CN105390756A - Safe sodium-sulfur cell - Google Patents
Safe sodium-sulfur cell Download PDFInfo
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- CN105390756A CN105390756A CN201510817550.7A CN201510817550A CN105390756A CN 105390756 A CN105390756 A CN 105390756A CN 201510817550 A CN201510817550 A CN 201510817550A CN 105390756 A CN105390756 A CN 105390756A
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- Prior art keywords
- sodium
- battery
- solid electrolyte
- earthenware
- metal
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- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 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 abstract description 72
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 72
- 239000011734 sodium Substances 0.000 claims abstract description 72
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000919 ceramic Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 13
- 239000011593 sulfur Substances 0.000 claims abstract description 13
- 229910052571 earthenware Inorganic materials 0.000 claims description 66
- 239000007784 solid electrolyte Substances 0.000 claims description 49
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims description 47
- 238000007789 sealing Methods 0.000 claims description 18
- 239000011148 porous material Substances 0.000 claims description 9
- 238000004146 energy storage Methods 0.000 abstract description 7
- 239000013543 active substance Substances 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 abstract 6
- 239000003792 electrolyte Substances 0.000 abstract 2
- 210000000352 storage cell Anatomy 0.000 abstract 1
- 239000005864 Sulphur Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000011149 active material Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000009736 wetting Methods 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
-
- 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
- H01M10/38—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/138—Primary casings, jackets or wrappings of a single cell or a single battery adapted for specific cells, e.g. electrochemical cells operating at high temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/1535—Lids or covers characterised by their shape adapted for specific cells, e.g. electrochemical cells operating at high temperature
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a safe sodium-sulfur cell and belongs to the technical field of energy storage cells. Metal sodium is stored in a sodium storage tank of the cell; the bottom of the sodium storage tank is connected with an insulated ceramic ring; the bottom of the insulated ceramic ring is connected with the top of a solid-state electrolyte ceramic pipe; and the outer wall of the insulated ceramic ring is connected with the inner wall of a cell shell through a metal connecting piece. According to the safe sodium-sulfur cell, the sodium storage tank is arranged above the solid-state electrolyte ceramic pipe, so that when the ceramic pipe in the cell is destructed, the possibility of instant strong reaction of metal sodium and sulfur can be reduced, complete appearance of the cell is kept, and the leakage and ignition of active substances are avoided.
Description
Technical field
The present invention relates to a kind of battery, more particularly, the present invention relates to a kind of safe sodium-sulphur battery, belong to energy-storage battery technical field.
Background technology
Sodium-sulphur battery is owing to having the features such as high-energy-density, long life, abundant raw materials by one of technology as extensive electrochemical energy storage, and the research and development of sodium-sulphur battery in recent years, pilot scale, engineering mimoir and business promotion receive extensive concern.The fail safe of sodium-sulphur battery is the problem that in its large gauge industry development process, attention Buddhist monk is to be further improved.The fail safe of sodium-sulphur battery needs by improving cell fail safe and module and many-sided common improvement such as energy-storage system design and control device, wherein the fail safe of cell be affect energy-storage system fail safe to pass factor.Sodium-sulphur battery main active substances is sodium metal and elemental sulfur, earthenware is the solid electrolyte of conducts sodium ions at inside battery, also be the solid membrane that sodium and sulphur content are left, after under the working temperature of 300-350 DEG C, the potential safety hazard of cell is mainly that earthenware breaks by external action or self structure defect, the sodium metal of melting is not having to contact in a large number in barrier film situation with sulphur, and a large amount of heat energy of vigorous reaction abrupt release, destroy battery metal structural member, even cause active material to leak, catch fire, the problem such as battery short circuit.
NGK Insulators Ltd and Shanghai Electric Sodium-Sulfur Energy Storage Technology Co., Ltd. are the main enterprises of domestic and international sodium-sulphur battery technological development, and in its patent announced, sodium-sulphur battery is all the structure container storing sodium metal being positioned over the ceramic tube inside in battery:
The patent of the sodium-sulphur battery configuration aspects that NGK Insulators Ltd announces mainly comprises six patents that Authorization Notice No. is CN202423498U, CN202423500U, CN202423501U, CN202352789U, CN202534748U, CN202534703U, involved sodium-sulphur battery structure is all be placed in the earthenware of inside battery by sodium container and sodium metal, in sodium metal is contained in by sodium container; Aperture is opened bottom container; protective gas nitrogen or the argon gas of certain air pressure are filled in top; can flow out from container after guaranteeing sodium metal melting and to fill the gap between container and earthenware; by the speed that orifice size control sodium metal flows out from container; sodium metal and sulphur fast reaction when breaking to prevent earthenware and a large amount of heat energy of abrupt release, cause catch fire, battery case destruction, the safety problem such as battery short circuit.
The patent of the sodium-sulphur battery configuration aspects that Shanghai Electric Sodium-Sulfur Energy Storage Technology Co., Ltd. announces mainly comprises three patents of invention that Shen Qing Publication announcement is CN103500855A, CN103531856A, mandate publication No. is CN102610867B, and involved sodium-sulphur battery structure is all " the safe core of sodium " or " storage sodium pipe " and sodium metal are placed in the earthenware of inside battery.
Sodium-sulphur battery in above-mentioned existing patent is all be arranged in the earthenware of inside battery by the container of sodium metal and storage sodium metal, sulfur electrode is peripheral at earthenware, after breaking to avoid earthenware, a large amount of sodium metal moment contacts with sulphur and vigorous reaction occurs, this is the existing scheme controlling cell fail safe, and still likely the storage sodium container destroyed in earthenware causes a large amount of sodium metal moment contact with sulphur and vigorous reaction occurs in severe case.At the sodium-sulphur battery research and development initial stage, sodium-sulphur battery is mainly considered as electric automobile power battery, sodium metal and container thereof is placed in inside battery and is conducive to preventing from clashing into and causing sodium metal to overflow safety problems such as catching fire; Current sodium-sulphur battery is mainly considered as the large-scale energy storage system application of stationary applica-tions, directly cause the possibility destroyed to reduce by external impact after cell comprising modules, battery causes the safe coefficient in destruction situation to become the leading factor of battery safety with the increase of discharge and recharge number of times.
Summary of the invention
The present invention is intended to solve prior art and stores the unsafe problem of structure that the container of sodium metal is positioned over the ceramic tube inside in battery, a kind of safe sodium-sulphur battery is provided, make when the earthenware of inside battery occurs to destroy, the possibility of sodium metal and sulphur moment vigorous reaction can be reduced, keep outside batteries complete, avoid active material to leak, catch fire.
To achieve these goals, the technical scheme that the present invention is concrete is as follows:
A kind of safe sodium-sulphur battery, comprise storage sodium tank, battery case and solid electrolyte earthenware, it is characterized in that: in described storage sodium tank, deposited sodium metal, the bottom of described storage sodium tank is connected with insulating ceramics ring, the bottom of described insulating ceramics ring connects the top of described solid electrolyte earthenware, and the outer wall of described insulating ceramics ring is connected by the inwall of metal connecting piece with described battery case; The inside of described solid electrolyte earthenware is provided with negative current collector, and the top of described negative current collector is connected with described storage sodium tank; The bottom of described storage sodium tank is provided with the pore channels of inclination, the sodium metal of described storage sodium tank inside and described solid electrolyte earthenware is communicated with the gap between described negative current collector; Between described battery case and described solid electrolyte earthenware, sulfur electrode is set.
The width in the gap between solid electrolyte earthenware of the present invention and described negative current collector is 0.5-3mm.
The top of storage sodium tank of the present invention is provided with the battery cap for sealing metal sodium.
The bottom of battery case of the present invention is provided with the battery bottom for sealing sulfur electrode.
The upper end open of solid electrolyte earthenware of the present invention, lower end is the round bottom or flat of sealing.
The Advantageous Effects that the present invention brings:
Contrast sodium-sulphur battery structure of the prior art, the structure that existing sodium metal and storage sodium container are placed in ceramic tube inside by the present invention becomes sodium metal and storage sodium container is placed in beyond earthenware, the structure of battery top, and such structure has the advantage of two aspects:
1, cell safety can be ensured further.After in prior art, the earthenware of sodium-sulphur battery destroys, sodium and sulphur local fast reaction still likely destroy the storage sodium container of next-door neighbour's earthenware, cause a large amount of sodium metal contact with sulphur and react, discharge amount of heat fast; Especially store up sodium container when certain air pressure, easier extrusion by motlten metal sodium stores up sodium container, with sulphur fast reaction, destroys storage sodium container even battery case.The present invention is owing to being placed in more than solid electrolyte earthenware by sodium metal and storage sodium tank, even if still can ensure that under solid electrolyte earthenware rupture event storage sodium container is not damaged easily, sodium metal slowly can only flow out from storage sodium tank and react with the sulphur of inside battery, thus the speed of speed and the release heat of reacting can be controlled, avoid the too fast rising of battery temperature, serious problems such as leaking and catch fire occur.
2, take into account safe while can ensure the conveying of sodium metal in battery discharge procedure, to the velocity of discharge and the degree of depth favourable.In prior art, sodium metal is placed in the storage sodium container of ceramic tube inside, along with the carrying out of discharge process, sodium metal causes liquid level constantly to decline by storing up the outflow of sodium container, it is more and more difficult that whole gaps of completely storing up between sodium container and earthenware filled by sodium metal, must by strict air pressure control and capillary force can ensure sodium metal to the covering on earthenware surface and soak, otherwise will be forced to reduce the velocity of discharge and the degree of depth, this causes in production process earthenware size, storage sodium container inner and outer air pressure controls, the control of capillary force has very high requirement, the success rate of assemble battery and battery homogeneity have considerable influence.The present invention is owing to being placed in more than solid electrolyte earthenware by sodium metal and storage sodium tank, only the gap between solid electrolyte earthenware and negative current collector need can be filled up the moment by pore channels outflow storage sodium tank under gravity after sodium metal melting, ensure sodium metal in discharge process timely supply and to the covering on solid electrolyte earthenware surface with wetting, more easily keep the speed of discharging and the degree of depth.
Accompanying drawing explanation
Fig. 1 is the safe sodium-sulphur battery structural representation of the present invention;
Fig. 2 is the present invention's safe sodium-sulphur battery partial structurtes enlarged diagrams;
Fig. 3 is 325Ah sodium-sulphur battery battery case temperature changing curve diagram when solid electrolyte earthenware destroys of the safe sodium-sulphur battery structure of the present invention.
Reference numeral: 1 be solid electrolyte earthenware for storage sodium tank, 2 be battery case, 3,4 be sodium metal, 5 be insulating ceramics ring, 6 be metal connecting piece, 7 be negative current collector, 8 be pore channels, 9 be sulfur electrode, 10 be battery cap, 11 be battery bottom.
Embodiment
embodiment 1
A kind of safe sodium-sulphur battery, comprise storage sodium tank 1, battery case 2 and solid electrolyte earthenware 3, sodium metal 4 has been deposited in described storage sodium tank 1, the bottom of described storage sodium tank 1 is connected with insulating ceramics ring 5, the bottom of described insulating ceramics ring 5 connects the top of described solid electrolyte earthenware 3, and the outer wall of described insulating ceramics ring 5 is connected with the inwall of described battery case 2 by metal connecting piece 6; The inside of described solid electrolyte earthenware 3 is provided with negative current collector 7, and the top of described negative current collector 7 is connected with described storage sodium tank 1; The bottom of described storage sodium tank 1 is provided with the pore channels 8 of inclination, the described sodium metal 4 of storage sodium tank 1 inside and the gap between described solid electrolyte earthenware 3 with described negative current collector 7 is communicated with; Between described battery case 2 and described solid electrolyte earthenware 3, sulfur electrode 9 is set.
Described negative current collector 7 is the size tubing more smaller than solid electrolyte earthenware 3 internal diameter or bar, and material is aluminium, steel or the electric conducting material such as copper, alloy; It is inner that described negative current collector 7 is placed in solid electrolyte earthenware 3, and upper end is connected with storage sodium tank 1; Described sodium metal 4 is contained in storage sodium tank 1, in discharge process, motlten metal sodium 4 is flowed out by the pore channels 8 bottom storage sodium tank 1 and is filled the gap between solid electrolyte earthenware 3 and negative current collector 7, the rate of outflow is subject to pore channels 8 size Control (according to charge/discharge rates, namely the flow velocity that sodium metal needs arranges its size), flow back into by pore channels 8 after sodium metal 4 enters between solid electrolyte earthenware 3 and negative current collector 7 gap by solid electrolyte earthenware 3 in charging process and store up in sodium tank 1.
embodiment 2
On the basis of embodiment 1:
Preferably, the width in the gap between described solid electrolyte earthenware 3 and described negative current collector 7 is 0.5mm.
Preferably, the top of described storage sodium tank 1 is provided with the battery cap 10 for sealing metal sodium 4.
Preferably or further, the bottom of described battery case 2 is provided with the battery bottom 11 for sealing sulfur electrode 9.
Preferably, the upper end open of described solid electrolyte earthenware 3, lower end is the round bottom or flat of sealing.
embodiment 3
On the basis of embodiment 1:
Preferably, the width in the gap between described solid electrolyte earthenware 3 and described negative current collector 7 is 3mm.
Preferably, the top of described storage sodium tank 1 is provided with the battery cap 10 for sealing metal sodium 4.
Preferably or further, the bottom of described battery case 2 is provided with the battery bottom 11 for sealing sulfur electrode 9.
Preferably, the upper end open of described solid electrolyte earthenware 3, lower end is the round bottom or flat of sealing.
embodiment 4
On the basis of embodiment 1:
Preferably, the width in the gap between described solid electrolyte earthenware 3 and described negative current collector 7 is 1.8mm.
Preferably, the top of described storage sodium tank 1 is provided with the battery cap 10 for sealing metal sodium 4.
Preferably or further, the bottom of described battery case 2 is provided with the battery bottom 11 for sealing sulfur electrode 9.
Preferably, the upper end open of described solid electrolyte earthenware 3, lower end is the round bottom or flat of sealing.
embodiment 5
On the basis of embodiment 1:
Preferably, the width in the gap between described solid electrolyte earthenware 3 and described negative current collector 7 is 2.1mm.
Preferably, the top of described storage sodium tank 1 is provided with the battery cap 10 for sealing metal sodium 4.
Preferably or further, the bottom of described battery case 2 is provided with the battery bottom 11 for sealing sulfur electrode 9.
Preferably, the upper end open of described solid electrolyte earthenware 3, lower end is the round bottom or flat of sealing.
embodiment 6
Fig. 1 is the safe sodium-sulphur battery structural representation of structure of the present invention, and wherein solid electrolyte earthenware 3, storage sodium tank 1, battery case 2 are all connected by ceramic insulation ring 5, the battery that composition both positive and negative polarity separates.Its main feature is that most sodium metal 4 is all stored in the storage sodium tank 1 of battery top, the pore channels 8 being 1mm by two apertures bottom storage sodium tank 1 after sodium metal 4 melting flows out, and fill full gap between negative current collector 7 and solid electrolyte earthenware 3, solid electrolyte earthenware 3 inner surface can be kept to have sufficient sodium to cover always, meet normal discharge and recharge needs, the amount of the sodium metal 4 that directly can contact with the elemental sulfur in sulfur electrode 9 after solid electrolyte earthenware 3 breaks is controlled again by gap length, and the storage sodium tank 1 at top can be protected not easily by heat damage.
Fig. 3 is 325Ah battery in kind battery surface temperature variation curve after earthenware destroys.In Fig. 3, the representative of DEC2A-100 battery is with a sodium-sulphur battery example of structure assembling of the present invention.Described DEC2A-100 battery case surface binding K type thermocouple, both positive and negative polarity surface connects electric current and voltage tester line, puts into after holding furnace is warming up to 350 DEG C and starts discharge and recharge.Once charge normal to close to charging latter stage time this cell voltage decline fast, and it is complete that rear outside batteries is taken out in cooling, No leakage and seal break-off situation, this is that in battery, solid electrolyte earthenware 3 destroys the obvious characteristic causing losing efficacy, and monitors the safe coefficient that its front and back battery surface temperature variations that lost efficacy can reflect battery.T1 shown in Fig. 3 is battery case medium height position point for measuring temperature gained temperature data, T2 is battery case top (flowing out point from storage sodium tank close to sodium metal) position point for measuring temperature gained temperature data, by data in figure can find out solid electrolyte earthenware 3 destroy after this battery surface temperature raise about 20 DEG C by normal working temperature, maximum temperature is at about 380 DEG C, the temperature of this process raises, and heat that to be sodium metal 4 after being broken by solid electrolyte earthenware 3 between solid electrolyte earthenware 3 and negative current collector 7 in gap discharge with the direct haptoreaction of sulphur caused, along with this part metals sodium 4 is exhausted fast, battery temperature declines gently, then rises to about 400 DEG C for twice, and it is caused by the slow outflow of sodium metal 4 in storage sodium tank 1 and the reaction of Salmon-Saxl release heat below it that the temperature of this process raises.About 50 DEG C are only had by adopting the sodium-sulphur battery of structure of the present invention battery surface temperature after solid electrolyte earthenware 3 destroys to raise in this example, battery structure part is not formed and destroy, do not cause active material to leak and the problem such as to catch fire, embody very high fail safe.
Claims (5)
1. a safe sodium-sulphur battery, comprise storage sodium tank (1), battery case (2) and solid electrolyte earthenware (3), it is characterized in that: in described storage sodium tank (1), deposited sodium metal (4), the bottom of described storage sodium tank (1) is connected with insulating ceramics ring (5), the bottom of described insulating ceramics ring (5) connects the top of described solid electrolyte earthenware (3), and the outer wall of described insulating ceramics ring (5) is connected with the inwall of described battery case (2) by metal connecting piece (6); The inside of described solid electrolyte earthenware (3) is provided with negative current collector (7), and the top of described negative current collector (7) is connected with described storage sodium tank (1); The bottom of described storage sodium tank (1) is provided with the pore channels (8) of inclination, and the sodium metal (4) inner by described storage sodium tank (1) and the gap between described solid electrolyte earthenware (3) with described negative current collector (7) are communicated with; Sulfur electrode (9) is set between described battery case (2) and described solid electrolyte earthenware (3).
2. the safe sodium-sulphur battery of one according to claim 1, is characterized in that: the width in the gap between described solid electrolyte earthenware (3) and described negative current collector (7) is 0.5-3mm.
3. the safe sodium-sulphur battery of one according to claim 1, is characterized in that: the top of described storage sodium tank (1) is provided with the battery cap (10) for sealing metal sodium (4).
4. the safe sodium-sulphur battery of the one according to claim 1 or 3, is characterized in that: the bottom of described battery case (2) is provided with the battery bottom (11) for sealing sulfur electrode (9).
5. the safe sodium-sulphur battery of one according to claim 1, is characterized in that: the upper end open of described solid electrolyte earthenware (3), and lower end is the round bottom or flat of sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510817550.7A CN105390756B (en) | 2015-11-23 | 2015-11-23 | A kind of safe sodium-sulphur battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510817550.7A CN105390756B (en) | 2015-11-23 | 2015-11-23 | A kind of safe sodium-sulphur battery |
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| Publication Number | Publication Date |
|---|---|
| CN105390756A true CN105390756A (en) | 2016-03-09 |
| CN105390756B CN105390756B (en) | 2018-01-12 |
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| CN201510817550.7A Active CN105390756B (en) | 2015-11-23 | 2015-11-23 | A kind of safe sodium-sulphur battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711464A (en) * | 2017-01-20 | 2017-05-24 | 江南山 | Multi-tube type sodium and sulfur battery |
| CN106711465A (en) * | 2017-01-20 | 2017-05-24 | 江南山 | Composite negative-pole tube for battery |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201829578U (en) * | 2010-10-09 | 2011-05-11 | 秦磊 | Horizontal sodium-sulfur battery device |
| CN102906929A (en) * | 2010-05-25 | 2013-01-30 | 株式会社人工资源研究所 | Solid-electrolyte secondary battery |
| CN103123986A (en) * | 2012-12-12 | 2013-05-29 | 上海电气钠硫储能技术有限公司 | Security structure for sodium-sulfur battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106711464A (en) * | 2017-01-20 | 2017-05-24 | 江南山 | Multi-tube type sodium and sulfur battery |
| CN106711465A (en) * | 2017-01-20 | 2017-05-24 | 江南山 | Composite negative-pole tube for battery |
| CN106711464B (en) * | 2017-01-20 | 2023-07-21 | 江南山 | Multitube sodium-sulfur battery |
| CN106711465B (en) * | 2017-01-20 | 2023-07-21 | 江南山 | Composite negative electrode tube for battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105390756B (en) | 2018-01-12 |
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Effective date of registration: 20180830 Address after: 610000 Sichuan Chengdu high tech Zone (West District) west core Road No. 18 Patentee after: Dongfang Electric Energy Technology Chengdu Co., Ltd. Address before: 610036 Shu Han Road, Jinniu District, Chengdu, Sichuan Province, No. 333 Patentee before: Dongfang Electric Corporation |