CN100388593C - A transverse flux motor and its manufacturing method - Google Patents

Abstract

A transverse flux motor, including a rotor and an external stator, the stator is composed of a number of stator cores and coils around the rotor, the structure of the stator core is: U-shaped silicon steel plates with different fillet radii along the radial direction Set in order from small to large. The manufacturing method of the present invention: 1. Make the stator core: a. Wrap the silicon steel plate along the mold for the required number of turns; b. Anneal the wound silicon steel plate; c. Dip the silicon steel plate in insulating varnish; d. After pulling out the mold, cut it at any position in the middle to get two stator cores; 2. Arrange the stator cores evenly around the rotor according to the required arrangement order, and divide them into the same three parts, and the center lines of the three parts differ by 120°; 3. Wind the coil on the outer stator core; 4. Install the rotor on the motor shaft; 5. Connect the three phases divided into the motor stator to the external circuit respectively. The advantage is that the processing technology is simple, the raw materials are saved, the eddy current loss is reduced, and the efficiency of the motor is improved.

Description

A transverse flux motor and its manufacturing method

technical field

The invention relates to the technical field of motors, in particular to a transverse flux motor and a manufacturing method thereof.

Background technique

Transverse flux motors can obtain higher power or torque density, and are suitable for low-speed high-torque direct drive. However, the existing transverse flux motor has a complex structure and process. The materials used to make the stator core mainly include SMC soft magnetic composite materials, electrical pure iron, and silicon steel plates. The first two materials are mainly used to make the entire U-shaped core, while The U-shaped iron core is made of silicon steel plate material, and the U-shaped stator silicon steel plate with the same fillet radius formed by punching and shearing the rectangular silicon steel plate is stacked, which wastes raw materials and is not convenient for processing.

Contents of the invention

In order to solve the above existing problems, the object of the present invention is to provide a transverse flux motor and its manufacturing method, which makes the motor meet the needs of industrial production by changing the structure and processing technology of the stator core.

The transverse flux motor of the present invention includes a rotor 7 and an external stator thereof. The stator is composed of a number of stator cores and coils distributed around the rotor 7, and permanent magnets are uniformly arranged on the circumference of the rotor core 10 in the end cover 8. 9. The stator cores 3 and 4 are evenly arranged around the permanent magnet 9 of the rotor, and are divided into the same three parts to form three phases of the motor. The center lines of the three phases differ by 120°, and the stator cores 3 and 4 on each phase are separated by size Arranged, the coils 5 or 6 are arranged on the outer stator core 3 and connected with the external circuit. The stator is composed of a number of stator cores and coils distributed around the rotor. The stator core is made of U-shaped silicon steel plates with different fillet radii along the radial direction from small to large. The number of settings is related to the power of the motor, It is related to the speed, thickness and width of the steel plate, so that the overall thickness can meet the requirements.

The manufacturing method of transverse flux motor of the present invention: 1, make stator iron core: a, silicon steel plate is wound along the required number of circles of mould; The temperature is 650 ℃ ~ 700 ℃, in order to eliminate the work hardening of the silicon steel plate, reduce the hardness, eliminate the stress, and improve the plasticity; c. Dip the silicon steel plate with insulating paint; The 6 position is cut to get two stator cores. 2. Arrange the stator cores evenly around the rotor according to the required arrangement order, and divide them into the same three parts. The center lines of the three parts differ by 120° to form the three phases of the motor; the arrangement order is related to the power of the motor. 3. Wind the coil on the outer stator core; the coil can connect the outermost stator cores of each phase in series, or wind the outermost stator cores of each phase separately. 4. Install the rotor on the motor shaft. 5. Connect the three phases divided into the stator of the motor to the external circuit respectively.

The processing technology of the stator core of the transverse flux motor of the present invention is as follows: 1. Winding the silicon steel plate along the mould; In order to eliminate the work hardening of the silicon steel plate, reduce the hardness, eliminate the stress, and improve the plasticity; 3. Dip the silicon steel plate with insulating paint; 4. After pulling out the mold, cut it at the position of 1:9 to 1:6 in the middle to get two Stator core. The cross-sectional shape of the mold is a rounded rectangle, a circle, or an ellipse.

The invention has the advantages of simple processing technology, convenient operation, saving raw materials, reducing eddy current loss and improving the efficiency of the motor.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the motor stator core coils connected in series and wound in the present invention,

Fig. 2 is a schematic diagram of a U-shaped stator core of the present invention,

Fig. 3 is a winding processing sectional view of the U-shaped stator core of the present invention,

Fig. 4 is a structural schematic diagram of the serial winding of the stator core coils of the present invention,

Fig. 5 is a schematic view of the structure of stator core coils of the present invention wound separately,

Fig. 6 is a schematic diagram of the overall structure of the motor stator core coil wound separately;

In the figure, 1 silicon steel plate, 2 insulating paint, 3 outer stator core, 4 inner stator core, 5, 6 coil, 7 rotor, 8 end cover, 9 permanent magnet, 10 rotor core, 11 bearing, 12 rotating shaft.

Detailed ways

Further describe content of the present invention below in conjunction with accompanying drawing and embodiment:

Mechanical structure of the present invention as shown in Figure 1, comprises rotor 7 and the stator outside thereof, and its stator is made up of some stator iron cores and coils that are distributed around rotor 7, is uniformly arranged on the circumference of rotor iron core 10 in end cover 8 There are permanent magnets 9, and the stator cores 3 and 4 are evenly arranged around the permanent magnets 9 of the rotor, and are divided into the same three parts to form three phases of the motor. The center lines of the three phases differ by 120°, and the stator cores 3 and 4 on each phase The coils 5 or 6 are arranged on the outer stator core 3 and connected with the external circuit. The stator core is made of U-shaped silicon steel plates with different fillet radii arranged radially from small to large. Its overall thickness can meet the requirements.

Embodiment 1: Taking the motor power as 5KW as an example, its manufacturing method is:

(1) Wind the silicon steel plate 1 several times along the mold so that the thickness of the winding is 60mm, the inner diameter length of the U-shaped stator core is 100mm, the inner diameter width of the U-shaped stator core is 80mm, and the width of the silicon steel plate is 25mm ;

(2) Perform annealing treatment on the wound silicon steel plate 1: the annealing temperature is 650° C. to 700° C. to eliminate work hardening of the silicon steel plate, reduce hardness, eliminate stress, and improve plasticity;

(3), dipping the silicon steel plate 1 into insulating paint 2;

(4) After pulling out the mold, cut it at the middle 1:9 position to get two stator cores;

(5), the stator cores are evenly arranged around the rotor according to the arrangement sequence shown in Figure 4, and are divided into three identical parts. The centerlines of the three parts differ by 120° to form three phases of the motor; the arrangement sequence is related to the power of the motor;

(6), the coil 5 is wound on the outer layer stator core, and the three parts of the stator core are connected in series;

(7), rotor 7 is installed on the motor rotating shaft 12;

(8) The three phases divided into the stator of the motor are respectively connected to the external circuit.

Embodiment 2: Taking the motor power as 2.5KW as an example, its manufacturing method is:

(1) Wind the silicon steel plate 1 along the mold for several turns, so that the thickness of the winding is 40mm, the inner diameter length of the U-shaped stator core is 70mm, the inner diameter width of the U-shaped stator core is 40mm, and the width of the silicon steel plate is 20mm ;

(2) Perform annealing treatment on the wound silicon steel plate 1: the annealing temperature is 650° C. to 700° C. to eliminate work hardening of the silicon steel plate, reduce hardness, eliminate stress, and improve plasticity;

(3), dipping the silicon steel plate 1 into insulating paint 2;

(4) After pulling out the mold, cut it at the middle 1:6 position to get two stator cores;

(5), the stator cores are evenly arranged around the rotor according to the arrangement sequence shown in Figure 5, and are divided into three identical parts. The centerlines of the three parts differ by 120° to form three phases of the motor; the arrangement sequence is related to the power of the motor;

(6), winding the coil 6 on the outer stator core, and winding the stator cores of the three parts separately;

(7), rotor 7 is installed on the motor rotating shaft 12;

(8) The three phases divided into the stator of the motor are respectively connected to the external circuit.

Claims (3)

1. transverse flux motor, comprise rotor and outside stator thereof, its stator is made up of the some stator cores and the coil that are distributed in peritrochanteric, it is characterized in that stator core is to be formed by different radially ascending the setting gradually of U type silicon steel plate of radius of corner.

2. the manufacture method of the described transverse flux motor of claim 1 is characterized in that may further comprise the steps:

Make stator core: silicon steel plate is twined the required number of turns along mould; The silicon steel plate that winds is made annealing in process, and its annealing temperature is 650 ℃～700 ℃; Silicon steel plate is soaked insulating varnish; After the mould extraction, promptly get two stator cores position incision in 1: 9～1: 6;

With stator core by required put in order be evenly arranged in rotor around, and be divided into three identical parts, three part center lines differ 120 °, form the three-phase of motor;

Coil is wrapped in the outer stator core;

Rotor is installed on the machine shaft;

The three-phase that motor stator is divided into is connected with external circuit respectively.

3. the manufacture method of a kind of transverse flux motor according to claim 2, the cross sectional shape that it is characterized in that described mould is round rectangle, circle or ellipse.

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