Batteries and New Battery Technologies

[montero]

2.5m GPS module 4EUR.

 

[brian eiland]

Lets get back to developments of solid state batteries. Here's a video I saw on some Chinese work,..

and correct me if I'm wrong, but aren't they presenting building and shipping worldwide a LOT of electric vehicles with their solid state batteries??

 

[gonzo]

A carbon-uranium flywheel? Maybe.
But down to earth, I'm impressed by cheap electronics. Modules, Arduino, wonders. Just learning the elements will take a lot of time.
I need to learn a little more.

Flywheels, like other technology, has been perfected for racing. F1 is one typical application. Arduino is ancient by electronic standards; it dates to 2005. You don't need to learn a little more, you need to learn a huge lot more; including to stop making false claims about subject you have no knowledge of.

 

[gonzo]

Solid state batteries have some significant drawbacks. The self-discharge of approximately 5%/month is not adequate for any application that requires long periods without charging. Also, low temperature is an issue. Commercially available batteries are not useful below -4F (-20C). That is a mild winter day where I live.

 

[portacruise]

CF flywheels are a great improvement, and maybe can be run at higher RPM than metal ones. KE=1/2 mv^2 so speed is more important than mass? Also the weight of the protective flywheel scatter shield can be a lot less because the CF wheel shreds upon failure, rather than producing metal shrapnel? Have fun!

 

[gonzo]

CF is really good in tension so the mass can be concentrated further towards the rim. This makes the flywheel more efficient.

 

[portacruise]

Gonzo thanks for your comments!
"Commercially available batteries are not useful below -4F (-20C). That is a mild winter day where I live."
I think some EVs use grid power when charging plus drive battery e-heaters to keep the batteries warm, but of course that causes an even more severe limits on range and speed. Have fun!

 

[brian eiland]

The flywheel energy storage device in that Patriot vehicle was not meant to power the vehicle continuously in any manner,...but rather it was to absorb the energy of braking, then use that to help with acceleration/ boost out of the corner curve,....somewhat akin to the original flywheel bus idea,...where a commuter bus makes constant stop-and-go movements.

A vacuum-housed flywheel mounted on a gimbal captured and stored the energy, a precursor to the kinetic energy recovery systems (KERS) developed for Formula 1. It could spin at up to 58,000 rpm.

Regrettably the experiment did not proceed to a successful status,

https://www.hagerty.com/media/motorsports/the-patriot-was-a-high-tech-chrysler-ahead-of-its-time/

 

[montero]

Regrettably the experiment did not proceed to a successful status,

https://www.hagerty.com/media/motorsports/the-patriot-was-a-high-tech-chrysler-ahead-of-its-time/

A little bit of Hollywood . But I understand.

 

[brian eiland]

A little bit of Hollywood . But I understand.

What does Hollywood have to do with it????
These guys where very seriously looking at putting that race car project together !!

 

[montero]

What does Hollywood have to do with it????
These guys where very seriously looking at putting that race car project together !!

"It was a year later that the author of the story learned that video he had been shown of the Patriot driving around Donington featured Le Mans, Daytona, and Sebring-winning racer Andy Wallace holding a tow rope, being pulled by a truck. On downhill sections of the track, Wallace was told to let go of the rope, and pretend to steer the car at speed, which is when video and photos were taken."