TW588466B - A way for sealing solar cell - Google Patents

Abstract

This invention relates to a way for sealing solar cell. Top and bottom of solar cell are covered EVA and used P.T.F.E. as surface layer and inner layer. Vacuum compressor molds the shape with 125 Celsius lasting three to five minutes, and then shape is put into stove to be heated with 150 Celsius lasting twenty-five minutes forming the penta-piece sealing structure. Aforementioned way for sealing solar cell can be bent and shaped as different appearances showing strength and high transparency.

Description

588466 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a method for encapsulating a solar cell, in particular to a high light transmission made of a layer of vinyl acid fiber covering the top and bottom of the pool at the same time. Rate the coating layer, and then place ^ face and bottom of this coating layer, after the celluloid and Teflon are attached to others, put in a vacuum machine and an oven for pressure bonding and heating baking seal; the solar cell of a large area can be bent, and having excellent physical properties = light yellowing of the surface, a solar cell encapsulation methods and details door created first life "as used by the scope of the prior art with the use of []. encapsulating solar cells The main purpose is that the battery and the connected welding wire are not affected by air; water 1 and the connected welding wire will prevent the damage of dust, etc., which will reduce injuries, erosion of other compounds and service life. Therefore, # 褒 为 = 阳 = Workers can use this to extend the key factor of the module. The main key to the success of the production of battery modules produced by solar cells: the surface forces the free electronic core = light strikes the light transmittance of the battery as the covering material, with * Generate electricity ^, so the first package Considering the passage of the strip, so the choice of the coating material, the photometric material, can make the light easy. The method of selecting the test substrate of the module substrate is very important. It is also difficult, especially the strength and weight of the sun outside. achieved, the solar cell module after the encapsulating phase 5 = f occasions and with application demands of piece goods to be used in a solar car, two important; as to complete the production of the module package more convenient manner and can withstand a certain amount of light. Below the degree of curvature is the current traditional methods of package packaging and its $ 5 page

Comparison of advantages and disadvantages: 一般 General silicon rubber package: The solar battery module is fixed on the melamine board after welding is completed, and then it is solidified into ordinary silicon rubber in the general market. carry out. He Shao is easy to obtain 'and the price is low. ② Simple construction steps. Inferior materials: special equipment is required. ③ The shock absorption effect is good. ^ Poor weather resistance, easy to produce deterioration, and long-term exposure will only affect light transmittance and affect solar cell conversion efficiency. Poor surface strength is difficult to clean 'and easily cause surface damage. ③ 2 · Bubbles generated by special silicon 'need to be overcome. ④ Low reuse rate. ίϋFirstly coat with a special RTV coating with a film thickness of about Hm, and coat with a layer of cloth, so that the cloth is densely combined with the silicone, and then fix the solar cell module on the soil layer, and then use the special silicone and M '[3M] thin film encapsulation, the silicone is injected with the intermediate film solar cell, maintaining a thickness of silicone L 6mm, and shall not be hurt and the pool to remove bubbles, the film is a clear, colorless, solidified on standing and after the completion of drying. Advantages: ① shock resistance, can be fully protective silicone bilayer of the cell package. ② No special mechanical equipment is required to complete the seal ^. ⑨ for the failure of a limited exclusion. ^ Drawback: ①3M brand My lar film difficult to obtain, the need to rely on imports. ② completely manual operation, the operator must have skilled clever. ③ The film is not easy to be completely adhered to the silicone, and it is easy to produce

iTi ^ --— ^ 588466 Description of the invention (3) Divorce. ④ After the completion of surface cleaning and maintenance is not easy, and less silicon knee strength 'vulnerable. ⑤ The effect of repeated use is not good. Epoxy resin: The solar cell module after the welding is completed, is fixed on the substrate, after four block the establishment of blending an epoxy resin main agent and curing agent, is injected on a substrate, by ultraviolet, infrared or vacuum to remove air bubbles and that the manner i hardening, i.e. complete the package. Eight ① weather resistance. ② The raw materials are easy to obtain and the price is moderate. ③ the surface easy to clean, and good strength after curing the epoxy. After molding can still be processed. [① require special manufacturing equipment such as vacuum equipment, purple, red] :: device. Earthquake billion poor. Details shall advance ③: - welding output conditions and circumstances, to ensure good, removable package. ④ bubbles to be completely eliminated. ⑤ It is noted: 4 vacuum packaging films lack the advantages: after completion of the solar cell module solid welding sleeve, the template set into the block opening: disengagement with the film sleeve wins air, complete the package after sealing. Han vacuum equipment, the advantages of 1 wt Shore 'except film sleeve; high need to reuse the battery. It leaves too ⑷ & production disadvantages ① required vacuum sealing device and for 0 ^ ^ article available. ③ The air pressure Hua 0 No Specification flat film sleeve. ④ subject terminal wiring holes Lu, 'wins,: Yun sealing process. ⑤ maintain more

588,466 V. description of the invention (4) is not easy. 5. Glass interlayer package: [as shown in the fourth figure] After the solar cell (2) is welded, use vinyl acetate fiber (2 1) [EVA 'Ethylene Vinyl Acetate] to evenly coat the solar cell (2) before use. Low iron-toughened glass (2 2) is covered on the surface, and the package is completed by filling it around. And the cushion (2 3) can be embedded in the bracket (2 4) as an implementation structure. 〇 Advantages: ① Convenient cleaning and easy maintenance. ② [Online material obtained easily use more of the solar cell module package]. ③ anti excellent weather resistance _ square disadvantages: ① seismic difference, is often used in the fixture. 0 heavier. ③ The safety of storage and movement is at stake. ④ re-used solar cell inferior. 6. Other: using a condensing lens was also laid on the solar cell, in order to concentrate the light of improving the conversion efficiency of the group, which the light collecting lens may effect the light density is increased about 50-fold, with a typical Fresnel lens [Fresnel] and point focal length lenses, but these lenses are usually made of very expensive plastic materials, which can collect light and then project it onto solar cells. The use of high conversion efficiency of the battery plus the effect of such a condensing lens, a combination thereof so that the conversion efficiency of up to 30% 'is restricted to not collect the scattered light and is preferably placed in the region [cloudless sky The clouds are like the sky over the desert]. Bottom

V. Description of the Invention (5) a metal substrate materials may be used A button Γ + Si plate, and uses an end view of the module ^. Two stainless steel plates] or plastic bottom solar cell modules, above = uniform; with -2 newly developed, solar cells are divided into three layers, and the glass-iron initial glass packaging rate is still the goal of Japan's Sanyo Corporation. Improve the conversion efficiency and change the effect on temperature. ^ 1 can be maintained when compared to a closure of the above conventional solar cell Sang stupid name basis weight which is common drawback Method 7 made of, rate] quite limited, it does not apply for the heart may be; :: f can be curved or [ The composition and application of Qu Zhiqu's flat type, and the long arc shape, can only be the transmittance of light, causing the sun to become yellowish and darker, and the impact also affects its use and scope. Therefore, the rate cannot be exerted, which is inferior to the method. ^ Is ideal package structure and the package side SUMMARY OF THE INVENTION The present invention relates to a method of encapsulating a solar cell with a cladding layer of the upper and lower EVA Phi pools, based on the sun rays good penetration rate to increase the power supply to s, of the solar cell Celluloid with a fairly good transparency as a protective layer. In addition to attaching a layer to the surface, the transparent yellow of EVA on the celluloid coating can be used to darken and affect the light transmission. The rate, and Γ σ can not change the bottom layer formed by the dragon material in long-term use. It also doubles as a 1 ¼ battery with iron fluoride under the cap 2 coating layer, and will be placed in 5 layers to form five layers. Type sandwich structure holds 125. (: 3 to 5 minutes and the press temperature was added :: '... holding under vacuum, at first glance binding preliminary shape, and then the five 588466 described invention (6) taken into the oven to serve additional name a strange Warm baking and warming to make a full 的 m of Guangying \ and last 25 minutes of moisture in the layer, and increase the temperature of each layer, and thereby completely eliminate the possibility of moderate flexibility and softness of each joint with each bonding layer. The range of bending curvature makes the solar panel of the solar cell has a considerable equipment (such as a solar car); the application can be curved or curved with yellow shape and darken to ensure long-term use. Celluloid's protective sandwich structure has an impact and light effect. And it can effectively increase the scope of application and practicality through this five. ^. The positive purpose of stubborn and light weight can be [implementation method] First, please See also the first step below: As shown in the figure below, the implementation steps of the present invention are as follows: 1. Slope cover up and down slope. At monocrystalline or polycrystalline evening, there are upper and lower coatings (li) electrical / above (1), the following drape (11), (12) j acetic knee 12); the upper, lower cladding layer

Vinyl Acetate] material B and thin ^ acid fiber [EVA, Ethylene when the flexibility and softness [such as the second picture 'has the property of @transparency, suitable for the slope cover surface and bottom layer]. The top and bottom coatings (11) are attached to the other surface (1 3) *: (丄 2) J top and bottom are celluloid bis with good transparency respectively = 4), and the surface (1 3) And as the upslope cladding (1 质), it is made of θ protective layer with appropriate flexibility and soft air [Tedlar] material, and the bottom layer (1 4) is made of iron, has flexibility and softness and is used as Downhill cover

588,466 V. invention is described in (7) layer (12) of the third protective layer as shown in [] FIG. 3 · Vacuum thermocompression bonding: Put the solar cell composed of five layers into the vacuum hot press, and then maintain the temperature of 1 2 5 C after the vacuum is drawn. Then use the temperature of 3 to 5 minutes for the thermocompression bonding. so that each layer can be combined as desired binding and preliminary stereotypes. 4 · Baking and sizing: Take out the preliminary shaped solar cell from the vacuum heat press and put it in the oven. 'The oven maintains a south temperature of 150 ° C and uses this south temperature as the hate temperature for 25 minutes to make it and tighter integration to achieve reliable and stereotypes. 5. Remove the finished product: the final shape of the fully integrated solar cell is finished remove from oven. The method whereby the encapsulated solar cell has the following characteristics and advantages, characteristics such as high transparency 1. The use of vinyl acetate [EVA] for a solar cell of the upper and lower cladding layers, the fibers can be used vinyl acetate, so that the solar cell can be The efficiency of absorbing light is increased, and the current generated can be relatively increased and more practical. 2. In celluloid as the uppermost protective layer, the vinyl acetate may be utilized with celluloid fiber bonding, without yellowing or darkening to ensure high transparency to vinyl acetate long fibers remain in good condition, Can effectively increase and extend the life of the solar cell. 3. Sandwich five package structure formed therewith, so that the solar cell module having considerable flexibility and properties of the flexible, can adapt to use objects [

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Page 12 V. Description of the invention (8) If the use of the solar car is increased, the application range should be increased. 4. Five-piece sandwich. In addition to ensuring its good quantified characteristics, the battery can be used in practical applications. It was revealed that the tool had not been disclosed before the application, and the invention patent was submitted according to law. And the curve of the car shell] as a surface combination, you can use the object. In addition to the effect of the material characteristics of the bonding layers, the light transmittance and the effect of generating electric current, the package structure is lighter and maintains a good structural composition strength, which is quite helpful for the sun. ^ = Example can really achieve the intended use or effectiveness of body building, not only have not seen in similar products, are sincere already yuan in full compliance with provisions of the Patent Law and the requirements to apply for benefits, the solicit the favor of the review, and given the quasi-patent 588 466 Fig. Brief Description of the formula [Brief Description of the drawings] FIG ·· a first flow of the second FIG schematic creation: the creation of a schematic diagram of the present embodiment (a) of FIG third: creation of a schematic diagram of the present embodiment (b) of FIG IV: with a cross-sectional view of the conventional Schematic [Refer to the drawing number] (1) Solar cell (11) Uphill coating (12) Lower coating (13) Surface layer (14) Bottom layer

Claims (1)

588466 VI. Application for a patent A method for packaging a solar cell, the steps are as follows: ① coating the upper and lower layers: on top and bottom of the solar cell module of monocrystalline or polycrystalline silicon; The upper and lower slope coatings are made of vinyl acetate fiber (EVA, Ethylene Vinyl Acetate), and have high transparency properties, with appropriate flexibility and softness; ② Covering the top and bottom layers: The top and bottom of the cladding are then attached with a cover surface and a bottom layer; the surface layer is made of celluloid material with good transparency, has appropriate flexibility and softness, and serves as a protective layer for the upslope coating; the bottom layer is iron Fluoron (Ted lar) material, with flexibility and softness, as a protective layer of the next layer; ③ Vacuum heat pressing: Put the solar cell consisting of five sandwiches into a vacuum heat press, draw After the vacuum, maintain a high temperature of 1 2 5 ° C, and then perform hot-pressing bonding for 3 to 5 minutes based on this high temperature, so that the bonding layers can be combined as required and preliminary shaped; ④ Baking and shaping: the preliminary shaped solar cell since vacuum hot pressing Take out the machine and put it in the oven. The oven maintains a high temperature of 150 ° C and a constant temperature force of 25 minutes at this high temperature to achieve a firm and tight combination and shape; ⑤ Take out the finished product: Finally, Completely combined with the shaped solar cell, the finished product is taken out of the oven. Page 14