US 12,451,793 B2
Charging system
Hiroyuki Hosoi, Osaka (JP); and Atsushi Seki, Kanagawa (JP)
Assigned to Panasonic Automotive Systems Co., Ltd., Kanagawa (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Feb. 8, 2023, as Appl. No. 18/166,287.
Claims priority of application No. 2022-027241 (JP), filed on Feb. 24, 2022.
Prior Publication US 2023/0268818 A1, Aug. 24, 2023
Int. Cl. H02M 7/219 (2006.01); H02J 7/02 (2016.01); H02M 1/00 (2006.01); H02M 1/08 (2006.01); H02M 3/00 (2006.01); H02M 3/335 (2006.01)
CPC H02M 1/0048 (2021.05) [H02J 7/02 (2013.01); H02M 1/08 (2013.01); H02M 3/01 (2021.05); H02M 3/33573 (2021.05); H02M 7/219 (2013.01); H02J 2207/20 (2020.01)] 4 Claims
OG exemplary drawing
 
1. A charging system comprising:
an AC-DC converter connected between an input node and an intermediate node and connectable to a power source via the input node;
a DC-DC converter connected between the intermediate node and an output node and connectable to a battery via the output node; and
a control circuit configured to control a voltage of the intermediate node so as to reduce a sum of a loss in the AC-DC converter and a loss in the DC-DC converter, in accordance with a first parameter related to input power of the AC-DC converter, and a second parameter related to output power of the DC-DC converter,
wherein the control circuit is configured to control the voltage of the intermediate node so as to reduce the sum of the loss in the AC-DC converter and the loss in the DC-DC converter, in accordance with a third parameter related to an ambient temperature, and
wherein the ambient temperature is a temperature of a switching element or a temperature of a rectifier.