MOTOR DRIVING DEVICE AND ELECTRIC POWER STEERING APPARATUS

• Main Author: IWASAKI AKIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 25.04.2019
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MOTOR VEHICLES; PERFORMING OPERATIONS; TRAILERS; TRANSPORTING

To downsize a motor control device and the entirety of a motor assembly.SOLUTION: The motor control device for controlling a motor, includes a resin cover obtained by integrally forming an external power source connector which is connected to a power supply source and a plurality of external signal connectors from a resin material, a control substrate at least having an arithmetic operation device mounted thereon, a power substrate at least having an inverter circuit and a plurality of electrolytic capacitors mounted thereon, and a heat sink which dissipates heat generated by the control substrate and heat generated by the power substrate. The motor control device is electrically connected to the motor. Regarding the resin cover, the control substrate, the power substrate, and the heat sink, the power substrate, the heat sink, the control substrate, and the resin cover are arranged in this order in the motor axis direction from the motor side. The plurality of electrolytic capacitors are mounted on the motor-side surface of the power substrate. The power substrate is covered with a housing of the motor.SELECTED DRAWING: Figure 3B 【課題】モータ制御装置およびモータの組立体全体を小型化する。【解決手段】電力供給源に接続される外部電源コネクタと、複数の外部信号コネクタとを樹脂材料によって一体成形した樹脂カバーと、少なくとも演算装置を実装した制御基板と、少なくともインバータ回路と、複数の電解コンデンサとを実装したパワー基板と、制御基板が発生する熱と、パワー基板が発生する熱とを放熱するヒートシンクとを備え、モータを制御するモータ制御装置であって、モータ制御装置は、モータに電気的に接続され、樹脂カバーと制御基板とパワー基板とヒートシンクとは、モータの軸方向にモータの側から、パワー基板、ヒートシンク、制御基板、樹脂カバーの順に配列され、複数の電解コンデンサは、パワー基板のうちのモータの側の面に実装され、パワー基板は、モータのハウジングによって覆われている、モータ制御装置。【選択図】図３Ｂ