Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - DIY "Mild" Plug-in Prius Project: Grid-powering the 12v side w/ deep cycle batteries

orange4boy · 11-27-2009, 11:40 PM

One of the things I'd like to try is powering the 12V load on my Prius with a deep cycle battery pack like I do with the Golden Egg. This would take a load off the ICE without having to do a big, expensive PHEV conversion which can't be done on the NHW11 in any event. For instance, running the heater fan can cause the ICE to start when it would otherwise be off.

Bob, I saw in a post you made on Green Hybrid, your idea of a turbo alternator. So you were thinking along those lines, sort of, although you may have been thinking more along the lines of supplying the main pack.

Has anyone done a DC-DC 12V bypass or parallel with a battery pack? I would think there were some good FE gains to be had there. How is the 12V regulated and is this hack possible?

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orange4boy Master EcoModder Join Date: Aug 2008 Location: The Wet Coast, Kanuckistan. Posts: 1,275 The Golden Egg - '93 Toyota Previa DX 90 day: 31.91 mpg (US) Chewie - '03 Toyota Prius 90 day: 57 mpg (US) The Spaceship - '00 Honda Insight Thanks: 100 Thanked 306 Times in 178 Posts	DIY "Mild" Plug-in Prius Project: Grid-powering the 12v side w/ deep cycle batteries One of the things I'd like to try is powering the 12V load on my Prius with a deep cycle battery pack like I do with the Golden Egg. This would take a load off the ICE without having to do a big, expensive PHEV conversion which can't be done on the NHW11 in any event. For instance, running the heater fan can cause the ICE to start when it would otherwise be off. Bob, I saw in a post you made on Green Hybrid, your idea of a turbo alternator. So you were thinking along those lines, sort of, although you may have been thinking more along the lines of supplying the main pack. Has anyone done a DC-DC 12V bypass or parallel with a battery pack? I would think there were some good FE gains to be had there. How is the 12V regulated and is this hack possible? __________________ Vortex generators are old tech. My new and improved vortex alternators are unstoppable. "It’s easy to explain how rockets work but explaining the aerodynamics of a wing takes a rocket scientist.