CN102263274A - Method for preparing split-type structured monomer battery of thermal battery - Google Patents
Method for preparing split-type structured monomer battery of thermal battery Download PDFInfo
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- CN102263274A CN102263274A CN201110168063A CN201110168063A CN102263274A CN 102263274 A CN102263274 A CN 102263274A CN 201110168063 A CN201110168063 A CN 201110168063A CN 201110168063 A CN201110168063 A CN 201110168063A CN 102263274 A CN102263274 A CN 102263274A
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Abstract
The invention relates to a method for preparing a split-type structured monomer battery of a thermal battery. The operation is carried out in a drying room, and the method is characterized by the inclusion of the following preparation steps of: firstly, preparing a cathode layer; secondly, preparing a multi-electrode layer; thirdly, preparing a heating agent layer; and fourthly, overlying the prepared cathode layer, the multi-electrode layer and the heating agent layer in sequence to prepare split-type structured monomer battery of a thermal battery. Since the integral structure of a monomer battery is changed into the split-type structure, the battery melting speed is greatly accelerated; various electrode materials are adopted to be respectively pressed, no high-precision die and constant maintenance are required, trimmed edges can be guaranteed, short circuit and electric noises can be prevented, cost is reduced, and the processing is facilitated; with the adoption of the multi-electrode layer formed by three-layer electrodes of heating agent, anode material and electrolyte material, the strength of the monomer battery can be improved, and the monomer battery is suitable for volume production; and a heating plate as a component independent from a main body, the flexible adjustment of parameters of the method is facilitated according to the performance of batteries.
Description
Technical field
The invention belongs to the thermal cell technical field, particularly relate to a kind of thermal cell split-type structural cell preparation method.
Background technology
Thermal cell is a heat activated molten salt electrolyte battery.Make electrolyte with fuse salt, electrolyte is solid-state at normal temperatures, and is non-conductive; By activating mechanism, light the inside battery heating source during use, fused electrolyte dissolves immediately and conducts electricity, and is battery activated, the output electric energy.
Thermal cell commonly used at present mainly adopts cup type structure cell and slice structure cell, the slice structure cell mainly is integrated to suppress by positive electrode, electrolyte, negative material and forms, or with main body heating agent and above-mentioned three kinds of material one compacting; The method of three kinds or four kinds battery material one compactings can improve thermal cell production efficiency, economical with materials, and be easy to control, easy and simple to handle in process of production, the cell intensity after the moulding is better, but activationary time is long relatively.For improving the battery activated time, usually sheet type structure cell is extended and become chip-die-cut structure cell.
Chip-die-cut structure cell can the Flashmelt cell, improve the activationary time of battery, but the weak point of its preparation method is: for guaranteeing that the edge is neat, reducing burr, prevent short circuit and electric noise, need use high-precision mold during preparation and need and often safeguard, improve the difficulty of processing of cost and mould; Intensity is relatively poor after the thin cell punching molding, is not suitable for producing in batches; Can't adjust parameter according to the battery performance situation, can influence the preparation of cell and the die-cut effect of cell, cause the thermal cell unstable properties.
Summary of the invention
The present invention is for solving problems of the prior art, provide a kind of cost low, be convenient to processing; Satisfy cell intensity needs, be fit to produce in batches; Be convenient to adjust machined parameters flexibly, finally guarantee the thermal cell split-type structural cell preparation method of thermal cell stable performance according to battery performance.
The technical solution used in the present invention is:
Thermal cell split-type structural cell preparation method, preparation process is operated in the drying room of relative humidity below 4%, is characterized in comprising following preparation process:
(1) negative electrode layer preparation:
Wire netting and flow collection sheet are welded together to form compound flow collection sheet; According to the thermal cell size, metal alloy film is die-cut into disk as negative material with the punch die of respective diameters; Compound flow collection sheet is placed in the compressing tablet mould, puts into negative material again, use press compression moulding, the demoulding is negative electrode layer after taking out;
(2) multi-electrode layer preparation
According to the proportioning of mass ratio 0.05-1:0.01-1:0.05-1.5 respectively weighing positive electrode, electrolyte, add the medicine of a warm nature; According to thermal cell size needs, the die sleeve of electrolyte being put into corresponding size with the hydraulic press compacting after, put into the positive electrode compacting, will add the medicine of a warm nature and put into compacting again on the positive powder, the demoulding is the multi-electrode layer after taking out;
(3) heating agent layer preparation
According to thermal cell size needs, will add the medicine of a warm nature and put into mould, after the hydraulic press compacting, the demoulding is the heating agent layer after taking out;
(4) negative electrode layer, multi-electrode layer, the heating agent layer for preparing stacked up in order, promptly be prepared into thermal cell split-type structural cell.
The present invention can also take following technical scheme:
Described thermal cell split-type structural cell preparation method is characterized in: wire netting is the nickel wire net in the described step (1); Described flow collection sheet is a stainless steel material; The nickel wire site is welded in flow collection sheet central authorities, greater than 6 solder joints.
Described thermal cell split-type structural cell preparation method is characterized in: negative material is the LiB alloy of surperficial deoxidation layer in the described step (1).
Described thermal cell split-type structural cell preparation method is characterized in: positive electrode is a cobalt disulfide in the described step (2).
Described thermal cell split-type structural cell preparation method is characterized in: electrolyte is full lithium electrolyte in the described step (2).
Described thermal cell split-type structural cell preparation method is characterized in: the described medicine of a warm nature that adds is an iron powder.
Advantage and good effect that the present invention has are:
1, the preparation method of thermal cell split-type structural cell changes the integrative-structure of cell into split-type structural, and the cell of this structure has been accelerated the speed of battery fusion greatly.
2, owing to adopted various electrode materials to suppress respectively, do not need to use high-precision mold, do not need frequent maintenance, can guarantee that equally the edge is neat, prevent short circuit and electric noise, reduced cost, be convenient to processing.
3, owing to adopt the multi-electrode layer of heating agent, positive electrode, electrolyte triple electrode, improved cell intensity, be fit to produce in batches.
4, as benchmark, so heating plate helps according to the flexible method of adjustment parameter of the performance of battery as the part independent subject heating component of cell because battery uses the main body heating source of heating agent as battery, and with the multi-electrode layer.
Description of drawings
Fig. 1 is a negative electrode layer schematic diagram of the present invention;
Fig. 2 is a multi-electrode layer schematic diagram of the present invention;
Fig. 3 is a heating agent layer schematic diagram of the present invention;
Fig. 4 is a cell schematic diagram of the present invention.
Among the figure, 1-flow collection sheet, 2-fixed band, 3-negative pole, 4-electrolyte, 5-positive pole, 6-heating agent, 7-heating agent layer.
Embodiment
For further understanding technology contents of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Consult accompanying drawing 1-accompanying drawing 4.
Embodiment 1
The preparation method of thermal cell split-type structural monomer thermal cell carries out in the drying room of relative humidity below 4%, and operating procedure is as follows:
1, negative electrode layer preparation
Wire netting with the nickel wire net materials shown in Figure 1 is cut into square as fixed band 2, and the flow collection sheet made from stainless steel material 1 welds together, and the fixed band point is welded in flow collection sheet central authorities, is no less than 6 solder joints, forms compound flow collection sheet;
With LiB alloy surface deoxidation layer as negative pole 3 wiped clean after, it is stand-by to use punch die with the flow collection sheet respective diameters that negative material is die-cut into disk;
Compound flow collection sheet is placed in the compressing tablet mould, puts into the negative pole that is die-cut into disk; The pressure compression moulding that is Φ 28mm～Φ 32mm with the corresponding cell diameter of 1-5 MPa with press promptly is prepared into negative electrode layer.Calculate proportion according to described press pressure and cell diameter, the negative electrode layer of different-diameter can be selected different pressure compactings for use, and the rest may be inferred.
2, multi-electrode layer preparation
Shown in Figure 2 according to table 1 or table 2 respectively the weighing cobalt disulfide as anodal 5, full lithium as electrolyte 4, iron powder as heating agent 6, the electrolyte powder that weighs up is poured in the shallow bid, take by weighing positive pole and heating agent with same weighing technique, the multi-electrode layer material proportioning of different-diameter size is calculated according to table 1 or table 2 ratio value, and the rest may be inferred.
Table 1 Φ 32mm
| Iron powder | Anodal | Electrolyte |
| 0.5±0.3g | 0.4±0.30g | 1.0±0.3g |
Table 2 Φ 28mm
| Iron powder | Anodal | Electrolyte |
| 0.4±0.3g | 0.3±0.3g | 0.8±0.3g |
Die cap in the compression mold of ready die sleeve, core rod and die cap composition is taken down, earlier electrolyte powder is put into mould, flatten, put into positive pole then, flatten, put into iron powder at last, flatten, add upper mould cover as heating agent; On the hydraulic press of 100t, be Φ 28mm～Φ 32mm compacting with the corresponding cell diameter of 3-10 MPa, the demoulding is taken off then, promptly is prepared into multi-electrode layer shown in Figure 2.The multi-electrode layer of different-diameter can calculate according to this pressure and cell diameter ratio, and the rest may be inferred.
3, heating agent layer preparation
Shown in Figure 3 iron powder being put into die sleeve, add upper mould cover, is Φ 28mm～Φ 32mm compacting with 1 MPa-5MPa to the cell diameter on the 100t hydraulic press, and the demoulding is taken off then, promptly prepares heating agent layer 7 shown in Figure 3.
4, the preparation of thermal cell split-type structural cell
Shown in Figure 4 is that multilayer split pattern electrode layer with the above-mentioned three kinds negative electrode layers that are prepared into-multi-electrode layer-heating agent layer stacks up in order, promptly is prepared into thermal cell split-type structural cell.
Claims (6)
1. thermal cell split-type structural cell preparation method, preparation process is operated in the drying room of relative humidity below 4%, it is characterized in that comprising following preparation process:
(1) negative electrode layer preparation:
Wire netting and flow collection sheet are welded together to form compound flow collection sheet; According to the thermal cell size, metal alloy film is die-cut into disk as negative material with the punch die of respective diameters; Compound flow collection sheet is placed in the compressing tablet mould, puts into negative material again, use press compression moulding, the demoulding is negative electrode layer after taking out;
(2) multi-electrode layer preparation
According to the proportioning of mass ratio 0.05-1:0.01-1:0.05-1.5 respectively weighing positive electrode, electrolyte, add the medicine of a warm nature; According to thermal cell size needs, the die sleeve of electrolyte being put into corresponding size with the hydraulic press compacting after, put into the positive electrode compacting, will add the medicine of a warm nature and put into compacting again on the positive powder, the demoulding is the multi-electrode layer after taking out;
(3) heating agent layer preparation
According to thermal cell size needs, will add the medicine of a warm nature and put into mould, after the hydraulic press compacting, the demoulding is the heating agent layer after taking out;
(4) negative electrode layer, multi-electrode layer, the heating agent layer for preparing stacked up in order, promptly constitute thermal cell split-type structural cell.
2. according to the described thermal cell split-type structural of claim 1 cell preparation method, it is characterized in that: wire netting is the nickel wire net in the described step (1); Described flow collection sheet is a stainless steel material; The nickel wire site is welded in flow collection sheet central authorities, greater than 6 solder joints.
3. according to the described thermal cell split-type structural of claim 1 cell preparation method, it is characterized in that: negative material is the LiB alloy of surperficial deoxidation layer in the described step (1).
4. according to the described thermal cell split-type structural of claim 1 cell preparation method, it is characterized in that: positive electrode is a cobalt disulfide in the described step (2).
5. according to the described thermal cell split-type structural of claim 1 cell preparation method, it is characterized in that: electrolyte is full lithium in the described step (2).
6. according to the described thermal cell split-type structural of claim 1 cell preparation method, it is characterized in that: the described medicine of a warm nature that adds is an iron powder.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867970A (en) * | 2012-09-26 | 2013-01-09 | 沈阳理工大学 | Preparation and test method for unit cell of thermal battery |
| CN104681781A (en) * | 2015-02-03 | 2015-06-03 | 中国工程物理研究院电子工程研究所 | Slurry coating process-based method for preparing thin thermal battery positive electrode and electrolyte combination electrode piece |
| CN107293763A (en) * | 2017-06-16 | 2017-10-24 | 沈阳崇华电子科技有限公司 | One kind carries the poroid filming switch-board thermoelectric pool preparation method in center |
| CN108258259A (en) * | 2018-01-11 | 2018-07-06 | 北方特种能源集团有限公司西安庆华公司 | A kind of switch-board thermoelectric pond drawing method |
| CN109742417A (en) * | 2018-11-15 | 2019-05-10 | 上海空间电源研究所 | The preparation method of single cell of thermo |
| CN109817882A (en) * | 2018-12-27 | 2019-05-28 | 中国电子科技集团公司第十八研究所 | Thermal battery lithium boron alloy negative electrode assembly and preparation method thereof |
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| JPS62139269A (en) * | 1985-12-11 | 1987-06-22 | Matsushita Electric Ind Co Ltd | Thermal battery |
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| US20070292748A1 (en) * | 2001-05-06 | 2007-12-20 | Rafael-Armament Development Authority Ltd. | Thermal batteries using cathode-precursor pyrotechnic pellets |
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| JPS62139269A (en) * | 1985-12-11 | 1987-06-22 | Matsushita Electric Ind Co Ltd | Thermal battery |
| CN1348227A (en) * | 2000-06-05 | 2002-05-08 | 伊格尔－皮彻技术有限责任公司 | Thermal battery with improved performance |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867970A (en) * | 2012-09-26 | 2013-01-09 | 沈阳理工大学 | Preparation and test method for unit cell of thermal battery |
| CN104681781A (en) * | 2015-02-03 | 2015-06-03 | 中国工程物理研究院电子工程研究所 | Slurry coating process-based method for preparing thin thermal battery positive electrode and electrolyte combination electrode piece |
| CN107293763A (en) * | 2017-06-16 | 2017-10-24 | 沈阳崇华电子科技有限公司 | One kind carries the poroid filming switch-board thermoelectric pool preparation method in center |
| CN107293763B (en) * | 2017-06-16 | 2019-03-26 | 沈阳崇华电子科技有限公司 | One kind having the poroid filming switch-board thermoelectric pool preparation method in center |
| CN108258259A (en) * | 2018-01-11 | 2018-07-06 | 北方特种能源集团有限公司西安庆华公司 | A kind of switch-board thermoelectric pond drawing method |
| CN109742417A (en) * | 2018-11-15 | 2019-05-10 | 上海空间电源研究所 | The preparation method of single cell of thermo |
| CN109742417B (en) * | 2018-11-15 | 2021-08-10 | 上海空间电源研究所 | Preparation method of thermal battery monomer |
| CN109817882A (en) * | 2018-12-27 | 2019-05-28 | 中国电子科技集团公司第十八研究所 | Thermal battery lithium boron alloy negative electrode assembly and preparation method thereof |
| CN109817882B (en) * | 2018-12-27 | 2022-03-04 | 中国电子科技集团公司第十八研究所 | Thermal battery lithium boron alloy negative electrode assembly and preparation method thereof |
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Application publication date: 20111130 |