High-speed rotating wireless temperature measuring device

Abstract

The utility model relates to a high-speed rotating wireless temperature measuring device, which is coaxially connected with a measured object, and comprises a rotating shaft, a shell, a circuit board assembly, a cover plate and a wireless energy receiving coil, the shell is concentrically arranged on the rotating shaft, the circuit board assembly and the cover plate are concentrically arranged on the shell, and the wireless energy receiving coil is arranged on the rotating shaft. The wireless energy receiving coil is concentrically mounted at the groove in the cover plate; a shell wire passing groove is formed in the shell; the circuit board assembly is electrically connected with the wireless energy receiving coil and a temperature sensor on a measured object. Compared with the prior art, the temperature measuring device has the advantages of being compact in structure, good in dynamic balance performance, capable of achieving real-time and accurate temperature measurement of the high-speed rotating body and the like.

Description

Technical Field

[0001] This utility model relates to the field of temperature measurement technology, and in particular to a high-speed rotating wireless temperature measurement device. Background Technology

[0002] Various signals on rotating bodies are very difficult to test and transmit, especially in extreme environments, such as the temperature signal of the rotor magnets of a permanent magnet synchronous motor. Even with wireless temperature measurement devices, obtaining real-time temperature test results remains a challenge for current technology.

[0003] The number of electric vehicles on the market and their market share in the automotive sector are increasing year by year. Motor technology is constantly innovating, and motor capacity is becoming larger, leading to a corresponding increase in heat generation. Excessive temperature in permanent magnet synchronous motors can damage the insulation layer of the motor windings, reduce the magnetic density of the magnets, and even cause permanent demagnetization. Therefore, real-time monitoring of the rotor temperature of permanent magnet synchronous motors is crucial to ensure their safe and stable operation.

[0004] Therefore, solving the temperature measurement problem on high-speed rotating components, and thus obtaining the temperature of the magnet in real time, has significant reference value for the design of motors and new energy vehicles.

[0005] K-type thermocouples, NCT sensors, or PT1000 sensors are typically used to measure the temperature at relevant locations. However, setting up a high-speed rotating temperature measuring device within a compact space presents a significant challenge for engineering design.

[0006] A search revealed Chinese Utility Model Patent Publication No. CN203643035U, which discloses a rotating mechanism thermocouple measuring device employing wireless power supply and wireless network technology. The device comprises a main shaft 1, an induction power supply coil 2, an induction receiving coil 3, a wireless power supply module 4, a power supply 5, a wireless gateway module 6, a wireless temperature node module 7, an industrial control computer 8, and a K-type thermocouple sensor 9. The wires of the wireless temperature node module 7 and the K-type thermocouple sensor 9 are arranged outside the shaft, and all modules are exposed. This existing patent suffers from problems such as a non-compact arrangement of modules, exposed leads, and poor dynamic balance performance.

[0007] How to achieve real-time wireless temperature measurement in high-speed rotating environments has become a technical problem that needs to be solved. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a high-speed rotating wireless temperature measuring device.

[0009] The objective of this utility model can be achieved through the following technical solutions:

[0010] According to one aspect of the present invention, a high-speed rotating wireless temperature measuring device is provided. The device is coaxially connected to the object being measured. The device includes a rotating shaft, a housing, a circuit board assembly, a cover plate, and a wireless energy receiving coil. The housing is concentrically mounted on the rotating shaft, the circuit board assembly and the cover plate are concentrically mounted on the housing, and the wireless energy receiving coil is concentrically mounted in a groove on the cover plate.

[0011] The housing is provided with a housing wire passage groove;

[0012] The circuit board assembly is electrically connected to the wireless power receiving coil;

[0013] The temperature sensor on the object being measured is electrically connected to the circuit board assembly via a housing and a wire channel.

[0014] Preferably, the rotating shaft is provided with symmetrical shaft guide grooves on both sides.

[0015] More preferably, the device further includes a sensor lead connected to the temperature sensor.

[0016] More preferably, the sensor lead is connected to the circuit board assembly after passing through the shaft wire slot and the housing wire slot from the temperature sensor.

[0017] Preferably, the cover plate is provided with symmetrical cover plate grooves.

[0018] More preferably, the device further includes coil leads connected to the wireless power receiving coil.

[0019] More preferably, the coil lead passes through the cover plate wire slot and the housing wire slot in sequence before being electrically connected to the circuit board assembly.

[0020] Preferably, the housing is provided with a boss in the form of a bushing structure, and housing through grooves are symmetrically arranged on the boss.

[0021] Preferably, the shaft and the housing are joined by an interference fit or by adhesive bonding.

[0022] Preferably, the housing and circuit board assembly, as well as the housing and cover plate, are assembled with a small clearance fit and fixed with adhesive.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1) In this utility model, the housing, circuit board assembly, cover plate, and wireless energy receiving coil are all coaxially mounted directly or indirectly with the rotating shaft, resulting in excellent dynamic balance performance and making it more suitable for high-speed rotation applications; a housing wire passage groove is provided on the housing to complete the arrangement of sensor leads, reducing the probability of interference and breakage of leads due to vibration; the circuit board assembly and wireless energy receiving coil are compactly arranged in the housing and cover plate, enabling wireless power supply and transmission of measurement data, with small size and strong anti-pollution ability, ensuring that the product can be used for long-term real-time and accurate temperature measurement of high-speed rotating bodies.

[0025] 2) The rotating shaft of this utility model is symmetrically provided with shaft wire grooves on both sides for connecting the sensor leads of the temperature sensor located outside the device in a neatly arranged manner.

[0026] 3) The cover plate of this utility model is symmetrically provided with cover plate wire passage grooves, and the coil leads used for wireless power supply are neatly arranged by passing through the cover plate wire passage grooves and the housing wire passage grooves in sequence. Attached Figure Description

[0027] Figure 1 This is a first perspective view of the wireless temperature measuring device of this utility model;

[0028] Figure 2 This is a second perspective view of the wireless temperature measuring device in this utility model;

[0029] Figure 3 This is a side view of the wireless temperature measuring device in this utility model;

[0030] Figure 4 for Figure 3 A sectional view along the B direction;

[0031] Figure 5 This is a three-dimensional schematic diagram of the wire groove for the rotating shaft in this utility model;

[0032] Figure 6(a) is a front view of the shell in this utility model;

[0033] Figure 6(b) is a cross-sectional view along direction A of Figure 6;

[0034] Figure 7(a) is a three-dimensional structural diagram of the cover plate in this utility model;

[0035] Figure 7(b) is a front view of the cover plate in this utility model;

[0036] Figure 7(c) is a cross-sectional view along direction C of Figure 7(b);

[0037] Figure 8 This is a top view of the wireless temperature measuring device of this utility model;

[0038] Figure 9 for Figure 8Sectional view in direction D;

[0039] In the attached diagram: 1: shaft, 11: shaft wire passage, 2: housing, 21: housing wire passage, 3: circuit board assembly, 4: cover plate, 41: cover plate wire passage, 5: wireless energy receiving coil, 100: sensor lead, 101: coil lead. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.

[0041] This invention features a compact mechanical structure that not only allows for the efficient arrangement of functional components and sensor leads, but also incorporates dynamic balancing and other engineering design considerations, making it more suitable for high-speed rotation applications. Furthermore, the inclusion of cover plates and other components, along with processes such as injection molding or glue injection, ensures excellent dynamic balance, strong resistance to contamination, and a long service life for the product.

[0042] This embodiment relates to a high-speed rotating wireless temperature measurement device, which, as shown... Figures 1-4 As shown, it includes a rotating shaft 1, a housing 2, a circuit board assembly 3, a cover plate 4, and a wireless energy receiving coil 5.

[0043] The housing 2 is concentrically mounted on the rotating shaft 1, and is connected by interference fit, adhesive bonding, or by flat key or spline.

[0044] Circuit board assembly 3 is concentrically mounted on housing 2. The two components are fitted with shaft holes, preferably using a small clearance fit. Installation methods such as glue injection, injection molding, or screws are employed to ensure a tight connection. Glue injection or injection molding effectively alleviates dynamic balance issues caused by uneven distribution of electronic components on circuit board assembly 3. Circuit board assembly 3 controls the temperature sensor to perform measurements, processes the results, and transmits them wirelessly to the host computer.

[0045] The cover plate 4 is concentrically mounted on the housing 2. The shaft holes between them are fitted, with a small clearance fit preferred, and they are fixed by adhesive.

[0046] The wireless power receiving coil 5 is concentrically mounted in a groove on the cover plate 4, and is preferably connected and fixed by adhesive. The wireless power receiving coil 5 converts electromagnetic energy into electrical energy, providing a stable, reliable, and interference-free power supply for the circuit board assembly 3, avoiding power instability caused by changes in power supply time or rotation speed in battery-powered or rotary generators.

[0047] The rotating shaft 1, housing 2, circuit board assembly 3, cover plate 4, and wireless energy receiving coil 5 are all circular or annular and concentric with the rotating shaft, making it relatively easy for the wireless temperature measurement device to achieve excellent dynamic balance performance and ensuring that the circuit board assembly 3 can rotate well at high speed.

[0048] Rotary shaft 1 is symmetrically provided with shaft through grooves 11 on both sides, such as Figure 5 The shaft through-slot 11 is used to guide the sensor lead 100 from the temperature measurement point of the rotating body to the circuit board assembly 3. The other end of the sensor lead 100 is connected to the temperature sensor installed on the rotating body. The sensor lead 100 is usually fixed in the shaft through-slot 11 by applying glue.

[0049] The housing 2 is provided with a boss in the form of a bushing structure, and housing through grooves 21 are symmetrically arranged on the boss, such as... Figures 6(a) to 6(b) The sensor lead 100 is used to guide the sensor lead 100 from the measurement point to the circuit board assembly 3. The sensor lead 100 is usually fixed in the wire guide groove 21 of the rotating shaft by applying adhesive.

[0050] The cover plate 4 is symmetrically provided with cover plate wire grooves 41, which are used to guide the coil lead 101 of the wireless energy receiving coil 5 to the circuit board assembly 3, such as... Figures 7(a) to 7(c) The coil lead 101 is usually fixed in the wire groove 41 of the rotating shaft by applying glue.

[0051] like Figure 8 and Figure 9 As shown, sensor lead 100 passes through wire groove 11 along the rotating shaft, enters housing wire groove 21, and then enters circuit board assembly 3 to complete the electrical signal connection. Coil lead 101 passes through cover plate wire groove 41, enters housing wire groove 21, and then enters circuit board assembly 3 to complete the electrical signal connection. Both sensor lead 100 and coil lead 101 are fixed with adhesive.

[0052] Dynamic balancing is a critical step in ensuring the reliability of temperature measurements, especially in high-speed rotation and multi-point measurement scenarios. Poor dynamic balancing performance can interfere with the contact stability of sensors such as thermocouples, lead signal transmission, and data consistency across multiple locations through vibration, significantly reducing the accuracy of rotating body temperature measurements.

[0053] The wireless temperature measuring device in this embodiment features a compact mechanical structure that allows for efficient arrangement of functional components, sensor leads, and coil leads. It also incorporates dynamic balance performance, making it suitable for use in high-speed rotating environments. A cover plate, manufactured using processes such as injection molding or glue injection, ensures excellent dynamic balance, strong anti-contamination capabilities, and a long service life. This wireless temperature measuring device is coaxially connected to the rotating object being measured and rotates at high speed alongside it, enabling real-time temperature measurement. Its excellent dynamic balance further enhances measurement accuracy.

[0054] In summary, the above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A high-speed rotating wireless temperature measuring device, characterized in that, The device is coaxially connected to the object being tested. The device includes a rotating shaft (1), a housing (2), a circuit board assembly (3), a cover plate (4), and a wireless energy receiving coil (5). The housing (2) is concentrically mounted on the rotating shaft (1), the circuit board assembly (3) and the cover plate (4) are concentrically mounted on the housing (2), and the wireless energy receiving coil (5) is concentrically mounted in the groove on the cover plate (4). The housing (2) is provided with a housing wire groove (21); The circuit board assembly (3) is electrically connected to the wireless power receiving coil (5); The temperature sensor on the object being measured is electrically connected to the circuit board assembly (3) via a housing through a wire groove (21).

2. The high-speed rotating wireless temperature measuring device according to claim 1, characterized in that, The rotating shaft (1) has symmetrically arranged shaft through grooves (11) on both sides.

3. The high-speed rotating wireless temperature measuring device according to claim 2, characterized in that, The device also includes a sensor lead (100) connected to the temperature sensor.

4. The high-speed rotating wireless temperature measuring device according to claim 3, characterized in that, The sensor lead (100) is connected from the temperature sensor through the shaft wire groove (11) and the housing wire groove (21) to the circuit board assembly (3).

5. The high-speed rotating wireless temperature measuring device according to claim 1, characterized in that, The cover plate (4) is provided with symmetrical cover plate grooves (41).

6. The high-speed rotating wireless temperature measuring device according to claim 5, characterized in that, The device also includes coil leads (101) connected to the wireless power receiving coil (5).

7. The high-speed rotating wireless temperature measuring device according to claim 6, characterized in that, The coil lead (101) passes through the cover plate wire groove (41) and the housing wire groove (21) in sequence and is then electrically connected to the circuit board assembly (3).

8. The high-speed rotating wireless temperature measuring device according to claim 1, characterized in that, The housing (2) is provided with a boss in the form of a bushing structure, and housing through grooves (21) are symmetrically provided on the boss.

9. A high-speed rotating wireless temperature measuring device according to claim 1, characterized in that, The rotating shaft (1) and the housing (2) are connected by interference fit or adhesive bonding.

10. A high-speed rotating wireless temperature measuring device according to claim 1, characterized in that, The housing (2) and circuit board assembly (3), as well as the housing (2) and cover plate (4), are assembled with a small clearance and fixed with adhesive.

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