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TdS Report #24: Team Profile: Sungo

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TdS Report #24: Team Profile: Sungo

True confessions. I first saw Sungo in 1993 at the Tour de Sol and thought
it was the neatest thing on 4 wheels then. It still makes me smile.

Nick Kosko from New Hampshire Technical Institute
told me the story of this year's version.
"It's four inches taller.
We redid the whole interior.
We have real seats this year, out of a 1988 Honda Civic.
We redid our center console; the switches are away from the steering wheel
and now at a very accessible place.
There is a new high-tech speedometer, and a new E-Meter.

"We stripped the entire car this year.
We added 4 inches to the frame,
redid our side-impact beams.
The shocks are now adjustable.
All the wiring is new and the wires to the motor controllers are much larger."

"But the main deal this year is the batteries.
We stepped up from 14 to 24 nickel metal hydride blocks,
which added 600 pounds."
The pack voltage is actually lower because they went to a pairwise-parallel wiring.
Two blocks are wired in parallel, with a fuse,
and then in series with the next pair, and so on.
They also replaced their old BADICHEQ battery management system with
Power-Cheqs. "It levels off the entire pack and it works. Very impressively.
We are usually within 0.01 Volt between every battery pair in this car."
The Power-Cheqs are remoted from the battery boxes to the passenger's
dashboard. That way they can see the indicator LEDs.
"The green means one is on and actually transferring energy.
The red light means the voltage is low or there is an open circuit.
If we blow a cell we will know right off because it will flash red."

They have redesigned their battery pack ventilation.
Air from the center column battery pack is sucked rearward, and
air from the battery pack over the rear wheels is sucked forward. Both
are then exhausted down to the underside at a very high rate.
"Since we have had this system the highest temperature we have seen during
charging was no more than 70 degrees F."

"Another thing that has helped our efficiency is replacing our head lights with
HID lights donated by Osram Sylvania and all LED lights in the rear.
We only draw 1.5 Amps with all our lights on. It used to be 10-12 Amps."

The body has been repainted. It is now a burnt orange color.

One cool thing about this car has not changed. It is still one of the very
few we have seen where each rear wheel has its own motor and motor controller.

Vehicle Name Sungo
Vehicle Number 72
vehicle type category Advanced battery
Team Name NHTI SEV Club
Organization New Hampshire Technical Institute SEV Club
City Concord
State NH
new this year? ret. team and updated
Vehicle Manufacturer Purpose Built
Vehicle Type Class Light Duty (car, truck, van)
Vehicle Type Division Prototype
motor kW continuous 21 kW
motor kW peak 128 kW
motor manufacturer Solectria
motor type AC Induction
Energy Storage Manufacturer Ovonics
Energy Storage System NiMH
Batteries pairwise-parallel
Battery Texaco Ovonic/NiMH
Battery 24 blocks
Battery 23160 Whrs/ 144 V
control system manufacturer Solectria
control system type Networked CD
regenerative braking? Regen
charger current 10 A
charger input voltage 230 V
charger on board? Off board
charger type High freq/ss
Plug Type 6-20P
PV cell type Monocrystalline
PV manufacturer Astropower
PV watts 100 W
Conversion Purpose-Built
body material Fiberglass body
frame material Aluminum frame
Length both L: 7 ft/ 9 in
Width both W: 4 ft/ 9 in
Height both H: 3 ft/ 7 in
# seats 2
Weight pounds 1600 lbs
Mfg GVW 1600 lbs
lbs of cargo 430
brake front type Front Disc
brake rear type Rear Drum
number of tires 4
tire manufacturer Continental
tire model P135/R15
tire type Radial
Range miles 180 miles
Program blurb NH-Sungo was built and has been continuously
improved by the New Hampshire Technical Institutes
Sustainable Energy Ventures Club. The two-seat,
purpose-built electric vehicle can reach 90 MPH,
and has placed first an the Tour several times.
This year additional space has been created for
its Ovonic nickel metal hydride batteries, to
gain added driving range.

The brochure that the Sungo team is handing out contains this sentence: "In
2003, the SEV (Sustainable Energy Ventures) Club will build an entirely new

- - - -
The complete set of Tour de Sol Reports for 2002 can be found at:
The complete set of past Tour de Sol Reports can be found at:
- - - -
The above is Copyright 2002 by Michael H. Bianchi.
Permission to copy is granted provided the entire article is presented
without modification and this notice remains attached.
For other arrangements, contact me at +1-973-822-2024 .
- - - -
For more on the NESEA Tour de Sol, see the web page at
- - - -
Official NESEA Tour de Sol information is available from the sponsor,
the Northeast Sustainable Energy Association (NESEA) at
413 774-6051 , and 50 Miles Street, Greenfield, MA 01301 , and
[email protected] . All media enquiries should be addressed to ...
Jack Groh
Groh Associates
[email protected] email
401 732-1551 telephone
401 732-0547 fax
401 952-0886 cell/pager
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