JP3099864U - Series two-phase full-wave brushless DC motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a series type two-phase full-wave brushless DC motor capable of increasing the rated power of a motor, saving space inside the motor, and reducing the manufacturing cost of the motor.
A first driving element is connected to a power supply terminal to form a first voltage, and is connected to a first inductive element and a first coil. The first driving element is connected in series with the second driving element and the second inductive element, and outputs a second voltage to the second driving element. The conduction direction of the current of the first coil is controlled based on the Hall signal of the first inductive element using the first voltage, and full-wave excitation is generated in the first coil. At the same time, the second driving element is connected to the second inductive element and the second coil, and the conduction direction of the current of the second coil based on the Hall signal of the second inductive element using the second voltage provided by the first driving element. To generate a full-wave excitation in the second coil. The first drive element is serially connected to the second drive element, and the first coil and the second coil excite synchronously.
[Selection diagram] Fig. 1

Description

The present invention relates to a series two-phase full-wave brushless DC motor, and more particularly to a series two-phase full-wave brushless DC motor that can control a series two-phase full-wave brushless DC motor by using both induction driving elements. It is related to.

As a conventional single-phase full-wave brushless DC motor, as shown in FIG. 6, the conventional single-phase full-wave brushless DC motor includes a single-phase full-wave drive circuit 10. A driving element 11, an inductive element 12, and a coil 13 are included. The driving element 11 is electrically connected to the inductive element 12 and the coil 13, and the direction of conduction of the current of the coil 13 can be controlled by the Hall signal of the inductive element 12. Some are formed to be excited to drive the rotation of the rotor.

に お い て In the conventional single-phase full-wave brushless DC motor as described above, the rate of change of the rated power / current and volume of the drive element 11 is non-linear. In other words, when the rated power of the driving element 11 increases by a factor of one, the volume of the driving element 11 also increases by a factor of one or more. As described above, when the rated power of the driving element 11 is increased, there is a problem that the driving element 11 occupies an excessively large space inside the motor. In addition, the manufacturing cost of the high rated power drive element is also considerably higher, exceeding the manufacturing cost of the two small rated power drive elements, and thus the manufacturing cost of the high rated power drive element is high. There was a problem. Further, when the rated power of the drive element 11 needs to be increased in order to save the internal space of the motor and the manufacturing cost, simply adding another induction drive element having a small rated power requires only an increase in the induction drive element 11. The rated power can be increased, and the manufacturing cost can be kept low. At the same time, the single-phase full-wave coil can be divided into two-phase full-wave coils and applied to drive both driving elements. Since the volume of the two-phase full-wave coil is the same as the volume of the single-phase full-wave coil during manufacturing, the volume of the motor is not increased in the two-phase full-wave coil.

The present invention has been devised in view of such a problem, and its purpose is to control a series two-phase full-wave coil using two small-rated inductive driving elements. In other words, two small rated power driving elements and a series two-phase full-wave coil are replaced with a large rated power inductive element and a single-phase full-wave coil to replace a small rated power driving element. Due to its small volume and low cost characteristics, the motor's rated power can be increased, the space inside the motor can be saved, the manufacturing cost of the motor can be kept low, and the demand for use Series two-phase full-wave brushless DC that can increase the number of driving elements with a small rated power (not more than the number of magnetic poles of the motor) depending on the characteristics It is intended to provide a Ta.

A first object of the present invention is to control a series two-phase full-wave coil using two driving elements, thereby increasing the rated power of the motor. It is intended to provide a motor.

The second object of the present invention is to control a series two-phase full-wave coil by using two driving elements, so that the driving elements have characteristics of small volume and low cost. Therefore, it is an object of the present invention to provide a series two-phase full-wave brushless DC motor that can save the space inside the motor and keep the manufacturing cost of the motor low.

To achieve the above object, a series two-phase full-wave brushless DC motor according to the present invention is as follows. That is,
It comprises a rotor, a stator, a first coil, a second coil, a first inductive element, a second inductive element, a first drive element and a second drive element. The rotor is formed to have at least one set of N and S magnetic poles. The stator is provided with magnetic poles corresponding to at least one set of rotor magnetic poles. The first coil is wound around the stator. The second coil is wound around the stator, and the second coil is connected in series to the first coil. The first inductive element can generate a first Hall signal by being used to detect the magnetic pole of the rotor. The second inductive element can generate a second Hall signal by being used to detect the magnetic pole of the rotor. The first driving element is connected to the power source to obtain the first voltage, and simultaneously outputs the second voltage, and is connected to the first coil and the first inductive element, and the first driving element utilizes the first voltage. By controlling the conduction direction of the current of the first coil based on the first Hall signal of the first inductive element, full-wave excitation can be generated. The second drive element is serially connected to the first drive element, and the second voltage provided by the first drive element is input, and the second drive element is again connected to the second coil and the second inductive element, and the second drive element The element can generate full-wave excitation by controlling the conduction direction of the current of the second coil based on the second Hall signal of the second inductive element using the second voltage. The first coil and the second coil synchronously perform full-wave excitation, thereby driving the rotation of the rotor.

In the serial two-phase full-wave brushless DC motor according to the present invention, a circuit board is provided below the stator, and the first and second inductive elements may be fixed to the circuit board. In addition, the first and second inductive elements may be formed to have a phase difference of 0 °, 90 °, 180 °, and 270 ° for detecting and detecting the magnetic pole of the rotor. When the phase difference for detecting the magnetic poles of the rotor is 90 ° and 270 °, the first coil and the second coil are controlled by controlling the current conduction directions of the first coil and the second coil in opposite directions. It can also be formed to have the opposite excitation direction. Further, when the phase difference for detecting the magnetic pole of the rotor is 0 ° and 180 °, by controlling the conduction direction of the current of the first coil and the second coil in the same direction, the first coil and the second coil have It can also be formed to have a matching excitation direction.

The series two-phase brushless DC motor according to the present invention includes a rotor, a stator, a first coil, a second coil, a first induction driving element, and a second induction driving element. The rotor is formed to have at least one set of N and S magnetic poles. The stator is provided with magnetic poles corresponding to at least one set of rotor magnetic poles. The first coil is wound around the stator. The second coil is wound around the stator and the second coil is connected in series to the first coil. The first inductive driving element is connected to the power source to obtain the first voltage, and simultaneously outputs the second voltage, and is connected to the first coil, and the first inductive driving element utilizes the first voltage to perform the first inductive driving. By controlling the conduction direction of the current of the first coil based on the first Hall signal of the driving element, full-wave excitation can be generated. The second induction driving element is connected in series to the first induction driving element, and a second voltage provided by the first induction driving element is input, and the second induction driving element is connected again to the second coil, and the second induction driving is performed. The element can generate full-wave excitation by controlling the conduction direction of the current of the second coil based on the second Hall signal of the second induction driving element using the second voltage. In that, the first induction drive element and the second induction drive element operate synchronously, so that the first coil and the second coil perform synchronous full-wave excitation to drive the rotation of the rotor. Can be.

In the serial two-phase full-wave brushless DC motor according to the present invention, a circuit board is provided below the stator, and the first induction driving element and the second induction driving element may be fixed to the circuit board. In addition, the first and second induction driving elements may be formed to have a phase difference of 0 °, 90 °, 180 °, and 270 ° for detecting and detecting the magnetic poles of the rotor. When the phase difference for detecting the magnetic poles of the rotor is 90 ° and 270 °, the first coil and the second coil are controlled by controlling the current conduction directions of the first coil and the second coil in opposite directions. It can also be formed to have the opposite excitation direction. Further, when the phase difference for detecting the magnetic pole of the rotor is 0 ° and 180 °, by controlling the conduction direction of the current of the first coil and the second coil in the same direction, the first coil and the second coil have It can also be formed to have a matching excitation direction.

According to the series two-phase full-wave brushless DC motor of the present invention, it is possible to increase the rated power of the motor by controlling the series two-phase full-wave coil using two driving elements. There are advantages.

According to the series two-phase full-wave brushless DC motor of the present invention, the driving element is small in volume and low in cost by controlling the series two-phase full-wave coil using two driving elements. Due to the characteristics, there is an advantage that the space inside the motor can be saved and the manufacturing cost of the motor can be reduced.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram of a serial two-phase full-wave brushless DC motor according to the first embodiment of the present invention, and FIG. 2 is a cross-sectional view of a serial two-phase full-wave brushless DC motor according to the first embodiment of the present invention.

1 and 2, a serial two-phase full-wave driving circuit 20 is formed in the serial two-phase full-wave brushless DC motor 2 according to the embodiment of the present invention. The series two-phase full-wave drive circuit 20 includes a first drive element 21, a second drive element 21a, a first inductive element 22, a second inductive element 22a, a first coil 23, and a second coil 23a.

Referring again to FIG. 1, the first driving element 21 and the second driving element 21a are preferably formed to have the same rated power. The first coil 23 and the second coil 23a are preferably formed to have the same resistance. The first driving element 21 is serially connected to the second driving element 21a.

Referring again to FIG. 2, the series two-phase full-wave brushless DC motor 2 includes a stator 2a, a circuit board 2b, and a rotor 2c. The stator 2a is used to wind the first coil 23 and the second coil 23a together to form a two-phase coil set. The circuit board 2b is provided below the stator 2a, and a series two-phase full-wave drive circuit 20 is provided above the stator 2a. The first drive element 21, the second drive element 21a, and the first inductive element 22 are provided on the circuit board 2b. And the second inductive element 22a. The first inductive element 22 and the second inductive element 22a can output a Hall signal to the first drive element 21 and the second drive element 21a, respectively, by inducing and detecting the magnetic pole of the rotor 2c.

Referring again to FIG. 2, since the first inductive element 22 and the second inductive element 22 a are installed at, for example, different positions on the circuit board 2 b, the phase difference for inducing and detecting the magnetic pole of the rotor 2 c is 0 °, 90 °. , 180 ° and 270 °.

Referring again to FIG. 1, the phase differences for detecting the magnetic poles of the rotor 2c of the first inductive element 22 and the second inductive element 22a are 90 ° and 270 °. The arrangement of the two terminals OUT1 and OUT2 of the first drive element 21 is formed so as to correspond to the arrangement of the two terminals OUT1 and OUT2 of the second drive element 21a, and the first coil 23 and the second coil 23a Is controlled so that the conduction directions of the currents coincide with each other, the first coil 23 and the second coil 23a are formed to have the same excitation direction, so that the rotor 2c can be driven.

Referring again to FIG. 1, the first driving elements 21 may be jointly connected to the power supply Vcc to obtain the first voltage V1. The first drive element 21 is connected to the first inductive element 22 and the first coil 23, and the first drive element 21 controls the current conduction direction of the first coil 23 based on the Hall signal of the first inductive element 22. In the first coil 23, full-wave excitation is generated by the first voltage V1. Further, the first driving element 21 provides the second voltage V2 and outputs the same to the second driving element 21a. The second drive element 21a is connected to the second inductive element 22a and the second coil 23a, and the second drive element 21a controls the conduction direction of the current of the second coil 23a based on the Hall signal of the second inductive element 22a. The second coil 23a generates full-wave excitation by the second voltage V2. In this manner, the power supply Vcc can drive the rotation of the rotor 2c by providing the first voltage V1 and the second voltage V2 to the serial two-phase full-wave drive circuit 20.

When the motor is rotated, the first inductive element 22 and the second inductive element 22a jointly induce and detect the same magnetic pole (N pole or S pole) of the rotor 2c. Thereby, the first drive element 21 and the second drive element 21a determine the conducting direction of the alternating current of the first coil 23 and the second coil 23a, so that the first coil 23 and the second coil 23a are alternately conducted. It is formed so that.

The serial two-phase full-wave drive circuit 20 provides the first voltage V1 and the second voltage V2 to the first coil 23 and the second coil 23a via the first drive element 21 and the second drive element 21a, thereby achieving synchronization. Since the alternating current can be conducted, the rated power of the motor can be increased. For example, when the rated power of a single-phase full-wave brushless DC motor is 500 mW and the rated voltage is 12 V, according to the two-phase full-wave brushless DC motor of the present invention, the rated power is 1000 mW and the rated voltage is 24 V. Can be raised.

FIG. 3 is a circuit diagram of a series two-phase full-wave brushless DC motor according to Embodiment 2 of the present invention.

Referring to FIG. 3, the series two-phase full-wave brushless DC motor of the second embodiment of the present invention is installed so as to correspond to the serial two-phase full-wave brushless DC motor of the first embodiment. In order to make it easy to understand the difference between the two, the same parts are marked with the same reference numerals. In addition, since the technical contents of a part of the second embodiment are described in the description contents of the first embodiment, they will not be described again in detail for reference.

Referring to FIG. 3, the series two-phase full-wave driving circuit 20 according to the second embodiment of the present invention includes a first induction driving element 211, a second induction driving element 211a, a first coil 23, and a second coil 23a. . Compared with the first embodiment of the present invention, the first and second induction driving elements 211 and 211a of the second embodiment of the present invention are obtained by incorporating one inductive element into one driving element.

FIG. 4 is a circuit diagram of a series two-phase full-wave brushless DC motor according to Embodiment 3 of the present invention.

Referring to FIG. 4, the serial two-phase full-wave brushless DC motor according to the third embodiment of the present invention is installed to correspond to the serial two-phase full-wave brushless DC motor according to the first embodiment. In order to make it easy to understand the difference between the two, the same parts are marked with the same reference numerals. The technical content of a part of the third embodiment is described in the description of the first embodiment, and thus will not be described again in detail for reference.

Referring again to FIG. 4, the phase differences for detecting the magnetic poles of the rotor 2c of the first inductive element 22 and the second inductive element 22a in Embodiment 3 of the present invention are 90 ° and 270 °. Compared to the first embodiment, the connection between the second drive element 212a and the second coil 23a of the third embodiment of the present invention is formed to be opposite to the connection between the first drive element 212 and the second coil 23. You. That is, the arrangement of the two terminals OUT1 and OUT2 of the first drive element 212 is formed to be opposite to the arrangement of the two terminals OUT1 and OUT2 of the second drive element 212a, and the first coil 23 and the second By controlling the current conduction direction of the coil 23a to be opposite, the first coil 23 and the second coil 23a are formed so as to have opposite excitation directions, so that the rotor 2c can be driven. .

FIG. 5 is a circuit diagram of a series two-phase full-wave brushless DC motor according to Embodiment 4 of the present invention.

Referring to FIG. 5, the series two-phase full-wave brushless DC motor according to the fourth embodiment of the present invention is installed so as to correspond to the series two-phase full-wave brushless DC motor according to the first embodiment. In order to make it easy to understand the difference between the two, the same parts are marked with the same reference numerals. In addition, since the technical contents of a part of the fourth embodiment are described in the description contents of the first embodiment, they will not be described again in detail for reference.

Referring to FIG. 5, the series two-phase full-wave driving circuit 20 according to the fourth embodiment of the present invention includes a first induction driving element 213, a second induction driving element 213a, a first coil 23, and a second coil 23a. . Compared with the third embodiment of the present invention, the first and second inductive driving elements 213 and 213a of the fourth embodiment of the present invention incorporate one inductive element into one driving element.

As described above, according to the conventional single-phase full-wave brushless DC motor shown in FIG. 6, when increasing the rated power of the motor, there is a problem that the volume of the motor increases and the manufacturing cost increases. According to the invented series two-phase full-wave brushless DC motor, by adding the driving element 21a, the space inside the motor can be saved and the manufacturing cost of the motor can be reduced.

The invention may be implemented in other ways without departing from its spirit and essential characteristics. Accordingly, the preferred embodiments described herein are illustrative and not limiting.

FIG. 2 is a circuit diagram of the series two-phase full-wave brushless DC motor according to the first embodiment of the present invention. FIG. 2 is a sectional view of the serial two-phase full-wave brushless DC motor according to the first embodiment of the present invention. FIG. 4 is a circuit diagram of a series two-phase full-wave brushless DC motor according to a second embodiment of the present invention. FIG. 4 is a circuit diagram of a series two-phase full-wave brushless DC motor according to a third embodiment of the present invention. FIG. 4 is a circuit diagram of a series two-phase full-wave brushless DC motor according to a fourth embodiment of the present invention. It is a circuit diagram by the conventional single phase full wave brushless DC motor.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 10 Single-phase full-wave drive circuit 11 Drive element 12 Inductive element 13 Coil 2 Series two-phase full-wave brushless DC motor 2a Stator 2b Circuit board 2c Rotor 20 Series two-phase full-wave drive circuit 21 First drive element 21a Second drive Element 211 First induction driving element 211a Second induction driving element 212 First induction element 212a Second induction element 213 First induction driving element 213a Second induction driving element 22 First induction element 22a Second induction element 23 First coil 23a Second coil

Claims (10)

Rotor (2c), stator (2a), first coil (23), second coil (23a), first inductive element (22), second inductive element (22a), first drive element (21) and second A series type two-phase full-wave brushless DC motor including a driving element (21a), wherein a rotor (2c) is formed to have at least one set of N and S magnetic poles, and a stator (2a) is formed. At least one set of magnetic poles corresponding to the magnetic poles of the rotor (2c) is provided, the first coil (23) is wound around the stator (2a), and the second coil (23a) is wound around the stator (2a). The two coils (23a) are connected in series to the first coil (23), and the first inductive element (22) is used to detect the magnetic pole of the rotor (2c) to generate a first Hall signal. By using the second inductive element (22a) to detect the magnetic pole of the rotor (2c), a second Hall signal can be generated, and the first drive element (21) is connected to a power supply. At the same time as obtaining the first voltage, and outputting the second voltage, and connected to the first coil (23) and the first inductive element (22), and the first driving element (21) utilizes the first voltage. By controlling the conduction direction of the current of the first coil (23) based on the first Hall signal of the first inductive element (22), full-wave excitation can be generated, and the second drive element (21a) The second driving element (21a) is again connected to the second coil (23a) and the second inductive element while being connected in series with the first driving element (21) and receiving a second voltage provided by the first driving element (21). (22a) and the second driving element (2 a) controlling the conduction direction of the current of the second coil (23a) based on the second Hall signal of the second inductive element (22a) using the second voltage to generate full-wave excitation; A series type wherein the first coil (23) and the second coil (23a) can drive the rotation of the rotor (2c) by exciting the full-wave synchronously. Two-phase full-wave brushless DC motor. A circuit board (2b) is provided below the stator (2a), and the first inductive element (22) and the second inductive element (22a) are fixed to the circuit board (2b). 2. The series two-phase full-wave brushless DC motor according to 1. The first inductive element (22) and the second inductive element (22a) are formed so as to have a phase difference of 0 °, 90 °, 180 ° and 270 ° for detecting and detecting the magnetic pole of the rotor (2c). The series two-phase full-wave brushless DC motor according to claim 2, characterized in that: When the phase difference for detecting the magnetic pole of the rotor (2c) is 90 ° and 270 °, the first coil (23) and the second coil (23a) are controlled in the opposite directions so that the first coil (23) and the second coil (23a) conduct in opposite directions. The series two-phase full-wave brushless DC motor according to claim 3, wherein the coil (23) and the second coil (23a) are formed to have opposite excitation directions. When the phase difference for detecting the magnetic pole of the rotor (2c) is 0 ° and 180 °, the first coil (23) and the second coil (23a) are controlled in the same direction to conduct the current. The series two-phase full-wave brushless DC motor according to claim 3, wherein the coil (23) and the second coil (23a) are formed to have the same excitation direction. A two-phase two-phase system composed of a rotor (2c), a stator (2a), a first coil (23), a second coil (23a), a first induction drive element (211), and a second induction drive element (211a). A brushless DC motor, wherein the rotor (2c) is formed to have at least one set of N and S magnetic poles, and the stator (2a) has magnetic poles corresponding to at least one set of magnetic poles of the rotor (2c). The first coil (23) is wound around the stator (2a), the second coil (23a) is wound around the stator (2a), and the second coil (23a) is connected in series to the first coil (23). The first inductive driving element (211) is connected to a power source to obtain a first voltage, and at the same time, outputs a second voltage, and is connected to a first coil (23) to perform first inductive driving. The child (211) generates a full-wave excitation by controlling the conduction direction of the current of the first coil (23) based on the first Hall signal of the first induction driving element (211) using the first voltage. The second inductive drive element (211a) is connected in series with the first inductive drive element (211), and the second voltage provided by the first inductive drive element (211) is input to the second inductive drive element (211a). The element (211a) is again connected to the second coil (23a), and the second induction driving element (211a) uses the second voltage to generate the second coil based on the second Hall signal of the second induction driving element (211a). By controlling the conduction direction of the current of (23a), full-wave excitation can be generated, in which the first induction driving element (211) and the second induction driving element (211a) operate synchronously. By that, the first coil ( 3) and a second coil (23a) by performing a full-wave excitation to synchronous, serial type two-phase full-wave brushless DC motor rotor (2c) is equal to or capable of driving the rotating. A circuit board (2b) is provided below the stator (2a), and the first induction driving element (211) and the second induction driving element (211a) are fixed to the circuit board (2b). A two-phase full-wave brushless DC motor according to claim 6. The phase difference detected and induced by the first induction driving element (211) and the second induction driving element (211a) of the magnetic pole of the rotor (2c) is 0 °, 90 °, 180 °, and 270 °. The series two-phase full-wave brushless DC motor according to claim 7, wherein: When the phase difference for detecting the magnetic pole of the rotor (2c) is 90 ° and 270 °, the first coil (23) and the second coil (23a) are controlled in the opposite directions so that the first coil (23) and the second coil (23a) conduct in opposite directions. The series two-phase full-wave brushless DC motor according to claim 8, wherein the coil (23) and the second coil (23a) are formed to have opposite excitation directions. When the phase difference for detecting the magnetic pole of the rotor (2c) is 0 ° and 180 °, the first coil (23) and the second coil (23a) are controlled in the same direction to conduct the current. The series two-phase full-wave brushless DC motor according to claim 9, wherein the coil (23) and the second coil (23a) are formed to have the same excitation direction.

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