Motor for detecting temperature of stator winding

Abstract

The utility model relates to the technical field of motor temperature detection, and particularly discloses a motor for detecting the temperature of a stator winding, which comprises a motor shell, a stator assembly, a rotor assembly, a temperature detector, a module connector and an encoder assembly. According to the motor for detecting the temperature of the stator winding, the temperature detector is connected with the stator winding, the input end of the module connector is electrically connected with the temperature detector, and the encoder assembly is electrically connected with the output end of the module connector. The temperature detector and the encoder assembly can be directly connected, the temperature of the stator winding can be accurately detected, and a wiring mode of a temperature sensor in the prior art is avoided. The motor for detecting the temperature of the stator winding effectively solves the problem that the temperature measurement of the stator winding is inaccurate due to the fact that the wiring position of a temperature sensor in the prior art is uncertain.

Description

Technical Field

[0001] The utility model relates to the technical field of motor temperature detection, in particular to a motor for detecting the temperature of a stator winding. Background Art

[0002] The temperature of the motor has a crucial impact on the operation of the motor. If the temperature rise of the motor is too high, it will cause accelerated aging of the insulation and affect the service life. In order to ensure the reliable operation of the motor, it is necessary to detect the temperature of the motor's stator winding. The method of detecting the temperature of the motor stator winding in the existing technology is usually to use a temperature sensor for measurement. The temperature sensor needs to be led out from the stator assembly and fixed on the rear end cover, and then connected to the encoder assembly. However, the wiring position of the temperature sensor in this way is uncertain, resulting in the inability to accurately detect the temperature of the motor stator winding; and the corresponding production process needs to be added during the production of the motor, resulting in low motor production efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a motor for detecting the temperature of the stator winding, so as to solve the problem in the prior art that the wiring position of the temperature sensor is uncertain, resulting in inaccurate stator winding temperature measurement.

[0004] In order to solve the above problems, the utility model provides a motor for detecting the temperature of a stator winding. The motor for detecting the temperature of a stator winding includes a motor housing, a stator assembly and a rotor assembly. At least a portion of the rotor assembly is located in a cavity of the motor housing and is rotatably connected to the motor housing. The stator assembly includes a stator core and a stator winding installed on the stator core. The stator core and the stator winding are both located in the cavity of the motor housing and surround the rotor assembly. The motor for detecting the temperature of the stator winding also includes: a temperature detector, which is connected to the stator winding and can detect the temperature of the stator winding; a module connector, which is arranged in the cavity of the motor housing, and the input end of the module connector is electrically connected to the temperature detector; an encoder assembly, which is arranged in the cavity of the motor housing and is electrically connected to the output end of the module connector, and the encoder assembly can receive a temperature signal detected by the temperature detector.

[0005] As an optimal technical solution for detecting the temperature of the stator winding of a motor, the temperature detector is a PCB temperature measuring board. The PCB temperature measuring board is connected to the end face of the stator winding, and the PCB temperature measuring board is plugged into the input end of the module connector. The PCB temperature measuring board can detect the temperature of the stator winding.

[0006] As an optimal technical solution for detecting the stator winding temperature of a motor, the two ends of the module connector respectively have a first pin and a second pin, the PCB temperature measuring board has a first jack, and the encoder assembly has a second jack. The first pin is plugged into the first jack, and the second pin is plugged into the second jack. The module connector can transmit the temperature signal detected by the PCB temperature measuring board to the encoder assembly.

[0007] As an optimal technical solution for detecting the stator winding temperature of a motor, the encoder assembly includes an encoder circuit board and an algorithm module arranged on the encoder circuit board. The encoder circuit board is arranged in the cavity of the motor housing. The encoder circuit board and the output end of the module connector are electrically connected. The algorithm module can calculate the temperature of the stator winding based on the signal input by the encoder circuit board.

[0008] As an optimal technical solution for a motor for detecting the temperature of a stator winding, the motor housing includes a housing body, a rear end cover and a back cover, one end of the rear end cover is connected to the housing body, and the other end of the rear end cover is connected to the back cover, the stator assembly and the temperature detector are both located in the cavity formed by the housing body and the rear end cover, the module connector is installed on the rear end cover, and the encoder assembly is connected to the rear end cover and is located in the cavity formed by the rear end cover and the back cover.

[0009] As an optimal technical solution for detecting the stator winding temperature of a motor, the rear end cover has a mounting hole, which connects the cavity formed by the shell body and the rear end cover and the cavity formed by the rear end cover and the back cover, and the module connector is installed in the mounting hole.

[0010] As a preferred technical solution for the motor for detecting the temperature of the stator winding, the rear end cover has an assembly hole, and the motor for detecting the temperature of the stator winding includes a fastener, which passes through the encoder assembly and is connected to the assembly hole.

[0011] As an optimal technical solution for detecting the temperature of the stator winding of a motor, the stator winding includes a skeleton and an enameled wire installed on the skeleton. The temperature detector is arranged on the skeleton and connected to the enameled wire. The temperature detector can detect the temperature of the enameled wire.

[0012] As an optimal technical solution for a motor for detecting the stator winding temperature, the rotor assembly includes a rotor shaft, a rotor core and a magnet. The rotor core is sleeved on the rotor shaft, the magnet is arranged on the rotor shaft and is located in the cavity of the motor housing, and the rotor shaft is rotatably arranged in the cavity of the motor housing.

[0013] As an optimal technical solution for detecting the stator winding temperature of a motor, the motor for detecting the stator winding temperature includes a first bearing and a second bearing. The first bearing and the second bearing are arranged at intervals in the motor housing and are respectively connected to both ends of the rotor shaft.

[0014] The beneficial effects of the utility model are:

[0015] The present invention provides a motor for detecting the temperature of a stator winding. The motor for detecting the temperature of a stator winding includes a motor housing, a stator assembly, a rotor assembly, a temperature detector, a module connector, and an encoder assembly. When the motor for detecting the temperature of a stator winding is used, the temperature detector is connected to the stator winding, and the input end of the module connector is electrically connected to the temperature detector, and the encoder assembly is electrically connected to the output end of the module connector. With this arrangement, the temperature detector and the encoder assembly can be directly connected through the module connector, which enables accurate detection of the temperature of the stator winding and avoids the need for wiring of the temperature sensor in the prior art. The motor for detecting the temperature of a stator winding of the present invention effectively solves the problem of inaccurate stator winding temperature measurement caused by the uncertain wiring position of the temperature sensor in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of a motor for detecting the temperature of a stator winding in an embodiment of the present utility model;

[0017] Figure 2 This is a cross-sectional view of a motor for detecting stator winding temperature in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic structural diagram of the rear end cover in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic structural diagram of a temperature detector in an embodiment of the present utility model;

[0020] Figure 5 This is a schematic structural diagram of an encoder assembly in an embodiment of the present utility model;

[0021] Figure 6 Schematic diagram of the structure of the module connector in the embodiment of the present utility model.

[0022] In the picture:

[0023] 1. Temperature detector; 11. First jack;

[0024] 2. Module connector; 21. First pin; 22. Second pin;

[0025] 3. Encoder assembly; 31. Second jack; 32. Encoder circuit board; 33. Algorithm module;

[0026] 4. Motor housing; 41. Housing body; 42. Rear end cover; 421. Mounting hole; 422. Assembly hole; 43. Rear cover;

[0027] 5. Stator assembly; 51. Stator core; 52. Stator winding;

[0028] 6. Rotor assembly; 61. Rotor shaft; 62. Rotor core; 63. Magnet; 64. First bearing; 65. Second bearing. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific position, be constructed and operated in a specific position, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] 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.

[0033] like Figures 1 to 6As shown, this embodiment provides a motor for detecting the temperature of a stator winding. The motor for detecting the temperature of a stator winding includes a temperature detector 1, a module connector 2, an encoder assembly 3, a motor housing 4, a stator assembly 5, and a rotor assembly 6. At least a portion of the rotor assembly 6 is located within the cavity of the motor housing 4 and is rotatably connected to the motor housing 4. The stator assembly 5 includes a stator core 51 and a stator winding 52 mounted on the stator core 51. Both the stator core 51 and the stator winding 52 are located within the cavity of the motor housing 4 and surround the rotor assembly 6. The temperature detector 1 is connected to the stator winding 52 and is capable of detecting the temperature of the stator winding 52. The module connector 2 is disposed within the cavity of the motor housing 4, and the input end of the module connector 2 is electrically connected to the temperature detector 1. The encoder assembly 3 is disposed within the cavity of the motor housing 4 and is electrically connected to the output end of the module connector 2. The encoder assembly 3 is capable of receiving the temperature signal detected by the temperature detector 1.

[0034] Using the motor for detecting stator winding temperature of the present invention, a temperature detector 1 is connected to the stator winding 52, and the input end of the module connector 2 is electrically connected to the temperature detector 1, and the encoder assembly 3 is electrically connected to the output end of the module connector 2. With this arrangement, the temperature detector 1 and the encoder assembly 3 can be directly connected through the module connector 2, enabling accurate detection of the temperature of the stator winding 52, avoiding the need for wiring of the temperature sensor in the prior art. The motor for detecting stator winding temperature of the present invention effectively solves the problem of inaccurate stator winding temperature measurement caused by the uncertain wiring position of the temperature sensor in the prior art.

[0035] In some embodiments, the temperature detector 1 is a PCB (printed circuit board) temperature measuring board. The PCB temperature measuring board is connected to the end surface of the stator winding 52, enabling the PCB temperature measuring board to accurately detect the temperature of the stator winding 52. Simultaneously, the PCB temperature measuring board is plugged into the input end of the module connector 2, thereby transmitting the temperature signal detected by the PCB temperature measuring board to the encoder assembly 3 via the module connector 2. This plug-and-play method avoids the need for wiring in the prior art.

[0036] Optionally, the PCB temperature measuring board is annular in shape, matching the shape of the stator winding 52, thereby ensuring the accuracy of the detection. The PCB temperature measuring board has the advantages of high precision, fast response speed and low cost.

[0037] In this embodiment, if Figure 2 、 Figure 4 、 Figure 5 and Figure 6As shown, the module connector 2 has a first pin 21 and a second pin 22 at each end, the PCB temperature measuring board has a first jack 11, and the encoder assembly 3 has a second jack 31. The first pin 21 is plugged into the first jack 11, and the second pin 22 is plugged into the second jack 31. This arrangement enables the module connector 2 to transmit the temperature signal detected by the PCB temperature measuring board to the encoder assembly 3.

[0038] Specifically, if Figure 1 、 Figure 2 and Figure 5 As shown, the encoder assembly 3 includes an encoder circuit board 32 and an algorithm module 33 disposed on the encoder circuit board 32. The encoder circuit board 32 is disposed within the cavity of the motor housing 4 and is electrically connected to the output end of the module connector 2. The algorithm module 33 can calculate the temperature of the stator winding 52 based on the signal input from the encoder circuit board 32, thereby achieving the purpose of detecting the temperature of the stator winding 52.

[0039] Optionally, the encoder assembly 3 further includes an encoder chip and a control chip, and both the encoder chip and the control chip are soldered on the encoder circuit board 32 .

[0040] In some embodiments, the motor housing 4 includes a housing body 41, a rear end cap 42, and a rear cover 43. One end of the rear end cap 42 is connected to the housing body 41, and the other end of the rear end cap 42 is connected to the rear cover 43. The stator assembly 5 and the temperature detector 1 are located within the cavity formed by the housing body 41 and the rear end cap 42. The module connector 2 is mounted on the rear end cap 42. The encoder assembly 3 is connected to the rear end cap 42 and located within the cavity formed by the rear end cap 42 and the rear end cap 43. The rear end cap 42 enables the installation of the module connector 2.

[0041] Specifically, if Figure 1 、 Figure 2 and Figure 3 As shown, the rear cover 42 has a mounting hole 421. The mounting hole 421 connects the cavity formed by the housing body 41 and the rear cover 42 with the cavity formed by the rear cover 42 and the back cover 43. When the module connector 2 is mounted in the mounting hole 421, the first pin 21 is located in the cavity formed by the housing body 41 and the rear cover 42, making it easy to plug into the temperature detector 1. The second pin 22 is located in the cavity formed by the rear cover 42 and the back cover 43, making it easy to plug into the encoder assembly 3.

[0042] In this embodiment, the rear end cover 42 has an assembly hole 422, and the motor for detecting the stator winding temperature includes a fastener, which can be passed through the encoder assembly 3 and connected to the assembly hole 422, thereby achieving the purpose of connecting the rear end cover 42 and the encoder assembly 3.

[0043] Optionally, the fastener is a bolt.

[0044] In some embodiments, the stator winding 52 includes a frame and an enameled wire mounted on the frame. The temperature detector 1 is disposed on the frame and connected to the enameled wire, so that the temperature detector 1 can detect the temperature of the enameled wire.

[0045] Specifically, rotor assembly 6 includes a rotor shaft 61, a rotor core 62, and magnets 63. Rotor core 62 is sleeved onto rotor shaft 61, and magnets 63 are mounted on rotor shaft 61 and positioned within the cavity of motor housing 4. Rotor shaft 61 is rotatably mounted within the cavity of motor housing 4. Magnets 63 are configured to control parameters such as the motor's position, speed, and acceleration by sensing changes in the magnetic field. Magnets 63 sense the magnetic field and convert these changes into digital output signals, thereby achieving precise control of the motor's motion.

[0046] Furthermore, the motor for detecting stator winding temperature includes a first bearing 64 and a second bearing 65. The first bearing 64 and the second bearing 65 are spaced apart within the motor housing 4 and are respectively connected to the ends of the rotor shaft 61. The first bearing 64 and the second bearing 65 can provide support for the ends of the rotor shaft 61 and enable rotational connection with the motor housing 4.

[0047] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A motor for detecting the temperature of a stator winding, comprising a motor housing (4), a stator assembly (5) and a rotor assembly (6), wherein at least a portion of the rotor assembly (6) is located within a cavity of the motor housing (4) and is rotatably connected to the motor housing (4), the stator assembly (5) comprising a stator core (51) and a stator winding (52) mounted on the stator core (51), the stator core (51) and the stator winding (52) both being located within the cavity of the motor housing (4) and surrounding the rotor assembly (6), characterized in that: The motor for detecting the temperature of the stator winding further comprises: a temperature detector (1) connected to the stator winding (52) and capable of detecting the temperature of the stator winding (52); A module connector (2) is arranged in the cavity of the motor housing (4), and an input end of the module connector (2) is electrically connected to the temperature detector (1); An encoder assembly (3) is arranged in the cavity of the motor housing (4) and is electrically connected to the output end of the module connector (2). The encoder assembly (3) is capable of receiving a temperature signal detected by the temperature detector (1).

2. The motor for detecting stator winding temperature according to claim 1, characterized in that: The temperature detector (1) is a PCB temperature measuring board, the PCB temperature measuring board is connected to the end face of the stator winding (52), the PCB temperature measuring board is plugged into and matched with the input end of the module connector (2), and the PCB temperature measuring board can detect the temperature of the stator winding (52).

3. The motor for detecting stator winding temperature according to claim 2, characterized in that: The two ends of the module connector (2) respectively have a first pin (21) and a second pin (22); the PCB temperature measuring board has a first jack (11); the encoder assembly (3) has a second jack (31); the first pin (21) and the first jack (11) are plugged in; the second pin (22) and the second jack (31) are plugged in; the module connector (2) can transmit the temperature signal detected by the PCB temperature measuring board to the encoder assembly (3).

4. The motor for detecting stator winding temperature according to claim 1, characterized in that: The encoder assembly (3) includes an encoder circuit board (32) and an algorithm module (33) arranged on the encoder circuit board (32); the encoder circuit board (32) is arranged in a cavity of the motor housing (4); the encoder circuit board (32) is electrically connected to an output end of the module connector (2); and the algorithm module (33) can calculate the temperature of the stator winding (52) based on a signal input by the encoder circuit board (32).

5. The motor for detecting stator winding temperature according to any one of claims 1 to 4, characterized in that: The motor housing (4) comprises a housing body (41), a rear end cover (42) and a rear cover (43), one end of the rear end cover (42) is connected to the housing body (41), and the other end of the rear end cover (42) is connected to the rear cover (43), the stator assembly (5) and the temperature detector (1) are both located in a cavity formed by the housing body (41) and the rear end cover (42), the module connector (2) is mounted on the rear end cover (42), and the encoder assembly (3) is connected to the rear end cover (42) and is located in a cavity formed by the rear end cover (42) and the rear cover (43).

6. The motor for detecting stator winding temperature according to claim 5, characterized in that: The rear end cover (42) has a mounting hole (421), the mounting hole (421) communicating with a cavity formed by the housing body (41) and the rear end cover (42) and a cavity formed by the rear end cover (42) and the back cover (43), and the module connector (2) is mounted in the mounting hole (421).

7. The motor for detecting stator winding temperature according to claim 5, characterized in that: The rear end cover (42) has an assembly hole (422), and the motor for detecting the temperature of the stator winding includes a fastener, which passes through the encoder assembly (3) and is connected to the assembly hole (422).

8. The motor for detecting stator winding temperature according to claim 1, characterized in that: The stator winding (52) comprises a frame and an enameled wire mounted on the frame. The temperature detector (1) is arranged on the frame and connected to the enameled wire. The temperature detector (1) can detect the temperature of the enameled wire.

9. The motor for detecting stator winding temperature according to claim 1, characterized in that: The rotor assembly (6) comprises a rotor shaft (61), a rotor core (62) and a magnetic steel (63); the rotor core (62) is sleeved on the rotor shaft (61); the magnetic steel (63) is arranged on the rotor shaft (61) and is located in the cavity of the motor housing (4); and the rotor shaft (61) is rotatably arranged in the cavity of the motor housing (4).

10. The motor for detecting stator winding temperature according to claim 9, characterized in that: The motor for detecting the temperature of a stator winding comprises a first bearing (64) and a second bearing (65). The first bearing (64) and the second bearing (65) are arranged in the motor housing (4) at intervals and are respectively connected to both ends of the rotor shaft (61).

Images