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Battery cell structure with limited cell penetrations

  • US 10,177,421 B2
  • Filed: 02/12/2015
  • Issued: 01/08/2019
  • Est. Priority Date: 02/12/2015
  • Status: Active Grant
First Claim
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1. A battery structure for monitoring development of impending faults of a battery cell, the battery structure comprising:

  • a cell housing;

    a battery cell comprising;

    a battery cell separator, located within the cell housing, formed of a light transmitting material that has light transmission characteristics that are a function of a state of an impending fault of the battery cell;

    a first electrode on a first side of the battery cell separator;

    a second electrode on a second side of the battery cell separator;

    a first cell tab connected to the first electrode and extending through and outwardly from the cell housing;

    a second cell tab connected to the second electrode and extending through and outwardly from the cell housing;

    a light source, located within the cell housing and external from an interior of the battery cell separator, positioned in optical communication with the battery cell separator to transmit light into said battery cell separator; and

    a light detector, located within the cell housing and positioned in optical communication with the battery cell separator to receive light transmitted through the battery cell separator,wherein an impending fault state of a portion of the battery cell associated with the light detector can be determined based on the received light, andwherein the cell housing encases the battery cell and is directly adjacent to the battery cell.

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