US 11,996,712 B2
Series-type charging and discharging apparatus without current interruption
Jeong Moog Kim, Daejeon (KR)
Assigned to HBL CORPORATION, Daejeon (KR)
Appl. No. 18/269,965
Filed by HBL CORPORATION, Daejeon (KR)
PCT Filed Apr. 7, 2021, PCT No. PCT/KR2021/004316
§ 371(c)(1), (2) Date Jun. 28, 2023,
PCT Pub. No. WO2022/145581, PCT Pub. Date Jul. 7, 2022.
Claims priority of application No. 10-2020-0185443 (KR), filed on Dec. 29, 2020; and application No. 10-2021-0023312 (KR), filed on Feb. 22, 2021.
Prior Publication US 2023/0396081 A1, Dec. 7, 2023
Int. Cl. H02J 7/00 (2006.01); H02J 1/04 (2006.01); H02J 1/10 (2006.01)
CPC H02J 7/0018 (2013.01) [H02J 1/04 (2013.01); H02J 1/102 (2013.01); H02J 1/106 (2020.01); H02J 7/00712 (2020.01); H02J 2207/20 (2020.01)] 9 Claims
OG exemplary drawing
 
1. A series-type charging and discharging apparatus without current interruption, in which the series-type charging and discharging apparatus has no current interruption by using a bi-directional main charging and discharging power supply, wherein
a plurality of secondary batteries connected in series are charged and discharged using one bi-directional main charging and discharging power supply, and
are continuously charged and discharged according to a charging and discharging recipe without interruption of a charging and discharging current of the main charging and discharging power supply,
wherein auxiliary charging power supplies are additionally installed in parallel to individual batteries connected in series to compensate for a capacity difference between a plurality of secondary batteries connected in series,
wherein each of the auxiliary charging power supplies is configured as an insulated unidirectional switch mode DC-to-DC converter which uses a power source of a DC grid, which is an input terminal of the main charging and discharging power supply, or one of separate DC power and AC power as an electrical input and uses a voltage of the individual battery as an output to compensate for a capacity difference between a plurality of secondary batteries connected in series,
wherein each of the auxiliary charging power supplies performs a function of supplementing a charging current for a battery with large capacity in a charging process of batteries connected in series and performs a function of supplementing a discharging current for a battery with small capacity in a discharging process of batteries connected in series.