Battery charger with timing means, current regulation, indicating means, polarity control and battery terminal voltage adaption

• US 3,217,225 A
• Filed: 08/30/1960
• Issued: 11/09/1965
• Est. Priority Date: 08/30/1960
• Status: Expired due to Term

• Current Assignee: Exide Electronics Corporation (Exide Electronics Group, Inc.)
• Original Assignee: Donald C. Gottlieb, Frederick C. Duncanson
• Inventors: Gottlieb, Donald C., Duncanson, Frederick C.
• Application Number:
  US04/052,945
• Time in Patent Office: 1,897 Days
• US Class Current: 320/159
• CPC Class Codes: H02J 7/00714 in response to battery charging or discharging current
• CPC Class Codes: H02J 7/12 using magnetic devices having controllable degree of saturation, i.e. transductors
• CPC Class Codes: Y10S 320/15 Polarity control
• CPC Class Codes: Y10S 320/19 Charger status, e.g. voltmeter
• CPC Class Codes: Y10S 320/28 Regulating transformer, e.g. high leakage, ferro-resonant

Claims

1. A BATTERY CHARGER ADAPTED FOR CHARGING BATTERIES HAVING A FIRST TERMINAL VOLTAGE AND FOR CHARGING BATTERIES HAVING A SECOND HIGHER TERMINAL VOLTAGE COMPRISING, IN COMBINATION, RECTIFIER MEANS ADAPTED TO BE CONNECTED BETWEEN A SOURCE OF ALTERNATING CURRENT AND THE BATTERY TO BE CHARGED TO SUPPLY A CHARGING CURRENT TO SAID BATTERY, CHARGING CURRENT REGULATING MEANS CONNECTED TO SAID RECTIFIER MEANS TO MAINTAIN THE CHARGING CURRENT SUPPLIED TO SAID BATTERY CONSTANT, TIMING MEANS FOR CONTROLLING THE ENERGIZATION OF SAID RECTIFIER MEANS FROM SAID SOURCE SO AS TO SUPPLY A CHARGING CURRENT TO SAID BATTERY FOR AT LEAST A PREDETERMINED MINIMUM PERIOD OF TIME BUT NOT LONGER THAN A PREDETERMINED MAXIMUM PERIOD OF TIME, FIRST VOLTAGE SENSITIVE RELAY MEANS CONNECTED TO SAID BATTERY AND ADAPTED TO DISCONNECT SAID RECTIFIER MEANS FROM SAID SOURCE WHEN SAID BATTERY ATTAINS A FULL STATE OF CHARGE BETWEEN SAID PREDETERMINED MINIMUM AND MAXIMUM CHARGING PERIODS, AND SECOND VOLTAGE SENSITIVE RELAY MEANS CONNECTED TO SAID BATTERY ADAPTED TO BE ENERGIZED ONLY WHEN SAID CHARGER IS CONNECTED TO BATTERIES HAVING SAID SECOND HIGHER TERMINAL VOLTAGE, SAID SECOND VOLTAGE SENSITIVE RELAY MEANS BEING CONNECTED WHEN ENERGIZED TO CHANGE THE SENSITIVITY OF SAID FIRST VOLTAGE RELAY MEANS, THE ENERGIZATION OF SAID RECTIFIER MEANS FROM SAID ALTERNATING CURRENT SOURCE AND THE CHARGING RATE OF SAID REGULATING MEANS.