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Pat. 11509146 United States, Int. Cl.22 H02J 7/00, H02M 1/00, H02M 1/08, H02M 3/07, H02J 1/10, H02J 3/38, H02J 3/46, H02M 3/158. Dual-battery charging apparatus and control method : Appl. N 17/858342 : Filed 06.07.2022 : Pub. 22.11.2022 : / Junhe Zhang, Fuchun Zhan, Miaosong Wu ; Assignee Nuvolta Technologies Hefei Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11509146/en?oq=US11509146.html (дата обращения: ДД.ММ.ГГГГ).