CN108963291A - A kind of electrode system and the independent slim thermal cell of heating system - Google Patents
A kind of electrode system and the independent slim thermal cell of heating system Download PDFInfo
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- CN108963291A CN108963291A CN201810792243.1A CN201810792243A CN108963291A CN 108963291 A CN108963291 A CN 108963291A CN 201810792243 A CN201810792243 A CN 201810792243A CN 108963291 A CN108963291 A CN 108963291A
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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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/30—Deferred-action cells
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Abstract
The invention discloses a kind of electrode systems and the independent slim thermal cell of heating system, heating system is wrapped up by thermally conductive insulating layer, heating system gives electrode system heat supply from surrounding, the preparation method of the electrode system is pressing or hot spray process, the active material of the positive electrode is alloy cpd and is pure substance, thermally conductive insulating layer uses thermal conductivity for 32-400W/ (mK), and resistivity is greater than 1015Ω cm, material of the fusing point at 1200 DEG C or more, while ensureing normal battery operation, the activationary time of battery will not be extended, also it solves by many single batteries series connection bring high voltage safety problem, the present invention significantly reduces the height of thermal cell, the active material using the alloy cpd with more high-energy-density as positive electrode using surrounding around heating method, positive plate thickness is reduced under identical pressed pellet densities, further decreases thermal cell height.
Description
Technical field
The present invention relates to thermal cell field more particularly to a kind of electrode systems and the independent slim thermal cell of heating system.
Background technique
In the 1960s, Unidynamics company of the U.S. has developed with the joint efforts of Sandia National Laboratory
Piece type thermoelectricity pool technology, the technology obtain thermal cell pole piece in such a way that powder is cold-pressed.Piece type technology is also in thermal cell
It is applied in heating source, has developed the new piece type heating source based on iron and potassium hyperchlorate.This material remains to after firing
The constant of size is kept, it is small to generate gas flow, and paper hotter than zirconium/barium chromate is safer.Furthermore it is possible to easily pass through tune
The ratio of iron and potassium hyperchlorate is controlled to control the output of heat, and due to iron powder excess in heating sheet, so heating sheet also fills
When the effect of electronic conductor.The full sheet type thermal cell of Sandia National Laboratory development is at that time for improving thermoelectricity pool technology
It is a huge leap.So far the assembly of entire thermal cell is remained by heating system → collector → positive electrode → diaphragm material
Material → negative electrode material → collector → heating system mode is superimposed, and series system stacks gradually, and parallel way then reversely stacks,
Collector → positive electrode → diaphragm material → negative electrode material → collector forms electrode material, such as Fig. 5, however, series connection is still
Parallel connection, heating system are integrated with electrode system always, and which has used over half a century not change.In order to reduce thermoelectricity
Pond height describes a kind of ceramic diaphragm prepared using belt placingJi Shu in patent US8313853B2, can using the technology
Largely to reduce the thickness of thermal cell septation, it can not be substantially reduced thermal cell height, it is thin not adapt to thermal cell
The development trend of type.
Summary of the invention
The technical problem to be solved by the present invention is a kind of electrode system and the independent slim thermal cell of heating system are provided,
To solve the problem of that prior art thermal cell excessive height does not adapt to the development trend of thermal cell slimming.
The technical scheme is that a kind of electrode system and the independent slim thermal cell of heating system, including electrode system
System and heating system, heating system are wrapped up by thermally conductive insulating layer, and heating system gives electrode system heat supply from surrounding.
The preparation method of the electrode system is pressing or hot spray process.
The process of the pressing be by positive electrode, diaphragm material, negative electrode material and collector respectively in a manner of cold pressing
It is tabletted, then a monomer is formed by sequentially stacking gradually up and down for positive electrode, diaphragm material, negative electrode material and collector
Battery structure, monomer battery structure stack to form electrode system.
The process of the hot spray process is that negative electrode material is pressed into piece, and positive electrode is sprayed in collector one side, then
Diaphragm material is sprayed on positive electrode, last negative electrode material piece, which is placed in stack under diaphragm material, forms a single battery knot
Structure, monomer battery structure stack to form electrode system.
The active material of the positive electrode is alloy cpd FexCo1-xS2、FexNi1-xS2、CoxNi1-xS2Or
FexCoyNi1-x-yS2One of, 0 < x <, 1,0 < x+y < 1, and be pure substance.
The shape of the electrode system is solid cylindricality or hollow cylindrical.
The material of the thermally conductive insulating layer uses thermal conductivity for 32-400W/ (mK), and resistivity is greater than 1015Ω cm melts
It is one or more of compositions of beryllium oxide, aluminium oxide, aluminium nitride, boron nitride or silicon nitride o'clock in 1200 DEG C or more of material
Composite material.
The material of the collector is graphite, stainless steel, metallic nickel and its alloy or metallic copper and its alloy.
The beneficial effects of the present invention are: by separating the electrode system of thermal cell and heating system with thermally conductive insulating layer,
The heating method up and down of the prior art, which is changed to surrounding, significantly reduces the height of thermal cell around heating method, while using tool
There is active material of the alloy cpd of more high-energy-density as positive electrode, the active material of positive electrode is than Conventional thermoelectric pond
Sulfide positive electrode (FeS2、CoS2、NiS2) specific energy is higher, positive mix dosage is reduced, is reduced under identical pressed pellet densities
Positive plate thickness further decreases thermal cell height.In addition, due to the separation of battery heating system and electrode system, so that former
Having in thermal cell activates heating sheet moment that positive electrode bring thermal shock effect is greatly reduced, and is improving battery electrode material
While the utilization rate and safety of material, the use scope of thermal cell heating material dosage is also widened, simultaneously as thermally conductive exhausted
Edge layer uses thermal conductivity for 32-400W/ (mK), and resistivity is greater than 1015Ω cm, fusing point are good in 1200 DEG C or more of material
Insulating properties, also solve by many single batteries connect bring high voltage safety problem.
Detailed description of the invention
Fig. 1 is the main view the schematic diagram of the section structure of " embodiment 1 " of the invention；
Fig. 2 is the top view cross section structural schematic diagram of " embodiment 1 " of the invention；
Fig. 3 is the main view the schematic diagram of the section structure of " embodiment 2 " and " embodiment 3 " of the invention；
Fig. 4 is the top view cross section structural schematic diagram of " embodiment 2 " and " embodiment 3 " of the invention；
Fig. 5 is the assembly structure figure of prior art thermal cell.
Specific embodiment
With reference to the accompanying drawing and invention is described further in specific embodiment:
Embodiment 1
With reference to Fig. 1-2, a kind of electrode system of the present invention and the independent slim thermal cell of heating system, heating system is by thermally conductive
Insulating layer package, heating system give electrode system heat supply from surrounding, heating system by zirconium and barium chromate mixture and electric ignition
Head composition ignition system, meanwhile, combustion system is formed by iron and potassium hyperchlorate mixture, is filled in thermally conductive insulating layer.
The preparation method of the electrode system is pressing or hot spray process.
The process of the pressing be by positive electrode, diaphragm material, negative electrode material and collector respectively in a manner of cold pressing
It is tabletted, then a monomer is formed by sequentially stacking gradually up and down for positive electrode, diaphragm material, negative electrode material and collector
Battery structure, monomer battery structure stack to form electrode system.
The process of the hot spray process is that negative electrode material is pressed into piece, and positive electrode is sprayed in collector one side, then
Diaphragm material is sprayed on positive electrode, last negative electrode material piece, which is placed in stack under diaphragm material, forms a single battery knot
Structure, monomer battery structure stack to form electrode system.
The active material of the positive electrode is alloy cpd FexCo1-xS2、FexNi1-xS2、CoxNi1-xS2Or
FexCoyNi1-x-yS2One of, 0 < x <, 1,0 < x+y < 1, the active material of positive electrode is just than Conventional thermoelectric pond sulfide
Pole material (FeS2、CoS2、NiS2) specific energy is higher, reduces positive mix dosage, it is thick that positive plate is reduced under identical pressed pellet densities
Degree, to further decrease thermal cell height.That the present embodiment is selected is FexCo1-xS2。
Diaphragm material is magnesia and lithium chloride-potassium chloride-lithium bromide eutectics fused salt, and negative electrode material is lithium boron alloy piece,
Collector is metal nickel sheet, the monomer battery structure with a thickness of 0.6~0.7mm is made with hot spray process, by two groups of 122 monomers
Battery is sequentially connected in series stacking and is connected in parallel again, and single group series connection height is 80.5mm, and the electrode system that total height is 161.2mm is made
System, the shape of the electrode system are hollow cylindrical, are 33W/ (mK) by thermal conductivity, and resistivity is greater than 1016The nitrogen of Ω cm
Change the heat conductive insulating pipe that does of boron ceramics be placed in electrode system it is hollow in, heating material is filled in heat conductive insulating pipe, then in electricity
The aeroge that electrode systems outer layer wraps tightly one layer of 3mm thickness constitutes insulating layer, i.e. thermal cell roll-outs, thermal cell is packed into
In the titanium alloy barrel body of 190mm height, electric discharge, activationary time 0.35s are activated after 6h is stored at+60 DEG C, crest voltage is
256.2V, under 250A pulse current, the pulse voltage of 45s is 164.7V.
Embodiment 2
With reference to Fig. 3-4, a kind of electrode system of the present invention and the independent slim thermal cell of heating system, heating system is by thermally conductive
Insulating layer package, heating system give electrode system heat supply from surrounding, heating system by zirconium and barium chromate mixture and electric ignition
Head composition ignition system, meanwhile, combustion system is formed by iron and potassium hyperchlorate mixture, is filled in thermally conductive insulating layer.
The preparation method of the electrode system is pressing or hot spray process.
The process of the pressing be by positive electrode, diaphragm material, negative electrode material and collector respectively in a manner of cold pressing
It is tabletted, then a monomer is formed by sequentially stacking gradually up and down for positive electrode, diaphragm material, negative electrode material and collector
Battery structure, monomer battery structure stack to form electrode system.
The process of the hot spray process is that negative electrode material is pressed into piece, and positive electrode is sprayed in collector one side, then
Diaphragm material is sprayed on positive electrode, last negative electrode material piece, which is placed in stack under diaphragm material, forms a single battery knot
Structure, monomer battery structure stack to form electrode system.
The active material of the positive electrode is alloy cpd FexCo1-xS2、FexNi1-xS2、CoxNi1-xS2Or
FexCoyNi1-x-yS2One of, 0 < x <, 1,0 < x+y < 1, the active material of positive electrode is just than Conventional thermoelectric pond sulfide
Pole material (FeS2、CoS2、NiS2) specific energy is higher, reduces positive mix dosage, it is thick that positive plate is reduced under identical pressed pellet densities
Degree, to further decrease thermal cell height.That the present embodiment is selected is FexNi1-xS2。
Diaphragm material is magnesia and lithium chloride-potassium chloride-lithium bromide eutectics fused salt, and negative electrode material is lithium boron alloy piece,
Collector is stainless steel substrates, is made with pressing with a thickness of 1.0~1.1mm, and 146 single batteries are sequentially connected in series stacking, system
The shape of the electrode system for being 157.8mm at total height, the electrode system is solid cylindricality, and electrode material is placed in a thermal conductivity
Rate is 196.2W/ (mK), and resistivity is greater than 1015In the heat conductive insulating round tube of the beryllium oxide ceramics of Ω cm, separately put on another
The heat conductive insulating round tube of root beryllium oxide ceramics 10mm bigger than aforementioned heat conductive insulating round tube diameter, heating material are filled in two and lead
In thermal insulation round tube, then heat conductive insulating outer tube layer wrap tightly one layer of 3mm thickness aeroge constitute insulating layer, i.e., thermal cell equip
It finishes, thermal cell is fitted into the titanium alloy barrel body of 190mm height, activate electric discharge, activationary time after 6h is stored at+60 DEG C
0.95s, crest voltage 298.3V, under 250A pulse current, the pulse voltage of 45s is 153.6V.
Embodiment 3
With reference to Fig. 3-4, a kind of electrode system of the present invention and the independent slim thermal cell of heating system, heating system is by thermally conductive
Insulating layer package, heating system give electrode system heat supply from surrounding, heating system by zirconium and barium chromate mixture and electric ignition
Head composition ignition system, meanwhile, combustion system is formed by iron and potassium hyperchlorate mixture, is filled in thermally conductive insulating layer.
The preparation method of the electrode system is pressing or hot spray process.
The process of the pressing be by positive electrode, diaphragm material, negative electrode material and collector respectively in a manner of cold pressing
It is tabletted, then a monomer is formed by sequentially stacking gradually up and down for positive electrode, diaphragm material, negative electrode material and collector
Battery structure, monomer battery structure stack to form electrode system.
The process of the hot spray process is that negative electrode material is pressed into piece, and positive electrode is sprayed in collector one side, then
Diaphragm material is sprayed on positive electrode, last negative electrode material piece, which is placed in stack under diaphragm material, forms a single battery knot
Structure, monomer battery structure stack to form electrode system.
The active material of the positive electrode is alloy cpd FexCo1-xS2、FexNi1-xS2、CoxNi1-xS2Or
FexCoyNi1-x-yS2One of, 0 < x <, 1,0 < x+y < 1, the active material of positive electrode is just than Conventional thermoelectric pond sulfide
Pole material (FeS2、CoS2、NiS2) specific energy is higher, reduces positive mix dosage, it is thick that positive plate is reduced under identical pressed pellet densities
Degree, to further decrease thermal cell height.That the present embodiment is selected is CoxNi1-xS2。
Diaphragm material is magnesia and lithium chloride-potassium chloride-lithium bromide eutectics fused salt, and negative electrode material is lithium boron alloy piece,
Collector is stainless steel substrates, is made with pressing with a thickness of 1.0~1.1mm, and 146 single batteries are sequentially connected in series stacking, system
The shape of the electrode system for being 161.2mm at total height, the electrode system is solid cylindricality, and electrode material is placed in a thermal conductivity
Rate is 98.3W/ (mK), and resistivity is greater than 1015In the heat conductive insulating round tube of the silicon nitride ceramics of Ω cm, another is separately put on
The heat conductive insulating round tube of beryllium oxide ceramics 10mm bigger than aforementioned heat conductive insulating round tube diameter, heating material be filled in two it is thermally conductive
It insulate in round tube, then constitutes insulating layer in the aeroge that heat conductive insulating outer tube layer wraps tightly one layer of 3mm thickness, is i.e. thermal cell has been equipped
Finish, thermal cell is fitted into the titanium alloy barrel body of 190mm height, activates electric discharge, activationary time after 6h is stored at+60 DEG C
0.71s, crest voltage 294.3V, under 250A pulse current, the pulse voltage of 45s is 160.1V.
Claims (8)
1. a kind of electrode system and the independent slim thermal cell of heating system, including electrode system and heating system, feature exist
In: heating system is wrapped up by thermally conductive insulating layer, and heating system gives electrode system heat supply from surrounding.
2. a kind of electrode system according to claim 1 and the independent slim thermal cell of heating system, it is characterised in that: institute
The preparation method for stating electrode system is pressing or hot spray process.
3. a kind of electrode system according to claim 2 and the independent slim thermal cell of heating system, it is characterised in that: institute
Stating the process of pressing is that positive electrode, diaphragm material, negative electrode material and collector is tabletted in a manner of cold pressing respectively, then
A monomer battery structure is formed by sequentially stacking gradually up and down for positive electrode, diaphragm material, negative electrode material and collector, it is single
Body battery structure stacks to form electrode system.
4. a kind of electrode system according to claim 2 and the independent slim thermal cell of heating system, it is characterised in that: institute
The process for stating hot spray process is that negative electrode material is pressed into piece, and positive electrode is sprayed in collector one side, then by diaphragm material
It is sprayed on positive electrode, last negative electrode material piece, which is placed under diaphragm material to stack, forms a monomer battery structure, monomer electricity
Pool structure stacks to form electrode system.
5. a kind of electrode system according to claim 3 or 4 and the independent slim thermal cell of heating system, feature exist
In: the active material of the positive electrode is alloy cpd FexCo1-xS2、FexNi1-xS2、CoxNi1-xS2Or FexCoyNi1-x- yS2One of, 0 < x <, 1,0 < x+y < 1.
6. a kind of electrode system according to claim 1 and the independent slim thermal cell of heating system, it is characterised in that: institute
The shape for stating electrode system is solid cylindricality or hollow cylindrical.
7. a kind of electrode system according to claim 1 and the independent slim thermal cell of heating system, it is characterised in that: institute
State thermally conductive insulating layer material be beryllium oxide, aluminium oxide, aluminium nitride, boron nitride or silicon nitride one or more of compositions it is compound
Material.
8. a kind of electrode system according to claim 3 or 4 and the independent slim thermal cell of heating system, feature exist
In: the material of the collector is graphite, stainless steel, metallic nickel and its alloy or metallic copper and its alloy.
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| CN109607533A (en) * | 2019-01-28 | 2019-04-12 | 贵州梅岭电源有限公司 | A kind of preparation method of the big mesoporous activated carbon of stalactite |
| CN109837806A (en) * | 2019-03-19 | 2019-06-04 | 贵州梅岭电源有限公司 | A method of it promoting Kindling paper and prepares safety |
| CN110120495A (en) * | 2019-04-12 | 2019-08-13 | 贵州梅岭电源有限公司 | A kind of composite positive pole and preparation method and application reducing self discharge degree |
| CN110224151A (en) * | 2019-05-13 | 2019-09-10 | 贵州梅岭电源有限公司 | A kind of relay-type thermal cell |
| CN110344797A (en) * | 2019-07-10 | 2019-10-18 | 西南石油大学 | A kind of electric heater unit that underground high temperature is controllable and method |
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| CN112234221A (en) * | 2020-10-15 | 2021-01-15 | 贵州梅岭电源有限公司 | Thermal battery based on enhanced heat transfer |
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| CN114824664A (en) * | 2022-02-25 | 2022-07-29 | 中国电子科技集团公司第十八研究所 | Thermal buffer layer base material and application method thereof in thermal battery |
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| CN109607533A (en) * | 2019-01-28 | 2019-04-12 | 贵州梅岭电源有限公司 | A kind of preparation method of the big mesoporous activated carbon of stalactite |
| WO2020155856A1 (en) | 2019-01-28 | 2020-08-06 | 贵州梅岭电源有限公司 | Method for preparing stalactite-like macroporous activated carbon |
| CN109837806A (en) * | 2019-03-19 | 2019-06-04 | 贵州梅岭电源有限公司 | A method of it promoting Kindling paper and prepares safety |
| CN110120495A (en) * | 2019-04-12 | 2019-08-13 | 贵州梅岭电源有限公司 | A kind of composite positive pole and preparation method and application reducing self discharge degree |
| CN110120495B (en) * | 2019-04-12 | 2022-02-11 | 贵州梅岭电源有限公司 | Composite positive electrode material capable of reducing self-discharge degree, and preparation method and application thereof |
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| CN110344797A (en) * | 2019-07-10 | 2019-10-18 | 西南石油大学 | A kind of electric heater unit that underground high temperature is controllable and method |
| CN110890564A (en) * | 2019-11-29 | 2020-03-17 | 贵州梅岭电源有限公司 | Preparation method of co-heating multi-monomer for thermal battery |
| CN110890564B (en) * | 2019-11-29 | 2021-01-05 | 贵州梅岭电源有限公司 | Preparation method of co-heating multi-monomer for thermal battery |
| CN112234221A (en) * | 2020-10-15 | 2021-01-15 | 贵州梅岭电源有限公司 | Thermal battery based on enhanced heat transfer |
| CN114824664A (en) * | 2022-02-25 | 2022-07-29 | 中国电子科技集团公司第十八研究所 | Thermal buffer layer base material and application method thereof in thermal battery |
| CN114597433A (en) * | 2022-03-02 | 2022-06-07 | 贵州梅岭电源有限公司 | Composite sheet structure for reducing activation time of thermal battery and preparation method thereof |
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