Hybrid power box and vehicle power system

Abstract

The invention discloses a hybrid power box and a vehicle power system, and relates to the technical field of vehicle power system cooling, the hybrid power box comprises an oil pan and a box shell body, the box shell body is arranged on the oil pan, an oil return opening communicated with the oil pan is formed in the box shell body, an oil blocking part is arranged in the box shell body, the oil blocking part is arranged above the oil return opening, and the oil return opening is communicated with the oil pan. The oil pan is arranged so that cooling lubricating oil flowing out of the tank shell can be conveniently collected, an oil blocking part is arranged in the tank shell, the oil blocking part is arranged above the oil return opening and right faces the oil return opening, and therefore when a vehicle is in a limited inclination state, the cooling lubricating oil can flow out of the oil pan through the oil blocking part, and the cooling lubricating oil can flow out of the oil pan through the oil return opening. The cooling lubricating oil flowing out of the oil return opening is stopped, so that the cooling lubricating oil can be reserved in the hybrid power box, the risk that the cooling oil flows out of the hybrid power box can be effectively reduced, and the problem that the cooling lubricating oil in an existing vehicle hybrid power box is prone to flowing out of the box body in a limit inclination state is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling a vehicle power system, and in particular to a hybrid box and a vehicle power system. Background Art

[0002] The vehicle inclination angle of an off-road vehicle under actual working conditions is usually larger than that of an ordinary private car. This is because the design focus of an off-road vehicle is to provide better off-road performance and passability. When an off-road vehicle climbs a steep slope, it may even be in a state of extreme inclination. At this time, the cooling lubricating oil in the existing hybrid box is easy to flow out of the box when the box is in a state of extreme inclination and will not be retained in the box, causing inconvenience to the cooling and lubrication of the entire hybrid box. Summary of the invention

[0003] The main purpose of the present invention is to provide a hybrid and vehicle power system, aiming to solve the problem that the cooling lubricating oil in the hybrid box of the existing vehicle is easy to flow out of the box under extreme tilting state.

[0004] To achieve the above-mentioned purpose, the hybrid box proposed by the present invention comprises:

[0005] oil sump; and,

[0006] A box shell is arranged on the oil pan, and an oil return port connected to the oil pan is formed on the box shell. An oil baffle is provided in the box shell, and the oil baffle is arranged above the oil return port and directly opposite to the oil return port to baffle the oil on the oil pan that pours out from the oil return port.

[0007] In one embodiment, the oil baffle portion includes an oil baffle plate disposed in the tank housing.

[0008] In one embodiment, the hybrid case further comprises a motor barrel, in which a stator assembly is interference-fitted.

[0009] In one embodiment, a first oil return groove is formed in the motor barrel, and a second oil return groove is formed in the box housing, and both the first oil return groove and the second oil return groove are connected to the oil return port;

[0010] A cooling oil circuit is formed in the motor cylinder, and an outlet of the cooling oil circuit is connected to the first oil return groove.

[0011] In one embodiment, the inner cylinder wall of the motor cylinder is provided with a cooling oil groove extending along the circumference of the motor cylinder, and a plurality of cooling oil grooves are provided and spaced apart along the axial direction of the motor cylinder;

[0012] The first oil return groove is disposed at the bottom of the inner cylinder wall of the motor cylinder and is extended along the axial direction of the motor cylinder. The first oil return groove is connected to the plurality of cooling oil grooves.

[0013] The cooling oil circuit includes a plurality of cooling oil groove cavities.

[0014] In one embodiment, an annular tube is further provided in the motor cylinder, and the annular tube is provided corresponding to the coil of the stator assembly;

[0015] The cooling oil circuit includes the inner cavity of the annular tube.

[0016] In one embodiment, two annular tubes are provided, and along the axial direction of the motor barrel, a plurality of cooling oil grooves are arranged between the two annular tubes.

[0017] In one embodiment, an oil injection nozzle is provided on the annular pipe.

[0018] In one embodiment, a rotor assembly is also rotatably mounted in the stator assembly, and the rotor assembly includes a rotating shaft;

[0019] An axial core tube is also provided in the motor cylinder, and an outlet of the axial core tube is arranged corresponding to the rotating shaft;

[0020] The cooling oil circuit includes the inner cavity of the axial tube.

[0021] The present invention further provides a vehicle power system, comprising the above-mentioned hybrid box, wherein the hybrid box comprises:

[0022] oil sump; and,

[0023] A box shell is arranged on the oil pan, and an oil return port connected to the oil pan is formed on the box shell. An oil baffle is provided in the box shell, and the oil baffle is arranged above the oil return port and directly opposite to the oil return port to baffle the oil on the oil pan that pours out from the oil return port.

[0024] In the technical solution of the present invention, the oil pan is provided to collect the cooling lubricating oil flowing out of the tank shell, the tank shell is provided on the oil pan, and an oil return port connected to the oil pan is formed on the tank shell to connect the oil pan with the tank shell so that the cooling lubricating oil in the tank shell can flow into the oil pan, and an oil baffle is provided in the tank shell, the oil baffle is provided above the oil return port and is arranged opposite to the oil return port to block the cooling lubricating oil flowing out of the oil return port when the vehicle is in an extreme tilt state, so that the cooling lubricating oil can be retained in the hybrid box, which can effectively reduce the risk of cooling oil flowing out of the hybrid box, thereby solving the problem that the cooling oil and lubricating oil in the hybrid box of the existing vehicle are easy to flow out of the box body under extreme tilt state. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of an embodiment of a hybrid box provided by the present invention;

[0027] Figure 2 A schematic structural diagram of another embodiment of a hybrid box provided by the present invention;

[0028] Figure 3 A structural schematic diagram of another embodiment of a hybrid box provided by the present invention;

[0029] Figure 4 This is a schematic structural diagram of another embodiment of the hybrid box provided by the present invention.

[0030] Description of Figure Numbers:

[0031] 100. Hybrid case; 1. Oil pan; 2. Case shell; 21. Oil return port; 22. Second oil return tank; 3. Oil baffle; 4. Motor cylinder; 41. First oil return tank; 42. Cooling oil circuit; 421. Cooling oil tank; 422. Annular pipe; 423. Axial pipe.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The vehicle inclination angle of an off-road vehicle under actual working conditions is usually larger than that of an ordinary private car. This is because the design focus of an off-road vehicle is to provide better off-road performance and passability. When an off-road vehicle climbs a steep slope, it may even be in a state of extreme inclination. At this time, the cooling lubricating oil in the existing hybrid box is easy to flow out of the box when the box is in a state of extreme inclination and will not be retained in the box, causing inconvenience to the cooling and lubrication of the entire hybrid box.

[0037] Based on this, the present invention proposes a hybrid box for a vehicle power system, which aims to solve the problem that the cooling lubricating oil in the hybrid box of an existing vehicle is easy to flow out of the box under extreme tilt conditions. Figures 1 to 4 This is a schematic structural diagram of the hybrid box provided by the present invention.

[0038] See also Figures 1 to 4 In one embodiment of the present invention, the hybrid box 100 includes an oil pan 1 and a box shell 2, the box shell 2 is arranged on the oil pan 1, an oil return port 21 connected to the oil pan 1 is formed on the box shell 2, an oil blocking portion 3 is provided in the box shell 2, the oil blocking portion 3 is arranged above the oil return port 21 and is arranged directly opposite to the oil return port 21 to block the oil on the oil pan 1 that pours out from the oil return port 21.

[0039] In the technical solution of the present invention, the oil pan 1 is provided to collect the cooling lubricating oil flowing out of the tank shell 2. The tank shell 2 is provided on the oil pan 1. An oil return port 21 connected to the oil pan 1 is formed on the tank shell 2 to connect the oil pan 1 with the tank shell 2 so that the cooling lubricating oil in the tank shell 2 can flow into the oil pan 1. At the same time, an oil baffle 3 is provided in the tank shell 2. The oil baffle 3 is provided above the oil return port 21 and is directly opposite to the oil return port 21. When the vehicle is in an extreme tilt state, the cooling lubricating oil flowing out of the oil return port 21 is blocked so that the cooling lubricating oil can be retained in the hybrid box 100, which can effectively reduce the risk of cooling oil flowing out of the hybrid box 100, thereby solving the problem that the cooling oil lubricating oil in the hybrid box 100 of the existing vehicle is easy to flow out of the box body under the extreme tilt state.

[0040] It should be noted that the oil pan 1 is formed with a accommodating cavity connected to the oil return port 21 for accommodating the cooling lubricating oil flowing in from the oil return port 21. Furthermore, there is no limitation on the molding method of the oil pan 1 and the tank shell 2. The oil pan 1 and the tank shell 2 can be integrally molded or separately molded. In particular, the oil pan 1 and the tank shell 2 are separately molded. In this way, the separate molding is adopted to reduce the molding difficulty of the hybrid box 100 and facilitate manufacturing. Furthermore, there are several ways to connect the oil pan 1 and the tank shell 2. The oil pan 1 and the tank shell 2 can be welded or screwed, etc., and the present invention does not limit this.

[0041] There are many types of oil blocking parts 3. For example, the oil blocking part 3 can be an oil blocking rib or an oil blocking block, etc. The present invention does not limit this. However, the oil blocking range of the oil blocking rib is limited, the volume of the oil blocking block is large, and the space inside the box shell 2 is limited, which is easy to interfere with other structures inside the box shell 2. Therefore, in one embodiment of the present invention, please refer to Figure 1 The oil baffle portion 3 includes an oil baffle plate arranged in the box shell 2. In this way, the oil baffle plate is used, which is convenient for being arranged in the box shell 2 and can also make the oil baffle portion 3 have a sufficient oil baffle range, thereby ensuring the oil baffle effect of the oil baffle portion 3.

[0042] Furthermore, the setting manner of the oil baffle portion 3 is not limited, and the oil baffle plate can be a flat plate, or an arc-shaped plate, etc., as long as it can block the oil. The present invention does not limit this. Specifically, in this embodiment, the oil baffle plate is arranged in an arc shape. In this way, an arc-shaped arrangement is adopted to match the shape of the box shell 2.

[0043] In one embodiment of the present invention, there are multiple ways to form the oil baffle portion 3 and the box shell 2. The oil baffle portion 3 and the box shell 2 may be formed separately or integrally, and the present invention does not limit this. Specifically, in the present embodiment, the box shell 2 and the oil baffle plate are integrally formed. Since the structure of the oil baffle portion 3 is relatively simple, if it is formed separately, the oil baffle plate needs to be assembled with the box shell 2 later, which is rather cumbersome. Therefore, the box shell 2 and the oil baffle plate are integrally formed, which can not only improve the connection strength between the oil baffle plate and the box shell 2, but also save subsequent assembly steps and improve efficiency.

[0044] In one embodiment of the present invention, the hybrid case 100 also includes a motor barrel 4, in which a stator assembly is interference-fitted. Thus, by providing the motor barrel 4 so as to install the stator assembly, and at the same time, the motor barrel 4 and the stator assembly are interference-fitted. On the one hand, the stator assembly can be fixed in the motor barrel 4 to prevent the stator assembly from being separated from the motor barrel 4. On the other hand, the stator assembly can be fitted in the motor barrel 4, thereby reducing the thermal resistance between the stator assembly and the motor barrel 4, and improving the heat exchange efficiency between the motor barrel 4 and the stator assembly, thereby helping to improve the cooling effect of the hybrid case 100.

[0045] It should be noted that a driving motor is provided in the motor barrel 4, and the driving motor includes the stator assembly, so that the driving motor can be connected to the hybrid case 100, so that the driving motor can drive the gear assembly in the hybrid case 100 to rotate. Furthermore, there are many ways to connect the motor barrel 4 to the case housing 2, and the motor barrel 4 and the case housing 2 can be connected by welding or bolts, etc., which is not limited in the present invention. Specifically, in this embodiment, the motor barrel 4 can be detachably installed on the case housing 2. In this way, a detachable connection method is adopted so that the motor barrel 4 and the case housing 2 can be disassembled and assembled, which is convenient for subsequent maintenance or replacement.

[0046] Furthermore, in order to cool the stator assembly of the motor barrel 4, a first oil return groove 41 is formed in the motor barrel 4, and a second oil return groove 22 is formed in the box shell 2. The first oil return groove 41 and the second oil return groove 22 are both connected to the oil return port 21. A cooling oil circuit 42 is formed in the motor barrel 4, and the outlet of the cooling oil circuit 42 is connected to the first oil return groove 41. In this way, the first oil return groove 41 is provided to collect the cooling lubricating oil in the motor barrel 4, and the second oil return groove 22 is provided to collect the cooling lubricating oil of the box shell 2. At the same time, the first oil return groove 41 and the second oil return groove 22 are both connected to the oil return port 21, so that the cooling lubricating oil in the first oil return groove 41 and the second oil return groove 22 can flow into the oil pan 1 through the oil return port 21, and the cooling oil circuit 42 is provided to take away the heat in the motor barrel 4 to prevent the heat from accumulating in the motor barrel 4, so as to cool the stator assembly in the motor barrel 4 and prevent the driving motor in the motor barrel 4 from overheating.

[0047] It should be noted that the first oil return groove 41 and the second oil return groove 22 can be connected to the oil pan 1 respectively so that the cooling lubricating oil in the motor barrel 4 and the box shell 2 can flow into the oil pan 1 respectively. However, if it is configured in this way, the oil pan 1 needs to be extended to the motor barrel 4 to connect the first oil return groove 41 with the oil pan 1, which will increase the volume of the oil pan 1 and easily interfere with other structures of the vehicle. Therefore, the first oil return groove 41 and the second oil return groove 22 are both connected to the return port so that the first oil return groove 41 is connected to the second oil return groove 22, so that the cooling lubricating oil in the first oil return groove 41 and the second oil return groove 22 can flow into the oil pan 1 through the oil return port 21, so as to simplify the structure of the cooling oil circuit 42 of the hybrid box 100.

[0048] In one embodiment of the present invention, the inner cylinder wall of the motor barrel 4 is provided with a cooling oil groove 421 extending along the circumferential direction of the motor barrel 4, and the cooling oil grooves 421 are provided in plurality and are arranged at intervals along the axial direction of the motor barrel 4. The first oil return groove 41 is provided at the bottom of the inner cylinder wall of the motor barrel 4 and is extended along the axial direction of the motor barrel 4. The first oil return groove 41 is connected to the plurality of cooling oil grooves 421, and the cooling oil circuit 42 includes a plurality of groove cavities of the cooling oil grooves 421. In this way, by providing a plurality of cooling oil grooves 421, the cooling range of the cooling oil circuit 42 is expanded, which is beneficial to improving the cooling effect of the motor barrel 4.

[0049] It should be noted that the number of the cooling oil grooves 421 is not limited, for example, it can be two, three, four or five, etc., and the present invention does not limit this. Furthermore, there are various arrangements of the multiple cooling oil grooves 421. For example, the multiple cooling oil grooves 421 can be evenly distributed along the axial direction of the motor barrel 4, or can be arranged in an increasing or decreasing manner along the axial direction of the motor barrel 4 so that the distance between two adjacent cooling oil grooves 421 gradually increases or decreases. It can be adjusted according to needs, and the present invention does not limit this.

[0050] Theoretically, the more the number of cooling oil grooves 421 is, the better the cooling effect is. However, the more the number of cooling oil grooves 421 is, the more complex the cooling oil circuit 42 is, and the higher the manufacturing difficulty is. Therefore, in this embodiment, three cooling oil grooves 421 are provided, which can not only ensure the cooling effect of the motor barrel 4, but also reduce the manufacturing difficulty of the motor barrel 4, facilitate manufacturing, and help reduce the manufacturing cost of the motor barrel 4. In particular, the inner barrel wall of the motor barrel 4 is provided with a connecting oil groove extending along the axial direction of the motor barrel 4, and the connecting oil groove connects multiple cooling oil grooves 421, so that the multiple cooling oil grooves 421 are connected, so that the cooling oil grooves 421 can be supplied with oil through the same oil supply pipe. Further, multiple connecting oil grooves are provided, and multiple connecting oil grooves are arranged at intervals along the circumference of the motor barrel 4. In this way, by providing multiple connecting oil grooves, the flow of cooling lubricating oil between different cooling oil grooves 421 is facilitated, so as to take away the heat of the motor barrel 4 in time, thereby helping to improve the cooling effect of the motor barrel 4.

[0051] In one embodiment of the present invention, an annular tube 422 is further provided in the motor barrel 4. The annular tube 422 is provided corresponding to the coil of the stator assembly. The cooling oil circuit 42 includes the inner tube cavity of the annular tube 422. Since the heat generated by the coil of the stator assembly is relatively high when the drive motor is working, the annular tube 422 is provided to cool the coil of the stator assembly to prevent the coil of the stator assembly from overheating. Furthermore, two annular tubes 422 are provided. Along the axial direction of the motor barrel 4, a plurality of cooling oil grooves 421 are arranged between the two annular tubes 422. In this way, by providing two annular tubes 422, the coils of the stator assembly at both ends of the motor barrel 4 are cooled to match the stator assembly in the motor barrel 4, which helps to improve the cooling effect of the cooling oil circuit 42.

[0052] It should be noted that there are many ways to set the two annular tubes 422 and the multiple cooling oil grooves 421. The two annular tubes 422 can be set between the multiple cooling oil grooves 421, or the multiple cooling oil grooves can be set between the two annular tubes 422. It can also be that one annular tube 422 is set between the multiple cooling oil grooves 421, and the other annular tube 422 is set on the outside of the multiple cooling oil grooves 421, etc. The present invention does not limit this. However, since the cooling oil grooves 421 are mainly used to cool the motor barrel 4, and the annular tube 422 is mainly used to cool the coils of the stator assembly, the multiple cooling oil grooves 421 are set between the two annular tubes 422, so that the two annular tubes 422 can be set to cool the coils of the stator assembly at both ends of the motor barrel 4, so that the setting position of the annular tube 422 can be adapted to the position of the coils of the stator assembly, so that the cooling oil circuit 42 can take away the heat of the coils of the stator assembly in time, thereby ensuring the cooling effect of the hybrid box 100.

[0053] In one embodiment of the present invention, an oil spray nozzle is provided on the annular tube 422. Thus, by providing the oil spray nozzle, the coil of the stator assembly is directly sprayed to cool down. Compared with cooling the coil of the stator assembly by cooling the motor barrel 4, the spraying method is adopted so that the cooling lubricating oil can directly cool down the coil of the stator assembly, which can greatly reduce the thermal resistance in the heat transfer process, thereby helping to improve the cooling effect of the hybrid case 100. Further, the number of the oil spray nozzles is not limited, and can be one or more. Specifically, in this embodiment, the oil spray nozzles are provided in plurality, and the plurality of the oil spray nozzles are provided at intervals along the circumference of the motor barrel 4. Thus, by providing the plurality of the oil spray nozzles, the coil of the stator assembly circumferentially of the motor barrel 4 is cooled, so that the temperature field of the coil of the stator assembly in the motor barrel 4 can be evenly distributed along the circumference of the motor barrel 4, so as to prevent the coil of the stator assembly from being locally overheated.

[0054] In one embodiment of the present invention, a rotor assembly is rotatably mounted in the stator assembly, the rotor assembly includes a rotating shaft, and an axial tube 423 is also provided in the motor barrel 4, the outlet of the axial tube 423 is arranged corresponding to the rotating shaft, and the cooling oil circuit 42 includes a tube cavity of the axial tube 423. In this way, the axial tube 423 is provided to spray cooling lubricating oil on the rotating shaft so that the cooling lubricating oil can directly cool the rotating shaft, which can greatly reduce the thermal resistance in the heat transfer process, thereby helping to improve the cooling effect of the hybrid box 100.

[0055] Please refer to Figures 1 to 4In one embodiment of the present invention, the hybrid case 100 includes an oil pan 1 and a case shell 2, the case shell 2 is arranged on the oil pan 1, an oil return port 21 connected to the oil pan 1 is formed on the case shell 2, an oil baffle 3 is arranged in the case shell 2, the oil baffle 3 is arranged above the oil return port 21 and is arranged directly opposite to the oil return port 21 to baffle the oil on the oil pan 1 pouring out from the oil return port 21, the oil baffle 3 includes an oil baffle plate arranged in the case shell 2, the hybrid case 100 includes an oil pan 1 and a case shell 2, the case shell 2 includes an oil baffle plate arranged in the case shell 2, and the hybrid case 1 includes an oil pan 1 and a case shell 2. The gearbox 100 also includes a motor barrel 4, in which a stator assembly is interference-fitted, a first oil return groove 41 is formed in the motor barrel 4, a second oil return groove 22 is formed in the housing 2, the first oil return groove 41 and the second oil return groove 22 are both connected to the oil return port 21, a cooling oil path 42 is formed in the motor barrel 4, the outlet of the cooling oil path 42 is connected to the first oil return groove 41, and the inner barrel wall of the motor barrel 4 is provided with a cooling oil groove 421 extending along the circumference of the motor barrel 4 The cooling oil grooves 421 are provided in plurality and are spaced apart along the axial direction of the motor barrel 4. The first oil return groove 41 is opened at the bottom of the inner barrel wall of the motor barrel 4 and is extended along the axial direction of the motor barrel 4. The first oil return groove 41 is connected to the plurality of cooling oil grooves 421. The cooling oil circuit 42 includes a plurality of slot cavities of the cooling oil grooves 421. An annular tube 422 is further provided in the motor barrel 4. The annular tube 422 is provided corresponding to the coil of the stator assembly. The cooling oil circuit 42 includes the The inner cavity of the annular tube 422, two annular tubes 422 are provided, and along the axial direction of the motor barrel 4, multiple cooling oil grooves 421 are arranged between the two annular tubes 422, and an oil nozzle is provided on the annular tube 422. A rotor assembly is also rotatably installed in the stator assembly, and the rotor assembly includes a rotating shaft. An axial tube 423 is also provided in the motor barrel 4, and the outlet of the axial tube 423 is arranged corresponding to the rotating shaft. The cooling oil circuit 42 includes the inner cavity of the tube of the axial tube 423.

[0056] In this embodiment, the oil baffle portion 3 is provided to block the cooling lubricating oil flowing out of the oil return port 21 when the vehicle is in an extreme tilt state, so that the cooling lubricating oil can be retained in the hybrid case 100, which can effectively reduce the risk of the cooling oil flowing out of the hybrid case 100. Furthermore, the oil baffle portion 3 adopts an oil baffle plate, which is convenient for being provided in the case shell 2 and can also ensure that the oil baffle portion 3 has a sufficient oil baffle range, thereby ensuring the oil baffle effect of the oil baffle portion 3. The motor barrel 4 is provided to facilitate the installation of the stator assembly, and the motor barrel 4 and the stator assembly adopt an interference fit, which can fix the stator assembly in the The motor barrel 4 is provided to prevent the stator assembly from being separated from the motor barrel 4. On the other hand, the stator assembly can be fitted in the motor barrel 4, reducing the thermal resistance between the stator assembly and the motor barrel 4, and improving the heat exchange efficiency between the motor barrel 4 and the stator assembly, thereby helping to improve the cooling effect of the hybrid case 100. Furthermore, the first oil return groove 41 is provided to collect the cooling lubricating oil in the motor barrel 4, and the second oil return groove 22 is provided to collect the cooling lubricating oil of the case housing 2. At the same time, the first oil return groove 41 and the second oil return groove 22 are both connected to the oil return port 21, so that the first oil return groove 41 can be connected to the second oil return groove 22. The cooling lubricating oil in the oil groove 41 and the second oil return groove 22 can flow into the oil pan 1 through the oil return port 21, and the cooling oil circuit 42 is provided to take away the heat in the motor barrel 4 to prevent the heat from accumulating in the motor barrel 4, so as to cool the stator assembly in the motor barrel 4 to prevent the drive motor in the motor barrel 4 from overheating. Furthermore, by providing a plurality of cooling oil grooves 421 to expand the cooling range of the cooling oil circuit 42, it is beneficial to improve the cooling effect of the motor barrel 4, and by providing the annular pipe 422, the coil of the stator assembly is cooled to prevent the coil of the stator assembly from overheating, and at the same time By setting the oil spray nozzle, the coil of the stator assembly can be directly sprayed for cooling. Compared with cooling the coil of the stator assembly by cooling the motor barrel 4, a spraying method is adopted so that the cooling lubricating oil can directly cool the coil of the stator assembly, which can greatly reduce the thermal resistance in the heat transfer process, thereby helping to improve the cooling effect of the hybrid case 100. In addition, by setting the axial tube 423, cooling lubricating oil is sprayed onto the rotating shaft, so that the cooling lubricating oil can directly cool the rotating shaft, which can greatly reduce the thermal resistance in the heat transfer process, thereby helping to improve the cooling effect of the hybrid case 100.

[0057] In order to achieve the above-mentioned purpose, the present invention further proposes a vehicle power system, which includes a hybrid box 100. The specific structure of the hybrid box 100 refers to the above-mentioned embodiment. Since the vehicle power system adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0058] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention and the drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A hybrid box, characterized in that: include: Oil pan; as well as, A box shell is arranged on the oil pan, and an oil return port connected to the oil pan is formed on the box shell. An oil baffle is provided in the box shell, and the oil baffle is arranged above the oil return port and directly opposite to the oil return port to baffle the oil on the oil pan that pours out from the oil return port.

2. The hybrid box according to claim 1, characterized in that: The oil baffle portion includes an oil baffle plate arranged in the box housing.

3. The hybrid box according to claim 1, characterized in that: The hybrid case also includes a motor barrel, in which a stator assembly is interference-fitted.

4. The hybrid case according to claim 3, characterized in that: A first oil return groove is formed in the motor barrel, and a second oil return groove is formed in the box housing, and the first oil return groove and the second oil return groove are both connected to the oil return port; A cooling oil circuit is formed in the motor cylinder, and an outlet of the cooling oil circuit is connected to the first oil return groove.

5. The hybrid case according to claim 4, characterized in that: The inner cylinder wall of the motor cylinder is provided with a cooling oil groove extending along the circumference of the motor cylinder, and a plurality of cooling oil grooves are provided and spaced apart along the axial direction of the motor cylinder; The first oil return groove is disposed at the bottom of the inner cylinder wall of the motor cylinder and is extended along the axial direction of the motor cylinder. The first oil return groove is connected to the plurality of cooling oil grooves. The cooling oil circuit includes a plurality of cooling oil groove cavities.

6. The hybrid case according to claim 5, characterized in that: An annular tube is also provided in the motor cylinder, and the annular tube is arranged corresponding to the coil of the stator assembly; The cooling oil circuit includes the inner cavity of the annular tube.

7. The hybrid case according to claim 6, characterized in that: Two annular tubes are provided, and along the axial direction of the motor barrel, a plurality of cooling oil grooves are arranged between the two annular tubes.

8. The hybrid case according to claim 6, characterized in that: An oil injection nozzle is arranged on the annular pipe.

9. The hybrid case according to claim 4, characterized in that: A rotor assembly is also rotatably mounted in the stator assembly, and the rotor assembly includes a rotating shaft; An axial core tube is also provided in the motor cylinder, and an outlet of the axial core tube is arranged corresponding to the rotating shaft; The cooling oil circuit includes the inner cavity of the axial tube.

10. A vehicle power system, characterized in that: Comprising a hybrid case as claimed in any one of claims 1 to 9.

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