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Pat. 11211868 United States, Int. Cl.22 H02J 7/00, B25F 5/02, H01M 50/20, H01M 50/296, H02M 3/28, H02M 7/06, H02M 7/5387, B23D 45/16, B23D 47/12, B25B 21/02, H01M 50/247, H02P 27/06. DC power supply device : Appl. N 16/766701 : Filed 31.10.2018 : Pub. 28.12.2021 : / Takuya Yoshinari, Yuji Kishima ; Assignee Koki Holdings Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11211868/en?oq=US11211868.html (дата обращения: ДД.ММ.ГГГГ).