Oil cooling device, transmission, power assembly and vehicle

Abstract

The utility model discloses an oil cooling device, a transmission, a power assembly and a vehicle, the oil cooling device is provided with a heat exchange medium flow channel and an oil liquid flow channel which are matched with each other in a heat exchange mode, the oil cooling device is provided with a first device flow channel and a second device flow channel, and the oil liquid flow channel is communicated with the first device flow channel and the second device flow channel; the oil cooling device is further provided with a connecting flow channel and a main oil inlet flow channel, the connecting flow channel comprises a plurality of sub-flow-channel sections which are sequentially connected, any two adjacent sub-flow-channel sections are connected in a bent mode, the first device flow channel is communicated with one sub-flow-channel section, and the main oil inlet flow channel is selectively communicated with the second device flow channel and one of the other sub-flow-channel sections. Therefore, the main oil inlet flow channel selectively communicates with one of the second device flow channel and the other sub flow channel section, the effect of regulating and controlling the temperature rise and the temperature drop of the oil liquid can be achieved, regulation and control over the temperature of the oil liquid are achieved, and the oil cooling device is simple in structure, low in manufacturing cost and convenient to produce and manufacture.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, in particular to an oil cooling device, a transmission, a power assembly and a vehicle. Background Art

[0002] In the related art, the existing powertrain oil cooling device can only reduce the temperature of the oil, but cannot regulate the temperature rise of the oil, and cannot adjust the oil temperature rise or temperature in the powertrain in real time according to the working conditions of the vehicle. In addition, the existing oil cooling device has a complex structure, high manufacturing cost, and is not easy to produce. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an oil cooling device that can achieve the effect of regulating the temperature rise and temperature drop of the oil, thereby achieving the regulation of the oil temperature.

[0004] The utility model further provides a transmission.

[0005] The utility model further proposes a power assembly.

[0006] The utility model further provides a vehicle.

[0007] The oil cooling device of the power assembly according to the utility model comprises:

[0008] The oil cooling device is formed with a heat exchange medium flow channel and an oil flow channel for heat exchange cooperation, the oil cooling device has a first device flow channel and a second device flow channel, and the oil flow channel communicates with the first device flow channel and the second device flow channel;

[0009] The oil cooling device also forms a connecting flow channel and a main oil inlet flow channel, the connecting flow channel includes a plurality of sub-flow channel segments connected in sequence, any two adjacent sub-flow channel segments are connected by bending, the first device flow channel is connected to one of the sub-flow channel segments, and the main oil inlet flow channel is selectively connected to the second device flow channel and one of the other sub-flow channel segments.

[0010] According to the oil cooling device of the powertrain of the utility model, the main oil inlet flow channel is selectively connected with the second device flow channel and one of the other sub-flow channel sections. When the main oil inlet flow channel is connected with the corresponding sub-flow channel section, the oil flowing into the main oil inlet flow channel can flow into the first device flow channel along the connecting flow channel. When the first device flow channel is the device oil inlet flow channel and the second device flow channel is the device oil outlet flow channel, the oil flows into the oil flow channel through the first device flow channel, the oil flows along the oil flow channel and flows out through the second device flow channel. The heat exchange medium in the heat exchange medium flow channel can exchange heat with the oil in the oil flow channel during the flow process, thereby reducing the oil temperature. When the main oil inlet flow channel is connected to the second device flow channel, the oil flowing into the main oil inlet flow channel flows to the second device flow channel. Compared with when the main oil inlet flow channel is connected to the corresponding sub-flow channel section, the oil does not flow through the oil flow channel and does not exchange heat with the heat exchange medium in the heat exchange medium flow channel, but enters the transmission along the second device flow channel. It can also be understood that it enters the powertrain along the second device flow channel, and the heat generated by the operation of the working parts inside the powertrain is transferred to the oil, so that the oil temperature rises rapidly. When the oil temperature is low, the main oil inlet flow channel is connected to the second device flow channel, which is conducive to the rapid increase of the oil temperature and achieves the purpose of active temperature control. When the oil temperature is high and needs to be cooled, the main oil inlet flow channel is connected to the corresponding sub-flow channel section, and the oil enters the oil cooler and is cooled by the heat exchange medium, which increases the oil cooling rate and reduces the oil temperature. Therefore, by selectively connecting the main oil inlet channel with the second device channel and one of the other sub-channel sections, the effect of regulating the heating and cooling of the oil can be achieved, thereby realizing the regulation of the oil temperature. In addition, the oil cooling device has a simple structure, low manufacturing cost, and is easy to produce.

[0011] In some examples of the present invention, one of the two sub-flow channel sections located at the end is communicated with the first device flow channel, and the other of the two sub-flow channel sections located at the end is suitable for communicating with the main oil inlet flow channel.

[0012] In some examples of the present invention, an angle β is formed between at least two adjacent sub-flow channel segments, satisfying the relationship: 70°≤β≤110°.

[0013] In some examples of the present invention, at least two adjacent sub-flow channel segments are perpendicular.

[0014] In some examples of the present invention, two central axes of at least two adjacent sub-flow channel segments are staggered.

[0015] In some examples of the present invention, an angle is formed between the sub-channel segment connected to the first device channel and the first device channel.

[0016] In some examples of the present utility model, an angle is formed between the sub-flow channel section adapted to communicate with the main oil inlet flow channel and the main oil inlet flow channel.

[0017] In some examples of the present invention, a central axis of the first device flow channel and a central axis of the main oil inlet flow channel are staggered.

[0018] In some examples of the present invention, the central axis of the first device flow channel and the central axis of the main oil inlet flow channel are parallel to each other.

[0019] In some examples of the present invention, the oil cooling device also forms a bypass flow channel, which is connected to the second device flow channel, and the main oil inlet flow channel is selectively connected to the bypass flow channel so that the bypass flow channel connects the second device flow channel and the main oil inlet flow channel.

[0020] In some examples of the present invention, the bypass flow channel is configured as a straight flow channel.

[0021] In some examples of the present utility model, the central axis of the main oil inlet flow channel is the first axis, the central axis of the bypass flow channel is the second axis, and the central axis of the second device flow channel is the third axis;

[0022] The first axis and the second axis are in the same plane, or the second axis and the third axis are in the same plane, or the first axis, the second axis and the third axis are all in the same plane.

[0023] In some examples of the present invention, the bypass flow channel and the sub-flow channel section connected to the main oil inlet flow channel are both arranged in the outer casing of the transmission, and the bypass flow channel and the sub-flow channel section connected to the main oil inlet flow channel are perpendicular to the first axis or the third axis.

[0024] In some examples of the present invention, the oil cooling device is also formed with a regulating flow channel, and the regulating flow channel is formed with a first connecting port, a second connecting port and a third connecting port, the first connecting port is connected to the second device flow channel, the second connecting port is connected to the other sub-flow channel segment, and the third connecting port is connected to the main oil inlet flow channel, and one of the first connecting port and the second connecting port is selectively closed.

[0025] In some examples of the present invention, the oil cooling device of the powertrain further includes: an adjustment control unit, at least a portion of which is disposed in the adjustment flow channel, and the adjustment control unit is used to selectively close one of the first connecting port and the second connecting port.

[0026] In some examples of the present invention, the control unit is a solenoid valve.

[0027] In some examples of the present utility model, the oil cooling device includes a first body and a second body, the first body and the second body are fixedly connected, the first body forms the heat exchange medium flow channel and the oil flow channel, and the second body forms the first device flow channel, the second device flow channel, the connecting flow channel and the main oil inlet flow channel.

[0028] The transmission according to the utility model comprises the above-mentioned oil cooling device.

[0029] In some examples of the present utility model, the transmission includes a housing, the oil cooling device includes a first body and a second body, the first body and the second body are fixedly connected, the first body forms the heat exchange medium flow channel and the oil flow channel, the second body forms the first device flow channel, the second device flow channel, the connecting flow channel and the main oil inlet flow channel, and the second body is formed by the housing.

[0030] In some examples of the present invention, the transmission further includes: a temperature detection component, which is used to detect the oil temperature in the transmission, and the temperature detection component and the oil cooling device are both connected to a controller.

[0031] The power assembly according to the utility model includes the above-mentioned transmission.

[0032] The vehicle according to the utility model includes the above-mentioned powertrain or the above-mentioned transmission.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0035] Figure 1 It is a schematic diagram of the assembly of the oil cooling device and the housing according to an embodiment of the utility model;

[0036] Figure 2 It is a schematic diagram of the assembly of the oil cooling device and the housing according to another angle of the embodiment of the utility model;

[0037] Figure 3 This is a side view of the oil cooling device and the housing assembly according to an embodiment of the utility model;

[0038] Figure 4 yes Figure 3 Sectional view at AA;

[0039] Figure 5It is a side view of the oil cooling device and the housing assembly according to another angle of the embodiment of the utility model;

[0040] Figure 6 yes Figure 5 Cross-sectional view at BB in the middle.

[0041] Reference numerals:

[0042] Oil cooling device 100;

[0043] Heat exchange medium outlet 12;

[0044] First device flow channel 30; second device flow channel 40;

[0045] Connecting flow channel 50; sub-flow channel section 51;

[0046] Main oil inlet channel 60;

[0047] Adjusting flow channel 70; first communication port 71; second communication port 72; third communication port 73;

[0048] Adjustment control 80;

[0049] Bypass flow channel 90;

[0050] The first body 101; the second body 102;

[0051] Housing 200. DETAILED DESCRIPTION

[0052] The embodiments of the present invention 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 invention, and cannot be understood as limiting the present invention.

[0053] Reference below Figure 1-Figure 6 The oil cooling device 100 according to the embodiment of the utility model is described. The oil cooling device 100 may be an oil cooler. The oil cooling device 100 may be used for cooling the oil in the transmission. The transmission may include a housing 200. For example, the housing 200 may be a transmission housing 200. The oil cooling device 100 may be fixed to the transmission housing 200. The housing 200 may contain oil, which may be lubricating oil. The transmission may be part of a powertrain. The powertrain may be an electric powertrain or a hybrid powertrain.

[0054] like Figure 1-Figure 6As shown, the oil cooling device 100 of the powertrain according to the embodiment of the utility model comprises: the oil cooling device 100 is formed with a heat exchange medium flow channel and an oil flow channel for heat exchange matching, the oil cooling device 100 has a first device flow channel 30 and a second device flow channel 40, and the oil flow channel connects the first device flow channel 30 and the second device flow channel 40. The oil cooling device 100 is also formed with a connecting flow channel 50 and a main oil inlet flow channel 60, the connecting flow channel 50 includes a plurality of sub-flow channel sections 51 connected in sequence, any two adjacent sub-flow channel sections 51 are bent and connected, the first device flow channel 30 is connected with one sub-flow channel section 51, and the main oil inlet flow channel 60 is selectively connected with the second device flow channel 40 and one of the other sub-flow channel sections 51.

[0055] The oil cooling device 100 is formed with a heat exchange medium flow channel and an oil flow channel, and the heat exchange medium flow channel and the oil flow channel can be arranged adjacent to each other. The oil cooling device 100 can be formed with a heat exchange medium inlet and a heat exchange medium outlet 12, and the heat exchange medium flow channel connects the heat exchange medium inlet and the heat exchange medium outlet 12. The heat exchange medium (for example, water, gas, etc.) flows into the heat exchange medium flow channel from the heat exchange medium inlet, and the heat exchange medium flowing into the heat exchange medium flow channel flows along the heat exchange medium flow channel to the heat exchange medium outlet 12, and the heat exchange medium flows out of the oil cooling device 100 through the heat exchange medium outlet 12. The oil cooling device 100 has a first device flow channel 30 and a second device flow channel 40, and the oil flow channel connects the first device flow channel 30 and the second device flow channel 40. One of the first device flow channel 30 and the second device flow channel 40 is a device oil outlet flow channel, and the other of the first device flow channel 30 and the second device flow channel 40 is a device oil inlet flow channel. It can also be understood that when the first device flow channel 30 is a device oil inlet flow channel, the second device flow channel 40 is a device oil outlet flow channel, and when the first device flow channel 30 is a device oil outlet flow channel, the second device flow channel 40 is a device oil inlet flow channel. This application is described by taking the first device flow channel 30 as the device oil inlet flow channel and the second device flow channel 40 as the device oil outlet flow channel as an example.

[0056] The lubricating oil in the transmission can flow into the oil flow channel through the first device flow channel 30, and the lubricating oil flowing into the oil flow channel flows along the oil flow channel to the second device flow channel 40, and the lubricating oil flows out of the oil cooling device 100 from the second device flow channel 40. When the heat exchange medium flows in the heat exchange medium flow channel and the oil flows in the oil flow channel, heat exchange between the heat exchange medium and the oil can be achieved.

[0057] like Figure 4 and Figure 6As shown, the oil cooling device 100 is further formed with a connecting flow channel 50 and a main oil inlet flow channel 60. The connecting flow channel 50 includes a plurality of sub-flow channel segments 51. The sub-flow channel segments 51 can be set to two, three, four, etc. The number of sub-flow channel segments 51 can be reasonably set according to actual conditions. The plurality of sub-flow channel segments 51 are connected in sequence, any two adjacent sub-flow channel segments 51 are connected, any two adjacent sub-flow channel segments 51 are bent and connected, and an angle is formed between any two adjacent sub-flow channel segments 51. The angle between any two adjacent sub-flow channel segments 51 can be reasonably set according to actual needs. The first device flow channel 30 is connected to one of the multiple sub-flow channel segments 51, and the main oil inlet flow channel 60 is selectively connected to the second device flow channel 40 or another sub-flow channel segment 51 of the multiple sub-flow channel segments 51. The sub-flow channel segment 51 connected to the first device flow channel 30 and the sub-flow channel segment 51 connected to the main oil inlet flow channel 60 are two different sub-flow channel segments 51. It can also be understood that one of the two different sub-flow channel segments 51 in the multiple sub-flow channel segments 51 is connected to the first device flow channel 30, and the other of the two different sub-flow channel segments 51 in the multiple sub-flow channel segments 51 is suitable for connecting to the main oil inlet flow channel 60. The main oil inlet flow channel 60 can be connected to the inside of the housing 200, and the lubricating oil in the housing 200 can flow into the main oil inlet flow channel 60.

[0058] As an example, the oil cooling device 100 is formed with a connecting flow channel, and the connecting flow channel has three interfaces, which are respectively connected to the main oil inlet flow channel 60, the second device flow channel 40, and the corresponding sub-flow channel section 51. The three-way valve structure is arranged in the connecting flow channel, and the main oil inlet flow channel 60 can be controlled by the three-way valve structure to selectively connect with the second device flow channel 40 and one of the corresponding sub-flow channel sections 51.

[0059] As another example, the main oil inlet flow channel 60 can also be controlled by an opening and closing door to selectively communicate with the second device flow channel 40 and one of the corresponding sub-flow channel sections 51. Specifically, the outlet of the main oil inlet flow channel 60 is connected to the inlet of the second device flow channel 40 and the inlet of the corresponding sub-flow channel section 51. The opening and closing door is used to close one of the inlet of the second device flow channel 40 and the inlet of the corresponding sub-flow channel section 51, so that the main oil inlet flow channel 60 is connected to the inlet of the second device flow channel 40 and the other of the inlet of the corresponding sub-flow channel section 51. However, the utility model is not limited to this, and the main oil inlet flow channel 60 can also be controlled to selectively communicate with the second device flow channel 40 and one of the corresponding sub-flow channel sections 51 by other schemes, as long as it can achieve the control of the main oil inlet flow channel 60 selectively communicating with the second device flow channel 40 and one of the corresponding sub-flow channel sections 51.

[0060] When the main oil inlet channel 60 is connected with the corresponding sub-channel section 51, the oil flowing into the main oil inlet channel 60 can flow into the first device channel 30 along the connecting channel 50. When the first device channel is the device oil inlet channel and the second device channel is the device oil outlet channel, the oil flows into the oil channel through the first device channel 30, and the oil flows along the oil channel and flows out through the second device channel 40. The heat exchange medium in the heat exchange medium channel can exchange heat with the oil in the oil channel during the flow process, thereby reducing the oil temperature.

[0061] When the main oil inlet flow channel 60 is connected to the second device flow channel 40, the oil flowing into the main oil inlet flow channel 60 flows to the second device flow channel 40. Compared with when the main oil inlet flow channel 60 is connected to the corresponding sub-flow channel section 51, the oil does not flow through the oil flow channel and does not exchange heat with the heat exchange medium in the heat exchange medium flow channel, but enters the transmission along the second device flow channel 40. It can also be understood that it enters the powertrain along the second device flow channel 40, and the heat generated by the operation of the working parts inside the powertrain is transferred to the oil, so that the oil temperature rises rapidly. When the oil temperature is low, for example: when the oil temperature is less than or equal to 30°, the main oil inlet flow channel 60 is connected to the second device flow channel 40, which is conducive to the rapid increase of the oil temperature and achieves the purpose of active temperature control. When the oil temperature is high and needs to be cooled, the main oil inlet flow channel 60 is connected to the corresponding sub-flow channel section 51, and the oil enters the oil cooler and is cooled by the heat exchange medium, thereby reducing the oil temperature. Therefore, by selectively connecting the main oil inlet channel 60 with the second device channel 40 and one of the other sub-channel sections 51, the effect of regulating the heating and cooling of the oil can be achieved, thereby realizing the regulation of the oil temperature. In addition, the oil cooling device 100 has a simple structure, low manufacturing cost, and is easy to produce.

[0062] Moreover, when the main oil inlet flow channel 60 is connected to the second device flow channel 40, the inlet of the corresponding sub-flow channel section 51 connected to the main oil inlet flow channel 60 is closed by the opening and closing door, the three-way valve structure, etc., and the opening and closing door, the three-way valve structure and the inlet of the corresponding sub-flow channel section 51 cannot be completely sealed, and there will be a certain gap. Under the action of oil pressure, a small amount of oil will flow into the oil flow channel, thereby affecting the oil temperature rise rate. Therefore, by setting the two adjacent sub-flow channel sections 51 to bend and connect, the oil flows into the connecting flow channel 50, and the oil flowing into the connecting flow channel 50 needs to change its flow direction before it can flow into the first device flow channel 30. When the oil passes through the connecting flow channel 50, the flow resistance becomes larger and the oil pressure decreases, which is conducive to reducing the amount of oil entering the oil flow channel, reducing the amount of oil cooled, and facilitating the oil temperature rise.

[0063] As an example, during the operation of the powertrain, when the oil temperature in the powertrain is low, the powertrain operating efficiency is low. For example, when the powertrain is started at low temperature, or when the powertrain is running in a cold environment, it is necessary to quickly increase the oil temperature in the powertrain to make the powertrain run in an efficient state. This application takes the low-temperature start of the powertrain as an example. When the powertrain is started at low temperature, the main oil inlet flow channel 60 is connected to the second device flow channel 40, and the oil flowing into the main oil inlet flow channel 60 flows to the second device flow channel 40. The oil enters the powertrain along the second device flow channel 40, and the heat generated by the operation of the working parts inside the powertrain is transferred to the oil, thereby quickly increasing the oil temperature to achieve the purpose of active temperature control.

[0064] When the oil temperature in the powertrain rises to a preset threshold and needs to be cooled, the main oil inlet channel 60 is connected with the corresponding sub-channel section 51, and the oil enters the oil cooler to be cooled by the heat exchange medium, thereby reducing the oil temperature.

[0065] It should be noted that when the first device flow channel 30 is the device oil outlet flow channel and the second device flow channel 40 is the device oil inlet flow channel. If the main oil inlet flow channel 60 is connected to the second device flow channel 40, the oil flowing into the main oil inlet flow channel 60 can flow into the second device flow channel 40, the oil flows into the oil flow channel through the second device flow channel 40, the oil flows along the oil flow channel and flows out through the first device flow channel 30, and the heat exchange medium in the heat exchange medium flow channel can exchange heat with the oil in the oil flow channel during the flow process, thereby reducing the oil temperature.

[0066] If the main oil inlet flow channel 60 is connected with the corresponding sub-flow channel section 51, the oil flowing into the main oil inlet flow channel 60 flows to the first device flow channel 30. Compared with when the main oil inlet flow channel 60 is connected with the second device flow channel 40, the oil does not flow through the oil flow channel and does not exchange heat with the heat exchange medium in the heat exchange medium flow channel. The oil enters the powertrain along the first device flow channel 30, and the heat generated by the operation of the working parts inside the powertrain is transferred to the oil, causing the oil temperature to rise rapidly.

[0067] Thus, by selectively connecting the main oil inlet flow channel 60 with the second device flow channel 40 and another sub-flow channel section 51, the effect of regulating the temperature rise and fall of the oil can be achieved, thereby achieving the regulation of the oil temperature, and the oil cooling device 100 has a simple structure, low manufacturing cost, and is easy to manufacture. In addition, when the main oil inlet flow channel 60 is connected with the second device flow channel 40, it is beneficial to reduce the amount of oil entering the oil flow channel, which is beneficial to the temperature rise of the oil.

[0068] In some examples of the present invention, one of the two sub-flow channel sections 51 at the end is communicated with the first device flow channel 30 , and the other of the two sub-flow channel sections 51 at the end is suitable for communicating with the main oil inlet flow channel 60 .

[0069] Among them, along the length direction of the connecting flow channel 50, there is a sub-flow channel section 51 at each end of the connecting flow channel 50, the sub-flow channel section 51 located at one end is connected with the first device flow channel 30, and the sub-flow channel section 51 located at the other end is suitable for connecting with the main oil inlet flow channel 60, and the main oil inlet flow channel 60 selectively connects with the corresponding sub-flow channel section 51. Through the two sub-flow channel sections 51 located at the ends, which are respectively connected with the first device flow channel 30 and the main oil inlet flow channel 60, when the main oil inlet flow channel 60 is connected with the second device flow channel 40, if the oil flows into the connecting flow channel 50, the oil can flow through each sub-flow channel section 51, which can increase the flow path of the oil in the connecting flow channel 50, which is conducive to improving the flow resistance of the oil, further reducing the oil pressure, and further reducing the amount of oil entering the oil flow channel. The amount of oil cooled is further reduced, which is more conducive to the temperature rise of the oil.

[0070] In some examples of the present invention, at least two adjacent sub-channel segments 51 form an angle β, satisfying the relationship: 70≤β≤110°. Among them, at least two sub-channel segments 51 form an angle β, for example: when there are two sub-channel segments 51, the two sub-channel segments 51 form an angle β, or when there are three sub-channel segments 51, two sub-channel segments 51 may form an angle β, or each two adjacent sub-channel segments 51 may form an angle β. This application takes the example of two adjacent sub-channel segments 51 forming an angle β. β can be set to values ​​such as 70°, 75°, 80°, 95°, 100°, 110°, etc.

[0071] When β is less than 70°, it is not convenient for the oil to flow between two adjacent sub-channel sections 51. When the main oil inlet channel 60 is connected to the corresponding sub-channel section 51, it is not convenient for the oil to flow into the oil channel, which affects the cooling efficiency of the oil. When β is greater than 110°, the oil flows faster between two adjacent sub-channel sections 51. When the main oil inlet channel 60 is connected to the second device channel 40, it is not conducive to increasing the flow resistance of the oil, reducing the oil pressure, and reducing the amount of oil entering the oil channel. Therefore, by setting 70≤β≤110°, it is convenient for the oil to flow between two adjacent sub-channel sections 51. When the main oil inlet channel 60 is connected with the corresponding sub-channel section 51, it is convenient for the oil to flow into the oil channel, thereby maintaining the cooling efficiency of the oil. Moreover, when the main oil inlet channel 60 is connected with the second device channel 40, it is more conducive to improving the flow resistance of the oil, more conducive to reducing the oil pressure, more conducive to reducing the amount of oil entering the oil channel, and more conducive to heating the oil.

[0072] In some examples of the present invention, at least two adjacent sub-channel sections 51 are vertical, wherein the present application takes any two adjacent sub-channel sections 51 as an example for explanation, and a 90° angle is formed between the two adjacent sub-channel sections 51. By vertically arranging the two adjacent sub-channel sections 51, it is convenient for the oil to flow between the two adjacent sub-channel sections 51, which is conducive to improving the flow resistance of the oil. When the main oil inlet channel 60 is connected to the second device channel 40, it is conducive to reducing the oil pressure and the amount of oil entering the oil channel. In addition, it is convenient to process the connecting channel 50 on the oil cooling device 100, which is conducive to improving the production efficiency of the oil cooling device 100.

[0073] In some examples of the present invention, the two central axes of at least two adjacent sub-flow channel sections 51 are staggered. It should be noted that the two central axes of two adjacent sub-flow channel sections 51 are staggered, which means that the two central axes of the two adjacent sub-flow channel sections 51 do not intersect. As an example, the two central axes of two adjacent sub-flow channel sections 51 in a plurality of sub-flow channel sections 51 are staggered. As another example, the two central axes of any two adjacent sub-flow channel sections 51 are staggered, in other words, the central axis of each sub-flow channel section 51 is staggered with the central axis of the adjacent sub-flow channel section 51. By staggering the two central axes of at least two adjacent sub-flow channel sections 51, that is, the two central axes of at least two adjacent sub-flow channel sections 51 do not intersect, when the main oil inlet flow channel 60 is connected to the second device flow channel 40, the oil is not easy to flow between the two adjacent sub-flow channel sections 51 with staggered central axes, which is more conducive to improving the flow resistance of the oil, more conducive to reducing the oil pressure, more conducive to reducing the amount of oil entering the oil flow channel, and more conducive to oil temperature rise.

[0074] In some examples of the present invention, Figure 4 As shown, an angle is formed between the sub-channel section 51 connected to the first device channel 30 and the first device channel 30. In other words, an angle is formed between the first device channel 30 and the corresponding sub-channel section 51. Among them, the angle formed between the first device channel 30 and the corresponding sub-channel section 51 can be reasonably set according to actual conditions. The angle formed between the first device channel 30 and the corresponding sub-channel section 51 can be 80°, 90°, etc. This application takes the first device channel 30 and the corresponding sub-channel section 51 as an example for explanation, that is, the angle formed between the first device channel 30 and the corresponding sub-channel section 51 is 90°. When the main oil inlet channel 60 is connected to the second device channel 40 by forming an angle between the first device channel 30 and the corresponding sub-channel section 51, after the oil flows into the connecting channel 50, the flow resistance of the oil is further increased, the oil pressure is further reduced, the amount of oil entering the oil channel is further reduced, and the oil heating efficiency is further improved.

[0075] In some examples of the present invention, Figure 4and Figure 6 As shown, an angle is formed between the sub-flow channel section 51 suitable for communicating with the main oil inlet flow channel 60 and the main oil inlet flow channel 60. In other words, an angle is formed between the main oil inlet flow channel 60 and the corresponding sub-flow channel section 51. When the main oil inlet flow channel 60 and the corresponding sub-flow channel section 51 are directly connected, an angle is formed between the main oil inlet flow channel 60 and the corresponding sub-flow channel section 51. When the main oil inlet flow channel 60 is connected to the corresponding sub-flow channel section 51 through the connecting flow channel, the extension section of the main oil inlet flow channel 60 and the extension section of the corresponding sub-flow channel section 51 intersect and form an angle. The angle formed between the main oil inlet flow channel 60 and the corresponding sub-flow channel section 51 can be reasonably set according to actual conditions. The angle formed between the main oil inlet flow channel 60 and the corresponding sub-flow channel section 51 can be 80°, 90°, etc. This application takes the example of the main oil inlet flow channel 60 and the corresponding sub-flow channel section 51 being perpendicular to each other as an example, that is, the angle formed between the main oil inlet flow channel 60 and the corresponding sub-flow channel section 51 is 90°. By forming an angle between the main oil inlet flow channel 60 and the corresponding sub-flow channel section 51, when the main oil inlet flow channel 60 is connected to the second device flow channel 40, it is helpful to reduce the amount of oil flowing into the connecting flow channel 50.

[0076] In some examples of the present invention, the central axis of the first device flow channel 30 and the central axis of the main oil inlet flow channel 60 are staggered. In other words, the central axis of the first device flow channel 30 and the central axis of the main oil inlet flow channel 60 do not intersect. Such a setting facilitates processing of the first device flow channel 30 and the main oil inlet flow channel 60 on the oil cooling device 100, which can further improve the production efficiency of the oil cooling device 100.

[0077] In some examples of the present invention, Figure 4 and Figure 6 As shown, the central axis of the first device flow channel 30 and the central axis of the main oil inlet flow channel 60 are parallel to each other. This arrangement can further improve the production efficiency of the oil cooling device 100.

[0078] In some examples of the present invention, Figure 4 and Figure 6 As shown, the oil cooling device 100 may also be formed with a bypass flow channel 90, the bypass flow channel 90 is connected to the second device flow channel 40, and the main oil inlet flow channel 60 is selectively connected to the bypass flow channel 90, so that the bypass flow channel 90 connects the second device flow channel 40 and the main oil inlet flow channel 60. That is, when the main oil inlet flow channel 60 is selectively connected to the second device flow channel 40, the main oil inlet flow channel 60 is connected to the second device flow channel 40 through the bypass flow channel 90; when the main oil inlet flow channel 60 is selectively connected to another sub-flow channel section 51, the bypass flow channel 90 is closed.

[0079] The oil cooling device 100 defines a bypass flow channel 90, the outlet of the bypass flow channel 90 is connected to the second device flow channel 40, and the main oil inlet flow channel 60 is selectively connected to the inlet of the bypass flow channel 90. When the main oil inlet flow channel 60 is connected to the inlet of the bypass flow channel 90, the bypass flow channel 90 connects the second device flow channel 40 and the main oil inlet flow channel 60. By providing the bypass flow channel 90, the effect of indirect connection between the second device flow channel 40 and the main oil inlet flow channel 60 can be achieved. When the bypass flow channel 90 is connected to the main oil inlet flow channel 60, the bypass flow channel 90 plays a guiding role on the oil, so that the oil can flow to the second device flow channel 40, which is conducive to the rapid flow of the oil out of the second device flow channel 40.

[0080] In some examples of the present invention, Figure 4 and Figure 6 As shown, the bypass flow channel 90 is configured as a straight flow channel. The bypass flow channel 90 can be configured as a straight flow channel, or the bypass flow channel 90 can be configured as a straight flow channel similar to a straight flow channel. By configuring the bypass flow channel 90 as a straight flow channel, compared with configuring the bypass flow channel 90 as an arc flow channel, the setting length of the bypass flow channel 90 can be reduced, and the manufacturing difficulty of the oil cooling device 100 can be reduced. Moreover, after the oil flows into the bypass flow channel 90, the oil can flow quickly to the second device flow channel 40, thereby reducing the flow time of the oil in the bypass flow channel 90, thereby increasing the rate at which the oil flows out of the oil cooling device 100.

[0081] In some examples of the utility model, the central axis of the main oil inlet flow channel 60 is the first axis, the central axis of the bypass flow channel 90 is the second axis, and the central axis of the second device flow channel 40 is the third axis. The first axis and the second axis are in the same plane, or the second axis and the third axis are in the same plane, or the first axis, the second axis and the third axis are all in the same plane. In some embodiments, the first axis and the second axis are basically in the same plane, or the second axis and the third axis are basically in the same plane, or, preferably, the first axis, the second axis and the third axis are basically in the same plane. By setting the first axis and the second axis in basically the same plane, or the second axis and the third axis in basically the same plane, the resistance of the oil flow at low temperature can be reduced. The viscosity of the oil is more sensitive to temperature changes. When the oil temperature is low, the viscosity of the oil is larger and the flow resistance of the oil is larger. In this example, the number of changes in direction when the oil flows is reduced, so that the flow resistance of the oil is reduced, thereby reducing the power loss of the driving source that drives the oil flow, and achieving energy saving.

[0082] In addition, in the oil cooler, the inlet and outlet of the oil flow channel in the oil cooler need to be distributed on the surface of the oil cooler facing the transmission side, and the oil in the outer shell 200 can easily enter and exit the oil cooler; wherein, the inlet and outlet of the oil flow channel need to be distributed at the diagonal position of the surface, so that the internal space of the oil cooler can be fully utilized and the oil can be fully cooled.

[0083] In order to allow the oil to enter and exit the oil cooler from the diagonal position of the surface, in this example, two adjacent sub-channel sections 51 are bent and connected so that the oil can flow through the bent sub-channel section 51 to the first device channel 30, and then enter the oil channel inlet set diagonally to the oil channel outlet, so as to make full use of the internal space of the oil cooler to cool the oil.

[0084] The first axis and the third axis may be substantially parallel so that oil can flow into and out of the transmission.

[0085] In some examples of the utility model, the bypass flow channel 90 and the sub-flow channel section 51 connected to the main oil inlet flow channel 60 are both arranged in the housing 200 of the transmission, and the bypass flow channel 90 and the sub-flow channel section 51 connected to the main oil inlet flow channel 60 are perpendicular to the first axis or the third axis. In some embodiments, the bypass flow channel 90 and the sub-flow channel section 51 connected to the main oil inlet flow channel 60 are both arranged in the housing 200, and the bypass flow channel 90 and the sub-flow channel section 51 connected to the main oil inlet flow channel 60 are basically perpendicular to the first axis or the third axis. Therefore, when the bypass flow channel 90 and the sub-flow channel section 51 connected to the main oil inlet flow channel 60 are formed by drilling in the housing 200, the flow channel extending perpendicular to the first axis or the third axis basically extends along the direction perpendicular to the wall thickness of the housing 200, so that the space occupied by the bypass flow channel 90 and the sub-flow channel section 51 connected to the main oil inlet flow channel 60 is reduced, and the integration of the housing 200 is improved. In addition, when the bypass flow channel 90 and the sub-flow channel section 51 connected to the main oil inlet flow channel 60 are formed by drilling in the housing 200, the positions that need to be sealed can be reduced, thereby reducing the risk of oil leakage.

[0086] It should be noted that the bypass channel 90 and the sub-channel section 51 connected to the main oil inlet channel 60 are both arranged in the shell 200, which means that the bypass channel 90 and the sub-channel section 51 connected to the main oil inlet channel 60 are formed on the side wall of the shell 200.

[0087] In some examples of the present invention, Figure 4 and Figure 6As shown, the oil cooling device 100 may also be formed with a regulating flow channel 70 (i.e., the communicating flow channel in the above embodiment), the regulating flow channel 70 is formed with a first communicating port 71, a second communicating port 72, and a third communicating port 73, the first communicating port 71 is communicated with the second device flow channel 40, the second communicating port 72 is communicated with another sub-flow channel section 51, the third communicating port 73 is communicated with the main oil inlet flow channel 60, and one of the first communicating port 71 and the second communicating port 72 is selectively closed. That is, when the main oil inlet flow channel 60 is selectively communicated with the second device flow channel 40, the third communicating port 73 and the first communicating port 71 are opened, and the second communicating port 72 is closed; when the main oil inlet flow channel 60 is selectively communicated with another sub-flow channel section 51, the third communicating port 73 and the second communicating port 72 are opened, and the first communicating port 71 is closed.

[0088] The oil cooling device 100 may further define a regulating flow channel 70, the regulating flow channel 70 having a first connecting port 71, a second connecting port 72 and a third connecting port 73, the first connecting port 71, the second connecting port 72 and the third connecting port 73 are all connected to the regulating flow channel 70, the first connecting port 71 connects the second device flow channel 40 and the regulating flow channel 70, when the oil cooling device 100 has a bypass flow channel 90, the bypass flow channel 90 is connected between the first connecting port 71 and the second device flow channel 40, the bypass flow channel 90 connects the first connecting port 71 and the second device flow channel 40. The sub-flow channel section 51 connected to the main oil inlet flow channel 60 is connected to the second connecting port 72, the second connecting port 72 connects the corresponding sub-flow channel section 51 and the regulating flow channel 70. The third connecting port 73 connects the regulating flow channel 70 and the main oil inlet flow channel 60. The first communication port 71 and the second communication port 72 are not opened at the same time, nor are they closed at the same time. When the first communication port 71 is opened, the second communication port 72 is closed, and when the second communication port 72 is opened, the first communication port 71 is closed. One of the first communication port 71 and the second communication port 72 can be opened and the other closed by a three-way valve structure, or one of the first communication port 71 and the second communication port 72 can be opened and the other closed by a rotating opening and closing door.

[0089] After the oil flows into the main oil inlet flow channel 60, it flows into the regulating flow channel 70 along the main oil inlet flow channel 60. When the first connecting port 71 is opened, the oil in the regulating flow channel 70 can flow into the second device flow channel 40. When the second connecting port 72 is opened, the oil in the regulating flow channel 70 can flow into the oil flow channel. By providing the regulating flow channel 70, it is convenient to realize that the main oil inlet flow channel 60 is selectively connected with the second device flow channel 40 and the corresponding sub-flow channel section 51, which is conducive to simplifying the structure of the oil cooling device 100 and reducing the difficulty of manufacturing the oil cooling device 100.

[0090] In some examples of the present invention, Figure 4 and Figure 6As shown, the oil cooling device 100 may further include: an adjustment control unit 80 , at least a portion of which is disposed in the adjustment flow channel 70 , and the adjustment control unit 80 is used to selectively close one of the first communication port 71 and the second communication port 72 .

[0091] Among them, the adjustment control unit 80 can be partially arranged in the adjustment channel 70, or the adjustment control unit 80 can be entirely arranged in the adjustment channel 70. When the adjustment control unit 80 is partially arranged in the adjustment channel 70, another part of the adjustment control unit 80 can be arranged in the connecting channel 50, or another part of the adjustment control unit 80 is arranged in the connecting channel 50 and extends out of the oil cooling device 100.

[0092] As an example, when the regulating control unit 80 is set to a three-way valve structure, at least a portion of the three-way valve structure is disposed in the regulating channel 70, the three-way valve structure can be fixedly installed on the oil cooling device 100 by bolts, and the on-off piece can also be snapped onto the oil cooling device 100. The three-way valve structure is used to close one of the first connecting port 71 and the second connecting port 72, thereby controlling the main oil inlet channel 60 to be connected to the second device channel 40 or the corresponding sub-channel section 51.

[0093] As another example, when the control unit 80 is set as a stop valve, the control unit 80 includes two stop valves, which are respectively arranged at the first connecting port 71 and the second connecting port 72. By controlling one of the two stop valves to open, the main oil inlet channel 60 is controlled to be connected with the second device channel 40 or the corresponding sub-channel section 51 is controlled to be connected.

[0094] As another example, when the control unit 80 is set as an opening and closing door, the control unit 80 may include two opening and closing doors, which are respectively arranged at the first connecting port 71 and the second connecting port 72, and the opening and closing door may be movably arranged at the oil cooling device 100, and the opening and closing door may be movably arranged at the oil cooling device 100 so that the opening and closing door closes the corresponding first connecting port 71 or the second connecting port 72, or the opening and closing door may be rotatably arranged at the oil cooling device 100 so that the opening and closing door closes the corresponding first connecting port 71 or the second connecting port 72, thereby achieving the effect of connecting the main oil inlet flow channel 60 with the second device flow channel 40 or connecting the corresponding sub-flow channel section 51. It should be noted that the structure of the control unit 80 may be reasonably selected and set according to actual conditions.

[0095] Furthermore, the control unit 80 can be controlled by the vehicle controller of the vehicle. The vehicle controller can control the operation of the control unit 80 according to the oil temperature in the powertrain, so that the control unit 80 closes one of the first connecting port 71 and the second connecting port 72, thereby achieving real-time control of the oil temperature.

[0096] In some examples of the present invention, Figure 4 and Figure 6 As shown, the control unit 80 can be set as a solenoid valve. The solenoid valve can be connected to the vehicle controller of the vehicle for communication, so that the vehicle controller can control the control unit 80. In addition, when the solenoid valve itself has a stuck fault, the vehicle controller can identify the solenoid valve fault through the feedback signal of the solenoid valve, without the need to check the entire oil cooling device 100, and the fault identification and elimination are more convenient. At the same time, when the solenoid valve fails, it is convenient to replace the solenoid valve.

[0097] In some examples of the present invention, Figure 4 and Figure 6 As shown, the oil cooling device 100 may include a first body 101 and a second body 102, the first body 101 and the second body 102 are fixedly connected, the first body 101 is formed with a heat exchange medium flow channel and an oil flow channel, and the second body 102 is formed with a first device flow channel 30, a second device flow channel 40, a connecting flow channel 50 and a main oil inlet flow channel 60.

[0098] The oil cooling device 100 includes a first body 101 and a second body 102. The first body 101 and the second body 102 can be integrally formed, or can be connected by snapping, or can be connected by welding. The first body 101 is formed with a heat exchange medium flow channel and an oil flow channel, and a heat exchange medium inlet and a heat exchange medium outlet 12 can be formed on the first body 101. The second body 102 is formed with a first device flow channel 30, a second device flow channel 40, a connecting flow channel 50 and a main oil inlet flow channel 60. The second body 102 can also be formed with a bypass flow channel 90, and the control unit 80 is arranged on the second body 102. When the main oil inlet flow channel 60 is connected with the second device flow channel 40, such a setting can reduce the risk of heat exchange between the heat exchange medium and the oil, and is more conducive to the temperature rise of the oil.

[0099] The transmission according to the embodiment of the utility model includes the oil cooling device 100 of the above embodiment. The oil cooling device 100 is arranged in the transmission, and can achieve the effect of regulating the temperature rise and temperature drop of the transmission oil, thereby achieving the regulation of the oil temperature. In addition, the oil cooling device has a simple structure, low manufacturing cost, and is easy to produce.

[0100] In some examples of the present invention, Figure 4 and Figure 6As shown, the transmission includes a housing 200, and the oil cooling device 100 may include a first body 101 and a second body 102, the first body 101 and the second body 102 are fixedly connected, the first body 101 forms a heat exchange medium flow channel and an oil flow channel, the second body 102 forms a first device flow channel 30, a second device flow channel 40, a connecting flow channel 50 and a main oil inlet flow channel 60, the second body 102 can be formed by the housing 200, and the housing 200 is constructed as the second body 102, so that the oil cooling device 100 and the transmission housing 200 can be integrated, which is beneficial to reducing the volume of the powertrain, and there is no need to change the internal structure of the transmission, nor to change the structure of the existing oil cooler.

[0101] Furthermore, the second device flow channel 40 can be connected to the interior of the housing 200, the second device flow channel 40 can extend into the housing 200, and the oil in the second device flow channel 40 can flow into the housing 200 through the second device flow channel 40, thereby providing oil with a suitable temperature for the structural parts of the powertrain.

[0102] like Figure 4 and Figure 6 As shown, in some examples of the present utility model, the oil cooling device 100 includes a first body 101 and a second body 102, the first body 101 is formed with a heat exchange medium inlet, a heat exchange medium outlet 12, a heat exchange medium flow channel and an oil flow channel. The second body 102 is formed with a first device flow channel 30, a second device flow channel 40, a connecting flow channel 50, a main oil inlet flow channel 60, a regulating flow channel 70 and a bypass flow channel 90. One end of the bypass channel 90 is connected to the second device channel 40, the other end of the bypass channel 90 is connected to the first communication port 71 of the regulating channel 70, the second communication port 72 of the regulating channel 70 is connected to the corresponding sub-channel segment 51, the third communication port 73 of the regulating channel 70 is connected to the main oil inlet channel 60, the connecting channel 50 is connected to the first device channel 30, the oil channel is connected to the first device channel 30 and the second device channel 40, the heat exchange medium channel is connected to the heat exchange medium inlet and the heat exchange medium outlet 12, and the second device channel 40 and the main oil inlet channel 60 are both connected to the inside of the housing 200. At least part of the solenoid valve is arranged in the regulating channel 70, the connecting channel 50 includes a plurality of sub-channel segments 51 connected in sequence, two adjacent sub-channel segments 51 are connected by bending, and at least two central axes of two adjacent sub-channel segments 51 are staggered.

[0103] In some examples of the present invention, the transmission further includes: a temperature detection element, the temperature detection element is used to detect the oil temperature in the transmission, and the temperature detection element and the oil cooling device 100 are both connected to the controller.

[0104] The oil cooling device 100 is configured to selectively connect the main oil inlet flow channel 60 with the second device flow channel 40 and the corresponding sub-flow channel section 51 according to the detection information of the temperature detection element.

[0105] Among them, the temperature detection part can be a temperature sensor, the temperature detection part can be fixed on the housing 200 of the transmission, the temperature detection part can detect the oil temperature in the housing 200 of the transmission, and the temperature detection part can detect the oil temperature in the housing 200 of the transmission in real time. The controller can be a vehicle controller of the vehicle, or a separate controller. This application takes the controller as a vehicle controller as an example for explanation. The temperature detection part and the oil cooling device 100 can be connected to the vehicle controller for communication, and the vehicle controller can be connected to the control unit 80 of the oil cooling device 100 for communication. When the vehicle controller obtains the detection temperature of the temperature detection part through the temperature detection part and it is low, the vehicle controller determines that the oil temperature needs to be increased, and the vehicle controller controls the control unit 80 to work so that the main oil inlet flow channel 60 is connected to the second device flow channel 40. When the vehicle controller obtains the detection temperature of the temperature detection part through the temperature detection part and it reaches a suitable temperature, the vehicle controller determines that the oil temperature needs to be lowered, and the vehicle controller controls the control unit 80 to work so that the main oil inlet flow channel 60 is connected to the corresponding sub-flow channel section 51. It can achieve real-time active temperature control effect, thereby effectively keeping the oil temperature at an appropriate temperature.

[0106] The powertrain according to the embodiment of the utility model includes the transmission of the above embodiment. The powertrain is provided with an oil cooling device 100, so as to achieve the effect of regulating the temperature rise and temperature drop of the powertrain oil, thereby achieving the regulation of the temperature of the powertrain oil. In addition, the oil cooling device 100 has a simple structure, low manufacturing cost, and is easy to manufacture, which is beneficial to reducing the manufacturing cost of the powertrain and simplifying the powertrain structure.

[0107] The vehicle according to the embodiment of the utility model includes the powertrain of the above embodiment, which can improve the working performance of the vehicle.

[0108] Other components of the powertrain according to the embodiment of the utility model, such as the speed change gear mechanism and the bearings, and the operations are known to those skilled in the art and will not be described in detail here.

[0109] 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 utility model. 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0110] Although the embodiments of the present invention 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 invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An oil cooling device (100), characterized in that: include: The oil cooling device (100) is formed with a heat exchange medium flow channel and an oil flow channel for heat exchange coordination, the oil cooling device (100) has a first device flow channel (30) and a second device flow channel (40), and the oil flow channel communicates with the first device flow channel (30) and the second device flow channel (40); The oil cooling device (100) is further formed with a connecting flow channel (50) and a main oil inlet flow channel (60), wherein the connecting flow channel (50) comprises a plurality of sub-flow channel sections (51) connected in sequence, and any two adjacent sub-flow channel sections (51) are connected in a bent manner; The first device flow channel (30) is in communication with one of the sub-flow channel sections (51), and the main oil inlet flow channel (60) is selectively in communication with the second device flow channel (40) and one of the other sub-flow channel sections (51).

2. The oil cooling device (100) according to claim 1, characterized in that: One of the two sub-channel sections (51) located at the end is connected to the first device channel (30), and the other of the two sub-channel sections (51) located at the end is suitable for connecting to the main oil inlet channel (60).

3. The oil cooling device (100) according to claim 1, characterized in that: An angle β is formed between at least two adjacent sub-channel sections (51), satisfying the relationship: 70°≤β≤110°.

4. The oil cooling device (100) according to claim 3, characterized in that: At least two adjacent sub-channel sections (51) are perpendicular.

5. The oil cooling device (100) according to claim 1, characterized in that: The two central axes of at least two adjacent sub-flow channel sections (51) are staggered.

6. The oil cooling device (100) according to claim 1, characterized in that: An angle is formed between the sub-flow channel section (51) connected to the first device flow channel (30) and the first device flow channel (30).

7. The oil cooling device (100) according to claim 1, characterized in that: An angle is formed between the sub-flow channel section (51) adapted to communicate with the main oil inlet flow channel (60) and the main oil inlet flow channel (60).

8. The oil cooling device (100) according to claim 1, characterized in that: The central axis of the first device flow channel (30) and the central axis of the main oil inlet flow channel (60) are offset.

9. The oil cooling device (100) according to claim 8, characterized in that: The central axis of the first device flow channel (30) and the central axis of the main oil inlet flow channel (60) are parallel to each other.

10. The oil cooling device (100) according to claim 1, characterized in that: The oil cooling device (100) is also formed with a bypass flow channel (90), and the bypass flow channel (90) is connected to the second device flow channel (40), and the main oil inlet flow channel (60) is selectively connected to the bypass flow channel (90) so that the bypass flow channel (90) is connected to the second device flow channel (40) and the main oil inlet flow channel (60).

11. The oil cooling device (100) according to claim 10, characterized in that: The bypass flow channel (90) is configured as a straight flow channel.

12. The oil cooling device (100) according to claim 10, characterized in that: The central axis of the main oil inlet flow channel (60) is a first axis, the central axis of the bypass flow channel (90) is a second axis, and the central axis of the second device flow channel (40) is a third axis; The first axis and the second axis are in the same plane, or the second axis and the third axis are in the same plane, or the first axis, the second axis and the third axis are all in the same plane.

13. The oil cooling device (100) according to claim 12, characterized in that: The bypass flow channel (90) and the sub-flow channel section (51) connected to the main oil inlet flow channel (60) are both arranged in a housing (200) of the transmission, and the bypass flow channel (90) and the sub-flow channel section (51) connected to the main oil inlet flow channel (60) are perpendicular to the first axis or the third axis.

14. The oil cooling device (100) according to claim 1, characterized in that: The oil cooling device (100) is also formed with a regulating flow channel (70), and the regulating flow channel (70) is formed with a first connecting port (71), a second connecting port (72) and a third connecting port (73), the first connecting port (71) is connected to the second device flow channel (40), the second connecting port (72) is connected to the other sub-flow channel section (51), and the third connecting port (73) is connected to the main oil inlet flow channel (60), and one of the first connecting port (71) and the second connecting port (72) is selectively closed.

15. The oil cooling device (100) according to claim 14, characterized in that: Also includes: An adjustment control unit (80), at least a portion of which is disposed in the adjustment flow channel (70), and the adjustment control unit (80) is used to selectively close one of the first communication port (71) and the second communication port (72).

16. The oil cooling device (100) according to claim 15, characterized in that: The control unit (80) is a solenoid valve.

17. The oil cooling device (100) according to any one of claims 1 to 16, characterized in that: The oil cooling device (100) comprises a first body (101) and a second body (102), wherein the first body (101) and the second body (102) are fixedly connected, the first body (101) forms the heat exchange medium flow channel and the oil flow channel, and the second body (102) forms the first device flow channel (30), the second device flow channel (40), the connecting flow channel (50) and the main oil inlet flow channel (60).

18. A transmission, characterized in that: It comprises an oil cooling device (100) according to any one of claims 1 to 17.

19. The transmission according to claim 18, characterized in that The transmission comprises a housing (200), and the oil cooling device (100) comprises a first body (101) and a second body (102), the first body (101) and the second body (102) are fixedly connected, the first body (101) forms the heat exchange medium flow channel and the oil flow channel, the second body (102) forms the first device flow channel (30), the second device flow channel (40), the connecting flow channel (50) and the main oil inlet flow channel (60), and the second body (102) is formed by the housing (200).

20. The transmission according to claim 18, characterized in that Also includes: A temperature detection component is used to detect the oil temperature in the transmission, and the temperature detection component and the oil cooling device (100) are both connected to a controller.

21. A powertrain, characterized in that: Comprising a transmission according to any one of claims 18-20.

22. A vehicle, characterized in that: Comprising the powertrain according to claim 21, or the transmission according to any one of claims 16-18.

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