Technical - charging the battery while driving

Discussion in 'Clarity' started by prestoOne, Mar 27, 2018.

  1. prestoOne

    prestoOne Member

    Hello, for those swimming in the technical details and diagrams please go wild on this.

    The Clarity gas engine charges the battery and the battery drives the electric motor to drive the wheels.
    Where/when does the A/C to D/C conversion take place?
    Where in the car is there A/C current and where D/C for this system?
     
  2. Kendalf

    Kendalf Active Member

    This video/post has a good explanation of the two-motor Honda hybrid system used in the Accord Hybrid (which the Clarity adopted):
    https://www.greencarreports.com/news/1108160_explaining-how-honda-accord-hybrid-system-works-video

    Essentially, there are two electric motors; one that drives the wheels and another acting as a generator to recharge the battery. So the A/C to D/C conversions take place in those electric motors.

    And this post by ab13 has links to a Honda presentation and whitepaper giving you as much detail as you would want on the drive system:
    https://insideevsforum.com/community/index.php?threads/honda-clarity-power-split.418/#post-3740
     
    prestoOne likes this.
  3. prestoOne

    prestoOne Member

    Those were amazing links.

    So from what I see in the diagrams (page 9 and 10):
    file:///C:/Users/senior/Downloads/EVS27-3A-5430337.pdf

    The A/C to DC conversion happens under the hood and DC travels under the passenger floor to a DC to DC converter by the battery.
    Did I get that right?
     
  4. Domenick

    Domenick Administrator Staff Member

    So, energy comes out of the battery as direct current. It flows to the controller/inverter, which changes it to AC and controls how much current to feed to the AC electric motor.

    The DC to DC converter generally just takes energy from the main battery, which is high voltage, and feeds it to the 12 volt battery which powers lights and a few other things.
     

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