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Vehicle heating and cooling system

  • US 4,280,330 A
  • Filed: 07/23/1979
  • Issued: 07/28/1981
  • Est. Priority Date: 09/19/1977
  • Status: Expired due to Term
First Claim
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1. A vehicle heating and cooling system for use with an automotive vehicle having a first battery and an alternator for charging the battery, comprising:

  • a thermo-electric heat pump;

    a second battery electrically connected to said heat pump for operating said heat pump;

    switch means for controlling the flow of current to said heat pump from said second battery, said switch means controlling the mode of operation of said heat pump so that said system acts in a first mode of heating the compartment of an automotive vehicle and in a second mode of cooling the compartment;

    means for controlling the temperature of the air in said compartment, said means for controlling the temperature comprising a first thermostat operative when said system is in said first mode of operation, and a second thermostat electrically parallel with said first thermostat and operative when said system is in said second mode of operation;

    a fan for distributing the air in said compartment, said fan being connected in parallel with said second battery for operation thereby;

    first means for connecting the positive terminal of said second battery to the positive terminal of said first battery of said automotive vehicle, said first means for connecting comprising a first switch which is in the normally open position when the engine of the automotive vehicle is not running, and in a closed position when the engine of the automotive vehicle is running, so that said second battery may be periodically charged by the alternator of the automotive vehicle; and

    second means for connecting the positive terminal of said second battery to the positive terminal of said first battery, said second connecting means comprising a second switch, said second switch being normally open, and a relay connected in parallel with said second battery for closing said second switch when activated, whereby said second battery may be used in order to start the engine of the automotive vehicle when the first battery is low or inoperative.

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