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Prius PHEV

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Revision as of 09:26, 18 March 2006 by Rjf (talk | contribs) (Fixed Maillist)
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There have already been a number of successfull Prius PHEV conversions such as Ron of CalCars PriusPlus and a similar EDrive consumer conversion, which is expected to become available in 2006. A second CalCars conversion will be undertaken in public at the Inaugural Maker Faire to help enhance this documentation and help promote PHEVs in the pacific northwest and midwest. A company called Hymotion will be offering conversion kits to fleets and eventually consumers.

See the Terms page is you aren't familure with some of the acronyms used throught the documentation. Also be aware of the Disclaimer should you be considering a conversion yourself.

At this time there are two common conversion methods for the Prius. The #CalCars Method used in Rons PriusPlus and EDrives conversions replace the stock battery with a new simple string. The second #Hybrid-Pack Method which is believed to be used by the Hymotion kits for the Prius and Escape might use a hybrid battery pack configuration which uses both a new simple string and the original stock batteries. Other upcomming conversion projects for older 2000-2003 Prius might use this method aswell. Both types of course use a Battery Chargers to refuel from the grid and it is unclear at this point how such conversions will affect your Warranty.

CalCars Method

The CalCars method:

New Prius PHEV Schematics and major additions comming soon...

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This method exploits the State Of Charge Drift portion of the vehicles battery management routines in order to accomplish State Of Charge Manipulation with the use of a Battery Tap Emulator. The result is the ability to effectively change the target SOC from the normal 3/4 to 1/4 which is more useful for PHEV applications. The Prius EV Mode is also utilized to further enhance the use of the additional electric energy provided by a larger Prius PHEV Battery Pack. A CAN device is required to acts as a Prius PHEV User Interface and management device, such hardware/software will need to follow logic similar to that laid out by Prius PHEV Pseudo Code. You can take a looks at Prius PHEV Photos which are available to help visualize the conversion process.

Hybrid-Pack Method

The Hybrid-Pack method:

Comming soon...