Apparatus and System for an Internal Fuse in a Battery Cell

A battery comprising:

• a plurality of battery cells, each battery cell comprising:
• an anode sheet;
• a cathode sheet;
• a separator situated between the anode sheet and the cathode sheet and electrically separating the anode sheet and the cathode sheet;
• and
• a fuse dividing at least one of:
• the anode sheet into two separate areas, wherein the fuse electrically isolates the two separate areas of the anode sheet in response to the fuse reaching a predefined threshold temperature;
• the cathode sheet into two separate areas, wherein the fuse electrically isolates the two separate areas of the cathode sheet in response to the fuse reaching a predefined threshold temperature.

A lithium ion battery comprising:

• a control module that manages the charging and discharging process of the lithium ion battery;
• a plurality of lithium ion battery cells, each battery cell comprising:
• an anode sheet;
• a cathode sheet;
• an anode current collector electrically connecting the anode sheet to an anode of the lithium ion battery, wherein the anode current collector comprises two pieces;
• a cathode current collector electrically connecting the cathode sheet to a cathode of the lithium ion battery, wherein the cathode current collector comprises two pieces;
• a separator situated between the anode sheet and the cathode sheet and electrically separating the anode sheet and the cathode sheet while allowing ions to pass between the anode sheet and the cathode sheet;
• and
• a first fuse joining the first piece of the anode current collector with the second piece of the anode current collector, wherein the first fuse increases in resistance and substantially stops current from passing through the first fuse in response to the first fuse reaching a temperature of between 125° C. and 150° C.;
• and
• a second fuse joining the first piece of the cathode current collector with the second piece of the cathode current collector, wherein the second fuse increases in resistance and substantially stops current from passing through the second fuse in response to the second fuse reaching a temperature of between 125° C. and 150° C.

An electrical system comprising:

• an electronic device that requires electrical power for operation;
• a battery that provides electrical power to the electronic device, the battery comprising a plurality of battery cells, each battery cell comprising:
• an anode sheet;
• a cathode sheet;
• a separator situated between the anode sheet and the cathode sheet and electrically separating the anode sheet and the cathode sheet;
• and
• a fuse dividing at least one of:
• the anode sheet into separate areas, wherein the fuse electrically isolates the separate areas of the anode sheet in response to the fuse reaching a predefined threshold temperature;
• and
• the cathode sheet into separate areas, wherein the fuse electrically isolates the separate areas of the cathode sheet in response to the fuse reaching a predefined threshold temperature.