Stator structure of permanent magnet brushless motor

Abstract

The utility model discloses a stator structure of a permanent magnet brushless motor. The stator structure comprises a stator iron core and in-slot insulators arranged in the stator iron core. When the stator structure of the permanent magnet brushless motor is used, the connecting line is connected with a power supply, and the motor controller receives an instruction from a user or other systems and controls the switching time of the electronic switch so as to electrify the stator winding according to a specific sequence and time, so that a stable rotating magnetic field can be ensured to be generated; when the stator winding is electrified, the stator winding can generate a magnetic field in the permanent magnet inside or outside the stator, the magnetic field interacts with the magnetic material on the rotor to generate an electromagnetic torque, the electromagnetic torque pushes the rotor to rotate, and the generated magnetic field rotates along with the stator winding due to the periodic change of the current direction of the stator winding, so that the continuous rotation of the rotor is maintained. Through the arrangement of the permanent magnet brushless motor stator structure, the energy efficiency conversion rate and the power output are improved, and the energy consumption and the maintenance cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field related to new energy vehicles, and particularly relates to a stator structure of a permanent magnet brushless motor. Background Technique

[0002] The stator structure of a permanent magnet brushless motor refers to the stationary part in the motor. In this motor design, the permanent magnets are not placed on the rotor, but are located inside or outside the stator, and together with the stator winding form the part that generates the rotating magnetic field. The stator winding is usually wound by multi-phase current conductors and insulated by insulating materials to generate a magnetic field when energized. The shape and structure of the stator core are designed according to different application requirements to provide sufficient magnetic circuits and mechanical support. The existing stator structure of a permanent magnet brushless motor is mainly composed of components such as a stator core, a lead-side skeleton, a reverse-lead-side skeleton, in-slot insulation, a stator winding, phase insulation, gaskets, terminals, a sheath, a terminal shell, and connecting wires. The existing stator structure of a permanent magnet brushless motor has low energy conversion efficiency and power output during use, and high energy consumption and maintenance costs, so a stator structure of a permanent magnet brushless motor is essential. Content of the Utility Model

[0003] The purpose of the utility model is to provide a stator structure of a permanent magnet brushless motor to solve the problems of low energy conversion efficiency and power output, and high energy consumption and maintenance costs in the existing stator structure of a permanent magnet brushless motor during use as mentioned in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A stator structure of a permanent magnet brushless motor, comprising

[0005] a stator core and in-slot insulation arranged at the inner position of the stator core;

[0006] a stator winding is installed at the inner side position of the stator core, and phase insulation is arranged at the inner side position of the stator winding;

[0007] a reverse-lead-side skeleton is installed at the lower end position of the stator core;

[0008] a lead-side skeleton is arranged at the upper end position of the stator core, and a sheath is installed at the outer side position of the lead-side skeleton at the upper end of the stator core;

[0009] a terminal shell is installed at the upper end position of the sheath, terminals are arranged at the inner position of the terminal shell, and a gasket is installed at the lower end position of the terminal shell;

[0010] the terminal shell is connected to the stator winding through a connecting wire;

[0011] Through the setting of the permanent magnet brushless motor stator structure, the energy efficiency conversion rate and power output are improved, and the energy consumption and maintenance cost are reduced.

[0012] Preferably, a restricting frame is arranged at the inner side position of the upper end of the sheath, and the restricting frame is an inverted L-shaped structure.

[0013] Preferably, the restricting frame and the protective sleeve are connected by bonding, and both the restricting frame and the protective sleeve are made of plastic materials.

[0014] Preferably, the restricting frame blocks the connecting wire to make the connecting wire in a taut state. Through the setting of the restricting frame, the connecting wire can be restricted.

[0015] Preferably, the stator core is stacked by silicon steel sheets of the same thickness. The surface of the silicon steel sheet is coated with an insulating coating, and the silicon steel sheets are connected through self-locking points.

[0016] Preferably, the stator core, as the main component of the motor magnetic circuit, provides a closed path for the constant magnetic field generated by the permanent magnet rotor. A multi-phase winding is nested inside the stator core, and these windings generate a rotating magnetic field after being energized, interacting with the permanent magnets on the rotor to generate torque.

[0017] Preferably, the stator core bears the mechanical force and vibration generated during the operation of the motor, and its rigidity and vibration resistance ensure the stable operation of the motor. Through the thin sheet structure of the silicon steel sheet and the setting of the insulating coating on the surface, eddy current and hysteresis losses can be effectively suppressed, and the mechanical strength and stability can be improved.

[0018] Preferably, a square buckle and a round buckle are connected to the outer side position of the terminal shell, and a square clamping post and a round clamping post are installed at the upper end of the sheath and inside the positions of the square buckle and the round buckle.

[0019] Preferably, two square buckles and two square clamping posts are provided, and one round buckle and one round clamping post are provided. The square buckle and the square clamping post, and the round buckle and the round clamping post are connected by plugging.

[0020] Compared with the prior art, the present utility model provides a permanent magnet brushless motor stator structure, which has the following beneficial effects:

[0021] The present utility model improves the stator structure of a permanent magnet brushless motor. When using the stator structure of the permanent magnet brushless motor, first connect the connecting wire to the power supply. The motor controller receives instructions from the user or other systems and controls the switching time of the electronic switch to energize the stator winding in a specific sequence and timing, so as to ensure the generation of a stable rotating magnetic field. When the stator winding is energized, it will generate a magnetic field in the permanent magnet inside or outside the stator. This magnetic field interacts with the magnetic material on the rotor to generate an electromagnetic torque, and the electromagnetic torque drives the rotor to rotate. Since the current direction of the stator winding changes periodically, the generated magnetic field also rotates accordingly, thus maintaining the continuous rotation of the rotor. Through the setting of the stator structure of the permanent magnet brushless motor, the energy efficiency conversion rate and power output are improved, and the energy consumption and maintenance cost are reduced, so that the equipment can be better used. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of an exploded view of the stator structure of the permanent magnet brushless motor of the present utility model.

[0023] Figure 2 It is a schematic structural diagram of the overall stator structure of the permanent magnet brushless motor of the present utility model.

[0024] Figure 3 It is a schematic structural diagram of the bottom of the stator structure of the permanent magnet brushless motor of the present utility model.

[0025] Figure 4 It is a schematic structural diagram of a side view of the stator structure of the permanent magnet brushless motor of the present utility model.

[0026] Figure 5 It is a schematic structural diagram of a side view of the stator structure of the permanent magnet brushless motor of the present utility model.

[0027] Figure 6 It is a schematic structural diagram of a top view of the stator structure of the permanent magnet brushless motor of the present utility model.

[0028] Figure 7 It is a schematic structural diagram of a bottom view of the stator structure of the permanent magnet brushless motor of the present utility model.

[0029] Figure 8 It is a schematic structural diagram of a front view of the stator structure of the permanent magnet brushless motor of the present utility model.

[0030] In the figure: 1. Stator core; 2. Lead side skeleton; 3. Reverse lead side skeleton; 4. Insulation in the slot; 5. Stator winding; 6. Phase insulation; 7. Gasket; 8. Terminal; 9. Sheath; 10. Terminal housing; 11. Connecting wire; 12. Restricting frame; 13. Square buckle; 14. Square clamping post; 15. Round buckle; 16. Round clamping post. Detailed Implementation Manner

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] The present utility model provides a permanent magnet brushless motor stator structure as Figure 1-8 shown. A permanent magnet brushless motor stator structure includes a stator core 1 and an in-slot insulation 4 disposed inside the stator core 1; a stator winding 5 is installed at the inner side of the stator core 1, and an interphase insulation 6 is disposed at the inner side of the stator winding 5; a reverse lead side skeleton 3 is installed at the lower end of the stator core 1; a lead side skeleton 2 is disposed at the upper end of the stator core 1, and a sheath 9 is installed at the upper end of the stator core 1 and outside the lead side skeleton 2; a terminal shell 10 is installed at the upper end of the sheath 9, a terminal 8 is disposed inside the terminal shell 10, and a gasket 7 is installed at the lower end of the terminal shell 10; the terminal shell 10 is connected to the stator winding 5 through a connecting wire 11; through the setting of the permanent magnet brushless motor stator structure, the energy efficiency conversion rate and power output are improved, and the energy consumption and maintenance cost are reduced.

[0033] As Figure 1 、 Figure 2 、 Figure 8 shown, in order to improve the energy efficiency conversion rate and power output, when using the permanent magnet brushless motor stator structure, first connect the connecting wire 11 to the power supply. The motor controller receives instructions from the user or other systems and controls the switching time of the electronic switch to energize the stator winding 5 in a specific order and timing, so as to ensure the generation of a stable rotating magnetic field. When the stator winding 5 is energized, they will generate a magnetic field in the permanent magnets inside or outside the stator. This magnetic field interacts with the magnetic material on the rotor to generate an electromagnetic torque, and the electromagnetic torque drives the rotor to rotate. Since the current direction of the stator winding 5 changes periodically, the generated magnetic field also rotates accordingly, thus maintaining the continuous rotation of the rotor. Through the setting of the permanent magnet brushless motor stator structure, the energy efficiency conversion rate and power output are improved, and the energy consumption and maintenance cost are reduced, so that the equipment can be better used.

[0034] A restricting frame 12 is disposed at the inner upper end of the sheath 9. The restricting frame 12 is an inverted L-shaped structure. The restricting frame 12 is connected to the protective sheath 9 by gluing. Both the restricting frame 12 and the protective sheath 9 are made of plastic materials. The restricting frame 12 blocks the connecting wire 11 to keep the connecting wire 11 in a taut state. Through the setting of the restricting frame 12, the connecting wire 11 can be restricted.

[0035] As shown in Figure 1 , Figure 2 , Figure 4 and Figure 6 shown, in order to restrict the connecting wire 11, when using the permanent magnet brushless motor stator structure, first bond the restricting frame 12 to the upper end of the protective sleeve 9, then connect the terminal housing 10 and the stator winding 5 through the connecting wire 11, and then snap the connecting wire 11 into the inner side of the restricting frame 12. When the connecting wire 11 contacts the restricting frame 12, it will be in a taut state. Through the setting of the restricting frame 12, the connecting wire 11 can be restricted.

[0036] The stator core 1 is laminated with silicon steel sheets of the same thickness. The surface of the silicon steel sheets is coated with an insulating coating. The silicon steel sheets are connected through self-locking points. The stator core 1, as the main component of the motor magnetic circuit, provides a closed path for the constant magnetic field generated by the permanent magnet rotor. Multiple-phase windings are nested inside the stator core 1. These windings generate a rotating magnetic field after being energized and interact with the permanent magnets on the rotor to generate torque. The stator core 1 bears the mechanical force and vibration generated during the operation of the motor, and its rigidity and vibration resistance ensure the stable operation of the motor. Through the thin sheet structure of the silicon steel sheets and the setting of the insulating coating on the surface, eddy current and hysteresis losses can be effectively suppressed, and the mechanical strength and stability can be improved.

[0037] As shown in Figure 1 , Figure 2 , Figure 7 and Figure 8 shown, in order to effectively suppress eddy current and hysteresis losses and improve mechanical strength and stability, when using the permanent magnet brushless motor stator structure, first assemble the stator core 1 through self-locking of the silicon steel sheets, then evenly apply an insulating coating on the surface of the silicon steel sheets, and then install the slot insulation 4, the stator winding 5, and the phase insulation 6 on the inner side of the stator core 1. Then install the lead-side skeleton 2 and the sheath 9 on the upper end of the stator core 1, and install the reverse lead-side skeleton on the lower end of the stator core 1. Through the thin sheet structure of the silicon steel sheets and the setting of the insulating coating on the surface, eddy current and hysteresis losses can be effectively suppressed, and the mechanical strength and stability can be improved.

[0038] Square buckles 13 and round buckles 15 are connected to the outer side of the terminal housing 10. Square columns 14 and round columns 16 are installed at the upper end of the sheath 9 and inside the square buckles 13 and round buckles 15. There are two square buckles 13 and two square columns 14, and one round buckle 15 and one round column 16. The square buckles 13 and the square columns 14, and the round buckles 15 and the round columns 16 are connected by means of insertion.

[0039] As shown in Figure 1 , Figure 2 , Figure 4and Figure 6 As shown, in order to facilitate the connection between the terminal housing 10 and the sheath 9, when using the permanent magnet brushless motor stator structure, when it is necessary to install the terminal housing 10 at the upper end of the sheath 9, first, the square buckle 13 on the outside of the terminal housing 10 is stuck on the outside of the square column 14. At the same time, the circular buckle 15 on the outside of the terminal housing 10 is on the outside of the circular column 16, so that the terminal housing 10 is installed at the upper end of the sheath 9. Through the settings of the square buckle 13, the square column 14, the circular buckle 15 and the circular column 16, the connection between the terminal housing 10 and the sheath 9 is facilitated, and the connection between the terminal housing 10 and the sheath 9 becomes more convenient.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A permanent magnet brushless motor stator structure, characterized in that: include A stator core (1) and slot insulation (4) arranged at an internal position of the stator core (1); A stator winding (5) is installed at an inner position of the stator core (1), and an interphase insulation (6) is provided at an inner position of the stator winding (5); A counter-lead side frame (3) is installed at the lower end of the stator core (1); A lead wire side frame (2) is provided at the upper end of the stator core (1), and a sheath (9) is installed at the upper end of the stator core (1) and at an outer position of the lead wire side frame (2); A terminal shell (10) is installed at the upper end of the sheath (9), a terminal (8) is arranged at an inner position of the terminal shell (10), and a sealing gasket (7) is installed at the lower end of the terminal shell (10); The terminal housing (10) is connected to the stator winding (5) via a connecting wire (11); By setting the permanent magnet brushless motor stator structure, the energy efficiency conversion rate and power output are improved, and the energy consumption and maintenance cost are reduced.

2. A permanent magnet brushless motor stator structure according to claim 1, characterized in that: A limiting frame (12) is provided at the inner side of the upper end of the protective sleeve (9), and the limiting frame (12) is an inverted L-shaped structure.

3. A permanent magnet brushless motor stator structure according to claim 2, characterized in that: The limiting frame (12) and the protective sleeve (9) are connected by means of adhesive bonding, and the limiting frame (12) and the protective sleeve (9) are both made of plastic material.

4. A permanent magnet brushless motor stator structure according to claim 3, characterized in that: The limiting frame (12) blocks the connecting wire (11) so that the connecting wire (11) is in a taut state. The setting of the limiting frame (12) can play a limiting role on the connecting wire (11).

5. The permanent magnet brushless motor stator structure according to claim 1, characterized in that: The stator core (1) is stacked by silicon steel sheets of the same thickness, the surfaces of the silicon steel sheets are coated with an insulating coating, and the silicon steel sheets are connected via self-fastening points.

6. A permanent magnet brushless motor stator structure according to claim 5, characterized in that: The stator core (1) is a main component of the motor magnetic circuit, providing a closed path for the constant magnetic field generated by the permanent magnet rotor. The stator core (1) has multi-phase windings embedded inside. These windings generate a rotating magnetic field after being energized, interacting with the permanent magnets on the rotor to generate torque.

7. A permanent magnet brushless motor stator structure according to claim 6, characterized in that: The stator core (1) is responsible for transmitting the mechanical force and vibration generated when the motor is running. Its rigidity and vibration resistance ensure stable operation of the motor. The thin sheet structure of the silicon steel sheet and the insulating coating on the surface can effectively suppress eddy current and hysteresis losses, thereby improving mechanical strength and stability.

8. The permanent magnet brushless motor stator structure according to claim 1, characterized in that: A square buckle (13) and a round buckle (15) are connected to the outer side of the terminal shell (10), and a square clamping column (14) and a round clamping column (16) are installed at the upper end of the sheath (9) and at the inner side of the square buckle (13) and the round buckle (15).

9. A permanent magnet brushless motor stator structure according to claim 8, characterized in that: The square buckle (13) and the square clamping column (14) are each provided with two, and the round buckle (15) and the round clamping column (16) are each provided with one, and the square buckle (13) and the square clamping column (14), and the round buckle (15) and the round clamping column (16) are connected by plugging.

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