High-power-density robot joint motor based on phase change heat dissipation

Abstract

The utility model provides a high power density robot joint motor based on phase change heat dissipation, which comprises a base, a rotor assembly, a stator assembly, a motor end cover and a phase change heat dissipation structure, and is characterized in that the stator assembly comprises a stator iron core and a stator winding wound on the stator iron core; the phase change heat dissipation structure is connected between the stator winding and the motor end cover, and the phase change heat dissipation structure is used for transmitting heat of the stator winding to the motor end cover and dissipating the heat to the outside. According to the utility model, the phase change heat dissipation structure is arranged between the stator winding and the motor end cover, heat dissipation and uniform heat distribution of the stator winding of the robot joint motor can be enhanced, and the motor end cover is used as a heat dissipation plate to increase the heat exchange area and enhance the heat dissipation efficiency. The heat pipe is simple in structure and low in cost, and meets the requirements of light weight and miniaturization of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of robot joint motors, in particular to a high-power density robot joint motor based on phase change heat dissipation. Background Art

[0002] Robot joint motors have technical requirements of high power density, light weight, and miniaturization. However, high power density also means that the motor will generate more heat during operation. Lightweight and miniaturization mean compact structure and limited installation space for heat dissipation structure, which brings great challenges to heat dissipation design. Achieving efficient heat dissipation in a limited space is a difficulty of current technology.

[0003] The temperature rise of the motor winding is the most critical performance indicator of the motor temperature rise. Therefore, in order to deal with the problem of high temperature rise of the motor winding, it is necessary to propose a solution that can improve the heat dissipation performance of the joint motor to meet the needs of high-power humanoid robots. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the utility model is to provide a high power density robot joint motor based on phase change heat dissipation.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve its technical problems is: a high-power density robot joint motor based on phase change heat dissipation, including a base, a rotor assembly, a stator assembly, a motor end cover and a phase change heat dissipation structure, the stator assembly includes a stator core and a stator winding wound on the stator core, the phase change heat dissipation structure is connected between the stator winding and the motor end cover, and the phase change heat dissipation structure is used to transfer the heat of the stator winding to the motor end cover and dissipate it to the outside.

[0006] In the utility model, a phase change heat dissipation structure is arranged between the stator winding and the motor end cover, which can enhance the heat dissipation of the stator winding of the robot joint motor and evenly distribute heat. The motor end cover acts as a heat dissipation plate to increase the heat exchange area and enhance the heat dissipation efficiency.

[0007] Furthermore, the phase change heat dissipation structure is a heat pipe, which includes a cooling section, an intermediate section and an evaporation section. The evaporation section is embedded in the slot space inside the stator winding, and the cooling section is embedded in the fixed slot of the motor end cover.

[0008] The above preferred solution has a simple structure and low cost, and meets the requirements of lightweight and miniaturized motors.

[0009] Furthermore, the gap between the stator winding and the evaporation section is filled with heat-conducting glue, and the gap between the cooling section and the motor end cover fixing groove is filled with heat-conducting glue.

[0010] By adopting the above preferred solution, the heat transfer efficiency at the connection between the evaporation section of the heat pipe and the stator winding, and at the connection between the cooling section of the heat pipe and the motor end cover is improved.

[0011] Furthermore, the length of the evaporation section is 98%-102% of the length of the stator core.

[0012] Furthermore, the diameter of the heat pipe is 95%-100% of the maximum inscribed circle diameter of the inner slot space of the stator winding.

[0013] By adopting the above preferred solution, the contact degree between the heat pipe and the stator winding is improved.

[0014] Furthermore, the length of the cooling section of the heat pipe is greater than 15% of the total length of the heat pipe.

[0015] By adopting the above preferred solution, the length of the cooling section of the heat pipe is ensured to ensure that the heat is dissipated through the motor end cover in time.

[0016] Furthermore, the thickness of the motor end cover is not less than 20 mm.

[0017] Furthermore, a water flow channel is provided in the motor end cover, and a water inlet and a water outlet connected to the water flow channel are provided on the motor end cover.

[0018] Furthermore, a cooling water circulation supply device is externally connected between the water inlet and the water outlet of the motor end cover.

[0019] By adopting the above preferred solution, the motor end cover is used as a water cooling plate to enhance the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of an implementation method of the utility model.

[0022] Figure 2 It is a structural schematic diagram of the motor end cover of the utility model.

[0023] Figure 3 It is a cross-sectional schematic diagram of the stator assembly of the utility model.

[0024] Figure 4 It is a structural schematic diagram of the heat pipe of the utility model.

[0025] The numbers and letters in the figure represent the names of the corresponding parts:

[0026] 11-base; 12-rotor assembly; 13-stator assembly; 131-stator winding; 14-motor end cover; 141-fixing groove; 142-water inlet; 143-water outlet; 15-heat pipe; 151-evaporation section; 152-middle section; 153-cooling section. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1-4 As shown, one embodiment of the utility model is: a high power density robot joint motor based on phase change heat dissipation, including a base 11, a rotor assembly 12, a stator assembly 13, a motor end cover 14 and a phase change heat dissipation structure, the stator assembly 13 includes a stator core and a stator winding 131 wound on the stator core, the phase change heat dissipation structure is connected between the stator winding 131 and the motor end cover 14, and the phase change heat dissipation structure is used to transfer the heat of the stator winding 131 to the motor end cover 14 and dissipate it to the outside.

[0029] The beneficial effect of adopting the above technical solution is: a phase change heat dissipation structure is set between the stator winding and the motor end cover, which can enhance the heat dissipation of the stator winding of the robot joint motor and evenly distribute heat. The motor end cover acts as a heat sink to increase the heat exchange area and enhance the heat dissipation efficiency.

[0030] like Figure 1-4 As shown, in some other embodiments of the present invention, the phase change heat dissipation structure is a heat pipe 15, and the heat pipe 15 includes a cooling section 153, an intermediate section 152 and an evaporation section 151, the evaporation section 151 is embedded in the inner slot space of the stator winding 13, and the cooling section 153 is embedded in the fixing slot 141 of the motor end cover 14. The beneficial effects of adopting the above technical solution are: simple structure, low cost, and meeting the requirements of lightweight and miniaturization of the motor.

[0031] In other embodiments of the present invention, the gap between the stator winding 13 and the evaporation section 151 is filled with thermally conductive adhesive, and the gap between the cooling section 153 and the motor end cover fixing groove 141 is filled with thermally conductive adhesive. The beneficial effect of adopting the above technical solution is to improve the heat transfer efficiency at the connection between the heat pipe evaporation section and the stator winding, and the heat pipe cooling section and the motor end cover.

[0032] In other embodiments of the present invention, the length of the evaporation section 151 is 98%-102% of the length of the stator core. The diameter of the heat pipe 15 is 95%-100% of the maximum inscribed circle diameter of the inner slot space of the stator winding. The beneficial effect of adopting the above technical solution is: improving the contact degree between the heat pipe and the stator winding.

[0033] In other embodiments of the present invention, the length of the heat pipe cooling section 153 is greater than 15% of the total length of the heat pipe 15. The beneficial effect of adopting the above technical solution is: ensuring the length of the heat pipe cooling section to ensure that the heat is dissipated through the motor end cover in time.

[0034] In some other embodiments of the utility model, the thickness of the motor end cover 14 is not less than 20 mm. A water flow channel is provided in the motor end cover 14, and a water inlet 142 and a water outlet 143 connected to the water flow channel are provided on the motor end cover 14. A cooling water circulation supply device is externally connected between the water inlet 142 and the water outlet 143 of the motor end cover 14. The beneficial effect of adopting the above technical solution is: using the motor end cover as a water cooling plate to enhance the heat exchange efficiency.

[0035] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable ordinary technicians in the field to understand the content of the utility model and implement it. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A high power density robot joint motor based on phase change heat dissipation, characterized in that: It includes a base, a rotor assembly, a stator assembly, a motor end cover and a phase change heat dissipation structure. The stator assembly includes a stator core and a stator winding wound on the stator core. The phase change heat dissipation structure is connected between the stator winding and the motor end cover. The phase change heat dissipation structure is used to transfer the heat of the stator winding to the motor end cover and dissipate it to the outside.

2. The high power density robot joint motor based on phase change heat dissipation according to claim 1 is characterized in that: The phase-change heat dissipation structure is a heat pipe, which includes a cooling section, an intermediate section and an evaporation section. The evaporation section is embedded in the inner slot space of the stator winding, and the cooling section is embedded in the fixed slot of the motor end cover.

3. The high power density robot joint motor based on phase change heat dissipation according to claim 2 is characterized in that: The gap between the stator winding and the evaporation section is filled with heat-conducting glue, and the gap between the cooling section and the motor end cover fixing groove is filled with heat-conducting glue.

4. The high power density robot joint motor based on phase change heat dissipation according to claim 2 is characterized in that: The length of the evaporation section is 98%-102% of the length of the stator core.

5. The high power density robot joint motor based on phase change heat dissipation according to claim 2 is characterized in that: The diameter of the heat pipe is 95%-100% of the maximum inscribed circle diameter of the inner slot space of the stator winding.

6. The high power density robot joint motor based on phase change heat dissipation according to claim 2 is characterized in that: The length of the cooling section of the heat pipe is greater than 15% of the total length of the heat pipe.

7. The high power density robot joint motor based on phase change heat dissipation according to claim 6 is characterized in that: The thickness of the motor end cover shall not be less than 20mm.

8. The high power density robot joint motor based on phase change heat dissipation according to claim 6 is characterized in that: A water flow channel is arranged in the motor end cover, and a water inlet and a water outlet which are connected with the water flow channel are arranged on the motor end cover.

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