Oil sump structure, electric drive assembly and vehicle

Abstract

The oil sump structure comprises a body and a partition, the body is provided with an oil storage cavity, the partition is arranged in the oil storage cavity and is used for separating the oil storage cavity into a first oil storage cavity and a second oil storage cavity, the partition is provided with a mounting position for mounting an oil pump and two suction filter ports, and the first oil storage cavity and the second oil storage cavity are used for being communicated with an oil inlet of the oil pump through the two suction filter ports respectively. In this way, the oil level in the oil sump can be balanced in the working condition of a large inclination angle of the vehicle, the oil pump is prevented from being suctioned empty, and the stability of oil supply is improved.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle technology, and more specifically, to an oil pan structure, an electric drive assembly, and a vehicle. Background Technology

[0002] In the dual-motor electric drive assembly used in new energy vehicles, the left and right electric drives share the same oil pan. The oil is drawn from the oil pan by the corresponding oil pump and sent to the corresponding cooling or lubrication points of the left and right electric drives for circulation cooling and lubrication. However, under the condition of large vehicle tilt angle, the oil distribution in the oil pan of the electric drive assembly is prone to unevenness, which may cause the oil pump to suck up air. As a result, the left and right electric drives in the electric drive assembly have insufficient cooling and lubrication. Utility Model Content

[0003] The purpose of this disclosure is to provide an oil pan structure, an electric drive assembly, and a vehicle, wherein the oil pan structure can balance the oil level in the oil pan under the condition of a large tilt angle of the vehicle, ensure that the oil pump does not suck in cavitation, and improve the stability of oil supply, so as to at least partially solve the problems in the related art.

[0004] To overcome the problems existing in related technologies, a first aspect of this disclosure provides an oil pan structure, including: a body, the body having an oil storage chamber, and a separator disposed in the oil storage chamber to divide the oil storage chamber into a first oil storage chamber and a second oil storage chamber. The separator has a mounting position for installing an oil pump and two suction ports. The first oil storage chamber and the second oil storage chamber are respectively connected to the oil inlet of the oil pump through the two suction ports. This allows for balancing the oil level in the oil pan under conditions of large vehicle tilt angles, ensuring no cavitation in the oil pump and improving the stability of oil supply.

[0005] In some possible implementations, the suction port is located at the lowest point of the body. This facilitates oil backflow and accumulation in the suction port, reduces oil retention in the oil storage chamber, and allows the oil pump to draw more oil.

[0006] In some possible implementations, the two suction ports are interconnected. This interconnection allows for the balancing of the oil in the first and second oil reservoirs when the vehicle is not in motion, ensuring that the oil levels in both reservoirs are approximately equal.

[0007] In some possible implementations, the first oil reservoir and the second oil reservoir are arranged symmetrically about the separator. Thus, by symmetrically arranging the first and second oil reservoirs about the separator, the oil volumes of the first and second oil reservoirs can be made to be approximately equal.

[0008] In some possible implementations, the isolation element further includes a first oil passage, the inlet of which is connected to the outlet of the oil pump. Thus, by providing the first oil passage and connecting its inlet to the outlet of the oil pump, it is convenient for the oil pump to draw oil and then deliver it through the first oil passage to the corresponding oil supply passage to supply oil to the lubrication or cooling points of the motor or reducer in the vehicle.

[0009] In some possible implementations, the isolation element further includes a second oil passage, the inlet of which is connected to the two suction / filter ports, and the outlet of which is connected to the inlet of the oil pump. Thus, the second oil passage facilitates the oil pump drawing oil from the first and second oil storage chambers through the suction / filter ports and the second oil passage.

[0010] In some possible implementations, the mounting position is located outside the oil reservoir and includes a receiving cavity for accommodating the oil pump. The receiving cavity has a first oil port and a second oil port. The first oil port connects the oil pump's outlet to the first oil passage's inlet, and the second oil port connects the oil pump's inlet to the second oil passage's outlet. Thus, the mounting position's location outside the oil reservoir facilitates the installation and removal of the oil pump. The first oil port within the receiving cavity facilitates communication between the oil pump's outlet and the first oil passage's inlet, and the second oil port within the receiving cavity facilitates communication between the oil pump's inlet and the second oil passage's outlet. This allows the oil pump to easily discharge oil from the first and second oil reservoirs and deliver it through the first oil passage to the corresponding oil supply passage, supplying oil to the lubrication or cooling points of the vehicle's motor or reducer.

[0011] In some possible implementations, the separator further includes an oil level balancing hole located above the mounting position. Thus, the oil level balancing hole allows for balancing the oil levels in the first and second oil reservoirs under high tilt angle conditions.

[0012] In some possible implementations, the cross-sectional area of ​​the oil reservoir gradually decreases from the top to the bottom. This facilitates the concentration of oil in the reservoir towards the bottom, making it easier for the oil pump to draw oil from the corresponding suction port.

[0013] In some possible implementations, the bottom wall of the oil storage chamber has at least one inclined surface structure that slopes downwards from the edge of the oil storage chamber toward the suction port. Thus, the inclined surface structure on the bottom wall of the oil storage chamber facilitates the accumulation of oil at the bottom of the chamber, making it easier for the oil pump to draw oil from the corresponding suction port.

[0014] In some possible implementations, the inclined structure includes two first inclined surfaces, which are respectively disposed in the first oil storage chamber and the second oil storage chamber, and are symmetrically arranged about the separator. Thus, the arrangement of the two first inclined surfaces facilitates the accumulation of oil at the bottom of the oil storage chamber, making it easier for the oil pump to draw oil from the corresponding suction port.

[0015] In some possible implementations, the inclined structure further includes two second inclined surfaces, which are respectively disposed between the two first inclined surfaces and the spacer; the two second inclined surfaces are symmetrically arranged about the spacer. Thus, the second inclined surfaces disposed between the first inclined surfaces and the spacer further facilitate the accumulation of oil at the bottom of the oil storage chamber, making it easier for the oil pump to draw oil from the corresponding suction port.

[0016] In some possible implementations, the separator is integrally formed with the body. This integral forming of the separator and body improves the structural strength of the oil pan mechanism.

[0017] A second aspect of this disclosure provides an electric drive assembly including the oil pan structure described above.

[0018] In some possible implementations, the electric drive assembly further includes a housing and an oil pump, with the oil pan structure formed at the bottom of the housing and the oil pump located at the mounting position of the isolator in the oil pan structure. Thus, by incorporating a housing and oil pump into the electric drive assembly, with the oil pan structure formed at the bottom of the housing and the oil pump positioned at the mounting position of the isolator, the integration of the electric drive assembly is improved. Furthermore, it facilitates the collection of oil within the housing by gravity into the oil pan structure, and the oil pump draws the oil and delivers it to the corresponding oil supply channels to supply oil to the corresponding lubrication and / or cooling points in the electric drive assembly.

[0019] In some possible implementations, the electric drive assembly includes two drive motors disposed within the housing and spaced apart, and a reducer for drivingly connecting the two drive motors. The electric drive assembly also includes an oil supply passage and an oil return passage. The oil supply passage communicates with the outlet of a first oil passage in the oil pan structure to deliver oil to the inlets of the two drive motors and the reducer. The oil return passage communicates with the outlets of the two drive motors and the reducer to return the lubricated and cooled oil to the oil storage chamber of the oil pan structure. Thus, through the two drive motors and the reducer housed within the housing, and the oil supply and return passages in the electric drive assembly, the oil pump draws oil from the oil storage chamber of the oil pan and delivers it through the first oil passage to the oil supply passage to supply oil to the drive motors and the reducer. The oil return passage returns the lubricated and cooled oil to the oil storage chamber in the oil pan structure.

[0020] This disclosure provides a third aspect of a vehicle, including the aforementioned electric drive assembly.

[0021] The above technical solution divides the oil reservoir into a first and a second reservoir by installing an isolation component in the middle of the oil pan structure. An oil pump mounting position is provided on the isolation component for easy pump installation. Two suction ports are also provided on the isolation component, allowing the oil pump inlet to connect to the first and second reservoirs respectively. This prevents cavitation caused by oil tilting during high-angle driving, ensuring sufficient oil is always drawn from both reservoirs and delivered to the corresponding lubrication or cooling points in the vehicle's electric drive assembly, thus improving oil supply stability.

[0022] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the accompanying drawings...

[0024] Figure 1 This is a schematic diagram of an electric drive assembly provided in an exemplary embodiment of this disclosure.

[0025] Figure 2 This is an internal schematic diagram of the oil pan structure provided in an exemplary embodiment of this disclosure.

[0026] Figure 3 yes Figure 2 Front view diagram.

[0027] Figure 4 This is a side view of the oil pan structure provided in an exemplary embodiment of this disclosure.

[0028] Explanation of reference numerals in the attached figures 1-Main body; 11-Oil storage chamber; 12-First oil storage chamber; 13-Second oil storage chamber; 14-Sloping structure; 15-First sloping surface; 16-Second sloping surface; 2-Isolation component; 21-Mounting position; 22-Suction filter port; 23-First oil passage; 24-Second oil passage; 25-Receiving cavity; 26-First oil port; 27-Second oil port; 28-Oil level balance hole; 100-Oil pan structure; 200-Box body; 300-Oil pump; 400-Drive motor. Detailed Implementation

[0029] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0030] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower parts of the corresponding figures. "Inner" and "outer" refer to the outline of the part itself. Furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Additionally, in the description with reference to the figures, the same reference numerals in different figures denote the same element.

[0031] The inventors discovered that in the dual-motor electric drive assembly of new energy vehicles, the left and right electric drives share the same oil pan. The oil pumps in the corresponding oil circuits draw oil from the oil pan and deliver it to the corresponding cooling or lubrication points of the left and right electric drives for circulation cooling and lubrication. However, under the condition of large vehicle tilt angle, the oil distribution in the oil pan of the electric drive assembly is prone to unevenness, which can cause the oil pump to suck up air. This results in insufficient cooling and lubrication of the left and right electric drives in the electric drive assembly.

[0032] To solve the above technical problems, such as Figures 1 to 4 As shown, this disclosure provides an oil pan structure 100, including: a body 1, the body 1 having an oil storage chamber 11 and an isolation member 2, disposed in the oil storage chamber 11, for dividing the oil storage chamber 11 into a first oil storage chamber 12 and a second oil storage chamber 13, the isolation member 2 having an installation position 21 for installing an oil pump 300 and two suction ports 22, the first oil storage chamber 12 and the second oil storage chamber 13 respectively being connected to the oil inlet of the oil pump 300 through the two suction ports 22.

[0033] Through the above technical solution, by setting an isolation member 2 in the oil storage chamber 11 of the oil pan structure body 1, the oil storage chamber can be divided into a first oil storage chamber 12 and a second oil storage chamber 13. An oil pump 300 mounting position 21 is provided on the isolation member 2, facilitating the installation of the oil pump 300. Two suction ports 22 are provided on the isolation member 2, allowing the oil pump 300's inlet to connect to the first oil storage chamber 12 and the second oil storage chamber 13 respectively through the two suction ports. This prevents the oil pump 300 from sucking in air when the vehicle is traveling at a large angle, thus ensuring that there is always sufficient oil in the first oil storage chamber 12 and the second oil storage chamber 13 to be drawn by the oil pump 300 and delivered to the corresponding lubrication or cooling points in the vehicle's electric drive assembly, thereby improving the stability of the oil supply.

[0034] It should be noted that the aforementioned oil pan structure 100 is applied to the vehicle's electric drive assembly. During vehicle operation, including level driving and uphill driving, when the vehicle is not running, it is typically in a level position, and the oil pan structure 100 is also level. The oil levels in the first oil reservoir 12 and the second oil reservoir 13 are approximately equal, and the oil pump 300 is not operating. When the vehicle is in a level driving state, the oil pump 300 starts operating. To facilitate oil intake, the oil pump 300's inlet is typically set to a negative pressure state. At this time, the oil pump 300 draws oil from the first oil reservoir 12 and the second oil reservoir 13 through two suction ports 22 and delivers it to the corresponding lubrication and cooling points in the electric drive assembly. Since the vehicle is in a level driving state, the oil levels in the first oil reservoir 12 and the second oil reservoir 13 are equal, and there is sufficient oil at the two suction ports 22 for the oil pump 300 to draw. When the vehicle is in an uphill driving state, i.e., when the vehicle is in an uphill driving state... When driving at a large tilt angle, the oil in the first and second oil reservoirs will deviate. For example, the first oil reservoir 12 is in a lower position and the second oil reservoir 13 is in a higher position. The oil will flow towards the lower first oil reservoir 12 due to its weight. By setting an isolation member 2 in the middle of the oil reservoir 11, the flow of oil in the second oil reservoir 13 towards the first oil reservoir 12 is prevented. This ensures that there is enough oil in the first and second oil reservoirs 12 to be drawn by the oil pump 3 through the oil inlet and delivered to the corresponding lubrication and cooling points in the electric drive assembly, thereby stabilizing the oil supply.

[0035] To facilitate the oil pump 300 in drawing oil from the first oil reservoir 12 and the second oil reservoir 13, in some possible embodiments, the suction port 22 is located at the lowest point of the body 1. It is understood that the suction port 22 being located at the lowest point of the body 1 means that when the vehicle is traveling horizontally, the suction port 22 is located at the lowest point of the oil pan structure 100 body 1 in the vertical direction. This facilitates oil backflow and accumulation in the suction port 22, reducing oil stagnation in other locations within the oil reservoir 11, ensuring sufficient oil supply for the oil pump 300, and thus improving the oil supply stability of the electric drive assembly.

[0036] When the vehicle is not started, to ensure that the oil levels in the first oil reservoir 12 and the second oil reservoir 13 are roughly equal, in some possible embodiments, the two suction ports 22 are interconnected. For example, a three-way oil passage can be provided in the isolation member 2, with two openings of the three-way oil passage connected to the two suction ports 22 respectively, and the other opening of the three-way oil passage connected to the oil inlet of the oil pump 300. In this case, when the vehicle is not started, the oil pump 300 does not work, and the oil in the first oil reservoir 12 and the second oil reservoir 13 will flow through the oil passage to make the oil volume in both tend to be equal. Thus, when the vehicle is not started, the oil levels in the first oil reservoir 12 and the second oil reservoir 13 can be balanced so that after the vehicle is started, the oil pump 3 has enough oil to draw and deliver to the corresponding lubrication and cooling points in the electric drive assembly, reducing the phenomenon of the oil pump 300 sucking in air due to oil level imbalance, thereby ensuring stable oil supply.

[0037] In order to make the oil volume in the first oil storage chamber 12 and the second oil storage chamber 13 approximately equal, in some possible embodiments, the separator 2 is disposed in the middle of the oil storage chamber 11, and the first oil storage chamber 12 and the second oil storage chamber 13 are arranged symmetrically about the separator 2. Figure 2 As shown, the isolation element 2 extends in the depth direction of the oil storage cavity 11, that is... Figure 2 In the direction from the outside to the inside of the paper, the side of the isolator 2 abuts against the inner wall of the oil storage chamber 11, and the first oil storage chamber 12 and the second oil storage chamber 13 are symmetrically arranged about the plane in which the isolator 2 extends. This allows the oil volume in the first oil storage chamber 12 and the second oil storage chamber 13 to be approximately equal, so that the oil inlet of the oil pump 300 can draw oil from the corresponding suction and filter ports 22 in the first oil storage chamber 12 and the second oil storage chamber 13.

[0038] It is understandable that the aforementioned suction port 22 is used to install an oil filter. By filtering impurities in the oil through the oil filter, impurities can be reduced from clogging the oil passages and from damaging downstream precision components in the electric drive assembly.

[0039] Of course, it is understandable that an oil filter will also be installed at the oil inlet of the oil pump 300 to further filter the oil, prevent impurities from entering the oil pump 300 and causing damage to the oil pump, and prevent impurities from entering the precision components downstream of the electric drive assembly, thereby reducing the failure of the electric drive assembly caused by impurities in the lubricating or cooling oil and improving the stability of the electric drive assembly.

[0040] To facilitate the oil pump 300 supplying the oil drawn from the oil reservoir 11 to the oil supply channel, in some possible embodiments, such as Figure 2As shown, the isolator 2 also includes a first oil passage 23. The oil inlet of the first oil passage 23 is used to connect to the oil outlet of the oil pump 300, and the oil outlet of the first oil passage 23 is used to connect to the corresponding oil supply passage in the electric drive assembly. The first oil passage 23 extends along the extension direction of the isolator 2, that is, in Figure 2 In the middle, the first oil passage 23 extends along the depth direction so that after the oil pump 300 draws oil, it can deliver the oil through the first oil passage 23 to the corresponding oil supply passage to supply oil to the corresponding lubrication point or cooling point in the electric drive assembly.

[0041] In some possible implementations, the isolation member 2 further includes a second oil passage 24. The oil inlet of the second oil passage 24 is used to communicate with two suction ports 22, and the oil outlet of the second oil passage 24 is used to communicate with the oil inlet of the oil pump 300. To facilitate the connection of the second oil passage 24 with the two suction ports 22, the second oil passage 24 may include a first section extending perpendicular to the depth direction and a second section in the same direction as the depth direction. The second section is connected to the middle of the first section. The first section passes through the isolation member 2 perpendicular to the depth direction and forms corresponding suction ports 22 at both ends of the first section. The outer end of the second section is connected to the oil inlet of the oil pump 300. Thus, by setting the second oil passage 24, the oil pump 300 can easily draw oil from the first oil storage chamber 12 and the second oil storage chamber 13 through the corresponding suction ports 22 and the second oil passage 24, and send the oil through the oil outlet of the oil pump 300 and the first oil passage 23 to the corresponding oil supply passage in the electric drive assembly to supply oil to the corresponding lubrication point or cooling point in the electric drive assembly.

[0042] In order to facilitate the connection between the second oil passage 24 and the suction port 22, in some feasible embodiments, the first oil passage 23 is located above the second oil passage 24, that is, the second oil passage 24 is set at the bottom of the isolation member 2, thereby saving the path from the suction port 22 to the second oil passage 24 and facilitating the rapid oil extraction of the oil pump 300 through the oil inlet.

[0043] To facilitate the disassembly and assembly of the oil pump 300, in some possible implementations, such as Figure 1As shown, the mounting position 21 is located outside the oil storage chamber 11. The mounting position 21 may include a receiving cavity 25 for accommodating the oil pump 300. The receiving cavity 25 is cylindrical. The bottom surface of the receiving cavity 25 is provided with a first oil port 26 and a second oil port 27. The first oil port 26 is used to connect the oil outlet of the oil pump 300 and the oil inlet of the first oil passage 23. The second oil port 27 is used to connect the oil inlet of the oil pump 300 and the oil outlet of the second oil passage 24. The bottom surface of the receiving cavity 25 here refers to the side facing the electric drive assembly housing. When the oil pump 300 is placed into the receiving cavity 25, the outer side wall of the body 1 of the oil pan structure 100 can be provided with corresponding mounting holes. The housing of the oil pump 300 can be fixedly installed in the receiving cavity 25 by screws engaging with the mounting holes. A first oil port 26 corresponding to the oil outlet of the oil pump 300 and a second oil port 27 corresponding to the oil inlet of the oil pump 300 are provided in the receiving cavity 25. Thus, when the oil pump 300 is fixed in the receiving cavity 25, the receiving cavity 25 can be fixedly installed in the receiving cavity 25. When in position 21, the oil inlet and the second oil port 27 of the oil pump 300 are connected. At this time, after starting the oil pump 300, the oil in the first oil storage chamber 12 and the second oil storage chamber 13 can be extracted through the second oil port 27 and the second oil passage 24. The oil outlet of the oil pump 300 is connected to the first oil port 26. At this time, after starting the oil pump 300, the pressurized oil can be delivered through the first oil port 26 and the first oil passage 23 to the corresponding oil supply passage to supply oil to the corresponding lubrication point or cooling point in the electric drive assembly.

[0044] In some possible implementations, such as Figure 2 As shown, the isolation member 2 also includes an oil level balancing hole 28 located in the oil reservoir 11 above the mounting position 21. Therefore, when the vehicle is traveling at a large tilt angle, the oil level balancing hole 28 allows the oil chamber with more oil in the first oil reservoir 12 and the second oil reservoir 13 to flow through the oil level balancing hole 28 to the chamber with less oil, thus balancing the oil volume in the first oil reservoir 12 and the second oil reservoir 13. This ensures that the oil pump 300 has sufficient oil at its inlet to draw oil from the corresponding two suction ports 22. It is understood that the aforementioned oil level balancing hole 28 can be a strip-shaped hole arranged along the extension direction of the isolation member 2, i.e., the length direction of the strip-shaped hole in the depth direction and the width direction of the strip-shaped hole in the vertical direction. This ensures that the first oil reservoir 12 and the second oil reservoir 13 have sufficient liquid level height in the vertical direction, and that the oil in the first oil reservoir 12 and the second oil reservoir 13 can be balanced through the oil level balance hole 28 when the vehicle is in a large tilt angle condition.

[0045] In order to facilitate the collection and flow of oil in the oil storage chamber 11 toward the suction port 22, in some possible embodiments, the cross-sectional area of ​​the oil storage chamber 11 gradually decreases from the top of the oil storage chamber 11 toward the bottom. For example... Figure 2As shown, the top and bottom of the oil storage chamber 11 are relative to the vertical direction. Figure 2 In this configuration, the upper part of the oil storage chamber 11 is called the top, and the lower part is called the bottom. The cross-sectional area of ​​the oil storage chamber 11 refers to the plane perpendicular to the vertical direction. By limiting the cross-sectional area of ​​the oil storage chamber 11 from the top to the bottom to gradually decrease, the oil in the oil storage chamber 11 can be concentrated towards the bottom of the oil storage chamber 11, which makes it easier for the oil pump 300 to extract the oil from the corresponding suction port 22.

[0046] In some possible implementations, the bottom wall of the oil storage cavity 11 forms at least one inclined surface structure 14 that slopes downward from the edge of the oil storage cavity 11 toward the center of the oil storage cavity 11. Wherein, as... Figure 2 and Figure 3 As shown, the inclined structure 14 may include two first inclined surfaces 15, which are respectively disposed in the first oil storage chamber 12 and the second oil storage chamber 13, and are symmetrically arranged about the isolation member 2. Thus, by the arrangement of the two first inclined surfaces 15 on the two sides of the isolation member 2, when the vehicle is traveling horizontally, the oil can accumulate from the edges towards the bottom in the first oil storage chamber 12 and the second oil storage chamber 13, that is, towards the corresponding suction port 22, thereby facilitating the oil pump 300 to draw oil from the corresponding suction port 22. Of course, when the vehicle is in a large tilting condition, one of the first oil storage chamber 12 or the second oil storage chamber 13 is in a high position and the other is in a low position. Since the inclined first slope 15 can reduce the dead zone of oil storage on the two sides corresponding to the isolation member 2, that is, the oil on the side of the first oil storage chamber 12 and the second oil storage chamber 13 after tilting does not have more liquid storage space, so that the oil in the first oil storage chamber 12 and the second oil storage chamber 13 can still gather towards the bottom, that is, towards the corresponding suction port 22, thereby ensuring that the oil pump 300 has enough oil to draw from the oil inlet.

[0047] In some possible embodiments, the inclined structure 14 further includes two second inclined surfaces 16, which are respectively disposed between the two first inclined surfaces 15 and the spacer 2; the two second inclined surfaces 16 are symmetrically arranged about the spacer 2. That is, the second inclined surfaces 16 extend along the depth direction. When the vehicle is traveling at a large tilt angle, the combined arrangement of the second inclined surfaces 16 and the first inclined surfaces 15 can further reduce the dead zone of oil storage on the side of the oil storage chamber 11, and further facilitate the accumulation of oil at the bottom of the oil storage chamber 11, so that the oil pump 300 can draw oil from the corresponding suction port 22.

[0048] To improve the structural strength of the oil pan mechanism, in some possible embodiments, the separator 2 is integrally formed with the body 1. For example, the separator 2 and the body 1 can be integrally cast.

[0049] A second aspect of this disclosure provides an electric drive assembly including the aforementioned oil pan structure. It will be understood that this electric drive assembly incorporates all the advantages of the aforementioned oil pan structure, which will not be elaborated upon here.

[0050] In some possible implementations, the electric drive assembly further includes a housing 200 and an oil pump 300. An oil pan structure 100 is formed at the bottom of the housing 200, and the oil pump 300 is located at the mounting position 21 of the isolator 2 of the oil pan structure 100. By configuring the housing 200 and the oil pump 300 in the electric drive assembly, and with the oil pan structure 100 formed at the bottom of the housing 200, the integration of the electric drive assembly can be improved, and the oil transfer path can be reduced. The oil pump 300 is located in the mounting position 21 of the isolator 2, which facilitates the collection of oil in the housing 200 by gravity in the oil pan structure 100, and the oil pump 300 draws the oil and delivers it to the corresponding oil supply channels to supply oil to the corresponding lubrication points and / or cooling points in the electric drive assembly.

[0051] In some possible implementations, when the electric drive assembly is applied to a dual-motor electric drive assembly, the electric drive assembly includes two drive motors (400) disposed within the housing 200 and spaced apart, and a reducer (not shown in the figure) for transmission connection with the two drive motors (400); the electric drive assembly also includes an oil supply passage and an oil return passage (not shown in the figure), the oil supply passage is used to communicate with the outlet of the first oil passage 23 in the oil pan structure 100 to deliver oil to the oil inlets of the two drive motors 400 and the reducer, and the oil return passage is used to communicate with the oil outlets of the two drive motors 400 and the reducer to return the lubricated and cooled oil to the oil storage chamber 11 of the oil pan structure 100. Thus, through the two drive motors 400 and the reducer housed within the housing 200, and the oil supply and return channels in the electric drive assembly, the oil pump 300 draws oil from the oil reservoir 11 in the oil pan and delivers it through the first oil channel to the oil supply channel to supply oil to the drive motors 400 and the reducer. The oil return channel is used to return the lubricating and cooling oil to the oil reservoir in the oil pan structure. This ensures that the dual-motor electric drive assembly has sufficient oil for lubrication and / or cooling, improving the stability of the electric drive assembly.

[0052] Understandably, for the arrangement of the two drive motors 400, the first oil reservoir 12 and the second oil reservoir 13 can each correspond to one drive motor 400. That is, the oil in the first oil reservoir 12 is mainly used for the lubrication and / or cooling of one drive motor 400, and the oil in the second oil reservoir 13 is mainly used for the lubrication and / or cooling of the other drive motor 400. When the two drive motors 400 are of the same model, the isolator 2 can be located in the middle of the oil reservoir 11, and the first oil reservoir 12 and the second oil reservoir 13 are symmetrically arranged about the isolator 2. This allows the oil content in the first oil reservoir 12 and the second oil reservoir 13 to be approximately equal, so that the oil pump 300 can provide sufficient oil for the lubrication and / or cooling of the two drive motors 400 respectively.

[0053] Of course, in some feasible implementations, the two drive motors 400 can be of different models. In this case, the isolator 2 can be selectively offset from the middle position of the oil reservoir 11 so that the amount of oil in the first oil reservoir 12 and the second oil reservoir 13 is different. For example, the drive motor 400 with greater lubrication and / or cooling requirements corresponds to the first oil reservoir 12, and the drive motor 400 with relatively smaller lubrication and / or cooling requirements corresponds to the second oil reservoir 13. In this case, the oil capacity of the first oil reservoir 12 is greater than the oil capacity of the second oil reservoir 13, so that the two drive motors 400 can each have enough oil for lubrication and / or cooling.

[0054] This disclosure provides a vehicle including the aforementioned electric drive assembly in a third aspect. It is worth noting that the vehicle can be a pure electric vehicle or a hybrid vehicle. All the beneficial effects of the vehicle incorporating the aforementioned electric drive assembly will not be elaborated here.

[0055] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0057] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An oil pan structure, characterized in that, include: The body, wherein the body is provided with an oil storage chamber, and An isolator is provided in the oil storage chamber to divide the oil storage chamber into a first oil storage chamber and a second oil storage chamber. The isolator is provided with a mounting position for installing an oil pump and two suction ports. The first oil storage chamber and the second oil storage chamber are respectively connected to the oil inlet of the oil pump through the two suction ports.

2. The oil pan structure according to claim 1, characterized in that, The suction port is located at the lowest point of the body.

3. The oil pan structure according to claim 1, characterized in that, The two suction ports are interconnected.

4. The oil pan structure according to claim 1, characterized in that, The isolation element is located in the middle of the oil storage cavity, and the first oil storage cavity and the second oil storage cavity are arranged symmetrically about the isolation element.

5. The oil pan structure according to any one of claims 1-4, characterized in that, The isolation component also includes a first oil passage, the inlet of which is used to connect to the outlet of the oil pump.

6. The oil pan structure according to claim 5, characterized in that, The isolation component also includes a second oil passage, the oil inlet of which is connected to the two suction and filter ports, and the oil outlet of which is connected to the oil inlet of the oil pump.

7. The oil pan structure according to claim 6, characterized in that, The mounting position is located outside the oil storage chamber and includes a receiving cavity for accommodating the oil pump. The receiving cavity is provided with a first oil port and a second oil port. The first oil port is used to connect the oil outlet of the oil pump and the oil inlet of the first oil passage, and the second oil port is used to connect the oil inlet of the oil pump and the oil outlet of the second oil passage.

8. The oil pan structure according to claim 1, characterized in that, The isolation element also includes an oil level balancing hole, which is located above the mounting position.

9. The oil pan structure according to claim 1, characterized in that, The cross-sectional area of ​​the oil storage cavity gradually decreases from the top of the oil storage cavity toward the bottom of the oil storage cavity.

10. The oil pan structure according to claim 9, characterized in that, The bottom wall of the oil storage chamber has at least one inclined surface structure that slopes downward from the edge of the oil storage chamber toward the suction port.

11. The oil pan structure according to claim 10, characterized in that, The inclined structure includes two first inclined surfaces, which are respectively disposed in the first oil storage cavity and the second oil storage cavity, and the two first inclined surfaces are symmetrically arranged about the isolation member.

12. The oil pan structure according to claim 11, characterized in that, The inclined structure further includes two second inclined surfaces, which are respectively disposed between the two first inclined surfaces and the spacer; the two second inclined surfaces are symmetrically arranged about the spacer.

13. The oil pan structure according to claim 1, characterized in that, The isolation component is integrally formed with the main body.

14. An electric drive assembly, characterized in that, Includes the oil pan structure as described in any one of claims 1-13.

15. The electric drive assembly according to claim 14, characterized in that, The electric drive assembly also includes a housing and an oil pump, with the oil pan structure formed at the bottom of the housing and the oil pump located at the mounting position of the isolation component of the oil pan structure.

16. The electric drive assembly according to claim 15, characterized in that, The electric drive assembly includes two drive motors disposed inside the housing and spaced apart, and a reducer for driving the two drive motors. The electric drive assembly further includes an oil supply passage and an oil return passage. The oil supply passage is connected to the outlet of the first oil passage in the oil pan structure to deliver oil to the oil inlets of the two drive motors and the reducer. The oil return passage is connected to the oil outlets of the two drive motors and the reducer to return the lubricated and cooled oil to the oil storage chamber of the oil pan structure.

17. A vehicle, characterized in that, Includes the electric drive assembly as described in any one of claims 14-16.

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