absorber 17 is disposed in the space :L6. A graphite felt 18 which surrounds the tip 3K and serves as a centreing device is disposed between the base 2B of the housing 2 arld the rounded tip 3K of the solid electrolyte 3.
The storage cell shown in Figure 2 has the same compon~nts 2, 3, 4, 5, 6 and 11 as the storage cell shown in Figure 1. The solid electrolyte 3 is joined at its edge to a very thin-walled insulation ring 8 made of alpha-aluminium oxide. The insulation ring 8 is in this case joined to the solid electrolyte by means of a bond joint, for which purpose a ring 9 made of aluminium is disposed directly on the edge of ~0 the solid electrolyte 3.
A further ring 10 made of aluminium is disposed on the insulation ring 8 itself. The flange 6F of the cartridge 6 is placed on this ring.10 and permanently joined to the solid electrolyte 3 by means of bonding~ At the upper end, the housing 2 has a first flange 2F facing inwards. This extends inwards almost to the solid electrolyte, its free end being bent slightly downwards. An inwards and outward-facing first flange of the cap 11 is placed on this flange 2F. The free end of the inward-facing flange part llA extends virtually to the solid electrolyte 3. In order to form a V-shaped channel 13 together with the flange 2F, its end is bent slightly upwards.
A gasket 14 produced from an elastomer, preferably a perfluorinated elastomer, is disposed in the V-shaped channel 1~. The gasket 14, in the ~orm of a ring, i9 additionally ~3~ ~33.~
pressed against the outer wall of the solid electrolyte 3 by the two flanges 2F and llA. This ensures complete external sealing of the cathode space 5.
The housing 2 is provided with a second inward-facing flange 2R, which is disposed a few millimetres above the first flange 2F. The separation between the two is selected so that the flange llA of the cap 11 can he inserted between the two, and the flange 2R additionally rests on the flange llA. The second inward-facing flange llB of the cap 11 is placed on the flange 6F of the cartridge 6 via a gasket 15.
The gasket 15 is in the form of a ring and is producad from a perfluorinated elastomer. During production of the storage cell 1, the gasket 15 is pressed outwards in the axial direction of the storage cell 1 in order to achieve complete sealing of the storage cell 1.
In order to ensure the support and centreing necessary for the solid electxolyte 3, in spite of the use of elastic gaskets in the cap region, a cylindrical centreing device 20, which is fir~ly joined to the base of the storage cell, is disposed between the round tip 3K of the solid electrolyte 3 and the base o~ the housing 2. A support element 21 in the form of a ring and made from an elastic material is disposed in the centreing device 20.
The round tip 3K of tha solid electrolyte rests on this supporting element 21. A sodium absorber 17 is again disposed in the annular gap 16 formed by the two inwardly ~acing flanges llA and llB of the cap 11 in order to protect the gaskets 14 and 15 from th2 effects of any sodium vapour which may possibly emerge from the anode space 4.
Figure 3 shows a Eurther storage cell 1 which, like the storage cells 1 of Figures 1 and 2, has components 2, 3, 4, 5 and 6. The flange 6F of the cartridge 6 rest,s on the upward-~acing edye of the solid electrolyte 3 via a gasket 14. ~he gasket 14 is as broad as the underside of the flange 6F. It has recesses 14A into which the upper edge region of the solid electrolyte 3 is inserted.
A further gasket 22 produced from graphite and in the form of a ring is disposed between the upper edge of the solid electrolyte 3 and the cartridge 6. The uppe3- region o:E this gasket 22 is likewise inserted into the recess 14A of the gasket 14.
The gasket 22 has the task o~ completely sealing the anode space 4 externally so that no contact arises between the sodium and the gasket 14, which is produced from an elastomer.
The housing 2 has an inwardly facing flange 2F which rests on the flange 6F of the cartridge 6 via a gasket 15. The gasket 15 is in the form of a ring and has an annular recess 15A
into which the edge region of the flange 6 and the lateral region of the gasket 14 are inserted.
A centreing device 20 and a ~upport device 21 are again provided between the base of the housing 2 and the round tip 3K of the solid electrolyte 3, thus ensuring that the solid electrolyte 3 is kept in the necessary position in spite of the use of elastic gask~ts.
Electrochemical storage cells of this type are highly suitable for the construction of high-temperature storage batteries intended for use as energy sources of electric vehicles. An example of this is provided by rechargeable storage cells based on sodium and sulphur, which contain a solid electrolyte made from beta-aluminium oxide separating the anode space from the cathode space. An advantage of these electrochemical storage cells is that no electrochemical ~ide reactions occur during charging. Ths reason for this is that only sodium ions are able to pass through the solid electrolyte. The current efficiency of a sodium/sulphur storage cell of this type is therefore 100%.
German Offenlegungsschrift 3,340,424 discloses an electrochemical storage cell in which the solid electrolyte is bond~d in the region of a seal to an alpha-aluminium oxide ring. This insulation ring is joined to the metallic components which form the cap of the storage cell by thermocompression. This forms a mechanically rigid joint between the solid electrolyte and the housing. All the tensile and compressive forces which occur are ther~by transferred to the solid electrolyte via the partially glassified insulating ring, which is frequently the cause of ceramic fracture.
According to the present invention there is provided a sodium-sulphur electrochemical storage cell having an anode space and a cathode space separated by a cartridge for the sodium-containing solid electrolyte and are bounded externally by a metallic housing which is externally sealed 3 ~
by a cap, gaskets made of a flexible material being provided at least in the region of the cap.
By using elastic gaskets, tensile and compressive forces and heat are kept away from the solid electrolytle, thus increasing its service life~ The flexible material used is insensitive to the action of polysulphide and, in addition, retains its elasticity for the entire servicle life of the storage cell. By means of additional design measures and by using additional gaskets made of graphite, it can be ensured that the gaskets produced from the polyfluorinated elastomer are fully protected against the action of sodium.
The invention will now be described in more detail, with reference to the accompanying drawings, in which:-Figure 1 shows a vertical section through a storage cell having elastic gaskets and ioint elements;
Figure 2 shows a variant of the storage cell shown in Figure 1; and Figure 3 shows a further embodiment of the storage cell in Figure 1.
2Q Figure 1 shows an electrochemical storage cell 1 comprising a cupular housing 2 and a solid el~ctrolyte 3. The dimensions of the solid electrolyte 3 are selected so that a coherent interspace, which serves as the cathode space, is formed between the inner surface of the housing 2 and the outer surface of the solid electrolyte 30 The interior of the solid electrolyte 3 is used as the anode space 5.
A cartridge 6 containing sodium is insert~d into the solid electrolyte 3. The dimensions of the cartridge 6 are selected so that a narrow gap 7, which is always filled with sodium, remains all the way round between the inner surfaces of the solid electrolyte 3 and the outer surfaces of the cartridge 6. This sodium flows out of the cartridge 6 through an opening 6A into this gap 7. The cathode space 5 is filled with a felt, for example made of graphite, ~ 3~
impregnated with sulphur. The cartridge 6 disposed in the so]id electrolyte 3 has a flange 6F facing outwards.
This flange rests on the edge of the solid electrolyte.
In order to ensure sealing of the anode space 4, in particular of the gap 7, a graphite felt 8, which is at least as wide as the underside of the flange 6F, is disposed on the underside of the flange 6F. In order to prevent spontaneous discharge of the storage cell 1, the edge of the solid electrolyte 3 is coated by a glass coating 9 on which, if appropriate, an additional insulation coating 10 is disposed.
These two measures prevent an electroconductive joint between the solid electxolyte 3 and the graphite felt 8.
The housing 2 is sealed externally using a cylindrical cap 11. This is provided with two flanges llA and llB facing inwards. At the open end, the housing of the storage cell 2 liXewise has a flange 2F facing inwards. The first flange llA of the cap 11 is placed on the flange 2F. The free end of the two flanges 2F and llA are bent downwards ~nd upwards respectively to form a V-shaped channel 13. The gasket 14, which is produced from an elastomer, preferahly a perfluorinated elaskomer, is disposed in this channel 13.
The gasket 14 is pressed against the outer wal~ of the solid electrolyte 3 by the two flanges 2F and llA~ thus externally sealing the cathode space 5 helow the flange 2F. The ~5 dimensions of the cylindrical cap 11 are such that its internal diameter is slightly greater than the external diameter of the housing 2. It is thereby possible for the lateral periphery of the cap 11 to enclose the upper end of the housing 2 in the manner of a sleeve and to be permanently joined to the outer surface of the housing 2. The second flange llB of the cap 11 is placed on the surface of the flange 6F of the cartridge 6 via a second gasXet 15 in the form of a ring.
,~ ?''~ S
Before the cap 11 is perma~ently joined to the housing 2, the gasket 15 is initially compressed in the direction of the longitudinal axis of the storage cell 1 in order to achieve optimum sealing of the storage cell. The gasket 15 is likewise produced from a perfluorinated elastomer. The two gaskets 13 and 15 ~orm a hermetically-sealed interior space 16 between the cap 11 and the solid electrolyte 3. In order to prevent accumulation of sodium vapour in this space, a sodium absorber 17 is disposed in the space :L6. A graphite felt 18 which surrounds the tip 3K and serves as a centreing device is disposed between the base 2B of the housing 2 arld the rounded tip 3K of the solid electrolyte 3.
The storage cell shown in Figure 2 has the same compon~nts 2, 3, 4, 5, 6 and 11 as the storage cell shown in Figure 1. The solid electrolyte 3 is joined at its edge to a very thin-walled insulation ring 8 made of alpha-aluminium oxide. The insulation ring 8 is in this case joined to the solid electrolyte by means of a bond joint, for which purpose a ring 9 made of aluminium is disposed directly on the edge of ~0 the solid electrolyte 3.
A further ring 10 made of aluminium is disposed on the insulation ring 8 itself. The flange 6F of the cartridge 6 is placed on this ring.10 and permanently joined to the solid electrolyte 3 by means of bonding~ At the upper end, the housing 2 has a first flange 2F facing inwards. This extends inwards almost to the solid electrolyte, its free end being bent slightly downwards. An inwards and outward-facing first flange of the cap 11 is placed on this flange 2F. The free end of the inward-facing flange part llA extends virtually to the solid electrolyte 3. In order to form a V-shaped channel 13 together with the flange 2F, its end is bent slightly upwards.
A gasket 14 produced from an elastomer, preferably a perfluorinated elastomer, is disposed in the V-shaped channel 1~. The gasket 14, in the ~orm of a ring, i9 additionally ~3~ ~33.~
pressed against the outer wall of the solid electrolyte 3 by the two flanges 2F and llA. This ensures complete external sealing of the cathode space 5.
The housing 2 is provided with a second inward-facing flange 2R, which is disposed a few millimetres above the first flange 2F. The separation between the two is selected so that the flange llA of the cap 11 can he inserted between the two, and the flange 2R additionally rests on the flange llA. The second inward-facing flange llB of the cap 11 is placed on the flange 6F of the cartridge 6 via a gasket 15.
The gasket 15 is in the form of a ring and is producad from a perfluorinated elastomer. During production of the storage cell 1, the gasket 15 is pressed outwards in the axial direction of the storage cell 1 in order to achieve complete sealing of the storage cell 1.
In order to ensure the support and centreing necessary for the solid electxolyte 3, in spite of the use of elastic gaskets in the cap region, a cylindrical centreing device 20, which is fir~ly joined to the base of the storage cell, is disposed between the round tip 3K of the solid electrolyte 3 and the base o~ the housing 2. A support element 21 in the form of a ring and made from an elastic material is disposed in the centreing device 20.
The round tip 3K of tha solid electrolyte rests on this supporting element 21. A sodium absorber 17 is again disposed in the annular gap 16 formed by the two inwardly ~acing flanges llA and llB of the cap 11 in order to protect the gaskets 14 and 15 from th2 effects of any sodium vapour which may possibly emerge from the anode space 4.
Figure 3 shows a Eurther storage cell 1 which, like the storage cells 1 of Figures 1 and 2, has components 2, 3, 4, 5 and 6. The flange 6F of the cartridge 6 rest,s on the upward-~acing edye of the solid electrolyte 3 via a gasket 14. ~he gasket 14 is as broad as the underside of the flange 6F. It has recesses 14A into which the upper edge region of the solid electrolyte 3 is inserted.
A further gasket 22 produced from graphite and in the form of a ring is disposed between the upper edge of the solid electrolyte 3 and the cartridge 6. The uppe3- region o:E this gasket 22 is likewise inserted into the recess 14A of the gasket 14.
The gasket 22 has the task o~ completely sealing the anode space 4 externally so that no contact arises between the sodium and the gasket 14, which is produced from an elastomer.
The housing 2 has an inwardly facing flange 2F which rests on the flange 6F of the cartridge 6 via a gasket 15. The gasket 15 is in the form of a ring and has an annular recess 15A
into which the edge region of the flange 6 and the lateral region of the gasket 14 are inserted.
A centreing device 20 and a ~upport device 21 are again provided between the base of the housing 2 and the round tip 3K of the solid electrolyte 3, thus ensuring that the solid electrolyte 3 is kept in the necessary position in spite of the use of elastic gask~ts.
Claims (7)
1. An electrochemical storage cell based on sodium and sulphur having an anode space and a cathode space which are separated from each other by a solid electrolyte containing a cartridge filled with sodium and provided with a flange outwardly bounded by a metallic housing having a closure element with elastic sealing elements, wherein a housing having an inwardly directed flange at its open end and a closure element, constructed as a cylinder, has two inwardly directed flanges, of which the first flange is mounted on the flange of the housing and the two flanges are brought up to the solid electrolyte and their free ends are bent upwards or downwards, respectively, to form a V-shaped channel in which a sealing element made from an elastomer is disposed in a protected manner, wherein there is applied to a rim of the solid electrolyte a glass layer on top of which there are disposed an insulating layer and a graphite seal on which the flange, which projects outwards over the solid electrolyte and has the width of the graphite seal, of the cartridge is mounted, wherein there is disposed in a protected manner on the upwardly directed rim of the flange a further sealing element which is made from an elastomer and which supports the second, inwardly directed flange of the closure element, and wherein the inside diameter of the cylindrical closure element is slightly larger than the outside diameter of the housing and the upper rim region of the housing is surrounded in a sleeve-like manner thereby.
2. An electrochemical storage cell based on sodium and sulphur having an anode space and a cathode space which are separated from each other by a solid electrolyte containing a cartridge filled with sodium and provided with a flange outwardly bounded by a metallic housing having a closure element with elastic sealing elements, wherein the outwardly directed flange of the cartridge is joined to an upwardly directed rim of the solid electrolyte by means of an aluminium oxide insulating ring, wherein a first, inwardly and outwardly directed flange of the closure element is mounted on a first, inwardly directed flange of the housing, wherein the two flanges are bent upwards and downwards, respectively, to form a V-shaped channel, for the protected reception of a sealing element made from an elastomer and pressed against the solid electrolyte, and wherein a second, inwardly directed flange of the housing is mounted on the upper side of the outwardly directed part of the flange and the second, inwardly directed flange of the closure element is supported on the flange of the cartridge by means of a sealing element disposed in a protected manner and made of an elastomer.
3. An electrochemical storage cell based on sodium and sulphur having an anode space and a cathode space which are separated from each other by a solid electrolyte containing a cartridge filled with sodium and provided with a flange outwardly bounded by a metallic housing which has a closure element with elastic sealing elements, wherein the flange of the cartridge is mounted on an upwardly directed rim of the solid electrolyte by means of a sealing element which is made of an elastomer and is constructed as a ring, wherein an annular gap formed between the cartridge and the solid electrolyte is sealed by a sealing element which is made of graphite felt and is constructed as a ring, wherein the sealing element has step-shaped recesses for receiving the upper rim of the solid electrolyte and a sub-region of the sealing element, and wherein an inwardly directed flange of the housing is mounted on the rim of the flange of the cartridge by means of an annular sealing element which is made from an elastomer.
4. A storage cell according to any one of claims 1 to 3, wherein the sealing elements are made from an elastomer.
5. A storage cell according to any one of claims 1 to 3, wherein an annular space bounded by the flanges of the closure element contains a sodium absorber.
6. A storage cell according to any one of claims 1 to 3, wherein there are provided between the base of the housing and a round dome of the solid electrolyte at least one centering device, a support fixture or both, between which the round dome of the solid electrolyte is embedded.
7. A storage device according to any one of claims 1 to 3, wherein the sealing elements are made from a perfluorinated elastomer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3741238.8 | 1987-12-05 | ||
| DE19873741238 DE3741238A1 (en) | 1987-12-05 | 1987-12-05 | ELECTROCHEMICAL STORAGE CELL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1318939C true CA1318939C (en) | 1993-06-08 |
Family
ID=6341933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000584799A Expired - Fee Related CA1318939C (en) | 1987-12-05 | 1988-12-02 | Electrochemical storage cell |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0320693B1 (en) |
| JP (1) | JPH01186765A (en) |
| CA (1) | CA1318939C (en) |
| DE (2) | DE3741238A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9153803B2 (en) * | 2012-07-13 | 2015-10-06 | Massachusetts Institute Of Technology | High temperature sealed electrochemical cell |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3756856A (en) * | 1971-11-02 | 1973-09-04 | Ford Motor Co | Flexible sealing material for energy conversion devices |
| US3953227A (en) * | 1973-01-03 | 1976-04-27 | The Electricity Council | Electrochemical cells having a liquid alkali metal electrode and solid electrolyte |
| GB1452482A (en) * | 1973-01-16 | 1976-10-13 | British Railways Board | Sodium sulphur cells |
| DE2551604C2 (en) * | 1974-11-19 | 1985-01-31 | The Secretary Of State For Industry In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland, London | Electric cell with a solid electrolyte |
| GB1533853A (en) * | 1975-02-14 | 1978-11-29 | Chloride Group Ltd | Electric storage batteries |
| US3946751A (en) * | 1975-02-18 | 1976-03-30 | General Electric Company | Cell casing with a hermetic mechanical seal and a hermetically sealed sodium-sulfur cell |
| DE2556279A1 (en) * | 1975-12-13 | 1977-06-16 | Bbc Brown Boveri & Cie | Seal ring for ceramic to metal jointing esp. in electric cells - has diamond-shaped profile and is of soft metal, e.g. gold or aluminium |
| GB1496407A (en) * | 1976-07-12 | 1977-12-30 | Chloride Silent Power Ltd | Electrochemical cells with a solid electrolyte |
| US4110518A (en) * | 1976-10-01 | 1978-08-29 | P.R. Mallory & Co. Inc. | Fluorocarbon seal |
| US4054728A (en) * | 1977-02-09 | 1977-10-18 | Bell Telephone Laboratories, Incorporated | Sodium-sulfur batteries |
| DE2819027C2 (en) * | 1978-04-29 | 1982-09-23 | Brown, Boveri & Cie Ag, 6800 Mannheim | Electrochemical storage cell |
| US4204035A (en) * | 1978-09-25 | 1980-05-20 | Electric Power Research Institute, Inc. | Sodium insert container for a sodium-sulfur cell and its method of use |
| US4169919A (en) * | 1978-10-26 | 1979-10-02 | Ford Motor Company | Double seal for sodium sulfur battery |
| US4192911A (en) * | 1978-11-01 | 1980-03-11 | Ford Motor Company | Sodium sulfur battery seal |
| DE3114348A1 (en) * | 1981-04-09 | 1982-11-04 | Brown, Boveri & Cie Ag, 6800 Mannheim | "RECHARGEABLE GALVANIC SINGLE CELL" |
| US4374185A (en) * | 1981-05-14 | 1983-02-15 | United Technologies Corporation | High temperature, high pressure chemical resistant seal material |
| DE3340264A1 (en) * | 1983-11-08 | 1985-05-15 | Brown, Boveri & Cie Ag, 6800 Mannheim | ELECTROCHEMICAL STORAGE CELL |
| DE3340424A1 (en) * | 1983-11-09 | 1985-05-15 | Brown, Boveri & Cie Ag, 6800 Mannheim | ELECTROCHEMICAL STORAGE CELL |
-
1987
- 1987-12-05 DE DE19873741238 patent/DE3741238A1/en not_active Withdrawn
-
1988
- 1988-11-29 EP EP88119858A patent/EP0320693B1/en not_active Expired - Lifetime
- 1988-11-29 DE DE8888119858T patent/DE3874699D1/en not_active Expired - Lifetime
- 1988-12-02 CA CA000584799A patent/CA1318939C/en not_active Expired - Fee Related
- 1988-12-05 JP JP63306202A patent/JPH01186765A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0320693B1 (en) | 1992-09-16 |
| JPH01186765A (en) | 1989-07-26 |
| DE3741238A1 (en) | 1989-06-15 |
| DE3874699D1 (en) | 1992-10-22 |
| EP0320693A1 (en) | 1989-06-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |