An integrated thermal management system for a tractor and the tractor

Abstract

This utility model relates to the field of agricultural machinery thermal management system technology, and particularly to an integrated thermal management system for a tractor and the tractor itself. The integrated thermal management system for the tractor includes a unit housing; an air conditioning refrigerant circuit connected to the evaporator of the tractor's air conditioning system, with a condenser installed inside the unit housing; a motor circuit connected to the tractor's motor system, with a water radiator installed inside the unit housing; an oil radiator circuit connected to the tractor's hydraulic system, with an oil radiator installed inside the unit housing; and a fan installed inside the unit housing. The condenser, water radiator, and oil radiator are arranged side-by-side on the fan's outlet side. This integrated thermal management system for the tractor and the tractor can solve the problem of low space utilization in existing tractor cooling systems.

Description

Technical Field

[0001] This application relates to the field of agricultural machinery thermal management system technology, and in particular to an integrated thermal management system for a tractor and the tractor itself. Background Technology

[0002] Currently, the front engine compartment design of traditional fuel-powered tractors generally suffers from insufficient space. To achieve the transition from fuel-powered to electric power, it is essential to ensure that the tractor's engine compartment has sufficient space.

[0003] However, the cooling components in existing fuel-fired tractors occupy a large space, and the batteries, motors, air conditioning and hydraulic oil cooling systems are usually arranged in a decentralized manner, which leads to a low overall space utilization rate. Utility Model Content

[0004] In view of this, the purpose of this application is to provide an integrated thermal management system for a tractor and a tractor, so as to solve the problem of low space utilization of the heat dissipation system in existing tractors.

[0005] According to a first aspect of this utility model, an integrated thermal management system for a tractor is provided, wherein the integrated thermal management system for the tractor includes: a unit housing; an air conditioning refrigerant circuit connected to the evaporator of the tractor's air conditioning system, the air conditioning refrigerant circuit being provided with a condenser, the condenser being disposed within the unit housing; a motor circuit connected to the tractor's motor system, the motor circuit being provided with a water radiator, the water radiator being disposed within the unit housing; an oil radiator circuit connected to the tractor's hydraulic system, the oil radiator circuit being provided with an oil radiator, the oil radiator being disposed within the unit housing; and a fan disposed within the unit housing, the condenser, the water radiator, and the oil radiator being arranged side by side on the air outlet side of the fan.

[0006] Preferably, the integrated thermal management system of the tractor further includes a heating circuit, the first end of which is connected to the air conditioning heater inlet of the tractor, and the second end of which is connected to the air conditioning heater outlet of the tractor. The heating circuit is provided with a first heating element and a first water pump, which are disposed inside the unit housing. The first heating element is disposed on the leeward side of the fan.

[0007] Preferably, the integrated thermal management system of the tractor further includes a battery circuit, a first end of which is connected to the battery inlet of the tractor, a second end of which is connected to the battery outlet of the tractor, and the battery circuit is provided with a second heating element and a second water pump, which are disposed inside the housing of the unit.

[0008] Preferably, the first end of the air conditioning refrigerant circuit is connected to the high-pressure port of the evaporator, the second end of the air conditioning refrigerant circuit is connected to the low-pressure port of the evaporator, and the air conditioning refrigerant circuit has a first branch and a second branch connected in parallel.

[0009] Preferably, the first branch is provided with the condenser and the compressor, the compressor is located on the side of the condenser near the second end of the air conditioning refrigerant circuit, and temperature and pressure sensors are provided at both ends of the compressor; the second branch is provided with a heat exchanger and an electromagnetic expansion valve, the heat exchanger is connected to the battery circuit, and the electromagnetic expansion valve is located on the side of the heat exchanger near the first end of the air conditioning refrigerant circuit.

[0010] Preferably, the first end of the oil distribution circuit is connected to the oil inlet of the hydraulic system, and the other two ends of the oil distribution circuit are connected to the oil outlet of the hydraulic system.

[0011] Preferably, the first end of the motor circuit is provided with multiple branches in parallel, and the multiple branches are respectively connected to the water inlet of several motors and the water inlet of the motor controller in the motor system. Each branch is provided with a third water pump and a one-way valve. The second end of the motor circuit is connected to the total water outlet of several motors and the motor controller.

[0012] Preferably, temperature sensors are provided at both ends of the motor circuit and at both ends of the motor water heater.

[0013] Preferably, the integrated thermal management system of the tractor further includes a thermal management controller, which is connected via circuitry to the temperature sensor, the temperature and pressure sensor, the electromagnetic expansion valve, the compressor, and the fan.

[0014] According to a second aspect of the present invention, a tractor is provided, wherein the tractor includes an integrated thermal management system for the tractor as described above.

[0015] This utility model discloses an integrated thermal management system for a tractor and the tractor itself. The air conditioning refrigerant circuit is connected to the evaporator of the tractor's air conditioning system. The air conditioning refrigerant circuit includes a condenser, which is housed within the unit housing. The motor circuit is connected to the tractor's motor system. The motor circuit includes a water-cooling component, which is also housed within the unit housing. The oil-cooling circuit is connected to the tractor's hydraulic system. The oil-cooling circuit includes an oil-cooling component, which is also housed within the unit housing. A fan is housed within the unit housing, and the condenser, water-cooling component, and oil-cooling component are arranged side-by-side on the fan's outlet side. This allows multiple cooling systems to share a single fan, effectively improving the overall space utilization of the cooling system and thus effectively solving the problem of low space utilization in existing tractor cooling systems.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the integrated thermal management system of a tractor according to the present invention.

[0019] Figure labels: 1-Air conditioning refrigerant circuit; 10-Condenser; 11-First branch; 12-Second branch; 13-Compressor; 14-Heat exchanger; 15-Solenoid expansion valve; 101-High-pressure port of evaporator; 102-Low-pressure port of evaporator; 2-Motor circuit; 20-Water distributor components; 21-Third water pump; 22-Check valve; 200-Branch circuit; 201-Water inlet of motor; 202-Water inlet of motor controller; 203-Main outlet; 3-Oil distributor circuit; 30- Oil distribution components; 301-Hydraulic system inlet; 302-Hydraulic system outlet; 4-Heating circuit; 41-First heating component; 42-First water pump; 401-Air conditioning heater inlet; 402-Air conditioning heater outlet; 5-Battery circuit; 51-Second heating component; 52-Second water pump; 501-Battery inlet; 502-Battery outlet; 6-Fan; 7-Thermal management controller; 71-Temperature sensor; 72-Temperature and pressure sensor; 8-Unit casing. Detailed Implementation

[0020] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0021] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0022] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0023] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0024] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0025] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0026] The terminology used herein is for the purpose of describing various examples only and is not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0027] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0028] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0029] like Figure 1 As shown, according to a first aspect of the present invention, an integrated thermal management system for a tractor is provided, the integrated thermal management system for the tractor including a unit housing 8, an air conditioning refrigerant circuit 1, a motor circuit 2, an oil radiator circuit 3, and a fan 6.

[0030] In the following description, reference will be made to Figure 1 The specific structure of the aforementioned components of the integrated thermal management system for the tractor and the connection relationship of the aforementioned components are described in detail.

[0031] like Figure 1As shown, in this embodiment, the unit housing 8 can be located between the front and rear wheels of the tractor to save internal space in the engine compartment. The air conditioning refrigerant circuit 1 can be connected to the evaporator of the tractor's air conditioning system. The air conditioning refrigerant circuit 1 can be equipped with a condenser 10, which is located inside the unit housing 8. The motor circuit 2 can be connected to the tractor's motor system. The motor circuit 2 can be equipped with a water radiator 20, which is located inside the unit housing 8. The oil radiator circuit 3 can be connected to the tractor's hydraulic system. The oil radiator circuit 3 can be equipped with an oil radiator 30, which is located inside the unit housing 8. The fan 6 can be located inside the unit housing 8, and the condenser 10, water radiator 20, and oil radiator 30 can be arranged side by side on the air outlet side of the fan 6, allowing multiple cooling systems to share the same fan 6, thereby greatly improving the overall space utilization of the cooling system.

[0032] Preferred, such as Figure 1 As shown, in this embodiment, the integrated thermal management system of the tractor may further include a heating circuit 4, which can be used to heat the cab. The first end of the heating circuit 4 can be connected to the tractor's air conditioning heater inlet 401 (i.e., the inlet of the air conditioning heater circuit), and the second end of the heating circuit 4 can be connected to the tractor's air conditioning heater outlet 402 (i.e., the outlet of the air conditioning heater circuit). The unit housing 8 may have pre-reserved interfaces at the corresponding first and second ends of the heating circuit 4. Preferably, the heating circuit 4 may be equipped with a first heating element 41 (e.g., PTC1) and a first water pump 42. The coolant used for heating the cab can be heated by the first heating element 41 and circulated to the air conditioning heater core by the first water pump 42, thereby transferring heat to the interior of the cab to achieve heating. The first heating element 41 and the first water pump 42 are located inside the unit housing 8, and the first heating element 41 may be located on the leeward side of the fan 6.

[0033] Preferred, such as Figure 1 As shown, in this embodiment, the integrated thermal management system of the tractor may further include a battery circuit 5. The first end of the battery circuit 5 may be connected to the tractor's battery inlet 501, and the second end of the battery circuit 5 may be connected to the tractor's battery outlet 502. The unit housing 8 may have pre-reserved interfaces at the corresponding first and second ends of the battery circuit 5. Preferably, the battery circuit 5 may be equipped with a second heating element 51 (e.g., PTC1) and a second water pump 52. The second heating element 51 is used to heat the battery coolant, and the second water pump 52 is used to circulate the coolant, thereby heating the battery cells. The second heating element 51 and the second water pump 52 are disposed within the unit housing 8.

[0034] Preferred, such as Figure 1As shown, in this embodiment, the first end of the air conditioning refrigerant circuit 1 can be connected to the high-pressure port 101 of the air conditioner's evaporator, and the second end of the air conditioning refrigerant circuit 1 can be connected to the low-pressure port 102 of the air conditioner's evaporator, so as to allow the coolant inside the air conditioner to circulate. The unit casing 8 may have pre-reserved interfaces at the corresponding first and second ends of the air conditioning refrigerant circuit 1. Preferably, the air conditioning refrigerant circuit 1 may have a first branch 11 and a second branch 12 connected in parallel.

[0035] Specifically, such as Figure 1 As shown, in this embodiment, the first branch 11 may be equipped with a condenser 10 and a compressor 13. The compressor 13 may be located on the side of the condenser 10 near the second end of the air conditioning refrigerant circuit 1, and temperature and pressure sensors 72 are installed at both ends of the compressor 13 to detect temperature and pressure. The coolant in the air conditioner is cooled by the condenser 10 and compressor 13, and the cool air is then transferred to the cab by the air conditioning evaporator to cool the cab.

[0036] Preferred, such as Figure 1 As shown, in this embodiment, a heat exchanger 14 and an electromagnetic expansion valve 15 can be installed on the second branch 12. The heat exchanger 14 connects to the battery circuit 5, allowing the battery circuit 5 to achieve cooling by sharing the condenser 10 and compressor 13 with the air conditioning refrigerant circuit 1. The coolant in the battery circuit 5 can exchange heat with the refrigerant in the second branch 12 at the heat exchanger 14, thereby cooling the battery cells. The heat exchanger 14 can integrate the electromagnetic expansion valve 15, which controls the flow of refrigerant in the second branch 12 by opening and closing. The capacity of the electromagnetic expansion valve 15 can be matched according to the battery's requirements. The electromagnetic expansion valve 15 can be located on the side of the heat exchanger 14 near the first end of the air conditioning refrigerant circuit 1.

[0037] Preferred, such as Figure 1 As shown, in this embodiment, the first end of the oil diffuser circuit 3 can be connected to the oil inlet 301 of the hydraulic system, and the second end of the oil diffuser circuit 3 can be connected to the oil outlet 302 of the hydraulic system. The unit casing 8 can have pre-reserved interfaces at the corresponding first and second ends of the oil diffuser circuit 3. The hydraulic system can circulate hydraulic oil through a hydraulic pump located outside the unit casing 8 to achieve cooling via the oil diffuser component 30.

[0038] Preferred, such as Figure 1As shown in the embodiment, the first end of the motor circuit 2 can be provided with multiple branch circuits 200 connected in parallel. These branch circuits 200 can be respectively connected to the water inlets 201 of several motors and the water inlet 202 of the motor controller in the motor system. Specifically, the number of branch circuits 200 can match the total number of motors and motor controllers in the motor system. Each branch circuit 200 can be equipped with a third water pump 21 and a one-way valve 22. When the motor requires cooling, the third water pump 21 can circulate the coolant to remove internal heat from the motor and motor controller, which is then dissipated to the outside by the water distribution component 20. The one-way valve 22 is used to restrict the flow direction of the coolant in the circuit, preventing inconsistencies between the pump head and the pressure drop inside the motor or motor controller, which could lead to cross-contamination. The second end of the motor circuit 2 can be connected to the main outlet 203 of several motors and motor controllers (that is, the outlets of all motors and motor controllers are combined into a main outlet 203). The unit casing 8 can have interfaces reserved at the first and second ends of the corresponding motor circuit 2.

[0039] In addition, preferred, such as Figure 1 As shown in the embodiment, temperature sensors 71 can also be provided at both ends of the motor circuit 2 and both ends of the motor water heater to detect the temperature of the coolant.

[0040] Furthermore, preferably, such as Figure 1 As shown, in this embodiment, the integrated thermal management system of the tractor may further include a thermal management controller 7 (i.e., TMS). The thermal management controller 7 can be connected to all the temperature sensors 71, temperature and pressure sensors 72, electromagnetic expansion valve 15, compressor 13, and fan 6 via circuitry, thereby controlling the opening and closing of the electromagnetic expansion valve 15, and controlling the speed and operation of the compressor 13 and fan 6 based on the detection results of the temperature sensors 71 and temperature and pressure sensors.

[0041] In addition, such as Figure 1 As shown, according to a second aspect of the present invention, a tractor is provided, the tractor including the integrated thermal management system of the tractor as described above. The integrated thermal management system of the tractor can be disposed between the front wheels and the rear wheels of the tractor, thereby saving space in the tractor's engine compartment.

[0042] During use, the tractor's integrated thermal management system allows multiple cooling systems to share the same fan 6, and the battery circuit 5 and the air conditioning refrigerant circuit 1 share the compressor 13 and condenser 10 for cooling, thus greatly improving space utilization. Simultaneously, the tractor's integrated thermal management system is located between the front and rear wheels, which not only improves space utilization and increases the overall power capacity but also reduces the number of parts and lowers the overall cost.

[0043] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An integrated thermal management system for a tractor, disposed in a tractor, characterized by, The integrated thermal management system of the tractor includes: Unit casing; An air conditioning refrigerant circuit is connected to the evaporator of the tractor's air conditioning system. The air conditioning refrigerant circuit is equipped with a condenser, which is located inside the unit casing. The motor circuit is connected to the motor system of the tractor, and the motor circuit is equipped with a water diffuser component, which is located inside the housing of the unit; An oil diffuser circuit, connected to the hydraulic system of the tractor, is provided with an oil diffuser component, which is disposed within the housing of the unit; and A fan is installed inside the unit housing, and the condenser, the water diffuser, and the oil diffuser are arranged side by side on the air outlet side of the fan.

2. The integrated thermal management system for a tractor vehicle of claim 1, wherein, The integrated thermal management system of the tractor also includes a heating circuit. The first end of the heating circuit is connected to the air conditioning heater inlet of the tractor, and the second end of the heating circuit is connected to the air conditioning heater outlet of the tractor. The heating circuit is equipped with a first heating element and a first water pump. The first heating element and the first water pump are installed inside the unit housing. The first heating element is installed on the leeward side of the fan.

3. The integrated thermal management system for a tractor vehicle of claim 1, wherein, The integrated thermal management system of the tractor also includes a battery circuit. The first end of the battery circuit is connected to the battery water inlet of the tractor, and the second end of the battery circuit is connected to the battery water outlet of the tractor. The battery circuit is equipped with a second heating element and a second water pump, which are disposed inside the housing of the unit.

4. The integrated thermal management system for a tractor vehicle of claim 3, wherein, The first end of the air conditioning refrigerant circuit is connected to the high-pressure port of the evaporator, and the second end of the air conditioning refrigerant circuit is connected to the low-pressure port of the evaporator. The air conditioning refrigerant circuit has a first branch and a second branch connected in parallel.

5. The integrated thermal management system for a tractor vehicle of claim 4, wherein, The first branch is equipped with the condenser and the compressor. The compressor is located on the side of the condenser near the second end of the air conditioning refrigerant circuit. Temperature and pressure sensors are installed at both ends of the compressor. A heat exchanger and an electromagnetic expansion valve are provided on the second branch. The heat exchanger is connected to the battery circuit, and the electromagnetic expansion valve is located on the side of the heat exchanger near the first end of the air conditioning refrigerant circuit.

6. The integrated thermal management system for a tractor vehicle of claim 1, wherein, The first end of the oil distribution circuit is connected to the oil inlet of the hydraulic system, and the second end of the oil distribution circuit is connected to the oil outlet of the hydraulic system.

7. The integrated thermal management system for a tractor vehicle of claim 1, wherein, The first end of the motor circuit is provided with multiple branch circuits in parallel. The multiple branch circuits are respectively connected to the water inlet of several motors and the water inlet of the motor controller in the motor system. Each branch circuit is provided with a third water pump and a one-way valve. The second end of the motor circuit is connected to the total water outlet of several motors and the motor controller.

8. The integrated thermal management system for a tractor vehicle of claim 5, wherein, Temperature sensors are installed at both ends of the motor circuit and at both ends of the motor water heater.

9. The integrated thermal management system for a tractor vehicle of claim 8, wherein, The tractor's integrated thermal management system also includes a thermal management controller, which is connected via circuitry to the temperature sensor, the temperature and pressure sensor, the electromagnetic expansion valve, the compressor, and the fan.

10. A tractor characterised in that, The tractor includes the integrated thermal management system of the tractor according to any one of claims 1 to 9.

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