NetNews Usenet Archive 1992 #31/NN_1992_31.iso/spool/sci/energy/6313

Internet Message Format | 1992-12-21 | 1.2 KB

Path: sparky!uunet!pipex!bnr.co.uk!uknet!mcsun!sun4nl!rivm!mtvahb
From: [e-mail] (Aldrik Bakema)
Newsgroups: sci.energy
Subject: Re: electric fuel gauges
Message-ID: <[e-mail]>
Date: 21 Dec 92 13:26:04 GMT
References: <[e-mail]>
Sender: [e-mail]
Organization: Rijksinstituut voor Volksgezondheid en Milieuhygiene,Bilthoven,NL
Lines: 14
X-Newsreader: TIN [version 1.1 PL8]

I'm not an expert in this, but would it not be possible tu 'use up',
say, 5 cells or so at a time, switching to the next 5 whenever the
first 5 get low. This way you would know quite precisely how much
'fuel' you have left, and at the same time take care that all cells
are discharged deep enough now and then, as I understand is necessary
for NiCads. The reason I guess some sort of scheme like this would
be possible, is that in cars it's not so much the maximum power that
is limiting, but the maximum storage capacity. So, it should be possible
not to use all celss at the same time, and still get your normal performance.
Of course the number of cells connected at one time depends on tehir size
and capacity. The number 5 is just used as an example.
Comments?

Aldrik Bakema