Re: Hybrid Smart Battery Almost As Cost Effective & A Lot More Likely Than A Super Battery
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Posted by Eeyore on September 16, 2008, 11:05 am
Please log in for more thread options John Bailey wrote: >
> >The pursuit of a "super" battery that could cheaply and efficiently
> >store energy all at a high density might not be the best use of time > >and resources. > > > >A more plausible solution would be a system of several different > >batteries with an electronic controller which would charge and > >discharge the various batteries depending on the source of power. >
> Include capacitive storage in your selection and you may have a > winner. Especially with regenerative braking as a power source. Have you ANY idea how hopeless the energy density is of even the best super-capacitors ? Graham | |||||||||||||
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Posted by DB on September 16, 2008, 12:40 pm
Please log in for more thread options Eeyore wrote: >
> John Bailey wrote: > >>
>>> The pursuit of a "super" battery that could cheaply and efficiently
>>> store energy all at a high density might not be the best use of time >>> and resources. >>> >>> A more plausible solution would be a system of several different >>> batteries with an electronic controller which would charge and >>> discharge the various batteries depending on the source of power. >> Include capacitive storage in your selection and you may have a
>> winner. Especially with regenerative braking as a power source. >
> Have you ANY idea how hopeless the energy density is of even the best > super-capacitors ? Maxwell is 6wh/kg. A few tens of kg of caps can greatly extend the life of the batteries for use during regenerative breaking. Note that the op said 'include', not 'in lieu of'. | |||||||||||||
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Posted by Eeyore on September 16, 2008, 7:15 pm
Please log in for more thread options
DB wrote: > Eeyore wrote:
> > John Bailey wrote:
> >>
> >>> The pursuit of a "super" battery that could cheaply and efficiently > >>> store energy all at a high density might not be the best use of time > >>> and resources. > >>> > >>> A more plausible solution would be a system of several different > >>> batteries with an electronic controller which would charge and > >>> discharge the various batteries depending on the source of power. > >> Include capacitive storage in your selection and you may have a > >> winner. Especially with regenerative braking as a power source. > >
> > Have you ANY idea how hopeless the energy density is of even the best > > super-capacitors ? >
> Maxwell is 6wh/kg. A few tens of kg of caps can greatly extend the life > of the batteries for use during regenerative breaking. > > Note that the op said 'include', not 'in lieu of'. He seems to want to use everything. Before long it'll resemble a Hummer. Graham | |||||||||||||
