US 12,230,985 B2
Switched multi-cell battery system
Liang Jia, Palo Alto, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Jan. 23, 2024, as Appl. No. 18/420,318.
Application 18/420,318 is a continuation of application No. 17/281,524, granted, now 11,923,706, previously published as PCT/US2019/066330, filed on Dec. 13, 2019.
Claims priority of provisional application 62/905,650, filed on Sep. 25, 2019.
Prior Publication US 2024/0162726 A1, May 16, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 7/00 (2006.01)
CPC H02J 7/0024 (2013.01) [H02J 7/0016 (2013.01); H02J 7/0019 (2013.01); H02J 7/0029 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A switched multi-cell battery system for an electronic device, the switched multi-cell battery system comprising:
an input voltage node;
an output voltage node;
a ground node;
a plurality of rechargeable battery cells comprising at least a first rechargeable battery cell with a positive terminal and a negative terminal and a second rechargeable battery cell with a positive terminal and a negative terminal; and
a plurality of power control switches comprising at least:
a first power control switch having a gate terminal, a first channel terminal coupled to the input voltage node, and a second channel terminal coupled to the positive terminal of the first rechargeable battery cell;
a second power control switch having a gate terminal, a first channel terminal coupled to the second channel terminal of the first power control switch and the positive terminal of the first rechargeable battery cell, and a second channel terminal coupled to the output voltage node;
a third power control switch having a gate terminal, a first channel terminal coupled to the second channel terminal of the second power control switch and the positive terminal of the second rechargeable battery cell, and a second channel terminal coupled to the negative terminal of the first rechargeable battery cell; and
a fourth power control switch having a gate terminal, a first channel terminal coupled to the second channel terminal of the third power control switch, and a second channel terminal coupled to the ground node and the negative terminal of the second rechargeable battery cell.