An immersed oil-cooled power module for energy storage converter and booster integrated machine

Abstract

This application relates to an immersion oil-cooled power module for an integrated energy storage converter and boost converter, belonging to the technical field of smart grids. It includes a heat-conducting box with an open top, a module body located inside the heat-conducting box, and a heat-conducting box cover fixed to the top surface of the heat-conducting box. The heat-conducting box contains insulating oil covering the module body. Connecting cables are fixed to the outer surface of the module body, and a wiring port for the connecting cables to pass through is opened on the vertical side of the heat-conducting box cover. Heat dissipation plates are fixed to two opposite vertical sides of the heat-conducting box, and several heat dissipation fins are fixed to the outer surface of the heat dissipation plates. In this application, the insulating oil completely covers the module body, and the heat-conducting box and the box cover form a sealed structure. The wiring port is only for the connecting cables to pass through, effectively preventing dust, sand, and other impurities from entering the interior, avoiding the risk of reduced heat dissipation efficiency and equipment failure caused by impurities adhering to the interior.

Description

Technical Field

[0001] This application relates to the technical field of smart grids, and in particular to an immersion oil-cooled power module for an integrated energy storage converter and boost converter. Background Technology

[0002] The integrated energy storage converter and step-up transformer is a key piece of equipment in the smart grid, also known as an intelligent oil-immersed power transformer integrating photovoltaic, energy storage, and inverter functions. The power modules of the integrated energy storage converter and step-up transformer are functionally divided into three categories. The energy conversion module is integrated into the inverter cabinet, using IGBT / SiC devices as the core, and includes inverter, rectification, and DC / DC conversion modules, responsible for AC / DC conversion and voltage regulation, realizing the energy flow from photovoltaic to energy storage to the grid. The energy storage and protection module is located in the photovoltaic energy storage cabinet, using a BMS as the core, and is equipped with power switch protection and energy storage balancing modules to manage battery charging and discharging, ensuring safety and balancing battery performance. The energy transmission and step-up module works in conjunction with the oil-immersed transformer, including transformer power regulation, grid-connected filtering, and power monitoring and metering modules, regulating voltage, optimizing power quality, and monitoring metering data to adapt to grid connection requirements.

[0003] Existing integrated energy storage converter and booster units use a base as their installation foundation, on which three core units—a photovoltaic energy storage cabinet, an oil-immersed transformer, and an inverter cabinet—are fixed side-by-side. The inverter cabinet houses a built-in energy storage converter (PCS), integrating core components such as an inverter and rectifier, responsible for AC / DC power conversion. The photovoltaic energy storage cabinet, centered on energy storage battery packs (such as lithium battery packs), is equipped with a battery management system, fuses, contactors, and other auxiliary equipment to achieve energy storage and safety management. During operation, the electricity generated by photovoltaic power generation first enters the inverter cabinet for DC-to-AC conversion. Part of this is directly connected to the grid via the transformer, while the other part is rectified back to DC and stored in the energy storage cabinet. When energy needs to be released, the DC output from the energy storage cabinet is inverted back to AC by the inverter cabinet, then boosted by the transformer before being connected to the grid or supplied to the load. To ensure the heat dissipation performance of the power modules inside the inverter and energy storage cabinets, existing inverter and photovoltaic energy storage cabinets are equipped with heat dissipation vents on their inner walls and small cooling fans, forming a basic heat dissipation system. However, in application scenarios with frequent strong winds outdoors, dust, sand, lint, and other impurities from the external environment can enter the cabinet directly through the heat dissipation vents under the influence of wind. Over time, these impurities tend to accumulate and adhere to the surface of the power modules, reducing their heat dissipation efficiency and causing the equipment to overheat, indicating room for improvement. Summary of the Invention

[0004] The purpose of this application is to provide an immersion oil-cooled power module for an integrated energy storage converter and boost converter, which solves the problem in the above-mentioned related technologies where air cooling can cause external dust to enter the cabinet and affect the heat dissipation of the power module.

[0005] The immersion oil-cooled power module for an integrated energy storage converter and boost converter provided in this application adopts the following technical solution: An immersion oil-cooled power module for an integrated energy storage converter and boost converter includes a heat-conducting box with an open top, a module body located inside the heat-conducting box, and a heat-conducting box cover fixed to the top surface of the heat-conducting box. The heat-conducting box contains insulating oil covering the module body. A connecting cable is fixed to the outer side of the module body, and a wiring port for the connecting cable to pass through is opened on the vertical side of the heat-conducting box cover. Heat dissipation plates are fixed to the two opposite vertical sides of the heat-conducting box, and a plurality of heat dissipation fins are fixed to the outer side of the heat dissipation plates.

[0006] By adopting the above technical solution, the insulating oil completely covers the main body of the module, forming a closed-loop heat dissipation system with the heat-conducting box, heat sink, and heat sink fins. This system utilizes the excellent thermal conductivity of the insulating oil to quickly absorb the heat generated by the main body of the module during operation, while the heat sink and fins expand the heat dissipation area, accelerating the dissipation of heat to the outside. The heat dissipation efficiency far exceeds that of traditional air cooling. The heat-conducting box and the box cover form a sealed structure, with the wiring port only allowing the connection cable to pass through. This effectively prevents dust, sand, and other impurities from entering the interior, avoiding the risk of reduced heat dissipation efficiency and equipment failure caused by impurities. It is suitable for outdoor applications with high winds and dust. The overall structure is compact and can be directly integrated into the inverter cabinet or photovoltaic energy storage cabinet of the energy storage converter-boost integrated unit. It has strong compatibility with functional modules such as power conversion, storage protection, etc. While ensuring heat dissipation stability and equipment safety, it simplifies the design of the cabinet heat dissipation system and improves the reliability and service life of the entire unit.

[0007] Optionally, the heat-conducting box has detachable traction handles installed horizontally on its two vertical sides perpendicular to the heat dissipation plate.

[0008] By adopting the above technical solution, the detachable towing handle provides a convenient lifting point for the power module. The horizontal installation method adapts to the side structure of the enclosure and does not interfere with the heat dissipation function of the heat sink and fins. Workers can easily move, install, or maintain the module using the towing handle. The detachable design also allows for disassembly as needed after the module is fixed, avoiding the occupation of extra space and improving flexibility and ease of operation.

[0009] Optionally, a receiving plate is rotatably mounted on the top surface of the traction handle, and the traction handle is slidably mounted on the vertical side of the heat conduction box. The traction handle can be adjusted and fixed by sliding back and forth in the vertical direction. The receiving plate can be rotated downwards to a vertically upward folded state and fixed, and rotated downwards to a horizontally unfolded state and fixed. When the receiving plate is in the horizontal state, a locking notch is provided on the top surface for inserting excess external cables.

[0010] By adopting the above technical solution, the receiving plate can be folded for storage and unfolded horizontally. When folded, it saves space and facilitates transportation. When unfolded, it can neatly store excess connecting cables through the locking notch, avoiding messy cable tangling that may affect equipment operation or heat dissipation. The overall design takes into account the convenience of handling, space utilization and cable storage standardization, making the installation, maintenance and transportation of the module more convenient, while also optimizing the cleanliness of the surrounding environment of the equipment.

[0011] Optionally, a dovetail slide rail is fixedly provided on the vertical side of the heat conduction box along the vertical direction, and a dovetail notch is provided on the traction handle to slide with the dovetail slide rail; an elastic snap-fit ​​component is provided on the inner wall of the dovetail notch, and a positioning groove is provided on the dovetail slide rail for the elastic snap-fit ​​component to snap into; anti-loosening screws are fixed at both ends of the dovetail slide rail.

[0012] By adopting the above technical solution, the cooperation between the dovetail slide rail and the dovetail notch ensures that the traction handle slides smoothly and accurately. The elastic snap-fit ​​and the positioning groove achieve high-speed positioning and fixation, making operation convenient. The anti-loosening screws at both ends can effectively prevent the traction handle from falling off when sliding, improving the safety of use. The overall structure is stable and reliable, which not only ensures the flexibility of traction handle adjustment, but also enhances connection stability, adapting to the needs of module handling and locking operations.

[0013] Optionally, the elastic snap-fit ​​component includes a compression spring and an arc-shaped protrusion. The inner wall of the dovetail notch is provided with a placement groove for the compression spring and the arc-shaped protrusion to be inserted. When the compression spring presses one side of the arc-shaped protrusion, a part of the arc-shaped protrusion protrudes from the opening of the placement groove. The outer surface of the protruding part of the arc-shaped protrusion is an arc surface, and the arc length corresponding to the arc surface is a minor arc.

[0014] By adopting the above technical solution, the compression spring provides continuous elastic pressure to the arc-shaped protrusion, so that it can be stably locked into the positioning groove to achieve reliable positioning; the inferior arc surface design of the arc-shaped protrusion reduces sliding resistance, allowing the traction handle to be smoothly squeezed out of the groove when adjusting, making operation easier; the overall structure is simple and compact, requiring no additional locking operation, which not only ensures positioning stability, but also improves the convenience and smoothness of adjusting the height of the traction handle.

[0015] Optionally, the heat-conducting box has two support rods and one connecting rod on each of the two sides facing the heat dissipation plate. The bottom of the heat-conducting box has four accommodating notches. One end of the support rod is rotatably connected to the inner wall of the accommodating notch, and the two ends of the connecting rod are respectively connected and fixed to the other ends of the two support rods on the same side. The two support rods on the same side can be rotated upward to a vertically upward state facing the heat dissipation plate and downward to a vertically downward state supporting the heat-conducting box. The locking notch is provided with a locking element, which can lock the support rods in both states when the traction handle slides and adjusts.

[0016] By adopting the above technical solutions, the support rod can be folded for storage or unfolded for support. When vertically downward, it provides stable support for the box, and when vertically upward, it saves space and facilitates transportation. The connecting rod enhances the integrity of the support rod on the same side and accommodates the notch for storage. The locking component locks in both states in conjunction with the traction handle, making operation convenient and balancing support stability with compact transportation.

[0017] Optionally, the locking element comprises a locking plate rotatably connected to the inner wall of the locking notch on one side, and a limiting rod rotatably mounted on the outer periphery of the support rod in a horizontal direction. The locking plate can rotate toward the receiving plate into the locking notch and away from the receiving plate to a state perpendicular to the receiving plate. Two locking rods are fixed on the side of the locking plate away from the receiving plate. The limiting rod has a first slot on its top surface when the support rod is in a vertically downward state and a second slot on its bottom surface when the support rod is in a vertically upward state. The locking rods are positioned such that when the receiving plate is horizontal and... When the locking plate is perpendicular to the receiving plate, it is in a vertically downward position. When the support rod is rotated to the vertically downward position, the limiting rod can rotate to a position where the first slot is directly below the locking rod. At this time, the locking rod can move with the traction handle and be inserted into the first slot. When the receiving plate is in a vertically upward position and the locking plate is rotated into the locking notch, the locking rod is in a vertically upward position. When the support rod is rotated to the vertically upward position, the limiting rod can rotate to a position where the second slot is directly above the locking rod. At this time, the locking rod can move with the traction handle and be inserted into the second slot.

[0018] By adopting the above technical solution, when the receiving plate is unfolded horizontally, the locking plate is vertically arranged so that the locking rod faces downwards. This, combined with the first slot of the limiting rod, locks the downward-facing support rod, ensuring the stability of the module during application. When the receiving plate is folded vertically, the locking plate rotates into the notch so that the locking rod faces upwards. The second slot of the limiting rod then locks the upward-facing support rod, saving transportation space. The locking plate can rotate to switch states to adapt to different scenario requirements. A horizontal rotation of the limiting rod aligns it with the slot, eliminating the need for complex operations. The traction handle slides, causing the locking rod to insert into the slot, achieving a linked locking mechanism. This simplifies the operation process while ensuring the reliability of the support rod locking in both states. It balances the stability of the module during application with the compactness of space during transportation, improving the overall practicality and convenience of use.

[0019] Optionally, the support rod is a telescopic rod with adjustable and fixed length.

[0020] By adopting the above technical solutions, the length of the support rod can be flexibly adjusted and fixed, adapting to the height requirements of different installation environments and ensuring stable support of the module during application; the length can be shortened during transportation to further reduce the space occupied and improve transportation convenience; at the same time, the support height can be finely adjusted according to the actual situation to adapt to complex installation scenarios inside the cabinet, enhancing the adaptability and stability of module installation.

[0021] Optionally, the locking plate has several mounting through holes, and a cooling fan is fixed on the inner wall of the mounting through holes.

[0022] By adopting the above technical solution, the locking plate combines locking function with auxiliary heat dissipation, achieving a functionally integrated design. In module application, the locking plate is perpendicular to the receiving plate, and the cooling fan can accelerate airflow towards the outside of the heat-conducting box. Combined with insulating oil, heat dissipation plates, and fins, a multi-layered heat dissipation system is formed, significantly improving heat dissipation efficiency. No additional cooling fan installation structure is required, saving space and simplifying the overall design. The cooling fan switches according to the locking plate's state to adapt to the application scenario, without affecting the structural compactness during transportation. While ensuring locking reliability, this further optimizes the module's heat dissipation performance and extends equipment lifespan.

[0023] Optionally, the limiting rod abuts against the joint between the heat-conducting box body and the heat-conducting box cover when the locking rod is engaged in the second slot.

[0024] By adopting the above technical solution, during transportation, the limiting rod abuts against the joint between the heat-conducting box and the box cover, which can buffer the impact force generated by transportation bumps, reduce the collision and wear at the joint, and enhance the structural protection; at the same time, in conjunction with the locking rod and the locking of the second slot, the overall structural stability is further improved during transportation, ensuring the safe transportation of the module.

[0025] In summary, this application includes the following beneficial technical effects: In this application, the insulating oil completely covers the main body of the module, forming a closed-loop heat dissipation system in conjunction with the heat-conducting box, heat sink, and heat sink fins. This system utilizes the excellent thermal conductivity of the insulating oil to quickly absorb the heat generated by the main body of the module during operation, while the heat sink and fins expand the heat dissipation area, accelerating the dissipation of heat to the outside. The heat dissipation efficiency far exceeds that of traditional air cooling. The heat-conducting box and the box cover form a sealed structure, with the wiring port only allowing the connecting cables to pass through. This effectively prevents dust, sand, and other impurities from entering the interior, avoiding the risk of reduced heat dissipation efficiency and equipment failure caused by the adhesion of impurities. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is an exploded structural diagram of an embodiment of this application; Figure 3This is a schematic diagram illustrating the installation and assembly of the traction handle in an embodiment of this application; Figure 4 This is a cross-sectional structural diagram illustrating the installation and mating of the traction handle in an embodiment of this application; Figure 5 yes Figure 4 An enlarged schematic diagram of part A in the middle; Figure 6 This is a cross-sectional structural diagram illustrating the installation and mating of the locking component in an embodiment of this application; Figure 7 This is a schematic diagram illustrating the installation and assembly of the support components in an embodiment of this application; Figure 8 This is a partial cross-sectional structural diagram illustrating the installation and engagement of the locking plate in an embodiment of this application.

[0027] In the diagram, 1. Module body; 11. Connecting cable; 2. Heat-conducting box; 21. Dovetail slide rail; 211. Positioning groove; 22. Accommodation notch; 3. Heat-conducting box cover; 31. Wiring port; 4. Heat dissipation component; 41. Heat dissipation plate; 42. Heat dissipation fins; 5. Traction component; 51. Traction handle; 511. Dovetail notch; 512. Placement slot; 52. Elastic snap-fit ​​component; 521. Compression spring; 522. Arc-shaped protrusion; 53. Support plate; 531. Locking notch; 6. Support assembly; 61. Support rod; 62. Connecting rod; 7. Locking component; 71. Locking plate; 711. Mounting through hole; 72. Locking rod; 73. Limiting rod; 731. First slot; 732. Second slot; 74. Cooling fan. Detailed Implementation

[0028] The present application will be further described in detail below with reference to all the accompanying drawings.

[0029] Example: Reference Figure 1 and Figure 2 An immersion oil-cooled power module for an integrated energy storage converter and boost converter includes a heat-conducting box 2 with an opening on the upper side, a module body 1 located inside the heat-conducting box 2, and a heat-conducting box cover 3 fixed on the top surface of the heat-conducting box 2. The heat-conducting box 2 is provided with insulating oil (not shown in the figure) covering the module body 1. A connecting cable 11 is fixed on the outer side of the module body 1, and a wiring port 31 for the connecting cable 11 to pass through is opened on the vertical side of the heat conduction box cover 3; a heat dissipation component 4 is fixed on the two opposite vertical sides of the heat conduction box 2, wherein the heat dissipation component 4 includes a heat dissipation plate 41 fixed on the heat conduction box 2, and a plurality of heat dissipation fins 42 are fixed on the outer side of the heat dissipation plate 41.

[0030] Reference Figure 3 and Figure 4The heat-conducting box 2 is provided with traction components 5 on two vertical sides perpendicular to the heat dissipation plate 41. The traction components 5 include traction handles 51 that can be detachably installed on the heat-conducting box 2 in the horizontal direction. The traction handles 51 are slidably mounted on the vertical sides of the heat-conducting box 2. The traction handles 51 can be adjusted and fixed by sliding back and forth in the vertical direction. When the operator moves the module, he / she can choose to adjust the traction handles 51 to the corresponding height.

[0031] Reference Figure 4 and Figure 5 A dovetail slide rail 21 is fixedly installed on the vertical side of the heat conduction box 2 along the vertical direction. A dovetail notch 511 is opened on the traction handle 51 to slide with the dovetail slide rail 21. An elastic snap-fit ​​member 52 is provided on the inner wall of the dovetail notch 511. Several positioning grooves 211 are opened on the dovetail slide rail 21 for the elastic snap-fit ​​member 52 to snap into. Anti-loosening screws are fixed at both ends of the dovetail slide rail 21 (not shown in the figure). The elastic snap-fit ​​component 52 includes a compression spring 521 and an arc-shaped protrusion 522. The inner wall of the dovetail notch 511 is provided with a placement groove 512 for the compression spring 521 and the arc-shaped protrusion 522 to be inserted. When the compression spring 521 presses one side of the arc-shaped protrusion 522, a part of the arc-shaped protrusion 522 protrudes from the opening of the placement groove 512. The outer side of the protruding part of the arc-shaped protrusion 522 is an arc surface, and the arc length corresponding to the arc surface is a minor arc.

[0032] Reference Figure 6 A receiving plate 53 is rotatably mounted on the top surface of the traction handle 51. The receiving plate 53 can be rotated downward to a vertically upward folded state and fixed, and rotated downward to a horizontally unfolded state and fixed. When the receiving plate 53 is in a horizontal state, a locking notch 531 is provided on the top surface for inserting excess external cables. When the power module is installed in the electrical cabinet and is in normal use, rotate the receiving plate 53 to a horizontal position, and then store the excess connecting cable 11 outside the heat conduction box 2 by winding it around the locking notch 531.

[0033] Reference Figure 6 and Figure 7 The heat-conducting box 2 is provided with support components 6 on both sides facing the heat dissipation plate 41. The support components 6 include two support rods 61 and a connecting rod 62. The support rods 61 are telescopic rods with adjustable length and fixed by wing bolts. This is a conventional telescopic structure and will not be described in detail here. There are accommodating notches 22 at the four corners of the bottom surface of the heat-conducting box 2. One end of the support rod 61 is rotatably connected to the inner wall of the accommodating notch 22. The two ends of the connecting rod 62 are respectively connected and fixed to the other ends of the two support rods 61 on the same side. The two support rods 61 on the same side can be rotated upward to a vertically upward state facing the heat dissipation plate 41 and downward to a vertically downward state supporting the heat conduction box 2; the receiving plate 53 is provided with a locking element 7 in the locking notch 531, and the locking element 7 can lock the support rods 61 in the two states respectively when it slides and adjusts with the traction handle 51.

[0034] Reference Figure 6 and Figure 8 The locking component 7 consists of a locking plate 71 rotatably connected to the inner wall of the locking notch 531 on one side, and a limiting rod 73 rotatably mounted on the outer periphery of the support rod 61 in the horizontal direction. The locking plate 71 can rotate toward the receiving plate 53 into the locking notch 531 and rotate away from the receiving plate 53 to a state perpendicular to the receiving plate 53. Two locking rods 72 are fixed on the side of the locking plate 71 away from the receiving plate 53. The limiting rod 73 has a first slot 731 on the top surface when the support rod 61 is in a vertical downward state and a second slot 732 on the bottom surface when the support rod 61 is in a vertical upward state. When this module is applied inside the electrical cabinet, the receiving plate 53 is in a horizontal state and the locking plate 71 is perpendicular to the receiving plate 53. The locking rod 72 is in a vertical downward state. First, the support rod 61 is rotated to a vertical downward state. Then, the limiting rod 73 can be rotated to a state where the first slot 731 is directly below the locking rod 72. Finally, the locking rod 72 can move with the traction handle 51 and be inserted into the first slot 731. When the module is shipped from the factory, the locking plate 71 is rotated into the locking notch 531 and the receiving plate 53 is in a vertically upward position. The locking rod 72 is in a vertically upward position. Then, the support rod 61 is rotated to a vertically upward position. The limiting rod 73 can be rotated to a position where the second slot 732 is directly above the locking rod 72. Finally, the locking rod 72 can be moved with the traction handle 51 and inserted into the second slot 732.

[0035] Reference Figure 6 The locking plate 71 has two mounting through holes 711, and a cooling fan 74 is fixed on the inner wall of the mounting through hole 711. When the module is in use, the two cooling fans 74 are in a vertical position facing the outer side of the heat conduction box 2. At this time, the cooling fans 74 can be activated to accelerate the dissipation of heat from the outside of the heat conduction box 2.

[0036] Reference Figure 7 and Figure 8 When the locking rod 72 is inserted into the second slot 732 (that is, when the module is shipped from the factory), the limiting rod 73 abuts against the joint between the heat-conducting box 2 and the heat-conducting box cover 3, thereby reducing the possibility of collisions at the joint between the heat-conducting box 2 and the heat-conducting box cover 3 during transportation and improving the corresponding protective performance.

[0037] The implementation principle of this application embodiment is as follows: Application status: The receiving plate 53 is rotated to a horizontal position and fixed, the locking plate 71 is rotated to be perpendicular to the receiving plate 53, and the locking rod 72 is vertically downward. The support rod 61 is rotated downward to support the heat conduction box 2 vertically, the limiting rod 73 is rotated to align the first slot 731 with the locking rod 72, and the sliding adjustment traction handle 51 drives the locking rod 72 to insert into the first slot 731, locking the support rod 61. Excess connecting cables 11 are stored in the locking notch 531 of the receiving plate 53, the cooling fan 74 is vertically facing the outside of the heat conduction box 2, and accelerates external heat dissipation after starting. Together with the heat dissipation component 4 and insulating oil of the heat conduction box 2, it achieves efficient heat dissipation; the traction handle 51 can be adjusted in height as needed for convenient handling and maintenance.

[0038] Transportation status: The receiving plate 53 is rotated to a vertical position and fixed, the locking plate 71 is rotated into the locking notch 531, and the locking rod 72 is vertically upward. The support rod 61 is rotated upward to a vertical position, and the limiting rod 73 is rotated to align the second slot 732 with the locking rod 72. The sliding traction handle 51 drives the locking rod 72 into the second slot 732, locking the support rod 61. At this time, the limiting rod 73 abuts against the junction of the heat-conducting box 2 and the box cover to prevent bumps during transportation; the traction handle 51 is height-adjustable for easy handling, and the folded locking of the support rod 61 reduces the space occupied during transportation and improves transportation safety.

[0039] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An immersion oil-cooled power module for an integrated energy storage converter and boost converter, characterized in that, It includes a heat-conducting box (2) with an opening on the upper side, a module body (1) located inside the heat-conducting box (2), and a heat-conducting box cover (3) fixed on the top surface of the heat-conducting box (2). The heat-conducting box (2) is provided with insulating oil covering the module body (1). A connecting cable (11) is fixed on the outer side of the module body (1), and a wiring port (31) for the connecting cable (11) to pass through is opened on the vertical side of the heat conduction box cover (3); a heat dissipation plate (41) is fixed on the two opposite vertical sides of the heat conduction box body (2), and a number of heat dissipation fins (42) are fixed on the outer side of the heat dissipation plate (41).

2. The immersion oil-cooled power module for an integrated energy storage converter and boost converter according to claim 1, characterized in that, The heat-conducting box (2) has detachable traction handles (51) on its two vertical sides perpendicular to the heat dissipation plate (41) along the horizontal direction.

3. The immersion oil-cooled power module for an integrated energy storage converter and boost converter according to claim 2, characterized in that, A receiving plate (53) is rotatably mounted on the top surface of the traction handle (51). The traction handle (51) is slidably mounted on the vertical side of the heat conduction box (2). The traction handle (51) can be adjusted and fixed by sliding back and forth in the vertical direction. The receiving plate (53) can be rotated downwards to a vertically upward folded state and fixed, and rotated downwards to a horizontally unfolded state and fixed; when the receiving plate (53) is in a horizontal state, a locking notch (531) is provided on the top surface for inserting excess external cables.

4. An immersion oil-cooled power module for an integrated energy storage converter and boost converter according to claim 3, characterized in that, The heat-conducting box (2) has a dovetail slide rail (21) fixed on its vertical side along the vertical direction, and the traction handle (51) has a dovetail notch (511) that slides with the dovetail slide rail (21). The inner wall of the dovetail notch (511) is provided with an elastic snap-fit ​​component (52), and the dovetail slide rail (21) is provided with a positioning groove (211) for the elastic snap-fit ​​component (52) to be snapped into; both ends of the dovetail slide rail (21) are fixed with anti-loosening screws.

5. An immersion oil-cooled power module for an integrated energy storage converter and boost converter according to claim 4, characterized in that, The elastic snap-fit ​​component (52) includes a compression spring (521) and an arc-shaped protrusion (522). The inner wall of the dovetail notch (511) is provided with a placement groove (512) for the compression spring (521) and the arc-shaped protrusion (522) to be inserted. When the compression spring (521) presses one side of the arc-shaped protrusion (522), a part of the arc-shaped protrusion (522) protrudes from the opening of the placement groove (512). The outer surface of the protruding part of the arc-shaped protrusion (522) is an arc surface, and the arc length corresponding to the arc surface is a minor arc.

6. An immersion oil-cooled power module for an integrated energy storage converter and boost converter according to claim 3, characterized in that, The heat-conducting box (2) is provided with two support rods (61) and a connecting rod (62) on both sides facing the heat dissipation plate (41). The bottom of the heat-conducting box (2) is provided with accommodating notches (22) at the four corners. One end of the support rod (61) is rotatably connected to the inner wall of the accommodating notch (22), and the two ends of the connecting rod (62) are respectively connected and fixed to the other ends of the two support rods (61) on the same side. The two support rods (61) on the same side can be rotated upward to a vertically upward state facing the heat dissipation plate (41) and downward to a vertically downward state supporting the heat conduction box (2). The locking notch (531) is provided with a locking member (7). When the locking member (7) slides and adjusts with the traction handle (51), it can lock the support rods (61) in both states.

7. An immersion oil-cooled power module for an integrated energy storage converter and boost converter according to claim 6, characterized in that, The locking component (7) is a locking plate (71) rotatably connected to the inner wall of the locking notch (531) on one side, and a limiting rod (73) rotatably mounted on the outer periphery of the support rod (61) in the horizontal direction. The locking plate (71) can rotate toward the receiving plate (53) into the locking notch (531) and rotate away from the receiving plate (53) to a state perpendicular to the receiving plate (53). Two locking rods (72) are fixed on the side of the locking plate (71) away from the receiving plate (53). The limiting rod (73) has a first slot (731) on the top surface when the support rod (61) is in a vertical downward state and a second slot (732) on the bottom surface when the support rod (61) is in a vertical upward state. When the receiving plate (53) is in a horizontal state and the locking plate (71) is perpendicular to the receiving plate (53), the locking rod (72) is in a vertically downward state. When the support rod (61) is rotated to a vertically downward state, the limiting rod (73) can be rotated to a state where the first slot (731) is located directly below the locking rod (72). At this time, the locking rod (72) can move with the traction handle (51) and be inserted into the first slot (731). When the receiving plate (53) is in a vertically upward state and the locking plate (71) is turned into the locking notch (531), the locking rod (72) is in a vertically upward state. At this time, the support rod (61) is turned to a vertically upward state. The limiting rod (73) can be turned to a state where the second slot (732) is directly above the locking rod (72). At this time, the locking rod (72) can be moved with the traction handle (51) and inserted into the second slot (732).

8. An immersion oil-cooled power module for an integrated energy storage converter and boost converter according to claim 7, characterized in that, The support rod (61) is a telescopic rod with adjustable and fixed length.

9. An immersion oil-cooled power module for an integrated energy storage converter and boost converter according to claim 7, characterized in that, The locking plate (71) has a plurality of mounting through holes (711), and a cooling fan (74) is fixed on the inner wall of the mounting through holes (711).

10. An immersion oil-cooled power module for an integrated energy storage converter and boost converter according to claim 7, characterized in that, The limiting rod (73) abuts against the joint between the heat-conducting box body (2) and the heat-conducting box cover (3) when the locking rod (72) is engaged in the second slot (732).

Images