CN102244206A - Formula of heating powder for thermal battery - Google Patents
Formula of heating powder for thermal battery Download PDFInfo
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- CN102244206A CN102244206A CN2011101539966A CN201110153996A CN102244206A CN 102244206 A CN102244206 A CN 102244206A CN 2011101539966 A CN2011101539966 A CN 2011101539966A CN 201110153996 A CN201110153996 A CN 201110153996A CN 102244206 A CN102244206 A CN 102244206A
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- Prior art keywords
- powder
- thermal battery
- melting salt
- congruent melting
- heating
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Abstract
The invention discloses a formula of heating powder for a thermal battery. An eutectic salt accounting for 7-12% of the total weight is added into the heating powder for a thermal battery formed by mixing iron powder and potassium perchlorate. The weight ratio of iron powder to potassium perchlorate is 84:16, 83:17 or 82:18. The eutectic salt is the mixture of NaCl and Li2SO4, wherein the NaCl accounts for 38-45% of the weight of the eutectic salt, and the Li2SO4 accounts for 55-62%. The formula can prolong the service life of the thermal battery so as to prolong the working life of the thermal battery.
Description
Technical field
The present invention relates to a kind of thermal cell heating powder prescription.
Background technology
Thermal cell is the hot activation reserve cell, and it is to make electrolyte with fused salt, utilizes thermal source to make its fusing and the disposable reserve cell that activates, and internal temperature is at 450 ℃～550 ℃ during work.Because the thermal cell internal resistance is little, have very high specific energy and specific power, the environment for use temperature is wide, period of storage long, it is reliable rapidly to activate, the non-directional influence that is not subjected to installation position when compact conformation, use, have the good mechanical performance, do not need advantage such as maintenance.
The present LiSi/FeS that uses
2The system thermal cell, the input activation signal discharges a large amount of heat after igniting and heating powder immediately, no longer includes heat thereafter and emits, and the temperature in the battery pile is kept by insulation fully, makes that the thermal life in the battery pile is shorter.And the thermal life is a key factor of decision thermal cell working life, and it has limited the working life of thermal cell.The present this defective that adds following two aspects of thermal design existence:
The first activates abrupt release and goes out a large amount of heat, makes FeS
2Instantaneous temperature around anodal is apparently higher than its decomposition temperature, to FeS
2Form bigger thermal shock, cause FeS
2Decompose, influence output capacity;
It two is to activate incipient stage heat surplus and the later stage shortage of heat, and heat distribution is unbalanced, influences the thermal life.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of thermal cell with heating powder prescription, by improving the prescription of existing heating powder, improve the heat way of output, thereby prolong the thermal life of thermal cell.
Technical scheme of the present invention is: mix with the strong oxidizer potassium hyperchlorate at the strong reductant iron powder and add a certain proportion of congruent melting salt in the heating powder of forming, mix the back by ball milling and use as the heating powder.
The weight proportion of iron powder and potassium hyperchlorate is 84 ︰ 16 or 83 ︰ 17 or 82 ︰ 18.
Described congruent melting salt is NaCl and Li
2SO
4Mixture, NaCl percentage by weight 38%～45% in the congruent melting salt, Li
2SO
4Percentage by weight 55%～62%.
The present invention is by selecting suitable congruent melting salt to reach to adjust the purpose of heat in the battery for use, and congruent melting salt has that enthalpy change is big, fusing point is lower than the anodal decomposition temperature of thermal cell.Iron powder and potassium hyperchlorate mix ignite moment its temperature of heating powder and reach about 1000 ℃, after adding congruent melting salt, when temperature is elevated to congruent melting salt fusing point (499 ℃), fused salt undergoes phase transition heat absorption, stop temperature to continue to rise, thereby avoid occurring high temperature anodal FeS
2Thermal shock, improve anodal utilance.
The present invention is by adding congruent melting salt in the heating powder that iron powder mixes with potassium hyperchlorate, when heat is superfluous in thermal cell, the congruent melting salt decalescence that adds, heat is stored, when temperature in the thermal cell is reduced near congruent melting salt fusing point, congruent melting salt generation liquid phase plays the effect that prolongs the thermal cell thermal life to the solid transformation heat release.
The present invention compared with prior art, improve heating powder prescription after, the operating time is longer, fail safe is higher.
Embodiment
Embodiments of the invention:
Embodiment one, and a kind of mass percent that heats the powder prescription consists of: iron powder (Fe) is 76.5%, potassium hyperchlorate (KClO
4) be 14.5%, congruent melting salt (NaCl-Li
2SO
4) be 9%.Wherein the mass percent of congruent melting salt consists of: lithium sulfate account for 58.3% and sodium chloride account for 41.7%.
Embodiment two, and a kind of mass percent that heats the powder prescription consists of: iron powder (Fe) is 74%, potassium hyperchlorate (KClO
4) be 15%, congruent melting salt (NaCl-Li
2SO
4) be 11%.Wherein the mass percent of congruent melting salt consists of: lithium sulfate account for 58.3% and sodium chloride account for 41.7%.
Embodiment three, and a kind of mass percent that heats the powder prescription consists of: iron powder (Fe) is 72%, potassium hyperchlorate (KClO
4) be 16%, congruent melting salt (NaCl-Li
2SO
4) be 12%.Wherein the mass percent of congruent melting salt consists of: lithium sulfate account for 58.3% and sodium chloride account for 41.7%.
Among the above embodiment, composition of the present invention and percentage by weight are: iron powder (Fe) is 72%～82%, potassium hyperchlorate (KClO
4) be 12%～16%, congruent melting salt is 7%～12%.The compound method of congruent melting salt is, in lithium sulfate account for 38%～45% and sodium chloride account for 55%～62% ratio and take by weighing lithium sulfate and sodium chloride through 150 ℃ of dry 6h～8h, after 560 ℃ of sintering melt altogether, solidify, pulverize, can use.
Claims (3)
1. a thermal cell is characterized in that with heating powder prescription: to account for percentage by weight be 7～12% congruent melting salt with heating adding in the powder to mix the thermal cell formed with potassium hyperchlorate at iron powder.
2. thermal cell according to claim 1 is with heating the powder prescription, and it is characterized in that: the weight proportion of iron powder and potassium hyperchlorate is 84 ︰ 16 or 83 ︰ 17 or 82 ︰ 18.
3. the thermal cell according to claim 1 prescription of heating powder, it is characterized in that: described congruent melting salt is NaCl and Li
2SO
4Mixture, NaCl percentage by weight 38%～45% in the congruent melting salt, Li
2SO
4Percentage by weight 55%～62%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101539966A CN102244206A (en) | 2011-06-09 | 2011-06-09 | Formula of heating powder for thermal battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101539966A CN102244206A (en) | 2011-06-09 | 2011-06-09 | Formula of heating powder for thermal battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102244206A true CN102244206A (en) | 2011-11-16 |
Family
ID=44962143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101539966A Pending CN102244206A (en) | 2011-06-09 | 2011-06-09 | Formula of heating powder for thermal battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102244206A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978767A (en) * | 2017-12-06 | 2018-05-01 | 贵州梅岭电源有限公司 | A kind of thermal cell sulfenyl electrolyte preparation method |
| CN108832150A (en) * | 2018-06-21 | 2018-11-16 | 上海空间电源研究所 | A kind of temperature adjustment type thermal cell heating material and preparation method thereof |
| 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 |
| CN109438148A (en) * | 2018-10-18 | 2019-03-08 | 贵州梅岭电源有限公司 | A kind of thermal cell activation high burn rate pyrotechnic compound and preparation method and application |
| CN109546173A (en) * | 2018-11-01 | 2019-03-29 | 贵州梅岭电源有限公司 | A kind of heating material preparation method and applications of thermal cell consistent heat generation |
| CN111354954A (en) * | 2020-03-23 | 2020-06-30 | 贵州梅岭电源有限公司 | Novel fluorine ion thermal battery and preparation method thereof |
| CN111969140A (en) * | 2020-08-17 | 2020-11-20 | 贵州梅岭电源有限公司 | High-specific-performance thermal battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3677822A (en) * | 1970-10-23 | 1972-07-18 | Atomic Energy Commission | Thermal battery having a thermal reservoir pellet |
| JPS61101963A (en) * | 1984-10-23 | 1986-05-20 | Matsushita Electric Ind Co Ltd | Thermocell |
| JPH01115064A (en) * | 1987-10-28 | 1989-05-08 | Matsushita Electric Ind Co Ltd | Manufacture of heat storage layer for thermal battery |
| JPH02299160A (en) * | 1989-05-12 | 1990-12-11 | Matsushita Electric Ind Co Ltd | Thermal battery |
-
2011
- 2011-06-09 CN CN2011101539966A patent/CN102244206A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3677822A (en) * | 1970-10-23 | 1972-07-18 | Atomic Energy Commission | Thermal battery having a thermal reservoir pellet |
| JPS61101963A (en) * | 1984-10-23 | 1986-05-20 | Matsushita Electric Ind Co Ltd | Thermocell |
| JPH01115064A (en) * | 1987-10-28 | 1989-05-08 | Matsushita Electric Ind Co Ltd | Manufacture of heat storage layer for thermal battery |
| JPH02299160A (en) * | 1989-05-12 | 1990-12-11 | Matsushita Electric Ind Co Ltd | Thermal battery |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978767A (en) * | 2017-12-06 | 2018-05-01 | 贵州梅岭电源有限公司 | A kind of thermal cell sulfenyl electrolyte preparation method |
| CN108832150A (en) * | 2018-06-21 | 2018-11-16 | 上海空间电源研究所 | A kind of temperature adjustment type thermal cell heating material and preparation method thereof |
| 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 |
| CN109438148A (en) * | 2018-10-18 | 2019-03-08 | 贵州梅岭电源有限公司 | A kind of thermal cell activation high burn rate pyrotechnic compound and preparation method and application |
| CN109546173A (en) * | 2018-11-01 | 2019-03-29 | 贵州梅岭电源有限公司 | A kind of heating material preparation method and applications of thermal cell consistent heat generation |
| CN111354954A (en) * | 2020-03-23 | 2020-06-30 | 贵州梅岭电源有限公司 | Novel fluorine ion thermal battery and preparation method thereof |
| CN111969140A (en) * | 2020-08-17 | 2020-11-20 | 贵州梅岭电源有限公司 | High-specific-performance thermal battery |
| CN111969140B (en) * | 2020-08-17 | 2021-04-06 | 贵州梅岭电源有限公司 | High-specific-performance thermal battery |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111116 |
|
| RJ01 | Rejection of invention patent application after publication |