Rotor assembly, motor, actuator and vehicle

Abstract

The invention relates to the field of motors, and provides a rotor assembly, a motor, an actuator and a vehicle, the rotor assembly is provided with a first type working medium flow channel and a second type working medium flow channel which are mutually independent; wherein at least parts of the first type working medium flow channel and the second type working medium flow channel extend in the axial direction of the rotor assembly, and the first type working medium flow channel and the second type working medium flow channel are used for containing a magnetic body and allowing a heat exchange working medium to flow. According to the technical scheme, the magnetic bodies are arranged in the first-class working medium flow channel and the second-class working medium flow channel of the rotor iron core, and the first-class working medium flow channel and the second-class working medium flow channel are used for allowing the heat exchange working medium to flow, so that the rotor iron core and the magnetic bodies of the rotor assembly are cooled; the cooling effect can be ensured without arranging more cooling channels, and the rigidity of the rotor assembly can be ensured, so that the stability of the operation of the motor is ensured, and the effects of simplifying the structure of the rotor assembly and improving the dynamic balance performance are realized.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a rotor assembly, a stator assembly, a motor, an actuator, and a vehicle. Background Art

[0002] The rotor, along with the stator core to which the coils are fixed, forms the motor. The rotor core is a cylindrical body that holds magnets and has a rotor shaft at its center.

[0003] In the related art, during the cooling process of the motor, cooling channels are opened on the rotor core to cool the motor components, such as the rotor, magnets and stator. Usually, the number of cooling channels is positively correlated with the cooling effect. However, excessive setting of the number of cooling channels will affect the stiffness of the rotor core, and thus affect the overall operating stability of the motor. Summary of the Invention

[0004] The embodiments of the present application provide a rotor assembly, a motor, an actuator, and a vehicle, which ensure the stability of the motor operation while ensuring a partial cooling effect on the motor, so as to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned object, according to a first aspect of the present application, a rotor assembly is provided, wherein the rotor assembly is provided with a first type of working fluid flow channel and a second type of working fluid flow channel which are independent of each other;

[0006] The first type of working fluid flow channel and the second type of working fluid flow channel both extend at least partially along the axial direction of the rotor assembly, and are both used to accommodate magnetic bodies and provide heat exchange working fluid for flow.

[0007] Optionally, the flow directions of the heat exchange medium defined by two adjacent flow channels of the first type of working medium are set differently; and / or

[0008] The flow directions of the heat exchange working medium defined by two adjacent second-type working medium flow channels are set differently.

[0009] Optionally, the flow directions of the heat exchange working medium defined by two adjacent first-type working medium flow channels are arranged in opposite directions;

[0010] and / or

[0011] The flow directions of the heat exchange working medium defined by two adjacent second-type working medium flow channels are arranged in opposite directions.

[0012] Optionally, the rotor assembly further comprises:

[0013] The guide is used to introduce the heat exchange medium into the first type of working medium flow channel and the second type of working medium flow channel or to lead the heat exchange medium out of the first type of working medium flow channel and the second type of working medium flow channel to the stator winding.

[0014] Optionally, the rotor assembly has a central axis;

[0015] Along the central axis, a guide member is provided at both ends of the central axis.

[0016] Optionally, at least a portion of the guide member covers the first type of working fluid flow channel and the second type of working fluid flow channel of the rotor core along the radial direction of the rotor core, so that the heat exchange working fluid is introduced into or led out of the first type of working fluid flow channel and the second type of working fluid flow channel respectively along the guide member.

[0017] Optionally, the guide member is provided with:

[0018] an oil inlet channel, distributed on the radial surface of the guide member around the central axis;

[0019] The oil inlet flow channel is connected to the first type of working medium flow channel or the second type of working medium flow channel, so that the heat exchange working medium is introduced into the first type of working medium flow channel and the second type of working medium flow channel correspondingly connected to the oil inlet flow channel.

[0020] Optionally, the oil inlet channel includes:

[0021] The main flow section is used to receive the heat exchange medium;

[0022] A sub-flow section, used for introducing the heat exchange medium in the main flow section into the first type of working medium flow channel or the second type of working medium flow channel;

[0023] The sub-flow segments are distributed on the radial surface of the guide member along the path of the main flow segment.

[0024] Optionally, the main flow section defines a flow direction for the heat exchange medium to pass through, and the flow direction is perpendicular to or inclined to the central axis.

[0025] Optionally, along a projection plane perpendicular to the central axis, the projection of the main flow segment is completely staggered from the projection of the first type of working fluid flow channel and the projection of the second type of working fluid flow channel, so that the main flow segment is connected with the first type of working fluid flow channel and the second type of working fluid flow channel through the sub-flow segment.

[0026] Optionally, the sub-flow segment comprises a first sub-flow segment and a second sub-flow segment which are arranged in a radial direction of the guide member and are in communication with each other;

[0027] The first sub-flow segment is connected to the first type of working fluid flow channel, and the second sub-flow segment is connected to the second type of working fluid flow channel, so that the heat exchange working fluid is introduced into the first type of working fluid flow channel along the first sub-flow segment and introduced into the second type of working fluid flow channel along the second sub-flow segment.

[0028] Optionally, along a projection plane perpendicular to the central axis, the projection of the first type of working fluid flow channel falls within the projection of the first sub-flow segment; and / or the projection of the second type of working fluid flow channel falls within the projection of the second sub-flow segment.

[0029] Optionally, the guide member is further provided with:

[0030] An oil outlet channel is isolated from the oil inlet channel;

[0031] The oil outlet flow channel is configured to communicate with the first type of working fluid flow channel and the second type of working fluid flow channel respectively, so that the heat exchange working fluid is respectively led out from the first type of working fluid flow channel and the second type of working fluid flow channel.

[0032] Optionally, along the projection plane perpendicular to the central axis, the projection of the first type of working fluid flow channel falls within the projection of the oil outlet flow channel; and / or the projection of the second type of working fluid flow channel falls within the projection of the oil outlet flow channel.

[0033] Optionally, the oil inlet flow channel and the oil outlet flow channel are arranged on the guide member at intervals along the circumference of the guide member; or, the oil outlet flow channel and the oil inlet flow channel are distributed on both sides of the plane where the central axis is located.

[0034] Optionally, the oil outlet channel includes:

[0035] a first type of oil outlet flow channel, configured to communicate with the first type of working fluid flow channel;

[0036] a second type of oil outlet flow channel, configured to communicate with the second type of working fluid flow channel;

[0037] The first type of oil outlet flow channel and the second type of oil outlet flow channel are separately arranged at different positions on the radial surface of the rotor core.

[0038] Optionally, the first type of oil outlet channel and / or the second type of oil outlet channel is a groove structure formed on the guide member;

[0039] And / or, the oil inlet channel is a groove structure formed on the guide member.

[0040] Optionally, the guide member further comprises:

[0041] A guide flow channel, configured to be in communication with the oil outlet flow channel;

[0042] The guide flow channel is arranged to penetrate the guide member so that the heat exchange medium flows out from the oil outlet flow channel along a preset direction defined by the guide flow channel.

[0043] Optionally, the wire flow channel includes:

[0044] a first type of guide flow channel, communicating with the first type of oil outlet flow channel;

[0045] a second type of guide flow channel, communicating with the second type of oil outlet flow channel;

[0046] The first type of guide flow channel defines a first type of outflow direction for the heat exchange medium to pass through, and the first type of outflow direction is arranged parallel to the central axis, so that the heat exchange medium flowing out of the first type of oil outlet flow channel flows out in a direction parallel to the central axis;

[0047] The second type of guide flow channel defines a second type of outflow direction for the heat exchange medium to pass through, and the second type of outflow direction is arranged perpendicular to or inclined to the central axis so that the heat exchange medium flowing out of the second type of oil outlet flow channel flows out in a direction perpendicular to or parallel to the central axis.

[0048] Optionally, the rotor assembly further comprises:

[0049] a reversing member, configured to at least change the outflow direction of the heat exchange medium flowing out of the first type of guide flow channel;

[0050] Wherein, a commutator is provided at both ends of the central axis, and the guide is located between the rotor core and the commutator.

[0051] Optionally, the switching element has:

[0052] a reversing flow channel, configured to communicate with at least the first type of guide flow channel;

[0053] The reversing flow channel has a reversing outlet, and the reversing outlet defines a reversing direction for the heat exchange medium to flow through, and the reversing direction is perpendicular or inclined to the central axis.

[0054] Optionally, the rotor assembly further comprises:

[0055] A rotating shaft having a central oil passage;

[0056] The central oil passage is configured to communicate with the oil inlet passage, so that the central oil passage is in communication with the first type of working fluid passage and the second type of working fluid passage through the oil inlet passage.

[0057] Optionally, the guide member and / or the reversing member are arranged around the rotating shaft.

[0058] According to a second aspect of the present application, a motor is provided, comprising the rotor assembly as described above or the stator assembly as described above.

[0059] According to a third aspect of the present application, an actuator is provided, comprising a first component and a second component, wherein the first component and the second component rotate relative to each other along the axial direction of the actuator, one of the first component and the second component comprises the rotor component as described above, and the other of the first component and the second component comprises a stator component.

[0060] According to a fourth aspect of the present application, a vehicle is provided, comprising the rotor assembly as described above, the stator assembly as described above, the motor as described above, or the actuator as described above.

[0061] The beneficial effect of the present application is that it provides a rotor assembly that ensures the stability of the motor operation while ensuring a partial cooling effect on the motor.

[0062] More specifically, some embodiments of the present application may produce the following specific beneficial effects:

[0063] In the rotor assembly of the embodiment of the present application, the rotor assembly is provided with a first type of working fluid flow channel and a second type of working fluid flow channel that are independent of each other; wherein, the first type of working fluid flow channel and the second type of working fluid flow channel both extend at least partially along the axial direction of the rotor assembly, and the first type of working fluid flow channel and the second type of working fluid flow channel are both used to accommodate magnetic bodies and to supply heat exchange working fluids. Through the above technical solution, magnetic bodies are provided in the first type of working fluid flow channel and the second type of working fluid flow channel of the rotor core, and the first type of working fluid flow channel and the second type of working fluid flow channel can be used to supply heat exchange working fluids to cool the rotor core and the magnetic bodies of the rotor assembly. The cooling effect can be ensured without opening a large number of cooling channels, and the rigidity of the rotor assembly can be ensured, thereby ensuring the stability of the motor operation, thereby achieving the effect of simplifying the structure of the rotor assembly and improving the dynamic balancing performance.

[0064] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0066] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0067] Figure 1 is a schematic diagram of the overall structure of a rotor assembly provided in an exemplary embodiment of the present application;

[0068] Figure 2 is an internal cross-sectional view of a rotor assembly provided in an exemplary embodiment of the present application;

[0069] Figure 3 is a schematic diagram of an exploded structure of a rotor assembly provided in an exemplary embodiment of the present application;

[0070] Figure 4 is a schematic structural diagram of a guide member provided in an exemplary embodiment of the present application;

[0071] Figure 5 2. It is a structural schematic diagram of a guide member provided in an exemplary embodiment of the present application, in which a first type of guide flow channel and a first type of oil outlet flow channel are provided;

[0072] Figure 6 1 is a schematic cross-sectional structural diagram of a guide member provided in an exemplary embodiment of the present application, in which a guide channel, an oil inlet channel, and an oil outlet channel are provided;

[0073] Figure 7 yes Figure 6 Schematic diagram of the assembly cross-section structure of the guide member and the reversing member provided in;

[0074] Figure 8 yes Figure 7 A in the middle is an enlarged structural diagram;

[0075] Figure 9 is another schematic diagram of an assembled cross-sectional structure of a guide member and a reversing member provided in an exemplary embodiment of the present application;

[0076] Figure 10 yes Figure 9 The enlarged structural diagram at B in the middle;

[0077] Figure 11 1 is a schematic diagram of an assembly cross-sectional structure of a guide member and a reversing member provided in an exemplary embodiment of the present application at another angle;

[0078] Figure 12 yes Figure 11 The enlarged structural diagram at C in the middle;

[0079] Figure 13 is a schematic diagram of an assembly cross-sectional structure of a guide member and a reversing member at another angle provided in an exemplary embodiment of the present application;

[0080] Figure 14 is a schematic cross-sectional structural diagram of a rotor assembly provided in an exemplary embodiment of the present application from another angle;

[0081] Figure 15 2 is a schematic structural diagram of a vehicle provided in an exemplary embodiment of the present application.

[0082] Description of reference numerals:

[0083] 10. Rotor assembly; 10a. Central axis;

[0084] 100, rotor core; 100a, first type of working fluid flow channel; 100b, second type of working fluid flow channel;

[0085] 200, magnetic body;

[0086] 300, guide;

[0087] 30a, oil inlet channel; 30a1, main flow section;

[0088] 30a2, sub-flow segment; 30a21, first sub-flow segment; 30a22, second sub-flow segment;

[0089] 30b, oil outlet channel; 30b1, first type oil outlet channel; 30b2, second type oil outlet channel;

[0090] 30c, guide channel; 30c1, first type guide channel;

[0091] 30c2, second type of guide channel; 30c21, first section; 30c22, second section;

[0092] 400, reversing member; 40a, reversing flow channel; 40b, reversing outlet;

[0093] 500, rotating shaft; 50a, central oil channel; 50a1, main central flow channel; 50a2, sub-central flow channel;

[0094] F1, first type outflow direction; F2, second type outflow direction; F3, reversing direction;

[0095] 1. Vehicle. DETAILED DESCRIPTION

[0096] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0097] According to the first aspect of this application, reference Figures 1 to 3 , provides a rotor assembly 10, the rotor assembly 10 is provided with a first type of working fluid flow channel and a second type of working fluid flow channel that are independent of each other; wherein, the first type of working fluid flow channel and the second type of working fluid flow channel both extend at least partially along the axial direction of the rotor assembly, and the first type of working fluid flow channel and the second type of working fluid flow channel are both used to accommodate magnetic bodies and provide heat exchange working fluid for flow.

[0098] Through the above technical solution, a magnetic body 200 is arranged in the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b of the rotor core 100, and the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b can be used to allow the heat exchange working fluid to flow, so as to effectively cool the rotor core 100 and the magnetic body 200 of the rotor assembly 10. At the same time, the cooling effect can be ensured without opening a large number of cooling channels, and the rigidity of the rotor assembly 10 can be ensured, thereby ensuring the stability of the motor operation.

[0099] Exemplarily, the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b both pass through the axial ends of the rotor core 100, the magnetic body 200 is arranged in the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b, and the outer wall surface of the magnetic body 200 is spaced apart from the inner wall surface of the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b.

[0100] The first and second working medium flow channels 100a, 100b are located at different radial positions of the rotor core 100 to receive heat exchange medium respectively, and allow the heat exchange medium to flow independently in the first and second working medium flow channels 100a, 100b along the central axis 10a.

[0101] At the same time, the heat exchange medium flows independently in the first type of working medium flow channel 100a and the second type of working medium flow channel 100b along the central axis 10a, avoiding mixing of the heat exchange medium and ensuring stable flow of the heat exchange medium.

[0102] In some embodiments, reference Figures 1 to 3 The flow directions of the heat exchange medium defined by the two adjacent first-type working medium flow channels 100a are set differently.

[0103] By arranging the flow directions of the heat exchange medium defined in two adjacent first-type medium flow channels 100 a to be different, the rotor core 100 can be cooled in multiple directions, thereby improving the cooling uniformity of the rotor core 100 .

[0104] In some embodiments, reference Figures 1 to 3 The flow directions of the heat exchange working medium defined by the two adjacent second-type working medium flow channels 100b are set differently.

[0105] By arranging the flow directions of the heat exchange medium in two adjacent second-type medium flow channels 100 b to be different, the rotor core 100 can be cooled in multiple directions, thereby improving the cooling uniformity of the rotor core 100 .

[0106] In some embodiments, reference Figures 1 to 3 The flow directions of the heat exchange working medium defined by the two adjacent first-type working medium flow channels 100a are set in opposite directions.

[0107] The heat exchange medium defined by the two adjacent first-type working medium flow channels 100a has opposite flow directions, so that the heat exchange medium in the first-type working medium flow channels 100a of the rotor core 100 has opposite flow directions, thereby further improving the cooling effect on the rotor core 100 and the magnetic body 200.

[0108] In some other embodiments, the flow directions of the heat exchange medium defined by two adjacent second-type working medium flow channels 100b may be set to be opposite.

[0109] By arranging the heat exchange medium in two adjacent second-type working medium flow channels 100b in opposite directions, the heat exchange medium in the second-type working medium flow channels 100b of the rotor core 100 has opposite flow directions, thereby further improving the cooling effect on the rotor core 100 and the magnetic body 200.

[0110] It should be noted that, since the flow directions of the heat exchange working fluids in the two adjacent first-type working fluid flow channels 100a and the second-type working fluid flow channels 100b are set in opposite directions, the heat exchange working fluids in the first-type working fluid flow channels 100a and the second-type working fluid flow channels 100b can flow from one end of the rotor core 100 to the other end or from the other end to one end along the axial direction of the rotor core 100, thereby enabling the heat exchange working fluids at both ends of the rotor core 100 to gradually heat up when flowing in the flow channels at a lower temperature, thereby avoiding the problem that the heat exchange working fluid only flows from one end of the rotor core 100 to the other end along the axial direction of the rotor core 100, and when it flows to the other end, the temperature of the heat exchange working fluid has increased, thereby reducing the cooling effect on the rotor core 100 and the magnetic body 200.

[0111] In the present application, the flow directions of the heat exchange medium in the first type of working medium flow channels 100a and the second type of working medium flow channels 100b of the same group are set to be the same, while the flow directions of the heat exchange medium in two adjacent first type of working medium flow channels 100a are set to be opposite.

[0112] That is, heat exchange working medium can be introduced into different groups of first-type working medium flow channels 100a and second-type working medium flow channels 100b at both ends of the rotor core 100, so that the flow directions of the heat exchange working medium in the first-type working medium flow channels 100a and the second-type working medium flow channels 100b of the same group are set to the same, while the flow directions of the heat exchange working medium in two adjacent first-type working medium flow channels 100a are opposite.

[0113] The flow direction of the heat exchange medium in the first type of working medium flow channel 100 a and the second type of working medium flow channel 100 b is arranged parallel to the axial direction of the rotor core 100 .

[0114] It is worth noting that the flow directions of the heat exchange working fluid defined by two adjacent first-type working fluid flow channels 100a and the flow directions of the heat exchange working fluid defined by two adjacent second-type working fluid flow channels 100b can be set oppositely and can be selected and combined accordingly. For example, only the flow directions of the heat exchange working fluid defined by two adjacent first-type working fluid flow channels 100a can be set oppositely, or only the flow directions of the heat exchange working fluid defined by two adjacent second-type working fluid flow channels 100b can be set oppositely. Alternatively, the flow directions of the heat exchange working fluid defined by two adjacent first-type working fluid flow channels 100a and the flow directions of the heat exchange working fluid defined by two adjacent second-type working fluid flow channels 100b can be set oppositely at the same time.

[0115] refer to Figure 4 and Figure 6 The first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b are regarded as a group of working fluid flow channels, and all the working fluid flow channels are distributed on the rotor core 100 around the axial direction of the rotor core 100, that is, all the working fluid flow channels are distributed on the rotor core 100 along the circumferential direction of the rotor core 100, and the length direction of the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b are arranged parallel to the axial direction of the rotor core 100.

[0116] For example, refer to Figure 3 , the first type of working fluid flow channels 100a and the second type of working fluid flow channels 100b can be respectively set to multiple, and the multiple first type working fluid flow channels 100a and the multiple second type working fluid flow channels 100b of the same group are arranged in opposite directions around the axial direction of the rotor core 100. It can be understood that the distribution center of the multiple first type working fluid flow channels 100a of the same group and the center of the rotor core 100 are located on both sides of the multiple first type working fluid flow channels 100a. Similarly, the distribution center of the multiple second type working fluid flow channels 100b of the same group and the center of the rotor core 100 are located on both sides of the multiple second type working fluid flow channels 100b.

[0117] At this time, the plurality of first-type working medium flow passages 100 a in the same group may be arranged closer to the center of the rotor core 100 relative to the second-type working medium flow passages 100 b in the same group.

[0118] In this application, reference Figure 3 , the cross-sectional areas of the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b can be set differently, for example, the cross-sectional area of the second type of working fluid flow channel 100b can be smaller than the cross-sectional area of the first type of working fluid flow channel 100a.

[0119] Moreover, the intervals between the inner wall surfaces of the first and second working fluid flow channels 100a, 100b and the outer wall surfaces of the magnetic body 200 can be arranged in an irregular arc shape, so that the regular magnetic body 200 can be stably placed in the first and second working fluid flow channels 100a, 100b.

[0120] At the same time, the cross-sectional areas of the plurality of first-type working fluid flow channels 100a in the same group may be set to be different, and the cross-sectional areas of the plurality of second-type working fluid flow channels 100b in the same group may also be set to be different.

[0121] In some embodiments, reference Figure 3 、 Figure 4 Figure 5 and Figure 6 The rotor assembly 10 further includes a guide member 300 .

[0122] The guide 300 is used to introduce the heat exchange medium into the first and second working medium flow channels 100a and 100b or to lead the heat exchange medium out of the first and second working medium flow channels 100a and 100b to the stator winding.

[0123] By providing the guide member 300, the heat exchange medium can be more efficiently introduced into or led out of the first type of working medium flow channel 100a and the second type of working medium flow channel 100b, and the rotor core 100 and the magnetic body 200 can be effectively cooled. At the same time, the heat exchange medium led out from the first type of working medium flow channel 100a and the second type of working medium flow channel 100b can also be sprayed onto the stator winding, thereby cooling the stator winding and ensuring the overall cooling effect of the motor.

[0124] In some embodiments, reference Figure 3 The rotor assembly 10 has a central axis 10 a , and a guide member 300 is provided at both axial ends of the rotor core 100 along the central axis 10 a .

[0125] By providing a guide 300 at both axial ends of the rotor core 100 , heat exchange media with different flow directions can be introduced into or led out of the first type of working medium flow channel 100 a and the second type of working medium flow channel 100 b .

[0126] In some embodiments, reference Figure 1 and Figure 2 At least a portion of the guide member 300 covers the first type of working medium flow channel 100a and the second type of working medium flow channel 100b of the rotor core 100 along the radial direction of the rotor core 100, so that the heat exchange working medium is introduced into or out of the first type of working medium flow channel 100a and the second type of working medium flow channel 100b respectively along the guide member 300.

[0127] By at least partially covering the first type of working medium flow channel 100a and the second type of working medium flow channel 100b of the rotor core 100 along the radial direction of the rotor core 100, it can be ensured that the heat exchange working medium is introduced into or out of the first type of working medium flow channel 100a and the second type of working medium flow channel 100b respectively along the guide member 300.

[0128] Exemplarily, the guide member 300 is provided as a plate-shaped structure, and the outer diameter of the guide member 300 is set to be the same as the outer diameter of the rotor core 100 .

[0129] In some embodiments, reference Figures 4 to 7 The guide member 300 is provided with an oil inlet passage 30a.

[0130] The oil inlet channel 30a is distributed on the radial surface of the guide member 300 around the central axis 10a, wherein the oil inlet channel 30a is connected to the first type of working medium channel 100a or the second type of working medium channel 100b, so that the heat exchange working medium is introduced into the first type of working medium channel 100a and the second type of working medium channel 100b respectively.

[0131] For example, when the guide member 300 is adapted to be installed at both ends of the rotor core 100, the oil inlet channel 30a is connected to the first type of working fluid channel 100a and the second type of working fluid channel 100b respectively, so that the heat exchange medium can be introduced into the first type of working fluid channel 100a and the second type of working fluid channel 100b.

[0132] In some embodiments, reference Figure 4 The oil inlet channel 30a includes a main flow section 30a1 and a sub-flow section 30a2.

[0133] The main flow section 30a1 is used to receive the heat exchange medium, and the sub-flow section 30a2 is used to introduce the heat exchange medium in the main flow section 30a1 into the first type of working medium flow channel 100a or the second type of working medium flow channel 100b, wherein the sub-flow section 30a2 is distributed on the radial surface of the guide 300 along the path of the main flow section 30a1.

[0134] By providing the main flow section 30a1 and the sub-flow section 30a2, the heat exchange medium can be better guided to enter the oil, ensuring that the heat exchange medium is stably introduced into the first type of working medium flow channel 100a or the second type of working medium flow channel 100b.

[0135] In some embodiments, reference Figure 5 、 Figure 6 The main flow section 30a1 defines a flow direction for the heat exchange medium to pass through, and the flow direction is perpendicular or inclined to the central axis 10a.

[0136] For example, refer to Figure 6 The flow direction is set perpendicular to the central axis 10a to reduce the flow path between the main flow section 30a1 and the first type of working medium flow channel 100a or the second type of working medium flow channel 100b.

[0137] Of course, when the flow direction is inclined with respect to the central axis 10a, the flow path of the heat exchange medium can be increased, thereby improving the cooling effect to a certain extent.

[0138] In some embodiments, reference Figure 3 and Figure 4 Along the projection plane perpendicular to the central axis 10a, the projection of the main flow segment 30a1 is completely staggered with the projection of the first type of working fluid flow channel 100a and the projection of the second type of working fluid flow channel 100b, so that the main flow segment 30a1 is connected with the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b through the sub-flow segment 30a2.

[0139] Through the projection plane perpendicular to the central axis 10a, the projection of the main flow section 30a1 and the projection of the first type of working fluid flow channel 100a and the projection of the second type of working fluid flow channel 100b are completely staggered, so that the main flow section 30a1 can only be connected with the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b through the sub-flow section, avoiding the heat exchange working fluid in the main flow section 30a1 from flowing into the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b through the sub-flow section, thereby ensuring that the heat exchange working fluid flows stably into the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b.

[0140] In some embodiments, reference Figure 4 The sub-flow segment 30a2 includes a first sub-flow segment 30a21 and a second sub-flow segment 30a22 which are arranged along the radial direction of the guide member 300 and are connected.

[0141] Among them, the first sub-flow segment 30a21 is connected to the first type of working fluid flow channel 100a, and the second sub-flow segment 30a22 is connected to the second type of working fluid flow channel 100b, so that the heat exchange working fluid is introduced into the first type of working fluid flow channel 100a along the first sub-flow segment 30a21, and introduced into the second type of working fluid flow channel 100b along the second sub-flow segment 30a22.

[0142] Exemplarily, the first sub-stream segment 30 a 21 and the second sub-stream segment 30 a 22 both bend and extend toward the outer circumference of the rotor core 100 .

[0143] In some embodiments, along the projection plane perpendicular to the central axis 10a, the projection of the first type of working fluid flow channel 100a falls within the projection of the first sub-flow segment 30a21; and / or, the projection of the second type of working fluid flow channel 100b falls within the projection of the second sub-flow segment 30a22.

[0144] Along the projection plane perpendicular to the central axis 10a, the projection of the first type of working fluid flow channel 100a falls within the projection of the first sub-flow segment 30a21, and the projection of the second type of working fluid flow channel 100b falls within the projection of the second sub-flow segment 30a22, so that the heat exchange working fluid can only flow into the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b along the first sub-flow segment 30a21 and the second sub-flow segment 30a22 respectively. This setting method can ensure the sealing of the overall structure when the oil is introduced, and avoid oil leakage.

[0145] In some embodiments, reference Figure 4 The guide member 300 is further provided with an oil outlet channel 30b.

[0146] The oil outlet channel 30b is isolated from the oil inlet channel, wherein the oil outlet channel 30b is configured to communicate with the first type of working fluid channel 100a and the second type of working fluid channel 100b respectively, so that the heat exchange working fluid is respectively drawn out from the first type of working fluid channel 100a and the second type of working fluid channel 100b.

[0147] An oil outlet channel 30b is also provided in the guide member 300, and the oil outlet channel 30b is configured to be isolated from the oil inlet channel 30a, and the oil outlet channel 30b is configured to be connected to the first type of working fluid channel 100a and the second type of working fluid channel 100b respectively, so that the heat exchange working fluid is respectively drawn out from the first type of working fluid channel 100a and the second type of working fluid channel 100b.

[0148] For example, when the oil outlet channel 30b and the oil inlet channel 30a are simultaneously provided on the guide member 300, the oil inlet channel 30a of the guide member 300 at one end of the rotor core 100 can be adapted and connected with the first type of working fluid channel 100a and the second type of working fluid channel 100b of the same group. At this time, the oil outlet channel 30b on the same guide member 300 is adapted and connected with the first type of working fluid channel 100a and the second type of working fluid channel 100b of another group. At this time, the oil outlet channel 30b of the guide member 300 at the other end of the rotor core 100 is adapted and connected with the first type of working fluid channel 100a and the second type of working fluid channel 100b of the same group. At this time, the oil inlet channel 30a on the same guide member 300 at the other end is adapted and connected with the first type of working fluid channel 100a and the second type of working fluid channel 100b of another group.

[0149] It can be understood that when a guide member 300 is provided at both ends of the rotor core 100, during installation, it is only necessary to rotate the guide member 300 relative to the rotor core 100 so that the oil inlet channel 30a and the oil outlet channel 30b located on the same guide member 300 can be adapted and connected to the first type of working fluid channel 100a and the second type of working fluid channel 100b respectively.

[0150] In some embodiments, along the projection plane perpendicular to the central axis 10a, the projection of the first type of working fluid flow channel 100a falls within the projection of the oil outlet flow channel 30b, and the projection of the second type of working fluid flow channel 100b falls within the projection of the oil outlet flow channel 30b.

[0151] Along the projection plane perpendicular to the central axis 10a, the projection of the first type of working fluid flow channel 100a falls within the projection of the oil outlet flow channel 30b, and the projection of the second type of working fluid flow channel 100b falls within the projection of the oil outlet flow channel 30b, ensuring that the heat exchange working fluid flowing out of the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b is stably introduced into the oil outlet flow channel 30b, ensuring the sealing of the overall structure when the oil is drawn out, and further avoiding oil leakage.

[0152] In some embodiments, the oil inlet channel 30a and the oil outlet channel 30b are arranged on the radial surface of the guide member 300 at intervals around the central axis 10a; or, the oil outlet channel 30b and the oil inlet channel 30a are arranged on the radial surface of the guide member 300 and distributed on both sides of the plane where the central axis 10a is located.

[0153] refer to Figure 4 The oil inlet channel 30a and the oil outlet channel 30b are spaced apart along the central axis 10a on the guide 300, which facilitates the setting of the oil inlet channel 30a and the oil outlet channel 30b, and the alignment of the channels can be achieved by rotating a small angle.

[0154] Of course, the oil outlet channel 30b and the oil inlet channel 30a can also be arranged on the radial surface of the guide member 300 and on both sides of the plane where the central axis 10a is located. The specific arrangement method shall be based on actual use.

[0155] It should be noted that the guide members 300 at both ends of the rotor core 100 may adopt the same arrangement of the oil outlet channel 30 b and the oil inlet channel 30 a , which is convenient for installation.

[0156] In some embodiments, reference Figure 5 、 Figure 6 、 Figures 8 to 13 The oil outlet flow channel 30b includes: a first type of oil outlet flow channel 30b1 and a second type of oil outlet flow channel 30b2.

[0157] The first type of oil outlet channel 30b1 is configured to communicate with the first type of working fluid channel 100a, and the second type of oil outlet channel 30b2 is configured to communicate with the second type of working fluid channel 100b, wherein the first type of oil outlet channel 30b1 and the second type of oil outlet channel 30b2 are isolated and arranged at different positions on the radial surface of the rotor core 100.

[0158] By dividing the oil outlet channel 30b into a first type of oil outlet channel 30b1 and a second type of oil outlet channel 30b2, it can be connected to the first type of working fluid channel 100a and the second type of working fluid channel 100b respectively, thereby forming a main stream section 30a1-first sub-flow section 30a21-first type of working fluid channel 100a-first type of oil outlet channel 30b1 loop and a main stream section 30a1-second sub-flow section 30a22-second type of working fluid channel 100b-second type of oil outlet channel 30b2 loop, thereby realizing the introduction or extraction of heat exchange medium in the two types of loops, thereby ensuring effective cooling of the rotor assembly 10.

[0159] Furthermore, in the rotor assembly 10 , the heat exchange working medium flows in two adjacent different groups of first-type working medium flow channels 100 a are arranged in opposite directions, which can further ensure the cooling effect.

[0160] In some embodiments, reference Figure 6 The first type of oil outlet channel 30b1 and the second type of oil outlet channel 30b2 are groove structures formed on the guide member 300, and the oil inlet channel 30a is a groove structure formed on the guide member 300.

[0161] By constructing the first type of oil outlet flow channel 30b1, the second type of oil outlet flow channel 30b2 and the oil inlet flow channel 30a as groove structures formed on the guide member 300, the forming method is simple and easy to operate.

[0162] Specifically, the guide member 300 includes a guide body, and the groove structure is a groove with a groove bottom. The groove is opened along the central axis 10a in the radial direction of the guide body, and the depth direction of the groove is arranged parallel to the central axis 10a. When the guide member 300 is adapted and installed at both ends of the central axis 10a, the first oil outlet channel 30b and the second type of oil outlet channel 30b2 and the oil inlet channel 30a are respectively adapted to the first type of working fluid channel 100a and the second type of working fluid channel 100b on the rotor core 100 to introduce or lead out the heat exchange working fluid.

[0163] Exemplarily, the first type of oil outlet channel 30b1 can be set as a groove structure similar to an isosceles trapezoid, and the heat exchange medium will be continuously drawn out from the first type of working medium channel 100a into the first type of oil outlet channel 30b1 and collected in the first type of oil outlet channel 30b1.

[0164] The groove structure of the second type oil outlet channel 30b2 is different from the groove structure of the first type oil outlet channel 30b1. For example, the second type oil outlet channel 30b2 can be set to be narrower to match the arrangement of the multiple second type working medium channels 100b.

[0165] In some embodiments, reference Figure 4 The guide member 300 further includes a guide flow channel 30c.

[0166] The guide channel 30c is configured to communicate with the oil outlet channel 30b, wherein the guide channel 30c penetrates the guide member 300 so that the heat exchange medium flows out from the oil outlet channel 30b along a preset direction defined by the guide channel 30c.

[0167] In order to better discharge the heat exchange medium that is led out from the first type of working medium flow channel 100a and the second type of working medium flow channel 100b to the oil outlet flow channel 30b, a guide flow channel 30c can be opened on the guide member 300, wherein the heat exchange medium located in the oil outlet flow channel 30b will flow out of the oil outlet flow channel 30b along the guide flow channel 30c in a preset direction defined by the guide flow channel 30c, thereby further improving the cooling effect, for example, the stator winding can be cooled.

[0168] In some embodiments, reference Figure 6 The guide flow channel 30c defines an outflow direction for the heat exchange medium to flow out, wherein the outflow direction is perpendicular, parallel, or inclined to the central axis 10a.

[0169] By utilizing the guide flow channel 30c to define an outflow direction for the heat exchange medium to flow out, and arranging the outflow direction of the heat exchange medium in the guide flow channel 30c perpendicularly, parallelly, or obliquely to the central axis 10a, the outflow direction in the guide flow channel 30c can be adapted to multiple positions, thereby effectively cooling multiple positions of the stator assembly.

[0170] In some embodiments, reference Figure 6 and Figure 8 The guide channel 30c includes: a first type of guide channel 30c1 and a second type of guide channel 30c2.

[0171] The first type of guide flow channel 30c1 is communicated with the first type of oil outlet flow channel 30b1, and the second type of guide flow channel 30c2 is communicated with the second type of oil outlet flow channel 30b2.

[0172] Among them, the first type of guide flow channel 30c1 has a first type of guide outlet, and the first type of guide outlet defines a first type of outflow direction F1 for the heat exchange medium to pass through. The first type of outflow direction F1 is arranged parallel to the central axis 10a, so that the heat exchange medium flowing out of the first type of oil outlet flow channel 30b1 flows out in a direction parallel to the central axis 10a.

[0173] Of course, reference Figure 9 and Figure 10The first type of outflow direction F1 can also be tilted along the central axis 10a, which can increase the distance between the center of the first type of guide outlet and the center of the guide member 300, so as to improve the path for the heat exchange medium to flow out along the first type of guide channel 30c1, further avoid the heat exchange medium from accumulating inside the first type of oil outlet channel 30b1, and thus ensure the dynamic balance of the rotor assembly 10.

[0174] Specifically, a first type of guide flow channel 30c1 can be opened at a position on the guide member 300 that is adapted to the first type of oil outlet flow channel 30b1. The aperture of the first type of guide flow channel 30c1 is set to be smaller, which can increase the oil pressure of the heat exchange medium when it flows out along the guide member 300, so that the heat exchange medium can be discharged from the first type of oil outlet flow channel 30b1 along the first type of guide flow channel 30c1 at a certain oil pressure.

[0175] refer to Figure 7 and Figure 8 The first type of guide channel 30c1 can be opened on the guide body along a direction parallel to the central axis 10a. For example, the first type of guide channel can be a through hole opened along a direction parallel to the central axis 10a. At this time, the first type of outflow direction F1 is set parallel to the central axis 10a.

[0176] It should be noted that the first type of guide flow channel 30c1 can be set at a position farthest from the axis of the guide member 300 in the first type of oil outlet flow channel 30b1.

[0177] Among them, reference Figure 11 and Figure 12 The second type of guide flow channel 30c2 defines a second type of outflow direction F2 for the heat exchange medium to pass through. The second type of outflow direction F2 is set perpendicularly or obliquely to the central axis 10a, so that the heat exchange medium flowing out of the second type of oil outlet flow channel 30b2 flows out in a direction perpendicular to or obliquely to the central axis 10a.

[0178] Specifically, the second type of guide flow channel 30c2 has a second type of guide outlet, and the second type of guide outlet defines a second type of outflow direction F2 for the heat exchange medium to pass through. The second type of outflow direction F2 is arranged perpendicular to the center axis 10a, so that the heat exchange medium flowing out of the second type of oil outlet flow channel 30b2 flows out in a direction perpendicular to the center axis 10a, that is, the heat exchange medium flowing out of the second type of oil outlet flow channel 30b2 can flow out in the radial direction of the rotor core 100 after entering the second type of guide flow channel 30c2, and can cool the stator winding, thereby further improving the cooling effect of the motor.

[0179] At this time, refer to Figure 13The second type of guide flow channel 30c2 includes a first section 30c21 and a second section 30c22, wherein the second section 30c22 has a second type of guide outlet, the first section 30c21 is a non-through hole opened along the central axis 10a, and the second section 30c22 is a through hole opened along the central axis 10a perpendicular to the central axis, and the head end of the second section 30c22 intersects with the tail end of the first section 30c21. The heat exchange medium is collected from the second type of working medium flow channel 100b into the second type of oil outlet flow channel 30b2, and flows to the first section 30c21 and the second section 30c22 in turn, and flows out along the second type of guide outlet of the second section 30c22. At this time, the flow direction of the heat exchange medium is changed from parallel to the central axis 10a to perpendicular to the central axis 10a, that is, it flows along the radial direction parallel to the rotor core 100, and then sprayed onto the stator winding to achieve cooling of the stator winding.

[0180] It should be noted that the second section 30c22 is a through hole opened perpendicular to the central axis 10a. At this time, the second type of guide outlet of the through hole is arranged in the circumference of the guide member 300, and the second type of guide flow channel 30c2 and the first type of guide flow channel 30c1 are located at different radial positions of the guide member 300.

[0181] For example, two second-type guide flow channels 30c2 may be provided in one second-type oil outlet flow channel 30b2, and one first-type guide flow channel 30c1 may be provided in one first-type oil outlet flow channel 30b1.

[0182] Of course, reference Figure 12 The second type of outflow direction F2 can also be tilted along the central axis 10a. At this time, the heat exchange medium passing through the first section 30c21 and the heat exchange medium passing through the second section 30c22 can be in the same direction, and there is no need to reverse the heat exchange medium in the second type of guide channel 30c2, thereby avoiding the loss of oil pressure of the heat exchange medium.

[0183] Specifically, a second type of guide flow channel 30c2 can be opened on the guide member 300 at a position adapted to the second type of oil outlet flow channel 30b2, and the aperture of the second type of guide flow channel 30c2 can be set to be smaller so as to increase the oil pressure of the heat exchange medium when it flows out along the guide member 300, so that the heat exchange medium can be discharged from the second type of oil outlet flow channel 30b2 along the second type of guide flow channel 30c2 at a certain oil pressure.

[0184] In some embodiments, reference Figures 1 to 8 The rotor assembly 10 further includes a commutator 400 , with a commutator 400 disposed at both axial ends of the rotor core 100 .

[0185] The guide member 300 is located between the rotor core 100 and the commutator 400 , and the commutator 400 is used to at least change the outflow direction of the heat exchange medium flowing out of the first type of guide flow channel 30c1 .

[0186] By locating the guide 300 between the rotor core 100 and the commutator 400 , that is, arranging the commutator 400 on the side of the guide 300 away from the rotor core 100 , the commutator 400 is used to change the outflow direction of the heat exchange medium flowing out of the first type guide channel.

[0187] In some embodiments, reference Figure 8 、 Figure 10 The reversing member 400 includes a reversing flow channel 40a.

[0188] The reversing flow channel 40a is configured to communicate with the first type guide flow channel 30c1.

[0189] The reversing flow channel 40a has a reversing outlet 40b, which defines a reversing direction F3 for the heat exchange medium to flow through. The reversing direction F3 is perpendicular or inclined to the central axis 10a.

[0190] By setting the reversing direction F3 defined by the reversing outlet 40b to be perpendicular and tilted to the central axis 10a, the direction of the heat exchange medium flowing out of the first type guide flow channel 30c1 can be changed.

[0191] Among them, the heat exchange medium flowing out of the first type of guide flow channel 30c1 is switched from a direction parallel to or inclined to the central axis 10a to a direction perpendicular to the central axis 10a, that is, after the heat exchange medium enters the reversing flow channel 40a, the reversing flow channel 40a is switched from a direction parallel to or inclined to the central axis 10a to the radial direction of the rotor core 100, so that the heat exchange medium can be sprayed onto the stator winding and flows in the radial direction at a certain oil pressure. It can also avoid spraying the heat exchange medium onto the terminal of the stator assembly, which may cause the terminal of the stator assembly to short-circuit under the spraying of the heat exchange medium, thereby further ensuring the overall operating stability of the rotor assembly 10.

[0192] It should be noted that the heat exchange medium in the oil inlet channel 30a, the guide channel 30c and the reversing channel are all subject to the centrifugal force generated during the rotation of the rotor core 100. Under the action of the centrifugal force, the heat exchange medium in the oil inlet channel 30a, the guide channel 30c and the reversing channel will move away from the central axis 10a and flow out along the reversing channel, that is, the heat exchange medium will be thrown out of the rotor assembly 10.

[0193] Specifically, a through hole may be opened on the switching member 400 , and the through hole may pass through the circumference of the switching member 400 .

[0194] In some embodiments, reference Figure 2 and Figure 14 The rotor assembly 10 further includes: a rotating shaft 500 .

[0195] The rotating shaft 500 has a central oil passage 50a, wherein the central oil passage 50a is configured to communicate with the oil inlet passage 30a, so that the central oil passage 50a is in communication with the first type of working medium passage 100a and the second type of working medium passage 100b through the oil inlet passage 30a.

[0196] By providing a central oil passage 50a on the rotating shaft 500, the heat exchange medium is introduced into the oil inlet channel 30a through the central oil passage 50a, and then introduced into the first type of working medium flow channel 100a and the second type of working medium flow channel 100b for circulation. This setting method does not require the addition of additional components to set up an oil passage connected to the oil inlet channel 30a, thereby simplifying the overall structure of the rotor assembly 10.

[0197] Exemplarily, the central flow channel includes a main central flow channel 50a1 and multiple sub-central flow channels 50a2, wherein the main central flow channel 50a1 is opened on the rotating shaft 500 along the central axis 10a, and the sub-central flow channel 50a2 is opened on the rotating shaft 500 along the radial direction of the rotor core 100 and can be connected with the oil inlet flow channel 30a, and then circulate with the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b.

[0198] The sub-center oil channel 50a can be an elongated through hole opened on the rotating shaft 500, and after the guide member 300 is adapted and installed on the rotating shaft 500, each sub-center oil channel 50a is connected to the main flow section 30a1 of the oil inlet channel 30a, so that the heat exchange medium can enter the sub-center oil channel 50a along the main center oil channel 50a and enter the first sub-flow section 30a21 and the second sub-flow section 30a22 along the main flow section 30a1 of the oil inlet channel 30a respectively, thereby entering the first type of working medium flow channel 100a and the second type of working medium flow channel 100b respectively, completing the introduction of the heat exchange medium.

[0199] Wherein, sub-center oil passages 50 a may be provided on the guide members 300 at both ends of the rotating shaft 500 corresponding to the center axis 10 a , and the sub-center oil passages 50 a may be adapted to the oil inlet passages 30 a .

[0200] When assembling the guide member 300, the rotating shaft 500, the rotor core 100 and the commutator 400, the oil inlet channel 30a and the oil outlet channel 30b of the guide member 300 are arranged corresponding to the first type of working fluid flow channel 100a and the second type of working fluid flow channel 100b of the rotor core 100. At the same time, the reversing flow channel 40a of the commutator 400 and the guide channel of the guide member 300 are also adapted to avoid blockage of the oil circuit.

[0201] In some embodiments, the guide member 300 and / or the diverter member 400 are disposed around the rotating shaft 500 .

[0202] By arranging the guide member 300 and / or the reversing member 400 around the rotating shaft 500 , during the rotation of the rotating shaft 500 , the guide member 300 and the reversing member 400 also rotate synchronously with the rotating shaft 500 , thereby further ensuring operational stability.

[0203] refer to Figure 2 In the present application, after the rotor assembly 10 is assembled, the central axis 10a of the rotor assembly 10, the central axis 10a of the rotor core 100, the central axis 10a of the guide 300, the central axis 10a of the rotating shaft 500, and the central axis 10a of the commutator 400 are all arranged in a collinear manner. In the present application, a central axis 10a is used as a reference for the direction, and the axial direction of the rotor core 100, the axial direction of the guide 300, the axial direction of the rotating shaft 500, and the axial direction of the commutator 400 are all directions extending along the central axis 10a.

[0204] According to a second aspect of the present application, a motor is provided, comprising the rotor assembly 10 as described above.

[0205] The motor includes the above-mentioned rotor assembly 10 and thus has all the beneficial effects of the above-mentioned rotor assembly 10 , which will not be described in detail in this application.

[0206] In some embodiments, the electric machine further includes a stator assembly including stator windings.

[0207] After the stator assembly is used in conjunction with the rotor assembly 10 , the heat exchange medium flowing out of the rotor assembly 10 can be used to spray-cool the stator winding, thereby ensuring stable operation of the stator assembly.

[0208] According to a third aspect of the present application, an actuator is provided, comprising a first component and a second component, wherein the first component and the second component rotate relative to each other along the axial direction of the actuator, one of the first component and the second component comprises the rotor component 10 as described above, and the other of the first component and the second component comprises a stator component.

[0209] The actuator includes the above-mentioned rotor assembly 10 or stator assembly, and thus has all the beneficial effects of the above-mentioned rotor assembly 10 or the above-mentioned stator assembly, which will not be described in detail in this application.

[0210] According to the fourth aspect of this application, reference Figure 15 , a vehicle 1 is provided, comprising a rotor assembly 10 as described above, or a stator assembly as described above, or a motor as described above, or an actuator as described above.

[0211] The vehicle 1 includes the above-mentioned rotor assembly 10 or the above-mentioned stator assembly or the above-mentioned motor or the above-mentioned actuator, and therefore has all the beneficial effects of the above-mentioned rotor assembly 10 or the above-mentioned motor or the above-mentioned actuator, which will not be repeated in this application.

[0212] The vehicle 1 may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and this application does not make any specific limitation on this.

[0213] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0214] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0215] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0216] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A rotor assembly, characterized in that: The rotor assembly is provided with a first type of working fluid flow passage and a second type of working fluid flow passage that are independent of each other; The first type of working fluid flow channel and the second type of working fluid flow channel both extend at least partially along the axial direction of the rotor assembly, and are both used to accommodate magnetic bodies and provide heat exchange working fluid for flow.

2. The rotor assembly according to claim 1, wherein: The flow directions of the heat exchange medium defined by two adjacent flow channels of the first type of working medium are arranged in different directions; and / or The flow directions of the heat exchange working medium defined by two adjacent second-type working medium flow channels are set differently.

3. The rotor assembly according to claim 2, wherein: The flow directions of the heat exchange working medium defined by two adjacent flow channels of the first type of working medium are arranged in opposite directions; and / or The flow directions of the heat exchange working medium defined by two adjacent second-type working medium flow channels are arranged in opposite directions.

4. The rotor assembly according to any one of claims 1 to 3, characterized in that: Also includes: The guide is used to introduce the heat exchange medium into the first type of working medium flow channel and the second type of working medium flow channel or to lead the heat exchange medium out of the first type of working medium flow channel and the second type of working medium flow channel to the stator winding.

5. The rotor assembly according to claim 4, wherein: The rotor assembly has a central axis; Along the central axis, a guide member is provided at both ends of the central axis.

6. The rotor assembly according to claim 4, wherein: At least a portion of the guide member covers the first and second working medium flow channels of the rotor core in the radial direction of the rotor core, so that the heat exchange medium is introduced into or led out of the first and second working medium flow channels respectively along the guide member.

7. The rotor assembly according to claim 4, wherein: The guide member is provided with: an oil inlet channel, distributed on the radial surface of the guide member around the central axis; The oil inlet flow channel is connected to the first type of working medium flow channel or the second type of working medium flow channel, so that the heat exchange working medium is introduced into the first type of working medium flow channel and the second type of working medium flow channel correspondingly connected to the oil inlet flow channel.

8. The rotor assembly according to claim 7, wherein: The oil inlet flow channel includes: The main flow section is used to receive the heat exchange medium; A sub-flow section, used for introducing the heat exchange medium in the main flow section into the first type of working medium flow channel or the second type of working medium flow channel; The sub-flow segments are distributed on the radial surface of the guide member along the path of the main flow segment.

9. The rotor assembly according to claim 8, wherein: The main flow section defines a flow direction for the heat exchange medium to pass through, and the flow direction is perpendicular to or inclined to the central axis.

10. The rotor assembly according to claim 8, wherein: Along a projection plane perpendicular to the central axis, the projection of the main flow segment is completely staggered from the projection of the first type of working fluid flow channel and the projection of the second type of working fluid flow channel, so that the main flow segment is connected with the first type of working fluid flow channel and the second type of working fluid flow channel through the sub-flow segment.

11. The rotor assembly according to claim 8, wherein: The sub-flow segment includes a first sub-flow segment and a second sub-flow segment that are connected; The first sub-flow segment is connected to the first type of working fluid flow channel, and the second sub-flow segment is connected to the second type of working fluid flow channel, so that the heat exchange working fluid is introduced into the first type of working fluid flow channel along the first sub-flow segment and introduced into the second type of working fluid flow channel along the second sub-flow segment.

12. The rotor assembly according to claim 11, wherein: Along the projection plane perpendicular to the central axis, the projection of the first type of working fluid flow channel falls within the projection of the first sub-flow segment; and / or the projection of the second type of working fluid flow channel falls within the projection of the second sub-flow segment.

13. The rotor assembly according to claim 7, wherein: The guide is further provided with: An oil outlet channel is isolated from the oil inlet channel; The oil outlet flow channel is configured to communicate with the first type of working fluid flow channel and the second type of working fluid flow channel respectively, so that the heat exchange working fluid is respectively led out from the first type of working fluid flow channel and the second type of working fluid flow channel.

14. The rotor assembly according to claim 13, wherein: Along the projection plane perpendicular to the central axis, the projection of the first type of working fluid flow channel falls within the projection of the oil outlet flow channel; and / or the projection of the second type of working fluid flow channel falls within the projection of the oil outlet flow channel.

15. The rotor assembly according to claim 13, wherein: The oil inlet channel and the oil outlet channel are arranged at intervals around the central axis on the radial surface of the guide member; or, the oil outlet channel and the oil inlet channel are arranged on the radial surface of the guide member and distributed on both sides of the plane where the central axis is located.

16. The rotor assembly according to claim 13, wherein: The oil outlet channel comprises: a first type of oil outlet flow channel, configured to communicate with the first type of working fluid flow channel; a second type of oil outlet flow channel, configured to communicate with the second type of working fluid flow channel; The first type of oil outlet flow channel and the second type of oil outlet flow channel are separately arranged at different positions on the radial surface of the guide member.

17. The rotor assembly according to claim 16, wherein: The first type of oil outlet channel and / or the second type of oil outlet channel is a groove structure formed on the guide member; And / or, the oil inlet channel is a groove structure formed on the guide member.

18. The rotor assembly according to claim 16, wherein: The guide also has: A guide flow channel, configured to be in communication with the oil outlet flow channel; The guide flow channel is arranged to penetrate the guide member so that the heat exchange medium flows out from the oil outlet flow channel along a preset direction defined by the guide flow channel.

19. The rotor assembly according to claim 18, wherein: The guide flow channel includes: a first type of guide flow channel, communicating with the first type of oil outlet flow channel; a second type of guide flow channel, communicating with the second type of oil outlet flow channel; The first type of guide flow channel defines a first type of outflow direction for the heat exchange medium to pass through, and the first type of outflow direction is arranged parallel to the central axis, so that the heat exchange medium flowing out of the first type of oil outlet flow channel flows out in a direction parallel to the central axis; The second type of guide flow channel defines a second type of outflow direction for the heat exchange medium to pass through, and the second type of outflow direction is arranged perpendicular to or inclined to the central axis so that the heat exchange medium flowing out of the second type of oil outlet flow channel flows out in a direction perpendicular to or parallel to the central axis.

20. The rotor assembly according to claim 19, wherein: Also includes: a reversing member, configured to at least change the outflow direction of the heat exchange medium flowing out of the first type of guide flow channel; Wherein, a commutator is provided at both ends of the central axis, and the guide is located between the rotor core and the commutator.

21. The rotor assembly according to claim 20, wherein: The switching element has: a reversing flow channel, configured to communicate with at least the first type of guide flow channel; The reversing flow channel has a reversing outlet, and the reversing outlet defines a reversing direction for the heat exchange medium to flow through, and the reversing direction is perpendicular or inclined to the central axis.

22. The rotor assembly according to claim 21, wherein: Also includes: A rotating shaft having a central oil passage; The central oil passage is configured to communicate with the oil inlet passage, so that the central oil passage is in communication with the first type of working fluid passage and the second type of working fluid passage through the oil inlet passage.

23. The rotor assembly according to claim 22, wherein: The guide element and / or the reversing element are arranged around the rotating shaft.

24. A motor, characterized in that: The rotor assembly comprises a rotor assembly according to any one of claims 1 to 23.

25. An actuator, characterized in that: The actuator comprises a first component and a second component, wherein the first component and the second component rotate relative to each other along the axial direction of the actuator, one of the first component and the second component comprises the rotor assembly according to any one of claims 1 to 23, and the other of the first component and the second component comprises a stator assembly.

26. A vehicle, characterized in that: The invention comprises a rotor assembly according to any one of claims 1 to 23, a motor according to claim 24, or an actuator according to claim 25.

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