Prius I battery SoC 60 % normal?
#1
I bought the Graham Miniscanner for my 2000 Prius. One thing I've learnt is that the battery SoC stays around 60 %. The range is from 45 % to 63 %. Is this right? Or is my battery severly degraded?
#3
Hi Jason:
___SoC is State of Charge. It is a guesstimate of how full your pack is. <-- Better explanation.
___Johanerlandsson, Ni-MH’s in Hybrid’s were designed for a maximum 80% and minimum 20% for longevity reasons. Where your Prius keeps the pack sounds just about right from the pack tests I have seen. Do a Google search for NREL or Argonne labs and Prius. You will run into quite a few interesting tests on the Prius I that can only help you understand what the SW is trying to do behind the scenes. IIRC, ~ 50 – 56% was where the Prius SW liked to keep the SoC in your Hybrid. If I find some more time, I will find the links as I have a ton of them … For reference purposes only as you can well imagine
___Good Luck
___Wayne R. Gerdes
___Hunt Club Farms Landscaping Ltd.
___Waynegerdes@earthlink.net
___SoC is State of Charge. It is a guesstimate of how full your pack is. <-- Better explanation.
___Johanerlandsson, Ni-MH’s in Hybrid’s were designed for a maximum 80% and minimum 20% for longevity reasons. Where your Prius keeps the pack sounds just about right from the pack tests I have seen. Do a Google search for NREL or Argonne labs and Prius. You will run into quite a few interesting tests on the Prius I that can only help you understand what the SW is trying to do behind the scenes. IIRC, ~ 50 – 56% was where the Prius SW liked to keep the SoC in your Hybrid. If I find some more time, I will find the links as I have a ton of them … For reference purposes only as you can well imagine
___Good Luck
___Wayne R. Gerdes
___Hunt Club Farms Landscaping Ltd.
___Waynegerdes@earthlink.net
#5
Hi Johanerlandsson:
___Here are two that should help answer as well as help you understand your Prius I’s battery management better … In all actuality, I believe the Prius I might be a better highway mileage champ then the Prius II due to its smaller frontal area and lighter weight. Cd not withstanding … Using your Graham scanner, look up Rick Reese’s comments on high fuel economy at varying load percentages and experiment from there.
http://www.ctts.nrel.gov/analysis/pdfs/sum...ation_sep01.pdf
http://www.eere.energy.gov/cleancities/pro.../vwbs2.cgi?6029
___Personally, I would love to give a Prius I a test commute or two to see what she is really worth with a Graham scanner’s Load Percentage guiding my way
___Good Luck
___Wayne R. Gerdes
___Hunt Club Farms Landscaping Ltd.
___Waynegerdes@earthlink.net
___Here are two that should help answer as well as help you understand your Prius I’s battery management better … In all actuality, I believe the Prius I might be a better highway mileage champ then the Prius II due to its smaller frontal area and lighter weight. Cd not withstanding … Using your Graham scanner, look up Rick Reese’s comments on high fuel economy at varying load percentages and experiment from there.
http://www.ctts.nrel.gov/analysis/pdfs/sum...ation_sep01.pdf
http://www.eere.energy.gov/cleancities/pro.../vwbs2.cgi?6029
Specially designed charge and discharge chassis dynamometer test cycles revealed that the Insight limited battery usage to 60% of rated capacity, while the Prius limited battery usage to 40% of the rated capacity. The Prius uses substantially more pack energy over a given driving cycle but at the same time maintains the pack within a tight target state of charge (SOC) of 54% to 56%.
___Good Luck
___Wayne R. Gerdes
___Hunt Club Farms Landscaping Ltd.
___Waynegerdes@earthlink.net
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