Automatic control method and system for heat dissipation of inverter

By adopting water cooling technology and intelligent temperature regulation system in photovoltaic inverters, the heavy heating components in the inverter are dissipated separately, which solves the problem of traditional low heat dissipation efficiency, improves the safety and stability of the equipment, and reduces the safety and stability of the equipment. energy consumption.

CN119212298APending Publication Date: 2024-12-27HUANENG SHANXI COMPREHENSIVE ENERGY CO LTD SHANXI PROVINCE +8
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Patent Information

Application Number
CN202411159947.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-08-22
Publication Date
2024-12-27

AI Technical Summary

Technical Problem

The heat dissipation efficiency of traditional photovoltaic inverters is low, which can easily lead to overheating and damage to components. It is difficult for existing air-cooling technology to effectively reduce the internal temperature of the inverter.

Method used

Water cooling technology is used to dissipate heat separately for components that generate heavy heat in the inverter, and the cooling fan speed and cooling system power are adjusted through the detection module and the control module, and the temperature threshold is set to optimize the heat dissipation effect.

Benefits of technology

It improves the operating safety and overall stability of heavy components in the inverter, reduces the internal temperature of the inverter box, and reduces energy waste.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of inverter heat dissipation, in particular to an inverter heat dissipation automatic control method and system, and the method comprises the steps: 1, dividing components into heavy heat components and light heat components according to the heating conditions of the components in an inverter; 2, a cooling system is arranged on the reheating component for independent heat dissipation; a heat dissipation fan is arranged in the inverter for overall heat dissipation; 3, the temperature of a heat dissipation opening of the inverter and the temperature of all reheating components are detected; 4, a first temperature threshold value is set and used for adjusting the rotating speed of the cooling fan; setting a second temperature threshold value for adjusting the power of the cooling system; 5, the second temperature threshold value is adjusted according to the rotating speed of the cooling fan, and then the power of the cooling system is adjusted; according to the occurrence condition of the components in the inverter, the components which are heated severely are independently cooled, so that the operation safety of the components which are heated severely is improved, and meanwhile, the overall temperature in the inverter box body is effectively reduced.
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Description

Technical Field

[0001] The present invention relates to the technical field of inverter heat dissipation, and more particularly to an inverter heat dissipation automatic control method and system. Background Art

[0002] An inverter is a power regulation device composed of semiconductor devices, which is mainly used to convert DC power into AC power. It is generally composed of a boost circuit and an inverter bridge circuit. The boost circuit boosts the DC voltage of the solar cell to the DC voltage required for inverter output control; the inverter bridge circuit converts the boosted DC voltage into an AC voltage of a common frequency.

[0003] In photovoltaic power generation systems, the reliable operation of photovoltaic inverters plays an important role. However, the biggest problem with photovoltaic inverters at present is to ensure the heat dissipation of the box to avoid damage to the components inside the box. Traditional photovoltaic inverters use forced air cooling for heat dissipation. When the components are cooled by air, they are greatly affected by the temperature inside the inverter, and the cooling efficiency is low; it is easy to cause some components with severe heat generation to be damaged due to overheating.

[0004] Therefore, how to effectively dissipate the heat of components in the inverter that generate severe heat is an urgent problem that those skilled in the art need to solve. Summary of the invention

[0005] In view of this, the present invention provides an automatic control method and system for inverter heat dissipation, which uses water cooling to individually dissipate the heat of heavily heated components in the inverter, thereby improving the operating safety of heavily heated components, while effectively reducing the overall temperature inside the inverter box and improving the stability of the inverter operation.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] Preferably, the above inverter heat dissipation automatic control method includes:

[0008] Step 1: Classify the components into heavy heat components and light heat components according to the heat generation conditions of the components in the inverter;

[0009] Step 2, setting a cooling system for the heavy heat components to dissipate heat individually; setting a cooling fan in the inverter to dissipate heat as a whole;

[0010] Step 3, detecting the temperature of the heat dissipation port of the inverter and the temperature of all the heavy heat components;

[0011] Step 4, setting a first temperature threshold for adjusting the speed of the cooling fan; setting a second temperature threshold for adjusting the power of the cooling system;

[0012] Step 5: adjusting the second temperature threshold according to the rotation speed of the cooling fan, thereby adjusting the power of the cooling system.

[0013] Compared with the prior art, the above embodiment dissipates heat individually for components with severe heat generation according to the conditions of the components in the inverter, thereby improving the operating safety of the severe components, while effectively reducing the overall temperature inside the inverter box and improving the stability of the inverter operation.

[0014] Preferably, in the above inverter heat dissipation automatic control method, the setting of the first temperature threshold for adjusting the speed of the heat dissipation fan includes:

[0015] Step 410, obtaining the inverter heat dissipation port temperature as a first temperature value;

[0016] Step 411: if the first temperature value is greater than the first temperature threshold and the duration exceeds the first time threshold, control the PWM duty cycle of the cooling fan to increase by one step to increase the speed of the cooling fan;

[0017] Step 411: if the first temperature value is less than the first temperature threshold and the duration exceeds the first time threshold, control the PWM duty cycle of the cooling fan to decrease by one step, thereby reducing the rotation speed of the cooling fan.

[0018] Preferably, in the above inverter heat dissipation automatic control method, the setting of the second temperature threshold for adjusting the cooling system power includes:

[0019] Step 420, obtaining temperature information of all the reheat components and generating a temperature value set;

[0020] Step 421, obtaining the second temperature threshold of all the reheat components and generating a temperature threshold set;

[0021] Step 422, if one of the temperature values ​​in the temperature value set is greater than the corresponding second temperature threshold in the temperature threshold set, and the duration exceeds the second time threshold, the power of the cooling system is increased by a first preset value;

[0022] Step 423: If one of the temperature values ​​in the temperature value set is less than the corresponding second temperature threshold in the temperature threshold set and the duration exceeds the second time threshold, the power of the cooling system is reduced by the first preset value.

[0023] Preferably, in the above inverter heat dissipation automatic control method, the adjusting the second temperature threshold according to the rotation speed of the heat dissipation fan includes:

[0024] Step 50, obtaining the PWM duty cycle of the cooling fan;

[0025] Step 51, when the PWM duty cycle of the cooling fan increases by one step, all values ​​in the temperature threshold set increase by a second preset value;

[0026] Step 52: When the PWM duty cycle of the cooling fan is reduced by one step, all values ​​in the temperature threshold set are reduced by the second preset value.

[0027] Compared with the prior art, the above embodiment, on the basis of separately cooling the components in the inverter, also cools the heavy heat components while cooling the inside of the inverter box. Adjusting the temperature threshold can adjust the power of the cooling system and reduce energy waste.

[0028] Preferably, an automatic heat dissipation system using the above inverter heat dissipation automatic control method includes:

[0029] Air cooling module, a cooling fan is set inside the inverter housing, which can exchange the outside air with the internal air, so that an air duct is formed inside the inverter for heat dissipation;

[0030] A water cooling module is provided for each heavy heat component to dissipate cooling liquid, and can cool the heavy heat component individually;

[0031] A detection module detects the temperature of the air outlet side of the air cooling module and performs temperature detection on the device in the water cooling module;

[0032] The control module adjusts the cooling power of the air cooling module and the water cooling module according to the data information detected by the detection module.

[0033] Preferably, in the above inverter heat dissipation automatic control system, the air cooling module comprises:

[0034] Two groups of ventilation holes are respectively arranged on both sides of the inverter housing, and the first cooling fan is fixedly installed on the inner side of each group of ventilation holes; wherein, the two groups of ventilation holes located on the same side, one group is located at the upper end of the inverter housing, and the other group is located at the lower end of the inverter housing; correspondingly, the first cooling fan located at the lower end of the inverter housing is an inlet fan, and the first cooling fan located at the upper end of the inverter housing is an outlet fan.

[0035] Preferably, in the above inverter heat dissipation automatic control system, the water cooling module comprises:

[0036] A radiator is fixedly connected to the outside of the inverter housing, a second cooling fan is fixedly connected to one side of the radiator, and an air outlet direction of the second cooling fan corresponds to a heat sink of the radiator;

[0037] The reheating component is arranged inside the inverter housing, and the reheating component and the radiator are connected via a coolant pipe; wherein the coolant pipe is spirally arranged inside the reheating component and the radiator;

[0038] A circulation pump and a solenoid valve are arranged on the coolant pipe.

[0039] Preferably, in the above inverter heat dissipation automatic control system, the detection module includes:

[0040] A first temperature sensor is arranged at the upper end of the inverter housing and is capable of detecting the temperature of the air outlet side of the air cooling module;

[0041] A second temperature sensor is disposed on each of the reheat components and is capable of detecting the temperature of the reheat components;

[0042] The third temperature sensor is disposed on the radiator and can detect the temperature of the radiator.

[0043] Preferably, in the above inverter heat dissipation automatic control system, the control module includes:

[0044] a storage unit, receiving and storing the temperature data of the detection module, storing the first temperature threshold and the second temperature threshold;

[0045] The control unit controls the power of the first cooling fan, the second cooling fan and the circulation pump according to the temperature data in the storage unit.

[0046] It can be seen from the above technical solution that, compared with the prior art, the beneficial effects of the present invention are:

[0047] 1. According to the occurrence of components in the inverter, the components with severe heat generation are cooled separately, which improves the operating safety of heavy components. At the same time, it effectively reduces the overall temperature inside the inverter box and improves the stability of inverter operation.

[0048] 2. Adjust the power of the cooling system according to the cooling fan. When the heat is dissipated inside the inverter box, the heavy heat components will also be cooled. Adjusting the temperature threshold can adjust the power of the cooling system and reduce energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0050] Figure 1 The accompanying drawing is a schematic flow diagram of the method of the present invention.

[0051] Figure 2 The accompanying drawing is a schematic diagram of the structure of the water cooling module of the present invention.

[0052] Figure 3 The accompanying drawing is a schematic diagram of the structure of the air cooling module of the present invention.

[0053] Figure 4 The accompanying drawing is a schematic diagram of the connection structure between the heavy heat component and the water cooling module in the present invention.

[0054] In the figure, 1. inverter housing; 2. ventilation hole; 3. first cooling fan; 4. radiator; 5. second cooling fan; 6. heavy heat components; 7. coolant pipe; 8. circulation pump; 9. solenoid valve. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0056] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0058] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] Example 1

[0060] like Figure 1 As shown, an embodiment of the present invention discloses an inverter heat dissipation automatic control method, comprising:

[0061] Step 1: Classify the components into heavy heat components and light heat components according to the heat generation conditions of the components in the inverter;

[0062] Among them, the heavy heat components include components with serious heat generation in the inverter and components that are easily affected by temperature; among them, the components with serious heat generation can be judged based on the power consumption of the components themselves;

[0063] Step 2: Set up a cooling system for the heavy heat components to dissipate heat separately; set up a cooling fan in the inverter to dissipate heat as a whole;

[0064] The specific steps of individually cooling the heavy heat components are as follows: 1) dividing all heavy heat components into multiple groups according to their size and distribution; 2) setting a group for simultaneous cooling of the heavy heat components gathered in the same area, and avoiding too large differences in the heat generation capacity of each group when dividing;

[0065] Step 3, detecting the temperature of the inverter heat dissipation port and the temperature of all heavy heat components;

[0066] The heat dissipation outlet temperature is the temperature at the air outlet when heat is dissipated by air cooling;

[0067] Step 4, setting a first temperature threshold for adjusting the speed of the cooling fan; setting a second temperature threshold for adjusting the power of the cooling system;

[0068] Step 5: adjust the second temperature threshold according to the rotation speed of the cooling fan, thereby adjusting the power of the cooling system.

[0069] Wherein, the first temperature threshold and the second temperature threshold are both preset values.

[0070] The beneficial effects of the above embodiments are: the severely heated components are individually cooled according to the occurrence of components in the inverter, thereby improving the operating safety of the heavily heated components, while effectively reducing the overall temperature inside the inverter box and improving the stability of the inverter operation.

[0071] Example 2

[0072] In one embodiment, an inverter heat dissipation automatic control method is provided, wherein a first temperature threshold is set to adjust the speed of a heat dissipation fan, and includes:

[0073] Step 410, obtaining the inverter heat dissipation port temperature as a first temperature value;

[0074] Step 411, if the first temperature value is greater than the first temperature threshold and the duration exceeds the first time threshold, control the PWM duty cycle of the cooling fan to increase by one step to increase the speed of the cooling fan;

[0075] Step 411: if the first temperature value is less than the first temperature threshold and the duration exceeds the first time threshold, the PWM duty cycle of the cooling fan is controlled to decrease by one step, thereby reducing the rotation speed of the cooling fan.

[0076] It should be noted that when the temperature is detected inside the inverter, the temperature fluctuation of the gas is greatly affected by the external air temperature. Presetting the first time threshold can reduce the occurrence of temperature misjudgment.

[0077] Example 3

[0078] In one embodiment, a method for automatically controlling heat dissipation of an inverter is provided, wherein a second temperature threshold is set to adjust the power of a cooling system, and includes:

[0079] Step 420, obtaining temperature information of all reheat components and generating a temperature value set;

[0080] Step 421, obtaining the second temperature thresholds of all reheat components and generating a temperature threshold set;

[0081] Step 422, if one of the temperature values ​​in the temperature value set is greater than a corresponding second temperature threshold in the temperature threshold set, and the duration exceeds a second time threshold, the power of the cooling system is increased by a first preset value;

[0082] Step 423: If one of the temperature values ​​in the temperature value set is less than a corresponding second temperature threshold in the temperature threshold set and the duration exceeds a second time threshold, the power of the cooling system is reduced by a first preset value.

[0083] In the above embodiment, the second temperature threshold is set according to each reheat component; after the reheat components are grouped using the method of Example 1, if a group contains multiple components, the second temperature threshold with the smallest value is used as the second temperature threshold of the current group; the temperature information in the corresponding temperature value set is the overall temperature information of all components in the group, and the maximum temperature value of all components is used as the overall temperature value.

[0084] Example 4

[0085] In one embodiment, an inverter heat dissipation automatic control method is provided, wherein a second temperature threshold is adjusted according to a rotation speed of a heat dissipation fan, and includes:

[0086] Step 50, obtaining the PWM duty cycle of the cooling fan;

[0087] Step 51, when the PWM duty cycle of the cooling fan increases by one step, all values ​​in the temperature threshold set increase by a second preset value;

[0088] Step 52: When the PWM duty cycle of the cooling fan is reduced by one step, all values ​​in the temperature threshold set are reduced by a second preset value.

[0089] The beneficial effects of the above embodiment are: the power of the cooling system is adjusted according to the cooling fan. When the heat is dissipated inside the inverter box, the heavy heat components will also be cooled at the same time. Adjusting the temperature threshold can adjust the power of the cooling system, reduce energy waste, and avoid damage to components caused by untimely air cooling.

[0090] Example 5

[0091] An automatic heat dissipation system using the above inverter heat dissipation automatic control method comprises:

[0092] Air cooling module, a cooling fan is set inside the inverter housing, which can exchange the outside air with the internal air, so that an air duct is formed inside the inverter for heat dissipation;

[0093] The water cooling module sets cooling liquid for each heavy heat component, and can cool the heavy heat component separately;

[0094] A detection module detects the temperature of the air outlet side of the air cooling module and performs temperature detection on the device in the water cooling module;

[0095] The control module adjusts the cooling power of the air cooling module and the water cooling module according to the data information detected by the detection module.

[0096] Among them, the control module is a processor unit arranged in the inverter, which is a prior art; it is connected with the equipment in the air cooling module, the water cooling module and the detection module to obtain data and perform control.

[0097] Example 6

[0098] like Figure 3 As shown, an inverter heat dissipation automatic control system is characterized in that the air cooling module includes:

[0099] Two groups of ventilation holes 2 are respectively arranged on both sides of the inverter housing 1, and a first cooling fan 3 is fixedly installed on the inner side of each group of ventilation holes 2; among them, the two groups of ventilation holes 2 located on the same side, one group is located at the upper end of the inverter housing 1, and the other group is located at the lower end of the inverter housing 1; correspondingly, the first cooling fan 3 located at the lower end of the inverter housing 1 is an inlet fan, and the first cooling fan 3 located at the upper end of the inverter housing 1 is an outlet fan.

[0100] In the above embodiment, the first cooling fan 3 is set in forward and reverse directions, and can be divided into an inlet fan and an outlet fan; the cooling air enters from the lower end of the inverter and is blown out from the upper end of the inverter, forming an air duct inside the inverter. By adjusting the rotation speed of the first cooling fan 3, the wind speed can be adjusted to improve the heat dissipation efficiency.

[0101] Example 7

[0102] like Figure 2 and Figure 4 As shown, in one embodiment, an inverter heat dissipation automatic control system, a water cooling module, includes:

[0103] A radiator 4 is fixedly connected to the outside of the inverter housing 1, a second cooling fan 5 is fixedly connected to one side of the radiator 4, and the air outlet direction of the second cooling fan 5 corresponds to the cooling fins of the radiator 4;

[0104] The reheating component 6 is arranged inside the inverter housing 1, and the reheating component 6 and the radiator 4 are connected through a coolant pipe 7; wherein the coolant pipe 7 is spirally arranged inside the reheating component 6 and the radiator 4;

[0105] Among them, Figure 4 As shown, the reheating element 6 in this embodiment is represented by the reheating element group described in Example 1; that is, the spiral area of ​​the coolant pipe 7 includes all the components of the reheating element group;

[0106] A circulation pump 8 and a solenoid valve 9 are provided on the coolant pipe 7 .

[0107] Among them, the circulation pump 8 and the solenoid valve 9 are both prior arts commonly known to those skilled in the art.

[0108] In the above embodiment, the second cooling fan 5 and the circulation pump 8 are controlled by the processor, so that the purpose of improving the cooling efficiency can be achieved.

[0109] Example 8

[0110] In one embodiment, an inverter heat dissipation automatic control system, a detection module, includes:

[0111] A first temperature sensor is arranged at the upper end of the inverter housing 1 and is capable of detecting the temperature of the air outlet side of the air cooling module;

[0112] A second temperature sensor is provided on each reheating component 6 and is capable of detecting the temperature of the reheating component;

[0113] The third temperature sensor is disposed on the radiator 4 and can detect the temperature of the radiator 4 .

[0114] Control module, including:

[0115] A storage unit, receiving and storing temperature data of the detection module, storing a first temperature threshold and a second temperature threshold;

[0116] The control unit controls the power of the first cooling fan 3, the second cooling fan 5 and the circulation pump 8 according to the temperature data in the storage unit.

[0117] In the above embodiments, the first temperature sensor, the second temperature sensor and the third temperature sensor are all prior arts commonly known to those skilled in the art;

[0118] The control module obtains the temperature information of the detection module, and controls the efficiency of air cooling and water cooling by using the methods of the above embodiments 1-4, thereby realizing automatic control of the heat dissipation of the inverter.

[0119] It should be noted that the above embodiments are only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be decomposed or combined. For example, the modules in the above embodiments can be combined into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the modules or steps, and are not regarded as improper limitations of the present invention.

[0120] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus / device.

[0121] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0122] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations in the above description of the disclosed embodiments, so that professionals and technicians in the field can implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. An automatic control method for heat dissipation of an inverter, characterized in that: include: Step 1: Classify the components into heavy heat components and light heat components according to the heat generation conditions of the components in the inverter; Step 2, setting a cooling system for the heavy heat components to dissipate heat individually; setting a cooling fan in the inverter to dissipate heat as a whole; Step 3, detecting the temperature of the heat dissipation port of the inverter and the temperature of all the heavy heat components; Step 4, setting a first temperature threshold for adjusting the speed of the cooling fan; Setting a second temperature threshold for adjusting the cooling system power; Step 5: adjusting the second temperature threshold according to the rotation speed of the cooling fan, thereby adjusting the power of the cooling system.

2. The inverter heat dissipation automatic control method according to claim 1, characterized in that: The step of setting the first temperature threshold for adjusting the rotation speed of the cooling fan includes: Step 410, obtaining the inverter heat dissipation port temperature as a first temperature value; Step 411: if the first temperature value is greater than the first temperature threshold and the duration exceeds the first time threshold, control the PWM duty cycle of the cooling fan to increase by one step to increase the speed of the cooling fan; Step 411: if the first temperature value is less than the first temperature threshold and the duration exceeds the first time threshold, control the PWM duty cycle of the cooling fan to decrease by one step, thereby reducing the rotation speed of the cooling fan.

3. The inverter heat dissipation automatic control method according to claim 2, characterized in that: The setting of the second temperature threshold, for adjusting the power of the cooling system, comprises: Step 420, obtaining temperature information of all the reheat components and generating a temperature value set; Step 421, obtaining the second temperature threshold of all the reheat components and generating a temperature threshold set; Step 422, if one of the temperature values ​​in the temperature value set is greater than the corresponding second temperature threshold in the temperature threshold set, and the duration exceeds the second time threshold, the power of the cooling system is increased by a first preset value; Step 423: If one of the temperature values ​​in the temperature value set is less than the corresponding second temperature threshold in the temperature threshold set and the duration exceeds the second time threshold, the power of the cooling system is reduced by the first preset value.

4. The inverter heat dissipation automatic control method according to claim 3, characterized in that: The adjusting the second temperature threshold according to the rotation speed of the cooling fan includes: Step 50, obtaining the PWM duty cycle of the cooling fan; Step 51, when the PWM duty cycle of the cooling fan increases by one step, all values ​​in the temperature threshold set increase by a second preset value; Step 52: When the PWM duty cycle of the cooling fan is reduced by one step, all values ​​in the temperature threshold set are reduced by the second preset value.

5. An automatic heat dissipation system using the inverter heat dissipation automatic control method according to any one of claims 1 to 4, characterized in that: include: Air cooling module, a cooling fan is set inside the inverter housing, which can exchange the outside air with the internal air, so that an air duct is formed inside the inverter for heat dissipation; A water cooling module is provided for each heavy heat component to dissipate cooling liquid, and can cool the heavy heat component individually; A detection module detects the temperature of the air outlet side of the air cooling module and performs temperature detection on the device in the water cooling module; The control module adjusts the cooling power of the air cooling module and the water cooling module according to the data information detected by the detection module.

6. The inverter heat dissipation automatic control system according to claim 5, characterized in that: The air cooling module comprises: Two groups of ventilation holes (2) are respectively arranged on both sides of the inverter housing (1), and the first cooling fan (3) is fixedly installed on the inner side of each group of ventilation holes (2); wherein, of the two groups of ventilation holes (2) located on the same side, one group is located at the upper end of the inverter housing (1), and the other group is located at the lower end of the inverter housing (1); correspondingly, the first cooling fan (3) located at the lower end of the inverter housing (1) is an inlet fan, and the first cooling fan (3) located at the upper end of the inverter housing (1) is an outlet fan.

7. The inverter heat dissipation automatic control system according to claim 6, characterized in that: The water cooling module comprises: A radiator (4) is fixedly connected to the outside of the inverter housing (1); a second cooling fan (5) is fixedly connected to one side of the radiator (4); and an air outlet direction of the second cooling fan (5) corresponds to a cooling fin of the radiator (4); The reheating component (6) is arranged inside the inverter housing (1), and the reheating component (6) and the radiator (4) are connected via a coolant pipe (7); wherein the coolant pipe (7) is arranged in a spiral manner inside the reheating component (6) and the radiator (4); A circulation pump (8) and a solenoid valve (9) are arranged on the coolant pipe (7).

8. The inverter heat dissipation automatic control system according to claim 7, characterized in that: The detection module comprises: A first temperature sensor, arranged at the upper end of the inverter housing (1), capable of detecting the temperature of the air outlet side of the air cooling module; A second temperature sensor, arranged on each of the reheating components (6), capable of detecting the temperature of the reheating components; The third temperature sensor is arranged on the radiator (4) and is capable of detecting the temperature of the radiator (4).

9. The inverter heat dissipation automatic control system according to claim 8, characterized in that: The control module comprises: a storage unit, receiving and storing the temperature data of the detection module, storing the first temperature threshold and the second temperature threshold; The control unit controls the power of the first cooling fan (3), the second cooling fan (5) and the circulation pump (8) according to the temperature data in the storage unit.

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