Integrated heat dissipation system of electric loader

Abstract

The utility model discloses an integrated radiating system of an electric loader, which comprises a water-cooled radiator, the water pump is used for conveying internal circulating cooling liquid to the motor controller and / or the walking motor and / or the hydraulic motor and / or the battery pack and then conveying the internal circulating cooling liquid back to the water-cooled radiator so as to cool the motor controller and / or the walking motor and / or the hydraulic motor and / or the battery pack; the hydraulic oil radiator is used for cooling oil; the condenser is used for converting high-temperature and high-pressure superheated steam of the air conditioning system into a liquid working medium; the cooling fan group at least comprises a cooling fan; wherein the water-cooled radiator, the hydraulic oil radiator and the condenser share one set of radiating fan group. According to the integrated heat dissipation system of the electric loader, higher space utilization rate can be achieved, power loss is reduced, heat dissipation efficiency is guaranteed, a simpler structure is achieved, and dynamic adjustment of the heat dissipation fan set is facilitated so as to achieve the purposes of energy conservation and environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation device technology, and in particular to an integrated heat dissipation system for an electric loader. Background Technology

[0002] Electric loaders are engineering machinery that use electricity as a power source. They are mainly used for material handling, loading, unloading, and stacking operations, and are widely used in construction, mining, ports, logistics, and other fields. Compared with traditional diesel-powered loaders, electric loaders have significant advantages in environmental protection, energy efficiency, and noise control, and are one of the important directions for the electrification transformation of engineering machinery.

[0003] Electric loaders are equipped with various drive systems, such as motor and electronic control systems, hydraulic circuit systems, and air conditioning systems, along with battery packs to provide power. They generally require cooling for the motor controllers, travel motors, hydraulic motors, hydraulic oil, and battery packs included in these systems or components. For example, water-cooled radiators are used to cool the motor controllers, travel motors, hydraulic motors, and battery packs, while hydraulic oil coolers cool the hydraulic oil. Furthermore, these radiators and condensers require cooling fans for further cooling to ensure effective heat dissipation.

[0004] Existing electric loaders typically have separate cooling fans for water-cooled radiators, hydraulic oil radiators, and condensers. This means the motor and electronic control cooling systems, hydraulic oil cooling systems, and air conditioning cooling systems operate independently, leading to the following drawbacks: First, low space utilization, as independent cooling modules affect the overall machine's compactness; second, redundant energy consumption, with multiple cooling fan systems increasing power loss; third, limited cooling efficiency, as the separate layout easily leads to turbulent airflow; and fourth, difficult maintenance, as the split design results in complex piping and a higher failure rate. Utility Model Content

[0005] To address the above shortcomings, this utility model provides an integrated heat dissipation system for electric loaders, which can solve the problems of low space utilization, redundant energy consumption, limited heat dissipation efficiency, and difficult maintenance that exist in existing electric loaders equipped with multiple independent heat dissipation systems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An integrated cooling system for an electric loader includes:

[0008] A water-cooled radiator is equipped with a water pump to deliver its internal circulating coolant to the motor controller and / or the travel motor and / or the hydraulic motor and / or the battery pack and then back to the water-cooled radiator to achieve cooling of the motor controller and / or the travel motor and / or the hydraulic motor and / or the battery pack.

[0009] Hydraulic oil cooler, used to cool hydraulic oil;

[0010] A condenser is used to convert high-temperature, high-pressure superheated vapor in an air conditioning system into a liquid working fluid.

[0011] A cooling fan assembly, which includes at least one cooling fan; wherein...

[0012] The water-cooled radiator, hydraulic oil radiator, and condenser share a common cooling fan assembly.

[0013] Furthermore, the electric loader integrated cooling system also includes a mounting bracket, on which the water-cooled radiator, hydraulic oil radiator, condenser and cooling fan assembly are all mounted, and the water-cooled radiator and hydraulic oil radiator are located between the condenser and cooling fan assembly to achieve a stacked structure.

[0014] Furthermore, the water-cooled radiator and the hydraulic oil radiator are arranged side by side on the same plane.

[0015] Furthermore, there are multiple cooling fans, and the multiple cooling fans are arranged in an array.

[0016] Furthermore, the water pump includes a first water pump and a second water pump. The first water pump is used to send circulating coolant to the motor controller and / or the travel motor and / or the hydraulic motor and then back to the water-cooled radiator to achieve cooling of the motor controller and / or the travel motor and / or the hydraulic motor. The second water pump is used to send circulating coolant to the battery pack and then back to the water-cooled radiator to achieve cooling of the battery pack.

[0017] Furthermore, a cooler for cooling the circulating coolant is provided on the circuit of the water-cooled radiator and the circulating coolant of the motor controller and / or the walking motor and / or the hydraulic motor and / or the battery pack.

[0018] Furthermore, the cooler is connected to the circuit of the air conditioning system to cool the circulating coolant using the refrigerant of the air conditioning system.

[0019] Furthermore, the water-cooled radiator is equipped with a temperature sensor at the inlet and / or outlet of the circulating coolant pipes.

[0020] Furthermore, the condenser is equipped with a liquid receiver.

[0021] Furthermore, the water-cooled radiator is equipped with an expansion tank.

[0022] Compared with the prior art, the beneficial effects of this utility model are: the integrated heat dissipation system of the electric loader of this utility model realizes the heat dissipation of water-cooled radiator, hydraulic oil radiator and condenser through a set of cooling fan group, which can achieve higher space utilization, reduce power loss, ensure heat dissipation efficiency, and realize a simpler structure, and facilitate the dynamic adjustment of cooling fan group to achieve the purpose of energy saving and environmental protection. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0024] Figure 1 This is a schematic diagram of the structure of a preferred embodiment of the integrated heat dissipation system for an electric loader, taken from one perspective.

[0025] Figure 2 This is a structural schematic diagram from another perspective of a preferred embodiment of the integrated heat dissipation system for an electric loader according to this utility model;

[0026] Figure 3 An exploded view of a preferred embodiment of the integrated heat dissipation system for an electric loader according to this utility model;

[0027] Figure 4 This is a schematic diagram illustrating the implementation of the integrated heat dissipation system for an electric loader according to this utility model.

[0028] The markings shown in the diagram are as follows: 10-Water-cooled radiator; 11-First water pump; 12-Second water pump; 20-Hydraulic oil radiator; 30-Condenser; 31-Reservoir; 40-Cooling fan assembly; 41-Cooling fan; 50-Mounting bracket; 60-Cooler; 71-Motor controller; 72-Walking motor; 73-Hydraulic motor; 74-Battery pack; 75-Tipping cylinder; 76-Arm cylinder; 77-Working pump; 78-Oil tank; 79-Multi-way valve; 80-Air conditioning system; 81-Electric compressor; 90-Expansion tank. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] Please refer to Figures 1 to 4 A preferred embodiment of this utility model provides an integrated heat dissipation system for an electric loader, which mainly includes a water-cooled radiator 10, a hydraulic oil radiator 20, a condenser 30, a cooling fan assembly 40, and a mounting bracket 50.

[0033] The water-cooled radiator 10 is equipped with a water pump to deliver its internal circulating coolant to components such as the motor controller 71, the walking motor 72, the hydraulic motor 73, and the battery pack 74, and then back to the water-cooled radiator 10 to achieve cooling of the motor controller 71, the walking motor 72, the hydraulic motor 73, and the battery pack 74.

[0034] The hydraulic oil cooler 20 is used to cool the oil. For example, in a loader, the tipping cylinder 75 and the boom cylinder 76 are used to control the tipping of the bucket and the boom. The working pump 77 sends the oil from the tank 78 to the tipping cylinder 75 and / or the boom cylinder 76 through the multi-way valve 79, and then into the hydraulic oil cooler 20 to cool the oil.

[0035] The condenser 30 is used to convert the high-temperature and high-pressure superheated vapor of the air conditioning system 80 into a liquid working fluid. In one exemplary embodiment, the air conditioning system 80 first uses an electric compressor 81 to strongly compress the low-temperature and low-pressure vapor from the evaporator outlet to increase its pressure and temperature, forming high-temperature and high-pressure superheated vapor. Subsequently, these strongly compressed gases enter the condenser 30 and release a large amount of energy hidden inside, becoming a liquid working fluid (usually Freon). At the same time, it also becomes cooler, achieving refrigeration. The liquid working fluid then returns to the air conditioning system 80 for circulation.

[0036] The cooling fan assembly 40 includes at least one cooling fan 41 for cooling the water-cooled radiator 10, the hydraulic oil radiator 20, and the condenser 30. The water-cooled radiator 10, the hydraulic oil radiator 20, and the condenser 30 share a single cooling fan assembly 40. Using a single cooling fan assembly 40 to cool the water-cooled radiator 10, the hydraulic oil radiator 20, and the condenser 30 offers several advantages: first, it improves space utilization and makes the overall cooling module more compact; second, a single fan system reduces power loss; third, a single fan system is less prone to turbulent airflow, ensuring efficient cooling; and fourth, the integrated cooling system design simplifies the structure, reduces piping, and lowers the failure rate.

[0037] In a preferred embodiment, the water-cooled radiator 10, the hydraulic oil radiator 20, the condenser 30, and the cooling fan assembly 40 are all mounted on the mounting bracket 50, with the water-cooled radiator 10 and the hydraulic oil radiator 20 positioned between the condenser 30 and the cooling fan assembly 40 to achieve a stacked structure. The negative pressure airflow from the cooling fan assembly 40 drives the airflow through the water-cooled radiator 10, the hydraulic oil radiator 20, and the condenser 30. Specifically, the airflow is driven from one side of the condenser 30, passing through the condenser 30 and the water-cooled radiator 10 and the hydraulic oil radiator 20. The airflow passes over the cooling fins on these components, carrying away heat and thus achieving heat dissipation for the water-cooled radiator 10, the hydraulic oil radiator 20, and the condenser 30, ensuring their effective operation.

[0038] The water-cooled radiator 10 and the hydraulic oil radiator 20 are arranged side by side on the same plane. This side-by-side arrangement can be vertical or horizontal. The condenser 30 and the cooling fan assembly 40 are located on both sides of the water-cooled radiator 10 and the hydraulic oil radiator 20.

[0039] The cooling fan assembly 40 comprises multiple cooling fans 41 arranged in an array on a single plane. In an exemplary embodiment, the cooling fan assembly 40 may have four cooling fans 41 arranged in a grid pattern, covering both the water-cooled radiator 10 and the hydraulic oil radiator 20. In the exemplary embodiment, the water-cooled radiator 10 and the hydraulic oil radiator 20 are arranged side-by-side, with two cooling fans primarily covering the water-cooled radiator 10 and two cooling fans primarily covering the hydraulic oil radiator 20. All four cooling fans 41 also cover the condenser 30. The speed or operation of each cooling fan 41 can be adjusted according to actual use to achieve dynamic adjustment of the cooling fan assembly for energy saving and environmental protection.

[0040] The water pump includes a first water pump 11 and a second water pump 12. The first water pump 11 is used to sequentially send circulating coolant to the motor controller 71, the travel electric motor 72 and the hydraulic motor 73 and then back to the water-cooled radiator 10 to achieve cooling of the motor controller 71, the travel electric motor 72 and the hydraulic motor 73. The second water pump 12 is used to send circulating coolant to the battery pack 74 and then back to the water-cooled radiator 10 to achieve cooling of the battery pack 74.

[0041] In a preferred embodiment, a cooler 60 for cooling the circulating coolant is provided in the circuit between the water-cooled radiator 10 and the circulating coolant of the motor controller 71 and / or the travel motor 72 and / or the hydraulic motor 73 and / or the battery pack 74. In an exemplary embodiment, a cooler 60 for cooling the circulating coolant is provided in the circuit between the water-cooled radiator 10 and the circulating coolant of the battery pack 74. The cooling of the circulating coolant by the cooler 60 is then returned to the water-cooled radiator 10 to achieve cooling of the circulating coolant and ensure heat dissipation effect.

[0042] The cooler 60 is connected to the circuit of the air conditioning system 80 to use the refrigerant of the air conditioning system to cool the circulating coolant. In other words, the refrigerant of the cooler 60 is obtained through the air conditioning system 80, and the configured air conditioning system is used directly without the need to introduce new refrigerant.

[0043] Preferably, the condenser 30 is equipped with a liquid receiver 31, which is connected to the circuit of the air conditioning system 80 through the liquid receiver 31. The condenser 30 absorbs the moisture in the refrigerant of the air conditioning system 80 to achieve liquid storage and store excess refrigerant in the system.

[0044] The water-cooled radiator 10 is equipped with an expansion tank 90, which is bolted to the mounting bracket 50 and connected to the water-cooled radiator 10. The expansion tank 90 accommodates the volume changes of the coolant due to thermal expansion and contraction, regulates the system pressure of the water-cooled radiator 10, and ensures the stable operation of the cooling system. Specifically, when the coolant expands due to heat, causing the system pressure to rise, the expansion tank 90 absorbs the excess coolant to prevent damage to pipes or components due to overpressure. When the coolant cools down and contracts, the expansion tank 90 replenishes the coolant to prevent negative pressure from causing air to enter or water pump cavitation.

[0045] The water-cooled radiator 10 is equipped with a temperature sensor at the inlet and / or outlet of the circulating coolant pipes to detect the temperature of the circulating coolant at these inlets. The hydraulic oil radiator 20 is equipped with a temperature sensor at the outlet of its oil pipe to detect the temperature of the oil at this outlet. A temperature sensor is installed on the pipeline in front of the electric compressor 81 to detect the temperature of the low-temperature, low-pressure steam supplied by the evaporator. Each temperature sensor is electrically connected to a controller and transmits the detected temperature signal to the controller. The controller can then control each cooling fan 41 of the cooling fan assembly 40 according to the detected temperature, such as adjusting the speed or starting / stopping each cooling fan 41, achieving dynamic adjustment for energy saving and environmental protection.

[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An electrically powered loader integrated heat dissipation system, characterized by, Including: A water-cooled radiator (10) is equipped with a water pump to send its internal circulating coolant to the motor controller and / or the travel motor and / or the hydraulic motor and / or the battery pack and then back to the water-cooled radiator (10) to achieve cooling of the motor controller and / or the travel motor and / or the hydraulic motor and / or the battery pack. Hydraulic oil radiator (20), which is used to cool the oil; Condenser (30), which is used to convert high-temperature and high-pressure superheated steam of the air conditioning system into liquid working fluid; A cooling fan assembly (40) comprising at least one cooling fan (41); wherein, The water-cooled radiator (10), hydraulic oil radiator (20) and condenser (30) share a set of cooling fan assembly (40).

2. The integrated heat dissipation system for electric loaders according to claim 1, characterized in that, It also includes a mounting bracket (50), on which the water-cooled radiator (10), hydraulic oil radiator (20), condenser (30) and cooling fan assembly (40) are all mounted, and the water-cooled radiator (10) and hydraulic oil radiator (20) are located between the condenser (30) and cooling fan assembly (40) to achieve a stacked structure.

3. The integrated heat dissipation system for electric loaders according to claim 2, characterized in that, The water-cooled radiator (10) and the hydraulic oil radiator (20) are arranged side by side on the same plane.

4. The integrated heat dissipation system for electric loaders according to claim 2, characterized in that, There are multiple cooling fans (41), and the multiple cooling fans (41) are arranged in an array.

5. The integrated heat dissipation system for electric loaders according to claim 1, characterized in that, The water pump includes a first water pump (11) and a second water pump (12). The first water pump (11) is used to send circulating coolant to the motor controller and / or the walking motor and / or the hydraulic motor and then back to the water-cooled radiator (10) to achieve cooling of the motor controller and / or the walking motor and / or the hydraulic motor. The second water pump (12) is used to send circulating coolant to the battery pack and then back to the water-cooled radiator (10) to achieve cooling of the battery pack.

6. The integrated heat dissipation system for electric loaders according to claim 1 or 5, characterized in that, The water-cooled radiator (10) is equipped with a cooler (60) for cooling the circulating coolant in the circuit of the circulating coolant of the motor controller and / or the walking motor and / or the hydraulic motor and / or the battery pack.

7. The integrated heat dissipation system for electric loaders according to claim 6, characterized in that, The cooler (60) is connected to the circuit of the air conditioning system to cool the circulating coolant using the refrigerant of the air conditioning system.

8. The integrated heat dissipation system for electric loaders according to claim 1, characterized in that, The water-cooled radiator (10) is equipped with a temperature sensor at the inlet of the pipe for the circulating coolant to enter and / or exit.

9. The integrated heat dissipation system for electric loaders according to claim 1, characterized in that, The condenser (30) is equipped with a liquid receiver (31).

10. The integrated heat dissipation system for electric loaders according to claim 1, characterized in that, The water-cooled radiator (10) is equipped with an expansion tank (90).

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