JP2020043641A - Power generation motor - Google Patents

Abstract

To provide a power generation motor having a form in which a rotor part and a stator part are rotatable relative to each other, having low energy loss, having large motor torque, and being suitable to generate and output generated energy.SOLUTION: The power generation motor includes a stator part 2 that is formed of wiring boards 21, 22, 23 to which a driving coil and a bearing holder 26 are fixed, and two sets of rotor parts 3, 3 which are disposed in surface facing to hold the stator part therebetween. The rotor parts each includes a shaft 4, a magnet yoke 32 that is fixed to the shaft and has a magnet 31 fixed thereto, and a rotor holder 33 that supports the magnet yoke. The rotor parts and shafts each has a structure capable of freely rotating while being held by the stator part via the bearing holder. A magnetic circuit is formed at a position where magnets of the respective rotor parts are attracted to each other. Current is caused to flow to generate a rotation magnetic field of the driving coil, whereby a rotation force is generated.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a power generation motor suitable for generating and outputting power generation energy.

2. Description of the Related Art Conventionally, a motor with a frequency generator that detects the rotation speed of a motor has been known as a power generation motor that can generate power generation energy (for example, see Patent Document 1).
JP 2001-320863 A

However, this type of conventional motor merely detects the rotational speed of the motor, does not generate power generation energy, and cannot output it as energy.
According to the present invention, the rotor and the stator are relatively rotatable, a large motor torque can be obtained with a relatively small input energy, and an energy loss is small, which is suitable for generating and generating power. An object is to provide a generator motor.

  The present invention achieves the above object, and includes a stator portion including a wiring board to which a drive coil and a bearing holder are fixed, and at least two sets of rotor portions disposed to face each other so as to sandwich the stator portion. Wherein each of the rotor portions includes a shaft serving as a rotation axis, a magnet yoke fixed to the shaft and having a driving magnet fixed thereto, and a rotor holder supporting the magnet yoke. And the shaft has a structure that can be freely rotated while being held by the stator portion via the bearing holder, forming a magnetic circuit at a position where the magnets of the rotor portions attract each other, and a rotating magnetic field is applied to the drive coil. A rotational force is generated by passing an electric current so as to generate the torque.

  Further, the present invention includes a rotor unit formed of a wiring board to which a drive coil and a bearing holder are fixed, and at least two sets of stator units arranged circumferentially opposite to the rotor unit, wherein each of the stator units includes: A shaft serving as a rotation axis, a magnet yoke fixed to the shaft and having a driving magnet fixed thereto, and a stator holder for supporting the magnet yoke, wherein each of the stator portions and the shaft includes the bearing holder. The structure is such that it can be freely rotated while being held by the rotor part, and a magnetic circuit is formed at a position where the magnets of the respective stator parts attract each other, and the motor is rotated by applying a current so that a rotating magnetic field is generated in the drive coil. It generates force.

  According to the present invention, the stator unit having the drive coil and the two sets of rotor units having the magnet can rotate freely, operate so that the relative speed does not decrease even when a load is applied, and reduce the motor torque. It can be suppressed and is suitable for the generation output of power generation energy.

1 is an overall perspective view of a power generation motor according to a first embodiment of the present invention. It is a side view of the same motor. It is a sectional side view of the same motor. It is a circuit diagram of the same motor. FIG. 3 is a diagram illustrating a positional relationship between a coil and a magnet of the motor. It is an enlarged view of the A section of FIG. It is a figure showing interaction of a coil and a magnet of the same motor. FIG. 6 is a side view of a power generation motor according to a second embodiment of the present invention. It is a sectional side view of the same motor. It is a side view of the electric power generation motor by 3rd Embodiment of this invention. It is the front view in the figure which looked through the rotor part and the stator part from the right side in FIG. 10, and looked at the left side. It is the rear view which looked at the right side by removing the support | pillar 6 from the left side in FIG.

(First embodiment)
Hereinafter, a generator motor according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3 show the configuration of the power generation motor according to the first embodiment. In these drawings, a power generation motor 1 includes a stator portion 2 and two sets of rotor portions 3 and 3 which are arranged face-to-face so as to sandwich the stator portion 2. In FIG. 1, one set of the two sets of the rotor units 3 and 3 is hidden behind the stator unit 2 and is not shown. The stator section 2 and the two sets of rotor sections 3 are rotatable relative to each other.

  In the stator section 2, three wiring boards 21, 22, 23 each having a drive coil fixed thereto, and a stator substrate 24 are integrally laminated and fixed using screws or the like. The wiring boards 21, 22, and 23 are fixed at an angle of 120 degrees so as to form a three-phase drive coil. The wiring boards 21, 22, and 23 are knot-shaped, because a circuit for controlling the energization of the drive coil is arranged on the protruding outer peripheral portion. Batteries 25a and 25b are fixed to the stator substrate 24 at positions symmetrical with respect to the central axis by 180 degrees. The illustration shows a recess in which the batteries 25a and 25b fit. The stator unit 2 includes wiring boards 21, 22, 23 and a bearing holder 26 fixed to a stator substrate 24 at a central shaft part, and is rotatably held on the shaft 4 via the bearing holder 26. . Thus, the stator 2 is also rotatable via the bearing holder 26, and the stator 2 rotates in the opposite direction to the rotors 3 and 3 when the motor rotates.

  Each of the two sets of rotor sections 3 includes a magnet yoke 32 to which a driving magnet 31 is fixed, and a rotor holder 33 for supporting the magnet yoke 32, which is fixed to a shaft 4 serving as a rotation axis. The shaft 4 is rotatably supported by bearings at both ends thereof on columns 5, 6 as fixed parts.

  It can be said that each of the rotor parts 3, 3 and the shaft 4 is held by the stator part 2 via the bearing holder 26 and can be freely rotated. A magnetic circuit is formed at a position where the magnets 31 of the rotor portions 3 and 3 attract each other, and a current is applied to drive coils of the wiring boards 21, 22, and 23 so that a rotating magnetic field is generated under the control of the control circuit to generate a rotational force. Let it. This current control is performed based on a signal obtained by detecting the rotational position of the rotor units 3 and 3. The magnet 31 has N poles and S poles alternately arranged on the circumference, for example, 18 poles.

  The wiring boards 21, 22, and 23 in the stator unit 2 include a plurality of drive coil patterns, a wiring pattern for connecting the drive coils, a power generation coil pattern for generating power, and a sensor coil pattern for detecting the position of the magnet 31. Is formed on the printed circuit board. A single-phase drive coil, a sensor coil, and a power generation coil are pattern-formed on the entire circumference on a single printed circuit board to form a single-phase drive circuit. The printed circuit boards for the number of phases of the motor are overlapped and fixed in accordance with the rotational phase position, and wiring is performed between the printed circuit boards. If a Hall element or the like is used for detecting the rotational position, the sensor coil can be omitted.

  Further, in the present embodiment, a case is provided in which a pattern of a generating coil for generating power is provided, and is referred to as a power generating motor.However, in some cases, the pattern of the generating coil is not provided, and in that case, the motor is used. . The power generation motor described in the claims includes any case, and when a power generation coil pattern for generating power is provided, the power generation motor is a power generation motor.

  FIG. 4 shows a circuit of the generator motor 1. The circuit is provided on the wiring boards 21, 22, and 23 of the stator unit 2. The circuit has a drive coil 27, a power generation coil 28, and a sensor coil 29. The drive coil 27 is star-connected in three phases, and energization of each coil is controlled according to a detection signal of the sensor coil 29 using the battery 25a or 25b as a power supply. The sensor coil 29 is for detecting a rotational phase. One end of each of the three-phase power generation coils 28 is open, the other end is connected to the midpoint of the series diode connection 201, the three series diode connections 201 are connected in parallel, and the anode side is the drive power generation output terminal 202. I have. Since one end of the generating coil 28 is open, the electromagnetic wave energy is received by the antenna, rectified and output as a voltage. Therefore, in general, when the generated energy is consumed, the motor is braked to increase the power consumption. On the other hand, in the case of this example, the motor is not braked and the current consumption is not increased.

  The drive coil 27, the power generation coil 28, and the sensor coil 29 are arranged so as to face the N pole and the S pole of the magnet 31 of the rotor section 3, and are patterned so that their respective coil outputs are added. It is arranged so that the phase is shifted by 120 degrees with respect to one cycle of change, so that it operates as a motor.

  FIGS. 5 and 6 show the positional relationship between the one-phase pattern coil 30 provided on one printed circuit board of the stator unit 2 and the magnet 31 (N, S). The pattern coil 30 includes patterns of the power generation coil 28 and the sensor coil 29 in addition to the pattern of the drive coil 27. Each pattern corresponds to a dimension substantially equal to the width of the magnet 31 in which the N and S poles are alternately arranged around the entire central axis of the substrate, and the direction of the current flowing in the adjacent coil is inward and outward. It is wired differently from the direction.

  In the drawing, the polarity of the magnet 31 facing the back side of the pattern coil 30 is shown transparently. The lines of magnetic force of the magnet 31 act on the pattern coil 30 to generate force and power generation energy according to Fleming's law. The direction of the current of the pattern coil 30 is indicated by an arrow, and the direction of rotation of the rotor unit 3 when the pattern coil 30 is energized is indicated by an arrow D.

  FIG. 7 is a cross-sectional view for explaining the interaction between the coil and the magnet of the generator motor 1. The pattern coil 30 (drive coil) of the stator unit 2 and the rotor arranged face-to-face to sandwich the pattern coil 30. The interaction of the parts 3 and 3 with the magnet 31 is shown. The magnet 31 of one rotor section 3 and the magnet 31 of the other rotor section 3 corresponding to each other with an air gap G interposed therebetween have N and S poles attracting each other, and the polarity of each magnet is , And alternately in the circumferential direction.

  The direction of the coil current supplied to the pattern coil 30 is indicated by a triangle in the front direction, and indicated by a cross in the rear direction. The line of magnetic force of the magnet is indicated by an arrow M1, the line of magnetic force of the pattern when a coil current flows is indicated by an arrow M2, and the torque direction of the pattern coil 30 at that time is indicated by an arrow T1 according to Fleming's left hand rule. Is the arrow T2. The torque direction (T1) of the pattern coil 30 and the torque direction (T2) of the rotor unit 3 are opposite to each other. Therefore, if nothing is done, the stator section 2 having the pattern coil 30 and the rotor section 3 rotate relatively in opposite directions. For example, if the rotation of the stator section 2 is stopped, the relative speed of the rotor section 3 becomes higher. The rotation speed increases so as to be the same as before.

  The operation of the generator motor 1 according to the present embodiment will be described. An electromagnetic force is generated in the pattern coil 30 by the attraction and repulsion between the N pole and the S pole of the magnet 31, and becomes a motor torque. Here, since the pattern coil 30 is arranged on the entire surface of the printed circuit board, the motor torque becomes relatively large. While a normal motor decreases its rotational speed when a load is applied, the generator motor 1 of the present embodiment has a mechanism that allows both the magnet side and the coil side to freely rotate in both directions. Therefore, when a load is applied to the motor and the rotation speed on the magnet side decreases, the rotation speed on the coil side increases, and the motor operates so that the relative speed becomes constant. Since the substrate is independent for each phase, the pattern coil is formed in one stroke over the entire surface of the substrate. This eliminates the need for through holes for coil wiring, simplifies the pattern configuration, facilitates coil impedance control, and improves wiring efficiency.

  Thus, according to the power generation motor 1 of the present embodiment, when the rotor portion 3 and the stator portion 2 are relatively rotatable and a load is applied to one of the rotor portion 3 and the stator portion 2 and the speed decreases, the other The operation is performed so that the relative speed does not decrease, and the power generation energy does not decrease in total.

  In addition, when the rotation speed increases, the resistance of the sliding portion increases, and the efficiency generally decreases.However, since both the magnet side and the coil side rotate, the relative speed is low, and the resistance of the sliding portion is low. Can be suppressed. Since the stator section 2 is formed of a printed circuit board and has no yoke forming a magnetic circuit on the coil side, there is an advantage that eddy current loss does not occur.

  Further, one of the two batteries 25a and 25b fixed to the stator substrate 24 of the stator unit 2 is a driving battery, and the other is a charging battery. When the voltage of the battery on the driving side falls below a certain level, the driving is switched to the other battery, and the battery that was the driving side until now becomes the charging side. Thereafter, when the voltage of the battery on the driving side falls below a certain level, the battery returns to the original state. Thus, the batteries 25a and 25b alternately repeat charging and discharging.

(Second embodiment)
8 and 9 show a generator motor 1 according to a second embodiment of the present invention. The power generation motor 1 according to the second embodiment includes a drive block 11 and a power generation block 12 so that driving and power generation can be shared. Each of the drive block 11 and the power generation block 12 has the same configuration as the power generation motor 1 according to the first embodiment described above. The drive block 11 and the power generation block 12 are connected by one common shaft 4, and the rotational driving force generated by the rotor unit 3 of the drive block 11 is transmitted to the rotor unit 3 of the power generation block 12 via the shaft 4. You. Each rotor holder 33 of each block 11, 12 is fixed to the shaft 4.

  In the power generation motor 1 according to the second embodiment, it is assumed that the stator unit 2 of the power generation block 12 stops rotating and extracts power generation energy. In this case, the driving block 11 includes two batteries (driving and charging) as in the first embodiment, and the power generation block 12 does not need to include a battery. The rotational driving force of the drive block 11 is transmitted to the rotor unit 3 of the power generation block 12 via the shaft 4, and the rotor unit 3 rotates, and the magnet 31 is fixed to the rotor unit 3. When the portion 2 is fixed, that is, when the rotation is stopped, an induced electromotive force is generated in the coil of the stator portion 2 and the generated energy can be taken out.

  Instead of the power generation block 12 in the second embodiment, another generator such as an alternator can be used. In that case, the generator may be coupled to the shaft 4 via a coupling or the like.

(Third embodiment)
10 to 12 show a generator motor 1 according to a third embodiment of the present invention. The generator motor 1 according to the third embodiment is obtained by adding a configuration for taking out the generated energy to the outside from the generator motor 1 according to the first embodiment. For this purpose, an outer edge ring 240 is provided on the outer periphery of the stator substrate 24 of the stator section 2, and a plurality of magnets 241 are fixed to the outer edge ring 240 so that N poles and S poles are alternately arranged on the circumference. Further, a ring-shaped substrate 243 in which a plurality of coils 242 are arranged on the circumference is attached to the fixed-side support 6. The magnet 241 and the coil 242 are arranged so as to face each other in the shaft 4 axis direction. The outer ring 240 and the stator substrate 24 may be the same. Depending on the configuration (positional relationship) of the coil 242 and the magnet 241, the output of the coil 242 can be output as a two-phase or three-phase alternating current.

  With this configuration, when the magnet 241 of the stator section 2 rotates, a magnetic field change occurs, and the magnetic field change generates an induced electromotive force in the fixed-side coil 242, so that power generation energy can be extracted.

(Fourth embodiment)
In the power generation motor 1 of the present invention, the stator section 2 and the rotor section 3 may have a reverse relationship. This is called a fourth embodiment. In this case, the rotor unit includes a rotor unit formed of a wiring board to which the drive coil and the bearing holder are fixed, and at least two sets of stator units are disposed circumferentially opposite to the rotor unit. Shaft, a magnet yoke fixed to the shaft and having a driving magnet fixed thereto, and a stator holder for supporting the magnet yoke. Each stator portion and the shaft are freely held by the rotor portion via a bearing holder. In this structure, a magnetic circuit is formed at a position where the magnets of each stator unit attract each other, and a rotating force is generated by applying a current to the drive coil so as to generate a rotating magnetic field.

(Modification)
The present invention is not limited to the configuration of the above embodiment, and various modifications are possible. For example, instead of the rotor portion and the stator portion facing each other in the axial direction as in the above-described embodiment, a stator portion formed of a coil substrate formed of a non-magnetic material in a cylindrical shape has an outer peripheral side and an inner peripheral side. However, even if the rotor and the stator have a structure in which the rotor and the stator have a magnet opposed to each other, the rotor and the stator can rotate. Regardless of whether the motor in which the rotor and the stator rotate in the reverse direction is a brushless motor or a brush motor, a current is applied to the stator through a contact for the + electrode and a contact for the-electrode. By supplying power, power can be supplied without a battery.

REFERENCE SIGNS LIST 1 power generation motor 11 drive block 12 power generation block 2 stator portion 21, 22, 23 wiring board 24 stator substrate 240 outer edge ring 241 magnet 242 coil 243 ring-shaped substrate 25 a, 25 b battery 26 bearing holder 27 drive coil 28 power generation coil 29 sensor coil 3 Rotor part 30 Pattern coil 31 Magnet (N, S)
32 Magnet yoke 33 Rotor holder 4 Shaft 5, 6 Prop

Claims (7)

A stator portion comprising a wiring board to which the drive coil and the bearing holder are fixed,
And at least two sets of rotor portions arranged face-to-face to sandwich the stator portion,
Each of the rotor units includes a shaft serving as a rotation axis, a magnet yoke fixed to the shaft, and a driving magnet fixed thereto, and a rotor holder supporting the magnet yoke,
The rotor unit and the shaft are configured to be freely rotatable while being held by the stator unit via the bearing holder, and form a magnetic circuit at a position where the magnet of each rotor unit attracts, and the drive coil A power generation motor characterized in that a rotating force is generated by passing a current so that a rotating magnetic field is generated in the motor. Both ends of the shaft are supported by bearings of fixed parts such as columns,
The generator motor according to claim 1, wherein the stator portion is also rotatable via the bearing holder, and the stator portion rotates in a direction opposite to the rotor portion when the motor rotates.   A printed circuit board on which a pattern of the plurality of drive coils, a wiring pattern for connecting the drive coils, a pattern of a power generation coil for generating power, and a pattern of a sensor coil for detecting the position of the magnet are formed; The power generation motor according to claim 1, wherein: A single-phase drive coil, a sensor coil, and a power generation coil are formed in a pattern on the entire periphery of one printed circuit board to form a single-phase drive circuit,
4. The stator according to claim 3, wherein the printed circuit boards for the number of phases of the motor are overlapped and fixed in accordance with their rotational phase positions, and the printed circuit boards are wired to form the stator portion. Generator motor.   Two secondary batteries are arranged in the stator section at positions symmetrical with respect to the axis of rotation, one of the batteries drives a motor, and the other battery is charged with power generated by the power generation coil. The power generation motor according to claim 3.   When the voltage of the battery on the driving side falls below a certain level, the two secondary batteries switch the driving to the other battery, the battery on the driving side becomes charged, and the voltage of the other battery becomes constant. 6. The power generation motor according to claim 5, wherein the driving battery is switched when the voltage becomes lower than the level, and charging and discharging are alternately repeated. A rotor portion comprising a wiring board to which the drive coil and the bearing holder are fixed,
And at least two sets of stator portions arranged circumferentially opposite to the rotor portion,
Each of the stator portions includes a shaft serving as a rotation axis, a magnet yoke fixed to the shaft, and a driving magnet fixed thereto, and a stator holder supporting the magnet yoke,
The stator and the shaft are held by the rotor via the bearing holder and can be freely rotated, and form a magnetic circuit at a position where the magnet of each stator attracts, and the drive coil A power generation motor characterized in that a rotating force is generated by passing a current so that a rotating magnetic field is generated in the motor.

Images