A half shaft assembly, integrated power system and vehicle

By designing oil guide holes and oil guide grooves on the half-shaft assembly, oil lubrication is achieved, solving the problem of insufficient spline lubrication, improving lubrication reliability, reducing maintenance and usage costs, and simplifying the assembly process.

CN115839405BActive Publication Date: 2026-03-17WUHU ALT POWER TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-08
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

In the existing technology, the spline lubrication of the half shaft is insufficient, the lubrication reliability is low, resulting in high maintenance costs, and the half shaft has a large number of parts and complicated assembly.

Method used

The design of the half-shaft assembly structure employs oil guide holes and oil guide grooves to utilize oil lubrication, ensuring that oil is delivered from one spline to the other, simplifying the structure and reducing the number of parts.

Benefits of technology

It improves the lubrication adequacy and reliability of the half-shaft spline, reduces maintenance costs, simplifies the assembly process, and reduces the number of parts.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a half shaft assembly, an integrated power system and a car, and the half shaft assembly comprises: a half shaft body, the half shaft body is in a cylindrical shape, and first and second splines are arranged at two ends respectively; a first protruding part is arranged adjacent to the first spline, and a second protruding part is arranged adjacent to the second spline; a half shaft support bearing is movably connected to the second protruding part, and a bearing clasp and an oil seal are further arranged on the half shaft support bearing in a radial direction and sleeved on the half shaft body; wherein, the first and second protruding parts are provided with oil guide holes, and the half shaft body between the first and second protruding parts is further provided with an oil guide groove for conveying oil of the first spline to the second spline. Through the half shaft assembly, the integrated power system and the car provided by the application, the spline lubrication of the half shaft is sufficient, the lubrication reliability is increased, and the half shaft is not easy to be damaged; the problems of high production and maintenance costs of the half shaft and the problems of a large number of parts of the half shaft leading to complicated assembly are solved.
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Description

Technical Field

[0001] This invention relates to the field of automobile design and manufacturing, and in particular to a half-shaft assembly, an integrated powertrain system, and an automobile. Background Technology

[0002] With the advancement of technology, automobiles have become an important means of transportation in people's daily lives. Among the components of an automobile, current technology uses externally mounted half-shafts, assembled separately into the EDU (Electronic Drive Unit). Lubrication at the splines is mostly done with grease, requiring frequent maintenance. The bearings used are self-sealing bearings, resulting in high maintenance costs. In existing technology, the spline lubrication of the half-shaft is insufficient, leading to low lubrication reliability and frequent damage. Furthermore, the large number of parts in the half-shaft results in cumbersome assembly. To improve the lubrication reliability of the half-shaft, reduce the number of parts in the vehicle, and improve the convenience of vehicle assembly, there is an urgent need to develop a new half-shaft assembly.

[0003] In view of the above problems, this invention is proposed. Summary of the Invention

[0004] This invention provides a half-shaft assembly, an integrated power system, and an automobile, aiming to solve the problems in the prior art, such as insufficient lubrication of the spline of the half-shaft, low lubrication reliability, high production and maintenance costs due to the use of self-sealing bearings in the half-shaft, and cumbersome assembly due to the large number of parts in the half-shaft.

[0005] In view of the above, the present invention first provides a half-shaft assembly, comprising:

[0006] The half-shaft body is cylindrical, with a first spline and a second spline at each end. A first protrusion is provided adjacent to the first spline, and a second protrusion is provided adjacent to the second spline. The first spline is used to connect to the reducer assembly, and the second spline is used to output power.

[0007] The half-shaft support bearing is movably connected to the second protrusion. The radial side of the half-shaft support bearing is also provided with a bearing retainer and an oil seal that are sleeved on the half-shaft body.

[0008] The first protrusion and the second protrusion are provided with oil guide holes, and the half shaft body between the first protrusion and the second protrusion is also provided with an oil guide groove for conveying the oil of the first spline to the second spline.

[0009] Optionally, the oil guide groove is spirally arranged along the half-shaft body between the first protrusion and the second protrusion. The half-shaft assembly is lubricated with oil, and the oil is guided from the first spline to the second spline through the oil guide groove.

[0010] Optionally, the oil guide hole includes a first oil guide hole and a second oil guide hole. The first oil guide hole passes through the first protrusion and is used to guide the oil in the first spline to the oil guide groove. The second oil guide hole passes through the second protrusion and is used to guide the oil in the oil guide groove to the first spline.

[0011] A second aspect of the present invention provides an integrated power system, including the above-described half-shaft assembly, and further comprising:

[0012] case;

[0013] The motor assembly, built into one side of the housing, is used to provide power;

[0014] The reducer assembly is connected to one end of the motor assembly and is used for speed transmission.

[0015] The half-shaft assembly is built into the reducer assembly. The second spline end of the half-shaft assembly is external and suspended on the side of the motor assembly. The oil of the reducer assembly is led from the first spline to the second spline.

[0016] Optionally, the integrated powertrain also includes a controller assembly located on the outside of the housing near the half-shaft assembly for controlling the motor assembly;

[0017] The controller assembly includes at least one of the following: controller cover, drive module, capacitor, shielding plate, power component, DC component, three-phase output component, and filter component.

[0018] Optionally, the controller cover is connected to the outside of the integrated power system, and the drive module, shielding plate, three-phase output component and power component are arranged in sequence on the inside of the controller cover; wherein, the output terminal of the capacitor is electrically connected to the input terminal of the power component, the input terminal of the three-phase output component is electrically connected to the output terminal of the power component, and the output terminal of the three-phase output component extends into the motor assembly and is electrically connected to the motor assembly.

[0019] Optionally, the DC component is externally mounted in the housing for connecting the DC wiring harness, while the internal component is connected to the filter assembly.

[0020] Optionally, it also includes a heat exchanger assembly disposed on the outer side of the housing away from the controller assembly; and an electronic pump assembly disposed on the outer side of the housing, adjacent to and in communication with the heat exchanger assembly.

[0021] Optionally, the housing is provided with cooling water channels that are connected to the heat exchanger assembly and the electric pump assembly. The cooling water channels include housing water channels, inlet pipes and outlet pipes. The outlet pipe is fixed to the housing near the motor assembly. The inlet pipe is provided on the side of the housing away from the motor assembly. The housing water channels are located inside the housing shell.

[0022] A third aspect of the present invention also provides an automobile including the aforementioned integrated powertrain system.

[0023] The beneficial effects of the half-shaft assembly, integrated power system, and automobile provided in this application are as follows:

[0024] By designing the structure of the half-shaft assembly, oil guide holes are designed on the first and second protrusions of the half-shaft body, as well as an oil guide groove between the first and second protrusions. This allows the oil in the first spline of the half-shaft body to be transported to the second spline through the oil guide holes and groove, thus lubricating the second spline. This improves the sufficiency and reliability of the half-shaft spline lubrication, avoids damage caused by insufficient lubrication of the half-shaft spline, and reduces maintenance costs. The half-shaft assembly has a simple structure, with the oil guide holes and grooves all located on the half-shaft body, reducing the number of parts in the half-shaft assembly and making vehicle assembly more convenient. The half-shaft assembly uses oil lubrication, reducing operating costs.

[0025] Other features and advantages of the embodiments of the present invention will be described in the following detailed description section. Attached image description:

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the half-shaft body provided as an example in an embodiment of the present invention;

[0028] Figure 2 This is an assembly diagram of an integrated power system provided as an example in an embodiment of the present invention;

[0029] Figure 3 This is a cross-sectional schematic diagram of an integrated power system provided as an example in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of a car module provided as an example in an embodiment of the present invention.

[0031] The components represented by each number in the above attached diagram are listed below:

[0032] 11. Half-shaft body; 12. First spline;

[0033] 13. Second spline; 14. First protrusion;

[0034] 15. Second protrusion; 16. Half-shaft support bearing;

[0035] 18. Bearing snap ring; 17. Oil seal;

[0036] 19. Oil guide groove; 20. Oil guide hole;

[0037] 201, First oil guide hole; 202, Second oil guide hole;

[0038] 100. Integrated power system; 110. Housing;

[0039] 120. Motor assembly; 130. Reducer assembly;

[0040] 10. Half-shaft assembly; 140. Controller assembly;

[0041] 141. Controller top cover; 142. Drive module;

[0042] 145. Power components; 144. Shielding plate;

[0043] 147. Three-phase output assembly; 146. DC assembly;

[0044] 150. Heat exchanger assembly; 148. Filter assembly;

[0045] 160. Electronic pump assembly; 1000. Automobile. Detailed implementation method:

[0046] To make the above and other features and advantages of the present invention clearer, the invention will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explanation to those skilled in the art and are exemplary only, not restrictive.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] The overall concept of this embodiment is to provide a half-shaft assembly 10, an integrated power system 100, and a vehicle 1000. The half-shaft assembly 10 uses oil lubrication to reduce operating costs. By optimizing the structure of the half-shaft assembly 10, protruding parts are designed at the splines at both ends of the half-shaft assembly 10, and oil guide holes 20 are added to the protruding parts. At the same time, an oil guide groove 19 is designed on the half-shaft body 11 between the two protruding parts. This allows the oil to be transported from the spline connected to the reducer assembly 130 through the oil guide holes 20 and the oil guide groove 19 to the spline at the other end during the rotation of the half-shaft, so that the splines at both ends are fully lubricated. At the same time, the half-shaft structure is simplified, retaining only the necessary half-shaft support bearing 16, bearing retainer 18, and oil seal 17 to reduce the number of parts. This aims to solve the problems of insufficient lubrication of the splines of the half-shaft, low lubrication reliability, high production and maintenance costs due to the use of self-sealing bearings in the half-shaft, and cumbersome assembly due to the large number of parts in the half-shaft in the prior art.

[0050] Please refer to Figures 1-4 In an embodiment provided by the present invention, a half-shaft assembly 10 includes:

[0051] The half-shaft body 11 is cylindrical, with a first spline 12 and a second spline 13 respectively at both ends. A first protrusion 14 is provided adjacent to the first spline 12, and a second protrusion 15 is provided adjacent to the second spline 13. The first spline 12 is used to connect to the reducer assembly 130, and the second spline 13 is used to output power.

[0052] The half-shaft support bearing 16 is movably connected to the second protrusion 15. The half-shaft support bearing 16 is also radially provided with a bearing snap ring 18 and an oil seal 17 that are sleeved on the half-shaft body 11.

[0053] The first protrusion 14 and the second protrusion 15 are provided with oil guide holes 20, and the half shaft body 11 between the first protrusion 14 and the second protrusion 15 is also provided with an oil guide groove 19, which is used to transport the oil of the first spline 12 to the second spline 13.

[0054] The following is a detailed explanation of each structure.

[0055] In an optional embodiment of the present invention, the half-shaft assembly 10 includes a half-shaft body 11, a half-shaft support bearing 16, a bearing retainer 18, and an oil seal 17. The half-shaft body 11 is cylindrical, with a first spline 12 and a second spline 13 at each end. The first spline 12 connects to the reducer assembly 130 of the integrated power system 100, and the second spline 13 outputs power from the integrated power system 100. A first protrusion 14 is designed near the first spline 12, and a second protrusion 15 is designed near the second spline 13. Oil guide holes 20 are designed for the first protrusion 14 and the second protrusion 15, respectively, axially penetrating both protrusions. A spiral groove is designed on the outer wall of the half-shaft body 11 between the first protrusion 14 and the second protrusion 15. The design of the oil guide groove 19 and the oil guide hole 20 allows oil to be transported from the first spline 12 to the second spline 13, achieving sufficient lubrication of the splines at both ends of the half-shaft body 11. When the half-shaft assembly 10 is installed in the integrated power system 100, the first protrusion 14 and the second protrusion 15 can isolate the oil guide groove 19 to control the directional and stable delivery of oil. The second protrusion 15 is movably connected to the half-shaft support bearing 16, so that the half-shaft body 11 is supported away from the end of the first spline 12. The radial side of the half-shaft support bearing 16 is also designed with a bearing retainer 18 and an oil seal 17 that are sleeved on the half-shaft body 11. The bearing retainer 18 is fixedly connected to the half-shaft body 11 to restrict the half-shaft support bearing 16 from sliding toward the second spline 13. The oil seal 17 is an annular rubber ring adapted to the half-shaft body 11. The design of the oil seal 17 prevents oil leakage from sources other than the oil guide hole 20. By employing oil lubrication, when the half-shaft assembly 10 rotates within the integrated power system 100, oil at the first spline 12 is transported to the oil guide groove 19 via the oil guide hole 20 of the first protrusion 14. As the half-shaft body 11 rotates, the oil guide groove 19 transports oil to the oil guide hole 20 of the second protrusion 15, which then flows to the second spline 13. This ensures sufficient lubrication between the first spline 12 and the second spline 13, improving the sufficiency and reliability of the half-shaft spline lubrication, preventing damage due to insufficient lubrication of the half-shaft splines, and reducing maintenance costs. The half-shaft assembly 10 has a simple structure. By arranging both the oil guide hole 20 and the oil guide groove 19 within the half-shaft body 11, the number of parts in the half-shaft assembly 10 is reduced, making vehicle assembly more convenient. The use of oil lubrication in the half-shaft assembly 10 also reduces operating costs.

[0056] Furthermore, the oil guide groove 19 is spiral-shaped between the first protrusion 14 and the second protrusion 15 of the half shaft body 11. By designing the oil guide groove 19 as a spiral, it is beneficial for the oil guide groove 19 to rotate when the half shaft body 11 rotates, so that the oil is continuously transported from the oil guide hole 20 of the first protrusion 14 to the oil guide hole 20 of the second protrusion 15, making the oil transport more stable and increasing the reliability of lubrication. At the same time, the half shaft assembly 10 reduces the lubrication cost by using oil lubrication.

[0057] Please see Figure 1 In an optional embodiment of the present invention, the oil guide hole 20 of the half-shaft body 11 includes a first oil guide hole 201 and a second oil guide hole 202, wherein the first oil guide hole 201 radially penetrates the first protrusion 14, and the second oil guide hole 202 radially penetrates the second protrusion 15; when the half-shaft assembly 10 is integrated into the power system 100, the first oil guide hole 201 connects the space of the first spline 12 with the oil guide groove 19, and the second oil guide hole 202 connects the space of the second spline 13 with the oil guide groove 19, so that the oil can be smoothly and directionally transported from the end of the first spline 12 to the end of the second spline 13; wherein the number of first oil guide holes 201 can be designed to be more than the number of second oil guide holes 202, so that the oil in the oil guide groove 19 can be kept sufficient, and the oil can flow out continuously and stably from the second oil guide hole 202.

[0058] Please see Figure 2 and Figure 3 The present invention also provides an integrated power system 100, including the above-mentioned half-shaft assembly 10, and further including:

[0059] Housing 110; motor assembly 120, built into one side of housing 110, for providing power; reducer assembly 130, connected to one end of motor assembly 120, for speed transmission; wherein, half shaft assembly 10 is built into reducer assembly 130, the second spline 13 end of half shaft assembly 10 is external and suspended on the side of motor assembly 120, and the oil of reducer assembly 130 is led from the first spline 12 to the second spline 13.

[0060] Please continue reading. Figure 2 and Figure 3In an optional embodiment of the present invention, the motor assembly 120 and the reducer assembly 130 are placed inside the housing 110. The motor assembly 120 is used to provide power. The input end of the reducer assembly 130 is connected to one end of the motor assembly 120 to transmit the power output by the motor assembly 120 at a variable speed. The first spline 12 end of the half-shaft assembly 10 is built into the reducer assembly 130 to receive the power transmitted by the reducer assembly 130, and the second spline 13 end is placed outside the housing 110 to output the power transmitted by the reducer assembly 130. The half-shaft body 11 is parallel to the bearing of the motor assembly 120. When the integrated power system 100 is in use, the oil at the output end of the reducer assembly 130 is transported from the first spline 12 through the first oil guide hole 201, the oil guide groove 19 and the second oil guide hole 202 to the second spline 13, so that the spline of the half-shaft assembly 10 is fully lubricated, improving the reliability of lubrication and reducing maintenance costs.

[0061] Furthermore, the integrated power system 100 also includes a controller assembly 140, located on the outside of the housing 110 near the half-shaft assembly 10, for controlling the motor assembly 120; wherein, the controller assembly 140 includes at least one of a controller cover 141, a drive module 142, a capacitor, a shielding plate 144, a power component 145, a DC component 146, a three-phase output component 147, and a filter component 148.

[0062] In an optional embodiment of the present invention, the integrated power system 100 further includes a controller assembly 140, which is used to control the motor assembly 120. The controller assembly 140 includes a controller cover 141, a drive module 142, a capacitor, a shielding plate 144, a power component 145, a DC component 146, a three-phase output component 147, and a filter component 148.

[0063] Furthermore, the controller assembly 140 is mounted on the side of the housing 110 near the half-shaft assembly 10. The controller cover 141 is plate-shaped and covers the outermost part of the integrated power system 100 to seal the controller assembly 140. Along the plumb line of the controller cover 141, the drive module 142, the shielding plate 144, the three-phase output component 147, and the power component 145 are arranged in sequence. The drive module 142 is a PCBA circuit board. The shielding plate 144 is designed between the drive module 142 and the three-phase output component 147 to isolate the influence of the high-voltage signal on the low-voltage signal. The output terminal of the capacitor (not shown) is electrically connected to the input terminal of the power component 145. The capacitor is used for energy storage and voltage regulation. The output terminal of the power component 145 is electrically connected to the input terminal of the three-phase output component 147 to convert the DC power supply into three-phase AC power. The output terminal of the three-phase output component 147 is electrically connected to the motor assembly 120 to introduce the three-phase AC power into the motor assembly 120.

[0064] Furthermore, the DC component 146 is partially externally mounted on the housing 110 for connecting the DC wiring harness, while the internal portion is connected to the filter component 148; the filter component 148 is used to filter interference signals.

[0065] Furthermore, the integrated power system 100 also includes a heat exchanger assembly 150 and an electric pump assembly 160. The heat exchanger assembly 150 is located outside the housing 110, away from the controller assembly 140. The electric pump assembly 160 is located outside the housing 110, adjacent to and connected to the heat exchanger assembly 150.

[0066] Furthermore, the housing 110 of the integrated power system 100 is also designed with a cooling water channel (not shown), which is connected to the heat exchanger assembly 150 and the electric pump assembly 160. The cooling water channel includes the housing 110 water channel, the inlet pipe and the outlet pipe. The outlet pipe is fixed to the housing 110 near the motor assembly 120. The inlet pipe is provided on the side of the housing 110 away from the motor assembly 120. The housing 110 water channel is located inside the shell of the housing 110.

[0067] In an optional embodiment of the present invention, since the integrated power system 100 generates a large amount of heat during operation, it needs to be cooled down. Through the cooling water channel designed in the housing 110, the cooling liquid enters through the inlet pipe, passes through the housing 110 water channel inside the housing 110 shell layer, cools the integrated power system 100, and then passes through the heat exchanger assembly 150 for heat exchange treatment. After the temperature is reduced, it flows out through the outlet pipe. The design of the electric pump assembly 160 allows the cooling liquid inside the cooling water channel to be pumped in a directional manner to achieve the cooling treatment of the integrated power system 100.

[0068] Finally, an embodiment of the present invention also provides a vehicle 1000, including the aforementioned integrated powertrain 100.

[0069] Those skilled in the art should understand that if the half-shaft assembly 10, integrated power system 100 and automobile 1000 provided in the embodiments of the present invention are combined or replaced by means of fusion, simple changes, mutual transformation, etc., such as moving the position of each component; or setting the product they constitute as a whole; or having a detachable design; as long as the combined components can form a device / apparatus / system with a specific function, using such a device / apparatus / system to replace the corresponding components of the present invention also falls within the protection scope of the present invention.

[0070] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0071] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0073] In summary, the half-shaft assembly 10, integrated power system 100, and automobile 1000 provided in this application, through the structural design of the half-shaft assembly 10, incorporate oil guide holes 20 on the first protrusion 14 and the second protrusion 15 of the half-shaft body 11, as well as an oil guide groove 19 between the first protrusion 14 and the second protrusion 15. This allows the oil in the first spline 12 of the half-shaft body 11 to be transported to the second spline 13 through the oil guide holes 20 and the oil guide groove 19, thereby lubricating the second spline 13. This improves the sufficiency and reliability of the half-shaft spline lubrication, avoids damage caused by insufficient lubrication of the half-shaft splines, and reduces maintenance costs. The half-shaft assembly 10 has a simple structure, with the oil guide holes 20 and the oil guide groove 19 both located on the half-shaft body 11, reducing the number of parts in the half-shaft assembly 10 and making vehicle assembly more convenient. The half-shaft assembly 10 uses oil lubrication, reducing operating costs.

[0074] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A half shaft assembly characterized by, It comprises: a half shaft body in a cylindrical shape, with a first spline and a second spline respectively arranged at two ends, a first protruding part arranged adjacent to the first spline, and a second protruding part arranged adjacent to the second spline, the first spline being used for connecting a reducer assembly, and the second spline being used for outputting power; a half shaft support bearing movably connected to the second protruding part, the half shaft support bearing being further provided with a bearing clasp and an oil seal sleeved on the half shaft body in a radial direction; wherein the first protruding part and the second protruding part are provided with oil guide holes, and the half shaft body between the first protruding part and the second protruding part is further provided with an oil guide groove for conveying oil of the first spline to the second spline; the oil guide holes comprising a first oil guide hole and a second oil guide hole, wherein the first oil guide hole penetrates the first protruding part in a radial direction, and the second oil guide hole penetrates the second protruding part in a radial direction; the first oil guide hole being in communication with a space of the first spline and the oil guide groove, so as to drain oil of the first spline to the oil guide groove; the second oil guide hole being in communication with a space of the second spline and the oil guide groove, so as to drain oil of the oil guide groove to the second spline.

2. The axle assembly of claim 1, wherein, The oil guide groove is arranged spirally along the half shaft body between the first protruding part and the second protruding part, and the half shaft assembly is lubricated by oil, and the oil is drained from the first spline to the second spline through the oil guide groove.

3. An integrated power system, characterized by, It comprises the half shaft assembly according to any one of claims 1-2, and further comprises: a housing; a motor assembly built in one side of the housing for providing power; a reducer assembly connected to one end of the motor assembly for speed change transmission; wherein the half shaft assembly is built in the reducer assembly, the second spline end of the half shaft assembly is externally arranged and hung on the side of the motor assembly, and oil of the reducer assembly is guided to the second spline from the first spline.

4. The integrated power system of claim 3, wherein, It further comprises a controller assembly arranged outside the housing close to the half shaft assembly for controlling the motor assembly; wherein the controller assembly comprises at least one of a controller upper cover, a driving module, a capacitor, a shielding plate, a power component, a direct current component, a three-phase output component, and a filter component.

5. The integrated power system of claim 4, wherein, The controller upper cover is connected to the outside of the integrated power system, and the driving module, the shielding plate, the three-phase output component, and the power component are arranged in sequence on the inside of the controller upper cover; wherein the output end of the capacitor is electrically connected to the input end of the power component, the input end of the three-phase output component is electrically connected to the output end of the power component, and the output end of the three-phase output component extends to the inside of the motor assembly and is electrically connected to the motor assembly.

6. The integrated power system of claim 5, wherein, The direct current component is partially externally arranged on the housing for connecting a direct current wire harness, and the internal part is connected to the filter component.

7. The integrated power system of claim 4, wherein, It further comprises a heat exchanger assembly arranged outside the housing away from the controller assembly; and an electronic pump assembly arranged outside the housing adjacent to and in communication with the heat exchanger assembly.

8. The integrated power system of claim 7, wherein, The shell is provided with a cooling water channel in communication with the heat exchanger assembly and the electronic pump assembly, the cooling water channel comprises a shell water channel, a water inlet pipe and a water outlet pipe, the water outlet pipe is fixed on the shell near the motor assembly, the side of the shell away from the motor assembly is provided with the water inlet pipe, and the shell water channel is arranged inside the shell layer of the shell.

9. An automobile characterized by comprising: The integrated power system as claimed in any one of claims 3 to 8.

Citation Information

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