Driving assembly and vehicle

Abstract

The embodiment of the invention relates to the technical field of vehicles, and discloses a driving assembly and a vehicle, and the driving assembly comprises a first motor, a second motor, a first pump body, a second pump body and an oil cooler. The first motor is provided with a first flow channel. The second motor is provided with a second flow channel. The first pump body and the second pump body communicate with the first flow channel and the second flow channel, and the first pump body and the second pump body are both used for introducing first cooling liquid into the first flow channel and the second flow channel. The oil cooler communicates with the first pump body and the second pump body and is used for cooling the first cooling liquid flowing through the first pump body and the first cooling liquid flowing through the second pump body. According to the technical scheme, space arrangement of the driving assembly can be facilitated.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically to a drive assembly and a vehicle. Background Technology

[0002] With the rapid development of new energy vehicles, distributed drive systems, by arranging multiple electric drive units at the wheel wells, can significantly improve the vehicle's power responsiveness, torque vector control capabilities, and enable various advanced functional expansions. However, the complex structure of multiple electric drive units in a distributed drive system can affect its spatial configuration.

[0003] The prior art provides an oil circuit design, oil supply method, and dual-circuit oil pump for lubrication of wheel-end electric drive axles, as shown in the attached drawings of the specification. Figure 1 As shown, lubricating oil in the first housing 4a flows into the first oil filter 2a, is filtered, flows into the dual-circuit oil pump 1, is then pumped into the first heat exchanger 3a for cooling, and finally flows back into the first housing 4a, which houses the first wheel-end electric drive axle. Lubricating oil in the second housing 4b flows into the second oil filter 2b, is filtered, flows into the dual-circuit oil pump 1, is then pumped into the second heat exchanger 3b for cooling, and finally flows back into the second housing 4b, which houses the second wheel-end electric drive axle. The dual-circuit oil pump 1 comprises two pumps (first pump 12a and second pump 12b) driven by the same motor 11, but these two pumps have separate oil circuits. This structure facilitates the formation of an independent circuit for each wheel-end electric drive system, and compared to two independently driven oil pumps, it facilitates flow control, saves space, and avoids interference. However, the structure of the drive assembly provided by this scheme is still relatively complex. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a drive assembly and vehicle that aims to solve the problem of complex drive assembly structure in the prior art.

[0005] In a first aspect, embodiments of this application provide a drive assembly, including a first motor, a second motor, a first pump body, a second pump body, and an oil cooler. The first motor has a first flow channel. The second motor has a second flow channel. Both the first pump body and the second pump body are connected to the first and second flow channels, and both the first and second pump bodies are used to introduce a first coolant into the first and second flow channels. The oil cooler is connected to the first and second pump bodies and is used to cool the first coolant flowing through the first pump body and the first coolant flowing through the second pump body.

[0006] According to the above-mentioned technical means, both the first pump body and the second pump body can drive the first coolant to flow into the first flow channel and the second flow channel, thereby absorbing the heat dissipated by the first motor and the second motor when they are working. Compared with setting the first pump body or the second pump body alone to introduce the first coolant into the first flow channel and the second flow channel, when one of the first pump body and the second pump body fails, the other of the first pump body and the second pump body can still continue to work, thereby continuously introducing the first coolant into the first flow channel and the second flow channel, thus ensuring the cooling effect on the first motor and the second motor, thereby improving the safety of the drive assembly during operation.

[0007] Meanwhile, compared to setting two oil coolers to cool the first coolant flowing through the first pump body and the first coolant flowing through the second pump body respectively, using one oil cooler to cool the first coolant flowing through the first pump body and the first coolant flowing through the second pump body simultaneously can reduce the number of oil coolers required for the drive assembly. This simplifies the structure of the drive assembly, making it easier to process, install, and allocate space for the drive assembly in the vehicle, and also reduces the processing cost of the drive assembly.

[0008] In one possible embodiment, the inlet of the first pump body is connected to the outlet of the first flow channel and to the outlet of the second flow channel, and the outlet of the first pump body is connected to the first inlet of the oil cooler. The inlet of the second pump body is connected to the outlet of the first flow channel and to the outlet of the second flow channel, and the outlet of the second pump body is connected to the first inlet of the oil cooler. The first outlet of the oil cooler is connected to the inlet of the first flow channel and to the inlet of the second flow channel.

[0009] According to the above-mentioned technical means, the first pump body and the second pump body can be set close to the outlets of the first flow channel and the second flow channel, thereby facilitating the flow of the first coolant flowing out of the first flow channel and the second flow channel. Furthermore, the oil cooler can be set close to the inlet of the first flow channel and the inlet of the second flow channel, thus shortening the distance between the oil cooler and the first and second oil channels. After being cooled by the oil cooler, the first coolant can flow into the first and second flow channels more quickly, reducing the cooling loss of the first coolant during its flow between the oil cooler and the first and second motors. This improves the cooling effect of the first coolant on the first and second motors after flowing into the first and second flow channels, and enhances the rationality of the drive assembly layout.

[0010] In one possible embodiment, the drive assembly further includes a regulating valve, the inlet of which is connected to the outlet of a first pump body and the outlet of a second pump body. The first outlet of the regulating valve is connected to the first inlet of an oil cooler, and the second outlet of the regulating valve is connected to the inlet of a first flow channel and the inlet of a second flow channel. The regulating valve inlet is capable of communicating with both the first and second outlets and of regulating the flow rate of the first coolant at the first outlet and the first coolant at the second outlet.

[0011] According to the above technical means, the amount of first coolant flowing through the oil cooler can be changed by adjusting the flow rate of the first coolant at the first outlet of the regulating valve and the first coolant at the second outlet of the regulating valve, thereby adjusting the cooling effect of the oil cooler on the first coolant, so that the temperature of the first coolant can be suitable for different working conditions of the drive assembly, and improving the applicability of the drive assembly.

[0012] In one possible embodiment, the drive assembly has a first operating mode. When the drive assembly is in the first operating mode, the inlet of the regulating valve is connected to the first outlet of the regulating valve and disconnected from the second outlet of the regulating valve, and the first coolant flowing out of the regulating valve flows through the oil cooler.

[0013] According to the above technical means, when the drive assembly is in the first working mode, the first coolant flowing out from the regulating valve flows through the oil cooler. The oil cooler can cool all the first coolant to improve the cooling effect on the first motor and the second motor.

[0014] In one possible embodiment, the drive assembly has a second operating mode. When the drive assembly is in the second operating mode, the inlet of the regulating valve is connected to the second outlet of the regulating valve and disconnected from the first outlet of the regulating valve, and the first coolant flowing out of the regulating valve flows into the first flow channel or the second flow channel.

[0015] Based on the above technical means, when the drive assembly is started, the drive assembly can be switched to the second working mode. The heat generated by the first motor and the second motor is used to heat the drive assembly, so that the temperature of each metal component of the drive assembly rises steadily, preventing problems such as local overheating or uneven expansion of the drive assembly, ensuring the normal operation of the drive assembly, and also shortening the overall time from initial start-up to full load operation of the drive assembly, making the use of the drive assembly more convenient.

[0016] In one possible embodiment, the drive assembly further includes a first controller electrically connected to the regulating valve. The drive assembly has a third operating mode. When the drive assembly is in the third operating mode, the inlet of the regulating valve is connected to the first outlet of the regulating valve and also to the second outlet of the regulating valve. The first controller is capable of controlling the regulating valve to regulate the flow rate of the first coolant at the first outlet of the regulating valve and the first coolant at the second outlet of the regulating valve, thereby regulating the temperature of the first coolant flowing into the first flow channel and the temperature of the first coolant flowing into the second flow channel.

[0017] According to the above technical means, by setting the first controller, the first controller can control the regulating valve to adjust the flow rate of the first coolant at the first outlet of the regulating valve, thereby changing the amount of the first coolant flowing through the oil cooler, thereby changing the cooling effect of the oil cooler on the first coolant, so that the first coolant is kept at a suitable temperature.

[0018] In one possible embodiment, the drive assembly further includes a third pump body and an electronic control module. The electronic control module is electrically connected to the first motor and the second motor and is used to supply power to the first motor and the second motor. The outlet of the third pump body is connected to the inlet of the electronic control module, the outlet of the electronic control module is connected to the second inlet of the oil cooler, and the inlet of the third pump body is connected to the second outlet of the oil cooler. The third pump body is used to introduce a second coolant into the electronic control module. The second coolant is used for heat exchange with the electronic control module and for heat exchange with the first coolant flowing through the oil cooler.

[0019] According to the above technical means, a second coolant is introduced into the electronic control module through a third pump. After flowing into the electronic control module, the second coolant absorbs the heat generated during its operation. Furthermore, after flowing out of the electronic control module, the first coolant flows into the oil cooler to absorb heat from the first coolant within the oil cooler, thus cooling the first coolant in the oil cooler. The coolant is then discharged from the second outlet of the oil cooler, thereby achieving the cooling functions of both the electronic control module and the first coolant. This ensures the normal functioning of the electronic control module, the first motor, and the second motor.

[0020] In one possible embodiment, the drive assembly further includes a second controller electrically connected to the third pump body, the second controller being used to control the third pump body to adjust the flow rate of the second coolant supplied by the third pump body to the electronic control module.

[0021] According to the above technical means, by setting the second controller, the flow rate of the second coolant supplied to the electronic control module by the third pump body can be changed, thereby changing the heat absorbed by the second coolant from the electronic control module, adjusting the temperature of the electronic control module, and thus adjusting the working performance of the electronic control module.

[0022] In one possible embodiment, the drive assembly further includes a first main flow channel located between the first motor and the second motor, with its inlet connected to the first outlet of the oil cooler. The outlet of the first main flow channel is connected to both the first flow channel and the second flow channel.

[0023] According to the above technical means, compared with setting two flow channels to connect the first flow channel and the second flow channel to the first outlet of the oil cooler respectively, by setting the first main flow channel, the length of the flow path between the oil cooler, the first flow channel and the second flow channel can be reduced, thereby simplifying the structure of the drive assembly.

[0024] In one possible embodiment, the drive assembly further includes a first secondary flow channel extending axially along the first motor and located on the side of the first main flow channel near the first motor. The inlet of the first secondary flow channel communicates with the outlet of the first main flow channel, and the outlet of the first secondary flow channel communicates with the inlet of the first flow channel. And / or, the drive assembly further includes a second secondary flow channel extending axially along the second motor and located on the side of the first main flow channel near the second motor. The inlet of the second secondary flow channel communicates with the outlet of the first main flow channel, and the outlet of the second secondary flow channel communicates with the inlet of the second flow channel.

[0025] According to the above-mentioned technical means, a portion of the first coolant flowing out from the first main channel can flow along the axial direction of the first motor towards the first motor, so that this portion of the first coolant can flow into the first flow channel, thereby facilitating the cooling of the first motor. Through the provision of the second secondary flow channel, another portion of the first coolant flowing out from the first main channel can flow along the axial direction of the second motor towards the second motor, so that this portion of the first coolant can flow into the first flow channel, thereby facilitating the cooling of the second motor.

[0026] In one possible embodiment, the drive assembly further includes a housing and a filter. Both the first motor and the second motor are housed within the housing, which collects first coolant flowing from a first flow channel and first coolant flowing from a second flow channel. The filter is housed within the housing and connected to the bottom of the housing. The filter inlet communicates with the interior of the housing, the first outlet of the filter communicates with the inlet of the first pump body, and the second outlet of the filter communicates with the inlet of the second pump body.

[0027] According to the above-mentioned technical means, by setting up a filter, impurities in the first coolant can be filtered out and scale formation can be prevented, thereby ensuring the cooling effect of the drive assembly and ensuring the smooth operation of the motor system.

[0028] Secondly, embodiments of this application provide a vehicle including the aforementioned drive assembly. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application will be described below.

[0030] Figure 1 This is a schematic diagram of the structure of a drive assembly in related technologies; Figure 2 A schematic diagram of the structure of a vehicle provided in this application embodiment; Figure 3 This is a schematic diagram of the structure of a drive assembly provided in an embodiment of this application; Figure 4This is a schematic diagram of another drive assembly provided in an embodiment of this application; Figure 5 A schematic diagram of the coolant flow direction of a drive assembly provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a first pump body provided in an embodiment of this application; Figure 7 This is a schematic diagram of another first pump body provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of an oil cooler provided in an embodiment of this application; Figure 9 A schematic diagram of the coolant flow direction of another drive assembly provided in this application embodiment; Figure 10 A schematic diagram of the flow channel structure of a drive assembly provided in an embodiment of this application; Figure 11 This application provides a schematic diagram of the structure of a first motor and a second motor according to an embodiment of the present application. Figure 12 This is a schematic diagram of the structure of a filter provided in an embodiment of this application.

[0031] Explanation of reference numerals in the attached figures: 100 - Vehicle; 10 - Drivetrain; 1-First motor; 11-First rotor; 12-First reducer; 13-First sub-flow channel; 14-Second sub-flow channel; 15-First flow channel; 2-Second motor; 21-Second rotor; 22-Second reducer; 23-Third sub-flow channel; 24-Fourth sub-flow channel; 25-Second flow channel; 3-First pump body; 4-Second pump body; 5-Oil cooler; 6-Regulating valve; 71-Third pump body; 72-Electrical control module; 73-Radiator; 74-Fan; 75-Temperature sensor; 76-Power supply; 81-First main flow channel; 82-Second main flow channel; 83-First secondary flow channel; 84-Second secondary flow channel; 91-Housing housing; 92-Filter; 93-First shaft; 94-Second shaft; 95-First bearing; 96-Second bearing; 97-Third bearing; 98-Fourth bearing; 20 - Wheels. Detailed Implementation

[0032] The terms "first," "second," etc., are used for descriptive purposes only and have no sequential or technical meaning, nor should they be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Directional terms used in this application, such as "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," are merely for reference to the orientation shown in the accompanying drawings. The use of directional terms is for better and clearer explanation and understanding of this application, and does not indicate the orientation of the referred device or component in an actual application scenario.

[0033] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Rotary connection" refers to a connection where the two parts can rotate relative to each other after connection. "Sliding connection" refers to a connection where the two parts can slide relative to each other after connection.

[0034] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0035] The term "electrical connection" refers to the flow of current or signal from one conductor to another. An electrical connection between A and B means that current or signal can flow from A to B and vice versa. This connection includes direct and indirect electrical connections. A direct electrical connection between A and B means that A and B are physically connected. An indirect electrical connection between A and B means that A and B are connected via C, where C can be at least one wire or device.

[0036] The embodiments of this application are described below with reference to the accompanying drawings.

[0037] Please see Figure 2 , Figure 2This is a schematic diagram of the structure of a vehicle 100 provided in an embodiment of this application. The vehicle 100 can be, but is not limited to, a pure electric vehicle (PEV / BEV), a hybrid electric vehicle (HEV), a range-extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), or a new energy vehicle.

[0038] like Figure 2 As shown, the vehicle 100 includes a drive assembly 10 and wheels 20. The drive assembly 10 is connected to the wheels 20 in a transmission manner. During operation, the drive assembly 10 can transmit power to the wheels 20, thereby driving the wheels 20 to rotate and driving the vehicle 100 to move.

[0039] In some embodiments, such as Figures 3 to 7 As shown, the drive assembly 10 includes a first motor 1, a second motor 2, a first pump body 3, a second pump body 4, and an oil cooler 5.

[0040] The first motor 1 is provided with a first flow channel 15. The second motor 2 is provided with a second flow channel 25. The first pump body 3 and the second pump body 4 are both connected to the first flow channel 15 and the second flow channel 25, and the first pump body 3 and the second pump body 4 are both used to introduce the first coolant into the first flow channel 15 and the second flow channel 25.

[0041] The oil cooler 5 is connected to the first pump body 3 and the second pump body 4, and is used to cool the first coolant flowing through the first pump body 3 and the first coolant flowing through the second pump body 4.

[0042] Both the first pump body 3 and the second pump body 4 can drive the first coolant to flow into the first flow channel 15 and the second flow channel 25, thereby absorbing the heat dissipated by the first motor 1 and the second motor 2 during operation. Compared with setting the first pump body 3 or the second pump body 4 to supply the first coolant into the first flow channel 15 and the second flow channel 25 separately, when one of the first pump body 3 and the second pump body 4 fails, the other of the first pump body 3 and the second pump body 4 can still continue to work, thereby continuously supplying the first coolant into the first flow channel 15 and the second flow channel 25, thus ensuring the cooling effect on the first motor 1 and the second motor 2, thereby improving the safety of the drive assembly 10 during operation.

[0043] Meanwhile, compared to setting two oil coolers 5 to cool the first coolant flowing through the first pump body 3 and the first coolant flowing through the second pump body 4 respectively, by using one oil cooler 5 to cool the first coolant flowing through the first pump body 3 and the first coolant flowing through the second pump body 4 simultaneously, the number of oil coolers 5 required for the drive assembly 10 can be reduced, thereby simplifying the structure of the drive assembly 10, facilitating the processing and installation of the drive assembly 10 and the space arrangement of the drive assembly 10 on the vehicle 100, and reducing the processing cost of the drive assembly 10.

[0044] For example, the first coolant can be cooling oil, water, etc.

[0045] For example, the first pump body 3 can be an electric pump, a hydraulic pump, etc. The pump body described later can be the same as or different from the first pump body 3, so it will not be described in detail.

[0046] In some embodiments, such as Figures 5 to 8 As shown, the inlet of the first pump body 3 ( Figure 6 The opening m shown is connected to the outlet of the first flow channel 15 and to the outlet of the second flow channel 25. The outlet of the first pump body 3 ( Figure 7 The opening n shown is connected to the first inlet of the oil cooler 5.

[0047] The inlet of the second pump body 4 is connected to the outlet of the first flow channel 15 and to the outlet of the second flow channel 25. The outlet of the second pump body 4 is connected to the first inlet of the oil cooler 5. Figure 8 The opening u shown is connected.

[0048] The first outlet of oil cooler 5 ( Figure 8 The opening (x) shown is connected to the inlet of the first flow channel 15 and to the inlet of the second flow channel 25.

[0049] Thus, the first pump body 3 and the second pump body 4 can be positioned close to the outlets of the first flow channel 15 and the second flow channel 25, thereby facilitating the flow of the first coolant flowing out of the first flow channel 15 and the second flow channel 25.

[0050] Furthermore, the oil cooler 5 can be positioned close to the inlet of the first flow channel 15 and the inlet of the second flow channel 25. This shortens the distance between the oil cooler 5 and the first and second oil channels. After being cooled by the oil cooler 5, the first coolant can flow into the first flow channel 15 and the second flow channel 25 more quickly, reducing the cooling loss of the first coolant during its flow between the oil cooler 5 and the first motor 1 and the second motor 2. This improves the cooling effect of the first coolant on the first motor 1 and the second motor 2 after flowing into the first flow channel 15 and the second flow channel 25, and enhances the rationality of the layout of the drive assembly 10.

[0051] In some other embodiments, the first inlet of the oil cooler 5 may also be connected to the outlet of the first flow channel 15 and the outlet of the second flow channel 25. The first outlet of the oil cooler 5 is connected to the inlet of the first pump body 3 and the inlet of the second pump body 4. The outlet of the first pump body 3 is connected to the inlet of the first flow channel 15 and the inlet of the second flow channel 25. The outlet of the second pump body 4 is connected to the inlet of the first flow channel 15 and the inlet of the second flow channel 25.

[0052] The first coolant flowing out of the flow channel can be cooled by the oil cooler 5 first, and then flow into the first flow channel 15 and the second flow channel 25 via the first pump body 3 and the second pump body 4, thus achieving the same cooling effect on the first motor 1 and the second motor 2.

[0053] In some embodiments, such as Figure 9 As shown, the drive assembly 10 also includes a regulating valve 6. The inlet of the regulating valve 6 is connected to the outlet of the first pump body 3 and to the outlet of the second pump body 4. The first outlet of the regulating valve 6 is connected to the first inlet of the oil cooler 5, and the second outlet of the regulating valve 6 is connected to the inlet of the first flow channel 15 and to the inlet of the second flow channel 25.

[0054] The inlet of the regulating valve 6 can be connected to the first outlet and the second outlet, and the regulating valve 6 can adjust the flow rate of the first coolant at the first outlet and the first coolant at the second outlet of the regulating valve 6.

[0055] In this way, by adjusting the flow rate of the first coolant at the first outlet of the regulating valve 6 and the first coolant at the second outlet of the regulating valve 6, the amount of the first coolant flowing through the oil cooler 5 can be changed, thereby adjusting the cooling effect of the oil cooler 5 on the first coolant, so that the temperature of the first coolant can be suitable for different working conditions of the drive assembly 10, and improving the applicability of the drive assembly 10.

[0056] For example, control valve 6 can be a solenoid valve, ball valve, etc.

[0057] In some embodiments, the drive assembly 10 has a first operating mode. When the drive assembly 10 is in the first operating mode, the inlet of the regulating valve 6 is connected to the first outlet of the regulating valve 6 and disconnected from the second outlet of the regulating valve 6, and the first coolant flowing out of the regulating valve 6 flows through the oil cooler 5.

[0058] When the drive assembly 10 is in the first operating mode, the first coolant flowing out from the regulating valve 6 flows through the oil cooler 5. The oil cooler 5 can cool all of the first coolant to improve the cooling effect on the first motor 1 and the second motor 2. For example, when the first motor 1 or the second motor 2 is in a high-power or high-speed operating condition, the heat generated by the first motor 1 and the second motor 2 is relatively large. At this time, the drive assembly 10 can be switched to the first operating mode to ensure the cooling effect of the first coolant on the first motor 1 and the second motor 2 and prevent the first motor 1 or the second motor 2 from overheating.

[0059] In some embodiments, the drive assembly 10 has a second operating mode. When the drive assembly 10 is in the second operating mode, the inlet of the regulating valve 6 is connected to the second outlet of the regulating valve 6 and disconnected from the first outlet of the regulating valve 6, and the first coolant flowing out of the regulating valve 6 flows into the first flow channel 15 or the second flow channel 25.

[0060] When the drive assembly 10 is in the second working mode, the first coolant flowing out from the regulating valve 6 will not flow through the oil cooler 5. At this time, the oil cooler 5 is not working, and the heat dissipated by the first motor 1 and the second motor 2 is stored in the first coolant.

[0061] In this way, when the drive assembly 10 is started, the drive assembly 10 can be switched to the second working mode. The heat generated by the first motor 1 and the second motor 2 is used to heat the drive assembly 10, so that the temperature of each metal component of the drive assembly 10 rises steadily. This prevents problems such as local overheating or uneven expansion of the drive assembly 10, ensuring the normal operation of the drive assembly 10. At the same time, it can also shorten the overall time from the initial start-up to full load operation of the drive assembly 10, making the use of the drive assembly 10 more convenient.

[0062] In some embodiments, the drive assembly 10 further includes a first controller electrically connected to the regulating valve 6.

[0063] The drive assembly 10 has a third operating mode. When the drive assembly 10 is in the third operating mode, the inlet of the control valve 6 is connected to the first outlet of the control valve 6, and is also connected to the second outlet of the control valve 6.

[0064] The first controller can control the regulating valve 6 to regulate the flow rate of the first coolant at the first outlet of the regulating valve 6 and the first coolant at the second outlet of the regulating valve 6, so as to regulate the temperature of the first coolant flowing into the first flow channel 15 and the temperature of the first coolant flowing into the second flow channel 25.

[0065] By setting the first controller, the first controller can control the regulating valve 6 to adjust the flow rate of the first coolant at the first outlet of the regulating valve 6, thereby changing the amount of the first coolant flowing through the oil cooler 5, thereby changing the cooling effect of the oil cooler 5 on the first coolant, so that the first coolant is kept at a suitable temperature.

[0066] For example, in order to ensure that the first coolant is in the optimal viscosity range to absorb the heat of the first motor 1 and the second motor 2, taking the temperature of the first coolant as needing to be maintained between 40°C and 60°C as an example, when the temperature of the first coolant is less than 40°C, the first controller can control the regulating valve 6 to increase the flow rate at the second outlet of the regulating valve 6 and decrease the flow rate at the first outlet of the regulating valve 6, so as to reduce the amount of first coolant flowing through the oil cooler 5, reduce the cooling effect of the oil cooler 5 on the first coolant, and raise the temperature of the first coolant to above 40°C, so as to avoid the temperature of the first coolant being too low.

[0067] When the temperature of the first coolant reaches 60°C, the first controller can control the regulating valve 6 to increase the flow rate at the first outlet of the regulating valve 6 and decrease the flow rate at the second outlet of the regulating valve 6, so as to increase the amount of the first coolant flowing through the oil cooler 5, improve the cooling effect of the oil cooler 5 on the first coolant, and reduce the temperature of the first coolant to below 60°C, so as to avoid the temperature of the first coolant being too high.

[0068] In some embodiments, such as Figure 5 , Figure 8 , Figure 9 As shown, the drive assembly 10 also includes a third pump body 71 and an electronic control module 72. The electronic control module 72 is electrically connected to the first motor 1 and the second motor 2 and is used to supply power to the first motor 1 and the second motor 2.

[0069] The outlet of the third pump body 71 is connected to the inlet of the electronic control module 72, and the outlet of the electronic control module 72 is connected to the second inlet of the oil cooler 5. Figure 8 The opening shown (y) is connected, and the inlet of the third pump body 71 is connected to the second outlet of the oil cooler 5. Figure 8 The opening z shown is connected, and the third pump body 71 is used to introduce the second coolant into the electronic control module 72. The second coolant is used to exchange heat with the electronic control module 72 and to exchange heat with the first coolant flowing through the oil cooler 5.

[0070] The second coolant is introduced into the electronic control module 72 through the third pump body 71. After flowing into the electronic control module 72, the second coolant absorbs the heat generated by the electronic control module 72 during operation. Furthermore, after flowing out of the electronic control module 72, the first coolant flows into the oil cooler 5 to absorb heat from the first coolant within the oil cooler 5, thereby cooling the first coolant in the oil cooler 5. The coolant is then discharged from the second outlet of the oil cooler 5, thus achieving the cooling function of both the electronic control module 72 and the first coolant from the oil cooler 5. This ensures the normal functioning of the electronic control module 72, the first motor 1, and the second motor 2.

[0071] For example, the second coolant can be cooling oil, cooling water, etc.

[0072] In some embodiments, such as Figure 5 , Figure 9 As shown, the drive assembly 10 also includes a power supply 76, which is connected between the electronic control module 72 and the third pump body 71 and is electrically connected to the electronic control module 72 to supply power to the electronic control module 72.

[0073] The inlet of power supply 76 is connected to the outlet of the third pump body 71, and the outlet of power supply 76 is connected to the inlet of the electronic control module 72.

[0074] In this way, the second coolant can also flow through the power supply 76 to cool it down and ensure its normal operation.

[0075] In some embodiments, such as Figure 5 , Figure 9 As shown, the drive assembly 10 also includes a radiator 73, the inlet of which is connected to the outlet of the oil cooler 5, and the outlet of the radiator 73 is connected to the inlet of the third pump body 71. The radiator 73 is used for heat exchange with air.

[0076] In this way, after the second coolant flows out of the oil cooler 5 and before flowing into the third pump body 71, it can exchange heat with the air in the radiator 73, thereby dissipating the heat in the second coolant into the air, so that the second coolant can circulate and absorb the heat in the electronic control module 72 and the first coolant.

[0077] In some embodiments, such as Figure 5 , Figure 9 As shown, the drive assembly 10 also includes a fan 74 facing the radiator 73. This allows the fan 74 to blow airflow near the radiator 73, thereby improving the heat exchange effect between the second coolant in the radiator 73 and the air, and accelerating the heat dissipation rate of the second coolant.

[0078] In some embodiments, such as Figure 5 , Figure 9As shown, the drive assembly 10 also includes a temperature sensor 75, which is used to monitor the temperature of the second coolant. The second controller is electrically connected to the temperature sensor 75 so that the second controller can adjust the temperature of the second coolant.

[0079] For example, the second controller and the first controller can be the same controller or different controllers.

[0080] In some embodiments, the drive assembly 10 further includes a second controller electrically connected to the third pump body 71, the second controller being used to control the third pump body 71 to adjust the flow rate of the second coolant supplied by the third pump body 71 to the electronic control module 72.

[0081] By setting the second controller, the flow rate of the second coolant supplied to the electronic control module 72 by the third pump body 71 can be changed, thereby changing the heat absorbed by the electronic control module 72 by the second coolant, adjusting the temperature of the electronic control module 72, and thus adjusting the working performance of the electronic control module 72.

[0082] For example, when the motor needs to output a large torque (such as when the vehicle is launching, in obstacle avoidance mode, or in track mode), the flow rate of the second coolant can be adjusted by the third pump body 71. This allows the second coolant to quickly absorb the heat from the electronic control module 72, reducing the temperature rise rate of the electronic control module 72. As a result, the electronic control module 72 can release a larger peak operating current, increasing the short-term maximum operating torque of the drive assembly 10, thereby increasing the output torque of the drive assembly 10 and improving the power of the vehicle 100.

[0083] At the same time, by changing the flow rate of the second coolant supplied by the third pump body 71 to the electronic control module 72, the heat absorbed by the second coolant from the first coolant in the oil cooler 5 can also be changed, thereby adjusting the cooling effect of the oil cooler 5 on the first coolant.

[0084] In some embodiments, such as Figure 3 , Figure 10 , Figure 11 As shown, the drive assembly 10 also includes a first main flow channel 81, which is located between the first motor 1 and the second motor 2. The inlet of the first main flow channel 81 is connected to the first outlet of the oil cooler 5. The outlet of the first main flow channel 81 is connected to the first flow channel 15 and the second flow channel 25.

[0085] Compared to setting two flow channels to connect the first flow channel 15 and the second flow channel 25 to the first outlet of the oil cooler 5 respectively, by setting the first main flow channel 81, the length of the flow path between the oil cooler 5, the first flow channel 15 and the second flow channel 25 can be reduced, thereby simplifying the structure of the drive assembly 10.

[0086] Specifically, if the first main channel 81 is a pipe connecting the oil cooler 5 and the first motor 1 and the second motor 2, the required length of the pipe between the oil cooler 5, the first channel 15 and the second channel 25 can be reduced to simplify the structure of the drive assembly 10.

[0087] like Figure 3 , Figure 10 As shown, the drive assembly 10 also includes a housing 91. If the first main flow channel 81 is a flow channel opened on the housing 91 or other components of the drive assembly 10, the structure of the housing 91 or other components of the drive assembly 10 can be simplified, thereby simplifying the structure of the drive assembly 10.

[0088] In some embodiments, such as Figure 10 , Figure 11 As shown, the drive assembly 10 also includes a first secondary flow channel 83, which extends along the axial direction of the first motor 1 and is located on the side of the first main flow channel 81 closer to the first motor 1. The inlet of the first secondary flow channel 83 is connected to the outlet of the first main flow channel 81, and the outlet of the first secondary flow channel 83 is connected to the inlet of the first flow channel 15.

[0089] With the provision of the first secondary flow channel 83, a portion of the first coolant flowing out from the first main flow channel 81 can flow along the axial direction of the first motor 1 toward the first motor 1, so that this portion of the first coolant can flow into the first flow channel 15, thereby facilitating the cooling of the first motor 1.

[0090] In some embodiments, such as Figure 10 , Figure 11 As shown, the drive assembly 10 also includes a second secondary flow channel 84, which extends along the axial direction of the second motor 2 and is located on the side of the first main flow channel 81 near the second motor 2. The inlet of the second secondary flow channel 84 is connected to the outlet of the first main flow channel 81, and the outlet of the second secondary flow channel 84 is connected to the inlet of the second flow channel 25.

[0091] With the provision of the second secondary flow channel 84, another portion of the first coolant flowing out from the first main flow channel 81 can flow along the axial direction of the second motor 2 toward the second motor 2, so that this portion of the first coolant can flow into the first flow channel 15, thereby facilitating the cooling of the second motor 2.

[0092] It should be noted that the first motor 1 and the second motor 2 are coaxially arranged.

[0093] In some embodiments, such as Figure 9 , Figure 10 , Figure 11As shown, the first motor 1 includes a first rotor 11 and a first reducer 12. Along a first direction, the first reducer 12 is located on the side of the first rotor 11 away from the second motor 2. The first direction is the axial direction of the first rotor 11.

[0094] The first flow channel 15 includes a first sub-flow channel 13 and a second sub-flow channel 14. The first sub-flow channel 13 is located on the first rotor 11, and the second sub-flow channel 14 is located on the first reducer 12.

[0095] In this way, the first rotor 11 and the first reducer 12 of the first motor 1 can be cooled through the first sub-flow channel 13 and the second sub-flow channel 14 respectively, ensuring the normal operation of the first motor 1.

[0096] In some embodiments, such as Figure 10 As shown, the first sub-channel 13 extends circumferentially along the first rotor 11. In this way, the first coolant can flow circumferentially along the first rotor 11, thereby improving the cooling effect of the first coolant on the first rotor 11.

[0097] In some embodiments, the first reducer 12 includes a first planetary gear set, a second planetary gear set, and a first sun gear; the first sun gear is driven between the first rotor 11 and the first planetary gear set, and the second planetary gear set is driven between the first planetary gear set and the wheel 20 of the vehicle 100.

[0098] It is understood that the first reducer 12 is a planetary reducer. Of course, in some other embodiments, the second reducer 22 may also be a gear reducer, etc.

[0099] like Figure 10 As shown, the second sub-channel 14 is provided with a first opening ( Figure 10 The opening shown is a), and the second opening is ( Figure 10 The opening shown is b) and the third opening ( Figure 10 As shown in the diagram (c), the first opening faces the second planetary gear set, the second opening faces the first planetary gear set, and the third opening faces the first sun gear. This allows the first coolant to flow through the first, second, and third openings to the second, first, and first planetary gear sets, respectively, thereby improving the cooling effect of the first coolant on the first reducer 12.

[0100] In some embodiments, such as Figure 10 , Figure 11 As shown, the first motor 1 also includes a first rotating shaft 93 and a first bearing 95. The first rotating shaft 93 is connected to the first rotor 11. The first bearing 95 is located on the side of the first rotor 11 near the first reducer 12 and is sleeved on the first rotating shaft 93 to support the first rotating shaft 93.

[0101] The second sub-channel 14 is also provided with a fourth opening ( Figure 10As shown in the diagram (opening d), the fourth opening faces the first bearing 95. In this way, the first coolant can also flow to the first bearing 95, thereby cooling and lubricating the first bearing 95.

[0102] In some embodiments, such as Figure 9 , Figure 10 , Figure 11 As shown, the second motor 2 includes a second rotor 21 and a second reducer 22. Along the second direction, the second reducer 22 is located on the side of the second rotor 21 away from the first motor 1. The second direction is the axial direction of the second rotor 21.

[0103] The second flow channel 25 includes a third sub-flow channel 23 and a fourth sub-flow channel 24. The third sub-flow channel 23 is located on the second rotor 21, and the fourth sub-flow channel 24 is located on the second reducer.

[0104] In this way, the second rotor 21 and the second reducer 22 of the second motor 2 can be cooled through the third sub-flow channel 23 and the fourth sub-flow channel 24 respectively, ensuring the normal operation of the second motor 2.

[0105] In some embodiments, such as Figure 10 As shown, the third sub-channel 23 extends circumferentially along the second rotor 21. This allows the first coolant to flow circumferentially along the second rotor 21, thereby improving the cooling effect of the first coolant on the second rotor 21.

[0106] In some embodiments, the second reducer 22 includes a third planetary gear set, a fourth planetary gear set, and a second sun gear; the second sun gear is driven between the second rotor 21 and the third planetary gear set, and the fourth planetary gear set is driven between the third planetary gear set and the wheel 20 of the vehicle 100.

[0107] It is understood that the second reducer 22 is a planetary reducer. Of course, in some other embodiments, the second reducer 22 may also be a gear reducer, etc.

[0108] The fourth sub-channel 24 is provided with a fifth opening ( Figure 10 The opening shown is e), the sixth opening ( Figure 10 The opening shown (f) and the seventh opening ( Figure 10 As shown in the diagram (g), the fifth opening faces the fourth planetary gear set, the sixth opening faces the third planetary gear set, and the seventh opening faces the second sun gear. This allows the first coolant to flow through the fifth, sixth, and seventh openings to the fourth planetary gear set, the third planetary gear set, and the second sun gear, respectively, thereby improving the cooling effect of the first coolant on the second reducer 22.

[0109] It should be noted that the fourth planetary gear set and the second planetary gear set are connected to different wheels 20 via transmission.

[0110] In some embodiments, such as Figure 10 , Figure 11 As shown, the second motor 2 also includes a second rotating shaft 94 and a second bearing 96. The second rotating shaft 94 is connected to the second rotor 21. The second bearing 96 is located on the side of the second rotor 21 near the second reducer 22 and is sleeved on the second rotating shaft 94 to support the second rotating shaft 94.

[0111] The fourth sub-channel 24 is also provided with an eighth opening ( Figure 10 The eighth opening (h) faces the second bearing 96. Thus, the first coolant can also flow to the second bearing 96, thereby cooling and lubricating it.

[0112] In some embodiments, such as Figure 10 , Figure 11 As shown, the first motor 1 also includes a third rotating shaft, and a third bearing 97 is disposed on the side of the second rotor 21 away from the second reducer 22 and sleeved on the first rotating shaft 93 to support the first rotating shaft 93.

[0113] The second motor 2 also includes a fourth bearing 98, which is located on the side of the second rotor 21 away from the second reducer 22 and is sleeved on the second shaft 94 to support the second shaft 94.

[0114] The drive assembly 10 also includes a second main channel 82, which is located between the first motor 1 and the second motor 2, and the inlet of the second main channel 82 is connected to the outlet of the first main channel 81.

[0115] In some embodiments, such as Figure 10 As shown, along the arrangement direction of the first motor 1 and the second motor 2, at least a portion of the second main channel 82 overlaps with at least a portion of the first motor 1, and at least a portion of the second main channel 82 overlaps with at least a portion of the second motor 2. The second main channel 82 is provided with a plurality of liquid outlets, a portion of which faces the first motor 1, and another portion of which faces the second motor 2.

[0116] The inlet of the second mainstream channel 82 is connected to the outlet of the first mainstream channel 81. The first coolant in the first mainstream channel 81 can also flow into the second mainstream channel 82. By placing the second mainstream channel 82 between the first motor 1 and the second motor 2, and making at least a part of the second mainstream channel 82 overlap with both the first motor 1 and the second motor 2, and having multiple outlets facing the first motor 1 and the second motor 2 respectively, the first coolant in the second mainstream channel 82 can be conveniently flow to the first motor 1 and the second motor 2, so as to cool and lubricate the first motor 1 and the second motor 2.

[0117] In some embodiments, such as Figure 10As shown, there are multiple liquid outlets, including the first outlet and the second outlet, and the first outlet of the second main channel 82. Figure 10 The opening i shown faces the third bearing 97, and the second outlet of the second main channel 82. Figure 10 The opening j shown is directed toward the fourth bearing 98.

[0118] In this way, the first coolant can also flow to the third bearing 97 and the fourth bearing 98, thereby cooling and lubricating the third bearing 97 and the fourth bearing 98.

[0119] In some embodiments, such as Figure 10 As shown, the second main channel 82 has a third outlet and a fourth outlet, the third outlet of the second main channel 82 ( Figure 10 The opening k shown faces the first rotor 11, and the fourth outlet of the second main channel 82. Figure 10 The opening o shown faces the second rotor 21.

[0120] In this way, the first coolant can also flow to the first rotor 11 and the second rotor 21 through the second main channel 82, so as to further improve the cooling effect of the first coolant on the first motor 1 and the second motor 2.

[0121] In some embodiments, such as Figure 5 , Figure 12 As shown, the drive assembly 10 also includes a filter 92. The first motor 1 and the second motor 2 are both housed in the housing 91, which is used to collect the first coolant flowing out of the first flow channel 15 and the first coolant flowing out of the second flow channel 25.

[0122] The filter 92 is located inside the housing 91 and connected to the bottom of the housing 91. The inlet of the filter 92 is connected to the inside of the housing 91, the first outlet of the filter 92 is connected to the inlet of the first pump body 3, and the second outlet of the filter 92 is connected to the inlet of the second pump body 4.

[0123] With the above configuration, the first coolant flowing out from the first flow channel 15 and the second flow channel 25 can be collected at the bottom of the housing 91 and flow into the filter 92 through the inlet of the filter 92. Part of the first coolant after being filtered by the filter 92 can flow into the first pump body 3 through the first outlet of the filter 92, and the other part of the first coolant after being filtered can flow into the second pump body 4 through the second outlet of the filter 92, and flow into the oil cooler 5 under the drive of the first pump body 3 and the second pump body 4.

[0124] By setting up filter 92, impurities in the first coolant can be filtered out and scale formation can be prevented, thereby ensuring the cooling effect of drive assembly 10 and ensuring that drive assembly 10 can operate smoothly.

[0125] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims. Those skilled in the art can understand that implementing all or part of the processes of the above embodiments and making equivalent changes according to the claims of this application still fall within the scope of this application.

Claims

1. A drive assembly (10), characterized in that, include: First motor (1), second motor (2), first pump body (3), second pump body (4) and oil cooler (5); The first motor (1) is provided with a first flow channel (15); the second motor (2) is provided with a second flow channel (25); the first pump body (3) and the second pump body (4) are both connected to the first flow channel (15) and the second flow channel (25), and the first pump body (3) and the second pump body (4) are both used to introduce the first coolant into the first flow channel (15) and the second flow channel (25); The oil cooler (5) is connected to the first pump body (3) and the second pump body (4) and is used to cool the first coolant flowing through the first pump body (3) and the first coolant flowing through the second pump body (4).

2. The drive assembly (10) according to claim 1, characterized in that, The inlet of the first pump body (3) is connected to the outlet of the first flow channel (15) and to the outlet of the second flow channel (25), and the outlet of the first pump body (3) is connected to the first inlet of the oil cooler (5). The inlet of the second pump body (4) is connected to the outlet of the first flow channel (15) and to the outlet of the second flow channel (25), and the outlet of the second pump body (4) is connected to the first inlet of the oil cooler (5); The first outlet of the oil cooler (5) is connected to the inlet of the first flow channel (15) and to the inlet of the second flow channel (25).

3. The drive assembly (10) according to claim 2, characterized in that, It also includes a regulating valve (6), the inlet of which is connected to the outlet of the first pump body (3) and the outlet of the second pump body (4); the first outlet of the regulating valve (6) is connected to the first inlet of the oil cooler (5), and the second outlet of the regulating valve (6) is connected to the inlet of the first flow channel (15) and the inlet of the second flow channel (25). The inlet of the regulating valve (6) can be connected to the first outlet and the second outlet of the regulating valve (6), and the regulating valve (6) can adjust the flow rate of the first coolant at the first outlet and the first coolant at the second outlet of the regulating valve (6).

4. The drive assembly (10) according to claim 3, characterized in that, The drive assembly (10) has a first working mode; when the drive assembly (10) is in the first working mode, the inlet of the regulating valve (6) is connected to the first outlet of the regulating valve (6) and disconnected from the second outlet of the regulating valve (6), and the first coolant flowing out from the regulating valve (6) flows through the oil cooler (5).

5. The drive assembly (10) according to claim 3, characterized in that, The drive assembly (10) has a second working mode; when the drive assembly (10) is in the second working mode, the inlet of the regulating valve (6) is connected to the second outlet of the regulating valve (6) and disconnected from the first outlet of the regulating valve (6), and the first coolant flowing out from the regulating valve (6) flows into the first flow channel (15) or the second flow channel (25).

6. The drive assembly (10) according to claim 3, characterized in that, It also includes a first controller, which is electrically connected to the regulating valve (6); The drive assembly (10) has a third working mode; when the drive assembly (10) is in the third working mode, the inlet of the regulating valve (6) is connected to the first outlet of the regulating valve (6) and is connected to the second outlet of the regulating valve (6); The first controller can control the regulating valve (6) to regulate the flow rate of the first coolant at the first outlet of the regulating valve (6) and the first coolant at the second outlet of the regulating valve (6) so as to regulate the temperature of the first coolant flowing into the first flow channel (15) and the temperature of the first coolant flowing into the second flow channel (25).

7. The drive assembly (10) according to claim 2, characterized in that, It also includes a third pump body (71) and an electrical control module (72), the electrical control module (72) being electrically connected to the first motor (1) and the second motor (2) for supplying power to the first motor (1) and the second motor (2); The outlet of the third pump body (71) is connected to the inlet of the electronic control module (72), the outlet of the electronic control module (72) is connected to the second inlet of the oil cooler (5), and the inlet of the third pump body (71) is connected to the second outlet of the oil cooler (5). The third pump body (71) is used to introduce a second coolant into the electronic control module (72). The second coolant is used to exchange heat with the electronic control module (72) and to exchange heat with the first coolant flowing through the oil cooler (5).

8. The drive assembly (10) according to claim 7, characterized in that, It also includes a second controller, which is electrically connected to the third pump body (71). The second controller is used to control the third pump body (71) to adjust the flow rate of the second coolant supplied by the third pump body (71) to the electronic control module (72).

9. The drive assembly (10) according to claim 2, characterized in that, It also includes a first main channel (81) and a second main channel (82). The first main channel (81) is located between the first motor (1) and the second motor (2). The inlet of the first main channel (81) is connected to the first outlet of the oil cooler (5). The outlet of the first main channel (81) is connected to the first flow channel (15) and the second flow channel (25). The second main channel (82) is located between the first motor (1) and the second motor (2), and the inlet of the second main channel (82) is connected to the outlet of the first main channel (81); along the arrangement direction of the first motor (1) and the second motor (2), at least a portion of the second main channel (82) overlaps with at least a portion of the first motor (1), and at least a portion of the second main channel (82) overlaps with at least a portion of the second motor (2); The second main channel (82) is provided with multiple liquid outlets, some of which face the first motor (1) and others of which face the second motor (2).

10. The drive assembly (10) according to claim 9, characterized in that, The drive assembly (10) further includes a first secondary flow channel (83), which extends along the axial direction of the first motor (1) and along the axial direction of the first motor (1), the first secondary flow channel (83) is located on the side of the first main flow channel (81) close to the first motor (1); the inlet of the first secondary flow channel (83) is connected to the outlet of the first main flow channel (81), and the outlet of the first secondary flow channel (83) is connected to the inlet of the first flow channel (15); And / or, the drive assembly (10) further includes a second secondary flow channel (84) extending along the axial direction of the second motor (2) and along the axial direction of the second motor (2), the second secondary flow channel (84) is located on the side of the first main flow channel (81) near the second motor (2); the inlet of the second secondary flow channel (84) is connected to the outlet of the first main flow channel (81), and the outlet of the second secondary flow channel (84) is connected to the inlet of the second flow channel (25).

11. The drive assembly (10) according to claim 2, characterized in that, The drive assembly (10) also includes a housing (91) and a filter (92); the first motor (1) and the second motor (2) are both located inside the housing (91), and the housing (91) is used to collect the first coolant flowing out from the first flow channel (15) and the first coolant flowing out from the second flow channel (25); The filter (92) is located inside the housing (91) and connected to the bottom of the housing (91); the inlet of the filter (92) is connected to the inside of the housing (91), the first outlet of the filter (92) is connected to the inlet of the first pump body (3), and the second outlet of the filter (92) is connected to the inlet of the second pump body (4).

12. A vehicle (100), characterized in that, Includes the drive assembly (10) as described in any one of claims 1-11.

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