Monday, March 5, 2012

kewet tube chassic


KEWET electric car galvanized pipes chassic is developed, and the first cars (do not know for how many), is made at FKN teknik in Hadsund

FKN teknik was in the final phase and completion of another technological adventure Hadsund namely Novo Diagnostic Systems A / S. (NDS)

Flemming K Nielsen worked on NDS on mechanical workshop. NDS forstrede Numerous ihværksættere in Hadsund, and Flemming K Nielsen started already FKN teknik in the past year while he was employed by NDS.

The closure of the NDS came after Novo gave the company due to some technical errors in judgment ( memolog, BMC Lab 23 ) and sold to the original godfather, Børge Simonsen. He had in the 70s started Meditronic and had mid / end 80s several biomedical companies in town. The new cabinet itself was called Scan Detectronic Diagnostic (SDD). SDD went bankrupt about a year after overtaglesen. Flemming K Nielsen started here around this time up full time with his own business.

NDS made brain scanners, spect, cerebrografh, bone mineral scanners, and other medical technology that required precision taverns mechanics.  FKN teknik worked for several of the new entrepreneurship that originated from the closure of NDS and later SDD (SDD invented the Simonsen Cerebrograph Cortexplorer) . (Some  newe companies came from the closure of NDS: Twister Engineering at Bob Offenstein, Cortex Technology By Flemming Kristensen, Hadsund Maskinteknik by Eric Sand, etc.)

Pipes for KEWET EV chassic was bent at the then called REVA Kærvang (rehabilitation center) Hadsund. Today the place is called Project Center Hadsund or special unit Hobro municipality.

Buddy norway had also made a chassis in denmark, they should be made ​​at the company Metafix in Hadsund

movie about electric vehicles history

EV cars history, in danish  electric cars, about kewet'en, ellerten, hope whisper and more

How do you charge properly on Li Ion baytterier



When i play a little with some LiPo batteries for a remote controlled car, or similar, it's cheap, and don't mater if i destroy a LiPo battery, they don't cost a lot. But it is quite another thing when the battery pack will cost more tah $5000 as to the KEWET  2 runs at 48 volt.

So now it is about time to learn more about the Li Ion technology, to know more so i can make a test setup with an Arduino to monitor LiFePo battery pack.

I will use some Li Ion cells from a faulty laptop, and cram it into a small LEGO electric car or my DIY electric bicycle LiIon powered.

Basic knowledge on Li Ion batteries:
http://www.electronics-lab.com/articles/Li_Ion_reconstruct/

LiFePo Batteries for KEWET - LiFePo4


Update October 24, 2011: I Have just received a fresh complete offers on LiFeYpo4 from Poland http://kewet.blogspot.com/2011/10/lifeypo4-tilbud-fra-polen.html

Li Y Fe Po4 batteries are commonly used at present. projects for electric cars, and the good old Ellert use this type of Li Ion battery.

They are far more durable a Li Ion, and have much more power than lead / acid batteries, and weighs a lot less. There are many advantages.


Quote from Danish electric car committee:

'At the same time Li-Ion battery is much more durable. Where lead-battery often gives up after just 300 charges (15000 miles) has a Li-Ion battery lifetimes of up to 3000 recharges (almost one million kilometers) '

http://kewet.de/akku/akkus-im-kewet/index.htm

Have found some on ebay too:


Wiki About LiFePo4 battery
More about Li-Ion: http://en.wikipedia.org/wiki/Lithium-ion_battery

Learn about Li Ion batteries in 5 minutes: http://www.inspired-energy.com/standard_products/Smart% 20Battery% 20User% 20Notes.pdf

http://blogs.saschina.org/chemicalparadigms/2011/03/10/rechargeable-batteries/