US 12,206,296 B2
Motor controller and outer rotor motor comprising the same
Jianhui Li, Zhongshan (CN); Gui Zhang, Zhongshan (CN); Hairong Sun, Zhongshan (CN); Chao Guan, Zhongshan (CN); Xiaosan Xu, Zhongshan (CN); and Yunsheng Chen, Zhongshan (CN)
Assigned to ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD., Zhongshan (CN)
Filed by Zhongshan Broad-Ocean Motor Co., Ltd., Zhongshan (CN)
Filed on Aug. 30, 2022, as Appl. No. 17/899,593.
Application 17/899,593 is a continuation in part of application No. PCT/CN2021/115619, filed on Aug. 31, 2021.
Claims priority of application No. 202121381434.2 (CN), filed on Jun. 22, 2021.
Prior Publication US 2022/0416629 A1, Dec. 29, 2022
Int. Cl. H02K 11/33 (2016.01); H02K 5/04 (2006.01); H02K 7/08 (2006.01); H02K 9/22 (2006.01)
CPC H02K 11/33 (2016.01) [H02K 5/04 (2013.01); H02K 7/08 (2013.01); H02K 9/22 (2013.01)] 9 Claims
OG exemplary drawing
 
1. The motor controller of A motor controller, comprising:
a housing;
a power circuit board; and
a control circuit board;
wherein:
the housing comprises a first mounting platform, a second mounting platform, and a side wall; there is a height difference between the first mounting platform and the second mounting platform;
the first mounting platform is disposed on an upper part of the side wall, and the second mounting platform is disposed on a middle part of the side wall;
the second mounting platform is disposed on one side of the first mounting platform;
the first mounting platform and the side wall form an upper chamber, and the control circuit board and the power circuit board are disposed in the upper chamber; the control circuit board is closer to the first mounting platform than the power circuit board;
the second mounting platform and the side wall form a lower chamber; the lower chamber communicates with the upper chamber;
a rectifier bridge module protrudes from the power circuit board, and is attached to the second mounting platform for heat dissipation;
the second mounting platform comprises a recess; the rectifier bridge module is embedded in the recess for heat dissipation, and is locked on the second mounting platform through a locking device;
the locking device comprises a depression bar and at least two bolts; two ends of the recess are concave to form two gaps, respectively; a bottom surface of the recess in the two gaps comprises two mounting holes; two ends of the depression bar are disposed in the two gaps, respectively, whereby the depression bar presses on the rectifier bridge module; and the at least two bolts pass through the depression bar and fixedly screwed in the two mounting holes on the bottom surface of the recess;
a plurality of insulated gate bipolar transistors (IGBTs) is protruded from an edge of the control circuit board; a plurality of bosses is protruded from an edge of the first mounting platform, and the plurality of IGBTs is respectively attached to the plurality of bosses for heat dissipation; and
an electric reactor is disposed on the second mounting platform and is electrically connected to the power circuit board.