A low-loss permanent magnet generator

Abstract

The utility model relates to the technical field of permanent magnet generator discloses a low loss's permanent magnet generator, including the casing, the rear end threaded connection of casing has the back cover, the inside fixedly connected with bearing support of back cover, the front end threaded connection of casing has the front cover, the surface center of front cover inserts and is equipped with the bearing, the inner wall between bearing, bearing support rotatably connects with permanent magnet rotor, the inside of casing is provided with stator subassembly, and the outer surface between casing and stator subassembly is provided with the heat dissipation component. In the utility model, through stator subassembly, heat dissipation component, be equipped with a plurality of mounting recesses on the coil support of stator frame, the heat exchange square tube with the heat exchange fin is built -in, and is connected through the shunt connector. Under the action of circulating pump, the cooling liquid in cooling liquid tank can circulate in the heat exchange square tube connected with the shunt connector, thereby the heat of the inside of casing is heat exchanged and is cooled down, reduces the heat loss of generator, prolongs its life.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet generator technology, and in particular to a low-loss permanent magnet generator. Background Technology

[0002] A permanent magnet generator is a type of motor that operates according to Faraday's law of electromagnetic induction. It generates a main magnetic field by replacing the traditional excitation coil with a permanent magnet, converting mechanical energy into electrical energy. It does not require an external excitation power supply. Its core advantage lies in high efficiency and energy saving, with losses reduced by more than 20% compared to traditional motors.

[0003] The basic structure of a permanent magnet generator consists of two parts: a stator and a rotor. The stator has three sets of clamp-shaped windings, while the rotor is formed by permanent magnets. When the rotor rotates at a certain speed, electromagnetic induction is generated in the stator windings, thereby producing output voltage and current. Compared with other generators, permanent magnet generators have advantages such as small size, light weight, high efficiency, and fast response speed.

[0004] While existing permanent magnet generators achieve energy-saving power supply effects such as small size, light weight, high efficiency, and fast response, their components have resistance. If the heat generated by the current passing through the conductor during operation is not handled in time, it will cause resistance loss, thereby affecting the service life and making them less convenient to use. Therefore, a low-loss permanent magnet generator is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a low-loss permanent magnet generator, which aims to solve the problem in the prior art where the components have resistance, and if the heat generated by the current passing through the conductor during operation is not dealt with in time, it will cause resistance loss, thereby affecting the service life.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a low-loss permanent magnet generator, comprising a housing, a rear cover threadedly connected to the rear end of the housing, a bearing bracket fixedly connected inside the rear cover, a front cover threadedly connected to the front end of the housing, a bearing embedded in the center of the surface of the front cover, a permanent magnet rotor rotatably connected between the bearing and the inner wall of the bearing bracket, a stator assembly disposed inside the housing, and a heat dissipation assembly disposed between the outer surface of the housing and the stator assembly;

[0007] The heat dissipation assembly includes a coolant tank, the outer wall of which is fixedly connected to the outer surface of the housing. An electronic cooling chip is fixedly connected to the surface of the coolant tank. A circulation pump is fixedly connected to the upper surface of the coolant tank. A supply pipe is fixedly connected to one end of the circulation pump. A heat exchange square tube is fixedly connected to the other end of the supply pipe. A branch pipe is connected through the outer surface of the heat exchange square tube. Heat exchange fins are fixedly connected to the lower surface of the heat exchange square tube. A return pipe is fixedly connected to the bottom end of the coolant tank.

[0008] As a further description of the above technical solution:

[0009] The stator assembly includes a stator frame, the outer surface of which is attached to the inner surface of the housing, a coil frame is fixedly connected to the inner wall of the stator frame, and an installation groove is provided on the outer wall of the stator frame near the coil frame.

[0010] As a further description of the above technical solution:

[0011] The coil frame and mounting groove are arranged in a ring at equal intervals, and the multiple coil frames and mounting grooves are arranged in a one-to-one correspondence. The outer wall of the stator frame is provided with a positioning slot between the multiple mounting grooves.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the mounting groove is adapted to the outer wall size of the heat exchange square tube, and the inner wall of the positioning slot is adapted to the outer wall size of the diversion pipe.

[0014] As a further description of the above technical solution:

[0015] The heat exchange square tubes are provided in a one-to-one correspondence with the mounting grooves, and the return pipe is connected to the heat exchange square tube located at the bottom.

[0016] As a further description of the above technical solution:

[0017] The upper surfaces of the rear cover and the front cover are fixedly connected to a lubrication interface. A lubrication channel is connected between the inner rolling element of the bearing and the inside of the lubrication interface. A sealing component is provided between the upper surface of the lubrication interface and the inside of the lubrication channel.

[0018] As a further description of the above technical solution:

[0019] The sealing assembly includes a sealing plug and a telescopic pin. The outer wall of the sealing plug is fitted to the lubrication interface and the interior of the lubrication channel. A cap is fixedly connected to the top of the sealing plug, and the end of the telescopic pin is fixedly engaged with the outer surface of the lubrication interface.

[0020] As a further description of the above technical solution:

[0021] The outer surface of the cover has a card hole, and the inner wall of the card hole is adapted to the outer wall size of the telescopic end of the telescopic pin.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, through the stator assembly and heat dissipation assembly, multiple mounting grooves are provided on the stator frame corresponding to the coil frame, and a heat exchange square tube with heat exchange fins is built in, which is connected by a distribution pipe. Under the action of the circulating pump, the coolant in the coolant tank can circulate in the heat exchange square tube connected by the distribution pipe, thereby exchanging heat and cooling the heat inside the shell, reducing the heat loss of the generator and extending its service life.

[0024] 2. In this utility model, through the lubrication interface, lubrication channel and sealing component, the lubrication channel connects the lubrication interface to the internal rolling element of the bearing and bearing bracket, which facilitates the flexible installation or removal of the sealing plug at the lubrication interface using the cover with the locking hole and the telescopic locking pin, so as to lubricate the bearing and bearing bracket, thereby reducing friction loss, effectively reducing the loss of the permanent magnet generator and improving efficiency. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a low-loss permanent magnet generator proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the overall disassembled structure of a low-loss permanent magnet generator proposed in this utility model.

[0027] Figure 3 This is a schematic diagram showing the disassembled structure of the stator assembly and heat dissipation assembly of a low-loss permanent magnet generator proposed in this utility model.

[0028] Figure 4 This is a schematic diagram showing the disassembled structure of the rear cover, front cover, and sealing assembly at the lubrication interface of a low-loss permanent magnet generator proposed in this utility model.

[0029] Legend:

[0030] 1. Housing; 2. Stator assembly; 21. Stator frame; 22. Coil frame; 23. Mounting groove; 24. Positioning slot; 3. Heat dissipation assembly; 31. Coolant tank; 32. Electronic cooling chip; 33. Circulation pump; 34. Supply pipe; 35. Heat exchange square tube; 36. Diverter pipe; 37. Heat exchange fins; 38. Return pipe; 4. Rear cover; 5. Bearing bracket; 6. Front cover; 7. Bearing; 8. Permanent magnet rotor; 9. Lubrication interface; 10. Lubrication channel; 11. Sealing assembly; 111. Sealing plug; 112. Cover; 113. Locking hole; 114. Telescopic locking pin. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-3 This utility model provides an embodiment of a low-loss permanent magnet generator, comprising a housing 1, a stator assembly 2 disposed inside the housing 1, the stator assembly 2 including a stator frame 21, the outer surface of the stator frame 21 being attached to the inner surface of the housing 1, a plurality of coil frames 22 being fixedly connected in a ring on the inner wall of the stator frame 21, a plurality of mounting grooves 23 being provided on the outer wall of the stator frame 21 near the coil frames 22, the plurality of coil frames 22 and mounting grooves 23 being arranged in a one-to-one correspondence, and a positioning slot 24 being provided on the outer wall of the stator frame 21 between the plurality of mounting grooves 23, a heat dissipation assembly 3 for reducing heat loss inside the generator being disposed between the housing 1 and the outer surface of the stator assembly 2, the heat dissipation assembly 3 including a coolant tank 31, the outer wall of the coolant tank 31 being fixedly connected to the outer surface of the housing 1, an electronic cooling chip 32 being fixedly connected to the surface of the coolant tank 31 for circulating coolant in the coolant tank 31 for cooling, a circulation pump 33 for providing power for the circulation of coolant being fixedly connected to the upper surface of the coolant tank 31, one end of the circulation pump 33 A liquid supply pipe 34 is fixedly connected to the other end of the liquid supply pipe 34, and a heat exchange square tube 35 is fixedly connected to the other end of the liquid supply pipe 34. A diversion pipe 36 is connected through the outer surface of the heat exchange square tube 35. The inner wall of the mounting groove 23 is adapted to the outer wall size of the heat exchange square tube 35, and the inner wall of the positioning slot 24 is adapted to the outer wall size of the diversion pipe 36. The heat exchange square tube 35 and the mounting groove 23 are set one-to-one. A heat exchange fin 37 is fixedly connected to the lower surface of the heat exchange square tube 35. A return pipe 38 is fixedly connected to the bottom end of the coolant tank 31. The heat exchange square tube 35 located at the bottom is connected through the heat dissipation assembly 3. The heat exchange square tube 35 with heat exchange fins 37 is built into multiple mounting grooves 23 set in the corresponding coil frame 22 and connected through the diversion pipe 36. Driven by the circulation pump 33, the coolant inside the coolant tank 31 can circulate inside the heat exchange square tube 35 connected by the diversion pipe 36, so as to exchange and cool the heat inside the shell 1, thereby reducing the heat loss of the generator and extending its service life.

[0033] Reference Figure 1 , Figure 2 and Figure 4The rear end of the housing 1 is threadedly connected to a rear cover 4, and a bearing bracket 5 is fixedly connected inside the rear cover 4. The front end of the housing 1 is threadedly connected to a front cover 6, and a bearing 7 is embedded in the center of the surface of the front cover 6. A permanent magnet rotor 8 is rotatably connected between the inner walls of the bearing 7 and the bearing bracket 5. A lubrication interface 9 for lubricating the bearing 7 and the bearing bracket 5 and reducing friction is fixedly connected to the upper surfaces of the rear cover 4 and the front cover 6. A lubrication channel 10 is connected through the rolling elements inside the bearing 7 and the bearing bracket 5 and the interior of the lubrication interface 9. A sealing assembly 11 is provided between the upper surface of the lubrication interface 9 and the interior of the lubrication channel 10 for sealing the lubrication interface 9 and the lubrication channel 10. The sealing assembly 11 includes a sealing plug 111 and a telescopic pin 114. The outer wall of the sealing plug 111 is fitted and connected to the interior of the lubrication interface 9 and the lubrication channel 10. The top of the sealing plug 111 is fixedly connected to the cover 112, and the end of the telescopic pin 114 is fixedly snapped onto the outer surface of the lubrication interface 9. The telescopic pin 114 is composed of two sleeves that are slidably connected and have a built-in telescopic spring. The outer surface of the cover 112 has a snap hole 113. The inner wall of the snap hole 113 is adapted to the outer wall size of the telescopic end of the telescopic pin 114. Through the lubrication interface 9, the lubrication channel 10, and the sealing assembly 11, the lubrication channel 10 makes the lubrication interface 9 and the internal rolling elements of the bearing 7 and the bearing bracket 5 pass through each other. This facilitates the installation of the sealing plug 111 at the lubrication interface 9 by the telescopic pin 114 combined with the cover 112 with the snap hole 113 for flexible installation and removal of the bearing 7 and the bearing bracket 5, thereby reducing mechanical losses from friction and effectively reducing the losses of the permanent magnet generator and improving efficiency.

[0034] Working Principle: During generator operation, the heat generated by the current passing through the conductor can be dissipated through the heat exchange square tubes 35 built into the multiple mounting grooves 23 on the coil frame 22. The heat exchange square tubes 35 are equipped with heat exchange fins 37 and are connected via a distribution pipe 36. Under the action of the circulating pump 33, the coolant in the coolant tank 31 circulates within the heat exchange square tubes 35 connected by the distribution pipe 36, thereby cooling the heat inside the generator housing 1. Furthermore, the losses caused by mechanical friction during generator operation can be mitigated through the lubrication channels 10 on the rear cover 4 and the front cover 6, connecting the lubrication interface 9 to the rolling elements inside the bearing 7 and bearing bracket 5. The sealing plug 111 can be flexibly installed or removed at the lubrication interface 9 via the telescopic pin 114 and the cover 112 with locking holes 113, providing lubrication for the bearing 7 and bearing bracket 5, reducing friction and heat loss, thereby effectively reducing the overall loss of the permanent magnet generator, improving its efficiency, and extending its service life.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-loss permanent magnet generator, comprising a housing (1), characterized in that: The rear end of the housing (1) is threadedly connected to a rear cover (4), and a bearing bracket (5) is fixedly connected inside the rear cover (4). The front end of the housing (1) is threadedly connected to a front cover (6), and a bearing (7) is embedded in the center of the surface of the front cover (6). A permanent magnet rotor (8) is rotatably connected between the bearing (7) and the inner wall of the bearing bracket (5). A stator assembly (2) is provided inside the housing (1), and a heat dissipation assembly (3) is provided between the outer surface of the housing (1) and the stator assembly (2). The heat dissipation assembly (3) includes a coolant tank (31), the outer wall of which is fixedly connected to the outer surface of the housing (1), an electronic cooling chip (32) is fixedly connected to the surface of the coolant tank (31), a circulation pump (33) is fixedly connected to the upper surface of the coolant tank (31), a supply pipe (34) is fixedly connected to one end of the circulation pump (33), a heat exchange square tube (35) is fixedly connected to the other end of the supply pipe (34), a diversion pipe (36) is connected through the outer surface of the heat exchange square tube (35), heat exchange fins (37) are fixedly connected to the lower surface of the heat exchange square tube (35), and a return pipe (38) is fixedly connected to the bottom end of the coolant tank (31).

2. The low-loss permanent magnet generator according to claim 1, characterized in that: The stator assembly (2) includes a stator frame (21), the outer surface of which is attached to the inner surface of the housing (1), and a coil frame (22) is fixedly connected to the inner wall of the stator frame (21). The outer wall of the stator frame (21) near the coil frame (22) is provided with an installation groove (23).

3. A low-loss permanent magnet generator according to claim 2, characterized in that: The coil frame (22) and mounting groove (23) are arranged in a ring at equal intervals. The multiple coil frames (22) and mounting grooves (23) are arranged in a one-to-one correspondence. The outer wall of the stator frame (21) is provided with a positioning slot (24) between the multiple mounting grooves (23).

4. A low-loss permanent magnet generator according to claim 3, characterized in that: The inner wall of the mounting groove (23) is adapted to the outer wall size of the heat exchange square tube (35), and the inner wall of the positioning slot (24) is adapted to the outer wall size of the diversion pipe (36).

5. A low-loss permanent magnet generator according to claim 4, characterized in that: The heat exchange square tube (35) is provided in a one-to-one correspondence with the mounting groove (23), and the return pipe (38) is connected to the heat exchange square tube (35) located at the bottom.

6. A low-loss permanent magnet generator according to claim 1, characterized in that: The upper surfaces of the rear cover (4) and the front cover (6) are fixedly connected to a lubrication interface (9). The inner rolling element of the bearing (7) and the bearing bracket (5) are connected to the inside of the lubrication interface (9) through a lubrication channel (10). A sealing component (11) is provided between the upper surface of the lubrication interface (9) and the inside of the lubrication channel (10).

7. A low-loss permanent magnet generator according to claim 6, characterized in that: The sealing assembly (11) includes a sealing plug (111) and a telescopic pin (114). The outer wall of the sealing plug (111) is fitted and connected to the inside of the lubrication interface (9) and the lubrication channel (10). A cover (112) is fixedly connected to the top of the sealing plug (111), and the end of the telescopic pin (114) is fixedly engaged with the outer surface of the lubrication interface (9).

8. A low-loss permanent magnet generator according to claim 7, characterized in that: The outer surface of the cover (112) is provided with a card hole (113), and the inner wall of the card hole (113) is adapted to the outer wall size of the telescopic end of the telescopic pin (114).

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