HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Page 1/4  >  >>
William K.
User Rank
Platinum
25 days and no challenges about efficiency.
William K.   6/7/2014 7:27:47 PM
NO RATINGS
Possibly the subject is boring, but it would be quite an accomplishment if somebody did come up with a much more efficient wireless charging system. Say, at least 95% of the input power sent to the battery charger.

But now I have a different idea, which is that since the big problem is the inconvenience of plugging in that monster connector, how about a simple direct contact connection? Use the front bumper as the charging power connector: split the two bumper halves with an insulator and then have a spring loaded post in front of each side, far apart enough o make touching both unlikely. After contact is made then the system does an "electronic handshake" to verify that it is a car needing charging that is present, then switch on the power. At the end of the charge the car tells the controller that charging is done, and the power switches off. Of course there would be exposed electrical contacts, but only the stupidest 10% would electrocute themselves, the rest would know to stay away from live circuits. There would be no engineering breakthrough needed, only an adjustment to the laws so that stupidity would not be rewarded. And the connection efficiency would certainly be better than 98%.  And it would be simpler and cheaper than a magnetic syst6em.

William K.
User Rank
Platinum
Re: But what about the efficiency? Still asking.
William K.   5/9/2014 6:22:06 PM
NO RATINGS
The big question is will it be accepted to waste 20% of the 20 KWH or so that is to be recharged into the battery? And who will make that decision? And if they can mandate improved efficiency for those little wall-warts then why not for the big car charging packages? My belief is that those making the laws are far separated from reality and understanding and that they don't see any problem with misleaing presentations. 

Somebody somehow needs to present some rational reasoning here.

benmlee
User Rank
Gold
Re: But what about the efficiency? Still asking.
benmlee   5/6/2014 12:09:15 PM
NO RATINGS
This "new" invention comes out every few months. Got to swat this thing out of existence. Let's repeat this again: No! No! No! Is that clear. The original GM EV1 had a non-contact charge paddle. Even that was only about 80% efficiency. It was horrible. The entire purpose of electric vehicle is efficiency. Here you are loosing at least a third before even getting to the car. WHY? This does not make sense. Don't even start down this road. Unfortunately, you got people who are dazzled by another "new" technology.

William K.
User Rank
Platinum
Re: Said before... will say again
William K.   4/11/2014 7:01:31 PM
NO RATINGS
If the government believes that they are right in mandating efficiency increases in those very small "wall-wart" devices then I certainly hope that the same sort of rules wind up being made to apply to the wireless charging systems, which are terribly inefficient. But it seems that the glamerous thing gets away with whatever it wishes to do.

And still there does not seem to be much discussion on the potential bad effects delivered by that energy radiated that does not make it into the targeted battery system.

Once again, truth is missing.

And if an individual is so very inconvenienced by plugging in to charge, then my evaluation is that probably they don't even deserve to drive any car.

AND here is another concern not previously discussed, which is that if charging commences whenever the vehicle would be parked it will only be a few hours before some much less honorable individuals establish some very expensive charging points, and rob the poor unsuspecting drivers with very high charging fees. And how will a driver know what they are being charged until the bill arrives. So there you have the ultimate fault of wireless charging systems. So those "dirty" fossile fuels will be replaced by the chance to be robbed every time one parks their vehicle. Not quite a fair trade, I don't believe. But definitely a potential consequence of what the unthinking believe to be a good idea.

Ceylon0
User Rank
Silver
Said before... will say again
Ceylon0   4/11/2014 9:55:03 AM
NO RATINGS
This is where the technology needs to go. If charging is ubiquitously everywhere, electric cars will predominate for most transportation needs that are not continuous duration, long haul. People are just stuck in the paradigm that they have to go to a gas station to fill up their fuel. If every time they parked their car began to charge wirelessly, it would destroy the paradigm the dirty fossil fuels industry relies on to convince shallow thinkers that combustion engines are the best most cost effective technology. I find people in America still believe the price of a gallon of gas is what they pay at the pump; they never consider the costs hidden in the military being used to defend the fossil fuels industry, as well as that hidden in the dangerous environmental effects fossil fuel use is demonstrably having on the environment. As usual some fools are happy with the fossil fuels industry privatizing their profits and and socializing their costs.

William K.
User Rank
Platinum
Re: Efficiency Vs. Lazy
William K.   2/7/2014 2:41:45 PM
NO RATINGS
e-007, the belief that there is no need to understand anything does not make me laugh, but rather feel like the clowns are running the asylum, or worse. It is a quite uncomfortable feeling that I am not respected at all for my engineering knowledge and talents, while some punk who dresses to the latest fad gets all of the aclaim, and a lot more income, which really offends me, by the way. 

Right now I am seeing problems brought on by others ignoring my requests to do things differently than they had in the past. I would like to tell them "I TOLD you so", but the problems are here and real and that would not do any good. Of course, I did not press the issue back then because after being told I didn't know what I was talking about so many times I developed an attitude that I would let them "put thier hands in the fire."

The old line seems to be true: "You can't fix stupid." What a pity.

ervin0072002
User Rank
Gold
Re: Efficiency Vs. Lazy
ervin0072002   2/7/2014 11:16:18 AM
NO RATINGS
Very True William K our schools today cater to the average idiot not to the average genius. Too easy is making a lot of people believe that knowing very little is ok. In reality it leads to poverty and many other things including one paying more than 10 dollars for a system that links the grid to your car??? I mean really a wire can do the job and a plug why bother with electronics that you don't understand how they work???? Tech like this makes me laugh most of the time.

William K.
User Rank
Platinum
Re: Efficiency Vs. Lazy
William K.   2/6/2014 7:47:24 PM
NO RATINGS
E007, Lazy or "luxury"? Or just plain not competent enough to be able to get the car plugged in correctly. There is a whole class of people unable to change a light bulb without getting it cross-threaded. And anothe bunch of people who see no problem at all with that. The lack of any skill and understanding is quite likely what will bring about the end of our great country, which while true is certainly a terrible way to go.

ervin0072002
User Rank
Gold
Efficiency Vs. Lazy
ervin0072002   2/6/2014 9:15:55 AM
NO RATINGS
It will either become outlawed or people will realize the inefficiency of this process and quit using it. There are always optimists that are looking to make a quick buck off of lazy people. With phones I guess it's acceptable because of the low amount of energy exchanging hands but with a car where thousands of kWh is drawn I would consider a more efficient way.

William K.
User Rank
Platinum
But what about the efficiency? Still asking.
William K.   1/28/2014 3:36:41 PM
NO RATINGS
The issue of undesirable heath effects is still up for grabs and will of course depend on how much of that radiated power is NOT recovered. None of the power that goes into charging the batteries is a problem, but all of the lost power could certainly be a problem.

BUT as the proponents of wireless charging of all kinds of things keep teling us how wonderful it is, THEY NEVER EVER TALK ABOUT ACTUAL EFFICIENCY, except possibly in some of the most confusing doubl-speak that I have ever come across. A Normal expression of efficiency, power out / power in is all that I am asking for and that should not be so very challenging to calculate. My feeling is that the efficiency is so very poor that it would kill the idea without any additional discussion. So my suggestion is that until the wireless charging sales people are willing to give actual numbers in standard units, that they be regarded as just plain liars. There is no way to make a problem go away just by refusing to talk about it. We need to see actual , reproducable, numbers to back up all those claims about it being so wonderful.

Page 1/4  >  >>


Partner Zone
Latest Analysis
Some of our culture's most enduring robots appeared in the 80s. The Aliens series produced another evil android, and we saw light robot fare in the form of Short Circuit. Two of the great robots of all time also showed up: The Terminator and RoboCop.
Two students have created a voice-command system for our homes, based on the simple and affordable Raspberry Pi.
Optomec's third America Makes project for metal 3D printing teams the LENS process company with GE Aviation, Lockheed, and other big aerospace names to develop guidelines for repairing high-value flight-critical Air Force components.
This Gadget Freak review looks at a cooler that is essentially a party on wheels with a built-in blender, Bluetooth speaker, and USB charger. We also look at a sustainable, rotating wireless smartphone charger.
Texas Instruments is rolling out a new microcontroller that could make the design of sensor networks and data logging systems simpler and less costly.
More:Blogs|News
Design News Webinar Series
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
6/25/2014 11:00 a.m. California / 2:00 p.m. New York
5/13/2014 10:00 a.m. California / 1:00 p.m. New York / 6:00 p.m. London
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jul 21 - 25, Design Products With Bluetooth Low Energy
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: August 12 - 14
Sponsored by igus
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service