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Tesla Model S: the story of a very short happiness and excitement

dmitryzavyalov.livejournal.com

211–213 of 213 posts

Re: Tesla Model S: the story of a very short happiness and excitement

#211

Earlier quoted context omitted.

That's clearly a product decision!

I'm sorry, can you elaborate?

I would be extremely surprised if an engineer would allow a warning message to be displayed and not emit a log line for it as well. That sounds more like a decision a product manager would have made.

Re: Tesla Model S: the story of a very short happiness and excitement

#212
post #139

Earlier quoted context omitted.

> The incentive structure at a dealer service department is the exact opposite of favorable to the customer. As is at the doctors. A doctor should be paid for not seeing you.

Hah, never really thought of it that way. That doesn't seem quite right though, do you mean a doctor should be paid for you not needing to be seen ?

That's it. Because you are healthy. That would change our whole medical system from fixing sympthoms to preventive healthcare

Re: Tesla Model S: the story of a very short happiness and excitement

#213

Earlier quoted context omitted.

Electric cars are notoriously unreliable because there are just that many things that can go wrong. For example, a battery pack on average will monitor about 400 temperatures and perhaps 200 voltages. Its inherent design means that it undergoes many thermal cycles, has thousands of fasteners and up to a hundred switching circuity components inside various isolated power supplies. The deviation of any parameter from n…

You don't actually have to measure individual cell temperatures and voltages. A thousand fasteners is nothing special, and you don't need to have circuitry on each cell either. You're making batteries out to be much more complex than they actually are.

I am not, and it is necessary to measure the temperature of the batteries in at least some locality, as batteries can short out and go into thermal runaway. Although their construction can avoid a full battery pack fire, if you don't shut down the tractive system immediately you will run current through them and charge them negatively. Then you will get a fire from surrounding cells.
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