Scanning for Chevy Bolt codes or live-data

billr

wrench
Staff member
Joined
Mar 12, 2007
Messages
6,673
Points
48
It never occurred to me to look at what the semi-con vendors are already providing; wading through their data-sheets will be a big job, but should give some real insight.

That Swedish slot-car road; are they serious, or is that just a "cold zone" joke that us warm wimps don't get??? The only big difference between that and overhead wires that have been powering city trolleys for about 100 years is that the exposed live electric conductor to tap is right down on the ground. Besides the problems of water and crud getting into it, it is right there for every species of animal, endangered or not, to get fried (including humans). Roads with inductive power transfer would eliminate those problems, but I think the efficiency is too low to be practical; the air gap has to be large enough for real-life roads.

I understand now that the motor shaft sheared/twisted off, there is probably supposed to be a spline on the end of it; but I am still puzzled as to why. I think there must be a flaw in the motor-controller to allow driving/braking of the motor so severe that the shaft failed. Or, the shafts are defective in design/material/manufacture. I don't see much fillet in that groove of the shaft where it failed! One old trick is to have a female spline in the motor with a short male-to-male spline shaft coupler that is deliberately weak and will twist off as an overload "fuse". Make it cheaper and easier to replace than a whole motor.
 
Last edited:

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
10,764
Points
63
Location
St-Hyacinthe, Quebec, Canada
That Swedish slot-car road; are they serious, or is that just a "cold zone" joke that us warm wimps don't get???
I think you got my subtle humor there.
:p

The explanation I was told for the shear off mg1 I think was particulate in oil caused a degradation of magnets, unit shorted directly and that was it. I don't really have any thing else to call on that, but apparently, Kia is getting a few of these. I don't know if the pic showed the other identical next to it, the shaft survived, but motor is shot, seized. Sadly, no rebuild kits yet out, replace unit.
 

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
10,764
Points
63
Location
St-Hyacinthe, Quebec, Canada
Roads with inductive power transfer would eliminate those problems, but I think the efficiency is too low to be practical; the air gap has to be large enough for real-life roads.
Yeah, that was in the works for awhile, as you aptly wrote, not practical. Cool idea, but you just can't make a road into a smart table like I have seen on tv, and thx for being smarter than me, you use words that are better, and yes, air gap was the problem, I don't know how they will circumvent, heard of 5g tech that will give impulses, but not yet, the grid is not fully deployed yet, but it is in the works, I should have copied that link, I will try to find that today, it was very interest to read, cool tech. I say cool alot. ;) Especially when I read up, learn and work with this stuff, I feel like a kid again.
 

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
10,764
Points
63
Location
St-Hyacinthe, Quebec, Canada
So I think the principle is much the same as a smart charging table, or pc desk per say, how it will be implemented is beyond me, I am just pissed I can't find the link, it is the future. The term ubiquitous charging comes to mind, but not sure if even that is correct.

Ok, found it, it is a long read, but mostly I want to say, I have been told, this IS going to happen soon.

I hope I am not infringing forum rules, but hey, never stopped me before but I just read it again, say no copyright mention, it is open source and very interesting to read and pertinent to this thread. Here in pdf to read at your convenience when you have down time if you are interested.
 

Attachments

billr

wrench
Staff member
Joined
Mar 12, 2007
Messages
6,673
Points
48
I didn't finish reading that paper on wireless power transfer, but it is quite interesting. It looks like the effective efficiency, with reasonable air gap, is about 75%. That is better than what I was expecting.

The real "take away" though? I will gladly tolerate Nickb2's fondness for random video postings, since he is also tireless in posting useful info like this that I want!
 
Top