Battery cell tester

• US 3,315,140 A
• Filed: 04/28/1964
• Issued: 04/18/1967
• Est. Priority Date: 04/28/1964
• Status: Expired due to Term

• Current Assignee: Louis E. Dadin
• Original Assignee: Louis E. Dadin
• Inventors: Dadin, Louis E.
• Application Number:
  US04/363,308
• Time in Patent Office: 1,085 Days
• US Class Current: 324/434
• CPC Class Codes: G01R 31/396 Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery

Claims

1. APPARATUS FOR TESTING A BATTERY HAVING A PLURALITY OF SERIES CONNECTED CELLS, THERE BEING PROVIDED AN OUTPUT SIGNAL WHEN AT LEAST ONE OF THE CELLS HAS A PREDETERMINED LOW VOLTAGE, COMPRISING:

MEANS FOR INDICATING WHEN A CELL HAS LOW VOLTAGE COMPRISING NON-LINEAR RESISTANCE MEANS AND FIRST INDUCTANCE MEANS CONNECTED IN CIRCUIT WITH EACH BATTERY CELL;

A SECOND INDUCTANCE MEANS COUPLED TO EACH OF SAID FIRST INDUCTANCE MEANS;

OUTPUT MEANS FOR RECEIVING SAID INDICATION OF LOW VOLTAGE;

EACH OF SAID SECOND INDUCTANCE MEANS BEING CONNECTED AT ONE END TO A REFERENCE POTENTIAL AND AT THE OTHER END TO A SOURCE OF ALTERNATING CURRENT AND TO AN OUTPUT MEANS;