Bidirectional converter and energy storage cabinet

Abstract

The utility model relates to a bidirectional converter and an energy storage cabinet, the bidirectional converter comprises a box shell, a breather valve and an electrical assembly, the box shell comprises an upper box body and a partition plate, the partition plate is fixedly connected to the upper box body, and a closed cavity can be defined between the upper box body and the partition plate; the breather valve is mounted on the upper box body, and air in the closed cavity can be in gas communication with external air through the breather valve so as to balance air pressure inside and outside the upper box body; the electrical assembly is arranged in the closed chamber. Therefore, not only can the protection grade of the bidirectional converter be improved, but also the service life of the electrical component is prolonged, and the conduction of gas between the closed cavity and external air can be utilized to play a role in heat dissipation and prevent the formation of condensed water in the upper box body, so that the bidirectional converter has higher practicability and economic value.

Description

Technical Field

[0001] The utility model belongs to the technical field related to energy storage equipment, and in particular relates to a bidirectional converter and an energy storage cabinet. Background Art

[0002] The bidirectional converter (PCS) is the core component that enables bidirectional energy flow between the energy storage system and the grid. It is primarily responsible for controlling the battery's charging and discharging processes, performing AC-to-DC conversion. Specifically, the PCS plays a crucial role in AC-coupled energy storage systems, such as grid-connected and microgrid energy storage. It serves as a bridge connecting the battery pack with the grid or loads, enabling bidirectional energy conversion. It can convert the battery's DC power into AC power for the grid or AC loads, and it can also convert the grid's AC power into DC power to charge the battery.

[0003] The widespread promotion and application of energy storage equipment has encountered many challenges from environmental factors such as humidity, heavy rain, and rapid and large temperature changes. As extreme weather conditions become more and more frequent, the protection requirements for energy storage equipment are also becoming higher and higher. Currently, many industrial and commercial energy storage cabinets on the market have limited protection levels, and the protection level of the air-cooled PCS bidirectional converter is also not high. In order to protect the expensive core components of the air-cooled PCS bidirectional converter from damage due to water ingress, most choose to design the battery compartment and electrical compartment of the energy storage cabinet into a left-right structure, and suspend the air-cooled PCS bidirectional converter inside the electrical compartment, or design an upper-lower structure, and place the air-cooled PCS bidirectional converter at the top of the energy storage cabinet. Because it is placed below the cabinet, there is a risk of water ingress, especially for liquid cooling cabinets, there is a risk of large amounts of coolant flowing out due to pipe bursting. However, new problems arise during actual use. The left and right structures occupy a large area, and the construction costs and internal cabling costs are high. Although the structure of placing the air-cooled PCS bidirectional converter on the top reduces the floor space, it increases the costs of internal cabling. In addition, the air-cooled PCS bidirectional converter itself generates a lot of heat during operation. Placing it on the top of the cabinet is prone to high temperature exposure, which causes the PCS bidirectional converter to be in a high-temperature working environment for a long time and is easily damaged. Because the air-cooled PCS bidirectional converter itself has a low level of protection, both of the above existing solutions face the risk of water ingress due to condensation and failure of the energy storage cabinet body protection. To improve this problem, high-protection liquid-cooled PCS bidirectional converters have appeared on the market, but due to their high cost and difficulty in maintenance, their popularity is limited. The market is in urgent need of a PCS bidirectional converter with a lower cost and higher level of protection. Utility Model Content

[0004] In view of this, it is necessary to provide a bidirectional converter and energy storage cabinet with a higher protection level and lower cost.

[0005] A bidirectional converter, comprising:

[0006] The box shell includes an upper box body and a partition, wherein the partition is fixedly connected to the upper box body, and a closed chamber can be formed between the upper box body and the partition;

[0007] A breathing valve is installed on the upper box body, and the air in the closed chamber can be connected to the external air through the breathing valve to balance the air pressure inside and outside the upper box body;

[0008] The electrical components are arranged in the sealed chamber.

[0009] It can be understood that the electrical components are arranged in the closed chamber of the upper box, and a breathing valve is used to balance the internal and external air pressure of the upper box. This not only improves the protection level of the bidirectional converter and increases the service life of the electrical components, but also utilizes the conduction of gas between the closed chamber and the external air to dissipate heat and prevent the formation of condensation water inside the upper box. In this way, the bidirectional converter can have higher practicality and economic value.

[0010] In one embodiment, the breathing valve includes a breathable membrane, which allows air to flow and can block water flow.

[0011] It can be understood that, by utilizing the characteristics of the breathable membrane, the breathing valve has the function of being breathable and waterproof when assembled on the upper box body, so as to meet the use requirements of the bidirectional converter.

[0012] In one embodiment, the box shell further includes a lower box body, which is arranged on a side of the partition away from the upper box body and connected to the upper box body and / or the partition body, so that the upper box body and the lower box body are stacked;

[0013] The bidirectional converter further includes a heat dissipation component, which is disposed in the lower box and is used to dissipate heat from the electrical components.

[0014] It can be understood that the above-mentioned structural arrangement can meet the requirements of assembling the electrical components in the upper box body, and the heat dissipation components can be used to dissipate heat from the electrical components.

[0015] In one embodiment, the bidirectional converter further includes a mounting plate, the mounting plate is spaced apart from the partition, and the electrical components are disposed on the mounting plate.

[0016] It can be understood that through the above-mentioned structural setting, on the one hand, it can be ensured to the greatest extent that the electrical components can be independently arranged in a closed chamber to prevent external water intrusion and damage to the electrical components. On the other hand, it can also meet the normal heat dissipation requirements of the electrical components during operation to ensure the normal operation of the bidirectional converter.

[0017] In one embodiment, the heat dissipation component includes a radiator, which includes a heat dissipation plate and a heat dissipation fin. The heat dissipation plate is disposed in the sealed chamber and exchanges heat with the electrical component. The heat dissipation plate is abutted against the partition and sealed thereto.

[0018] The heat sink is arranged through the partition and exchanges heat with the heat sink, and the heat sink can transfer the heat generated by the electrical component when it is working into the lower box.

[0019] It can be understood that through the above-mentioned structural setting, the assembly of the radiator will not affect the sealing of the closed chamber in the upper box, and the heat sink on the radiator can be used to transfer the heat generated by the electrical components when they are working to the lower box to meet the use requirements of heat dissipation of the electrical components.

[0020] In one embodiment, an air inlet and an air outlet are provided on the lower box body, the air inlet is connected to the air outlet and forms an air duct connected to the external air, and the air flowing in the air duct can cool the heat sink.

[0021] It can be understood that, through the above structural arrangement, the bidirectional converter can dissipate heat from the radiator in an air-cooling manner when working.

[0022] In one embodiment, the bidirectional converter further includes a cooling fan, and the cooling fan is installed in the lower box;

[0023] Wherein, the heat dissipation fan is arranged in the air duct.

[0024] It is understandable that the use of a cooling fan to accelerate the flow of air in the air duct can improve the heat dissipation efficiency of the radiator when dissipating heat from the electrical components.

[0025] In one embodiment, the electrical component includes a high-heat-generating component and a low-heat-generating component, and the high-heat-generating component is disposed against the heat dissipation plate.

[0026] It can be understood that, through the above-mentioned structural setting, the heat sink can dissipate heat from high-heat generating components that generate a large amount of heat when the electrical components are working, thereby improving the heat dissipation efficiency of the radiator when dissipating heat to the electrical components.

[0027] In one embodiment, the high-heat-generating component is arranged between the low-heat-generating components, and mounting plates spaced apart from the partitions are provided on both sides of the heat dissipation plate. The low-heat-generating component is installed on the mounting plates, and the bottom of the high-heat-generating component is simultaneously placed against the heat dissipation plate and the mounting plates on both sides.

[0028] It can be understood that, through the above-mentioned structural arrangement, the electrical component is assembled in the sealed chamber and heat exchange is performed with the heat sink at the same time.

[0029] In addition, the present application also provides an energy storage cabinet, including a battery pack and the bidirectional converter described above, wherein the battery pack is arranged above the bidirectional converter.

[0030] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0031] The bidirectional converter and energy storage cabinet for which protection is sought in this application arrange the electrical components in a sealed chamber of the upper box and use a breathing valve to balance the internal and external air pressures of the upper box. This not only improves the protection level of the bidirectional converter and increases the service life of the electrical components, but also utilizes the conduction of gas between the sealed chamber and the external air to dissipate heat and prevent the formation of condensed water inside the upper box. In this way, the bidirectional converter can have higher practicality and economic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 This is a schematic diagram of the structure of the bidirectional converter provided in this application.

[0034] Figure 2 This is a structural diagram of the bidirectional converter provided in this application from another perspective.

[0035] Figure 3 This is an exploded view of the bidirectional converter provided in this application.

[0036] Figure 4 This is a cross-sectional view of the bidirectional converter provided in this application.

[0037] Figure 5 This is a schematic diagram of the structure when the upper box shell and the partition are assembled in this application.

[0038] Figure 6 This is a schematic diagram of the structure of the radiator in this application.

[0039] Figure numerals: 100, bidirectional converter; 10, casing; 11, upper casing; 111, upper casing; 112, upper cover plate; 12, partition; 121, first through hole; 122, second through hole; 123, threading hole; 13, lower casing; 131, lower casing; 132, lower cover plate; 133, air inlet; 134, air outlet; 14, mounting plate; 20, breathing valve; 30, electrical component; 301, high-heat-generating component; 302, low-heat-generating component; 31, connector; 32, circuit board; 40, radiator; 41, heat sink; 411, supporting surface; 412, threaded hole; 42, heat sink; 50, cooling fan; 51, fan bracket; 60, connecting fixing plate; 101, sealed chamber. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] It should be noted that when an element is referred to as being “provided on” another element, it may be directly provided on the other element or there may be an intermediate element. When an element is considered to be “provided on” another element, it may be directly provided on the other element or there may be an intermediate element. When an element is considered to be “fixed to” another element, it may be directly fixed to the other element or there may be an intermediate element.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] like Figures 1 to 4As shown, the bidirectional converter 100 provided in this application includes a housing 10, a breathing valve 20, and an electrical component 30. The housing 10 includes an upper housing 11 and a partition 12. The partition 12 is fixedly connected to the upper housing 11, and a sealed chamber 101 can be formed between the upper housing 11 and the partition 12. The breathing valve 20 is installed on the upper housing 11, and the air in the sealed chamber 101 can be connected to the external air through the breathing valve 20 to balance the air pressure inside and outside the upper housing 11. The electrical component 30 is arranged in the sealed chamber 101. It should be noted that the structural composition of the above-mentioned electrical component 30 can adopt the conventional method of existing bidirectional converters, which will not be elaborated here.

[0044] It can be understood that the electrical component 30 is arranged in the closed chamber 101 of the upper box body 11, and the breathing valve 20 is used to balance the internal and external air pressure of the upper box body 11. This not only improves the protection level of the bidirectional converter 100 and increases the service life of the electrical component 30, but also utilizes the conduction of gas between the closed chamber 101 and the external air to dissipate heat and prevent the formation of condensed water inside the upper box body 11. In this way, the bidirectional converter 100 can have higher practicality and economic value.

[0045] like Figures 1 to 4 As shown, the upper box body 11 includes an upper box shell 111 and an upper sealing plate 112. The upper sealing plate 112 is attached to one end of the upper box shell 111 and is connected and sealed to the upper box shell 111. Here, waterproof glue can be applied to the contact surface between the upper box shell 111 and the upper sealing plate 112, and then the upper sealing plate 112 can be fixed to the upper box shell 111 with screws coated with thread glue. In this way, after the electrical components 30 are assembled in the upper box shell 111, the upper box shell 111 can be covered with the upper sealing plate 112, and the use requirements of the electrical components 30 assembled in the upper box body 11 are met. It should be noted that the partition 12 is assembled to the other end of the upper box shell 111 by welding.

[0046] like Figures 1 to 4 As shown, the housing 10 further includes a lower housing 13, which is disposed on the side of the partition 12 facing away from the upper housing 11 and is connected to the upper housing 11 and / or the partition 12, so that the upper housing 11 and the lower housing 13 are stacked. In other words, the housing 10 utilizes a top-to-bottom layered design, which maximizes the ability to independently house the electrical components 30 within the sealed chamber 101 and prevents damage to the electrical components 30 from external water intrusion. The bidirectional converter 100 further includes a heat sink assembly disposed within the lower housing 13 for dissipating heat from the electrical components 30.

[0047] like Figures 1 to 4As shown, the lower box body 13 includes a lower box shell 131 and a lower sealing plate 132. The lower box shell 131 can be connected and fixed to the upper box shell 111 by welding, and the lower sealing plate 132 can be fixed to the lower box shell 131 by screws (not shown in the figure), so as to meet the subsequent use requirements of assembling the cooling fan 50 into the lower box body 13.

[0048] As shown in the figure, the bidirectional converter 100 further includes a mounting plate 14 , which is spaced apart on the partition 12 , and the electrical component 30 is disposed on the mounting plate 14 , thereby meeting the use requirement of assembling the electrical component 30 in the sealed chamber 101 .

[0049] In the present application, the breathing valve 20 includes a breathable membrane (not shown) that allows air to circulate and blocks water from flowing. In other words, the breathing valve 20 can utilize the breathable membrane's air-permeable but water-tight properties to achieve communication between the upper case 11 and the external air, and prevent external water from invading the sealed chamber 101, thereby meeting the use requirements of the bidirectional converter 100. It should be noted that the breathing valve 20 of the present application is assembled to the rear side of the upper case 11 to avoid the assembly of the connector 31 of the electrical component 30 on the upper case 11.

[0050] Preferably, the breathing valve 20 is connected to the upper box body 11 in a threaded manner, which facilitates the assembly of the breathing valve 20 on the upper box body 11. At the same time, the threaded matching structure ensures the sealing of the breathing valve 20 when assembled on the upper box body 11. Here, the breathing valve 20 is fixed to the upper box body 11 by a nut connection.

[0051] like Figure 4 As shown, the heat dissipation component includes a radiator 40, which exchanges heat with the electrical component 30. The radiator 40 can transfer the heat generated by the electrical component 30 when it is working to the lower box 13 and dissipate the heat of the electrical component 30. This can meet the normal heat dissipation requirements of the electrical component 30 when it is working, so as to ensure the normal operation of the bidirectional converter 100.

[0052] like Figure 4 、 Figure 5As shown, the heat sink 40 includes a heat sink plate 41 and heat sink fins 42. The heat sink 42 is disposed within the sealed chamber 101 and exchanges heat with the electrical component 30. Furthermore, the heat sink plate 41 is abutted against the partition 12 and sealed thereto. This ensures that the assembly of the heat sink 40 does not affect the sealing of the sealed chamber 101 within the upper housing 11. The heat sink 42 on the heat sink 40 can transfer heat generated by the electrical component 30 during operation to the lower housing 13, thereby dissipating heat from the electrical component 30. Here, a first through-hole 121 is defined in the partition 12. The heat sink 42 extends through the first through-hole 121 into the lower housing 13 until the heat sink 41 of the heat sink 40 abuts against the circuit board 32 of the electrical component 30. Thus, when the bidirectional converter 100 is in operation, heat generated by the circuit board 32 can be transferred to the lower housing 13 via the heat sink plate 41 and heat sink fins 42, thereby dissipating heat from the electrical component 30. It should be noted that there are multiple heat sinks 42 , and the multiple heat sinks 42 are sequentially and spaced apart from each other on the heat dissipation plate 41 .

[0053] As preferably, Figure 6 As shown, the heat sink 41 is provided with a plurality of threaded holes 412 on the supporting surface 411 around the heat sink 42. When the radiator 40 needs to be assembled on the partition 12, the supporting surface 411 coated with heat-resistant and waterproof glue can be brought into contact with the partition 12, and then a screw coated with threaded glue is passed through the second through hole 122 on the partition 12 and screwed to the threaded hole 412, so that the heat sink 41 can be assembled and sealed on the partition 12.

[0054] As shown in the figure, the electrical component 30 includes a high-heating component 301 and a low-heating component 302. The high-heating component 301 is positioned adjacent to the heat sink 41. Here, the high-heating component 301 specifically refers to the component of the electrical component 30 that generates a high amount of heat during operation; the low-heating component 302 specifically refers to the component of the electrical component 30 that generates a low amount of heat during operation. This allows the heat sink 41 to dissipate the high-heating component 301, which generates a high amount of heat during operation, thereby improving the heat dissipation efficiency of the heat sink 40.

[0055] As shown in the figure, the high-heat-generating component 301 is positioned between the low-heat-generating components 302. Mounting plates 14 are provided on either side of the heat sink 41, spaced apart from the partitions 12. The low-heat-generating component 302 is mounted on the mounting plates 14. The bottom of the high-heat-generating component 301 is positioned against both the heat sink 41 and the mounting plates 14 on either side. This allows the electrical component 30 to be assembled within the sealed chamber 101 while simultaneously exchanging heat with the heat sink 41.

[0056] like Figures 1 to 3As shown, the lower case 13 is provided with an air inlet 133 and an air outlet 134. The air inlet 133 and the air outlet 134 communicate with each other, forming an air duct (not shown) that connects to the external air. The air flowing through the air duct cools the heat sink 42. In other words, the bidirectional converter 100 can dissipate heat from the radiator 40 through air cooling during operation. Here, the air inlet 133 and the air outlet 134 are arranged on opposite sides of the upper and lower shells 131 of the lower case 13.

[0057] like Figure 3 、 Figure 4 As shown, the bidirectional converter 100 further includes a cooling fan 50, which is installed within the lower housing 13 and disposed within the air duct. This allows the cooling fan 50 to accelerate the flow of air within the air duct during operation, thereby improving the heat dissipation efficiency of the radiator 40 when dissipating heat from the electrical components 30. The cooling fan 50 is preferably an IP68 rated fan and can be fixedly mounted to the lower housing 13 via a fan bracket 51, which can be fixed to the lower housing 13 using screws.

[0058] Preferably, as shown in the figure, there are multiple cooling fans 50, which are arranged on both sides of the heat sink 42 on the radiator 40 along the flow direction of the air in the air duct. This can further increase the flow speed of the air in the air duct, thereby further improving the heat dissipation efficiency of the radiator 40 when dissipating heat to the electrical components 30.

[0059] like Figure 2 As shown, the cooling fan 50 includes a wiring harness (not shown), which passes through the partition 12 and is electrically connected to the electrical assembly 30. The wiring harness and the partition 12 are sealed, allowing the electrical assembly 30 to control the cooling fan 50 during operation and ensuring the sealing of the sealed chamber 101 within the upper housing 11. Here, when the wiring harness passes through the wire hole 123 in the partition 12, a waterproof sealing ring (not shown) coated with waterproof glue is used to secure the wiring harness to the partition 12, thereby achieving a sealed assembly of the wiring harness on the partition 12.

[0060] like Figures 1 to 3 As shown, the bidirectional converter 100 further includes a connecting and fixing plate 60, which is fixedly connected to the upper case 11 and / or the lower case 13. Furthermore, the bidirectional converter 100 can be assembled via the connecting and fixing plate 60, so that the bidirectional converter 100 can be assembled via the connecting and fixing plate 60, thereby facilitating subsequent assembly and application of the bidirectional converter 100. Here, the connecting and fixing plate 60 is fixed to the upper case 11 and the lower case 13 by welding.

[0061] In summary, when the bidirectional converter 100 of the present application is working, the electrical component 30 generates heat, and the air inside the upper box body 11 expands due to the heat. The hot air can convect with the external air through the breathing valve 20 and achieve the effect of pressure relief. In this process, some heat can be taken away; when the bidirectional converter 100 is not working, or is temperature-controlled by the cooling system, the external air can enter the upper box body 11 through the breathing valve 20 to achieve pressure balance inside and outside the upper box body 11, so as to reduce the influence of the pressure difference on the upper box body 11; and when condensed water appears inside the upper box body 11, it can be convected with the external air through the breathing valve 20, so that the condensed water can be dried into water vapor and prevented from gathering into water, thereby protecting the electrical component 30. In addition, when the bidirectional converter 100 is attacked by rain or condensed water in the environment where the bidirectional converter 100 is located, the breathing valve 20 has the characteristics of being waterproof and breathable, which can effectively prevent water from invading the upper box 11 of the bidirectional converter 100 and protect the electrical components 30.

[0062] In addition, the present application also provides an energy storage cabinet, including a battery pack and the bidirectional converter 100 described above, wherein the battery pack is arranged above the bidirectional converter 100 .

[0063] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection claimed by the present invention.

Claims

1. A bidirectional converter, characterized in that: The bidirectional converter (100) comprises: The box shell (10) comprises an upper box body (11) and a partition (12), wherein the partition (12) is fixedly connected to the upper box body (11), and a sealed chamber (101) can be formed between the upper box body (11) and the partition (12); A breathing valve (20) is installed on the upper box body (11), and the air in the closed chamber (101) can be connected to the external air through the breathing valve (20), so as to balance the internal and external air pressures of the upper box body (11); The electrical component (30) is disposed in the sealed chamber (101).

2. The bidirectional converter according to claim 1, characterized in that: The breathing valve (20) comprises a breathable membrane, which allows air to flow and can block water from flowing.

3. The bidirectional converter according to claim 1, wherein: The box shell (10) further comprises a lower box body (13), the lower box body (13) being arranged on a side of the partition (12) away from the upper box body (11) and connected to the upper box body (11) and / or the partition (12), so that the upper box body (11) and the lower box body (13) are stacked. The bidirectional converter (100) further comprises a heat dissipation component, which is arranged in the lower box (13) and is used to dissipate heat from the electrical component (30).

4. The bidirectional converter according to claim 3, characterized in that: The bidirectional converter (100) further includes a mounting plate (14), wherein the mounting plate (14) is spaced apart and arranged on the partition plate (12), and the electrical component (30) is arranged on the mounting plate (14).

5. The bidirectional converter according to claim 3, characterized in that: The heat dissipation component includes a radiator (40), the radiator (40) includes a heat dissipation plate (41) and a heat dissipation fin (42), the heat dissipation plate (41) is arranged in the sealed chamber (101) and exchanges heat with the electrical component (30), and the heat dissipation plate (41) is attached to the partition (12) and is connected and sealed to the partition (12); The heat sink (42) is arranged through the partition (12) and exchanges heat with the heat sink (41), and the heat sink (42) can transfer heat generated by the electrical component (30) during operation to the lower box (13).

6. The bidirectional converter according to claim 5, characterized in that: An air inlet (133) and an air outlet (134) are provided on the lower box body (13); the air inlet (133) and the air outlet (134) are connected to form an air duct connected to external air; the air flowing in the air duct can cool and dissipate heat for the heat sink (42).

7. The bidirectional converter according to claim 6, characterized in that: The bidirectional converter (100) further includes a cooling fan (50), and the cooling fan (50) is installed in the lower box (13); Wherein, the heat dissipation fan (50) is arranged in the air duct.

8. The bidirectional converter according to claim 5, characterized in that: The electrical component (30) comprises a high-heat-generating component (301) and a low-heat-generating component (302), and the high-heat-generating component (301) is disposed in close contact with the heat dissipation plate (41).

9. The bidirectional converter according to claim 8, characterized in that: The high-heat-generating component (301) is arranged between the low-heat-generating components (302); mounting plates (14) spaced apart from the partition (12) are arranged on both sides of the heat dissipation plate (41); the low-heat-generating component (302) is mounted on the mounting plates (14); and the bottom of the high-heat-generating component (301) is simultaneously arranged against the heat dissipation plate (41) and the mounting plates (14) on both sides.

10. An energy storage cabinet, characterized in that: The invention comprises a battery pack and a bidirectional converter (100) according to any one of claims 1 to 9, wherein the battery pack is arranged above the bidirectional converter (100).

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