Liquid-cooled motor base

Abstract

The utility model belongs to the field of supports of motors with channels or conduits for cooling medium flow, and particularly relates to a liquid-cooled motor base. In order to solve the technical problems that in a water-cooling servo joint motor in the prior art, a stator is installed on a shell, so that a liquid-cooling base can only absorb heat of the stator through heat conduction from one axial end of the stator to cool the stator, and the cooling effect on the stator is poor, the utility model provides a liquid-cooling motor base. The liquid cooling motor base comprises an installation cylinder used for installing a stator and avoiding a speed reducer assembly, a cooling flow channel is arranged in the cylinder wall of the installation cylinder, the installation cylinder is provided with a liquid inlet and a liquid outlet, the cooling flow channel comprises a longitudinal section formed by punching in the axial direction of the installation cylinder from the end face of the installation cylinder, and the liquid inlet and the liquid outlet are both communicated with the longitudinal section. The stator is installed on the installation cylinder, and the cylinder wall of the installation cylinder is internally provided with the cooling flow channel, so that the stator can be directly cooled from the inner wall surface of the stator, and the cooling effect is improved.

Description

Technical Field

[0001] The utility model belongs to the field of motor supports with channels or conduits for cooling medium flow, in particular to a liquid-cooled motor base. Background Art

[0002] Motors are needed in robots. Under special working conditions, the motors need to be light, thin and have high torque. Currently, only the outer rotor brushless permanent magnet joint motor can meet the requirements. The outer rotor in the outer rotor brushless permanent magnet joint motor achieves high torque and small volume output through a reduction mechanism.

[0003] For example, a Chinese utility model patent with authorization announcement number CN213990330U and authorization announcement date 2021.08.17 discloses a brushless motor with a coil wire joint welding method. The brushless motor includes a stator seat (i.e., a motor base), the stator seat includes a base plate and a cylindrical seat sleeve (i.e., an installation cylinder) arranged in the center of the base plate, the coil winding (i.e., the stator) is installed on the outer wall surface of the cylindrical seat sleeve, and the reduction shaft extends into the hollow part of the cylindrical seat sleeve.

[0004] When the above brushless motor is used, the brushless motor will generate more heat, which affects the performance of the brushless motor.

[0005] To solve the above problems, a Chinese utility model patent with authorization announcement number CN219204261U and authorization announcement date 2023.06.16 discloses a water-cooled servo joint motor (i.e., an outer rotor brushless permanent magnet joint motor), which includes a reducer assembly, a rotor assembly, a stator assembly, and a liquid cooling base, and the liquid cooling base includes a base body, and the base body is provided with a liquid inlet, a liquid outlet, and a cooling channel. The stator assembly has an installation space for inserting the reducer assembly, specifically, the reducer assembly is installed on the rotor assembly, and the rotor assembly is coaxially installed in the stator assembly through the installation space, and the rotor assembly and the stator assembly constitute a rotating pair; the stator assembly includes a housing and a stator, and the stator is installed on the outer surface of the mounting column on the inner side of the housing, and the liquid cooling base is installed on the side of the housing axially away from the rotor assembly, and the stator is attached to or close to the side of the housing connected to the liquid cooling base.

[0006] In the above-mentioned water-cooled servo joint motor, since the drive board is built-in, the mounting column is part of the outer shell, and the stator is installed on the outer shell, so that the liquid cooling base can only absorb the heat of the stator through heat conduction from one end of the stator axis to cool the stator, and cannot cool the stator from the inner wall surface of the stator, which leads to poor cooling effect of the liquid cooling base on the stator. Utility Model Content

[0007] The purpose of the utility model is to provide a liquid-cooled motor base to solve the technical problem that in the water-cooled servo joint motor in the prior art, since the stator is installed on the outer casing, the stator cannot be cooled from the inner wall surface of the stator, resulting in poor cooling effect of the liquid-cooled base on the stator.

[0008] In order to achieve the above-mentioned purpose, the technical solution of the liquid-cooled motor base provided by the utility model is:

[0009] A liquid-cooled motor base includes a mounting tube for mounting a stator and a reducer assembly, a cooling channel is provided in the wall of the mounting tube, a liquid inlet and a liquid outlet are provided on the mounting tube, the cooling channel includes a longitudinal section extending from one end to the other end on the end surface of the mounting tube, and the liquid inlet and the liquid outlet are both connected to the longitudinal section.

[0010] Furthermore, at least two longitudinal segments are arranged along the circumference of the mounting cylinder.

[0011] Furthermore, a side wall of the mounting tube at one end away from the reducer assembly when in use has a connecting hole connected to each longitudinal section respectively, and each longitudinal section is connected in series or in parallel through the connecting hole.

[0012] Furthermore, the number of longitudinal segments is an even number greater than 2, and the longitudinal segments are connected in series through connecting holes, one of the connecting holes is the liquid inlet, and the other connecting hole is the liquid outlet. The longitudinal segment connected to the liquid inlet is defined as the liquid inlet segment, the longitudinal segment connected to the liquid outlet is defined as the liquid outlet segment, and the remaining longitudinal segments are intermediate segments. Adjacent intermediate segments are connected in series through connecting holes so that the liquid inlet segment, the intermediate segment and the liquid outlet segment are connected in series in sequence.

[0013] Furthermore, a collar is disposed on the outer shell of the installation tube, and the collar and the outer wall surface of the installation tube form a chamber for connecting the longitudinal sections, so as to realize the series or parallel connection of the longitudinal sections.

[0014] Furthermore, the number of longitudinal sections is an even number greater than 2, and the longitudinal sections are connected in series through connecting holes, one of the connecting holes is the liquid inlet, and the other connecting hole is the liquid outlet. The longitudinal section connected with the liquid inlet is defined as the liquid inlet section, the longitudinal section connected with the liquid outlet is defined as the liquid outlet section, and the remaining longitudinal sections are intermediate sections; the chamber surrounded by the outer wall surface of the collar and the mounting tube is divided into mutually independent liquid inlet chambers, liquid outlet chambers and connecting chambers, the liquid inlet chamber is connected with the liquid inlet, the liquid outlet chamber is connected with the liquid outlet, and the connecting chamber is connected with the connecting holes corresponding to adjacent intermediate sections to realize the series connection of adjacent intermediate sections; the collar is provided with a liquid inlet hole connected with the liquid inlet chamber and used for externally connecting to a liquid inlet pipe, and the collar is also provided with a liquid outlet hole connected with the liquid outlet chamber and used for externally connecting to a liquid outlet pipe.

[0015] Furthermore, the liquid-cooled motor base also includes a bottom plate, the mounting tube is fixedly connected to the bottom plate, and the sleeve is fixedly mounted on the bottom plate.

[0016] Furthermore, a groove is provided on the end surface of the mounting tube close to the reducer assembly when in use, and a sealing ring for sealing the groove is installed on the end of the mounting tube close to the reducer assembly when in use, so that the groove forms a connecting flow channel for connecting different longitudinal sections.

[0017] Furthermore, the number of the longitudinal segments is an even number greater than 2, the number of the connecting flow channels is half the number of the longitudinal segments, and the longitudinal segments are connected in series through the connecting flow channels.

[0018] Furthermore, the groove on the mounting cylinder is an annular groove, and a blocking block for separating the annular groove is provided on the sealing ring to form at least two communicating flow channels.

[0019] The beneficial effects of the liquid-cooled motor base of the utility model are as follows: the utility model is an improved invention. The stator and the avoidance reducer assembly can be installed through the installation cylinder, ensuring that the liquid-cooled joint motor can be assembled normally; the coolant can fully cool the installation cylinder through the longitudinal section; the coolant in the cooling channel can be replaced at any time through the liquid inlet and the liquid outlet to ensure cooling efficiency; because the stator is installed on the installation cylinder, and the installation cylinder has a longitudinal section in the cylinder wall, the installation cylinder can directly cool the stator from the inner wall surface of the stator, thereby improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the embodiment of the liquid-cooled motor base of the utility model after the stator is installed;

[0021] Figure 2 This is a front view of the embodiment of the liquid-cooled motor base of the utility model after the stator is installed;

[0022] Figure 3 It is a cross-sectional view of the embodiment of the liquid-cooled motor base of the utility model after the stator is installed;

[0023] Figure 4 This is a partial schematic diagram of an embodiment of the liquid-cooled motor base of the utility model, omitting part of the mounting cylinder and the collar at an angle;

[0024] Figure 5 This is a partial schematic diagram from another angle of the embodiment of the liquid-cooled motor base of the utility model, omitting part of the mounting cylinder and the collar.

[0025] Description of reference numerals:

[0026] 1. Bottom plate; 2. Ring; 21. Liquid inlet chamber; 22. Connecting chamber; 23. Liquid outlet chamber; 3. Installation space; 4. Sealing ring; 41. Blocking block; 5. Stator; 6. Liquid inlet joint; 7. Liquid outlet joint; 8. Mounting cylinder; 91. Liquid inlet section; 92. Middle section; 93. Liquid outlet section; 10. Connecting flow channel; 11. Connecting hole; 111. Liquid inlet; 112. Liquid outlet; 12. Mounting part; 13. Mounting hole. DETAILED DESCRIPTION

[0027] In order to solve the problems raised in the background technology and improve the cooling effect on the stator, the main inventive concept of the utility model is: by arranging a longitudinal section extending from one end to the other end on the end face of the mounting tube in the mounting tube for mounting the stator, thereby ensuring that the temperature of the mounting tube is at a lower value, and then the mounting tube can directly cool the stator from the inner wall surface of the stator, thereby improving the cooling effect of the liquid-cooled motor base.

[0028] The present invention is further described in detail below in conjunction with the embodiments.

[0029] Specific embodiments of the liquid-cooled motor base provided by the utility model:

[0030] like Figure 1-5 As shown, the liquid-cooled motor base includes a mounting cylinder 8 for mounting a stator 5 and avoiding a reducer assembly, the outer wall surface of the mounting cylinder 8 constitutes a mounting portion 12 for mounting the stator 5, and the inner wall surface of the mounting cylinder 8 forms an installation space 3 for inserting the reducer assembly; a cooling channel is provided in the cylinder wall of the mounting cylinder 8, and a liquid inlet 111 and a liquid outlet 112 are provided on the mounting cylinder 8, and the cooling channel includes a longitudinal section extending from one end to the other end on the end surface of the mounting cylinder 8, and the liquid inlet 111 and the liquid outlet 112 are both connected to the longitudinal section.

[0031] Specifically, the liquid-cooled motor base also includes a base plate 1, and the mounting tube 8 is fixedly connected to the base plate 1, and the mounting tube 8 and the base plate 1 constitute the base body. In the liquid-cooled joint motor, since the reducer assembly needs to extend into the mounting space 3 formed by the mounting tube 8, the wall thickness of the mounting tube 8 is relatively thin, and the longitudinal section is directly manufactured from the end surface of the mounting tube 8, which is convenient for processing the longitudinal section and can ensure the structural strength of the mounting tube 8. Specifically, the longitudinal section can be processed by punching or casting.

[0032] The stator 5 can be installed on the mounting tube 8 through the mounting portion 12, and the mounting space 3 can avoid interference between the mounting tube 8 and the reducer assembly, thereby ensuring that the liquid-cooled joint motor can be assembled normally; the coolant can fully cool the mounting tube 8 through the longitudinal section; the coolant in the cooling channel can be replaced at any time through the liquid inlet 111 and the liquid outlet 112 to ensure cooling efficiency; since the stator 5 is installed on the mounting tube 8 and the mounting tube 8 has a longitudinal section in its wall, the mounting tube 8 can cool the stator 5 directly from the inner wall surface of the stator 5, thereby improving the cooling effect.

[0033] like Figure 3-5 As shown, in order to further improve the cooling effect, at least two longitudinal segments are arranged at intervals along the circumference of the mounting barrel 8, specifically, twelve longitudinal segments are arranged at intervals along the circumference of the mounting barrel 8. The cooling effect on the stator 5 is improved by increasing the number of longitudinal segments. Of course, in other specific embodiments, two, three or more longitudinal segments can be arranged at intervals along the circumference of the mounting barrel 8; or, there is only one longitudinal segment, and the liquid inlet pipe and the liquid outlet pipe are connected at both ends of the longitudinal segment.

[0034] like Figure 3-5 As shown, in order to conveniently realize the connection of the longitudinal sections, as a specific embodiment, the side wall of the mounting tube 8 at the end away from the reducer assembly when in use has a connecting hole 11 connected to each longitudinal section respectively, and each longitudinal section is connected in series or in parallel through the connecting hole 11. In other specific embodiments, holes can also be punched on the end surface of the end of the bottom plate 1 away from the mounting tube 8 to form a connecting flow channel located in the mounting tube and located on the bottom plate 1, and the connection of each longitudinal section is realized by connecting the connecting flow channels on the bottom plate 1 in parallel or in series.

[0035] like Figure 3-5 As shown, in order to ensure sufficient heat exchange between the coolant and the stator 5, as a specific implementation method, the longitudinal segments are an even number greater than 2, and the longitudinal segments are connected in series through the connecting holes 11, one of the connecting holes is the liquid inlet 111, and the other connecting hole is the liquid outlet 112. The longitudinal segment connected to the liquid inlet 111 is defined as the liquid inlet segment 91, the longitudinal segment connected to the liquid outlet 112 is defined as the liquid outlet segment 93, and the remaining longitudinal segments are the middle segments 92. The adjacent middle segments 92 are connected in series through the connecting holes 11, so that the liquid inlet segment 91, the middle segment 92 and the liquid outlet segment 93 are connected in series in sequence. The liquid inlet segment 91, the middle segment 92 and the liquid outlet segment 93 are connected in series in sequence, and the coolant flows in the liquid inlet segment 91, the middle segment 92 and the liquid outlet segment 93. The distance is longer, thereby ensuring sufficient heat exchange between the coolant and the stator 5.

[0036] The liquid inlet section 91, the middle section 92 and the liquid outlet section 93 can be conveniently connected in series in sequence through the connecting hole 11. Specifically, Figure 3-5As shown, the number of the liquid inlet section 91 is one, the number of the middle sections 92 is ten, and the number of the liquid outlet section 93 is one, and the liquid inlet section 91, the middle section 92 and the liquid outlet section 93 can be conveniently connected in series in sequence through the connecting hole 11. However, in other specific embodiments, the number of the middle sections 92 can also be two, four or other numbers.

[0037] Of course, in other specific embodiments, the longitudinal section may also only include a liquid inlet section 91 and a liquid outlet section 93 connected in series with the liquid inlet section 91, and the number of liquid inlet sections 91 is six, and the number of liquid outlet sections 93 is six, by connecting six liquid inlets 111 in parallel to achieve the parallel connection of six liquid inlet sections 91, and by connecting six liquid outlets 112 in parallel to achieve the parallel connection of six liquid outlet sections 93.

[0038] like Figure 3-5 As shown, in order to conveniently realize the series connection or parallel connection of each longitudinal segment, as a specific embodiment, a collar 2 is sleeved on the mounting tube 8, and the collar 2 and the outer wall surface of the mounting tube 8 form a chamber for connecting the longitudinal segments to realize the series connection or parallel connection of the longitudinal segments. The collar 2 can realize the connection of all longitudinal segments at one time; of course, in other specific embodiments, the series connection of two adjacent longitudinal segments can also be realized by using a connecting pipe with different connecting holes 11 at both ends; or, the parallel connection of multiple longitudinal segments can be realized by using a connecting pipe that is connected to multiple connecting holes 11 in sequence.

[0039] like Figure 3-5 As shown, in order to conveniently realize the series connection of the liquid inlet section 91, the middle section 92 and the liquid outlet section 93, as a specific implementation method, the chamber surrounded by the outer wall surface of the collar 2 and the mounting tube 8 is divided into a mutually independent liquid inlet chamber 21, a liquid outlet chamber 23 and a connecting chamber 22, the liquid inlet chamber 21 is connected with the liquid inlet port 111, the liquid outlet chamber 23 is connected with the liquid outlet port 112, and the connecting chamber 22 is connected with the connecting hole 11 corresponding to the adjacent middle section 92 to realize the series connection of the adjacent middle sections 92; the collar 2 is provided with a liquid inlet hole connected with the liquid inlet chamber 21 and used for an external liquid inlet pipe, and the collar 2 is also provided with a liquid outlet hole connected with the liquid outlet chamber 23 and used for an external liquid outlet pipe. Specifically, a liquid inlet joint 6 is installed at the liquid inlet hole, and a liquid outlet joint 7 is installed at the liquid outlet hole. The liquid inlet joint 6 can be conveniently connected to an external liquid inlet pipe, and the liquid outlet joint 7 can be conveniently connected to an external liquid outlet pipe. Of course, in other specific embodiments, the liquid inlet pipe can also be welded at the liquid inlet hole, and the liquid outlet pipe can be welded at the liquid outlet hole.

[0040] The series connection of all longitudinal sections can be realized at one time through the collar 2, and the connection is convenient. Of course, in other specific embodiments, the series connection of all longitudinal sections can also be realized through multiple connecting pipes with different connecting holes 11 at both ends.

[0041] like Figure 1-5As shown, in order to conveniently install the collar 2, the collar 2 is fixedly mounted on the base plate 1. Specifically, the collar 2 is fixed to the base plate 1 through the mounting hole 13 and the screw. Of course, in other specific embodiments, the collar 2 can also be fixed to the base plate 1 by welding, pinning, etc., or the collar 2 is fixed to the mounting cylinder 8 by welding, etc.

[0042] like Figure 3-5 As shown, in order to conveniently realize the connection of the longitudinal sections, as a specific implementation, a groove is provided on the end surface of the mounting cylinder 8 close to the reducer assembly when in use, and a sealing ring 4 for sealing the groove is installed at the end of the mounting cylinder 8 close to the reducer assembly when in use, so that the groove forms a connecting flow channel 10 for connecting different longitudinal sections. At the same time, after being installed on the mounting cylinder 8, the sealing ring 4 will not interfere with the rotor assembly and the reducer assembly.

[0043] Specifically, the number of longitudinal segments is an even number greater than 2, the number of connecting channels 10 is half the number of longitudinal segments, and the longitudinal segments are connected in series through the connecting channels 10. As a specific implementation, the number of intermediate segments 92 is ten, the number of connecting channels 10 is half the number of longitudinal segments (i.e., six), the liquid inlet segment 91 and the adjacent intermediate segment 92 are connected through one connecting channel 10, the liquid outlet segment 93 and the adjacent intermediate segment 92 are connected through another connecting channel 10, and the remaining adjacent intermediate segments 92 are connected through other connecting channels 10, so that the liquid inlet segment 91, the intermediate segment 92 and the liquid outlet segment 93 are connected in series in sequence.

[0044] A groove is provided on the end surface of the mounting tube 8 at one end close to the reducer assembly when in use, and the groove is sealed with a sealing ring 4, so that the longitudinal sections can be conveniently connected. However, in other specific embodiments, the sealing ring 4 may not be provided, so that the longitudinal section extends to the end of the mounting tube 8 close to the reducer assembly when in use, and at the same time, the openings corresponding to the longitudinal section on the end surface of at least two mounting tubes 8 close to the reducer assembly when in use are connected by a connecting pipe, so as to realize the series or parallel connection of the longitudinal sections.

[0045] In other specific embodiments, the number of the intermediate sections 92 may also be two, the number of the connecting flow channels may be two, the liquid inlet section 91 and the adjacent intermediate section 92 are connected through one connecting flow channel 10, and the liquid outlet section 93 and the adjacent intermediate section 92 are connected through another connecting flow channel 10, so that the liquid inlet section 91, the intermediate section 92 and the liquid outlet section 93 are connected in series in sequence. Of course, in other specific embodiments, the number of the intermediate sections 92 may also be four, six or other even numbers.

[0046] Of course, in other specific embodiments, when all longitudinal segments are to be connected in parallel, the number of the connecting flow channel 10 is one, and it is connected to all longitudinal segments. In this embodiment, the number of the connecting flow channels 10 is not limited, and can be set according to actual series and parallel needs.

[0047] like Figure 4-5 As shown, in order to conveniently form the connecting flow channel 10, as a specific embodiment, the groove on the mounting cylinder 8 is an annular groove, and the sealing ring 4 is provided with a blocking block 41 for separating the annular groove to form the connecting flow channel 10. The connecting flow channel 10 can be conveniently separated by the blocking block 41. Of course, in other specific embodiments, the mounting cylinder 8 may be provided with grooves whose number is half of the number of longitudinal segments, so that after the sealing ring 4 is installed on the mounting cylinder 8, the connecting flow channel 10 whose number is half of the number of longitudinal segments is formed. Of course, in other specific embodiments, the blocking block 41 may not be provided, so that all the longitudinal segments are connected in parallel.

[0048] On the basis of the existing motor base, through the connecting hole 11, the ring 2, the longitudinal section formed by punching a hole from the end face of the mounting tube 8, the sealing ring 4 and the groove on the end face of the mounting tube 8 away from the base plate 1, the inner wall surface of the stator 5 can be easily cooled, thereby improving the cooling effect of the liquid-cooled motor base.

[0049] Finally, it should be noted that the above are only preferred embodiments of the utility model and are not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A liquid-cooled motor base, comprising a mounting cylinder for mounting a stator and a reducer assembly, characterized in that: The mounting tube has a cooling channel in its wall, a liquid inlet and a liquid outlet on the mounting tube, and the cooling channel includes a longitudinal section extending from one end to the other end on the end surface of the mounting tube, and the liquid inlet and the liquid outlet are both connected to the longitudinal section.

2. The liquid-cooled motor base according to claim 1, characterized in that: At least two longitudinal segments are arranged along the circumference of the mounting cylinder.

3. The liquid-cooled motor base according to claim 2, characterized in that: A connecting hole connected to each longitudinal section is provided on the side wall of the end of the mounting cylinder away from the reducer assembly when in use, and each longitudinal section is connected in series or in parallel through the connecting hole.

4. The liquid-cooled motor base according to claim 3, characterized in that: The number of longitudinal segments is an even number greater than 2, and the longitudinal segments are connected in series through connecting holes, one of which is a liquid inlet, and the other is a liquid outlet. The longitudinal segment connected to the liquid inlet is defined as a liquid inlet segment, the longitudinal segment connected to the liquid outlet is defined as a liquid outlet segment, and the remaining longitudinal segments are intermediate segments. Adjacent intermediate segments are connected in series through connecting holes so that the liquid inlet segment, the intermediate segment, and the liquid outlet segment are connected in series in sequence.

5. The liquid-cooled motor base according to claim 3, characterized in that: A sleeve is disposed outside the installation tube, and the sleeve and the outer wall surface of the installation tube form a chamber for connecting the longitudinal sections, so as to realize the series or parallel connection of the longitudinal sections.

6. The liquid-cooled motor base according to claim 5, characterized in that: The number of longitudinal sections is an even number greater than 2, and the longitudinal sections are connected in series through connecting holes, one of which is a liquid inlet, and the other is a liquid outlet. The longitudinal section connected with the liquid inlet is defined as a liquid inlet section, the longitudinal section connected with the liquid outlet is defined as a liquid outlet section, and the remaining longitudinal sections are intermediate sections; the chamber enclosed by the collar and the outer wall surface of the mounting tube is divided into mutually independent liquid inlet chambers, liquid outlet chambers and connecting chambers, the liquid inlet chamber is connected with the liquid inlet, the liquid outlet chamber is connected with the liquid outlet, and the connecting chamber is connected with the connecting holes corresponding to adjacent intermediate sections to realize the serial connection of adjacent intermediate sections; the collar is provided with a liquid inlet hole connected with the liquid inlet chamber and used for externally connecting to a liquid inlet pipe, and the collar is also provided with a liquid outlet hole connected with the liquid outlet chamber and used for externally connecting to a liquid outlet pipe.

7. The liquid-cooled motor base according to claim 6, characterized in that: The liquid-cooled motor base also includes a bottom plate, the mounting tube is fixedly connected to the bottom plate, and the sleeve ring is fixedly mounted on the bottom plate.

8. The liquid-cooled motor base according to any one of claims 2 to 7, characterized in that: A groove is provided on the end surface of the mounting tube close to the reducer assembly when in use, and a sealing ring for sealing the groove is installed on the end of the mounting tube close to the reducer assembly when in use, so that the groove forms a connecting flow channel for connecting different longitudinal sections.

9. The liquid-cooled motor base according to claim 8, characterized in that: The number of the longitudinal segments is an even number greater than 2, the number of the connecting flow channels is half the number of the longitudinal segments, and the longitudinal segments are connected in series through the connecting flow channels.

10. The liquid-cooled motor base according to claim 9, characterized in that: The groove on the mounting cylinder is an annular groove, and a blocking block for separating the annular groove is provided on the sealing ring to form at least two communicating flow channels.

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