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Resistance welding method and resistance welding device for lead acid battery

  • US 5,140,126 A
  • Filed: 09/06/1990
  • Issued: 08/18/1992
  • Est. Priority Date: 03/10/1988
  • Status: Expired due to Fees
First Claim
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1. A resistance welding device comprising:

  • a pair of resistance welding guns (4), (4) for pressing together two mutually facing surfaces of two members (e), (e) to be welded together and for applying an electric current to the members pressed together;

    a resistance measuring device (11) for measuring an electric resistance value between the two members (e), (e) to be welded together while they are in pressure contact;

    a constant power controller (13); and

    means for providing a signal indicative of the measured resistance value to the constant power controller so that a controlled current set by the constant power controller (13) is applied through the resistance welding guns (4), (4) to both of the two members (e), (e) to be welded.

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