Oil pump and vehicle

Abstract

The oil pump comprises an oil pump shell and a rotor assembly, an installation cavity is formed in the oil pump shell, a first oil groove and a second oil groove are formed in the cavity wall of the installation cavity, the first oil groove and the second oil groove are arranged in a spaced mode, the first oil groove is communicated with an oil inlet of the oil pump, and the second oil groove is communicated with an oil outlet of the oil pump. The second oil groove is communicated with an oil inlet of an oil cooler, the rotor assembly is installed in the installation cavity, and the rotor assembly is used for transmitting oil in the first oil groove to the second oil groove; the cavity wall of the installation cavity is further provided with a communication groove, one end of the communication groove is communicated with the first oil groove, and the other end of the communication groove is communicated with the second oil groove. According to the oil pump and the vehicle, the oil suction force of the oil pump can be improved when the rotor assembly conducts differential pressure oil suction.

Description

Technical Field

[0001] This application belongs to the field of vehicle parts technology, specifically relating to an oil pump and a vehicle. Background Technology

[0002] Normally, after oil enters the oil pump, the rotating rotor assembly inside the pump discharges the oil to the oil cooler for cooling, and then returns to the pump to enter the motor rotor. However, in this process, due to the thick walls and multiple layers of the oil passage design in existing oil pumps, insufficient differential pressure suction occurs when the rotor assembly rotates, ultimately resulting in poor function of the internal and external circulation structure of the oil pump. Utility Model Content

[0003] The purpose of this invention is to provide an oil pump and vehicle that can improve the oil pump's suction force when the rotor assembly is performing differential pressure oil suction.

[0004] The first aspect of this utility model discloses an oil pump, comprising: an oil pump housing and a rotor assembly. The oil pump housing has an installation cavity, and the cavity wall of the installation cavity has a first oil groove and a second oil groove, which are spaced apart from each other. The first oil groove is connected to the oil inlet of the oil pump, and the second oil groove is connected to the oil inlet of an oil cooler. The rotor assembly is installed in the installation cavity and is used to transfer oil in the first oil groove to the second oil groove. The cavity wall of the installation cavity also has a connecting groove, one end of which is connected to the first oil groove, and the other end of which is connected to the second oil groove.

[0005] In one exemplary embodiment, the connecting groove includes a left groove and a right groove spaced apart from each other; one end of the left groove is connected to the first oil groove, and the other end of the left groove is connected to the second oil groove; one end of the right groove is connected to the first oil groove, and the other end of the right groove is connected to the second oil groove.

[0006] In one exemplary embodiment, along the height direction of the oil pump housing: the cavity wall of the mounting cavity is provided with two first oil grooves, two second oil grooves and two connecting grooves; the two first oil grooves are arranged opposite each other along the axial direction of the rotor assembly; the two second oil grooves are arranged opposite each other along the axial direction of the rotor assembly; the two connecting grooves are arranged opposite each other along the axial direction of the rotor assembly.

[0007] In one exemplary embodiment, the cross-sectional area of ​​the connecting groove is smaller than the cross-sectional area of ​​the first oil groove and smaller than the cross-sectional area of ​​the second oil groove.

[0008] In one exemplary embodiment, the first oil groove, the left groove, the second oil groove, and the right groove are all concentric arc grooves, and are arranged sequentially in a clockwise or counterclockwise direction.

[0009] In one exemplary embodiment, the oil pump housing includes an upper shell portion and a lower shell portion disposed along the height direction of the oil pump housing, and the mounting cavity is located between the upper shell portion and the lower shell portion; two first oil grooves are correspondingly disposed in the upper shell portion and the lower shell portion; two second oil grooves are correspondingly disposed in the upper shell portion and the lower shell portion; two connecting grooves are correspondingly disposed in the upper shell portion and the lower shell portion; the oil pump further includes a sealing ring, the sealing ring is connected to the upper shell portion and the lower shell portion, the sealing ring is located between the upper shell portion and the lower shell portion, and is used to seal the connection between the upper shell portion and the lower shell portion.

[0010] In one exemplary embodiment, the end face of the upper shell portion facing the lower shell portion is provided with a first mounting ring groove, and the end face of the lower shell portion facing the upper shell portion is provided with a second mounting ring groove; one side of the sealing ring is located in the first mounting ring groove, and the other side of the sealing ring is located in the second mounting ring groove.

[0011] In an exemplary embodiment, the cavity wall of the mounting cavity is further provided with a third oil groove, which is located in the upper shell portion. The first oil groove, the left groove, the second oil groove, and the right groove are spaced apart from the third oil groove and are all arranged around the third oil groove. The third oil groove is used to communicate with the oil outlet of the oil cooler. The lower shell portion is provided with a through hole, which communicates with the third oil groove and the oil inlet of the motor.

[0012] In an exemplary embodiment, the upper shell is provided with an oil inlet groove communicating with the first oil groove, an oil outlet groove communicating with the second oil groove, and an oil return groove communicating with the third oil groove. Along the height direction of the oil pump housing: the oil inlet groove, the oil outlet groove, and the oil return groove each include an oil inlet hole disposed at the bottom of the groove and a process opening disposed opposite to the bottom of the groove; the oil pump also includes a plurality of oil passage sealing plates, which are disposed one-to-one with the oil inlet groove, the oil outlet groove, and the oil return groove, and are used to cover the corresponding process openings of the oil inlet groove, the oil outlet groove, and the oil return groove; wherein the bottom of the oil inlet groove, the bottom of the oil outlet groove, and the bottom of the oil return groove are all spaced apart from the oil passage sealing plates.

[0013] The second aspect of this utility model discloses a vehicle, an electric motor, an oil cooler, and the aforementioned oil pump, wherein the oil pump is connected to the electric motor and the oil cooler.

[0014] The present invention has the following beneficial effects:

[0015] In this invention, during the process of the rotor assembly rotating and drawing the first oil tank into the second oil tank, a connecting groove is provided between the first oil tank and the second oil tank to improve the smoothness of oil flow when the rotor assembly of the oil pump performs differential pressure oil suction by rotating, thereby improving the oil suction force of the oil pump.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and illustrative, and do not limit the application. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. The drawings herein are for illustrating the inventive concept of this application and are not entirely equivalent to the structure of the actual product protected by this application.

[0018] Figure 1 A front view schematic diagram of the oil pump in an embodiment of this utility model is shown.

[0019] Figure 2 A top view of the oil pump in an embodiment of the present invention is shown.

[0020] Figure 3 A bottom view of the oil pump in an embodiment of this utility model is shown.

[0021] Figure 4 A three-dimensional structural schematic diagram of the oil pump in an embodiment of this utility model is shown.

[0022] Figure 5 An embodiment of the present invention is shown. Figure 1 A partial structural diagram of an oil pump.

[0023] Figure 6 An embodiment of the present invention is shown. Figure 1 A schematic diagram of another part of the oil pump structure.

[0024] Figure 7 An embodiment of the present invention is shown. Figure 1 A schematic diagram of the exploded structure of an oil pump.

[0025] Figure 8 An embodiment of the present invention is shown. Figure 1 A schematic diagram of the upper casing of the oil pump.

[0026] Figure 9 An embodiment of the present invention is shown. Figure 1 A schematic diagram of the upper casing of the oil pump from another perspective.

[0027] Figure 10 An embodiment of the present invention is shown. Figure 1 A schematic diagram of the cross-sectional structure of the oil pump along section line AA.

[0028] Figure 11 An embodiment of the present invention is shown. Figure 10 A partially enlarged schematic diagram of the oil pump.

[0029] Explanation of reference numerals in the attached figures:

[0030] 11. Oil pump housing; 111. Upper housing; 112. Lower housing; 113. Oil passage sealing plate; 114. Sealing ring; 101. First oil groove; 101a. Oil pump inlet; 102. Second oil groove; 102a. Oil pump outlet; 103. Third oil groove; 103a. Oil pump return port; 104. Connecting groove; 104a. Left groove; 104b. Right groove; 105. Oil inlet groove; 106. Oil outlet groove; 107. Oil return groove; 108. Second mounting ring groove; 109. Through hole; 21. Rotor assembly; 211. Inner rotor; 212. Outer rotor; 201. Gap; 202. Connecting hole; 2111. Plane; a. Process opening. Detailed Implementation

[0031] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0032] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0033] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0034] Combination Figures 1 to 11 As shown, this embodiment discloses an oil pump that can be used to provide power transmission for the oil in a cooling power system.

[0035] Combination Figures 7 to 9 As shown, the oil pump includes an oil pump housing 11, and an installation cavity is provided inside the oil pump housing 11. The cavity wall of the installation cavity is provided with a first oil groove 101 and a second oil groove 102. The first oil groove 101 and the second oil groove 102 are spaced apart from each other. The first oil groove 101 is connected to the oil pump inlet 101a, and the second oil groove 102 is connected to the oil cooler inlet through the oil pump outlet 102a.

[0036] In this embodiment, combined with Figure 1 As shown, the oil pump housing 11 includes an upper shell portion 111 and a lower shell portion 112 disposed along the height direction of the oil pump housing 11, and the mounting cavity is located between the upper shell portion 111 and the lower shell portion 112.

[0037] For example, the upper shell 111 is provided with an upper mounting groove, the opening of which faces the lower shell 112; the lower shell 112 is provided with a lower mounting groove, the opening of which faces the upper shell 111. When the upper shell 111 and the lower shell 112 are connected, the upper mounting groove and the lower mounting groove together form a mounting cavity.

[0038] Of course, in other embodiments, the oil pump housing 11 may also be an integral structure without considering the manufacturing process.

[0039] In this embodiment, combined with Figures 7 to 9 As shown, along the height direction of the oil pump housing 11, the cavity wall of the mounting cavity is provided with two first oil grooves 101 and two second oil grooves 102. The two first oil grooves 101 are arranged opposite each other along the axial direction of the rotor assembly 21; the two second oil grooves 102 are arranged opposite each other along the axial direction of the rotor assembly 21.

[0040] Furthermore, combined Figures 7 to 9 As shown, one of the two first oil tanks 101 is located in the upper shell portion 111, and the other first oil tank 101 is located in the lower shell portion 112; or, one of the two first oil tanks 101 is located in the lower shell portion 112, and the other first oil tank 101 is located in the upper shell portion 111, without limitation.

[0041] Furthermore, one of the two second oil grooves 102 is located in the upper shell portion 111, and the other second oil groove 102 is located in the lower shell portion 112; or, one of the two second oil grooves 102 is located in the lower shell portion 112, and the other second oil groove 102 is located in the upper shell portion 111, without limitation.

[0042] The first oil groove 101 and the second oil groove 102 of the lower shell 112 and the upper shell 111 are both arranged at intervals along the horizontal direction.

[0043] In this embodiment, the two first oil grooves 101 are arranged opposite each other along the axial direction of the rotor assembly 21, meaning that the orthographic projection of the first oil groove 101 located on the upper shell portion 111 onto the lower shell portion 112 is located within the first oil groove 101 of the lower shell portion 112, and the orthographic projection of the first oil groove 101 located on the lower shell portion 112 onto the upper shell portion 111 is located within the first oil groove 101 of the upper shell portion 111; the two second oil grooves 102 are arranged opposite each other along the height direction of the shell, meaning that the orthographic projection of the second oil groove 102 located on the upper shell portion 111 onto the lower shell portion 112 is located within the second oil groove 102 of the lower shell portion 112, and the orthographic projection of the second oil groove 102 located on the lower shell portion 112 onto the upper shell portion 111 is located within the second oil groove 102 of the upper shell portion 111.

[0044] In this embodiment, the first oil groove 101 of the upper shell 111 is connected to the oil pump inlet 101a, and the second oil groove 102 of the upper shell 111 is connected to the oil cooler inlet. That is, the oil pump inlet 101a is provided in the upper shell 111, and the upper shell 111 is provided with an oil pump outlet 102a for connecting the second oil groove 102 and the oil cooler inlet.

[0045] In other embodiments, when there is only one first oil tank 101 and one second oil tank 102. The positions of the first oil tank 101 and the second oil tank 102 can also be that both are located in the upper shell portion 111; or, both are located in the lower shell portion 112, and the positions of the first oil tank 101 and the second oil tank 102 can also be that the first oil tank 101 is located in the upper shell portion 111 and the second oil tank 102 is located in the lower shell portion 112.

[0046] Combination Figure 6 As shown, the oil pump also includes a rotor assembly 21, which is installed in the mounting cavity and is used to transfer the oil in the first oil tank 101 to the second oil tank 102.

[0047] In this embodiment, the rotor assembly 21 includes an inner rotor 211 and an outer rotor 212. The inner rotor 211 has a plurality of protruding teeth circumferentially arranged on its outer side, and the outer rotor 212 has a mounting hole, the wall of which is recessed with a plurality of tooth grooves. The minimum diameter of the mounting hole (excluding the tooth grooves) is greater than the minimum outer diameter of the inner rotor 211 (excluding the protruding teeth), and the maximum diameter of the mounting hole (including the tooth grooves) is greater than the maximum outer diameter of the inner rotor 211 (including the protruding teeth). Therefore, when the inner rotor 211 is installed inside the outer rotor 212, and the protruding teeth of the inner rotor 211 engage with the tooth grooves of the outer rotor 212, some of the protruding teeth can mesh with some of the tooth grooves, while a gap 201 exists between the other part of the protruding teeth and the groove wall of their corresponding tooth grooves. When the inner rotor 211 and the outer rotor 212 rotate, there is a gap 201 between the tooth and the groove wall, which connects the first oil groove 101 of the upper shell 111 and the first oil groove 101 of the lower shell 112, and connects the second oil groove 102 of the upper shell 111 and the second oil groove 102 of the lower shell 112. This allows the inner rotor 211 and the outer rotor 212 to carry oil from the first oil groove 101 into the second oil groove 102 when they rotate.

[0048] For example, combined Figure 5 As shown, after the oil enters from the first oil groove 101 of the upper shell 111, it can first enter the gap 201 between the tooth and the groove wall under the rotation of the rotor assembly 21. Then, under the rotation of the rotor assembly 21, part of the oil may flow into the first oil groove 101 of the lower shell 112, and another part enters the second oil groove 102 when the gap 201 between the tooth and the groove wall is connected to the second oil groove 102, and finally flows to the oil cooler.

[0049] It should be understood that by adjusting the rotational speed of the rotor assembly 21, the flow rate of oil from the first oil tank 101 to the second oil tank 102 can be controlled.

[0050] Furthermore, combined Figure 6 As shown, the inner rotor 211 is provided with a connecting hole 202, which is used to connect with the mounting journal on the rotor of the motor. The hole wall of the connecting hole 202 includes at least one plane 2111, and the mounting journal on the rotor is also provided with at least one fitting surface that mates with the plane 2111, thereby realizing a flat rectangular connection between the inner rotor 211 and the mounting journal on the rotor of the motor.

[0051] Combination Figure 8 As shown, the cavity wall of the mounting cavity is also provided with a connecting groove 104. One end of the connecting groove 104 is connected to the first oil groove 101, and the other end of the connecting groove 104 is connected to the second oil groove 102.

[0052] For example, when there are two oil tanks 101 and two oil tanks 102, the first oil tank 101 and the second oil tank 102 of the upper shell 111 can be connected only through the connecting groove 104, or the first oil tank 101 and the second oil tank 102 of the lower shell 112 can be connected only through the connecting groove 104, or the first oil tank 101 and the second oil tank 102 of the lower shell 112 can be connected through the connecting groove 104, as well as the first oil tank 101 and the second oil tank 102 of the upper shell 111 can be connected.

[0053] In this invention, during the process of the rotor assembly 21 rotating and drawing the first oil tank 101 into the second oil tank 102, since a connecting groove 104 is provided between the first oil tank 101 and the second oil tank 102, the rotor assembly 21 of the oil pump can improve the smoothness of oil flow when performing differential pressure oil suction by rotating, thereby improving the oil suction force of the oil pump.

[0054] Combination Figure 7 and Figure 8 As shown, the connecting groove 104 includes a left groove 104a and a right groove 104b spaced apart from each other; one end of the left groove 104a is connected to the first oil groove 101, and the other end of the left groove 104a is connected to the second oil groove 102; one end of the right groove 104b is connected to the first oil groove 101, and the other end of the right groove 104b is connected to the second oil groove 102, so that the first oil groove 101, the second oil groove 102, the left groove 104a and the right groove 104b are connected to form an annular groove, so that after the oil enters the first oil groove 101, if the rotor assembly 21 starts to rotate and differential pressure oil suction is performed, a small part of the oil can circulate between the first oil groove 101, the second oil groove 102, the left groove 104a and the right groove 104b, ultimately improving the oil suction force of the oil pump.

[0055] For example, the annular groove formed by connecting the first oil groove 101, the second oil groove 102, the left groove 104a, and the right groove 104b can be a closed annular groove such as a circular annular groove or a square groove.

[0056] In this embodiment, the first oil groove 101, the left groove 104a, the second oil groove 102 and the right groove 104b are all concentric arc grooves, and are arranged in a clockwise or counterclockwise direction to facilitate rotation and oil suction with the rotor assembly 21.

[0057] In this embodiment, there are two oil grooves 101 and two oil grooves 102. Therefore, along the height direction of the oil pump housing 11, the cavity wall of the mounting cavity is provided with two connecting grooves 104. Each connecting groove 104 includes a left groove 104a and a right groove 104b that connect the first oil groove 101 and the second oil groove 102, so as to further improve the oil suction force of the oil pump.

[0058] It should be understood that the annular groove formed by the connection of the first oil groove 101, the second oil groove 102, the left groove 104a, and the right groove 104b of the upper shell 111 is projected onto the lower shell 112 within the annular groove formed by the connection of the first oil groove 101, the second oil groove 102, the left groove 104a, and the right groove 104b of the lower shell 112; and the annular groove formed by the connection of the first oil groove 101, the second oil groove 102, the left groove 104a, and the right groove 104b of the lower shell 112 is projected onto the upper shell 111 within the annular groove formed by the connection of the first oil groove 101, the second oil groove 102, the left groove 104a, and the right groove 104b of the upper shell 111.

[0059] Furthermore, the cross-sectional area of ​​the connecting groove 104 is smaller than the cross-sectional area of ​​the first oil groove 101 and smaller than the cross-sectional area of ​​the second oil groove 102.

[0060] It should be understood that the connecting groove 104 only needs to serve the function of connecting the first oil groove 101 and the second oil groove 102. Therefore, the cross-sectional area of ​​the connecting groove 104 should be as small as possible, smaller than the cross-sectional area of ​​the first oil groove 101 and smaller than the cross-sectional area of ​​the second oil groove 102.

[0061] For example, the depth of the first oil tank 101 and the second oil tank 102 are both H, and the width of the first oil tank 101 and the second oil tank 102 are both W; the depth of the connecting tank 104 is less than H / 5, and the width of the tank is W / 5.

[0062] Combination Figure 5 and Figure 7 As shown, the cavity wall of the mounting cavity is also provided with a third oil groove 103. The third oil groove 103 is located in the upper shell 111. The first oil groove 101, the left groove 104a, the second oil groove 102 and the right groove 104b are spaced apart from the third oil groove 103 and are all arranged around the third oil groove 103.

[0063] In this embodiment, the third oil groove 103 is a circular groove, and the first oil groove 101, the left groove 104a, the second oil groove 102, and the right groove 104b are all arranged around the third oil groove 103 as the center. The third oil groove 103 is used to communicate with the oil outlet of the oil cooler.

[0064] For example, combined Figure 9 As shown, the upper shell 111 is also provided with an oil pump return port 103a, and the third oil tank 103 is connected to the oil outlet of the oil cooler through the oil pump return port 103a.

[0065] It should be understood that after the cooling oil enters the oil cooler and is cooled, it can enter the third oil tank 103 through the oil outlet of the oil cooler.

[0066] Furthermore, combined Figure 7 As shown, the lower shell 112 is provided with a through hole 109, which is connected to the third oil groove 103 and the oil inlet of the motor.

[0067] It should be understood that the cooling oil, after being cooled by the oil cooler, can flow through the through hole 109 and into the oil inlet of the motor after entering the third oil tank 103.

[0068] Furthermore, combined Figure 9 As shown, the upper shell 111 is provided with an oil inlet groove 105 communicating with the first oil groove 101, an oil outlet groove 106 communicating with the second oil groove 102, and an oil return groove 107 communicating with the third oil groove 103.

[0069] Furthermore, combined Figure 7 and Figure 9 As shown, along the height direction of the oil pump housing 11: the oil inlet groove 105, the oil outlet groove 106, and the oil return groove 107 all include an oil inlet hole disposed at the bottom of the groove and a process opening a disposed opposite to the bottom of the groove; the oil pump also includes multiple oil passage sealing plates 113, which are correspondingly disposed in the oil inlet groove 105, the oil outlet groove 106, and the oil return groove 107, and are used to cover the corresponding process openings a of the oil inlet groove 105, the oil outlet groove 106, and the oil return groove 107. The oil inlet groove 105, the oil outlet groove 106, and the oil return groove 107 are all formed by die casting.

[0070] Furthermore, the bottom of the oil inlet groove 105, the bottom of the oil outlet groove 106, and the bottom of the oil return groove 107 are all spaced apart from the oil passage sealing plate 113, so that the oil inlet groove 105, the oil outlet groove 106, and the oil return groove 107 will not be blocked.

[0071] In this embodiment, the oil passage sealing plate 113 is welded to the upper shell 111 by friction welding. It also seals the process openings a corresponding to the oil inlet groove 105, oil outlet groove 106, and oil return groove 107, thereby preventing the process holes of the upper shell 111 from being exposed when it is installed on the machine.

[0072] Combination Figure 7 , Figure 10 and Figure 11 As shown, the oil pump also includes a sealing ring 114, which is connected to the upper housing 111 and the lower housing 112. The sealing ring 114 is located between the upper housing 111 and the lower housing 112 and is used to seal the connection between the upper housing 111 and the lower housing 112, thereby ensuring the sealing performance of the oil pump housing 11.

[0073] Furthermore, the end face of the upper shell 111 facing the lower shell 112 is provided with a first mounting ring groove, and the end face of the lower shell 112 facing the upper shell 111 is provided with a second mounting ring groove 108; one side of the sealing ring 114 is located in the first mounting ring groove, and the other side of the sealing ring 114 is located in the second mounting ring groove 108, thereby enabling better sealing performance of the oil pump housing 11.

[0074] In summary, in this application, after the oil is filtered by the filter element and enters the first oil tank 101, during the rotation of the rotor assembly 21, the oil is squeezed through the gap 201 within the rotor assembly 21 into the second oil tank 102. After being cooled by the oil cooler, it enters the third oil tank 103 and finally enters the motor rotor through the mounting journal of the motor rotor installed in the through hole 109. The presence of the connecting groove 104, which connects the first oil tank 101 and the second oil tank 102, improves the smoothness of oil flow when the rotor assembly 21 performs differential pressure oil suction during rotation, thereby increasing the oil pump's suction power.

[0075] Furthermore, to prevent the oil pump housing 11 from being exposed at the process opening a during machining, the process opening a can be sealed by welding the oil passage sealing plate 113 together using friction welding. Simultaneously, the upper shell portion 111 and the lower shell portion 112 of the oil pump housing 11, in conjunction with the sealing ring 114, can form a fully enclosed oil passage for the oil pump housing 11.

[0076] This embodiment also provides a vehicle, including an electric motor, an oil cooler, and the aforementioned oil pump, wherein the oil pump is connected to the electric motor and the oil cooler.

[0077] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0078] 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 one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified. The terms "some embodiments," "exemplarily," 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 this application.

[0079] The illustrative expressions of the terms used above do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0080] Although embodiments of this application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of the patent coverage of this application.

Claims

1. An oil pump, characterized in that, include: An oil pump housing is provided inside the oil pump housing. The cavity wall of the installation cavity is provided with a first oil groove and a second oil groove. The first oil groove and the second oil groove are spaced apart from each other. The first oil groove is connected to the oil inlet of the oil pump, and the second oil groove is connected to the oil inlet of the oil cooler. A rotor assembly is installed in the mounting cavity and is used to transfer oil from the first oil tank to the second oil tank. The cavity wall of the mounting cavity is also provided with a connecting groove, one end of which is connected to the first oil groove and the other end of which is connected to the second oil groove.

2. The oil pump according to claim 1, characterized in that, The connecting groove includes a left groove and a right groove that are spaced apart from each other; one end of the left groove is connected to the first oil groove, and the other end of the left groove is connected to the second oil groove; one end of the right groove is connected to the first oil groove, and the other end of the right groove is connected to the second oil groove.

3. The oil pump according to claim 2, characterized in that, Along the height direction of the oil pump housing: the cavity wall of the mounting cavity is provided with two first oil grooves, two second oil grooves and two connecting grooves; The two first oil grooves are arranged opposite each other along the axial direction of the rotor assembly; The two second oil grooves are arranged opposite each other along the axial direction of the rotor assembly; The two connecting slots are arranged opposite each other along the axial direction of the rotor assembly.

4. The oil pump according to claim 1, characterized in that, The cross-sectional area of ​​the connecting groove is smaller than the cross-sectional area of ​​the first oil groove and smaller than the cross-sectional area of ​​the second oil groove.

5. The oil pump according to claim 2, characterized in that, The first oil groove, the left groove, the second oil groove, and the right groove are all concentric arc grooves, and are arranged sequentially in a clockwise or counterclockwise direction.

6. The oil pump according to claim 2, characterized in that, The oil pump housing includes an upper shell portion and a lower shell portion disposed along the height direction of the oil pump housing, and the mounting cavity is located between the upper shell portion and the lower shell portion; two first oil grooves are correspondingly disposed in the upper shell portion and the lower shell portion; two second oil grooves are correspondingly disposed in the upper shell portion and the lower shell portion; and two connecting grooves are correspondingly disposed in the upper shell portion and the lower shell portion. The oil pump also includes a sealing ring, which is connected to the upper housing and the lower housing. The sealing ring is located between the upper housing and the lower housing and is used to seal the connection between the upper housing and the lower housing.

7. The oil pump according to claim 6, characterized in that, The end face of the upper shell portion facing the lower shell portion is provided with a first mounting ring groove, and the end face of the lower shell portion facing the upper shell portion is provided with a second mounting ring groove; One side of the sealing ring is located in the first mounting ring groove, and the other side of the sealing ring is located in the second mounting ring groove.

8. The oil pump according to claim 6, characterized in that, The cavity wall of the mounting cavity is also provided with a third oil groove, which is located in the upper shell. The first oil groove, the left groove, the second oil groove and the right groove are spaced apart from the third oil groove and are all arranged around the third oil groove. The third oil tank is used to connect with the oil outlet of the oil cooler; The lower housing is provided with a through hole, which is connected to the third oil groove and the oil inlet of the motor.

9. The oil pump according to claim 8, characterized in that, The upper shell is provided with an oil inlet groove communicating with the first oil groove, an oil outlet groove communicating with the second oil groove, and an oil return groove communicating with the third oil groove. Along the height direction of the oil pump housing: the oil inlet groove, the oil outlet groove, and the oil return groove all include an oil inlet hole disposed at the bottom of the groove and a process opening disposed opposite to the bottom of the groove; The oil pump also includes multiple oil passage sealing plates, which are respectively arranged in the oil inlet groove, the oil outlet groove and the oil return groove, and are used to cover the corresponding process openings of the oil inlet groove, the oil outlet groove and the oil return groove. The bottom of the oil inlet groove, the bottom of the oil outlet groove, and the bottom of the oil return groove are all spaced apart from the oil passage sealing plate.

10. A vehicle, characterized in that, It includes a motor, an oil cooler, and an oil pump as described in any one of claims 1-9, wherein the oil pump is connected to the motor and the oil cooler.

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