CN107394282B - A kind of liquid metal cell and its packaging technology - Google Patents
A kind of liquid metal cell and its packaging technology Download PDFInfo
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- CN107394282B CN107394282B CN201710607805.6A CN201710607805A CN107394282B CN 107394282 B CN107394282 B CN 107394282B CN 201710607805 A CN201710607805 A CN 201710607805A CN 107394282 B CN107394282 B CN 107394282B
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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
- H01M10/38—Construction or manufacture
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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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- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention provides a kind of liquid metal cell and its packaging technology.The battery includes cell cover, battery case, sealed insulation device, negative pole currect collecting bar, the first Perforated decking and the second Perforated decking, the first negative current collector and the second negative current collector, first electrolyte and the second electrolyte, the first positive electrode and the second positive electrode and baffle.The configuration of the present invention is simple can not only guarantee the high-performance of battery, while easy to assembly, and the consistency of battery production is good.Liquid metal cell packaging technology proposed by the invention no longer needs to carry out negative current collector repeated multiple times negative electrode material absorption and throws away operation, guaranteeing that battery is high performance simultaneously, greatly reducing battery assembly difficulty, improve the consistency of battery production.
Description
Technical field
The present invention relates to electrochemical energy storage cell field, specially a kind of liquid metal cell and its packaging technology.
Background technique
In recent years, to cope with energy crisis and problem of environmental pollution brought by traditional thermal power generation, it is with wind-powered electricity generation, photovoltaic
The renewable energy power generation technology of representative has welcome unprecedented development.However, due to wind energy, the randomness of solar energy and not
Stability brings very big difficulty for the smooth output of generation of electricity by new energy and safety grid-connection.The extensive energy storage technology of power grid grade is solution
The certainly effective way of this problem, in all kinds of extensive energy storage technologies, battery energy storage with its energy conversion efficiency, advise by high, system
Mould configuration flexibly, the features such as not limited by geographical environment, become the one preferred technique of power grid energy-storage system.Storage more mature at present
Can battery have lithium ion battery, sodium-sulphur battery, lead-acid battery etc., but these technologies cannot be considered in terms of extensive energy storage to energy storage at
The requirement of this and cycle life.Therefore, a kind of secondary cell technology towards power grid stored energy application, i.e. liquid metal cell are met the tendency of
And it gives birth to.
Liquid metal cell is usually run at high temperature, positive and negative electrode be liquid metal, electrolyte be inorganic, fluid or
Semi liquid state fused salt, since molten metal is not miscible with fused salt, three-layer liquid state component is according to density variation AUTOMATIC ZONING.With biography
System battery is compared, and liquid metal cell has many advantages, such as lower cost for material, is easy to amplify production, has extended cycle life, very suitable
For extensive power energy storage.
Currently, the assembly of liquid metal cell generallys use the assembling mode with certain depth of discharge mode, i.e. battery
When assembly, by part negative electrode material indwelling in negative current collector, remaining negative electrode material is then smelted into conjunction in advance with positive electrode
Gold, then positive grid alloy, electrolyte and negative current collector are successively packed into battery case, heat up operation after being sealed.This assembly
Mode compares the full mode for charging or discharging entirely, can effectively control cathode under battery high-temperature, electrolyte, positive three-layer liquid state electricity
The uniform and stable foundation at chemical reaction interface significantly improves battery operation success rate to reduce Battery formation difficulty.
However, only one negative current collector of traditional liquid metal cell, therefore when battery cathode production, it needs to rely on
Manpower at high temperature gets rid of the negative metal of liquid or molten state by machinery from the foam metal plate for being filled negative electrode material
It is a part of out.The negative metal quality thrown away every time under this mode of operation can not be precisely controlled, and generally required repeatedly to adsorb, be got rid of
Repetitive process out can just be met the requirements, and cause battery manufacturing process extremely complex, and assembling difficulty is big, and consistency is also difficult to protect
Card, is unfavorable for large-scale production.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of liquid metal cell and its packaging technology, structure
Simply, it can not only guarantee the high-performance of battery, while easy to assembly, the consistency of battery production is good.
The present invention is to be achieved through the following technical solutions:
A kind of liquid metal cell, including cell cover, battery case, sealed insulation device, negative pole currect collecting bar, more than first
Blind patch and the second Perforated decking, the first negative current collector and the second negative current collector, the first electrolyte and the second electrolysis
Material, the first positive electrode and the second positive electrode and baffle；
Inside the battery case by barrier partitions be two reaction zones domain I and II；Upper end is tightly connected cell cover；
The height of baffle is higher than the height of electrolyte；
Any region in the conversion zone I and II is disposed with the first positive electrode, the first electrolysis from bottom to up
Material, the first negative current collector and the first Perforated decking；A part of negative electrode material is adsorbed in first negative current collector, and is in
Adsorption saturation state, the first negative current collector are immersed in the first electrolyte, and are fixedly connected with the first Perforated decking；The
One positive electrode quality is specified in electrolyte in accounting, the first electrolyte quality of cell positive material nominal-mass
The negative electrode material that the accounting of quality and the first negative current collector adsorb is identical in the accounting of cell negative electrode material nominal-mass, and
For 10%-90%；
Another region in the conversion zone I and II is disposed with the second positive electrode, the second electrolysis from bottom to up
Material, the second negative current collector and the second Perforated decking；Second negative current collector is immersed in the second electrolyte, and with
Second Perforated decking is fixedly connected；Second positive electrode is positive electrode nominal-mass remainder and negative electrode material nominal-mass
The alloy of remainder；Second electrolyte is the remainder of electrolyte nominal-mass；Second negative current collector pair
The saturated extent of adsorption of negative electrode material is the remainder of negative electrode material nominal-mass；
Described negative pole currect collecting bar one end is separately connected the first Perforated decking and the second Perforated decking, and the other end passes through sealing
Seal is arranged across cell cover；Negative pole currect collecting bar and baffle are in gap setting.
Preferably, the baffle is parallel to the symmetry axis fixed setting of battery case.
Preferably, the baffle is fixed at battery housing base in a ring, and two reaction zones domain difference is rounded
It is arranged with annular.
Preferably, the first negative current collector and the second negative current collector are made of one or more porous foam metal plate,
Its shape is round, ellipse, annular or rectangle.
A kind of packaging technology of liquid metal cell, comprising the following steps:
Step 1, battery cathode makes；
First negative current collector is immersed in negative electrode material, negative electrode material melting is heated to, to the first negative current collector
It takes out, is fixed to after room temperature cooling on the first Perforated decking after adsorption saturation, then the first Perforated decking is fixed to negative pole currect collecting
On bar；Wherein, the first negative current collector is the 10%- of cell negative electrode material nominal-mass to the saturated extent of adsorption of negative electrode material
90%；
Second negative current collector is directly fixed on the second Perforated decking, then the second Perforated decking is fixed to cathode collection
In flow post；Wherein, the second negative current collector is the residue of cell negative electrode material nominal-mass to the saturated extent of adsorption of negative electrode material
Part；
Step 2, anode makes；
First positive electrode is put into any one in the intracorporal two reaction zones domain of battery case；Wherein, the first anode
Quality of materials accounts for the ratio of cell positive material nominal-mass and the negative metal of the first negative current collector absorption accounts for battery cathode
The ratio of material nominal-mass is identical；
It is alloy work by positive electrode nominal-mass remainder and negative electrode material nominal-mass remainder heating melting
For the second positive electrode, the intracorporal another conversion zone of battery case is put into after room temperature cooling；Two reaction zones domain is mutually isolated；
Step 3, the first electrolyte is put into the conversion zone of the first positive electrode, another region is then put into the second electricity
Solve material；Wherein, the first electrolyte quality is inhaled in the accounting of electrolyte nominal-mass and the first negative current collector
Attached negative electrode material is identical in the accounting of cell negative electrode material nominal-mass, and the second electrolyte is the specified matter of electrolyte
The remainder of amount；
Step 4, the first, second negative current collector, negative pole currect collecting bar and battery will be connected to using sealed insulation device
Upper cover insulated enclosure, the negative pole currect collecting bar after then connecting with cell cover are put into battery case, wherein the first cathode collection
Stream device is correspondingly placed into the conversion zone of the first positive electrode, and the second negative current collector is correspondingly placed into the reaction zone of the second positive electrode
Domain；
Step 5, cell cover and battery case are tightly connected, obtain liquid metal cell.
Preferably, entire assembling process carries out in argon atmospher.
Further, cell cover, battery case, the first Perforated decking, the second Perforated decking and baffle use stainless steel
It is made.
Further, sealed insulation device is made of ceramics or glass.
Further, negative pole currect collecting bar is made of stainless steel, oxygen-free copper or titanium alloy.
Compared with prior art, the invention has the following beneficial technical effects:
Liquid metal cell proposed by the present invention, structure breach conventional liquid metal battery and only use single cathode collection
The concept of device is flowed, but uses two negative current collectors, each negative current collector is by one or more foam iron-nickel metal plate structure
At.When battery assembly, a negative current collector is filled the negative electrode material of certain mass in advance, another does not adsorb cathode material then
Material, self-assembling formation have the liquid metal cell of certain depth of discharge.In addition, baffle is arranged in battery housing base in the present invention,
To which battery compartment is divided into two reaction zones domain, active material is divided into after two parts by when battery assembly is respectively placed in two
In region, it is equivalent to electrochemical reaction and is carried out respectively two interfaces.This design effectively prevents battery in charge and discharge
Some negative current collector was likely to occur the problem of absorption leads to battery short circuit in journey, guaranteed while changing battery structure
The high-performance of battery.
Liquid metal cell packaging technology proposed by the invention no longer needs to carry out negative current collector repeated multiple times bear
Pole material adsorbs and throws away operation, is guaranteeing that battery is high performance simultaneously, is greatly reducing battery assembly difficulty, improve battery
The consistency of production.
Detailed description of the invention
Fig. 1 is liquid metal cell structural schematic diagram described in present example one and two.
Fig. 2 is liquid metal cell structural schematic diagram described in present example three.
Fig. 3 is the top view of liquid metal cell internal structure described in present example three.
Fig. 4 is using liquid metal cell appearance schematic diagram described in present example.
Fig. 5 is the charging and discharging curve of liquid metal cell described in embodiment one.
Fig. 6 is the performance curve of liquid metal cell described in embodiment two.
Fig. 7 is the performance curve of liquid metal cell described in embodiment three.
In figure: 1 is cell cover, and 2 be battery case, and 3 be sealed insulation device, and 4 be cathode current collector, and 5 be more than first
Blind patch, 6 be the second Perforated decking, and 7 be the first negative current collector, and 8 be the second negative current collector, and 9 be the first electrolyte,
10 be the second electrolyte, and 11 be the first positive electrode, and 12 be the second positive electrode, and 13 be baffle.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
A kind of liquid metal cell structure of the present invention, as shown in Figure 1, including cell cover 1, battery case 2, sealed insulation
Device 3, negative pole currect collecting bar 4, the first and second Perforated decking 5,6, the first and second negative current collector 7,8, the first and second electrolyte 9,
10, the first and second positive electrode 11,12 and baffle 13.
Wherein, the cell cover 1 and 2 material of battery case are stainless steel, and 3 material of sealed insulation device is ceramics or glass
Glass, 4 material of negative pole currect collecting bar are stainless steel, oxygen-free copper or titanium alloy, and the first and second Perforated decking 5,6 and 13 material of baffle are not
Become rusty steel.1 center of cell cover is installed with sealed insulation device 3, by sealed insulation device 3 make cell cover 1 with
Negative pole currect collecting bar 4 is tightly connected.
In order to reach the optimum performance of liquid metal cell, the first and second negative current collector 7,8 is by one or more porous bubble
Foam metal plate is constituted, and shape is round, ellipse, annular or rectangle.Wherein it is adsorbed with that account for battery negative in the first negative current collector 7
The negative electrode material of pole material nominal-mass 10%-90%, and it is in adsorption saturation state, the second negative current collector 8 is to cathode material
The saturated extent of adsorption of material is the remainder of negative electrode material nominal-mass.
The baffle 13 is fixed on battery housing base, and height of baffle plate is higher than cell electrolyte interface, and must not be with cathode
Current collector contact, so that battery compartment to be divided into I, II two reaction zones domain completely.
Referring to Fig.1, liquid metal cell packaging technology proposed by the present invention includes:
Battery cathode production.First negative current collector 7 is immersed in negative electrode material, negative electrode material melting is heated to, to
It takes out, is fixed to after room temperature cooling on the first Perforated decking 5 after first negative current collector, 7 adsorption saturation, then by the first perforated lid
Plate 5 is fixed on negative pole currect collecting bar 4.Second negative current collector 8 is directly fixed on the second Perforated decking 6, then by more than second
Blind patch 6 is fixed on negative pole currect collecting bar 4.Whole process carries out in argon atmospher.
Anode production.Any one in I, II region that first positive electrode 11 is put into battery case 2.Its
In, 11 mass of the first positive electrode accounts for the ratio of cell positive material nominal-mass and the cathode of the first negative current collector 7 absorption
The ratio that metal accounts for cell negative electrode material nominal-mass is identical.Positive electrode nominal-mass remainder and negative electrode material is specified
Mass excess part heating melting is alloy as the second positive electrode 12, is put into after room temperature cooling another in battery case 2
Conversion zone.Two reaction zones domain is mutually isolated.Whole process carries out in argon atmospher.
First electrolyte 9 is put into the conversion zone of the first positive electrode 11, another region is then put into the second electrolysis
Material 10.Wherein, accounting and first negative current collector 7 of 9 mass of the first electrolyte in electrolyte nominal-mass
The negative electrode material of absorption is identical in the accounting of cell negative electrode material nominal-mass, and the second electrolyte 10 is electrolyte volume
Determine the remainder of quality.Whole process carries out in argon atmospher.
Using sealed insulation device 3 by battery cathode current collector 4 and 1 insulated enclosure of cell cover, then will on battery
Negative pole currect collecting bar 4 after lid connection is put into battery case 2, wherein the first negative current collector 7 is correspondingly placed into the first positive electrode
11 conversion zone, correspondingly, the second negative current collector 8 is correspondingly placed into the conversion zone of the second positive electrode 12.Whole process
It is carried out in argon atmospher.
Cell cover 1 and battery case 2 are tightly connected.Whole process carries out in argon atmospher.
Below with reference to specific embodiments of the present invention to its further instruction.
Embodiment one: Li-Sn/Sb liquid metal is prepared for using liquid metal cell structure and packaging technology of the invention
Battery.Wherein, negative metal lithium dosage is 6g, and cathode metal Sn/Sb alloy dosage is 85.76g, and electrolyte dosage is 125g.
Specific steps are as follows:
Battery cathode production.3g lithium is adsorbed in advance in the first negative current collector, the first negative current collector is fixed to
After Perforated decking, then cover board is fixed on negative pole currect collecting bar.Second negative current collector is then directly fixed on Perforated decking, then
Perforated decking is fixed on negative pole currect collecting bar.Whole process carries out in argon atmospher.
Anode production.It is cooling after Li-Sn/Sb alloy by 42.88g Sn/Sb alloy and 3g Li heating melting, puts
Enter intracorporal Ith area of battery case, IIth area is then directly placed into 42.88g Sn/Sb alloy.Whole process carries out in argon atmospher.
62.5g electrolyte is respectively added in Ith area and IIth area.Whole process carries out in argon atmospher.
Battery cathode collector and cell cover are sealed using sealed insulation device, after then being connect with cell cover
Negative pole currect collecting bar be put into battery case, wherein the first negative current collector is put into IIth area, correspondingly, the second negative current collector is put
Enter Ith area.
Cell cover is hermetically connected with the shell.Whole process carries out in argon atmospher.
Cell testing results are as shown in figure 5, as seen from the figure, battery charging and discharging curve is steady, and repeatability is preferably；Individual pen circulation
Coulombic efficiency be 98.5%, energy efficiency 88%, average discharge volt 0.8V.This illustrates this device and technique assembling
Battery have efficient operational efficiency.
Embodiment two: Li-Pb/Sb liquid metal is prepared for using liquid metal cell structure and packaging technology of the invention
Battery.Wherein, negative metal lithium dosage is 13g, and cathode metal Pb/Sb alloy dosage is 290g, and electrolyte dosage is 326g.Tool
Body step are as follows:
Battery cathode production.3.9g lithium is adsorbed in advance in the first negative current collector, the first negative current collector is fixed
It is fixed on negative pole currect collecting bar to Perforated decking, then by cover board.Second negative current collector is then directly fixed on Perforated decking,
Perforated decking is fixed on negative pole currect collecting bar again.Whole process carries out in argon atmospher.
Anode production.It is cooling after Li-Pb/Sb alloy by 203g Pb/Sb alloy and 9.1g Li heating melting, puts
Enter intracorporal Ith area of battery case, IIth area is then directly placed into 87g Pb/Sb alloy.Whole process carries out in argon atmospher.
228.2g electrolyte is added in Ith area, 97.8g electrolyte is added in IIth area.Whole process carries out in argon atmospher.
Battery cathode collector and cell cover are sealed using sealed insulation device, after then being connect with cell cover
Negative pole currect collecting bar be put into battery case, wherein the first negative current collector is put into IIth area, correspondingly, the second negative current collector is put
Enter Ith area.
Cell cover is hermetically connected with the shell.Whole process carries out in argon atmospher.
As seen from Figure 6, excellent using the battery performance with this device and technique assembling.Battery can dose-effect under 50 circulations
Rate is 75% or so, and coulombic efficiency is greater than 98%, and battery capacity attenuation rate is only 0.25%.
Embodiment three: Li-Pb liquid metal electricity is prepared for using liquid metal cell structure and packaging technology of the invention
Pond.Wherein, negative metal lithium dosage is 2.6g, and cathode metal Pb dosage is 180g, and electrolyte dosage is 118g.Specific steps
Are as follows:
Battery cathode production.1.82g lithium is adsorbed in advance in the first negative current collector, the first negative current collector is fixed
It is fixed on negative pole currect collecting bar to Perforated decking, then by cover board.Second negative current collector is then directly fixed on Perforated decking,
Perforated decking is fixed on negative pole currect collecting bar again.Whole process carries out in argon atmospher.
Anode production.It is cooling after Li/Pb alloy by 54g Pb and 0.78g Li heating melting, is put into battery case
Ith area Nei, IIth area are then directly placed into 126g Pb.Whole process carries out in argon atmospher.
35.4g electrolyte is added in Ith area, 82.6g electrolyte is added in IIth area.Whole process carries out in argon atmospher.
Battery cathode collector and cell cover are sealed using sealed insulation device, after then being connect with cell cover
Negative pole currect collecting bar be put into battery case, wherein the first negative current collector is put into IIth area, correspondingly, the second negative current collector is put
Enter Ith area.
Cell cover is hermetically connected with the shell.Whole process carries out in argon atmospher.
As seen from Figure 7, excellent using the battery performance with this device and technique assembling.Battery coulomb under 50 circulations is imitated
Rate is greater than 97%, and energy efficiency is 60% or more.
From above-described embodiment as can be seen that using liquid metal cell structure and its packaging technology of the invention not only can be with
Battery assembly difficulty is reduced, improves conformity of production, additionally it is possible to obtain the battery cell of performance efficient stable.In addition, of the invention
The battery structure and its technique is equally applicable to all kinds of liquid metal cell systems other than the present embodiment, such as Na-Bi,
Na-Sb, Li-Sb, Mg-Sb etc..
Claims (9)
1. a kind of liquid metal cell, which is characterized in that including cell cover (1), battery case (2), sealed insulation device
(3), negative pole currect collecting bar (4), the first Perforated decking (5) and the second Perforated decking (6), the first negative current collector (7) and second negative
Pole collector (8), the first electrolyte (9) and the second electrolyte (10), the first positive electrode (11) and the second anode
Material (12) and baffle (13)；
The battery case (2) is internal to be divided into two reaction zones domain I and II by baffle (13)；Upper end is tightly connected on battery
It covers (1)；The height of baffle (13) is higher than the height of electrolyte；
Any region in the conversion zone I and II is disposed with the first positive electrode (11), the first electrolysis from bottom to up
Material (9), the first negative current collector (7) and the first Perforated decking (5)；Absorption a part is negative in first negative current collector (7)
Pole material, and be in adsorption saturation state, the first negative current collector (7) is immersed in the first electrolyte (9), and with first
Perforated decking (5) is fixedly connected；First positive electrode (11) quality cell positive material nominal-mass accounting, first electrolysis
Material (9) quality electrolyte nominal-mass accounting and the first negative current collector (7) adsorb negative electrode material in electricity
The accounting of pond negative electrode material nominal-mass is identical, and is 10%-90%；
Another region in the conversion zone I and II is disposed with the second positive electrode (12), the second electrolysis from bottom to up
Material (10), the second negative current collector (8) and the second Perforated decking (6)；Second negative current collector (8) is immersed in the second electrolysis
In material (10), and it is fixedly connected with the second Perforated decking (6)；Second positive electrode (12) is surplus for positive electrode nominal-mass
Alloy of the remaining part point with negative electrode material nominal-mass remainder；Second electrolyte (10) is electrolyte nominal-mass
Remainder；It is negative electrode material nominal-mass to the saturated extent of adsorption of negative electrode material designed by second negative current collector (8)
Remainder；
Described negative pole currect collecting bar (4) one end is separately connected the first Perforated decking (5) and the second Perforated decking (6), and the other end is logical
Sealing seal (3) are crossed to be arranged across cell cover (1)；Negative pole currect collecting bar (4) and baffle (13) are in gap setting.
2. a kind of liquid metal cell according to claim 1, which is characterized in that the baffle (13) is parallel to battery
The symmetry axis of shell (2) is fixedly installed.
3. a kind of liquid metal cell according to claim 1, which is characterized in that the baffle (13) is fixed in a ring
Setting distinguishes rounded and annular setting in battery case (2) bottom, two reaction zones domain.
4. a kind of liquid metal cell according to claim 1, which is characterized in that the first negative current collector (7) and second
Negative current collector (8) is made of one or more porous foam metal plate, and shape is round, ellipse, annular or rectangle.
5. a kind of packaging technology of liquid metal cell, which comprises the following steps:
Step 1, battery cathode makes；
First negative current collector (7) is immersed in negative electrode material, negative electrode material melting is heated to, to the first negative current collector
(7) it takes out, is fixed to after room temperature cooling on the first Perforated decking (5) after adsorption saturation, then the first Perforated decking (5) is fixed to
On negative pole currect collecting bar (4)；Wherein, the first negative current collector (7) is cell negative electrode material volume to the saturated extent of adsorption of negative electrode material
Determine the 10%-90% of quality；
Second negative current collector (8) is directly fixed on the second Perforated decking (6), then the second Perforated decking (6) is fixed to
On negative pole currect collecting bar (4)；Wherein, negative for battery to the saturated extent of adsorption of negative electrode material designed by the second negative current collector (8)
The remainder of pole material nominal-mass；
Step 2, anode makes；
First positive electrode (11) is put into any one in the two reaction zones domain in battery case (2)；Wherein, first just
The negative metal that the ratio that pole material (11) quality accounts for cell positive material nominal-mass is adsorbed with the first negative current collector (7) accounts for
The ratio of cell negative electrode material nominal-mass is identical；
It is alloy as the using positive electrode nominal-mass remainder and negative electrode material nominal-mass remainder heating melting
Two positive electrodes (12), another conversion zone being put into after room temperature cooling in battery case (2)；Two reaction zones domain mutually every
From；
Step 3, the first electrolyte (9) is put into the conversion zone of the first positive electrode (11), another region is then put into
Two electrolytes (10)；Wherein, the first electrolyte (9) quality is negative in the accounting of electrolyte nominal-mass and first
The negative electrode material of pole collector (7) absorption is identical in the accounting of cell negative electrode material nominal-mass, the second electrolyte (10)
For the remainder of electrolyte nominal-mass；
Step 4, the negative pole currect collecting bar of the first, second negative current collector (7), (8) will be connected to using sealed insulation device (3)
(4) with cell cover (1) insulated enclosure, the negative pole currect collecting bar (4) after then connecting with cell cover is put into battery case (2)
It is interior, wherein the first negative current collector (7) is correspondingly placed into the conversion zone of the first positive electrode (11), the second negative current collector (8)
It is correspondingly placed into the conversion zone of the second positive electrode (12)；
Step 5, cell cover (1) and battery case (2) is tightly connected, obtains liquid metal cell.
6. a kind of packaging technology of liquid metal cell according to claim 5, which is characterized in that entire assembling process exists
It is carried out in argon atmospher.
7. a kind of packaging technology of liquid metal cell according to claim 6, which is characterized in that cell cover (1), electricity
Pond shell (2), the first Perforated decking (5), the second Perforated decking (6) and baffle (13) are made of stainless steel.
8. a kind of packaging technology of liquid metal cell according to claim 6, which is characterized in that sealed insulation device
(3) it is made of ceramics or glass.
9. a kind of packaging technology of liquid metal cell according to claim 6, which is characterized in that negative pole currect collecting bar (4)
It is made of stainless steel, oxygen-free copper or titanium alloy.
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| CN109841910B (en) * | 2019-02-28 | 2020-12-11 | 西安西电电气研究院有限责任公司 | Liquid metal battery |
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