Forced flow electrochemical battery

  • US 4,081,585 A
  • Filed: 03/21/1977
  • Issued: 03/28/1978
  • Est. Priority Date: 03/22/1976
  • Status: Expired due to Term
First Claim
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1. In an electrochemical battery comprising a plurality of cells, each cell comprising from the inside towards the outside in particular:

  • a negative collector grid, a porous separator, a porous active catalytic layer, a positive collector grid, and a porous water repellant layer, said battery further comprising means for feeding said cells in series with an electrolytic solution comprising an active material in suspension and in particular zinc powder, said feeding means comprising means for conveying said solution inside said cells, said cells being grouped into m modules, each capable of delivering a potential difference U and being connected electrically in series with said modules, means for connecting said modules electrically in series and means for feeding said modules with said solution in parallel, said module feeding means comprising a pump and for each module an input and output pipe for conveying solution from a storage tank towards each of said modules through said input pipe and being returned to said tank after having passed through said module through said output pipe, the improvement comprising p designating the rank of a module, said input pipe as well as said output pipe, each comprising at least one electrolytic resistor, said electrolytic resistors being respectively, the input resistor and the output resistor for each module in which said solution flows, and means for connecting said resistors such that said input resistor causes the potential of the solution to vary from the value of the potential in said tank to the value of the potential at the input of said module, and said output resistor causes the value of said potential of the solution to vary from the value of the potential at the output of said module to the value of the potential in said tank.

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