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Electricity storage controller for vehicles

  • US 7,409,276 B2
  • Filed: 03/31/2003
  • Issued: 08/05/2008
  • Est. Priority Date: 06/21/2002
  • Status: Expired due to Term
First Claim
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1. An electricity storage controller for a vehicle comprising:

  • a rotary electric machine serving as a prime mover of the vehicle;

    an electricity storage device serving as a main power source of the rotary electric machine and including a power storage module which contains plural storage cells that are connected in series;

    means for determining assigned voltages of the storage cells;

    means for calculating an average value of the assigned voltages; and

    means for equalizing the assigned voltages the storage cells based on the average value, the means for equalizing including;

    a plurality of bypass circuits, which are normally open, and which are connected in parallel with respective ones of the storage cells;

    means for setting a bypass reference voltage based on the average value of the assigned voltages of the storage cells; and

    means for closing the bypass circuits of the storage cells if their assigned voltage exceeds the bypass reference voltage.

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