Foxconn Technology Co., Ltd.

Wei-Ben Wang

Ching-Hsing Huang

Hsien-Sheng Pei

Chien-Long Hong

Wun-Chang Shih

Huan-Chao Lin

Fong-Tan Yu

Hsiang-Ho Huang

Chiung-Mei Wang

Chin-Jung Chen

A liquid pump () includes a top cover (), a back plate (), and a spacing member (). The spacing member is sandwiched between the top cover and the back plate, thereby dividing an interior of the liquid pump into a fluid chamber () and a receiving cavity () isolated and hermetical from the fluid chamber. The fluid chamber is disposed between the top cover and the spacing member for receiving therein a fluid dynamic bearing () and a rotor () which drives working fluid to enter and leave the liquid pump. The receiving cavity is disposed between the spacing member and the back plate for receiving therein a stator () which drives the rotor to rotate in respective to the bearing.

Liquid pump

A sensorless and brushless motor is disclosed including a stator, a rotor, a control circuit and an induction coil (). The stator includes a stator core () and a stator coil () wound around the stator core. The rotor includes a rotor magnet (). The control circuit is electrically connected with the stator coil for controlling a current energizing the stator coil. The induction coil is mounted to the stator and electrically connected with the control circuit. When the rotor rotates, the induction coil is capable of outputting a signal to the control circuit and in response to the signal, the control circuit is capable of changing a direction of the current flowing in the stator coil. Thus, the commutation control for the stator coil is performed by the induction coil and the conventional Hall sensor is eliminated.

Sensorless and brushless DC motor

Growing community of inventors

Guangdong, China

Wei-Ben Wang