Alternating current control cabinet and design method thereof, electronic equipment and storage medium

Abstract

The invention is suitable for the technical field of energy storage, and provides an alternating current control cabinet and a design method thereof, electronic equipment and a storage medium, and the method comprises the steps: determining the parameters of an energy storage converter according to the input information of an energy storage system; determining a design scheme of the AC control cabinet according to the design requirements of the AC control cabinet, the parameters of the energy storage converter and the principle of lowest cost; calculating heat dissipation parameters according to the design scheme; and outputting a design scheme under the condition that the heat dissipation parameters meet the heat dissipation requirements, and repeatedly executing calculation of the heat dissipation parameters according to the design scheme and subsequent steps after the design scheme is adjusted under the condition that the heat dissipation parameters do not meet the heat dissipation requirements.

Description

Technical Field

[0001] The present application belongs to the field of energy storage, and in particular relates to an AC control cabinet and a design method thereof, an electronic device and a computer-readable storage medium. Background Art

[0002] There are generally two solutions for distributed commercial energy storage systems. The first is to integrate the AC control and DC battery system into a cabinet through a compartment design, with the AC system and the DC system matched 1 to 1, also known as all in one. This solution has good integrity due to the integrated design of the DC system and the AC system, but when the application scenario, working conditions, etc. change, the entire energy storage system needs to be completely redesigned, with high development and design costs and a long design cycle; the second is to design a cabinet for the AC control system separately, with 1 to N sets of AC systems installed in the cabinet, and multiple energy storage converters (PCS) matched with the DC system, and multiple PCSs can be adapted. The design of an AC control cabinet with multiple PCSs is still a problem to be solved. Summary of the invention

[0003] The embodiments of the present application provide an AC control cabinet and a design method thereof, an electronic device and a computer-readable storage medium, which can solve the problem of designing an AC control cabinet with multiple PCSs in the related art.

[0004] In a first aspect, an embodiment of the present application provides an AC control cabinet design method, the method comprising: determining parameters of an energy storage inverter according to input information of an energy storage system; determining a design scheme of the AC control cabinet according to the design requirements of the AC control cabinet and the parameters of the energy storage inverter, in accordance with the principle of lowest cost; calculating heat dissipation parameters according to the design scheme; outputting the design scheme when the heat dissipation parameters meet the heat dissipation requirements, and adjusting the design scheme and repeating the steps of calculating the heat dissipation parameters according to the design scheme and subsequent steps when the heat dissipation parameters do not meet the heat dissipation requirements.

[0005] In a second aspect, an embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable by the processor, and when the processor executes the computer program, the AC control cabinet design method described in the first aspect above is implemented.

[0006] In a third aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the AC control cabinet design method described in the first aspect above.

[0007] In a fourth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run on an electronic device, the electronic device executes the AC control cabinet design method described in the first aspect above.

[0008] In a fifth aspect, an embodiment of the present application provides an AC control cabinet, which is obtained by adopting the design solution provided by the AC control cabinet design method described in the first aspect above.

[0009] Compared with the prior art, the embodiments of the present application have the following beneficial effects: by determining the parameters of the energy storage converter according to the input information of the energy storage system; determining the design scheme of the AC control cabinet according to the design requirements of the AC control cabinet and the parameters of the energy storage converter in accordance with the principle of lowest cost; calculating the heat dissipation parameters according to the design scheme; outputting the design scheme when the heat dissipation parameters meet the heat dissipation requirements, and repeating the steps of calculating the heat dissipation parameters according to the design scheme and subsequent steps after adjusting the design scheme when the heat dissipation parameters do not meet the heat dissipation requirements. Cost reduction and efficiency improvement can be achieved while ensuring heat dissipation performance, and a suitable design scheme can be obtained by simple and fast iteration. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 is a structural schematic diagram of an electronic device provided by an embodiment of the present application;

[0012] Figure 2 It is a flowchart of an AC control cabinet design method provided in an embodiment of the present application;

[0013] Figure 3 It is a specific flow chart of the AC control cabinet design method provided by a specific embodiment of the present application;

[0014] Figure 4 is a front cross-sectional view of an AC control cabinet designed according to Example 1 of the present application;

[0015] Figure 5 is a side sectional view of an AC control cabinet designed according to Example 1 of the present application;

[0016] Figure 6 is a side exploded view of an AC control cabinet designed according to Example 1 of the present application;

[0017] Figure 7 yes Figure 5 Front view of the medium energy storage converter;

[0018] Figure 8 yes Figure 6 Schematic diagram of the partial structure of the air inlet of the middle cabinet;

[0019] Fig. 9 is a side sectional view of an AC control cabinet designed according to Example 2 of the present application;

[0020] Fig.10 is a front cross-sectional view of an AC control cabinet designed according to Example 3 of the present application;

[0021] Fig.11 is a side sectional view of an AC control cabinet designed according to Example 3 of the present application;

[0022] Fig.12 This is a front view of the AC control cabinet designed according to Example 3 of the present application. DETAILED DESCRIPTION

[0023] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0024] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0025] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0026] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0027] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0028] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0029] The AC control cabinet design method provided in the embodiment of the present application can be applied to electronic devices, including but not limited to servers, server clusters, mobile phones, tablet computers, laptop computers, desktop computers, personal digital assistants, wearable devices and other electronic devices with computing functions. The embodiment of the present application does not impose any restrictions on the specific type of electronic devices.

[0030] Figure 1 FIG. 1 is a block diagram of a partial structure of an electronic device provided in an embodiment of the present application. Figure 1 , the electronic device includes: a processor 10, a memory 20, a bus 30, an input device 40, an output device 50 and a communication device 60. The processor 10 and the memory 20 are connected to each other through the bus 30, and the input device 40, the output device 50 and the communication device 60 are also connected to the bus 30. Those skilled in the art can understand that Figure 1 The structure of the electronic device shown in the figure does not constitute a limitation of the electronic device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0031] Combine the following Figure 1 A detailed introduction to the various components of electronic equipment:

[0032] The processor 10 is the control center of the electronic device, and can run the program stored in the memory 20 to perform various functions and process data. The processor 10 can be a central processing unit (CPU), and the processor 10 can also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. In some embodiments, the processor 10 may include an AI (Artificial Intelligence) processor, which is used to process computing operations related to machine learning.

[0033] The memory 20 is used to store an operating system, an application program, a boot loader, data, and other programs, such as program codes of computer programs. The memory 20 can also be used to temporarily store data required for executing the program and generated. The memory 20 may include a high-speed random access memory, and may also include a non-volatile memory, such as a flash memory, a hard disk, a multimedia card, a card-type memory, etc. The memory 20 may include a storage unit disposed inside the electronic device, such as a hard disk of the electronic device, and / or a removable external storage unit, such as a mobile hard disk, a USB flash drive, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, etc.

[0034] The input device 40 may include at least one of a keyboard, a mouse, a touch panel, a joystick, etc., and is used to collect user input operations to generate corresponding operation instructions.

[0035] The output device 50 is used to output information to be provided to the user. The output device 50 generally includes a display, and optionally, a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc. can be used. In addition, the output device can further include a speaker.

[0036] The communication device 60 may include a modem, a network card, etc., for establishing a network connection with other electronic devices and communicating with each other.

[0037] The AC control cabinet design method provided in the embodiment of the present application can be implemented as a computer software program. For example, the embodiment of the present application provides a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication device 60, and / or installed from a removable external storage unit. When the computer program is executed by the processor 10, the various functions defined in the AC control cabinet design method provided in the embodiment of the present application are implemented.

[0038] Figure 2 A schematic flowchart of an AC control cabinet design method provided in an embodiment of the present application is shown. As an example but not a limitation, the method can be applied to the above-mentioned electronic equipment.

[0039] S1: Determine the parameters of the energy storage converter according to the input information of the energy storage system.

[0040] The energy storage system input information may include rated power, series-parallel scheme, operating conditions, battery capacity, series-parallel and off-grid modes, maximum electrical operating temperature, voltage, current, safety requirements, etc. The parameters of the energy storage converter (PCS) may include its model, size, heating power, required circulation air volume and / or fan specifications, etc. In addition to the parameters of the energy storage converter, the parameters of the control component, such as the size of the control component, etc., can also be derived based on the energy storage system input information. The control component is part of the AC control cabinet, which mainly includes electrical switches and other devices used to control the energy storage converter.

[0041] S2: According to the design requirements of the AC control cabinet and the parameters of the energy storage inverter, determine the design plan of the AC control cabinet according to the principle of lowest cost.

[0042] The AC control cabinet includes a control component, an energy storage converter, an air duct component, a structural main body, and auxiliary panels. The control component and the energy storage converter are placed in different cabins in the AC control cabinet. The cabins can be separate boxes connected to each other by cables, or they can be structural area divisions of a single cabinet. The auxiliary panels can include air baffles to seal the gaps between the PCS and the cabinet, between the control component and the cabinet, and other areas with gaps to ensure that hot air can be effectively discharged and avoid short circuits and backflow.

[0043] The main design requirements for determining the design of the AC control cabinet can include heat dissipation, electrical safety, structural requirements, etc. For example, the total height of the AC cabinet should not exceed 2.35m to facilitate transportation and installation. The principle of minimum cost is generally reflected in placing as many energy storage converters as possible and installing as few additional devices as possible, such as avoiding adding insulation layers and adding additional fans.

[0044] The design scheme of the AC control cabinet may include the number of energy storage converters to be installed, the size of the cabinet, the size of the air duct, etc. Specifically, the number of energy storage converters to be installed may be calculated based on the cabinet height of the AC control cabinet and the size of the energy storage converter, the size of the air duct may be determined based on the heat dissipation related parameters (such as ventilation area, ventilation volume, etc.) of the energy storage converter and the number of installations, and the overall size of the AC control cabinet may be determined based on the size of the energy storage converter and the air duct.

[0045] For the parameters that need to be determined in the design scheme, they can be calculated separately, that is, only some parameters are calculated in one round, and the remaining parameters take the default values ​​according to the principle of lowest cost. After the subsequent verification of the heat dissipation parameters determines that these parameters are feasible, other parameters are replaced for calculation. Alternatively, all the parameters that need to be determined can be solved at one time as an overall optimization problem. This application does not limit the specific calculation method. For the sake of ease of expression, the former case is used as an example in the embodiment of this application.

[0046] S3: Calculate heat dissipation parameters according to the design solution.

[0047] The heat dissipation parameters may include at least one of a theoretical average wind speed, an air temperature rise, and a theoretical door ventilation area.

[0048] PCS is the main heat source of the AC control cabinet and generally has its own cooling fan. The parameters of PCS include ventilation area and circulating air volume. After the PCS is placed in the cabinet, the increase in air duct leads to increased wind resistance, among which the wind speed significantly affects the wind resistance value, and the total circulating air volume affects the heat dissipation effect of PCS. Therefore, there is a certain correlation between air volume, cabinet air duct ventilation area, and wind speed.

[0049] According to the formula circulating air volume = ventilation area * wind speed, in order to ensure the overall heat dissipation effect of the AC control cabinet, the theoretical average wind speed in the heat dissipation parameters can be the maximum wind speed required for heat dissipation, that is, the theoretical average wind speed at the minimum cross-sectional area of ​​the air duct. The higher the calculated theoretical average wind speed means the higher the requirements for the fan.

[0050] Air temperature rise refers to the air temperature rise under extreme working conditions, which can be calculated based on the number of installations and the heating power and circulating air volume in the parameters of the energy storage converter. The air temperature rise reflects the highest temperature that may occur in the AC control cabinet. Excessive air temperature rise will affect the normal operation of the control components and PCS.

[0051] The door ventilation area can also be called the cabinet ventilation area, or simply the ventilation area. It is the part of the AC control cabinet that exchanges heat with the outside world, including the air inlet and outlet. The theoretical door ventilation area is the minimum area of ​​the ventilation area that meets the heat dissipation requirements. The calculation formula can be ventilation area * installation quantity * ventilation coefficient A, where the ventilation area can be the rated ventilation area of ​​the PCS or the actual ventilation area of ​​the PCS. The ventilation coefficient A is determined according to the structure of the air duct and the door body, reflecting the ventilation efficiency of the AC control cabinet, and is negatively correlated with the equivalent ventilation rate of the ventilation area.

[0052] The increase in the door ventilation area means that the heat exchange area between the AC control cabinet and the outside world increases, which can reduce the air duct resistance. However, unlimited increase in the door ventilation area will not only affect other structural designs, but also reduce the waterproof and dustproof effect of the cabinet. Therefore, the theoretical door ventilation area can be calculated according to the above formula to optimize the door design.

[0053] The ventilation coefficient A can be set according to parameters such as the length of the air duct, the form of the inlet and outlet air ducts, and the equivalent ventilation rate. Generally speaking, the higher the ventilation efficiency determined by these parameters, the smaller the ventilation coefficient A, and the smaller the required door ventilation area.

[0054] The equivalent ventilation rate is the ventilation rate of the ventilation area itself, which is determined by the actual structure of the ventilation area. Specifically, it may include the size, density, distribution of the openings, whether there are additional structures such as waterproof blinds and dustproof cotton, etc. The final ventilation rate of door openings or blinds. Generally speaking, the presence of waterproof blinds and dustproof cotton will reduce the equivalent ventilation rate. The larger the openings and the higher the density, the higher the equivalent ventilation rate.

[0055] For example, the cross-sectional area of ​​the air duct from the cabinet air inlet area to the PCS should be gradually reduced, and the cross-sectional area from the PCS to the cabinet air outlet area should be gradually increased. The reduction angle can be no more than 20°, and the expansion angle can be no more than 10°. The setting range of ventilation coefficient A can be 0.8-3. Considering only the door structure, if the door is fully open and there are no additional structures such as waterproof shutters and dustproof cotton, the ventilation coefficient A can be set to 0.8-1.1; if the door is a structure with larger openings such as a mesh plate, the ventilation coefficient A can be set to 1.2; if the door is an open structure and has additional structures such as waterproof shutters and dustproof cotton, the ventilation coefficient A can be set to 1.5-2. If the air duct in the cabinet is long or has many bends, the ventilation coefficient A can be appropriately increased.

[0056] S4: Determine whether the heat dissipation parameters meet the heat dissipation requirements.

[0057] The parameters of the corresponding fan can be calculated based on the theoretical average wind speed, and then compared with the parameters of the cooling fan that comes with the PCS. In actual applications, to simplify the judgment process, a first threshold can be set for the theoretical average wind speed based on the performance of the cooling fan that comes with the PCS. If the theoretical average wind speed is less than or equal to the first threshold, it means that the cooling fan that comes with the PCS can meet the cooling requirements and no modification is required. Otherwise, it means that the cooling fan that comes with the PCS cannot meet the cooling requirements and the design solution needs to be adjusted.

[0058] The air temperature rise may be compared with a second threshold value. If the air temperature rise is less than or equal to the second threshold value, it means that the heat dissipation requirement is met; otherwise, the heat dissipation requirement is not met.

[0059] The theoretical door ventilation area can be compared with the actual door ventilation area. If the theoretical door ventilation area is less than or equal to the actual door ventilation area, it means that the heat dissipation demand is met, otherwise the heat dissipation demand is not met.

[0060] If yes, jump to S5, otherwise jump to S6.

[0061] S5: Output the design plan.

[0062] The final output design plan includes parameters of the AC control cabinet and its PCS, control components and other devices, such as the specific size of the cabinet, the specific size of the air duct, the specific structure of the cabinet ventilation area, the number of PCS, etc.

[0063] The AC control cabinet includes control components, energy storage converters and a cabinet body, and the cabinet body is provided with a cabinet ventilation area, including a cabinet air inlet and a cabinet vent. According to the final design plan, the AC control cabinet can selectively install other auxiliary panels and components, such as thermal insulation layers, wind shields, auxiliary ventilators, etc.

[0064] S6: Adjust the design plan.

[0065] When the theoretical average wind speed does not meet the heat dissipation requirements, the design can be adjusted by increasing the size of the duct, reducing the number of PCS, adding auxiliary fans, etc. For example, two thresholds V1 and V2 can be set for the theoretical average wind speed. The theoretical average wind speed ≤ V1 meets the requirements; the theoretical average wind speed is between V1-V2, and the wind speed can be reduced by increasing the size of the duct, reducing the number of installations, etc.; the theoretical average wind speed > V2, it is necessary to increase the auxiliary fan, reduce the number of PCS, and increase the size of the duct.

[0066] Increasing the size of the air duct can be achieved by increasing the depth and / or width of the cabinet. Specifically, in order to ensure the overall aesthetics of the installation, the depth of the battery cabinet can be kept consistent with the depth of the cabinet. Therefore, when the adjustable range of the cabinet depth is not large, that is, the error between the cabinet depth and the battery cabinet depth is not large, it is preferred to increase the cabinet width; when the cabinet depth is significantly smaller than the battery cabinet depth, it is preferred to increase the cabinet depth, and then consider increasing the cabinet width after the cabinet depth reaches the battery cabinet depth; when there is no limit to the adjustment of the cabinet depth and cabinet width, and only one adjustment is required to meet the requirements, it is preferred to choose a solution with a smaller final footprint.

[0067] When the air temperature rise does not meet the heat dissipation requirements, the design solution can be adjusted by adding a heat insulation layer, installing an auxiliary fan, and reducing the number of installations. For example, when the air temperature rise is greater than the second threshold and less than or equal to the third threshold, adding a heat insulation layer can ensure that the maximum temperature in the cabinet will not affect the normal operation of the control components and PCS; when the air temperature rise is greater than the third threshold, the heat insulation layer cannot ensure the safety of the maximum temperature in the cabinet, and it is necessary to install an auxiliary fan and / or reduce the number of installations.

[0068] The thermal insulation layer can be set at the interface between the PCS and the control component, and the interface between the air outlet duct and the control component. The thermal insulation layer can be an air interlayer or a thermal insulation material with low thermal conductivity, such as PU, aerogel, asbestos, rubber, etc.

[0069] When the theoretical door ventilation area does not meet the heat dissipation requirements, the design can be adjusted by increasing the actual door ventilation area and / or modifying the door inlet and outlet area structure to improve the equivalent ventilation rate. Modifying the door inlet and outlet area structure may include increasing the opening area, removing at least one of the additional structures such as waterproof louvers and dustproof cotton.

[0070] Then jump to S3 to iteratively update the design solution.

[0071] Through the implementation of this embodiment, cost reduction and efficiency improvement can be achieved while ensuring heat dissipation performance, and a suitable design solution can be obtained through simple and rapid iteration.

[0072] The following is an example of the specific design process of the AC control cabinet with the help of the attached figure. Figure 3 As shown, the AC control cabinet design method provided by a specific embodiment of the present application includes the following parts. Figure 2 This is a further extension of the illustrated embodiment, and the same parts thereof will not be repeated here.

[0073] S10: Determine parameters of the energy storage converter according to the energy storage system input information.

[0074] S11: Determine the cabinet size of the AC control cabinet according to the design requirements of the AC control cabinet.

[0075] Cabinet dimensions include cabinet height, cabinet width and cabinet depth.

[0076] S12: Determine the installation height for installing the energy storage converter according to the cabinet height and the heights of other components.

[0077] S13: Calculate the maximum number of energy storage converters allowed to be installed according to the installation height and the height in the parameters of the energy storage converter as the installation number of the energy storage converters.

[0078] S14: Determine the air duct size according to the installation quantity, cabinet size and ventilation area in the parameters of the energy storage converter.

[0079] S15: Calculate the theoretical average wind speed at the minimum cross-sectional area of ​​the air duct as a heat dissipation parameter according to the air duct size, the number of installations, and the circulating air volume in the parameters of the energy storage converter.

[0080] S16: Determine whether the theoretical average wind speed is less than or equal to a first threshold.

[0081] If so, it means that the theoretical average wind speed meets the heat dissipation requirement, and the process jumps to S18; otherwise, it means that the theoretical average wind speed does not meet the heat dissipation requirement, and the process jumps to S17.

[0082] S17: Execute at least one of increasing the cabinet depth, increasing the cabinet width, reducing the number of installations, and installing an auxiliary fan.

[0083] Jump to S15.

[0084] S18: Calculate the air temperature rise as a heat dissipation parameter based on the installation quantity and the heating power and circulating air volume in the parameters of the energy storage inverter.

[0085] S19: Determine whether the air temperature rise is less than or equal to a second threshold.

[0086] If so, it means that the air temperature rise meets the heat dissipation requirement, and the process jumps to S23; otherwise, it means that the air temperature rise does not meet the heat dissipation requirement, and the process jumps to S20.

[0087] S20: Determine whether the air temperature rise is less than or equal to a third threshold.

[0088] If so, jump to S21; otherwise jump to S22.

[0089] S21: Add insulation layer.

[0090] Jump to S18.

[0091] S22: Install auxiliary fans and / or reduce the number of installations.

[0092] Jump to S18.

[0093] S23: Determine the equivalent ventilation rate according to the structure of the air inlet and outlet areas of the door body, and determine the ventilation coefficient according to the air duct properties and the equivalent ventilation rate.

[0094] S24: Calculate the theoretical door ventilation area as a heat dissipation parameter according to the ventilation coefficient, the number of installations and the ventilation area in the parameters of the energy storage inverter.

[0095] S25: Determine whether the theoretical door ventilation area is less than or equal to the actual door ventilation area.

[0096] If so, it means that the theoretical door ventilation area meets the heat dissipation requirement, and the process jumps to S27; otherwise, it means that the theoretical door ventilation area does not meet the heat dissipation requirement, and the process jumps to S26.

[0097] S26: Increase the actual door ventilation area and / or modify the door inlet and outlet air structure to improve the equivalent ventilation rate.

[0098] Jump to S23.

[0099] S27: Output the design plan.

[0100] The following example illustrates the design process of an AC control cabinet and the resulting AC control cabinet.

[0101] Example 1:

[0102] According to the requirements of cabinet dimensions, grid-connected and off-grid modes, and electrical performance parameters of the energy storage system, the selected PCS parameters are as follows: dimensions: width 530mm, height 230mm, ventilation area 0.03㎡, required ventilation volume 15m 3 / min, and when running at rated power, the heat generation power is 3500W. In addition, after preliminary stacking, the height of the control component part needs to occupy about 800mm, the height of the UPS is about 250mm, and the height of the base & lifting ring and other structural parts is about 400mm. Therefore, the height that the PCS can be arranged is about 950mm. Combined with the height of the PCS of 230mm, the preliminary installation quantity is 4.

[0103] The minimum dimension in the cabinet width direction is determined according to the larger value of the PCS width and the control component width, thereby determining the initial size of the AC control cabinet. The initial design depth of the cabinet is 1250mm, the width of the air inlet duct is 150mm, and the width of the air outlet duct is 175mm.

[0104] Calculated from the ventilation area and installation quantity of PCS: the cross-sectional area of ​​the air duct needs to reach 0.12㎡, so it can be calculated that the cabinet width is at least 800mm.

[0105] The total circulating air volume of 4 PCS is 60m 3 / min, since the cross-sectional area of ​​the air inlet duct is the smallest, the average wind speed can be calculated to be: 8.33m / s; the wind speed threshold V1 is 8m / s, and the cross-sectional size of the air duct needs to be increased. Therefore, the cabinet depth is deepened to 1300mm, the air inlet duct width is 175mm, and the air outlet duct width is 225mm.

[0106] The second threshold dT2 is 10°C, and the third threshold dT3 is 15°C. The heating power of a single PCS is 3500W. Therefore, according to the specific heat capacity and density of air at room temperature, the air temperature rise dT1 is about 11.4°C, which is between the second and third thresholds, so an insulation layer needs to be added.

[0107] The air inlet of the cabinet door is composed of shutters and dust-proof cotton. The equivalent ventilation rate is about 35%. The ventilation coefficient A is 1.5. The required door ventilation area is 0.5143㎡, and the actual ventilated area size is 610mm*850mm, that is, 0.5185㎡, which meets the requirements.

[0108] The cabinet air outlet is located on the side of the cabinet and can be opened on either side or both sides as needed. Taking the opening on one side as an example, the air outlet adopts a mesh plate design scheme, the equivalent ventilation rate is about 75%, and the ventilation coefficient A is 1.2. The required theoretical door ventilation area is 0.192㎡, and the actual ventilated area size is 200mm*1000mm, that is, 0.2㎡, which meets the needs.

[0109] The AC control cabinet designed in this example is as follows Figure 4-6 As shown, the AC control cabinet 100 includes a PCS 110, a control component 120, a cabinet 130, a heat insulation layer 141 and a wind shield 142. The front view of the PCS 110 is shown in FIG. Figure 7 As shown, the cabinet 130 includes a first door 131 and a second door 132. The first door 131 is provided with a cabinet air inlet 1310, and the second door 132 is provided with a cabinet air outlet 1320. The specific structure of the first door 131 is as shown in FIG. Figure 8 As shown, it includes a shutter 1311 and a dustproof cotton 1312. The air inlet duct 151 and the air outlet duct 152 are as shown in FIG. Figure 5 A cabinet air inlet duct cover 1313 is also provided on the side of the control component 120 facing the first door body 131 to isolate the air inlet duct 151 and the control component 120.

[0110] Example 2:

[0111] In this example, the height of the selected PCS is relatively high, and the calculation shows that only 3 PCS can be arranged at most. The ventilation area of ​​a single PCS is 0.035㎡, and the ventilation volume requirement is 18m 3 / min, when running at rated power, the heating power is 3000W / unit.

[0112] The air inlet and outlet of this cabinet are located at the top, facing the PCS. Due to the low opening rate of the air inlet, the minimum air duct area is the cabinet air inlet. The equivalent ventilation rate of the cabinet air inlet is about 35%. It can be calculated that when the door ventilation area is 0.1125㎡, the wind speed can be less than or equal to the first threshold. The actual ventilation area size is 600mm*800mm, i.e. 0.48㎡, which meets the heat dissipation requirements.

[0113] The second threshold dT2 is 10°C, and the third threshold dT3 is 15°C. The heating power of a single PCS is 3000W. Therefore, according to the specific heat capacity and density of air at room temperature, dT1 is about 8.13°C, dT1<dT2, and no additional insulation layer is needed.

[0114] The AC control cabinet designed in this example is as follows Fig. 9 As shown, the AC control cabinet 200 includes a PCS 210, a control component 220 and a cabinet 230. The upper portion of the cabinet 230 is provided with a cabinet air inlet 2310 and a cabinet air outlet 2320.

[0115] Example 3:

[0116] The AC control cabinet is designed with left and right compartments, with control components on the left and PCS and UPS on the right. According to the height dimensions of the cabinet and PCS, up to 6 PCS can be arranged.

[0117] The ventilation area of ​​this single PCS is 0.032㎡, and the ventilation volume requirement is 15m 3 / min, when running at rated power, the heating power is 1600W / unit. A ventilator needs to be added on one side of the control component, and the circulating air volume is 12.5m 3 / min, UPS circulation air volume 0.75m 3 / min.

[0118] Due to the shared air outlet duct, if 6 PCS+UPS are arranged, the minimum cross-section is the cabinet side wall air outlet, and the calculated average wind speed is 9.39m / s, which is greater than the wind speed threshold V1 of 8m / s. Therefore, considering the comprehensive performance and cost, the number of PCSs installed is set to 5, and the recalculated average wind speed is about 8.03m / s, which can be considered to be approximately equal to the wind speed threshold V1, meeting the heat dissipation requirements.

[0119] The air inlet of this cabinet is located at the top, facing the PCS. Due to the low opening rate of the air inlet, the minimum air duct area is the cabinet air inlet. The equivalent ventilation rate of the cabinet air inlet is about 35%. Calculation shows that: when the door ventilation area is 0.458㎡, the wind speed threshold V1 can be met; the actual ventilated area size of the cabinet is 700mm*2200mm, that is, 1.54㎡, which meets the demand.

[0120] The second threshold dT2 is 10° C., and the third threshold dT3 is 15° C. The heating power of a single PCS in the embodiment is 1600W. Therefore, according to the specific heat capacity and density of air at room temperature, the air temperature rise dT1 is about 7.8° C., dT1<dT2, and no additional insulation layer is required.

[0121] The AC control cabinet designed in this example is as follows Figure 10-12 As shown, the AC control cabinet 300 includes a PCS 310, a control component 320, a UPS 330, a cabinet 340 and a ventilator 350. The cabinet 340 is provided with a cabinet air inlet 3410 and a cabinet air outlet 3420.

[0122] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0123] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0124] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0125] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device that can carry the computer program code to the camera / electronic device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0126] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0127] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0128] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0129] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0130] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for designing an AC control cabinet, characterized in that: The method comprises: Determine the parameters of the energy storage converter according to the input information of the energy storage system; According to the design requirements of the AC control cabinet and the parameters of the energy storage converter, the design scheme of the AC control cabinet is determined in accordance with the principle of lowest cost; Calculating heat dissipation parameters according to the design scheme; When the heat dissipation parameters meet the heat dissipation requirements, the design scheme is output; when the heat dissipation parameters do not meet the heat dissipation requirements, the design scheme is adjusted and then the steps of calculating the heat dissipation parameters according to the design scheme and subsequent steps are repeated.

2. The method according to claim 1, characterized in that According to the design requirements of the AC control cabinet and the parameters of the energy storage converter, and in accordance with the principle of lowest cost, the design scheme of the AC control cabinet is determined to include: Determine the cabinet size of the AC control cabinet according to the design requirements of the AC control cabinet, wherein the cabinet size includes cabinet height, cabinet width and cabinet depth; Determine the installation height for installing the energy storage converter according to the height of the cabinet and the heights of other components; The maximum number of the energy storage converters allowed to be installed is calculated according to the installation height and the height in the parameters of the energy storage converter as the installation number of the energy storage converters.

3. The method according to claim 2, characterized in that Calculating the heat dissipation parameters according to the design scheme includes: Determine the size of the air duct according to the installation quantity, the cabinet size and the ventilation area in the parameters of the energy storage converter; Calculate the theoretical average wind speed at the minimum cross-sectional area of ​​the air duct as a heat dissipation parameter according to the air duct size, the number of installations and the circulating air volume in the parameters of the energy storage converter; When the theoretical average wind speed is less than a first threshold, it is determined that the heat dissipation requirement is met, and when the theoretical average wind speed is greater than or equal to the first threshold, it is determined that the heat dissipation requirement is not met.

4. The method according to claim 3, characterized in that The adjustment of the design scheme includes at least one of increasing the depth of the cabinet, increasing the width of the cabinet, reducing the number of installations, and adding an auxiliary fan.

5. The method according to claim 2, characterized in that Calculating the heat dissipation parameters according to the design scheme includes: Calculate the air temperature rise as a heat dissipation parameter according to the installation quantity and the heating power and circulating air volume in the parameters of the energy storage converter; When the air temperature rise is less than or equal to the second threshold, it is determined that the heat dissipation requirement is met, and when the air temperature rise is greater than the second threshold, it is determined that the heat dissipation requirement is not met.

6. The method according to claim 5, characterized in that The adjusting of the design scheme comprises: When the air temperature rise is greater than the second threshold and less than or equal to the third threshold, adding a heat insulation layer; When the air temperature rise is greater than the third threshold, an auxiliary fan is installed and / or the installation quantity is reduced.

7. The method according to claim 2, characterized in that Calculating the heat dissipation parameters according to the design scheme includes: Determine an equivalent ventilation rate according to the structure of the air inlet and outlet areas of the door body, and determine a ventilation coefficient according to the equivalent ventilation rate and air duct properties; Calculate the theoretical door ventilation area as a heat dissipation parameter according to the ventilation coefficient, the installation quantity and the ventilation area in the parameters of the energy storage converter; When the theoretical door ventilation area is less than or equal to the actual door ventilation area, it is determined that the heat dissipation requirement is met; when the theoretical door ventilation area is greater than the actual door ventilation area, it is determined that the heat dissipation requirement is not met.

8. The method according to claim 7, characterized in that The adjustment of the design scheme includes increasing the actual door ventilation area and / or modifying the door inlet and outlet air area structure to increase the equivalent ventilation rate.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 8 is implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 8 is implemented.

11. An AC control cabinet, characterized in that: The AC control cabinet is obtained by adopting the design solution provided by the method according to any one of claims 1 to 8.

12. The AC control cabinet according to claim 11, characterized in that: Also includes windbreak.

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