Rav4EV Data

Rav4EV links
SCE Accelerated Reliability Testing Final Report (DOE)
SCE 100k Mile Evaluation
"Gas mileage" of the Rav4EV (official EPA rating)
CARB RAV4EV at a glance
Rav4EV "available now"
Rav4EV email list
Patty's Page
Darell's Letter to Patrick Bedard
Mark Whitehead 100k mile battery data

Rav energy (battery pack) data (this page)

My range record (and I don't try for max range very often!) per charge was accomplished 08.21.05. I drove 133 miles on 100% SOC. Two people in the car, plus the portable charger in back. Twisty, hilly drive with many stops at the beginning and end. Heavy AC use for one full leg of the two-way trip. Final score: 191 Wh/mile consumed = 5.2 miles per KWh = range of 133 miles = 25.9kWh pack. (To calculate pack capacity: multiply kWh consumed by 100, and divide that by percentage of SOC consumed. The longer the trip the more accurate this will be).

Energy Data:

• Pack capacity: ~26 kWh - the amount of energy in about 0.8 gallons of gasoline.
• AC power consumption to fill 26kWh pack: 30kWh typical  (approximate 10% charge loss, and can be ~5kWh more if leveling)
• Average Consumption from pack: 250 Wh/mile
• Average Consumption from outlet: 275 Wh/mile (approximate 10% charge loss)
• Charges from 240V at about 5.6 kW (18% SOC/hr).
• Charges from 208V at about 5.2 kW (16% SOC/hr).
• Charges at 15A, 4.9 kW into the batteries (from 208V 3-phase commercial power).  About 15% SOC per hour
• 1 kWh = 3412 BTU
• 1 gallon of gasoline ~34 kW
• 1 US gallon of gasoline = typically 115,000BTUs (source: http://www.chevron.com) which is 33.7 kWh

From http://www.fueleconomy.gov (EPA):
2001 RAV4EV 290(city)-370(highway) Wh/mi and 104mpg combined equiv. (source: EPA)
2002 RAV4EV 270(city)-340(highway) Wh/mi. and 112mpg (equiv.)

Rav4EV RPM:
Final drive ratio 9.455 to 1
P195/80R16 Tires are rated at 733 revs per mile
Motor speed @ 60 mph = 733 * 9.455 = 6,931 rpm
Motor speed @ 1 mph = 6,931/60 = 115 rpm
Motor speed @ 80 mph = 9,241rpm
Motor speed @ 100 mph = 11,511 rpm (if the governor would let you get there!)

Contrast this to the EV1:
Final drive ratio 10.946 to 1
175/65R14 tires rated at 878 revs per mile
Motor speed @60 mph = 878 * 10.946 = 9611 rpm
Motor speed @ 1 mph = 9611/60 = 160 rpm
Motor speed @ 80 mph = 12,800 rpm
Motor speed @ 100 mph = 16,000 rpm

Rav4EV batteries:

Panasonic NiMH battery for RAV4 EV traction pack:
2002 Part number: G9280-42012 (random price assigned as $4700 in 2008)
Type EV-95
See the data sheet here!
Nominal Voltage 12V
Nominal Capacity 95Ah
Specific Energy 63Wh/kg
Specific Power(D,O,D=80%) 200W/kg
Dimensions (mm) 116(W) X 175(H) X 388(L)
Weight 18.7kg = 41.2 lbs
RAV4EV 288v pack (24*12v*95ah = 27.3kWh)
GM EV1 343v pack (26*13.1v*77ah = 26.4 kWh) - this is the NiMH pack. The PbA is 18.7 kWh, 60Ah, 312V

The Rav battery tray sorts the batteries thusly. The small s denotes a temp sensor.


		Right Side
	6	7
	5s	24	8
	4	23	9
	3	22	10
Front	2	21	11	Rear
	1	20s	12s
	19	18	Service Prug
	16	17	13
	15	14
		Left Side

Modules 8 to 13 will always be your best modules in the pack. Modules 5,4,3,2,1, 19 or 16 will usually be your problem modules with 2 being the most likely to fail. Of course any module or cell can fail but these have been consistently the first to limit the packs capability.

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Rav AUX battery: (See Aux battery page)
Panasonic 50D20L-MF (appears to be a JIS standard 50 Amp-hour (20 hour discharge rate)) Maintenance Free battery.

• Measurements of my replacement Trustart Aux battery (replaced 11-May- 2005, measurements taken 12-Jan-2008):
  • During charging of the pack: 13.9 V
  • Half an hour after charging, off and with no added load: 12.8 V
  • Half an hour after charging, and then activating the charge timer: 12.7 V
  • After sitting several hours, off and with no load: 12.6 V
  • After sitting several hours and then activating the charge timer: 12.5 V
  • Half hour after charging, off and with no added load: 34 mA
  • Half hour after charging and with charge timer activated: 750 (a 700+ mA draw from the charge timer)
  • Note: having the Rav4INF interface plugged in (even with no Palm device at the other end of the cable) there is an additional 50 mA draw on the Aux).
  • Door open (no dome light on) draws 155 mA
  • -- New Optima Aux battery shows 13.1 V three hours after charging.

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• Cutaway images below © Kevin Hulsey Illustration Inc. (posted with permission).

  

  

  

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  Contact the head guy of Toyota Motor Corp in the US:

  Yukitoshi Funo-sama
  U.S. Corporate President
  Toyota Motor Corporation
  P.O. Box 2991
  Torrance, CA 90509

  yuki_funo@toyota.com

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