CN215071846U - Rhombus rotor subassembly and rhombus rotor brushless generator - Google Patents

Abstract

The utility model relates to the technical field of generators, in particular to a rhombic rotor assembly, which comprises a rotating shaft, a rhombic magnetic pole and an annular magnetic pole, wherein the rhombic magnetic pole comprises a magnetic pole ring, a connecting ring plate and a plurality of polar palm blocks, the magnetic pole ring is in a circular tube shape, the connecting ring plate is sleeved on the magnetic pole ring, and the plurality of polar palm blocks are circumferentially distributed along the connecting ring plate; the magnetic pole ring, the connecting ring plate and the pole palm blocks are all located inside the annular magnetic pole, a plurality of pole palm holes are formed in the side wall of the annular magnetic pole and are circumferentially distributed along the annular magnetic pole and are in one-to-one correspondence with the pole palm blocks, the pole palm blocks are inserted into the pole palm holes, and the pole palm blocks are fixedly connected with the annular magnetic pole. The utility model discloses a rhombus rotor subassembly can improve the generating efficiency of generator through the magnetic leakage flux that reduces the rotor magnetic pole.

Description

Rhombus rotor subassembly and rhombus rotor brushless generator

Technical Field

The utility model relates to a generator technical field especially relates to a rhombus rotor subassembly and rhombus rotor brushless generator.

Background

At present, automobile generators are generally divided into two types, one is a brush generator, and the other is a brushless generator. The brush generator has the advantages that the carbon brush of the brush generator is easy to wear and needs to be maintained or replaced regularly, the service life is short, the maintenance cost is high, the brushless generator is free of the electric brush and the slip ring, so that the faults that excitation is unstable or the generator does not generate electricity and the like due to poor contact and wear of the electric brush and the slip ring are avoided, no electric spark is generated during working, and the interference of radio is reduced. Brushless motors are clearly the best choice for certain types of vehicles with stringent requirements for electromagnetic interference.

The common brushless generator is a brushless generator with a claw-pole type rotor, and the structure is simple and widely used, so that the structure of the existing claw-pole type brushless generator comprises a stator, the claw-pole type brushless rotor, a generator shell and the like; the claw-pole brushless rotor comprises a first claw pole and a second claw pole which are mutually staggered. When generating electricity, the magnetic field generated by energizing the excitation winding forms a magnetic loop through the first claw pole of the rotor, the gap, the stator, the gap, the second claw pole of the rotor, the rotor spindle and the first claw pole of the rotor.

However, when the magnetic flux passes through the first claw pole and the second claw pole, the polarities of the magnetic fields at the first claw pole and the second claw pole are opposite to each other, and therefore a large leakage flux is generated between the first claw pole and the second claw pole. As the generator output increases, the required excitation increases and the leakage flux also increases, and therefore, the leakage flux greatly affects the output efficiency of the motor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the lower technical problem of output efficiency of claw pole formula generator among the prior art, the utility model provides a rhombus rotor subassembly and rhombus rotor brushless generator can be through the magnetic leakage flux that reduces the rotor magnetic pole to improve the generating efficiency of generator.

The utility model provides a technical scheme that its technical problem adopted is: the diamond-shaped rotor assembly comprises a rotating shaft and further comprises:

the diamond-shaped magnetic pole comprises a magnetic pole ring, a connecting ring plate and a plurality of pole palm blocks, wherein the magnetic pole ring is in a circular tube shape, the magnetic pole ring is sleeved on the rotating shaft and fixedly connected with the rotating shaft, the connecting ring plate is sleeved on the magnetic pole ring and fixedly connected with the magnetic pole ring, the plurality of pole palm blocks are distributed along the circumferential direction of the connecting ring plate, and the pole palm blocks are fixedly connected with the connecting ring plate;

the annular magnetic pole is of a tubular structure, the central axis of the annular magnetic pole is parallel to or coincided with the central axis of the magnetic pole ring, the connecting ring plate and the pole palm blocks are all located inside the annular magnetic pole, a plurality of pole palm holes are formed in the side wall of the annular magnetic pole, the pole palm holes are distributed along the circumferential direction of the annular magnetic pole and correspond to the pole palm blocks one by one, the pole palm blocks are inserted into the pole palm holes, and the pole palm blocks are fixedly connected with the annular magnetic pole.

The utility model discloses a rhombus rotor subassembly, the magnetic pole of rotor is regarded as to the rhombus magnetic pole, and annular magnetic pole is as another magnetic pole of rotor, and the magnetic pole polarity at annular magnetic pole both ends is the same, because annular magnetic pole surrounds the rhombus magnetic pole, and during the utmost point palm piece was pegged graft into utmost point palm hole, the magnetic field intensity near utmost point palm piece was close to more is stronger to on the magnetic induction line between annular magnetic pole and the rhombus magnetic pole can collect the rhombus magnetic pole, thereby reduce the magnetic flux that the rotor leaked.

Further, the diameter of the most middle of the ring-shaped magnetic pole is the largest, and the diameter of the ring-shaped magnetic pole is gradually reduced from the middle to two axial ends.

Further, the annular magnetic pole comprises a first annular claw pole and a second annular claw pole, the first annular claw pole and the second annular claw pole are both conical tubular structures, the first annular claw pole and the second annular claw pole are arranged in line along the axial direction of the magnetic pole ring, the first annular claw pole and the second annular claw pole are coaxially arranged, one end of the first annular claw pole close to the second annular claw pole is provided with a plurality of first pole palm gaps which are arranged along the circumferential direction of the first annular claw pole, one end of the second annular claw pole close to the first annular claw pole is provided with a plurality of second polar palm gaps which are arranged along the circumferential direction of the second annular claw pole, the first pole palm notch and the second pole palm notch are in one-to-one correspondence, the first annular claw pole and the second annular claw pole are fixedly connected to form an annular magnetic pole, and the first pole palm notch and the second pole palm notch form the pole palm hole. The annular magnetic poles are arranged into the first annular claw pole and the second annular claw pole, the pole palm blocks are convenient to install into the pole palm holes, the magnetic poles of the magnet exciting coils generated on the first annular claw pole and the second annular claw pole are the same in polarity, the rhombic magnetic poles are public magnetic poles of the first annular claw pole and the second annular claw pole, and compared with two claw poles different in polarity which are arranged in a staggered mode, the magnetic potential and the magnetic flux generated by the first annular claw pole and the second annular claw pole and the rhombic magnetic poles are correspondingly increased obviously, so that the output power of the motor is greatly improved.

Further, the first annular claw pole and the second annular claw pole are fixedly connected through welding materials in a welding mode, and the welding materials, the first annular claw pole and the second annular claw pole are made of the same materials.

Furthermore, the two ends of the pole palm block in the length direction are fixedly connected with the annular magnetic pole through connecting strips, one end of each connecting strip is fixedly connected with the pole palm block, the other end of each connecting strip is fixedly connected with the annular magnetic pole, and each connecting strip is made of a non-magnetic-conductive material.

Furthermore, the pole palm blocks are fixedly connected with the annular magnetic pole through an annular connecting piece, the annular connecting piece is arranged inside the annular magnetic pole, the pole palm blocks are fixedly connected with the annular connecting piece, the outer side face of the annular connecting piece is in contact with the inner side face of the annular magnetic pole, and the annular connecting piece is fixedly connected with the annular magnetic pole.

Further, the length direction of the pole palm block is parallel to the axis of the annular magnetic pole, two end faces of the pole palm block in the length direction are provided with first inclined planes, the first inclined planes are gradually close to the center of the pole palm block from one end of the pole palm block, which is far away from the magnetic pole ring, to one end of the pole palm block, which is close to the magnetic pole ring, the two end faces of the pole palm hole in the length direction are provided with second inclined planes, and the second inclined planes are parallel to the first inclined planes.

The utility model also provides a rhombus rotor brushless generator including rhombus rotor subassembly, still include

The rhombic rotor assembly is arranged in the generator shell, and the rotating shaft penetrates through two side surfaces of the generator shell and is rotationally connected with the generator shell;

the two excitation coils are arranged in the length direction of the rotating shaft and are arranged on two sides of the connecting ring plate, the two excitation coils are fixedly connected with the shell of the generator, mounting holes are formed in the two excitation coils and are arranged along the axial direction of the magnetic pole ring, two ends of the magnetic pole ring are inserted into the mounting holes, a first air gap is formed between each excitation coil and the magnetic pole ring, a second air gap is formed between the side face, close to the connecting ring plate, of each excitation coil and the end face of the connecting ring plate, a third air gap is formed between the end face, far away from the magnetic pole ring, of each excitation coil and the inner side face of the annular magnetic pole, an excitation winding is wound on each excitation coil, and the excitation coils and the excitation windings are located inside the annular magnetic pole;

the stator is arranged in the generator shell, the side face, far away from the generator shell, of the stator covers the side face, far away from the magnetic pole ring, of the pole palm block, the stator is fixedly connected with the generator shell, and a gap is formed between the stator and the pole palm block.

The utility model discloses a brushless generator with rhombic rotor, surround the rhombic magnetic pole through ring magnetic pole, the side that the generator shell was kept away from to the stator covers the side that the magnetic pole ring was kept away from to the utmost point palm piece, thereby it is great to make the quantity of the line is felt to the magnetism that passes the stator, thereby improve the generating efficiency of generator, and the rhombus rotor subassembly has adopted two excitation coils, it has reduced single coil excitation load, reduce single excitation coil internal resistance, the calorific capacity of excitation coil has been reduced, thereby the insulating ageing speed of excitation coil slows down, avoid excitation coil to be burnt out because of the high temperature, thereby increase excitation coil's life, and then improve the life of generator.

Further, the width of the gap is 0.35-0.5 mm. The gap is used for ensuring that the rotor can freely rotate in the stator cavity, and the size of the gap has great influence on the performance and the operation reliability of the generator. If the gap between the stator and the pole palm block is too large, the magnetic resistance between the stator and the pole palm block is increased, the excitation loss is increased, the power generation efficiency of the generator is reduced, but if the gap is too small, the gap harmonic magnetic field is increased, the noise of the generator is increased, and meanwhile, if the gap is too small, the stator and the pole palm block are easy to collide. In addition, too small a gap also presents difficulties in assembly.

Furthermore, the end face of the stator along the length direction of the rotating shaft is flush with the end face of the pole palm block along the length direction.

The beneficial effects of the utility model are that, surround the rhombus magnetic pole through the ring magnetic pole, the magnetism of one of them magnetic pole of excitation coil is conducted on the rhombus magnetic pole, thereby make the rhombus magnetic pole become a magnetic pole of rotor, the magnetism of another magnetic pole of excitation coil is conducted on the ring magnetic pole, make the ring magnetic pole become another magnetic pole of rotor, because the ring magnetic pole surrounds the rhombus magnetic pole, the magnetic pole polarity at ring magnetic pole both ends is the same, the side that the generator shell was kept away from to the stator covers the side that the magnetic pole palm piece kept away from the magnetic pole ring, thereby make the quantity of the magnetic induction line that passes the stator great, thereby reduce the magnetic flux that leaks, thereby improve the generating efficiency of generator;

the annular magnetic poles are arranged into the first annular claw pole and the second annular claw pole, so that the pole palm block can be conveniently installed in the pole palm hole, the magnetic poles generated by the exciting coil on the first annular claw pole and the second annular claw pole are the same in polarity, the rhombic magnetic pole is a common magnetic pole of the first annular claw pole and the second annular claw pole, and compared with two claw poles with different polarities arranged in a staggered mode, the magnetic potential and the magnetic flux generated by the first annular claw pole and the second annular claw pole and the rhombic magnetic pole are correspondingly and obviously increased, and therefore the output power of the motor is greatly improved;

the rhombic rotor component adopts two magnet exciting coils, reduces the excitation load of a single coil, reduces the internal resistance of the single magnet exciting coil, and reduces the heat productivity of the magnet exciting coil, thereby slowing down the insulating aging speed of the magnet exciting coil, avoiding the magnet exciting coil from being burnt out due to overhigh temperature, prolonging the service life of the magnet exciting coil and further prolonging the service life of the generator.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a rhombic rotor assembly according to the present invention.

Fig. 2 is a schematic top view of a diamond rotor assembly according to the present invention.

Fig. 3 is a cross-sectional view a-a of fig. 2.

Fig. 4 is an enlarged view at a in fig. 3.

Fig. 5 is a cross-sectional view B-B of fig. 2.

Fig. 6 is a schematic diagram of a magnetic circuit of a brushless generator with a rhombic rotor according to the present invention.

Fig. 7 is a schematic magnetic circuit diagram of a claw-pole generator according to a comparative example in an embodiment of the present invention.

In the figure: 1. a rotating shaft; 2. a diamond-shaped magnetic pole; 3. a magnetic pole ring; 4. a connecting ring plate; 5. a pole palm block; 6. a field coil; 7. an excitation winding; 8. a ring-shaped magnetic pole; 9. a pole palm hole; 10. a first annular claw pole; 11. a second annular claw pole; 12. a first pole leg notch; 13. a second palm notch; 14. welding materials; 15. a connecting strip; 16. a first inclined surface; 17. a second inclined surface; 18. a generator housing; 19. a stator; 20. a gap; 21. an annular connector; 22. a first air gap; 23. a second air gap; 24. a third air gap.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b): as shown in fig. 1 to 5, a brushless generator with a rhombic rotor comprises a rhombic rotor assembly, a generator housing 18, a stator 19 and two excitation coils 6, wherein the rhombic rotor assembly is installed in the generator housing 18 and comprises a rotating shaft 1, a rhombic magnetic pole 2 and a ring-shaped magnetic pole 8, the rotating shaft 1 penetrates through two side faces of the generator housing 18 and is rotatably connected with the generator housing 18, the stator 19 is arranged inside the generator housing 18, and the stator 19 is fixedly connected with the generator housing 18.

The rhombic magnetic pole 2 comprises a magnetic pole ring 3, a connecting ring plate 4 and a plurality of pole palm blocks 5, the magnetic pole ring 3, 08 steel can be selected for use as the material of the connecting ring plate 4 and the pole palm blocks 5, the magnetic pole ring 3 is in a circular tube shape, the magnetic pole ring 3 is sleeved on the rotating shaft 1 and is fixedly connected with the rotating shaft 1, the connecting ring plate 4 is sleeved on the magnetic pole ring 3 and is fixedly connected with the magnetic pole ring 3, the pole palm blocks 5 are circumferentially arranged along the connecting ring plate 4, the pole palm blocks 5 are fixedly connected with the connecting ring plate 4, the side face, far away from the generator shell 18, of the stator 19 covers the side face, far away from the magnetic pole palm blocks 3, of the stator 19 is flush with the end face, in the length direction of the rotating shaft 1, in the length direction of the pole palm blocks 5, a gap 20 is formed between the stator 19 and the pole palm blocks 5, and the width of the gap 20 is 0.35-0.5 mm. The gap 20 is to ensure the rotor to rotate freely in the stator 19 cavity, and the size of the gap 20 has a great influence on the performance and the operational reliability of the generator. If the gap 20 between the stator 19 and the pole piece block 5 is too large, the magnetic resistance between the stator 19 and the pole piece block 5 increases, the excitation loss increases, and the power generation efficiency of the generator decreases, but if the gap 20 is too small, the harmonic magnetic field of the gap 20 increases, and the noise of the generator increases, and if the gap 20 is too small, the stator 19 and the pole piece block 5 easily collide with each other. In addition, too small a gap 20 also presents difficulties in assembly.

The ring-shaped magnetic pole 8 is of a tubular structure, the central axis of the ring-shaped magnetic pole 8 is parallel to or coincided with the central axis of the magnetic pole ring 3, the diameter of the middle of the ring-shaped magnetic pole 8 is the largest, and the diameter of the ring-shaped magnetic pole 8 is gradually reduced from the middle to the two axial ends. The magnetic pole ring 3, the excitation coil 6 and the excitation winding 7 are all positioned inside the annular magnetic pole 8, the side wall of the annular magnetic pole 8 is provided with a plurality of pole palm holes 9, the plurality of pole palm holes 9 are distributed along the circumferential direction of the annular magnetic pole 8 and correspond to the pole palm blocks 5 one by one, the pole palm blocks 5 are inserted into the pole palm holes 9, a space is arranged between the inner side walls of the pole palm blocks 5 and the pole palm holes 9, the pole palm blocks 5 and the annular magnetic pole 8 are fixedly connected through non-magnetic conductive pieces, the non-magnetic conductive pieces can be connecting strips 15, both ends of the length direction of the pole palm blocks 5 are fixedly connected with the annular magnetic pole 8 through the connecting strips 15, one end of the connecting strips 15 is fixedly connected with the pole palm blocks 5, the other end of the connecting strips 15 is fixedly connected with the annular magnetic pole 8, the connecting strips 15 are non-magnetic conductive materials, the non-magnetic conductive pieces can also be annular connecting pieces (21), and the pole palm blocks 5 are fixedly connected with the annular magnetic pole 8 through annular connecting pieces (21), the annular connecting piece (21) is arranged inside the annular magnetic pole (8), the plurality of pole shoe blocks (5) are fixedly connected with the annular connecting piece (21), the outer side surface of the annular connecting piece (21) is in contact with the inner side surface of the annular magnetic pole (8), the annular connecting piece (21) is fixedly connected with the annular magnetic pole (8), and the annular connecting piece (21) is made of a non-magnetic-conductive material.

Two excitation coils 6 are arranged along the length direction of the rotating shaft 1, two excitation coils 6 are arranged on two sides of the connecting ring plate 4, two excitation coils 6 are fixedly connected with a generator shell 18, mounting holes are formed in the two excitation coils 6 and are axially arranged along the magnetic pole rings 3, two ends of each magnetic pole ring 3 are inserted into the mounting holes, a first air gap 22 is formed between each excitation coil 6 and each magnetic pole ring 3, a second air gap 23 is formed between the side face, close to the connecting ring plate 4, of each excitation coil 6 and the end face of the connecting ring plate 4, a third air gap 24 is formed between the end face, far away from the magnetic pole rings 3, of each excitation coil 6 and the inner side face of the annular magnetic pole 8, excitation windings 7 are arranged on the excitation coils 6 in a winding mode, and the excitation windings 6 and the excitation windings 7 are located inside the annular magnetic pole 8.

The length direction of the pole palm block 5 is parallel to the axis of the annular magnetic pole 8, two end faces of the pole palm block 5 in the length direction are provided with first inclined planes 16, the first inclined planes 16 are gradually close to the center of the pole palm block 5 from one end of the pole palm block 5 far away from the magnetic pole ring 3 to one end of the pole palm block 5 close to the magnetic pole ring 3, two end faces of the pole palm hole 9 in the length direction are provided with second inclined planes 17, the second inclined planes 17 are parallel to the first inclined planes 16,

the annular magnetic pole 8 comprises a first annular claw pole 10 and a second annular claw pole 11, the first annular claw pole 10 and the second annular claw pole 11 are both conical tubular structures, the first annular claw pole 10 and the second annular claw pole 11 are arranged along the axial direction of the magnetic pole ring 3, the first annular claw pole 10 and the second annular claw pole 11 are coaxially arranged, one end of the first annular claw pole 10, which is close to the second annular claw pole 11, is provided with a plurality of first pole palm notches 12, the plurality of first pole palm notches 12 are arranged along the circumferential direction of the first annular claw pole 10, one end of the second annular claw pole 11, which is close to the first annular claw pole 10, is provided with a plurality of second pole palm notches 13, the plurality of second pole palm notches 13 are arranged along the circumferential direction of the second annular claw pole 11, the first pole palm notches 12 correspond to the second pole palm notches 13 one by one, the first annular claw pole 10 and the second annular claw pole 11 are fixedly connected to form an annular claw pole 8, and the first annular claw pole 10 and the second annular claw pole 11 are fixedly connected by welding materials 14, the welding material 14, the first annular claw pole 10 and the second annular claw pole 11 are made of the same material, and the first pole leg notch 12 and the second pole leg notch 13 form the pole leg hole 9. The annular magnetic pole 8 is set into the first annular claw pole 10 and the second annular claw pole 11, so that the pole palm block 5 can be conveniently installed in the pole palm hole 9, the magnetic poles of the excitation coil 6 generated on the first annular claw pole 10 and the second annular claw pole 11 are the same in polarity, the rhombic magnetic pole 2 is a common magnetic pole of the first annular claw pole 10 and the second annular claw pole 11, and compared with two claw poles with different polarities arranged in a staggered mode, the magnetic potential and the magnetic flux generated by the first annular claw pole 10, the second annular claw pole 11 and the rhombic magnetic pole 2 are correspondingly obviously increased, and therefore the output power of the motor is greatly improved.

Referring to fig. 3 and 6, when a current is applied to the exciting coil 6, the exciting coil 6 generates magnetism, the left-side exciting coil 6 generates a magnetic pole having an S-pole as a left-end magnetic pole, the right-side exciting coil 6 generates a magnetic pole having an N-pole as a right-end magnetic pole, the left-side exciting coil 6 generates a magnetic pole having an N-pole as a left-end magnetic pole, the right-side exciting coil 6 generates a magnetic pole having an S-pole as a right-end magnetic pole, the two left and right field coils 6 thus conduct the magnetic poles to the rhombic magnetic poles 2, so that the magnetic poles of the rhombic magnetic poles 2 are N-poles, and the magnetic pole of the excitation coil 6 is conducted to the annular magnetic pole 8, so that the magnetic poles at both ends of the annular magnetic pole 8 are S poles, the magnetic pole of the excitation coil 6 can be changed by changing the direction of the current introduced by the excitation coil 6, therefore, the polarities of the diamond magnetic pole 2 and the annular magnetic pole 8 are changed, and the polarities of the two ends of the annular magnetic pole 8 are ensured to be the same.

Referring to fig. 6, the magnetic circuit of the rhombic rotor assembly of the present invention is: the pole piece block 5 → the gap 20 → the stator 19 → the gap 20 → the ring-shaped magnetic pole 8 → the field coil 6 → the magnetic pole ring 3 → the connecting ring plate 4 → the pole piece block 5, because the ring-shaped magnetic pole 8 surrounds the diamond-shaped magnetic pole 2, and the magnetic poles at the two ends of the ring-shaped magnetic pole 8 have the same polarity, the side surface of the stator 19 far away from the generator shell 18 covers the side surface of the pole piece block 5 far away from the magnetic pole ring 3, therefore, the magnetic induction lines of the ring-shaped magnetic pole 8 and the diamond-shaped magnetic pole 2 can pass through the stator 19, thereby greatly reducing the leaked magnetic flux and improving the generating efficiency of the generator.

As shown in fig. 7, the comparative example is a conventional claw-pole generator, the magnetic circuit is N pole → air gap between rotor and stator 19 → air gap between stator 19 and rotor → S pole → magnetic yoke → N pole, and a part of the magnetic induction lines of the conventional claw-pole generator will not pass through the stator 19 from N pole to S pole, and the magnetic flux leaking between the N pole and S pole of the rotor will be large. The output efficiency of the generator is reduced.

The generator efficiency test is performed on the brushless generator with the diamond rotor and the brushless generator with the claw-pole rotor, as shown in table one, the generator efficiency test is performed on the brushless generator with the diamond rotor of this example, the time, the rotation speed (the unit of the rotation speed is r/min) of the rotating shaft 1 of the generator and the current value (the unit of the current value is a) introduced to the excitation coil 6 during the test are respectively recorded, then the output voltage value (the unit of the current value is V) and the output current value (the unit of the current value is a) of the generator and the temperature of the generator are recorded, and the efficiency η of the generator is calculated according to the output voltage value and the output current value of the generator.

Watch 1

As shown in table two, the power generation efficiency of the brushless generator with the claw-pole rotor is tested, the time and the rotation speed of the rotating shaft of the generator (the unit of the rotation speed is r/min) are recorded, the output voltage value (the unit is V), the output current value (the unit is a) and the temperature of the generator are recorded, and the efficiency η of the generator is calculated according to the output voltage value and the output current value of the generator.

Watch two

As can be seen from the comparison between the first table and the second table, compared with the conventional brushless generator with claw-pole rotor, the brushless generator with diamond rotor of the present embodiment has a significantly higher output current value than the brushless generator with claw-pole rotor at the same rotation speed, and the generation efficiency is also significantly higher than the brushless generator with claw-pole rotor, and the brushless generator with diamond rotor of the present embodiment has a lower temperature than the brushless generator with claw-pole rotor.

Therefore the utility model discloses a ring magnetic pole 8 surrounds diamond magnetic pole 2, and the magnetic pole polarity at ring magnetic pole 8 both ends is the same, and stator 19 keeps away from the side that generator housing 18's side covers utmost point palm piece 5 and keeps away from magnetic pole ring 3, thereby makes the quantity of the magnetism line of feeling who passes stator 19 great, thereby reduces the magnetic flux that leaks, has improved the generating efficiency of generator, and the utility model discloses a diamond rotor subassembly has adopted two excitation coil 6, and it has reduced single coil excitation load, reduces single excitation coil 6 internal resistance, has reduced excitation coil 6's calorific capacity, thereby slows down the insulating ageing speed of excitation coil 6, avoids excitation coil 6 to be burnt out because of the high temperature, thereby increases excitation coil 6's life, and then improves the life of generator.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined by the scope of the claims.

Claims (10)

1. A rhombus rotor subassembly, includes pivot (1), its characterized in that: further comprising:

the diamond-shaped magnetic pole (2), the diamond-shaped magnetic pole (2) comprises a magnetic pole ring (3), a connecting ring plate (4) and a plurality of pole palm blocks (5), the magnetic pole ring (3) is in a circular tube shape, the magnetic pole ring (3) is sleeved on the rotating shaft (1) and is fixedly connected with the rotating shaft (1), the connecting ring plate (4) is sleeved on the magnetic pole ring (3) and is fixedly connected with the magnetic pole ring (3), the plurality of pole palm blocks (5) are distributed along the circumferential direction of the connecting ring plate (4), and the pole palm blocks (5) are fixedly connected with the connecting ring plate (4);

ring magnetic pole (8), ring magnetic pole (8) are the tubular structure, the central axis of ring magnetic pole (8) is parallel with the central axis of magnetic pole ring (3) or coincide, magnetic pole ring (3), connection ring board (4) and utmost point palm piece (5) all are located inside ring magnetic pole (8), a plurality of utmost point palm holes (9) have been seted up on the lateral wall of ring magnetic pole (8), and are a plurality of utmost point palm hole (9) are arranged and are corresponded one by one with utmost point palm piece (5) along ring magnetic pole (8) circumference, utmost point palm piece (5) are pegged graft and are advanced in utmost point palm hole (9), utmost point palm piece (5) and ring magnetic pole (8) fixed connection.

2. The diamond rotor assembly according to claim 1, wherein: the diameter of the middle of the annular magnetic pole (8) is the largest, and the diameter of the annular magnetic pole (8) is gradually reduced from the middle to two axial ends.

3. The diamond rotor assembly according to claim 1, wherein: the annular magnetic pole (8) comprises a first annular claw pole (10) and a second annular claw pole (11), wherein the first annular claw pole (10) and the second annular claw pole (11) are of a conical tubular structure, the first annular claw pole (10) and the second annular claw pole (11) are arranged along the axis direction of the magnetic pole ring (3), the first annular claw pole (10) and the second annular claw pole (11) are coaxially arranged, one end, close to the second annular claw pole (11), of the first annular claw pole (10) is provided with a plurality of first pole palm notches (12), the first pole palm notches (12) are arranged along the circumferential direction of the first annular claw pole (10), one end, close to the first annular claw pole (10), of the second annular claw pole (11) is provided with a plurality of second pole palm notches (13), and the second pole palm notches (13) are arranged along the circumferential direction of the second annular claw pole (11), the first pole palm notch (12) and the second pole palm notch (13) are in one-to-one correspondence, the first annular claw pole (10) and the second annular claw pole (11) are fixedly connected to form an annular magnetic pole (8), and the first pole palm notch (12) and the second pole palm notch (13) form the pole palm hole (9).

4. The diamond rotor assembly according to claim 3, wherein: the first annular claw pole (10) and the second annular claw pole (11) are fixedly connected through welding materials (14) in a welding mode, and the welding materials (14), the first annular claw pole (10) and the second annular claw pole (11) are made of the same materials.

5. The diamond rotor assembly according to claim 1, wherein: the magnetic pole piece is characterized in that two ends of the pole piece block (5) in the length direction are fixedly connected with the annular magnetic pole (8) through connecting strips (15), one end of each connecting strip (15) is fixedly connected with the pole piece block (5), the other end of each connecting strip (15) is fixedly connected with the annular magnetic pole (8), and each connecting strip (15) is made of a non-magnetic-conductive material.

6. The diamond rotor assembly according to claim 1, wherein: the pole palm piece (5) and the annular magnetic pole (8) are fixedly connected through an annular connecting piece (21), the annular connecting piece (21) is arranged inside the annular magnetic pole (8) and is multiple, the pole palm piece (5) is fixedly connected with the annular connecting piece (21), the outer side face of the annular connecting piece (21) is in contact with the inner side face of the annular magnetic pole (8), the annular connecting piece (21) is fixedly connected with the annular magnetic pole (8), and the annular connecting piece (21) is made of a non-magnetic material.

7. The diamond rotor assembly according to claim 1, wherein: the length direction of utmost point palm piece (5) is parallel with the axis of ring magnetic pole (8), two terminal surfaces of utmost point palm piece (5) length direction are provided with first inclined plane (16), first inclined plane (16) are close to the center setting of utmost point palm piece (5) gradually to the one end that utmost point palm piece (5) is close to magnetic pole ring (3) from the one end that utmost point palm piece (5) kept away from magnetic pole ring (3), two terminal surfaces of utmost point palm hole (9) length direction are provided with second inclined plane (17), second inclined plane (17) and first inclined plane (16) parallel arrangement.

8. A rhombus rotor brushless generator having rhombus rotor assemblies according to any of claims 1 to 7, characterized in that: further comprising:

the generator shell (18), the rhombic rotor assembly is installed in the generator shell (18), and the rotating shaft (1) penetrates through two side surfaces of the generator shell (18) and is in rotating connection with the generator shell (18);

two excitation coils (6), two the setting is arranged along the length direction of pivot (1) in excitation coil (6), two excitation coil (6) set up the both sides in connection crown plate (4), two excitation coil (6) all with generator housing (18) fixed connection, all are provided with the mounting hole on two excitation coil (6), the mounting hole sets up along magnetic pole ring (3) axial, insert in the mounting hole at the both ends of magnetic pole ring (3), be provided with first air gap (22) between excitation coil (6) and magnetic pole ring (3), be provided with second air gap (23) between excitation coil (6) the side that is close to connection crown plate (4) and the terminal surface of connection crown plate (4), excitation coil (6) are kept away from and are provided with third air gap (24) between the terminal surface of magnetic pole ring (3) and the medial surface of ring magnetic pole (8), an excitation winding (7) is wound on the excitation coil (6), and the excitation coil (6) and the excitation winding (7) are both positioned in the annular magnetic pole (8);

the stator (19) is arranged inside the generator shell (18), the side face, far away from the generator shell (18), of the stator (19) covers the side face, far away from the magnetic pole ring (3), of the pole piece block (5), the stator (19) is fixedly connected with the generator shell (18), and a gap (20) is formed between the stator (19) and the pole piece block (5).

9. The brushless diamond rotor generator of claim 8, wherein: the width of the gap (20) is 0.35-0.5 mm.

10. The brushless diamond rotor generator of claim 8, wherein: the end face of the stator (19) along the length direction of the rotating shaft (1) is flush with the end face of the pole palm block (5) along the length direction.

Images