akkumulator   13

Tesla Powerpack to Enable Large Scale Sustainable Energy to South Australia | Tesla
This week, through a competitive bidding process, Tesla was selected to provide a 100 MW/129 MWh Powerpack system to be paired with global renewable energy provider Neoen’s Hornsdale Wind Farm near Jamestown, South Australia. Tesla was awarded the entire energy storage system component of the project.

Tesla Powerpack will charge using renewable energy from the Hornsdale Wind Farm and then deliver electricity during peak hours to help maintain the reliable operation of South Australia's electrical infrastructure. The Tesla Powerpack system will further transform the state’s movement towards renewable energy and see an advancement of a resilient and modern grid.

Working in close collaboration with the South Australian Government and Neoen, this grid scale energy storage project is not only sustainable, but will help solve power shortages, reduce intermittencies, and manage summertime peak load to improve the reliability of South Australia's electrical infrastructure. In addition, Tesla’s Powerwall is now being installed for residential customers across Australia and ramping up quickly. The same technology that can help stabilize the South Australian grid can also be used by homeowners to collect energy during the day so it is stored and made available day and night, providing uninterrupted power even if the grid goes down.
Tesla  Musk_Elon  Lithium-Ionen  Feinwerktechnik  Powerwall  Akkumulator 
july 2017 by snearch
Paris Klimagipfel: Bill Gates, Jeff Bezos, Jack Ma investieren Milliarden in saubere Energie - SPIEGEL ONLINE
Bill Gates, Jeff Bezos, Ratan Tata, Jack Ma: Einige weltbekannte Superreiche und 20 Staaten setzen den Ton für die Klimaverhandlungen in Paris. Sie wollen Milliarden in saubere Energie für Entwicklungsländer investieren.
...
Indien als Schlüsselland

Das Programm soll zum Beispiel Forschungs- und Entwicklungsarbeiten für Energiespeicher fördern. So verweist Bill Gates in seinem Statement ("Energie-Innovation - Warum wir Sie brauchen und wie wir sie bekommen") darauf, dass Benzin eine 60fach höhere Energiedichte hat als die aktuell besten Lithium-Ionen-Akkus - und auch Kohle um den Faktor 37 besser liegt. Die Speicherung von sauberem Strom müsse billiger werden - durch neue Technologien und eine bessere Vernetzung der Systeme.
Konferenz  Klimapolitik  Paris  Gates_Bill  Ma_Jack  Bezos_Jeffrey  Tata_Ratan  Breakthrough_Energy_Coalition  Zuckerberg_Mark  Plattner_Hasso  Whitman_Meg  Energiespeicher  Lithium-Ionen  Akkumulator 
november 2015 by snearch
Tesla-Schreck – Elektro-Porsche mit 600 PS und 500 km Reichweite
Antrieb mit Rekuperation

Der Antrieb des Mission E ist völlig neu. Zwei permanent-erregte Synchronmotoren beschleunigen den Sportwagen und gewinnen beim Bremsen Energie zurück. Zusammen leisten sie über 440 kW, katapultieren den Mission E in weniger als 3,5 s auf Tempo 100 und in unter 12 s auf 200 km/h.
PKW  Elektromobilität  Porsche  Mission_E  Feinwerktechnik  Ingenieur  800-Volt-Technik  Elektrotechnik  Synchronmotor  Torque_Vectoring  Lithium-Ionen  Technologie  Akkumulator 
september 2015 by snearch
Ask HN: Should I unplug my laptop charger at 100%? | Hacker News
bkanber 3 hours ago

Source: I have a master's degree in mechanical engineering in hybrid vehicle powertrains, and a big part of my research was battery technology. I spent some time working with the folks at National Semiconductor learning this, so I have several primary sources.

Disclaimer: my knowledge of the field is from ca 2010.

1) Lots of deep discharge cycles do negatively affect battery life. Try not to jump between 0% and 100% too much.

2) Li-ion batteries do not love being at 100% SOC (state of charge). As batteries become more dense, the membranes become thinner. High SOC equates to high chemical potential, which will break down membranes faster. As such, avoid leaving your battery at 100%. This wasn't as much of a problem with older batteries with thicker membranes, but is becoming more and more an issue as we try to squeeze every ounce of density out of batteries.

3) Roughly 70% SOC is where a battery is happiest, but the whole range of ~30-80% is pretty happy for a li ion cell. Try to keep your battery at ~70% or so overnight, at 50% or so for long sleeps.

A good usage pattern: plug in and let charge to 90%, unplug and use for a couple of hours, plug back in at 50% or so, rinse and repeat.

reply
Lebensdauer  maximieren  Akkumulator 
may 2015 by snearch

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