A water cooling system for unmanned transport vehicles

Abstract

The present invention proposes a water cooling system for an unmanned transport vehicle, comprising two independent modular water cooling units respectively arranged at the front and rear of the vehicle; the two independent modular water cooling units share a set of main radiators and main fans, and each independent modular water cooling unit includes a main water pump; the main radiator adopts a dual-channel design, taking into account two independent cooling circuits, respectively connected to the main water pumps of the two independent modular water cooling units; the main fan is arranged at the main radiator. The present invention ensures cooling efficiency and system stability by dividing the water cooling system into two independent modular water cooling units that share a set of dual-channel main radiators according to the distribution of the vehicle's electric drive power system and hydraulic system in the front and rear of the vehicle body, and the main radiator takes into account two independent cooling circuits, and if any one of them leaks, the other one can still ensure the creeping power of the vehicle; and the water cooling components are centrally arranged, which reduces the complexity of the control circuit and pipeline layout, and effectively avoids electrical failures.

Description

Technical Field

[0001] The invention belongs to the field of logistics transportation equipment, and in particular relates to a water cooling system for an unmanned transport vehicle. Background Art

[0002] The existing unmanned transport vehicle water cooling system usually adopts the following two methods: the overall circulation water cooling system and the relatively independent water cooling system for each subsystem. However, these two methods have the following disadvantages: 1. Overall circulation water cooling system: Difficult to exhaust and low circulation cooling efficiency; The cooling pipes are long and complex with many bends and joints, which are prone to water leakage. When a pipe leaks, the entire system may fail, causing the vehicle to be unable to operate or even damaging important components.

[0003] 2. Relatively independent water cooling system for each subsystem: Purchased parts are expensive, take up a lot of space, and have low reliability; The system is highly complex and requires frequent monitoring of the operating conditions of the expansion tank, water pump, and radiator, which increases the management burden and easily causes alarm shutdowns; The electrical wiring layout is complex and the electrical failure rate is high. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a water cooling system for an unmanned transport vehicle to optimize cooling efficiency, improve system stability and reduce maintenance costs.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A water cooling system for an unmanned transport vehicle, comprising two independent modular water cooling units arranged at the front and rear of the vehicle respectively; The two independent modular water cooling units share a set of main radiator and main fan, and each independent modular water cooling unit includes a main water pump; The main radiator adopts a dual-channel design, taking into account two independent cooling circuits, and is respectively connected to the main water pumps of the two independent modular water cooling units; The main fan is arranged at the main radiator.

[0006] The beneficial effects of the present invention are: providing a water cooling system for an unmanned transport vehicle, which ensures cooling efficiency and system stability by dividing the main water cooling system into two independent modular water cooling units that share a set of dual-channel main radiators according to the distribution of the vehicle's electric drive power system and hydraulic system in the front and rear of the vehicle body, and ensures the redundancy of the power and energy water cooling systems that are independent of each other; at the same time, the dual channels of the main radiator can take into account two independent cooling circuits, and when any cooling circuit leaks, the other can still perform water cooling operations normally to ensure the vehicle's creeping power; in addition, the water cooling elements in each independent modular water cooling unit are centrally arranged, which reduces the complexity of the control line and pipeline layout, and effectively avoids electrical failures; the overall optimization of cooling efficiency, improvement of system stability and reduction of maintenance costs are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of various water cooling circuits of a water cooling system for an unmanned transport vehicle according to an embodiment of the present invention; Figure 2 The present invention is a schematic structural diagram of a water cooling system for an unmanned transport vehicle according to an embodiment of the present invention.

[0008] Description of labels: 10. Independent modular water cooling unit; 11. Main radiator; 12. Main water pump; 13. Main fan; 14. Main expansion water tank; 20. Power battery cooling unit; 21. Power battery radiator; 22. Power battery water pump; 23. Power battery fan; 24. Power battery expansion tank; 25. Vehicle power battery; 30. Fuel cell cooling unit; 31. Fuel cell radiator; 32. Fuel cell water pump; 33. Fuel cell fan; 34. Fuel cell expansion water tank; 35. Hydrogen fuel cell; 41. Rectifier; 42. Air compressor inverter; 42. Air compressor; 43. Front motor driver; 44. Front motor; 46. Fuel cell DCDC; 51. Hydraulic motor driver; 52. Rear motor driver; 53. Rear motor; 6. Water-cooled assembly cabinet; 7. Hydraulic hydrogen fuel cabinet; 8. Electrical cabinet. DETAILED DESCRIPTION

[0009] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0010] Please refer to Figure 1 and Figure 2 , a water cooling system for an unmanned transport vehicle, comprising two independent modular water cooling units arranged at the front and rear of the vehicle respectively; The two independent modular water cooling units share a set of main radiator and main fan, and each independent modular water cooling unit includes a main water pump; The main radiator adopts a dual-channel design, taking into account two independent cooling circuits, and is respectively connected to the main water pumps of the two independent modular water cooling units; The main fan is arranged at the main radiator.

[0011] From the above description, it can be seen that the beneficial effects of the present invention are: providing a water cooling system for an unmanned transport vehicle, by dividing the main water cooling system into two independent modular water cooling units that share a set of dual-channel main radiators according to the distribution of the vehicle's electric drive power system and hydraulic system in the front and rear of the vehicle body, thereby ensuring cooling efficiency and system stability, and ensuring the redundancy of the power and energy water cooling systems that are independent of each other; at the same time, the dual channels of the main radiator can take into account two independent cooling circuits, and when any cooling circuit leaks, the other can still perform water cooling operations normally to ensure the vehicle's creeping power; in addition, the water cooling elements in each independent modular water cooling unit are centrally arranged, which reduces the complexity of the control line and pipeline layout, and effectively avoids electrical failures; the overall optimization of cooling efficiency, improved system stability and reduced maintenance costs are achieved.

[0012] Furthermore, there are four main fans; One of the two independent cooling circuits has cooling pipes arranged in the order of cooling a rectifier, an air compressor inverter, an air compressor, a front motor driver and a front motor of the vehicle; The other independent cooling circuit arranges cooling pipes in the order of cooling the hydraulic motor drive, the rear motor drive and the rear motor of the vehicle.

[0013] From the above description, it can be seen that the two independent modular water cooling units share the main fan with a four-fan design to achieve simultaneous cooling of the two independent cooling circuits on the dual-channel main radiator, and then simultaneously cool the front and rear drive systems of the vehicle, while ensuring the cooling effect. When one of the independent cooling circuits has a pipeline leak or other failure, the other independent cooling circuit can still ensure the normal operation of the other drive system, that is, to ensure the creeping power of the vehicle; in addition, the two independent cooling circuits are also independent and will not fail at the same time. On the premise of ensuring the relative redundancy and independence of each key system, the water cooling components and pipelines are reduced to maximize the system stability; in addition, in order to divide the cooling system into two front and rear modules, the corresponding water cooling components and pipelines are doubled. In order to minimize the complexity of the pipeline as much as possible, the layout of the two independent water cooling pipelines can be adjusted according to a certain water cooling sequence combined with the heat generation of the electrical components to ensure that the heat of the cooling water does not flow back into the equipment.

[0014] Furthermore, it also includes two independent power battery cooling units and fuel cell cooling units, which are used to cool the vehicle power battery and hydrogen fuel cell respectively.

[0015] From the above description, it can be seen that the use of two independent energy system cooling units can also effectively ensure that no failure occurs at the same time. Under the premise of ensuring the relative redundancy and independence of each key system, the water cooling components and pipelines can be reduced to maximize the system stability.

[0016] Furthermore, the two independent modular water cooling units are respectively arranged alternately with the power battery cooling unit and the fuel cell cooling unit at four corners in the vehicle compartment.

[0017] From the above description, it can be seen that two independent modular water cooling units and two energy system cooling units are arranged in a staggered manner at the four corners of the vehicle compartment, effectively utilizing the interior space layout to improve the water cooling effect.

[0018] Further, the power battery cooling unit includes a power battery radiator, a power battery water pump and a power battery fan; The power battery radiator also serves as a power battery cooling circuit; The power battery water pump is connected to the power battery cooling circuit; The power battery fan is arranged at the power battery cooling circuit; The fuel cell cooling unit includes a fuel cell radiator, a fuel cell water pump and a fuel cell fan; The fuel cell radiator also serves as a fuel cell cooling circuit; The fuel cell water pump is connected to the fuel cell cooling circuit; The fuel cell fan is arranged at the fuel cell radiator; The power battery cooling circuit and the fuel cell cooling circuit are respectively coupled with the adjacent independent cooling circuits.

[0019] From the above description, it can be seen that the two energy system cooling units are each integrated with independent water cooling components such as radiators, water pumps and fans to ensure effective heat dissipation of the vehicle's power batteries and hydrogen fuel cells; in addition, the cooling circuits of the two energy system cooling units are coupled with the nearest independent cooling circuit to reduce line length while increasing reliability.

[0020] Furthermore, each of the independent modular water cooling units also includes a main expansion water tank; The main expansion water tank in each of the independent modular water cooling units is arranged on the independent cooling circuit in the independent modular water cooling unit; The main expansion water tank is equipped with a water level sensor for real-time monitoring of whether the independent cooling circuits are leaking.

[0021] From the above description, it can be seen that each independent cooling circuit is provided with a separate main expansion water tank to ensure water cooling efficiency; at the same time, the main expansion water tank has a built-in water level sensor to effectively detect whether the respective water cooling circuit has leaks.

[0022] Furthermore, the power battery cooling unit and the fuel cell cooling unit further include a power battery expansion water tank and a fuel cell expansion water tank respectively; The power battery expansion water tank and the fuel cell expansion water tank are respectively arranged on the power battery cooling circuit and the fuel cell cooling circuit; The power battery expansion water tank and the fuel cell expansion water tank are both equipped with the water level sensor, which is used to monitor in real time whether the power battery cooling circuit and the fuel cell cooling circuit are leaking.

[0023] From the above description, it can be seen that the cooling circuits of the two energy system cooling units are also respectively provided with separate expansion water tanks to further ensure the water cooling efficiency of the vehicle power battery and hydrogen fuel cell; at the same time, the expansion water tanks in the two energy system cooling units are also equipped with built-in water level sensors to effectively detect whether their respective water cooling circuits are leaking.

[0024] Further, the main water pump, the main radiator, the main fan, the main expansion water tank, the power battery water pump, the power battery radiator, the power battery fan and the power battery expansion water tank are centrally arranged in a water cooling assembly cabinet of the vehicle; The fuel cell water pump, the fuel cell radiator, the fuel cell fan and the fuel cell expansion water tank are centrally arranged in a hydraulic hydrogen fuel tank of a vehicle.

[0025] From the above description, it can be seen that the water cooling devices in the two independent modular water cooling units and the power battery cooling unit are all centrally arranged in the vehicle's water cooling assembly cabinet, effectively reducing the control lines and pipeline layout; in addition, the water cooling devices in the fuel cell cooling unit are separately integrated in the hydraulic hydrogen fuel cabinet, effectively separating the two energy batteries independently, ensuring that the dual sources will not fail at the same time and cause vehicle failure.

[0026] Furthermore, the two independent modular water cooling units, the power battery cooling unit and the fuel cell cooling unit further include a control subunit, and each of the control subunits has a built-in temperature sensor; The control subunit located in the independent modular water cooling unit obtains the temperature change of the main radiator in real time through the temperature sensor to automatically adjust the speed of the main fan; The control subunit located in the power battery cooling unit acquires the temperature change of the power battery radiator in real time through the temperature sensor to automatically adjust the speed of the power battery fan; The control subunit located in the fuel cell cooling unit acquires the temperature change of the fuel cell radiator in real time through the temperature sensor to automatically adjust the rotation speed of the fuel cell fan.

[0027] From the above description, it can be seen that the fan speed collects the temperature changes of the radiators in each water cooling unit or cooling unit through the temperature sensors built into each water cooling unit or cooling unit, and the wind speed is adjusted by the control unit, which improves the cooling efficiency while effectively reducing the control difficulty of the water cooling system, thereby effectively reducing the electrical failure rate.

[0028] Furthermore, the exhaust structures of the main radiator, the power battery radiator and the fuel cell radiator are centrally designed to collect hot air and discharge it outside the vehicle through a single exhaust channel to form a large circulation air duct.

[0029] From the above description, it can be seen that the hot air generated by the heat dissipation of various water cooling units is concentrated in one place and then discharged out of the vehicle, forming a large circulation air duct as a whole, which effectively enhances the cooling efficiency.

[0030] The present invention provides a water cooling system for an unmanned transport vehicle, which is suitable for the water cooling scenario of the power system of a hydrogen fuel hybrid heavy-duty unmanned transport vehicle, and is specifically described below in conjunction with specific embodiments: Please refer to Figure 1 , Embodiment 1 of the present invention is: A water cooling system for an unmanned transport vehicle comprises two independent modular water cooling units 10 respectively arranged at the front and rear parts of the vehicle.

[0031] like Figure 1 As shown, two independent modular water cooling units 10 share a set of main radiator 11 and main fan 13, and each independent modular water cooling unit 10 includes a main water pump 12. The main radiator 11 adopts a dual-channel design, taking into account two independent cooling circuits, and is respectively connected to the main water pumps 12 of the two independent modular water cooling units 10; the main fan 13 is arranged at the main radiator 11.

[0032] In this embodiment, the cooling circuit is Figure 1 The lines with arrows in the middle, the bold ones are cooled cold water that is exchanging heat with the heat-generating electrical components of the vehicle power system through the cooling pipes, and the non-bold ones are hot water that has exchanged heat with the heat-generating electrical components through the cooling pipes. After returning to the radiator to dissipate the heat again, it is cooled back to cold water and then returned to the expansion water tank for storage and continued to be used to cool the heat-generating electrical components, thus realizing a water cooling cycle.

[0033] That is, in the present embodiment, the main water cooling system is divided into two independent modular water cooling units 10 which share a set of dual-channel main radiator 11 according to the distribution of the vehicle's electric drive power system and hydraulic system in the front and rear of the vehicle body, so as to ensure the cooling efficiency and system stability, and ensure the redundancy of the water cooling systems of power and energy. At the same time, the dual channels of the main radiator 11 can take into account two independent cooling circuits. When any cooling circuit leaks, the other circuit can still perform water cooling operation normally to ensure the creeping power of the vehicle. In addition, the water cooling elements in each independent modular water cooling unit are centrally arranged, which reduces the complexity of the control line and pipeline layout, and effectively avoids electrical failures. The overall optimization of cooling efficiency, improvement of system stability and reduction of maintenance costs are achieved.

[0034] In this embodiment, there are four main fans 13, and one of the two independent cooling circuits has cooling pipes arranged in the cooling order of the vehicle's rectifier 41, air compressor inverter 42, air compressor 42, front motor driver 43 and front motor 44. At the same time, a branch line is added to branch out another cooling circuit after the rectifier 41, which flows back to the front motor driver 43 after heat exchange through the fuel cell DCDC46; the other independent cooling circuit has cooling pipes arranged in the cooling order of the vehicle's hydraulic motor driver 51, rear motor driver 52 and rear motor 53.

[0035] That is, the two independent modular water cooling units 10 share a main fan 13 with a four-fan design, so as to realize simultaneous cooling of the two independent cooling circuits on the dual-channel main radiator 11, and then simultaneously cool the front and rear drive systems of the vehicle, so as to ensure the cooling effect. When a pipe leak or other failure occurs in one of the independent cooling circuits, the other independent cooling circuit can still ensure the normal operation of the other drive system, that is, to ensure the creeping power of the vehicle; in addition, the two independent cooling circuits are also independent and will not fail at the same time. Under the premise of ensuring the relative redundancy and independence of each key system, the water cooling elements and pipelines are reduced to maximize the system stability; in addition, in order to divide the cooling system into two front and rear modules, the corresponding water cooling elements and pipelines are doubled. In order to minimize the complexity of the pipeline as much as possible, the layout of the two independent water cooling pipelines can be adjusted according to a certain water cooling sequence combined with the heat generation of the electrical components to ensure that the cooling water heat does not flow back into the equipment. In this embodiment, the order of heat generation is generally as follows: travel motor>rectifier 41>motor driver>other electrical components. In addition, in order to facilitate observation and maintenance of each pipe joint, they can be set in a reasonable position according to the layout of the vehicle compartment. In addition, radiators, water pumps and fans whose sizes and heat dissipation capacity are suitable for the vehicle layout space can be selected. The models and specifications of the water cooling components are not specifically limited here.

[0036] At the same time Figure 1 As shown, in this embodiment, two independent power battery cooling units 20 and fuel cell cooling units 30 are also included, which are used to cool the vehicle power battery 25 and the hydrogen fuel cell 35 respectively.

[0037] That is, in this embodiment, the use of two independent energy system cooling units can also effectively ensure that no failure occurs at the same time. Under the premise of ensuring the relative redundancy and independence of each key system, the water cooling components and pipelines are reduced to maximize the system stability.

[0038] In this embodiment, two independent modular water cooling units 10 are staggered with the power battery cooling unit 20 and the fuel cell cooling unit 30 at the four corners of the vehicle compartment. That is, the two independent modular water cooling units 10 and the two energy system cooling units are arranged in a staggered manner at the four corners of the vehicle compartment, and the space layout inside the vehicle is effectively utilized to improve the water cooling effect, that is, a modular water cooling cabinet is adopted. According to the change of the layout, the water cooling cabinet can be placed at any position of the four corners of the whole vehicle, or in other equivalent embodiments, the cooling effect can be enhanced by adding a water cooling cabinet.

[0039] It can be seen that in this embodiment, two independent modular water cooling units 10 and two energy system cooling units can ensure that in the event of a water cooling failure in one power system or a power supply (power battery or hydrogen fuel cell 35) system failure, the vehicle can still maintain heavy-load creeping capability.

[0040] And again Figure 1 As shown, in this embodiment, the power battery cooling unit 20 includes a power battery radiator 21, a power battery water pump 22 and a power battery fan 23. The power battery radiator 21 also serves as a power battery cooling circuit, the power battery water pump 22 is connected to the power battery cooling circuit, and the power battery fan 23 is arranged at the power battery cooling circuit.

[0041] At the same time, the fuel cell cooling unit 30 includes a fuel cell radiator 31, a fuel cell water pump 32 and a fuel cell fan 33. The fuel cell radiator 31 also serves as a fuel cell cooling circuit, the fuel cell water pump 32 is connected to the fuel cell cooling circuit, and the fuel cell fan 33 is arranged at the fuel cell radiator 31.

[0042] In this embodiment, the power battery cooling circuit and the fuel cell cooling circuit are respectively coupled with adjacent independent cooling circuits.

[0043] That is, the two energy system cooling units are also integrated with water cooling elements such as radiators, water pumps and fans to ensure effective heat dissipation of the vehicle power battery 25 and the hydrogen fuel cell 35; in addition, the cooling circuits of the two energy system cooling units are coupled with the nearby independent cooling circuits, which can reduce the line length while increasing reliability.

[0044] Please refer to Figure 1 and Figure 2 , Embodiment 2 of the present invention is: A water cooling system for an unmanned transport vehicle, based on the above-mentioned embodiment 1, in this embodiment, as Figure 1 As shown, each independent modular water cooling unit 10 further includes a main expansion water tank 14, and the main expansion water tank 14 in each independent modular water cooling unit 10 is arranged on an independent cooling circuit in the independent modular water cooling unit 10. That is, each independent cooling circuit is provided with a separate main expansion water tank 14 to ensure water cooling efficiency; at the same time, the main expansion water tank is built with a water level sensor, which can be used to monitor in real time whether the independent cooling circuit in which it is located is leaking.

[0045] At the same time, the power battery cooling unit 20 and the fuel cell cooling unit 30 also include a power battery expansion water tank 24 and a fuel cell expansion water tank 34, respectively, and the power battery expansion water tank 24 and the fuel cell expansion water tank 34 are respectively arranged on the power battery cooling circuit and the fuel cell cooling circuit. That is, the cooling circuits of the two energy system cooling units are also respectively provided with separate expansion water tanks, further ensuring the water cooling efficiency of the vehicle power battery 25 and the hydrogen fuel cell 35; at the same time, the expansion water tanks in the two energy system cooling units are also built-in with water level sensors, which can also effectively detect whether the respective water cooling circuits are leaking.

[0046] At the same time, in this embodiment, the two independent modular water cooling units 10, the power battery cooling unit 20 and the fuel cell cooling unit 30 also include a control subunit not shown in the figure, and each control subunit has a built-in temperature sensor, then: The control subunit located in the independent modular water cooling unit 10 obtains the temperature changes of the main radiator 11 in real time through the temperature sensor to automatically adjust the rotation speed of the main fan 13; the control subunit located in the power battery cooling unit 20 obtains the temperature changes of the power battery radiator 21 in real time through the temperature sensor to automatically adjust the rotation speed of the power battery fan 23; the control subunit located in the fuel cell cooling unit 30 obtains the temperature changes of the fuel cell radiator 31 in real time through the temperature sensor to automatically adjust the rotation speed of the fuel cell fan 33.

[0047] That is, in this embodiment, the speed of the fan is collected by the temperature sensor built into each water cooling unit or cooling unit to collect the temperature change of the radiator in each water cooling unit or cooling unit, and the wind speed is adjusted by the control unit, which improves the cooling efficiency and effectively reduces the control difficulty of the water cooling system, thereby effectively reducing the electrical failure rate. In addition, in this embodiment, the water pump of each water cooling unit or cooling unit is also built with a fault feedback mechanism, which can feedback whether the water pump has a fault through the fault feedback mechanism, so as to promptly notify the staff to handle it.

[0048] like Figure 2 As shown, the main water pump 12, the main radiator 11, the main fan 13, the main expansion water tank 14, the power battery water pump 22, the power battery radiator 21, the power battery fan 23 and the power battery expansion water tank 24 are centrally arranged in the water cooling assembly cabinet 6 of the vehicle; the fuel cell water pump 32, the fuel cell radiator 31, the fuel cell fan 33 and the fuel cell expansion water tank 34 are centrally arranged in the hydraulic hydrogen fuel tank 7 of the vehicle. It is worth noting that other electrical components in this embodiment, including the rectifier 41, the inverter, the hydraulic press and the air compressor 42, etc., can all be centrally arranged in the electrical cabinet 8, that is, as shown in FIG. Figure 2 shown.

[0049] That is, in this embodiment, the water cooling devices in the two independent modular water cooling units 10 and the power battery cooling unit 20 are all centrally arranged in the vehicle's water cooling assembly cabinet 6, which effectively reduces the control lines and pipeline layout while facilitating maintenance and fault confirmation; in addition, the water cooling devices in the fuel cell cooling unit 30 are separately integrated in the hydraulic hydrogen fuel cabinet 7, which effectively separates the two energy batteries independently, ensuring that the dual sources will not fail at the same time and cause vehicle failure.

[0050] In addition, in this embodiment, the exhaust structure of the main radiator 11, the power battery radiator 21 and the fuel cell radiator 31 also adopts a centralized design, which is used to collect the hot air and discharge it outside the vehicle through a single exhaust channel to form a large circulation air duct. That is, the hot air generated by the heat dissipation of the water cooling units at various locations is concentrated in one place and then discharged outside the vehicle, forming a large circulation air duct as a whole, effectively enhancing the cooling efficiency.

[0051] In summary, the water cooling system for an unmanned transport vehicle provided by the present invention has the following beneficial effects: 1. According to the distribution of the vehicle's electric drive system and hydraulic system in the front and rear of the vehicle body, the main water cooling system is divided into two independent modular water cooling units at the front and rear, which ensures cooling efficiency and system stability, and ensures the redundancy of the power and energy water cooling systems; 2. After the water cooling unit is divided into two modules, the corresponding water cooling devices and pipelines increase exponentially. In order to reduce the complexity of the pipeline as much as possible, the cooling pipeline is arranged according to the order of the water cooling system and the heat generated by the electrical components to ensure that the heat of the cooling water does not flow back into the equipment; 3. Two independent modular water cooling units that share a dual-channel main radiator ensure cooling efficiency and system stability. The main radiator has two independent cooling circuits. If one of them leaks, the other can still ensure the vehicle's creeping power. At the same time, the two energy system cooling units - the power battery cooling unit and the fuel cell cooling unit are also independent and will not fail at the same time. Under the premise of ensuring the relative redundancy and independence of each key system, the water cooling components and pipelines are reduced to maximize the system stability. 4. Water-cooling components are centrally arranged, and fans, water pumps and other control components are centrally arranged in the water-cooling module cabinet to reduce the control line and pipeline layout; in addition, the cooling circuit of the energy system is coupled with the independent cooling circuit of the independent modular water-cooling unit to reduce the line length and increase reliability; 5. The fan speed collects the temperature changes of the radiator in each water cooling unit or cooling unit through the temperature sensor built into each water cooling unit or cooling unit, and the wind speed is adjusted by the control unit, which improves the cooling efficiency and effectively reduces the control difficulty of the water cooling system, thereby effectively reducing the electrical failure rate.

[0052] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A water cooling system for an unmanned transport vehicle, characterized in that: It includes two independent modular water cooling units arranged at the front and rear of the vehicle respectively; The two independent modular water cooling units share a set of main radiator and main fan, and each independent modular water cooling unit includes a main water pump; The main radiator adopts a dual-channel design, taking into account two independent cooling circuits, and is respectively connected to the main water pumps of the two independent modular water cooling units; The main fan is arranged at the main radiator.

2. The water cooling system for an unmanned transport vehicle according to claim 1, characterized in that: There are four main fans; One of the two independent cooling circuits has cooling pipes arranged in the order of cooling a rectifier, an air compressor inverter, an air compressor, a front motor driver and a front motor of the vehicle; The other independent cooling circuit arranges cooling pipes in the order of cooling the hydraulic motor drive, the rear motor drive and the rear motor of the vehicle.

3. The water cooling system for an unmanned transport vehicle according to claim 1, characterized in that: It also includes two independent power battery cooling units and fuel cell cooling units, which are used to cool the vehicle power battery and hydrogen fuel cell respectively.

4. The water cooling system for an unmanned transport vehicle according to claim 3, characterized in that: The two independent modular water cooling units are respectively arranged alternately with the power battery cooling unit and the fuel cell cooling unit at four corners of the vehicle compartment.

5. The water cooling system for an unmanned transport vehicle according to claim 3, characterized in that: The power battery cooling unit includes a power battery radiator, a power battery water pump and a power battery fan; The power battery radiator also serves as a power battery cooling circuit; The power battery water pump is connected to the power battery cooling circuit; The power battery fan is arranged at the power battery cooling circuit; The fuel cell cooling unit includes a fuel cell radiator, a fuel cell water pump and a fuel cell fan; The fuel cell radiator also serves as a fuel cell cooling circuit; The fuel cell water pump is connected to the fuel cell cooling circuit; The fuel cell fan is arranged at the fuel cell radiator; The power battery cooling circuit and the fuel cell cooling circuit are respectively coupled with the adjacent independent cooling circuits.

6. The water cooling system for an unmanned transport vehicle according to claim 5, characterized in that: Each of the independent modular water cooling units also includes a main expansion water tank; The main expansion water tank in each of the independent modular water cooling units is arranged on the independent cooling circuit in the independent modular water cooling unit; The main expansion water tank is equipped with a water level sensor for real-time monitoring of whether the independent cooling circuits are leaking.

7. The water cooling system for an unmanned transport vehicle according to claim 6, characterized in that: The power battery cooling unit and the fuel cell cooling unit further include a power battery expansion water tank and a fuel cell expansion water tank respectively; The power battery expansion water tank and the fuel cell expansion water tank are respectively arranged on the power battery cooling circuit and the fuel cell cooling circuit; The power battery expansion water tank and the fuel cell expansion water tank are both equipped with the water level sensor, which is used to monitor in real time whether the power battery cooling circuit and the fuel cell cooling circuit are leaking.

8. The water cooling system for an unmanned transport vehicle according to claim 7, characterized in that: The main water pump, the main radiator, the main fan, the main expansion water tank, the power battery water pump, the power battery radiator, the power battery fan and the power battery expansion water tank are centrally arranged in a water cooling assembly cabinet of the vehicle; The fuel cell water pump, the fuel cell radiator, the fuel cell fan and the fuel cell expansion water tank are centrally arranged in a hydraulic hydrogen fuel tank of a vehicle.

9. The water cooling system for an unmanned transport vehicle according to claim 6, characterized in that: The two independent modular water cooling units, the power battery cooling unit and the fuel cell cooling unit further include a control subunit, and each of the control subunits has a built-in temperature sensor; The control subunit located in the independent modular water cooling unit obtains the temperature change of the main radiator in real time through the temperature sensor to automatically adjust the speed of the main fan; The control subunit located in the power battery cooling unit acquires the temperature change of the power battery radiator in real time through the temperature sensor to automatically adjust the speed of the power battery fan; The control subunit located in the fuel cell cooling unit acquires the temperature change of the fuel cell radiator in real time through the temperature sensor to automatically adjust the rotation speed of the fuel cell fan.

10. The water cooling system for an unmanned transport vehicle according to claim 6, characterized in that: The exhaust structures of the main radiator, the power battery radiator and the fuel cell radiator are centrally designed to collect hot air and discharge it out of the vehicle through a single exhaust channel to form a large circulation air duct.

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