Patents by Inventor Ronghua Bi
Ronghua Bi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8933656Abstract: A blower system, including a permanent magnet motor and a wind wheel. The permanent magnet motor includes a stator assembly, a rotor assembly, and a motor controller. The rotor assembly includes a salient pole rotor including a rotor core and magnets embedded in the rotor core. The motor controller includes a microprocessor, a frequency inverter, and a sensor unit. The sensor unit inputs a phase current or phase currents, a phase voltage, and a DC bus voltage into the microprocessor. The microprocessor outputs a signal to control the frequency inverter which is connected to a winding of the stator assembly. The ratio between an air gap of the motor and the thickness of the magnets ranges from 0.03 to 0.065, and the ratio between the length of a pole arc and the length of the magnets ranges from 0.8 to 1.0.Type: GrantFiled: March 18, 2013Date of Patent: January 13, 2015Assignee: Zhongshan Broad-Ocean Motor Co., Ltd.Inventors: Zheng Zhang, Jizhong Wang, Mingpan Pan, Yong Zhao, Yiqiao Zhou, Ronghua Bi
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Patent number: 8686674Abstract: A method for controlling a brushless DC motor, comprising transmitting a phase-inversion signal to a motor control unit by a rotor position detecting unit after a motor enters a stable state, advancing or delaying phase shift by the motor control unit at an offset electrical angle, recording and comparing phase current values In at different offset electrical angles whereby obtaining an optimum offset angle ?m corresponding to the minimum phase current value Imin, and advancing or delaying phase shift by the motor at the optimum offset angle ?m. As the motor enters a stable state, the motor advances or delays phase shift at the optimum offset angle ?m, at this time operating current of a coil winding of the motor is the minimum, which saves power and reduces cost.Type: GrantFiled: March 19, 2010Date of Patent: April 1, 2014Assignee: Zhongzshan Broad-Ocean Motor Co., Ltd.Inventors: Ronghua Bi, Yong Zhao
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Publication number: 20130320889Abstract: A blower system, including a permanent magnet motor and a wind wheel. The permanent magnet motor includes a stator assembly, a rotor assembly, and a motor controller. The rotor assembly includes a salient pole rotor including a rotor core and magnets embedded in the rotor core. The motor controller includes a microprocessor, a frequency inverter, and a sensor unit. The sensor unit inputs a phase current or phase currents, a phase voltage, and a DC bus voltage into the microprocessor. The microprocessor outputs a signal to control the frequency inverter which is connected to a winding of the stator assembly. The ratio between an air gap of the motor and the thickness of the magnets ranges from 0.03 to 0.065, and the ratio between the length of a pole arc and the length of the magnets ranges from 0.8 to 1.0.Type: ApplicationFiled: March 18, 2013Publication date: December 5, 2013Applicant: Zhongshan Broad-Ocean Motor Co., Ltd.Inventors: Zheng ZHANG, Jizhong WANG, Mingpan PAN, Yong ZHAO, Yiqiao ZHOU, Ronghua BI
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Patent number: 8030820Abstract: An electric motor, including stator core, a shaft, and a shock-absorbing connector including multiple brackets, and a rubber pad. The stator core and the shaft are disposed between the brackets, the shaft is nested in the stator core but not directly mechanically-connected thereto, tightly abuts against the bracket, and passes through the stator core. A through hole is disposed in the stator core and parallel to the shaft, and the rubber pad is received in the through hole.Type: GrantFiled: September 6, 2010Date of Patent: October 4, 2011Assignee: Zhongshan Broad-Ocean Motor Co., ltd.Inventors: Ronghua Bi, Huaxin Wu
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Publication number: 20100327676Abstract: An electric motor, including stator core, a shaft, and a shock-absorbing connector including multiple brackets, and a rubber pad. The stator core and the shaft are disposed between the brackets, the shaft is nested in the stator core but not directly mechanically-connected thereto, tightly abuts against the bracket, and passes through the stator core. A through hole is disposed in the stator core and parallel to the shaft, and the rubber pad is received in the through hole.Type: ApplicationFiled: September 6, 2010Publication date: December 30, 2010Applicant: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.Inventors: Ronghua BI, Huaxin WU
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Patent number: 7812485Abstract: A motor, including at least a stator core (1), a shaft (2) nested around the stator core (1), and shock-absorbing connector, wherein the shock-absorbing connector is disposed between the stator core (1) and the shaft (2) so as to absorb and buffer unbalanced counterforces acting on the stator core (1) and to dampen the shocks experienced by the shaft (2) and reduce the overall noise generated by the motor.Type: GrantFiled: July 17, 2007Date of Patent: October 12, 2010Assignee: Zhongshan Broad-Ocean Motor Co., Ltd.Inventors: Ronghua Bi, Huaxin Wu
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Patent number: 7812487Abstract: Taught herein is a controller for a DC brushless motor comprising a control board (3) and a housing (4); wherein the control board (3) is disposed in the housing (4), and the housing (4) is made of metal materials with good thermal conductivity; a plurality of heat sinks (5) are disposed at the bottom of the housing (4), thereby heat generated by the control board (3) will be dissipated fast, and the operating temperature and failure rates are reduced; an integrated power module chip (7) disposed at the bottom of the control board (3) transfers heat to the housing (4) via an insulating heat sink (8), and in doing so prevents electric leakage; the purpose of a plurality of gaps (9) disposed at the top of the housing (4) is to provide ventilation, and to dissipate heat fast; all of these design characteristics make the invention simple in structure, and convenient for mass assembly.Type: GrantFiled: May 28, 2007Date of Patent: October 12, 2010Assignee: Zhongshan Broad-Ocean Motor Co., Ltd.Inventors: Ronghua Bi, Maosen Zeng, Jianwei Jin, Songfa Tang
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Publication number: 20100237814Abstract: A method for controlling a brushless DC motor, comprising transmitting a phase-inversion signal to a motor control unit by a rotor position detecting unit after a motor enters a stable state, advancing or delaying phase shift by the motor control unit at an offset electrical angle, recording and comparing phase current values In at different offset electrical angles whereby obtaining an optimum offset angle ?m corresponding to the minimum phase current value Imin, and advancing or delaying phase shift by the motor at the optimum offset angle ?m. As the motor enters a stable state, the motor advances or delays phase shift at the optimum offset angle ?m, at this time operating current of a coil winding of the motor is the minimum, which saves power and reduces cost.Type: ApplicationFiled: March 19, 2010Publication date: September 23, 2010Applicant: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.Inventors: Ronghua BI, Yong ZHAO
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Patent number: 7737583Abstract: A rotor assembly comprising: an inner rotor and an outer rotor for rotating in a magnetic field of a motor, the inner rotor comprising a main inner rotor cavity, and a plurality of first holes being formed between the inner rotor and the outer rotor; two side boards, each side board having a main side board cavity, and being perforated by a plurality of second holes; two damping elements each damping element comprising a main damping element cavity; a plurality of rubber sleeves, each rubber sleeve having a rubber sleeve lip; and a plurality of third holes; an axle; and a plurality of positioning pins.Type: GrantFiled: August 3, 2008Date of Patent: June 15, 2010Assignee: Zhongshan Broad-Ocean Motor Co., Ltd.Inventor: Ronghua Bi
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Patent number: 7671551Abstract: The invention teaches a brushless DC motor, comprising a brushless DC motor unit and a controller unit, wherein the brushless DC motor unit comprises a stator assembly, a permanent magnet rotor assembly magnetically coupled with the stator assembly, an enclosure supporting the installation of stator assembly and the permanent magnet rotator assembly, an end shield installed at the end of the enclosure, the rotating shaft of the permanent magnet rotor assembly projecting out of the end shield; the controller unit comprises an integrated power module, a microprocessor unit, a rotor position sensing circuit, a power source circuit, an I/O interface circuit, a current-sensing circuit, and a controller box; and the controller unit is electrically connected to the brushless DC motor unit.Type: GrantFiled: June 17, 2007Date of Patent: March 2, 2010Assignee: Zhongshan Broad-Ocean Motor Co., Ltd.Inventors: Ronghua Bi, Aiqian Peng, Wenwei Huang, Maosen Zeng, Jianwei Jin
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Patent number: 7659645Abstract: A rotor assembly comprising a rotor for rotating in a magnetic field of a motor, the rotor comprising a main rotor cavity and a plurality of first holes; two side boards, each side board comprising a sleeve-shaped main side board body and a disc-shaped outer side board body, the side board body having a main side board cavity, and the outer side board body being perforated by a plurality of second holes; two damping elements each damping element comprising a main damping element cavity; a plurality of rubber sleeves, each rubber sleeve having a rubber sleeve lip; and a plurality of third holes; an axle; and a plurality of positioning pins.Type: GrantFiled: July 10, 2008Date of Patent: February 9, 2010Assignee: Zhongshan Broad-Ocean Motor Co., Ltd.Inventor: Ronghua Bi
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Publication number: 20080284274Abstract: A rotor assembly comprising: an inner rotor and an outer rotor for rotating in a magnetic field of a motor, the inner rotor comprising a main inner rotor cavity, and a plurality of first holes being formed between the inner rotor and the outer rotor; two side boards, each side board having a main side board cavity, and being perforated by a plurality of second holes; two damping elements each damping element comprising a main damping element cavity; a plurality of rubber sleeves, each rubber sleeve having a rubber sleeve lip; and a plurality of third holes; an axle; and a plurality of positioning pins.Type: ApplicationFiled: August 3, 2008Publication date: November 20, 2008Applicant: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.Inventor: Ronghua BI
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Publication number: 20080265698Abstract: A rotor assembly comprising a rotor for rotating in a magnetic field of a motor, the rotor comprising a main rotor cavity and a plurality of first holes; two side boards, each side board comprising a sleeve-shaped main side board body and a disc-shaped outer side board body, the side board body having a main side board cavity, and the outer side board body being perforated by a plurality of second holes; two damping elements each damping element comprising a main damping element cavity; a plurality of rubber sleeves, each rubber sleeve having a rubber sleeve lip; and a plurality of third holes; an axle; and a plurality of positioning pins.Type: ApplicationFiled: July 10, 2008Publication date: October 30, 2008Applicant: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.Inventor: Ronghua BI
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Publication number: 20080143198Abstract: Taught herein is a motor, comprising a stator core (1), a shaft (2) nested around the stator core (1), and shock-absorbing connector, wherein the shock-absorbing connector is disposed between the stator core (1) and the shaft (2) so as to absorb and buffer unbalanced counterforces acting on the stator core (1) and to dampen the shocks experienced by the shaft (2) and reduce the overall noise generated by the motor.Type: ApplicationFiled: July 17, 2007Publication date: June 19, 2008Applicant: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.Inventors: Ronghua BI, Huaxin WU
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Publication number: 20080050099Abstract: The invention teaches a brushless DC motor, comprising a brushless DC motor unit and a controller unit, wherein the brushless DC motor unit comprises a stator assembly, a permanent magnet rotor assembly magnetically coupled with the stator assembly, an enclosure supporting the installation of stator assembly and the permanent magnet rotator assembly, an end shield installed at the end of the enclosure, the rotating shaft of the permanent magnet rotor assembly projecting out of the end shield; the controller unit comprises an integrated power module, a microprocessor unit, a rotor position sensing circuit, a power source circuit, an I/O interface circuit, a current-sensing circuit, and a controller box; and the controller unit is electrically connected to the brushless DC motor unit.Type: ApplicationFiled: June 17, 2007Publication date: February 28, 2008Applicant: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.Inventors: Ronghua BI, Aiqiang PENG, Wenwei HUANG, Maosen ZENG, Jianwei JIN
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Publication number: 20080048535Abstract: Taught herein is a controller for a DC brushless motor comprising a control board (3) and a housing (4); wherein the control board (3) is disposed in the housing (4), and the housing (4) is made of metal materials with good thermal conductivity; a plurality of heat sinks (5) are disposed at the bottom of the housing (4), thereby heat generated by the control board (3) will be dissipated fast, and the operating temperature and failure rates are reduced; an integrated power module chip (7) disposed at the bottom of the control board (3) transfers heat to the housing (4) via an insulating heat sink (8), and in doing so prevents electric leakage; the purpose of a plurality of gaps (9) disposed at the top of the housing (4) is to provide ventilation, and to dissipate heat fast; all of these design characteristics make the invention simple in structure, and convenient for mass assembly.Type: ApplicationFiled: May 28, 2007Publication date: February 28, 2008Applicant: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.Inventors: Ronghua BI, Maosen ZENG, Jianwei JIN, Songfa TANG
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Patent number: RE48231Abstract: A blower system, including a permanent magnet motor and a wind wheel. The permanent magnet motor includes a stator assembly, a rotor assembly, and a motor controller. The rotor assembly includes a salient pole rotor including a rotor core and magnets embedded in the rotor core. The motor controller includes a microprocessor, a frequency inverter, and a sensor unit. The sensor unit inputs a phase current or phase currents, a phase voltage, and a DC bus voltage into the microprocessor. The microprocessor outputs a signal to control the frequency inverter which is connected to a winding of the stator assembly. The ratio between an air gap of the motor and the thickness of the magnets ranges from 0.03 to 0.065, and the ratio between the length of a pole arc and the length of the magnets ranges from 0.8 to 1.0.Type: GrantFiled: December 20, 2016Date of Patent: September 29, 2020Assignee: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.Inventors: Zheng Zhang, Jizhong Wang, Mingpan Pan, Yong Zhao, Yiqiao Zhou, Ronghua Bi