Sealed alkaline battery cell with automatic charging cut-off

• US 3,081,366 A
• Filed: 05/10/1961
• Issued: 03/12/1963
• Est. Priority Date: 05/10/1961
• Status: Expired due to Term

• Current Assignee: Louis Belove
• Original Assignee: Louis Belove
• Inventors: LOUIS BELOVE
• Application Number:
  US04/109,195
• Time in Patent Office: 671 Days
• US Class Current: 429/58
• CPC Class Codes: H01M 2200/20 Pressure-sensitive devices
• CPC Class Codes: H01M 50/3425 in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
• CPC Class Codes: H01M 50/56 Cup shaped terminals
• CPC Class Codes: H01M 50/574 Devices or arrangements for the interruption of current
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Claims

1. IN A SEALED, RECHARGEABLE STORAGE BATTERY CELL, AN ELECTRODE ASSEMBLY HAVING ONE CELL ELECTRODE AND AT LEAST ONE OTHER OPPOSITE-POLARITY CELL ELECTRODE WITH ELECTROLYTE HELD BETWEEN SAID ELECTRODES AND TENDING TO DEVELOP GASES UPON RECHARGING SAID CELL, A METALLIC CASING ENCLOSING SAID ELECTRODE ASSEMBLY AND COMPRISING A TUBULAR CASING CONSTITUTING ONE CELL TERMINAL MEMBER CONNECTED TO ONE OF SAID ELECTRODES, A METALLIC SHEET MEMBER CONNECTED TO THE OTHER OF SAID ELECTRODES AND BEING AFFIXED ALONG ITS PERIPHERY TO THE ADJACENT PERIPHERY OF SAID TUBULAR CASING MEMBER BY A GAS-TIGHT JUNCTION REGION AND CONSTITUTING THEREWITH A GAS-TIGHT ENCLOSURE AROUND SAID ELECTRODE ASSEMBLY, SAID JUCTION REGION INCLUDING THE INSULATING SHEET MEMBER OVERLAPPING THE PERIPHERAL SHEET EDGE REGION OF SAID SHEET MEMBER AND ELECTRICALLY INSULATING IT FROM SAID TUBULAR CASING MEMBER, SAID SHEET MEMBER HAVING A RELATIVELY THIN INTERMEDIATE ACTUATING SHEET SECTION DEFLECTABLE TO THE EXTERIOR BY GAS PRESSURE WITHIN SAID ENCLOSURE, A METALLIC EXTERNAL TERMINAL HELD INSULATINGLY FIXED BY SAID JUCTION REGION SPACED FROM THE EXTERIOR OF SAID ACTUATING SHEET SECTION, AND MOVABLE SWITCH STRUCTURE CARRIED BY SAID CELL BETWEEN SAID SHEET SECTION AND SAID EXTERNAL TERMINAL, SAID SWITCH STRUCTURE HAVING A MOVABLE SWITCH ACTUATING PORTION NORMALLY CONTACTING SAID ACTUATING SHEET PORTION AND A SWITCH CONTACT PORTION NORMALLY CONNECTED TO SAID SWITCH ACTUATION PORTION AND CONTACTING A CONTACT PORTION OF SAID