classic prius hv batt vs new prius hv batt

statultra · 11-22-2006, 10:46 PM

i was looking at information regarding the 04-07 prius hv battery and the 01 prius battery, are they basically made up of the same cells? , the new prius has 201.6 volt hv battery vs the 273.6 in the 01-03, are there any improvments on the battery technology itself?
it seems all toyota did was take out 10 modules from the 01 battery and used in the 04-06 ( 38 modules in 01-03,28 in 04-07 ) what about if they used the 01's battery, you would have much more range on EV i would think? but the voltage is higher.

I think im ranting

D0li0 · 11-23-2006, 12:01 AM

The batteries were improved in the 04+ Prius and further improved (cooling) in their SUVs. Basically the newer batteries are more powerfull (lower resistance) so can do more work. It seems that Toyota has also gained more confidence in the newer batteries because they are using more of the SOC (State Of Charge) range in the newer batteries than they did in the older ones. As such we get about the same ammount of useable energy from the new ones as we did from the old ones even though the older ones have more total capacity than the new ones. We get to use a larger percentage of the lower capacity in the new batteries.

Here: http://www.eaa-phev.org/wiki/Toyota_Prius_Battery_Specs is an overview of each generation of battery, and links to other resources. Please feel free to add any new links that I haven't run accross yet which you have found.

L8r
Ryan

tochatihu · 11-23-2006, 09:44 AM

The newer design has the cells' pos and neg electrodes repositioned (I forgot how) such that heat is generated much more evenly throughout the cell. This makes the thermal side of battery management easier, and allows more I/O cycles with less battery aging consequences. There is good graphics about the cell heating patterns somewhere on the web.

vincent1449p · 11-23-2006, 11:21 AM

DAS, there is no change in the electrodes position. The new design added another weld point to connect the cells in series.

http://www.nrel.gov/vehiclesandfuels/energ.../pdfs/38164.pdf

DanMan32 · 11-27-2006, 04:47 PM

The voltage at the motors though is higher in the new Prius than the classic. In the inverter is a high voltage DC-DC converter that converts the 201V to 500V.

11-22-2006, 10:46 PM	#1
statultra uber-Senior Member Join Date: Dec 2005 Location: cape coral, FL Posts: 575 My Car: 2005 Prius Package: #9 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	i was looking at information regarding the 04-07 prius hv battery and the 01 prius battery, are they basically made up of the same cells? , the new prius has 201.6 volt hv battery vs the 273.6 in the 01-03, are there any improvments on the battery technology itself? it seems all toyota did was take out 10 modules from the 01 battery and used in the 04-06 ( 38 modules in 01-03,28 in 04-07 ) what about if they used the 01's battery, you would have much more range on EV i would think? but the voltage is higher. I think im ranting __________________ 2005 Toyota Prius Hybrid Package 9 2001 Toyota Prius 2005 Honda Accord Hybrid 3.0 V6

11-23-2006, 12:01 AM	#2
D0li0 Senior Member Join Date: Oct 2005 Location: Seattle, Wa Posts: 118 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	The batteries were improved in the 04+ Prius and further improved (cooling) in their SUVs. Basically the newer batteries are more powerfull (lower resistance) so can do more work. It seems that Toyota has also gained more confidence in the newer batteries because they are using more of the SOC (State Of Charge) range in the newer batteries than they did in the older ones. As such we get about the same ammount of useable energy from the new ones as we did from the old ones even though the older ones have more total capacity than the new ones. We get to use a larger percentage of the lower capacity in the new batteries. Here: http://www.eaa-phev.org/wiki/Toyota_Prius_Battery_Specs is an overview of each generation of battery, and links to other resources. Please feel free to add any new links that I haven't run accross yet which you have found. L8r Ryan __________________ Question Combustion (in cars and power plants). First think Near-Term Solar (PV, Wind, Hydro) and secondly "local" nuclear, remember Solar IS Nuclear. Then again so are hydrocarbons, it's all about the timescale. * http://www.eaa-phev.org Plug-In Hybrid Electric Vehicles!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
12 volt batt adventure	statultra	Prius Technical Discussion	16	12-03-2007 06:03 AM
Where is the SMR & batt ECU in '06	pnerd	Prius Technical Discussion	1	07-12-2006 09:10 AM
How many amps available to the 12v batt?	crichman	Audio and Electronics	2	12-12-2005 04:05 PM
01 need help please will not start hv batt going	rrevma23	Care, Maintenance and Troubleshooting	8	10-10-2005 12:04 PM
Valence Tech Batt Helps Hybrid by Tripling Fuel Efficiency	Areometer	Prius and Hybrid News	11	07-22-2005 07:05 AM

11-23-2006, 09:44 AM	#3
tochatihu Senior Member Join Date: Apr 2004 Location: Kunming Yunnan China Posts: 1,823 My Car: 2001 Prius Package: Pioneer #1 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 7	The newer design has the cells' pos and neg electrodes repositioned (I forgot how) such that heat is generated much more evenly throughout the cell. This makes the thermal side of battery management easier, and allows more I/O cycles with less battery aging consequences. There is good graphics about the cell heating patterns somewhere on the web.

11-23-2006, 11:21 AM	#4
vincent1449p Senior Member Join Date: May 2004 Location: Singapore Posts: 196 My Car: 2003 Prius Package: Base Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	DAS, there is no change in the electrodes position. The new design added another weld point to connect the cells in series. http://www.nrel.gov/vehiclesandfuels/energ.../pdfs/38164.pdf

11-27-2006, 04:47 PM	#5
DanMan32 Join Date: Aug 2004 Location: Tampa Bay, FL Posts: 3,775 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	The voltage at the motors though is higher in the new Prius than the classic. In the inverter is a high voltage DC-DC converter that converts the 201V to 500V.