Heat dissipation electrical cabinet, control method of heat dissipation electrical cabinet and energy storage converter

Abstract

The invention provides a heat dissipation electrical cabinet, a control method of the heat dissipation electrical cabinet and an energy storage converter, and relates to the technical field of power electronics. A heat dissipation electrical cabinet comprises an electrical cabinet body; the first heat dissipation subsystem comprises an out-cabinet air duct baffle plate, and the out-cabinet air duct baffle plate is located outside the electrical cabinet body and is used for forming an out-cabinet closed coherent air duct together with the outer wall of the electrical cabinet body; and the second heat dissipation subsystem comprises an in-cabinet air duct baffle plate, and the in-cabinet air duct baffle plate is located in the electrical cabinet body and is used for dividing the space in the electrical cabinet body into an in-cabinet open air duct and an in-cabinet closed air duct. According to the technical scheme, the first heat dissipation subsystem and the second heat dissipation subsystem are arranged, heat dissipation airflow of the two heat dissipation subsystems is completely isolated, dirt, rain and snow are prevented from entering the cabinet body, the high protection performance of the cabinet body is achieved, meanwhile, the two heat dissipation subsystems dissipate heat separately for different components, and the heat dissipation efficiency is high.

Description

Technical Field

[0001] The present application relates to the field of power electronics technology, and particularly relates to a heat dissipation electrical cabinet, a control method of the heat dissipation electrical cabinet, and an energy storage converter. Background Art

[0002] At present, the installed capacity of wind power and photovoltaic power generation has increased rapidly, but there are some challenges in popularization and application, especially the time difference contradiction between power generation and power consumption, and the impact of direct grid connection of intermittent renewable energy power generation on the power grid. The energy storage system is a key link for the popularization and application of renewable energy such as solar energy and wind energy, and is an important means to improve the safety, stability, reliability and power quality of the power system, thus attracting wide attention.

[0003] The energy storage converter is the core of the energy storage system. The energy storage outdoor cabinet is the main form of the current application of the energy storage converter. The cabinet includes low-protection devices such as IGBT power module units, capacitor banks, control devices, DC disconnectors, AC circuit breakers and fuses. During operation, a large amount of heat is generated by the internal power electronic devices during high-power conversion, and reliable heat dissipation equipment needs to be installed. On this basis, the energy storage outdoor cabinet operates in complex and diverse external environments such as rain, sand, salt mist, and condensation, and has high requirements for the protection of the heat dissipation equipment.

[0004] At present, the heat dissipation of outdoor energy storage converters is mainly based on air-cooled heat dissipation. However, the air-cooled heat dissipation commonly used for large-power electrical equipment at present is generally in a form where internal and external heat dissipation is not separated, and this heat dissipation method cannot meet the application requirements of high protection. In addition, the air-cooled heat dissipation efficiency is low. As the capacity of the energy storage converter continues to increase, its heat dissipation capacity can no longer meet the requirements of high-power heat dissipation.

[0005] In summary, the prior art has problems of low protection and low efficiency of the air-cooled heat dissipation system. Summary of the Invention

[0006] Based on this, the present application provides a heat dissipation electrical cabinet, a control method of the heat dissipation electrical cabinet, and an energy storage converter, realizing heat dissipation of an electrical cabinet with high protection and high efficiency.

[0007] According to one aspect of the present application, a heat dissipation electrical cabinet is proposed, including: an electrical cabinet body; a first heat dissipation subsystem, including an outer cabinet air duct baffle, the outer cabinet air duct baffle is located outside the electrical cabinet body and is used to jointly form an outer cabinet airtight and continuous air duct with the outer wall of the electrical cabinet body; a second heat dissipation subsystem, including an inner cabinet air duct baffle, the inner cabinet air duct baffle is located inside the electrical cabinet body and is used to divide the space inside the electrical cabinet body into an inner cabinet open air duct and an inner cabinet airtight air duct.

[0008] According to some embodiments, the first heat dissipation subsystem further includes a first group of fans, and the first group of fans is arranged in the outer cabinet airtight and continuous air duct.

[0009] According to some embodiments, the first heat dissipation subsystem further includes: a power module liquefier disposed in the closed and continuous air duct outside the cabinet; and a power module vaporizer disposed in the open air duct inside the cabinet; wherein, the heat dissipation electrical cabinet further includes: a first vaporization pipe and a first liquid return pipe, both connected between the power module vaporizer and the power module liquefier, and a preset organic working fluid is filled inside both the first vaporization pipe and the first liquid return pipe.

[0010] According to some embodiments, the first heat dissipation subsystem further includes a reactor chamber disposed at one end of the closed and continuous air duct outside the cabinet and completely isolated from the inside of the electrical cabinet body.

[0011] According to some embodiments, the first heat dissipation subsystem further includes an air outlet disposed on the side wall and / or bottom of the reactor chamber.

[0012] According to some embodiments, the first heat dissipation subsystem further includes a third group of fans disposed inside the reactor chamber, and a reactor is also disposed inside the reactor chamber.

[0013] According to some embodiments, the first heat dissipation subsystem further includes an air inlet, and an elbow air hood, a filtering device and / or a noise reduction device are disposed at the air inlet.

[0014] According to some embodiments, the second heat dissipation subsystem further includes a second group of fans disposed at the junction of the open air duct inside the cabinet and the closed air duct inside the cabinet.

[0015] According to some embodiments, the second heat dissipation subsystem further includes: a capacitor bank liquefier disposed in the closed and continuous air duct outside the cabinet; and a capacitor bank vaporizer disposed in the closed air duct inside the cabinet; wherein, the heat dissipation electrical cabinet further includes: a second vaporization pipe and a second liquid return pipe, both connected between the capacitor bank vaporizer and the capacitor bank liquefier, and a preset organic working fluid is filled inside both the second vaporization pipe and the second liquid return pipe.

[0016] According to some embodiments, the electrical cabinet body includes: a capacitor bank disposed in the closed air duct inside the cabinet; and a control device and components inside the cabinet disposed in the open air duct inside the cabinet.

[0017] According to one aspect of the present application, a control method for a heat-dissipating electrical cabinet includes: in response to an electrical cabinet startup command, starting a power module vaporizer and a power module liquefier, and starting a first group of fans and a second group of fans at an initial speed; obtaining a first temperature of the power module vaporizer, and according to the first temperature, adjusting the first speed of the first group of fans according to a first mapping relationship, where the first mapping relationship is the relationship between the first temperature and the first speed of the first group of fans; obtaining a second temperature inside the electrical cabinet body, and according to the second temperature, adjusting the second speed of the second group of fans according to a second mapping relationship, where the second mapping relationship is the relationship between the second temperature and the second speed of the second group of fans; when the second speed reaches a preset second upper limit, increasing the first speed of the first group of fans by a preset amplitude; when the first speed reaches a preset first upper limit, if the first temperature is greater than a preset first temperature threshold, controlling the heat-dissipating electrical cabinet to operate according to a preset power-temperature derating curve; in the case where the first group of fans and / or the second group of fans fail, if the first temperature is greater than a preset second temperature threshold or the second temperature is greater than a preset third temperature threshold, controlling the heat-dissipating electrical cabinet to shut down.

[0018] According to some embodiments, after starting the power module vaporizer and the power module liquefier in response to the electrical cabinet startup command, and starting the first group of fans and the second group of fans at an initial speed, it further includes: starting a capacitor bank vaporizer and a capacitor bank liquefier.

[0019] According to one aspect of the present application, an electronic device is provided, which includes: one or more processors; a storage device for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors implement the method as described above.

[0020] According to one aspect of the present application, a computer-readable medium is provided, on which a computer program is stored, and when the program is executed by a processor, it implements the method as described above.

[0021] According to one aspect of the present application, a power storage converter is provided, which includes the heat-dissipating electrical cabinet as described above.

[0022] Through the above-mentioned embodiments provided by the present application, two sets of heat-dissipating subsystems, namely the first and the second, are set up. The outside-air duct baffle and the electrical cabinet body form an airtight and continuous outside-air duct for accommodating the heat-dissipating air flow of the first heat-dissipating subsystem. The inside-air duct baffle divides the space inside the electrical cabinet body into an open inside-air duct and a sealed inside-air duct for accommodating the heat-dissipating air flow of the second heat-dissipating subsystem. The heat-dissipating air flows of the two sets of heat-dissipating subsystems are completely isolated, preventing dirt, rain and snow from entering the inside of the cabinet body, achieving high protection performance of the cabinet body. At the same time, the two sets of heat-dissipating subsystems dissipate heat separately for different components, with high heat-dissipating efficiency. Description of the Drawings

[0023] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present application.

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exceeding the scope protected by the present application.

[0025] Figure 1 One of the block diagrams of the heat dissipation electrical cabinet provided by the embodiment of the present application;

[0026] Figure 2 Another block diagram of the heat dissipation electrical cabinet provided by the embodiment of the present application;

[0027] Figure 3 The flowchart of the control method of the heat dissipation electrical cabinet provided by the embodiment of the present application;

[0028] Figure 4 The structural schematic diagram of the electronic device provided by the embodiment of the present application;

[0029] Figure 5 The block diagram of the energy storage converter provided by the embodiment of the present application.

[0030] Reference numerals:

[0031] 100: Heat dissipation electrical cabinet; 110: Electrical cabinet body; 111: Capacitor bank; 112: Control device; 113: Components inside the cabinet; 120: First heat dissipation subsystem; 121: Cabinet external air duct baffle; 122: Cabinet external airtight and continuous air duct; 123: First group of fans; 124: Power module liquefier; 125: Power module vaporizer; 126: Reactor chamber; 127: Air outlet; 128: Third group of fans; 129: Air inlet; 130: Second heat dissipation subsystem; 131: Cabinet internal air duct baffle; 132: Cabinet internal open air duct; 133: Cabinet internal airtight air duct; 134: Second group of fans; 135: Capacitor bank liquefier; 136: Capacitor bank vaporizer; 140: First vaporization tube; 150: First liquid return tube; 160: Second vaporization tube; 170: Second liquid return tube. Detailed implementation manners

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0033] In addition, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present application.

[0034] The block diagrams shown in the drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0035] The flowcharts shown in the drawings are only illustrative and do not necessarily include all the content and operations / steps, nor are they necessarily executed in the order described. For example, some operations / steps can be decomposed, while some operations / steps can be combined or partially combined, so the actual execution order may change according to the actual situation.

[0036] It should be understood that although terms such as first, second, and third may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Thus, the first component discussed below can be referred to as the second component without departing from the teachings of the concept of the present application. As used herein, the term "and / or" includes any one of the associated listed items and all combinations of one or more of them.

[0037] Specific implementation manners can refer to the following embodiments.

[0038] Figure 1 It is a block diagram of the heat dissipation electrical cabinet 100 provided for the embodiments of the present application. As Figure 1 shown, the heat dissipation electrical cabinet 100 includes: an electrical cabinet body 110; a first heat dissipation subsystem 120 and a second heat dissipation subsystem 130.

[0039] Among them, the first heat dissipation subsystem 120 includes an external air duct baffle 121. The external air duct baffle 121 is located outside the electrical cabinet body 110 and is used to jointly form an external airtight and continuous air duct 122 with the outer wall of the electrical cabinet body 110.

[0040] The second heat dissipation subsystem 130 includes an in-cabinet air duct baffle 131 , which is located inside the electrical cabinet body 110 and is used to separate the space inside the electrical cabinet body 110 into an in-cabinet open air duct 132 and an in-cabinet closed air duct 133 .

[0041] The present application takes into account the differences in heat generation and protection levels of different components such as power modules, capacitor groups 111, and reactors in the heat dissipation electrical cabinet 100, and the different requirements of various components for heat dissipation capacity and heat dissipation protection. A first and a second heat dissipation subsystem are provided, and the external duct baffle 121 and the electrical cabinet body 110 form an external closed and continuous duct 122 for accommodating the heat dissipation airflow of the first heat dissipation subsystem 120. The internal duct baffle 131 divides the space inside the electrical cabinet body 110 into an open duct 132 inside the cabinet and a closed duct 133 inside the cabinet, which are jointly used to accommodate the heat dissipation airflow of the second heat dissipation subsystem 130. The heat dissipation airflows of the two heat dissipation subsystems are completely isolated to prevent dirt and rain and snow from entering the cabinet, thereby achieving high protection performance of the cabinet. At the same time, the two heat dissipation subsystems dissipate heat separately for different components, and have high heat dissipation efficiency.

[0042] According to some embodiments, the first heat dissipation subsystem 120 further includes a first group of fans 123 , and the first group of fans 123 is disposed in a closed and connected air duct 122 outside the cabinet.

[0043] According to an exemplary embodiment, the first group of fans 123 is a centrifugal fan or an axial flow fan, and is at least one or at least one group of fans.

[0044] A first group of fans 123 is arranged in the closed and connected air duct 122 outside the cabinet to accelerate the flow of the heat dissipation airflow of the first heat dissipation subsystem 120 and improve the heat dissipation efficiency based on the air cooling technology.

[0045] According to some embodiments, the first heat dissipation subsystem 120 also includes: a power module liquefier 124, which is arranged in a closed and continuous air duct 122 outside the cabinet; and a power module vaporizer 125, which is arranged in an open air duct 132 inside the cabinet; wherein the heat dissipation electrical cabinet 100 also includes: a first vaporization pipe 140 and a first liquid return pipe 150, both of which are connected between the power module vaporizer 125 and the power module liquefier 124, and the first vaporization pipe 140 and the first liquid return pipe 150 are both filled with a preset organic working fluid.

[0046] First of all, it needs to be explained that phase change cooling is a relatively comprehensive and balanced heat dissipation method between air cooling and liquid cooling. It takes into account both heat dissipation efficiency and heat dissipation cost. Its working method is to heat the low-boiling point organic working fluid in the vaporizer with heat. After the working fluid phase changes and vaporizes, it enters the liquefier through the vaporization tube. The heat dissipation cold air blows through the liquefier to take away the heat of the working fluid through heat exchange. After the working fluid is cooled and liquefied, it flows back to the vaporizer through the return liquid pipe. The above-mentioned gasification and liquefaction phase change process is repeated to achieve heat dissipation.

[0047] In this embodiment, a phase change cooling technology is added on the basis of the first heat dissipation subsystem 120. The power module vaporizer 125 and the power module liquefier 124 cooperate with each other. They are connected by the first vaporization pipe 140 and the first liquid return pipe 150, and are filled with a highly insulating and low-boiling organic working fluid inside. The cooling of the power semiconductor device installed on the power module vaporizer 125 is achieved through the cyclic phase change heat transfer method.

[0048] Based on the above embodiment, the first heat dissipation subsystem 120 uses a composite cooling technology of air cooling and phase change cooling, taking into account both the heat dissipation efficiency and the heat dissipation cost.

[0049] According to some embodiments, the first heat dissipation subsystem 120 further includes a reactor chamber 126. The reactor chamber 126 is arranged at one end of the closed and continuous air duct 122 outside the cabinet and is completely isolated from the inside of the electrical cabinet body 110.

[0050] In this embodiment, a reactor chamber 126 is arranged in the first heat dissipation subsystem 120. The reactor chamber 126 is an independent closed cabin type and is completely isolated from the inner cabin of the electrical cabinet body 110, reducing the influence of the high-heat-generating reactor components on the thermal radiation temperature rise of the components in the inner cabin of the electrical cabinet body 110. The heat dissipation air flow of the closed and continuous air duct 122 outside the cabinet provides heat dissipation for the reactor chamber 126.

[0051] The reactor chamber 126 can not only ensure the equipment life through environmental control and safety isolation, but also optimize the stability, efficiency and safety of the power system through function integration.

[0052] According to some embodiments, the first heat dissipation subsystem 120 further includes an air outlet 127. The air outlet 127 is arranged on the side wall and / or the bottom of the reactor chamber 126.

[0053] The air outlet 127 is actually the outlet of the hot air of the closed and continuous air duct 122 outside the cabinet. The air outlet 127 is arranged on the side wall and / or the bottom of the reactor chamber 126, which can make the hot air concentrate and discharge sideways or downward, avoiding the influence of the vertically rising hot air on the adjacent cabinets.

[0054] According to some embodiments, the first heat dissipation subsystem 120 further includes a third group of fans 128. The third group of fans 128 is arranged inside the reactor chamber 126, and a reactor is also arranged inside the reactor chamber.

[0055] The reactor chamber 126 is the physical carrier for the operation of the reactor, and a reactor is arranged inside. A fan is separately configured for the reactor chamber 126, denoted as the third group of fans 128, to improve the heat dissipation efficiency and ensure the safe operation of the reactor.

[0056] The model selection of the third group of fans 128 is similar to that of the first group of fans 123, and this application will not elaborate here.

[0057] According to some embodiments, the first heat dissipation subsystem 120 further includes an air inlet 129, and the air inlet 129 is provided with an elbow air hood, a filtering device, and / or a noise reduction device.

[0058] The air inlet 129 is actually the inlet of the cold air of the closed continuous air duct 122 outside the cabinet.

[0059] Furthermore, in order to optimize the air flow direction and reduce the cold and heat interference, the air inlet 129 is arranged at the front of the cabinet body 110 of the electrical cabinet, and the air outlet 127 is arranged at the rear of the cabinet body 110 of the electrical cabinet.

[0060] Add at least one of an elbow air hood, a filtering device, and a noise reduction device at the air inlet 129.

[0061] The elbow air hood can prevent rain, snow, and dust from entering, keep the air duct clean and protected, and at the same time, achieve air flow control and noise suppression through diversion and structural optimization.

[0062] The filtering device can purify the air flow entering the closed continuous air duct 122 outside the cabinet, filter dust and particulate matter, prevent pollutants from entering the interior of the air duct and affecting the performance, and improve the protection level of the cabinet; at the same time, it can also block erosive substances from entering the closed continuous air duct 122 outside the cabinet, reducing the risk of insulation aging and short circuit.

[0063] The noise reduction device can reduce noise pollution through its own materials and / or structures, increasing the applicability of the scenario.

[0064] Furthermore, the noise reduction device can be arranged on the inner wall of the elbow air hood.

[0065] According to some embodiments, the second heat dissipation subsystem 130 further includes a second group of fans 134, and the second group of fans 134 is arranged at the junction of the open air duct 132 inside the cabinet and the closed air duct 133 inside the cabinet.

[0066] The model selection of the second group of fans 134 is similar to that of the first group of fans 123, and this application will not elaborate here.

[0067] Arrange the second group of fans 134 at the junction of the open air duct 132 inside the cabinet and the closed air duct 133 inside the cabinet to accelerate the flow of the heat dissipation air flow of the second heat dissipation subsystem 130 and improve the heat dissipation efficiency based on the air-cooling technology.

[0068] According to the exemplary embodiments, the air outlet of the second group of fans 134 is aligned with the closed air duct 133 inside the cabinet to provide directional heat dissipation diversion for the closed air duct 133 inside the cabinet.

[0069] According to some embodiments, the second heat dissipation subsystem 130 further includes a capacitor bank liquefier 135 and a capacitor bank vaporizer 136.

[0070] The capacitor bank liquefier 135 is disposed in the closed and continuous air duct 122 outside the cabinet, and the capacitor bank vaporizer 136 is disposed in the closed air duct 133 inside the cabinet.

[0071] The heat dissipation electrical cabinet 100 further includes: a second vaporization pipe 160 and a second liquid return pipe 170, both connected between the capacitor bank vaporizer 136 and the capacitor bank liquefier 135, and the second vaporization pipe 160 and the second liquid return pipe 170 are both filled with a preset organic working fluid.

[0072] In this embodiment, a phase change cooling technology is added on the basis of the second heat dissipation subsystem 130. The capacitor bank liquefier 135 and the capacitor bank vaporizer 136 cooperate to work, and are connected by the second vaporization pipe 160 and the second liquid return pipe 170. The interior is filled with an organic working fluid with high insulation and low boiling point, and the heat generated by the components in the inner compartment of the electrical cabinet body 110 during operation is cooled by the cyclic phase change heat transfer method.

[0073] According to some embodiments, the electrical cabinet body 110 includes: a capacitor bank 111, disposed in the closed air duct 133 inside the cabinet; and a control device 112 and components 113 inside the cabinet, disposed in the open air duct 132 inside the cabinet.

[0074] That is to say, the open air duct 132 inside the cabinet and the closed air duct 133 inside the cabinet jointly constitute the heat dissipation air flow duct of the second heat dissipation subsystem 130. The closed air duct 133 inside the cabinet provides directional heat dissipation diversion for the capacitor bank 111, and the open air duct 132 inside the cabinet provides heat dissipation air flow for the control device 112 and the components 113 inside the cabinet.

[0075] According to the exemplary embodiment, the control device 112 has the functions of starting and stopping control and speed regulation control for the first group of fans 123, the second group of fans 134, and the third group of fans 128.

[0076] According to the exemplary embodiment, the components 113 inside the cabinet include, but are not limited to, fuses, AC / DC switches, charge and discharge resistors, charge and discharge contactors, auxiliary power transformers, AC filter capacitor banks, sampling elements, fan contactors, and connecting copper bars that make up the energy storage converter.

[0077] Based on the above embodiments, in a specific embodiment, such as Figure 2As shown in the figure, the first cooling system 120 includes a first group of fans 123, an external cabinet air duct baffle 121, a power module liquefier 124, a power module vaporizer 125, a reactor chamber 126, an air outlet 127, and an air inlet 129. The external cabinet air duct baffle 121 and the outer wall of the electrical cabinet body 110 together form an external cabinet airtight and continuous air duct 122. The first cooling air flow passes through the internal part of the external cabinet airtight and continuous air duct 122. The air inlet 129 for cold air and the air outlet 127 for hot air are connected to the external environment of the cabinet. The first cooling air flow is driven by the first group of fans 123 and passes through the capacitor bank liquefier 135, the power module liquefier 124, and the reactor chamber 126. The first cooling air flow is isolated by the outer wall of the electrical cabinet body 110 and thus will not enter the interior of the cabinet body.

[0078] The second cooling system 130 includes a second group of fans 134, an internal cabinet air duct baffle 131, a capacitor bank liquefier 135, and a capacitor bank vaporizer 136. The internal cabinet air duct baffle 131 is located inside the electrical cabinet body 110 and divides the space inside the electrical cabinet body 110 into an internal cabinet open air duct 132 and an internal cabinet airtight air duct 133. The second cooling air flow passes through the internal parts of the internal cabinet open air duct 132 and the internal cabinet airtight air duct 133. The second cooling air flow is driven by the second group of fans 134 and passes through the capacitor bank vaporizer 136, the capacitor bank 111, the power module vaporizer 125, the control device 112, and the internal cabinet components 113. The second cooling air flow flows inside the cabinet body and is isolated by the outer wall of the cabinet and is not connected to the external environment of the cabinet.

[0079] In this embodiment, an air-cooling and phase-change cooling composite cooling technology is used. The external cabinet airtight and continuous air duct 122 adopts an integrated through air duct. For different heat generation amounts and protection levels of components, the first cooling air flow not only provides a cooling air flow for the capacitor bank liquefier 135 and the power module liquefier 124, but also takes into account the air-cooling of the reactor chamber 126, saves the usage of fans, and reduces the cost and energy consumption of the cooling system. In addition, the reactor chamber 126 is an independent airtight cabin type and is completely isolated from the internal circulation chamber of the electrical cabinet body 110, reducing the influence of the high heat generation reactor components on the thermal radiation temperature rise of the components in the internal chamber of the electrical cabinet body 110.

[0080] The internal cabinet airtight air duct 133 forces the air flow to be directionally diverted through the second group of fans 134 to ensure that the cold air concentrates on flowing through the high-temperature areas (such as the capacitor core or the electrode connection) of the capacitor bank 111, improving the cooling efficiency. The internal cabinet open air duct 132 covers the dispersed heat sources (i.e., the control device 112 and the internal cabinet components 113) through natural convection or low-speed air flow, meeting the cooling requirements of low to medium power equipment, and taking into account the cooling efficiency while saving the usage of fans.

[0081] The cooling airflows of the two sets of cooling subsystems are completely isolated to prevent dirt, rain, and snow from entering the interior of the cabinet, achieving high protection performance for the cabinet and giving full play to the comprehensive advantages of high cooling efficiency of phase change cooling and low cost of air cooling for reactors.

[0082] The method embodiments of the present application are described below, which can be used to control the device embodiments of the present application. For details not disclosed in the device embodiments of the present application, reference can be made to the device embodiments of the present application.

[0083] Figure 3 It is a flowchart of the control method for the cooling electrical cabinet provided by the embodiments of the present application. As Figure 3 shown, the method includes step S310 - step S350.

[0084] In step S310, in response to the electrical cabinet startup command, the power module vaporizer and the power module liquefier are started, and the first group of fans and the second group of fans are started at the initial speed.

[0085] The electrical cabinet startup command is issued by the user or automatically issued according to preset conditions.

[0086] After receiving the electrical cabinet startup command, unlock the power module and start the first group of fans and the second group of fans, and operate at the initial minimum speed

[0087] In step S320, obtain the first temperature of the power module vaporizer, and according to the first temperature, adjust the first speed of the first group of fans according to the first mapping relationship, where the first mapping relationship is the relationship between the first temperature and the first speed of the first group of fans.

[0088] Real-time detect the temperature of the power module vaporizer, denoted as the first temperature.

[0089] According to the temperature of the power module vaporizer, dynamically adjust the speed of the first group of fans (i.e., the first speed), and the rule followed for adjusting the first speed is denoted as the first mapping relationship. Among them, the higher the temperature of the power module vaporizer, the greater the first speed.

[0090] In step S330, obtain the second temperature inside the electrical cabinet body, and according to the second temperature, adjust the second speed of the second group of fans according to the second mapping relationship, where the second mapping relationship is the relationship between the second temperature and the second speed of the second group of fans.

[0091] Real-time detect the ambient temperature inside the electrical cabinet body, denoted as the second temperature.

[0092] According to the ambient temperature inside the electrical cabinet body, dynamically adjust the speed of the second group of fans (i.e., the second speed), and the rule followed for adjusting the second speed is denoted as the second mapping relationship. Among them, the higher the temperature inside the cabinet, the greater the second speed.

[0093] In step S340, when the second rotation speed reaches the preset second upper limit, increase the first rotation speed of the first group of fans by a preset amplitude.

[0094] The heat dissipation electrical cabinet continues to operate, the second temperature rises, the rotation speed of the second group of fans (i.e., the second rotation speed) is continuously controlled to increase. When the second rotation speed reaches the preset second upper limit, continue to increase the rotation speed of the first group of fans (i.e., the first rotation speed).

[0095] Among them, the preset second upper limit is the upper limit of the rotation speed that the second group of fans can reach.

[0096] In step S350, when the first rotation speed reaches the preset first upper limit, if the first temperature is greater than the preset first temperature threshold, control the heat dissipation electrical cabinet to operate according to the preset power-temperature derating curve.

[0097] The heat dissipation electrical cabinet continues to operate. When the rotation speed of the first group of fans (i.e., the first rotation speed) reaches the preset first upper limit, if the temperature of the power module vaporizer (i.e., the first temperature) continues to rise and reaches the first temperature threshold, control the heat dissipation electrical cabinet to start executing the power derating operation instruction and work according to the preset power-temperature derating curve of the program.

[0098] Among them, the preset first upper limit is the upper limit of the rotation speed that the first group of fans can reach.

[0099] It should be explained that the power derating operation instruction

[0100] The preset first temperature threshold can be set according to the actual situation.

[0101] In step S360, when a failure occurs in the first group of fans and / or the second group of fans, if the first temperature is greater than the preset second temperature threshold or the second temperature is greater than the preset third temperature threshold, control the heat dissipation electrical cabinet to stop.

[0102] The heat dissipation electrical cabinet continues to operate. When an accidental failure occurs in the first group of fans or the second group of fans and fails, and the temperature of the power module vaporizer reaches the preset second temperature threshold or the temperature inside the cabinet reaches the preset third temperature threshold, issue a protection stop instruction to control the heat dissipation electrical cabinet to perform protection stop.

[0103] According to some embodiments, after step S310, it further includes:

[0104] Step S311: Start the capacitor bank vaporizer and the capacitor bank liquefier.

[0105] Furthermore, according to the exemplary embodiments, the method provided by the embodiments of the present method can be executed by the above control device.

[0106] The method controls the device provided above. For other functions, refer to the previous description and will not be elaborated here.

[0107] Figure 4 An electronic device according to an exemplary embodiment of the present application is shown. The following will refer to Figure 4 to describe the electronic device 400 according to this embodiment of the present application. Figure 4 The shown electronic device 400 is merely an example and should not impose any limitation on the functions and the scope of use of the embodiments of the present application.

[0108] As Figure 4 shown, the electronic device 400 is presented in the form of a general-purpose computing device. The components of the electronic device 400 may include, but are not limited to: at least one processing unit 410, at least one storage unit 420, a bus 430 connecting different system components (including the storage unit 420 and the processing unit 410), a display unit 440, etc.

[0109] Among them, the storage unit stores program codes, and the program codes can be executed by the processing unit 410, so that the processing unit 410 executes the methods according to various exemplary embodiments of the present application described in this specification. For example, the processing unit 410 can execute the method as described above.

[0110] The storage unit 420 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 4201 and / or a cache storage unit 4202, and may further include a read-only storage unit (ROM) 4203.

[0111] The storage unit 420 may further include a program / utility 4204 having a set (at least one) of program modules 4205. Such program modules 4205 include, but are not limited to: an operating system, one or more application programs, other program modules, and program data. The implementation of a network environment may be included in each or some combination of these examples.

[0112] The bus 430 may represent one or more of several types of bus structures, including a storage unit bus or a storage unit controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any bus structure in a variety of bus structures.

[0113] The electronic device 400 can also communicate with one or more external devices 300 (such as keyboards, pointing devices, Bluetooth devices, etc.), and can also communicate with one or more devices that enable a user to interact with the electronic device 400, and / or communicate with any device that enables the electronic device 400 to communicate with one or more other computing devices (such as routers, modems, etc.). Such communication can be carried out through the input / output (I / O) interface 450. Moreover, the electronic device 400 can also communicate with one or more networks (such as local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) through the network adapter 460. The network adapter 460 can communicate with other modules of the electronic device 400 through the bus 430. It should be understood that although not shown in the figure, other hardware and / or software modules can be used in combination with the electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0114] Through the description of the above embodiments, those skilled in the art can easily understand that the example embodiments described herein can be implemented by software, or by a combination of software and necessary hardware. The technical solution according to the embodiments of the present application can be embodied in the form of a software product, and the software product can be stored in a non-volatile storage medium (which can be a CD-ROM, USB flash drive, mobile hard disk, etc.) or on the network, including several instructions to enable a computing device (which can be a personal computer, server, or network device, etc.) to execute the above method according to the embodiments of the present application.

[0115] The software product can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive list) of the readable storage medium include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0116] A computer-readable storage medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries readable program code. Such a propagated data signal may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. The readable storage medium may also be any readable medium other than the readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0117] The program code for performing the operations of the present application may be written in any combination of one or more programming languages. The programming languages include object-oriented programming languages such as Java, C++, etc., and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, executed as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., connected through the Internet using an Internet service provider).

[0118] The above computer-readable medium carries one or more programs, and when the one or more programs are executed by a device, the computer-readable medium implements the foregoing functions.

[0119] Those skilled in the art can understand that the above-mentioned modules can be distributed in the device according to the description of the embodiments, or can be correspondingly changed and distributed in one or more devices that are uniquely different from the present embodiment. The modules of the above embodiments can be combined into one module, or further split into multiple sub-modules.

[0120] Figure 5 An energy storage inverter according to an exemplary embodiment of the present application is shown to include the heat dissipation electrical cabinet 100 as described above.

[0121] From the description of the above embodiments, those skilled in the art can easily understand that the exemplary embodiments described herein can be implemented by software or by a combination of software and necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (such as a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.

[0122] The exemplary embodiments of the present application have been specifically shown and described above. It should be understood that the present application is not limited to the detailed structures, setting manners, or implementation methods described herein; on the contrary, the present application is intended to cover various modifications and equivalent settings included within the spirit and scope of the appended claims.

Claims

1. A heat dissipation electrical cabinet, characterized in that, Comprising: The electrical cabinet body; The first heat dissipation subsystem, including an air duct baffle outside the cabinet, which is located outside the electrical cabinet body and is used to jointly form an airtight and continuous air duct outside the cabinet with the outer wall of the electrical cabinet body; The second heat dissipation subsystem, including an air duct baffle inside the cabinet, which is located inside the electrical cabinet body and is used to divide the space inside the electrical cabinet body into an open air duct inside the cabinet and an airtight air duct inside the cabinet.

2. The heat dissipation electrical cabinet according to claim 1, wherein The first heat dissipation subsystem further includes a first group of fans, and the first group of fans is arranged in the airtight and continuous air duct outside the cabinet.

3. The heat dissipation electrical cabinet according to claim 2, wherein, The first heat dissipation subsystem further includes: A power module liquefier, arranged in the airtight and continuous air duct outside the cabinet; and A power module vaporizer, arranged in the open air duct inside the cabinet; Wherein, the heat dissipation electrical cabinet further includes: A first vaporization pipe and a first liquid return pipe, both connected between the power module vaporizer and the power module liquefier, and a preset organic working medium is filled inside both the first vaporization pipe and the first liquid return pipe.

4. The heat dissipation electrical cabinet according to claim 1, wherein The first heat dissipation subsystem further includes a reactor chamber, which is arranged at one end of the airtight and continuous air duct outside the cabinet and is completely isolated from the inside of the electrical cabinet body.

5. The heat dissipation electrical cabinet according to claim 4, characterized in that The first heat dissipation subsystem further includes an air outlet, and the air outlet is arranged on the side wall and / or the bottom of the reactor chamber.

6. The heat dissipation electrical cabinet according to claim 4, wherein The first heat dissipation subsystem further includes a third group of fans, the third group of fans is arranged inside the reactor chamber, and a reactor is also arranged inside the reactor chamber.

7. The heat dissipation electrical cabinet according to claim 1, wherein The first heat dissipation subsystem further includes an air inlet, and the air inlet is provided with an elbow air hood, a filtering device and / or a noise reduction device.

8. The heat dissipation electrical cabinet according to claim 3, characterized in that, The second heat dissipation subsystem further includes a second group of fans, and the second group of fans is arranged at the junction of the open air duct inside the cabinet and the airtight air duct inside the cabinet.

9. The heat dissipation electrical cabinet according to claim 8, characterized in that, The second heat dissipation subsystem further includes: A capacitor bank liquefier, arranged in the airtight and continuous air duct outside the cabinet; and A capacitor bank vaporizer, arranged in the airtight air duct inside the cabinet; Wherein, the heat dissipation electrical cabinet further includes: A second vaporization pipe and a second liquid return pipe, both connected between the capacitor bank vaporizer and the capacitor bank liquefier, and a preset organic working medium is filled inside both the second vaporization pipe and the second liquid return pipe.

10. The heat dissipation electrical cabinet according to claim 1, characterized in that, The electrical cabinet body includes: A capacitor bank, arranged in the airtight air duct inside the cabinet; and A control device and components inside the cabinet, arranged in the open air duct inside the cabinet.

11. A control method for a heat dissipation electrical cabinet according to claim 9, characterized in that, Including: In response to the electrical cabinet start command, start the power module vaporizer and the power module liquefier, and start the first group of fans and the second group of fans at the initial speed; Obtain the first temperature of the power module vaporizer, and adjust the first speed of the first group of fans according to the first temperature according to the first mapping relationship, wherein the first mapping relationship is the relationship between the first temperature and the first speed of the first group of fans; Obtain the second temperature inside the electrical cabinet body, and adjust the second speed of the second group of fans according to the second temperature according to the second mapping relationship, wherein the second mapping relationship is the relationship between the second temperature and the second speed of the second group of fans; When the second rotation speed reaches the preset second upper limit, increase the first rotation speed of the first group of fans by a preset amplitude; When the first rotation speed reaches the preset first upper limit, if the first temperature is greater than the preset first temperature threshold, control the heat dissipation electrical cabinet to operate according to a preset power-temperature derating curve; When a fault occurs in the first group of fans and / or the second group of fans, if the first temperature is greater than the preset second temperature threshold or the second temperature is greater than the preset third temperature threshold, control the heat dissipation electrical cabinet to stop operating.

12. The control method of the heat dissipation electrical cabinet according to claim 11, characterized in that, After starting the power module vaporizer and the power module liquefier in response to the electrical cabinet start command and starting the first group of fans and the second group of fans at the initial rotation speed, it further includes: Starting the capacitor bank vaporizer and the capacitor bank liquefier.

13. An electronic device, characterized in that, Comprising: One or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, enabling the one or more processors to implement the method according to claim 11 or 12.

14. A computer-readable storage medium having a computer program or instructions stored thereon, characterized in that, The computer program or instruction, when executed by a processor, implements the method according to claim 11 or 12.

15. A power storage converter, characterized in that, Including the heat dissipation electrical cabinet according to any one of claims 1-10.

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