Secondary electric batteries having plurality of thin flexible intermediate bipolar plates

• US 3,390,014 A
• Filed: 05/19/1964
• Issued: 06/25/1968
• Est. Priority Date: 05/11/1960
• Status: Expired due to Term

• Current Assignee: Paul Eisler
• Original Assignee: Paul Eisler
• Inventors: Eisler, Paul
• Application Number:
  US04/368,544
• Time in Patent Office: 1,498 Days
• US Class Current: 429/150
• CPC Class Codes: H01M 10/0413 Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
• CPC Class Codes: H01M 10/0445 Multimode batteries, e.g. containing auxiliary cells or electrodes switchable in parallel or series connections
• CPC Class Codes: H01M 10/18 with bipolar electrodes
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/615 Heating or keeping warm
• CPC Class Codes: H01M 10/6555 arranged between the cells
• CPC Class Codes: H01M 10/6557 arranged between the cells
• CPC Class Codes: H01M 10/6562 with free flow by convection only
• CPC Class Codes: H01M 10/6567 Liquids
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Claims

1. A SECONDARY ELECTRIC BATTERY HAVING A PLURALITY OF INDIVIDUAL CELLS TO BE ACTIVATED BY AN ELECTROLYTE AND CONNECTED ELECTRICALLY IN SERIES, INCLUDING A PLURALITY OF CLOSELY SPACED GENERALLY PARALLEL ALIGNED THIN FLEXIBLE INTERMEDIATE BIPOLAR PLATES, EACH INTERMEDIATE BIPOLAR PLATE COMPRISING A BARRIER LAYER AND TWO OUTER LAYERS, THE BARRIER LAYER BEING AS A WHOLE ELECTRICALLY CONDUCTIVE THROUGH ITS THICKNESS OVER SUBSTANTIALLY ALL OF ITS AREA AND IMPERVIOUS TO THE ELECTROLYTE AND THE TWO OUTER LAYERS BEING OF ACTIVE MATERIAL ON OPPOSITE SIDES OF THE BARRIER LAYER AND IN GOOD CONTACT THEREWITH OVER SUBSTANTIALLY ITS WHOLE AREA, THE PLATES BEING ARRANGED SO THAT ACTIVE LAYRES OF OPPOSITE POLARITY ALTERNATE THROUGHOUT THE SERIES, A BARRIER LAYER WITH A SINGLE LAYER OF ACTIVE MATERIAL OF APPROPRIATE POLARITY CLOSING EACH OF THE TWO END CELLS OF THE SERIES, FLEXIBLE ELECTROLYTE RESISTANT ELECTRICAL INSULATING MATERIAL COMPLETING ELECTROLYTE CHAMBERS BETWEEN THE ACTIVE LAYERS OF SUCCESSIVE BIPOLAR PLATES AND OF THE END CELLS, PERVIOUS ELECTRICALLY INSULATING MEANS LOCATED BETWEEN THE ACTIVE LAYERS IN EVERY CELL, PERVIOUS SUPPORTING MEANS DISPOSED OVER SUBSTANTIALLY THE WHOLE AREA OF EACH ACITVE LAYER, AND MEANS EXERTING ENDWISE PRESSURE ON THE BATTERY THEREBY CAUSING SAID SUPPORTING MEANS TO HOLD THE ACTIVE LAYERS EACH IN PRESSURE CONTACT WITH ITS RESPECTIVE BARRIER LAYER OVER SUBSTANTIALLY THE WHOLE AREA OF THE BARRIER LAYER.