Compressor, rotation position detection mechanism of compressor, heat management system and vehicle

Abstract

The utility model relates to a compressor and a rotation position detection mechanism thereof, a heat management system and a vehicle, the compressor comprises a fixed part and a moving part, and the rotation position detection mechanism comprises a target gear, a first gear, a second gear, a third gear, a fourth gear and a fifth gear, the target gear is used for being arranged on the moving part so as to synchronously rotate with the moving part; and the sensor is used for being arranged on the fixed part and arranged opposite to the target gear so as to determine the motion information of the motion part through the target gear. The mode that the target gear is matched with the sensor is adopted, the rotating position of the moving part of the compressor is obtained according to the change of the induced electromotive force, so that the actual rotating position information is detected, and an electric control assembly of the compressor can accurately control the compressor to work according to the received position information. According to the technical scheme, structures such as a wire harness do not need to be connected between the target gear and the sensor, the structure is simpler, parts for sealing the wire harness are omitted, and therefore the risk that liquid in the compressor shell leaks is avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of compressors, and in particular, to a compressor and a rotation position detection mechanism thereof, a thermal management system and a vehicle. Background Art

[0002] The rotation information of the compressor (such as rotation speed and rotation angle) needs to be controlled by the electronic control assembly. Specifically, the signal interaction is achieved by connecting the resolver installed on the compressor crankshaft to the electronic control harness. The resolver structure requires the installation of a resolver rotor and a resolver stator in the casing on the side of the moving part of the compressor. The signal output by the resolver stator passes through the casing and is connected to the electronic control assembly through the resolver harness. This structural connection is complex, and it is necessary to consider the sealing between the resolver harness and the casing, as well as the compatibility of the resolver harness with the refrigerant and refrigeration oil in the compression part. This leads to an increase in the cost of parts and materials, and there is a risk of liquid leakage. Utility Model Content

[0003] An object of the present disclosure is to provide a compressor and a rotation position detection mechanism thereof, a thermal management system and a vehicle, so as to at least partially solve the problems existing in the related art.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a rotation position detection mechanism for a compressor, wherein the compressor includes a fixed part and a moving part, and the rotation position detection mechanism includes: a target gear, which is used to be set on the moving part to rotate synchronously with the moving part; and a sensor, which is used to be set on the fixed part and is arranged relative to the target gear to determine the movement information of the moving part through the target gear.

[0005] Optionally, the curvature of the circumferential surface of the target gear where there are teeth is the same as the curvature of the circumferential surface of the target gear where there are no teeth.

[0006] Optionally, the target gear has at least two teeth.

[0007] Optionally, the target gear has six teeth.

[0008] Optionally, the target gear and the sensor are both constructed as circular ring structures, and are configured to be aligned in the direction of the central axis of the target gear.

[0009] Optionally, the detection mechanism includes an electronic control assembly, the electronic control assembly includes an electronic control component, and the sensor is electrically connected to the electronic control component.

[0010] Optionally, the electric control assembly includes an electric control box for accommodating the electric control component, and the target gear and the sensor are both arranged on the inner side of the electric control box or on the same side of the outer side of the electric control box.

[0011] Optionally, the target gear and the sensor are both arranged on the same side of the outer side of the electric control box, and the sensor is electrically connected to the electric control component via a pin passing through the electric control box.

[0012] Optionally, the sensor is detachably mounted on the outer surface of the electric control box.

[0013] According to a second aspect of an embodiment of the present disclosure, a compressor is provided, comprising a fixed portion, a moving portion, and a rotation position detection mechanism of the compressor provided by the present disclosure.

[0014] Optionally, the moving part includes a crankshaft, and the target gear is coaxially connected to the crankshaft.

[0015] Optionally, the target gear is configured to be provided at an end of the crankshaft.

[0016] According to a third aspect of an embodiment of the present disclosure, a thermal management system is provided, including the compressor provided by the present disclosure.

[0017] According to a fourth aspect of an embodiment of the present disclosure, a vehicle is provided, comprising the thermal management system provided by the present disclosure.

[0018] Through the above technical solution, in terms of the rotation control of the compressor, the target gear and the sensor are matched, and the rotation position of the moving part of the compressor is obtained according to the change of the induced electromotive force, so as to detect the actual rotation position information, and the electronic control assembly of the compressor can accurately control the operation of the compressor according to the received position information. In this technical solution, there is no need to connect the wiring harness and other structures between the target gear and the sensor, the structure is simpler, and the components of the sealing wiring harness are omitted, thereby avoiding the risk of liquid leakage in the compressor casing.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0021] Figure 1 is a schematic diagram of a rotation position detection mechanism provided by an exemplary embodiment of the present disclosure.

[0022] Figure 2 Schematic diagram of the installation of a sensor provided by an exemplary embodiment of the present disclosure.

[0023] Figure 3 is a schematic diagram of a target gear provided by an exemplary embodiment of the present disclosure.

[0024] Figure 4 is a cross-sectional view of a compressor provided according to an exemplary embodiment of the present disclosure.

[0025] Figure 5 yes Figure 4 Enlarged view of part A in .

[0026] Description of Reference Numerals

[0027] 10-fixed part, 20-moving part, 210-crankshaft, 31-target gear, 32-sensor, 321-pin, 322-fastener, 40-electronic control assembly, 41-electronic control box, 42-electronic control component. DETAILED DESCRIPTION

[0028] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0029] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. In the present disclosure, in the absence of any contrary description, the used directional words such as "inside, outside" are defined for the own outlines of the corresponding parts.

[0030] The compressor has a fixed part 10 and a moving part 20, wherein the fixed part 10 at least includes an electronic control assembly, a housing of the compressor, and a motor stator, and the moving part 20 at least includes a crankshaft and a motor rotor that rotates synchronously with the crankshaft. In order to detect the rotational position of the compressor, an embodiment of the present disclosure provides a rotational position detection mechanism for the compressor.

[0031] Among them, refer to Figures 1 to 5 The rotation position detection mechanism includes a target gear 31 and a sensor 32. The target gear 31 is used to be set on the moving part 20 to rotate synchronously with the moving part 20; the sensor 32 is used to be set on the fixed part 10 and is arranged opposite to the target gear 31 to determine the motion information of the moving part 20 through the target gear 31. The transmitting coil in the sensor 32 excites a high-frequency oscillating magnetic field, and the receiving coil in the sensor 32 generates a high-frequency oscillating induced electromotive force due to electromagnetic induction.

[0032] When the moving part 20 rotates, the target gear 31 rotates synchronously therewith. The induced eddy currents generated by the magnetic field on the tooth surface of the target gear 31 weaken the magnetic field excited by the transmitting coil in the sensor 32. At this time, the induced electromotive force of the receiving coil in the sensor 32 also decreases accordingly. As the target gear 31 rotates, the induced electromotive force of the receiving coil changes with the area covered by the tooth surface of the target gear 31. The sensor 32 outputs the position signal of the target gear 31 to the electronic control assembly. After receiving the position signal from the sensor 32, the electronic control assembly adjusts the rotation information such as the direction and speed of the moving part 20 to make the actual rotation position consistent with the target rotation position.

[0033] Through the above technical solution, in terms of the rotation control of the compressor, the target gear 31 and the sensor 32 are matched to obtain the rotation position of the moving part 20 of the compressor according to the change of the induced electromotive force, thereby detecting the actual rotation position information, and the electronic control assembly of the compressor can accurately control the operation of the compressor according to the received position information. In this technical solution, there is no need to connect the wiring harness and other structures between the target gear 31 and the sensor 32, the structure is simpler, and the components of the sealing wiring harness are omitted, thereby avoiding the risk of liquid leakage in the compressor shell.

[0034] In the embodiment of the present disclosure, the curvature of the circumferential surface of the target gear 31 where there are teeth is the same as the curvature of the circumferential surface where there are no teeth. Figure 3 In the figure, the dotted line represents the arc surface with teeth, and the solid line concentric with the dotted line represents the arc surface without teeth. In the embodiment of the present disclosure, the curvature of the arc surface where the dotted line is located can be the same as the curvature of the arc surface where the solid line is located. In this way, the area that can cover the sensor and the area that does not cover the sensor can be the same, making the position detection strategy easier and ensuring more accurate detection.

[0035] In the embodiment of the present disclosure, in order to ensure that valid position information can be obtained, the number of teeth of the target gear 31 can be set to at least two, so that the rotation information of the target gear 31 can be determined by the coverage area of ​​the tooth surface.

[0036] The more teeth the target gear 31 has, the more accurate the detection result will be. However, too many teeth will also increase the difficulty of signal feedback. Figure 3 The number of teeth of the target gear 31 can be set to six to meet the detection requirements, making the control of the compressor more precise without making the control more complicated.

[0037] In the embodiment of the present disclosure, the target gear 31 and the sensor 32 are both constructed as a circular ring structure, and are configured with the central axis coaxially. When the target gear 31 is coaxially installed with the crankshaft 210, the central axis is the central axis of the crankshaft. In order to ensure the reliability and simplicity of detection, the target gear 31 and the sensor 32 are aligned in the direction of the central axis to ensure that the tooth surface can cover the sensor 32. Figure 1 It should be noted that the sensor 32 has a main body for detection and a structure for connecting with other structures, such as a structure for setting the pin 321. The sensor 32 in the embodiment of the present disclosure is configured as a circular ring structure, which means that its main body is a circular ring structure.

[0038] Reference Figure 2 , Figure 4 and Figure 5 The detection mechanism may include an electric control assembly 40, which may be a part of the detection mechanism or a part of the fixing portion 10. The electric control assembly 40 may include an electric control unit 42, which may include a circuit board, and the sensor 32 may be electrically connected to the electric control unit 42 to feed back the position information of the target gear 31 to the electric control unit 42.

[0039] The electric control unit 42 may also be used to be electrically connected to the moving part 20 , for example, to be connected to the stator of the compressor to control the stator output current of the compressor.

[0040] The electronic control assembly 40 may further include an electronic control box 41 for accommodating an electronic control unit 42. In order to ensure that the sensor 32 and the target gear 31 are not separated, the disclosed embodiment may arrange the target gear 31 and the sensor 32 on the same side of the electronic control box 41, such as both being arranged on the same side of the inner side or the outer side of the electronic control box 41, so as to avoid being separated by the electronic control box 41 and affecting the detection result.

[0041] When both are located outside the electric control box 41, the sensor 32 can be electrically connected to the electric control unit 42 by passing through the electric control box 41 through the pin 321. In this case, a mounting plate for mounting the sensor 32 can be formed separately on the compressor casing, or the sensor 32 can be directly and detachably mounted on the outer surface of the electric control box 41. This method directly utilizes the structure of the electric control box 41, simplifies the structure, does not need to destroy the structure of the electric control box 41 itself, and facilitates the connection between the sensor 32 and the electric control unit 42 inside the electric control box 41.

[0042] In other embodiments, part of the moving part 20 of the compression part can also be extended into the electronic control box 41. For example, the end of the crankshaft 210 is extended into the electronic control box 41, the target gear 31 is installed at the end of the crankshaft 210, and the sensor 32 can be directly connected to the electronic control unit 42.

[0043] According to a second aspect of the embodiment of the present disclosure, referring to Figure 4 , a compressor is provided, comprising a fixed part 10, a moving part 20 and the above-mentioned compressor rotation position detection mechanism. The compressor has all the beneficial effects of the above-mentioned rotation position detection mechanism, which will not be repeated here.

[0044] The moving part 20 includes a crankshaft 210 , and the target gear 31 can be coaxially connected to the crankshaft 210 . This connection method is easier to implement and simplifies the installation structure.

[0045] The target gear 31 is configured to be disposed at the end of the crankshaft 210, so that the target gear 31 and the sensor 32 can be as close as possible to ensure the detection effect. The target gear can be sleeved on the outer periphery of the crankshaft 210 by interference, or the two can be connected in the axial direction by a pin, which is not limited in the present disclosure.

[0046] According to a third aspect of the embodiment of the present disclosure, a thermal management system is provided, which includes the above-mentioned compressor and has all the beneficial effects of the above-mentioned compressor, which will not be repeated here. The thermal management system may include a refrigeration system, and through the precise control of the compressor, the low speed of the compressor can be precisely controlled to meet the low refrigeration capacity requirements.

[0047] According to a fourth aspect of an embodiment of the present disclosure, a vehicle is provided, comprising the above-mentioned thermal management system and having all the beneficial effects of the above-mentioned thermal management system, which will not be described in detail here.

[0048] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0049] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0050] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A rotation position detection mechanism for a compressor, the compressor comprising a fixed part and a moving part, characterized in that: The rotation position detection mechanism comprises: a target gear, configured to be disposed on the moving part so as to rotate synchronously with the moving part; The sensor is used to be arranged on the fixed part and arranged opposite to the target gear to determine the motion information of the moving part through the target gear.

2. The rotation position detection mechanism according to claim 1, characterized in that: The curvature of the circumferential surface of the target gear where there are teeth is the same as the curvature of the circumferential surface of the target gear where there are no teeth.

3. The rotation position detection mechanism according to claim 1, characterized in that: The target gear has at least two teeth.

4. The rotation position detection mechanism according to claim 3, characterized in that: The target gear has six teeth.

5. The rotation position detection mechanism according to claim 1, characterized in that: The target gear and the sensor are both constructed as circular ring structures and are arranged to be aligned in the direction of the central axis of the target gear.

6. The rotation position detection mechanism according to claim 1, characterized in that: The detection mechanism includes an electric control assembly, the electric control assembly includes an electric control component, and the sensor is electrically connected to the electric control component.

7. The rotation position detection mechanism according to claim 6, characterized in that: The electric control assembly includes an electric control box for accommodating the electric control component, and the target gear and the sensor are both arranged on the inner side of the electric control box or on the same side of the outer side of the electric control box.

8. The rotation position detection mechanism according to claim 7, characterized in that: in, The target gear and the sensor are both arranged on the same side of the outer side of the electric control box, and the sensor is electrically connected to the electric control unit via a pin passing through the electric control box.

9. The rotation position detection mechanism according to claim 8, characterized in that: The sensor is detachably mounted on the outer surface of the electric control box.

10. A compressor, characterized in that: The invention comprises a fixed part, a moving part and a rotation position detection mechanism of a compressor according to any one of claims 1 to 9.

11. The compressor according to claim 10, characterized in that The moving part includes a crankshaft, and the target gear is coaxially connected to the crankshaft.

12. The compressor according to claim 11, characterized in that The target gear is configured to be disposed at an end of the crankshaft.

13. A thermal management system, characterized in that: Comprising a compressor according to any one of claims 10-12.

14. A vehicle, characterized in that: Comprising a thermal management system according to claim 13.

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