Motor and electric device

Abstract

The utility model discloses a motor and an electric device, the motor comprises a rotor assembly and a stator assembly, the rotor assembly is provided with a first sensor group, and the first sensor group is configured to detect first working information of the rotor assembly; the stator assembly is provided with a second sensor group, and the second sensor group is configured to detect second working information of the stator assembly. According to the motor, motor operation can be monitored in real time, the monitoring precision is improved, early warning and control can be performed in time on the conditions of motor performance reduction or abnormal work and the like, and the working performance and safety of the motor can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor measurement and control, in particular to a motor and an electrical device. Background Art

[0002] With the rapid development of the new energy vehicle industry, people have increasingly stringent safety requirements for electric vehicles. The motor, as the power source of electric vehicles, is directly related to driving safety, and therefore has even higher safety requirements. To ensure the stable and safe operation of the motor, monitoring the motor's operating status has become particularly important. Motor operating status monitoring mainly includes monitoring information such as insulation resistance, current, torque, and temperature. Currently, this information is detected by independently configured corresponding sensors.

[0003] In related technologies, independent sensors are set for the motors, but the detection accuracy is low. In addition, since the motor rotor rotates in real time when the car is running, the rotor temperature and torque of the motor cannot be measured in real time, resulting in the inability to accurately monitor the insulation resistance, current, torque, temperature and other information of the motor. Real-time monitoring and early warning are not possible, which can easily cause the motor performance to degrade or even burn out directly, seriously affecting the safety, operating efficiency and stability of the vehicle. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a motor that can monitor motor operation in real time with improved monitoring accuracy, provide timely warnings and control of motor performance degradation or abnormal operation, and thus improve motor performance and safety.

[0005] The utility model also provides an electrical device having the motor.

[0006] According to the motor of the embodiment of the first aspect of the present utility model, the motor includes: a rotor assembly and a stator assembly, the rotor assembly is provided with a first sensor group, the first sensor group is configured to detect first working information of the rotor assembly; the stator assembly is provided with a second sensor group, the second sensor group is configured to detect second working information of the stator assembly.

[0007] According to the motor of the present invention, the working information of the rotor assembly and the stator assembly can be detected by the first sensor group and the second sensor group, so that the motor operation can be monitored in real time with high monitoring accuracy, and timely warning and control of motor performance degradation or abnormal operation can be carried out, thereby improving the motor's working performance, and increasing the motor's life and safety.

[0008] According to some embodiments of the present invention, the first sensor group includes at least a first temperature sensor and a torque sensor, so as to collect at least first temperature information and torque information of the rotor assembly.

[0009] Furthermore, the rotor assembly includes: a rotor core and a rotor shaft, the rotor shaft is constructed as a hollow shaft, the torque sensor is arranged in the rotor shaft, and the first temperature sensor is arranged on the rotor core.

[0010] In some embodiments, the second sensor group includes at least a speed sensor, a current sensor, and a second temperature sensor, so as to collect at least rotational speed information, current information, and second temperature information of the stator assembly.

[0011] According to some embodiments of the present invention, the stator assembly includes: a stator core, and the second sensor group is arranged on the stator core.

[0012] In some embodiments, the motor further includes: a power supply module, wherein the power supply module is adapted to supply power to the first sensor group.

[0013] Furthermore, the power supply module includes: an excitation part and a power generation part, the excitation part is arranged in the stator assembly, and the power generation part is arranged in the rotor shaft of the rotor assembly; wherein the excitation part and the power generation part are magnetically coupled to supply power to the first sensor group through the power generation part.

[0014] According to some embodiments of the present invention, the motor further includes: a first transmitting unit and a second transmitting unit, the first transmitting unit being connected to the first sensor group signal, the second transmitting unit being connected to the second sensor group signal, and being adapted to respectively send out the first working information and the second working information.

[0015] Furthermore, the first transmitting unit and the second transmitting unit are both constructed as wireless transmission units, and interact with the controller signal of the motor.

[0016] According to the electric device of the second embodiment of the present invention, the electric device includes: the motor described in any one of the above embodiments.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a schematic diagram of the coordination of the internal components of a motor according to some embodiments of the present utility model.

[0020] Reference numerals:

[0021] Motor 1;

[0022] Rotor assembly 11;

[0023] Rotor core 111, rotor shaft 112, accommodating cavity 112a;

[0024] stator assembly 12;

[0025] First temperature sensor 131, torque sensor 132, wiring harness 133;

[0026] Speed ​​sensor 141, current sensor 142, second temperature sensor 143;

[0027] Excitation unit 151, power generation unit 152;

[0028] First transmitting unit 16 , controller 17 , rotor acquisition system 18 , stator acquisition system 19 . DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] Reference below Figure 1 The following describes a motor 1 and an electrical device according to an embodiment of the present invention.

[0031] According to the motor 1 of the first embodiment of the present invention, the motor 1 includes a rotor assembly 11 and a stator assembly 12 .

[0032] The rotor assembly 11 is provided with a first sensor group configured to detect first working information of the rotor assembly 11 ; the stator assembly 12 is provided with a second sensor group configured to detect second working information of the stator assembly 12 .

[0033] Specifically, when the stator assembly 12 is energized, the rotor assembly 11 can rotate under the interaction of the magnetic fields of the stator assembly 12 and the rotor assembly 11 to achieve normal output of the motor 1. A first sensor group can be provided on the rotor assembly 11, and the first sensor group can be used to detect the first working information of the rotor assembly 11 in real time and feed back the first working information. A second sensor group can be provided on the stator assembly 12, and the second sensor group can be used to detect the second working information of the stator assembly 12 in real time and feed back the second working information, so that the operating status of the motor 1 can be detected in real time through the first sensor group and the second sensor group.

[0034] According to the motor 1 of the present invention, the working information of the rotor assembly 11 and the stator assembly 12 can be detected by the first sensor group and the second sensor group, so that the operation of the motor 1 can be monitored in real time with high monitoring accuracy, and timely warning and control of performance degradation or abnormal operation of the motor 1 can be carried out, thereby improving the working performance of the motor 1 and increasing the life and safety of the motor 1.

[0035] According to some embodiments of the present invention, the first sensor group includes at least a first temperature sensor 131 and a torque sensor 132 to collect at least first temperature information and torque information of the rotor assembly 11 .

[0036] Specifically, the first sensor group may include multiple sensors, at least one of the multiple sensors is a first temperature sensor 131, the first temperature sensor 131 can collect first temperature information of the rotor assembly 11 and feed back the first temperature information, so as to realize real-time monitoring and measurement of the temperature of the rotor assembly 11, which can help detect whether the motor 1 is overheating, prevent damage or failure of the motor 1, and ensure the efficient operation and safety of the motor 1; at least another one of the multiple sensors is a torque sensor 132, the torque sensor 132 can collect torque information of the rotor assembly 11, and feed back the torque information, so as to realize real-time monitoring of the torque of the motor 1 during operation, monitor the load and operating status of the motor 1, help detect whether the motor 1 is operating normally or has a fault, and thus improve the efficiency and reliability of the motor 1.

[0037] It should be pointed out that the first sensor group may include but is not limited to only the first temperature sensor 131 and the torque sensor 132. For example, the first sensor group may also include a force sensor and a position sensor, etc., so as to measure the force or torque applied to the rotor assembly 11, detect the position of the rotor assembly 11, etc.

[0038] According to some embodiments of the present invention, the rotor assembly 11 includes a rotor core 111 and a rotor shaft 112 .

[0039] The rotor shaft 112 is configured as a hollow shaft, the torque sensor 132 is disposed in the rotor shaft 112 , and the first temperature sensor 131 is disposed on the rotor core 111 .

[0040] Specifically, the rotor core 111 can be sleeved on the outer periphery of the rotor shaft 112, the rotor shaft 112 can be constructed as a hollow shaft, and an accommodating cavity 112a is formed in the rotor shaft 112. The torque sensor 132 can be accommodated in the accommodating cavity 112a, and the first temperature sensor 131 can be arranged on the rotor core 111. In this way, the measurement accuracy of the torque sensor 132 and the first temperature sensor 131 can be improved, the torque sensor 132 can be prevented from being interfered with by the magnetic field, the real-time monitoring accuracy of the torque and temperature of the motor 1 can be improved, and the normal operation and safety of the motor 1 can be further guaranteed; on the other hand, the method of arranging the torque sensor 132 in the rotor shaft 112 can also improve the compactness of the structure of the motor 1, improve the space utilization, and optimize the volume of the motor 1.

[0041] According to some embodiments of the present invention, the second sensor group includes at least a speed sensor 141 , a current sensor 142 and a second temperature sensor 143 to collect at least speed information, current information and second temperature information of the stator assembly 12 .

[0042] Specifically, the second sensor group may include multiple sensors, at least one of which is a speed sensor 141. The speed sensor 141 can collect the rotational speed information of the stator assembly 12 and feed back the rotational speed information, thereby realizing real-time monitoring and measurement of the rotational speed of the motor 1, and can monitor abnormal rotational speed during the operation of the motor 1, issue early warnings and take corresponding protective measures to avoid damage to the motor 1 or the occurrence of dangerous accidents; at least another one of the multiple sensors is a current sensor 142. The current sensor 142 can collect the current information of the stator assembly 12 and feed back the current information, thereby realizing real-time monitoring of the current during the operation of the motor 1, and can timely warn and control overcurrent and load abnormalities, thereby improving the working performance and safety of the motor 1; at least one of the multiple sensors is a second temperature sensor 143. Similarly, the second temperature sensor 143 can collect the second temperature information of the stator assembly 12 and feed back the second temperature information, thereby realizing real-time monitoring and measurement of the temperature of the motor 1, which can help detect whether the motor 1 is overheating, prevent damage or failure of the motor 1, and ensure the efficient operation and safety of the motor 1.

[0043] It should be noted that the second sensor group may include but is not limited to only a speed sensor 141, a current sensor 142 and a second temperature sensor 143. For example, the second sensor group may also include a vibration sensor and a pressure sensor, etc., to measure the vibration and pressure conditions of the stator assembly 12.

[0044] According to some embodiments of the present invention, the stator assembly 12 includes a stator core, and the second sensor group is disposed on the stator core.

[0045] Specifically, a mounting area can be formed on the stator core, and the second sensor group can be disposed in the mounting area on the stator core. The mounting area can be in the form of a groove or the like to provide mounting space for the second sensor group. By disposing the second sensor group in the stator core, on the one hand, since the stator core is the structural center of the motor 1 and has high stability and rigidity, the second sensor group disposed thereon can obtain more stable and accurate signals, thereby providing more reliable monitoring results. On the other hand, by disposing the second sensor group in the stator core, the second sensor group can quickly detect the speed, current, temperature, and other parameters of the stator core, and provide timely feedback and control, which helps to improve the operating efficiency and performance of the motor 1.

[0046] According to some embodiments of the present invention, the motor 1 further includes: a power supply module, which is suitable for supplying power to the first sensor group.

[0047] Specifically, the power supply module can be arranged in the rotor assembly 11 or the stator assembly 12. The power supply module can be electrically connected to the power supply and convert the voltage and current of the power supply into the power supply specifications required by the first sensor group, so that the power supply module can provide the required power for the first sensor group to drive and ensure the normal operation of the first sensor group, thereby effectively ensuring the real-time detection of the first working information of the rotor assembly 11.

[0048] According to some embodiments of the present invention, the power supply module includes an excitation unit 151 and a power generation unit 152 .

[0049] The excitation part 151 is provided in the stator assembly 12 , and the power generation part 152 is provided in the rotor shaft 112 of the rotor assembly 11 . The excitation part 151 and the power generation part 152 are magnetically coupled to supply power to the first sensor group through the power generation part 152 .

[0050] Specifically, the excitation unit 151 can be electrically connected to a power source and generate a magnetic field. The power generation unit 152 can be magnetically coupled to the excitation unit 151. Through the interaction of the magnetic fields between the power generation unit 152 and the excitation unit 151, current can be generated, thereby providing the required power for the first sensor group. The power generation unit 152 is disposed within the rotor shaft 112 of the rotor assembly 11, further improving the integration of the first sensor group and the rotor assembly 11, further improving space utilization, and optimizing the volume of the motor 1.

[0051] According to some embodiments of the present invention, the motor 1 further includes: a first transmitting unit 16 and a second transmitting unit.

[0052] The first transmitting unit 16 is signal-connected to the first sensor group, and the second transmitting unit is signal-connected to the second sensor group, and is adapted to send out first working information and second working information respectively.

[0053] Specifically, the first transmitting unit 16 can be disposed within the rotor shaft 112 of the rotor assembly 11. The first transmitting unit 16 can receive first operating information, such as temperature and torque, collected by the first sensor group and transmit the first operating information. The second transmitting unit can be disposed in the stator assembly 12. The second transmitting unit can receive second operating information, such as speed, current, and temperature, collected by the second sensor group and transmit the second operating information. By providing the first transmitting unit 16 and the second transmitting unit, the first operating information and the second operating information can be transmitted to a cloud platform or a monitoring system, ensuring real-time monitoring of operating parameters such as the internal temperature, torque, current, and speed of the motor 1, and conducting analysis and management, thereby providing timely warnings and control, thereby improving the operating performance and safety of the motor 1.

[0054] In addition, in some specific embodiments of the present invention, a rotor acquisition system 18 for collecting the first working information collected by the first sensor group is provided in the rotor shaft 112, and the rotor acquisition system 18 is signal-connected to the first transmitting unit 16; the rotor shaft 112 is formed with a first channel extending radially, and the outlet of the first channel is connected to the accommodating cavity 112a, and the rotor core 111 is formed with a second channel extending radially, and the outlet of the second channel is connected to the inlet of the first channel, and at least part of the first sensor group (for example, a first temperature sensor 131 can be provided) is provided at the inlet of the second channel; wherein the first channel and the second channel are used to accommodate a wiring harness 133 of at least part of the first sensor group, one end of the wiring harness 133 is connected to at least part of the first sensor group, and the other end is connected to the rotor acquisition system 18, so as to realize the connection between the rotor acquisition system 18 and at least part of the first sensor group, so as to ensure real-time feedback of the first working information collected by the first sensor group.

[0055] It should be noted that the manner of accommodating the wiring harness 133 in the first channel and the second channel in the above embodiment can avoid magnetic field interference and further improve the measurement accuracy of the first sensor group.

[0056] In other specific embodiments of the present invention, the stator assembly 12 is provided with a stator acquisition system 19, which is used to collect the second working information collected by the second sensor group, and the stator acquisition system 19 is connected to the second transmitting unit signal to ensure real-time feedback of the second working information collected by the second sensor group.

[0057] According to some embodiments of the present invention, the first transmitting unit 16 and the second transmitting unit are both configured as wireless transmission units, and exchange signals with the controller 17 of the motor 1 .

[0058] Specifically, the controller 17 of the motor 1 can interact with the first transmitting unit 16 and the second transmitting unit signals. The first transmitting unit 16 and the second transmitting unit can feed back the first working information and the second working information to the controller 17. The controller 17 can integrate the first working information and the second working information and perform management analysis. In this way, real-time monitoring and adjustment of the operation of the motor 1 can be achieved, and the performance and efficiency of the motor 1 can be fully improved. The first transmitting unit 16 and the second transmitting unit are both constructed as wireless transmission units, so that the first sensor combination and the second sensor group can feed back the first working information and the second working information to the controller 17 through wireless signals without using a wired connection, eliminating the need for wiring and reducing physical connections, thereby providing greater flexibility and convenience for the arrangement of the first sensor group, the second sensor group, the first transmitting unit 16 and the second transmitting unit.

[0059] Preferably, according to the motor 1 of some embodiments of the present invention, a torque sensor 132 is provided on the rotor core 111 of the rotor assembly 11, and a first temperature sensor 131, a rotor acquisition system 18, a first transmitting unit 16 and a power generation unit 152 are provided in the rotor shaft 112, so as to effectively improve the integration of the rotor assembly 11 and the first sensor group on the basis of realizing real-time monitoring of the torque and temperature of the motor 1; a speed sensor 141, a current sensor 142, a second temperature sensor 143, a stator acquisition system 19, a controller 17 and an excitation unit 151 are provided on the stator core of the stator assembly 12, so as to realize real-time monitoring and early warning of parameters such as the speed and current of the motor 1 during operation, thereby improving the working performance and safety of the motor 1.

[0060] According to the electric device of the second embodiment of the present invention, the electric device includes: the motor 1 described in any one of the above embodiments, and the technical effects produced are consistent with those in the above embodiments, which will not be repeated here.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0062] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0063] In the description of the present invention, “plurality” means two or more.

[0064] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0065] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0066] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0067] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: include: A rotor assembly (11), wherein a first sensor group is arranged on the rotor assembly (11), and the first sensor group is configured to detect first working information of the rotor assembly (11); A stator component (12), wherein a second sensor group is arranged on the stator component (12), and the second sensor group is configured to detect second working information of the stator component (12).

2. The motor according to claim 1, characterized in that The first sensor group comprises at least a first temperature sensor (131) and a torque sensor (132), so as to collect at least first temperature information and torque information of the rotor assembly (11).

3. The motor according to claim 2, characterized in that The rotor assembly (11) comprises: a rotor core (111) and a rotor shaft (112); the rotor shaft (112) is configured as a hollow shaft, the torque sensor (132) is arranged in the rotor shaft (112), and the first temperature sensor (131) is arranged on the rotor core (111).

4. The motor according to claim 1, characterized in that The second sensor group comprises at least: a speed sensor (141), a current sensor (142) and a second temperature sensor (143), so as to collect at least rotation speed information, current information and second temperature information of the stator assembly (12).

5. The motor according to claim 1, characterized in that The stator assembly (12) comprises a stator core, and the second sensor group is arranged on the stator core.

6. The motor according to claim 1, characterized in that Also includes: A power supply module, wherein the power supply module is adapted to supply power to the first sensor group.

7. The motor according to claim 6, characterized in that The power supply module comprises: an excitation part (151) and a power generation part (152), wherein the excitation part (151) is arranged in the stator assembly (12), and the power generation part (152) is arranged in the rotor shaft (112) of the rotor assembly (11); The excitation part (151) is magnetically coupled to the power generation part (152) so as to supply power to the first sensor group through the power generation part (152).

8. The motor according to claim 1, characterized in that Also includes: A first transmitting unit (16) and a second transmitting unit, wherein the first transmitting unit (16) is connected to the first sensor group signal, and the second transmitting unit is connected to the second sensor group signal, and is suitable for sending the first working information and the second working information respectively.

9. The motor according to claim 8, characterized in that The first transmitting unit (16) and the second transmitting unit are both constructed as wireless transmission units and interact with the controller (17) of the motor through signals.

10. An electrical device, characterized in that: include: A motor as claimed in any one of claims 1 to 9.

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