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Dual voltage battery system and electronic switch therefor

  • US 4,114,082 A
  • Filed: 07/05/1977
  • Issued: 09/12/1978
  • Est. Priority Date: 07/05/1977
  • Status: Expired due to Term
First Claim
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1. A dual voltage battery system, comprising:

  • (a) first and second batteries of equal voltage rating,(b) first rectifier means interconnecting the positive terminals of the batteries,(c) second rectifier means interconnecting the negative terminals of the batteries,(d) first electrically actuated switch means releasably interconnecting one terminal of the first battery and the opposite polarity terminal of the second battery for connecting the batteries together in series,(e) first switch actuator means having an electric circuit connected to the first battery and operable by an impulse generated from an instantaneous voltage drop across said battery by connection of a load thereacross to activate the first switch means to connect the batteries together in series,(f) one of the rectifier means being arranged to block the higher voltage output of the second battery of the series from the first battery, and the other rectifier means being arranged to isolate the positive and negative terminals of the first battery from each other, and(g) electrical conductors connected across the first switch means and arranged for connection to the positive and negative output terminals of a source of battery charging voltage rated for charging one of said batteries.

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