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Pat. 11239663 United States, Int. Cl.22 H02J 3/32, H02J 7/00, H02J 7/02, H02M 7/219, H02M 7/5387. Energy storage device and power system and control method thereof : Appl. N 17/190288 : Filed 02.03.2021 : Pub. 01.02.2022 : / Li Chen, Changyong Wang, Yansong Lu, Aibin Qiu ; Assignee Delta Electronics Shanghai Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11239663/en?oq=US11239663.html (дата обращения: ДД.ММ.ГГГГ).