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| #REDIRECT ] | |||
| {{ref improve|date=December 2014}} | |||
| A '''solar battery''' is a ] that integrates a ] with battery power storage. | |||
| {{R with history}} | |||
| A second meaning of '''solar battery''' (Typ II) are rechargeable batteries which have been developed specifically for use in photovoltaic systems or are just used for. They are used especially in stand-alone systems for storage of energy produced by solar panels and batteries as a buffer when major consumer operation. <ref>, abgerufen am 14. November 2013.</ref> Often, the term is also commonly used for built-in solar power applications batteries, even if they are not specified for it. | |||
| == History == | |||
| The first solar battery was developed in 2014 by researchers at ]. The researchers used a ] using ] that stores the power that it uses ] to decompose and re-form ].<ref>{{cite journal|last1=Yu|first1=Mingzhe|last2=Ren|first2=Xiaodi|last3=Ma|first3=Lu|last4=Wu|first4=Yiying|title=Integrating a redox-coupled dye-sensitized photoelectrode into a lithium–oxygen battery for photoassisted charging|journal=Nature Communications|date=3 October 2014|volume=5|pages=5111|doi=10.1038/ncomms6111}}</ref> It used three electrodes rather than the typical four. It featured a lithium plate base, two layers of electrode separated by a thin sheet of porous carbon and a ] gauze mesh that played host to a dye-sensitive photoelectrode. Porous materials allowed the battery's ions to oxidize into lithium peroxide, which chemically decomposes into lithium ions and stored as lithium metal. The device used conventional liquid electrolyte consisting of part salt and part solvent (] mixed with ] ].<ref>{{Cite web|title = World's first "aqueous solar flow battery" outperforms traditional lithium-iodine batteries|url = http://www.gizmag.com/aqueous-solar-flow-battery-osu/38748|website = www.gizmag.com|accessdate = 2015-12-13|date = August 3, 2015|last = Lavars|first = Nick}}</ref> | |||
| In 2015 the same team announced modifications to their design such that compared with traditional lithium iodine batteries, energy savings reached 20 percent. The new design no longer needs air to pass through it in order to function. Water was the solvent and ] is the salt. The result is a water-based electrolyte and a prototype now classed as an aqueous ]. The device is topped with a solid ] in a single solid sheet. Over 25 charge/discharge cycles, the battery released around 3.3 volts. While typical batteries are charged with 3.6 volts and discharge at 3.3 volts, the solar flow battery only needed 2.9 volts to charge with the solar panel making up the difference, almost 20 percent. | |||
| Another team wired four ]<nowiki/>s in series to enhance the voltage and photo-charge lithium batteries with 7.8% efficiency. Perovskite solar cells have active materials with a crystalline structure identical to the mineral ]. Perovskite cells convert a broader spectrum of sunlight into electricity than conventional silicon-based cells.<ref>{{Cite web|title = Researchers efficiently charge a lithium-ion battery with solar cell|url = http://www.rdmag.com/news/2015/08/researchers-efficiently-charge-lithium-ion-battery-solar-cell|website = Research & Development|accessdate = 2015-12-13|date = August 28, 2015|last = Mayhood|first = Eric}}</ref> | |||
| ==used batteries (Typ II)== | |||
| The most commonly used for solar batteries battery type was in the past, the lead-acid battery. For its use of low price per storable energy quantity, the achievable maintenance, the low self-discharge and the relatively high efficiency of about 80% spoke. The losses in lead-acid batteries can be explained in part by the outgassing of hydrogen-oxygen during charging. With maintenance-free lead-acid batteries the gas emissions are reduced. Solar-lead batteries vary in their internal mechanical structure of the other lead-acid batteries, they are optimized for a particularly long service life, cycle stability and behavior at low discharge. Typical are numbers of cycles of 1200 (with a depth of discharge of about 80%) to a residual capacity of 80%, since then a battery is considered defective from. Maintenance-free lead-acid batteries have the advantage that there are no or only forms a minimum stratification she sure but allow only a much smaller number of cycles from 400 to 600. An additional circulation of acid prevents completely stratification and the lead-acid batteries. This is especially important in stationary operation. | |||
| Some truck batteries are also known. Used which are batteries that usually come as a traction battery for forklifts used. It is yet to lead-acid batteries, but with 1,500 charge cycles and favorable price-performance ratio. <ref> "Wir nutzen für die Energiespeicherung Panzerplatten- Batterien die aus Traktionsanwendungen bekannt sind. Entsprechend DIN EN60254 haben diese Batterien 1.500 Ladezyklen." (Satz ist von der Startseite), siehe auch als Hinweis, dass es sich um Gabelstaplerbatterien handelt, abgerufen am 13. März 2014.</ref> | |||
| Lithium-ion batteries are also used recently as a solar battery, which is due to sharp fall in prices of lithium-ion batteries (see battery prices). <ref> "Die REM GmbH (Rottenburg) hat einen Lithium-Ionen-Energiespeicher für Wohnhäuser und kleine Unternehmen auf den Markt gebracht (...)", abgerufen am 24. Februar 2014.</ref><ref name="frankensolar"> "(...) Frankensolar (Nürnberg) begeht mit einer innovativen Produktkombination aus Nedap PowerRouter und Sony „Fortelion“ Lithium-Ionen-Batterie neue Wege moderner und effizienter Energiespeicherung." und "Aufgrund der Fortelion-Lithium-Eisenphosphat-Technologie sei diese Batterie eine der sichersten Batterien am Markt: Ihre Unempfindlichkeit gegen Einflüsse von außen sowie verschiedene integrierte Sicherheitsmechanismen unterstützten die Lebensdauer von bis zu 20 Jahren." und "Die technischen Daten seien bislang unerreicht: Selbst nach 8.000 Be- und Entladungen, bei 100% Entladetiefe (DOD), seien noch 70 Prozent der ursprünglichen Kapazität vorhanden", abgerufen am 24. Februar 2014.</ref> In addition, lithium ion batteries have some very high cycle stability of more than 10,000 charge and discharge cycles and a long service life of up to 20 years. <ref name="Promotion Dr. Wilka"> In: ''Promotion Dr. Marcel Wilka'' 19. Dezember 2013.</ref><ref> "Die Tests setzten die Batterien extremen Belastungen aus. So wurden über einen Zeitraum von 5 Jahren bei einer Entladungstiefe von 60 % mehr als 10.000 äquivalente Vollzyklen erreicht." und „Simulationen, die sich auf unsere Laborergebnisse und die unserer Kollegen vom ZSW stützen, zeigen, dass bei Berücksichtigung beider Alterungsprozesse die Batterien im BPT-S 5 Hybrid bis zu 20 Jahre betriebsfähig sind“, abgerufen am 29. März 2014.</ref><ref> "Die Zellen haben laut Hersteller eine voraussichtliche Lebensdauer von 20 Jahren und könnten bis zu 15.000 Mal aufgeladen werden.", abgerufen am 29. März 2014.</ref> in particular, lithium iron phosphate batteries are used which, and by a high cycle stability, high security small price excel and come as traction batteries for use. <ref> "Lithium-Eisen-Phosphat Technologie, LiFePO<sub>4</sub>; 7000 Ladezyklen", abgerufen am 24. April 2014.</ref><ref name="frankensolar"/><ref> "Mastervolt präsentiert Photovoltaik-Speicher für Wohnhäuser auf der Intersolar Europe", abgerufen am 18. Mai 2014.</ref><ref> "Dabei setzt die Sonnenbatterie wie gehabt auf die sichere und effiziente Lithium-Eisenphosphat-Technologie...", abgerufen am 3. Juni 2014.</ref> | |||
| Partly also used batteries are used, which no longer have enough capacity for other applications for example pedelec or electric cars, as solar battery, but still sufficient. <ref>, elektroniknet.de, abgerufen am 24. Februar 2014.</ref><ref> Solarstromspeicher aus gebrauchten Fahrzeugakkus, abgerufen am 24. Februar 2014.</ref> | |||
| In Germany solutions <ref> Elektroauto-Rebell Karabag: "Unser Elektroauto-Konzept ist billiger als ein konventioneller Pkw" </ref> are realized in which use homeowners with solar systems the battery of their own electric cars to store energy. The green electricity provider Lichtblick put the solar batteries of its customers together to swarm battery which is then controlled centrally. Customers receive money for providing their memory. <ref> LichtBlick integriert Photovoltaik-Speicher in den Strommarkt </ref> | |||
| has a market overview of current storage systems available, the PV magazine <ref>'''', pv-magazine.de, abgerufen am 13. Januar 2016</ref> and C.A.R.M.E.N. e.V. <ref>'''', carmen-ev.de, abgerufen am 1. Juli 2014</ref> respectively created. | |||
| In Germany, solar batteries with lithium-ion batteries with a capacity of 4.4 kWh from 5,500 euros available (as of 1/2016). <ref> "Solarwatt macht Tesla Konkurrenz" abgerufen am 15. Januar 2016</ref> In Austria, solar batteries with lithium-ion batteries with a capacity of 4.5 kWh from 4,500 euros or 7 kWh from 8,000 euros available (as of 1/2016). Thus one has self-produced electricity for the night. Despite additional costs of operation of photovoltaic is therefore more economical. <ref> "Neue Speicher für Sonnenstrom" abgerufen am 24. Januar 2016</ref> | |||
| The ] offered in the USA by SolarCity incl. Installation with 10 kWh for $ 7,140. <ref> "Tesla Powerwall Price vs Battery Storage Competitor Prices (Residential & Utility-Scale)" abgerufen am 24. Januar 2016</ref><ref> "Wie günstig ist Teslas Powerwall wirklich?" abgerufen am 24. Januar 2016</ref><ref> "SolarCity Reveals Installed Pricing For Tesla Powerwall" abgerufen am 24. Januar 2016</ref> | |||
| ==See also== | |||
| *] | |||
| *] | |||
| ==References== | |||
| {{Reflist|30em}} | |||
| {{electronics-stub}} | |||
| ] | |||
| ] | |||
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