Operation machine, heat dissipation method and heat dissipation system thereof and storage medium

Abstract

The invention relates to the technical field of operation machines, in particular to an operation machine, a heat dissipation method thereof, a heat dissipation system and a storage medium. The heat dissipation method comprises the steps that the current temperature, the upper limit temperature threshold value and the lower limit temperature threshold value corresponding to each piece to be subjected to heat dissipation, and the current oil temperature, the upper limit oil temperature threshold value and the lower limit oil temperature threshold value corresponding to hydraulic oil are obtained; the current liquid temperature, the upper limit liquid temperature threshold value and the lower limit liquid temperature threshold value correspond to the cooling liquid; determining a first expected rotating speed, a second expected rotating speed and a third expected rotating speed according to the current temperature, the upper limit temperature threshold, the lower limit temperature threshold, the current oil temperature, the upper limit oil temperature threshold, the lower limit oil temperature threshold, the current liquid temperature, the upper limit liquid temperature threshold and the lower limit liquid temperature threshold corresponding to each part to be cooled; and determining a target rotating speed corresponding to each heat dissipation device according to the three expected rotating speeds, and controlling the corresponding heat dissipation device to operate at the corresponding target rotating speed. According to the heat dissipation method, the heat dissipation rotating speed can be adjusted according to heat dissipation requirements, and energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of operating machinery, and in particular to an operating machinery and a heat dissipation method, a heat dissipation system and a storage medium thereof. Background Art

[0002] Operating machinery usually includes working devices such as rotating drive parts, battery packs, drive controllers and hydraulic systems. These working devices will generate a large amount of heat during operation. If the heat cannot be dissipated in time, the local temperature of the working device will be too high, which may easily cause irreversible deformation of low-melting-point materials or cause damage to the circuit, thereby affecting the performance and life of the operating machinery.

[0003] The energy consumed by the cooling system in operating machinery cannot be underestimated. In existing operating machinery, the cooling fan and cooling water pump are controlled in a single way, mostly by start-stop control. The start-stop control will cause the cooling system to have a large energy loss problem. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a working machine and a heat dissipation method, a heat dissipation system and a storage medium thereof, so as to solve the technical problem of high heat dissipation energy consumption of the heat dissipation device existing in the prior art.

[0005] In order to achieve the above-mentioned object, the first aspect of the present invention provides a heat dissipation method for a working machine, the heat dissipation method comprising:

[0006] Obtain the current temperature, upper temperature threshold, and lower temperature threshold corresponding to each heat dissipation component, the current oil temperature, upper oil temperature threshold, and lower oil temperature threshold corresponding to the hydraulic oil, and the current liquid temperature, upper liquid temperature threshold, and lower liquid temperature threshold corresponding to the coolant;

[0007] Determine a first desired rotational speed corresponding to each heat dissipation component, a second desired rotational speed corresponding to the hydraulic oil, and a third desired rotational speed corresponding to the coolant according to the current temperature, the upper temperature threshold, the lower temperature threshold, the current oil temperature, the upper temperature threshold, the lower temperature threshold, and the current liquid temperature, the upper temperature threshold, and the lower temperature threshold corresponding to each heat dissipation component;

[0008] Determine a target speed corresponding to each heat dissipation device according to each first expected speed, the second expected speed, and the third expected speed;

[0009] Each heat dissipation device is controlled to operate at a corresponding target speed.

[0010] In an embodiment of the present invention, according to the current temperature, upper temperature threshold, lower temperature threshold, current oil temperature, upper oil temperature threshold, lower oil temperature threshold, and current liquid temperature, upper liquid temperature threshold, lower liquid temperature threshold corresponding to each heat dissipation component, the step of determining the first expected speed corresponding to each heat dissipation component, the second expected speed corresponding to the hydraulic oil, and the third expected speed corresponding to the coolant includes: when the current temperature of the heat dissipation component is less than the lower temperature threshold, determining the first expected speed to be zero; when the current oil temperature is less than the lower oil temperature threshold, determining the second expected speed to be zero; when the current liquid temperature is less than the lower liquid temperature threshold, determining the third expected speed to be zero;

[0011] In an embodiment of the present invention, the step of determining the first expected speed corresponding to each component to be cooled, the second expected speed corresponding to the hydraulic oil, and the third expected speed corresponding to the coolant according to the current temperature, upper temperature threshold, lower temperature threshold, current oil temperature, upper oil temperature threshold, lower oil temperature threshold, and current liquid temperature, upper liquid temperature threshold, lower liquid temperature threshold corresponding to each component to be cooled, also includes: when the current temperature of the component to be cooled is greater than or equal to the upper temperature threshold, determining the first expected speed as the rated speed of the heat dissipation device corresponding to the component to be cooled; when the current oil temperature is greater than or equal to the upper oil temperature threshold, determining the second expected speed as the rated speed of the heat dissipation device corresponding to the hydraulic oil; when the current liquid temperature is greater than or equal to the upper liquid temperature threshold, determining the third expected speed as the rated speed of the heat dissipation device corresponding to the coolant.

[0012] In an embodiment of the present invention, according to the current temperature, the upper temperature threshold, the lower temperature threshold, the current oil temperature, the upper oil temperature threshold, the lower oil temperature threshold, and the current liquid temperature, the upper liquid temperature threshold, and the lower liquid temperature threshold corresponding to each heat dissipation component to be cooled, the step of determining the first expected speed corresponding to each heat dissipation component to be cooled, the second expected speed corresponding to the hydraulic oil, and the third expected speed corresponding to the coolant further includes:

[0013] When the current temperature of the heat dissipation element is greater than or equal to the lower temperature threshold and less than the upper temperature threshold, the first expected rotation speed is determined according to the following formula (a):

[0014] N 1 =A+(BA)*(T a -T amin ) / (T amax -T amin ) (a);

[0015] Among them, N 1 is the first desired speed, A is the minimum speed of the heat sink corresponding to the heat sink to be cooled, B is the rated speed of the heat sink corresponding to the heat sink to be cooled, T a is the current temperature of the heat sink, Tamax is the upper temperature threshold, T amin is the lower temperature threshold;

[0016] When the current oil temperature is greater than or equal to the lower oil temperature threshold and less than the upper oil temperature threshold, the second desired speed is determined according to the following formula (b):

[0017] N 2 =C+(DC)*(T b -T bmin ) / (T bmax -T bmin ) (b);

[0018] Among them, N 2 is the second desired speed, C is the minimum speed of the heat sink corresponding to the hydraulic oil, D is the rated speed of the heat sink corresponding to the hydraulic oil, T b is the current temperature of the hydraulic oil, T bmax is the upper oil temperature threshold, T bmin is the lower oil temperature threshold;

[0019] When the current liquid temperature is greater than or equal to the lower liquid temperature threshold and less than the upper liquid temperature threshold, the third desired speed is determined according to the following formula (c):

[0020] N 3 =C+(DC)*(T c -T cmin ) / (T cmax -T cmin ) (c);

[0021] Among them, N 3 is the third desired speed, E is the minimum speed of the heat sink corresponding to the coolant, F is the rated speed of the heat sink corresponding to the coolant, T c is the current temperature of the coolant, T cmax is the upper liquid temperature threshold, T cmin is the lower liquid temperature threshold.

[0022] In an embodiment of the present invention, the heat dissipation components include multiple motors and multiple motor controllers, the motors and motor controllers dissipate heat through water cooling fans and a liquid cooling system, the liquid cooling system includes a water pump, the hydraulic oil dissipates heat through the oil cooling fan, and the coolant dissipates heat through the water cooling fan. According to each first expected speed, the second expected speed and the third expected speed, the step of determining the target speed corresponding to each heat dissipation device includes: determining a first maximum speed among multiple first expected speeds; determining the first maximum speed as the target speed of the water pump; determining the second expected speed as the target speed of the oil cooling fan; determining the second maximum speed among multiple first expected speeds and the third expected speed; and determining the second maximum speed as the target speed of the water cooling fan.

[0023] In an embodiment of the present invention, the heat dissipation method also includes the following steps: receiving a first control instruction input from the outside; determining a target heat dissipation device corresponding to the first control instruction; and when the first control instruction is a high altitude mode instruction or a full speed instruction, controlling the target heat dissipation device to perform a heat dissipation operation at a rated speed.

[0024] In an embodiment of the present invention, one or more of the multiple heat dissipation devices are heat dissipation fans, and the heat dissipation method also includes the following steps: receiving a second control instruction input from the outside; determining a target heat dissipation fan corresponding to the second control instruction; and when the second control instruction is a reverse instruction, controlling the target heat dissipation fan to rotate in the opposite direction at a rated speed for a preset time period.

[0025] A second aspect of the present invention provides a heat dissipation system for a working machine, wherein the working machine includes a plurality of parts to be cooled and the heat dissipation system includes: a memory configured to store instructions; a plurality of temperature detection elements, respectively used to detect the temperature of each part to be cooled, hydraulic oil and coolant of the working machine; a plurality of heat dissipation devices, each heat dissipation device being used to dissipate heat from the parts to be cooled or the hydraulic oil or the coolant; and a processor, configured to call instructions from the memory and to implement the above-mentioned heat dissipation method for the working machine when executing the instructions.

[0026] A third aspect of the present invention provides a working machine, comprising a plurality of heat dissipation components; a coolant storage component storing oil coolant; a hydraulic oil tank storing hydraulic oil; and the heat dissipation system of the working machine.

[0027] A fourth aspect of the present invention provides a machine-readable storage medium having instructions stored thereon, the instructions being used to enable a machine to execute the above-mentioned heat dissipation method for a working machine.

[0028] In the above technical solution, a heat dissipation method for an operating machine is provided, and the operating method includes obtaining the current temperature, upper temperature threshold, and lower temperature threshold corresponding to each heat dissipation component, the current oil temperature, upper oil temperature threshold, and lower oil temperature threshold corresponding to the hydraulic oil, and the current liquid temperature, upper liquid temperature threshold, and lower liquid temperature threshold corresponding to the coolant. According to the current temperature, upper temperature threshold, and lower temperature threshold corresponding to each heat dissipation component, the current oil temperature, upper oil temperature threshold, and lower oil temperature threshold, and the current liquid temperature, upper liquid temperature threshold, and lower liquid temperature threshold, the first expected speed corresponding to each heat dissipation component, the second expected speed corresponding to the hydraulic oil, and the third expected speed corresponding to the coolant are determined. According to each first expected speed, second expected speed, and third expected speed, the target speed corresponding to each heat dissipation device is determined. Each heat dissipation device is controlled to operate at the corresponding target speed. By adopting the above heat dissipation method, the corresponding heat dissipation device can be controlled to operate at the corresponding target speed in a targeted manner according to the current temperature of each heat dissipation component, hydraulic oil, and coolant, thereby reducing energy loss.

[0029] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0031] Figure 1 A schematic diagram of a process flow of a heat dissipation method for a working machine according to an embodiment of the present invention is schematically shown;

[0032] Figure 2 It is a schematic structural diagram of a heat dissipation system for a working machine provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of the present invention are in compliance with the relevant provisions of national laws and regulations. In the embodiments of the present invention, some existing solutions in the industry such as certain software, components, and models may be mentioned, which should be considered as exemplary, and their purpose is only to illustrate the feasibility of the implementation of the technical solution of the present invention, but it does not mean that the applicant has or will necessarily use the solution.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] Figure 1 The schematic diagram of a heat dissipation method of a working machine according to an embodiment of the present invention is shown. The working machine provided by the embodiment of the present invention includes a plurality of heat dissipation parts to be cooled, a hydraulic oil tank storing hydraulic oil, a coolant storage part storing coolant, and a plurality of heat dissipation devices, and the heat dissipation devices can dissipate heat from the heat dissipation parts or the coolant or the hydraulic oil to prevent the heat dissipation parts, the hydraulic oil or the coolant from being too high. Figure 1 As shown, an embodiment of the present invention provides a heat dissipation method for a working machine, and the heat dissipation method may include the following steps:

[0038] S101, obtaining the current temperature, upper temperature threshold, and lower temperature threshold corresponding to each heat dissipation component, the current oil temperature, upper oil temperature threshold, and lower oil temperature threshold corresponding to the hydraulic oil, and the current liquid temperature, upper liquid temperature threshold, and lower liquid temperature threshold corresponding to the coolant;

[0039] S102, determining a first desired rotational speed corresponding to each heat dissipation component, a second desired rotational speed corresponding to the hydraulic oil, and a third desired rotational speed corresponding to the coolant according to the current temperature, the upper temperature threshold, the lower temperature threshold, the current oil temperature, the upper temperature threshold, the lower temperature threshold, and the current liquid temperature, the upper temperature threshold, and the lower temperature threshold corresponding to each heat dissipation component;

[0040] S103, determining a target speed corresponding to each heat dissipation device according to each first expected speed, second expected speed, and third expected speed;

[0041] S104: Control each heat dissipation device to operate at a corresponding target rotation speed.

[0042] During the operation of the operating machinery, the current temperature, upper temperature threshold, and lower temperature threshold corresponding to each heat dissipation component can be obtained. The hydraulic system has the corresponding current oil temperature, upper oil temperature threshold, and lower oil temperature threshold, as well as the current liquid temperature, upper liquid temperature threshold, and lower liquid temperature threshold corresponding to the coolant. Among them, the lower temperature threshold, the lower oil temperature threshold, and the lower liquid temperature threshold are the starting temperatures at which the heat dissipation operation needs to be performed. The upper temperature threshold, the upper oil temperature threshold, and the upper liquid temperature threshold are high temperature warning temperatures, and the heat dissipation component or hydraulic oil or coolant needs to be fully cooled at full power to quickly cool down. According to the current temperature, upper temperature threshold, and lower temperature threshold corresponding to each heat dissipation component, the first expected speed of each heat dissipation component can be determined; according to the current oil temperature, the upper oil temperature threshold, and the lower oil temperature threshold, the second expected speed corresponding to the hydraulic oil can be determined; according to the current liquid temperature, the upper liquid temperature threshold, and the lower liquid temperature threshold, the third expected speed corresponding to the coolant can be determined. According to each first expected speed, the target speed of the heat sink corresponding to the heat dissipation element can be determined, according to the second expected speed, the target speed of the heat sink corresponding to the hydraulic oil can be determined, and according to the third expected speed, the target speed of the heat sink corresponding to the coolant can be determined. Each heat sink is controlled to operate at the corresponding target speed. By adopting the above heat dissipation method, the speed of the corresponding heat sink can be adjusted based on the current temperature of the heat dissipation element, the hydraulic oil and the coolant, thereby making the heat dissipation operation more targeted and efficient, and reducing the energy loss of the heat sink operation.

[0043] In one embodiment, the steps of determining the first expected speed corresponding to each component to be cooled, the second expected speed corresponding to the hydraulic oil, and the third expected speed corresponding to the coolant according to the current temperature, upper temperature threshold, lower temperature threshold, current oil temperature, upper oil temperature threshold, lower oil temperature threshold, and current liquid temperature, upper liquid temperature threshold, lower liquid temperature threshold corresponding to each component to be cooled include: when the current temperature of the component to be cooled is less than the lower temperature threshold, determining the first expected speed to be zero; when the current oil temperature is less than the lower oil temperature threshold, determining the second expected speed to be zero; when the current liquid temperature is less than the lower liquid temperature threshold, determining the third expected speed to be zero; when the current temperature of the component to be cooled is greater than or equal to the upper temperature threshold, determining the first expected speed to be the rated speed of the heat dissipation device corresponding to the component to be cooled; when the current oil temperature is greater than or equal to the upper oil temperature threshold, determining the second expected speed to be the rated speed of the heat dissipation device corresponding to the hydraulic oil; when the current liquid temperature is greater than or equal to the upper liquid temperature threshold, determining the third expected speed to be the rated speed of the heat dissipation device corresponding to the coolant.

[0044] When the current temperature of the heat dissipation component is less than the lower temperature threshold, or the current oil temperature is less than the lower oil temperature threshold, or the current liquid temperature is less than the lower liquid temperature threshold, it means that the temperature of the heat dissipation component, hydraulic oil or coolant itself is low and no heat dissipation is required, so it can be determined that their corresponding expected speed is zero, that is, no heat dissipation operation is performed. When the current temperature of the heat dissipation component is greater than or equal to the upper temperature threshold, or the current oil temperature is greater than or equal to the upper oil temperature threshold, or the current liquid temperature is greater than or equal to the upper liquid temperature threshold, it means that the temperature of the heat dissipation component, hydraulic oil or coolant itself has reached the warning temperature, and the heat dissipation component, hydraulic oil or coolant needs to be quickly cooled, so it can be determined that their corresponding expected speed is the rated speed of the heat dissipation device.

[0045] In a specific embodiment, the number of the heat dissipation components to be cooled can be multiple, and the operating machine also includes a coolant circulation system, in which coolant circulates, and the coolant circulation system includes a water pump that controls the flow rate of the coolant. By controlling the speed of the water pump, the heat dissipation efficiency of the coolant circulation system can be adjusted, thereby accurately dissipating the heat of the heat dissipation components. Among them, the upper limit temperature threshold corresponding to the heat dissipation component to be cooled can be the highest value in the operating temperature range of the heat dissipation component to be cooled, and the lower limit temperature threshold corresponding to the heat dissipation component to be cooled can be the optimal temperature value for the normal operation of the heat dissipation component to be cooled.

[0046] In a specific embodiment, the heat dissipation device corresponding to the hydraulic oil is an oil heat dissipation fan. By adjusting the speed of the oil heat dissipation fan, the heat dissipation efficiency of the hydraulic oil can be adjusted, thereby accurately and efficiently adjusting the temperature of the hydraulic oil. The upper limit oil temperature threshold can be the highest value of the recommended operating temperature range of the hydraulic oil, and the lower limit oil temperature threshold can be the optimal operating temperature value of the hydraulic oil.

[0047] In a specific embodiment, the heat dissipation device corresponding to the coolant is a water radiator fan. By adjusting the speed of the water radiator fan, the heat dissipation efficiency of the coolant can be adjusted, thereby accurately and efficiently adjusting the temperature of the coolant. The upper limit liquid temperature threshold may be the highest value of the recommended operating temperature range of the coolant, and the lower limit liquid temperature threshold may be the optimal operating temperature value of the coolant.

[0048] By adopting the above-mentioned heat dissipation method, the corresponding heat dissipation device can be controlled to stop performing the heat dissipation operation when the temperature of the heat dissipation component, hydraulic oil or coolant is low, and the corresponding heat dissipation device can be controlled to operate at the rated speed when the temperature of the heat dissipation component, hydraulic oil or coolant is high, so as to quickly dissipate heat and cool down, so that the heat dissipation device in the operating machinery responds quickly, adjusts accurately, and saves energy.

[0049] In one embodiment, according to the current temperature, upper temperature threshold, lower temperature threshold, current oil temperature, upper oil temperature threshold, lower oil temperature threshold, and current liquid temperature, upper liquid temperature threshold, lower liquid temperature threshold corresponding to each heat dissipation component, the step of determining the first expected speed corresponding to each heat dissipation component, the second expected speed corresponding to the hydraulic oil, and the third expected speed corresponding to the coolant further includes:

[0050] When the current temperature of the heat dissipation element is greater than or equal to the lower temperature threshold and less than the upper temperature threshold, the first expected rotation speed is determined according to the following formula (a):

[0051] N 1 =A+(BA)*(T a -T amin ) / (T amax -T amin ) (a);

[0052] Among them, N 1 is the first desired speed, A is the minimum speed of the heat sink corresponding to the heat sink to be cooled, B is the rated speed of the heat sink corresponding to the heat sink to be cooled, T a is the current temperature of the heat sink, T amax is the upper temperature threshold, T amin is the lower temperature threshold.

[0053] When the current oil temperature is greater than or equal to the lower oil temperature threshold and less than the upper oil temperature threshold, the second desired speed is determined according to the following formula (b):

[0054] N 2 =C+(DC)*(T b -T bmin ) / (T bmax -T bmin ) (b);

[0055] Among them, N 2 is the second desired speed, C is the minimum speed of the heat sink corresponding to the hydraulic oil, D is the rated speed of the heat sink corresponding to the hydraulic oil, T b is the current temperature of the hydraulic oil, T bmax is the upper oil temperature threshold, T bmin The lower oil temperature threshold.

[0056] When the current liquid temperature is greater than or equal to the lower liquid temperature threshold and less than the upper liquid temperature threshold, the third desired speed is determined according to the following formula (c):

[0057] N 3 =C+(DC)*(T c -T cmin ) / (T cmax -T cmin ) (c);

[0058] Among them, N 3 is the third desired speed, E is the minimum speed of the heat sink corresponding to the coolant, F is the rated speed of the heat sink corresponding to the coolant, T c is the current temperature of the coolant, T cmax is the upper liquid temperature threshold, T cmin The above heat dissipation method can accurately calculate the expected rotation speed of each heat dissipation device, and then accurately adjust each heat dissipation device, so that the heat dissipation device can be controlled more accurately and the heat dissipation effect can be better.

[0059] In one embodiment, the heat dissipation components include multiple motors and multiple motor controllers, the motors and motor controllers dissipate heat through water cooling fans and a liquid cooling system, the liquid cooling system includes a water pump, the hydraulic oil dissipates heat through the oil cooling fan, and the coolant dissipates heat through the water cooling fan. According to each first expected speed, second expected speed and third expected speed, the step of determining the target speed corresponding to each heat dissipation device includes: determining a first maximum speed among multiple first expected speeds; determining the first maximum speed as the target speed of the water pump; determining the second expected speed as the target speed of the oil cooling fan; determining the second maximum speed among multiple first expected speeds and the third expected speed; and determining the second maximum speed as the target speed of the water cooling fan.

[0060] Multiple motors and multiple motor controllers can all dissipate heat through water cooling fans and liquid cooling systems, and can obtain the first expected speed corresponding to each motor and each motor controller, and compare the above multiple first expected speeds to obtain the maximum speed. The maximum speed is determined as the target speed of the water pump in the liquid cooling system. The above heat dissipation method can fully dissipate heat for each motor and multiple motor controllers, preventing the temperature of local components in multiple motors and multiple motor controllers from being too high, causing abnormal operation and affecting the normal operation of the operating machinery.

[0061] In a specific embodiment, the liquid cooling system includes a cooling pipeline, a cooling tank storing coolant, and a water pump for pumping the coolant to circulate in the cooling pipeline. The cooling pipeline is in contact with multiple motors and multiple motor controllers, and can absorb the heat of the motors and motor controllers through contact. After determining the first maximum speed, the first maximum speed is determined as the speed of the water pump, and then the flow rate of the coolant in the cooling pipeline is adjusted.

[0062] In a specific embodiment, the rotation speed of the fan or water pump is adjusted by controlling the rotation speed of the rotating motor, thereby adjusting the heat dissipation efficiency. The processor can control the rotation speed of the rotating motor by controlling the duty cycle of the input current of the rotating motor, thereby adjusting the heat dissipation efficiency.

[0063] After determining the second expected speed, the second expected speed can be determined as the target speed of the oil cooling fan. After determining the third expected speed and multiple first expected speeds, the third expected speed and the second maximum speed among the multiple first expected speeds can be determined as the target speed of the water cooling fan. By adopting the above heat dissipation method, the speed of the oil cooling fan or the water cooling fan can be adjusted according to the actual heat dissipation requirements of multiple motors, multiple motor controllers, coolant and hydraulic oil, so as to achieve precise adjustment and reduce the energy consumption of the oil cooling fan or the water cooling fan.

[0064] In another embodiment, the plurality of first expected speeds all correspond to the speed regulation range of the water pump speed, and the third expected speed corresponds to the speed regulation range of the water scattering fan. The speed regulation ranges between the water pump and the water scattering fan differ greatly, so it is necessary to convert between the two values. Specifically, after determining the third expected speed and the plurality of first expected speeds, the plurality of fourth expected speeds can be determined respectively according to the plurality of first expected speeds and the preset corresponding relationship (such as a preset calculation formula, a preset table, etc.). The speed of the water scattering fan is determined by comparing the maximum speed among the plurality of fourth expected speeds and the third expected speed. The above method can make the speed regulation of the water scattering fan more accurate, and is suitable for scenarios where the speed regulation ranges of the water scattering fan and the water pump differ greatly, so that the above control method has a wider application range.

[0065] Furthermore, in order to ensure the efficient and stable operation of the cooling system, the preset correspondence can be obtained based on actual test data or theoretical calculations and stored in the processor for any time. When the processor receives a cooling demand signal, it will quickly calculate the corresponding fourth expected speed based on the preset correspondence and compare it with the third expected speed to determine the final water radiator fan speed. In addition, the cooling system also has self-learning and optimization functions, and can continuously adjust the preset correspondence according to actual operation data to achieve better cooling effect and energy consumption balance.

[0066] In one embodiment, the heat dissipation method further includes the following steps: receiving a first control instruction input from the outside; determining a target heat dissipation device corresponding to the first control instruction; and controlling the target heat dissipation device to perform a heat dissipation operation at a rated speed when the first control instruction is a high altitude mode instruction or a full speed instruction. The air in high altitude areas is thin, which will reduce the heat dissipation efficiency of air cooling. Therefore, in high altitude areas, it is necessary to control the target heat dissipation device to perform a heat dissipation operation at a rated speed. Specifically, when receiving the first control instruction input from the outside, the target heat dissipation device corresponding to the first control instruction can be determined first, and when the first control instruction corresponds to a high altitude mode instruction or a full speed instruction, the target heat dissipation device is controlled to perform a heat dissipation operation at a rated speed. Among them, the first control instruction can be a control instruction input by an operator to a control panel or a controller. The above heat dissipation method can quickly respond to the control instruction input from the outside, and adjust the speed of the target heat dissipation device in a targeted manner according to the actual heat dissipation mode.

[0067] In one embodiment, one or more of the plurality of heat dissipation devices are heat dissipation fans, and the heat dissipation method further comprises the following steps: receiving a second control instruction inputted from the outside; determining a target heat dissipation fan corresponding to the second control instruction; and, when the second control instruction is a reversal instruction, controlling the target heat dissipation fan to rotate in the reverse direction at a rated speed for a preset time period. Long-term rotation of the heat dissipation fan in the same direction will cause dust to accumulate on one side of the fan, affecting the normal operation of the heat dissipation fan, and it is necessary to clean the dust on the heat dissipation fan or reverse the fan to remove the dust. When the second control instruction inputted from the outside is received, the target heat dissipation fan corresponding to the second control instruction can be determined, and when the second control instruction is a reversal instruction, the target heat dissipation fan is controlled to rotate in the reverse direction at a rated speed for a preset time period to quickly remove the dust on the heat dissipation fan. Among them, the second control instruction can be a control instruction inputted by an operator to a control panel or a controller. By adopting the above heat dissipation method, the self-cleaning operation of the heat dissipation fan can be realized through a simple control logic, thereby improving the maintenance efficiency of the heat dissipation fan and reducing the maintenance cost.

[0068] In one embodiment, a heat dissipation system for a working machine is provided, such as Figure 2As shown, it is a structural schematic diagram of a heat dissipation system of a working machine provided according to an embodiment of the present invention. The working machine includes a plurality of heat dissipation parts to be cooled and, the heat dissipation system includes: a memory configured to store instructions; a plurality of temperature detection parts, respectively used to detect the temperature of each heat dissipation part, hydraulic oil and coolant of the working machine; a plurality of heat dissipation devices, each heat dissipation device is used to dissipate heat from the heat dissipation part or hydraulic oil or coolant; and a processor, configured to call instructions from the memory and to implement the above-mentioned heat dissipation method of the working machine when executing the instructions. The plurality of temperature detection parts can be used to detect the temperature of a plurality of hydraulic oils, coolants and a plurality of heat dissipation parts to be cooled respectively, so that the processor can obtain the current temperature of the hydraulic oil, coolant and each heat dissipation part to be cooled, and control the corresponding heat dissipation device to perform the corresponding heat dissipation operation based on the current temperature. In a specific embodiment, the plurality of heat dissipation devices include a first air-cooled heat dissipation device, a second air-cooled heat dissipation device and a liquid-cooled heat dissipation device. In a specific embodiment, the plurality of heat dissipation devices include an oil-dissipating fan for heat dissipation of hydraulic oil, a water-dissipating fan for heat dissipation of coolant and a liquid-cooled heat dissipation device for heat dissipation of a plurality of rotating drive parts and a plurality of drive controllers.

[0069] In one embodiment, a working machine is provided, the working machine comprising a plurality of heat dissipation components; a coolant storage component storing oil coolant; a hydraulic oil tank storing hydraulic oil; and a heat dissipation system of the working machine. In one embodiment, a machine-readable storage medium is provided, the machine-readable storage medium storing instructions for causing the machine to execute the heat dissipation method of the working machine.

[0070] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0071] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1A device that provides the functions specified in a block or multiple blocks.

[0072] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0073] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0074] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0075] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0076] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0077] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0078] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A heat dissipation method for an operating machine, characterized in that: The heat dissipation method comprises: Obtain the current temperature, upper temperature threshold, and lower temperature threshold corresponding to each heat dissipation component, the current oil temperature, upper oil temperature threshold, and lower oil temperature threshold corresponding to the hydraulic oil, and the current liquid temperature, upper liquid temperature threshold, and lower liquid temperature threshold corresponding to the coolant; Determine a first desired rotational speed corresponding to each heat dissipation component to be cooled, a second desired rotational speed corresponding to the hydraulic oil, and a third desired rotational speed corresponding to the coolant according to the current temperature, the upper temperature threshold, the lower temperature threshold, the current oil temperature, the upper oil temperature threshold, the lower oil temperature threshold, and the current liquid temperature, the upper liquid temperature threshold, and the lower liquid temperature threshold corresponding to each heat dissipation component to be cooled; Determine a target speed corresponding to each heat dissipation device according to each first expected speed, the second expected speed, and the third expected speed; Each heat dissipation device is controlled to operate at a corresponding target rotation speed.

2. The heat dissipation method for a working machine according to claim 1, characterized in that: The step of determining the first expected rotational speed corresponding to each heat dissipation component to be cooled, the second expected rotational speed corresponding to the hydraulic oil, and the third expected rotational speed corresponding to the coolant according to the current temperature, the upper temperature threshold, the lower temperature threshold, the current oil temperature, the upper oil temperature threshold, the lower oil temperature threshold, and the current liquid temperature, the upper liquid temperature threshold, and the lower liquid temperature threshold corresponding to each heat dissipation component to be cooled comprises: When the current temperature of the heat dissipation element to be cooled is less than the lower temperature threshold, determining that the first expected rotation speed is zero; When the current oil temperature is less than the lower oil temperature threshold, determining that the second expected speed is zero; When the current liquid temperature is less than the lower liquid temperature threshold, the third expected rotation speed is determined to be zero.

3. The heat dissipation method for a working machine according to claim 1, characterized in that: The step of determining the first expected rotational speed corresponding to each heat dissipation component to be cooled, the second expected rotational speed corresponding to the hydraulic oil, and the third expected rotational speed corresponding to the coolant according to the current temperature, the upper temperature threshold, the lower temperature threshold, the current oil temperature, the upper oil temperature threshold, the lower oil temperature threshold, and the current liquid temperature, the upper liquid temperature threshold, and the lower liquid temperature threshold corresponding to each heat dissipation component to be cooled further includes: When the current temperature of the heat dissipation element to be cooled is greater than or equal to the upper temperature threshold, determining the first expected rotational speed to be the rated rotational speed of the heat dissipation device corresponding to the heat dissipation element to be cooled; When the current oil temperature is greater than or equal to the upper oil temperature threshold, determining the second expected speed to be the rated speed of the heat sink corresponding to the hydraulic oil; When the current liquid temperature is greater than or equal to the upper liquid temperature threshold, the third expected rotational speed is determined to be a rated rotational speed of the heat dissipation device corresponding to the coolant.

4. The heat dissipation method for a working machine according to claim 1, characterized in that: The step of determining the first expected rotational speed corresponding to each heat dissipation component to be cooled, the second expected rotational speed corresponding to the hydraulic oil, and the third expected rotational speed corresponding to the coolant according to the current temperature, the upper temperature threshold, the lower temperature threshold, the current oil temperature, the upper oil temperature threshold, the lower oil temperature threshold, and the current liquid temperature, the upper liquid temperature threshold, and the lower liquid temperature threshold corresponding to each heat dissipation component to be cooled further includes: When the current temperature of the heat dissipation element is greater than or equal to the lower temperature threshold and less than the upper temperature threshold, the first expected rotation speed is determined according to the following formula (a): N1=A+(B-A)*(T a -T amin ) / (T amax -T amin ) (a); Wherein, N1 is the first desired speed, A is the minimum speed of the heat sink corresponding to the heat sink to be cooled, B is the rated speed of the heat sink corresponding to the heat sink to be cooled, T a is the current temperature of the heat sink to be cooled, T amax is the upper temperature threshold, T amin is the lower temperature threshold; When the current oil temperature is greater than or equal to the lower oil temperature threshold and less than the upper oil temperature threshold, the second expected speed is determined according to the following formula (b): N2=C+(D-C)*(T b -T bmin ) / (T bmax -T bmin ) (b); Wherein, N2 is the second desired speed, C is the minimum speed of the heat sink corresponding to the hydraulic oil, D is the rated speed of the heat sink corresponding to the hydraulic oil, T b is the current temperature of the hydraulic oil, T bmax is the upper limit oil temperature threshold, T bmin is the lower oil temperature threshold; When the current liquid temperature is greater than or equal to the lower liquid temperature threshold and less than the upper liquid temperature threshold, the third expected speed is determined according to the following formula (c): N3=C+(D-C)*(T c -T cmin ) / (T cmax -T cmin ) (c); Wherein, N3 is the third desired speed, E is the minimum speed of the heat sink corresponding to the coolant, F is the rated speed of the heat sink corresponding to the coolant, T c is the current temperature of the coolant, T cmax is the upper limit liquid temperature threshold, T cmin is the lower liquid temperature threshold.

5. The heat dissipation method for a working machine according to claim 1, characterized in that: The heat dissipation element to be cooled includes a plurality of motors and a plurality of motor controllers, the motors and the motor controllers dissipate heat through a water cooling fan and a liquid cooling system, the liquid cooling system includes a water pump, the hydraulic oil dissipates heat through an oil cooling fan, and the coolant dissipates heat through a water cooling fan, and the step of determining a target speed corresponding to each heat dissipation device according to each first expected speed, the second expected speed, and the third expected speed includes: determining a first maximum speed among the plurality of first desired speeds; determining the first maximum speed as a target speed of the water pump; Determining the second desired rotation speed as the target rotation speed of the oil cooling fan; determining a second maximum speed among the plurality of the first desired speeds and the third desired speeds; The second maximum speed is determined as the target speed of the water scattering fan.

6. The heat dissipation method for a working machine according to claim 1, characterized in that: The heat dissipation method further comprises the following steps: Receiving a first control instruction input from the outside; Determining a target heat dissipation device corresponding to the first control instruction; When the first control instruction is a high altitude mode instruction or a full speed instruction, the target heat dissipation device is controlled to perform a heat dissipation operation at a rated speed.

7. The heat dissipation method for a working machine according to claim 1, characterized in that: One or more of the plurality of heat dissipation devices is a heat dissipation fan, and the heat dissipation method further comprises the following steps: Receiving a second control instruction input from the outside; Determining a target cooling fan corresponding to the second control instruction; When the second control instruction is a reverse rotation instruction, the target cooling fan is controlled to rotate in the reverse direction at a rated speed for a preset time period.

8. A heat dissipation system for an operating machine, characterized in that: The heat dissipation system comprises: a memory configured to store instructions; and A plurality of temperature detection components, respectively used to detect the temperature of each heat dissipation component, hydraulic oil and coolant of the operating machine; A plurality of heat dissipation devices, each of which is used to dissipate heat from the heat dissipation component or the hydraulic oil or the coolant; The processor is configured to call the instructions from the memory and implement the heat dissipation method for a working machine according to any one of claims 1 to 7 when executing the instructions.

9. A working machine, characterized in that: The working machine comprises: Multiple heat dissipation components; A coolant storage member storing oil coolant; A hydraulic oil tank storing hydraulic oil; The heat dissipation system for a working machine as claimed in claim 8.

10. A machine-readable storage medium, characterized in that: The machine-readable storage medium stores instructions for causing the machine to execute the heat dissipation method for a working machine according to any one of claims 1 to 7.

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