Magnetizing coil with staggered iron cores

Abstract

The utility model discloses a magnetizing coil with staggered iron cores. The magnetizing coil comprises a cooling jacket, a first iron core lamination layer, a second iron core lamination layer, a third iron core lamination layer and a fourth iron core lamination layer, according to the magnetizing coil with the staggered iron cores, the height of the staggered iron cores and the height of the single stack can be differentially and correspondingly designed according to the structure of a specific workpiece to be magnetized, a rectangular staggered rotor can be magnetized, the problem of the staggered rotor in the production process is solved, meanwhile, the saturation of magnetizing is not lower than 97%, the magnetizing efficiency is effectively improved, and the like. Compared with the prior art, the magnetizing clamp with different dislocation angles and different pole numbers can be designed, various different requirements can be met, the current of a wire is as small as possible under the condition that the magnetizing requirement is met, and therefore the service life of the magnetizing clamp with the iron cores arranged in the staggered mode is prolonged, one-time magnetizing is achieved, the magnetizing efficiency is improved, and finally the magnetic performance requirement of a whole rotor is met.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliance manufacturing auxiliary equipment, in particular to a magnetizing coil with staggered iron cores. Background Art

[0002] In traditional motor rotor magnetizing equipment, the arrangement of motor rotor magnets is vertical, so the rotors of this type are also arranged vertically. However, the drive motors widely used in the field of electric vehicles in recent years adopt an angularly staggered arrangement of magnets. How to magnetize this rotor and reach or approach the saturation performance of magnets magnetized alone is the main problem at this stage. For this reason, a magnetizing coil with staggered iron core arrangement is designed to better meet the actual use needs. Utility Model Content

[0003] The utility model aims to provide a magnetizing coil with staggered iron cores to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnetizing coil with staggered cores, comprising a cooling jacket, a first core laminate, a second core laminate, a third core laminate and a fourth core laminate, wherein the first core laminate, the second core laminate, the third core laminate and the fourth core laminate are nested and installed from top to bottom in the cooling jacket, a magnetizing rotor is placed in the first core laminate, the second core laminate, the third core laminate and the fourth core laminate, winding coils are installed on the first core laminate, the second core laminate, the third core laminate and the fourth core laminate, the winding coils are connected in series through wires, the first core laminate and the second core laminate are staggered, the first core laminate and the fourth core laminate are installed at the same angle, and the second core laminate and the third core laminate are installed at the same angle.

[0005] Preferably, a circulating water channel is provided in the cooling jacket, and the circulating water channel in the cooling jacket is respectively interconnected with the water inlet and the water outlet, and the water inlet and the water outlet are fixed on the outside of the cooling jacket. Through the above structure, a basic guarantee can be provided for the cooling of the device, thereby ensuring the service life of the device.

[0006] Preferably, the magnetizing polarities of the first core lamination, the second core lamination, the third core lamination and the fourth core lamination are all octopoles, and the entire outer surface of the first core lamination, the second core lamination, the third core lamination and the fourth core lamination is filled with cured epoxy resin. Through the above structure, a basic guarantee can be provided for the magnetization of the magnetized rotor.

[0007] Preferably, the misalignment deflection angle between the first core lamination and the second core lamination is 3.75°, and the deflection angle between the fourth core lamination and the third core lamination is -3.75°. By limiting the angles of the first core lamination, the second core lamination, the third core lamination and the fourth core lamination, the magnetization effect can be effectively improved.

[0008] Preferably, the first core lamination, the second core lamination, the third core lamination and the fourth core lamination are assembled into an integrated structure by pins or bolts, and the stability of the connection between the first core lamination, the second core lamination, the third core lamination and the fourth core lamination can be ensured by the action of the pins or bolts.

[0009] Preferably, the number of turns of the winding coil is eight.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the magnetizing coil with staggered core arrangement can design the staggered core and the height of the single stack according to the structure of the specific workpiece to be magnetized, and can magnetize the rectangular staggered rotor, solving the problem of the staggered rotor in the production process. At the same time, the saturation of magnetization is not less than 97%, which effectively improves the magnetization efficiency. By analogy, magnetizing fixtures with different staggered angles and different pole numbers can be designed to meet various different needs. While meeting the magnetization requirements, the current of the wire is made as small as possible, thereby extending the service life of the magnetizing fixture with staggered core arrangement. At the same time, magnetization is performed once to improve the magnetization efficiency, and finally the magnetic performance requirements of the entire rotor are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the exploded three-dimensional structure of the overall composition of the coil of the utility model;

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the overall composition of the coil of the utility model;

[0013] Figure 3 This is a schematic diagram of the three-dimensional structure of the first core stack of the utility model;

[0014] Figure 4 It is a schematic diagram of the three-dimensional structure of the coil as a whole and the magnetized rotor of the utility model.

[0015] In the figure: 1, cooling jacket; 101, water inlet; 102, water outlet; 2, first core lamination; 3, second core lamination; 4, third core lamination; 5, fourth core lamination; 6, winding coil; 7, magnetized rotor. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-Figure 4 The utility model provides a technical solution: a magnetizing coil with staggered core arrangement, comprising a cooling jacket 1, a first core laminate 2, a second core laminate 3, a third core laminate 4 and a fourth core laminate 5, wherein the first core laminate 2, the second core laminate 3, the third core laminate 4 and the fourth core laminate 5 are nested and installed from top to bottom in the cooling jacket 1, a magnetizing rotor 7 is placed in the first core laminate 2, the second core laminate 3, the third core laminate 4 and the fourth core laminate 5, winding coils 6 are installed on the first core laminate 2, the second core laminate 3, the third core laminate 4 and the fourth core laminate 5, the winding coils 6 are connected in series through wires, the first core laminate 2 and the second core laminate 3 are staggered, the first core laminate 2 and the fourth core laminate 5 are installed at the same angle, and the second core laminate 3 and the third core laminate 4 are installed at the same angle.

[0018] A circulating water channel is arranged in the cooling jacket 1, and the circulating water channel in the cooling jacket 1 is respectively connected to the water inlet 101 and the water outlet 102, and the water inlet 101 and the water outlet 102 are both fixed on the outside of the cooling jacket 1; the magnetizing polarities of the first core lamination 2, the second core lamination 3, the third core lamination 4 and the fourth core lamination 5 are all octopoles, and the entire outer surface of the first core lamination 2, the second core lamination 3, the third core lamination 4 and the fourth core lamination 5 is filled with cured epoxy resin; the misalignment deflection angle between the first core lamination 2 and the second core lamination 3 is 3.75°, and the deflection angle between the fourth core lamination 5 and the third core lamination 4 is -3.75°; the first core lamination 2, the second core lamination 3, the third core lamination 4 and the fourth core lamination 5 are assembled into an integrated structure by pins or bolts; the number of turns of the winding coil 6 is eight turns;

[0019] When magnetizing the magnetizing coils with staggered arrangement of the core, Figure 1-Figure 3As shown, first, the entire coil is assembled, and the device is connected to the DC pulse magnetizing power supply with a wire, and then the cooling water pipe is connected to the water inlet 101 and the water outlet 102, and the cooling water can be circulated in the cooling jacket 1 with the help of a pump, thereby providing a basic guarantee for the heat dissipation of the device. When the magnetizing rotor 7 is magnetized, the magnetizing rotor 7 is nested and installed in the entire coil, and the angle and height of the iron core on the magnetizing rotor 7 are determined to match the first iron core laminate 2, the second iron core laminate 3, the third iron core laminate 4 and the fourth iron core laminate 5, and the magnetizing power supply can be used for discharge and magnetization. This is the working principle of the magnetizing coil with staggered iron cores.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetizing coil with staggered cores, comprising a cooling jacket (1), a first core lamination (2), a second core lamination (3), a third core lamination (4) and a fourth core lamination (5), characterized in that: A first core laminate (2), a second core laminate (3), a third core laminate (4) and a fourth core laminate (5) are nested and installed in the cooling jacket (1) from top to bottom; a magnetized rotor (7) is placed in the first core laminate (2), the second core laminate (3), the third core laminate (4) and the fourth core laminate (5); winding coils (6) are installed on the first core laminate (2), the second core laminate (3), the third core laminate (4) and the fourth core laminate (5); the winding coils (6) are connected in series via conducting wires; the first core laminate (2) and the second core laminate (3) are installed in an offset manner; the first core laminate (2) and the fourth core laminate (5) are installed at the same angle; and the second core laminate (3) and the third core laminate (4) are installed at the same angle.

2. The magnetizing coil with staggered core arrangement according to claim 1, characterized in that: A circulating water channel is provided in the cooling jacket (1), and the circulating water channel in the cooling jacket (1) is respectively connected to a water inlet (101) and a water outlet (102), and the water inlet (101) and the water outlet (102) are both fixed on the outside of the cooling jacket (1).

3. The magnetizing coil with staggered core arrangement according to claim 2, characterized in that: The magnetizing polarities of the first core laminate (2), the second core laminate (3), the third core laminate (4) and the fourth core laminate (5) are all octupole, and the entire outer surfaces of the first core laminate (2), the second core laminate (3), the third core laminate (4) and the fourth core laminate (5) are filled with cured epoxy resin.

4. The magnetizing coil with staggered core arrangement according to claim 1, characterized in that: The offset deflection angle between the first core lamination (2) and the second core lamination (3) is 3.75°, and the deflection angle between the fourth core lamination (5) and the third core lamination (4) is -3.75°.

5. The magnetizing coil with staggered core arrangement according to claim 1, characterized in that: The first iron core laminate (2), the second iron core laminate (3), the third iron core laminate (4) and the fourth iron core laminate (5) are assembled into an integrated structure via pins or bolts.

6. The magnetizing coil with staggered core arrangement according to claim 1, characterized in that: The number of turns of the winding coil (6) is eight.

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