CN212147902U - Impression device for preparing crystalline silicon solar cell electrode - Google Patents
Impression device for preparing crystalline silicon solar cell electrode Download PDFInfo
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- CN212147902U CN212147902U CN201922441696.2U CN201922441696U CN212147902U CN 212147902 U CN212147902 U CN 212147902U CN 201922441696 U CN201922441696 U CN 201922441696U CN 212147902 U CN212147902 U CN 212147902U
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Abstract
The utility model discloses a preparation crystalline silicon solar cell electrode's impression device, which comprises a housin, piston and actuating mechanism, the casing bottom surface is dull and stereotyped and this flat board is the fretwork board that has the grid line electrode figure of fretwork, and the piston periphery contacts with shells inner wall and makes and form an enclosure space that is used for holding thick liquids between piston and the fretwork board, and reciprocating motion about the piston can be done by the actuating mechanism drive, and the piston is at the extrusion thick liquids of downstream in-process, makes thick liquids pass through the fretwork part skip-print of fretwork board on the silicon chip, forms the electrode corresponding with fretwork part shape. The utility model discloses the electrode grid line lines of preparation are even unanimous, can not have the fluctuation condition of peak valley, and electrode aspect ratio is higher, and thick liquids leak the seal through the extrusion in confined lower part space, and the solvent in the thick liquids is difficult for volatilizing, and different component proportions can remain unanimous for a long time, the utility model discloses the electrode grid line length time continuity of preparation is good, improves the electrode quality, improves the battery performance, reduces manufacturing cost.
Description
Technical Field
The utility model belongs to the preparation technique of brilliant silicon solar cell electrode, in particular to impression device of preparation brilliant silicon solar cell electrode.
Background
The photovoltaic energy is one of clean energy, and has been greatly developed all over the world at present, wherein the crystalline silicon solar cell has played a very important role in the development process of the photovoltaic energy as the main force of the photovoltaic energy, and meanwhile, the crystalline silicon solar cell has been greatly developed, various new technologies are continuously emerged and applied, the efficiency of photovoltaic power generation is continuously promoted to be improved, and the cost of photovoltaic power generation is gradually reduced, and the price of photovoltaic power generation has been gradually close to the price of flat-price on-grid power generation at present.
In any battery structure, the metal electrode is the essential part for conducting current, and there are various ways of forming the metal electrode, such as thermal evaporation metal method, plating method, ink jet printing method, and screen printing method. The method for preparing the electrode by adopting the screen printing method is distinguished from a plurality of technical methods by the advantage of lowest cost, becomes the first choice for industrially producing the photovoltaic cell at present, and is the most mature and widely used method for metallizing the electrode at present.
However, the metal electrode prepared by the screen printing method has the following disadvantages:
the mesh knot or steel wire line at the opening of the screen printing plate can form height fluctuation on an electrode grid line, and the trough of the electrode grid line has higher grid line resistance.
Secondly because the half tone is in the printing in-process from the lower sword position to the receipts sword position, from the edge to the intermediate position of scraper, the power that whole half tone received is not even, and consequently the line shape outward appearance that forms is also inhomogeneous, and is also different to the influence of shading and resistance, and the inhomogeneous of electrode grid line can cause the loss of light and electricity.
Thirdly, the slurry is repeatedly printed on the screen printing plate for many times, the proportion of the small molecular resin component which is easy to pass through the screen in the slurry is gradually reduced, the proportion of the long chain molecular resin component which is not easy to pass through the screen is continuously increased, meanwhile, the solvent is continuously volatilized, the screening performance of the slurry is increasingly poor, the broken grid virtual printing condition is gradually increased, and the performance of the battery is reduced.
The performances such as the tension of the screen printing plate can be rapidly attenuated along with the increase of the use times, so that the prepared grid line electrode is increasingly poor, and the battery performance is also reduced along with the increase of the use times of the screen printing plate.
Although there is an attempt to solve the problem of the influence of the mesh knot on the grid line electrode by replacing the screen printing with the steel plate printing, the steel plate has a lower elasticity than the screen printing plate, and the inherent defects of the screen printing plate cannot be overcome by the steel plate printing, so the steel plate printing is still in the concept stage and is not put into practical use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, low in manufacturing cost, can reduce battery manufacturing cost, improve battery electrode quality, and then improve the impression device of preparation crystalline silicon solar cell electrode of battery performance.
The purpose of the utility model is realized through the following technical scheme: the imprinting device is characterized by comprising a shell, a piston and a driving mechanism, wherein the piston is arranged in the shell in an embedded mode, the driving mechanism is connected with the piston, the bottom surface of the shell is a flat plate, the flat plate is a hollow plate with a hollow grid electrode pattern, the periphery of the piston is in contact with the inner wall of the shell, so that a closed space for containing slurry is formed between the piston and the hollow plate, the piston is driven by the driving mechanism to reciprocate up and down, the piston extrudes the slurry in the downward movement process, and the slurry is printed on a silicon chip through the hollow part of the hollow plate in a leaking mode, so that an electrode corresponding to the shape of the hollow part is formed.
The utility model discloses the electrode grid line lines of preparation are even unanimous, can not have the fluctuation condition of peak valley, and the aspect ratio of electrode is higher, and thick liquids leak the seal through the extrusion in confined lower part space moreover, and the solvent in the thick liquids is difficult for volatilizing, and different component proportions can remain unanimous for a long time, consequently uses the utility model discloses the electrode grid line length time continuity of preparation is good, both can improve the electrode quality, and then improves the battery performance, can reduce the manufacturing cost of battery again, moreover, the utility model discloses simple structure, low in manufacturing cost, the practicality is strong, is suitable for extensive popularization and use, can promote the further development of photovoltaic trade.
As a preferred embodiment of the present invention, the housing is groove-shaped, the driving mechanism is located above the housing, the imprinting device further includes a connecting rod of vertical arrangement, the upper end of the connecting rod is connected to the power output end of the driving mechanism, and the lower end of the connecting rod is connected to the upper surface of the piston.
The casing mainly comprises curb plate and fretwork board, fretwork board demountable installation be in on the bottom of curb plate. When the electrodes with different patterns are manufactured, the electrodes can be manufactured by replacing the hollow-out plates with different hollow-out patterns.
Fretwork part on the fretwork board mainly comprises the fretwork slot hole that the several parallel was arranged, the fretwork slot hole is a complete through-hole, perhaps the fretwork slot hole divide into a plurality of hole sections, and the shape of every hole section is triangle-shaped, circular, rectangle or oval etc. have the figure of sealing the outline line.
The casing adopts metal material, alloy material, glass material, organic resin material, ceramic material or carbon fiber material to make. The hollow-out board that uses these materials to make can not take place deformation in the use, can use repeatedly many times, long service life, with low costs, therefore, uses the utility model discloses the grid line electrode of preparation also can not have the problem of obvious variation along with the increase of use number of times.
The driving mechanism is a cylinder, an oil hydraulic cylinder, a lead screw slide rail electrode or a linear electrode.
The electrode of the utility model is a front grid line electrode or a back grid line electrode.
Compared with the prior art, the utility model discloses the effect that is showing as follows has:
the utility model discloses the electrode grid line lines of preparation is even unanimous, can not have the fluctuation condition of peak valley, and the aspect ratio of electrode is higher, and thick liquids leak the seal through the extrusion in confined lower part space moreover, and the solvent in the thick liquids is difficult volatile, and different component proportions can remain unanimous for a long time, consequently uses the utility model discloses the electrode grid line length time continuity of preparation is good, both can improve the electrode quality, and then improves the battery performance, can reduce the manufacturing cost of battery again.
Do a matter the utility model discloses a deformation can not take place for the fretwork board in the use, can relapse repetitious usage, long service life, with low costs, therefore, use the utility model discloses the grid line electrode of preparation also can not have the problem of obvious variation along with the increase of use number of times.
The utility model discloses simple structure, low in manufacturing cost easily realizes, is suitable for extensive volume production, can promote the further development of photovoltaic trade.
Drawings
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Detailed Description
Example 1
As shown in fig. 1, the utility model relates to an impression device for preparing crystalline silicon solar cell electrode, it includes the casing 1 of recess shape, places piston 2, connecting rod 3 and actuating mechanism in the casing 1 in, and the casing can adopt metal material, alloy material, glass material, organic resin material, ceramic material or carbon fiber material to make. In the present embodiment, the driving mechanism is the air cylinder 4, and in other embodiments, the driving mechanism may be an oil pressure cylinder, a lead screw slide rail electrode or a linear electrode. The bottom surface of the shell 1 is a flat plate, the flat plate is a hollow plate 5 with a hollow grid electrode pattern, a hollow part 7 on the hollow plate 5 mainly comprises a plurality of hollow long holes which are arranged in parallel, and the hollow long holes are complete through holes. The periphery of piston 2 contacts with the inner wall of casing 1 and makes and form a confined space that is used for holding thick liquids 6 between piston 2 and the fretwork board 5, and cylinder 4 is located the top of casing 1, and the upper end of connecting rod 3 links to each other with the power take off of cylinder 4, and the lower extreme of connecting rod 3 is connected on the upper surface of piston 2. The piston 2 is driven by the cylinder 4 to reciprocate up and down, the piston 2 extrudes the slurry 6 in the downward movement process, so that the slurry 6 is printed on a silicon wafer 8 (the silicon wafer 8 is placed on the bearing table top 9) through the hollow part 7 of the hollow plate 5, and a front grid line electrode 10 corresponding to the hollow part 7 in shape is formed on the silicon wafer 8.
The hollowed-out plate 5 is a hollowed-out plate manufactured according to the electrode pattern, parts of the electrodes to be manufactured are hollowed out, during imprinting, the slurry is printed on the base material through the hollowed-out parts, and the parts of the plates, which do not need to be provided with the electrodes, are not hollowed out and are used for bearing the slurry. The shell 1 mainly comprises a side plate and a hollow plate 5, and the hollow plate 5 is detachably mounted on the bottom edge of the side plate. When the electrodes with different patterns are manufactured, the electrodes can be manufactured by replacing the hollow-out plates with different hollow-out patterns. The detachable connecting structure can adopt the prior movable connecting structure such as a clamping structure and the like.
The working process of the embodiment is as follows: when the electrode is prepared, the connecting rod 3 is pushed to reciprocate up and down by the cylinder 4, the connecting rod 3 pushes the piston 2 to move up and down, the piston 2 extrudes the slurry 6 when moving down, the slurry 6 is printed on the surface of the silicon wafer 8 through the hollow part 7 of the hollow plate 5 under the action of the extrusion force, the front grid line electrode 10 with good continuity and uniformity is formed, when the cylinder 4 moves up, the extrusion force of the piston 2 to the slurry 6 disappears, and the slurry 6 stops being printed.
Example 2
This embodiment is different from embodiment 1 in that: the hollowed-out parts on the hollowed-out plate are different, and the electrode prepared in the embodiment is a back grid line electrode. In this embodiment, the hollow portion on the hollow plate mainly comprises a plurality of parallel hollow long holes, the hollow long holes are divided into a plurality of hole segments, the shape of each hole segment is triangular, and in other embodiments, the shape of each hole segment can also be circular, rectangular or elliptical.
The working process of the embodiment is as follows: during the use, the cylinder promotes connecting rod reciprocating motion from top to bottom, and the connecting rod promotes the piston up-and-down motion, and the thick liquids are extruded when the piston moves down, and thick liquids leak the printing on the surface of silicon chip through the fretwork part (specifically each hole section) of fretwork board under the effect of extrusion force, form back grid line electrode. When the air cylinder moves upwards, the extrusion force of the piston on the slurry disappears, and the slurry stops missing printing.
The embodiments of the present invention are not limited to the above, according to the above-mentioned contents of the present invention, according to the common technical knowledge and the conventional means in the field, without departing from the basic technical idea of the present invention, the present invention can also make other modifications, replacements or changes in various forms, all falling within the scope of the present invention.
Claims (7)
1. An impression device for preparing crystalline silicon solar cell electrodes is characterized in that: the bottom surface of the shell is a flat plate, the flat plate is a hollow plate with a hollow grid line electrode pattern, the periphery of the piston is in contact with the inner wall of the shell, so that a closed space for containing slurry is formed between the piston and the hollow plate, the piston is driven by the driving mechanism to reciprocate up and down, the piston extrudes the slurry in the downward movement process, and the slurry is printed on a silicon wafer through the hollow part of the hollow plate, so that an electrode corresponding to the shape of the hollow part is formed.
2. The embossing apparatus as set forth in claim 1, wherein: the stamping device comprises a shell, a driving mechanism and a stamping device, wherein the shell is groove-shaped, the driving mechanism is located above the shell, the stamping device further comprises a connecting rod which is vertically arranged, the upper end of the connecting rod is connected with the power output end of the driving mechanism, and the lower end of the connecting rod is connected onto the upper surface of the piston.
3. The embossing apparatus as set forth in claim 2, wherein: the shell mainly comprises a side plate and a hollow plate, wherein the hollow plate is detachably mounted on the bottom edge of the side plate.
4. The embossing apparatus as set forth in claim 3, wherein: the hollow part on the hollow plate mainly comprises a plurality of parallel hollow long holes, each hollow long hole is a complete through hole, or each hollow long hole is divided into a plurality of hole sections, and the shape of each hole section is triangular, circular, rectangular or elliptical.
5. The embossing apparatus as set forth in claim 4, wherein: the shell is made of metal materials, alloy materials, glass materials, organic resin materials, ceramic materials or carbon fiber materials.
6. The embossing apparatus as set forth in claim 5, wherein: the driving mechanism is a cylinder, an oil hydraulic cylinder, a lead screw slide rail electrode or a linear electrode.
7. The embossing apparatus of claim 6, wherein: the electrode is a front grid line electrode or a back grid line electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922441696.2U CN212147902U (en) | 2019-12-27 | 2019-12-27 | Impression device for preparing crystalline silicon solar cell electrode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922441696.2U CN212147902U (en) | 2019-12-27 | 2019-12-27 | Impression device for preparing crystalline silicon solar cell electrode |
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| CN212147902U true CN212147902U (en) | 2020-12-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111098586A (en) * | 2019-12-27 | 2020-05-05 | 天津爱旭太阳能科技有限公司 | Impression device for preparing crystalline silicon solar cell electrode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111098586A (en) * | 2019-12-27 | 2020-05-05 | 天津爱旭太阳能科技有限公司 | Impression device for preparing crystalline silicon solar cell electrode |
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