WO2008077286A1 - Moteur en cc avec du nd-fe-b - Google Patents

Moteur en cc avec du nd-fe-b Download PDF

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Publication number
WO2008077286A1
WO2008077286A1 PCT/CN2006/003619 CN2006003619W WO2008077286A1 WO 2008077286 A1 WO2008077286 A1 WO 2008077286A1 CN 2006003619 W CN2006003619 W CN 2006003619W WO 2008077286 A1 WO2008077286 A1 WO 2008077286A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
rotor
magnetic cylinder
neodymium iron
iron boron
Prior art date
Application number
PCT/CN2006/003619
Other languages
English (en)
Chinese (zh)
Inventor
Xisheng Hu
Jianjun Yu
Original Assignee
Guangdong Zhaoqing L & V Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Zhaoqing L & V Co., Ltd. filed Critical Guangdong Zhaoqing L & V Co., Ltd.
Priority to CN2006800561584A priority Critical patent/CN101529700B/zh
Priority to PCT/CN2006/003619 priority patent/WO2008077286A1/fr
Publication of WO2008077286A1 publication Critical patent/WO2008077286A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation

Definitions

  • the present invention relates to a DC motor, and more particularly to a small, efficient, and cost effective NdFeB magnetic cylinder DC motor.
  • a small DC motor uses a permanent magnet as a magnetic pole.
  • the most commonly used permanent magnet material is a low-cost ferrite magnet, but the disadvantage of the ferrite magnet motor is that it is bulky, heavy, and inefficient.
  • the existing NdFeB magnetic tile motors are generally used in applications requiring a small volume, such as some small cooling fan motors and optical disk drive motors, which have the disadvantage of being small in power and capable of operating at high current and high power.
  • the object of the present invention is to provide a small and efficient neodymium iron boron magnetic cylinder motor, which is small in size, light in weight, high in efficiency, relatively high in torque, and relatively low in cost compared with the conventional ferrite permanent magnet small DC motor.
  • a small and efficient neodymium iron boron magnetic cylinder motor comprising a casing, an end cover, a magnetic tile, a rotor assembly, a carbon brush and a circuit board, wherein the magnetic tile is located in the outer casing
  • the rotor assembly comprises a rotor, an armature winding, a commutator and a rotating shaft, characterized in that the magnetic tile is a magnetic cylinder made of bonded neodymium iron boron, and the magnetic cylinder is fixed against the inner wall of the outer casing, the rotor
  • the number of slots X can be divisible by half of the number of poles A of the cylinder, and the armature windings are shorted by the number of rotor slots X divided by half of the number of poles A of the cylinder to ensure that each pair of poles is between There are effective energized coils.
  • the magnetic cylinder of the present invention is magnetized in an angular interval of 360° in the number of poles A, and the number of poles is even.
  • the magnetizing method of the magnetic cylinder according to the present invention may be either direct charging or oblique charging: when the magnetic cylinder adopts oblique charging, the magnetization inclination ⁇ relative to the central axis of the magnetic cylinder is between 5° and 30°. (See Fig. 4). At the same time, the rotor corresponds to a straight groove structure; when the magnetic cylinder adopts a direct magnetization type, the rotor corresponds to a chute structure with a slope ⁇ of 5° to 30° (see Figure 9). ).
  • the neodymium iron boron magnetic cylinder is a circular magnetic cylinder, and the end portion is positioned by a notch, that is, a positioning notch/projection is provided at one end of the magnetic cylinder, and is disposed at a corresponding position on the inner wall of the outer casing.
  • the bosses/notches are positioned to fit each other when the magnetic cylinder is mounted in the housing to ensure accuracy and uniformity of positioning during magnetization and installation.
  • the number of rotor slots of the present invention is X is a number that can be divisible by half of the number of poles A, that is, the number of rotor slots X is
  • Integer multiple of A/2 which is determined by the diameter and length of the rotor, the performance requirements of the motor, and the groove fullness of the winding and the smoothness of the rotor operation. Generally, it is in the range of 3 to 20 slots, because less than 3 The groove will cause the rotor to run unevenly. If the number of slots is too large, the winding capacity of the rotor will be insufficient. The optimal number of slots is between 6 and 12 slots.
  • the number of commutator segments Y on the rotor assembly of the present invention is equal to the number of armature winding windings and the number of rotor slots X.
  • the invention can also be improved as follows: the end cover is divided into a front end cover and a rear end cover, and a carbon brush is arranged in one of the end covers, and an angle between the positive and negative carbon brushes relative to the center of the motor shaft is (2n- l) X 360° / pole number A, where n is a natural number. .
  • the first type is conventionally short-circuited by a winding method, that is, the armature windings are short-circuited after the number of slots having the same number of intervals as described above.
  • the second method is to short circuit through the circuit board: a short circuit board is arranged on the end surface of the commutator line ear, and the short circuit board is used for the wire ear every X/(A/2) number.
  • the metallized blocks on the surface short the corresponding windings.
  • the third method is to use a short-circuit carbon brush: that is, a carbon brush is set at the angle of 360° 7 poles in the end cover, and the carbon brushes are short-circuited, so that all the end caps are
  • the carbon brush is divided into two sets of carbon brushes which are respectively shorted, and each set of carbon brushes is respectively connected with the positive or negative terminals of the motor, and an effective energizing coil is also provided between each pair of magnetic poles.
  • the angle between each adjacent two carbon brushes is 90°. can. Because if the first or second method is used to solve the problem of short circuit connection between phases, in theory, only two carbon brushes are needed in the motor end cover to complete the task of motor commutation, and the clamp between the carbon brushes The angle is (2n-l) X 360° /A (n is self However, since the number of poles of the magnetic cylinder is set to an even number, the angle of the carbon brush must be unified to 180 degrees or 90 degrees.
  • the two ends of the motor casing of the present invention are respectively provided with mounting ears, and are pressed and fixed with the end cover.
  • the front end cover of the motor is provided with a socket for connecting the power of the motor.
  • the present invention has the following beneficial effects:
  • the magnetizing of the motor magnetic cylinder adopts the internal charging method to effectively prevent the occurrence of magnetic leakage, improve the efficiency of the motor, and reduce the magnetic permeability of the motor casing, which can greatly reduce the thickness of the casing and further reduce the cost; .
  • the magnetic cylinder magnetization method adopts oblique charging or the rotor adopts the inclined groove method, which can effectively reduce the pulsating torque of the motor during the rotation process, and effectively reduce the noise and vibration of the motor;
  • the structure of the present invention is simple, small in size and light in weight.
  • the preferred embodiment is about 60% smaller than the conventional permanent magnet DC motor of the same performance, and the torque is large, and the performance and efficiency are greatly improved.
  • FIG. 1 is a schematic diagram of a final assembly of a motor according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing the structure of a casing and a magnetic cylinder according to an embodiment of the present invention
  • FIG. 3 is a partially enlarged perspective view showing the structure of a casing and a magnetic cylinder according to an embodiment of the present invention
  • Figure 4 is a perspective view of a magnetic cylinder according to an embodiment of the present invention.
  • Figure 5 is a front elevational view of a magnetic cylinder according to one embodiment of the present invention
  • Figure 6 is a front elevational view of the rotor assembly without armature windings in accordance with one embodiment of the present invention
  • Figure 7 is a schematic view showing the armature winding mounted on the rotor slot in the left side view of Figure 5;
  • Figure 8 is a perspective view of the front end cover of the embodiment of the present invention with the circuit board removed;
  • Figure 9 is a front elevational view showing the rotor assembly without the armature winding according to the second embodiment of the present invention.
  • Figure 10 is a perspective view of a commutator according to a second embodiment of the present invention.
  • Figure 11 is a front elevational view showing the front end cover of the third embodiment of the present invention with the circuit board removed;
  • Figure 12 is a perspective view of a commutator of the fourth embodiment of the present invention.
  • Figure 13 is a front elevational view showing the front end cover of the fifth embodiment of the present invention with the circuit board removed.
  • a small and efficient neodymium iron boron magnetic cylinder motor as shown in FIG. 1 to FIG. 8 is one embodiment of the present invention, which comprises a casing 2, an end cover 1, a magnetic tile, a rotor assembly 4, a carbon brush 5, and a circuit board 6, wherein the rotor assembly 4 includes a rotor 41, an armature winding 42, a commutator 43 and a rotating shaft 44, wherein the magnetic tile is a cylindrical magnetic cylinder 3 made of bonded neodymium iron boron,
  • the magnetic cylinder 3 is fixed to the inner wall of the outer casing 2, and two symmetrical positioning notches 31 are provided on one end surface of the magnetic cylinder 3.
  • the outer casing 2 is made of a sheet metal material, and the coil plate is galvanized, and the inner wall of the outer casing 2 is near the end surface.
  • the inner punching boss 21 is arranged to cooperate with the positioning notch 31 on the end surface of the magnetic cylinder 3, and the two are positioned and mounted.
  • the rotor assembly 4 is mounted in the magnetic cylinder 3, and the rotor 41, the winding, and the commutator 43 are the same center of rotation, that is, the center of rotation of the motor.
  • the short-circuit condition of the armature winding 42 is illustrated by the commutator 43 wire ear number. As shown in Fig. 7, the number is equivalent to "1, 5, 9 "> "2, 6, 10", "3, respectively. The four sets of wires of 7, “", "4, 8, 12" are shorted together, and finally 12 windings are combined into four large winding combinations.
  • the end cover 1 includes a front end cover 11 and a rear end cover 12, which are made of plastic, and two symmetrical connecting hooks are disposed at the inner surface of the two end covers. Accordingly, the two ends of the outer casing 2 are also provided with matching ear shapes. The hook, through the press-fit connection of the ear hooks at both ends of the outer casing 2 and the end cover 1, completes the final installation of the motor. Circuit is provided in the front end cover 11
  • a socket is provided on the front end cover 11 of the motor for connecting to a power source.
  • the running process of the motor is as follows: Power positive - motor socket 1 pole insert (for the motor itself, regardless of the positive and negative poles) - carbon brush 5 - armature winding 42 - carbon brush 5 - motor socket 2 pole plug Chip one ⁇ ⁇ Power supply negative.
  • the current passes through the winding, it actually passes through four parallel windings at the same time.
  • the four windings simultaneously cut the magnetic lines of force formed by the four pairs of magnetic poles, and generate torque in the same direction to rotate the rotor assembly 4.
  • a winding deviates from the center of a magnetic field and the next winding enters the center of the magnetic field, the force of the previous winding is repeated, and the motor is thus continuously operated.
  • a small and efficient neodymium iron boron magnetic cylinder motor shown in FIG. 9 and FIG. 10 is the second embodiment of the present invention.
  • the magnetic cylinder 3 is magnetized by a direct charging method.
  • a short circuit board 6 is placed on the end face of the commutator 43 wire ear, The respective windings are short-circuited by the metal plating blocks on the surface of the short circuit board 6 every 4 wire ears, which is equivalent to the numbers "1, 5", "2, 6", respectively.
  • the four sets of "3., 7", "4, 8" are shorted.
  • the motor operation process is the same as in the first embodiment.
  • a small effective neodymium iron boron magnetic cylinder motor shown in FIG. 11 is the third embodiment of the present invention.
  • the magnetic cylinder 3 adopts a direct charging mode, and the magnetization inclination angle ⁇ is For 30°, the number of commutators 43 on the rotor 41 is ⁇ , the number of windings is equal to the number X of the rotor 41, both are 8, three carbon brushes 5 are arranged in the end cover 1, and the adjacent two carbon brushes 5 are 90.
  • Example 4 A small and efficient NdFeB magnetic cylinder motor front end cover 11 as shown in FIG. 12 is the fourth embodiment of the present invention.
  • the three sets of "2, 5, 8", "3, 6, 9" are shorted together.
  • a small and efficient neodymium iron boron magnetic cylinder motor front end cover 11 shown in FIG. 13 is the fifth embodiment of the present invention.
  • the magnetic cylinder 3 is charged in a direct charging manner.
  • the carbon brush 5 is evenly distributed around the motor shaft 44.
  • the armature winding 42 is short-circuited by a carbon brush 5, and the carbon brushes 5 are short-circuited, and all the carbon brushes 5 are divided into two groups.
  • the short carbon brushes 5, each set of carbon brushes 5 are respectively connected to the positive and negative terminals of the motor, so that an effective energizing coil can be realized between each pair of magnetic poles.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc Machiner (AREA)

Abstract

Moteur en CC avec du Nd-Fe-B qui comporte un logement (2), un bouchon d'extrémité (1), un patin magnétique cylindrique (3), un ensemble de rotor (4), des balais de carbone (5) et une carte de circuit (6). L'ensemble de rotor (4) comporte un rotor (41), des enroulements d'armature (42), des commutateurs (43) et un axe de rotation (44). Le patin magnétique cylindrique (3) est formé par du Nd-Fe-B et est étroitement fixé sur la paroi interne du logement (2). Le nombre de rainures du rotor (41) est un entier multiple du nombre de pôles du patin magnétique cylindrique (3).
PCT/CN2006/003619 2006-12-27 2006-12-27 Moteur en cc avec du nd-fe-b WO2008077286A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2006800561584A CN101529700B (zh) 2006-12-27 2006-12-27 钕铁硼直流电机
PCT/CN2006/003619 WO2008077286A1 (fr) 2006-12-27 2006-12-27 Moteur en cc avec du nd-fe-b

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/003619 WO2008077286A1 (fr) 2006-12-27 2006-12-27 Moteur en cc avec du nd-fe-b

Publications (1)

Publication Number Publication Date
WO2008077286A1 true WO2008077286A1 (fr) 2008-07-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/003619 WO2008077286A1 (fr) 2006-12-27 2006-12-27 Moteur en cc avec du nd-fe-b

Country Status (2)

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CN (1) CN101529700B (fr)
WO (1) WO2008077286A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106899099A (zh) * 2017-04-13 2017-06-27 东风博泽汽车系统有限公司 用于汽车冷却风扇永磁直流电机磁瓦固定的弹性磁瓦夹
CN109842259A (zh) * 2019-01-16 2019-06-04 宁波双林汽车部件股份有限公司 一种六极轻量化汽车电动座椅电机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202178689U (zh) * 2011-08-02 2012-03-28 中山大洋电机制造有限公司 一种有刷电机端盖组件结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888506A (en) * 1987-07-09 1989-12-19 Hitachi Metals, Ltd. Voice coil-type linear motor
CN2078503U (zh) * 1990-07-21 1991-06-05 包头市电机厂 钕铁硼永磁直流电机
CN2138197Y (zh) * 1992-09-14 1993-07-14 广西壮族自治区百色电机厂 直接传动式钕铁硼永磁起动机
CN1684338A (zh) * 2004-12-31 2005-10-19 邓传义 高效稀土永磁直流电机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US488506A (en) * 1892-12-20 Eyepiece for telescopes
DE102004062813A1 (de) * 2004-12-27 2006-07-06 Robert Bosch Gmbh Verfahren zur Herstellung der Läuferwicklung einer elektrischen Maschine sowie elektrische Maschine mit einer nach dem Verfahren hergestellten Läuferwicklung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888506A (en) * 1987-07-09 1989-12-19 Hitachi Metals, Ltd. Voice coil-type linear motor
CN2078503U (zh) * 1990-07-21 1991-06-05 包头市电机厂 钕铁硼永磁直流电机
CN2138197Y (zh) * 1992-09-14 1993-07-14 广西壮族自治区百色电机厂 直接传动式钕铁硼永磁起动机
CN1684338A (zh) * 2004-12-31 2005-10-19 邓传义 高效稀土永磁直流电机

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106899099A (zh) * 2017-04-13 2017-06-27 东风博泽汽车系统有限公司 用于汽车冷却风扇永磁直流电机磁瓦固定的弹性磁瓦夹
CN106899099B (zh) * 2017-04-13 2023-04-25 东风博泽汽车系统有限公司 用于汽车冷却风扇永磁直流电机磁瓦固定的弹性磁瓦夹
CN109842259A (zh) * 2019-01-16 2019-06-04 宁波双林汽车部件股份有限公司 一种六极轻量化汽车电动座椅电机
CN109842259B (zh) * 2019-01-16 2024-03-15 宁波双林汽车部件股份有限公司 一种六极轻量化汽车电动座椅电机

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Publication number Publication date
CN101529700B (zh) 2011-02-16
CN101529700A (zh) 2009-09-09

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