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Battery pack

  • US 20050031945A1
  • Filed: 08/03/2004
  • Published: 02/10/2005
  • Est. Priority Date: 08/05/2003
  • Status: Active Grant
First Claim
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1. A battery pack comprising a battery block which is a plurality of batteries oriented perpendicular to a specified surface of a case and arranged vertically and horizontally in mutual proximity, the case which houses the battery block, and a circuit board which is connected with the batteries;

  • wherein the battery block has a plurality of batteries lined up in a horizontal row with the same orientation, lead plates are connected to the terminals of batteries lined up with the same orientation to connect them in parallel and form parallel units, and a plurality of parallel units are stacked vertically to make battery orientation different in the vertical direction;

    the lead plates, which connect a plurality of batteries of a parallel unit in parallel, also connect terminals of batteries of parallel units that are adjacent in the vertical direction to connect a plurality of parallel units in series in the vertical direction;

    the lead plates have projections which protrude horizontally from the confines of the battery block, and the projections connect with the circuit board;

    the circuit board is disposed opposite a side of the battery block in an orientation that allows connection with the projections of a plurality of lead plates; and

    lead plate projections connect with the circuit board to join the battery block and circuit board as a single unit.

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