Oil filtering module and transmission system

Abstract

The utility model provides an oil filtering module and a transmission system. The oil filtering module (1) comprises an oil inlet (11) and an oil outlet; the filter is used for filtering oil flowing through the oil filtering module; the electronic oil pump (20) enables the oil filtering module to suck oil to be filtered from the oil inlet (11), and the filtered oil flows out from the oil outlet after the oil is treated by the filter; and the heater (30) is used for heating the oil under the set working condition of the filtering module, so that the oil flowing into the electronic oil pump (20) has a higher temperature than the oil flowing into the electronic oil pump (20) without the heater. According to the oil filtering module, the heater is additionally arranged, and oil is heated under the set working condition, so that the flowing resistance of the oil is reduced, and the effect of reducing the pressure of a pipeline is achieved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical engineering, and particularly to an oil filtration module and a transmission system. Background Art

[0002] In the current transmission system, such as on a heavy-duty electric drive axle, under low-temperature start-up conditions, the flow resistance of the lubricating oil is relatively high, and the pipeline pressure is relatively high. If the power of the electronic oil pump is insufficient, the rear-end motor in the transmission system is prone to oil shortage, and the motor has relatively high requirements for the cleanliness of the oil. Therefore, under low-temperature start-up conditions, a relatively high-power electronic oil pump needs to be used in the oil filtration module. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an oil filtration module capable of reducing pipeline pressure under set working conditions. The purpose of the utility model is also to provide a transmission system having such an oil filtration module.

[0004] According to one aspect of the utility model, there is provided an oil filtration module, which includes: an oil inlet and an oil outlet; a filter for filtering the oil flowing through the oil filtration module; an electronic oil pump for sucking the oil to be filtered from the oil inlet by the oil filtration module, and after being processed by the filter, flowing out the filtered oil from the oil outlet; and a heater for heating the oil under the set working conditions of the oil filtration module, so that the oil flowing into the electronic oil pump has a higher temperature than when the heater is not provided.

[0005] Through this arrangement, a heater is added to the oil filtration module to heat the oil under the set working conditions of the oil filtration module, reducing the flow resistance of the oil and achieving low pressure drop and high efficiency.

[0006] In an exemplary embodiment, the oil filtration module includes a module base, and both the oil inlet and the oil outlet are arranged on the module base. Among them, a filter installation part for installing the filter, an electronic oil pump installation part for installing the electronic oil pump, and a heater installation part for installing the heater are arranged on the module base.

[0007] Through this arrangement, the oil filtration module integrates multiple installation parts on the module base, with a compact structure and small occupied space.

[0008] In an exemplary embodiment, the heater installation part is arranged adjacent to the electronic oil pump installation part, so that the heater is close to the electronic oil pump in position.

[0009] With this arrangement, the heater of the oil filtration module is positioned close to the electronic oil pump in terms of location. Under the set operating conditions of the oil filtration module, the oil heated by the heater flows into the electronic oil pump through a shorter path, reducing the resistance of oil flow and achieving low pressure drop and high efficiency.

[0010] In an exemplary embodiment, the filter is a fine filter located downstream of the electronic oil pump, and the oil filtration module further includes a coarse filter located upstream of the electronic oil pump. Wherein, the heater is located downstream of the oil inlet and upstream of the coarse filter, so that the oil heated by the heater and then filtered by the coarse filter flows into the electronic oil pump.

[0011] With this arrangement, the heater of the oil filtration module is arranged at an appropriate position in the oil filtration module, achieving a reasonable layout. At the same time, the heated and filtered oil flows into the electronic oil pump, achieving low pressure drop and high efficiency.

[0012] In an exemplary embodiment, a part of the heater mounting portion is in contact with the dirty side area of the coarse filter, so that the heater directly heats the oil in the dirty side area.

[0013] With this arrangement, the heated oil directly flows to the dirty side area of the coarse filter, achieving low pressure drop and high efficiency. At the same time, the overall structure of the oil filtration module is optimized, making it easy to maintain.

[0014] In an exemplary embodiment, the module base further includes one or more oil cooler mounting portions, and the oil filtration module further includes one or more oil coolers mounted on the one or more oil cooler mounting portions. The one or more oil coolers are arranged downstream of the fine filter to adjust the temperature of the filtered oil.

[0015] With this arrangement, by using one or more oil coolers to adjust the temperature of the filtered oil, the oil can be effectively cooled.

[0016] In an exemplary embodiment, the one or more oil cooler mounting portions are located on the first side of the module base, and the heater mounting portion is located on the second side of the module base opposite to the first side.

[0017] With this arrangement, the oil cooler mounting portion and the heater mounting portion make rational use of the space of the module base of the oil filtration module, with a compact design and easy maintenance.

[0018] In an exemplary embodiment, the set operating conditions of the oil filtration module are low-temperature start-up conditions.

[0019] With this arrangement, the heater is used to heat the oil under the low-temperature startup condition of the oil filtration module, reducing the resistance of the oil flow and achieving low pressure drop and high efficiency.

[0020] In an exemplary embodiment, the heater includes a heating main body portion for heating and an interface portion for connecting to a power source; wherein, the heater mounting portion includes a heating cavity and a mounting port located at one end of the heating cavity, the heating cavity is used to accommodate the heating main body portion of the heater, and the mounting port is used to support the interface portion of the heater.

[0021] With this arrangement, the layout of the heater is optimized, facilitating the maintenance and servicing of the heater and the connection of the heater to the power source.

[0022] In an exemplary embodiment, when the oil filtration module is in the working position, the heating cavity of the heater mounting portion extends in the vertical direction, and the mounting port of the heater mounting portion is located above the heating cavity.

[0023] With this arrangement, the layout of the heater mounting portion is optimized, which is beneficial to the heat transfer of the heater in the heater mounting portion, improving the heating efficiency and effect; in addition, the mounting port is located above the heating cavity, which is very convenient for installing and replacing the heater, facilitating the maintenance and servicing of the heater, and at the same time, this arrangement makes the overall design of the oil filtration module compact.

[0024] In an exemplary embodiment, the heating main body portion of the heater includes a hollow cylindrical outer shell and one or more heating sheets located inside the outer shell, and the heating sheets are connected to the power source via the interface portion by cables for heating the oil.

[0025] With this arrangement, the layout of the heater is optimized, facilitating the maintenance and servicing of the heater, and at the same time making the overall design of the oil filtration module compact.

[0026] In an exemplary embodiment, the electronic oil pump mounting portion is located in the middle region of the module base, and the electronic oil pump mounting portion has a hollow cylindrical shape; the heater mounting portion has a hollow cylindrical shape, and the electronic oil pump mounting portion and the heater mounting portion are arranged adjacent to each other side by side; wherein, when the oil filtration module is in the working position, the central axes of both the electronic oil pump mounting portion and the heater mounting portion are positioned along the vertical direction.

[0027] With this arrangement, the electronic oil pump mounting portion and the heater mounting portion are arranged adjacent to each other side by side, rationally utilizing the space of the module base of the oil filtration module, with a compact design and easy maintenance.

[0028] In an exemplary embodiment, the one or more oil coolers include a first oil cooler and a second oil cooler. The filtered oil from the fine filter is supplied to the first oil cooler and / or the second oil cooler. The oil outlet includes a first oil outlet and a second oil outlet. The first oil cooler is in communication with the first oil outlet to supply the oil cooled by the first oil cooler to the first oil outlet, and the second oil cooler is in communication with the second oil outlet to supply the oil cooled by the second oil cooler to the second oil outlet.

[0029] With this arrangement, the oil filtration module of the present utility model can have two oil outlets, so that the lubricating oil supplied to the motor and the transmission can be processed simultaneously. In addition, since a heater is added in front of the electronic oil pump, the resistance of oil flow is reduced. Therefore, a single electronic oil pump can fully pump the lubricating oil to supply both the motor and the transmission. In other words, the heater is particularly suitable for an oil filtration module with two oil outlets.

[0030] According to another aspect of the present utility model, a transmission system is provided, including a motor and a transmission. In particular, the transmission system further includes any one of the above oil filtration modules, and the oil filtration module processes the oil supplied to the motor and / or the transmission.

[0031] In summary, the oil filtration module and the transmission system according to the present utility model can achieve the following beneficial technical effects superior to the prior art:

[0032] First, a heater is added in front of the electronic oil pump in the oil filtration module and the transmission system of the present utility model to heat the oil under the set working conditions, reducing the resistance of oil flow and solving the problem of insufficient oil supply.

[0033] Second, a heater is added in front of the electronic oil pump in the oil filtration module and the transmission system of the present utility model, solving the problem of insufficient power of the electronic oil pump, improving the efficiency of the oil pump, and reducing energy loss.

[0034] Third, a heater is added in front of the electronic oil pump in the oil filtration module and the transmission system of the present utility model, solving the problem of too high flow resistance of the lubricating oil at low temperature, and reducing the pressure of the oil pump and the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0036] Figure 1It is a schematic perspective view of an assembled oil filtration module according to an exemplary embodiment of the present utility model.

[0037] Figure 2 It is a schematic cross-sectional view of an oil filtration module according to an exemplary embodiment of the present utility model.

[0038] Figure 3 It is another schematic cross-sectional view of an oil filtration module according to an exemplary embodiment of the present utility model.

[0039] Figure 4 It is yet another schematic cross-sectional view of an oil filtration module according to an exemplary embodiment of the present utility model.

[0040] Figure 5 It is yet another schematic cross-sectional view of an oil filtration module according to an exemplary embodiment of the present utility model.

[0041] Figure 6 It is a schematic block diagram of the oil circuit of a transmission system according to an exemplary embodiment of the present utility model.

[0042] Figure 7 It is a schematic block diagram of the water circuit of a transmission system according to an exemplary embodiment of the present utility model.

[0043] Figure 8 It is a schematic block diagram of the oil circuit of an oil filtration module according to an exemplary embodiment of the present utility model.

[0044] Among them, the reference numerals are as follows:

[0045] 1. Oil filtration module

[0046] 10. Module base

[0047] 11. Oil inlet

[0048] 12. Electronic oil pump installation part

[0049] 13. Heater installation part

[0050] 131. Heating chamber

[0051] 132. Installation port

[0052] 14. First oil outlet

[0053] 15. Second oil outlet

[0054] 20. Electronic oil pump

[0055] 30. Heater

[0056] 31. Heating main body part

[0057] 32. Interface section

[0058] 311. Heating sheet

[0059] 40. Coarse filter

[0060] 50. Fine filter

[0061] 60. First oil cooler

[0062] 70. Second oil cooler

[0063] 80. Solenoid valve

[0064] 90. Oil pan

[0065] 91. Transmission

[0066] 92. Motor

[0067] 93. Water pump

[0068] 94. Motor cooler

[0069] 95. Reducer cooler Detailed implementation manners

[0070] Next, the technical solutions in the embodiments of the present application will be described in detail with reference to the accompanying drawings in the embodiments of the present application.

[0071] First, please refer to Figure 1 and Figure 2 , which respectively show a schematic perspective view and a schematic cross-sectional view of an oil filtration module according to an exemplary embodiment of the present invention. An oil filtration module may mainly include: a module base 10, a filter, an electric oil pump 20, a heater 30, etc. The module base 10 has an oil inlet 11 for inputting the oil to be filtered and an oil outlet for outputting the filtered oil, and has a filter installation part, an electric oil pump installation part 12, and a heater installation part 13.

[0072] The filter is installed in the filter installation part and is used for filtering the oil flowing through the oil filtration module. The filter may include one filter or multiple filters. Referring to Figure 2 , in this embodiment, the filter may include a coarse filter 40 and a fine filter 50. The electric oil pump 20 is arranged between the coarse filter 40 and the fine filter 50, downstream of the coarse filter 40 and upstream of the fine filter 50.

[0073] Referring to Figure 2 , the electric oil pump 20 is arranged in the electric oil pump installation part 12, so that the oil filtration module sucks the oil to be filtered from the oil inlet 11, and after being processed by the filter, the filtered oil flows out from the oil outlet.

[0074] Refer to Figure 3 Figure 3 , the heater 30 is used to heat the oil under the set working conditions of the oil filtration module, so that the oil flowing into the electric oil pump 20 has a higher temperature than when the heater is not provided. The set working conditions are, for example, low-temperature start-up conditions. Specifically, the heater 30 is arranged in the heater installation part 13. The heater 30 is located downstream of the oil inlet 11 and upstream of the coarse filter 40, and is used to heat the oil to be filtered. It can be understood that after the heater 30 heats the lubricating oil, the fluidity of the lubricating oil becomes better, the flow resistance is reduced, so that the suction force required for oil supply is reduced, and the problem of insufficient power of the electric oil pump that may exist in the prior art is solved.

[0075] Refer to Figure 3 Figure 3 , the heater 30 includes a heating main body part 31 for heating and an interface part 32 for connecting to a power source. The heater installation part 13 includes a heating cavity 131 and an installation port 132 located at one end of the heating cavity 131. The heating cavity 131 is used to accommodate the heating main body part 31 of the heater 30, and the installation port 132 is used to support the interface part 32 of the heater 30.

[0076] When the oil filtration module is in the working position, that is Figure 3 In the position shown in Figure 3 , the heating cavity 131 of the heater installation part 13 extends along the vertical direction, and the installation port 132 of the heater installation part 13 is located above the heating cavity 131. It should be noted here that the installation port 132 of the heater installation part 13 and the interface part 32 of the heater 30 are assembled in a sealed manner. A sealing ring, for example, two sealing rings, can be arranged between the installation port 132 and the interface part 32 of the heater 30.

[0077] The heating main body part 31 of the heater 30 includes a hollow cylindrical outer shell and one or more heating sheets 311 located inside the outer shell (refer to Figure 4 ), and the heating sheets are connected to the power source through cables to heat the oil to be filtered. It can be understood that the heater 30 can be any type of heating device suitable for heating lubricating oil.

[0078] Refer to Figure 4 Figure 4 , the heating cavity 131 of the heater installation part 13 is directly communicated with the dirty side area of the coarse filter 40 to directly supply the heated oil to the dirty side area, and then the coarse filter 40 filters it.

[0079] Refer to Figure 3, the electronic oil pump mounting portion 12 is located in the middle area of the module base 10, and the electronic oil pump mounting portion 12 has a hollow cylindrical shape. The heater mounting portion 13 has a hollow cylindrical shape to form a cylindrical heating chamber 131, and the electronic oil pump mounting portion 12 and the heater mounting portion 13 are arranged adjacent to each other side by side.

[0080] When the oil filtration module is in the working position, the central axis of the electronic oil pump mounting portion 12 and the central axis of the heater mounting portion 13 are both positioned along the vertical direction. The interface portion 32 of the heater 30 extends angularly from the heating main body portion 31 in a direction away from the electronic oil pump 20, and the extending direction is substantially perpendicular to the direction of the vertical central axis of the heating main body portion 31.

[0081] Refer to Figure 3 , the heater mounting portion 13 can utilize the space surrounded by the cylindrical side wall to form a cylindrical heating chamber 131. The electronic oil pump mounting portion 12 can utilize the space surrounded by the cylindrical side wall to receive the electronic oil pump 20. The filter mounting portion, the electronic oil pump mounting portion, and the heater mounting portion can be integrally formed. Thus, the oil filtration module of the present utility model is highly integrated, reducing the overall occupied space of the oil filtration module, and at the same time, the structure is strong and durable.

[0082] The module base 10 further includes one or more oil cooler mounting portions, and the oil filtration module further includes one or more oil coolers mounted on the one or more oil cooler mounting portions. The oil coolers are arranged downstream of the fine filter 50. For example, refer to Figure 4 , the oil coolers can include a first oil cooler 60 and a second oil cooler 70, and the filtered oil from the fine filter 50 is supplied to the first oil cooler 60 and / or the second oil cooler 70.

[0083] Refer to Figure 3 and Figure 4 , both the first oil cooler 60 and the second oil cooler 70 are located on the first side of the module base 10, and the heater mounting portion 13 is located on the second side of the module base 10 opposite to the first side.

[0084] Refer to Figure 1 , the oil outlet includes a first oil outlet 14 and a second oil outlet 15. The first oil cooler 60 is communicated with the first oil outlet 14 to supply the oil cooled by the first oil cooler 60 to the first oil outlet 14, and the second oil cooler 70 is communicated with the second oil outlet 15 to supply the oil cooled by the second oil cooler 70 to the second oil outlet 15. The first oil outlet 14 can be configured to be connected to the motor 92, and the second oil outlet 15 can be configured to be connected to the transmission 91. The oil filtration module 1 can include a solenoid valve 80, and the solenoid valve can control the proportion of oil supply to the first oil cooler 60 and the second oil cooler 70.

[0085] Reference Figure 2 Referring to Figure 2 , the coarse filter 40 can be a tubular filter element with sieve holes. The tubular filter element extends along a first axial direction in the module base 10. The fine filter 50 can be a pressure filter element including multiple layers of filter media. The pressure filter element extends along a second axial direction in the module base 10. The first axial direction and the second axial direction are parallel to each other, and the first axial direction and the second axial direction can be horizontal extension directions.

[0086] Reference Figure 4 It can be seen that the first axial direction is perpendicular to the direction of the vertical central axis of the heater mounting portion 13. At least part of the outer circumference (i.e., the dirty side area) of the tubular filter element serving as the coarse filter 40 is located in the bottom area of the heating chamber 131 of the heater mounting portion 13, so that the heated oil directly flows into at least part of the outer circumference of the tubular filter element.

[0087] According to another aspect of the present invention, a transmission system is also provided. The transmission system can include a motor and a gearbox. In particular, the transmission system further includes an oil filtration module of the above-mentioned type, and the oil filtration module processes the oil supplied to the motor and / or the gearbox.

[0088] To more clearly understand the solution of the present invention, the oil circuit and the water circuit of the transmission system of the present invention will be briefly described below with reference to Figures 6 to 8 , and the oil circuit of the oil filtration module will be briefly described. Figures 6 to 8 Referring to Figures 6 to 8 , the lubricating oil flows from the oil pan 90 into the oil filtration module 1, and then flows into the motor 92 and the gearbox 91 respectively to lubricate the motor 92 and the gearbox 91, and finally the lubricating oil returns to the oil pan 90.

[0089] Reference Figure 6 Referring to Figure 6 , the water pump 93 pumps water into the motor cooler 94, then into the reducer cooler 95, and finally returns to the water pump 93. It can be understood that the motor cooler 94 is a water circuit channel in the first oil cooler 60, and the reducer cooler 95 is a water circuit channel in the second oil cooler 70.

[0090] Reference Figure 7 Referring to Figure 7 , the lubricating oil first enters the oil inlet 11 of the oil filtration module 1, then sequentially passes through the heater 30, the coarse filter 40, the electric oil pump 20, the fine filter 50, and then enters the first oil cooler 60 and the second oil cooler 70 respectively. After being cooled by the first oil cooler 60 and the second oil cooler 70, it is respectively supplied to the motor 92 and the gearbox 91 to lubricate and cool the motor 92 and the gearbox 91.

[0091] Reference Figure 8 Referring to Figure 8 , the lubricating oil first enters the oil inlet 11 of the oil filtration module 1, then sequentially passes through the heater 30, the coarse filter 40, the electric oil pump 20, the fine filter 50, and then enters the first oil cooler 60 and the second oil cooler 70 respectively. After being cooled by the first oil cooler 60 and the second oil cooler 70, it is respectively supplied to the motor 92 and the gearbox 91 to lubricate and cool the motor 92 and the gearbox 91.

[0092] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An oil filtration module, characterized in that, The oil filtration module (1) includes: an oil inlet (11) and an oil outlet; a filter for filtering the oil flowing through the oil filtration module; an electric oil pump (20) that enables the oil filtration module to suck the oil to be filtered from the oil inlet (11), and after being processed by the filter, the filtered oil flows out from the oil outlet; and a heater (30) for heating the oil under the set operating conditions of the oil filtration module, so that the oil flowing into the electric oil pump (20) has a higher temperature than when the heater is not provided; the oil filtration module includes a module base (10), and both the oil inlet (11) and the oil outlet are arranged on the module base (10), wherein, a filter installation part for installing the filter, an electric oil pump installation part (12) for installing the electric oil pump (20), and a heater installation part (13) for installing the heater are arranged on the module base (10).

2. The oil filtration module according to claim 1, characterized in that, The heater installation part (13) is arranged adjacent to the electric oil pump installation part (12), so that the heater (30) is close to the electric oil pump (20) in position.

3. The oil filtration module according to claim 1, wherein the filter is a fine filter (50) located downstream of the electric oil pump (20), and the oil filtration module (1) further includes a coarse filter (40) located upstream of the electric oil pump (20), wherein, the heater (30) is located downstream of the oil inlet (11) and upstream of the coarse filter (40), so that the oil heated by the heater (30) and then filtered by the coarse filter (40) flows into the electric oil pump (20).

4. The oil filtration module according to claim 3, wherein Among them, a partial area of the heater installation part (13) is in contact with the dirty side area of the coarse filter (40), so that the heater (30) directly heats the oil in the dirty side area.

5. The oil filtration module according to claim 3, wherein the module base (10) further includes one or more oil cooler installation parts, and the oil filtration module (1) further includes one or more oil coolers installed on the one or more oil cooler installation parts, and the one or more oil coolers are arranged downstream of the fine filter (50) to adjust the temperature of the filtered oil.

6. The oil filtration module according to claim 5, wherein The one or more oil cooler installation parts are located on the first side of the module base (10), and the heater installation part (13) is located on the second side of the module base (10) opposite to the first side.

7. The oil filtration module according to claim 1, wherein, The set operating conditions of the oil filtration module are low-temperature start-up conditions.

8. The oil filtration module according to claim 1, wherein the heater (30) includes a heating main body part (31) for heating and an interface part (32) for connecting to a power source; Among them, the heater mounting part (13) includes a heating chamber (131) and a mounting port (132) located at one end of the heating chamber (131). The heating chamber (131) is used to accommodate the heating main body part (31) of the heater (30), and the mounting port (132) is used to support the interface part of the heater (30).

9. The oil filtration module according to claim 8, wherein, When the oil filtration module is in the working position, the heating chamber (131) of the heater mounting part (13) extends along the vertical direction, and the mounting port (132) of the heater mounting part (13) is located above the heating chamber (131).

10. The oil filtration module according to claim 8, characterized in that, The heating main body part (31) of the heater (30) includes a hollow cylindrical outer shell and one or more heating sheets (311) located inside the outer shell. The heating sheets are connected to the power supply via the interface part (32) by cables for heating the oil.

11. The oil filtration module according to claim 2, wherein The electric oil pump mounting part (12) is located in the middle area of the module base (10), and the electric oil pump mounting part (12) has a hollow cylindrical shape; The heater mounting part (13) has a hollow cylindrical shape, and the electric oil pump mounting part (12) and the heater mounting part (13) are arranged adjacent to each other side by side; Among them, when the oil filtration module (1) is in the working position, the central axes of both the electric oil pump mounting part (12) and the heater mounting part (13) are positioned along the vertical direction.

12. The oil filtration module according to claim 5, wherein The one or more oil coolers include a first oil cooler (60) and a second oil cooler (70). The filtered oil from the fine filter (50) is supplied to the first oil cooler (60) and / or the second oil cooler (70), The oil outlet includes a first oil outlet (14) and a second oil outlet (15). The first oil cooler (60) is communicated with the first oil outlet (14) to supply the oil cooled by the first oil cooler to the first oil outlet (14), and the second oil cooler (70) is communicated with the second oil outlet (15) to supply the oil cooled by the second oil cooler (70) to the second oil outlet (15).

13. A transmission system, comprising a motor (92) and a gearbox (91), characterized in that, The transmission system further includes the oil filtration module according to any one of claims 1 to 12, and the oil filtration module processes the oil supplied to the motor (92) and / or the gearbox (91).

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