OwnerSean Scherer
Owner's Other EVs2005 Toyota Prius
1993 Soleq Evcort
LocationPhoenix, Arizona United States map
Email email image
Vehicle1997 Toyota Corolla
Lavender 1997 Toyota Corolla, fully electric powered AC induction
system w/ Lithium Ion Battery pack.
MotorSiemens 1PV5133WS18 3-Phase AC
30kw rated AC induction motor
DrivetrainOriginal ICE pulled, transmission remains but is clutchless
ControllerSiemens 6SV Simovert
100kw rated Simovert controller
Batteries27 Valence U1-12XP, 12.80 Volt, Lithium-Polymer
Battery pack upgraded 6/1/2011!
New pack is about 14kwh capacity, voltage is ~374V @ full charge!

U-BMS by Valence to balance, manage and monitor all batteries
(reports SOC via stock fuel
System Voltage346 Volts
ChargerManzanita Micro PFC20-WC
Water-Cooled w/ Propylene Glycol solution and radiator. 20A
maximum charge current at 240V. Can run from 110V up to 240V.
HeaterLive in Phoenix, this isn't a necessity here
DC/DC ConverterSiemens Simovert 6SV
Done by the controller
InstrumentationU-BMS reports SOC to stock fuel gauge, Texas Instruments 486
laptop for inverter/
controller data (temp/current/voltage/etc)
Top Speed100 MPH (160 KPH)
Probably would go faster than 100 mph, has plenty of power and
can reach 100 mph at only about 3500 RPM in 5th gear (motor will
go over 9000 RPM). Doing this would drain batteries fast and
current controls would have to be increased
Acceleration0-50 mph in 2nd gear, takes about 8-10 seconds.
Range50 Miles (80 Kilometers)
After a 42 miles round trip the battery pack showed 360V (w/
346V being nominal), this was
driving ~55mph on the highway for 90% of the trip, that is ~%50
SOC, so you could
theoretically go ~85 miles for a 100% DOD, but that is not a great
idea so 50-70 miles is
range depending on driver/conditions...
Watt Hours/Mile150 Wh/Mile
Depends on speed, cruising at 55mph I am drawing 20-25A, this is
"ideal" situation (besides
cruising at 30mph, but when does that happen?).
EV Miles
Start:120,000 Miles (193,080 Kilometers)
Current:135,600 Miles (218,180 Kilometers)
Total:15,600 Miles (25,100 Kilometers)
    As of 7/28/2011
Seating Capacity5 Adults
Curb Weight2,500 Pounds (1,136 Kilograms)
TiresBridgestone Low-rolling resistance tires
Conversion TimeAlways improving it, its been electric for about 8 years!
Conversion Cost$7K for motor/controller
$2K for charger
$24K for batteries/BMS
$2K for A/C system, brake pump, motor cooling system, charger
cooling system, tranny
adapter, etc.
$1K for misc. parts
Total cost: $36K (pretty on par with the cost of the Nissan Leaf!)
Additional FeaturesThe interior of this car has an entirely "stock" feel with only a
very small toggle switch
(for selecting reverse or forward on controller) being "EV". The
car features regenerative
braking and a fully programmable controller and charger. The
batteries are each hooked
up to their own data chips which monitor the voltage and
temperature of each battery
independently and report this data to a mainboard which
outputs through a serial port
to a laptop, this system works really well to monitor charging
state and battery
temperatures. Custom built battery racks made of T6
aluminum. Water cooled
controller and motor w/ radiator. Also has original Air
Conditioning compressor and A/C
system hooked up to a 1.5 HP 3 phase AC motor (so Air
Conditioning is as good as
stock). SRS airbags and inertia-switch for the contactor switch
on the controller so the
car has safety built into it.
Fantastic example of what an EV could and should be like...
Stock feel interior, cargo space is all still there, spare tire still
there, stock gauges given pertinent information (BMS warnings
show as low fuel light, SOC on fuel gauge, speedometer,
plans for RPM to become Ammeter and temp on motor)

This is also a very expensive conversion example @ $36K.

I am considering selling it so I can build another, email me
offers (won't consider it if it is under $15K);

code by jerry