Hydraulic control device, hybrid power system and vehicle

Abstract

The utility model discloses a hydraulic control device, a hybrid power system and a vehicle, the hydraulic control device comprises an oil way assembly, the oil way assembly is provided with a first branch, a second branch, a liquid supply way and a confluence cavity, the first branch is suitable for circulation of liquid with a first temperature, the second branch is suitable for circulation of liquid with a second temperature, and the confluence cavity is communicated with the first branch; the liquid supply path is suitable for being communicated with a heat dissipation area of a to-be-cooled component, the confluence cavity is used for collecting liquid of the first branch and the second branch, the confluence cavity is provided with a first inlet, a second inlet and an outlet, the first inlet is communicated with the first branch, the second inlet is communicated with the second branch, and the outlet is communicated with the liquid supply path. Compared with a traditional hydraulic system, the hydraulic control device has the advantages that oil liquid with two temperatures can be mixed in the confluence cavity and then flows to the component to be cooled through the liquid supply path, so that the heat dissipation efficiency of the component to be cooled can be greatly improved, and the working efficiency and the service life of the component to be cooled can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hybrid power systems, in particular to a hydraulic control device, a hybrid power system and a vehicle. Background Art

[0002] The hybrid power system is a feasible technical solution to solve the energy consumption and environmental pollution of automobiles at this stage. With the development of battery technology, the ability of electric driving is more important in automobile power systems than before. Hydraulic systems are usually used to meet the various power output forms and multiple platform requirements of hybrid power systems. In related technologies, the oil in the cold oil branch of the hybrid power system flows to the drive motor and bearing clutch for cooling, and the oil in the hot oil branch flows directly to the generator for cooling, and there is a connection between the cold oil branch and the hot oil branch. Since the hot oil branch can supply liquid cooling to the engine alone, the high temperature of the hot oil will affect the heat dissipation efficiency of the generator, thereby affecting the working efficiency and service life of the generator. 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 a hydraulic control device, in which low-temperature oil mixed with hot oil and cold oil flows to the components to be cooled, which can greatly improve the heat dissipation efficiency of the components to be cooled and ensure the working efficiency and service life of the components to be cooled.

[0004] Another object of the present invention is to provide a hybrid power system including the hydraulic control device.

[0005] Another object of the present invention is to provide a vehicle including the hybrid power system.

[0006] According to the hydraulic control device of the first aspect of the utility model, the hydraulic control device includes: a liquid circuit component, the liquid circuit component has: a first branch is cold, suitable for circulating liquid at a first temperature; a second branch is hot, suitable for circulating liquid at a second temperature; a liquid supply liquid circuit, suitable for communicating with the heat dissipation area of ​​the component to be cooled; and a confluence chamber, used to collect liquids in the first branch and the second branch, the confluence chamber has a first inlet, a second inlet and an outlet, the first inlet is connected to the first branch, the second inlet is connected to the second branch, and the outlet is connected to the liquid supply liquid circuit.

[0007] According to the hydraulic control device of the embodiment of the utility model, the first inlet of the confluence chamber is connected to the first branch, the second inlet of the confluence chamber is connected to the second branch, and the outlet of the confluence chamber is connected to the liquid supply path. Therefore, compared with the traditional hydraulic system, the oils of two temperatures can be mixed in the confluence chamber and then flow to the components to be cooled through the liquid supply path, thereby greatly improving the heat dissipation efficiency of the components to be cooled, and further ensuring the working efficiency and service life of the components to be cooled.

[0008] According to some embodiments of the present invention, the liquid circuit assembly includes a cooler arranged on the first branch, and the first temperature is lower than the second temperature.

[0009] According to some embodiments of the utility model, the inlet direction of the first inlet is a first direction, and the inlet direction of the second inlet is a second direction; a guide wall is provided in the confluence cavity, the guide wall extends along the first direction, and the guide wall and the second inlet are arranged sequentially in the second direction.

[0010] According to some embodiments of the present invention, the second inlet, the guide wall and the outlet are arranged in sequence in the second direction.

[0011] According to some embodiments of the present invention, one end of the guide wall adjacent to the first inlet in the first direction is flush with one end of the second inlet adjacent to the first inlet; or one end of the guide wall adjacent to the first inlet in the first direction protrudes out from one end of the second inlet adjacent to the first inlet.

[0012] According to some embodiments of the utility model, the liquid circuit assembly also has: an oil suction branch, one end of which is connected to the oil pan; a low-pressure oil circuit, one end of which is connected to the other end of the oil suction branch, and the other end of the low-pressure oil circuit is respectively connected to the second branch and a cooler, the second branch is suitable for connecting to the oil pan through the low-pressure oil circuit, and the first branch is suitable for connecting to the oil pan through the cooler and the low-pressure oil circuit in sequence.

[0013] According to some embodiments of the utility model, the hydraulic control device also includes: a relief valve, the oil inlet and feedback end of the relief valve are connected to the low-pressure oil circuit, and the oil outlet of the relief valve is connected to the oil pan; and / or a pressure differential check valve, the oil inlet of the pressure differential check valve is connected to the oil suction branch, and the oil outlet of the pressure differential check valve is connected to the low-pressure oil circuit.

[0014] According to some embodiments of the present utility model, the hydraulic control device further includes: an electronic pump, which is respectively connected to the oil suction branch and the low-pressure oil circuit.

[0015] According to some embodiments of the utility model, the hydraulic control device also includes: a bypass valve, the oil inlet of the bypass valve is connected to the low-pressure oil circuit, and the oil outlet of the bypass valve is connected to the second branch; and / or a flow valve, the oil inlet of the flow valve is connected to the liquid supply circuit, and the oil outlet of the flow valve is suitable for connecting to the drive motor.

[0016] The hybrid power system according to the second aspect of the present invention comprises the hydraulic control device according to the first aspect of the present invention.

[0017] A vehicle according to an embodiment of the third aspect of the utility model comprises a hybrid power system according to an embodiment of the second aspect of the utility model.

[0018] 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

[0019] 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:

[0020] Figure 1 is a schematic diagram of a hydraulic control device according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 An exploded view of the hydraulic control assembly shown;

[0022] Figure 3 yes Figure 1 A schematic diagram of a first oil circuit board, a partition plate, and a second oil circuit board of a hydraulic control device shown;

[0023] Figure 4 yes Figure 1 A partial cross-sectional view of the hydraulic control device shown;

[0024] Figure 5 is a schematic diagram of a first oil circuit board of a hydraulic control device according to an embodiment of the utility model;

[0025] Figure 6 is a schematic diagram of a second oil circuit board of a hydraulic control device according to an embodiment of the utility model;

[0026] Figure 7 is a schematic diagram of a hydraulic control device and an oil cooler according to an embodiment of the utility model;

[0027] Figure 8 is a partial enlarged view of a hydraulic control device according to an embodiment of the utility model;

[0028] Fig. 9 It is a schematic diagram of a hydraulic control device according to an embodiment of the utility model.

[0029] Reference numerals:

[0030] 100: Hydraulic control device;

[0031] 1: first oil circuit board; 11: second branch; 12: liquid supply circuit; 13: low-pressure oil circuit; 14: first mounting hole; 15: oil suction branch; 16: high-pressure oil circuit; 17: first bearing; 18: third mounting hole; 19: sixth mounting hole; 111: seventh mounting hole; 112: ninth mounting hole; 113: suction filter hole; 114: second mounting hole; 115: guide wall;

[0032] 2: Second oil circuit board; 21: First branch; 23: Driving motor oil port; 24: Pump body oil inlet; 25: Pump body oil outlet; 26: Fifth mounting hole; 27: Clutch oil port; 28: Eighth mounting hole; 29: Generator oil port; 211: Tenth mounting hole; 212: Eleventh mounting hole; 213: Cooler oil inlet; 214: Cooler oil outlet; 215: Fourth mounting hole; 3: Bypass valve; 4: Flow valve; 5: Mechanical pump; 6: Second pump body; 61: pump wheel; 62: second bearing; 7: suction filter; 8: control valve; 9: pressure regulating valve; 10: overflow valve; 20: clutch proportional valve; 30: first buffer; 40: third buffer; 50: switch valve; 60: safety valve; 70: differential pressure check valve; 80: second check valve; 90: partition; 110: wiring harness assembly; 120: second buffer; 130: first inlet; 140: second inlet; 150: outlet; 160: confluence chamber;

[0033] 200: cooler; 300: oil pan; 400: filter press. DETAILED DESCRIPTION

[0034] Reference below Figure 1-Figure 9 The hydraulic control device 100 according to the embodiment of the present invention is described, wherein the application of the hydraulic control device 100 to a hybrid power system of a vehicle is taken as an example for illustration.

[0035] like Figure 1-Figure 9 As shown, the hydraulic control device 100 according to the first embodiment of the utility model includes: a hydraulic circuit component.

[0036] Specifically, the liquid circuit assembly has a first branch 21, a second branch 11, a liquid supply liquid circuit 12 and a confluence chamber 160. The first branch 21 is suitable for circulating liquid at a first temperature, the second branch 1 is suitable for circulating liquid at a second temperature, the liquid supply liquid circuit 12 is suitable for connecting with the heat dissipation area of ​​the component to be cooled, and the confluence chamber 160 is used to collect the liquids of the first branch 11 and the second branch 21. The confluence chamber 160 has a first inlet 130, a second inlet 140 and an outlet 150. The first inlet 130 is connected to the first branch 11, the second inlet 140 is connected to the second branch 21, and the outlet 150 is connected to the liquid supply liquid circuit 12.

[0037] For example, in Figure 1-Figure 9 In the example, the oil inlet of the second branch 11 can be connected to the oil pan 300, the first branch 21 can be connected to the filter press 400, the oil inlet of the cooler 200 is connected to the oil pan 300, the liquid supply liquid circuit 12 is connected to the first branch 21 and the second branch 11 through the confluence chamber 160, and the other end of the liquid supply liquid circuit 12 can be respectively connected to the heat dissipation areas of the drive motor, rear box bearing, generator, front box bearing, shaft gear, clutch and clutch solenoid valve waiting for cooling components. When the hydraulic control device 100 is working, a part of the oil at the second temperature in the oil basin 300 flows to the second branch 11 through the first oil port, and then flows to the confluence chamber 160 through the second branch 11 and the second inlet 140. Another part of the oil at the second temperature in the oil basin 300 is converted into oil at the first temperature and flows to the first branch 21 through the filter press 400, and then flows to the confluence chamber 160 through the first branch 21 and the first inlet 130. The oils at the two temperatures are mixed in the confluence chamber 160 and flow to the liquid supply path 12 through the outlet 150 to reduce the temperature of the oil in the liquid supply path 12, thereby increasing the temperature difference between the components to be cooled (i.e., the above-mentioned drive motor, rear box bearing, generator, front box bearing, shaft gear, clutch and clutch solenoid valve) and the oil in the liquid supply path 12, thereby improving the heat dissipation efficiency.

[0038] In the related art, the oil in the cold oil branch of the hybrid system flows to the drive motor and bearing clutch for cooling, and the oil in the hot oil branch flows directly to the generator for cooling, and there is a connection between the cold oil branch and the hot oil branch. Since the hot oil branch can supply liquid cooling to the engine alone, the high temperature of the hot oil will affect the heat dissipation efficiency of the generator, thereby affecting the working efficiency and service life of the generator. In other words, the oil in the cold oil branch and the hot oil branch will not be completely mixed.

[0039] However, the oil at the first temperature and the oil at the second temperature in the present application need to first flow into the confluence chamber 160, and the two oils of different temperatures are mixed in the confluence chamber 160, and the mixed oil flows to the heat dissipation area of ​​the components to be cooled (i.e., the above-mentioned drive motor, rear box bearing, generator, front box bearing, shaft gear, clutch and clutch solenoid valve) for heat dissipation.

[0040] According to the hydraulic control device 100 of the embodiment of the utility model, the first inlet 130 of the confluence chamber 160 is connected to the first branch 11, the second inlet 140 of the confluence chamber 160 is connected to the second branch 21, and the outlet 150 of the confluence chamber 160 is connected to the liquid supply path 12. Therefore, compared with the traditional hydraulic system, the oils of two temperatures can be mixed in the confluence chamber 160 and then flow to the components to be cooled through the liquid supply path 12, thereby greatly improving the heat dissipation efficiency of the components to be cooled, and further ensuring the working efficiency and service life of the components to be cooled.

[0041] According to some embodiments of the present invention, the fluid circuit assembly includes a cooler 200, such as an oil cooler, disposed on the first branch 11, and the first temperature is lower than the second temperature. Figure 7 As shown, the first branch 11 is connected to the oil outlet of the cooler 200, such as the oil cooler, through the filter press 400, and the oil inlet of the cooler 200, such as the oil cooler, is connected to the oil pan, so that the oil at the second temperature in the oil pan is cooled by the cooler 200, such as the oil cooler, and becomes the oil at the first temperature. The oil at the first temperature then flows to the first branch 21 and the first inlet 130 through the filter press 400 and flows to the confluence chamber 160. Thus, the temperature difference between the first temperature and the second temperature can be increased through the cooler 200, so that the temperature of the mixed oil can be reduced, and the heat dissipation efficiency of the components to be cooled can be improved.

[0042] Among them, the oil with higher temperature in the second branch is hot oil, and the oil with lower temperature in the first branch can be cold oil. Hot oil and cold oil are relative terms and there is no specific temperature value limit.

[0043] According to some embodiments of the present invention, the inlet direction of the first inlet 130 is a first direction (eg, Figure 7 The inlet direction of the second inlet 140 is the second direction (for example, Figure 7 The confluence chamber 160 is provided with a guide wall 115, which extends in the first direction, and the guide wall 115 and the second inlet 140 are sequentially arranged in the second direction. In this way, after the oil at the second temperature in the second branch 21 flows into the confluence chamber 160 through the second inlet 140, the oil at the second temperature is blocked by the guide wall and the flow velocity is slowed down, and the oil slowly flows in the first direction, so that the oil at the second temperature can be fully mixed with the oil at the first temperature.

[0044] Furthermore, if Figure 7As shown, the second inlet 140, the guide wall 115 and the outlet 150 are arranged in sequence in the second direction. That is to say, the second inlet 140, the guide wall 115 and the outlet 150 can be located on the same side of the first direction, and the first inlet 130 is located on the other side of the first direction. As a result, after the oil at the second temperature in the second branch 21 flows to the confluence chamber 160 through the second inlet 140, the oil at the second temperature will slow down the flow rate due to the obstruction of the guide wall, and slowly flow along the first direction, so that the oil at the second temperature is mixed with the oil at the first temperature, and the mixed oil turns to the outlet 150, that is, the flow path is roughly L-shaped. Before flowing out of the outlet 150, the path of the mixed oil is increased due to the existence of the corner, so that the mixed oil can be further fully mixed.

[0045] In some optional embodiments, referring to Figure 7 , in the first direction, one end of the guide wall 115 adjacent to the first inlet 130 is flush with one end of the second inlet 140 adjacent to the first inlet 130. That is, the height of the guide wall 115 in the first direction is consistent with the height of the second inlet 140 in the first direction. Such an arrangement can increase the flow path of the oil at the second temperature, further reduce the flow rate of the oil at the second temperature, and facilitate the full mixing of the two oils at different temperatures.

[0046] In some other optional embodiments, one end of the guide wall 115 adjacent to the first inlet 130 in the first direction protrudes from one end of the second inlet 140 adjacent to the first inlet 130. That is, the height of the guide wall 115 in the first direction is greater than the height of the second inlet 140 in the first direction. Such an arrangement can further increase the flow path of the oil at the second temperature, further reduce the flow rate of the oil at the second temperature, and facilitate the full mixing of the two oils at different temperatures.

[0047] According to some embodiments of the present invention, Fig. 9 As shown, the fluid circuit assembly includes a first oil circuit plate 1 and a second oil circuit plate 2, the second oil circuit plate 2 is arranged on one side of the first oil circuit plate 1 in a first direction, the first oil circuit plate 1 and the second oil circuit plate 2 jointly define a confluence cavity 160, a second inlet 140 is formed on the first oil circuit plate 1, the first oil circuit plate 1 has a guide wall 115, the guide wall 115 extends toward the direction of the second oil circuit plate 2, and a first inlet 130 is formed on the side of the second oil circuit plate 2 away from the first oil circuit plate 1.

[0048] According to some specific embodiments of the present invention, Figure 6 and Figure 7The liquid circuit assembly also has an oil suction branch 15 and a low-pressure oil circuit 13, one end of the oil suction branch 15 is connected to the oil pan 300, and one end of the low-pressure oil circuit 13 is connected to the other end of the oil suction branch 15, that is, the low-pressure oil circuit 13 is connected to the oil pan 300 through the oil suction circuit 15, and the other end of the low-pressure oil circuit 13 is respectively connected to the second branch 11 and the cooler 200, the second branch 11 is suitable for connecting to the oil pan 300 through the low-pressure oil circuit 13, and the first branch 21 is suitable for connecting to the oil pan through the oil cooler 200 and the low-pressure oil circuit 13 in turn.

[0049] It should be noted that the oil pressure in the low-pressure oil circuit 13 is relatively low, and the oil pressure in the low-pressure oil circuit 13 only needs to be sufficient to enable the oil to be transported to the component to be cooled.

[0050] like Figure 6 and Figure 7 As shown, a cooler oil inlet 213 and a cooler oil outlet 214 are formed on the second oil circuit plate 2, the oil inlet of the cooler 200 is connected to the cooler oil inlet 213, the cooler oil inlet 213 is connected to the low-pressure oil circuit 13, and the oil outlet of the cooler 200 is connected to the cooler oil outlet 214 through the filter press 400. When the hydraulic control device 100 is working, the oil in the oil basin 300 can flow to the low-pressure oil circuit 13, so that the first oil circuit plate 1 is filled with oil, part of the hot oil in the low-pressure oil circuit 13 flows to the confluence chamber 160 through the second branch 11, and another part of the hot oil in the low-pressure oil circuit 13 flows to the cooler 200 through the cooler oil inlet 213 for cooling, and the cooled cold oil flows to the confluence chamber 160 through the oil outlet of the cooler 200 and the first branch 21 of the filter press 400, and the cold oil and the hot oil are mixed and flow to the liquid supply circuit 12 to dissipate heat for subsequent components to be cooled.

[0051] Furthermore, the hydraulic control device 100 further includes a relief valve 10, which is disposed in the fifth mounting hole 26 of the second oil circuit board 2, the oil inlet and feedback end of the relief valve 10 are both connected to the low-pressure oil circuit 13, and the oil outlet of the relief valve 10 is connected to the oil pan 300. Figure 1-Figure 3 As shown, the fifth mounting hole 26 is located on one side in the width direction of the second oil circuit plate 2. The feedback end of the relief valve 10 is connected to the low-pressure oil circuit 13 through the throttle hole. The relief valve 10 can limit the pressure of the hydraulic control device 100 to ensure that the load of the low-pressure oil circuit 13 does not exceed the safety value, so that the excess oil can flow to the oil pan 300 through the relief valve 10.

[0052] like Figure 1-Figure 6As shown, the hydraulic control device 100 further includes a differential pressure check valve 70, which is disposed in the tenth mounting hole 211 of the second oil circuit board 2, the oil inlet of the differential pressure check valve 70 is communicated with the oil suction branch 15, and the oil outlet of the differential pressure check valve 70 is communicated with the low-pressure oil circuit 13. The front feedback hole of the differential pressure check valve 70 can be disposed on the partition 90 and communicated with the oil outlet of the differential pressure check valve 70. The rear feedback hole of the differential pressure check valve 70 can also be disposed on the partition 90 and communicated with the oil inlet of the relief valve 10, so as to control the opening and closing of the differential pressure check valve 70 by the pressure difference, and prevent the oil from flowing back to the relief valve 10.

[0053] According to some embodiments of the utility model, the hydraulic control device 100 further includes a bypass valve 3 and / or a flow valve 4, the bypass valve 3 is arranged in the first mounting hole 14 of the first oil circuit board 1, the oil inlet of the bypass valve 3 is connected to the low-pressure oil circuit 13, and the oil outlet of the bypass valve 3 is connected to the second branch 11, that is, the oil in the low-pressure oil circuit 13 flows to the second branch 11 through the bypass valve 3. The flow valve 4 is arranged in the second mounting hole 114 of the first oil circuit board 1, the oil inlet of the flow valve 4 is connected to the liquid supply circuit 12, and the oil outlet of the flow valve 4 is connected to the drive motor oil port 23 of the second oil circuit board 2, that is, the oil in the liquid supply circuit 12 flows to the drive motor through the flow valve 4 and the drive motor oil port 23.

[0054] Reference Figure 3 and Figure 7 The first mounting hole 14 and the second mounting hole 114 are both formed in the width direction of the first oil circuit board 1 (for example, Figure 1 The first mounting hole 14 and the second mounting hole 114 are arranged along the length direction of the first oil circuit plate 1 (for example, Figure 1 The bypass valve 3 is connected in series with the second branch 11, and the bypass valve 3 is connected in parallel with the cooler 200 and the filter press 400. The drive motor oil port 23 is connected to the drive motor so that the oil in the liquid supply liquid path 12 can flow to the drive motor, and the mixed low-temperature oil can flow to the drive motor through the drive motor oil port 23 to dissipate the heat of the drive motor. By arranging the flow valve 4 between the drive motor and the liquid supply liquid path 12, the oil flow to the drive motor can be controlled, and the heat dissipation of the drive motor can be achieved while avoiding leakage due to excessive oil in the drive motor.

[0055] Optionally, the bypass valve 3 may be composed of a valve core, a spring, a plug and a baffle. The flow valve 4 may be composed of a switch solenoid valve and a fixing bolt.

[0056] Furthermore, the hydraulic circuit assembly also has a high-pressure oil circuit 16. The hydraulic control device 100 also includes: a mechanical pump 5 and an electronic pump 6. The mechanical pump 5 is arranged on the second oil circuit board 2, and the mechanical pump 5 is connected to the oil suction branch 15 and the high-pressure oil circuit 16 respectively; the electronic pump 6 is arranged on the second oil circuit board 2, and the electronic pump 6 is connected to the oil suction branch 15 and the low-pressure oil circuit 13 respectively. Figure 2 , Figure 4 and Figure 8 As shown, a mounting cavity is formed on the second oil circuit board 2, and the mechanical pump 5 is mounted in the mounting cavity. A pump body oil inlet 24 and a pump body oil outlet 25 are formed on the second oil circuit board 2, and the pump body oil inlet 24 and the pump body oil outlet 25 are both connected to the electronic pump 6. It should be noted that the oil pressure in the high-pressure oil circuit 16 is higher than the oil pressure in the low-pressure oil circuit 15, but the oil pressure in the high-pressure oil circuit 16 ensures that the oil can drive the clutch or synchronizer and other components to engage, and maintain the engagement state to achieve transmission.

[0057] When the mechanical pump 5 is working, the mechanical pump 5 can pump the oil in the oil pan 300 to the oil suction branch 15, and the oil in the oil suction branch 15 enters the low-pressure oil suction side of the mechanical pump 5. The oil is pressed into the high-pressure side through the rotational engagement of the mechanical pump 5, and then flows to the high-pressure oil circuit 16.

[0058] Similarly, when the electronic pump 6 is working, the electronic pump 6 can pump the oil in the oil pan 300 to the oil suction branch 15, and the oil in the oil suction branch 15 flows to the electronic pump 6 through the pump body oil inlet 24, and then flows to the low-pressure oil circuit 13 through the pump body oil outlet 25. Such a configuration can greatly shorten the oil suction path, thereby reducing energy consumption, and the structure of the hydraulic control device 100 is compact.

[0059] According to some embodiments of the present invention, Figure 8 As shown, the first oil circuit board 1 is provided with a first bearing 17, and one end of the mechanical pump 5 passes through the second oil circuit board 2 and is connected to the first bearing 17. In other words, the first bearing 17 is integrated on the first oil circuit board 1 to ensure that the electronic pump 6 can rotate smoothly, and at the same time, the safety factor and service life of the mechanical pump 5 can be effectively improved. Among them, a throttle hole is formed on the first bearing 17 to control the flow of oil. Optionally, the first bearing 17 can be a needle bearing, but is not limited thereto.

[0060] According to some specific embodiments of the present invention, the mechanical pump 5 includes a pump wheel 61 and a plurality of second bearings 62. In the description of the present invention, "plurality" means two or more. The pump wheel 61 is mounted on the second oil circuit board 2, and one end of the pump wheel 61 passes through the second oil circuit board 2 and is connected to the first bearing 17. The plurality of second bearings 62 are all arranged on the second oil circuit board 2, and the plurality of second bearings 62 are respectively arranged on both sides of the axial direction of the pump wheel 61. For example, in Figure 8In the example, there are two second bearings 62, which are spaced apart along the axial direction of the pump wheel 61, and the second bearing 62 is press-fitted into the mounting cavity of the second oil circuit board 2 to support the pump wheel 61 in the mounting cavity. The pump wheel 61 is connected to the spline in the mounting cavity to transmit the rotation speed and torque. By connecting the pump wheel 61 to the first bearing 17, the safety factor of the pump wheel 61 can be effectively improved to extend the service life of the first bearing 17.

[0061] According to some embodiments of the present invention, the hydraulic control device 100 further includes a suction filter 7, which is disposed on the first oil circuit board 1 and is connected to the oil basin 300 and the oil suction branch 15 respectively. Figure 1-Figure 4 As shown, a suction filter hole 13 is formed on the first oil circuit board 1, and the suction filter hole 13 is located on one side of the length direction of the first oil circuit board 1, and the suction filter 7 is installed at the suction filter hole 13. The suction filter 7 has an oil channel, and the two ends of the oil channel are respectively connected to the oil pan 300 and the oil suction branch 15. The oil in the oil pan 300 can flow to the mechanical pump 5 and the electronic pump 6 through the oil channel and the oil suction branch of the suction filter 7. By arranging the suction filter 7 between the first oil circuit board 1 and the oil pan 300, the suction filter 7 can filter impurities in the oil, so that the oil flowing to the oil suction branch 15 is cleaner, avoiding damage to the mechanical pump 5 and the electronic pump 6.

[0062] According to some embodiments of the present invention, Figure 2 and Figure 3 As shown, the hydraulic control device 100 further includes a control valve 8 and a pressure regulating valve 9. The control valve 8 is arranged in the third mounting hole 18 of the first oil circuit board 1, and the oil inlet of the control valve 8 is connected to the high-pressure oil circuit 16. The pressure regulating valve 9 is arranged in the fourth mounting hole 215 of the second oil circuit board 2, the oil inlet of the pressure regulating valve 9 is connected to the high-pressure oil circuit 16, the control end of the pressure regulating valve 9 is connected to the oil outlet of the control valve 8, the feedback end of the pressure regulating valve 9 is connected to the high-pressure oil circuit 16, and the oil outlet of the pressure regulating valve 9 is suitable for connecting to the oil pan 300.

[0063] Reference Figure 2 and Figure 3 The third mounting hole 18 is located between the first mounting hole 14 and the second mounting hole 114, that is, the control valve 8 is located between the bypass valve 3 and the flow valve 4. The control valve 8 may include a solenoid valve body, a baffle and a fixing bolt. The fourth mounting hole 215 and the fifth mounting hole 26 are formed in the width direction of the second oil circuit board 2 (for example, Figure 3 The pressure regulating valve 9, the bypass valve 3 and the relief valve 10 are located on the same side of the width direction of the hydraulic control device 100, so that the structure of the hydraulic control device 100 is more compact. The movement of the pressure regulating valve 9 can be controlled by connecting the oil outlet of the control valve 8 to the control end of the pressure regulating valve 9. The pressure regulating valve 9 can include a valve core, a spring, a plug and a baffle.

[0064] Specifically, refer to Fig. 9 The oil in the oil pan 300 can flow to the low-pressure oil suction side of the mechanical pump 5 through the suction filter 7, and the oil is pressed into the high-pressure side through the rotational engagement of the mechanical pump 5, and then flows to the high-pressure oil circuit 16. The oil flowing out of the high-pressure oil circuit 16 flows through the control valve 8 and the pressure regulating valve 9 respectively, wherein the control end of the pressure regulating valve 9 can be adjusted by the control valve 8, and the valve core moves when the spring acts together to form an open throttling opening to maintain pressure, and the excess oil flows to the oil pan 300 through the oil outlet.

[0065] Optionally, the control valve 8 may be a pilot-operated proportional solenoid valve, but is not limited thereto.

[0066] According to some embodiments of the utility model, the hydraulic control device 100 also includes a clutch proportional valve 20, which is arranged in the sixth mounting hole 19 of the first oil circuit plate 1, the oil inlet of the clutch proportional valve 20 is connected to the high-pressure oil circuit 16, the first oil outlet of the clutch proportional valve 20 is connected to the clutch oil port 27 of the second oil circuit plate 2, and the second oil outlet of the clutch proportional valve 20 is suitable for connecting to the oil basin 300, wherein the oil inlet of the clutch proportional valve 20 can be selectively connected to one of the first oil outlet and the second oil outlet of the clutch proportional valve 20.

[0067] Reference Figure 1-Figure 3 , the sixth mounting hole 19 is located at one end of the first oil circuit board 1 away from the bypass valve 3, that is, the clutch proportional valve 20 and the bypass valve 3 are respectively located at the two ends of the length direction of the first oil circuit board 1. When the clutch is engaged, the oil inlet of the clutch proportional valve 20 is connected with the first oil outlet of the clutch proportional valve 20, so that the oil flows to the clutch through the clutch proportional valve 20 and the clutch oil port 27, ensuring that the clutch can work normally; when the clutch is released, the first oil outlet of the clutch proportional valve 20 is connected with the second oil outlet of the clutch proportional valve 20, so that the oil flowing to the clutch proportional valve 20 can flow to the oil pan 300, so that the clutch ends working.

[0068] Alternatively, the clutch proportional valve 20 may be composed of a proportional solenoid valve, a baffle and a fixing bolt.

[0069] Furthermore, if Figure 1-Figure 3 and Fig. 9As shown, the hydraulic control device 100 also includes a first buffer 30 and a second buffer (not shown in the figure). The first buffer 30 is arranged in the seventh mounting hole 111 of the first oil circuit board 1. The first buffer 30 is connected to the oil outlet of the control valve 8. Since the oil outlet of the control valve 8 is connected to the control end of the pressure regulating valve 9, the first buffer 30 can absorb the pressure fluctuation of the control end of the pressure regulating valve 9. The second buffer is arranged on the high-pressure oil circuit 16 of the first oil circuit board 1. Since the feedback end of the pressure regulating valve 9 is connected to the high-pressure oil circuit 16, the second buffer can absorb the pressure fluctuation of the feedback end of the pressure regulating valve 9. As a result, the two buffers can absorb the pressure fluctuation from the control end and the feedback end of the pressure regulating valve 9, and effectively suppress the pressure fluctuation of the hydraulic control device 100.

[0070] Furthermore, the hydraulic control device 100 further includes a third buffer 40, which is disposed in the second oil circuit board 2 and is connected to the first oil outlet of the clutch proportional valve 20 to absorb the pressure fluctuation of the clutch.

[0071] In some optional embodiments, such as Figure 1 and Figure 2 As shown, the first buffer 30, the control valve 8, the clutch proportional valve 20 and the flow valve 4 are all located on the same side of the first oil circuit board 1 away from the second oil circuit board 2, that is, the first buffer 30, the control valve 8, the clutch proportional valve 20 and the flow valve 4 are all located on one side of the thickness direction of the first oil circuit board 1. And the first buffer 30, the control valve 8, the clutch proportional valve 20 and the flow valve 4 are spaced apart along the length direction of the second oil circuit board 2. Such an arrangement can make the structure of the hydraulic control device 100 more compact, which is conducive to the miniaturization design of the hydraulic control device 100.

[0072] According to some embodiments of the present invention, referring to Figure 1-Figure 6 The hydraulic control device 100 further includes a switch valve 50 and a safety valve 60. The switch valve 50 is arranged in the eighth mounting hole 28 of the second oil circuit board 2. The oil inlet of the switch valve 50 is connected to the liquid supply circuit 12, the oil outlet of the switch valve 50 is connected to the generator oil port 29 of the second oil circuit board 2, and the control end of the switch valve 50 is connected to the oil outlet of the control valve 8. Among them, the generator oil port 29 can be connected to the generator stator liquid supply circuit 12. The switch valve 50 can be composed of a valve core, a spring, and a baffle. The opening and closing of the switch valve 50 are controlled by the combined action of the output pressure of the control valve 8 and the spring force of the switch valve 50, thereby controlling the oil flow rate flowing to the generator stator liquid supply circuit 12.

[0073] The safety valve 60 is arranged in the ninth mounting hole 112 of the first oil circuit board 1, and the oil inlet of the safety valve 60 is connected with the high-pressure oil circuit 16. The safety valve 60 can be composed of a steel ball, a spring, and a baffle. The preload force of the spring can act on the steel ball, so that the steel ball is sealed on the cone surface, ensuring that the safety valve 60 does not open when the pressure is less than the safety limit, thereby preventing the pressure of the hydraulic control device 100 from exceeding the limit and bursting.

[0074] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, the hydraulic control device 100 further includes a second one-way valve 80, which is disposed in the eleventh mounting hole 212 of the second oil circuit board 2, and the oil inlet of the second one-way valve 80 is communicated with the oil outlet of the pressure regulating valve 9, and the oil outlet of the second one-way valve 80 is communicated with the oil inlet of the relief valve 10. The feedback hole of the second one-way valve 80 is disposed on the valve core of the second one-way valve 80 and is communicated with the oil outlet of the second one-way valve 80, so as to control the opening and closing of the second one-way valve 80 by the pressure difference, and prevent the oil from flowing back to the pressure regulating valve 9.

[0075] Optionally, the differential pressure check valve 70 and the second check valve 80 may both be composed of a valve core, a spring, a plug, and a baffle.

[0076] In addition, if Figure 1 and Figure 2 As shown, the hydraulic control device 100 also includes a wiring harness assembly 110, which is composed of a terminal, a wiring harness, and a snap. The wiring harness assembly 110 is respectively connected to the control valve 8, the clutch proportional valve 20, and the flow valve 4, and the outgoing direction is kept on the same side, so that the layout is compact and the structure is simple.

[0077] A hybrid power system (not shown) according to an embodiment of the second aspect of the utility model comprises a hydraulic control device 100 according to an embodiment of the first aspect of the utility model.

[0078] According to the hybrid power system of the embodiment of the present utility model, by adopting the above-mentioned hydraulic control device 100, it is possible to ensure that the temperature of the hybrid power system is uniform, thereby preventing a certain component of the hybrid power system from being overheated.

[0079] A vehicle (not shown) according to an embodiment of the third aspect of the utility model comprises a hybrid power system according to an embodiment of the second aspect of the utility model.

[0080] The vehicle according to the embodiment of the utility model can ensure good power performance and improve market competitiveness by adopting the above-mentioned hybrid power system.

[0081] Other structures and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0082] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0083] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0084] 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 expressions of the above terms do not necessarily refer to the same embodiment or example.

[0085] 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. A hydraulic control device, characterized in that: The invention comprises a fluid circuit component, wherein the fluid circuit component has: A first branch, suitable for flowing a liquid at a first temperature; The second branch is suitable for circulating liquid at a second temperature; A liquid supply path, adapted to communicate with a heat dissipation area of ​​a component to be cooled; as well as The confluence chamber is used to collect the liquids of the first branch and the second branch. The confluence chamber has a first inlet, a second inlet and an outlet. The first inlet is connected to the first branch, the second inlet is connected to the second branch, and the outlet is connected to the liquid supply path.

2. The hydraulic control device according to claim 1, characterized in that: The fluid circuit assembly includes a cooler disposed on the first branch circuit, and the first temperature is lower than the second temperature.

3. The hydraulic control device according to claim 1, characterized in that: The entrance direction of the first entrance is a first direction, and the entrance direction of the second entrance is a second direction; A guide wall is disposed in the confluence cavity, the guide wall extends along the first direction, and the guide wall and the second inlet are sequentially disposed in the second direction.

4. The hydraulic control device according to claim 3, characterized in that: The second inlet, the guide wall and the outlet are arranged in sequence in the second direction.

5. The hydraulic control device according to claim 4, characterized in that: An end of the guide wall adjacent to the first inlet is flush with an end of the second inlet adjacent to the first inlet in the first direction; or In the first direction, one end of the guide wall adjacent to the first inlet protrudes beyond one end of the second inlet adjacent to the first inlet.

6. The hydraulic control device according to any one of claims 1 to 5, characterized in that: The fluid circuit assembly also has: An oil suction branch, one end of which is connected to the oil basin; A low-pressure oil circuit, one end of which is connected to the other end of the oil suction branch, and the other end of which is respectively connected to the second branch and the cooler, the second branch is suitable for connecting to the oil pan through the low-pressure oil circuit, and the first branch is suitable for connecting to the oil pan through the oil cooler and the low-pressure oil circuit in sequence.

7. The hydraulic control device according to claim 6, characterized in that: Also includes: A relief valve, the oil inlet and feedback end of the relief valve are both connected to the low-pressure oil circuit, and the oil outlet of the relief valve is connected to the oil pan; and / or A pressure differential one-way valve, wherein the oil inlet of the pressure differential one-way valve is connected to the oil suction branch, and the oil outlet of the pressure differential one-way valve is connected to the low-pressure oil circuit.

8. The hydraulic control device according to claim 6, characterized in that: Also includes: An electronic pump is connected to the oil suction branch and the low-pressure oil circuit respectively.

9. The hydraulic control device according to claim 6, characterized in that: Also includes: a bypass valve, wherein the oil inlet of the bypass valve is connected to the low-pressure oil circuit, and the oil outlet of the bypass valve is connected to the second branch circuit; and / or A flow valve, wherein the oil inlet of the flow valve is connected to the liquid supply path, and the oil outlet of the flow valve is suitable for connecting to the drive motor.

10. A hybrid power system, characterized in that: Comprising a hydraulic control device according to any one of claims 1-9.

11. A vehicle, characterized in that: Comprising a hybrid powertrain system according to claim 10.

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