CN102867970A - Preparation and test method for unit cell of thermal battery - Google Patents
Preparation and test method for unit cell of thermal battery Download PDFInfo
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- CN102867970A CN102867970A CN2012103605505A CN201210360550A CN102867970A CN 102867970 A CN102867970 A CN 102867970A CN 2012103605505 A CN2012103605505 A CN 2012103605505A CN 201210360550 A CN201210360550 A CN 201210360550A CN 102867970 A CN102867970 A CN 102867970A
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Abstract
A preparation and test method for a unit cell of a thermal battery includes sequentially spreading cathode powder and electrolyte powder on base material, and performing compression moulding by a tablet compression machine to obtain a cathode electrolyte composite layer; spreading anode powder on the base material, and performing compression moulding by the tablet compression machine to obtain an anode; and assembling the unit cell , and performing discharge test to the unit cell. The preparation and test method for the unit cell of the thermal battery overcomes many defects of the existing thermal battery test method, a large amount of production raw materials and time are saved, labor is reduced, a tablet compression die is not required, preparation cost is reduced greatly, influence of a single factor on discharge performance of the thermal battery is more convenient to research, and the thermal battery has huge use value.
Description
Technical field
The present invention relates to the thermal cell technical field, be specifically related to preparation and the discharge test method thereof of single cell of thermo battery.
Background technology
Thermal cell claims again the hot activation reserve cell, is a kind of high temperature deposit primary cell, and it is to utilize the heating system of battery itself that nonconducting solid-state salt electrolyte heating and melting is ionic conductor and enters a kind of thermally activated battery of operating state.It forms by pile, heating system, insulating pad, battery case with battery cover of binding post etc.Wherein pile is that cell comprises positive plate, negative plate, electrolyte sheet and sheet collector, and it is the core component of thermal cell, and its performance quality has directly determined the performance quality of thermal cell.Thermal cell has the advantages such as larger specific power and specific energy, short, the anti-severe rugged environment condition of activationary time, period of storage are long, so it is widely used in all kinds of tactical missiles, cruise missile, nuclear weapon and various advanced persons' the advanced weaponries such as bomb.Pressed powder technique is mainly adopted in the at present preparation of single cell of thermo battery, and namely positive plate, negative plate, electrolyte sheet are compressing or once compressing by three shop powder by spreading powder respectively.The labour that this arts demand is a large amount of and higher die cost are so that the production cost of thermal cell is high.
The discharge performance test of current thermal cell mainly is to discharge by being assembled into thermal cell group or cell.Carry out discharge test and not only need a large amount of labours and raw materials for production by being assembled into the thermal cell group, cause the rapid increase of research cost, and be unfavorable for studying single factor to the impact of thermal cell discharge performance.Carry out the discharge performance test by being assembled into cell, not only saved a large amount of raw materials, time and reduced the labour, but also can study more targetedly single factors to the impact of thermal cell discharge performance.But the preparation of current cell mainly is to utilize mould to carry out pressed powder, and this tabletting method easily causes the loss of mould, has increased preparation cost.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of convenient cell quick, time saving and energy saving, low-cost, that can study targetedly the thermal cell discharge performance to prepare and method of testing.
The technical scheme that adopts is:
The preparation of single cell of thermo battery of the present invention and assembling process in relative humidity less than 3%
Hothouse in operate, the preparation of its single cell of thermo battery comprises the preparation of anolyte composite bed, anodal preparation, the assembling of cell.
The preparation of described anolyte composite bed is put into setting with the basis material that cuts first
In the negative pole metal-back of diameter, then negative pole powder and electrolyte powder are layered on the basis material successively, complete the rear tablet press machine of using compressing, with negative pole powder and the compound anolyte composite bed of making of electrolyte powder.
The preparation of described positive pole is put into diameter relatively less than negative pole with the basis material that cuts first
In the cathode metal shell of metal-back, then positive powder is layered on the basis material, completes the rear tablet press machine of using compressing, make positive pole.
The assembling of described cell stacks up the anolyte composite bed for preparing and the positive pole for preparing, and namely is prepared into single cell of thermo battery.
The discharge test method of single cell of thermo battery, two insulation spacers are embedded in respectively on two metal fixtures, the cell for preparing is clipped between two insulation spacers, the cathode metal shell of cell and negative pole metal-back respectively connect the plain conductor with certain-length, at last two metal fixtures are screwed down.The cell that is contained on the metal fixture is placed in the tube furnace, passes into high-purity argon gas, be heated to uniform temperature and carry out discharge test.
Above-mentioned basis material is porous conductive material or the flexible graphite paper of foam or netted copper, nickel, chromium, silver and alloy thereof.
Above-mentioned cathode metal shell and negative pole metal-back are the metal-back of stainless steel, nickel, copper and alloy thereof.
Above-mentioned cathode metal shell and negative pole metal-back, the ratio of its metal-back height and diameter can be between 0.15-0.17.
Above-mentioned negative pole powder is lithium-aluminium alloy, lithium silicon alloy or lithium boron alloy.
Above-mentioned electrolyte powder is binary, ternary or polynary eutectic point electrolyte.
Above-mentioned positive powder is metal sulfide, metal oxide or metal chloride.
Above-mentioned metal fixture material is silver, copper, stainless steel.
Above-mentioned insulation spacer material is mica sheet, ceramic paper.
Above-mentioned plain conductor is gold thread, silver-colored line, platinum line, copper cash.
Beneficial effect of the present invention is:
1 because the method does not need to be assembled into the thermal cell group and carries out discharge test, has therefore improved widely efficiency and has reduced production cost.
2 because the method does not need high-precision mold, so cost further reduces.
3 owing to the factor of the cell discharge performance that affects the method preparation is less, therefore can study efficiently single factor to the impact of thermal cell discharge performance.
4 the method are not confined to pressed powder, are equally applicable to the method by membrane electrode or the composite film electrode of brushing or spraying prepares.
Description of drawings
Fig. 1 is the monomer battery structure schematic diagram that the present invention prepares.
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Fig. 3 is the structural representation of cell discharge test anchor clamps of the present invention.
Fig. 4 is that cell of the present invention is contained in the structural representation on the test fixture.
Fig. 5 is embodiment one cell 100mA/cm
2The constant-current discharge curve.
Fig. 6 is embodiment two cell 100mA/cm
2The constant-current discharge curve.
Fig. 7 is embodiment three cell 100mA/cm
2The constant-current discharge curve.
Embodiment
Embodiment one
The preparation of single cell of thermo battery operates in less than 3% hothouse in relative humidity, comprises the preparation of anolyte composite bed, anodal preparation, the assembling of cell.
The preparation of described anolyte composite bed 2
Be that the circular nickel foam substrate material 4 of 19mm is put into the button-shaped stainless steel negative pole metal-back 3 that diameter is 20mm with the diameter that cuts, the ratio of described negative pole metal-back height and diameter is 0.17.Again lithium silicon alloy negative pole powder 5(is contained 10%KCl) and LiCl-KCl), congruent melting salt electrolyte 6(mass ratio LiCl:KCl=45:55) be layered on successively on the nickel foam, complete rear with tablet press machine compressing with the pressure of 10MPa, make anolyte composite bed 2.
The preparation of described positive pole
Be that the circular nickel foam substrate material 4 of 12mm is put into the button-shaped stainless steel cathode metal shell 8 that diameter is 13mm with the diameter that cuts, the ratio of described cathode metal shell height and diameter is 0.15.Again with FeS
2Positive powder 7(contains 20%LiCl-KCl congruent melting salt electrolyte and 3% carbon nano-tube) be layered on the nickel foam, compressing with the pressure of 10MPa with tablet press machine, make anodal 1.
The assembling of described cell stacks up the anolyte composite bed 2 for preparing and the positive pole 1 for preparing, and namely is prepared into single cell of thermo battery.
The discharge test method of single cell of thermo battery is placed on two copper anchor clamps 9 that are embedded with mica sheet with the cell for preparing middle, and two bullion lines are drawn from cathode metal shell and negative pole metal-back respectively.Four screw tightenings of two copper anchor clamps, 9 usefulness, then put it into tube furnace, pass into high-purity argon gas, be heated to 450 ℃ of discharges.Fig. 5 is cell 100mA/cm
2The constant-current discharge curve.The test result demonstration, crest voltage is 1.82V, and discharge platform is at 1.78V-1.79V, and the specific capacity when being discharged to 1.5V is 319.9mAh/g.
Embodiment two
The preparation of anolyte composite bed
Be that the circular foam copper basis material 4 of 19mm is put into the button-shaped copper negative pole metal-back 3 that diameter is 20mm with the diameter that cuts, again lithium silicon alloy negative pole powder 5(is contained 10%KCl) and LiCl-LiBr-LiF congruent melting electrolyte 6 be layered on successively on the foam copper, compressing with the pressure of 10MPa with tablet press machine after spreading, make anolyte composite bed 2.
Anodal preparation
Be that the circular foam copper basis material 4 of 12mm is put into the button-shaped copper cathode metal shell 8 that diameter is 13mm with the diameter that cuts, then with CoS
2Positive powder 7(contains 25%LiCl-KCl congruent melting salt electrolyte, 3% carbon nano-tube and 1%LiSi powder) be layered on the foam copper, compressing with the pressure of 10MPa with tablet press machine after spreading, make anodal 1.
The assembling of cell
The anolyte composite bed 2 for preparing and the positive pole 1 for preparing are stacked up, namely be prepared into single cell of thermo battery.
The discharge test method of single cell of thermo battery is placed on two copper anchor clamps 9 that are embedded with mica sheet with the cell for preparing middle, and two bullion lines are drawn from cathode metal shell and negative pole metal-back respectively.Four screw tightenings of two copper anchor clamps, 9 usefulness, then put it into tube furnace, pass into high-purity argon gas, be heated to 500 ℃ of discharges.Fig. 6 is cell 100mA/cm
2The constant-current discharge curve.The test result demonstration, crest voltage is 1.82V, and the first discharge platform is at 1.81V-1.82V, and the specific capacity when being discharged to 1.8V is 79.1mAh/g, and the specific capacity when being discharged to 1.4V is 458.6mAh/g.
Embodiment three
The preparation of anolyte composite bed
Be that the circular nickel foam substrate material 4 of 19mm is put into the button-shaped stainless steel negative pole metal-back 3 that diameter is 20mm with the diameter that cuts, again lithium silicon alloy negative pole powder 5(is contained 8%KCl) and LiCl-KCl congruent melting electrolyte 6 be layered on successively on the nickel foam, compressing with the pressure of 10MPa with tablet press machine after spreading, make anolyte composite bed 2.
Anodal preparation
Utilize the method for silk screen printing, with CoS
2Powder (contains 20%LiCl-KCl congruent melting salt electrolyte, 3% carbon nano-tube and 1% aeroge SiO
2) mix rear brush on foam copper, be cut into the disk that diameter is 16mm after the vacuumize, make positive pole.
The assembling of cell
The anolyte composite bed 2 for preparing and the positive pole 1 for preparing are stacked up, namely be prepared into single cell of thermo battery.
The discharge test method of single cell of thermo battery is placed on two copper anchor clamps 9 that are embedded with mica sheet with the cell for preparing middle, and two bullion lines are drawn from cathode metal shell and negative pole metal-back respectively.Four screw tightenings of two copper anchor clamps, 9 usefulness, then put it into tube furnace, pass into high-purity argon gas, be heated to 450 ℃ of discharges.Fig. 7 is cell 100mA/cm
2The constant-current discharge curve.The test result demonstration, crest voltage is 1.82V, and discharge platform is about 1.79V, and the specific capacity when being discharged to 1.5V is 320mAh/g.
Claims (10)
- The preparation of single cell of thermo battery and assembling process in relative humidity less than 3%Operate in the hothouse, the preparation of its single cell of thermo battery, comprise the preparation of anolyte composite bed, anodal preparation, the assembling of cell, it is characterized in that the preparation of described anolyte composite bed (2), first the basis material (4) that cuts is put into the negative pole metal-back (3) of setting diameter, again negative pole powder (5) and electrolyte powder (6) are layered on the basis material (4) successively, complete the rear tablet press machine of using compressing, with negative pole powder and the compound anolyte composite bed (2) of making of electrolyte powder; The preparation of described positive pole is put into the basis material (4) that cuts first diameter relatively less than the cathode metal shell (8) of negative pole metal-back, positive powder (7) is layered on the basis material (4) again, completes the rear tablet press machine of using compressing, makes positive pole (1); The assembling of described cell stacks up the anolyte composite bed (2) for preparing and the positive pole (1) for preparing, and namely is prepared into single cell of thermo battery.
- 2. the discharge test method of single cell of thermo battery, it is characterized in that two insulation spacers are embedded in respectively on two metal fixtures (9), the cell for preparing is clipped between two insulation spacers, the cathode metal shell of cell and negative pole metal-back connect respectively the plain conductor with certain-length, at last two metal fixtures (9) are screwed down, the cell that is contained on the metal fixture is placed in the tube furnace, passes into high-purity argon gas, be heated to uniform temperature and carry out discharge test.
- 3. the preparation of single cell of thermo battery according to claim 1 is characterized in thatDescribed basis material (4) is the porous of foam or netted copper, nickel, chromium, silver and alloy thereofElectric conducting material or flexible graphite paper.
- 4. the preparation of single cell of thermo battery according to claim 1 is characterized in that described cathode metal shell (8) and negative pole metal-back (3) are the metal-back of stainless steel, nickel, copper and alloy thereof.
- 5. according to the preparation of claim 1 or 4 described single cell of thermo battery, it is characterized in that described cathode metal shell (8) and negative pole metal-back (3), the ratio of its metal-back height and diameter can be between 0.15-0.17.
- 6. the preparation of single cell of thermo battery according to claim 1 is characterized in that described negative pole powder (5) is lithium-aluminium alloy, lithium silicon alloy or lithium boron alloy.
- 7. the preparation of single cell of thermo battery according to claim 1 is characterized in that described electrolyte powder (6) is binary, ternary or polynary eutectic point electrolyte.
- 8. the preparation of single cell of thermo battery according to claim 1 is characterized in that described positive powder (7) is metal sulfide, metal oxide or metal chloride.
- 9. the discharge test method of single cell of thermo battery according to claim 2 is characterized in that described metal fixture (9) material is silver, copper, stainless steel.
- 10. the discharge test method of single cell of thermo battery according to claim 2 is characterized in that described insulation spacer material is mica sheet, ceramic paper; Described plain conductor is gold thread, silver-colored line, platinum line, copper cash.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676031B (en) * | 2016-02-05 | 2018-09-21 | 株洲升华科技有限公司 | Lithium ion battery electrode material electric performance testing device and battery production method |
| CN109135684A (en) * | 2018-09-21 | 2019-01-04 | 贵州梅岭电源有限公司 | A kind of thermal cell composite phase-change material and preparation method thereof |
| CN109298338A (en) * | 2018-09-19 | 2019-02-01 | 沈阳君威新能科技有限公司 | A kind of single cell of thermo battery test device and single battery test method |
| CN114927636A (en) * | 2022-05-16 | 2022-08-19 | 中国工程物理研究院电子工程研究所 | Flexible electrode plate of thermal battery, preparation method of flexible electrode plate and thermal battery |
| CN116581290A (en) * | 2023-07-10 | 2023-08-11 | 北京精仪天和智能装备有限公司 | Silicon carbide negative electrode material molten salt thermal battery and preparation and testing methods thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676031B (en) * | 2016-02-05 | 2018-09-21 | 株洲升华科技有限公司 | Lithium ion battery electrode material electric performance testing device and battery production method |
| CN109298338A (en) * | 2018-09-19 | 2019-02-01 | 沈阳君威新能科技有限公司 | A kind of single cell of thermo battery test device and single battery test method |
| CN109298338B (en) * | 2018-09-19 | 2020-11-24 | 沈阳君威新能科技有限公司 | Thermal battery single battery testing device and single battery testing method |
| CN109135684A (en) * | 2018-09-21 | 2019-01-04 | 贵州梅岭电源有限公司 | A kind of thermal cell composite phase-change material and preparation method thereof |
| CN109135684B (en) * | 2018-09-21 | 2020-10-27 | 贵州梅岭电源有限公司 | Composite phase change material for thermal battery and preparation method thereof |
| CN114927636A (en) * | 2022-05-16 | 2022-08-19 | 中国工程物理研究院电子工程研究所 | Flexible electrode plate of thermal battery, preparation method of flexible electrode plate and thermal battery |
| CN116581290A (en) * | 2023-07-10 | 2023-08-11 | 北京精仪天和智能装备有限公司 | Silicon carbide negative electrode material molten salt thermal battery and preparation and testing methods thereof |
| CN116581290B (en) * | 2023-07-10 | 2023-10-13 | 北京精仪天和智能装备有限公司 | Silicon carbide negative electrode material molten salt thermal battery and preparation and testing methods thereof |
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Application publication date: 20130109 |