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Modular, multicell lead-acid batteries

  • US 5,256,502 A
  • Filed: 09/17/1991
  • Issued: 10/26/1993
  • Est. Priority Date: 09/17/1991
  • Status: Expired due to Fees
First Claim
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1. A modular multicell lead-acid battery comprising a first assembly of frames, a second assembly of frames, partition means interposed between said first and second assemblies of frames for electrochemically isolating said first and second assemblies from one another so that said battery comprises a first and second multicell battery, each of said first and second assemblies of frames comprising a plurality of terminal and floating frames secured together in side-by-side relation, each frame of each assembly having space division elements defining within the perimeter of the frame a plurality of active material support areas arranged side-by-side across the width of the frame, the perimeter and division elements of the frames in the respective assemblies being secured together in sealed relation so that the perimeters form outer walls of the battery and the division elements form partitions between adjacent cells of the battery, the frame having the perimeter and division elements thereof secured in sealed relation to respective opposite sides of the partition means, an electrically conductive grid embedded in, and supported by, the frame to provide support for active material, said grid having a frame positive and negative tab extending through the perimeter of the frame, active material located in said support areas so that each support area forms a plate of the battery, said active material being selected so that adjacent areas in the same frame form plates of opposite polarity and corresponding support areas in adjacent frames of the same assembly form plates of opposite polarity, an electrolyte separator positioned between the active material of opposite polarity in said corresponding areas in adjacent frames, a positive busbar having a series of slots and said frame positive tabs protruding through said slots and electrically connected thereto, a negative busbar having a series of slots and accepting the frame negative tabs and electrically connected thereto, each of said positive and negative busbars having at least one terminal formed thereon, electrolyte fill holes allowing access for electrolyte to each cell of the battery, electrolyte contained in each cell, a cover overlying the top perimeter of the battery and being sealed to said frames, said terminals extending through said cover, and switch means electrically connected to one of said busbars for allowing current to be drawn from at least one of the first and second multicell batteries.

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