KR-102960692-B1 - manufacturing method of brushless motor for air compressor of hydrogen car

Abstract

The present invention relates to a stator press-fit structure for a brushless motor for a hydrogen vehicle air compressor, and restrains the stator of a brushless motor for a hydrogen vehicle air compressor. The present invention has the significant effect of facilitating and convenient motor assembly automation, and ensuring product-specific consistency by restraining the motor so that it does not move 360 degrees.

Inventors

• 정진근
• 김태연

Assignees

• 효성전기주식회사

Dates

Publication Date

20260507

Application Date

20221026

Claims (3)

1. In a method for manufacturing a brushless motor for a hydrogen vehicle air compressor, regarding the insulation of the brushless motor, inter-phase insulation is a method of preventing the passage of electricity or heat through an additional structure because heat conduction occurs between different phases that are adjacent to each other, and the additional structure is an insulating paper, wherein the insulating paper is a wedge insulating paper. The above wedge insulation is used for spacing between slots and coils, and the structure of the wedge insulation is a plate shape with a hole formed in the center, wherein the upper edge is a rounded shape convex upward and the lower edge is a horizontal plate, and the lower edge is a rounded shape convex downward and the upper edge is a horizontal plate, and the left and right edges are vertical plate shapes, forming a closed curve that is symmetrical in all directions. It is cut to completely insulate the slots and coils, and since the upper and lower edges of the central hole also form curves, the left and right edges, which are the upper and lower sections of the wedge insulation, are inserted between the copper wires, and due to the structure of the wedge insulation, inter-phase insulation is achieved along with wedge insulation. A method for manufacturing a brushless motor for a hydrogen vehicle air compressor, characterized by the use of a potting jig during the potting process for the motor housing, which involves a sequence of first filling with gelatin or epoxy material and second filling with silicone material to ensure resistance to shock and vibration and prevention of moisture and corrosion; wherein, after filling with gelatin or epoxy material, the motor is placed in a vacuum chamber and left for a certain period to remove internal air bubbles, and vibration is applied by a vibrator to ensure rapid and reliable removal of the bubbles, after which the motor is removed and silicone is injected.
2. delete
3. delete

Description

Manufacturing method of brushless motor for air compressor of hydrogen car The present invention relates to a method for manufacturing a brushless motor for a hydrogen vehicle air compressor, and more specifically, to a method for manufacturing a brushless motor for a hydrogen vehicle air compressor in which the automation of motor assembly is easy and convenient, and product-specific consistency is easy due to the restraint so that it does not move 360 degrees. Generally, regarding the constraint conditions during stator row insertion and forced press fitting, the correct positioning of the stator and the correct positioning of the Hall sensors are important because, due to the BLDC motor structure, the stator assembly, rotor magnet, and Hall sensor must be positioned in the correct three-phase hall positions according to the number of poles and slots to enable convenient inverter control. As shown in FIG. 1, the conventional stator press-fit structure prevents 360° directional misalignment during operation by creating a Keyhom on the outer side of the stator core using a position pin constraint (existing directional constraint method) to create a Keyhom, thereby enabling guide-type press-fitting (forced or hot), and separately assembling the Keyhom portion Key after forced press-fitting. Furthermore, as an example of conventional patent technology, Publication No. 10-2010-0011738 describes an assembly structure of a stator core (22) fixedly installed inside a transmission housing (11) in a drive motor for a hybrid vehicle, wherein A stator assembly structure for a drive motor of a hybrid vehicle is disclosed, characterized in that the stator core (22) is pressed into the inner side of a support ring (26) and assembled so that the support ring (26) surrounds the stator core (22), and the outer surface of the support ring (26) and the inner surface of the transmission housing (11) outside thereof form a cooling passage (29) through which a refrigerant passes. Additionally, Patent No. 10-0233032 discloses a stator core press-fitting and caulking device for a vacuum cleaner motor. However, for assembly, a loss occurs where an outer Keyhom is required to be created on the stator, and an additional structure is created (Key). Figure 1 is an internal photograph of the brushless motor for a hydrogen vehicle air compressor according to the present invention. Figure 2 is a detailed photograph of Figure 1. Figure 3 is a photograph of the brushless motor housing for a hydrogen vehicle air compressor according to the present invention. FIG. 4 is a photograph of the Brushless Motor housing for a hydrogen vehicle air compressor of the present invention in a horizontal position. FIG. 5 is a photograph of a jig for press-fitting the motor stator of a brushless motor for a hydrogen vehicle air compressor according to the present invention. Figure 6 is a planar photograph of Figure 5. Figure 7 is a photograph of the potting process of the Brushless Motor for a hydrogen vehicle air compressor according to the present invention. FIG. 8 shows the stator press-fit structure of a conventional brushless motor for a hydrogen vehicle air compressor. FIG. 9 is a stator press-fit structure of a brushless motor for a hydrogen vehicle air compressor according to the present invention, which utilizes an inner slot of the stator to restrain movement in 360 degrees. FIG. 10 is a coil-by-terminal fuse configuration diagram of a conventional brushless motor for an air compressor. FIG. 11 is a diagram showing the configuration of a direct fusing method between a coil and a cable of a brushless motor for a hydrogen vehicle air compressor according to the present invention. FIG. 12 is a process diagram of the housing salt core of a brushless motor for a hydrogen vehicle air compressor according to the present invention. FIG. 13 shows a conventional insulation method for a brushless motor for a high-voltage hydrogen vehicle air compressor. FIG. 14 shows the insulation structure of a brushless motor for a high-voltage hydrogen vehicle air compressor according to the present invention. FIG. 15 is an insulation structure of a brushless motor for a high-voltage hydrogen vehicle air compressor according to another embodiment of the present invention. The present invention relates to a stator press-fit structure for a brushless motor for a hydrogen vehicle air compressor, characterized by restraining the stator of the brushless motor for a hydrogen vehicle air compressor so that it does not move 360 degrees. In addition, the above-mentioned restraint structure is characterized by restraining using an inner slot. In addition, the above-mentioned restraint structure is characterized by utilizing an inner slot to restrain movement in 360 degrees. The present invention will be described in detail with reference to the attached drawings as follows. FIG. 1 is an internal photograph of the Brushless Motor for a Hydrogen Vehicle Air Compressor according to t