US 11,990,799 B2
Capacitor module, inverter module, and motor unit
Naoki Iwagami, Kawasaki (JP)
Assigned to NIDEC ELESYS CORPORATION, Kanagawa (JP)
Filed by Nidec Elesys Corporation, Kawasaki (JP)
Filed on Nov. 10, 2021, as Appl. No. 17/522,986.
Claims priority of application No. 2020-199017 (JP), filed on Nov. 30, 2020.
Prior Publication US 2022/0173640 A1, Jun. 2, 2022
Int. Cl. H02K 11/33 (2016.01); H02K 3/50 (2006.01); H02K 9/19 (2006.01); H02K 11/01 (2016.01)
CPC H02K 11/33 (2016.01) [H02K 3/50 (2013.01); H02K 9/19 (2013.01); H02K 11/0141 (2020.08); H02K 2203/09 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A capacitor module that smooths a voltage of an inverter circuit, the capacitor module comprising:
a supply assembly including a connection terminal to the inverter circuit;
an alternating-current assembly including a capacitor and a plate-shaped first bus bar connecting the capacitor and the supply assembly; and
a direct-current assembly including a plate-shaped second bus bar connecting a DC power source and the supply assembly; wherein
the alternating-current assembly and the direct-current assembly are side by side in a plan view and in one side view of the capacitor module, and are arranged with side surfaces of the alternating-current assembly and the direct-current assembly opposing each other in an opposite side view of the capacitor module;
the supply assembly is located inside an outer peripheral region collectively surrounding both the alternating-current assembly and the direct-current assembly in the plan view;
the plate-shaped first bus bar extends in or substantially in a first direction in a plan view; and
the plate-shaped second bus bar extends in or substantially in a second direction in the plan view, the second direction being parallel to the first direction.