Battery cells with reduced tearing of outer current collectors attached using ultrasonic welding
AssigneeGM Global Technology Operations LLC
InventorsYong Lu, Haijing Liu, Teresa Jean Rinker
Life of this patent
Estimating the term…
Abstract
A battery cell includes a plurality of electrodes including a plurality of anode electrodes and a plurality of cathode electrodes. The plurality of electrodes is arranged in one of a stacked architecture and a winding architecture. Each of the plurality of electrodes includes a current collector and active material arranged on opposite sides of the current collector. The current collector of one or more outermost ones of the plurality of electrodes is thicker than the current collectors of remaining ones of the plurality of electrodes having the same anode/cathode type.
Claims19
A battery cell comprising:
- a plurality of electrodes including:
- a plurality of anode electrodes;
- and
- a plurality of cathode electrodes,
- the plurality of electrodes is arranged in one of a stacked architecture and a winding architecture;
- each of the plurality of electrodes includes a current collector and active material arranged on both sides of the current collector;
- the current collector of one or more outermost ones of the plurality of anode electrodes is thicker than the current collectors of remaining ones of the plurality of anode electrodes;
- and
- the current collector of one or more outermost ones of the plurality of cathode electrodes is thicker than the current collectors of remaining ones of the plurality of cathode electrodes.
A battery cell comprising:
- a plurality of electrodes including:
- a plurality of anode electrodes;
- and
- a plurality of cathode electrodes;
- the plurality of electrodes is arranged in a stacked architecture;
- each of the plurality of electrodes includes a current collector and active material arranged on both sides of the current collector;
- the plurality of anode electrodes includes a plurality of first tabs, respectively, that are ultrasonically welded to an external anode tab;
- the plurality of cathode electrodes includes a plurality of second tabs, respectively, that are ultrasonically welded to an external cathode tab;
- the first tabs and the second tabs are located on one of a same side of the battery cell and different sides of the battery cell;
- the current collector of one or more outermost ones of the plurality of anode electrodes is thicker than the current collectors of remaining ones of the plurality of anode electrodes;
- and
- the current collector of one or more outermost ones of the plurality of cathode electrodes is thicker than the current collector of remaining ones of the plurality of cathode electrodes.
A battery cell comprising:
- a plurality of electrodes including:
- a plurality of anode electrodes;
- and
- a plurality of cathode electrodes;
- the plurality of electrodes is arranged in one of a winding architecture;
- each of the plurality of electrodes includes a current collector and active material arranged on both sides of the current collector;
- and
- the plurality of anode electrodes includes a plurality of first tabs, respectively, that are ultrasonically welded to an external anode tab;
- the plurality of cathode electrodes includes a plurality of second tabs, respectively, that are ultrasonically welded to an external cathode tab;
- the first tabs and the second tabs are located on one of a same side of the battery cell and different sides of the battery cell;
- the current collector of one or more outermost ones of the plurality of anode electrodes is thicker than the current collectors of remaining ones of the plurality of anode electrodes;
- and
- the current collector of one or more outermost ones of the plurality of cathode electrodes is thicker than the current collector of remaining ones of the plurality of cathode electrodes.
Dependencies are inferred from the claim text.