CN102044572A - Solar cell back panel, preparation method thereof and solar module - Google Patents
Solar cell back panel, preparation method thereof and solar module Download PDFInfo
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- CN102044572A CN102044572A CN2009101105940A CN200910110594A CN102044572A CN 102044572 A CN102044572 A CN 102044572A CN 2009101105940 A CN2009101105940 A CN 2009101105940A CN 200910110594 A CN200910110594 A CN 200910110594A CN 102044572 A CN102044572 A CN 102044572A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a solar cell back panel which comprises an insulating layer, an obstructing layer and a weathering layer from top to bottom, wherein the obstructing layer is a metal layer; and the weathering layer is a polyphenyl thioether layer. The invention also provides a solar module which comprises a battery, a euphotic zone and a back panel, wherein the euphotic zone, the battery and the back panel are sequentially overlapped from top to bottom. The solar module is characterized in that the back panel is the solar cell back panel provided by the invention. The solar cell back panel of the invention has the advantages of low cost, environmental protection, weathering performance and higher adhesion among all layers.
Description
Technical field
The solar module that the present invention relates to a kind of solar cell backboard and preparation method thereof and use this backboard.
Background technology
Solar module directly is exposed in the atmosphere in use, stand the erosion of variations in temperature, ultraviolet irradiation and steam.As not resisting Effect of Environmental, its opto-electronic conversion performance is easy to decay, lose practical value, thereby the research of solar cell package material is very important.
For improving weatherability, intercepting ultraviolet ray and steam, generally adopt two polyvinyl acetate (EVA) film that solar cell is sealed at present, and be integral with upper strata glass, lower floor's back veneer material heat pressure adhesive together, constitute solar panel.Solar cell backboard often adopts Tedlar-PET-Tedlar (TPT) encapsulating structure in the prior art; Tedlar is mainly polyvinyl fluoride, anti-20 annual agings; But the Tedlar cost is higher and have an environmental pollution.
A kind of solar cell backboard is disclosed among the CN101359695A, comprise base material and weathering layer, at least one side is provided with weathering layer in the both sides of base material, side at base material is provided with Obstruct membrane, the component of described weathering layer and parts by weight thereof are: fluorine resin 25-45 part, modified resin 1.5-3 part, polymer filler 0.5-3 part, inorganic filler 0.1-1 part, solvent 50-70 part.This solar cell backboard adopts fluorine resin weathering layer, and weatherability is relatively poor, and the weathering layer cost is higher and environment polluted.And because the general surface energy of fluorine resin is low, make that the bonding strength of weathering layer and Obstruct membrane of fluorine resin is not enough, simultaneously layer and layer between cause bubble residual easily, make that the adhesive force between each layer of solar cell backboard is lower.
Summary of the invention
The invention solves that the solar cell backboard weatherability that exists in the prior art is poor, adhesive force is lower between each layer, cost is high and the technical problem of not environmental protection.
The invention provides a kind of solar cell backboard, comprise insulating barrier 1, barrier layer 2 and weathering layer 3 from bottom to up successively, described barrier layer is a metal level, and described weathering layer is the polyphenylene sulfide layer.
The present invention also provides a kind of preparation method of solar cell backboard, and the two sides that is included in barrier layer forms insulating barrier and weathering layer respectively; Described barrier layer is a metal level, and weathering layer is the polyphenylene sulfide layer.
The present invention also provides a kind of solar module, this solar module comprises battery, photic zone, backboard, described photic zone, battery and backboard stack gradually from top to bottom and arrange, it is characterized in that described backboard is any described solar cell backboard among the claim 1-7.
Solar cell backboard of the present invention adopts the polyphenylene sulfide weathering layer, can effectively reduce the backboard cost, and can not pollute very environmental protection to environment; The polyphenylene sulfide weatherability is strong in addition, thereby improves the weatherability of solar cell backboard of the present invention; Barrier layer is a metal level, with polyphenylene sulfide and insulating barrier adhesive force height.
Description of drawings
Fig. 1 is the structural representation of the solar cell backboard that provides of the embodiment of the invention 1.
Fig. 2 is the structural representation of the solar cell backboard that provides of the embodiment of the invention 3.
Embodiment
The invention provides a kind of solar cell backboard, as shown in Figure 1, comprise insulating barrier 1, barrier layer 2 and weathering layer 3 from bottom to up successively; Described barrier layer is a metal level, and described weathering layer is the polyphenylene sulfide layer.
The present inventor finds that by a large amount of experiments the weathering layer of solar cell backboard adopts the polyphenylene sulfide layer, can effectively reduce cost, and improve the weather resistance of solar cell backboard.Adopt the weathering layer of polyphenylene sulfide as solar cell backboard of the present invention, on the one hand polyphenylene sulfide can effectively acidproof/caustic corrosion, anti-freon, anti-hydrolysis; On the other hand, the polyphenylene sulfide radiation resistance is good, and ultraviolet ray, gamma-rays and neutron ray are had very high durability.In addition, polyphenylene sulfide anti-flammability and mechanical property are good, the dimensional stability height.
Among the present invention, described insulating barrier is various resins commonly used in the prior art, for example can be polyphenylene sulfide (PPS), PETG (PET), poly-to (ethylene naphthalate) PEN, low density polyethylene (LDPE) (LDPE), Merlon (PC) or polypropylene (PP).Wherein, described .LDPE is for well known to a person skilled in the art that density is 0.916-0.930g/cm
3Polyethylene.From thermal endurance, the electrical insulating property of insulating barrier with take all factors into consideration in price, among the present invention, described insulating barrier preferably adopts PPS or PET.More preferably under the situation, for improving the adhesive force of insulating barrier and barrier layer, described insulating barrier adopts PPS.
Barrier layer described in the present invention is a metal level, can effectively intercept steam, the protection solar module.For improving the adhesive force of barrier layer and weathering layer (polyphenylene sulfide), among the present invention, described barrier layer preferably adopts aluminizer or metal aluminum foil.Obstruct membrane can be transparent also can be opaque.Can significantly reduce the steam transit dose of solar cell backboard behind the employing barrier layer, simultaneously, adopt opaque barrier layer can reduce or eliminate the transformation efficiency that sees through and then improve solar module of light.
According to solar cell backboard provided by the present invention, the thickness of described insulating barrier is the 0.02-0.05 millimeter, and the thickness of barrier layer is the 0.02-0.3 millimeter, and the thickness of weathering layer is the 0.02-0.05 millimeter.The thickness of insulating barrier of the present invention, barrier layer and weathering layer is all much smaller than various solar cell backboards of the prior art, therefore keeping solar cell backboard to have ageing-resistant preferably and intercepting the cost that effectively reduces solar cell backboard under the prerequisite of steam requirement.
As a kind of preferred implementation of the present invention, for improving barrier layer 2 and the adhesive force of insulating barrier 1 and/or the adhesive force of barrier layer 2 and weathering layer 3, solar cell backboard provided by the invention is also containing tack coat 4 between insulating barrier 1 and the barrier layer 2 and/or between weathering layer 3 and the barrier layer 2.More preferably under the situation, all contain tack coat 4 between insulating barrier 1 and the barrier layer 2 and/or between weathering layer 3 and the barrier layer 2, as shown in Figure 2.
The binding agent that described tack coat adopts can be binding agent common in the prior art, for example can be selected from polyvinyl acetate (EVA), polyvinyl butyral resin (PVB) or olefin polymer.The thickness of described tack coat is unsuitable blocked up, otherwise causes solar cell backboard thickness bigger, and the also corresponding reduction of various performance.Under the preferable case, the thickness of described tack coat is the 0.005-0.3 millimeter.
The present invention also provides a kind of preparation method of solar cell backboard, and the two sides that is included in barrier layer forms insulating barrier and weathering layer respectively; Described barrier layer is a metal level, and weathering layer is the polyphenylene sulfide layer.
The method according to this invention, the method that described two sides at barrier layer forms insulating barrier and weathering layer respectively can adopt the whole bag of tricks of the prior art, as coextrusion, hot pressing or curing.
The method of described coextrusion is for being the intermediate layer with the barrier layer, the two sides that is distributed in barrier layer forms insulating barrier and weathering layer by coextrusion, specifically may further comprise the steps: adopt two extruders to extrude weathering layer film and insulating layer of thin-film respectively, pull out the barrier layer metal platinum by unreeling machine; Then with three layers simultaneously by stack, barrier layer is placed in the middle of the stack, simultaneously weathering layer and insulating barrier calendering are compounded on the barrier layer at the upper and lower surface of barrier layer.Under the preferable case, barrier layer can be smeared a layer binder in advance and be undertaken compoundly then by stack, perhaps stack is heated, and making three layers, to carry out hot pressing compound.
Hot pressing/curing that the method for described hot pressing/curing is used always for those skilled in the art.For example, because polyphenylene sulfide and metal have adhesive property preferably, can be among the present invention directly at the one side applying polyphenylene sulfide of barrier layer, pass through hot pressing/the be solidificated in one side formation weathering layer of barrier layer then; The method that forms described insulating barrier at the another side of barrier layer also can adopt resin and metal hot pressing/curing.
A kind of preferred implementation of the present invention, the method that forms insulating barrier and weathering layer on the two sides of barrier layer respectively can adopt the powder/liquid that is coated with insulating layer coating and weathering layer material earlier on the two sides of barrier layer respectively, curing/hot pressing makes with barrier layer laminatedly then, forms insulating barrier and weathering layer respectively on the two sides of barrier layer.The mode of described coating is a various painting method of the prior art, for example electrostatic spraying, dip-coating, airblade coating, scraper coating, intaglio plate coating or slot coated method.For example, when described insulating barrier and weathering layer are polyphenylene sulfide, can be by electrostatic spraying at the two sides of barrier layer spraying PPS powder, heating and melting then, cooling curing obtains solar cell backboard of the present invention.
In order to improve the adhesive force between each layer of solar cell backboard of the present invention, can also form tack coat in the one side at least of described barrier layer; Described adhesive linkage is between insulating barrier and the barrier layer and/or between weathering layer and the barrier layer.Tack coat can be by compound stickup method and other layer is bonding or be compounded on other layers by the method for extruding curtain coating.
The method of compound stickup of the present invention is to be bonded together with the method for other layers by pressure and/or curing after adopting known coating method coating binding agents such as dip-coating, extruding are coated with, airblade coating, roller coat, intaglio plate coating, spraying on barrier layer, weathering layer and/or the insulating barrier.Described binding agent can be various binding agents common in the prior art, for example can be selected from polyvinyl acetate (EVA), polyvinyl butyral resin (PVB) or olefin polymer.
Among the present invention, described curing comprises by ultraviolet curing or X ray, brill 60, electrostatic accelerator and great-power electronic linear accelerator etc. is solidified or hot curing by high-energy ray as irradiation bomb.
As those skilled in the art's common practise, before the two sides of barrier layer forms insulating barrier and weathering layer, need barrier layer is cleaned described in the preparation method provided by the invention, remove the dust and the greasy dirt on barrier layer surface.Described cleaning can be adopted various organic solvent of the prior art, as ethanol.
The present invention also provides a kind of solar module, this solar module comprises battery, photic zone, backboard, described photic zone, battery and backboard stack gradually from top to bottom and arrange, and it is characterized in that, described backboard is a solar cell backboard provided by the invention.
Below in conjunction with embodiment solar cell backboard provided by the present invention and preparation method thereof is described.The raw material that adopts all is commercially available in following examples.
Get the thick aluminium foil of 0.25mm as barrier layer, use the two sides of the cotton wiping aluminium foil of absolute ethyl alcohol, and dry up with hair dryer.Adopt electrostatic powder spraying equipment (model: HVM2072, producer:, spray the PPS powder of 0.04mm thickness to the aluminium foil two sides Zhengzhou super favour electrostatic plastic spraying equipment company).Then it is changed over to and toast 3min in the baking oven under 290 ℃, take out natural cooling, can form PPS weathering layer and PPS insulating barrier on the aluminium foil two sides.By above-mentioned steps, prepare the solar cell backboard of present embodiment, be designated as A1.Described solar cell backboard has structure shown in Figure 1.
Get the thick aluminium foil of 0.25mm as barrier layer, use the two sides of the cotton wiping aluminium foil of absolute ethyl alcohol, and dry up with hair dryer.Adopt coextrusion equipment complex (model: SJ-LM1250, producer:, aluminium foil as the intermediate layer, is extruded the thick PPS layer of 0.05mm in one surface Changzhou three circle plastics machinery Co., Ltds), extrude the thick pet layer of 0.05mm on another surface.By composite roll that the PPS layer on two surfaces of aluminium foil and pet layer and aluminium foil hot pressing is compound then, can form PPS weathering layer and PET insulating barrier on the aluminium foil two sides.By above-mentioned steps, prepare the solar cell backboard of present embodiment, be designated as A2.
Get the thick copper facing film of 0.25mm as barrier layer, use the two sides of the cotton wiping aluminium foil of absolute ethyl alcohol, and dry up with hair dryer.Brush the binding agent EVA that thickness is 0.01mm respectively at copper facing film upper and lower surface, on a surface PPS film of 0.02mm is fitted with it then, on another surface the PC film of 0.02mm is fitted with it, hot-press solidifying forms PPS weathering layer and PC insulating barrier on copper facing film two sides.By above-mentioned steps, prepare the solar cell backboard of present embodiment, be designated as A3.Described solar cell backboard has structure shown in Figure 2.
Comparative Examples 1
Adopt embodiment 1 disclosed method among the CN101359695A, prepare the solar cell backboard of this Comparative Examples, be designated as D1.
Performance test:
1, weatherability test:
Adopt solar panel authentication/solar photovoltaic cell panel IEC61215 disclosed method, A1-A3 and D1 are tested, test condition is: the time is 2000h, and relative humidity is 85%rh, and probe temperature is 85 ℃.Observe A1-A3 and D1 and have or not layering.Nothing is layered as OK, is layered as NO.Test result is as shown in table 1.
Adopt the ASTMF-149 disclosed method, the puncture voltage of test A1-A3 and D1, test result such as table 1 test.
Place under the 1KW ultraviolet xenon lamp under 60 ℃ in A1-A3 and the D1 sample, shone 150 hours, observation has or not variable color.No variable color is OK, and it is NO that variable color is arranged.Test result such as table 1 test.
Adopt the UL-94 disclosed method, the fire-retardant rank of test A1-A3 and D1, test result such as table 1 test.
2, adhesive force test:
Adopt IPV NO.38 disclosed method, the interlaminar strength of test A1-A3 and D1, test result such as table 1 test.
3, steam transmission measurement:
Adopt ISO 15106-3 disclosed method, the steam transmitance of test A1-A3 and D1, test result such as table 1 test.
4, dimensionally stable property testing:
Adopt ASTM D-1204 disclosed method, the percent thermal shrinkage of test A1-A3 and D1 sample (150 ℃ * 30min), test result sees Table 1.
Table 1
From the test result of table 1 as can be seen, adopt the solar cell backboard A1-A3 of method preparation of the present invention not have layering, puncture voltage height, no variable color, fire-retardant rank height, therefore have the weatherability of excellence; The interlaminar strength of A1-A3 and glue peel strength all are higher than D1, illustrate that adhesive force is very high between each layer of solar cell backboard of the present invention.In addition, the barrier layer of solar cell backboard of the present invention is a metal level, and is very good to the barrier of steam, and the steam transmitance is low.
Claims (12)
1. a solar cell backboard comprises insulating barrier (1), barrier layer (2) and weathering layer (3) from bottom to up successively; Described barrier layer is a metal level, and weathering layer is the polyphenylene sulfide layer.
2. solar cell backboard according to claim 1 is characterized in that, described insulating barrier is polyphenylene sulfide layer, PETG layer, poly-to (ethylene naphthalate) layer, low density polyethylene layer, layer of polycarbonate or polypropylene layer.
3. solar cell backboard according to claim 1 is characterized in that, described barrier layer is aluminizer or metal aluminum foil.
4. solar cell backboard according to claim 1 is characterized in that, the thickness of described insulating barrier is the 0.02-0.05 millimeter, and the thickness of barrier layer is the 0.02-0.3 millimeter, and the thickness of weathering layer is the 0.02-0.05 millimeter.
5. solar cell backboard according to claim 1 is characterized in that, is also containing tack coat (4) between insulating barrier (1) and the barrier layer (2) and/or between weathering layer (3) and the barrier layer (2).
6. solar cell backboard according to claim 5 is characterized in that, described tack coat is polyvinyl acetate layer, polyvinyl butyral resin layer or olefin polymer layer.
7. solar cell backboard according to claim 5 is characterized in that, the thickness of described tack coat is the 0.005-0.3 millimeter.
8. the preparation method of the described solar cell backboard of claim 1, the two sides that is included in barrier layer forms insulating barrier and weathering layer respectively; Described barrier layer is a metal level, and weathering layer is the polyphenylene sulfide layer.
9. method according to claim 8 is characterized in that, described two sides at barrier layer forms the method for insulating barrier and weathering layer respectively for being the intermediate layer with the barrier layer, forms insulating barrier and weathering layer on the two sides of barrier layer by coextrusion respectively.
10. method according to claim 8, it is characterized in that, described two sides at barrier layer forms the method for insulating barrier and weathering layer respectively for be coated with the powder/liquid of insulating layer coating and weathering layer respectively on the barrier layer two sides, forms described insulating barrier and weathering layer by curing/hot pressing.
11. method according to claim 8 is characterized in that, the one side at least that also is included in described barrier layer forms tack coat; Described adhesive linkage is between insulating barrier and the barrier layer and/or between weathering layer and the barrier layer.
12. solar module, this solar module comprises battery, photic zone, backboard, described photic zone, battery and backboard stack gradually from top to bottom and arrange, and it is characterized in that, described backboard is any described solar cell backboard among the claim 1-7.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709365A (en) * | 2012-06-12 | 2012-10-03 | 苏州阿特斯阳光电力科技有限公司 | Solar module and preparation method thereof |
| CN103107222A (en) * | 2011-11-15 | 2013-05-15 | 杜邦太阳能有限公司 | Back panel applicable to solar energy module and preparation method thereof |
| CN103137732A (en) * | 2011-11-23 | 2013-06-05 | 比亚迪股份有限公司 | Solar cell backboard and solar cell module |
| CN103172768A (en) * | 2011-12-26 | 2013-06-26 | 上海晶棠安全玻璃技术应用研究中心 | Method for manufacturing PVB (polyvinyl butyral) resin for solar energy photovoltaic power generation |
| CN104040728A (en) * | 2011-11-18 | 2014-09-10 | 托马斯·G·胡德 | Novel solar modules, supporting layer stacks and methods of fabricating thereof |
| WO2014153997A1 (en) * | 2013-03-27 | 2014-10-02 | 深圳市比亚迪汽车研发有限公司 | Solar cell back panel and solar cell assembly |
| CN104393080A (en) * | 2014-11-12 | 2015-03-04 | 无锡中洁能源技术有限公司 | Vacuum plasma modified solar cell back panel and preparation method thereof |
| CN104409546A (en) * | 2014-11-14 | 2015-03-11 | 无锡中洁能源技术有限公司 | Solar battery backboard and preparation method thereof |
| CN104868003A (en) * | 2015-05-20 | 2015-08-26 | 杭州福斯特光伏材料股份有限公司 | Solar photovoltaic backboard with high steam blocking performance |
| CN105514201A (en) * | 2016-01-21 | 2016-04-20 | 中天光伏材料有限公司 | Conductive back plate for high wetproof and heatproof photovoltaic module and manufacturing method thereof |
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- 2009-10-21 CN CN2009101105940A patent/CN102044572A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103107222A (en) * | 2011-11-15 | 2013-05-15 | 杜邦太阳能有限公司 | Back panel applicable to solar energy module and preparation method thereof |
| CN104040728A (en) * | 2011-11-18 | 2014-09-10 | 托马斯·G·胡德 | Novel solar modules, supporting layer stacks and methods of fabricating thereof |
| CN104040728B (en) * | 2011-11-18 | 2018-07-20 | 托马斯·G·胡德 | New type solar energy module, bearing layer laminates and the method for manufacturing them |
| CN103137732B (en) * | 2011-11-23 | 2016-08-03 | 比亚迪股份有限公司 | A kind of solar cell backboard and a kind of solar module |
| CN103137732A (en) * | 2011-11-23 | 2013-06-05 | 比亚迪股份有限公司 | Solar cell backboard and solar cell module |
| CN103172768A (en) * | 2011-12-26 | 2013-06-26 | 上海晶棠安全玻璃技术应用研究中心 | Method for manufacturing PVB (polyvinyl butyral) resin for solar energy photovoltaic power generation |
| CN103172768B (en) * | 2011-12-26 | 2015-03-04 | 上海晶棠安全玻璃技术应用研究中心 | Method for manufacturing PVB (polyvinyl butyral) resin for solar energy photovoltaic power generation |
| CN102709365A (en) * | 2012-06-12 | 2012-10-03 | 苏州阿特斯阳光电力科技有限公司 | Solar module and preparation method thereof |
| WO2014153997A1 (en) * | 2013-03-27 | 2014-10-02 | 深圳市比亚迪汽车研发有限公司 | Solar cell back panel and solar cell assembly |
| CN104393080A (en) * | 2014-11-12 | 2015-03-04 | 无锡中洁能源技术有限公司 | Vacuum plasma modified solar cell back panel and preparation method thereof |
| CN104393080B (en) * | 2014-11-12 | 2016-05-04 | 无锡中洁能源技术有限公司 | Vacuum plasma modified solar battery back-sheet and preparation method thereof |
| CN104409546B (en) * | 2014-11-14 | 2016-06-22 | 无锡中洁能源技术有限公司 | A kind of solar cell backboard and preparation method thereof |
| CN104409546A (en) * | 2014-11-14 | 2015-03-11 | 无锡中洁能源技术有限公司 | Solar battery backboard and preparation method thereof |
| CN104868003A (en) * | 2015-05-20 | 2015-08-26 | 杭州福斯特光伏材料股份有限公司 | Solar photovoltaic backboard with high steam blocking performance |
| CN105514201A (en) * | 2016-01-21 | 2016-04-20 | 中天光伏材料有限公司 | Conductive back plate for high wetproof and heatproof photovoltaic module and manufacturing method thereof |
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Application publication date: 20110504 |