Outer rotor hub motor water cooling structure

Abstract

The utility model relates to the technical field of water cooling structures, and provides a water cooling structure of an outer rotor hub motor, which aims to overcome the defects in the prior art that part of a water pipe is exposed outside, a cooling water pipe is easy to age and damage after being used for a long time, and cooling liquid leaks, and comprises a motor shaft, the surface of the motor shaft is fixedly sleeved with a motor stator, the motor stator is provided with a surface A and a surface B, and the surface A and the surface B are both provided with a plurality of cooling liquid water channels. According to the utility model, cooling liquid flows in from the water inlet, and the cooling liquid circularly flows in the motor stator, so that internal heat is brought out; and heat can be circularly released through external cooling fins or a water tank and then circulated back to the interior of the motor, so that the heat dissipation effect of the equipment is improved, meanwhile, the cooling liquid loss caused by the damage of the cooling water pipe can be avoided, and the practicability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water cooling structures, in particular to a water cooling structure of an outer rotor hub motor. Background Art

[0002] An outer rotor hub motor is an electric motor design in which the rotor (rotating part) is located outside and the stator (stationary part) is located inside. The outer rotor hub motor has broad application prospects in many fields due to its compactness, high efficiency and high performance.

[0003] In the prior art, a stator water-cooling structure of a hub motor (Announcement No.: CN208353089U) is provided with a cooling water pipe and is tightly assembled with the stator by epoxy glue encapsulation. The epoxy glue has good thermal conductivity and better heat dissipation effect. However, the water pipe needs to be installed in a through hole opened in the stator, and part of the water pipe is exposed to the outside. After long-term use, the cooling water pipe is easily damaged due to aging, causing coolant leakage. Therefore, it is urgent to design a water-cooling structure of an outer rotor hub motor that avoids coolant leakage. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art that part of the water pipes are exposed to the outside, the cooling water pipes are easily damaged due to aging after long-term use, and coolant leakage is caused, and a water cooling structure for an outer rotor hub motor is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A water-cooling structure for an outer rotor hub motor comprises a motor shaft, a motor stator is fixedly sleeved on the surface of the motor shaft, the motor stator is provided with an A surface and a B surface, the A surface and the B surface are provided with a plurality of coolant water channels, each of the coolant water channel openings is fixedly installed with a water channel sealing cover, the motor stator A surface is provided with a water outlet and a water inlet, and water pipe adapter joints are fixedly installed in the water outlet and the water inlet.

[0007] As a further technical solution of the utility model, side end covers and disc brake end covers are provided at both ends of the motor shaft, and a wheel hub is fixedly installed between the side end cover and the disc brake end cover.

[0008] As a further technical solution of the utility model, a bearing is embedded on one side of the side end cover, and two bearings are embedded on one side of the disc brake end cover. The side end cover is rotatably sleeved on the surface of the motor stator through the bearing, and the disc brake end cover is rotatably sleeved on the surface of the motor shaft through two bearings.

[0009] As a further technical solution of the utility model, a silicon steel sheet with an annular structure is embedded on the surface of the motor stator, and a pressure plate is fixedly installed on the bottom of the motor stator by bolts, and the top of the pressure plate is against the bottom of the silicon steel sheet.

[0010] As a further technical solution of the utility model, a motor wire outlet hole is opened on the top of the motor stator.

[0011] The beneficial effects of the utility model are:

[0012] By setting up multiple coolant water channels on both sides of the motor stator, the coolant flows into the water inlet, enters the No. 1 water channel, then enters the No. 2 water channel, and so on, and is finally discharged from the water outlet to the external equipment. The coolant circulates inside the motor stator to bring out the internal heat, and can also release the heat through the external heat sink or water tank circulation and then circulate back into the motor, thereby improving the heat dissipation effect of the equipment. At the same time, it can avoid the loss of coolant due to damage of the cooling water pipe, thereby improving the practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a cross-sectional structural schematic diagram of a water-cooling structure of an outer rotor hub motor proposed by the utility model;

[0014] Figure 2 This is a schematic diagram of the A-side structure of a water-cooling structure of an outer rotor hub motor proposed by the utility model;

[0015] Figure 3 This is a schematic diagram of the B-side structure of a water-cooling structure of an outer rotor hub motor proposed in the utility model.

[0016] In the figure: 1. Motor shaft; 2. Water pipe adapter; 3. Water outlet; 4. Water inlet; 5. Side end cover; 6. Water channel sealing cover; 7. Wheel hub; 8. Disc brake end cover; 9. Bearing; 10. Pressure plate; 11. Silicon steel sheet; 12. Motor wire outlet hole; 13. Motor stator. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Please refer to the attached Figure 1 -Attached Figure 3 A water-cooling structure of an outer rotor hub motor includes a motor shaft 1, a motor stator 13 is fixedly sleeved on the surface of the motor shaft 1, the motor stator 13 is provided with an A surface and a B surface, and a plurality of coolant water channels are opened on the A surface and the B surface, and a water channel sealing cover 6 is fixedly installed on each open coolant water channel, and a water outlet 3 and a water inlet 4 are opened on the A surface of the motor stator 13, and a water pipe adapter joint 2 is fixedly installed in the water outlet 3 and the water inlet 4.

[0021] When in use, multiple coolant water channels are set on both sides of the motor stator, and the coolant water channels on the A side are marked as No. Ⅰ water channel, No. Ⅲ water channel, No. Ⅴ water channel..., and the coolant water channels on the B side are marked as No. Ⅱ water channel, No. Ⅳ water channel, No. Ⅵ water channel... The coolant flows in from the water inlet 4, enters the No. Ⅰ water channel, and then enters the No. Ⅱ water channel, and so on, and is finally discharged from the water outlet 3 to the external equipment. The coolant circulates inside the motor stator 13 to bring out the internal heat, and can also release the heat through the external heat sink or water tank circulation and then circulate back to the motor, thereby improving the heat dissipation effect of the equipment. At the same time, it can avoid the loss of coolant due to damage of the cooling water pipe, thereby improving the practicality of the equipment.

[0022] In this embodiment, side end covers 5 and disc brake end covers 8 are provided at both ends of the motor shaft 1, and a wheel hub 7 is fixedly installed between the side end cover 5 and the disc brake end cover 8. A bearing 9 is embedded on one side of the side end cover 5, and two bearings 9 are embedded on one side of the disc brake end cover 8. The side end cover 5 is rotatably sleeved on the surface of the motor stator 13 through the bearing 9, and the disc brake end cover 8 is rotatably sleeved on the surface of the motor shaft 1 through the two bearings 9. A silicon steel sheet 11 with an annular structure is embedded on the surface of the motor stator 13, and a pressure plate 10 is fixedly installed on the bottom of the motor stator 13 by bolts. The top of the pressure plate 10 is against the bottom of the silicon steel sheet 11, and a motor outlet hole 12 is opened at the top of the motor stator 13.

[0023] When in use, the side end cover 5 and the disc brake end cover 8 are used to close the two ends of the motor shaft 1 to protect the internal components from being damaged by external objects and the environment. The silicon steel sheet 11 is placed on the inner side of the wheel hub 7 and can be used to improve the electromagnetic performance of the motor. The bearing 9 is used to support and fix the side end cover 5 and the disc brake end cover 8 so that they can rotate smoothly. The motor wire outlet hole 12 is used to lead out the output wire of the motor and connect it to the external circuit.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An outer rotor hub motor water cooling structure, comprising a motor shaft (1), characterized in that: The motor stator (13) is fixedly sleeved on the surface of the motor shaft (1), and the motor stator (13) is provided with an A surface and a B surface, and the A surface and the B surface are both provided with a plurality of cooling liquid water channels, and each of the cooling liquid water channel openings is fixedly installed with a water channel sealing cover (6), and the A surface of the motor stator (13) is provided with a water outlet (3) and a water inlet (4), and a water pipe adapter joint (2) is fixedly installed in each of the water outlet (3) and the water inlet (4).

2. The outer rotor hub motor water cooling structure according to claim 1, characterized in that: The two ends of the motor shaft (1) are provided with side end covers (5) and disc brake end covers (8), and a wheel hub (7) is fixedly installed between the side end cover (5) and the disc brake end cover (8).

3. The outer rotor hub motor water cooling structure according to claim 2, characterized in that: A bearing (9) is embedded on one side of the side end cover (5), and two bearings (9) are embedded on one side of the disc brake end cover (8). The side end cover (5) is rotatably sleeved on the surface of the motor stator (13) through the bearing (9), and the disc brake end cover (8) is rotatably sleeved on the surface of the motor shaft (1) through the two bearings (9).

4. The outer rotor hub motor water cooling structure according to claim 1, characterized in that: A silicon steel sheet (11) with an annular structure is embedded on the surface of the motor stator (13), and a pressure plate (10) is fixedly installed on the bottom of the motor stator (13) by bolts, and the top of the pressure plate (10) abuts against the bottom of the silicon steel sheet (11).

5. The outer rotor hub motor water cooling structure according to claim 4, characterized in that: A motor wire outlet hole (12) is provided on the top of the motor stator (13).

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