Current Events...
BYD claims to have a charger system
that will charge its battery in 5 minutes.
1000 KiloWatts...
That's twice the power of a Clear Channel AM Radio Transmitter...
Think about this.
Ever have a 1000 watt heater cord
heat up your electrical outlet ?
It happens.
In 2021, an estimated 24,200 residential building electrical fires were reported to United States fire departments. These fires caused an estimated 295 deaths, 900 injuries and over $1.2 billion in property loss.
Power Cords heat up exponentially
with a rise in current.
This is due to I squared R Power Loss.
The current heats the wire, and Power is
radiated as heat, like an electric stove.
Cables for house wiring are usually
rated for 12 to 15 Amps.
A 1000 KW charger would draw 1000 amps
at 1000 volts.
Cable resistance is in the milliohms,
so, if you had 1000 amps flowing
through a 30 milliohms cable,
the cable would radiate:
1000 X 1000 X 0.030 = 30, 000 Watts.
Say you had a 10 milliohms cable...
1000 X 1000 X 0.010 = 10, 000 Watts.
Suppose you had some kind of super
thick cable, with only 1 milliohm:
1000 X 1000 X 0.001 = 1, 000 Watts.
That's 1000 Watts of HEAT
radiating from your wiring...
Most of the resistance in a cable connection, is what is called
Connector Insertion Loss.
So, in other words, the socket heats up.
The socket in your electric car heats up, too.
Volex makes EV Charger Sockets. (click)
Their biggest is a 32 Amp Socket.
Volex makes good sockets, rated for
>10,000 Insertion cycles...
Insertion Cycles ?
Sockets and plugs bend and wear
each time the connector is inserted.
10,000 cycles sounds good...
Until you think of a charging station
that services 100 cars per day...
100 cars X 100 days is 10,000 cycles.
Worn out in 3 months.
Now your Car socket is ok, being used
daily for 10,000 days...
That's 30 years.
But the FILLER socket plug
at the Charger Station is six months old ...
When you insert it, it makes a poor
connection with your car...
1000 amps running into a poor connection
causes excessive heating of your car
charger circuit, which is also connected
to your heat-sensitive Lithium Batteries.
Your socket catches fire, maybe your
batteries too...
Lithium Batteries burn at 5000+ degrees F.
Bye-Bye Car.
Bye-Bye Apartment Charger.
Bye-Bye Apartment building.
Bye-Bye Insurance Companies
as they flee your EV state.
Got it ?
Now BYD claims that it achieved
the 1000 Kilowatt rate, by using
two charging cables...
Two cables, twice the insertions...
Suppose it's only really supplying
500 Amps per cable...
That's still 500x500x0.030, = 7,500 Watts.
How hot does it get in the summer?
You've been driving your car, on hot
asphalt highways, running your air conditioner...
Your Batteries are already hot.
Now you dump 500 Amps into
each battery bank...
With 3,250 Watts of heat (or MORE...)
forming at the socket joint...
Your batteries could explode.
Remember, as you drive a car, the car
is constantly bumped and rattled by
the road conditions.
Little squeaks start appearing after
a year or two ...
The electrical cable connections inside
your car are being bounced and flexed.
Ever bend a copper wire 1000 times ?
It tends to break, doesn't it...?
Even if it doesn't break, the structure of
the metal is under stress...
Especially at the connectors ...
Loose connectors heat up ..
You try to put 500 Amps through them...
Bang, Zoom.
[Chuck's 00Cedar JPICedar ]
[ This page built with JPICedar by Chuck Darling Tuesday March-18-2025 Time : 3:30pm]