Asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation driving motor

Abstract

The invention discloses an asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation driving motor, which belongs to the technical field of automobile motor electric appliances, and comprises a fan, a front end cover, a rear end cover, a casing, a hybrid excitation rotor and a stator, the fan is arranged on one side of the rear end cover, and the casing is arranged between the front end cover and the rear end cover. The hybrid excitation rotor comprises a claw pole electric excitation rotor, a permanent magnet rotor with an asymmetric hybrid magnetic pole structure and a magnetic isolation bushing arranged between the claw pole electric excitation rotor and the permanent magnet rotor, the permanent magnet rotor comprises a rotating shaft, a rotor core and eight rotor magnetic poles, the rotor core is pressed on the rotating shaft, and the rotor magnetic poles are arranged on the rotor core. The asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation driving motor is low in harmonic content of the whole machine, high in output quality, large in magnetic adjustment range and good in voltage stabilization performance.

Description

Technical Field

[0001] The invention relates to the technical field of automobile motors and electrical appliances, and in particular to an asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor. Background Art

[0002] At present, most of the drive motors used in electric vehicles are electrically excited drive motors or single-pole permanent magnet drive motors. Due to the large excitation loss and low efficiency of electrically excited drive motors, they are mostly used in low-speed electric vehicles or multi-drive motor occasions. The rotor poles of single-pole permanent magnet drive motors are mostly single surface-mounted permanent magnet poles or built-in V-shaped permanent magnet pole structures. The magnetic field intensity at the center of the rotor magnetic field pole is large, and the starting resistance is large. In addition, due to the stator slots or the gaps on both sides of the surface-mounted permanent magnet steel, there are many high-order harmonics in the main air gap, resulting in large cogging torque, which causes vibration and noise of the whole machine. In order to reduce the cogging torque, the current drive motor rotors mostly adopt a single oblique V-shaped rotor pole structure and assist in rotor outer circle slotting, but the effect is not obvious. It is still necessary to further improve the rotor magnetic field distribution, reduce torque pulsation, and improve the output quality of the whole machine. Summary of the invention

[0003] The purpose of the present invention is to provide an asymmetric hybrid pole permanent magnet and electromagnetic hybrid excitation drive motor, which solves the problems of large excitation loss and low efficiency of conventional pure electric excitation drive motors, as well as the problems of high main air gap harmonic content, large cogging torque and low output quality of the whole machine of single pole permanent magnet drive motors.

[0004] To achieve the above-mentioned objectives, the present invention provides an asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor, comprising a fan, a front cover, a rear cover, a casing, a hybrid excitation rotor and a stator, the fan being arranged on one side of the rear cover, the casing being arranged between the front cover and the rear cover, the hybrid excitation rotor comprising a claw pole electric excitation rotor, a permanent magnet rotor with an asymmetric hybrid magnetic pole structure, and a magnetic isolation bushing arranged between the claw pole electric excitation rotor and the permanent magnet rotor, the permanent magnet rotor comprising a rotating shaft, a rotor core and eight rotor poles, the rotor core being pressed onto the rotating shaft, and the rotor poles being arranged on the rotor core.

[0005] Preferably, an even number of pairs of radial rectangular slots are evenly distributed on the permanent magnet rotor, and arc-shaped magnetic isolation air gaps are provided at the outer ends of the radial rectangular slots, the width of the arc-shaped magnetic isolation air gaps is equal to the width of the radial rectangular slots, and the arc-shaped magnetic isolation air gaps are not connected to the outer circle of the rotor core; Radial permanent magnet steels are placed in the radial rectangular slots in a manner that the opposite surfaces have the same magnetic properties, and two adjacent radial permanent magnet steels form two side magnetic poles, and an outer magnetic pole and an inner magnetic pole are arranged in the middle of the two side magnetic poles; The outer magnetic pole is close to the outer circle of the rotor core and is not connected with the outer circle of the rotor core, and the inner magnetic pole is close to the inner circle of the rotor core and is not connected with the inner circle of the rotor core.

[0006] Preferably, each rotor magnetic pole is composed of two side magnetic poles and an outer magnetic pole and an inner magnetic pole between the two side magnetic poles; The permanent magnets of the outer magnetic poles are all arranged on the left side of the radial center line of the rotor magnetic poles, and the permanent magnets of the inner magnetic poles are all arranged on the right side of the radial center line of the rotor magnetic poles; There is no connection between the outer magnetic pole and the inner magnetic pole in each rotor magnetic pole, and between the magnetic poles on both sides.

[0007] Preferably, the angle occupied by the outer magnetic field on the left side of each rotor pole corresponding to the outer circle of the rotor core is greater than the angle occupied by the magnetic fields on both sides of the left side of the rotor pole corresponding to the outer circle of the rotor core, and the angle occupied by the inner magnetic field on the right side of each rotor pole corresponding to the outer circle of the rotor core is greater than the angle occupied by the magnetic fields on both sides of the right side of the rotor pole corresponding to the outer circle of the rotor core.

[0008] Preferably, a first N-pole magnetic pole is formed between two adjacent radial permanent magnet steels whose opposite surfaces are N-pole magnetic poles, the outer magnetic pole of the first N-pole magnetic pole is an oblique U-shaped magnetic pole, a first rectangular permanent magnet steel whose right end face is N-pole is provided in the groove at the left end of the oblique U-shaped magnetic pole, and a vertical distance from the outer end of the first rectangular permanent magnet steel to the radial center line of the first N-pole magnetic pole is greater than a vertical distance from the inner end of the first rectangular permanent magnet steel to the radial center line of the first N-pole magnetic pole; A second rectangular permanent magnet steel having an N-pole outer end face is arranged in the inner end slot of the inclined U-shaped magnetic pole, the straight line where the outer end edge of the second rectangular permanent magnet steel is located is perpendicular to the radial center line of the first N-pole magnetic pole, a first connected magnetic isolation air gap is arranged between the inner end of the slot where the first rectangular permanent magnet steel is located and the left end of the slot where the second rectangular permanent magnet steel is located, and the inner end width of the slot where the first rectangular permanent magnet steel is located and the left end width of the slot where the second rectangular permanent magnet steel is located are both greater than the widths of both ends of the first connected magnetic isolation air gap; The right end of the oblique U-shaped magnetic pole is the first magnetic isolation air gap, the outer end of the first magnetic isolation air gap is the first rectangular magnetic isolation air gap, the center line of the first rectangular magnetic isolation air gap in the length direction coincides with the radial center line of the first N-pole magnetic pole, the right end of the slot where the second rectangular permanent magnet steel is located is connected to the inner end of the first magnetic isolation air gap, and the right end width of the slot where the second rectangular permanent magnet steel is located is greater than the inner end width of the first magnetic isolation air gap; The inner magnetic pole of the first N-pole magnetic pole is an inverted V-shaped magnetic pole, the middle of the inverted V-shaped magnetic pole is not connected, and a third rectangular permanent magnetic steel with an N-pole outer end face is provided in the right end groove of the inverted V-shaped magnetic pole, and the distance from the inner end point of the left end of the third rectangular permanent magnetic steel to the radial center line of the first N-pole magnetic pole is less than 1 mm; A second magnetic isolation air gap is provided between the slot where the third rectangular permanent magnet steel is located and the radial rectangular slot on the right side of the first N-pole magnetic pole, the outer end of the second magnetic isolation air gap is the second rectangular magnetic isolation air gap, the outer end of the second rectangular magnetic isolation air gap extends toward the outer circle of the rotor core and is not connected to the outer circle of the rotor core; The inner end of the second magnetic isolation air gap is connected to the right end of the slot where the third rectangular permanent magnet is located and the inner end of the radial rectangular slot on the right side of the first N-pole magnetic pole, respectively, and the width of the connected parts is smaller than the right end width of the slot where the third rectangular permanent magnet is located and the inner end width of the radial rectangular slot on the right side of the first N-pole magnetic pole; The left end of the inverted V-shaped magnetic pole is the third magnetic isolation air gap, the inner end of the third magnetic isolation air gap is connected to the inner end of the radial rectangular slot on the left side of the first N-pole magnetic pole, and the width of the connected part is smaller than the inner end width of the radial rectangular slot on the left side of the first N-pole magnetic pole. The outer end point of the third magnetic isolation air gap and the outer end point of the third rectangular permanent magnet steel are at the same distance from the center of the rotor core, and the distance between the right end of the third magnetic isolation air gap and the left end of the slot where the third rectangular permanent magnet steel 25 is located is 1.5 mm.

[0009] Preferably, the rotor magnetic pole adjacent to the first N-pole magnetic pole in the clockwise direction is the first S-pole magnetic pole, and the outer magnetic pole of the first S-pole magnetic pole is a positive U-shaped magnetic pole; A fourth rectangular permanent magnet steel having an S pole as the right end face is arranged in the left end slot of the positive U-shaped magnetic pole, and the straight line where the right end edge of the fourth rectangular permanent magnet steel lies is parallel to the radial center line of the first S pole magnetic pole; A fifth rectangular permanent magnet steel having an S-pole outer end face is arranged in the inner end slot of the positive U-shaped magnetic pole, and the straight line where the outer end edge of the fifth rectangular permanent magnet steel lies is perpendicular to the radial center line of the first S-pole magnetic pole; The right end of the positive U-shaped magnetic pole is the fourth magnetic isolation air gap, the outer end of the fourth magnetic isolation air gap is the third rectangular magnetic isolation air gap, and the center line of the third rectangular magnetic isolation air gap in the length direction coincides with the radial center line of the first S-pole magnetic pole; The inner end of the fourth magnetic isolation air gap is connected to the right end of the slot where the fifth rectangular permanent magnet steel is located, and the width of the connected portion is smaller than the width of the right end of the slot where the fifth rectangular permanent magnet steel is located; A second connected magnetic isolation air gap is provided between the inner end of the slot where the fourth rectangular permanent magnet steel is located and the left end of the slot where the fifth rectangular permanent magnet steel is located, and the inner end width of the slot where the fourth rectangular permanent magnet steel is located and the left end width of the slot where the fifth rectangular permanent magnet steel is located are both greater than the widths of both ends of the second connected magnetic isolation air gap; The inner magnetic pole of the first S-pole magnetic pole is a pair-shaped magnetic pole, the left end of the pair-shaped magnetic pole is a fifth magnetic isolation air gap, and the outer end of the fifth magnetic isolation air gap is a fourth rectangular magnetic isolation air gap; The center line of the fourth rectangular magnetic isolation gap in the length direction coincides with the center line of the first S-pole magnetic pole, and the distance from the outer end of the fourth rectangular magnetic isolation gap to the inner end of the fourth magnetic isolation gap is 2 mm; A sixth rectangular permanent magnet steel having an S pole on its left end is arranged in the middle slot at the right end of the pair-shaped magnetic pole, and the right end of the fifth magnetic isolation air gap is connected to the inner end of the slot where the sixth rectangular permanent magnet steel is located, and the width of the connected portion is smaller than the inner end width of the slot where the sixth rectangular permanent magnet steel is located; A sixth magnetic isolation air gap is provided at the outer end of the slot where the sixth rectangular permanent magnet steel is located, and an inner end of the sixth magnetic isolation air gap is connected to the outer end of the slot where the sixth rectangular permanent magnet steel is located, and a width of the connected portion is smaller than a width of the outer end of the slot where the sixth rectangular permanent magnet steel is located; The outer end of the sixth magnetic isolation air gap extends toward the outer circle of the rotor core and is not connected to the outer circle of the rotor core; The fifth magnetic isolation air gap, the slot where the sixth rectangular permanent magnet steel is located and the sixth magnetic isolation air gap are not connected to the radial rectangular slot on the right side of the first S-pole magnetic pole.

[0010] Preferably, the rotor magnetic pole adjacent to the first S-pole magnetic pole in the clockwise direction is the second N-pole magnetic pole, and the outer magnetic pole of the second N-pole magnetic pole is a V-shaped magnetic pole; A seventh rectangular permanent magnet steel with an N-pole on the right end face is arranged in the left end slot of the V-shaped magnetic pole, and the right end of the V-shaped magnetic pole is a seventh magnetic isolation air gap; The right end of the seventh magnetic isolation air gap is the fifth rectangular magnetic isolation air gap, and the center line of the fifth rectangular magnetic isolation air gap in the length direction coincides with the radial center line of the second N-pole magnetic pole; The left end of the seventh magnetic isolation air gap is connected to the inner end of the slot where the seventh rectangular permanent magnet is located, and the width of the connected portion is smaller than the width of the inner end of the slot where the seventh rectangular permanent magnet is located; The inner magnetic pole of the second N-pole magnetic pole is a straight-line magnetic pole, and an eighth rectangular permanent magnet steel with an N-pole outer end face is arranged in the right end slot of the straight-line magnetic pole, and the straight line where the inner end edge of the eighth rectangular permanent magnet steel is located is perpendicular to the radial center line of the second N-pole magnetic pole; The vertical distance between the left end of the slot where the eighth rectangular permanent magnet is located and the radial center line of the second N-pole magnetic pole is less than 1 mm; An eighth magnetic isolation air gap is provided between the slot where the eighth rectangular permanent magnet steel is located and the radial rectangular slot on the right side of the second N-pole magnetic pole, the outer end of the eighth magnetic isolation air gap is the sixth rectangular magnetic isolation air gap, the outer end of the sixth rectangular magnetic isolation air gap extends toward the outer circle of the rotor core and is not connected to the outer circle of the rotor core; The inner end of the eighth magnetic isolation air gap is connected to the right end of the slot where the eighth rectangular permanent magnet is located and the inner end of the radial rectangular slot on the right side of the second N-pole magnetic pole, respectively, and the width of the connected parts is smaller than the right end width of the slot where the eighth rectangular permanent magnet is located and the inner end width of the radial rectangular slot on the right side of the second N-pole magnetic pole; The left end of the straight-line magnetic pole is the ninth magnetic isolation air gap, and the right end of the ninth magnetic isolation air gap is not connected to the left end of the slot where the eighth rectangular permanent magnet steel is located, and the unconnected portion is 1.5 mm; The right end of the ninth magnetic isolation air gap is the seventh rectangular magnetic isolation air gap, and the straight line where the inner end edge of the seventh rectangular magnetic isolation air gap is located coincides with the inner end edge of the slot where the eighth rectangular permanent magnet steel is located; The left end of the ninth magnetic isolation air gap is connected to the inner end of the radial rectangular groove on the left side of the second N-pole magnetic pole, and the width of the connected portion is smaller than the inner end width of the radial rectangular groove on the left side of the second N-pole magnetic pole.

[0011] Preferably, the rotor magnetic pole adjacent to the second N-pole magnetic pole in the clockwise direction is the second S-pole magnetic pole, the outer magnetic pole of the second S-pole magnetic pole is a semicircular ring-shaped permanent magnet steel, and the inner arc surface of the semicircular ring-shaped permanent magnet steel is the S pole; The inner magnetic pole of the second S-pole magnetic pole is an oblique herringbone magnetic pole, and the outer end slot of the oblique herringbone magnetic pole is provided with a ninth rectangular permanent magnetic steel with an S-pole outer end face and a tenth rectangular permanent magnetic steel with an S-pole left end face in sequence; The straight line where the outer end of the ninth rectangular permanent magnet is located is perpendicular to the radial center line of the second S-pole magnetic pole, and the vertical distance from the outer end of the tenth rectangular permanent magnet to the center line of the second S-pole magnetic pole is greater than the vertical distance from the inner end of the tenth rectangular permanent magnet to the center line of the second S-pole magnetic pole; A third connected magnetic isolation air gap is provided between the right end of the slot where the ninth rectangular permanent magnet steel is located and the inner end of the slot where the tenth rectangular permanent magnet steel is located, and the width of the right end of the slot where the ninth rectangular permanent magnet steel is located and the width of the inner end of the slot where the tenth rectangular permanent magnet steel is located are both greater than the widths of both ends of the third connected magnetic isolation air gap; A tenth magnetic isolation air gap is provided at the outer end of the slot where the tenth rectangular permanent magnet steel is located, an inner end of the tenth magnetic isolation air gap is connected to the outer end of the slot where the tenth rectangular permanent magnet steel is located, and a width of the inner end of the tenth magnetic isolation air gap is smaller than a width of the outer end of the slot where the tenth rectangular permanent magnet steel is located; The outer end of the tenth magnetic isolation air gap extends toward the outer circle of the rotor core and is not connected with the outer circle of the rotor core; The inner end of the oblique herringbone magnetic pole is the eleventh magnetic isolation air gap, the inner end of the eleventh magnetic isolation air gap is the eighth rectangular magnetic isolation air gap, the center line of the eighth rectangular magnetic isolation air gap in the length direction coincides with the radial center line of the second S-pole magnetic pole, the inner end of the eighth rectangular magnetic isolation air gap extends toward the inner circle of the rotor core, and the distance between the inner end of the eighth rectangular magnetic isolation air gap and the inner circle of the rotor core is 2 mm; The outer end of the eleventh magnetic isolation air gap is connected to the left end of the slot where the ninth rectangular permanent magnet is located, and the width of the connected portion is smaller than the width of the left end of the slot where the ninth rectangular permanent magnet is located; The ninth rectangular permanent magnet slot, the tenth rectangular permanent magnet slot, the third connected magnetic isolation air gap and the tenth magnetic isolation air gap are not connected to the radial rectangular slot on the right side of the second S-pole magnetic pole; The outer ends of the first rectangular permanent magnet steel, the first magnetic isolation air gap, the second magnetic isolation air gap, the fourth rectangular permanent magnet steel, the fourth magnetic isolation air gap, the sixth magnetic isolation air gap, the seventh rectangular permanent magnet steel, the seventh magnetic isolation air gap, the eighth magnetic isolation air gap, the semicircular ring permanent magnet steel, the tenth magnetic isolation air gap and the arc-shaped magnetic isolation air gap are all 1.5 mm away from the outer circle of the rotor core.

[0012] Preferably, the outer magnetic pole and the inner magnetic pole are different and both are made of NdFeB permanent magnet steel, and the magnetic poles on both sides are the same and are made of ferrite permanent magnet steel.

[0013] Preferably, the magnetic poles adjacent to the second S-pole magnetic pole in the clockwise direction are: a third N-pole magnetic pole having the same structure as the first N-pole magnetic pole, a third S-pole magnetic pole having the same structure as the first S-pole magnetic pole, a fourth N-pole magnetic pole having the same structure as the second N-pole magnetic pole, and a fourth S-pole magnetic pole having the same structure as the second S-pole magnetic pole.

[0014] Therefore, the present invention adopts the above-mentioned asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor, which has the following beneficial effects: (1) The two sides of each rotor pole are the same, but the outer pole and the inner pole of each rotor pole are different, and the outer pole and the inner pole of adjacent rotor poles are also different, thus forming an asymmetric pole structure with asymmetry between the same pole and adjacent poles, which can effectively weaken the harmonic amplitude of the main air gap magnetic flux density and the cogging torque, and reduce the vibration and noise of the whole machine.

[0015] (2) The outer magnetic poles are designed to be on the left side of the rotor magnetic poles, and the inner magnetic poles are designed to be on the right side of the rotor magnetic poles. The overall asymmetric rotor magnetic field is formed in which the magnetic field strength of the left magnetic pole of the outer circle of the rotor core is greater than that of the right magnetic pole, further weakening the cogging torque and improving the output quality of the whole machine.

[0016] (3) The outer and inner magnetic poles of the rotor magnetic poles are made of neodymium iron boron rare earth permanent magnet material and are designed to provide a central magnetic field at the center of the rotor magnetic pole. The two side magnetic poles are made of ferrite permanent magnet material and are designed to provide two side magnetic fields on both sides of the magnetic pole. As a whole, a rotor magnetic field with a strong magnetic field at the center of the magnetic pole and a weak magnetic field on both sides is formed. At the same time, the outer circle angles of the rotor core corresponding to the outer and inner magnetic poles are larger than the rotor core angles corresponding to the two side magnetic poles on the same side. The strong magnetic field generated by the neodymium iron boron rare earth permanent magnet steel composite magnetic pole at the center of the magnetic pole accounts for a large proportion, and the weak magnetic field generated by the ferrite permanent magnet steel magnetic pole on both sides of the magnetic pole accounts for a small proportion. This not only ensures the rotor magnetic field strength and power density, but also saves the amount of rare earth permanent magnet material.

[0017] (4) The design of the first magnetic isolation air gap on the right side of the inclined U-shaped magnetic pole not only reduces the end magnetic leakage of the second rectangular permanent magnet steel, but also isolates the magnetic field generated by the first rectangular permanent magnet steel and the second rectangular permanent magnet steel on the left side of the first N-pole magnetic pole, which has a good magnetic field guiding effect. At the same time, the second magnetic isolation air gap, the third magnetic isolation air gap, the fourth magnetic isolation air gap, the fifth magnetic isolation air gap, the sixth magnetic isolation air gap, the seventh magnetic isolation air gap, the eighth magnetic isolation air gap, the ninth magnetic isolation air gap, the tenth magnetic isolation air gap and the eleventh magnetic isolation air gap all have the same effect.

[0018] (5) The design of the eleventh magnetic isolation air gap of the oblique herringbone magnetic pole extending toward the inner side of the rotor core can effectively improve the mechanical strength of the rotor core.

[0019] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of an asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor according to an embodiment of the present invention; Figure 2 A cross-sectional view of a rotor of an asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor according to an embodiment of the present invention; Reference numerals 1. Fan; 2. Rear cover; 3. Rotating shaft; 4. First rectangular permanent magnet steel; 5. Rotor core; 6. Sixth rectangular permanent magnet steel; 7. Fifth magnetic isolation air gap; 8. Eighth rectangular permanent magnet steel; 9. Magnetic isolation bushing; 10. Eighth magnetic isolation air gap; 11. Radial permanent magnet steel; 12. Semicircular permanent magnet steel; 13. Casing; 14. Claw-pole electric excitation rotor; 15. Stator; 16. Front cover; 17. Seventh rectangular permanent magnet steel; 18. Eleventh magnetic isolation air gap; 19, the ninth rectangular permanent magnet steel; 20, the tenth rectangular permanent magnet steel; 21, the tenth magnetic isolation air gap; 22, the third magnetic isolation air gap; 23, the second rectangular permanent magnet steel; 24, the first magnetic isolation air gap; 25, the third rectangular permanent magnet steel; 26, the second magnetic isolation air gap; 27, the fourth rectangular permanent magnet steel; 28, the fifth rectangular permanent magnet steel; 29, the fourth magnetic isolation air gap; 30, the sixth magnetic isolation air gap; 31, the ninth magnetic isolation air gap; 32, the seventh magnetic isolation air gap. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] Example like Figure 1-2As shown, the present invention provides an asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor, including a fan 1, a front cover 16, a rear cover 2, a housing 13, a hybrid excitation rotor and a stator 15, wherein the fan 1 is arranged on one side of the rear cover 2, and the housing 13 is arranged between the front cover 16 and the rear cover 2. The hybrid excitation rotor includes a claw pole electric excitation rotor 14, a permanent magnet rotor with an asymmetric hybrid magnetic pole structure, and a magnetic isolation bushing 9 arranged between the claw pole electric excitation rotor and the permanent magnet rotor. The permanent magnet rotor includes a rotating shaft 3, a rotor core 5 and eight rotor poles, wherein the rotor core 5 is press-fitted on the rotating shaft 3, and the rotor poles are all arranged on the rotor core 5.

[0024] An even number of pairs of radial rectangular slots are evenly distributed on the permanent magnet rotor, and arc-shaped magnetic isolation air gaps are provided at the outer ends of the radial rectangular slots. The width of the arc-shaped magnetic isolation air gaps is equal to the width of the radial rectangular slots, and the arc-shaped magnetic isolation air gaps are not connected to the outer circle of the rotor core 5. Radial permanent magnet steels 11 are placed in the radial rectangular slots in a manner that the opposite surfaces have the same magnetic properties. Two adjacent radial permanent magnet steels 11 form two side poles, and an outer magnetic pole and an inner magnetic pole are provided in the middle of the two side poles. The outer magnetic pole is close to the outer circle of the rotor core 5 and is not connected to the outer circle of the rotor core 5, and the inner magnetic pole is close to the inner circle of the rotor core 5 and is not connected to the inner circle of the rotor core 5.

[0025] Each rotor pole is composed of two side poles and an outer pole and an inner pole in the middle of the two side poles. The outer pole and the inner pole are different and are both composed of NdFeB permanent magnet steel. The two side poles are the same and are composed of ferrite permanent magnet steel. The permanent magnet steel of the outer pole is set on the left side of the radial center line of the rotor pole, and the permanent magnet steel of the inner pole is set on the right side of the radial center line of the rotor pole. The outer pole and the inner pole in each rotor pole are not connected, and the two side poles are not connected.

[0026] The angle occupied by the outer magnetic field on the left side of each rotor pole corresponding to the outer circle of the rotor core 5 is greater than the angle occupied by the magnetic fields on both sides of the left side of the rotor pole corresponding to the outer circle of the rotor core 5, and the angle occupied by the inner magnetic field on the right side of each rotor pole corresponding to the outer circle of the rotor core 5 is greater than the angle occupied by the magnetic fields on both sides of the right side of the rotor pole corresponding to the outer circle of the rotor core 5.

[0027] A first N-pole magnetic pole is formed between two adjacent radial permanent magnet steels 11 whose opposite surfaces have N-pole magnetism. The outer magnetic pole of the first N-pole magnetic pole is an inclined U-shaped magnetic pole. A first rectangular permanent magnet steel 4 with an N-pole on the right end face is provided in the groove at the left end of the inclined U-shaped magnetic pole. The vertical distance from the outer end of the first rectangular permanent magnet steel 4 to the radial center line of the first N-pole magnetic pole is greater than the vertical distance from the inner end of the first rectangular permanent magnet steel 4 to the radial center line of the first N-pole magnetic pole.

[0028] A second rectangular permanent magnet steel 23 with an N-pole outer end face is provided in the inner end slot of the inclined U-shaped magnetic pole, the straight line where the outer end edge of the second rectangular permanent magnet steel 23 is located is perpendicular to the radial center line of the first N-pole magnetic pole, and a first connected magnetic isolation air gap is provided between the inner end of the slot where the first rectangular permanent magnet steel 4 is located and the left end of the slot where the second rectangular permanent magnet steel 23 is located, and the inner end width of the slot where the first rectangular permanent magnet steel 4 is located and the left end width of the slot where the second rectangular permanent magnet steel 23 is located are both greater than the widths of the two ends of the first connected magnetic isolation air gap.

[0029] The right end of the inclined U-shaped magnetic pole is the first magnetic isolation air gap 24, the outer end of the first magnetic isolation air gap 24 is the first rectangular magnetic isolation air gap, the center line of the first rectangular magnetic isolation air gap in the length direction coincides with the radial center line of the first N-pole magnetic pole, the right end of the slot where the second rectangular permanent magnet steel 23 is located is connected to the inner end of the first magnetic isolation air gap 24, and the right end width of the slot where the second rectangular permanent magnet steel 23 is located is greater than the inner end width of the first magnetic isolation air gap 24.

[0030] The inner pole of the first N-pole magnetic pole is an inverted V-shaped magnetic pole, which is not connected in the middle. A third rectangular permanent magnet steel 25 with an N-pole outer end face is provided in the right end groove of the inverted V-shaped magnetic pole, and the distance from the inner end point of the left end of the third rectangular permanent magnet steel 25 to the radial center line of the first N-pole magnetic pole is less than 1 mm.

[0031] A second magnetic isolation air gap 26 is provided between the slot where the third rectangular permanent magnet steel 25 is located and the radial rectangular slot on the right side of the first N-pole magnetic pole. The outer end of the second magnetic isolation air gap 26 is a second rectangular magnetic isolation air gap. The outer end of the second rectangular magnetic isolation air gap extends toward the outer circle of the rotor core 5 and is not connected to the outer circle of the rotor core 5.

[0032] The inner ends of the second magnetic isolation air gap 26 are respectively connected to the right end of the slot where the third rectangular permanent magnet 25 is located and the inner end of the radial rectangular slot on the right side of the first N-pole magnetic pole, and the width of the connected parts is smaller than the right end width of the slot where the third rectangular permanent magnet 25 is located and the inner end width of the radial rectangular slot on the right side of the first N-pole magnetic pole.

[0033] The left end of the inverted V-shaped magnetic pole is the third magnetic isolation air gap 22. The inner end of the third magnetic isolation air gap 22 is connected to the inner end of the radial rectangular slot on the left side of the first N-pole magnetic pole, and the width of the connected part is smaller than the inner end width of the radial rectangular slot on the left side of the first N-pole magnetic pole. The outer end point of the third magnetic isolation air gap 22 and the outer end point of the third rectangular permanent magnet 25 are at the same distance from the center of the rotor core 5. The distance between the right end of the third magnetic isolation air gap 22 and the left end of the slot where the third rectangular permanent magnet 25 is located is 1.5 mm.

[0034] The rotor pole adjacent to the first N-pole in the clockwise direction is the first S-pole, and the outer pole of the first S-pole is a positive U-shaped pole. A fourth rectangular permanent magnet steel 27 with a right end face of an S-pole is arranged in the left end slot of the positive U-shaped pole, and the straight line where the right end edge of the fourth rectangular permanent magnet steel 27 is located is parallel to the radial center line of the first S-pole.

[0035] A fifth rectangular permanent magnet steel 28 with an S pole outer end face is arranged in the inner end slot of the positive U-shaped magnetic pole, and the straight line where the outer end edge of the fifth rectangular permanent magnet steel 28 is located is perpendicular to the radial center line of the first S pole magnetic pole. The right end of the positive U-shaped magnetic pole is the fourth magnetic isolation gap 29, and the outer end of the fourth magnetic isolation gap 29 is the third rectangular magnetic isolation gap, and the center line of the length direction of the third rectangular magnetic isolation gap coincides with the radial center line of the first S pole magnetic pole. The inner end of the fourth magnetic isolation gap 29 is connected to the right end of the slot where the fifth rectangular permanent magnet steel 28 is located, and the width of the connected part is smaller than the width of the right end of the slot where the fifth rectangular permanent magnet steel 28 is located.

[0036] A second connected magnetic isolation air gap is provided between the inner end of the slot where the fourth rectangular permanent magnet steel 27 is located and the left end of the slot where the fifth rectangular permanent magnet steel 28 is located. The inner end width of the slot where the fourth rectangular permanent magnet steel 27 is located and the left end width of the slot where the fifth rectangular permanent magnet steel 28 is located are both greater than the widths of both ends of the second connected magnetic isolation air gap.

[0037] The inner magnetic pole of the first S-pole magnetic pole is a pair-shaped magnetic pole, the left end of the pair-shaped magnetic pole is the fifth magnetic isolation gap 7, and the outer end of the fifth magnetic isolation gap 7 is the fourth rectangular magnetic isolation gap. The center line of the fourth rectangular magnetic isolation gap in the length direction coincides with the center line of the first S-pole magnetic pole, and the distance from the outer end of the fourth rectangular magnetic isolation gap to the inner end of the fourth magnetic isolation gap 29 is 2 mm.

[0038] A sixth rectangular permanent magnet steel 6 with an S pole on the left end is provided in the middle slot at the right end of the paired magnetic pole. The right end of the fifth magnetic isolation air gap 7 is connected to the inner end of the slot where the sixth rectangular permanent magnet steel 6 is located, and the width of the connected part is smaller than the inner end width of the slot where the sixth rectangular permanent magnet steel 6 is located.

[0039] The outer end of the slot where the sixth rectangular permanent magnet steel 6 is located is provided with a sixth magnetic isolation air gap 30, and the inner end of the sixth magnetic isolation air gap 30 is connected to the outer end of the slot where the sixth rectangular permanent magnet steel 6 is located, and the width of the connected part is smaller than the width of the outer end of the slot where the sixth rectangular permanent magnet steel 6 is located. The outer end of the sixth magnetic isolation air gap 30 extends toward the outer circle of the rotor core 5 and is not connected to the outer circle of the rotor core 5. The fifth magnetic isolation air gap 7, the slot where the sixth rectangular permanent magnet steel 6 is located, and the sixth magnetic isolation air gap 30 are not connected to the radial rectangular slot on the right side of the first S-pole magnetic pole.

[0040] The rotor pole adjacent to the first S pole in the clockwise direction is the second N pole, and the outer pole of the second N pole is a V-shaped pole. The left end slot of the V-shaped pole is provided with a seventh rectangular permanent magnet steel 17 with an N pole on the right end face, and the right end of the V-shaped pole is a seventh magnetic isolation air gap 32.

[0041] The right end of the seventh magnetic isolation gap 32 is the fifth rectangular magnetic isolation gap, and the center line of the fifth rectangular magnetic isolation gap in the length direction coincides with the radial center line of the second N-pole magnetic pole. The left end of the seventh magnetic isolation gap 32 is connected to the inner end of the slot where the seventh rectangular permanent magnet steel 17 is located, and the width of the connected part is smaller than the inner end width of the slot where the seventh rectangular permanent magnet steel 17 is located.

[0042] The inner magnetic pole of the second N-pole magnetic pole is a straight-line magnetic pole, and the right end slot of the straight-line magnetic pole is provided with an eighth rectangular permanent magnet steel 8 with an N-pole outer end face, and the straight line where the inner end edge of the eighth rectangular permanent magnet steel 8 is located is perpendicular to the radial center line of the second N-pole magnetic pole. The vertical distance between the left end edge of the slot where the eighth rectangular permanent magnet steel 8 is located and the radial center line of the second N-pole magnetic pole is less than 1 mm.

[0043] An eighth magnetic isolation air gap 10 is provided between the slot where the eighth rectangular permanent magnet steel 8 is located and the radial rectangular slot on the right side of the second N-pole magnetic pole, and the outer end of the eighth magnetic isolation air gap 10 is the sixth rectangular magnetic isolation air gap, and the outer end of the sixth rectangular magnetic isolation air gap extends toward the outer circle of the rotor core 5 and is not connected to the outer circle of the rotor core 5. The inner end of the eighth magnetic isolation air gap 10 is respectively connected to the right end of the slot where the eighth rectangular permanent magnet steel 8 is located and the inner end of the radial rectangular slot on the right side of the second N-pole magnetic pole, and the width of the connected parts is smaller than the right end width of the slot where the eighth rectangular permanent magnet steel 8 is located and the inner end width of the radial rectangular slot on the right side of the second N-pole magnetic pole.

[0044] The left end of the straight-line magnetic pole is the ninth magnetic isolation gap 31, and the right end of the ninth magnetic isolation gap 31 is not connected to the left end of the slot where the eighth rectangular permanent magnet steel 8 is located, and the unconnected portion is 1.5 mm. The right end of the ninth magnetic isolation gap 31 is the seventh rectangular magnetic isolation gap, and the straight line where the inner end edge of the seventh rectangular magnetic isolation gap is located coincides with the inner end edge of the slot where the eighth rectangular permanent magnet steel 8 is located. The left end of the ninth magnetic isolation gap 31 is connected to the inner end of the radial rectangular slot on the left side of the second N-pole magnetic pole, and the width of the connected portion is less than the inner end width of the radial rectangular slot on the left side of the second N-pole magnetic pole.

[0045] The rotor pole adjacent to the second N-pole magnetic pole in the clockwise direction is the second S-pole magnetic pole, and the outer pole of the second S-pole magnetic pole is a semicircular annular permanent magnet steel 12, and the inner arc surface of the semicircular annular permanent magnet steel 12 is an S-pole. The inner pole of the second S-pole magnetic pole is an oblique herringbone magnetic pole, and the outer end slot of the oblique herringbone magnetic pole is provided with a ninth rectangular permanent magnet steel 19 with an S-pole outer end face and a tenth rectangular permanent magnet steel 20 with an S-pole left end face in sequence. The straight line where the outer end edge of the ninth rectangular permanent magnet steel 19 is located is perpendicular to the radial center line of the second S-pole magnetic pole, and the vertical distance from the outer end of the tenth rectangular permanent magnet steel 20 to the center line of the second S-pole magnetic pole is greater than the vertical distance from the inner end of the tenth rectangular permanent magnet steel 20 to the center line of the second S-pole magnetic pole.

[0046] A third connected magnetic isolation air gap is provided between the right end of the slot where the ninth rectangular permanent magnet steel 19 is located and the inner end of the slot where the tenth rectangular permanent magnet steel 20 is located, and the right end width of the slot where the ninth rectangular permanent magnet steel 19 is located and the inner end width of the slot where the tenth rectangular permanent magnet steel 20 is located are both greater than the widths of both ends of the third connected magnetic isolation air gap. A tenth magnetic isolation air gap 21 is provided at the outer end of the slot where the tenth rectangular permanent magnet steel 20 is located, and the inner end of the tenth magnetic isolation air gap 21 is connected to the outer end of the slot where the tenth rectangular permanent magnet steel 20 is located, and the inner end width of the tenth magnetic isolation air gap 21 is less than the outer end width of the slot where the tenth rectangular permanent magnet steel 20 is located. The outer end of the tenth magnetic isolation air gap 21 extends toward the outer circle of the rotor core 5 and is not connected to the outer circle of the rotor core 5.

[0047] The inner end of the oblique herringbone magnetic pole is the eleventh magnetic isolation gap 18, the inner end of the eleventh magnetic isolation gap 18 is the eighth rectangular magnetic isolation gap, the center line of the length direction of the eighth rectangular magnetic isolation gap coincides with the radial center line of the second S-pole magnetic pole, the inner end of the eighth rectangular magnetic isolation gap extends to the inner circle of the rotor core 5, and the distance between the inner end of the eighth rectangular magnetic isolation gap and the inner circle of the rotor core 5 is 2mm. The outer end of the eleventh magnetic isolation gap 18 is connected to the left end of the slot where the ninth rectangular permanent magnet steel 19 is located, and the width of the connected part is less than the width of the left end of the slot where the ninth rectangular permanent magnet steel 19 is located.

[0048] The slot where the ninth rectangular permanent magnet steel 19 is located, the slot where the tenth rectangular permanent magnet steel 20 is located, the third connected magnetic isolation air gap and the tenth magnetic isolation air gap 21 are all not connected to the radial rectangular slot on the right side of the second S-pole magnetic pole.

[0049] The outer ends of the first rectangular permanent magnet steel 4, the first magnetic isolation air gap 24, the second magnetic isolation air gap 26, the fourth rectangular permanent magnet steel 27, the fourth magnetic isolation air gap 29, the sixth magnetic isolation air gap 30, the seventh rectangular permanent magnet steel 17, the seventh magnetic isolation air gap 32, the eighth magnetic isolation air gap 10, the semicircular ring-shaped permanent magnet steel 12, the tenth magnetic isolation air gap 21 and the arc-shaped magnetic isolation air gap are all 1.5 mm away from the outer circle of the rotor core 5.

[0050] The magnetic poles adjacent to the second S-pole magnetic pole in the clockwise direction are: the third N-pole magnetic pole with the same structure as the first N-pole magnetic pole, the third S-pole magnetic pole with the same structure as the first S-pole magnetic pole, the fourth N-pole magnetic pole with the same structure as the second N-pole magnetic pole, and the fourth S-pole magnetic pole with the same structure as the second S-pole magnetic pole.

[0051] Therefore, the present invention adopts the above-mentioned asymmetric hybrid pole permanent magnet and electromagnetic hybrid excitation drive motor, and the rotor core of the permanent magnet rotor is designed with multiple slots and magnetic isolation air gaps of different structures, as well as an asymmetric pole structure in which the same pole is asymmetric, adjacent poles are asymmetric, and the magnetic field strength on both sides of adjacent poles is asymmetric. The whole machine has low harmonic content, high output quality, large magnetic adjustment range, and good voltage stabilization performance.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor, characterized in that: It includes a fan, a front cover, a rear cover, a casing, a hybrid excitation rotor and a stator. The fan is arranged on one side of the rear cover, and the casing is arranged between the front cover and the rear cover. The hybrid excitation rotor includes a claw-pole electric excitation rotor, a permanent magnet rotor with an asymmetric hybrid magnetic pole structure, and a magnetic isolation bushing arranged between the claw-pole electric excitation rotor and the permanent magnet rotor. The permanent magnet rotor includes a rotating shaft, a rotor core and eight rotor poles. The rotor core is pressed onto the rotating shaft, and the rotor poles are all arranged on the rotor core.

2. The asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor according to claim 1 is characterized in that: An even number of pairs of radial rectangular slots are evenly distributed on the permanent magnet rotor, and arc-shaped magnetic isolation air gaps are arranged at the outer ends of the radial rectangular slots. The width of the arc-shaped magnetic isolation air gap is equal to the width of the radial rectangular slots, and the arc-shaped magnetic isolation air gap is not connected to the outer circle of the rotor core. Radial permanent magnet steels are placed in the radial rectangular slots in a manner that the opposite surfaces have the same magnetic properties, and two adjacent radial permanent magnet steels form two side magnetic poles, and an outer magnetic pole and an inner magnetic pole are arranged in the middle of the two side magnetic poles; The outer magnetic pole is close to the outer circle of the rotor core and is not connected with the outer circle of the rotor core, and the inner magnetic pole is close to the inner circle of the rotor core and is not connected with the inner circle of the rotor core.

3. The asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor according to claim 2 is characterized in that: Each rotor magnetic pole is composed of two side magnetic poles and an outer magnetic pole and an inner magnetic pole between the two side magnetic poles; The permanent magnets of the outer magnetic poles are all arranged on the left side of the radial center line of the rotor magnetic poles, and the permanent magnets of the inner magnetic poles are all arranged on the right side of the radial center line of the rotor magnetic poles; There is no connection between the outer magnetic pole and the inner magnetic pole in each rotor magnetic pole, and between the magnetic poles on both sides.

4. The asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor according to claim 3 is characterized in that: The angle occupied by the outer magnetic field on the left side of each rotor pole corresponding to the outer circle of the rotor core is greater than the angle occupied by the magnetic fields on both sides of the left side of the rotor pole corresponding to the outer circle of the rotor core, and the angle occupied by the inner magnetic field on the right side of each rotor pole corresponding to the outer circle of the rotor core is greater than the angle occupied by the magnetic fields on both sides of the right side of the rotor pole corresponding to the outer circle of the rotor core.

5. The asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor according to claim 4 is characterized in that: A first N-pole magnetic pole is formed between two adjacent radial permanent magnets whose opposite surfaces are N-pole magnetic poles, the outer magnetic pole of the first N-pole magnetic pole is an oblique U-shaped magnetic pole, a first rectangular permanent magnet steel whose right end face is N-pole is arranged in the groove at the left end of the oblique U-shaped magnetic pole, and a vertical distance from the outer end of the first rectangular permanent magnet steel to the radial center line of the first N-pole magnetic pole is greater than a vertical distance from the inner end of the first rectangular permanent magnet steel to the radial center line of the first N-pole magnetic pole; A second rectangular permanent magnet steel having an N-pole outer end face is arranged in the inner end slot of the inclined U-shaped magnetic pole, the straight line where the outer end edge of the second rectangular permanent magnet steel is located is perpendicular to the radial center line of the first N-pole magnetic pole, a first connected magnetic isolation air gap is arranged between the inner end of the slot where the first rectangular permanent magnet steel is located and the left end of the slot where the second rectangular permanent magnet steel is located, and the inner end width of the slot where the first rectangular permanent magnet steel is located and the left end width of the slot where the second rectangular permanent magnet steel is located are both greater than the widths of both ends of the first connected magnetic isolation air gap; The right end of the oblique U-shaped magnetic pole is the first magnetic isolation air gap, the outer end of the first magnetic isolation air gap is the first rectangular magnetic isolation air gap, the center line of the first rectangular magnetic isolation air gap in the length direction coincides with the radial center line of the first N-pole magnetic pole, the right end of the slot where the second rectangular permanent magnet steel is located is connected to the inner end of the first magnetic isolation air gap, and the right end width of the slot where the second rectangular permanent magnet steel is located is greater than the inner end width of the first magnetic isolation air gap; The inner magnetic pole of the first N-pole magnetic pole is an inverted V-shaped magnetic pole, the middle of the inverted V-shaped magnetic pole is not connected, and a third rectangular permanent magnetic steel with an N-pole outer end face is provided in the right end groove of the inverted V-shaped magnetic pole, and the distance from the inner end point of the left end of the third rectangular permanent magnetic steel to the radial center line of the first N-pole magnetic pole is less than 1 mm; A second magnetic isolation air gap is provided between the slot where the third rectangular permanent magnet steel is located and the radial rectangular slot on the right side of the first N-pole magnetic pole, the outer end of the second magnetic isolation air gap is the second rectangular magnetic isolation air gap, the outer end of the second rectangular magnetic isolation air gap extends toward the outer circle of the rotor core and is not connected to the outer circle of the rotor core; The inner end of the second magnetic isolation air gap is connected to the right end of the slot where the third rectangular permanent magnet is located and the inner end of the radial rectangular slot on the right side of the first N-pole magnetic pole, respectively, and the width of the connected parts is smaller than the right end width of the slot where the third rectangular permanent magnet is located and the inner end width of the radial rectangular slot on the right side of the first N-pole magnetic pole; The left end of the inverted V-shaped magnetic pole is a third magnetic isolation air gap, the inner end of the third magnetic isolation air gap is connected to the inner end of the radial rectangular groove on the left side of the first N-pole magnetic pole, and the width of the connected part is smaller than the inner end width of the radial rectangular groove on the left side of the first N-pole magnetic pole; The distances from the outer end point of the third magnetic isolation air gap and the outer end point of the third rectangular permanent magnet to the center of the rotor core are equal, and the distance between the right end of the third magnetic isolation air gap and the left end of the slot where the third rectangular permanent magnet 25 is located is 1.5 mm.

6. The asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor according to claim 5, characterized in that: The rotor magnetic pole adjacent to the first N-pole magnetic pole in the clockwise direction is the first S-pole magnetic pole, and the outer magnetic pole of the first S-pole magnetic pole is a positive U-shaped magnetic pole; A fourth rectangular permanent magnet steel having an S pole as the right end face is arranged in the left end slot of the positive U-shaped magnetic pole, and the straight line where the right end edge of the fourth rectangular permanent magnet steel lies is parallel to the radial center line of the first S pole magnetic pole; A fifth rectangular permanent magnet steel having an S-pole outer end face is arranged in the inner end slot of the positive U-shaped magnetic pole, and the straight line where the outer end edge of the fifth rectangular permanent magnet steel lies is perpendicular to the radial center line of the first S-pole magnetic pole; The right end of the positive U-shaped magnetic pole is the fourth magnetic isolation air gap, the outer end of the fourth magnetic isolation air gap is the third rectangular magnetic isolation air gap, and the center line of the third rectangular magnetic isolation air gap in the length direction coincides with the radial center line of the first S-pole magnetic pole; The inner end of the fourth magnetic isolation air gap is connected to the right end of the slot where the fifth rectangular permanent magnet steel is located, and the width of the connected portion is smaller than the width of the right end of the slot where the fifth rectangular permanent magnet steel is located; A second connected magnetic isolation air gap is provided between the inner end of the slot where the fourth rectangular permanent magnet steel is located and the left end of the slot where the fifth rectangular permanent magnet steel is located, and the inner end width of the slot where the fourth rectangular permanent magnet steel is located and the left end width of the slot where the fifth rectangular permanent magnet steel is located are both greater than the widths of both ends of the second connected magnetic isolation air gap; The inner magnetic pole of the first S-pole magnetic pole is a pair-shaped magnetic pole, the left end of the pair-shaped magnetic pole is the fifth magnetic isolation air gap, and the outer end of the fifth magnetic isolation air gap is the fourth rectangular magnetic isolation air gap; The center line of the fourth rectangular magnetic isolation gap in the length direction coincides with the center line of the first S-pole magnetic pole, and the distance from the outer end of the fourth rectangular magnetic isolation gap to the inner end of the fourth magnetic isolation gap is 2 mm; A sixth rectangular permanent magnet steel having an S pole on its left end is arranged in the middle slot at the right end of the pair-shaped magnetic pole, and the right end of the fifth magnetic isolation air gap is connected to the inner end of the slot where the sixth rectangular permanent magnet steel is located, and the width of the connected portion is smaller than the inner end width of the slot where the sixth rectangular permanent magnet steel is located; A sixth magnetic isolation air gap is provided at the outer end of the slot where the sixth rectangular permanent magnet steel is located, and an inner end of the sixth magnetic isolation air gap is connected to the outer end of the slot where the sixth rectangular permanent magnet steel is located, and a width of the connected portion is smaller than a width of the outer end of the slot where the sixth rectangular permanent magnet steel is located; The outer end of the sixth magnetic isolation air gap extends toward the outer circle of the rotor core and is not connected to the outer circle of the rotor core; The fifth magnetic isolation air gap, the slot where the sixth rectangular permanent magnet steel is located and the sixth magnetic isolation air gap are not connected to the radial rectangular slot on the right side of the first S-pole magnetic pole.

7. The asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor according to claim 6, characterized in that: The rotor magnetic pole adjacent to the first S-pole magnetic pole in the clockwise direction is the second N-pole magnetic pole, and the outer magnetic pole of the second N-pole magnetic pole is a V-shaped magnetic pole; A seventh rectangular permanent magnet steel with an N-pole on the right end face is arranged in the left end slot of the V-shaped magnetic pole, and the right end of the V-shaped magnetic pole is a seventh magnetic isolation air gap; The right end of the seventh magnetic isolation air gap is the fifth rectangular magnetic isolation air gap, and the center line of the fifth rectangular magnetic isolation air gap in the length direction coincides with the radial center line of the second N-pole magnetic pole; The left end of the seventh magnetic isolation air gap is connected to the inner end of the slot where the seventh rectangular permanent magnet is located, and the width of the connected portion is smaller than the width of the inner end of the slot where the seventh rectangular permanent magnet is located; The inner magnetic pole of the second N-pole magnetic pole is a straight-line magnetic pole, and an eighth rectangular permanent magnet steel with an N-pole outer end face is arranged in the right end slot of the straight-line magnetic pole, and the straight line where the inner end edge of the eighth rectangular permanent magnet steel is located is perpendicular to the radial center line of the second N-pole magnetic pole; The vertical distance between the left end of the slot where the eighth rectangular permanent magnet is located and the radial center line of the second N-pole magnetic pole is less than 1 mm; An eighth magnetic isolation air gap is provided between the slot where the eighth rectangular permanent magnet steel is located and the radial rectangular slot on the right side of the second N-pole magnetic pole, the outer end of the eighth magnetic isolation air gap is the sixth rectangular magnetic isolation air gap, the outer end of the sixth rectangular magnetic isolation air gap extends toward the outer circle of the rotor core and is not connected to the outer circle of the rotor core; The inner end of the eighth magnetic isolation air gap is connected to the right end of the slot where the eighth rectangular permanent magnet is located and the inner end of the radial rectangular slot on the right side of the second N-pole magnetic pole, respectively, and the width of the connected parts is smaller than the right end width of the slot where the eighth rectangular permanent magnet is located and the inner end width of the radial rectangular slot on the right side of the second N-pole magnetic pole; The left end of the straight-line magnetic pole is the ninth magnetic isolation air gap, and the right end of the ninth magnetic isolation air gap is not connected to the left end of the slot where the eighth rectangular permanent magnet steel is located, and the unconnected portion is 1.5 mm; The right end of the ninth magnetic isolation air gap is the seventh rectangular magnetic isolation air gap, and the straight line where the inner end edge of the seventh rectangular magnetic isolation air gap is located coincides with the inner end edge of the slot where the eighth rectangular permanent magnet steel is located; The left end of the ninth magnetic isolation air gap is connected to the inner end of the radial rectangular groove on the left side of the second N-pole magnetic pole, and the width of the connected portion is smaller than the inner end width of the radial rectangular groove on the left side of the second N-pole magnetic pole.

8. The asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor according to claim 7, characterized in that: The rotor magnetic pole adjacent to the second N-pole magnetic pole in the clockwise direction is the second S-pole magnetic pole, the outer magnetic pole of the second S-pole magnetic pole is a semicircular ring-shaped permanent magnetic steel, and the inner arc surface of the semicircular ring-shaped permanent magnetic steel is the S pole; The inner magnetic pole of the second S-pole magnetic pole is an oblique herringbone magnetic pole, and the outer end slot of the oblique herringbone magnetic pole is provided with a ninth rectangular permanent magnetic steel with an S-pole outer end face and a tenth rectangular permanent magnetic steel with an S-pole left end face in sequence; The straight line where the outer end of the ninth rectangular permanent magnet is located is perpendicular to the radial center line of the second S-pole magnetic pole, and the vertical distance from the outer end of the tenth rectangular permanent magnet to the center line of the second S-pole magnetic pole is greater than the vertical distance from the inner end of the tenth rectangular permanent magnet to the center line of the second S-pole magnetic pole; A third connected magnetic isolation air gap is provided between the right end of the slot where the ninth rectangular permanent magnet steel is located and the inner end of the slot where the tenth rectangular permanent magnet steel is located, and the width of the right end of the slot where the ninth rectangular permanent magnet steel is located and the width of the inner end of the slot where the tenth rectangular permanent magnet steel is located are both greater than the widths of both ends of the third connected magnetic isolation air gap; A tenth magnetic isolation air gap is provided at the outer end of the slot where the tenth rectangular permanent magnet steel is located, an inner end of the tenth magnetic isolation air gap is connected to the outer end of the slot where the tenth rectangular permanent magnet steel is located, and a width of the inner end of the tenth magnetic isolation air gap is smaller than a width of the outer end of the slot where the tenth rectangular permanent magnet steel is located; The outer end of the tenth magnetic isolation air gap extends toward the outer circle of the rotor core and is not connected with the outer circle of the rotor core; The inner end of the oblique herringbone magnetic pole is the eleventh magnetic isolation air gap, the inner end of the eleventh magnetic isolation air gap is the eighth rectangular magnetic isolation air gap, the center line of the eighth rectangular magnetic isolation air gap in the length direction coincides with the radial center line of the second S-pole magnetic pole, the inner end of the eighth rectangular magnetic isolation air gap extends toward the inner circle of the rotor core, and the distance between the inner end of the eighth rectangular magnetic isolation air gap and the inner circle of the rotor core is 2 mm; The outer end of the eleventh magnetic isolation air gap is connected to the left end of the slot where the ninth rectangular permanent magnet is located, and the width of the connected portion is smaller than the width of the left end of the slot where the ninth rectangular permanent magnet is located; The ninth rectangular permanent magnet slot, the tenth rectangular permanent magnet slot, the third connected magnetic isolation air gap and the tenth magnetic isolation air gap are not connected to the radial rectangular slot on the right side of the second S-pole magnetic pole; The outer ends of the first rectangular permanent magnet steel, the first magnetic isolation air gap, the second magnetic isolation air gap, the fourth rectangular permanent magnet steel, the fourth magnetic isolation air gap, the sixth magnetic isolation air gap, the seventh rectangular permanent magnet steel, the seventh magnetic isolation air gap, the eighth magnetic isolation air gap, the semicircular ring permanent magnet steel, the tenth magnetic isolation air gap and the arc-shaped magnetic isolation air gap are all 1.5 mm away from the outer circle of the rotor core.

9. The asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor according to claim 8, characterized in that: The outer magnetic pole and the inner magnetic pole are different and both are composed of NdFeB permanent magnet steel, and the two side magnetic poles are the same and are composed of ferrite permanent magnet steel.

10. The asymmetric hybrid magnetic pole permanent magnet and electromagnetic hybrid excitation drive motor according to claim 9, characterized in that: The magnetic poles adjacent to the second S-pole magnetic pole in the clockwise direction are: the third N-pole magnetic pole with the same structure as the first N-pole magnetic pole, the third S-pole magnetic pole with the same structure as the first S-pole magnetic pole, the fourth N-pole magnetic pole with the same structure as the second N-pole magnetic pole, and the fourth S-pole magnetic pole with the same structure as the second S-pole magnetic pole.

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