US 12,444,971 B2
Power supply device capable of maintaining, over a long period, the function of increasing the voltage of a power generation element using a secondary battery
Toru Tanzawa, Hamamatsu (JP); and Hideki Uchida, Tokyo (JP)
Assigned to NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITY, (JP); and ZEON CORPORATION, (JP)
Appl. No. 17/768,322
Filed by NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITY, Shizuoka (JP); and ZEON CORPORATION, Tokyo (JP)
PCT Filed Oct. 13, 2020, PCT No. PCT/JP2020/038596
§ 371(c)(1), (2) Date Apr. 12, 2022,
PCT Pub. No. WO2021/075419, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 2019-190049 (JP), filed on Oct. 17, 2019.
Prior Publication US 2024/0113549 A1, Apr. 4, 2024
Int. Cl. H01M 10/46 (2006.01); H02J 7/00 (2006.01); H02J 7/34 (2006.01); H02J 50/00 (2016.01)
CPC H02J 7/342 (2020.01) [H02J 7/0063 (2013.01); H02J 7/345 (2013.01); H02J 50/001 (2020.01); H02J 2207/20 (2020.01); H02J 2207/50 (2020.01)] 6 Claims
OG exemplary drawing
 
1. A power supply device comprising:
a power generation element configured to convert external energy into electrical energy and output the electrical energy as a first voltage;
a secondary battery configured to be connected in series with the power generation element and output a second voltage; and
a power conversion unit configured to receive the first voltage and the second voltage and output power to a load circuit,
wherein the power conversion unit includes
a voltage conversion unit connected in series with the power generation element and the secondary battery;
a power storage unit connected to the voltage conversion unit;
a first output terminal configured to connect the power storage unit to the load circuit; and
a second output terminal configured to connect the power storage unit to the secondary battery.