US 12,296,711 B2
Bidirectional series connected totem pole for split phase DCAC
Muhammad Mobeen Mahmood, Irving, TX (US); and Steven Schulz, Torrance, CA (US)
Assigned to Rivian IP Holdings, LLC, Irvine, CA (US)
Filed by Rivian IP Holdings, LLC, Plymouth, MI (US)
Filed on Mar. 16, 2023, as Appl. No. 18/185,287.
Prior Publication US 2024/0308386 A1, Sep. 19, 2024
Int. Cl. B60L 55/00 (2019.01); B60L 53/63 (2019.01)
CPC B60L 55/00 (2019.02) [B60L 53/63 (2019.02); B60L 2210/30 (2013.01); B60L 2210/40 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a power stage circuit configured to convert an alternating current (AC) input, received from a port of a vehicle, input to a direct current (DC) output to charge a battery pack, the power stage circuit comprising:
a first circuit comprising a first totem pole circuit comprising a first set of switches that includes a first switch and a second switch, wherein the first switch and the second switch are configured to switch at a first switching frequency,
a second circuit comprising a second totem pole circuit comprising a second set of switches that includes a third switch and a fourth switch, wherein the third switch and the fourth switch are configured to switch at the first switching frequency,
a third circuit comprising a third set of switches that includes a fifth switch configured to switch at a second switching frequency less than the first switching frequency,
a fourth circuit having a fourth set of switches configured to switch at the first switching frequency,
a fifth circuit having a fifth set of switches configured to switch at the first switching frequency,
a sixth circuit having a sixth set of switches configured to switch at the second switching frequency, and
a first line electrically connected to the first totem pole circuit between the first switch and the second switch;
a second line electrically connected to the second totem pole circuit between the third switch and the fourth switch; and
a third line that forms a neutral line electrically coupled to the third circuit and the sixth circuit, wherein:
in response to a load on the first line, the power stage circuit converts a first DC input from the battery pack to a first AC output at the load,
in response to the load on the second line, the power stage circuit converts a second DC input from the battery pack to a second AC output at the load,
the first line and the second line are electrically connected to a power outlet configured to receive the load, the power outlet being separate from the port, and
the first line and the second line are configured to provide, via the battery pack, at least one of the first AC output or the second AC output to a power grid.