Integrated electric drive device and vehicle

Abstract

The present invention discloses an integrated electric drive device and a vehicle, wherein the integrated electric drive device comprises: a housing, wherein the housing is provided with a storage space; a speed gear assembly, wherein the speed gear assembly is provided in the storage space; a stator and a rotor, wherein the stator and the rotor are provided in the storage space, wherein the stator has a stator winding, wherein the stator winding has a winding end located outside the stator, and the rotor is rotatably provided on the rotor, wherein the rotor is connected to the speed gear assembly, and under the action of the stator winding, the rotor is suitable for driving the speed gear assembly to work; and a medium circulation assembly, wherein the medium circulation assembly has a collecting port and a first spraying port, wherein the collecting port is used for the first cooling medium in the storage space, and guides the first cooling medium to the first spraying port, wherein the first spraying port at least partially corresponds to the winding end, so as to spray the first cooling medium onto the winding end. By providing the first spraying port corresponding to the winding end, the present invention increases the probability of the first cooling medium contacting the winding end, thereby improving the cooling effect.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to an integrated electric drive device and a vehicle. Background Art

[0002] In the related art, vehicles use oil-cooled hybrid drive motors, and some oil-cooled hybrid drive motors are cooled by both oil cooling and water cooling. The stator and rotor structures in the oil-cooled hybrid drive motor are complex, and the stator has a winding structure. The cooling oil cools the winding structure by splashing, and the cooling effect is poor. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an integrated electric drive device with improved cooling effect.

[0004] According to an embodiment of the present invention, an integrated electric drive device comprises: a housing, the housing is provided with a storage space; a speed change gear assembly, the speed change gear assembly is arranged in the storage space; a stator and a rotor, the stator and the rotor are arranged in the storage space, the stator has a stator winding, the stator winding has a winding end located outside the stator, the rotor is rotatably arranged in the housing, the rotor is connected to the speed change gear assembly, and under the action of the stator winding, the rotor is suitable for driving the speed change gear assembly to work; a medium circulation assembly, the medium circulation assembly The component comprises: a collecting component, which is arranged at the bottom of the accommodating space, and the collecting component is provided with a collecting port for collecting a first cooling medium; a first spray pipe, the first spray port is arranged on the first spray pipe, and the first spray pipe is provided with a first spray port, and the first spray port at least partially corresponds to the winding end, so as to spray the first cooling medium onto the winding end; a power pump, one end of the power pump is connected to the collecting component, and the other end is connected to the first spray pipe, so as to guide the first cooling medium collected by the collecting component to the first spray pipe.

[0005] According to the integrated electric drive device of the embodiment of the present invention, by setting the first spray port corresponding to the winding end, the first cooling medium is directly sprayed onto the winding end, and the first cooling medium directly contacts the winding end, thereby increasing the probability that the first cooling medium contacts the winding end, making the cooling effect more stable, and improving the cooling effect, thereby improving the overall effect of the integrated electric drive device, and a collection port is set to recycle the first cooling medium, and the first cooling medium is repeatedly recycled, thereby improving the utilization rate, and a first spray pipe is set at the same time, and the first spray pipe is easy to install and disassemble, so that the integrated electric drive device is adaptable to a variety of cooling schemes, thereby improving applicability.

[0006] In some embodiments, in the axial direction of the stator, the first spray pipe is arranged on the side of the winding end away from the stator, the first spray pipe is constructed in an arc shape and extends along the circumferential direction of the stator, and there are multiple first spray openings, and the multiple first spray openings are arranged at intervals along the circumferential direction of the stator.

[0007] In some embodiments, the stator has a horizontal plane, the horizontal plane passes through the center line of the stator, and the first spray pipe is arranged above the horizontal plane.

[0008] In some embodiments, the medium circulation assembly further includes: a cooling pipe, the inner wall of the shell is provided with a mounting portion, the cooling pipe is provided at the mounting portion, and the cooling pipe is connected to the power pump to guide the first cooling medium to the cooling pipe.

[0009] In some embodiments, the mounting portion is configured as a mounting groove, the mounting groove extends along a circumferential direction of the stator, and in an axial direction of the stator, the mounting groove is spaced apart from the winding end.

[0010] In some embodiments, the shell is provided with a water jacket portion, the water jacket portion has a water inlet, and the water inlet is used to input a second cooling medium into the water jacket portion; wherein the water jacket portion surrounds the stator, the cooling pipe is provided on a side of the water jacket portion facing the stator, and the cooling pipe is adjacent to the water jacket portion.

[0011] In some embodiments, a medium recovery guide is provided under the stator, the medium recovery guide extends toward the collecting member, the medium recovery guide is provided on a side of the water jacket portion facing the stator, and the medium recovery guide is adjacent to the water jacket portion.

[0012] In some embodiments, the first cooling medium is configured as a cooling lubricating medium, and the medium circulation component also includes: a second spray pipe, the second spray pipe is arranged in the accommodating space, and the second spray pipe is at least partially arranged above the speed change gear assembly, and the second spray pipe is provided with a second spray port corresponding to the speed change gear assembly, and the second spray pipe is connected to the power pump to guide the cooling lubricating medium to the second spray pipe.

[0013] In some embodiments, the medium circulation component also includes: a first heat sink, wherein the inlet of the first heat sink is connected to the power pump; a filter, wherein the inlet of the filter is connected to the first heat sink; a connecting pipe, wherein the inlet of the connecting pipe is connected to the filter; a control valve, wherein the control valve has a first discharge port and a second discharge port, wherein the second discharge port is connected to the second spray pipe, and the inlet of the control valve is connected to the connecting pipe; a distribution pipe, wherein one end of the distribution pipe is connected to the first discharge port, and the distribution pipe is also connected to the first spray pipe, and a plurality of third spray ports are provided on the distribution pipe.

[0014] A vehicle according to an embodiment of the present invention includes the above-mentioned integrated electric drive device.

[0015] According to the vehicle of the embodiment of the present invention, by setting the first spray port corresponding to the winding end, the first cooling medium is directly sprayed onto the winding end, and the first cooling medium directly contacts the winding end, which increases the probability that the first cooling medium contacts the winding end, making the cooling effect more stable, and improving the cooling effect, thereby improving the overall effect of the integrated electric drive device. In addition, a collection port is set to recycle the first cooling medium, and the first cooling medium is repeatedly recycled, thereby improving the utilization rate. At the same time, a first spray pipe is set, and the first spray pipe is easy to install and disassemble, so that the integrated electric drive device is adapted to a variety of cooling schemes, thereby improving applicability.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 Schematic diagram of an integrated electric drive device in an embodiment of the present invention Figure 1 ;

[0019] Figure 2 Schematic diagram of an integrated electric drive device in an embodiment of the present invention Figure 2 ;

[0020] Figure 3 Schematic diagram of an integrated electric drive device in an embodiment of the present invention Figure 3 ;

[0021] Figure 4 Schematic diagram of an integrated electric drive device in an embodiment of the present invention Figure 4 ;

[0022] Figure 5 Schematic diagram of a first heat sink and a second heat sink in an embodiment of the present invention.

[0023] Reference numerals:

[0024] 100. Integrated electric drive device;

[0025] 12. Water jacket; 121. Water inlet; 122. Water outlet; 123. Second heat sink; 124. Water pump;

[0026] 20. Speed ​​change gear assembly; 30. Stator; 311. Winding end; 40. Rotor;

[0027] 50. Medium circulation component; 51. First spray pipe; 511. First spray port; 512. Distribution pipe; 513. Third spray port; 52. Collecting element; 53. Power pump; 54. Cooling pipe; 55. Second spray pipe; 551. Second spray port; 552. Reinforcement part; 56. First heat sink; 57. Filter element; 58. Connecting pipe; 59. Control valve; 60. Medium recovery guide. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which 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.

[0029] 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 limiting the present invention.

[0030] In addition, features defined as “first” or “second” may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without any distinction in order or importance.

[0031] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The integrated electric drive device 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0034] Reference Figure 1 According to an embodiment of the present invention, an integrated electric drive device 100 includes: a housing, a speed change gear assembly 20, a stator 30, a rotor 40 and a medium circulation assembly 50.

[0035] The housing is provided with a storage space. The speed change gear assembly 20 is provided in the storage space. The stator 30 and the rotor 40 are provided in the storage space. The stator 30 has a stator winding, and the stator winding has a winding end 311 located outside the stator 30. The rotor 40 is rotatably provided on the rotor 40. The rotor 40 is connected to the speed change gear assembly 20. Under the action of the stator winding, the rotor 40 is suitable for driving the speed change gear set to work. The medium circulation assembly 50 has a collection port and a first spray port 511. The collection port is used to accommodate the first cooling medium in the space and guide the first cooling medium to the first spray port 511. The first spray port 511 at least partially corresponds to the winding end 311 to spray the first cooling medium onto the winding end 311.

[0036] Specifically, the medium circulation assembly 50 includes: a collecting member 52 , a first spraying pipeline 51 and a power pump 53 .

[0037] The collecting member 52 is disposed at the bottom of the accommodation space, and the collecting port is disposed on the collecting member 52. The first spray port 511 is disposed on the first spray pipe 51. The power pump 53 is connected to the collecting member 52 and the first spray pipe 51 respectively to guide the first cooling medium collected by the collecting member 52 to the first spray pipe 51.

[0038] Among them, the speed gear assembly 20, the stator 30 and the rotor 40 are all located in the accommodating space. The stator 30 is provided with a stator winding, which generates a magnetic field. Under the action of the magnetic field, the rotor 40 rotates. The rotor 40 is connected to the speed gear assembly 20. The speed gear assembly 20 includes multiple gears. The output power of the speed gear assembly 20 is adjusted by adjusting the gear ratio.

[0039] The stator winding is arranged on the stator 30 , part of the stator winding is located inside the stator 30 , and another part of the stator winding is located outside the stator 30 , and the winding end 311 is outside the stator 30 .

[0040] The power pump 53 provides power for the first cooling medium, so that the first cooling medium flows and can be pumped to a higher position. In addition, the first spray pipe 51 is independent of the housing, and the first spray pipe 51 can be installed or not.

[0041] In the related art, the vehicle uses an oil-cooled hybrid drive motor. The stator and rotor structures in the oil-cooled hybrid drive motor are complex, and the stator has a winding structure. The cooling oil cools the winding structure by splashing, and the cooling effect is poor.

[0042] In the embodiment of the present invention, by setting a first spray port 511 corresponding to the winding end 311, the first cooling medium is sprayed directly onto the winding end 311 to avoid the winding end 311 being unable to contact the first cooling medium. The first cooling medium fully contacts the winding end 311, and the first cooling medium fully cools the winding end 311, thereby improving the cooling effect and improving the overall effect of the integrated electric drive device 100.

[0043] The first cooling medium may be a coolant mixed with ethylene glycol and water, or oil may be used as the cooling medium. Oil as the cooling medium can play a lubricating role while cooling.

[0044] Among them, the medium circulation component 50 is also provided with a collecting port, which is arranged in the accommodating space. The collecting port collects the first cooling medium in the accommodating space. It can be understood that the first cooling medium sprayed on the winding end 311 will drip from the winding end 311. The collecting port recovers the first cooling medium and recycles the first cooling medium, thereby improving the utilization rate.

[0045] In the above solution, by setting the collecting member 52 at the bottom of the accommodation space, it can be understood that the first cooling medium falls to the bottom of the accommodation space under the influence of its own gravity, and the collecting member 52 can collect the first cooling medium more conveniently, thereby improving efficiency. At the same time, the first spray pipe 51 is independent of the shell, and if the first spray pipe 51 is not installed, the stator 30 and the rotor 40 can be cooled by a separate water cooling method. If the first spray pipe 51 is installed, combined with the water cooling method, the composite cooling solution is applicable to various working conditions.

[0046] Specifically, the cooling method selects an independent water cooling or a compound cooling solution. Correspondingly, in the independent water cooling solution, the bearing used to position the stator 30 is a self-lubricating bearing, and in the compound cooling solution, the bearing used to position the stator 30 is a strong self-lubricating bearing.

[0047] According to the integrated electric drive device 100 of the embodiment of the present invention, by setting the first spray port 511 corresponding to the winding end 311, the first cooling medium is directly sprayed onto the winding end 311, and the first cooling medium directly contacts the winding end 311, thereby increasing the probability that the first cooling medium contacts the winding end 311, making the cooling effect more stable, and improving the cooling effect, thereby improving the overall effect of the integrated electric drive device 100, and setting a collection port to recycle the first cooling medium, repeatedly recycling the first cooling medium, thereby improving the utilization rate, and at the same time, a first spray pipe 51 is provided, and the first spray pipe 51 is easy to install and disassemble, so that the integrated electric drive device 100 is adapted to a variety of cooling schemes, thereby improving applicability.

[0048] Reference Figures 1 to 4 In some specific embodiments, there are multiple first spray pipes 51, and the multiple first spray pipes 51 are arranged at both ends of the axial direction of the stator 30. The multiple first spray pipes 51 are commonly connected to a distribution pipe 512, and the distribution pipe 512 is connected to a power pump 53 to guide the first cooling medium to the multiple first spray pipes 51.

[0049] In the above scheme, multiple first spray pipes 51 are provided to spray the winding ends 311 at both ends of the stator 30 respectively, so as to fully cool the winding ends 311, thereby further improving the cooling effect. At the same time, the first spray pipes 51 and the distribution pipes 512 are pipes independent of the housing, and the housing in the related art does not need to be modified. The present invention can be realized by adding the first spray pipes 51 and the distribution pipes 512. The rotor 40 and the stator 30 do not need to be specially developed, thereby reducing the cost.

[0050] Specifically, the distribution pipe 512 is disposed at one side of the stator 30 , and a plurality of third spray ports 513 are disposed on the distribution pipe 512 to spray the first cooling medium on the stator 30 , thereby increasing the spray cooling range compared to the solution of providing one spray port.

[0051] In some embodiments, in the axial direction of the stator 30, the first spray pipe 51 is arranged on the side of the winding end 311 away from the stator 30, the first spray pipe 51 is constructed in an arc shape and extends along the circumferential direction of the stator 30, and there are multiple first spray ports 511, and the multiple first spray ports 511 are arranged at intervals along the circumferential direction of the stator 30.

[0052] In the above scheme, by setting a first spray pipe 51 extending along the circumferential direction of the stator 30, multiple first spray ports 511 are arranged at intervals along the circumferential direction of the stator 30, and the multiple first spray ports 511 all correspond to the winding end 311, thereby increasing the cooling range and improving the cooling effect. The first spray pipe 51 is arranged on the side of the winding end 311 away from the stator 30, which facilitates spraying.

[0053] Reference Figures 1 to 4 In some specific embodiments, the first spray pipe 51 is constructed in an arc shape and extends along the circumferential direction of the stator 30. The first spray pipe 51 is arranged on the side of the winding end 311 facing the speed change gear assembly 20. The first spray port 511 is arranged on the side of the first spray pipe 51 facing the winding end 311. There are multiple first spray ports 511, and the multiple first spray ports 511 are arranged at intervals along the circumferential direction of the stator 30.

[0054] Among them, there are multiple first spray openings 511, the first spray pipe 51 has a certain length, the multiple first spray openings 511 are arranged at intervals along the extension direction of the first spray pipe 51, the first spray pipe 51 extends along the circumferential direction of the stator 30, and the multiple first spray openings 511 all correspond to the winding end 311.

[0055] In the above scheme, by setting a first spray pipe 51 extending along the circumferential direction of the stator 30, multiple first spray ports 511 are arranged at intervals along the circumferential direction of the stator 30, and the multiple first spray ports 511 all correspond to the winding end 311, thereby increasing the cooling range and improving the cooling effect.

[0056] Specifically, the first spray pipe 51 can be annular, and the annular first spray pipe 51 corresponds to the entire winding end 311. Multiple first spray ports 511 can spray the first cooling medium to the entire winding end 311, further improving the cooling range; or, the first spray pipe 51 can also be semi-arc-shaped, and the first spray pipe 51 corresponds to part of the winding end 311.

[0057] For example, the speed change gear assembly 20 is located on the left side of the stator 30 , the first spray pipe 51 is disposed on the left side of the stator 30 , the right side of the first spray pipe 51 is provided with a first spray port 511 , and the first spray port 511 faces the winding end 311 on the right side.

[0058] Reference Figures 1 to 4 In some specific embodiments, the first spray pipe 51 is constructed in an arc shape and extends along the circumferential direction of the stator 30. The first spray pipe 51 is arranged on the side of the winding end 311 facing away from the speed change gear assembly 20. The first spray port 511 is arranged on the side of the first spray pipe 51 facing the winding end 311. There are multiple first spray ports 511, and the multiple first spray ports 511 are arranged at intervals along the circumferential direction of the stator 30.

[0059] Among them, there are multiple first spray openings 511, the first spray pipe 51 has a certain length, the multiple first spray openings 511 are arranged at intervals along the extension direction of the first spray pipe 51, the first spray pipe 51 extends along the circumferential direction of the stator 30, and the multiple first spray openings 511 all correspond to the winding end 311.

[0060] In the above scheme, by setting a first spray pipe 51 extending along the circumferential direction of the stator 30, multiple first spray ports 511 are arranged at intervals along the circumferential direction of the stator 30, and the multiple first spray ports 511 all correspond to the winding end 311, thereby increasing the cooling range and improving the cooling effect.

[0061] Specifically, the first spray pipe 51 can be annular, and the annular first spray pipe 51 corresponds to the entire winding end 311. Multiple first spray ports 511 can spray the first cooling medium to the entire winding end 311, further improving the cooling range; or, the first spray pipe 51 can also be semi-arc-shaped, and the first spray pipe 51 corresponds to part of the winding end 311.

[0062] For example, the speed change gear assembly 20 is located on the left side of the stator 30, the first spray pipe 51 is arranged on the right side of the stator 30, and the first spray port 511 is arranged on the left side of the first spray pipe 51, and the first spray port 511 faces the winding end 311 on the left side.

[0063] Reference Figures 1 to 4 In some specific embodiments, the first spray pipe 51 is constructed in an arc shape and extends along the circumferential direction of the stator 30. The first spray pipe 51 is arranged on the side of the winding end 311 facing the speed gear assembly 20, and the first spray port 511 is arranged on the side of the first spray pipe 51 facing the winding end 311. There are multiple first spray ports 511, and the multiple first spray ports 511 are arranged at intervals along the circumferential direction of the stator 30. At the same time, the first spray pipe 51 is arranged on the side of the winding end 311 facing away from the speed gear assembly 20, and the first spray port 511 is arranged on the side of the first spray pipe 51 facing the winding end 311. There are multiple first spray ports 511, and the multiple first spray ports 511 are arranged at intervals along the circumferential direction of the stator 30.

[0064] Among them, there are multiple first spray pipes 51, and the multiple first spray pipes 51 are arranged on both sides of the stator 30 in the axial direction. The multiple first spray pipes 51 correspond to the winding ends 311 at both ends of the stator 30 respectively. There are multiple first spray ports 511 on the first spray pipe 51. The first spray pipe 51 has a certain length. The multiple first spray ports 511 are arranged at intervals along the extension direction of the first spray pipe 51. The first spray pipe 51 extends along the circumferential direction of the stator 30, and the multiple first spray ports 511 all correspond to the winding ends 311.

[0065] In the above scheme, by setting a first spray pipe 51 extending along the circumferential direction of the stator 30, multiple first spray ports 511 are arranged at intervals along the circumferential direction of the stator 30, and the multiple first spray ports 511 all correspond to the winding end 311, thereby increasing the cooling range and improving the cooling effect.

[0066] Specifically, the first spray pipe 51 can be annular, and the annular first spray pipe 51 corresponds to the entire winding end 311. Multiple first spray ports 511 can spray the first cooling medium to the entire winding end 311, further improving the cooling range; or, the first spray pipe 51 can also be semi-arc-shaped, and the first spray pipe 51 corresponds to part of the winding end 311.

[0067] For example, the speed change gear assembly 20 is located on the left side of the stator 30, and there are two first spray pipes 51, one of which is located on the left side of the stator 30, and a first spray port 511 is provided on the right side of the first spray pipe 51, and the first spray port 511 faces the winding end 311 on the right side; the other first spray pipe 51 is located on the right side of the stator 30, and a first spray port 511 is provided on the left side of the first spray pipe 51, and the first spray port 511 faces the winding end 311 on the left side.

[0068] Reference Figures 1 to 4 In some embodiments, the stator 30 has a horizontal plane, the horizontal plane passes through the center line of the stator 30, and the first spray pipe 51 is arranged above the horizontal plane.

[0069] The horizontal plane is a virtual plane, the center line of the stator 30 is located on the horizontal plane, and the entire first spray pipe 51 is located above the horizontal plane.

[0070] In the above scheme, the entire first spray pipe 51 is arranged above the horizontal plane, and the first cooling medium is sprayed to a position above the middle of the stator 30. It can be understood that under the action of its own gravity, the first cooling medium automatically flows to the bottom of the stator 30. The first spray pipe 51 is arranged above the horizontal plane, which avoids waste, optimizes the structure, and thus reduces costs.

[0071] Reference Figure 2 In some embodiments, the medium circulation component 50 further includes: a cooling pipe 54 , the inner wall of the shell is provided with a mounting portion, the cooling pipe 54 is provided at the mounting portion, and the cooling pipe 54 is connected to the power pump 53 to guide the first cooling medium to the cooling pipe 54 .

[0072] Among them, the inner wall of the shell is provided with a mounting portion, and the cooling pipe 54 is fixed on the mounting portion. A first cooling medium flows in the cooling pipe 54, and the flowing first cooling medium exchanges heat with surrounding components to reduce the temperature of the accommodation space. The stator 30 and the rotor 40 are also arranged in the accommodation space, and the cooling pipe cools the stator 30 and the rotor 40.

[0073] In the above solution, the cooling pipe 54 is provided to exchange heat with the stator 30 and the rotor 40 , and the stator 30 and the rotor 40 are fully cooled by the first cooling medium, thereby increasing the cooling range and improving the performance of the integrated electric drive device 100 .

[0074] Specifically, the cooling pipe 54 can be directly connected to the output port of the power pump 53, and the power pump 53 guides the first cooling medium to the cooling pipe 54, or it can be indirectly connected, for example, as described below, the power pump 53 is connected to the connecting pipe 58 and the distribution pipe 512, and the power pump 53 pumps the first cooling medium to the connecting pipe 58 and the distribution pipe 512, and then enters the cooling pipe 54.

[0075] Reference Figure 2 In some embodiments, the mounting portion is configured as a mounting groove, which extends along the circumferential direction of the stator 30 , and in the axial direction of the stator 30 , the mounting groove is spaced apart from the winding end 311 .

[0076] The cooling pipe 54 is fixed in the installation groove, which extends along the circumferential direction of the stator 30. The installation groove has a certain length, and the installation groove is spaced a certain distance from the winding ends 311 at both ends, and the installation groove corresponds to the middle position of the stator 30. At the same time, the installation groove is spaced from the winding ends 311, that is, the installation groove is different from the position where the winding ends 311 are located, and the installation groove corresponds to the middle position of the stator 30.

[0077] In the above scheme, by providing a mounting groove surrounding the stator 30 and being spaced a certain distance from the winding end 311, a local position of the stator 30 is directionally cooled. For example, the high-temperature position of the stator core is determined according to simulation analysis and experimental temperature measurement results, thereby improving the overall cooling effect.

[0078] Specifically, there are multiple mounting grooves, which are spaced apart along the axial direction of the stator 30, thereby further increasing the cooling range. For example, there are two mounting grooves, which are spaced apart along the left-right direction.

[0079] Reference Figure 3 In some embodiments, the housing is provided with a water jacket portion 12, and the water jacket portion 12 has a water inlet 121, and the water inlet 121 is used to input a second cooling medium into the water jacket portion 12. The water jacket portion 12 surrounds the stator 30, and the cooling pipe 54 is provided on a side of the water jacket portion 12 facing the stator 30, and the cooling pipe 54 is adjacent to the water jacket portion 12.

[0080] The housing is provided with a cavity structure, in which a second cooling medium flows, and the water jacket portion 12 is the above-mentioned cavity structure and the solid part around it, and the water jacket portion 12 extends along the circumferential direction of the stator 30, so that the water jacket portion 12 surrounds the stator 30, and the second cooling medium in the water jacket portion 12 cools the stator 30. At the same time, the cooling pipe 54 is adjacent to the water jacket portion 12, and the first cooling medium in the cooling pipe 54 and the second cooling medium in the water jacket portion 12 can exchange heat.

[0081] In the above scheme, by providing a water jacket portion 12 surrounding the stator 30, a cooling method is further added on the basis of the first cooling medium. For example, the first cooling medium is cooling oil and the second cooling medium is water. The integrated electric drive device 100 realizes a composite cooling scheme of oil cooling and water cooling. The scheme is flexible and diverse, and a cooling pipe 54 is provided adjacent to the water jacket portion 12, so that the first cooling medium and the second cooling medium can exchange heat, thereby improving uniformity and the overall cooling effect.

[0082] Specifically, the water jacket portion 12 surrounds the stator 30 , and the cooling pipe 54 is disposed inside the water jacket portion 12 .

[0083] Reference Figure 5 Specifically, the water jacket portion 12 also has a water outlet 122, which is used to connect to the second heat sink 123. The other end of the second heat sink 123 is connected to the water inlet 121. The second heat sink 123 is provided with a water pump 124 to pump the second cooling medium to the second heat sink 123.

[0084] Specifically, the second cooling medium may be a coolant mixed with ethylene glycol and water, and oil may also be used as the cooling medium.

[0085] Reference Figure 3 In some embodiments, a medium recovery guide 60 is provided under the stator 30 , and the medium recovery guide 60 extends in the direction of the collecting member 52 . The medium recovery guide 60 is provided on a side of the water jacket portion 12 facing the stator 30 , and the medium recovery guide 60 is adjacent to the water jacket portion 12 .

[0086] The medium recovery guide 60 is located below the stator 30 , and the first cooling medium falls onto the medium recovery guide 60 . The medium recovery guide 60 extends toward the collecting member 52 , and guides the recovered first cooling medium to the collecting member 52 .

[0087] In the above scheme, the medium recovery guide 60 is provided to recover the first cooling medium, thereby improving the utilization rate of the first cooling medium. The medium recovery guide 60 is adjacent to the water jacket portion 12, and the second cooling medium in the water jacket portion 12 is used to cool the first cooling medium, thereby improving temperature uniformity.

[0088] Specifically, the medium recovery guide 60 is constructed as a plate-shaped member, which is located inside the water jacket portion 12 . A guide groove is provided on the plate-shaped member, and the guide groove receives the dripping first cooling medium.

[0089] Reference Figure 4In some embodiments, the first cooling medium is configured as a cooling lubricating medium, and the medium circulation component 50 also includes: a second spray pipe 55, the second spray pipe 55 is arranged in the accommodating space, and the second spray pipe 55 is at least partially arranged above the speed gear assembly 20, and the second spray pipe 55 is provided with a second spray port 551 corresponding to the speed gear assembly 20, and the second spray pipe 55 is connected to the power pump 53 to guide the cooling lubricating medium to the second spray pipe 55.

[0090] Among them, the first cooling medium is a cooling lubricating medium, which not only has a cooling function but also a lubricating function. The second spray pipe 55 is connected to the power pump 53, and the power pump 53 pumps the first cooling medium into the second spray pipe 55. The second spray pipe 55 is located above the speed gear assembly 20, and a second spray port 551 is provided on the second spray pipe 55, so that the first cooling medium is sprayed onto the speed gear assembly 20.

[0091] In the above solution, the second spray pipe 55 is provided above the speed gear assembly 20 , and the cooling and lubricating medium is sprayed toward the speed gear assembly 20 by the second spray pipe 55 , so that the speed gear assembly 20 is fully cooled and lubricated.

[0092] Specifically, the second spray pipe 55 extends along the axial direction of the speed change gear assembly 20 , and there are a plurality of second spray ports 551 , which are arranged at intervals along the axial direction of the speed change gear assembly 20 .

[0093] Reference Figure 4 In some specific embodiments, a reinforcement portion 552 is provided on the second spray pipe 55 to increase the strength of the second spray pipe 55 and avoid breakage.

[0094] Reference Figure 4 In some specific embodiments, the collecting member 52 is disposed below the speed change gear assembly 20 , so that the collecting member 52 can collect the cooling lubricating medium conveniently.

[0095] Reference Figure 4 In some embodiments, the medium circulation assembly 50 further includes: a first heat dissipation element 56, a filter element 57, a connecting pipe 58, a control valve 59 and a distribution pipe.

[0096] The inlet of the first heat sink 56 is connected to the power pump 53. The inlet of the filter 57 is connected to the first heat sink 56. The inlet of the communication pipe 58 is connected to the filter 57. The control valve 59 has a first discharge port and a second discharge port, the second discharge port is connected to the second spray pipe 55, and the inlet of the control valve 59 is connected to the communication pipe 58. One end of the distribution pipe 512 is connected to the first discharge port, and the distribution pipe 512 is also connected to the first spray pipe 51, and a plurality of third spray ports 513 are provided on the distribution pipe 512.

[0097] The first heat sink 56 is used to dissipate heat of the first cooling medium, thereby reducing the temperature of the first cooling medium. The filter 57 is used to filter the first cooling medium and filter out impurities in the first cooling medium. The first cooling medium collected by the collector 52 flows to the control valve 59 after heat dissipation and filtration. The control valve 59 distributes the first cooling medium to the second spray pipe 55 or the distribution pipe 512, controls the flow of the first cooling medium, and adjusts the cooling effect of the rotor 40, the stator 30 and the speed change gear assembly 20.

[0098] Specifically, the filter element 57 is disposed above the power pump 53, the power pump 53 is adjacent to the collecting element 52, and the collecting element 52 is disposed below the filter element 57, so as to fully utilize the accommodation space and have a compact structure.

[0099] The first cooling medium circulation process is as follows: the collecting member 52 recovers the first cooling medium, the power pump 53 pumps the first cooling medium to the first heat sink 56, the first cooling medium after heat dissipation enters the filter 57, the first cooling medium after filtration enters the connecting pipe 58, the connecting pipe 58 transmits the first cooling medium to the control valve 59, the control valve 59 can distribute the first cooling medium to the second spray pipe 55, the second spray pipe 55 sprays the first cooling medium to the speed change gear assembly 20 through the second spray port 551, or the control valve 59 can also distribute the first cooling medium to the distribution pipe 512, the distribution pipe 512 divides the first cooling medium into three paths, the first path is sprayed to the winding end 311 through the first spray pipe 51, the second path is sprayed to the stator 30 and the rotor 40 through the third spray port 513, and the third path cools the stator 30 and the rotor 40 through the cooling pipe 54. Finally, the first cooling medium sprayed to the speed change gear assembly 20, the stator 30, the rotor 40, and the stator winding is recycled through the collecting member 52.

[0100] Specifically, the main requirement of the speed gear assembly 20 is lubrication, with forced self-spray lubrication as the main method and splash lubrication as the auxiliary method. The cooling lubrication medium is lubricating oil. When the lubricating oil passes through the control valve 59 and the speed of the speed gear assembly 20 is low, the spray pressure of the second spray port 551 is insufficient, and the forced lubrication does not meet the lubrication requirement. The gear part is immersed in the lubricating oil, and the lubrication requirement can be met by splashing the oil onto the gears and bearings through the gear stirring. When the speed of the speed gear assembly 20 increases and the pressure is sufficient, the second spray port 551 sprays the lubricating oil onto the gears and shifting mechanism for lubrication, and at this time the gears will not be immersed in the oil, and the various structures of the speed gear assembly 20 cannot be splashed and lubricated.

[0101] The vehicle according to the embodiment of the present invention includes the above-mentioned integrated electric drive device 100 .

[0102] According to the vehicle of the embodiment of the present invention, by setting the first spray port 511 corresponding to the winding end 311, the first cooling medium is directly sprayed onto the winding end 311, and the first cooling medium directly contacts the winding end 311, thereby increasing the probability that the first cooling medium contacts the winding end 311, making the cooling effect more stable, and improving the cooling effect, thereby improving the overall effect of the integrated electric drive device 100, and setting a collection port to recycle the first cooling medium, repeatedly recycling the first cooling medium, thereby improving the utilization rate, and at the same time, a first spray pipe 51 is provided, and the first spray pipe 51 is easy to install and disassemble, thereby making the integrated electric drive device 100 adaptable to a variety of cooling schemes, thereby improving applicability.

[0103] Other structures and operations of the integrated electric drive device 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0104] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. 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 present invention. 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.

[0105] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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. An integrated electric drive device, characterized in that: include: A housing, wherein the housing is provided with a receiving space; A speed change gear assembly (20), wherein the speed change gear assembly (20) is arranged in the accommodation space; A stator (30) and a rotor (40), wherein the stator (30) and the rotor (40) are arranged in the accommodation space, the stator (30) is provided with a stator winding, the stator winding has a winding end (311) located outside the stator (30), the rotor (40) is rotatably arranged on the housing, the rotor (40) is connected to the speed change gear assembly (20), and under the action of the stator winding, the rotor (40) is suitable for driving the speed change gear assembly (20) to work; A medium circulation component (50), the medium circulation component (50) comprising: A collecting member (52), the collecting member (52) being arranged at the bottom of the accommodating space, the collecting member (52) being provided with a collecting port for collecting the first cooling medium; a first spray pipe (51), wherein the first spray port (511) is arranged on the first spray pipe (51), the first spray pipe (51) is provided with the first spray port (511), and the first spray port (511) at least partially corresponds to the winding end (311) so as to spray the first cooling medium onto the winding end (311); A power pump (53), one end of the power pump (53) is connected to the collecting member (52), and the other end is connected to the first spray pipe (51), so as to guide the first cooling medium collected by the collecting member (52) to the first spray pipe (51).

2. The integrated electric drive device according to claim 1, characterized in that: In the axial direction of the stator (30), the first spray pipe (51) is arranged on a side of the winding end (311) away from the stator (30), the first spray pipe (51) is constructed in an arc shape and extends along the circumferential direction of the stator (30), and there are a plurality of first spray openings (511), which are arranged at intervals along the circumferential direction of the stator (30).

3. The integrated electric drive device according to claim 1, characterized in that: The stator (30) has a horizontal plane, the horizontal plane passes through the center line of the stator (30), and the first spray pipe (51) is arranged above the horizontal plane.

4. The integrated electric drive device according to claim 1, characterized in that: The medium circulation component (50) further comprises: a cooling pipe (54); an installation portion is provided on the inner wall of the shell, the cooling pipe (54) is arranged on the installation portion, and the cooling pipe (54) is connected to the power pump (53) to guide the first cooling medium to the cooling pipe (54).

5. The integrated electric drive device according to claim 4, characterized in that: The mounting portion is configured as a mounting groove, which extends along the circumferential direction of the stator (30). In the axial direction of the stator, the mounting groove is spaced apart from the winding end (311).

6. The integrated electric drive device according to claim 5, characterized in that: The shell is provided with a water jacket portion (12), the water jacket portion (12) having a water inlet (121), and the water inlet (121) is used to input a second cooling medium into the water jacket portion (12); wherein, The water jacket portion (12) surrounds the stator (30), the cooling pipe (54) is arranged on a side of the water jacket portion (12) facing the stator (30), and the cooling pipe (54) is adjacent to the water jacket portion (12).

7. The integrated electric drive device according to claim 6, characterized in that: A medium recovery guide (60) is provided below the stator (30), and the medium recovery guide (60) extends in the direction of the collecting member (52). The medium recovery guide (60) is provided on a side of the water jacket portion (12) facing the stator (30), and the medium recovery guide (60) is adjacent to the water jacket portion (12).

8. The integrated electric drive device according to claim 1, characterized in that: The first cooling medium is configured as a cooling lubricating medium, and the medium circulation component (50) further includes: a second spray pipe (55), the second spray pipe (55) is arranged in the accommodating space, and the second spray pipe (55) is at least partially arranged above the speed change gear assembly (20), and the second spray pipe (55) is provided with a second spray port (551) corresponding to the speed change gear assembly (20), and the second spray pipe (55) is connected to the power pump (53) to guide the cooling lubricating medium to the second spray pipe (55).

9. The integrated electric drive device according to claim 8, characterized in that: The medium circulation component (50) further comprises: A first heat sink (56), wherein an inlet of the first heat sink (56) is connected to the power pump (53); A filter element (57), wherein an inlet of the filter element (57) is connected to the first heat dissipation element (56); a communicating pipe (58), wherein the inlet of the communicating pipe (58) is connected to the filter element (57); a control valve (59), the control valve (59) having a first discharge port and a second discharge port, the second discharge port being connected to the second spray pipe (55), and the inlet of the control valve (59) being connected to the connecting pipe (58); A distribution pipe (512), one end of the distribution pipe (512) is connected to the first discharge outlet, the distribution pipe (512) is also connected to the first spray pipe (51), and a plurality of third spray ports (513) are provided on the distribution pipe (512).

10. A vehicle, characterized in that: An integrated electric drive device (100) comprising any one of claims 1 to 9.

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