Cooling and lubricating module, automobile and control method of automobile

Abstract

The embodiment of the invention provides a cooling and lubricating module, an automobile and an automobile control method, the cooling and lubricating module is applied to an electric drive assembly of the automobile, and the cooling and lubricating module comprises a support, a cooler and an oil pump. The support is provided with an oil loop which is used for conducting lubricating oil in the electric drive assembly. The cooler is arranged on the support and can cool lubricating oil flowing through the oil liquid loop. The oil pump is arranged on the support and connected with the oil loop, and the oil pump is used for pumping lubricating oil in the oil loop. And by arranging the support, the oil pump and the cooler are integrally arranged on the support, so that an oil loop is shortened. Besides, the cooling and lubricating module comprises an oil loop formed on the support, and an oil pump and a cooler which are integrally arranged on the support, so that all parts of the cooling and lubricating module are connected through the support to form an integral assembly, the integration level of the cooling and lubricating module is improved, the layout of the cooling and lubricating module is facilitated, and the space utilization rate is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and in particular to a cooling and lubricating module, an automobile, and a method for controlling the automobile. Background Art

[0002] As electric vehicles develop toward higher power density and greater integration, distributed electric drives have become a mainstream industry trend, offering advantages such as multiple independent drive points and improved space utilization. Compared to traditional centralized electric drives, distributed electric drives require higher cooling and lubrication requirements due to the need to simultaneously maintain the proper operation of two motors and reducers. Therefore, existing technologies often utilize separate oil pump and cooler layouts.

[0003] In the related art, the cooling and lubrication module adopts a method of arranging the oil pump near the bottom and the cooler near the top. This arrangement makes the cooling and lubrication module not highly integrated, affecting the flexibility of the vehicle layout. Summary of the Invention

[0004] In order to solve the above problems, embodiments of the present application provide a cooling and lubrication module, a vehicle, and a control method for the vehicle, which are conducive to improving the integration of the cooling and lubrication module.

[0005] The present application provides a cooling and lubrication module, which is applied to an electric drive assembly of an automobile. The cooling and lubrication module includes:

[0006] A support, wherein the support is provided with an oil circuit, and the oil circuit is used to conduct lubricating oil in the electric drive assembly;

[0007] a cooler, the cooler being disposed on the support and capable of cooling the lubricating oil flowing through the oil circuit;

[0008] An oil pump is arranged on the support and connected to the oil circuit. The oil pump is used to pump the lubricating oil in the oil circuit.

[0009] In one embodiment, the cooling and lubrication module includes a control valve, the oil circuit includes a main channel, a first sub-channel and a second sub-channel, both ends of the first sub-channel and both ends of the second sub-channel are connected to the main channel, so that the first sub-channel and the second sub-channel are arranged in parallel, the control valve is used to selectively open or disconnect the first sub-channel and the second sub-channel, the cooler is connected to the first sub-channel, and the cooler can cool the lubricating oil flowing through the first sub-channel.

[0010] In one embodiment, the support includes a first interface and a second interface respectively arranged at both ends of the oil circuit, and the electric drive assembly includes a main oil channel and a third interface and a fourth interface both connected to the main oil channel, the first interface is connected to the third interface, and the second interface is connected to the fourth interface.

[0011] In one embodiment, the support includes a fifth interface and a sixth interface both connected to the oil circuit, and a seventh interface and an eighth interface are provided on the cooler, the fifth interface is connected to the seventh interface, and the sixth interface is connected to the eighth interface.

[0012] In one embodiment, a cooling channel is provided in the cooler, and the cooling channel is used to conduct the coolant of the automobile and exchange heat with the lubricating oil flowing through the cooler.

[0013] In one embodiment, the cooler is provided with a ninth interface connected to the cooling channel, the support is provided with a connecting channel, and a tenth interface is provided on the motor box of the electric drive assembly, and the ninth interface is connected to the tenth interface through the connecting channel.

[0014] In one embodiment, the cooling and lubrication module includes a filter, which is connected to the oil circuit and is used to filter the lubricating oil flowing through the module.

[0015] In one embodiment, the electric drive assembly includes a motor case, and the cooler, the oil pump, and the filter are arranged on the support along the axial direction of the motor case.

[0016] An embodiment of the present application provides a car, including:

[0017] A cooling and lubrication module according to any embodiment of the present application;

[0018] The electric drive assembly includes a main oil channel, and the oil circuit is connected to the main oil channel.

[0019] An embodiment of the present application provides a control method for an automobile, which is applied to an automobile, wherein the automobile includes a cooling and lubrication module, which is applied to an electric drive assembly of the automobile, and the cooling and lubrication module includes a support, a cooler, and an oil pump; the support is provided with an oil circuit, which is used to conduct lubricating oil in the electric drive assembly; the cooler is provided on the support; the oil pump is provided on the support and connected to the oil circuit, and is used to pump the lubricating oil in the oil circuit; the cooling and lubrication module includes a control valve, the oil circuit includes a main channel, a first sub-channel, and a second sub-channel, both ends of the first sub-channel and both ends of the second sub-channel are connected to the main channel, so that the first sub-channel and the second sub-channel are arranged in parallel, the control valve is used to selectively open or disconnect the first sub-channel and the second sub-channel, the cooler is connected to the first sub-channel, and the cooler can cool the lubricating oil flowing through the first sub-channel; when the automobile is in a driving state, the control method includes:

[0020] obtaining the temperature of the lubricating oil entering the main channel;

[0021] If the temperature of the lubricating oil entering the main channel is greater than a set temperature, the control valve opens the first sub-channel and disconnects the second sub-channel, and the cooler cools the lubricating oil flowing through the first sub-channel;

[0022] If the temperature of the lubricating oil entering the main channel is less than or equal to a set temperature, the control valve opens the second sub-channel and opens the first sub-channel.

[0023] The cooling and lubrication module provided in the present application is provided with an oil circuit, a cooler and an oil pump. The oil pump is used to pump the lubricating oil in the oil circuit so that the lubricating oil is cooled after passing through the cooler, thereby realizing the cooling of the lubricating oil in the electric drive assembly, which is beneficial to providing good lubrication and cooling conditions for the electric drive assembly. By providing a support, the oil pump and the cooler are integrated on the support, which is beneficial to shortening the oil circuit. In addition, the cooling and lubrication module includes an oil circuit formed on the support, an oil pump and a cooler integrated on the support, so that the various components of the cooling and lubrication module are connected through the support to form an integral component, which is beneficial to improving the integration of the cooling and lubrication module, thereby facilitating the layout of the cooling and lubrication module and improving space utilization. In addition, the assembly efficiency can be improved by pre-installing the cooling and lubrication module before assembling it to the motor box. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the installation structure of the cooling and lubrication module in one embodiment of the present application;

[0025] Figure 2This is a schematic diagram of a cooling and lubrication module according to an embodiment of the present application;

[0026] Figure 3 for Figure 1 Exploded view of the cooling and lubrication module installation structure;

[0027] Figure 4 This is a schematic diagram of the oil circuit inside the support in one embodiment of the present application;

[0028] Figure 5 This is a schematic structural diagram of a cooling and lubrication module in one embodiment of the present application;

[0029] Figure 6 for Figure 5 Exploded view of the cooling and lubrication module;

[0030] Figure 7 This is a structural diagram of a support in one embodiment of the present application;

[0031] Figure 8 This is a flow chart of a method for controlling a vehicle in one embodiment of the present application.

[0032] Description of Reference Numerals

[0033] 100. Cooling and lubrication module; 10. Support; 1. Oil circuit; 11. Main channel; 111. First oil channel; 112. Second oil channel; 113. Third oil channel; 114. Fourth oil channel; 115. Fifth oil channel; 116. Tenth oil channel; 117. First oil reservoir; 118. Second oil reservoir; 119. Third oil reservoir; 12. First sub-channel; 121. Sixth oil channel; 122. Ninth oil channel; 13. Second sub-channel; 131. Seventh oil channel; 132. Eighth oil channel; 14. First interface; 15. Second interface; 16. Fifth interface; 17. Sixth interface; 18. Connecting channel; 20. Cooler; 21. Seventh interface ; 22. Eighth interface; 23. Ninth interface; 24. Eleventh interface; 30. Oil pump; 31. Pump oil inlet; 32. Pump oil outlet; 40. Control valve; 41. Control inlet; 42. First control outlet; 43. Second control outlet; 50. Filter; 51. Filter oil inlet; 52. Filter oil outlet; 200. Electric drive assembly; 201. Motor box; 2011. Third interface; 2014. Fourth interface; 2015. Tenth interface; 202. Water pipe joint assembly; 203. Oil tank; 204. Stator; 205. Rotor; 206. Shaft gear; 300. Water cooling system; 310. Motor controller; 320. Vehicle cooling module. DETAILED DESCRIPTION

[0034] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily appreciate the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the various details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0035] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0036] The present application embodiment provides a car, see Figure 1 and Figure 2 The automobile includes the cooling and lubrication module 100 and the electric drive assembly 200 of any embodiment of the present application. The electric drive assembly 200 includes a main oil channel, and the oil circuit 1 of the cooling and lubrication module 100 is connected to the main oil channel.

[0037] The electric drive assembly 200 is the power unit of an electric vehicle. It includes components such as a motor, a speed reducer, and a controller. It converts electrical energy into mechanical energy to propel the vehicle. Some components within the electric drive assembly 200 require lubrication and cooling to reduce friction and heat generated by the moving parts.

[0038] The main oil gallery connects to the vehicle's oil pan, delivering lubricating oil from the oil pan to various parts requiring lubrication and cooling. The lubricating oil flow channel (i.e., oil circuit 1) in the cooling and lubrication module 100 connects to the main oil gallery of the electric drive assembly 200, forming a complete lubricating oil circulation system. The lubricating oil in the oil pan circulates through the main oil gallery and oil circuit 1, completing both lubrication and cooling.

[0039] Here, the lubricating oil can lubricate and cool the stator 204 and the rotor 205 of the motor and the shaft teeth 206 of the reducer. After the lubricating oil has achieved cooling and lubrication, it will eventually flow back to the oil tank 203.

[0040] As electric vehicles develop toward higher power density and greater integration, distributed electric drives have become a mainstream industry trend, offering advantages such as multiple independent drive points and improved space utilization. Compared to traditional centralized electric drives, the cooling and lubrication systems of distributed electric drives must simultaneously ensure the proper operation of two motors and reducers, placing higher demands on cooling and lubrication. Therefore, existing technologies often employ separate designs for the oil pump 30 and cooler 20.

[0041] In the prior art, the oil pump 30 is positioned near the bottom, while the cooler 20 is located near the top. This arrangement increases the overall size of the electric drive assembly 200, reduces system integration, and limits vehicle layout flexibility. Furthermore, a decentralized layout prevents the placement of oil lines in close proximity, requiring multiple internal oil passages through the motor case 201. This increases the complexity and numerous steps involved in machining the oil passages within the motor case 201, and may also lead to casting defects caused by thick, large areas.

[0042] The present application embodiment provides a cooling and lubricating module 100, see Figures 1 to 7 The cooling and lubrication module 100 is applied to the electric drive assembly 200 of the automobile. The cooling and lubrication module 100 includes a support 10, a cooler 20 and an oil pump 30. The support 10 is provided with an oil circuit 1, which is used to conduct the lubricating oil in the electric drive assembly 200. The cooler 20 is provided on the support 10, and the cooler 20 can cool the lubricating oil flowing through the oil circuit 1. The oil pump 30 is provided on the support 10 and is connected to the oil circuit 1. The oil pump 30 is used to pump the lubricating oil in the oil circuit 1.

[0043] The cooling and lubrication module 100 is used to cool and transport the lubricating oil in the electric drive assembly 200 so that the lubricating oil is maintained within a suitable temperature range, thereby ensuring the normal operation of the electric drive assembly 200 and increasing the service life of the electric drive assembly 200.

[0044] The support 10 supports and fixes other components in the cooling and lubricating module 100 . The support 10 is also provided with an oil circuit 1 , which is a channel carrier for the lubricating oil to flow in the cooling and lubricating module 100 .

[0045] For example, the material of the support 10 can be selected from aluminum alloy or other materials with good thermal conductivity and mechanical strength, which can not only help dissipate the heat of the lubricating oil, but also improve the bearing capacity of the support 10.

[0046] The oil circuit 1 refers to the lubricating oil flow path designed inside the support 10. The lubricating oil in the electric drive assembly 200 can pass through the oil pump 30 and the cooler 20 through this flow path. In addition, the lubricating oil circulation system formed by the connection between the oil circuit 1 and the main oil channel can realize the recycling of lubricating oil. The oil circuit 1 is set inside the support 10. Compared with being set inside the motor box 201, it is also beneficial to reduce the processing and manufacturing difficulty of the oil circuit 1. The motor box 201 does not need to process the complex oil circuit 1, and the structural strength of the motor box 201 can be improved.

[0047] Cooler 20 is a component within the cooling and lubrication module 100 that cools the lubricating oil. Through heat exchange, cooler 20 dissipates heat generated by the lubricating oil during operation, maintaining the lubricating oil within a suitable operating temperature range. As the lubricating oil in the oil circuit 1 passes through cooler 20, heat is exchanged, reducing the heat content within the lubricating oil and achieving a cooling effect on the lubricating oil.

[0048] For example, the cooler 20 may be a fin-type structure, which increases the heat dissipation area to improve the cooling efficiency. The fins may be made of aluminum, which has the characteristics of light weight and good thermal conductivity.

[0049] For example, a plurality of independent cooling pipes may be provided inside the cooler 20 so that the lubricating oil can more fully exchange heat with the cooling medium (such as air or coolant) in the cooling pipes.

[0050] Exemplarily, the cooler 20 is a heat dissipation structure wrapped around the oil circuit 1. When the lubricating oil passes through the cooler 20, it comes into contact with the heat dissipation structure of the cooler 20 through the material of the support 10 constituting the oil circuit 1. The heat on the lubricating oil is first transferred to the material of the support 10 constituting the oil circuit 1, and then transferred to the heat dissipation structure of the cooler 20.

[0051] In addition, a temperature sensor can be installed on the cooler 20 to monitor the temperature of the lubricating oil in real time and automatically adjust the cooling intensity according to temperature changes to achieve intelligent control.

[0052] Lubricating oil is a liquid medium used to reduce friction and wear between components within the electric drive assembly 200, as well as aid in heat dissipation. During operation of the electric drive system, the lubricating oil continuously circulates, removing heat generated by friction and impurities such as metal debris.

[0053] The oil pump 30 generates pressure through mechanical movement, pushing the lubricating oil to flow in the oil circuit 1. The end of the oil pump 30 close to the cooler 20 pushes the lubricating oil through the cooler 20, and after cooling, lubricates and cools the electric drive assembly 200. The end of the oil pump 30 away from the cooler 20 sucks to complete lubrication and cooling, and the lubricating oil with increased temperature is realized to realize the circulation of the lubricating oil, thereby realizing the circulation of the lubricating oil after lubricating and cooling the components. In addition, the pumping action of the oil pump 30 enables the lubricating oil to be delivered to various parts of the electric drive assembly 200 that require lubrication and cooling in a timely and sufficient manner.

[0054] The cooling and lubrication module 100 provided in the present application is provided with an oil circuit 1, and a cooler 20 and an oil pump 30. The oil pump 30 is used to pump the lubricating oil in the oil circuit 1 so that the lubricating oil is cooled after passing through the cooler 20, thereby realizing the cooling of the lubricating oil in the electric drive assembly 200, which is beneficial to providing good lubrication and cooling conditions for the electric drive assembly 200. By providing a support 10, the oil pump 30 and the cooler 20 are integrated on the support 10, which is beneficial to shortening the oil circuit 1. In addition, the cooling and lubrication module 100 includes an oil circuit 1 formed on the support 10, an oil pump 30 and a cooler 20 integrated on the support 10, so that the various components of the cooling and lubrication module 100 are connected through the support 10 to form an integral assembly, which is beneficial to improving the integration of the cooling and lubrication module 100, thereby facilitating the layout of the cooling and lubrication module 100 and improving space utilization. In addition, the assembly efficiency can be improved by pre-assembling the cooling and lubrication module 100 before assembling it to the motor box 201.

[0055] In some embodiments, see Figures 1 to 7 The cooling and lubrication module 100 includes a control valve 40, and the oil circuit 1 includes a main channel 11, a first sub-channel 12, and a second sub-channel 13. Both ends of the first sub-channel 12 and both ends of the second sub-channel 13 are connected to the main channel 11, so that the first sub-channel 12 and the second sub-channel 13 are arranged in parallel. The control valve 40 is used to selectively open or disconnect the first sub-channel 12 and the second sub-channel 13. The cooler 20 is connected to the first sub-channel 12, and the cooler 20 can cool the lubricating oil flowing through the first sub-channel 12.

[0056] Main channel 11 is the backbone of oil circuit 1 and serves as the primary path for lubricating oil to flow within cooling and lubrication module 100. Both ends of first sub-channel 12 and second sub-channel 13 are connected to main channel 11, placing them in parallel. Main channel 11 collects and distributes lubricating oil.

[0057] The first sub-channel 12 is in communication with the main channel 11 and is connected in parallel with the second sub-channel 13 . Its function is to guide part of the lubricating oil to the cooler 20 for cooling and then return it to the main channel 11 .

[0058] The second sub-channel 13 is also connected to the main channel 11 and in parallel with the first sub-channel 12 . Under the control of the control valve 40 , the second sub-channel 13 can serve as a path for the lubricating oil to flow directly to the main channel 11 without passing through the cooler 20 .

[0059] The main channel 11 is connected to the main oil channel of the electric drive assembly 200. When the lubricating oil in the main oil channel enters the oil circuit 1, it first enters the main channel 11. In the main channel 11, it can be distributed to flow to the first sub-channel 12 and / or the second sub-channel 13. After flowing out of the first sub-channel 12 and / or the second sub-channel 13, it is gathered in the main channel 11 and finally flows out of the oil circuit 1 from the main channel 11 and flows back to the main oil channel.

[0060] The control valve 40 is a component in the cooling and lubricating module 100 for controlling the flow path of the lubricating oil. By opening or closing different channels, the flow direction of the lubricating oil is selectively turned on or off, thereby adjusting the circulation mode of the lubricating oil.

[0061] For example, control valve 40 disconnects second sub-channel 13 and connects first sub-channel 12. This allows the lubricating oil in main channel 11 to flow from main channel 11 to first sub-channel 12, and then back from first sub-channel 12 to main channel 11. Because cooler 20 is connected to first sub-channel 12, the lubricating oil flowing through first sub-channel 12 can pass through cooler 20, cooling the lubricating oil.

[0062] Exemplarily, the control valve 40 controls the first sub-channel 12 to be disconnected and the second sub-channel 13 to be connected. In this way, the lubricating oil in the main channel 11 flows from the main channel 11 to the second sub-channel 13, and finally flows from the second sub-channel 13 back to the main channel 11. The lubricating oil flowing through the second sub-channel 13 does not need to pass through the cooler 20, and the lubricating oil can directly skip the cooler 20 and flow back to the main channel 11. In this way, when the temperature of the lubricating oil in the oil circuit 1 is not high, for example, when the vehicle has just started, the components of the electric drive assembly 200 have not generated enough heat, and the temperature of the lubricating oil passing through is not high. The lubricating oil does not need to pass through the cooler 20 for cooling, and can be circulated directly, which is beneficial to improving the circulation efficiency of the lubricating oil.

[0063] The structure of the control valve 40 is not limited herein. For example, the control valve 40 is a three-way valve including a control inlet 41, a first control outlet 42, and a second control outlet 43. The control inlet 41 is connected to the main channel 11, the first control outlet 42 is connected to the first sub-channel 12, and the second control outlet 43 is connected to the second sub-channel 13.

[0064] For example, the control valve 40 may be a solenoid valve or a hydraulic valve, which controls the movement of the valve core 40 through electronic signals or hydraulic pressure to achieve precise control of the channel.

[0065] In some embodiments, a plurality of throttle holes of different sizes may be provided inside the control valve 40 to adjust the flow of the lubricating oil according to different working modes.

[0066] By selectively opening or closing the first and second sub-channels 12 and 13 through the control valve 40, the cooling and lubrication module 100 can flexibly adjust the cooling method of the lubricating oil according to the different operating conditions of the electric drive assembly 200. For example, during the initial startup of the electric drive assembly 200, when the lubricating oil temperature is relatively low, the control valve 40 can be used to open the second sub-channel 13, allowing the lubricating oil to circulate directly without passing through the cooler 20, quickly reaching the operating temperature. When the electric drive assembly 200 is operating at high load, the first sub-channel 12 is opened to fully cool the lubricating oil, ensuring the normal operation of the electric drive assembly 200 and improving the adaptability of the cooling and lubrication system to different operating conditions.

[0067] In some embodiments, see Figures 1 to 7 The support 10 includes a first interface 14 and a second interface 15 respectively arranged at both ends of the oil circuit 1. The electric drive assembly 200 includes a main oil channel and a third interface 2011 and a fourth interface 2014 both connected to the main oil channel. The first interface 14 is connected to the third interface 2011, and the second interface 15 is connected to the fourth interface 2014.

[0068] The first interface 14 and the second interface 15 are connecting components arranged on one end of the oil circuit 1 on the support 10. The third interface 2011 and the fourth interface 2014 are interfaces on the electric drive assembly 200 that are connected to the main oil channel. The first interface 14 is connected to the third interface 2011, and the second interface 15 is connected to the fourth interface 2014, so that the oil circuit 1 is connected to the main oil channel of the electric drive assembly 200, realizing the circulation and transmission of lubricating oil.

[0069] A first interface 14 and a second interface 15 are provided at both ends of the oil circuit 1; the electric drive assembly 200 has a third interface 2011 and a fourth interface 2014 connected to the main oil channel. By connecting the first interface 14 of the support 10 to the third interface 2011 of the electric drive assembly 200, and the second interface 15 to the fourth interface 2014, the oil circuit 1 of the cooling and lubrication module 100 and the main oil channel of the electric drive assembly 200 are connected. In this way, lubricating oil can circulate between the main oil channel of the electric drive assembly 200 and the oil circuit 1 of the cooling and lubrication module 100. The high-temperature lubricating oil generated by the operation of the electric drive assembly 200 can flow into the oil circuit 1, be cooled by the cooler 20, be pumped by the oil pump 30, and then return to the main oil channel, providing good lubrication and cooling conditions for the various components of the electric drive assembly 200 and ensuring the normal operation of the electric drive assembly 200.

[0070] In some embodiments, see Figures 1 to 7 The support 10 includes a fifth interface 16 and a sixth interface 17 both connected to the oil circuit 1. The cooler 20 is provided with a seventh interface 21 and an eighth interface 22. The fifth interface 16 is connected to the seventh interface 21, and the sixth interface 17 is connected to the eighth interface 22.

[0071] The fifth interface 16 and the sixth interface 17 are interfaces on the support 10 that are connected to the oil circuit 1, and the seventh interface 21 and the eighth interface 22 are interfaces set on the cooler 20. The fifth interface 16 is connected to the seventh interface 21, and the sixth interface 17 is connected to the eighth interface 22, so that the lubricating oil flowing out of the oil circuit 1 of the support 10 can smoothly enter the cooler 20 for cooling treatment.

[0072] The support 10 is provided with a fifth interface 16 and a sixth interface 17 that are connected to the oil circuit 1, and the cooler 20 is correspondingly equipped with a seventh interface 21 and an eighth interface 22. By connecting the fifth interface 16 of the support 10 with the seventh interface 21 of the cooler 20, and connecting the sixth interface 17 with the eighth interface 22, a flow path for the lubricating oil is established between the support 10 and the cooler 20. In this way, the lubricating oil flowing from the electric drive assembly 200 into the oil circuit 1 of the support 10 can enter the cooler 20 through the fifth interface 16 and the seventh interface 21 in sequence. After cooling in the cooler 20, it can flow back to the oil circuit 1 of the support 10 through the eighth interface 22 and the sixth interface 17, and finally return to the electric drive assembly 200, thereby achieving continuous cooling and lubrication of the electric drive assembly 200.

[0073] In some embodiments, see Figures 1 to 7 A cooling channel is provided in the cooler 20 , and the cooling channel is used to conduct the coolant of the automobile and exchange heat with the lubricating oil flowing through the cooler 20 .

[0074] The cooling channel is a specially designed channel inside the cooler 20 for circulating the coolant, and heat exchange between the coolant and the lubricating oil is performed to achieve cooling of the lubricating oil.

[0075] Automobile coolant is a liquid that circulates in the automobile cooling system. It is usually a mixture of water, antifreeze and additives. It has a high specific heat capacity and can absorb and take away a large amount of heat. It exchanges heat with the lubricating oil in the cooler 20, thereby reducing the temperature of the lubricating oil.

[0076] It should be noted that the cooling channel and the oil circuit 1 are not connected, and the cooling channel and the oil circuit 1 exchange heat through the cooler 20 .

[0077] For example, the cooling channels can be designed as multiple channels connected in parallel or in series. The parallel structure can increase the coolant's circulation area, allowing the coolant to exchange heat with the lubricant more evenly; the series structure can extend the contact time between the coolant and the lubricant, improving heat exchange efficiency.

[0078] A dedicated cooling channel is provided inside the cooler 20, which is connected to the coolant circulation system of the vehicle, and the coolant can flow in the channel. When the lubricating oil with a higher temperature flows through the cooler 20, there is a temperature difference between the lubricating oil and the coolant in the cooling channel. According to the principle of heat transfer, heat will be transferred from the high-temperature lubricating oil to the low-temperature coolant. In this way, the temperature of the lubricating oil is reduced, and the coolant absorbs heat and its temperature rises. The heated coolant will then flow back to the coolant circulation system of the vehicle for heat dissipation, thereby achieving continuous cooling of the lubricating oil, ensuring that the lubricating oil is always at a suitable operating temperature, and providing a good lubrication and cooling environment for components such as the vehicle's electric drive assembly 200.

[0079] In some embodiments, see Figures 1 to 7 The cooler 20 is provided with a ninth interface 23 connected to the cooling channel, the support 10 is provided with a connecting channel 18, and a tenth interface 2015 is provided on the motor box 201 of the electric drive assembly 200. The ninth interface 23 is connected to the tenth interface 2015 through the connecting channel 18.

[0080] The ninth interface 23 is an interface provided on the cooler 20 , is connected to the cooling channel, and is a channel interface for the coolant to enter and exit the cooler 20 .

[0081] The connecting channel 18 is located inside the support 10 and is used to connect the ninth interface 23 of the cooler 20 and the tenth interface 2015 on the motor box 201 to provide a flow path for the coolant or oil.

[0082] The tenth interface 2015 is provided on the motor box 201 of the electric drive assembly 200 and is connected to the ninth interface 23 of the cooler 20 through the connecting channel 18 , so that the coolant or oil can circulate between the cooler 20 and the motor box 201 .

[0083] In some embodiments, the cooler 20 is provided with an eleventh port 24 communicating with the cooling channel, and the coolant passing through the cooler 20 flows out from the eleventh port 24 .

[0084] The cooling channel of cooler 20 is connected to ninth port 23, meaning that coolant can enter cooler 20 through ninth port 23, completing the heat exchange process. Connecting channel 18 in support 10 acts as a bridge, connecting ninth port 23 of cooler 20 with tenth port 2015 on motor case 201. Coolant can enter cooler 20 from motor case 201, pass through tenth port 2015, connecting channel 18, and ninth port 23, and be cooled.

[0085] Exemplarily, a cooling channel is provided in the cooler 20. When the motor controller 310 of the automobile requests cooling, the coolant of the entire vehicle enters the motor box 201 (there is an internal heat dissipation channel in the motor box 201) through the water pipe joint assembly 202 to dissipate heat to the power module assembly of the motor controller 310. After operation, it can be connected to the cooling and lubrication module 100 through the tenth interface 2015 of the motor box 201, enter the connecting channel 18, and thus reach the ninth interface 23. After heat exchange occurs internally, the coolant flows out from the eleventh interface 24 and enters the vehicle heat dissipation module 320 to realize the water circulation of the entire vehicle, thereby reducing the external pipeline from the electric drive assembly 200 to the cooler 20, achieving the optimal cost of the entire vehicle and a compact layout.

[0086] For example, the interfaces of key components on the cooling and lubrication module 100, including the oil pump 30, filter 50, cooler 20, and control valve 40, can be standardized based on the actual interfaces of the distributed electric drive system. Furthermore, the cooling and lubrication module 100 can be quickly adapted to the distributed electric drive system and the entire vehicle system. The interfaces of the first interface 14, the second interface 151, and the cooling channel of each platform electric drive system and the cooling and lubrication module 100, as well as the three oil and water inlets, are unified to achieve modular expansion, thereby ensuring high integration with the electric drive assembly 200 and independent assembly or disassembly as an independent module.

[0087] Exemplarily, the automobile includes a thermally coupled water cooling system 300, which includes a motor controller 310 and a vehicle heat dissipation module 320. After the coolant in the water cooling system 300 flows through the water pipe joint assembly 202 of the motor box 201, it first cools the electronic control system, then flows through the cooling and lubrication module 100, enters the cooler 20 for heat exchange, and finally returns to the vehicle heat dissipation module 320 (the separate water cooling heat dissipation module is independent of the oil circuit) through the water outlet of the cooler 20, realizing water circulation. Compared with the separate layout design, the use of external pipes between the water outlet of the motor box 201 and the cooler 20 can be reduced, the vehicle cost is optimized, and the layout is compact.

[0088] In some embodiments, see Figures 1 to 7The oil circuit 1 includes a filter 50, which is connected to the oil circuit 1 and is used to filter the lubricating oil flowing through it.

[0089] The filter 50 is installed in the oil circuit 1 and is a device that uses filter media to intercept impurities in the lubricating oil. It purifies the lubricating oil through physical isolation or adsorption to maintain its cleanliness and lubrication performance.

[0090] The location of the filter 50 is not limited herein. For example, the filter 50 can be installed on the main channel 11. In this way, all lubricating oil flowing through the oil circuit 1 must flow through the filter 50 and be filtered by the filter 50. Of course, to achieve a better filtering effect, the filter 50 can also be installed on the first sub-channel 12 and the second sub-channel 13.

[0091] As lubricating oil circulates in oil circuit 1, it passes through filter 50. Filter 50, with its inherent filtering structure, traps impurities in the lubricating oil, such as metal particles from component wear, sludge from lubricating oil oxidation, and dust from the outside world, on its filter element. The purified lubricating oil then continues to flow through oil circuit 1, providing clean lubrication and cooling for the various components of the electric drive assembly 200. This prevents impurities-induced component wear and oil line blockage, ensuring stable operation of the electric drive system.

[0092] For example, the first interface 14, the second interface 15, the third interface 2011, the fourth interface 2014, the fifth interface 16, the sixth interface 17, the seventh interface 21, the eighth interface 22, the ninth interface 23, the tenth interface 2015, the eleventh interface 24, and other interfaces can adopt a standard interface structure, which facilitates the modular expansion of the cooling and lubrication module 100 and the expansion of products on the same platform. Due to the high integration of the electric drive assembly 200, it can be assembled and disassembled as an independent module.

[0093] In some embodiments, the oil channel inlet and outlet, water channel inlet and outlet, and threaded interfaces in the cooling and lubrication module 100 are standardized, which is conducive to the rapid adaptation of the electric drive system platform and improves the freedom of layout; further, through modular assembly, the changeover time is shortened and the assembly convenience can be improved.

[0094] For example, various interfaces can adopt a variety of connection methods. For example, a quick-disconnect connector with a locking mechanism can be used. During installation, it only needs to be aligned, inserted, and locked. During removal, the connector can be separated by pressing the unlocking button, which greatly improves the convenience of assembly and maintenance. Alternatively, a flange connection can be used. It is fixed by bolts and sealed with a gasket. It can withstand high oil pressure and is suitable for scenarios with high requirements for connection strength and sealing. In addition, a guide groove can be designed inside the interface to guide the smooth inflow and outflow of lubricating oil, reducing pressure fluctuations caused by fluid impact.

[0095] For example, see Figures 1 to 7 , Figure 5 The interior of the middle support 10 is provided with Figure 4 The oil circuit 1 shown in FIG. The oil circuit 1 includes a main channel 11, a first sub-channel 12, and a second sub-channel 13. The main channel 11 includes a first oil channel 111, a second oil channel 112, a third oil channel 113, a fourth oil channel 114, a fifth oil channel 115, a tenth oil channel 116, a first oil reservoir 117, a second oil reservoir 118, and a third oil reservoir 119. The first sub-channel 12 includes a sixth oil channel 121, a ninth oil channel 122, a fifth port 16, and a sixth port 17. The second sub-channel 13 includes a seventh oil channel 131 and an eighth oil channel 132.

[0096] See also Figure 3 、 Figure 4 and Figure 5 One end of the first oil storage chamber 117 is connected to the pump inlet 31 of the oil pump 30, and the other end is connected to the first oil channel 111. One end of the second oil storage chamber 118 is connected to the pump outlet 32 ​​of the oil pump 30, and the other end is connected to the second oil channel 112. One end of the third oil storage chamber 119 is connected to the third oil channel 113, and the other end is connected to the filter inlet 51 of the filter 50, and the filter outlet 52 is connected to the fourth oil channel 114. The fifth interface 16 is connected to the seventh interface 21 of the cooler 20, and the sixth interface 17 is connected to the eighth interface 22 of the cooler 20. The flow route of the lubricating oil in the oil circuit 1 is as follows:

[0097] Lubricating oil enters the first oil passage 111 from the first port 14, flows into the first oil reservoir 117 through the pump inlet 31 of the oil pump 30, and flows out of the pump outlet 32 ​​of the oil pump 30 to the second oil reservoir 118. It then flows through the second oil passage 112 and the third oil passage 113, and into the third oil reservoir 119. Within the third oil reservoir 119, the lubricating oil flows into the filter 50 from the filter inlet 51 of the filter 50, where it is filtered. It then flows into the fourth oil passage 114 from the filter outlet 52, and then into the fifth oil passage 115. The control valve 40 selectively connects the fifth oil passage 115 with the sixth oil passage 121, and selectively connects the fifth oil passage 115 with the seventh oil passage 131.

[0098] The fifth port 16 is connected to the seventh port 21 on the cooler 20, and the sixth port 17 is connected to the eighth port 22 on the cooler 20. When the fifth oil passage 115 and the sixth oil passage 121 are connected, the lubricating oil flows from the fifth oil passage 115 through the sixth oil passage 121, enters the cooler 20 for cooling, and finally flows out of the sixth port 17, enters the ninth oil passage 122, and finally flows out of the tenth oil passage 116.

[0099] When fifth oil passage 115 and seventh oil passage 131 are connected, lubricating oil flows from fifth oil passage 115 through seventh oil passage 131 and eighth oil passage 132 before exiting tenth oil passage 116. Cooling and lubrication module 100 is equipped with multiple independent oil passages, including those for the oil pump 30, filter 50, and control valve 40. This prevents leakage between oil passages caused by casting defects in thick and large areas.

[0100] For example, the support 10 is further provided with a cooler 20 and a control valve 40. The fifth port 16 and the sixth port 17 of the support 10 are respectively connected to the seventh port 21 and the eighth port 22 of the cooler 20. The first oil passage 111 is connected to the control inlet 41, the seventh oil passage 131 is connected to the first control outlet 42, and the sixth oil passage 121 is connected to the second control outlet 43.

[0101] For example, the third interface 2011 and the fourth interface 2014 are provided on the motor case 201. The cooling and lubrication module 100 is located near the oil pan of the electric drive assembly 200 and is fixed to the motor case 201. The motor case 201 is provided with a built-in main oil channel, whose oil outlet is the third interface 2011 and the oil return port is the fourth interface 2014. These channels are connected to the first interface 14 and the second interface 15 of the support 10, respectively, to form a lubricating oil circulation loop.

[0102] The cooling and lubrication module 100 is located near the oil pan of the electric drive assembly 200. This structure shortens the flow path of the oil circulation circuit inside the electric drive, making the distributed electric drive structure compact and improving the cooling and lubrication efficiency.

[0103] In some embodiments, see Figures 1 to 7 The electric drive assembly 200 includes a motor box 201 , a cooler 20 , an oil pump 30 and a filter 50 which are arranged on a support 10 along the axial direction of the motor box 201 .

[0104] The motor box 201 is used to accommodate and protect the motor, transmission components, etc., and provides a shell structure for installation support and protection for the internal components of the electric drive assembly 200.

[0105] The "axial direction of the motor box 201" refers to the axial direction of the motor box 201 in the extension direction of its main structure. Generally speaking, the motor box 201 is a structure with a certain shape and size, usually a relatively regular shape such as a cuboid or a cylinder.

[0106] Taking a common cylindrical motor case 201 as an example, its axial direction is the central axis of the cylinder, that is, the axis along the length of the cylinder. In this direction, the length of the motor case 201 is relatively long, and the motor shaft is usually arranged along this axial direction, so that the motor rotor 205 can rotate along the axial direction within the motor case 201, thereby driving other connected components to operate.

[0107] For the rectangular motor box 201, the axial direction usually refers to the longer dimension, and the relevant components of the motor will also be arranged and installed along this direction according to certain rules to achieve normal operation and power transmission of the motor.

[0108] The cooler 20, oil pump 30 and filter 50 in the cooling and lubrication module 100 are installed and fixed on the support 10 in an orderly manner along the axial direction of the motor box 201. This layout allows the key components of the cooling and lubrication module 100 to be arranged linearly in space, and cooperates with the axial structure of the motor box 201 to construct a compact spatial layout. Through the connection of the support 10, the cooler 20, the oil pump 30 and the filter 50 form a whole with the motor box 201, and the lubricating oil can circulate between the electric drive assembly 200 and the cooling and lubrication module 100 to achieve the lubrication and cooling functions of the various components in the motor box 201. The key cooling and lubrication components are coaxially integrated and can be assembled independently. Compared with the separate layout design, the space utilization rate is high and the assembly convenience is good.

[0109] The present application provides a method for controlling a vehicle. Figures 1 to 7 , applied to automobiles, the automobile includes a cooling and lubricating module 100, the cooling and lubricating module 100 is applied to the electric drive assembly 200 of the automobile, the cooling and lubricating module 100 includes a support 10, a cooler 20 and an oil pump 30; the support 10 is provided with an oil circuit 1, the oil circuit 1 is used to conduct the lubricating oil in the electric drive assembly 200; the cooler 20 is provided on the support 10; the oil pump 30 is provided on the support 10 and connected to the oil circuit 1, the oil pump 30 is used to pump the lubricating oil in the oil circuit 1; the cooling and lubricating module 100 includes a control Valve 40, the oil circuit 1 includes a main channel 11, a first sub-channel 12, and a second sub-channel 13. Both ends of the first sub-channel 12 and the second sub-channel 13 are connected to the main channel 11, so that the first sub-channel 12 and the second sub-channel 13 are arranged in parallel. The control valve 40 is used to selectively open or close the first sub-channel 12 and the second sub-channel 13. The cooler 20 is connected to the first sub-channel 12 and can cool the lubricating oil flowing through the first sub-channel 12. When the car is in the driving state, please refer to Figure 8 , the control method includes the following steps S101 to S103:

[0110] Step S101 : obtaining the temperature of the lubricating oil entering the main channel 11 .

[0111] The system obtains the temperature of the lubricating oil entering the main channel 11, which is the starting point of the entire control process and provides data support for subsequent decision-making.

[0112] In step S102 , if the temperature of the lubricating oil entering the main channel 11 is greater than the set temperature, the control valve 40 opens the first sub-channel 12 and disconnects the second sub-channel 13 , and the cooler 20 cools the lubricating oil flowing through the first sub-channel 12 .

[0113] The set temperature minus the preset judgment threshold serves as the basis for the control valve 40 to switch the lubricating oil flow path, and is determined according to the working requirements of the electric drive assembly 200 and the lubricating oil performance.

[0114] When the lubricating oil temperature is detected to be greater than the set temperature, it means that the lubricating oil needs to be cooled to maintain the normal operation of the electric drive assembly 200. At this time, the control valve 40 is activated, connecting the first sub-channel 12 and disconnecting the second sub-channel 13. This allows the lubricating oil to flow from the main channel 11 into the first sub-channel 12, pass through the cooler 20 connected to the first sub-channel 12, be cooled through heat exchange, and then flow back to the main channel 11 to continue to provide lubrication and cooling for the electric drive assembly 200.

[0115] In step S103 , if the temperature of the lubricating oil entering the main channel 11 is less than or equal to the set temperature, the control valve 40 connects the second sub-channel 13 and disconnects the first sub-channel 12 .

[0116] If the lubricating oil temperature is less than or equal to the set temperature, it means that the current lubricating oil temperature is appropriate and no cooling is required. The control valve 40 will connect the second sub-channel 13 and disconnect the first sub-channel 12. The lubricating oil does not pass through the cooler 20 and flows directly back to the main channel 11 through the second sub-channel 13 to complete the circulation, avoiding unnecessary cooling process and saving energy.

[0117] For example, the oil temperature detected in the main channel 11 is recorded as T1, and the preset temperature is recorded as T2. After the lubricating oil enters the control valve 40, if the oil temperature T1 entering the main channel 11 is lower than the preset temperature T2, the second control outlet 43 is normally closed, and the lubricating oil flows out through the first control outlet 42. After the lubricating oil enters the control valve 40, if the oil temperature T1 entering the main channel 11 is higher than the preset temperature T2, the oil circuit control valve 40 is opened, the first control outlet 42 is normally closed, and the lubricating oil flows out through the second control outlet 43.

[0118] When the cooling and lubrication module 100 starts working, that is, the oil pump 30 starts pumping oil, the lubricating oil stored between the motor box 201 and the oil pan passes through the third interface 2011, enters the first oil channel 111, passes through the first oil storage chamber 117, and enters the oil inlet of the oil pump 30. Under the action of the oil pump 30, the lubricating oil flows out from the oil outlet of the oil pump 30, passes through the second oil storage chamber 118, and then passes through the second oil channel 112 and the third oil channel 113 in turn to enter the third oil storage chamber 119. When the third oil storage chamber 119 is full of lubricating oil, it enters the filter inlet 51. Under the action of the filter 50, the lubricating oil flows out from the filter outlet 52, enters the fourth oil channel 114, flows through the first oil channel 111, and thus enters the inlet of the oil circuit control valve 40.

[0119] When the oil temperature T1 entering the main channel 11 is lower than the preset temperature T2, the lubricating oil flows out from the first control outlet 42, passes through the seventh oil channel 131 and the eighth oil channel 132, and then merges into the tenth oil channel 116, thereby entering the fourth interface 2014 and reaching the main oil channel to participate in flow distribution.

[0120] See also Figure 2 When the oil temperature T1 entering the main channel 11 is higher than the preset temperature T2, the control valve 40 is turned on, the second control outlet 43 opens, and the lubricating oil flows through the fifth port 16 and into the seventh port 21 of the cooler 20. After the cooler 20 operates, the lubricating oil flows out of the eighth port 22 of the cooler 20, flows through the sixth port 17, and merges into the tenth oil channel 116. From there, the oil enters the fourth port 2014 and reaches the main oil channel for flow distribution. Based on the flow distribution, the oil is supplied to the stator 204 and rotor 205 of the distributed electric drive motor, as well as the gears 206 of the reducer, providing cooling and lubrication, before ultimately returning to the oil tank 203.

[0121] In order to ensure that the internal working oil temperature of the distributed electric drive is always within an economic range with the highest electric drive efficiency, when the oil temperature T1 entering the main oil channel is lower than the preset temperature T2, the oil supplied by the oil pump 30 can enter the main channel 11 without being cooled by the cooler 20; when the oil temperature T1 entering the main channel 11 is higher than the preset temperature T2, the oil supplied by the oil pump 30 needs to pass through the cooler 20 before entering the main channel 11.

[0122] Combined with the above-mentioned oil temperature control method, the overall cooling and lubricating oil circuit process is: the oil pump 30 pumps oil from the oil tank 203 at the bottom of the electric drive assembly 200 to the filter 50, and the lubricating oil output from the filter 50 enters the control valve 40. According to the oil temperature control method provided by the present invention, it is selected to pass through the cooler 20, exchange heat with the coolant in the cooling channel, and then flow out to the main channel 11; or the lubricating oil does not pass through the cooler 20 to reduce energy loss.

[0123] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A cooling and lubrication module, characterized in that: The cooling and lubrication module is applied to the electric drive assembly of an automobile, and the cooling and lubrication module includes: A support, wherein the support is provided with an oil circuit, and the oil circuit is used to conduct lubricating oil in the electric drive assembly; a cooler, the cooler being disposed on the support and capable of cooling the lubricating oil flowing through the oil circuit; An oil pump is arranged on the support and connected to the oil circuit. The oil pump is used to pump the lubricating oil in the oil circuit.

2. The cooling and lubrication module according to claim 1, characterized in that: The cooling and lubrication module includes a control valve, and the oil circuit includes a main channel, a first sub-channel, and a second sub-channel. Both ends of the first sub-channel and both ends of the second sub-channel are connected to the main channel, so that the first sub-channel and the second sub-channel are arranged in parallel. The control valve is used to selectively open or disconnect the first sub-channel and the second sub-channel. The cooler is connected to the first sub-channel, and the cooler can cool the lubricating oil flowing through the first sub-channel.

3. The cooling and lubrication module according to claim 1, characterized in that: The support includes a first interface and a second interface respectively arranged at both ends of the oil circuit. The electric drive assembly includes a main oil channel and a third interface and a fourth interface both connected to the main oil channel. The first interface is connected to the third interface, and the second interface is connected to the fourth interface.

4. The cooling and lubrication module according to claim 1, characterized in that: The support includes a fifth interface and a sixth interface both connected to the oil circuit. The cooler is provided with a seventh interface and an eighth interface. The fifth interface is connected to the seventh interface, and the sixth interface is connected to the eighth interface.

5. The cooling and lubrication module according to claim 4, characterized in that: A cooling channel is provided in the cooler, and the cooling channel is used to conduct the coolant of the automobile and perform heat exchange with the lubricating oil flowing through the cooler.

6. The cooling and lubrication module according to claim 5, characterized in that: The cooler is provided with a ninth interface connected to the cooling channel, the support is provided with a connecting channel, and the motor box of the electric drive assembly is provided with a tenth interface, and the ninth interface is connected to the tenth interface through the connecting channel.

7. The cooling and lubrication module according to any one of claims 1 to 6, characterized in that: The cooling and lubrication module includes a filter, which is connected to the oil circuit and is used to filter the lubricating oil flowing through the filter.

8. The cooling and lubrication module according to claim 7, characterized in that: The electric drive assembly includes a motor case, and the cooler, the oil pump, and the filter are arranged on the support along the axial direction of the motor case.

9. An automobile, characterized in that: include: The cooling and lubrication module according to any one of claims 1 to 8; The electric drive assembly includes a main oil channel, and the oil circuit is connected to the main oil channel.

10. A method for controlling an automobile, characterized in that: Applied to an automobile, the automobile includes a cooling and lubrication module, the cooling and lubrication module is applied to the electric drive assembly of the automobile, the cooling and lubrication module includes a support, a cooler and an oil pump; the support is provided with an oil circuit, the oil circuit is used to conduct the lubricating oil in the electric drive assembly; the cooler is arranged on the support; the oil pump is arranged on the support and connected to the oil circuit, the oil pump is used to pump the lubricating oil in the oil circuit; the cooling and lubrication module includes a control valve, the oil circuit includes a main channel, a first sub-channel and a second sub-channel, both ends of the first sub-channel and both ends of the second sub-channel are connected to the main channel, so that the first sub-channel and the second sub-channel are arranged in parallel, the control valve is used to selectively open or disconnect the first sub-channel and the second sub-channel, the cooler is connected to the first sub-channel, and the cooler can cool the lubricating oil flowing through the first sub-channel; The car is in a driving state, and the control method includes: obtaining the temperature of the lubricating oil entering the main channel; If the temperature of the lubricating oil entering the main channel is greater than a set temperature, the control valve opens the first sub-channel and disconnects the second sub-channel, and the cooler cools the lubricating oil flowing through the first sub-channel; If the temperature of the lubricating oil entering the main channel is less than or equal to a set temperature, the control valve opens the second sub-channel and opens the first sub-channel.

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