Combined active heat dissipation device based on vehicle-mounted integrated pump station

Abstract

The invention discloses a combined active heat dissipation device and method based on a vehicle-mounted integrated pump station, belongs to the technical field of heat dissipation of hydraulic systems, and aims to solve the technical problem that the heat dissipation effect of the vehicle-mounted integrated pump station is poor due to space structure limitation. The combined active heat dissipation device comprises an oil pumping mechanism, a heat dissipation unit and an oil cooling motor. The radiating unit comprises a first radiator and a second radiator; a first oil pumping port and a first oil conveying port of the oil pumping mechanism are respectively communicated with an oil tank and the first radiator; the second oil pumping port and the second oil conveying port are respectively communicated with the oil cooling motor and the second radiator; the oil pumping mechanism can simultaneously drive oil in the oil tank and the oil cooling motor to enter the heat dissipation unit for active heat dissipation. According to the heat dissipation device and method, active heat dissipation of oil in the oil tank and the oil cooling motor can be completed under the condition that the occupied space is very small, and the normal working environment of the vehicle-mounted integrated pump station is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of heat dissipation of hydraulic systems, and relates to a combined active heat dissipation device based on a vehicle-mounted integrated pump station. BACKGROUND

[0002] The vehicle-mounted integrated pump station integrates hydraulic pumps, servo motors, oil tanks and other components together, has more compact spatial layout, simpler pipeline connection and higher structural integration degree, and has more advantages in quality and volume control of the hydraulic system.

[0003] However, the vehicle-mounted integrated pump station does not have an active heat dissipation device due to its own spatial structure limitation, so that the pump station is limited by the ambient temperature during operation, the execution element only moves a few times, the oil temperature rises obviously, and the high oil temperature will significantly change the viscosity of the oil, thereby affecting the control of the execution element and the normal use of the hydraulic equipment, and the hydraulic equipment usually needs to be stopped and then work after the oil temperature decreases. The heat dissipation device of the servo motor can only meet its own heat dissipation demand. SUMMARY

[0004] In view of the above analysis, the application aims to provide a combined active heat dissipation device based on a vehicle-mounted integrated pump station, which solves the technical problem of poor heat dissipation effect of the vehicle-mounted integrated pump station due to the spatial structure limitation.

[0005] The purpose of the application is mainly achieved through the following technical solutions.

[0006] The application provides a combined active heat dissipation device based on a vehicle-mounted integrated pump station, characterized in that the device comprises an oil pumping mechanism, a heat dissipation unit and an oil-cooled motor; the oil pumping mechanism comprises a first oil pumping end and a second oil pumping end; the first oil pumping end comprises a first oil pumping port and a first oil conveying port, and the first oil pumping port and the first oil conveying port are respectively connected with an oil tank and a first heat radiator; the second oil pumping end comprises a second oil pumping port and a second oil conveying port, and the second oil pumping port and the second oil conveying port are respectively connected with an oil-cooled motor and a second heat radiator; the oil pumping mechanism can simultaneously drive the oil in the oil tank and the oil-cooled motor to enter the heat dissipation unit for active heat dissipation.

[0007] Further, the oil pumping mechanism is a double-plunger pump.

[0008] Further, the first heat radiator and the second heat radiator each comprise at least one heat dissipation assembly.

[0009] Further, the heat dissipation assembly comprises a semiconductor refrigeration wafer and a heat conduction member, and the semiconductor refrigeration wafer is attached to the outer surface of the heat conduction member.

[0010] Further, the heat conduction member is provided with an oil cooling channel, and the flow direction of the oil cooling channel is parallel to the semiconductor refrigeration wafer.

[0011] Further, the two opposite outer surfaces of the heat-conducting member are attached with semiconductor refrigeration chips.

[0012] Further, the heat-conducting member further comprises heat-conducting fins, which divide the oil cooling channel into a plurality of honeycomb or grid-shaped channels.

[0013] Further, the material of the heat-conducting member is aluminum alloy.

[0014] Further, the double-plunger pump comprises a swash plate, and the inclination angle of the swash plate is adjustable.

[0015] Further, the double-plunger pump further comprises a plurality of plungers.

[0016] Further, the number of the plungers on the two sides of the swash plate is different.

[0017] Further, the first radiator comprises a first cool oil outlet, which is connected with the oil-cooled motor and outputs the oil liquid after one-time active cooling.

[0018] Further, the second radiator comprises a second cool oil outlet, which is connected with the oil tank and outputs the oil liquid after two-time active cooling.

[0019] Further, the oil-cooled motor is provided with a main output shaft and a vice output shaft.

[0020] Further, the oil extraction mechanism and the fan are coaxially connected to the vice output shaft and rotate synchronously.

[0021] Further, the surface of the heat-conducting member is provided with a graphene coating.

[0022] Further, the heat dissipation unit further comprises an air cooling assembly, and the air cooling assembly comprises a fan, which is located on one side of the first radiator and the second radiator.

[0023] Further, the rotating shaft of the fan is parallel to the semiconductor refrigeration chip, so that the heat on the surface of the semiconductor refrigeration chip is blown away to the air.

[0024] The second aspect of the present application provides a combined active heat dissipation method based on a vehicle-mounted integrated pump station, which adopts the combined active heat dissipation device based on the vehicle-mounted integrated pump station in any one of the first aspect to dissipate heat.

[0025] Further, the method comprises the following steps:

[0026] S1 the oil extraction mechanism continuously extracts oil liquid from the oil tank and the oil-cooled motor and respectively transports the oil liquid to the heat dissipation unit;

[0027] S2 the heat dissipation unit performs heat dissipation on the oil liquid;

[0028] S3 oil continuously flows out of the cooling unit and into the oil tank and oil-cooled motor respectively.

[0029] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0030] (1) The combined active cooling device of the present invention, by setting up an oil pumping mechanism, a first radiator and a second radiator, enables the oil pumping mechanism to simultaneously drive the oil in the oil tank and the oil-cooled motor to enter the first radiator and the second radiator respectively, thereby achieving active cooling of the oil in the oil tank and the oil-cooled motor with a very small space occupation, ensuring the normal working environment of the vehicle-mounted integrated pump station.

[0031] (2) The combined active cooling device of the present invention, by adopting a double plunger pump type oil pumping mechanism, can combine the driving components of the oil tank and the cooling system of the oil-cooled motor into one, which saves the space occupied by the driving components and reduces the power occupied by the cooling system.

[0032] (3) The combined active cooling device of the present invention, by connecting the first hot oil inlet and the first cool oil outlet to the first oil supply port and the motor return oil port respectively, and connecting the second hot oil inlet and the second cool oil outlet to the second oil supply port and the oil tank port respectively, can make full use of the oil in the oil tank to implement synchronous oil cooling heat dissipation for the oil-cooled motor, without the need for the oil-cooled motor to use other special cooling oil, and without the need for regular replacement and maintenance.

[0033] (4) The combined active heat dissipation device of the present invention, by setting up an oil tank, an oil pumping mechanism, a first radiator, an oil-cooled motor, an oil pumping mechanism, a second heat dissipation unit, and then returning to the oil circulation path of the oil tank, can enable the oil to be cooled twice, thereby ultimately achieving the effect of combined active heat dissipation of the oil in the oil tank and the oil-cooled motor. It has a compact structure, high heat dissipation efficiency, and saves the space and power occupied by the heat dissipation device.

[0034] (5) The combined active heat dissipation device of the present invention adopts a heat dissipation component that is attached to a semiconductor cooling chip and a heat-conducting component, making the structure of the vehicle integrated heat dissipation device very compact. The heat dissipation unit is lightweight, noiseless, and pollution-free, achieving the beneficial effect of high-efficiency oil cooling with a small space occupation, thus meeting the requirements of vehicle integrated heat dissipation.

[0035] (6) The combined active heat dissipation device of the present invention, by setting heat-conducting fins, can increase the contact area between the oil in the heat dissipation channel and the heat-conducting component, thereby achieving a faster heat dissipation effect.

[0036] (7) The combined active cooling device of the present invention, by coaxially connecting the oil pumping mechanism and the fan with the auxiliary output shaft, can use the same oil-cooled motor to drive three functional units at the same time, which greatly saves the space occupied by the device and realizes the high integration of the combined active cooling device of the vehicle pump station.

[0037] (8) The combined active cooling device of the present invention, by setting different numbers of plungers at both ends of the double plunger pump, can improve the circulation cooling speed of the oil in the tank while achieving combined active cooling, thereby greatly improving the cooling efficiency of the hydraulic system and making the hydraulic system suitable for operation in higher temperature environments.

[0038] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0039] Figure 1 This is one of the overall structural schematic diagrams of the combined active heat dissipation device according to Embodiment 1 of the present invention;

[0040] Figure 2 This is a second schematic diagram of the overall structure of the combined active heat dissipation device according to Embodiment 1 of the present invention;

[0041] Figure 3 This is a schematic diagram of the heat dissipation assembly according to Embodiment 1 of the present invention;

[0042] Figure 4 This is a schematic diagram of the oil pumping mechanism in Embodiment 2 of the present invention;

[0043] Figure 5 This is a schematic diagram of the overall structure of the combined active heat dissipation device according to Embodiment 2 of the present invention;

[0044] Figure 6 This is a schematic diagram of the steps of the combined active heat dissipation method in Embodiment 3 of the present invention.

[0045] Figure label:

[0046] 1-Oil pumping mechanism; 11-First oil pumping end; 111-First oil pumping port; 112-First oil delivery port; 12-Second oil pumping end; 121-Second oil pumping port; 122-Second oil delivery port; 13-Swashplate; 14-Plunger;

[0047] 2-Heat dissipation unit; 200-Heat dissipation component; 201-Semiconductor cooling chip; 202-Heat conductive component; 2021-Oil cooling channel; 2022-Heat conductive fins;

[0048] 21-First radiator; 211-First hot oil inlet; 212-First cool oil outlet; 212a-First cool oil outlet A; 212b-First cool oil outlet B;

[0049] 22-Second radiator; 221-Second hot oil inlet; 222-Second cool oil outlet; 23-Air-cooled assembly; 231-Fan;

[0050] 3-Oil-cooled motor; 31-Motor oil outlet; 32-Motor oil return port; 33-Main output shaft; 34-Auxiliary output shaft;

[0051] 4-Fuel tank; 41-Fuel tank outlet; 42-Fuel tank return port; Detailed Implementation

[0052] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0053] Example 1

[0054] This embodiment provides a combined active cooling device based on a vehicle-mounted integrated pump station, such as... Figure 1 and Figure 2 As shown, the system includes an oil pumping mechanism 1, a heat dissipation unit 2, and an oil-cooled motor 3. The heat dissipation unit 2 includes a first radiator 21 and a second radiator 22. The oil pumping mechanism 1 adopts a standard double plunger pump, including a first oil pumping end 11 and a second oil pumping end 12. The first oil pumping end 11 includes a first oil pumping port 111 and a first oil delivery port 112, and the second oil pumping end 12 includes a second oil pumping port 121 and a second oil delivery port 122. The first oil pumping port 111 and the first oil delivery port 112 are respectively connected to the oil tank 4 and the first radiator 21, and the second oil pumping port 121 and the second oil delivery port 122 are respectively connected to the oil-cooled motor 3 and the second radiator 22. The oil pumping mechanism 1 can simultaneously drive the oil in the oil tank 4 and the oil-cooled motor 3 into the heat dissipation unit 2 for active cooling.

[0055] The combined active cooling device in this embodiment, by setting up an oil extraction mechanism 1, a first radiator 21, and a second radiator 22, allows the oil extraction mechanism 1 to simultaneously drive the oil in the oil tank 4 and the oil-cooled motor 3 into the first radiator 21 and the second radiator 22 respectively. This achieves active cooling of the oil in the oil tank 4 and the oil-cooled motor 3 within a very small space, ensuring the normal operating environment of the vehicle-mounted integrated pump station. Furthermore, by employing a dual-plunger pump-type oil extraction mechanism 1, this embodiment integrates the drive components of the cooling systems for the oil tank 4 and the oil-cooled motor 3 into one unit, enabling synchronous driving of the oil in the first radiator 21 and the second radiator 22. This saves space occupied by the drive components and reduces the power consumption of the cooling system.

[0056] For example, such as Figure 2 As shown, the oil tank 4 is connected to the hydraulic pump of the vehicle-mounted integrated hydraulic system, which can provide the required oil for the hydraulic system. The oil tank 4 is also provided with an oil tank outlet 41 and an oil tank return port 42. The oil tank outlet 41 is connected to the first oil extraction port 111, which is used to input the hot oil in the oil tank 4 into the combined active cooling device of this embodiment to complete the active cooling of the oil. The output shaft of the oil-cooled motor 3 is connected to the hydraulic pump to provide power to the hydraulic pump. The oil-cooled motor 3 in this embodiment is an oil-cooled servo motor, which is provided with a motor outlet 31 and a motor return port 32. The motor outlet 31 is connected to the second oil extraction port 12, which is used to input the hot oil in the oil-cooled motor 3 into the combined active cooling device of this embodiment to complete the active cooling of the oil.

[0057] Furthermore, such as Figure 2 As shown, the first radiator 21 is used for the first active cooling of the oil, including a first hot oil inlet 211 and a first cool oil outlet 212. The first hot oil inlet 211 and the first cool oil outlet 212 are respectively connected to the first oil delivery port 112 and the motor oil return port 32. Driven by the oil extraction mechanism 1, the hot oil extracted from the oil tank outlet 41 is output through the first oil delivery port 112 and flows into the first radiator 21 for active cooling from the first hot oil inlet 211. This portion of the actively cooled oil flows out through the first cool oil outlet 212 and then flows into the oil cooling heat dissipation channel of the oil-cooled motor 3 from the motor oil return port 32. Among them, a portion of the cool oil enters the stator cooling channel of the oil-cooled motor 3 to dissipate heat from the stator and the housing of the oil-cooled motor 3, and a portion of the cool oil enters the rotor area of ​​the oil-cooled motor 3 to dissipate heat from the rotating parts of the oil-cooled motor 3. After exchanging heat with the internal structure of the oil-cooled motor 3, the oil enters the oil return area of ​​the oil-cooled motor 3 and flows out through the motor oil outlet 31.

[0058] Furthermore, such as Figure 2As shown, the second radiator 22 is used for the second active cooling of the oil, including a second hot oil inlet 221 and a second cool oil outlet 222; the second hot oil inlet 221 and the second cool oil outlet 222 are respectively connected to the second oil inlet 122 and the oil tank outlet 32. Driven by the oil pumping mechanism 3, the hot oil drawn from the motor outlet 31 is output through the second oil inlet 122 and flows into the second radiator 22 from the second hot oil inlet 221 for the second active cooling. This portion of cool oil that has completed the second active cooling flows out through the second cool oil outlet 222 and flows back to the oil tank 4 from the oil tank return outlet 42.

[0059] The combined active cooling device of this embodiment, by connecting the first hot oil inlet 211 and the first cool oil outlet 212 to the first oil supply port 112 and the motor oil return port 32 respectively, and simultaneously connecting the second hot oil inlet 221 and the second cool oil outlet 222 to the second oil supply port 122 and the oil tank port 32 respectively, can fully utilize the oil in the oil tank 4 to synchronously cool the oil-cooled motor 3, eliminating the need for the oil-cooled motor 3 to use a separate special cooling oil, and thus eliminating the need for periodic replacement and maintenance; at the same time, this embodiment, by setting up the oil tank 4 and the oil extraction mechanism, can achieve the same effect. 1. The first radiator 21, oil-cooled motor 3, oil pumping mechanism 1, and second cooling unit 22 return to the oil circulation path of the oil tank 4, enabling secondary cooling of the oil. This achieves a combined active cooling effect for the oil in the oil tank 4 and the oil-cooled motor 3, resulting in a compact structure, high cooling efficiency, and saving space and power occupied by the cooling device. Furthermore, since the oil pumping mechanism 1 actively cools the oil in the oil tank 4, there is no need to wait for the hydraulic system to return oil during passive cooling, which improves the cooling efficiency and continuously ensures a stable working environment for the hydraulic system.

[0060] Furthermore, such as Figure 3 As shown, both the first heat sink 21 and the second heat sink 22 include at least one set of heat dissipation components 200. Each heat dissipation component 200 includes a thermoelectric cooling chip 201 and a heat-conducting element 202. The cooling end of the thermoelectric cooling chip 201 is attached to the outer surface of the heat-conducting element 202. Preferably, the heat-conducting element 202 is a cuboid, and the thermoelectric cooling chip is attached to both opposite outer surfaces of the cuboid heat-conducting element 202. An oil-cooling channel 2021 is provided inside the heat-conducting element 202, and the flow direction of the oil-cooling channel 2021 is parallel to that of the thermoelectric cooling chip 201. The two ends of the oil-cooling channel 2021 in the first heat sink 21 and the second heat sink 22 are respectively connected to a first hot oil inlet 211 and a first hot oil outlet 212, a second hot oil inlet 221, and a second hot oil outlet 222. The heat-conducting element 202 is made of aluminum alloy with high thermal conductivity. Preferably, the surface of the heat-conducting element 202 is also coated with a graphene coating, which can further improve the thermal conductivity of the heat-conducting element 202.

[0061] When the oil flows through the oil cooling channel 2021, it comes into contact with the channel surface of the heat-conducting component 202. The heat of the oil is transferred to the heat-conducting component 202 through thermal conduction. Since the surface of the heat-conducting component 202 has a graphene coating, its thermal conductivity is further enhanced, allowing heat to be rapidly transferred to its outer surface. Because the outer surface of the heat-conducting component 202 is covered with a semiconductor cooling chip 201, and the semiconductor cooling chip 201 has a cooling effect when powered on, the temperature difference between the surface of the cooling end of the semiconductor cooling chip 201 and the heat-conducting component 202 is increased. This further accelerates the heat transfer process from the heat-conducting component 202 to the semiconductor cooling chip 201, allowing the heat-conducting component 202 to further absorb heat from the oil. Finally, the heat is dissipated from the heating end of the semiconductor cooling chip into the outside air, completing the heat dissipation process of the oil in the heat dissipation unit 2.

[0062] This embodiment employs a heat dissipation assembly 200 with a semiconductor cooling chip 201 and a heat-conducting component 202 bonded together. This results in a highly compact structure for the integrated vehicle cooling device. The heat dissipation unit 2 is lightweight, noiseless, and pollution-free, achieving efficient oil cooling within a small footprint, thus meeting the requirements of integrated vehicle cooling. Furthermore, since the semiconductor cooling chip 201 is based on the Seebeck and Pilz effects, it generates a temperature difference and heat on the semiconductor material using DC voltage to achieve a cooling effect. Compared to conventional fan cooling or air conditioning cooling devices, it offers better heat dissipation while avoiding condensation that could contaminate the oil.

[0063] To further improve the heat dissipation rate of the oil in the oil cooling channel 2021, such as Figure 3 As shown, the heat-conducting component 202 also includes heat-conducting fins 2022. Multiple heat-conducting fins 2022 are arranged along the oil flow direction within the oil cooling channel 2021. The heat-conducting fins 2022 are fixed to the inner wall of the heat-conducting component 202. Preferably, the heat-conducting fins 2022 are made of the same material as the heat-conducting component 202 and are integrally formed with it. The heat-conducting fins 2022 increase the contact area between the oil in the heat dissipation channel 1122 and the heat-conducting component 202, achieving a faster heat dissipation effect.

[0064] For example, such as Figure 3 As shown, multiple heat-conducting fins 2022 divide the oil cooling channel 2021 into multiple honeycomb or grid-like channels. The multiple honeycomb or grid-like oil cooling channel 2021 structure allows the heat-conducting fins 2022 to have a larger surface area, enabling the oil to have more sufficient contact with the heat-conducting fins 2022 and achieving a faster heat dissipation speed.

[0065] Optionally, the first heat sink 21 and the second heat sink 22 may be provided with multiple sets of heat dissipation components 200. The multiple sets of heat dissipation components 200 are arranged in parallel with each other, and there is a gap between the semiconductor cooling wafers 201 of two adjacent sets of heat dissipation components 200 so that the heat-generating end of the semiconductor cooling wafer 201 can transfer heat to the surrounding air.

[0066] In order to dissipate the heat around heat dissipation unit 2 as quickly as possible, such as Figure 1 and Figure 2 As shown, the heat dissipation unit 2 also includes an air cooling component 23, which includes a fan 231. The fan 231 is located on one side of the first heat sink 21 and the second heat sink 22. The rotation axis of the fan 231 is parallel to the semiconductor cooling chip 201, thereby blowing the heat on the surface of the semiconductor cooling chip 201 into the air.

[0067] Furthermore, such as Figure 2 As shown, the oil-cooled motor 3 has a main output shaft 33 and an auxiliary output shaft 34 at its two ends. The main output shaft 33 is used to drive the hydraulic pump, and the auxiliary output shaft 34 is used for the oil pumping mechanism 1 and the fan 231. The oil pumping mechanism 1 and the fan 231 are coaxially connected on the auxiliary output shaft 34. The fan 231 is located at the end of the auxiliary output shaft 34 so that the fan blade of the fan 231 is adjacent to the first radiator 21 and the second radiator 22, so as to provide air cooling for the first radiator 21 and the second radiator 22.

[0068] When the oil-cooled motor 3 is working, the auxiliary output shaft 34 rotates synchronously with the main output shaft 33, causing the auxiliary output shaft 34 to drive the oil pumping mechanism 1 and the fan 231 to work synchronously. In this embodiment, by coaxially connecting the oil pumping mechanism 1 and the fan 231 with the auxiliary output shaft 34, the same oil-cooled motor 3 can drive three functional units simultaneously, which greatly saves the space occupied by the device and realizes a high degree of integration of the combined active cooling device of the vehicle-mounted pump station.

[0069] Example 2

[0070] The combined active cooling device based on the vehicle-mounted integrated pump station in this embodiment differs from that in Embodiment 1 in that the oil pumping mechanism 1 uses a different dual plunger pump than that in Embodiment 1.

[0071] like Figure 4 As shown, considering that the amount of cooling oil in the oil-cooled motor 3 is relatively small, in order not to affect the circulation speed of the oil in the oil tank 4, the dual plunger pump used in this embodiment has a larger oil inlet and outlet volume at the first oil extraction end 11 than at the second oil extraction end 12. This results in less oil being drawn from the oil-cooled motor 3 and more oil being drawn from the oil tank 4, thus ensuring the circulation speed of the oil in the oil tank 4 for active heat dissipation.

[0072] For example, the dual plunger pump in this embodiment is not a superposition of ordinary single pumps. The first sucker end 11 and the second sucker end 12 share a swashplate 13, and the number of plungers 14 on both sides of the swashplate 13 is unequal, with the number of plungers 14 on the first sucker end 11 being greater than that on the second sucker end 12. When the oil-cooled motor 3 is working, the auxiliary output shaft 34 drives the swashplate 13 to rotate. Because the number of plungers 14 on the first sucker end 11 is greater than that on the second sucker end 12, the first sucker end 11 draws more oil from the oil tank 4 than it draws from the oil-cooled motor 3.

[0073] like Figure 5 As shown, considering that the oil drawn from the oil tank 4 only needs to be partially fed into the oil-cooled motor 3 after the first cooling, the first cooling oil outlet 212 includes a first cooling oil outlet A 212a and a first cooling oil outlet B 212b. The first cooling oil outlet A 212a is connected to the motor oil return port 32, and the first cooling oil outlet B 212b is connected to the oil tank oil return port 42, thereby ensuring that the oil inlet and outlet of the oil-cooled motor 3 are the same, and the oil inlet and outlet of the oil tank 4 are also the same.

[0074] For example, the tilt angle of the swashplate 13 can be adjusted, thereby making the displacement of the dual piston pump adjustable. This allows for adjustment of the flow rate of the device according to different environmental heat dissipation requirements, making the combined active cooling device more flexible and ensuring adaptability in different environments.

[0075] Optionally, a dual-channel proportional valve can be installed at the first cooling oil outlet 212 to coordinate with the flow regulation of the dual plunger pump and distribute the flow of the first cooling oil outlet A 212a and the first cooling oil outlet B 212b.

[0076] The combined active cooling device based on the vehicle-mounted integrated pump station in this embodiment can not only achieve combined active cooling, but also improve the circulation cooling speed of the oil in the oil tank 4, thereby greatly improving the cooling efficiency of the hydraulic system and enabling the hydraulic system to be used in higher temperature environments.

[0077] Example 3

[0078] This embodiment discloses a combined active cooling method based on a vehicle-mounted integrated pump station, employing the combined active cooling device based on a vehicle-mounted integrated pump station as described in Embodiment 1 or Embodiment 2 for heat dissipation. Figure 6 As shown, the specific steps include:

[0079] S1 oil pumping mechanism 1 continuously draws oil from oil tank 4 and oil-cooled motor 3 and delivers it to heat dissipation unit 2 respectively;

[0080] S2 heat dissipation unit 2 dissipates heat from the oil;

[0081] S3 oil continuously flows out of the heat dissipation unit 2 and into the oil tank 4 and the oil-cooled motor 3 respectively.

[0082] The combined active cooling method of this embodiment, through the continuous operation of the oil pumping mechanism 1 in step S1, can not only cool the oil-cooled motor 3, but also continuously circulate and actively cool the oil in the oil tank 4. It does not need to wait for the hydraulic system to return oil before passive cooling can be performed, thus improving the cooling efficiency and continuously ensuring the stable working environment of the hydraulic system.

[0083] Furthermore, step S1 includes the following sub-steps.

[0084] S101 oil pumping mechanism 1 continuously draws oil from oil tank 4 and oil-cooled motor 3;

[0085] S102 oil pumping mechanism 1 will pump oil from oil tank 4 to first radiator 21 and pump oil from oil-cooled motor 3 to second radiator 22.

[0086] Meanwhile, step S3 includes the following sub-steps:

[0087] S301 oil continuously flows out of heat dissipation unit 2;

[0088] S302 The oil flowing out of the first radiator 21 flows into the oil-cooled motor 3, and the oil flowing out of the second radiator 22 flows into the oil tank 4.

[0089] By setting sub-steps S101, S102 and S301, S302, the oil in the oil tank 4 can be fully utilized to synchronously cool the oil-cooled motor 3. There is no need for the oil-cooled motor 3 to use a separate special cooling oil, nor is it necessary to replace and maintain it regularly. At the same time, it can also achieve the effect of joint active cooling of the oil in the oil tank 4 and the oil-cooled motor 3, which improves the cooling efficiency, saves the space and power occupied by the cooling device, and can continuously ensure the stable working environment of the hydraulic system.

[0090] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A combined active cooling device based on an on-board integrated pump station, characterized in that, The oil pumping mechanism (1), the heat dissipation unit (2) and the oil-cooled motor (3) are included. The heat dissipation unit (2) includes a first radiator (21) and a second radiator (22). The oil pumping mechanism (1) includes a first oil pumping end (11) and a second oil pumping end (12). The first oil pumping end (11) includes a first oil pumping port (111) and a first oil conveying port (112), and the first oil pumping port (111) and the first oil conveying port (112) are respectively connected with an oil tank (4) and the first radiator (21). The second oil pumping end (12) includes a second oil pumping port (121) and a second oil conveying port (122), and the second oil pumping port (121) and the second oil conveying port (122) are respectively connected with the oil-cooled motor (3) and the second radiator (22). The oil pumping mechanism (1) can simultaneously drive the oil in the oil tank (4) and the oil-cooled motor (3) to enter the heat dissipation unit (2) for active heat dissipation.

2. The integrated pump station based combined active heat sink device of claim 1, wherein, The oil pumping mechanism (1) is a double-plunger pump.

3. The integrated pump station based combined active heat sink device of claim 2, wherein, The first radiator (21) and the second radiator (22) each include at least one set of heat dissipation components (200).

4. The integrated pump station based combined active heat sink device of claim 3, wherein, The heat dissipation components (200) include semiconductor refrigeration chips (201) and heat conduction members (202), and the semiconductor refrigeration chips (201) are attached to the outer surfaces of the heat conduction members (202).

5. The integrated pump station based combined active heat sink device of claim 4, wherein, The heat conduction members (202) are provided with oil cooling channels (2021), and the flow direction of the oil cooling channels (2021) is parallel to the semiconductor refrigeration chips (201).

6. The integrated vehicular pump station based combined active heat sink device of claim 5, wherein, The semiconductor refrigeration chips (201) are attached to the two opposite outer surfaces of the heat conduction members (202).

7. The integrated pump station based combined active heat sink device of claim 6, wherein, The heat conduction members (202) further include heat conduction fins (2022), and the heat conduction fins (2022) divide the oil cooling channels (2021) into multiple honeycomb or grid-shaped channels.

8. The integrated pump station based combined active heat sink device of claim 7, wherein, The material of the heat conduction members (202) is aluminum alloy.

9. The integrated pump station based combined active heat sink device of any one of claims 2 to 8, wherein, The double-plunger pump includes a swash plate (13), and the inclination angle of the swash plate (13) is adjustable.

10. A method for combined active cooling based on an integrated on-board pump station, characterized in that, The active heat dissipation device based on the vehicle-mounted integrated pump station is used for heat dissipation.

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