Low-noise water-cooled permanent magnet synchronous motor

Abstract

The utility model discloses a low-noise water-cooled permanent magnet synchronous motor, which relates to the field of permanent magnet synchronous motors, and comprises a shell and a cooling coil, the outer wall of the shell is provided with a cooling cavity, and the water inlet end and the water outlet end of the cooling coil are connected with connecting discs. Through the arrangement of the dismounting assembly, if the cooling coil needs to be connected with an external water pipe, the inserting plate on the pipe body can be inserted into the inserting groove, meanwhile, the sealing ring can be clamped into the sealing groove, and at the moment, a worker rotates the abutting ring to enable the abutting ring to move and push the pressing rod to move towards the interior of the groove; the pressing rod can drive the locking column to move and stretch the spring at the same time, the locking column moves into the corresponding locking hole, then the purpose of clamping and fixing the pipe body is achieved, the abutting ring does not need to be rotated after clamping, the pipe body can be rapidly installed in the mode, a plurality of bolts do not need to be used for connection and fixing, only one abutting ring needs to be rotated, and the pipe body can be rapidly installed. Operation steps are simple, and disassembly is convenient.

Description

Technical Field

[0001] The utility model relates to the field of permanent magnet synchronous motors, and specifically relates to a low-noise water-cooled permanent magnet synchronous motor. Background Technique

[0002] At present, motors for automobiles are different from power devices in other fields and have higher requirements, such as small volume, light weight, high efficiency, large torque at low speed, constant power at high speed, wide speed regulation range, etc., so as to reflect the comfort of new energy cars and improve the market recognition rate and occupancy rate. Permanent magnet synchronous motors are more and more widely used in the field of new energy cars due to their small volume, good performance, high efficiency, high reliability and other characteristics.

[0003] According to the Chinese patent with the publication number CN217904170U, a water-cooled permanent magnet synchronous motor is disclosed. The utility model forms a cooling cavity between the upper shell cover and the lower shell cover and the outer shell after being assembled by arranging heat conduction blocks, heat conduction plates, condensation coiled pipes, an upper shell cover and a lower shell cover. The cooling cavity is kept at a low temperature through the condensation coiled pipes, and efficient heat exchange is generated between the cooling cavity and the inside of the outer shell by using the heat conduction blocks and the heat conduction plates, so as to reduce the temperature inside the outer shell, thereby achieving the improvement of the heat dissipation performance of the motor.

[0004] Aiming at the above-mentioned disclosed patent content, since the cooling coiled pipe needs to be connected to an external water pipe, and most of the connection methods use the cooperation of a flange and a bolt for connection, it is necessary to align the flanges during the connection process, and then the bolt can be screwed into the corresponding bolt hole to achieve the purpose of stable connection. However, the flange may shift during installation, making it difficult to align the bolt holes, resulting in difficulty in accurately screwing the bolt into the bolt hole. Therefore, it is necessary to adjust the position of the flange to align the threaded holes, and this operation process is relatively troublesome, thereby reducing the connection efficiency between the cooling coiled pipe and the external water pipe. Content of the Utility Model

[0005] Based on this, the purpose of the utility model is to provide a low-noise water-cooled permanent magnet synchronous motor to solve the technical problem of inconveniently and quickly connecting the cooling coiled pipe with an external water pipe.

[0006] To achieve the above object, the present utility model provides the following technical solution: a low-noise water-cooled permanent magnet synchronous motor, comprising a housing and a cooling coil. A cooling cavity is provided on the outer wall of the housing. Both the water inlet end and the water outlet end of the cooling coil are connected with connection plates. A disassembly and assembly component is provided on the connection plates. The disassembly and assembly component includes sealing grooves and four slots opened on the two connection plates, four grooves opened in the connection plates, and a pressing ring sleeved on the outer wall of the connection plates. An insertion plate is inserted into the slot, and a locking hole is opened on one side of the insertion plate. A spring is installed in the groove, and one end of the spring is connected with a locking column extending into the locking hole. One end of the locking column is installed with a pressing rod penetrating to the outside of the connection plate.

[0007] By adopting the above technical solution, after the insertion plate is inserted into the slot, at this time, the worker rotates the pressing ring, so that the pressing ring moves and pushes the pressing rod to move into the groove, and the pressing rod will drive the locking column to move.

[0008] Further, a sealing ring is clamped in the sealing groove, and pipe bodies are connected to both the sealing ring and the insertion plate.

[0009] By adopting the above technical solution, after the sealing ring is inserted into the sealing groove, the sealing performance between the pipe body and the connection plate can be improved, preventing the leakage of cooling water.

[0010] Further, a stator is installed inside the housing, and end covers are installed at both ends of the housing.

[0011] By adopting the above technical solution, the end covers can seal both ends of the housing, thereby improving the sealing performance of the housing and preventing external impurities from entering the housing.

[0012] Further, a rotating shaft is connected between the two end covers through bearings. A rotor is provided on the outer wall of the rotating shaft, and the rotor is located inside the stator.

[0013] By adopting the above technical solution, the setting of the bearings facilitates the rotation of the rotating shaft.

[0014] Further, a heat conduction ring is also installed inside the cooling cavity, and the cooling coil is installed on the outer wall of the heat conduction ring.

[0015] By adopting the above technical solution, the cooling water flowing inside the cooling coil will absorb the heat conducted by the heat conduction ring, thereby achieving the purpose of dissipating heat from the motor.

[0016] Further, a plurality of heat conduction blocks extending into the housing are installed on the inner wall of the heat conduction ring.

[0017] By adopting the above technical solution, so that the heat inside the housing can be conducted to the heat conduction ring through the heat conduction blocks, thereby facilitating heat dissipation.

[0018] Furthermore, a cover body is installed on the outer wall of the housing, and the cooling cavity is located inside the cover body.

[0019] By adopting the above technical solution, the cover body can shield and protect the cooling cavity to prevent external impurities from entering the cooling cavity.

[0020] Furthermore, the insertion plate is adapted to the insertion slot, and the sealing ring is adapted to the sealing groove.

[0021] By adopting the above technical solution, when the pipe body needs to be connected to the cooling coil pipe, the sealing ring on the pipe body can be inserted into the sealing groove, and at the same time, the insertion plate will be inserted into the insertion slot to position the pipe body first.

[0022] Furthermore, the locking column is adapted to the locking hole, and the locking column is slidably connected to the groove.

[0023] By adopting the above technical solution, after the locking column is moved into the locking hole, the insertion plate can be locked and limited to prevent the insertion plate from moving randomly.

[0024] Furthermore, threads are provided on both the inner wall of the pressing ring and the outer wall of the connecting disc, and the pressing ring is threadedly connected to the connecting disc.

[0025] By adopting the above technical solution, it is convenient for the staff to move the pressing ring when rotating the pressing ring so as to adjust the position of the pressing ring.

[0026] In summary, the main beneficial effects of the present utility model are as follows:

[0027] By providing a disassembly and assembly component in the present utility model, when the cooling coil pipe needs to be connected to an external water pipe, the insertion plate on the pipe body can be inserted into the insertion slot, and at the same time, the sealing ring will be stuck into the sealing groove. At this time, the staff rotates the pressing ring, so that the pressing ring moves and pushes the pressing rod into the groove, and the pressing rod drives the locking column to move and stretches the spring at the same time. The locking column then moves into the corresponding locking hole, thereby achieving the purpose of clamping and fixing the pipe body. After clamping, it is not necessary to rotate the pressing ring anymore. In this way, the pipe body can be quickly installed without using multiple bolts for connection and fixation. Only by rotating one pressing ring, the operation steps are simple, and the disassembly is also relatively convenient, thereby improving the connection efficiency between the pipe body and the cooling coil pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the overall three-dimensional structure schematic diagram of the present utility model;

[0029] Figure 2 is the overall front sectional structure schematic diagram of the present utility model;

[0030] Figure 3Schematic three-dimensional structure diagram of the cooling coil of the present utility model;

[0031] Figure 4 Schematic three-dimensional structure diagram of the connection disk of the present utility model;

[0032] Figure 5 Schematic three-dimensional structure diagram of the tightening ring of the present utility model;

[0033] Figure 6 For the present utility model Figure 2 Enlarged structure diagram of position A in

[0034] In the figure: 1. Outer shell; 2. End cover; 3. Rotating shaft; 4. Rotor; 5. Stator; 6. Cover body; 7. Bearing; 8. Cooling cavity; 9. Disassembly and assembly component; 901. Slot; 902. Insertion plate; 903. Locking column; 904. Locking hole; 905. Sealing ring; 906. Sealing groove; 907. Groove; 908. Spring; 909. Pressing rod; 910. Tightening ring; 10. Cooling coil; 11. Heat conduction ring; 12. Heat conduction block; 13. Connection disk; 14. Pipe body. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.

[0036] Next, according to the overall structure of the present utility model, its embodiments will be described.

[0037] Embodiment 1:

[0038] A low-noise water-cooled permanent magnet synchronous motor, as Figures 1 - 6 shown, includes an outer shell 1 and a cooling coil 10. A cooling cavity 8 is provided on the outer wall of the outer shell 1. Both the water inlet end and the water outlet end of the cooling coil 10 are connected with a connection disk 13. A disassembly and assembly component 9 is provided on the connection disk 13. A stator 5 is installed inside the outer shell 1. End covers 2 are installed at both ends of the outer shell 1. The end covers 2 can seal both ends of the outer shell 1, thereby improving the sealing performance of the outer shell 1 and preventing external impurities from entering the inside of the outer shell 1. A rotating shaft 3 is connected between the two end covers 2 through a bearing 7. A rotor 4 is provided on the outer wall of the rotating shaft 3, and the rotor 4 is located inside the stator 5. The setting of the bearing 7 facilitates the rotation of the rotating shaft 3.

[0039] Refer to Figures 1 - 3, a heat conduction ring 11 is also installed inside the cooling cavity 8. A cooling coil 10 is installed on the outer wall of the heat conduction ring 11. When the cooling water inside the cooling coil 10 flows, it will absorb the heat conducted by the heat conduction ring 11, so as to achieve the purpose of dissipating heat from the motor. A plurality of heat conduction blocks 12 extending into the housing 1 are installed on the inner wall of the heat conduction ring 11, so that the heat inside the housing 1 can be conducted to the heat conduction ring 11 through the heat conduction blocks 12, thus facilitating heat dissipation. A cover body 6 is also installed on the outer wall of the housing 1. The cooling cavity 8 is located inside the cover body 6. The cover body 6 can shield and protect the cooling cavity 8 to prevent external impurities from entering the cooling cavity 8.

[0040] Specifically, the disassembly and assembly component 9 includes sealing grooves 906 and four slots 901 opened on two connecting plates 13, four grooves 907 opened inside the connecting plates 13, and a pressing ring 910 sleeved on the outer wall of the connecting plates 13. Threads are provided on both the inner wall of the pressing ring 910 and the outer wall of the connecting plate 13. The pressing ring 910 is threadedly connected to the connecting plate 13, which is convenient for the staff to move the pressing ring 910 when rotating the pressing ring 910, so as to adjust the position of the pressing ring 910. An insertion plate 902 is inserted into the slot 901, and a locking hole 904 is opened on one side of the insertion plate 902. A spring 908 is installed inside the groove 907, and one end of the spring 908 is connected with a locking column 903 extending into the locking hole 904. The locking column 903 is adapted to the locking hole 904, and the locking column 903 is slidably connected to the groove 907. After the locking column 903 is moved into the locking hole 904, the insertion plate 902 can be locked and limited to prevent the insertion plate 902 from moving randomly. One end of the pressing rod 909 and the inner wall of the pressing ring 910 are both provided with inclined surfaces, so that when the pressing ring 910 is rotated, the movement of the pressing ring 910 will push the pressing rod 909 to move, and when the pressing ring 910 is rotated in the reverse direction, the pressing ring 910 will no longer press the pressing rod 909, and the stretching of the spring 908 will drive the locking column 903 and the pressing rod 909 to move back to their original positions.

[0041] Specifically, one end of the locking column 903 is installed with a pressing rod 909 penetrating to the outside of the connecting plate 13. If the insertion plate 902 is inserted into the slot 901, at this time, the staff rotates the pressing ring 910, so that the pressing ring 910 moves and pushes the pressing rod 909 into the groove 907, and the pressing rod 909 will drive the locking column 903 to move. The insertion plate 902 is adapted to the slot 901. When the pipe body 14 needs to be connected to the cooling coil 10, the insertion plate 902 on the pipe body 14 can be inserted into the slot 901 to position the pipe body 14 first.

[0042] Embodiment Three:

[0043] On the basis of the above Embodiment One, in order to improve the sealing performance between the pipe body 14 and the cooling coil 10, the following structure is set.

[0044] Refer toFigure 2 , Figure 4 , Figure 5 and Figure 6 , a sealing ring 905 is clamped in the sealing groove 906. Pipe bodies 14 are connected to both the sealing ring 905 and the plug board 902. The sealing ring 905 is adapted to the sealing groove 906. After the sealing ring 905 is inserted into the sealing groove 906, the sealing performance between the pipe body 14 and the connection disk 13 can be improved, preventing the leakage of cooling water.

[0045] The working principle of the present utility model is as follows: First, when it is necessary to connect both the water inlet end and the water outlet end of the cooling coil 10 to the external pipe body 14, the staff can insert the plug board 902 on the pipe body 14 into the slot 901. At the same time, the sealing ring 905 will be stuck into the sealing groove 906. At this time, the staff rotates the tightening ring 910, causing the tightening ring 910 to move and push the pressure rod 909 into the groove 907. The pressure rod 909 drives the locking column 903 to move and stretches the spring 908 at the same time. The locking column 903 then moves into the corresponding locking hole 904, thereby achieving the purpose of clamping and fixing the pipe body 14. After clamping, it is no longer necessary to rotate the tightening ring 910. In this way, the installation of the pipe body 14 can be completed.

[0046] When the permanent magnet synchronous motor works, cooling water can be introduced into the cooling coil 10 to reduce the temperature inside the cooling cavity 8. At the same time, the temperature inside the housing 1 is conducted to the cooling cavity 8 by the heat conducting block 12 and the heat conducting ring 11 for heat exchange with the low temperature inside the cooling cavity 8, thereby reducing the temperature inside the housing 1.

[0047] Although the embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model and not limitations thereof. The described specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A low-noise water-cooled permanent magnet synchronous motor, comprising a housing (1) and a cooling coil (10), characterized in that: The outer wall of the housing (1) is provided with a cooling cavity (8); the water inlet and the water outlet of the cooling coil (10) are both connected to a connecting plate (13); the connecting plate (13) is provided with a disassembly assembly (9); and the disassembly assembly (9) comprises a sealing groove (906) and four slots (901) provided on the two connecting plates (13), four grooves (907) provided in the connecting plate (13), and a tight fit sleeved on the outer wall of the connecting plate (13). A ring (910) is provided, a plug plate (902) is inserted into the interior of the slot (901), and a locking hole (904) is provided on one side of the plug plate (902), a spring (908) is installed inside the groove (907), and one end of the spring (908) is connected to a locking column (903) extending into the locking hole (904), and one end of the locking column (903) is installed with a pressure rod (909) penetrating to the outside of the connecting plate (13).

2. A low-noise water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: A sealing ring (905) is clamped in the sealing groove (906), and a tube body (14) is connected to both the sealing ring (905) and the plug plate (902).

3. A low-noise water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: A stator (5) is installed inside the shell (1), and end covers (2) are installed at both ends of the shell (1).

4. A low-noise water-cooled permanent magnet synchronous motor according to claim 3, characterized in that: A rotating shaft (3) is connected between the two end covers (2) via a bearing (7), a rotor (4) is provided on the outer wall of the rotating shaft (3), and the rotor (4) is located inside the stator (5).

5. The low-noise water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: A heat-conducting ring (11) is also installed inside the cooling cavity (8), and a cooling coil (10) is installed on the outer wall of the heat-conducting ring (11).

6. A low-noise water-cooled permanent magnet synchronous motor according to claim 5, characterized in that: The inner wall of the heat-conducting ring (11) is provided with a plurality of heat-conducting blocks (12) extending into the outer shell (1).

7. The low-noise water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: A cover body (6) is also installed on the outer wall of the shell (1), and the cooling cavity (8) is located inside the cover body (6).

8. The low-noise water-cooled permanent magnet synchronous motor according to claim 2, characterized in that: The plug plate (902) is matched with the slot (901), and the sealing ring (905) is matched with the sealing groove (906).

9. The low-noise water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: The locking column (903) is adapted to the locking hole (904), and the locking column (903) is slidably connected to the groove (907).

10. The low-noise water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: The inner wall of the clamping ring (910) and the outer wall of the connecting plate (13) are both provided with threads, and the clamping ring (910) and the connecting plate (13) are connected by threads.

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