Researchers at Penn State claim they have found a way to recharge an EV in 10 minutes and are targeting 5-minute recharging times in the near future.”We demonstrated that we can charge an electrical vehicle in ten minutes for a 200 to 300 mile range,” says Chao-Yang Wang. “And we can do this maintaining 2,500 charging cycles, or the equivalent of half a million miles of travel.” Wang is chairman of the mechanical engineering department as well as a professor of chemical engineering and materials science. He is also director of the Electrochemical Engine Center at Penn State.

The problem, Wang found in his research, is that lithium-ion batteries degrade when charged rapidly at ambient temperatures under 50 degrees Fahrenheit because the lithium deposits in spikes on the anode surface. Such lithium plating reduces cell capacity and can cause electrical spikes and unsafe battery conditions. The trick? Heat up cold batteries to a level higher than the lithium plating threshold.

Wang and his team realized that if they heat batteries to 140 degrees F | 60° C for only 10 minutes and then rapidly cool them back down to ambient temperature, lithium spikes will not form and heat degradation of the battery will not occur. Their results of the research can be found in the October 30, 2019 issue of the scientific journal Joule. “The 10 minute trend is for the future and is essential for adoption of electric vehicles because it solves the range anxiety problem,” says Wang.

The trick is to heat the battery rapidly and then cool it back down quickly. (Tesla and some other companies already pre-condition batteries for charging by heating them but do not get them as hot as the Penn State team did.) The researchers say their self-heating battery uses a thin nickel foil with one end attached to the negative terminal and the other extending outside the cell to create a third terminal. A temperature sensor attached to a switch causes electrons to flow through the nickel foil to complete the circuit. This rapidly heats up the nickel foil through resistance heating and warms the inside of the battery according to a Penn State blog post. They say the car’s own battery cooling system would take care of the cooling phase (which leaves Nissan out of the picture).

Starting today, we’re launching Tesla Insurance, a competitively priced insurance offering designed to provide Tesla owners with up to 20% lower rates, and in some cases as much as 30%. Tesla Insurance offers comprehensive coverage and claims management to support our customers in California, and it will expand to additional U.S. states in the future.

Elon Musk @elonmusk
for 22 minutter siden

Starting next month, Tesla will charge $1000 for color black (same price as silver)
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Dealer of Happiness @dealer_of_happy
for 21 minutter siden

Will there be a standard/free color?
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Elon Musk @elonmusk
Svar til @dealer_of_happy

A simple white (not pearl multi-coat)
11:24 - 19. jun. 2019

5. april 2019 kl. 13:22 Bilprodusenter med ulovlig samarbeid

De tre tyske bilgigantene VW, Daimler og BMW drev ulovlig samarbeid for hindre utvikling av teknologi som skulle slippe utslipp, opplyser EU-kommisjonen. Det ulovlige samarbeidet skal ha foregått i perioden 2006-2014, melder Ritzau.

The Electric Airplane Revolution May Come Sooner Than You Think
Eviation’s Alice is an all-electric, nine-person aircraft that may help replace fossil fuel-burning commuter planes.
An all-electric mini-airliner that can go 621 miles on one charge and replace many of the turboprops and light jets in use now—flying almost as far and almost as fast but for a fraction of the running costs—could be in service within three years. But this isn’t another claim by another overoptimistic purveyor of electric dreams. It’s using current technology, and the first planes are being built right now. In fact, the process of gaining certification from aviation regulators for what would be the world’s first electric commuter plane has already started.

The pressurised Alice from Israeli company Eviation is a graceful-looking composite aircraft with one propeller at the rear and another at the end of each wing, placed to cut drag from wingtip vortices. Each is driven by a 260 kW electric motor, and they receive power from a 900 kWh lithium ion battery pack.

Alongside its 650 mile range, the pressurised $3 million-plus Alice can carry nine passengers and two crew, and cruise at 276 mph – up there with the speed of the turboprops that are widely used in the commuter role, if not anywhere near that of jets. But crucially, says Eviation chief executive Omer Bar-Yohay, “operating costs will be just 7 to 9 cents per seat per mile,” or about $200 an hour for the whole aircraft, against about $1,000 for turboprop rivals.

NAF etterlyser elbil-svar

Om bare sju år vil det nesten ikke selges en dieselbil i Norge, ifølge nye beregninger. Folk kjøper heller elbil. Bilforeningen NAF ønsker svar fra regjeringen på om fordelene for elbil fortsetter.

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– Dieselbilen er død om bare sju år, hvis fordelene for elbil videreføres som nå, sier NAFs kommunikasjonssjef, Inger Elisabeth Sagedal.

... denne kunne kanskje også vært postet i dieselkistespikertråden

Hurtigruten setter i gang den største miljøoppgraderingen i selskapets historie, skriver Hurtigruten i en pressemelding.

Nesten hele flåten skal bygges om til hybriddrift – med gassmotorer og batteripakker.

Hurtigruten signerte fredag en intensjonsavtale med Rolls-Royce Marine om leveranse til oppgraderingsprogrammet for skipene, som hovedsakelig skal brukes i Kystruten Bergen–Kirkenes.