Hardly... I added solar cells on the roof of My two Prius back in the 2007 time frame and I figure the solar panels on my house are about 1000 times more cost effective than the ones on my car.
That’s because I have 100 times more surface area on my house and the cost of small format solar panels to fit on the roof of a car cost about TEN times per watt as much as the home solar panels do. Hence. 1000 to one. On a summer day, with 200W of solar panels on my car roof, I get about 200 Whrs per hour or about 1 km per hour. But the solar panels cost $2000. I’d never do it again now that I have home solar. Oh, and in winter, the 200W of solar panels on the car maybe produce 20 watts due to the low angle of the sun. That is only enough to go about 100 meters. Better to walk. See http://aprs.org/APRS-SPHEV.html Bob -----Original Message----- From: EV [mailto:[email protected]] On Behalf Of Cor van de Water via EV Sent: Monday, September 21, 2015 12:23 AM To: Electric Vehicle Discussion List Subject: Re: [EVDL] EVLN: Perovskite solar cells may power electric cars Unfortunately the only useful bit of information is missing: how much efficiency is expected in future with this technology? At this moment the efficiency of just over 12% is underwhelming, because mass produced cheap silicon PV easily reaches 15% and in labs there have been versions that go to the 30% range. The issue with recharging on the car itself is the limited area requires an order of magnitude better efficiency than existing silicon PV to be practical as main energy source. Which means that the efficiency must be well above 50% at low mass-produced prices, in order to make on-car PV practical. Since the article does not mention the expected limit of efficiency or even the next steps, it does not help but to give me a feeling that this is a "different but not better" alternative to the same problem as silicon PV. I may be wrong. In fact, I hope I am. Cor van de Water Chief Scientist Proxim Wireless office +1 408 383 7626 Skype: cor_van_de_water XoIP +31 87 784 1130 private: cvandewater.info www.proxim.com This email message (including any attachments) contains confidential and proprietary information of Proxim Wireless Corporation. If you received this message in error, please delete it and notify the sender. Any unauthorized use, disclosure, distribution, or copying of any part of this message is prohibited. -----Original Message----- From: EV [mailto:[email protected]] On Behalf Of brucedp5 via EV Sent: Sunday, September 20, 2015 12:35 AM To: [email protected] Subject: [EVDL] EVLN: Perovskite solar cells may power electric cars http://ecomento.com/2015/09/14/perovskite-solar-cells-may-power-electric-cars/ Perovskite solar cells may power electric cars September 14, 2015 | [image / Bolloré BlueCar http://cdn.ecomento.com/wp-content/uploads/2015/09/Perovskite-solar-cells-electric-cars.jpg (BlueCar EV) ] The difference between perovskite and silicon when it comes to making solar cells is that perovskite reacts to a broader range of visible light frequencies, which means it converts more sunlight to electricity than silicone does. Researchers at Case Western Reserve University have been experimenting with the use of small perovskite solar cells to help recharge the batteries of electric cars and say they have come up with a system that performs better than any other. They wired four perovskite solar cells in series to directly photo-charge lithium batteries with 7.8 percent efficiency. That is the most efficient configuration reported to date. “We found the right match between the solar cell and battery. Others have used polymer solar cells to charge lithium batteries, but not with this efficiency,” said Liming Dai, the leader of the research team, adding that the coupling appears to have outperformed all other reported pairings of photo-charging components and compatible batteries or super-capacitors. Dai’s lab created cells with three layers converted into a single perovskite film and then wired four of the 1 mm square cells in series, achieving a solar-to-electric power conversion efficiency of 12.65 percent. When hooked up to charge small coin-sized lithium-ion batteries, the team achieved a conversion and storage efficiency of 7.8 percent and maintained it over a number of cycles. “We envision, in the not too distant future, this is a system that you could have at home to refuel your car and, eventually, because perovskite solar cells can be made as a flexible film, they would be on the car itself,” said contributing author Jiantie Xu. There are a number of new ideas for keeping the batteries of electric cars charged. Goodyear is working on tires that recapture electricity while driving and other companies are experimenting with shock absorbers that turn road motion into electricity. Extending the range of electric cars is critical to getting mainstream buyers to consider owning one. There are solar powered cars out there, but they all have large solar panels mounted to the exterior. Probably the most appealing of them is the Immortus sportscar from Australia, that tries to blend its solar panels in with the body work. The beauty of the perovskite cells may be that they allow recharging a battery without disrupting the styling of a car too much. Further down the road will be photovoltaic paints that convert sunlight directly to electric power for the cars of tomorrow. [© ecomento.com] ... http://www.gizmag.com/lithium-ion-car-battery-charge-perovskite-solar-cell/39157/ Tiny solar cells could soon charge electric vehicles while on the road Eric Mack August 28, 2015 [image http://images.gizmag.com/gallery_lrg/perovskite-car.jpg Perovskite solar cells, which are much smaller than traditional panels, could soon revolutionize electric vehicle charging (Credit: Shutterstock) ] ... https://en.wikipedia.org/wiki/Perovskite_solar_cell Perovskite solar cells For EVLN posts use: http://evdl.org/evln/ http://siouxcityjournal.com/news/south-sioux-city-embraces-electric-cars-wind-solar-options/article_34f36197-8015-5691-a725-c30ce77c2233.html L2 EVSE in S.Sioux_City-NE http://www.plugshare.com/?location=16353 http://mynewsla.com/government/2015/09/12/torrance-officials-mark-opening-of-6-electric-charging-stations/ 6 NRG EVgo L2 EVSE @Torrance-CA + EVLN: gulfcoast.edu Students converted 1992 Miata ice-to-EV 4times {brucedp.150m.com} -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-Perovskite-solar-cells-may-power-electric-cars-tp4677666.html Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com. _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
