Non-road mobile machine and thermal management device thereof

Abstract

A non-road mobile machine and a thermal management device thereof, the non-road mobile machine comprising a thermal management device, the thermal management device comprising: a wind scooper disposed in an engine compartment; the fan is arranged corresponding to the wind scooper; the heat dissipation mechanism is arranged on one side of the wind scooper, the heat dissipation mechanism comprises an intercooling air radiator, an engine cooling liquid radiator, an electric drive cooling liquid radiator and a hydraulic oil radiator which are arranged in parallel, and the intercooling air radiator and the engine cooling liquid radiator are connected with the engine; the electric drive cooling liquid radiator is connected with the electric drive device; the hydraulic oil radiator is connected with the hydraulic device; the fan speed change mechanism is connected with the fan; the fan speed change mechanism is connected with the VCU vehicle-mounted controller; wherein the VCU vehicle-mounted controller is connected with the heat dissipation mechanism and controls the fan speed change mechanism to adjust the rotating speed of the fan according to the temperature data of the heat dissipation mechanism.

Description

Technical Field

[0001] The utility model relates to a hybrid non-road mobile machine, in particular to a non-road mobile machine and a thermal management device thereof. Background Art

[0002] At present, hybrid non-road mobile machinery has been widely used in products, but the thermal management devices of hybrid non-road mobile machinery in the prior art are all split structures. One part is the engine intercooler, engine coolant and hydraulic oil combined radiator, and the other part is the electric drive component coolant radiator. These two parts are installed independently, which makes the overall layout structure complicated, thus affecting the heat dissipation effect; at the same time, the electric drive component coolant radiator uses a 24V or 12V low-power motor to drive the fan for heat dissipation. Due to the low power of the motor, the heat dissipation power of the fan is small, so the volume of the electric drive coolant radiator is relatively large; in addition, since the electric drive coolant radiator needs to ensure that the flow direction of the heat dissipation air is consistent with the heat dissipation air flow direction of the engine intercooler, engine coolant and hydraulic oil combined radiator, the difficulty of the overall layout is increased. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a non-road mobile machinery and a thermal management device thereof in view of the above-mentioned defects of the prior art.

[0004] In order to achieve the above-mentioned object, the utility model provides a thermal management device for non-road mobile machinery, which includes:

[0005] An air guide hood is provided in the engine compartment of a non-road mobile machinery;

[0006] A fan, arranged corresponding to the air guide cover;

[0007] a heat dissipation mechanism, arranged on one side of the air guide cover, the heat dissipation mechanism comprising an intercooler air radiator, an engine coolant radiator, an electric drive coolant radiator and a hydraulic oil radiator arranged in parallel, the intercooler air radiator and the engine coolant radiator are respectively connected to the engine of the non-road mobile machinery; the electric drive coolant radiator is connected to the electric drive device of the non-road mobile machinery; the hydraulic oil radiator is connected to the hydraulic device of the non-road mobile machinery; and

[0008] A fan speed change mechanism connected to the fan; the fan speed change mechanism is connected to an onboard controller of the non-road mobile machinery;

[0009] Wherein, the vehicle-mounted controller is connected to the heat dissipation mechanism, and controls the fan speed change mechanism to adjust the rotation speed of the fan according to the temperature data of the heat dissipation mechanism.

[0010] The above-mentioned thermal management device of the non-road mobile machinery, wherein the electric drive device includes a travel control mechanism, an auger control mechanism and a generator control mechanism, and the electric drive coolant radiator is connected to the travel control mechanism through a first heat dissipation circuit; connected to the auger control mechanism through a second heat dissipation circuit; and connected to the generator control mechanism through a third heat dissipation circuit.

[0011] In the above-mentioned thermal management device for non-road mobile machinery, the first heat dissipation circuit, the second heat dissipation circuit and the third heat dissipation circuit are arranged in parallel.

[0012] The above-mentioned thermal management device for non-road mobile machinery, among other things, also includes an expansion water tank and multiple water pumps, wherein the expansion water tank is connected to the electric drive coolant radiator; the multiple water pumps are respectively arranged on the first cooling circuit, the second cooling circuit and the third cooling circuit.

[0013] The above-mentioned thermal management device of non-road mobile machinery, wherein the travel control mechanism includes a left travel controller and a right travel controller in parallel, the left travel controller is connected to the left travel motor; the right travel controller is connected to the right travel motor; the auger control mechanism includes a left auger controller and a right auger controller in parallel, the left auger controller is connected to the left auger motor, and the right auger controller is connected to the right auger motor; the generator control mechanism includes a generator controller, and the generator controller is connected to the generator.

[0014] The above-mentioned thermal management device of non-road mobile machinery, among which, also includes an engine coolant temperature sensor, an intercooler air temperature sensor, an electric drive coolant temperature sensor and a hydraulic oil temperature sensor, wherein the engine coolant temperature sensor is respectively connected to the engine coolant radiator and the vehicle-mounted controller; the intercooler air temperature sensor is respectively connected to the intercooler air radiator and the vehicle-mounted controller; the electric drive coolant temperature sensor is respectively connected to the electric drive coolant radiator and the vehicle-mounted controller; the hydraulic oil temperature sensor is respectively connected to the hydraulic oil radiator and the vehicle-mounted controller.

[0015] The above-mentioned thermal management device of non-road mobile machinery, wherein, also includes a temperature alarm switch, which is installed on the heat dissipation mechanism and connected to the vehicle-mounted controller; or, also includes an engine coolant temperature alarm, an intercooler air temperature alarm, an electric drive coolant temperature alarm and a hydraulic oil temperature alarm, which are respectively installed on the corresponding heat dissipation circuits and respectively connected to the vehicle-mounted controller.

[0016] The above-mentioned thermal management device for non-road mobile machinery, wherein the temperature adjustment range of the intercooler air radiator is 50°C to 100°C; the temperature adjustment range of the engine coolant radiator is 78°C to 100°C; the temperature adjustment range of the electric drive coolant radiator is 45°C to 65°C; the temperature adjustment range of the hydraulic oil radiator is 50°C to 75°C.

[0017] In the above-mentioned thermal management device for non-road mobile machinery, the fan speed change mechanism is a silicone oil clutch, a hydraulic motor or a fan motor.

[0018] In order to better achieve the above-mentioned purpose, the utility model also provides a non-road mobile machinery, which includes the above-mentioned thermal management device.

[0019] The beneficial effects of the utility model are:

[0020] The utility model integrates an engine intercooler air radiator, an engine coolant radiator, an electric drive coolant radiator and a hydraulic oil radiator, realizes the integration of a thermal management device, makes the structure of the whole machine more compact, and makes the overall structural layout and the flow direction of the cooling air more reasonable, thereby improving the heat dissipation efficiency; adopts a high-power fan and controls the fan speed through a fan speed change mechanism, thereby improving the heat dissipation power of the thermal management device and effectively reducing the fuel consumption and noise of the non-road mobile machinery; three heat dissipation circuits are arranged in parallel in the electric drive coolant radiator, and since the required flow rate and flow resistance of the electric drive components in each heat dissipation circuit are consistent, the coolant flowing through each electric drive component is more uniform, thereby improving the temperature stability of the electric drive device and extending the service life of the electric drive device.

[0021] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a non-road mobile machine according to an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of a thermal management device according to an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of the connection relationship of the heat dissipation mechanism of an embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the connection relationship of the electric drive coolant radiator of one embodiment of the utility model;

[0026] Figure 5 This is a working principle diagram of a thermal management device according to an embodiment of the utility model.

[0027] Among them, the reference numerals

[0028] 1 Paving machine chassis

[0029] 2 Walking device

[0030] 3 Hopper

[0031] 4 Engine compartment

[0032] 41 Engine

[0033] 5. Operation table

[0034] 51 Car Controller

[0035] 6 Traction boom

[0036] 7. Thermal management device

[0037] 71 air guide cover

[0038] 72 Fan

[0039] 73 heat dissipation mechanism

[0040] 731 intercooler air radiator

[0041] 732 engine coolant radiator

[0042] 733 electric drive coolant radiator

[0043] 7331 First cooling circuit

[0044] 7332 Second cooling circuit

[0045] 7333 Third cooling circuit

[0046] 7334 expansion tank

[0047] 7335 Water Pump

[0048] 734 Hydraulic Oil Radiator

[0049] 74 Fan speed change mechanism

[0050] 8Electric drive

[0051] 81 Walking control mechanism

[0052] 811 Left Walking Controller

[0053] 812 right walking controller

[0054] 813 left travel motor

[0055] 814 right travel motor

[0056] 82 Generator control mechanism

[0057] 821 generator

[0058] 822 Generator Controller

[0059] 83 auger control mechanism

[0060] 831 Left Auger Controller

[0061] 832 Right Auger Controller

[0062] 833 Left auger motor

[0063] 834 Right auger motor

[0064] 9. Hydraulic device DETAILED DESCRIPTION

[0065] The structural principle and working principle of the utility model are described in detail below in conjunction with the accompanying drawings:

[0066] See also Figure 1 , Figure 1 The schematic diagram of the structure of a non-road mobile machinery of an embodiment of the utility model. The non-road mobile machinery of the utility model, for example, can be an excavator, a bulldozer, a loader, a roller, a paver, a grader, a slotting machine, a pile driving machine, a forklift, a crane, a loading and unloading machine, a tractor and an asphalt transfer vehicle, etc., and can include the thermal management device 7 of the utility model. This embodiment is explained by taking a paver as an example, and the installation and use in other machines can be adjusted according to specific needs. The paver of this embodiment includes a paver chassis 1, a walking device 2, a hopper 3, an engine compartment 4, an operating table 5, a traction arm 6, a thermal management device 7, an electric drive device 8 and a hydraulic device 9. The on-board controller 51 can be set in the operating table 5, and the engine 41 is set in the engine compartment 4. Because the composition, structure, relative position relationship, connection relationship and function of other parts are all relatively mature existing technologies, they are not described here in detail. Only the thermal treatment device of the utility model is described in detail below.

[0067] See also Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of a thermal management device 7 according to an embodiment of the utility model. Figure 3The figure is a schematic diagram of the connection relationship of the heat dissipation mechanism 73 of an embodiment of the utility model. The thermal management device 7 of the utility model includes: an air scoop 71, which is arranged in the engine compartment 4 of the non-road mobile machinery; a fan 72, which is arranged corresponding to the air scoop 71, and preferably the rotation axis of the fan 72 is arranged parallel to or coincident with the center line of the air scoop 71; a heat dissipation mechanism 73, which is arranged on one side of the air scoop 71, and the heat dissipation mechanism 73 includes an intercooler air radiator 731, an engine coolant radiator 732, an electric drive coolant radiator 733 and a hydraulic oil radiator 734 arranged in parallel, and the intercooler air radiator 731 and the engine coolant radiator 732 are respectively connected to the engine 41 of the non-road mobile machinery; the electric drive coolant radiator 733 The non-road mobile machine is connected to the electric drive device 8; the hydraulic oil radiator 734 is connected to the hydraulic device 9 of the non-road mobile machine; and the fan speed change mechanism 74 is connected to the fan 72, which can be installed on the fan 72 and is coaxially arranged with the fan 72; the fan speed change mechanism 74 is connected to the VCU vehicle controller 51 of the non-road mobile machine; wherein the VCU vehicle controller 51 is connected to the heat dissipation mechanism 73, and according to the temperature data of the heat dissipation mechanism 73, controls the fan speed change mechanism 74 to adjust the speed of the fan 72, thereby adjusting the overall temperature of the heat dissipation mechanism 73 to ensure that the temperature of the heat dissipation mechanism 73 is in a suitable state. The fan speed change mechanism 74 can be a silicone oil clutch, a hydraulic motor or a fan motor, etc.

[0068] Among them, the temperature adjustment range of the intercooler air radiator 731 is 50℃~100℃; the temperature adjustment range of the engine coolant radiator 732 is 78℃~100℃; the temperature adjustment range of the electric drive coolant radiator 733 is 45℃~65℃; the temperature adjustment range of the hydraulic oil radiator 734 is 50℃~75℃. The fan 72 is preferably a high-power cooling fan 72, and its power is 10~20kW; the speed percentage of the fan 72 is 0~100%.

[0069] See also Figure 4 , Figure 4The figure is a schematic diagram of the connection relationship of the electric drive coolant radiator 733 of an embodiment of the utility model. The electric drive device 8 of this embodiment includes a walking control mechanism 81, an augers control mechanism 83 and a generator control mechanism 82. Three parallel first heat dissipation circuits 7331, second heat dissipation circuits 7332 and third heat dissipation circuits 7333 can be set at the output end of the electric drive coolant radiator 733. The electric drive coolant radiator 733 is connected to the walking control mechanism 81 through the first heat dissipation circuit 7331; connected to the augers control mechanism 83 through the second heat dissipation circuit 7332; connected to the generator control mechanism 82 through the third heat dissipation circuit 7333. The required flow rate and flow resistance of the electric drive components in each circuit are consistent, so that the flow distribution of the coolant of the electric drive device is more uniform, and the temperature of the electric drive device 8 is more stable, thereby extending the service life of the electric drive device 8. Among them, the first heat dissipation circuit 7331, the second heat dissipation circuit 7332 and the third heat dissipation circuit 7333 are arranged in parallel, and the required flow and flow resistance of the electric drive components in each circuit are consistent. Therefore, the coolant flow flowing through the electric drive device 8 is more balanced, so as to obtain a better cooling effect.

[0070] The walking control mechanism 81 includes a left walking controller 811 and a right walking controller 812 connected in parallel, wherein the left walking controller 811 is connected to a left walking motor 813; and the right walking controller 812 is connected to a right walking motor 814. The auger control mechanism 83 includes a left auger controller 831 and a right auger controller 832 connected in parallel, wherein the left auger controller 831 is connected to a left auger motor 833, and the right auger controller 832 is connected to a right auger motor 834. The generator control mechanism 82 includes a generator controller 822, and the generator controller 822 is connected to a generator 821.

[0071] In this embodiment, it also includes an expansion water tank 7334 and multiple water pumps 7335. The expansion water tank 7334 is connected to the electric drive coolant radiator 733; the multiple water pumps 7335 are respectively arranged in the first heat dissipation circuit 7331, the second heat dissipation circuit 7332 and the third heat dissipation circuit 7333, so that the coolant flow of the electric drive components in each heat dissipation circuit in the electric drive coolant radiator 733 is more uniform, so as to improve the heat dissipation efficiency of the electric drive coolant radiator 733, ensure the temperature stability of the electric drive device 8, and further extend the service life of the electric drive device 8.

[0072] See also Figure 5 , Figure 5This is a working principle diagram of the thermal management device 7 of an embodiment of the utility model. In this embodiment, it also includes an engine coolant temperature sensor, an intercooler air temperature sensor, an electric drive coolant temperature sensor and a hydraulic oil temperature sensor, which are used to respectively collect temperature data of the engine intercooler air of the intercooler air radiator 731, the engine coolant of the engine coolant radiator 732, the electric drive device coolant of the electric drive coolant radiator 733 and the hydraulic oil of the hydraulic oil radiator 734; the engine coolant temperature sensor is respectively connected to the engine coolant radiator 732 and the vehicle controller 51; the intercooler air temperature sensor is respectively connected to the intercooler air radiator 731 and the vehicle controller 51; the electric drive coolant temperature sensor is respectively connected to the electric drive coolant radiator 733 and the vehicle controller 51; the hydraulic oil temperature sensor is respectively connected to the hydraulic oil radiator 734 and the vehicle controller 51. The VCU on-board controller 51 collects the actual temperature on the vehicle through the hydraulic oil temperature sensor, the engine coolant temperature sensor, the intercooler air temperature sensor, and the electric drive coolant temperature sensor. The actual temperature is related to the workload; the actual speed of the engine 41 is read through the engine controller, and the actual speed of the fan 72 is read through the fan 72 speed sensor. The collected actual temperature, the actual speed of the engine 41, and the actual speed of the cooling fan 72 are calculated and combined with the temperature matrix in the table below to obtain the target speed of the cooling fan 72. The VCU on-board controller 51 sends a solenoid valve opening signal to the solenoid valve of the fan speed change mechanism 74 to adjust the speed of the fan 72, thereby achieving temperature control of each cooling medium.

[0073] This embodiment also includes a temperature alarm switch, which is installed on the heat dissipation mechanism 73 and connected to the vehicle controller 51. Alternatively, it also includes an engine coolant temperature alarm, an intercooler air temperature alarm, an electric drive coolant temperature alarm and a hydraulic oil temperature alarm, which are respectively installed on corresponding heat dissipation circuits and respectively connected to the vehicle controller 51. See the table below, which shows the temperature matrix of the heat dissipation mechanism 73 when the fan 72 is at different speed percentages. When the temperature of the engine intercooler air is 120°C, the intercooler air radiator 731 alarms; when the temperature of the engine coolant is 105°C, the engine coolant radiator 732 alarms; when the temperature of the hydraulic oil is 85°C, the hydraulic oil radiator 734 alarms; when the temperature of the electric drive device coolant is 85°C, the electric drive coolant radiator 733 alarms.

[0074]

[0075]

[0076] The thermal management device 7 of the utility model can be installed on non-road mobile machinery, and its heat dissipation mechanism 73 integrates the intercooler air radiator 731, the engine coolant radiator 732, the electric drive coolant radiator 733 and the hydraulic oil radiator 734, thereby realizing the integration of the thermal management device 7, making the structure more compact, the overall layout more simple, the flow direction of the cooling air more reasonable, and the heat dissipation efficiency improved; a high-power fan 72 is used to improve the heat dissipation power; the rotation speed of the fan 72 is controlled by the fan speed change mechanism 74, which effectively reduces the fuel consumption and noise of the non-road mobile machinery; three heat dissipation circuits are arranged in parallel in the electric drive coolant radiator 733. Since the required flow rate and flow resistance of the electric drive components in each heat dissipation circuit are consistent, the coolant flowing through the electric drive device 8 is more uniform, thereby improving the temperature stability of the electric drive device 8 and extending the service life of the electric drive device 8.

[0077] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A thermal management device for non-road mobile machinery, characterized in that: include: An air guide hood is provided in the engine compartment of a non-road mobile machinery; A fan, arranged corresponding to the air guide cover; a heat dissipation mechanism, arranged on one side of the air guide cover, the heat dissipation mechanism comprising an intercooler air radiator, an engine coolant radiator, an electric drive coolant radiator and a hydraulic oil radiator arranged in parallel, the intercooler air radiator and the engine coolant radiator are respectively connected to the engine of the non-road mobile machinery; the electric drive coolant radiator is connected to the electric drive device of the non-road mobile machinery; the hydraulic oil radiator is connected to the hydraulic device of the non-road mobile machinery; and A fan speed change mechanism connected to the fan; the fan speed change mechanism is connected to an onboard controller of the non-road mobile machinery; Wherein, the vehicle-mounted controller is connected to the heat dissipation mechanism, and controls the fan speed change mechanism to adjust the rotation speed of the fan according to the temperature data of the heat dissipation mechanism.

2. The thermal management device for non-road mobile machinery according to claim 1, characterized in that: The electric drive device includes a travel control mechanism, an auger control mechanism and a generator control mechanism. The electric drive coolant radiator is connected to the travel control mechanism through a first heat dissipation circuit; connected to the auger control mechanism through a second heat dissipation circuit; and connected to the generator control mechanism through a third heat dissipation circuit.

3. The thermal management device for non-road mobile machinery according to claim 2, characterized in that: The first heat dissipation circuit, the second heat dissipation circuit and the third heat dissipation circuit are arranged in parallel.

4. The thermal management device for non-road mobile machinery according to claim 2, characterized in that: It also includes an expansion water tank and multiple water pumps, wherein the expansion water tank is connected to the electric drive coolant radiator; the multiple water pumps are respectively arranged on the first heat dissipation circuit, the second heat dissipation circuit and the third heat dissipation circuit.

5. The thermal management device for non-road mobile machinery according to claim 2, characterized in that: The walking control mechanism includes a left walking controller and a right walking controller connected in parallel, and the left walking controller is connected to the left walking motor; the right walking controller is connected to the right walking motor; the auger control mechanism includes a left auger controller and a right auger controller connected in parallel, and the left auger controller is connected to the left auger motor, and the right auger controller is connected to the right auger motor; the generator control mechanism includes a generator controller, and the generator controller is connected to the generator.

6. The thermal management device for non-road mobile machinery according to claim 1, characterized in that: It also includes an engine coolant temperature sensor, an intercooler air temperature sensor, an electric drive coolant temperature sensor and a hydraulic oil temperature sensor. The engine coolant temperature sensor is connected to the engine coolant radiator and the vehicle-mounted controller respectively; the intercooler air temperature sensor is connected to the intercooler air radiator and the vehicle-mounted controller respectively; the electric drive coolant temperature sensor is connected to the electric drive coolant radiator and the vehicle-mounted controller respectively; the hydraulic oil temperature sensor is connected to the hydraulic oil radiator and the vehicle-mounted controller respectively.

7. The thermal management device for non-road mobile machinery according to claim 1, characterized in that: It also includes a temperature alarm switch, which is installed on the heat dissipation mechanism and connected to the vehicle-mounted controller; or, it also includes an engine coolant temperature alarm, an intercooler air temperature alarm, an electric drive coolant temperature alarm and a hydraulic oil temperature alarm, which are respectively installed on corresponding heat dissipation circuits and respectively connected to the vehicle-mounted controller.

8. The thermal management device for non-road mobile machinery according to claim 1, characterized in that: The temperature adjustment range of the intercooler air radiator is 50°C to 100°C; the temperature adjustment range of the engine coolant radiator is 78°C to 100°C; the temperature adjustment range of the electric drive coolant radiator is 45°C to 65°C; the temperature adjustment range of the hydraulic oil radiator is 50°C to 75°C.

9. The thermal management device for non-road mobile machinery according to claim 1, characterized in that: The fan speed changing mechanism is a silicone oil clutch, a hydraulic motor or a fan motor.

10. A non-road mobile machine, characterized in that: A thermal management device comprising any one of claims 1-9.

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