Dino
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Quick Charging

Thu Nov 17, 2011 7:28 am

Why don’t they use the EV’s “motor controller” as a charger? It seems to me that you could disconnect the motor and connect power directly to the controller and charge the battery as you would during braking regen. Even if had to be three phase and you couldn’t do it at home, couldn’t it replace the need for a DC quick charger? But I guess the rate or kw capacity would be limited to what the controller is capable of delivering, probably need more cooling for the controller among other things But might we see this in the future? Or am I missing something.
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TomT
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Re: Quick Charging

Thu Nov 17, 2011 7:32 am

AC Propulsion has a patent on this technology and, perhaps, Nissan did not want to pay to license it. But, yes, it does make far more sense and was used on vehicles such as the Mini-E. As in the Mini, it does also generally allow for much higher charging rates.

Dino wrote:Why don’t they use the EV’s “motor controller” as a charger? It seems to me that you could disconnect the motor and connect power directly to the controller and charge the battery as you would during braking regen. Even if had to be three phase and you couldn’t do it at home, couldn’t it replace the need for a DC quick charger? But I guess the rate or kw capacity would be limited to what the controller is capable of delivering, probably need more cooling for the controller among other things But might we see this in the future? Or am I missing something.
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Dino
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Re: Quick Charging

Thu Nov 17, 2011 7:54 am

TomT wrote:AC Propulsion has a patent on this technology and, perhaps, Nissan did not want to pay to license it. But, yes, it does make far more sense and was used on vehicles such as the Mini-E. As in the Mini, it does also generally allow for much higher charging rates.


Interesting. Thanks
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Dino
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Re: Quick Charging

Thu Nov 17, 2011 8:10 am

I suppose someone has a patent on using the “motor controller” for V2G too. I guess don’t really get the whole “patent” thing. It seems to put a damper on progress in the name of profit, eg. Bloom energy
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TomT
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Re: Quick Charging

Thu Nov 17, 2011 8:15 am

I certainly would not argue against the supposition that the U.S. patent system is seriously broken...

Dino wrote:I suppose someone has a patent on using the “motor controller” for V2G too. I guess don’t really get the whole “patent” thing. It seems to put a damper on progress in the name of profit, eg. Bloom energy
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Re: Quick Charging

Thu Nov 17, 2011 8:19 am

No kidding. At least this patent is owned by someone who is actually using it (unlike all those trolls who collect dusty patents for the sole purpose of extorting money from companies with real products).

TomT wrote:I certainly would not argue against the supposition that the U.S. patent system is seriously broken...

Dino wrote:I suppose someone has a patent on using the “motor controller” for V2G too. I guess don’t really get the whole “patent” thing. It seems to put a damper on progress in the name of profit, eg. Bloom energy

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Re: Quick Charging

Thu Nov 17, 2011 8:45 am

Dino wrote:I suppose someone has a patent on using the “motor controller” for V2G too. I guess don’t really get the whole “patent” thing. It seems to put a damper on progress in the name of profit, eg. Bloom energy
You may suppose correctly. This is from the AC Propulsion website:

In 1994, AC Propulsion unveiled the AC-150, an innovative 200 horsepower integrated drive system for compact to mid-size passenger cars that attained 0-60 mph acceleration in 6.2 seconds and a 145-mile range. In 1997, AC Propulsion introduced the original tzero™ sports car at the LA Auto Show, and showcased its capability for 0-60 mph in 4.9 seconds, while reliably achieving a 80-100 mile driving range. In 2006, AC Propulsion created the eBox, the world's first vehicle-to-grid (V2G) capable electric vehicle.

Since then, AC Propulsion has issued and owns 6 patents on electric vehicle technology, many of which have been customized for our technology and automotive customers globally.
They are known to be particularly aggressive when alleging patent infringement.
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