Transmission device, driving device and vehicle

Abstract

The utility model discloses a transmission device, a driving device and a vehicle, the transmission device comprises a transmission mechanism and a shell, a first partition plate is arranged in the shell, the shell is divided into a first cavity and a second cavity by the first partition plate, the transmission mechanism is arranged in the first cavity and the second cavity, and the transmission mechanism is arranged in the second cavity. The first cavity and the second cavity are used for containing a liquid medium, and a first hole allowing the liquid medium to circulate is formed in the first partition plate. Therefore, the liquid level in the first cavity and the liquid level in the second cavity are balanced through the first hole, so that insufficient lubrication or cooling of a transmission mechanism caused by large-area accumulation of a liquid medium on one side during dynamic operation of the transmission device is avoided.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a transmission device, a drive device and a vehicle. Background Art

[0002] In the related art, when the drive device is in dynamic operation, the oil in the housing of the drive device will accumulate on one side due to inertia, thereby causing the lubrication and cooling effects of the transmission mechanism on the other side of the housing to deteriorate. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a transmission device, which can prevent oil from accumulating in a housing and can prevent the oil from forming turbulence in the housing.

[0004] The application also proposes a driving device.

[0005] The application also proposes a vehicle.

[0006] The transmission device according to the first aspect of the present application includes: a transmission mechanism; a shell, a first partition is provided in the shell, the first partition divides the shell into a first cavity and a second cavity, the transmission mechanism is provided in the first cavity and the second cavity, the first cavity and the second cavity are used to accommodate liquid medium, and the first partition is provided with a first hole for the liquid medium to flow.

[0007] Thus, the liquid levels in the first cavity and the second cavity are balanced through the first hole, thereby preventing the liquid medium from accumulating on one side over a large area during dynamic operation of the transmission device, resulting in insufficient lubrication or cooling of the transmission mechanism.

[0008] In some embodiments of the present application, the transmission mechanism has an input shaft and an output shaft, the input shaft is suitable for connecting to a power source, and the input shaft is coaxially arranged with the output shaft.

[0009] In some embodiments of the present application, the transmission mechanism includes: a first transmission component, the first transmission component is arranged in the first cavity, and the first transmission component is dynamically connected to the output shaft; a second transmission component, the second transmission component is arranged in the second cavity, and the second transmission component is dynamically connected to the input shaft.

[0010] In some embodiments of the present application, the second transmission assembly includes: a first transmission gear, the first transmission gear is connected to the input shaft; a second transmission gear, the second transmission gear is meshed with the first transmission gear, and the center axis of the second transmission gear is eccentrically arranged relative to the output shaft, and the second transmission gear is connected to the first transmission assembly.

[0011] In some embodiments of the present application, the second transmission component is disposed above the liquid surface of the liquid medium, and the first transmission component is partially immersed in the liquid medium.

[0012] In some embodiments of the present application, the first transmission assembly includes: a third transmission gear, the third transmission gear is dynamically connected to the second transmission gear; and a differential, the differential is dynamically connected to the third transmission gear and the output shaft, respectively.

[0013] In some embodiments of the present application, the transmission mechanism is installed on the first partition.

[0014] According to the driving device of the embodiment of the second aspect of the present application, the driving device includes a power source and the above-mentioned transmission device; the shell also has a third chamber, the power source is arranged in the third chamber, the third chamber is formed on the side of the second chamber away from the first chamber, the third chamber and the second chamber are separated by a second partition, and the second partition is provided with a second hole for the circulation of liquid medium.

[0015] In some embodiments of the present application, the height position of the first hole is lower than the height position of the second hole.

[0016] In some embodiments of the present application, the power source is installed on the second partition.

[0017] In some embodiments of the present application, the driving device further includes a pump assembly, and the pump assembly is used to transport the liquid medium to the transmission mechanism.

[0018] In some embodiments of the present application, the liquid suction position of the pump assembly is arranged in the second chamber and / or the third chamber.

[0019] In some embodiments of the present application, the first hole is spaced apart from the bottom wall of the first cavity in the vertical direction, and the liquid suction position of the pump assembly is arranged in the first cavity.

[0020] In some embodiments of the present application, the liquid level of the liquid medium is higher than the lower edge of the second hole.

[0021] A vehicle according to an embodiment of the third aspect of the present application includes the above-mentioned drive device.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a schematic diagram of a driving device according to an embodiment of the present application;

[0025] Figure 2 is a schematic diagram of a vehicle according to an embodiment of the present application.

[0026] Reference numerals:

[0027] Vehicles 1000;

[0028] Driving device 100; Transmission device 10; Liquid medium 20;

[0029] Shell 1; first cavity 101; second cavity 102; third cavity 103; first partition 11; first hole 111; second partition 12; second hole 121;

[0030] Transmission mechanism 2; output shaft 201; first output shaft 2011; second output shaft 2012; first transmission assembly 21; third transmission gear 211; differential 212; fourth transmission gear 2121; second transmission assembly 22; first transmission gear 221; second transmission gear 222; countershaft 23;

[0031] Power source 3; input shaft 31. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0033] Reference below Figure 1 The transmission device 10 according to the embodiment of the present application is described. The transmission device 10 in the present application can be applied to a drive device 10, and the transmission device 10 can be connected to the power source 3 to achieve power output.

[0034] Reference Figure 1 The transmission device 10 includes a shell 1 and a transmission mechanism 2. A first partition 11 is arranged in the shell 1. The first partition 11 divides the shell 1 into a first cavity 101 and a second cavity 102. The transmission mechanism 2 is arranged in the first cavity 101 and the second cavity 102. The first cavity 101 and the second cavity 102 are used to accommodate a liquid medium 20. The first partition 11 is provided with a first hole 111 for the liquid medium to flow between the first cavity 101 and the second cavity 102.

[0035] The first cavity 101 and the second cavity 102 are both provided with a liquid medium 20 , and the liquid medium 20 can be used to lubricate and cool the transmission mechanism 2 arranged in the first cavity 101 and the second cavity 102 .

[0036] It should be noted that in the related art, when the drive device is in dynamic operation, the oil in the drive device housing will accumulate to one side due to inertia, causing the transmission mechanism on the other side of the housing to be unable to effectively contact the oil, resulting in poor lubrication and cooling effects.

[0037] In the present application, the first cavity 101 and the second cavity 102 formed by the shell 1 are connected by the first hole 111, which can prevent the liquid medium 20 from accumulating on one side of the first cavity 101 or the second cavity 102 over a large area during dynamic operation of the driving device, thereby preventing the problem of insufficient lubrication or insufficient cooling from occurring.

[0038] It should be noted that the first cavity 101 may be a cavity in the drive device 100 that accommodates the transmission mechanism 2, and the second cavity 102 may be a cavity in the drive device 100 that accommodates the power source 3; when the drive device 100 of this embodiment is applied to a vehicle, the power source 3 may be a motor, and the power output by the power source 3 is transmitted to the transmission mechanism 2, and then transmitted to the wheels by the transmission mechanism 2. The first cavity 101 and the second cavity 102 may also both be cavities that accommodate the transmission mechanism 2, and the transmission mechanism 2 may be divided into a multi-stage transmission assembly arranged in the axial direction, with some of the transmission assemblies accommodated in the first cavity 101 and some of the transmission assemblies accommodated in the second cavity 102.

[0039] In the present application, the first cavity 101 and the second cavity 102 are connected through the first hole 111, and the liquid medium 20 in the first cavity 101 can flow into the second cavity 102 through the first hole 111, and the liquid medium 20 in the second cavity 102 can also flow into the first cavity 101 through the first hole 111. The first partition 11 can block the liquid medium 20, thereby slowing down the inflow speed of the liquid medium 20 flowing into the other cavity, so as to prevent the liquid medium 20 in the housing 1 from accumulating into one of the cavities (the first cavity 101 or the second cavity 102).

[0040] like Figure 1 As shown, in some embodiments of the present application, the transmission mechanism 2 has an input shaft 31 and an output shaft 201, and the input shaft 31 is connected to the power source 3, and the input shaft 31 and the output shaft 201 are arranged coaxially. The power source 3 can transmit power to the transmission mechanism 2 through the input shaft 31, and the power is outputted through the output shaft 201 after being transmitted through the transmission mechanism 2.

[0041] like Figure 1As shown, in some embodiments of the present application, the transmission mechanism 2 includes: a first transmission assembly 21 and a second transmission assembly 22. The first transmission assembly 21 is arranged in the first cavity 101, and the first transmission assembly 21 is connected to the output shaft 201 by power, and the second transmission assembly 22 is arranged in the second cavity 102, and the second transmission assembly 22 is connected to the first transmission assembly 21 and the power source 3 by power, respectively.

[0042] At this time, the transmission mechanism 2 is arranged in the first cavity 101 and the second cavity 102 at the same time, and the transmission components located in the first cavity 101 and the second cavity 102 can be lubricated and cooled by the liquid medium 20 to ensure the operation stability and reliability of the transmission mechanism 2.

[0043] Reference Figure 1 After the power source 3 outputs power, the power can be transmitted to the second transmission component 22, and further transmitted to the first transmission component 21 side through the second transmission component 22 to drive the first transmission component 21 to operate, and finally transmitted to the output shaft 201 by the first transmission component 21, and the power is output through the output shaft 201.

[0044] Reference Figure 1 , the input shaft 31 is loosely sleeved on the output shaft 201. It should be noted that when the drive device 100 is provided with multiple output shafts 201, the input shaft 31 can be loosely sleeved on one of the output shafts 201. It can be understood that since the first cavity 101, the second cavity 102 and the third cavity 103 arranged in sequence along the axial direction are formed in the housing 1, and the first transmission assembly 21 connected to the power of the output shaft 201 is arranged in the first cavity 101, it is necessary to set the second transmission assembly 22 connected to the power between the first transmission assembly 21 and the power source 3 in the second cavity 102 to meet the power transmission requirements and realize the drive device 100 outputting power through the output shaft 201.

[0045] like Figure 1 As shown, in some embodiments of the present application, the second transmission assembly 22 includes: a first transmission gear 221 and a second transmission gear 222, the first transmission gear 221 is connected to the input shaft 31, the second transmission gear 222 is meshed with the first transmission gear 221, and the center axis of the second transmission gear 222 is eccentrically arranged relative to the output shaft 201, and the second transmission gear 222 is connected to the first transmission assembly 21.

[0046] The first transmission gear 221 can be driven to rotate synchronously by the input shaft 31, and the power is transmitted to the second transmission gear 222 through the meshing cooperation between the first transmission gear 221 and the second transmission gear 222. At the same time, the central axis of the second transmission gear 222 is eccentrically arranged relative to the output shaft 201, so that the second transmission gear 222 is arranged in an area suitable for power connection with the first transmission assembly 21, that is, a position avoiding the output shaft 201.

[0047] like Figure 1 As shown, in some embodiments of the present application, the second transmission assembly 22 is arranged above the liquid surface of the liquid medium 20, that is, the first transmission gear 221 and the second transmission gear 222 are both arranged above the liquid surface of the liquid medium 20, thereby preventing the second transmission assembly 22 from being immersed in the liquid medium 20 and stirring the oil, reducing energy loss during power transmission, and ensuring the power transmission effect of the transmission mechanism 2.

[0048] It is understandable that, taking the second transmission gear 222 as an example, if part of the second transmission gear 222 is immersed in the liquid medium 20, when the first transmission gear 221 drives the second transmission gear 222 to rotate, the second transmission gear 222 will stir the liquid medium 20, thereby causing the driving device 100 to generate oil stirring energy loss.

[0049] The present application can reduce unnecessary oil stirring loss of the driving device 100 during operation by setting the second transmission component 22 above the liquid surface of the liquid medium 20. At the same time, when a pump component is also provided in the driving device 100, the liquid medium 20 can be transported to the components (such as the transmission mechanism 2) that need lubrication and cooling through the pump component. Since the second transmission component 22 arranged in the second cavity 102 is higher than the liquid surface of the liquid medium 20, the liquid medium 20 in the second cavity 102 is not agitated by the second transmission component 22, and the suction position of the pump component can be set in the second cavity 102 to ensure the effect of the pump component in extracting the liquid medium 20 in the housing 1.

[0050] It should be noted that the above-mentioned “liquid surface” refers to the liquid surface of the liquid medium 20 when it is in a static state.

[0051] like Figure 1 As shown, the first transmission component 21 is partially immersed in the liquid medium 20. The liquid medium 20 can be stirred and brought to the first transmission component 21 through the portion of the first transmission component 21 immersed in the liquid medium 20, thereby improving the lubrication and cooling effects of various components in the first transmission component 21.

[0052] In some embodiments of the present application, the first transmission assembly 21 includes: a third transmission gear 211 and a differential 212, the third transmission gear 211 is power-connected to the second transmission gear 222, and the differential 212 is power-connected to the third transmission gear 211 and the output shaft 201. The differential 212 is a component used to bear the differential speed of the left and right wheels or the front and rear wheels in the vehicle 1000.

[0053] The second transmission assembly 22 transmits power to the third transmission gear 211 , and further transmits power to the differential 212 through the third transmission gear 211 .

[0054] Specifically, the differential 212 is provided with a fourth transmission gear 2121, the third transmission gear 2111 and the second transmission gear 222 are coaxially arranged, and the second transmission gear 222 and the third transmission gear 2111 are connected through the countershaft 23, so that the third transmission gear 2111 is driven to rotate synchronously through the second transmission gear 222. The third transmission gear 2111 and the fourth transmission gear 2121 are meshed and matched, so that the fourth transmission gear 2121 is driven to rotate through the third transmission gear 2111, so as to further transmit power to the differential 212.

[0055] In some embodiments of the present application, the driving device 100 further includes a transmission mechanism 2 and a power source 3 .

[0056] Among them, a liquid medium 20 may be provided in the housing 1, and the liquid medium 20 may be used to cool and lubricate the transmission mechanism 2 to ensure the operational stability and reliability of the drive device 100. The "liquid medium 20" may be an oil medium with lubricity, and the type of the liquid medium 20 is not specifically limited here, as long as it can achieve lubrication and cooling of the transmission mechanism 2.

[0057] At the same time, the shell 1 also has a third chamber 103, and the power source 3 is arranged in the third chamber 103. The third chamber 103 is formed on the side of the second chamber 102 away from the first chamber 101. The third chamber 103 and the second chamber 102 are separated by a second partition 12, and the second partition 12 is provided with a second hole 121 for the liquid medium 20 to flow.

[0058] Reference Figure 1 The first cavity 101, the second cavity 102 and the third cavity 103 are sequentially arranged along the axial direction of the driving device 100. The first cavity 101 is connected to the second cavity 102 through the first hole 111, and the second cavity 102 is connected to the third cavity 103 through the second hole 121.

[0059] It should be noted that, currently, the drive device arranges the transmission mechanism and the power source in the same cavity space, which causes the power source to be contaminated by the oil in the cavity. In the present application, the housing 1 is divided to form a plurality of cavities (i.e., the first cavity 101, the second cavity 102, and the third cavity 103), and the power source 3 and the transmission mechanism 2 are arranged in different cavities, such as: the transmission mechanism 2 is arranged in the first cavity 101 and the second cavity 102, the power source 3 is arranged in the third cavity 103, and the power source 3 is connected to the transmission mechanism 2 in power so as to transmit power to the output shaft 201 through the transmission mechanism 2.

[0060] Reference Figure 1 The first cavity 101 and the second cavity 102 are connected through the first hole 111, and the liquid medium 20 in the first cavity 101 can flow out or flow in through the first hole 111, that is, flow out from the first cavity 101 to the second cavity 102 or flow from the second cavity 102 to the first cavity 101; the second cavity 102 and the third cavity 103 are connected through the second balancing cavity, and the liquid medium 20 in the second cavity 102 can flow out or flow in through the second hole 121, that is, flow out from the second cavity 102 to the third cavity 103 or flow from the third cavity 103 to the second cavity 102. Thus, it is ensured that the driving liquid in the housing 1 is in a balanced state.

[0061] When the drive device 100 is in dynamic operation, the liquid medium 20 flows in the housing 1 under the action of inertia. Taking the drive device 100 applied to the vehicle 1000 as an example, "dynamic operation" means that the drive device 100 operates under the driving condition of the vehicle 1000.

[0062] It is understandable that when the vehicle 1000 is in an acceleration or deceleration state, the liquid medium 20 will accumulate on one side of the housing 1. Figure 1 When the liquid medium 20 accumulates toward the side where the power source 3 is provided, the liquid medium 20 in the first chamber 101 can flow into the second chamber 102 through the first hole 111, and the liquid medium 20 in the second chamber 102 can flow into the third chamber 103 through the second hole 121. At this time, the liquid medium 20 in the first chamber 101 and the second chamber 102 will be reduced.

[0063] It should be noted that the above-mentioned "acceleration or deceleration state" may be the lateral acceleration or deceleration of the vehicle 1000. When the vehicle 1000 is in the lateral acceleration or deceleration, the liquid medium 20 will accumulate on one side of the housing 1. Since the output shaft 201 of the driving device 100 is arranged parallel to the line between the front wheels, when the vehicle is traveling in a straight line, acceleration or deceleration will not cause the liquid medium 20 to accumulate in a chamber on one side of the housing 1 along the axial direction. In other words, only when the vehicle 1000 tilts sideways will the liquid medium 20 accumulate on one side of the first chamber 101 or the third chamber 103.

[0064] like Figure 1 As shown, in some embodiments of the present application, the height position of the first hole 111 is lower than the height position of the second hole 121, and the first hole 111 and the second hole 121 are both used for allowing the liquid medium 20 to pass through, so that the liquid medium 20 in two adjacent cavities is in a balanced state, so that a certain amount of liquid medium 20 can be stored in each cavity.

[0065] In the present application, only when the liquid level of the liquid medium 20 in the first cavity 101 can reach the height of the first hole 111, can the liquid medium 20 flow from the first cavity 101 into the second cavity 102; only when the liquid level of the liquid medium 20 in the second cavity 102 can reach the height of the second hole 121, can the liquid medium 20 flow from the second cavity 102 into the third cavity 103.

[0066] Since the height position of the first hole 111 is lower than that of the second hole 121, it is more difficult for the liquid medium 20 to enter the third cavity 103 from the second cavity 102 than for the liquid medium 20 to enter the second cavity 102 from the first cavity 101, thereby reducing the amount of liquid medium entering the third cavity 103, so that a certain amount of liquid medium 20 can be left in the second cavity 102 to ensure the lubrication and cooling effect of the transmission mechanism 2. Similarly, when the first hole 111 is spaced apart from the bottom wall of the first cavity 101, a certain amount of liquid medium 20 can also be left in the first cavity 101.

[0067] Among them, the volume of liquid medium 20 retained in the cavity can be designed according to parameters such as the size of the shell 1, the setting position of the balance holes (i.e., the first hole 111 and the second hole 121), the dynamic operating state of the drive device 100, etc., and no specific limitation is made here.

[0068] It should be noted that, in the driving device 100, there are multiple ways to transport the liquid medium 20 to the transmission mechanism 2. Taking the device for transporting the liquid medium 20 as a pump assembly as an example, the liquid medium suction position of the pump assembly is located in the shell 1. Since the position height of the second hole 121 is higher than the position height of the first hole 111, it can be ensured that a certain amount of liquid medium 20 can always be retained in the second cavity 102, thereby avoiding the problem of the liquid medium 20 being sucked out when the suction position of the pump structure is set in the second cavity 102.

[0069] At the same time, since the first hole 111 is arranged lower than the second hole 121 , when the vehicle 1000 switches from an acceleration or deceleration condition to a more stable condition (such as constant speed driving), the liquid medium 20 in the second chamber 102 can be quickly replenished to the first chamber 101 side.

[0070] Furthermore, after the driving device 100 is used for a period of time, impurities will be generated in the driving device 100, and the impurities are usually deposited at the bottom of the housing 1, that is, the bottom area of ​​the liquid medium 20. Since the second chamber 102 and the third chamber 103 in the present application are connected through the second hole 121, and the second hole 121 is located at a higher position, it is possible to increase the difficulty of impurities entering the third chamber 103 through the second hole 121, reduce the amount of impurities in the third chamber 103, reduce the risk of the power source 3 being contaminated by impurities, and ensure the operational reliability and stability of the power source 3.

[0071] It is understandable that solid impurities (such as oil sludge or iron filings) in the driving device 100 usually exist in the form of precipitation and aggregation, and are formed at the bottom of the housing 1. If the impurities come into contact with the power source 3, the risk of contaminating the power source 3 will increase, thereby causing the risk of damage to the power source 3.

[0072] In the present application, the power source 3 is arranged in the third chamber 103, and the third chamber 103 is connected to the second chamber 102 through the second hole 121, so that impurities can be blocked from entering the third chamber 103 by the partition structure (such as: wall, etc.) between the second chamber 102 and the third chamber 103, thereby reducing the risk of the power source 3 being damaged by contamination by impurities.

[0073] In some embodiments of the present application, the power source 3 is coaxially arranged with the output shaft 201, so that the internal components of the drive device 100 are compactly arranged and space-saving. The power source 3 can be configured as a drive motor, and the drive motor has an input shaft 31, which is used to input power to the transmission mechanism 2.

[0074] In some embodiments of the present application, the output shaft 201 includes a first output shaft 2011 and a second output shaft 2012, the first output shaft 2011 and the second output shaft 2012 are respectively connected to the differential 212, and the first output shaft 2011 and the second output shaft 2012 are coaxially arranged, and the input shaft 31 is sleeved on one of the first output shaft 2011 and the second output shaft 2012.

[0075] Reference Figure 1 The first output shaft 2011 extends from the first cavity 101 through the shell 1, the second output shaft 2012 extends from the first cavity 101 through the second cavity 102 and the third cavity 103 in sequence and then extends from the shell 1, and the input shaft 31 is sleeved on the second output shaft 2012.

[0076] In some embodiments of the present application, the drive device 100 also includes a pump assembly, which is disposed in the housing 1 and is used to transport the liquid medium 20 to the transmission mechanism 2 so that the liquid medium 20 can contact the transmission mechanism 2 to lubricate and cool the transmission mechanism 2.

[0077] Among them, the pump component can be constructed as an electric or mechanical oil pump, which can extract the liquid medium 20 in the shell 1 and transport it to the parts of the shell 1 that need cooling and lubrication. The specific structure and layout position of the pump component are not specifically limited here. The transmission mechanism 2 and the power source 3 can be avoided and not interfered with, and the extraction and transportation of the liquid medium 20 can be achieved.

[0078] In a further embodiment of the present application, the suction position of the pump assembly is set in at least one of the second cavity 102 and the third cavity 103. It can be understood that the pump assembly lubricates and cools the transmission mechanism 2 by extracting and delivering the liquid medium 20 in the housing 1. In the second cavity 102 and the third cavity 103, no matter what working condition the drive device 100 is in (such as static state, dynamic operation, etc.), a certain amount of liquid medium 20 can be stored in the second cavity 102 and the third cavity 103, which can prevent the liquid medium 20 in the cavity from being sucked out, and ensure the suction effect of the pump assembly.

[0079] In some embodiments of the present application, the first hole 111 is spaced apart from the bottom wall of the first cavity 101 in the vertical direction. When the driving device 100 is in dynamic operation, the liquid medium 20 has a tendency to accumulate toward one side of the housing 1. Since the first hole 111 is spaced apart from the bottom wall of the first cavity 101, even if the liquid medium 20 flows out from the first cavity 101 to the second cavity 102, a certain amount of liquid medium 20 can be left in the first cavity 101. Thus, the liquid suction position of the pump assembly can be set in the first cavity 101 to ensure the liquid suction effect of the pump assembly in the first cavity 101 and prevent the liquid medium 20 in the first cavity 101 from being sucked out.

[0080] like Figure 1 As shown, in some embodiments of the present application, a first partition plate 11 and a second partition plate 12 are provided in the shell 1, the first partition plate 11 and the second partition plate 12 are spaced apart in the axial direction, and a first hole 111 is formed on the first partition plate 11, and a second hole 121 is formed on the second partition plate 12.

[0081] The space in the shell 1 is divided by a first partition 11 and a second partition 12 to form a first cavity 101, a second cavity 102 and a third cavity 103 arranged in sequence along the axial direction, and the two connected cavities are connected through a hole structure.

[0082] Reference Figure 1 A third chamber 103 for arranging the power source 3 is formed in the shell 1 by the second partition 12, and the space on the side of the second partition 12 away from the third chamber 103 is further divided by the first partition 11 to form a first chamber 101 and a second chamber 102, thereby dividing the space in the shell 1 into three parts (i.e., the first chamber 101, the second chamber 102 and the third chamber 103).

[0083] It can be understood that a differential 212 is provided in the drive device 100, and the differential bearing in the differential 212 needs to be arranged in the housing 1. By setting the first partition 11, a mounting point can be provided for the differential 212 in the housing 1, and the space can be divided into two parts to prevent the liquid medium 20 from being sucked out by the pump assembly.

[0084] In some embodiments of the present application, the transmission mechanism 2 is mounted on the first partition 11. The transmission mechanism 2 includes a differential 212, and the first partition 11 can provide a mounting point for the differential 212 so that the differential 212 can be detachably mounted on the first partition 11. Of course, the differential 212 can also be fixed on the first partition 11, and the assembly method of the differential 212 and the first partition 11 is not specifically limited herein. The first partition 11 can be a bearing seat, and one end of the differential 212 is supported on the first partition 11 by a bearing, and the other end of the differential 212 is supported on the housing 1 that encloses the first cavity 101 by a bearing.

[0085] In some embodiments of the present application, the power source 3 is mounted on the second partition 12. The second partition 12 can provide a mounting point for the power source 3 to fix the power source 3 on the housing 1. The second partition 12 can be integrally formed with the housing 1, and a through hole for the input shaft 31 to pass through is provided thereon, one end of the input shaft 31 is supported in the through hole by a bearing, and the other end of the input shaft 31 is supported on the housing 1 that encloses the third cavity 103 by a bearing, so that the transmission mechanism 2 can be connected to the power source 3 through the input shaft 31.

[0086] Preferably, when the suction position of the pump assembly is arranged in the second chamber 102 or the third chamber 103, the suction position of the pump assembly can be arranged at a position adjacent to the second partition 12 in the second chamber 102 or the third chamber 103, so as to ensure the pump assembly's extraction effect on the liquid medium 20. When the suction position of the pump assembly is arranged in the first chamber 101, the suction position of the pump assembly can be arranged at a position adjacent to the first partition 11 in the first chamber 101, or arranged at a lower height area, so as to ensure the pump assembly's extraction effect on the liquid medium 20 in the first chamber 101.

[0087] like Figure 1 As shown, in some embodiments of the present application, part of the transmission mechanism 2 is arranged below the liquid level of the liquid medium 20, and the transmission mechanism 2 can be used to stir the liquid medium 20, so that the transmission mechanism 2 is brought into contact with the liquid medium 20 by stirring the oil, thereby achieving lubrication and cooling of the transmission mechanism 2.

[0088] It should be noted that the above-mentioned “liquid surface” refers to the liquid surface of the liquid medium 20 when it is in a static state.

[0089] In a specific embodiment of the present application, when the driving device 100 is in a stable state, part of the first transmission component 21 located in the first chamber 101 extends below the liquid surface of the liquid medium 20, and the second transmission component 22 located in the second chamber 102 is set higher than the liquid surface of the liquid medium 20.

[0090] Specifically, when the power source 3 inputs power to the transmission mechanism 2 through the input shaft 31, the input shaft 31 drives the second transmission component 22, and the second transmission component 22 does not directly contact the liquid medium 20. The second transmission component 22 further drives the first transmission component 21 to move through the secondary shaft 23. The first transmission component 21 can stir the liquid medium 20 during operation, so that the first transmission component 21 can fully contact the liquid medium 20 to achieve lubrication and cooling.

[0091] It can be understood that the liquid medium 20 in the first cavity 101 is in a dynamic state under the stirring of the first transmission component 21, and the liquid medium 20 in the second cavity 102 is less affected by the second transmission component 22 and is close to a static state, that is, a relatively stable state. Therefore, when a pump component is provided in the driving device 100, the suction position of the pump component can be arranged in the second cavity 102 where the liquid medium 20 is relatively stable, thereby effectively avoiding the transmission mechanism 2 or other components from stirring the liquid medium 20 and affecting the pump component extraction, so as to ensure the stability and reliability of the pump component in extracting the liquid medium 20.

[0092] Therefore, the first partition 11 can not only provide an installation point for the transmission mechanism 2, but also separate the space in the shell 1 for arranging the transmission mechanism 2 to form a first cavity 101 and a second cavity 102, providing a relatively stable working environment for the pump assembly to extract the liquid medium 20 (i.e., the above-mentioned second cavity 102).

[0093] like Figure 1 As shown, in some embodiments of the present application, the liquid level of the liquid medium 20 is higher than the lower edge of the second hole 121 , thereby ensuring the circulation effect of the liquid medium 20 in the second chamber 102 and the third chamber 103 .

[0094] Reference Figure 1 When the driving device 100 is in a stationary state, the liquid level of the liquid medium 20 needs to be higher than the lower edge of the second hole 121 to ensure that the liquid medium 20 can flow in the second cavity 102 and the third cavity 103. It can be understood that if the liquid level of the liquid medium 20 is lower than the second hole 121, the liquid medium 20 in the second cavity 102 and the third cavity 103 are independent of each other, so that the oil cannot be quickly replenished when the driving device 100 is in dynamic operation, which leads to excessive turbulence in the dynamic process of the oil in the housing 1.

[0095] In summary, the driving device 100 according to the embodiment of the present application has at least the following advantages:

[0096] In the present application, the first partition 11 is installed in the housing 1 and forms a first cavity 101 in which the differential 212 is arranged. The second partition 12 is installed in the housing 1 and forms a third cavity 103 in which the power source 3 (such as a drive motor) is arranged. Thus, the space in the housing 1 is divided into a first cavity 101, a second cavity 102 and a third cavity 103 arranged in the axial direction by the first partition 11 and the second partition 12, and the first cavity 101 and the second cavity 102 are connected through the first hole 111, and the second cavity 102 and the third cavity 103 are connected through the second hole 121. The first hole 111 and the second hole 121 are used to balance the liquid level in each cavity, so as to avoid the accumulation of a large area of ​​the liquid medium 20 on one side during the dynamic operation of the drive device 100, resulting in insufficient lubrication or cooling.

[0097] Furthermore, the liquid medium 20 (eg, oil) can be transported to the parts of the housing 1 that require cooling and lubrication through the pump assembly, thereby improving the reliability and stability of the driving device 100 during operation.

[0098] In the second chamber 102, the second transmission component 22 is arranged above the liquid level of the liquid medium 20 to reduce oil stirring losses and energy losses caused by oil turbulence and disturbances, and the suction position of the pump component can be set in the second chamber 102 or the third chamber 103, thereby effectively preventing the liquid level disturbance caused by the oil stirring of the transmission mechanism 2 or other moving parts from affecting the pump component in extracting the liquid medium 20.

[0099] according to Figure 1 The structure of the driving device 100 according to the embodiment of the present application is described as follows:

[0100] A first partition plate 11 and a second partition plate 12 are provided in the shell 1. The first partition plate 11 and the second partition plate 12 are arranged parallel to each other, and the first partition plate 11 and the second partition plate 12 are respectively arranged perpendicular to the axial direction of the output shaft 201 and can be used for the output shaft 201 to pass through. The first partition plate 11 forms a first hole 111, and the second partition plate 12 forms a second hole 121.

[0101] The power source 3 is arranged in the third cavity 103, and the power source 3 is connected to the first transmission gear 221 in the second cavity 102, the first transmission gear 221 is meshed with the second transmission gear 222, the second transmission gear 222 transmits power to the gear set 211 through the countershaft 23, the gear set 211 is connected to the differential 212, and the differential 212 distributes the power to the first output shaft 2011 and the second output shaft 2012.

[0102] It should be noted that the first output shaft 2011, the second output shaft 2012 and the input shaft 31 are coaxially arranged, the secondary shaft 23 is arranged above the liquid surface of the liquid medium 20, and the liquid surface of the liquid medium 20 submerges the lower edges of the first hole 111 and the second hole 121, and the first hole 111 is arranged lower than the second hole 121. The posture of the first hole 111 and the second hole 121 is based on the installation posture of the whole vehicle. That is, when the drive device 100 is installed on the vehicle 1000, the first hole 111 is placed below the second hole 121.

[0103] According to the vehicle 1000 of the embodiment of the present application, the vehicle 1000 includes the above-mentioned driving device 100 .

[0104] It should be noted that the drive device 100 can be applied to an electric drive assembly, a hybrid power assembly, a fuel drive assembly, etc. in the vehicle 1000, but is not limited thereto. The system in which the drive device 100 is applied only needs to include a power source 3 and a transmission mechanism 2.

[0105] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0106] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0107] In the description of the present application, “plurality” means two or more.

[0108] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0109] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0110] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0111] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A transmission device, characterized in that: include: Transmission mechanism (2); A shell (1), wherein a first partition (11) is provided in the shell (1), wherein the first partition (11) partitions the shell (1) into a first chamber (101) and a second chamber (102), wherein the transmission mechanism (2) is provided in the first chamber (101) and the second chamber (102), wherein the first chamber (101) and the second chamber (102) are used to contain a liquid medium (20), and wherein the first partition (111) is provided with a first hole (111) for the liquid medium to flow through.

2. The transmission device according to claim 1, characterized in that: The transmission mechanism (2) comprises an input shaft (31) and an output shaft (201); the input shaft (31) is suitable for being connected to a power source; the input shaft (31) and the output shaft (201) are coaxially arranged.

3. The transmission device according to claim 2, characterized in that: The transmission mechanism (2) comprises: A first transmission assembly (21), the first transmission assembly (21) being disposed in the first cavity (101), and the first transmission assembly (21) being in power connection with the output shaft (201); A second transmission assembly (22), wherein the second transmission assembly (22) is disposed in the second cavity (102), and the second transmission assembly (22) is dynamically connected to the input shaft (31).

4. The transmission device according to claim 3, characterized in that: The second transmission assembly (22) comprises: A first transmission gear (221), the first transmission gear (221) being connected to the input shaft (31); A second transmission gear (222), the second transmission gear (222) is meshed with the first transmission gear (221), and the central axis of the second transmission gear (222) is eccentrically arranged relative to the output shaft (201), and the second transmission gear (222) is connected to the first transmission assembly (21).

5. The transmission device according to claim 4, characterized in that: The second transmission component (22) is arranged above the liquid surface of the liquid medium (20), and the first transmission component (21) is partially immersed in the liquid medium.

6. The transmission device according to claim 4, characterized in that: The first transmission assembly (21) comprises: a third transmission gear (211), the third transmission gear (211) being power-connected to the second transmission gear (222); A differential (212), wherein the differential (212) is respectively connected to the third transmission gear (211) and the output shaft (201) in power connection.

7. The transmission device according to claim 3, characterized in that: The transmission mechanism (2) is mounted on the first partition plate (11).

8. A driving device, characterized in that: The driving device (100) comprises a power source (3) and a transmission device (10) according to any one of claims 1 to 7; The housing (1) further comprises a third chamber (103), the power source (3) being arranged in the third chamber (103), the third chamber (103) being formed on a side of the second chamber (102) away from the first chamber (101), the third chamber (103) and the second chamber (102) being separated by a second partition (12), the second partition (12) being provided with a second hole (121) for the liquid medium (20) to flow through.

9. The driving device according to claim 8, characterized in that: The height position of the first hole (111) is lower than the height position of the second hole (121).

10. The driving device according to claim 8, characterized in that: The power source (3) is mounted on the second partition plate (12).

11. The driving device according to claim 8, characterized in that: It also comprises a pump assembly, which is used to transport the liquid medium (20) to the transmission mechanism (2).

12. The driving device according to claim 11, characterized in that: The liquid suction position of the pump assembly is arranged in the second chamber (102) and / or the third chamber (103).

13. The driving device according to claim 11, characterized in that: The first hole (111) is spaced apart from the bottom wall of the first cavity (101) in the vertical direction, and the liquid suction position of the pump assembly is arranged in the first cavity (101).

14. The driving device according to claim 8, characterized in that: The liquid level of the liquid medium (20) is higher than the lower edge of the second hole (121).

15. A vehicle, characterized in that: It comprises a driving device (100) according to any one of claims 8-14.

Images