CN106252747A - A kind of shell structure for liquid metal cell and preparation method thereof - Google Patents
A kind of shell structure for liquid metal cell and preparation method thereof Download PDFInfo
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- CN106252747A CN106252747A CN201610785391.1A CN201610785391A CN106252747A CN 106252747 A CN106252747 A CN 106252747A CN 201610785391 A CN201610785391 A CN 201610785391A CN 106252747 A CN106252747 A CN 106252747A
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- earthenware
- metab
- liquid metal
- shell structure
- metal cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/39—Accumulators not provided for in groups H01M10/05-H01M10/34 working at high temperature
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of shell structure for liquid metal cell and preparation method thereof, shell structure includes earthenware, the metab as positive pole and the casting coping as negative pole, and the two ends of earthenware are connected the battery case structure forming sealing respectively with metab and casting coping.The present invention solves the chemical compatibility between the sealing of liquid metal cell housing, the insulation of positive and negative interpolar, housing and battery active material and the technical problem of the physical and chemical stability in battery storing and temperature range of operation.
Description
Technical field
The invention belongs to liquid metal cell technical field, particularly to a kind of shell structure for liquid metal cell
And preparation technology.
Background technology
Currently, China's electrical network faces regenerative resource and accesses that accounting constantly expands, NETWORK STRUCTURE PRESERVING POWER SYSTEM is day by day complicated, electrical network
The lot of challenges such as load peak-valley difference continues to increase.And high-quality, spontaneous recovery, safe and clean, economical, interactive be China's intelligent grid
Target setting.The especially extensive energy storage technology of energy storage technology regenerative resource of dissolving, improve stability of power system and
Meet the aspects such as electrical network peak load shifting demand and there is important function, thus be to build the key that modern intelligent grid is indispensable
Link.Power energy storage technology mainly includes physics energy storage and chemical energy storage two class.Wherein, physics energy storage mainly includes that flywheel stores up
Energy, water-storage, compressed-air energy storage, double layer capacitor energy storage and super conductive magnetic storage energy.Chemical energy storage mainly includes
Pseudo capacitance energy storage and all kinds of battery energy storage.It is high that battery energy storage has energy conversion rate, and the advantages such as mounting condition is low are subject to
Arrive the extensive concern of people.
Liquid metal cell is the novel secondary battery towards electrical network level stored energy application, monomer whose mainly by positive pole, negative pole,
Electrolyte and battery case composition.Battery cathode is generally alkali metal or the simple substance of alkaline-earth metal or alloy, and positive pole is generally
Alloy can be formed with negative pole and have the transition metal simple substance of certain electric potential difference, alloy or other compound with negative pole.Electrolyte is
The inorganic salt corresponding with negative metal or its mixture.When battery operation, its metal electrode and inorganic salt electrolyte are at high temperature
Under melt as liquid, and according to density variation AUTOMATIC ZONING.During electric discharge, negative metal loses electronics, and is done work by external circuit.
After negative metal ionizing by fused salt move to positive pole and with cathode metal alloying.During charging, battery performs contrary mistake
Journey.By above-mentioned alloying and removal alloying process, liquid metal cell can complete storage and the release of electric energy, it is achieved with
Outside energy exchange.
Liquid metal cell needs at high temperature to work, the temperature related to typically ambient temperature～700 DEG C or higher,
So that the active component in battery keeps liquid.At normal temperatures, liquid metal cell cannot work, and reason is now electricity
The active component in pond is to also exist in solid form, it is impossible to carry out the exchange of ion-electron.Only the temperature of battery is improved extremely
More than its operating temperature just can carry out discharge and recharge.In temperature changing process, active substance undergoes phase transition, and bring is not only
The change of thing phase, can produce huge change in volume simultaneously.Therefore, liquid metal cell entirety under room temperature and hot conditions
Seal, keep active substance not reveal, do not become flat it is critical that crucial technical problem.
Liquid metal cell at high temperature works, and to keep being dielectrically separated between positive and negative electrode layering, could allow at it
In the case of, carrying out discharge and recharge according to the path of regulation, the most interelectrode insulation becomes crucial technical problem.
In battery storing and running, battery container can not be with inside battery material, internal gas and battery ambient
Gas generation chemical reaction in environment.This is because, on the one hand, occur chemical reaction to be likely to result in the corrosion of housing, make
Become the leakage of inside battery active material, thus cause battery failure even to jeopardize environment；On the other hand, occur with internal material
Chemical reaction, can cause the rotten of inside battery active material, and the decline being likely to result in battery performance was even lost efficacy.Therefore protect
Hold housing deposit and physical and chemical stability in running it is critical that.
Carry out new structural design for liquid metal cell, solve liquid metal cell at ambient and elevated temperatures close
Envelope, insulation, to keep the physics and chemistry in battery storing and running stable, we have proposed new battery structure and sealed insulation
Technology.
Existing Sealing Technology mainly has compression seal technology and adhesive technology.Conventional compression seal technology passes through metal
Between be directly connected to or use bubble-tight elastomeric material to realize: intermetallic being directly connected to is difficulty with being tightly connected two
Electrical insulating property between individual parts；The general heat stability of bubble-tight elastomeric material is poor, such as the tolerance of conventional silica gel sealing material
Temperature is usually no more than 200 DEG C.Bonding technology is typically with high temperature resistant, insulating ceramics as binding agent, but between pottery and metal, heat is swollen
Swollen coefficients match is poor, thus be difficult to meet liquid metal cell run needs steadily in the long term.
Existing liquid metal cell uses Stainless Steel Shell, it is impossible to directly solve being dielectrically separated from of electrode, needs to increase
Insulating barrier, structure is complicated.
Summary of the invention
It is an object of the invention to provide a kind of shell structure for liquid metal cell and preparation method thereof, solve liquid
Chemical compatibility between the sealing of state metal battery case, the insulation of positive and negative interpolar, housing and battery active material and at electricity
Pond is deposited and the technical problem of the physical and chemical stability in temperature range of operation.
For solving the problems referred to above, the technical scheme that the present invention takes is:
A kind of shell structure for liquid metal cell, including earthenware, as the metab of positive pole with as negative
The casting coping of pole, the two ends of earthenware are connected the battery case structure forming sealing respectively with metab and casting coping.
The positive pole electric current exit of described metab forms groove, and the cathodal current exit of casting coping is formed convex
Rising, described projection and the size of groove are mutually matched.
Described earthenware, metab and casting coping use cylinder or rectangular structure；Described groove is arranged
At the center of metab, projection is arranged on the center of casting coping；Earthenware, metab and casting coping are coaxially disposed.
When two liquid metal cells connect, the metab electric current exit of any battery embeds the gold of another battery
Belonging to top cover electric current exit to conduct electricity, two ends battery current directly leads out.
Also including metal transfer parts, the two ends ceramic metallization of described earthenware passes through a metal after processing respectively
Transition member is welded with metab and casting coping.
The two ends of described earthenware are all welded with metab and casting coping by glass solder.
The material of described earthenware is C700 class aluminium oxide ceramics or βAl2O3 pottery；Metab and casting coping
Material is rustless steel or copper.
The preparation method of a kind of shell structure for liquid metal cell, comprises the following steps:
1) earthenware both ends of the surface carry out ceramic metallization；
2) respectively metal transfer parts are welded on the earthenware two ends through ceramic metallization, metal transfer parts and pottery
Porcelain tube is coaxially disposed；
3) being welded with the metal transfer parts sealing of lower end by metab, metab is coaxially disposed with earthenware；
4), after the charging of liquid metal cell active component, casting coping and upper end metal transfer parts are sealed welding, gold
Belong to top cover to be coaxially disposed with earthenware, form the shell structure for liquid metal cell.
The preparation method of a kind of shell structure for liquid metal cell, comprises the following steps:
1) using glass solder to be sealed with earthenware one end by metab to weld, metab coaxially sets with earthenware
Put；
2), after the charging of liquid metal cell active component, use glass solder by metab and the seal weld of earthenware one end
Connecing, metab is coaxially disposed with earthenware, forms the shell structure for liquid metal cell.
Relative to prior art, the method have the advantages that
This battery case structure is sealed against each other by earthenware, the metab as positive pole and the casting coping as negative pole
Connect and compose, solve the sealing problem of liquid metal cell housing；Earthenware is used can directly to solve the exhausted of positive and negative electrode
Edge is isolated, it is not necessary to increases the complicated structures such as insulating barrier, solves the Insulation Problems of positive and negative interpolar.And the resistance to height of earthenware
Temperature excellent performance, operating temperature can bear more than 450 DEG C, and charge and discharge cycles is good, the change between housing and battery active material
Learn the compatibility and the physical chemistry in battery storing and temperature range of operation is stable.This structure can simplify liquid metal cell
Housing preparation technology, reduce volume, beneficially the thermal control in running, thus save processing, space, energy cost.
Further, it is tightly connected by welding procedure between earthenware, metab and casting coping, this Welder's artistic skill
Enough physical and chemical stabilities effectively solved in the sealing of liquid metal cell, positive and negative electrode insulation and battery storing and running
Deng crucial technical problem.
Further, the positive pole electric current exit of metab forms groove, and the cathodal current exit of casting coping is formed
Projection, can have only to carry out embedding cooperation from beginning to end during the connection of multiple batteries, it is achieved that the current lead-through of both positive and negative polarity.Decrease existing
The step of cabling that connected by wire of battery, battery connects simpler.
The preparation method of the present invention uses welding procedure to be tightly connected, welding procedure be ceramic metallization welding procedure or
Carry out welding procedure with glass solder, prepare the liquid metal cell that can stablize discharge and recharge.
Accompanying drawing explanation
Fig. 1 is that liquid metal cell encapsulates schematic diagram；
Fig. 2 is that Fig. 1 is along A-A sectional view；
Fig. 3 is earthenware schematic diagram；
Fig. 4 is battery metal base (positive pole) schematic diagram；
Fig. 5 is battery metal top cover (negative pole) schematic diagram；
Fig. 6 is metal transfer block diagram；
Fig. 7 is battery charging and discharging curve synoptic diagram.
Wherein: 1, earthenware；2, metab；3, casting coping；4, metal transfer parts；5, protruding；6, groove.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, respectively with apparatus structure and method, in the embodiment of the present invention
Technical scheme is clearly and completely described.
Part I: apparatus structure
As shown in Figures 1 to 6, one liquid metal cell of the present invention, containing earthenware 1, metab 2 and in shell mechanism
Casting coping 3.Metab 2 and casting coping 3 are coaxially disposed with earthenware 1.The two ends of earthenware 1 respectively with metab 2
Weld with casting coping 3.The electric current exit of metab 2 forms groove 6, and the electric current exit of casting coping is formed convex
Play 5, and groove 6 must match each other with protruding 5, can bearing the positive pole of any battery and another battery when two batteries connect
Pole is mated, it is ensured that well conducting.
Earthenware 1, metab 2, casting coping 3 can use cylinder or rectangular structure, but need to keep consistent
And there is matching.
Wherein, ceramic matrix material is selected from C700 class aluminium oxide ceramics (referring to GB/T 8411.3-2009), βAl2O3 pottery
Porcelain and other refractory ceramicses etc..
Metab 2 and casting coping 3 material select the high temperature resistant high-conductive metal such as rustless steel, copper.
Using the battery structure of the present invention, the positive and negative interpolar of battery has the earthenware with insulating properties to be separated by, it is achieved that just
The good insulation of negative pole.Use ceramic metalizing process, firmly adhered to layer of metal thin film by ceramic surface, make metallization
After ceramic surface can obtain the abundant moistening of solder, thus realize ceramic and intermetallic be reliably connected, reaching to seal, resistance to
High temperature, etch-proof function.
Part II: preparation method
In the preparation method of the present invention, welding procedure is ceramic metallization welding procedure or welds with glass solder
Technique.Specific as follows:
Method one: refer to Fig. 1-6, the liquid metal cell that the present invention provides carries out assembly processing as illustrated, uses
Battery plus-negative plate is welded together by ceramic metalizing process respectively with earthenware；First, Fig. 3 cell ceramic tube both ends of the surface are entered
Row ceramic metallization；Fig. 6 metal transfer parts 4 are welded on Fig. 3 battery having carried out ceramic metallization by second step respectively
Earthenware two ends, coaxial with the cell ceramic tube of Fig. 3；3rd step, by Fig. 4 battery metal base (positive pole) and bottom metal transition
Parts weld together, coaxial with Fig. 3 cell ceramic tube；4th step, feeds according to liquid metal cell active component；Finally,
Integrally welded by sealing at Fig. 5 battery metal top cover and upper end metal transfer component contact, coaxial with Fig. 3 cell ceramic tube.
Complete the encapsulation of Fig. 1 liquid metal cell.
Different according to material therefor, including: molybdenum manganese method, gold-plated method, copper-plating method, tin plating method, LAP method (metal-plated after laser)
Etc. multiple ceramic metalizing process；Different according to processing method, farther include: thick film and burn method altogether.
Method two: refer to Fig. 1-6, the liquid metal cell that the present invention provides carries out assembly processing as illustrated, uses
The both positive and negative polarity of battery is welded together by glass solder respectively with ceramic cartridge；First, use glass solder by Fig. 4 battery metal
Base (positive pole) welds together with one end of Fig. 3 cell ceramic tube, coaxial with Fig. 3 cell ceramic tube, it is ensured that seal；Second
Step, feeds according to liquid metal cell active component；3rd step, uses glass solder by Fig. 5 battery metal top cover and Fig. 3 battery
The earthenware other end is integrally welded, it is ensured that seal.Complete the encapsulation of Fig. 1 liquid metal cell.
Welding with glass solder, this glass solder is capable of pottery and welds with the effective of metal, can after welding
Keeping sealing in room temperature to operating temperature range, physicochemical property is stable, it is possible to resistance to ceramic and intermetallic thermal stress, and keeps
And the chemical compatibility between inside battery active material.
Part III:
Using battery structure of the present invention and welding procedure, its performance is as it is shown in fig. 7, prepared and can stablize charge and discharge
The liquid metal cell of electricity.The parameters index of liquid metals battery can be met.
Part IV:
Enumerate various embodiment and be shown in Table 1:
Table 1
As can be seen from the above table, the battery case structure that the present invention is prepared by two kinds of methods respectively, favorable sealing property,
Operating temperature can reach 450 DEG C, charging, discharge cycles smooth.Meet indices requirement.Solve housing and battery-active
The chemical compatibility of storeroom and the technical problem of the physical and chemical stability in battery storing and temperature range of operation.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change that can readily occur in or replacement,
All should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be as the criterion.
Claims (9)
1. the shell structure for liquid metal cell, it is characterised in that: include earthenware (1), metal as positive pole
Base (2) and be used as negative pole casting coping (3), the two ends of earthenware (1) respectively with metab (2) and casting coping (3)
Connect and form the battery case structure sealed.
A kind of shell structure for liquid metal cell the most according to claim 1, it is characterised in that: described metal
The positive pole electric current exit of base (2) forms groove (6), and the cathodal current exit of casting coping (3) forms projection (5), institute
The projection (5) stated and the size of groove (6) are mutually matched.
A kind of shell structure for liquid metal cell the most according to claim 2, it is characterised in that: described pottery
Pipe (1), metab (2) and casting coping (3) use cylinder or rectangular structure；Described groove (6) is arranged on metal
The center of base (2), protruding (5) are arranged on the center of casting coping (3)；Earthenware (1), metab (2) and casting coping
(3) it is coaxially disposed.
A kind of shell structure for liquid metal cell the most according to claim 3, it is characterised in that: when two liquid
When metal battery connects, metab (2) the electric current exit of any battery embeds casting coping (3) electric current of another battery and draws
Going out end to conduct electricity, two ends battery current directly leads out.
5. according to a kind of shell structure for liquid metal cell described in claim 1 or 2 or 3, it is characterised in that: also wrap
Including metal transfer parts (4), the two ends ceramic metallization of described earthenware (1) passes through a metal transfer portion after processing respectively
Part (4) welds with metab (2) and casting coping (3).
6. according to a kind of shell structure for liquid metal cell described in claim 1 or 2 or 3, it is characterised in that: described
The two ends of earthenware (1) all welded with metab (2) and casting coping (3) by glass solder.
7. according to a kind of shell structure for liquid metal cell described in claim 1 or 2 or 3, it is characterised in that: described
The material of earthenware (1) be C700 class aluminium oxide ceramics or βAl2O3 pottery；Metab (2) and casting coping (3) material
For rustless steel or copper.
8. the preparation method for the shell structure of liquid metal cell, it is characterised in that comprise the following steps:
1) earthenware (1) both ends of the surface carry out ceramic metallization；
2) respectively metal transfer parts (4) are welded on earthenware (1) two ends through ceramic metallization, metal transfer parts
(4) it is coaxially disposed with earthenware (1)；
3) being welded with metal transfer parts (4) sealing of lower end by metab (2), metab (2) is coaxial with earthenware (1)
Arrange；
4), after the charging of liquid metal cell active component, casting coping (3) and upper end metal transfer parts (4) are sealed welding,
Casting coping (3) is coaxially disposed with earthenware (1), forms the shell structure for liquid metal cell.
9. the preparation method for the shell structure of liquid metal cell, it is characterised in that comprise the following steps:
1) use glass solder to be sealed with earthenware (1) one end by metab (2) to weld, metab (2) and earthenware (1)
It is coaxially disposed；
2), after the charging of liquid metal cell active component, glass solder is used to be sealed with earthenware (1) one end by metab (2)
Welding, metab (2) is coaxially disposed with earthenware (1), forms the shell structure for liquid metal cell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610785391.1A CN106252747B (en) | 2016-08-30 | 2016-08-30 | A kind of shell structure and preparation method thereof for liquid metal cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610785391.1A CN106252747B (en) | 2016-08-30 | 2016-08-30 | A kind of shell structure and preparation method thereof for liquid metal cell |
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| CN106252747A true CN106252747A (en) | 2016-12-21 |
| CN106252747B CN106252747B (en) | 2018-12-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109449318A (en) * | 2018-10-15 | 2019-03-08 | 大连中比动力电池有限公司 | A kind of cylindrical battery configuration and preparation method of non-metal shell |
| CN113707952A (en) * | 2021-08-02 | 2021-11-26 | 大连理工大学 | Circular-section liquid metal battery with grid device for inhibiting fluid instability |
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| US20140099522A1 (en) * | 2012-10-05 | 2014-04-10 | Massachusetts Institute Of Technology | Low-Temperature Liquid Metal Batteries for Grid-Scaled Storage |
| CN104124459A (en) * | 2014-07-22 | 2014-10-29 | 西安交通大学 | Square liquid metal battery device and assembling method thereof |
| WO2015042295A1 (en) * | 2013-09-18 | 2015-03-26 | Ambri Inc. | Unified structural and electrical interconnections for high temperature batteries |
| CN204289603U (en) * | 2014-12-12 | 2015-04-22 | 芶富均 | A kind of liquid metal cell device |
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| US20140099522A1 (en) * | 2012-10-05 | 2014-04-10 | Massachusetts Institute Of Technology | Low-Temperature Liquid Metal Batteries for Grid-Scaled Storage |
| CN103259004A (en) * | 2013-04-16 | 2013-08-21 | 华中科技大学 | Anode material for liquid-state and semi-liquid-state metal energy-storing batteries |
| WO2015042295A1 (en) * | 2013-09-18 | 2015-03-26 | Ambri Inc. | Unified structural and electrical interconnections for high temperature batteries |
| CN104124459A (en) * | 2014-07-22 | 2014-10-29 | 西安交通大学 | Square liquid metal battery device and assembling method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109449318A (en) * | 2018-10-15 | 2019-03-08 | 大连中比动力电池有限公司 | A kind of cylindrical battery configuration and preparation method of non-metal shell |
| CN113707952A (en) * | 2021-08-02 | 2021-11-26 | 大连理工大学 | Circular-section liquid metal battery with grid device for inhibiting fluid instability |
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| Publication number | Publication date |
|---|---|
| CN106252747B (en) | 2018-12-07 |
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