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Das Elektroniker-Forum • Thema anzeigen - Li-Ion-Akkus mit regelbarem Netzteil laden?

Li-Ion-Akkus mit regelbarem Netzteil laden?

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Moderator: dussel07

Li-Ion-Akkus mit regelbarem Netzteil laden?

Beitragvon Bastelgern » 25.06.2010, 22:21

Moin, kann man Akkus wie mit einem regelbarem Netzteil (Strom und Spannung getrennt regelbar) laden?
Oder fehlt dafür evtl. noch eine Temperaturabschaltung?

Oder was muss ich dafür beachten?
Bastelgern
 

Re: Li-Ion-Akkus mit regelbarem Netzteil laden?

Beitragvon hws » 25.06.2010, 23:03

hws
 
Beiträge: 1081
Registriert: 11.01.2009, 18:58
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Re: Li-Ion-Akkus mit regelbarem Netzteil laden?

Beitragvon Bastelgern » 25.06.2010, 23:22

Bastelgern
 

Re: Li-Ion-Akkus mit regelbarem Netzteil laden?

Beitragvon fmmech » 26.06.2010, 18:03

..hmm..
Zu beachten wäre:
LiIon-Zellen mit einer Nenn-Spannung von 3,6V benötigen eine definierte Ladespannung von 4,10Volt
3,7V -> 4,20V
Ladestrom: je nach Datenblatt, aber 1C dürfen es schon sein.
Serien/Parallelschaltung mehrerer Zellen: spezielle Ladegeräte nutzen! (Balancer)
fmmech
 

Re: Li-Ion-Akkus mit regelbarem Netzteil laden?

Beitragvon Bastelgern » 27.06.2010, 13:03

Bastelgern
 

Re: Li-Ion-Akkus mit regelbarem Netzteil laden?

Beitragvon dussel07 » 27.06.2010, 14:54

Mal ne andere Frage -
Warum haben diese 14500 eine so geringe Leistungsdichte(nennt man das so?)
Im Vergleich sind normale AAs fast gleichwertig.
Ich meine gelesen zu haben das LiIo Akkus eher in Richtung doppelter Leistungsdichte im Vergleich zu NiCa haben?
1,2V x 2,5Ah = 3Wh
3,7V x 0,9Ah = 3,3Wh
Ja, - ich bin Zwilling
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Registriert: 30.04.2009, 21:04
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Re: Li-Ion-Akkus mit regelbarem Netzteil laden?

Beitragvon Bastelgern » 27.06.2010, 16:29

Bastelgern
 

Re: Li-Ion-Akkus mit regelbarem Netzteil laden?

Beitragvon dussel07 » 27.06.2010, 22:16

Da wäre dann interessant was effizienter arbeitet:
Step Up
oder
Step Down
Ja, - ich bin Zwilling
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dussel07
 
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