Balance block of rotor assembly, rotor assembly, motor, compressor, thermal management system and vehicle

Abstract

The utility model discloses a rotor assembly counterbalance, rotor assembly, motor, compressor, thermal management system and vehicle, the counterbalance is installed on the rotor core of rotor assembly, in the thickness direction, the counterbalance comprises an installation surface and a flow guide surface, the installation surface is suitable for being installed on the rotor core, and the flow guide surface is suitable for being installed on the rotor core. The flow guide face and the installation face are oppositely arranged, and the flow guide face is a curved face. Therefore, the flow guide surface is arranged to be the curved surface, so that the flow guide surface can guide the flow of the refrigerant, the collision between the balance block and the refrigerant is reduced, the elimination of air abrasion is facilitated, the refrigerant can be better attached to the surface of the balance block to flow, the heat exchange effect of the refrigerant is improved, the generation and breakage of a trailing edge vortex are reduced, and the noise is reduced.

Description

Technical Field

[0001] The utility model relates to the field of compressors, in particular to a balancing block, a rotor assembly, a motor, a compressor, a thermal management system and a vehicle. Background Art

[0002] In the related art, the motor rotor is provided with a main and auxiliary balancing block, which is designed to balance the eccentric part of the crankshaft. However, during the operation of the compressor, the refrigerant will impact the windward side of the balancing block, resulting in a large flow resistance on the balancing block, severe wind grinding, and the refrigerant cannot flow along the balancing block, resulting in low heat exchange efficiency, and more vortices on the trailing edge of the balancing block, resulting in high noise, so there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a balancing block of a rotor assembly, which can reduce the collision between the balancing block and the refrigerant, which is conducive to eliminating wind grinding, and the refrigerant can better adhere to the surface of the balancing block to flow, thereby improving the heat exchange effect of the refrigerant, and is also conducive to reducing the generation and breakage of the trailing edge vortex and reducing noise.

[0004] According to the balancing block of the rotor assembly of the embodiment of the utility model, the balancing block is installed to the rotor core of the rotor assembly, and is characterized in that in the thickness direction, the balancing block includes a mounting surface and a guide surface, the mounting surface is suitable for being installed to the rotor core, the guide surface and the mounting surface are arranged opposite to each other and the guide surface is formed as a curved surface.

[0005] According to the balancing block of the rotor assembly in the embodiment of the utility model, the guide surface is set as a curved surface so that the guide surface can guide the refrigerant, thereby reducing the collision between the balancing block and the refrigerant, which is beneficial to eliminating wind grinding, and the refrigerant can better adhere to the surface of the balancing block to flow, thereby improving the heat exchange effect of the refrigerant, and is also beneficial to reducing the generation and breakage of the trailing edge vortex and reducing noise.

[0006] According to the balancing block of the rotor assembly in some embodiments of the present invention, the guide surface is an arc-shaped surface.

[0007] According to the balancing block of the rotor assembly in some embodiments of the present invention, in the length direction, the thickness of the balancing block first gradually increases and then gradually decreases.

[0008] According to the balancing block of the rotor assembly of some embodiments of the utility model, on a cross section parallel to the thickness direction and the length direction, one end of the guide surface is defined as a positioning endpoint, and a positioning line parallel to the mounting surface is provided through the positioning endpoint; in the length direction, the positioning line is provided with the center of a first positioning circle, the center of a second positioning circle and the center of a third positioning circle which are sequentially spaced apart, the first positioning circle, the second positioning circle and the third positioning circle are respectively tangent to the guide surface, and the first positioning circle is tangent to the positioning endpoint; the diameter of the second positioning circle is larger than the diameter of the third positioning circle, and the diameter of the third positioning circle is larger than the diameter of the first positioning circle.

[0009] According to the balancing block of the rotor assembly of some embodiments of the present utility model, the projection length of the guide surface on the positioning line is c, the spacing and diameter between the center of the first positioning circle and the positioning endpoint are both c0, the spacing between the center of the second positioning circle and the positioning endpoint is c1 and the diameter is D1, the spacing between the center of the third positioning circle and the positioning endpoint is c2 and the diameter is D2, and the balancing block satisfies at least one of the following conditions: 0.05c≤c0≤0.055c, 0.29c≤c1≤0.31c, 0.17c≤D1≤0.18c, 0.59c≤c2≤0.61c, 0.13c≤D2≤0.14c.

[0010] According to the balancing block of the rotor assembly of some embodiments of the present invention, a trajectory endpoint is formed at the other end of the guide surface, and the spacing between the trajectory endpoint and the positioning line is h1, which satisfies: 0.08mm≤h1≤0.09mm.

[0011] According to some embodiments of the present invention, the balancing weight of the rotor assembly satisfies: 0.085 mm ≤ h1 ≤ 0.09 mm.

[0012] According to the balancing block of the rotor assembly in some embodiments of the present invention, the two ends of the guide surface are directly connected to the two ends of the mounting surface respectively.

[0013] According to the balancing block of the rotor assembly in some embodiments of the present invention, the two ends of the guide surface are directly connected to the two ends of the mounting surface through transition surfaces respectively.

[0014] According to the balancing block of the rotor assembly of some embodiments of the present invention, in the thickness direction, the height of the transition surface is h0, which satisfies: 0mm<h0≤8mm.

[0015] According to some embodiments of the present invention, the balancing weight of the rotor assembly satisfies: 4mm<h0≤8mm.

[0016] According to the balancing block of the rotor assembly of some embodiments of the present invention, a plane parallel to the mounting surface is defined as a projection surface, an outer peripheral wall of the positive projection of the balancing block includes a first arcuate surface and a second arcuate surface arranged opposite to each other, and the balancing block is arranged radially symmetrically.

[0017] According to the balancing block of the rotor assembly of some embodiments of the present invention, the first arcuate surface and the second arcuate surface are spaced apart in the width direction, and both ends of the first arcuate surface and both ends of the second arcuate surface are connected by a third arcuate surface.

[0018] According to the balancing block of the rotor assembly of some embodiments of the present invention, a circle tangent to and concentric with the third arcuate surface is defined as a fourth positioning circle; a circle tangent to the first arcuate surface and the second arcuate surface respectively and concentric with the geometric center of the balancing block is defined as a fifth positioning circle; a positioning circle located between the fourth positioning circle and the fifth positioning circle is defined as a sixth positioning circle, and the sixth positioning circle is tangent to the first arcuate surface and the second arcuate surface respectively; in the length direction, the maximum length of the balancing block is c, and the fourth The diameter of the positioning circle is d1, the distance between the center of the fifth positioning circle and the center of the fourth positioning circle along the length direction is w1 and the diameter is d2, the distance between the center of the sixth positioning circle and the center of the fourth positioning circle along the length direction is w2 and the diameter is d3, and the balancing block satisfies at least one of the following conditions: 0.15c≤d1≤0.16c, 0.24c≤d2≤0.25c, 0.3c≤d3≤0.31c, 0.42c≤w1≤0.43c, 0.24c≤w2≤0.25c.

[0019] The utility model also provides a rotor assembly.

[0020] According to the rotor assembly of the embodiment of the utility model, it includes: a rotor core, the rotor core is formed with a refrigerant hole extending axially therethrough; a balancing block, the balancing block is a balancing block according to any of the above embodiments, and the mounting surface of the balancing block is mounted to the rotor core.

[0021] The utility model further provides a motor.

[0022] The motor according to an embodiment of the utility model includes: a rotor assembly according to any of the above embodiments.

[0023] The utility model further provides a compressor.

[0024] A compressor according to an embodiment of the utility model includes: a motor according to any one of the above embodiments.

[0025] The utility model also proposes a thermal management system.

[0026] A thermal management system according to an embodiment of the present utility model includes: a compressor according to any one of the above embodiments.

[0027] The utility model further provides a vehicle.

[0028] A vehicle according to an embodiment of the utility model includes: a balancing block according to any of the above embodiments; or a rotor assembly according to any of the above embodiments; or a motor according to any of the above embodiments; or a compressor according to any of the above embodiments; or a thermal management system according to any of the above embodiments.

[0029] The rotor assembly, the motor, the compressor, the thermal management system, the vehicle and the balancing block have the same advantages as those of the prior art, which will not be elaborated here.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 is a schematic diagram of a rotor assembly according to an embodiment of the utility model;

[0033] Figure 2 is a schematic diagram of a rotor assembly from another perspective according to an embodiment of the utility model;

[0034] Figure 3 is a front view of a balancing weight according to an embodiment of the utility model;

[0035] Figure 4 is a front view of a balancing weight according to another embodiment of the utility model;

[0036] Figure 5 It is a top view of a balancing weight according to an embodiment of the utility model.

[0037] Reference numerals:

[0038] Rotor assembly 100, crankshaft 200,

[0039] Balancing block 1, mounting surface 11, guide surface 12, positioning end point 12a, trajectory end point 12b, positioning line 13, first positioning circle 141, second positioning circle 142, third positioning circle 143, fourth positioning circle 151, fifth positioning circle 152, sixth positioning circle 153, transition surface 16, connecting surface 17, mounting through hole 18, first arc surface 191, second arc surface 192, third arc surface 193,

[0040] The rotor core 2 , the coolant hole 21 , the connection hole 22 , the thickness direction L1 , the length direction L2 , and the width direction L3 . DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] Hereinafter, with reference to the accompanying drawings, a balancing weight 1 of a rotor assembly according to an embodiment of the present utility model will be described.

[0043] It should be noted that if Figure 1-Figure 2 As shown, the rotor assembly 100 includes a balancing block 1 and a rotor core 2. A crankshaft 200 is inserted into the rotor core 2 so that the rotor core 2 can drive the crankshaft 200 to rotate synchronously. A coolant hole 21 is formed around the crankshaft 200 in the rotor core 2. The coolant hole 21 axially penetrates the rotor core 2. The coolant is used to circulate in the coolant hole 21 so that the coolant can cool the rotor core 2 and the crankshaft 200. At the same time, the balancing block 1 is used to be installed at the end of the rotor core 2 along the axial direction to counterweight the rotor core 2, thereby ensuring the stability of the movement of the rotor core 2.

[0044] like Figure 1-Figure 5 As shown, according to the balancing block 1 of the rotor assembly of the embodiment of the utility model, in the thickness direction L1, the balancing block 1 includes a mounting surface 11 and a guide surface 12, the mounting surface 11 is suitable for being installed to the rotor core 2, the guide surface 12 and the mounting surface 11 are arranged opposite to each other and the guide surface 12 is formed as a curved surface.

[0045] As a result, the guide surface 12 can guide the refrigerant, reducing the collision between the balance block 1 and the refrigerant, which is conducive to eliminating wind grinding, and the refrigerant can flow better on the surface of the balance block 1, thereby improving the heat exchange effect of the refrigerant. It is also beneficial to reduce the generation and breakage of the trailing edge vortex and reduce noise.

[0046] First, if Figure 3As shown, in the thickness direction L1, the two sides of the balancing block 1 are respectively formed as a mounting surface 11 and a guide surface 12, the mounting surface 11 is configured as a plane, and the mounting surface 11 is used to fit on the end of the rotor core 2 along the axial direction to be installed and connected with the rotor core 2. The guide surface 12 is arranged opposite to the mounting surface 11, and the guide surface 12 is located on the side of the balancing block 1 away from the rotor core 2, and the guide surface 12 is formed as a curved surface.

[0047] It should be noted that a mounting through hole 18 penetrating along the thickness direction L1 may be provided on the balancing block 1, and a connecting hole 22 may be provided on the rotor core 2, and a connecting member may penetrate the mounting through hole 18 and be connected to the connecting hole 22 to fix the balancing block 1 on the rotor core 2. Preferably, the mounting through hole 18 and the connecting hole 22 may be configured as threaded holes, and the connecting member may be a screw or a bolt.

[0048] During the specific working process, when the rotor core 2 drives the crankshaft 200 to rotate, the refrigerant flows from one end of the rotor core 2 to the other end of the rotor core 2 through the refrigerant hole 21. At this time, the balance block 1 can rotate synchronously with the rotor core 2 and contact the refrigerant. The guide surface 12 of the balance block 1 is used to guide the refrigerant to reduce the collision between the balance block 1 and the refrigerant and reduce wind friction, so that the refrigerant can better adhere to the surface of the balance block 1 and flow, thereby improving the heat exchange efficiency between the refrigerant and the rotor assembly 100, and can reduce the generation and breakage of the trailing edge vortex, which is beneficial to reduce noise.

[0049] According to the balancing block 1 of the rotor assembly in the embodiment of the utility model, the guide surface 12 is set as a curved surface so that the guide surface 12 can guide the refrigerant, thereby reducing the collision between the balancing block 1 and the refrigerant, which is beneficial to eliminating wind grinding, and the refrigerant can better adhere to the surface of the balancing block 1 to flow, thereby improving the heat exchange effect of the refrigerant, and is also beneficial to reducing the generation and breakage of the trailing edge vortex and reducing noise.

[0050] In some embodiments of the present invention, Figure 3 As shown, the guide surface 12 can be set as an arc surface, such as a circular arc, an elliptical arc, etc. In this way, the guide effect of the guide surface 12 can be improved, and the practicality of the balancing weight 1 is improved.

[0051] In some embodiments of the present invention, Figure 3 As shown, the length direction L2 is perpendicular to the thickness direction L1. In the length direction L2, the thickness of the balancing block 1 can be gradually increased and then gradually decreased, so as to construct the balancing block 1 into a wing shape, thereby making the shape of the guide surface 12 more dynamic. In this way, the guide effect of the guide surface 12 can be further improved.

[0052] In some embodiments of the utility model, on a cross section parallel to the thickness direction L1 and the length direction L2, one end of the guide surface 12 is defined as a positioning endpoint 12a, and a positioning line 13 parallel to the mounting surface 11 is provided through the positioning endpoint 12a; in the length direction L2, the positioning line 13 is provided with the center of a first positioning circle 141, the center of a second positioning circle 142, and the center of a third positioning circle 143 which are sequentially spaced apart, the first positioning circle 141, the second positioning circle 142, and the third positioning circle 143 are respectively tangent to the guide surface 12, and the first positioning circle 141 is tangent to the positioning endpoint 12a; the diameter of the second positioning circle 142 is greater than the diameter of the third positioning circle 143, and the diameter of the third positioning circle 143 is greater than the diameter of the first positioning circle 141.

[0053] For example, refer to Figure 4 As shown, on a cross section parallel to the thickness direction L1 and the length direction L2, one end of the guide surface 12 can be defined as a positioning end point 12a, and a positioning line 13 parallel to (or coincident with) the mounting surface 11 is provided through the positioning end point 12a, as defined Figure 4 The left end of the guide surface 12 shown is a positioning end point 12a.

[0054] At the same time, in the length direction L2, the positioning line 13 is provided with the centers of the first positioning circle 141, the second positioning circle 142 and the third positioning circle 143 which are sequentially spaced apart, the first positioning circle 141, the second positioning circle 142 and the third positioning circle 143 are tangent to the guide surface 12 respectively, and the first positioning circle 141 can also be tangent to the positioning end point 12a, the diameter of the second positioning circle 142 is larger than the diameter of the third positioning circle 143, and the diameter of the third positioning circle 143 is larger than the diameter of the first positioning circle 141. Thus, the shape of the guide surface 12 can be made more aerodynamic, and the guide effect of the guide surface 12 is improved.

[0055] In some embodiments of the present invention, the projection length of the guide surface 12 on the positioning line 13 is c, the spacing and diameter between the center of the first positioning circle 141 and the positioning endpoint 12a are both c0, the spacing between the center of the second positioning circle 142 and the positioning endpoint 12a is c1 and the diameter is D1, the spacing between the center of the third positioning circle 143 and the positioning endpoint 12a is c2 and the diameter is D2, and the balancing block 1 satisfies at least one of the following conditions: 0.05c≤c0≤0.055c, 0.29c≤c1≤0.31c, 0.17c≤D1≤0.18c, 0.59c≤c2≤0.61c, 0.13c≤D2≤0.14c.

[0056] For example, refer to Figure 4As shown, the projection length of the guide surface 12 on the positioning line 13 (i.e., the maximum length of the balancing block 1 described below) is c, and the spacing and diameter between the center of the first positioning circle 141 and the positioning endpoint 12a can be set to c0; the spacing between the center of the second positioning circle 142 and the positioning endpoint 12a can be set to c1, and the diameter of the second positioning circle 142 can be set to D1; the spacing between the center of the third positioning circle 143 and the positioning endpoint 12a can also be set to c2, and the diameter of the third positioning circle 143 can be set to D2, and the balancing block 1 satisfies at least one of the following conditions: 0.05c≤c0≤0.055c, 0.29c≤c1≤00.31c, 0.17c≤D1≤0.18c, 0.59c≤c2≤0.61c, 0.13c≤D2≤0.14c.

[0057] That is to say, the distance c0 between the center of the first positioning circle 141 and the positioning endpoint 12a can be set to be greater than or equal to 0.05 times the projection length c of the guide surface 12 on the positioning line 13, and less than or equal to 0.055 times the projection length c of the guide surface 12 on the positioning line 13, such as setting the distance c0 between the center of the first positioning circle 141 and the positioning endpoint 12a to 0.051c, 0.052c, 0.053c, 0.054c, etc.

[0058] At the same time, the distance c1 between the center of the second positioning circle 142 and the positioning end point 12a can be set to be greater than or equal to 0.29 times the projection length c of the guide surface 12 on the positioning line 13, and less than or equal to 0.31 times the projection length c of the guide surface 12 on the positioning line 13, such as 0.295c, 0.3c, 0.305c, etc.; the diameter D1 of the second positioning circle 142 can also be set to be greater than or equal to 0.17 times the projection length c of the guide surface 12 on the positioning line 13, and less than or equal to 0.18 times the projection length c of the guide surface 12 on the positioning line 13, such as 0.172c, 0.175c, 0.178c, etc.

[0059] At the same time, the distance c2 between the center of the third positioning circle 143 and the positioning endpoint 12a can be set to be greater than or equal to 0.59 times the projection length c of the guide surface 12 on the positioning line 13, and less than or equal to 0.61 times the projection length c of the guide surface 12 on the positioning line 13, such as 0.595c, 0.6c, 0.605c, etc.; the diameter D2 of the third positioning circle 143 can also be set to be greater than or equal to 0.13 times the projection length c of the guide surface 12 on the positioning line 13, and less than or equal to 0.14 times the projection length c of the guide surface 12 on the positioning line 13, such as 0.132c, 0.135c, 0.138c, etc.

[0060] Through the above arrangement, the guide surface 12 can have a better guide effect, which is beneficial to improving the overall performance of the balancing weight 1 and enhancing the practicality of the balancing weight 1.

[0061] In some embodiments of the present invention, Figure 4 As shown, the other end of the guide surface 12 can be defined as having a track endpoint 12b, and the spacing between the track endpoint 12b and the positioning line 13 is set to h1, satisfying: 0.08mm≤h1≤0.09mm. For example, the spacing h1 between the track endpoint 12b and the positioning line 13 can be set to 0.082mm; or, the spacing h1 between the track endpoint 12b and the positioning line 13 can be set to 0.085mm; or, the spacing h1 between the track endpoint 12b and the positioning line 13 can be set to 0.088mm, and this application does not limit this.

[0062] Through the above-mentioned arrangement, when the overall thickness of the balancing block 1 is small, the processing difficulty of the balancing block 1 can be reduced, especially when the two ends of the guide surface 12 are directly connected to the two ends of the mounting surface 11 respectively, it can avoid that one end of the balancing block 1 corresponding to the trajectory endpoint 12b is formed into a blade structure, which is beneficial to prevent the balancing block 1 from scratching other components and improves the design rationality of the balancing block 1.

[0063] More preferably, the balancing weight 1 may be arranged to satisfy: 0.085 mm ≤ h1 ≤ 0.09 mm.

[0064] In some embodiments of the present invention, Figure 3 As shown, the two ends of the guide surface 12 can be directly connected to the two ends of the mounting surface 11, and the portion separated by the guide surface 12 and the mounting surface 11 can be connected via a connecting surface 17 extending along the thickness direction L1. Through the above arrangement, the overall thickness of the balancing block 1 can be minimized, which is conducive to meeting specific counterweight requirements, and the overall guide effect of the balancing block 1 can be ensured, thereby improving the practicality of the balancing block 1.

[0065] In some embodiments of the present invention, Figure 4 As shown, the two ends of the guide surface 12 can be directly connected to the two ends of the mounting surface 11 through the transition surface 16, and the portion separated by the guide surface 12 and the mounting surface 11 can be connected through the connecting surface 17 extending along the thickness direction L1. It should be noted that when the extension size of the transition surface 16 changes, the size of the connecting surface 17 changes accordingly.

[0066] Through the above arrangement, the overall thickness of the balancing block 1 can be made larger, thereby increasing the overall weight of the balancing block 1 and helping to meet the counterweight requirement.

[0067] In some embodiments of the present invention, Figure 4As shown, in the thickness direction L1, the height of the transition surface 16 can be set to h0, satisfying: 0mm<h0≤8mm. Specifically, the height h0 of the transition surface 16 can be set to 1mm; or, the height h0 of the transition surface 16 can be set to 4mm; or, the height h0 of the transition surface 16 can be set to 7mm, and the present application does not impose any restrictions on this. Through the above settings, the balance block 1 can meet different counterweight requirements, and can avoid the overall thickness of the balance block 1 being too large to affect the flow conduction performance of the balance block 1, thereby improving the practicality of the balance block 1.

[0068] More preferably, the balancing weight 1 may be arranged to satisfy: 4mm<h0≤8mm.

[0069] In some embodiments of the present invention, Figure 5 As shown, a plane parallel to the mounting surface 11 is defined as a projection surface, and the outer peripheral wall of the positive projection of the balancing weight 1 includes a first arcuate surface 191 and a second arcuate surface 192 that are arranged opposite to each other, and the balancing weight 1 is arranged in radial symmetry.

[0070] For example, refer to Figure 1 and Figure 5 As shown, a plane parallel to the mounting surface 11 can be defined as a projection surface, and the outer peripheral wall of the positive projection of the balancing block 1 includes a first arcuate surface 191 and a second arcuate surface 192, and the first arcuate surface 191 and the second arcuate surface 192 are spaced apart and arranged oppositely along the radial direction of the rotor core 2, and the balancing block 1 is configured to be symmetrically arranged along the radial direction of the rotor core 2, so as to configure the balancing block 1 into an arc structure. In this way, the flow guiding effect of the balancing block 1 can be improved.

[0071] Furthermore, if Figure 1 and Figure 5 As shown, the first arc surface 191 can be arranged radially outside the second arc surface 192, and the first arc surface 191 is made to coincide with the edge of the rotor core 2. This helps to reduce wind resistance and improves the design rationality of the balancing weight 1.

[0072] In some embodiments of the present invention, the first arcuate surface 191 and the second arcuate surface 192 are spaced apart in the width direction L3 , and both ends of the first arcuate surface 191 and both ends of the second arcuate surface 192 are connected via a third arcuate surface 193 .

[0073] For example, refer to Figure 5 As shown, the length direction L2 and the width direction L3 are set perpendicularly. Figure 5 The left and right directions shown in FIG. 1 and the width direction L3 are set as Figure 5The first arc surface 191 and the second arc surface 192 are arranged at intervals in the width direction L3, one end of the first arc surface 191 and the corresponding end of the second arc surface 192 are connected through the third arc surface 193, and the other end of the first arc surface 191 and the corresponding end of the second arc surface 192 are connected through the third arc surface 193, so that the first arc surface 191 and the second arc surface 192 can be smoothly connected. Therefore, it is beneficial to improve the flow guiding effect of the balance weight 1.

[0074] In some embodiments of the present invention, a circle tangent to and concentric with the third arcuate surface 193 is defined as a fourth positioning circle 151; a circle tangent to the first arcuate surface 191 and the second arcuate surface 192 respectively and concentric with the geometric center of the balancing block 1 is defined as a fifth positioning circle 152; a positioning circle located between the fourth positioning circle 151 and the fifth positioning circle 152 is defined as a sixth positioning circle 153, and the sixth positioning circle 153 is tangent to the first arcuate surface 191 and the second arcuate surface 192 respectively; in the length direction L2, the maximum length of the balancing block 1 is c, and the fourth positioning circle 152 is located between the fourth positioning circle 151 and the fifth positioning circle 152. The diameter of the positioning circle 151 is d1, the distance between the center of the fifth positioning circle 152 and the center of the fourth positioning circle 151 along the length direction is w1 and the diameter is d2, the distance between the center of the sixth positioning circle 153 and the center of the fourth positioning circle 151 along the length direction is w2 and the diameter is d3, and the balancing block 1 satisfies at least one of the following conditions: 0.15c≤d1≤0.16c, 0.24c≤d2≤0.25c, 0.3c≤d3≤0.31c, 0.42c≤w1≤0.43c, 0.24c≤w2≤0.25c.

[0075] For example, refer to Figure 5 As shown, a circle tangent to and concentric with the third arcuate surface 193 can be defined as a fourth positioning circle 151, and a circle tangent to the first arcuate surface 191 and the second arcuate surface 192 respectively and concentric with the geometric center of the balancing block 1 can be defined as a fifth positioning circle 152, and a positioning circle located between the fourth positioning circle 151 and the fifth positioning circle 152 can also be defined as a sixth positioning circle 153, and the sixth positioning circle 153 is tangent to the first arcuate surface 191 and the second arcuate surface 192 respectively.

[0076] In the length direction L2, the maximum length of the balancing block 1 can be set to c, and the diameter of the fourth positioning circle 151 can be set to d1; the distance between the center of the fifth positioning circle 152 and the center of the fourth positioning circle 151 along the length direction can be set to w1, and the diameter of the fifth positioning circle 152 can be set to d2; the distance between the center of the sixth positioning circle 153 and the center of the fourth positioning circle 151 along the length direction can be set to w2, and the diameter of the sixth positioning circle 153 can be set to d3, satisfying: 0.15c≤d1≤0.16c, 0.3c≤d2≤0.31c, 0.24c≤d3≤0.25c, 0.42c≤w1≤0.43c, 0.24c≤w2≤0.25c.

[0077] That is to say, the diameter d1 of the fourth positioning circle 151 can be set to be greater than or equal to 0.15 times the maximum length c of the balancing block 1, and less than or equal to 0.16 times the maximum length c of the balancing block 1, such as setting the diameter d1 of the fourth positioning circle 151 to 0.152c, 0.155c, 0.158c, etc.

[0078] At the same time, the distance w1 between the center of the fifth positioning circle 152 and the center of the fourth positioning circle 151 along the length direction can be set to be greater than or equal to 0.42 times the maximum length c of the balancing block 1, and less than or equal to 0.43 times the maximum length c of the balancing block 1, such as 0.422c, 0.425c, 0.428c, etc.; the diameter d2 of the fifth positioning circle 152 can also be set to be greater than or equal to 0.3 times the maximum length c of the balancing block 1, and less than or equal to 0.31 times the maximum length c of the balancing block 1, such as 0.302c, 0.305c, 0.308c, etc.

[0079] At the same time, the distance w2 between the center of the sixth positioning circle 153 and the center of the fourth positioning circle 151 along the length direction can be set to be greater than or equal to 0.24 times the maximum length c of the balancing block 1, and less than or equal to 0.25 times the maximum length c of the balancing block 1, such as 0.242c, 0.245c, 0.248c, etc.; the diameter d3 of the sixth positioning circle 153 can also be set to be greater than or equal to 0.24 times the maximum length c of the balancing block 1, and less than or equal to 0.25 times the maximum length c of the balancing block 1, such as 0.242c, 0.245c, 0.248c, etc.

[0080] Through the above arrangement, the balancing weight 1 can have better wind guiding performance, which is beneficial to improving the practicality of the balancing weight 1.

[0081] The utility model also provides a rotor assembly 100 .

[0082] like Figure 1-Figure 2As shown, the rotor assembly 100 according to the embodiment of the utility model comprises: a rotor core 2 and a balancing block 1, wherein the rotor core 2 is formed with a coolant hole 21 penetrating in the axial direction; the balancing block 1 is a balancing block 1 according to any of the above embodiments, and the mounting surface 11 of the balancing block 1 is mounted to the rotor core 2. Specifically, there can be one balancing block 1, and one balancing block 1 can be mounted at either end of the rotor core 2 in the axial direction; there can also be two balancing blocks 1, and the two balancing blocks 1 are respectively mounted at the two ends of the rotor core 2 in the axial direction and are symmetrically arranged with respect to the radial direction of the rotor core 2.

[0083] It should be noted that the thickness of the balancing block 1 needs to be set according to the actual design. For example, a counterweight block can be provided on the crankshaft 200, and one of the two balancing blocks 1 closer to the counterweight block is set to have a larger thickness.

[0084] According to the rotor assembly 100 of the embodiment of the utility model, by setting the guide surface 12 as a curved surface, the guide surface 12 can guide the refrigerant, thereby reducing the collision between the balance block 1 and the refrigerant, which is beneficial to eliminating wind grinding, and the refrigerant can better adhere to the surface of the balance block 1 to flow, thereby improving the heat exchange effect of the refrigerant, and is also beneficial to reducing the generation and breakage of the trailing edge vortex, reducing noise, and improving the design rationality of the rotor assembly 100.

[0085] The utility model further provides a motor.

[0086] like Figure 1-Figure 2 As shown, the motor according to an embodiment of the present utility model includes: a rotor assembly 100 according to any one of the above embodiments.

[0087] According to the motor of the embodiment of the utility model, by setting the guide surface 12 as a curved surface, the guide surface 12 can guide the refrigerant, thereby reducing the collision between the balance block 1 and the refrigerant, which is beneficial to eliminating wind grinding, and the refrigerant can better adhere to the surface of the balance block 1 to flow, thereby improving the heat exchange effect of the refrigerant, and is also beneficial to reducing the generation and breakage of the trailing edge vortex, reducing noise, improving the design rationality of the rotor assembly 100, and improving the overall performance of the motor.

[0088] The utility model further provides a compressor.

[0089] A compressor according to an embodiment of the utility model includes: a motor according to any one of the above embodiments.

[0090] According to the compressor of the embodiment of the utility model, the guide surface 12 is set as a curved surface so that the guide surface 12 can guide the refrigerant, thereby reducing the collision between the balance block 1 and the refrigerant and reducing wind friction, so that the refrigerant can better adhere to the surface of the balance block 1 and flow, thereby improving the heat exchange effect of the refrigerant, and is beneficial to reducing the generation and breakage of the trailing edge vortex, reducing noise, improving the design rationality of the rotor assembly 100, improving the overall performance of the motor, and ensuring the reliability of the compressor.

[0091] The technical solution of the present application adopts a multi-tooth scroll structure, utilizing the characteristics of multiple teeth. Compared with traditional volumetric compressors, engines and other structures, it has fewer moving parts, simpler assembly, less vibration and noise, smaller overall structural dimensions, and a smoother energy conversion process.

[0092] The utility model also proposes a thermal management system.

[0093] A thermal management system according to an embodiment of the utility model includes: a compressor according to any one of the above embodiments.

[0094] According to the thermal management system of the embodiment of the utility model, the overall performance of the thermal management system is excellent.

[0095] The utility model further provides a vehicle.

[0096] The vehicle according to an embodiment of the utility model includes: a balancing weight 1 according to any of the above embodiments; or a rotor assembly 100 according to any of the above embodiments; or a motor according to any of the above embodiments; or a compressor according to any of the above embodiments; or a thermal management system according to any of the above embodiments.

[0097] The vehicle according to the embodiment of the utility model has excellent overall performance and high user satisfaction.

[0098] 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 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0099] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0100] In the description of the present invention, "plurality" means two or more.

[0101] 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 directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0102] In the description of the present invention, a first feature “above”, “over” 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.

[0103] In the description of this specification, the description with reference to the terms "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 the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0104] 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 spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A balancing weight (1) of a rotor assembly, the balancing weight (1) being mounted to a rotor core (2) of the rotor assembly (100), characterized in that: In the thickness direction (L1), the balancing block (1) comprises a mounting surface (11) and a flow guide surface (12), the mounting surface (11) being suitable for being mounted on the rotor core (2), the flow guide surface (12) and the mounting surface (11) being arranged opposite to each other and the flow guide surface (12) being formed into an arc-shaped surface; wherein: In the length direction (L2), the thickness of the balancing block (1) first gradually increases and then gradually decreases.

2. The balancing weight (1) of the rotor assembly according to claim 1, characterized in that: On a cross section parallel to the thickness direction (L1) and the length direction (L2), one end of the guide surface (12) is defined as a positioning end point (12a), and a positioning line (13) parallel to the mounting surface (11) is provided through the positioning end point (12a); In the length direction (L2), the positioning line (13) is provided with the center of a first positioning circle (141), the center of a second positioning circle (142), and the center of a third positioning circle (143) which are sequentially spaced apart, the first positioning circle (141), the second positioning circle (142), and the third positioning circle (143) are respectively tangent to the guide surface (12), and the first positioning circle (141) is tangent to the positioning end point (12a); The diameter of the second positioning circle (142) is greater than the diameter of the third positioning circle (143), and the diameter of the third positioning circle (143) is greater than the diameter of the first positioning circle (141).

3. The balancing weight (1) of the rotor assembly according to claim 2, characterized in that: The projection length of the guide surface (12) on the positioning line (13) is c, the distance and diameter between the center of the first positioning circle (141) and the positioning end point (12a) are both c0, the distance between the center of the second positioning circle (142) and the positioning end point (12a) is c1 and the diameter is D1, the distance between the center of the third positioning circle (143) and the positioning end point (12a) is c2 and the diameter is D2, and the balancing block (1) satisfies at least one of the following conditions: 0.05c≤c0≤0.055c, 0.29c≤c1≤0.31c, 0.17c≤D1≤0.18c, 0.59c≤c2≤0.61c, 0.13c≤D2≤0.14c.

4. The balancing weight (1) of the rotor assembly according to claim 3, characterized in that: It is defined that the other end of the guide surface (12) forms a track endpoint (12b), and the distance between the track endpoint (12b) and the positioning line (13) is h1, which satisfies: 0.08mm≤h1≤0.09mm.

5. The balancing weight (1) of the rotor assembly according to claim 4, characterized in that: Satisfies: 0.085mm≤h1≤0.09mm.

6. The balancing weight (1) of the rotor assembly according to claim 1, characterized in that: The two ends of the flow guide surface (12) are directly connected to the two ends of the mounting surface (11) respectively.

7. The balancing weight (1) of the rotor assembly according to claim 1, characterized in that: The two ends of the flow guide surface (12) are directly connected to the two ends of the mounting surface (11) via transition surfaces (16).

8. The balancing weight (1) of the rotor assembly according to claim 7, characterized in that: In the thickness direction (L1), the height of the transition surface (16) is h0, satisfying: 0mm<h0≤8mm.

9. The balancing weight (1) of the rotor assembly according to claim 7, characterized in that: Satisfies: 4mm<h0≤8mm.

10. The balancing weight (1) of a rotor assembly according to any one of claims 1 to 9, characterized in that: A plane parallel to the mounting surface (11) is defined as a projection surface, The outer peripheral wall of the orthographic projection of the balancing block (1) comprises a first arcuate surface (191) and a second arcuate surface (192) which are arranged opposite to each other, and the balancing block (1) is arranged in radial symmetry.

11. The balancing weight (1) of the rotor assembly according to claim 10, characterized in that: The first arcuate surface (191) and the second arcuate surface (192) are spaced apart in the width direction (L3), and both ends of the first arcuate surface (191) and both ends of the second arcuate surface (192) are connected via a third arcuate surface (193).

12. The balancing weight (1) of the rotor assembly according to claim 11, characterized in that: A circle that is tangent to and concentric with the third arc-shaped surface (193) is defined as a fourth positioning circle (151); A circle that is tangent to the first arcuate surface (191) and the second arcuate surface (192) and is concentric with the geometric center of the balancing weight (1) is defined as a fifth positioning circle (152); a positioning circle located between the fourth positioning circle (151) and the fifth positioning circle (152) is defined as a sixth positioning circle (153); the sixth positioning circle (153) is tangent to the first arcuate surface (191) and the second arcuate surface (192) respectively; In the length direction (L2), the maximum length of the balancing block (1) is c, the diameter of the fourth positioning circle (151) is d1, the distance between the center of the fifth positioning circle (152) and the center of the fourth positioning circle (151) along the length direction is w1 and the diameter is d2, the distance between the center of the sixth positioning circle and the center of the fourth positioning circle (151) along the length direction is w2 and the diameter is d3, and the balancing block (1) satisfies at least one of the following conditions: 0.15c≤d1≤0.16c, 0.24c≤d2≤0.25c, 0.3c≤d3≤0.31c, 0.42c≤w1≤0.43c, 0.24c≤w2≤0.25c.

13. A rotor assembly (100), characterized in that: include: A rotor core (2), wherein the rotor core (2) is formed with a coolant hole (21) extending therethrough in the axial direction; A balancing block (1), wherein the balancing block (1) is a balancing block (1) according to any one of claims 1 to 12, and a mounting surface (11) of the balancing block (1) is mounted to the rotor core (2).

14. A motor, characterized in that: include: The rotor assembly (100) according to claim 13.

15. A compressor, characterized in that: include: A motor as claimed in claim 14.

16. A thermal management system, characterized in that: include: A compressor according to claim 15.

17. A vehicle, characterized in that: include: The balancing weight (1) according to any one of claims 1 to 12; or, the rotor assembly (100) according to claim 13; or, the motor according to claim 14; or, The compressor of claim 15; or, the thermal management system of claim 16.

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