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Leaving Headlights On and EV Range?

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by bilofsky, Jun 11, 2013.

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  1. El Dobro

    El Dobro A Member

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    In NJ, it's headlights on with the wipers because they're considered "lighted lamps" by the law. As for the power draw I've never noticed much difference to care when driving in EV mode.
     
    #21 El Dobro, Jun 15, 2013
  2. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Power Resource IB is the amp from the inverter. It routes power from the PHV battery and the generator to the motor. I believe the DC-to-DC converter changes the PHV battery voltage to 12v, it should account for the 12v system.

    We can do a virtual PID that subtracts Power Resource IB from Batt Pack Current Val. The difference would be the amp that the dc-to-dc converter draws. This will only be accurate only when the generator is not active (no regen or ICE making power).

    PID:
    Name: 12V Bus Amp
    Equation: VAL{Batt Pack Current Val} - VAL{Power Resource IB}
    Unit: kW
     
    #22 usbseawolf2000, Jun 15, 2013
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  3. bilofsky

    bilofsky Privolting Member

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    With the car on, fully charged and parked, that value stays at 0.0 most of the time. If I turn the headlights or brights on or off, it will momentarily jump to 0.1 or 0.3 or 1.0 (or -0.5 a couple of times) and then go back to 0.

    Is that anything other than the lag between two otherwise identical measurements?

    (And should the unit be Amps?)
     
    #23 bilofsky, Jun 16, 2013
  4. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Yes, would be Amp.

    Have you tried adding more load on 12V? Turn on the music with a good bass.

    Edit: Hmm, perhaps they both display the same value.
     
    #24 usbseawolf2000, Jun 16, 2013
  5. bfd

    bfd Plug-In Perpetuator

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    Hmmm. It never rains in California.
     
    #25 bfd, Jun 17, 2013
  6. bilofsky

    bilofsky Privolting Member

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    And the answers ...

    Using a clamp-on ammeter on the positive lead of the 12v battery of my PIP Advanced with the car turned off, I measured:

    ​
    Headlamps 81 w.
    Brights 215 w.
    Side markers, etc. 29 w.

    Edit: These are the total power from the battery for the headlight switch positions shown. So "Headlamps" means all power drawn when the switch is in the headlights on position.
     
    #26 bilofsky, Jul 5, 2013
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  7. bisco

    bisco cookie crumbler

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    so, 100w would use about 1/30 of a fully charged battery in an hour? for me about 1/2 mile. since i can only drive on ev for about 1/2 hour, it would be 1/4 mile.
     
    #27 bisco, Jul 5, 2013
  8. PiPLosAngeles

    PiPLosAngeles Senior Member

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    Probably less than the carbon that would be generated by the emergency vehicles driven to the scene of an accident that would have been avoided, and what would be generated repairing/replacing two or more damaged cars.
     
    #28 PiPLosAngeles, Jul 6, 2013
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