Live data from Hacker News

Inside a Tesla Model S Battery Pack

teslamotorsclub.com

41–50 of 83 posts

Re: Inside a Tesla Model S Battery Pack

#41
post #28
post #23

Earlier quoted context omitted.

It appears he was serving them off his personal NAS. Whoops.

His copyright notice and explanatory paragraphs make it clear he's trying to keep some level of control over those photographs, while still sharing them with "his community" - which means I feel a little uneasy about having archive.org unilaterally slurp the images up like that... I know it's kind of a losing battle, but "publicly available" does not mean "in public domain".

Archive.org respects robots.txt. Nothing unilateral about it.

Re: Inside a Tesla Model S Battery Pack

#42
post #28
post #23

Earlier quoted context omitted.

It appears he was serving them off his personal NAS. Whoops.

His copyright notice and explanatory paragraphs make it clear he's trying to keep some level of control over those photographs, while still sharing them with "his community" - which means I feel a little uneasy about having archive.org unilaterally slurp the images up like that... I know it's kind of a losing battle, but "publicly available" does not mean "in public domain".

I've never seen such an aggressive and hostile copyright notice in a forum signature before. It's not entirely clear that you can even claim copyright over trivial online comments.

Re: Inside a Tesla Model S Battery Pack

#43
post #28

Earlier quoted context omitted.

His copyright notice and explanatory paragraphs make it clear he's trying to keep some level of control over those photographs, while still sharing them with "his community" - which means I feel a little uneasy about having archive.org unilaterally slurp the images up like that... I know it's kind of a losing battle, but "publicly available" does not mean "in public domain".

I've never seen such an aggressive and hostile copyright notice in a forum signature before. It's not entirely clear that you can even claim copyright over trivial online comments.

It's not entirely clear that you can even claim copyright over trivial online comments.

Trivial or not, you have copyright in your own writings, online or off-line. Each participant on HN owns the copyright in the written expression of his or her comments. Similarly, a photographer has copyright in photographs taken by that photographer. See a user profile of a high-karma HN participant

https://news.ycombinator.com/user?id=tptacek

for an example of asserting copyright in HN comments, something that any of us could do, because the copyright is already there under modern copyright law, and asserting the copyright openly and publicly helps battle infringement.

Re: Inside a Tesla Model S Battery Pack

#44
post #28
post #23

Earlier quoted context omitted.

It appears he was serving them off his personal NAS. Whoops.

His copyright notice and explanatory paragraphs make it clear he's trying to keep some level of control over those photographs, while still sharing them with "his community" - which means I feel a little uneasy about having archive.org unilaterally slurp the images up like that... I know it's kind of a losing battle, but "publicly available" does not mean "in public domain".

Being possibly the first photos of the inside of a Model S battery sled, I understand his desire to protect them from getting spread around and used by others. Seems sensible to me.

Re: Inside a Tesla Model S Battery Pack

#45

Earlier quoted context omitted.

I've never seen such an aggressive and hostile copyright notice in a forum signature before. It's not entirely clear that you can even claim copyright over trivial online comments.

It's not entirely clear that you can even claim copyright over trivial online comments. Trivial or not, you have copyright in your own writings, online or off-line. Each participant on HN owns the copyright in the written expression of his or her comments. Similarly, a photographer has copyright in photographs taken by that photographer. See a user profile of a high-karma HN participant https://news.ycombinator.com/u…

There is the complication that photographs of 2D works of art intended to represent the original are not subject to copyright, so some of those photos might not be either if someone with enough money wanted to press the issue. (Not a lawyer)

Re: Inside a Tesla Model S Battery Pack

#46

That was one very quick trip to the recycler, pack dates from August 2013. Crashed car? Totally nuts to work with DC voltages this high without taking safety precautions. Anything over 50V DC is to be treated with very serious respect. AC is different, you get a good number of opportunities to dis-engage, but with DC your muscles contract and that's that. I'd rather mess with 2 KV AC than with 200 V DC. Lovely engine…

Not sure where this myth started, the idea that somehow AC is less dangerous to handle at high voltages over DC. Wall socket AC alternates at ~50Hz, that's an oscillation every 0.02sec, for perspective, the average human reaction time is in the range of 0.15 to 0.3sec [Wikipedia]. There almost no chance that you willingly disengage a circuit once it's made for both high voltage AC or DC. Be careful whenever handling…

[deleted]

Re: Inside a Tesla Model S Battery Pack

#47

Earlier quoted context omitted.

I've never seen such an aggressive and hostile copyright notice in a forum signature before. It's not entirely clear that you can even claim copyright over trivial online comments.

It's not entirely clear that you can even claim copyright over trivial online comments. Trivial or not, you have copyright in your own writings, online or off-line. Each participant on HN owns the copyright in the written expression of his or her comments. Similarly, a photographer has copyright in photographs taken by that photographer. See a user profile of a high-karma HN participant https://news.ycombinator.com/u…

A work must be creative enough to earn copyright. Most tweets would not qualify, for example. You can assert anything you want without it being legally enforceable.

Re: Inside a Tesla Model S Battery Pack

#48
post #18

Seems like there is a lot of room for improvement? Reducing the sheer number of casings on individual cells would radically reduce weight/volume. Then with less groups of cells you could actually have the BMS monitor them like my lifepo lithium battery for bicycle.

I'm pretty sure the casings are there for fire isolation

Re: Inside a Tesla Model S Battery Pack

#49

Earlier quoted context omitted.

Not sure where this myth started, the idea that somehow AC is less dangerous to handle at high voltages over DC. Wall socket AC alternates at ~50Hz, that's an oscillation every 0.02sec, for perspective, the average human reaction time is in the range of 0.15 to 0.3sec [Wikipedia]. There almost no chance that you willingly disengage a circuit once it's made for both high voltage AC or DC. Be careful whenever handling…

That's not a myth, it's a fact and reaction time has nothing to do with it. You're not consciously pulling back, your muscles will simply stop contracting for a short bit after which you (hopefully) disconnect. The DC damage is a condition called 'muscular tetanus'. The main risk with AC at medium voltages (say 40 to 250 V) is that your heart goes haywire. Though those voltages could easily kill you too. Yes, you sho…

What's your battery pack for?

Re: Inside a Tesla Model S Battery Pack

#50
post #44
post #28

Earlier quoted context omitted.

His copyright notice and explanatory paragraphs make it clear he's trying to keep some level of control over those photographs, while still sharing them with "his community" - which means I feel a little uneasy about having archive.org unilaterally slurp the images up like that... I know it's kind of a losing battle, but "publicly available" does not mean "in public domain".

Being possibly the first photos of the inside of a Model S battery sled, I understand his desire to protect them from getting spread around and used by others. Seems sensible to me.

So people don't accidentally learn something? If you take the time to post the photos I don't know why you would not want people to see them. I could see his point if he was running a Tesla related business or that was his website, but he just seems like an enthusiast.
Post reply on HN