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Photovoltaic battery charge controller

  • US 4,626,764 A
  • Filed: 09/02/1983
  • Issued: 12/02/1986
  • Est. Priority Date: 09/02/1983
  • Status: Expired due to Fees
First Claim
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1. A photo voltaic panel (PVP) battery charging device, comprising:

  • a PVP having positive and negative terminals;

    a relay coil coupled across said positive and negative terminals of said PVP;

    a variable resistor coupled across said positive and negative terminals of said PVP in series with said relay coil;

    a positive and a negative battery connecting terminals, said positive battery terminal being coupled to said positive PVP terminal, and said negative battery terminal being coupled to said negative PVP terminal;

    a normally closed relay switch operated upon by said relay coil and coupled between said positive PVP terminal and said positive battery terminal; and

    a forward biased diode coupled between said positive PVP terminal and said positive battery terminal in series with said relay switch between said relay switch and said positive battery terminal.

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