Modularized energy storage current transformation boosting device

Abstract

The utility model provides modularized energy storage current transformation and boost equipment, relates to the technical field of energy storage equipment, and aims to solve the problem that in the prior art, the service life of a device is shortened due to the fact that indoor temperature rises due to a converter. Comprising a boosting cabin and a converter, a bottom plate of the boosting cabin extends from the interior of the boosting cabin to the exterior of the boosting cabin in the first direction, an outdoor platform is formed on one side of the boosting cabin, the converter is arranged on the outdoor platform, and the converter is electrically connected with the boosting cabin through a first wire; the interior of the boosting cabin is divided into a transformer chamber, a high-voltage chamber and a low-voltage chamber through partition plates. The modularized energy storage current transformation boosting device has a good heat dissipation effect, avoids accidents caused by the fact that heat dissipation is not timely due to indoor arrangement, and meanwhile reduces energy consumption needed by a heat dissipation device.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage devices, in particular to a modular energy storage converter and booster device. Background Art

[0002] With the development of power technology and the impetus of carbon peaking and carbon neutrality, energy storage power stations, as one of the components of the power grid, have developed rapidly and received increasing attention. They are widely used in various links of power generation, transmission, distribution, and consumption to achieve functions such as peak shaving and valley filling, suppressing the fluctuations of new energy, output tracking and adjustment, frequency modulation and peak regulation, demand management, black start, and demand-side response. They can not only perform energy time-shifting on new energy power generation and extend the system power supply time, but also through coordinated control by the energy management system to suppress the volatility and intermittency of photovoltaic and wind power, and provide functions such as peak regulation, frequency modulation, voltage regulation, power prediction correction, and planned curve fitting, improving the grid friendliness of new energy power generation and increasing the benefits of new energy power generation. Currently, energy storage power stations have disadvantages such as a large number of existing devices, scattered layouts, large floor areas, large on-site construction workloads, long construction periods, large heat dissipation of inverters, and large construction investments. There is an urgent need for a new solution.

[0003] The patent application document with the application number 202221721648.4 discloses an energy storage cabin, including a cabin body with a length extending in the left-right direction and a plurality of partition boards arranged in the cabin body. The partition boards divide the space in the cabin body into at least four cabins: a battery room, an equipment room, a transformer room, and a high-voltage room. A battery stack is installed in the battery room, a bidirectional converter is installed in the equipment room, a step-up transformer is installed in the transformer room, and a high-voltage switch cabinet is installed in the high-voltage room. The battery stack, bidirectional converter, step-up transformer, and high-voltage switch cabinet are connected in sequence through cables. Cable through-holes for cables to pass through are provided on the partition boards between adjacent cabins, and cabin inspection doors corresponding to the battery room, equipment room, transformer room, and high-voltage room are provided on the cabin body. This energy storage cabin integrates the installation of the battery stack, bidirectional converter, step-up transformer, and high-voltage switch cabinet in the same cabin body. Since the inverter has a large heat dissipation and is likely to affect other electrical components and is not conducive to heat dissipation, there is an urgent need for an energy storage device with good heat dissipation and high integration. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a modular energy storage converter and booster device to solve the problem in the prior art that the temperature in the room rises due to the inverter, resulting in a reduction in the device life. The modular energy storage converter and booster device of the utility model has a good heat dissipation effect, avoids accidents caused by untimely heat dissipation due to indoor layout, and reduces the energy consumption required for the device heat dissipation equipment at the same time.

[0005] A modular energy storage converter and booster device provided by the utility model has a first direction and includes:

[0006] A step-up cabin, the bottom plate of the step-up cabin extends from the inside of the step-up cabin to the outside of the step-up cabin along the first direction and forms an outdoor platform on one side of the step-up cabin.

[0007] An inverter, the inverter is arranged on the outdoor platform, and the inverter is electrically connected to the step-up cabin through a first wire.

[0008] Wherein, the inside of the step-up cabin is separated by a partition to form a transformer room, a high-voltage room and a low-voltage room. The transformer room is arranged on one side of the step-up cabin close to the transformer room, and the high-voltage room and the low-voltage room are arranged in parallel on the side of the step-up cabin far from the transformer room.

[0009] As a preferred solution of the present utility model, a step-up transformer is arranged in the transformer room, and a metal cable trough box for shielding the interference of high voltage to control cables and communication cables is arranged around the step-up transformer; the step-up cabin has corresponding first side and second side in the second direction, and cabin doors are respectively arranged on the first side and the second side corresponding to both sides of the step-up transformer. An electromagnetic lock and a micro switch for preventing personnel from electric shock are installed on the inner side of the cabin door, and the micro switch is electrically connected to the electromagnetic lock.

[0010] As a preferred solution of the present utility model, a high-voltage switch, high-voltage insulators and a plurality of lightning arrester counters are arranged in the high-voltage room. The high-voltage switch includes a high-voltage circuit breaker, a high-voltage current transformer, a high-voltage disconnector, a high-voltage earthing switch and a high-voltage lightning arrester. The high-voltage insulators are arranged on the side of the high-voltage room far from the transformer room, and the plurality of lightning arrester counters are arranged in the third direction and are located on the side of the high-voltage room far from the low-voltage room.

[0011] As a preferred solution of the present utility model, a communication power cabinet and an auxiliary transformer are arranged in the low-voltage room. The communication power cabinet is arranged on the side of the low-voltage room close to the transformer room. A communication area, a power supply area, a power distribution area and an interface area are sequentially arranged in the communication power cabinet in the third direction. The auxiliary transformer is arranged on the side of the low-voltage room far from the transformer room.

[0012] As a preferred solution of the present utility model, an insulating cushion block is installed on the top of the step-up transformer. One end of a fixed cross beam is connected to the insulating cushion block and the other end is connected to a fixed bent plate. The fixed bent plate is connected to the keel of the step-up cabin.

[0013] As a preferred embodiment of the present utility model, the step-up transformer is flexibly connected to the high-voltage switch. The step-up transformer is electrically connected to the converter through a second wire and a first wire. The first wire is arranged outside the step-up cabin. A grounding stake is provided on the outdoor platform, and the first wire is connected to the grounding stake.

[0014] As a preferred embodiment of the present utility model, an axial flow fan and an air inlet louver are respectively arranged on the first side and the second side of the step-up cabin corresponding to both sides of the transformer chamber. The air inlet area of the air inlet louver is larger than the air outlet area of the axial flow fan. Ventilation holes are provided on the bottom plate of the step-up cabin.

[0015] As a preferred embodiment of the present utility model, a grounding copper bar is arranged on the inner bottom plate of the step-up cabin. The grounding copper bar is used to connect the grounding points of all equipment in the high-voltage chamber, low-voltage chamber, transformer chamber and converter. The end of the grounding copper bar is connected to the outdoor grounding point.

[0016] As a preferred embodiment of the present utility model, a first microswitch and a second microswitch are arranged inside the cabin door of the step-up cabin. The first microswitch is connected to the communication power cabinet and is used to feedback the opening and closing state of the cabin door to the measurement and control device in the communication power cabinet. The second microswitch is connected to the indoor lighting lamp and is used to associate the opening and closing state of the cabin door with the indoor lighting lamp.

[0017] As a preferred embodiment of the present utility model, a fire extinguisher box is arranged outside the step-up cabin.

[0018] Compared with the prior art, the present utility model has the following positive effects:

[0019] The modular energy storage current conversion boosting equipment provided by the utility model includes: a boosting cabin and a converter, the bottom plate of the boosting cabin extends from the inside of the boosting cabin to the outside of the boosting cabin along a first direction and forms an outdoor platform on one side of the boosting cabin, the converter is arranged on the outdoor platform, and the converter and the boosting cabin are electrically connected through a first wire; wherein, the boosting cabin is divided into a transformer room, a high-voltage room and a low-voltage room by a partition, the transformer room is arranged on the side of the boosting cabin close to the transformer room, and the high-voltage room and the low-voltage room are arranged side by side on the side of the boosting cabin away from the transformer room. The modular energy storage current conversion boosting equipment in the utility model adopts a modular design idea distinguished by functional units, unifies the design of conversion, boosting, control, measurement, communication, fire protection, and switch equipment, and comprehensively arranges them on the same standard size boosting cabin platform, places the converter on the platform outside the cabin, and the remaining equipment is built in the boosting cabin, which has a good heat dissipation effect, avoids accidents caused by untimely heat dissipation due to indoor arrangement, and reduces the energy consumption required for the equipment heat dissipation equipment. It realizes standardized design, standardized process, and integrated production, thereby improving production efficiency, saving production costs, improving product quality, and greatly reducing on-site workload, which has high economic and social benefits in the construction of energy storage power stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the external structure of the modular energy storage current conversion and boosting device of the utility model;

[0022] Figure 2 It is a schematic diagram of the internal structure of the modular energy storage current conversion and boosting device of the utility model;

[0023] Figure 3 It is an internal top view of the modular energy storage current conversion and boosting device of the utility model;

[0024] Figure 4 It is a side view of the step-up transformer fixing of the modular energy storage current conversion and step-up device of the utility model;

[0025] Figure 5 This is a front view of the modular energy storage current conversion and boosting device of the utility model;

[0026] Figure 6 It is a rear view of the modular energy storage current conversion and boosting device of the utility model;

[0027] Figure 7 This is the left view of the modular energy storage converter and booster equipment of the present utility model.

[0028] In the figure: 1. Booster cabin; 101. Booster transformer; 102. Communication power cabinet; 103. Auxiliary transformer; 104. High-voltage insulator; 105. Lightning arrester counter; 106. Grounding copper bar; 107. High-voltage switch; 108. Laminated copper foil; 109. Metal cable trough box; 110. Second wire; 111. Grounding pile; 112. Insulating pad; 113. Fixed bending plate; 114. Fixed cross beam; 115. Partition board; 116. Transformer room; 117. High-voltage room; 118. Low-voltage room; 119. Cabin door; 120. Mesh door; 121. First side; 122. Second side; 11. Inlet air louvers; 12. Outdoor grounding point; 13. Suspension bar; 14. Axial flow fan; 15. Low-voltage room fan; 16. Fire extinguisher box; 2. Converter; 3. First wire; 4. Outdoor platform. Specific embodiments

[0029] In the description of the present utility model, it should be noted that unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] The following further details the specific embodiments of the present utility model in conjunction with the drawings.

[0032] The applicant has noticed that in existing energy storage cabins, the battery stack, bidirectional converter, step-up transformer, and high-voltage switchgear are integrally installed in the same cabin. Since the converter generates a large amount of heat, integrating the converter and other electrical components in the same energy storage cabin is not conducive to the heat dissipation of the converter on the one hand, and on the other hand, the heat dissipation of the converter is likely to affect other electrical components, affecting the operating efficiency and safety of each device in the energy storage cabin.

[0033] In view of this, in combination with Figures 1 - 7 , this embodiment provides a modular energy storage converter and step-up device, aiming to overcome at least one of the above technical problems.

[0034] In the following embodiments, the first direction x, the second direction y, and the third direction z that intersect pairwise are introduced, where the first direction x is parallel to the length direction of the modular energy storage converter and step-up device, the second direction y is parallel to the width direction of the modular energy storage converter and step-up device, and the third direction z is parallel to the height direction of the modular energy storage converter and step-up device.

[0035] A modular energy storage converter and step-up device provided in this embodiment, as Figures 1 - 7 shown, has a first direction and includes: a step-up cabin 1 and a converter 2. Among them, the bottom plate of the step-up cabin 1 extends from the inside of the step-up cabin 1 to the outside of the step-up cabin 1 along the first direction and forms an outdoor platform 4 on one side of the step-up cabin 1. The converter 2 is arranged on the outdoor platform 4, and the converter 2 is electrically connected to the step-up cabin 1 through a first wire 3. The converter 2 is arranged on the outdoor platform, separated from the step-up cabin 1, and there is no obstruction around the converter 2, having a good heat dissipation effect, avoiding accidents caused by untimely heat dissipation due to indoor layout, and at the same time reducing the energy consumption required for the equipment heat dissipation device.

[0036] Among them, the inside of the step-up cabin 1 is separated by a partition 115 to form a transformer room 116, a high-voltage room 117, and a low-voltage room 118, and the transformer room 116, the high-voltage room 117, and the low-voltage room 118 are independent of each other. The transformer room 116 is arranged on one side of the step-up cabin 1 close to the transformer room 116, and the high-voltage room 117 and the low-voltage room 118 are arranged in parallel on the side of the step-up cabin 1 far from the transformer room 116. The step-up cabin 1 integrates the transformer room 116, the high-voltage room 117, and the low-voltage room 118 in the same cabin, which is convenient for integrated management and reduces the occupied area.

[0037] It should be noted that the top of the step-up cabin 1 is connected by concave-convex joints and fixed to the wall with 4 groups of bolts. The top can be removed, and the equipment in the cabin can be lifted and transported into the cabin from above, and then the cabin top is installed, so as to facilitate the assembly of the step-up cabin 1.

[0038] In the modular energy storage converter and booster equipment of this embodiment, the converter 2 with a relatively large amount of heat dissipation is arranged on the outdoor platform 4, the transformer chamber 116, the high-voltage chamber 117 and the low-voltage chamber 118 are integrated in the booster cabin 1, and the bottom plate of the booster cabin 1 is connected to the outdoor platform 4. Preferably, the bottom plate of the booster cabin 1 and the outdoor platform 4 are of an integral structure, so that the converter 2, the transformer chamber 116, the high-voltage chamber 117 and the low-voltage chamber 118 are integrated into a modular device. During use, the modular energy storage converter and booster equipment can be transported to the installation site as a whole for installation, thereby reducing the floor area, reducing the on-site construction workload, and shortening the construction period.

[0039] The beneficial effects of adopting the modular energy storage converter and booster equipment of this embodiment are as follows: The design and production method of the modular energy storage converter and booster equipment is proposed. With the modular concept, the complete converter and booster equipment can be decomposed into multiple modular units, thus simplifying the design process, reducing the design workload and design cycle, improving the universality and standardization degree of parts, further enhancing the production efficiency, shortening the production cycle, and greatly accelerating the response speed of the manufacturer. At the same time, all equipment is installed on the same prefabricated cabin, which can meet in-plant prefabricated production, overall wiring test and joint debugging, reduce the on-site construction workload, and improve the process and quality of the overall product.

[0040] In some embodiments, a step-up transformer 101 is arranged in the transformer chamber 116, and a metal cable trough box 109 for shielding the interference of high voltage on control cables and communication cables is arranged around the step-up transformer 101. Control and communication cables are arranged in the metal cable trough box 109, and can be arranged on the bottom plate of the transformer chamber 116. The metal cable trough box 109 has good heat insulation performance, waterproof performance, is not flame-retardant and does not explode, has high mechanical strength, is relatively light in weight, and the cable trough box has good fireproof performance, is safe and reliable, and can effectively separate the flames in case of cable fire, and is an ideal material for effectively preventing cable fires.

[0041] As Figure 2 and Figure 3 shown, the booster cabin 1 has corresponding first side 121 and second side 122 in the second direction y. Cabin doors 119 are respectively arranged on the first side 121 and the second side 122 corresponding to both sides of the step-up transformer 101. A 1.8-meter-high mesh door 120 is installed inside the cabin door 119. An electromagnetic lock and a microswitch for preventing personnel from electric shock are installed on the mesh door, and the microswitch is electrically connected to the electromagnetic lock. When both the high-voltage and low-voltage sides of the step-up transformer 101 are energized, the electromagnetic lock will lock the mesh door to prevent it from being opened; when the mesh door is actively opened, the microswitch will be triggered, so that the switches on both the high-voltage and low-voltage sides of the step-up transformer 101 will trip and cut off the power, thereby avoiding personnel electric shock in both directions and improving the safety performance.

[0042] In some embodiments, a high-voltage switch 107, a high-voltage insulator 104, and a plurality of arrester counters 105 are disposed in the high-voltage chamber 117. The high-voltage switch 107 includes a high-voltage circuit breaker, a high-voltage current transformer, a high-voltage disconnecting switch, a high-voltage earthing switch, and a high-voltage arrester. The high-voltage switch 107 is a five-in-one high-voltage switch.

[0043] The high-voltage insulator 104 is disposed on a side of the high-voltage chamber 117 away from the transformer chamber 116. The plurality of arrester counters 105 are arranged in the third direction and are located on a side of the high-voltage chamber 117 away from the low-voltage chamber 118. The arrester counters 105 are vertically arranged in the left threshold, avoiding the potential hazard of tripping during personnel maintenance when arranged horizontally. Among them, the high-voltage insulator 104 is made of glass or ceramic, used to support and fix the busbar and the live conductor, and ensure sufficient distance and insulation between the live conductors or between the conductor and the ground. The arrester counter 105 is a device used to record the number of lightning strikes of the AC non-gap metal oxide arrester, providing an important basis for the power system staff to conduct targeted inspections on the arrester.

[0044] In some embodiments, a communication power cabinet 102 and an auxiliary transformer 103 are disposed in the low-voltage chamber 118. The communication power cabinet 102 is disposed on a side of the low-voltage chamber 118 close to the transformer chamber 116. In the communication power cabinet 102, a communication area, a power supply area, a power distribution area, and an interface area are sequentially arranged in the third direction z. Among them, the first layer inside the communication power cabinet 102 is the communication area, where a data network switch and a control network switch are installed; the second layer is the power supply area, where an uninterruptible power supply and a backup battery are installed; the third layer is the power distribution area, where various power distribution and power switches are installed; the fourth layer is the interface area, where various terminals and connectors for external connection are installed. The hierarchical design is more conducive to using the longitudinal space, making the space layout more compact and reducing the occupied area on the xy plane.

[0045] The auxiliary transformer 103 is disposed on a side of the low-voltage chamber 118 away from the transformer chamber 116. The auxiliary transformer 103 is responsible for providing power to the internal and external devices of the modular energy storage converter and booster equipment, and a 1.8-meter-high mesh door is installed on the outside to prevent personnel from electric shock.

[0046] In some embodiments, as Figure 4 shown, an insulating cushion block 112 is installed on the top of the step-up transformer 101. One end of the fixed crossbeam 114 is connected to the insulating cushion block 112 and the other end is connected to the fixed bending plate 113. The fixed bending plate 113 is connected to the keel of the step-up cabin 1, thereby fixing the top of the step-up transformer 101 and avoiding the shaking of the step-up transformer 101 caused by turning, accelerating, braking, etc. during long-distance transportation, resulting in transformer damage.

[0047] It should be noted that the fixed bent plate 113 and the keel of the boost cabin 1 can be connected by welding or bolt connection. The fixed crossbeam can be made of steel, which has good strength. The boost transformer 101 and the boost cabin 1 are insulated by the insulating pad 112, so that the boost transformer 101 always maintains single-point grounding, and the insulating pad 112 and the fixed crossbeam 114 do not need to be removed during equipment operation, reducing the on-site handover workload.

[0048] In some embodiments, the boost transformer 101 is flexibly connected to the high-voltage switch 107. The boost transformer 101 is electrically connected to the converter 2 through the second wire 110 and the first wire 3. The first wire 3 is arranged outside the boost cabin 1. Among them, the boost transformer 101 and the high-voltage switch 107 are soft-connected through the laminated copper foil 108; the first wire 3 is connected by a busbar bridge, and the second wire 110 is a copper busbar, which has high mechanical properties, good electrical conductivity and thermal conductivity, excellent corrosion resistance, electroplating property and brazing property. A grounding pile 111 is arranged on the outdoor platform 4, and the first wire 3 is connected to the grounding pile 111 for the grounding of the shell of the busbar bridge connection, to avoid electric shock to maintenance personnel in case of a leakage fault.

[0049] In some embodiments, axial fans 14 and air inlet louvers 11 are respectively arranged on both sides of the transformer chamber 116 on the first side 121 and the second side 122 of the boost cabin 1, so as to form a one-way air duct inside the transformer chamber 116, which is more conducive to the discharge of the heat of the transformer. The air inlet area of the air inlet louver 11 is larger than the air outlet area of the axial fan 14. Preferably, the ventilation area of the air inlet louver 11 is 1.1 times the air outlet area of the axial fan 14. The larger air inlet area can reduce the static wind pressure and increase the ventilation flow rate.

[0050] It should be noted that two opposite cabin doors 119 are respectively arranged on the first side 121 and the second side 122. One pair of cabin doors faces the transformer chamber 116, and the other pair of cabin doors faces the high-voltage chamber 117 and the low-voltage chamber 118. The axial fans 14 and the air inlet louvers 11 are respectively arranged on the cabin doors 119 on both sides of the transformer chamber 116. A low-voltage chamber fan 15 is arranged on the side of the low-voltage chamber 118, and a heat dissipation louver is arranged on the corresponding cabin door of the low-voltage chamber 118 to ventilate and dissipate heat from the low-voltage chamber 118. Lifting bars 13 are respectively arranged on both sides of the bottom plate of the boost cabin. When the boost cabin is moved, the boost cabin is lifted and moved by connecting the lifting rope to the lifting bars 13. Ventilation holes are arranged on the bottom plate of the boost cabin 1, so that the cold air at the bottom of the equipment can enter the cabin under the action of the fan of the boost transformer 101 itself to cool the transformer, which is more conducive to the heat dissipation of the transformer.

[0051] In some embodiments, a grounding copper bar 106 is provided on the inner bottom plate of the step-up cabin 1. The grounding copper bar 106 is used to connect the grounding points of all equipment in the high-voltage chamber 117, low-voltage chamber 118, transformer chamber 116, and converter 2. The end of the grounding copper bar 106 is connected to the outdoor grounding point 12 to ensure grounding continuity.

[0052] In some embodiments, a first micro switch and a second micro switch are provided inside the cabin door 119 of the step-up cabin 1. The first micro switch is connected to the communication power cabinet 102 and is used to feedback the opening and closing state of the cabin door 119 to the measurement and control device in the communication power cabinet 102. The second micro switch is connected to the indoor lighting lamp and is used to associate the opening and closing state of the cabin door 119 with the indoor lighting lamp, achieving the function of turning on the light when the door is opened and turning off the light when the door is closed.

[0053] In some embodiments, a fire extinguisher box 16 is provided on the outside of the step-up cabin 1. Two dry powder fire extinguishers are placed inside the box. In case of a fire, it is convenient to safely access the fire extinguisher without opening the cabin door and taking the fire extinguisher from the inside.

[0054] The modular energy storage converter step-up equipment in this embodiment adopts the method of top insulation fixation to avoid potential structural damage caused by upper shaking during transportation of the step-up transformer. Fire-fighting equipment is externally installed to avoid the personal danger of opening the door in case of a fire. Simplify the design and production workload, shorten the production cycle, improve the process quality, and provide a modular energy storage converter step-up equipment.

[0055] The converter in the modular energy storage converter step-up equipment provided in this embodiment dissipates a large amount of heat during operation. It adopts an outdoor layout to avoid accidents caused by untimely heat dissipation due to indoor layout, and at the same time reduces the energy consumption required for the equipment's heat dissipation equipment. The transformer adjusts the clamping parts, iron core, and winding process to meet the unified external interface dimensions of transformers from 1000 kVA to 4000 kVA, and there will be no difference in external connection due to different specifications. The cabin door on one side of the transformer chamber 116 is designed with a detachable rainproof air inlet with a filtering function, and the cabin door on the other side of the modular energy storage converter step-up equipment is designed with an axial flow fan with a large air volume and long service life for exhaust. The area of the air inlet is 1.1 - 3 times that of the air outlet to improve the air intake efficiency, reduce the wind noise, and make the fan operate at the highest flow rate. The high-voltage switch adjusts the frame width to unify the interfaces of the high-voltage circuit breaker and the high-voltage load switch. The counters of the high-voltage lightning arresters are vertically arranged inside the door frame sealing plate to avoid obstacles to maintenance personnel. The low-voltage switch room is equipped with an isolation auxiliary transformer and a communication power cabinet. The communication power cabinet integrates functions such as power distribution, network communication, data acquisition, and fire protection. The isolation auxiliary transformer is equipped with a protective net door, which can effectively ensure the personal safety of operation and maintenance personnel. The fire extinguisher box is far away from the power components and is hung on the outer wall of the cabin. It is convenient and safe to use without opening the electrical cabin door when taking it.

[0056] In this embodiment, the modular energy storage converter and booster equipment adopts a modular design concept differentiated by functional units. The converter, booster, control, measurement, communication, fire protection, and switch equipment are designed in a unified manner and overall arranged on the same booster cabin platform with a standard size. The converter is placed outside the cabin on the external platform, and the rest of the equipment is placed inside the booster cabin. Standardized design, standardized process, and integrated production are achieved, thereby improving production efficiency, saving production costs, improving product quality, and greatly reducing on-site workload. It has high economic and social benefits in the construction of energy storage power stations.

[0057] The above are only the preferred embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art in this technical field can make several deformations and improvements without departing from the creative concept of the present utility model, and all should be covered within the protection scope of the present utility model.

Claims

1. A modular energy storage current conversion and boosting device, characterized in that: Having a first direction, comprising: A booster cabin (1), wherein the bottom plate of the booster cabin (1) extends from the inside of the booster cabin (1) to the outside of the booster cabin (1) along the first direction and forms an outdoor platform (4) on one side of the booster cabin (1), A converter (2), the converter (2) being arranged on the outdoor platform (4), the converter (2) being electrically connected to the booster cabin (1) via a first wire (3); The booster cabin (1) is divided into a transformer chamber (116), a high-voltage chamber (117) and a low-voltage chamber (118) by a partition (115); the transformer chamber (116) is arranged on a side of the booster cabin (1) close to the transformer chamber (116); and the high-voltage chamber (117) and the low-voltage chamber (118) are arranged side by side on a side of the booster cabin (1) far from the transformer chamber (116).

2. A modular energy storage current conversion and boosting device according to claim 1, characterized in that: A step-up transformer (101) is arranged in the transformer room (116), and a metal cable trough box (109) for shielding the interference of high voltage on control cables and communication cables is arranged around the step-up transformer (101); the step-up cabin (1) has a corresponding first side surface (121) and a second side surface (122) in the second direction, and a cabin door (119) is respectively arranged on the first side surface (121) and the second side surface (122) corresponding to both sides of the step-up transformer (101); an electromagnetic lock and a micro switch for preventing personnel from electric shock are installed on the inner side of the cabin door (119), and the micro switch is electrically connected to the electromagnetic lock.

3. A modular energy storage current conversion and boosting device according to claim 2, characterized in that: A high-voltage switch (107), a high-voltage insulator (104) and a plurality of lightning arrester counters (105) are arranged in the high-voltage chamber (117); the high-voltage switch (107) comprises a high-voltage circuit breaker, a high-voltage current transformer, a high-voltage isolating switch, a high-voltage grounding switch and a high-voltage lightning arrester; the high-voltage insulator (104) is arranged on a side of the high-voltage chamber (117) away from the transformer chamber (116); and the plurality of lightning arrester counters (105) are arranged in a third direction and are located on a side of the high-voltage chamber (117) away from the low-voltage chamber (118).

4. A modular energy storage current conversion and boosting device according to claim 2, characterized in that: A communication power cabinet (102) and an auxiliary transformer (103) are arranged in the low-voltage room (118); the communication power cabinet (102) is arranged on a side of the low-voltage room (118) close to the transformer room (116); a communication area, a power supply area, a power distribution area and an interface area are arranged in sequence in a third direction in the communication power cabinet (102); and the auxiliary transformer (103) is arranged on a side of the low-voltage room (118) away from the transformer room (116).

5. A modular energy storage current conversion and boosting device according to claim 2, characterized in that: An insulating pad (112) is installed on the top of the boost transformer (101), one end of a fixed crossbeam (114) is connected to the insulating pad (112) and the other end is connected to a fixed bent plate (113), and the fixed bent plate (113) is connected to the keel of the boost cabin (1).

6. A modular energy storage current conversion and boosting device according to claim 3, characterized in that: The step-up transformer (101) is flexibly connected to the high-voltage switch (107); the step-up transformer (101) is electrically connected to the converter (2) via a second conductor (110) and a first conductor (3); the first conductor (3) is arranged outside the booster cabin (1); a grounding pile (111) is arranged on the outdoor platform (4); and the first conductor (3) is connected to the grounding pile (111).

7. A modular energy storage current conversion and boosting device according to claim 2, characterized in that: An axial flow fan (14) and an air inlet louver (11) are respectively arranged on the first side surface (121) and the second side surface (122) of the booster cabin (1) on both sides corresponding to the transformer chamber (116); the air inlet area of ​​the air inlet louver (11) is larger than the air outlet area of ​​the axial flow fan (14); and ventilation holes are arranged on the bottom plate of the booster cabin (1).

8. The modular energy storage current conversion and boosting device according to claim 1, characterized in that: A grounding copper bar (106) is arranged on the inner bottom plate of the booster cabin (1), and the grounding copper bar (106) is used to connect the grounding points of all equipment in the high-voltage chamber (117), the low-voltage chamber (118), the transformer chamber (116) and the converter (2), and the end of the grounding copper bar (106) is connected to an outdoor grounding point (12).

9. The modular energy storage current conversion and boosting device according to claim 4, characterized in that: A first micro switch and a second micro switch are arranged inside the door (119) of the booster cabin (1); the first micro switch is connected to the communication power cabinet (102) and is used to feed back the switch state of the door (119) to the measurement and control device in the communication power cabinet (102); the second micro switch is connected to the indoor lighting and is used to associate the switch state of the door (119) with the indoor lighting.

10. The modular energy storage current conversion and boosting device according to claim 1, characterized in that: A fire extinguisher box (16) is arranged outside the booster cabin (1).

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