An integrated bus monitoring and protection integrated bus converter and booster all-in-one machine

Abstract

The application discloses an integrated busbar current conversion and voltage boost all-in-one machine integrated with insulation monitoring and busbar protection, and relates to the technical field of energy storage equipment; the application comprises a cabinet, a cabinet door, a lower door body, an upper door body, a high-voltage chamber, a transformer, a low-voltage chamber and an insulation monitoring module, and a cooling mechanism is arranged in the middle of the cabinet; when the temperature of any point position exceeds a threshold value, the PLC control drives the motor to change the transmission direction through the driving bevel gear and the driven bevel gear, drives the two screw rods to rotate synchronously, drives the sliding frame to drive the two wind covers to accurately ascend and descend to the high-temperature area along the limiting rods, so that the wind covers are located on the two sides of the heating position, the low-temperature airflow cooled through the elbow pipe is uniformly blown to the heating device by the bidirectional axial flow fan on the air inlet side, the air on the air exhaust side is synchronously exhausted outward by the fan to exhaust the hot air, and the air directions of the two fans can be regularly interchanged, so that the partition independent fixed-point reinforced heat dissipation of different positions such as the high-voltage chamber, the transformer and the low-voltage chamber is realized.

Description

Technical Field

[0001] This invention relates to the field of energy storage equipment technology, specifically to an integrated busbar converter and boost converter that integrates insulation monitoring and busbar protection. Background Technology

[0002] In energy storage power stations, the low-voltage DC power output from the energy storage container needs to be boosted and converted into high-voltage AC power before it can be connected to the main grid. The boost converter mainly uses an inverter to convert the DC power generated by the battery into AC power and finally connect it to the grid. It organically combines the functions of transformer step-down and low-voltage power distribution.

[0003] Reference patent document: Patent Publication No. CN221995316U, Patent Publication Date 2024-11-12, relates to a boost converter integrated system, including a chassis body, an electrical component assembly installed inside the chassis body, side holes on both inner walls of the chassis body, cooling components installed inside the side holes, and a cooling component installed in the middle of the cooling components. The electrical component assembly is composed of a battery, two cables, a low-voltage chamber, a transformer, and a high-voltage chamber connected in sequence. By utilizing the cooling components located inside the chassis body on both sides and the cooling components installed inside, the heat generated by the electrical component assembly during operation can be cooled. Integrating boost and converter functions into the same device reduces the equipment footprint, improves the overall integration of the system, simplifies the installation process, makes maintenance more convenient, and the integrated design can reduce manufacturing and installation costs. The tight integration of boost and converter functions can optimize energy conversion efficiency and reduce energy loss.

[0004] Although the aforementioned patent incorporates side cooling and heat dissipation components for the chassis, enabling unified heat dissipation for internal electrical components and integrating boost and converter functions to reduce equipment footprint and optimize energy conversion efficiency, it only uses fixedly arranged cooling fans to achieve unified air cooling for the entire machine. This fails to provide independent, targeted heat dissipation for components with different heat outputs and temperature ranges, such as the low-voltage compartment, transformer, and high-voltage compartment. When the transformer or high-voltage busbar components experience localized overload and overheating, the unified heat dissipation cannot quickly remove the accumulated heat, easily leading to overheating protection shutdowns. Furthermore, the air-cooled airflow lacks a pre-cooling heat exchange structure, relying solely on direct heat exchange with room-temperature air, resulting in limited cooling performance and low heat dissipation efficiency under high-temperature conditions. Summary of the Invention

[0005] To address the problem that existing equipment, although integrating boost converters and featuring unified air cooling, lacks independent zoned heat dissipation and air-cooled pre-cooling structures, resulting in low heat dissipation efficiency under high-temperature conditions, the present invention aims to provide an integrated bus converter boost converter with integrated insulation monitoring and bus protection.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: an integrated bus converter and step-up unit that integrates insulation monitoring and bus protection, comprising a cabinet, a cabinet door, a lower door, an upper door, a high-voltage compartment, a transformer, a low-voltage compartment, and an insulation monitoring module. A cooling mechanism is provided in the middle of the cabinet for dissipating heat and cooling the internally installed electrical equipment. The cooling mechanism includes: The local heat dissipation component includes two fan shrouds installed inside the cabinet. Corrugated pipes are fixedly installed on one side of each fan shroud. Two symmetrically distributed screws are rotatably installed on one side of the cabinet. A drive component is set at the top of the screws. A set of sliding brackets is fixedly installed on one side of each fan shroud. One end of each set of sliding brackets is threaded onto the middle of the screw. Two through slots communicating with the corrugated pipes are opened at the top of the cabinet. A bidirectional axial flow fan with adjustable blade angle is fixedly installed in the middle of each through slot. The liquid cooling heat dissipation component is located at the top of the cabinet and is used to cool the air; The overall heat dissipation assembly is located at the bottom of the cabinet and is used for overall cooling of the equipment.

[0007] Preferably, a cabinet door is hinged to one side of the middle section of the cabinet, a lower door is hinged to one side of the lower section of the cabinet, and an upper door is hinged to one side of the upper section of the cabinet. A high-voltage chamber is installed at the upper part of the cabinet, a transformer is installed in the middle section of the cabinet, and a low-voltage chamber is installed at the lower part of the cabinet. The high-voltage chamber, the transformer, and the low-voltage chamber are connected by cables. An insulation monitoring module is installed on one side of the cabinet, and the sampling end is coupled to the positive line, the negative line, and the grounding terminal of the DC bus side for real-time detection of the insulation parameters of the DC side to ground.

[0008] Preferably, the liquid cooling heat dissipation assembly includes a liquid cooling box fixedly installed on the upper part of the cabinet, a cooling plate fixedly installed on the lower inner surface of the liquid cooling box, multiple intercepting plates used in cooperation fixedly installed on the upper part of the liquid cooling box, two water pumps used in cooperation fixedly installed on the upper part of the cabinet, the input ends of the two water pumps are fixedly installed on the lower side of the liquid cooling box, a bent pipe is fixedly installed on one side of the fan shroud, the input end of the bent pipe is connected to the output end of the water pump, and the output end of the bent pipe is fixedly installed on the upper side of the liquid cooling box.

[0009] Preferably, the overall heat dissipation assembly includes a cooling fan fixedly installed at the bottom of the cabinet, an air inlet dustproof plate detachably installed on one side of the lower door, and two symmetrically distributed air outlet dustproof plates detachably installed at the top of the cabinet.

[0010] Preferably, the drive assembly includes a protective cover fixedly installed on one side of the upper part of the cabinet, a drive motor fixedly installed on one side of the protective cover, two symmetrically distributed active bevel gears rotatably installed on one side of the upper part of the cabinet, the two active bevel gears are connected by a synchronous belt and a synchronous pulley, the two active bevel gears are respectively meshed with the corresponding driven bevel gears, and the drive end of the drive motor is fixedly installed in the middle of one side of one of the active bevel gears.

[0011] Preferably, two symmetrically distributed limit rods are fixedly installed on one side of the cabinet, and the other ends of the two sets of sliding frames are slidably installed on the limit rods through linear bearings.

[0012] Preferably, a dustproof plate is slidably installed on the upper side of the corrugated pipe, and the corrugated pipe is used to intercept incoming dust.

[0013] Preferably, a dispersion plate is fixedly installed on one side of each of the two wind hoods to disperse the ejected gas.

[0014] Beneficial effects Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This application sets up local heat dissipation components, embedding temperature sensors in the high-voltage chamber, transformer, and low-voltage chamber respectively and connecting them to a PLC control module. When the temperature at any point exceeds the threshold, the PLC controls the drive motor to drive the active bevel gear and driven bevel gear to reverse the transmission, driving the screws on both sides to rotate synchronously. The drive sliding frame drives the two fan covers to move up and down precisely along the limit rod to the high-temperature area, so that the fan covers are located on both sides of the heat-generating parts. The bidirectional axial flow fan on the air inlet side blows the low-temperature airflow cooled by the bend pipe evenly to the heat-generating device, and the fan on the air outlet side exhausts the hot air outward synchronously. The airflow direction of the two fans can be interchanged periodically, realizing zoned independent fixed-point enhanced heat dissipation for different parts such as the high-voltage chamber, transformer, and low-voltage chamber. This effectively solves the defect of traditional all-in-one machines that can only dissipate heat as a whole and cannot cool down individually, avoids the hidden danger of local overheating, and significantly improves the targeted heat dissipation and equipment operation reliability. 2. This application, by setting up a liquid cooling heat dissipation component, when the PLC control module starts local enhanced heat dissipation, simultaneously controls the water pump on the air inlet side to start, delivering the low-temperature coolant cooled by the cooling plate in the liquid cooling box to the layered bend pipe. When the airflow passes through the bend pipe, it fully contacts the low-temperature pipe wall for heat exchange, quickly reducing the air temperature before being sent by the fan into the air shroud to blow onto the heat-generating device. After flowing through the bend pipe, the coolant flows back from the top of the liquid cooling box, and is guided by the staggered interceptor plates to flow back in a Z-shape, greatly extending the heat exchange residence time between the coolant and the cooling plate to ensure sufficient cooling. Meanwhile, the corresponding water pump on the exhaust side remains off to reduce the overall heat dissipation energy consumption, achieving a balance between precise cooling and energy-saving operation during local enhanced heat dissipation. 3. This application, by setting up an overall heat dissipation component, ensures that during normal operation, only the bottom cooling fan continuously pushes cool air upwards. Outside ambient air, after being filtered and dust-removed by the removable dust inlet panel at the lower door, flows from the bottom cavity of the cabinet upwards through the low-voltage chamber, the middle transformer, and the upper high-voltage chamber, continuously carrying away the heat generated during normal operation of each cavity. The hot air carrying heat is then exhausted through the exhaust dust inlet panel. Normal heat dissipation of the entire unit is achieved through vertical air convection, eliminating the need to activate liquid cooling and lifting drive components, effectively reducing daily operating energy consumption. Furthermore, the removable dust inlet and exhaust panels facilitate regular cleaning and maintenance. The system automatically switches between normal convection cooling and localized enhanced cooling modes based on temperature feedback, achieving optimized matching of heat dissipation efficiency and energy consumption under all operating conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the cooling mechanism of the present invention.

[0017] Figure 3 This is a schematic cross-sectional view of the present invention.

[0018] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0019] Figure 5 This is a schematic diagram of the partial heat dissipation component structure of the present invention.

[0020] Figure 6 This is a schematic cross-sectional view of the liquid cooling box structure of the present invention.

[0021] In the diagram: 1. Cabinet; 11. Cabinet door; 12. Lower door; 13. Upper door; 14. High-voltage compartment; 15. Transformer; 16. Low-voltage compartment; 17. Insulation monitoring module; 2. Cooling mechanism; 21. Local heat dissipation assembly; 211. Protective cover; 2111. Drive motor; 2112. Drive bevel gear; 212. Screw; 2121. Driven bevel gear; 213. Limiting rod; 2131. Sliding frame; 214. Fan cover; 2141. Corrugated pipe; 2142. No. 1 dustproof plate; 215. Dispersion plate; 216. Adjustable blade angle bidirectional axial flow fan; 22. Liquid cooling heat dissipation assembly; 221. Liquid cooling box; 222. Interception plate; 223. Cooling plate; 224. Water pump; 225. Bend; 23. Overall heat dissipation assembly; 231. Cooling fan; 232. Inlet dustproof plate; 233. Outlet dustproof plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example: Figure 1-6 As shown, this invention provides an integrated bus converter and step-up unit that integrates insulation monitoring and bus protection. It includes a cabinet 1, a cabinet door 11, a lower door 12, an upper door 13, a high-voltage compartment 14, a transformer 15, a low-voltage compartment 16, and an insulation monitoring module 17. The cabinet 1 is a vertical rectangular sheet metal cabinet, internally divided into upper, middle, and lower compartments by sheet metal partitions. The lower cavity has a reserved space for energy storage battery installation. Temperature sensors are embedded in the side walls of the high-voltage compartment 14, the transformer 15 housing, and the busbars of the low-voltage compartment 16 inside the cabinet 1. All temperature sensors are connected in parallel using shielded signal cables. The PLC control module outputs switch control lines to drive motor 2111, two bidirectional axial flow fans 216 with adjustable blade angles, and two water pumps 224. When the temperature sensor at any point collects a temperature exceeding a set threshold, the PLC automatically outputs a conduction signal, triggering the drive assembly to raise and lower the fan shroud 214 to the high-temperature area. Simultaneously, the bidirectional fans and the corresponding water pumps 224 are activated, automatically executing a localized, targeted enhanced heat dissipation process. A cooling mechanism 2 is located in the middle of the cabinet 1 to dissipate heat and cool the internal electrical equipment. The cooling mechanism 2 includes: The local heat dissipation component 21 includes two fan shrouds 214 installed inside the cabinet 1. A corrugated pipe 2141 is fixedly installed on one side of each fan shroud 214. The corrugated pipe 2141 is a multi-layered corrugated rubber telescopic corrugated pipe that can vertically rise and fall synchronously with the fan shroud 214, maintaining a sealed air duct throughout the process and preventing crosstalk between hot and cold airflows. Two symmetrically distributed screws 212 are rotatably installed on one side of the cabinet 1. A drive assembly is provided at the top of each screw 212. The fan shrouds 214 are fixedly installed on one side of each fan shroud 214. A set of sliding brackets 2131 is provided, and one end of each set of sliding brackets 2131 is threadedly installed in the middle of the screw 212. The top of the cabinet 1 has two through slots that communicate with the corrugated pipe 2141. An adjustable blade angle bidirectional axial flow fan 216 is fixedly installed in the middle of each through slot. The fan is an electronically controlled variable pitch bidirectional axial flow fan. The fan has a built-in 42BYGH40 stepper variable pitch motor. The fan blade angle can be synchronously rotated by PLC electronic control. With the forward and reverse rotation of the motor, bidirectional equal air volume suction and blowing can be achieved. The liquid cooling heat dissipation component 22 is installed at the top of the cabinet 1 and is used to cool the air; The overall heat dissipation component 23 is located at the bottom of the cabinet 1 and is used for overall cooling of the equipment.

[0024] A cabinet door 11 is hinged to one side of the middle section of cabinet 1. A lower door 12 is hinged to one side of the lower section of cabinet 1. After opening the lower door 12, the bottom cooling fan 231 can be directly inspected and the air intake dustproof plate 232 can be disassembled and cleaned. An upper door 13 is hinged to one side of the upper section of cabinet 1, corresponding to the position of the liquid cooling box 221. After opening, the top blade angle adjustable bidirectional axial flow fan 216 and the water pump 224 can be directly inspected and repaired. A high-pressure chamber 14 is installed at the upper part of the interior of cabinet 1, and a high-pressure chamber 14 is installed at the middle section of cabinet 1. Transformer 15 and a low-voltage chamber 16 are installed at the lower end of the cabinet 1. The high-voltage chamber 14, transformer 15 and low-voltage chamber 16 are connected by cables. An insulation monitoring module 17 is installed on one side of the cabinet 1, and the sampling end is coupled to the positive line, negative line and grounding terminal of the DC bus side. It is used to detect the insulation parameters of the DC side to ground in real time. When the insulation resistance is lower than the safety threshold, a switch alarm signal is output to the PLC control module to cut off the bus protection circuit and ensure the safe operation of the equipment on the DC side.

[0025] The liquid cooling heat dissipation assembly 22 includes a liquid cooling box 221 fixedly installed on the upper part of the cabinet 1. A cooling plate 223 is fixedly installed on the lower surface of the liquid cooling box 221. Multiple intercepting plates 222 that work together are fixedly installed on the upper part of the liquid cooling box 221. The intercepting plates 222 are arranged in an alternating vertical arrangement, so that the coolant flows in a zigzag pattern inside the liquid cooling box 221, prolonging the heat exchange residence time between the coolant and the cooling plate 223, and ensuring that the coolant is fully cooled. Two water pumps 224 that work together are fixedly installed on the upper part of the cabinet 1. The input ends of the two water pumps 224 are fixedly installed on the lower side of the liquid cooling box 221. A bend 225 is fixedly installed on one side of the fan shroud 214. The input end of pipe 225 is connected to the output end of water pump 224. The output end of bend 225 is fixedly installed on the upper side of liquid cooling box 221. Specifically, during operation, water pump 224 delivers low-temperature coolant in liquid cooling box 221 to heat exchange bend 225. The airflow in the duct fully contacts the low-temperature pipe wall for heat exchange, rapidly reducing the airflow temperature. The layered bend 225 structure greatly increases the contact area between air and low-temperature medium. When the blade angle adjustable bidirectional axial flow fan 216 switches between suction and blowing directions, the PLC synchronously switches the start and stop states of water pumps 224 on both sides to ensure that the air inlet side duct always has low-temperature cooling airflow, and the suction side water pump 224 stops to reduce the overall heat dissipation energy consumption.

[0026] The overall heat dissipation assembly 23 includes a cooling fan 231 fixedly installed at the bottom of the cabinet 1. The fan is vertically arranged facing upwards and pushes the cool air from the bottom upwards. An air inlet dustproof plate 232 is detachably installed on one side of the lower door 12. Two symmetrically distributed air outlet dustproof plates 233 are detachably installed at the top of the cabinet 1. The air inlet dustproof plate 232 and the air outlet dustproof plate 233 can filter dust from the ambient temperature air entering the cabinet 1. Specifically, during normal whole-machine heat dissipation operation, only the bottom cooling fan 231 runs continuously. After the ambient temperature air is filtered and dust-removed by the air inlet dustproof plate 232 of the lower door 12, it passes through the low-pressure chamber 16, the middle transformer 15, and the upper high-pressure chamber 14 from bottom to top of the bottom cavity of the cabinet 1, continuously carrying away the heat of normal operation of the cavity. The hot air carrying heat continues to flow upwards and is discharged outwards through the air outlet dustproof plate 233. The normal heat dissipation of the whole machine is completed by relying on vertical convection.

[0027] The drive assembly includes a protective cover 211 fixedly mounted on one side of the upper part of the cabinet 1. A drive motor 2111 is fixedly mounted on one side of the protective cover 211. Two symmetrically distributed drive bevel gears 2112 are rotatably mounted on the upper side of the cabinet 1. The two drive bevel gears 2112 are connected by a synchronous belt and a synchronous pulley. The two drive bevel gears 2112 are respectively meshed with corresponding driven bevel gears 2121. The drive end of the drive motor 2111 is fixedly mounted on the middle of one side of one of the drive bevel gears 2112. Specifically, when the drive motor 2111 starts, the motor power is reversed by 90° via the bevel gear, converting the horizontal rotational power into the vertical rotational power of the screw 212. When the screw 212 rotates, it drives the sliding frame 2131 to move up and down along the screw 212, and simultaneously drives the two fan covers 214 to rise and fall vertically as a whole. According to the height of the heat point fed back by the temperature sensor, the fan cover 214 can be precisely adjusted to cover the corresponding heat-generating areas of the high-voltage chamber 14 and the transformer 15, so as to achieve localized heat dissipation and solve the defect of not being able to cool the area separately.

[0028] Two symmetrically distributed limit rods 213 are fixedly installed on one side of the cabinet 1. The other ends of the two sets of sliding brackets 2131 are slidably installed on the limit rods 213 through linear bearings. The limit rods 213 can provide guidance for the lifting and lowering of the fan cover 214, making its up-and-down movement more stable.

[0029] A first dustproof plate 2142 is slidably installed on the upper side of the corrugated pipe 2141. The corrugated pipe 2141 is used to intercept incoming dust. The first dustproof plate 2142 is made of multiple layers of stainless steel metal filter screen. With the airflow switching function of the adjustable blade angle bidirectional axial flow fan 216, when the fan changes direction, the reverse airflow can wash away the dust accumulated on the surface of the first dustproof plate 2142, realizing the self-cleaning of the filter screen and greatly reducing the frequency of manual disassembly and cleaning.

[0030] A dispersion plate 215 is fixedly installed on one side of each of the two fan covers 214 to disperse the ejected gas. The setting of the dispersion plate 215 can avoid the local temperature difference caused by direct blowing at a single point, so that the low temperature airflow can evenly cover the surface of the heat-generating device and improve the overall heat dissipation uniformity.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0032] During operation, the integrated converter booster unit's working process includes a normal overall heat dissipation mode and a localized enhanced heat dissipation mode. The two modes are automatically switched by the PLC control module based on temperature sensor feedback. Under normal conditions, the equipment only activates the overall heat dissipation component 23. The bottom cooling fan 231 continuously pushes cold air upwards. The ambient temperature air is filtered by the air inlet dustproof plate 232 at the lower door 12 and passes through the low-pressure chamber 16, transformer 15 and high-pressure chamber 14 from bottom to top, continuously carrying away the heat generated during normal operation of each chamber. The hot air is finally discharged to the outside through the air outlet dustproof plate 233, and the normal heat dissipation of the whole machine is completed by relying on longitudinal air convection. When any temperature sensor embedded in the side wall of the high-voltage chamber 14, the housing of the transformer 15, and the busbar of the low-voltage chamber 16 detects that the local temperature exceeds the preset threshold of the PLC, the PLC control module automatically outputs a conduction signal to start the drive component in conjunction with the PLC. When the drive motor 2111 starts, it drives the two screws 212 to rotate synchronously through the 90° reversal transmission of the active bevel gear 2112 and the driven bevel gear 2121. This drives the sliding frame 2131 to move the two fan covers 214 vertically up and down along the limit rod 213 to the high temperature area, so that the fan covers 214 can accurately cover the heat-generating parts and achieve localized heat dissipation. At the same time, the PLC controls the adjustable bidirectional axial flow fan 216 on the corresponding side to draw air into the bellows 2141 according to the location of the heating point. The low-temperature airflow in the shroud 214 is evenly blown onto the surface of the heating device through the dispersion plate 215. Meanwhile, the adjustable bidirectional axial flow fan 216 on the other side exhausts air outward, creating a negative pressure in the shroud 214 on that side, which quickly removes the hot air. The airflow direction of the two fans can be swapped periodically to change the direction of air intake and exhaust, avoiding dust accumulation or uneven heat dissipation on one side due to long-term operation in a single direction. While local heat dissipation is started, the PLC control module simultaneously controls the water pump 224 on the air inlet side to start, and delivers the low-temperature coolant in the liquid cooling box 221, which has been cooled by the cooling plate 223, to the bend 225. When the airflow in the air duct passes through the bend 225, it fully exchanges heat with the low-temperature pipe wall to achieve forced cooling, which greatly reduces the temperature of the air blown towards the heat-generating device. Meanwhile, the water pump 224 on the exhaust side remains off to reduce the overall heat dissipation energy consumption. After flowing through the bend 225, the coolant flows back into the liquid cooling tank 221 from the top and then flows back into the tank through the staggered interceptor plates 222 to form a Z-shaped backflow, which prolongs the heat exchange residence time between the coolant and the cooling plate 223 and ensures that the coolant is fully cooled before being recycled. The corrugated pipe 2141 rises and falls synchronously with the air cover 214, ensuring that the air duct is sealed and leak-free throughout. The first dustproof plate 2142 intercepts dust and impurities when drawing air, and when the fan reverses direction, the reverse airflow washes the surface of the filter screen, realizing the self-cleaning of the metal filter screen.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated bus converter and step-up transformer with integrated insulation monitoring and bus protection, comprising a cabinet (1), a cabinet door (11), a lower door (12), an upper door (13), a high-voltage compartment (14), a transformer (15), a low-voltage compartment (16), and an insulation monitoring module (17), characterized in that: A cooling mechanism (2) is provided in the middle of the cabinet (1) for dissipating heat and cooling the electrical equipment installed inside. The cooling mechanism (2) includes: The local heat dissipation assembly (21) includes two fan shrouds (214) disposed inside the cabinet (1). A corrugated pipe (2141) is fixedly installed on one side of each of the two fan shrouds (214). Two symmetrically distributed screws (212) are rotatably installed on one side of the cabinet (1). A drive assembly is provided at the top of each screw (212). A set of sliding brackets (2131) is fixedly installed on one side of each fan shroud (214). One end of each set of sliding brackets (2131) is threaded onto the middle of the screw (212). Two through slots communicating with the corrugated pipes (2141) are opened at the top of the cabinet (1). A bidirectional axial flow fan (216) with adjustable blade angle is fixedly installed in the middle of each through slot. A liquid cooling heat dissipation component (22) is installed on the upper part of the cabinet (1) and is used to cool the air; The overall heat dissipation component (23) is located at the bottom of the cabinet (1) and is used for overall cooling of the equipment.

2. The integrated bus converter and step-up unit with integrated insulation monitoring and bus protection as described in claim 1, characterized in that, A cabinet door (11) is hinged to one side of the middle part of the cabinet (1), a lower door (12) is hinged to one side of the lower part of the cabinet (1), an upper door (13) is hinged to one side of the upper part of the cabinet (1), a high-voltage chamber (14) is installed inside the upper part of the cabinet (1), a transformer (15) is installed in the middle part of the cabinet (1), and a low-voltage chamber (16) is installed at the lower part of the cabinet (1). The high-voltage chamber (14), the transformer (15) and the low-voltage chamber (16) are connected by cables. An insulation monitoring module (17) is installed inside the cabinet (1), and the sampling end is coupled to the positive line, the negative line and the grounding end of the DC bus side for real-time detection of the insulation parameters of the DC side to ground.

3. The integrated bus converter and step-up unit with integrated insulation monitoring and bus protection as described in claim 1, characterized in that, The liquid cooling heat dissipation assembly (22) includes a liquid cooling box (221) fixedly installed on the upper part of the cabinet (1). A cooling plate (223) is fixedly installed on the lower inner surface of the liquid cooling box (221). Multiple intercepting plates (222) that cooperate with each other are fixedly installed on the upper part of the liquid cooling box (221). Two water pumps (224) that cooperate with each other are fixedly installed on the upper part of the cabinet (1). The input ends of the two water pumps (224) are fixedly installed on the lower side of the liquid cooling box (221). A bend (225) is fixedly installed on one side of the fan cover (214). The input end of the bend (225) is connected to the output end of the water pump (224). The output end of the bend (225) is fixedly installed on the upper side of the liquid cooling box (221).

4. The integrated bus converter and step-up unit with integrated insulation monitoring and bus protection as described in claim 1, characterized in that, The overall heat dissipation assembly (23) includes a heat dissipation fan (231) fixedly installed at the bottom of the cabinet (1), an air inlet dustproof plate (232) is detachably installed on one side of the lower door (12), and two symmetrically distributed air outlet dustproof plates (233) are detachably installed at the top of the cabinet (1).

5. The integrated bus converter and step-up unit with integrated insulation monitoring and bus protection as described in claim 1, characterized in that, The drive assembly includes a protective cover (211) fixedly installed on one side of the upper part of the cabinet (1). A drive motor (2111) is fixedly installed on one side of the protective cover (211). Two symmetrically distributed active bevel gears (2112) are rotatably installed on one side of the upper part of the cabinet (1). The two active bevel gears (2112) are connected by a synchronous belt and a synchronous pulley. The two active bevel gears (2112) are respectively meshed with the corresponding driven bevel gears (2121). The drive end of the drive motor (2111) is fixedly installed in the middle of one side of one of the active bevel gears (2112).

6. The integrated bus converter and step-up unit with integrated insulation monitoring and bus protection as described in claim 1, characterized in that, Two symmetrically distributed limit rods (213) are fixedly installed on one side of the cabinet (1), and the other ends of the two sets of sliding frames (2131) are slidably installed on the limit rods (213) through linear bearings.

7. The integrated bus converter and step-up unit with integrated insulation monitoring and bus protection as described in claim 1, characterized in that, A dustproof plate (2142) is slidably installed on one side of the upper part of the corrugated pipe (2141), and the corrugated pipe (2141) is used to intercept incoming dust.

8. The integrated bus converter and step-up unit with integrated insulation monitoring and bus protection as described in claim 1, characterized in that, A dispersion plate (215) is fixedly installed on one side of each of the two wind shields (214) to disperse the ejected gas.

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