CN102361380B - Transverse-radial flux structure brushless compound permanent magnet motor - Google Patents

Abstract

The invention relates to a transverse-radial magnetic flux structure brushless combined type permanent magnet motor and belongs to the technical field of permanent magnet motors. The transverse-radial magnetic flux structure brushless combined type permanent magnet motor solves the problems that the whole system has large volume, a complex structure and limited performance, cannot effectively output power, and is high in cost because the engines in the conventional series, parallel and series-parallel combined type drive devices cannot be matched with other parts of the system simply and efficiently. The transverse-radial magnetic flux structure brushless combined type permanent magnet motor comprises a shell and end covers, wherein the end covers are arranged at two ends of the shell; a transverse magnetic flux double-rotor motor and a radial torque adjusting motor are arranged in the shell in parallel; power is supplied through two motors with different frequency; variable torque difference can be provided by a stator winding for adjusting the radial torque adjusting motor; and variable rotating speed difference can be provided through a stator winding for adjusting the transverse magnetic flux double-rotor motor and the stator winding for adjusting the radial torque adjusting motor simultaneously. Constantly-changing rotating speed and torque are provided by the vehicle engine according to the actual road condition requirement.

Description

Transverse-radial flux structure brushless compound permanent magnet motor

technical field

The invention relates to a brushless composite permanent magnet motor with a transverse-radial magnetic flux structure, and belongs to the technical field of permanent magnet motors.

Background technique

The fuel consumption and exhaust pollution of traditional internal combustion engine vehicles are hot issues of worldwide concern. In contrast, electric vehicles have the characteristics of low energy consumption and low emissions. However, as one of the key components of electric vehicles, on-board batteries still have problems such as low energy density, short life, and high price, which makes the cost performance of electric vehicles far from that of traditional internal combustion engine vehicles. In order to solve this problem, the hybrid electric vehicle, which combines the advantages of internal combustion engine vehicles and electric vehicles, has become a hotspot for the development of new vehicles and has developed rapidly.

The existing tandem driving device of hybrid electric vehicles is characterized by: the engine is not affected by the driving conditions of the vehicle, it can always run in the best working area, and the engine with less power can be selected, but it requires the generator and The motor is powerful enough. In this structure, the output of the engine will be fully converted into electrical energy and then converted into mechanical energy to drive the car, which is limited by the low efficiency of electromechanical energy conversion and battery charging and discharging, making the utilization rate of fuel energy relatively low. In contrast, the parallel drive device has the characteristics of high energy utilization, but its engine will be affected by the driving conditions of the vehicle, so it is not suitable for frequently changing driving conditions. In addition, compared with the series structure, the parallel structure also requires more complex transmission devices, power compound devices and transmission mechanisms. Different from the above two driving methods, the hybrid driving device uses two motors to simultaneously realize the torque and speed control of the engine, and can improve the efficiency of the engine and reduce emissions. To realize power distribution, the structure is complex and the cost is high. Therefore, in the above-mentioned driving device, there is a problem that the engine and other components of the system cannot cooperate simply and efficiently, so that the whole system has problems such as bulky, complex structure, high cost, and limited performance, and cannot effectively output power.

Contents of the invention

The present invention aims to solve the problem that the engine and other system components in the existing series, parallel and hybrid drive devices cannot cooperate simply and efficiently, so that the whole system is bulky, complex in structure, high in cost and limited in performance, and cannot be effective. To solve the problem of power output, the present invention provides a brushless compound permanent magnet motor with a transverse-radial flux structure.

The brushless compound permanent magnet motor with transverse and radial magnetic flux structure of the present invention comprises a housing and end covers, end covers are arranged at both ends of the housing, and a transverse magnetic flux double-rotor motor and a radial motor are arranged side by side in the housing. Direct torque adjustment motor, the transverse flux double rotor motor includes a first stator, a transverse flux rotor, a first permanent magnet rotor, a permanent magnet rotor output shaft and a transverse flux rotor output shaft, the radial torque The regulating motor includes a second stator and a second permanent magnet rotor, and the output shaft of the transverse flux rotor serves as the rotor shaft of the radial torque regulating motor at the same time,

The second stator of the radial torque regulating motor is fixed on the inner wall of the casing, the second permanent magnet rotor is fixed on the output shaft of the transverse flux rotor, and the radial direction between the second stator and the second permanent magnet rotor There is an air gap in the direction, and the width of the air gap is L3; the second stator is composed of a second stator winding and a second stator core;

The first stator of the transverse flux dual-rotor motor is fixed on the inner side wall of the casing, the first permanent magnet rotor is fixed on the output shaft of the permanent magnet rotor, and the transverse flux rotor is located between the first stator and the first permanent magnet rotor. Between the rotors, the transverse flux rotor is fixed on the output shaft of the transverse flux rotor, and the transverse flux rotor is rotatably connected to the output shaft of the permanent magnet rotor through a bearing; there is a an air gap, the air gap width is L1; there is an air gap between the transverse flux rotor and the first permanent magnet rotor, and the air gap width is L2;

The first stator is composed of m phase units with the same structure closely arranged in the axial direction; each phase unit is composed of the first stator core and the first stator winding; the cross section of each first stator core is "concave ", the "concave"-shaped opening faces the transverse flux rotor, and the first stator winding is embedded in the "concave"-shaped opening;

The transverse flux rotor is composed of a support part and m transverse flux units, each transverse flux unit contains n pairs of transverse flux rotor teeth, and all transverse flux rotor teeth are fixed on the support part; m transverse flux units along are uniformly arranged in the axial direction, and each transverse flux unit corresponds to a phase unit in the first stator,

The n pairs of transverse flux rotor teeth of each transverse flux unit are divided into two parallel left and right rows, and each row of transverse flux rotor teeth is evenly distributed along the circumference to form a circular ring; between two adjacent transverse flux rotor teeth in the same row The spacing of the transverse flux rotor is d, and the two transverse flux rotor teeth corresponding to the positions in the two rows are located on the same generatrix of the transverse flux rotor and form a pair of poles of the transverse flux rotor; two teeth in each transverse flux unit The two rings formed by the row of transverse magnetic flux rotor teeth along the circumference are respectively aligned with the protruding parts on both sides of the "concave" opening of the first stator core corresponding to the position;

The space angle occupied by two adjacent transverse flux rotor tooth spacing d in the same column that is staggered by 1/m times in the circumferential direction between adjacent transverse flux units;

The first permanent magnet rotor is composed of a first permanent magnet rotor core and m first permanent magnet units. The outer circumferential surface of the first permanent magnet rotor core is provided with m first permanent magnet units, and the m first permanent magnet units are along the distributed evenly in the axial direction, and each first permanent magnet unit corresponds to a transverse magnetic flux unit,

Each first permanent magnet unit is provided with m first rotor cores and n pairs of first rotor permanent magnets, and the n pairs of first rotor permanent magnets are divided into parallel left and right rows, and the first rotor permanent magnets in each row are The circumference is evenly distributed to form a ring shape; the first rotor permanent magnets corresponding to the positions in the two rows are located on the same busbar of the first permanent magnet rotor, and form a pair of poles of the first permanent magnet rotor; each first permanent magnet The two rows of first rotor permanent magnets in the unit are aligned with the two rings formed along the circumference of the two rows of transverse flux rotor teeth in the corresponding transverse flux unit. The first rotor The shape and size of the top surface of the permanent magnet and the tooth bottom surface of the transverse flux rotor are the same; the first rotor permanent magnet is magnetized along the radial direction, and the magnetization direction of the two first rotor permanent magnets in each pair of poles is opposite, and they are in the same row The magnetization directions of two adjacent first rotor permanent magnets are also opposite; the first rotor permanent magnets are embedded in the outer surface of the first rotor core or fixed on the outer surface of the first rotor core; two adjacent first rotors in the same row The space angle occupied by the spacing of the permanent magnets is half of the space angle occupied by the tooth spacing d of two adjacent transverse flux rotors in the same row in the transverse flux rotor;

Both m and n are integers greater than 0.

Advantages of the present invention: the transverse-radial flux structure brushless composite permanent magnet motor of the present invention supplies power to the first stator and the second stator respectively through two power supplies of different frequencies; the winding on the second stator A rotating magnetic field is generated to drive the permanent magnet rotor to rotate in the same direction and at the same speed; the entire first stator forms m pairs of annular magnetic poles with alternating polarities, and the magnetic field of the annular magnetic poles is modulated by the transverse flux rotor, on the inner surface of the transverse flux rotor A plurality of alternating magnetic poles distributed in the circumferential direction are formed. According to the principle that the same poles repel each other and the opposite poles attract each other, relative rotation occurs between the transverse flux rotor and the permanent magnet rotor, thus forming a transverse flux rotor and a permanent magnet rotor. The speed difference between the magnetic rotors; the electromagnetic torque between the transverse flux rotor and the permanent magnet rotor is equal in size and opposite in direction; after the second stator is energized, an electromagnetic torque will be added to the permanent magnet rotor (positive or positive) negative), thus forming a torque difference between the transverse flux rotor and the permanent magnet rotor.

The transverse-radial magnetic flux structure brushless composite permanent magnet motor of the present invention has a brushless structure, and the armature windings of the two stators do not need to rotate, which overcomes the decrease in operating efficiency caused by the use of the brush structure and is reliable. There are problems such as reduced performance and frequent maintenance of components such as brushes.

The brushless composite permanent magnet motor with a transverse-radial magnetic flux structure of the present invention is suitable for industrial technologies that require two mechanical shafts at different rotational speeds to work simultaneously.

For example: when the transverse-radial flux structure brushless compound permanent magnet motor of the present invention is applied in a hybrid vehicle, it can be installed between the engine and the final reducer, by adjusting the The current can provide a variable torque difference, and at the same time, by adjusting the power supply frequency of the first stator and the second stator winding, a variable speed difference can be provided. Actual road conditions require automobile engines to provide constantly changing rotational speed and torque, while existing automobile engines can only achieve high efficiency and low emission work in a small range of torque rotational speed areas. The difference between the torque and speed of the engine, so that it is not necessary to change the operating point of the engine frequently, so that it can always work in the high-efficiency zone, achieving the effect of energy saving and emission reduction. In addition, it can also realize the driving control of the car and smooth speed regulation in a wide range through electronic control; at the same time, it also has the advantages of not requiring complicated cooling devices, simple structure, small size, and low cost.

Description of drawings

Fig. 1 is a structural schematic diagram of a brushless composite permanent magnet motor with a transverse-radial flux structure described in Embodiment 1;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is an expanded view of the transverse flux rotor in Fig. 1;

Fig. 5 is an expanded view of the first permanent magnet rotor in Fig. 1 .

Detailed ways

Specific Embodiments 1. The present embodiment will be described below in conjunction with FIGS. 1 to 5. The transverse-radial flux structure brushless composite permanent magnet motor described in the present embodiment includes a housing 4 and an end cover 3. The housing 4 End caps 3 are arranged at both ends of the motor, and it is characterized in that a transverse flux dual-rotor motor and a radial torque regulating motor are arranged side by side in the housing 4, and the transverse flux dual-rotor motor includes a first stator 5, A transverse flux rotor 6, a first permanent magnet rotor 1, a permanent magnet rotor output shaft 2 and a transverse flux rotor output shaft 9, the radial torque regulating motor includes a second stator 8 and a second permanent magnet rotor 7, the transverse The flux rotor output shaft 9 is simultaneously used as the rotor shaft of the radial torque regulating motor,

The second stator 8 of the radial torque regulating motor is fixed on the inner side wall of the housing 4, the second permanent magnet rotor 7 is fixed on the transverse flux rotor output shaft 9, the second stator 8 and the second permanent magnet rotor There is an air gap along the radial direction between 7, and the air gap width is L3; the second stator 8 is composed of a second stator winding 8-2 and a second stator core 8-1;

The first stator 5 of the transverse flux double rotor motor is fixed on the inner wall of the housing 4, the first permanent magnet rotor 1 is fixed on the output shaft 2 of the permanent magnet rotor, and the transverse flux rotor 6 is located on the first stator 5 and the first permanent magnet rotor 1, the transverse flux rotor 6 is fixed on the transverse flux rotor output shaft 9, and the transverse flux rotor 6 is rotationally connected with the permanent magnet rotor output shaft 2 through a bearing; There is an air gap between the flux rotor 6 and the first stator 5, and the air gap width is L1; there is an air gap between the transverse flux rotor 6 and the first permanent magnet rotor 1, and the air gap width is L2;

The first stator 5 is composed of m phase units with the same structure closely arranged in the axial direction; each phase unit is composed of a first stator core 5-1 and a first stator winding 5-2; each first stator The cross-section of the sub-core 5-1 is "concave", the opening of the "concave" faces the transverse flux rotor 6, and the first stator winding 5-2 is embedded in the opening of the "concave";

The transverse flux rotor 6 is composed of a supporting part 6-1 and m transverse flux units 6-2, each transverse flux unit 6-2 contains n pairs of transverse flux rotor teeth 6-2-1, all transverse flux The rotor teeth 6-2-1 are fixed on the support part 6-1; m transverse flux units 6-2 are uniformly arranged in the axial direction, and each transverse flux unit 6-2 is respectively connected to the first stator 5 A phase unit corresponds to,

The n pairs of transverse flux rotor teeth 6-2-1 of each transverse flux unit 6-2 are divided into two parallel left and right rows, and each row of transverse flux rotor teeth 6-2-1 is evenly distributed along the circumference to form a ring shape; The distance between two adjacent transverse flux rotor teeth 6-2-1 in the same row is d, and the corresponding two transverse flux rotor teeth 6-2-1 in the two rows are located at the same position of the transverse flux rotor 6. on one bus, and form a pair of poles of the transverse flux rotor 6; two rows of transverse flux rotor teeth 6-2-1 in each transverse flux unit 6-2 form two rings corresponding to the position along the circumference The protruding parts on both sides of the corresponding "concave"-shaped opening of the first stator core 5-1 are respectively aligned;

The space angle occupied by the distance d between two adjacent transverse flux rotor teeth 6-2-1 in the same row that are staggered by 1/m times between adjacent transverse flux units 6-2 in the circumferential direction;

The first permanent magnet rotor 1 is composed of a first permanent magnet rotor core 1-1 and m first permanent magnet units 1-2, and m first permanent magnets are arranged on the outer circumferential surface of the first permanent magnet rotor core 1-1 Unit 1-2, m first permanent magnet units 1-2 are evenly distributed along the axial direction, and each first permanent magnet unit 1-2 corresponds to a transverse magnetic flux unit 6-2,

Each first permanent magnet unit 1-2 is provided with m first rotor cores 1-2-1 and 2n pairs of first rotor permanent magnets 1-2-2, the 2n pairs of first rotor permanent magnets 1-2- 2 Divided into parallel left and right rows, the first rotor permanent magnets 1-2-2 in each row are evenly distributed along the circumference to form a circular ring; the corresponding first rotor permanent magnets 1-2-2 in the two rows are located in the first On the same busbar of a permanent magnet rotor 1, and form a pair of poles of the first permanent magnet rotor 1; two rows of first rotor permanent magnets 1-2-2 in each first permanent magnet unit 1-2 are along the circumference The two rings formed are respectively aligned with the two rows of transverse flux rotor teeth 6-2-1 in the corresponding transverse flux unit 6-2 along the circumference of the two rings, and the first rotor permanent magnet 1- 2-2 The shape and size of the top surface and the bottom surface of the transverse flux rotor teeth 6-2-1 are the same; the first rotor permanent magnet 1-2-2 is magnetized in the radial direction, and the two second pieces in each pair of poles The magnetization direction of a rotor permanent magnet 1-2-2 is opposite, and the magnetization direction of two adjacent first rotor permanent magnets 1-2-2 in the same column is also opposite; the first rotor permanent magnet 1-2-2 is embedded in the first The outer surface of the rotor core 1-2-1 or fixed on the outer surface of the first rotor core 1-2-1; the space angle occupied by the distance between two adjacent first rotor permanent magnets 1-2-2 in the same row, is half of the space angle occupied by the distance d between two adjacent transverse flux rotor teeth 6-2-1 in the transverse flux rotor 6;

Both m and n are integers greater than 0.

working principle:

Each pair of transverse flux rotor teeth 6-2-1 in the transverse flux rotor described in this embodiment forms a pair of magnetic poles after passing through the magnetic field lines. The pair of teeth has four end surfaces, respectively for each transverse flux rotor tooth 6-2-1 top and bottom surfaces, wherein the two top surfaces of the two transverse flux rotor teeth 6-2-1 are opposite to the first stator 5, and the two transverse flux rotor teeth 6-2- The two bottom surfaces of 1 are opposite to the first permanent magnet rotor 1. When the motor is working, the path of the magnetic force line is: the magnetic force line is output from a first permanent magnet 1-2-2 in the first permanent magnet rotor 1, and passes through the transverse The air gap L2 between the flux rotor 6 and the first permanent magnet rotor 1 enters the bottom surface of one transverse flux rotor tooth 6-2-1 in a pair of teeth of the corresponding transverse flux rotor 6, and from the transverse magnetic The output through the top surface of the rotor tooth 6-2-1 passes through the air gap L1 between the transverse flux rotor 6 and the first stator 5, and passes through the first stator core in the phase unit of the corresponding first stator 5 5-1, then return to the top surface of another transverse flux rotor tooth 6-2-1 in the pair of teeth through the air gap L1 between the transverse flux rotor 6 and the first stator 5, and then Output from the bottom surface of the transverse flux rotor tooth 6-2-1, pass through the air gap L2 between the transverse flux rotor 6 and the first permanent magnet rotor 1 again, and enter into the transverse flux rotor tooth 6-2-1 Corresponding to another first permanent magnet 1-2-2 in the first permanent magnet rotor 1, and returning from the first permanent magnet 1-2-2 to the permanent magnet outputting the magnetic force line, forming a closed magnetic force line.

According to the path of the above-mentioned lines of magnetic force, it can be seen that in this embodiment, the bottom surfaces of all the transverse flux rotor teeth 6-2-1 on the same column in the transverse flux rotor 6 produce magnetic poles with the same polarity; The distance between the magnetic flux rotor teeth 6-2-1 is d, each column contains 2n transverse magnetic flux rotor teeth 6-2-1, and the two first permanent magnets 1- The distance between 2-2 is 0.5d, and each row contains 4n permanent magnets 1-2-2, so the bottom surfaces of all transverse flux rotor teeth 6-2-1 in the same row are facing at the same time The magnetic poles of the first permanent magnets 1-2-2 are the same; every two first permanent magnets 1-2-2 adjacent to each other in the same row on the first permanent magnet rotor 1 form a circumferential north-south pole; each transverse magnetic flux unit 6- The two rows of teeth of 2 form two rings, forming 2m rings in total, and the 2m rings are arranged in the axial direction; the transverse flux rotor teeth 6-2- of two adjacent transverse flux units 6-2 The ring formed by 1 is staggered by 1/m times the space angle occupied by the tooth pitch d of the transverse flux rotor.

The magnetic field generated by the current in the first stator winding 5-2 of the first stator 5 is modulated by the transverse flux rotor 6, so that m on the surface of the first stator core 5-1 of the first stator 5 is opposite to the axial direction The arranged magnetic poles induce a plurality of circumferentially distributed magnetic poles on the bottom surfaces of the m transverse magnetic flux units 6-2.

The brushless feed compound motor of the present invention supplies power to the first stator 5 and the second stator 8 respectively through two power supplies of different frequencies; the winding on the second stator 8 generates a rotating magnetic field, which drives the first permanent magnet rotor 1 Rotating in the same direction and at the same speed; the entire first stator 5 forms m pairs of annular magnetic poles with alternating polarities, and the magnetic field of the annular magnetic poles is modulated by the transverse flux rotor 6, forming a plurality of circular poles distributed in the circumferential direction on the inner surface of the transverse flux rotor 6 The magnetic poles with alternating polarities produce relative rotation between the transverse flux rotor 6 and the first permanent magnet rotor 1 according to the principle that the same poles repel each other and the opposite poles attract each other, so that the transverse flux rotor 6 and the first permanent magnet rotor 1 are formed. The speed difference between the magnetic rotors 1; the electromagnetic torque between the transverse flux rotor 6 and the first permanent magnet rotor 1 is equal in size and opposite in direction; the second stator 8 will be on the first permanent magnet rotor 1 after being energized An additional electromagnetic torque can be positive or negative, thus forming a torque difference between the transverse flux rotor 6 and the first permanent magnet rotor 1 .

When the transverse-axial flux structure brushless compound permanent magnet motor described in the present invention is applied in a hybrid vehicle, it can be installed between the engine and the final reducer, by adjusting the second stator winding 8-2 The current can provide a variable torque difference, and at the same time, by adjusting the power supply frequency of the first stator winding 5-2 and the second stator winding 8-2, a variable speed difference can be provided. The actual road conditions require the car engine to provide constantly changing speed and torque.

Specific Embodiment 2. The difference between this embodiment and Embodiment 1 is that the first stator winding 5-2 and the second stator winding 8-2 both adopt a star connection or a delta connection, and the others are the same as Embodiment 1. same.

Specific Embodiment 3. The difference between this embodiment and Embodiment 1 is that the second stator core 8-1 is circular and has a plurality of slots on its inner surface, and the center lines of the openings of the plurality of slots are all Evenly distributed around the axis line of the second stator 8, the second stator winding 8-2 is embedded in the slot; the outer surface of the second permanent magnet rotor 7 is fixed with a plurality of second rotor permanent magnet blocks 7-1, so The plurality of second rotor permanent magnet blocks 7-1 are evenly distributed along the circumferential direction, and the second rotor permanent magnet blocks 7-1 are magnetized along the radial direction, and the adjacent two second rotor permanent magnet blocks 7-1 The magnetization direction is opposite, and the others are the same as the first embodiment.

Embodiment 4. The difference between this embodiment and Embodiment 3 is that the second rotor permanent magnet block 7-1 is embedded in the outer surface of the second permanent magnet rotor 7 or fixed on the second permanent magnet rotor 7. On the outside, the others are the same as those in the third embodiment.

Embodiment 5. The difference between this embodiment and Embodiment 1 is that the bottom surface, top surface and longitudinal section of the transverse flux rotor teeth 6-2-1 are polygonal, and the others are the same as Embodiment 1.

Embodiment 6. The difference between this embodiment and Embodiment 1 is that the bottom and top surfaces of the transverse flux rotor teeth 6-2-1 are axisymmetric polygons, and the others are the same as Embodiment 1.

Specific Embodiment 7. The difference between this embodiment and Embodiment 1 is that the bottom surface, top surface and longitudinal section of the first rotor permanent magnet 1-2-2 are polygonal, and the others are the same as Embodiment 1.

Embodiment 8. The difference between this embodiment and Embodiment 1 is that the bottom surface and the top surface of the first rotor permanent magnet 1-2-2 may be axisymmetric polygons, and the others are the same as Embodiment 1.

Ninth embodiment. The difference between this embodiment and the first embodiment is that the first rotor permanent magnet 1-2-2 is a flat magnetic pole or a magnetism-concentrating magnetic pole. Others are the same as the first embodiment.

Claims (9)

1. Transverse-radial magnetic flux structure brushless composite permanent magnet motor, which includes a housing (4) and an end cover (3), and the two ends of the housing (4) are provided with end covers (3), which are characterized in that , a transverse flux double rotor motor and a radial torque regulating motor are arranged side by side in the casing (4), and the transverse flux double rotor motor includes a first stator (5), a transverse flux rotor (6), A first permanent magnet rotor (1), a permanent magnet rotor output shaft (2) and a transverse flux rotor output shaft (9), the radial torque regulating motor includes a second stator (8) and a second permanent magnet rotor ( 7), the transverse flux rotor output shaft (9) simultaneously serves as the rotor shaft of the radial torque regulating motor, The second stator (8) of the radial torque regulating motor is fixed on the inner side wall of the housing (4), the second permanent magnet rotor (7) is fixed on the transverse flux rotor output shaft (9), and the second There is an air gap along the radial direction between the stator (8) and the second permanent magnet rotor (7), and the air gap width is L3; the second stator (8) is composed of the second stator winding (8-2) and the second Stator core (8-1) composition; The first stator (5) of the transverse flux dual-rotor motor is fixed on the inner side wall of the casing (4), the first permanent magnet rotor (1) is fixed on the permanent magnet rotor output shaft (2), and the transverse magnetic flux The flux rotor (6) is located between the first stator (5) and the first permanent magnet rotor (1), the transverse flux rotor (6) is fixed on the transverse flux rotor output shaft (9), and the The transverse flux rotor (6) is rotationally connected to the permanent magnet rotor output shaft (2) through a bearing; there is an air gap between the transverse flux rotor (6) and the first stator (5), and the width of the air gap is L1; There is an air gap between the transverse flux rotor (6) and the first permanent magnet rotor (1), and the width of the air gap is L2; The first stator (5) is composed of m phase units with the same structure closely arranged in the axial direction; each phase unit is composed of a first stator core (5-1) and a first stator winding (5-2) ; The section of each first stator core (5-1) is "concave" shape, and the opening of "concave" shape faces the transverse flux rotor (6), and the first stator winding (5-2) is embedded in the In the opening of the "concave" shape; The transverse flux rotor (6) consists of a supporting part (6-1) and m transverse flux units (6-2), each transverse flux unit (6-2) contains n pairs of transverse flux rotor teeth (6 -2-1), all transverse flux rotor teeth (6-2-1) are fixed on the supporting part (6-1); m transverse flux units (6-2) are arranged uniformly along the axial direction, and each The transverse magnetic flux units (6-2) respectively correspond to one phase unit in the first stator (5), The n pairs of transverse flux rotor teeth (6-2-1) of each transverse flux unit (6-2) are divided into two parallel rows, left and right, and each row of transverse flux rotor teeth (6-2-1) is uniform along the circumference The distribution forms a ring shape; the distance between two adjacent transverse flux rotor teeth (6-2-1) in the same row is d, and the two transverse flux rotor teeth (6-2-1) corresponding to the positions in the two rows 1) Located on the same busbar of the transverse flux rotor (6) and form a pair of poles of the transverse flux rotor (6); two rows of transverse flux rotor teeth in each transverse flux unit (6-2) (6-2-1) The two rings formed along the circumference are respectively aligned with the protruding parts on both sides of the "concave" opening of the first stator core (5-1) corresponding to the position; The space angle occupied by the distance d between two adjacent transverse flux rotor teeth (6-2-1) in the same column that are staggered by 1/m times in the circumferential direction between adjacent transverse flux units (6-2); The first permanent magnet rotor (1) is composed of a first permanent magnet rotor core (1-1) and m first permanent magnet units (1-2), and the outer circumferential surface of the first permanent magnet rotor core (1-1) m first permanent magnet units (1-2) are arranged, and the m first permanent magnet units (1-2) are evenly distributed along the axial direction, and each first permanent magnet unit (1-2) is connected with a transverse magnetic Corresponding to unit (6-2), Each first permanent magnet unit (1-2) is provided with m first rotor cores (1-2-1) and 2n pairs of first rotor permanent magnets (1-2-2), the 2n pairs of first rotor The permanent magnets (1-2-2) are divided into parallel left and right rows, and the first rotor permanent magnets (1-2-2) in each row are evenly distributed along the circumference to form a circular ring; the corresponding first rotor magnets in the two rows The rotor permanent magnets (1-2-2) are located on the same busbar of the first permanent magnet rotor (1), and form a pair of poles of the first permanent magnet rotor (1); each first permanent magnet unit (1- Two rows of first rotor permanent magnets (1-2-2) in 2) form two rings along the circumference corresponding to the two rows of transverse flux rotor teeth in the transverse flux unit (6-2) ( 6-2-1) The two rings formed along the circumference are respectively aligned, and the shape and size of the top surface of the first rotor permanent magnet (1-2-2) and the bottom surface of the transverse flux rotor teeth (6-2-1) are the same ; The first rotor permanent magnets (1-2-2) are magnetized radially, and the magnetization directions of the two first rotor permanent magnets (1-2-2) in each pair of poles are opposite, adjacent in the same column The magnetization directions of the two first rotor permanent magnets (1-2-2) are also opposite; the first rotor permanent magnets (1-2-2) are embedded in the outer surface of the first rotor core (1-2-1) or fixed on the outer surface of the first rotor core (1-2-1); the space angle occupied by the distance between two adjacent first rotor permanent magnets (1-2-2) in the same column is the transverse flux rotor (6) Half of the space angle occupied by the distance d between two adjacent transverse flux rotor teeth (6-2-1) in the same row; Both m and n are integers greater than 0. 2. The transverse-radial flux structure brushless composite permanent magnet motor according to claim 1, characterized in that, the first stator winding (5-2) and the second stator winding (8-2) all adopt Star connection or delta connection. 3. The transverse-radial magnetic flux structure brushless compound permanent magnet motor according to claim 1, characterized in that the second stator core (8-1) is circular, and its inner surface has a plurality of Slots, the opening centerlines of the plurality of slots are evenly distributed around the axis line of the second stator (8), and the second stator winding (8-2) is embedded in the slots; the second permanent magnet rotor (7) The outer surface of the outer surface is fixed with a plurality of second rotor permanent magnet blocks (7-1), and the plurality of second rotor permanent magnet blocks (7-1) are evenly distributed along the circumferential direction, and the second rotor permanent magnet blocks (7-1) -1) Magnetizing in the radial direction, and the magnetizing directions of two adjacent second rotor permanent magnet blocks (7-1) are opposite. 4. The transverse-radial flux structure brushless compound permanent magnet motor according to claim 3, characterized in that the second rotor permanent magnet block (7-1) is embedded in the outer surface of the second permanent magnet rotor (7) or fixed on the outer surface of the second permanent magnet rotor (7). 5. The transverse-radial flux structure brushless composite permanent magnet motor according to claim 1, characterized in that the bottom surface, top surface and longitudinal section of the transverse flux rotor teeth (6-2-1) are polygonal . 6. The transverse-radial flux structure brushless compound permanent magnet motor according to claim 1, characterized in that the bottom and top surfaces of the transverse flux rotor teeth (6-2-1) are axisymmetric polygons. 7. The transverse-radial flux structure brushless compound permanent magnet motor according to claim 1, characterized in that the bottom surface, top surface and longitudinal section of the first rotor permanent magnet (1-2-2) are polygonal . 8. The transverse-radial flux structure brushless compound permanent magnet motor according to claim 1, characterized in that the bottom surface and the top surface of the first rotor permanent magnet (1-2-2) can be axisymmetric polygons . 9. The transverse-radial flux structure brushless compound permanent magnet motor according to claim 1, characterized in that, the first rotor permanent magnet (1-2-2) is a flat-plate magnetic pole or a magnet-concentrating magnetic pole.

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