Cabinet body of photovoltaic converter

Abstract

The utility model relates to a photovoltaic current transformer, the photovoltaic current transformer comprises a strong electric device and a weak electric device, the cabinet body is provided with a top plate, a bottom plate, a front panel, a rear panel and two side plates, the cabinet body is characterized in that the interior of the cabinet body is divided into a first cooling area and a second cooling area by a partition plate, the first cooling area is provided with a first cooling area, the second cooling area is provided with a second cooling area, and the second cooling area is provided with a second cooling area. In the first cooling area, the strong electric device is cooled, and in the second cooling area, the weak electric device is cooled at a cooling temperature lower than the cooling temperature of the first cooling area. According to the cabinet body of the photovoltaic converter, the cabinet body is divided into the first cooling area and the second cooling area, the strong electric device is cooled in the first cooling area, and the weak electric device is cooled at the cooling temperature lower than the cooling temperature of the first cooling area in the second cooling area. And devices with different requirements on cooling temperature can be cooled without mutual interference, so that a good cooling effect is achieved.

Description

Technical Field

[0001] The present application relates to a cabinet of a photovoltaic converter. Background Art

[0002] In order to cope with global warming, countries have increasingly stringent requirements for carbon emissions. Photovoltaic power generation technology, as a clean energy source, can effectively reduce carbon emissions and has broad development prospects. At present, photovoltaic power generation technology has been widely used in areas with abundant solar energy. Photovoltaic inverters are an important component of the entire system that collects light energy and converts it into electrical energy. With the widespread application of photovoltaic power generation systems, photovoltaic inverters, which are used as supporting systems, are also constantly developing and upgrading, and their internal structures are constantly being optimized. Since the inverter cabinet is large and involves many functional components, after-sales maintenance issues are particularly prominent. In order to deal with these problems, modular and highly maintainable photovoltaic inverter cabinets have been developed.

[0003] Since the photovoltaic inverter includes a variety of devices with different functions, and different devices have different requirements for heat dissipation conditions, in the photovoltaic inverter cabinet according to the prior art, there is a problem that the heat dissipation between devices with different requirements for heat dissipation conditions interferes with each other, resulting in the problem that the heat dissipation of each device cannot be effectively performed. Utility Model Content

[0004] The present application is made in view of the technical problems existing in the above-mentioned prior art, and its purpose is to provide a photovoltaic inverter cabinet that is partitioned and modularized according to the different requirements of different devices in the photovoltaic inverter for heat dissipation conditions, which can suppress or reduce the mutual interference of heat dissipation between devices with different requirements for heat dissipation conditions, and effectively dissipate heat for each device in the photovoltaic inverter.

[0005] According to one solution of the present application, a cabinet for a photovoltaic inverter is provided. The photovoltaic inverter includes strong current devices and weak current devices. The cabinet has a top plate, a bottom plate, a front panel, a rear panel, and two side panels. The interior of the cabinet is divided into a first cooling area and a second cooling area by a partition. In the first cooling area, the strong current devices are cooled, and in the second cooling area, the weak current devices are cooled at a cooling temperature lower than the cooling temperature of the first cooling area.

[0006] The cabinet of the photovoltaic inverter according to the present application may also be: in the first cooling area, cooling is performed by air cooling, and in the second cooling area, an evaporator for cooling the second cooling area is provided.

[0007] According to the cabinet of the photovoltaic inverter mentioned above in the present application, it can also be: a power module cabinet is arranged in the second cooling area, and a power module radiator is arranged in the power module cabinet, thereby forming a third cooling area with a cooling temperature lower than the cooling temperature of the second cooling area.

[0008] According to the cabinet of the photovoltaic inverter mentioned above in the present application, a guide rail is arranged on the surface of the partition located on the side of the second cooling area, a push-pull plate is arranged on the guide rail so as to be movable along the guide rail, and a weak current device is arranged on the push-pull plate.

[0009] According to the cabinet of the photovoltaic inverter mentioned above in the present application, a guide rail is arranged on the surface of the partition located on the side of the second cooling area, a push-pull plate is arranged on the guide rail so as to be movable along the guide rail, and a weak current device is arranged on the push-pull plate.

[0010] According to the cabinet of the photovoltaic inverter mentioned above in the present application, it can also be: an air inlet is formed in the part of the bottom plate located on the side of the first cooling area relative to the partition, and an air outlet is formed on the side plate of the two side plates located on the side of the first cooling area. In the first cooling area, a fan is arranged, and the fan is used to make air flow from the air inlet into the first cooling area and flow out of the first cooling area from the air outlet, so as to cool the high-voltage components arranged in the first cooling area.

[0011] The cabinet of the photovoltaic inverter according to the present application may also be: an evaporator backpack is arranged on the rear panel, and the evaporator is arranged in the evaporator backpack.

[0012] According to the above-mentioned photovoltaic inverter cabinet of the present application, the partition may also be formed of a heat insulating material.

[0013] According to the cabinet of the photovoltaic inverter described above in the present application, a plurality of the power module cabinets may be provided, and each of the power module cabinets may be provided with the power module radiator, thereby forming a plurality of the third cooling areas.

[0014] According to the above-mentioned photovoltaic inverter cabinet of the present application, the number of the power module cabinets may also be two.

[0015] According to the cabinet of the photovoltaic inverter described above in the present application, the power module heat sink may be composed of an aluminum plate having a refrigerant passage inside.

[0016] The cabinet of the photovoltaic inverter according to the present application may also be: in the first cooling area, a circuit breaker fixing bracket for fixing the circuit breaker and a reactor base for supporting the reactor are provided.

[0017] According to the cabinet of the photovoltaic inverter described above in the present application, the weak-current components arranged on the push-pull plate may include one or more components selected from the group consisting of a switching power supply, a relay, an overcurrent circuit breaker, a filter, and a circuit protection component.

[0018] The cabinet of the photovoltaic inverter according to the present application may also be: an inlet cover is provided on the side panel located on the first cooling area side among the two side panels, and an outlet cover is provided on the rear panel.

[0019] The cabinet of the photovoltaic inverter according to the present application may also include: a photovoltaic wiring cover is further provided on the rear panel.

[0020] Effect of utility model

[0021] According to the cabinet of the photovoltaic inverter of the present application, the interior of the cabinet is divided into a first cooling area and a second cooling area by a partition. In the first cooling area, the high-voltage components are cooled, and in the second cooling area, the low-voltage components are cooled at a cooling temperature lower than the cooling temperature of the first cooling area. Devices with different requirements for cooling temperature (high-voltage components and low-voltage components) can be cooled without interfering with each other, thereby obtaining a good cooling effect for different devices.

[0022] In addition, by cooling by air cooling in the first cooling area, an evaporator for cooling the second cooling area is provided in the second cooling area, so that the high-voltage electrical components with a large heat generation but relatively high temperature resistance arranged in the first cooling area can be cooled at ambient temperature, and at the same time, the low-voltage electrical components with a relatively small heat generation and weak temperature resistance (more sensitive to temperature) arranged in the second cooling area can be cooled at a temperature lower than the ambient temperature, thereby meeting the requirements of high-voltage electrical components and low-voltage electrical components for different cooling conditions.

[0023] In addition, by setting a power module cabinet in the second cooling area and setting a power module radiator in the power module cabinet, a third cooling area with a cooling temperature lower than that of the second cooling area is formed. This can effectively cool the power module devices with a large heat generation and weak temperature resistance (highly sensitive to temperature) set in the third cooling area, and suppress the mutual interference between the cooling in the third cooling area and the cooling in the first cooling area and the second cooling area.

[0024] In addition, by arranging a guide rail on the surface of the partition located on the side of the second cooling area, a push-pull plate is arranged on the guide rail so as to be movable along the guide rail, and weak-current components are arranged on the push-pull plate, so that effective cooling of the weak-current components can be achieved and the weak-current components can be easily assembled, repaired or replaced separately without interfering with other components in the photovoltaic inverter.

[0025] In addition, an air inlet is formed in a portion of the bottom plate that is located on the side of the first cooling area relative to the partition, and an air outlet is formed on the side plate among the two side plates that is located on the side of the first cooling area. A fan is provided in the first cooling area. The fan is used to make air flow from the air inlet into the first cooling area and flow out of the first cooling area from the air outlet, so that the high-voltage components arranged in the first cooling area are cooled. The high-voltage components in the first cooling area can be cooled conveniently and effectively.

[0026] In addition, by adopting any of the structures described above, a modular design of the photovoltaic inverter cabinet is achieved, so that components with similar or interrelated functions can be modularly configured in partitions, which can improve the convenience of after-sales maintenance and reduce the time required to troubleshoot problems during after-sales maintenance.

[0027] In addition, by rearranging the design according to the different disassembly and assembly surfaces after actual installation and the degree of vulnerability of the components, the components with higher maintainability requirements are arranged in the most convenient maintenance space. Combined with the modular design, it is possible to replace the components inside the cabinet without disassembling the cabinet in an actual installation environment, and to perform overall modular replacement of areas with similar functions, greatly improving the convenience of cabinet maintenance.

[0028] In addition, the structure described above has strong versatility and a wide range of applications, and can achieve the technical effect of rapid adaptability development of cabinets of different sizes in different power ranges. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic three-dimensional diagram of a cabinet of a photovoltaic inverter according to an embodiment of the present application when viewed from the first cooling area side, a diagram with the front panel removed, and a diagram showing a state where a push-pull plate is pushed in.

[0030] Figure 2 It is a schematic three-dimensional diagram of a cabinet of a photovoltaic inverter according to an embodiment of the present application when viewed from the second cooling area side, a diagram with the front panel removed, and a diagram showing a state where a push-pull plate is pulled out.

[0031] Figure 3 is a schematic front view of a cabinet of a photovoltaic inverter according to an embodiment of the present application.

[0032] Figure 4 It is a schematic front view of a cabinet of a photovoltaic inverter according to an embodiment of the present application with the front panel removed.

[0033] Figure 5 is a schematic rear view of a cabinet of a photovoltaic inverter according to an embodiment of the present application.

[0034] Figure 6 This is a schematic side view of a cabinet of a photovoltaic inverter according to an embodiment of the present application, viewed from the first cooling area side.

[0035] Figure 7 This is a schematic side view of a cabinet of a photovoltaic inverter according to an embodiment of the present application, viewed from the second cooling area side.

[0036] Figure 8 1 is a schematic top view of a cabinet of a photovoltaic inverter according to an embodiment of the present application, viewed from the top plate side.

[0037] Fig. 9 It is a schematic bottom view of a cabinet of a photovoltaic inverter according to an embodiment of the present application, viewed from the bottom plate side.

[0038] Fig.10 It is a schematic exploded stereoscopic diagram of a power module cabinet arranged in a cabinet of a photovoltaic inverter according to an embodiment of the present application.

[0039] Description of reference numerals:

[0040] 1 top plate, 2 bottom plate, 3 front panel, 4 rear panel, 5 side plate, 6 partition, 7 guide rail, 8 push-pull plate, 9 power module cabinet, 901 controller box cover, 901a observation window, 902 controller box, 903 drive motherboard installation plate, 904 electromagnetic interference shielding layer, 905 power module radiator, 906 main frame, 907 capacitor removal bracket, 908 rear beam, 10 air inlet, 11 air outlet, 12 evaporator backpack, 13 circuit breaker fixing bracket, 14 reactor base, 15 inlet cover, 16 outlet cover, 17 photovoltaic wiring cover, 1001 cabinet DETAILED DESCRIPTION

[0041] The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Each aspect so defined can be combined with any other aspect or aspects, unless explicitly stated not to be combined. In particular, any feature that is considered to be preferred or advantageous can be combined with one or more other features that are considered to be preferred or advantageous.

[0042] The terms "first", "second", etc. that appear in the present disclosure are only for the convenience of description to distinguish different components with the same name, and do not indicate a sequence or a primary and secondary relationship.

[0043] Furthermore, when a component is referred to as being “on” another component, the component may be directly on the other component, or may be indirectly on the other component with one or more intermediate components interposed therebetween. Additionally, when a component is referred to as being “connected to” another component, the component may be directly connected to the other component, or may be indirectly connected to the other component with one or more intermediate components interposed therebetween. Hereinafter, the same reference numerals denote the same components.

[0044] The descriptions of directions or positional relationships indicated by “upper”, “lower”, “top”, “bottom”, “front”, “back”, “inside” and “outside” in the present disclosure are only for the convenience of describing the present disclosure, and do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present application.

[0045] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0046] Figure 1 It is a schematic three-dimensional diagram of a cabinet of a photovoltaic inverter according to an embodiment of the present application when viewed from the first cooling area side, a diagram with the front panel removed, and a diagram showing a state where a push-pull plate is pushed in. Figure 2 It is a schematic three-dimensional diagram of a cabinet of a photovoltaic inverter according to an embodiment of the present application when viewed from the second cooling area side, a diagram with the front panel removed, and a diagram showing a state where a push-pull plate is pulled out.

[0047] like Figure 1 and Figure 2 As shown, the cabinet 1001 of the photovoltaic inverter of the present application is, for example, roughly rectangular in shape. The cabinet 1001 has a top plate 1, a bottom plate 2, and two front panels 3 (see Figure 3 )、rear panel 4 (refer to Figure 5 ), and two side panels 5. The cabinet 1001 is used to accommodate various components of the photovoltaic converter (not shown in the figure) and the power module cabinet 9 therein, wherein the various components of the photovoltaic converter include but are not limited to: circuit breakers, reactors, switching power supplies, relays, overcurrent circuit breakers, filters, circuit protection devices, etc.

[0048] In the previous layout of the photovoltaic inverter cabinet, the different requirements of various devices in the photovoltaic inverter for cooling conditions were not taken into account. Therefore, there was a problem that each device could not be properly cooled according to its own needs. On the other hand, since the cabinet was not modularly arranged, even if only a few devices needed to be repaired, the entire cabinet needed to be disassembled and installed, and since devices of different functions or types were mixed, it caused instability in maintenance.

[0049] In view of the above problems existing in the cabinet of the conventional photovoltaic inverter, the cabinet 1001 according to the embodiment of the present application is provided with a partition 6, so that the internal space of the cabinet 1001 is divided into a first cooling area A and a second cooling area B by the partition 6. The partition 6 is preferably made of a heat insulating material so as to separate the first cooling area A from the second cooling area B by heat insulation.

[0050] In the first cooling area A, strong electric devices with large heat generation and high temperature resistance are arranged, such as but not limited to circuit breakers, reactors, etc. And, in the second cooling area B, weak electric devices with relatively small heat generation but weak temperature resistance and high temperature sensitivity are arranged, such as but not limited to switching power supplies, relays, overcurrent circuit breakers, filters, circuit protection devices, etc.

[0051] like Figure 1 , 2 , 6 and 9, in the part of the bottom plate 2 located on the side of the first cooling area A, an air inlet 10 composed of a grid-like grid is provided, and on the side plate 5 located on the side of the first cooling area A, an air outlet 11 composed of a grid-like grid and an outlet cover 16 are provided. In the example shown in the figure, 4 air outlets 11 are provided, but it is not limited to this, and 1 to 3 air outlets can also be provided, or more than 4 air outlets can be provided. In addition, in the first cooling area A, a fan (not shown in the figure) is provided for allowing air to flow into the first cooling area A from the air inlet 10 and for the air in the first cooling area to flow out from the air outlet 11. The fan can be provided at the air outlet 11, for example, so as to extract the air in the first cooling area A through the air outlet 11, and, by means of the negative pressure formed in the first cooling area A due to the outflow of air, the air outside the cabinet 1001 flows into the first cooling area A through the air inlet 10. Thus, the air in the first cooling area A that has been heated by the heating components of the photovoltaic inverter can be discharged from the first cooling area A, and the air at ambient temperature outside the cabinet 1001 can flow into the first cooling area A, thereby achieving air-cooling and heat dissipation of the high-voltage components arranged in the first cooling area A.

[0052] In the first cooling area A, high-power electrical components with high heat generation and high temperature resistance are arranged, and the high-power electrical components include, but are not limited to, circuit breakers, reactors, etc. Figure 1 , 2 As shown, in the first cooling area A, a circuit breaker fixing bracket 13 and a reactor base 14 are provided. Figure 1 , Figure 2 and Figure 4 As shown, the circuit breaker fixing bracket 13 is arranged on the inner side of the rear panel 4 located in the first cooling area A, and is located on the side close to the top plate 1. The circuit breaker fixing bracket 13 is used to fix and install the circuit breaker. Figure 1 , Figure 2 and Figure 4 As shown, the reactor base 14 is arranged on the upper surface of the base plate 2 located in the first cooling area A. The reactor base 14 is used to support the reactor. Among them, the circuit breaker and the reactor are strong electric devices, which generate a large amount of heat but have relatively high temperature resistance. In addition, in the embodiment of the present application, the strong electric devices arranged in the first cooling area A are not limited to the circuit breaker and the reactor, but any other strong electric devices in the photovoltaic inverter can be arranged in the first cooling area A.

[0053] Since high-voltage electrical devices such as circuit breakers and reactors generate a large amount of heat but have relatively high temperature resistance, sufficient and good heat dissipation effect can be achieved for high-voltage electrical devices through air cooling.

[0054] like Figures 5 to 9 As shown, in the portion of the rear panel 4 located on one side of the second cooling area B, an evaporator backpack 12 is arranged on the outer surface of the rear panel 4. In addition, a line cover 15 and a photovoltaic wiring cover 17 are also arranged on the rear panel 4. An evaporator and a fan are arranged in the evaporator backpack 12 (the evaporator and the fan are not shown in the figure). Thus, the evaporator and the fan can be used to form a heat dissipation interval lower than the ambient temperature in the second cooling area B. That is, by cooling with an evaporator and a fan, a cooling temperature lower than the cooling temperature of the first cooling area A is obtained in the second cooling area B. Thus, weak current devices with relatively small heat generation but weak temperature resistance and more sensitive to temperature changes can be arranged in the second cooling area B. The weak current devices include, for example, but are not limited to: switching power supplies, relays, overcurrent circuit breakers, filters, circuit protection devices and other control devices.

[0055] In addition, in the embodiment of the present application, preferably, a guide rail 7 is provided on the surface of the partition 6 located on the side of the second cooling area B, and the push-pull plate 8 is provided on the partition 6 via the guide rail 7, so that the push-pull plate 8 can move along the guide rail 7 relative to the partition 6. In addition, weak current devices such as switching power supplies, relays, overcurrent circuit breakers, filters, circuit protection devices, etc. are provided on the push-pull plate 8.

[0056] By adopting such a structure, when replacing or repairing the weak-current components arranged in the second cooling area B, these weak-current components can be easily replaced or repaired by removing the front panel 3 and pulling the partition 6 out of the cabinet 1001 along the guide rail 7.

[0057] Furthermore, if Figure 1 , Figure 2 and Figure 4 As shown, a power module cabinet 9 is provided in the second cooling area B. In the example shown in the figure, two power module cabinets 9 are provided. However, it should be understood that the present application is not limited thereto, and only one power module cabinet may be provided, or more than two power module cabinets may be provided.

[0058] Below, refer to Fig.10 The structure of the power module cabinet 9 is explained with reference to the exploded perspective view shown in FIG.

[0059] like Fig.10As shown, the power module cabinet 9 includes a controller box cover 901, a controller box 902, a drive mainboard mounting plate 903, an electromagnetic interference shielding layer, a power module radiator 905, a main frame 906, a capacitor disassembly bracket 907 and a rear beam 908. Among them, the controller box cover 901 and the controller box 902 constitute a controller module, which is used to assemble a controller mainboard mainly responsible for the converter control function. On the controller box cover 901, a transparent observation window 901a can be provided to observe the working state or error code of the controller configured in the controller box 902. A drive mainboard (not shown in the figure) is installed on the drive mainboard mounting plate 903, and an electromagnetic interference shielding layer 904 is used to shield electromagnetic interference to the drive mainboard. The drive mainboard mounting plate 903 and the electromagnetic interference shielding layer 904 constitute a drive module. The power module radiator 905, for example, includes an aluminum plate with a refrigerant passage inside. An IGBT module (insulated gate bipolar transistor module) is installed on the power module heat sink 905, and an insulating material is wrapped around the IGBT module, thereby forming a third cooling area C whose cooling temperature is lower than that of the first cooling area A and the second cooling area B. By adopting the above structure to form the third cooling area, the IGBT power module device that generates a large amount of heat and is sensitive to temperature changes can be effectively cooled. The main frame 906, the capacitor disassembly bracket 907 and the rear beam 908 constitute a capacitor module. When the main frame 906 and the capacitor disassembly bracket 907 are fixed and the rear beam 908 is disassembled, the capacitor (not shown in the figure) can be placed in the power module cabinet 9 or taken out from the power module cabinet 9 from the side. When the main frame 906 and the rear beam 908 are fixed and the capacitor disassembly bracket 907 is disassembled, the capacitor can be placed in the power module cabinet 9 or taken out from the power module cabinet 9 from the rear. Therefore, compared with the conventional photovoltaic inverter module, since the assembly direction is increased, the maintainability of the photovoltaic inverter is improved.

[0060] A specific example of the structure of the cabinet 1001 of the photovoltaic converter according to the embodiment of the present application is described above. By adopting such a structure, a first cooling area A, a second cooling area B and a third cooling area C are formed in the cabinet 1001 of the photovoltaic converter, wherein the cooling temperature of the second cooling area B is lower than the cooling temperature of the first cooling area A, and the temperature of the third cooling area C is lower than the temperature of the first cooling area A and the second cooling area B. In addition, strong electric devices such as circuit breakers and reactors with large heat generation and high temperature resistance are arranged in the first cooling area A, weak electric devices such as switching power supplies, relays, overcurrent circuit breakers, filters, circuit protection devices with relatively small heat generation but weak temperature resistance and more sensitive to temperature changes are arranged in the second cooling area B, and IGBT power module devices with large heat generation and sensitive to temperature changes are arranged in the third cooling area C. Thus, a modular layout between devices with different functions and different cooling conditions can be achieved, and devices requiring different cooling conditions can be effectively cooled at corresponding cooling temperatures. In addition, by modularizing the components of the photovoltaic inverter according to strong and weak electricity and functions, it is possible to quickly match the tools required for maintenance, improve the maintainability of the equipment, and make the maintenance or replacement of components more convenient.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A cabinet for a photovoltaic converter, the photovoltaic converter comprising strong current components and weak current components, the cabinet having a top plate, a bottom plate, a front plate, a rear plate, and two side plates, It is characterized in that The interior of the cabinet is divided into a first cooling area and a second cooling area by a partition. In the first cooling area, the high-voltage components are cooled. In the second cooling area, the weak-current component is cooled at a cooling temperature lower than the cooling temperature in the first cooling area.

2. The photovoltaic converter cabinet according to claim 1, It is characterized in that In the first cooling area, cooling is performed by air cooling. In the second cooling region, an evaporator for cooling the second cooling region is provided.

3. The photovoltaic converter cabinet according to claim 1 or 2, It is characterized in that A power module cabinet is arranged in the second cooling area, and a power module radiator is arranged in the power module cabinet, thereby forming a third cooling area whose cooling temperature is lower than that of the second cooling area.

4. The photovoltaic converter cabinet according to claim 1 or 2, It is characterized in that A guide rail is arranged on the surface of the partition plate located at the second cooling area side, a push-pull plate is arranged on the guide rail so as to be movable along the guide rail, and weak current components are arranged on the push-pull plate.

5. The photovoltaic converter cabinet according to claim 3, It is characterized in that A guide rail is arranged on the surface of the partition plate located at the second cooling area side, a push-pull plate is arranged on the guide rail so as to be movable along the guide rail, and weak current components are arranged on the push-pull plate.

6. The photovoltaic converter cabinet according to claim 1 or 2, It is characterized in that An air inlet is formed in a portion of the bottom plate that is located on the first cooling area side relative to the partition, and an air outlet is formed on the side plate of the two side plates that is located on the first cooling area side. A fan is provided in the first cooling area. The fan is used to make air flow from the air inlet into the first cooling area and flow out of the first cooling area from the air outlet, so as to cool the high-voltage components arranged in the first cooling area.

7. The photovoltaic converter cabinet according to claim 2, It is characterized in that An evaporator backpack is arranged on the rear panel, and the evaporator is arranged in the evaporator backpack.

8. The photovoltaic converter cabinet according to claim 1 or 2, It is characterized in that The partition is formed of a heat insulating material.

9. The photovoltaic converter cabinet according to claim 3, It is characterized in that A plurality of the power module cabinets are provided, and each of the power module cabinets is provided with the power module radiator, thereby forming a plurality of the third cooling areas.

10. The photovoltaic converter cabinet according to claim 9, It is characterized in that There are two power module cabinets.

11. The photovoltaic converter cabinet according to claim 3, It is characterized in that The power module radiator includes an aluminum plate with a refrigerant passage inside.

12. The photovoltaic converter cabinet according to claim 1 or 2, It is characterized in that In the first cooling area, a circuit breaker fixing bracket for fixing the circuit breaker and a reactor base for supporting the reactor are provided.

13. The photovoltaic converter cabinet according to claim 4, It is characterized in that The weak current devices arranged on the push-pull board include: one or more devices among a switching power supply, a relay, an overcurrent circuit breaker, a filter, and a circuit protection device.

14. The photovoltaic converter cabinet according to claim 1 or 2, It is characterized in that An inlet cover is arranged on the side plate located at the first cooling area side among the two side plates, and an outlet cover is arranged on the rear panel.

15. The photovoltaic converter cabinet according to claim 14, It is characterized in that A photovoltaic wiring cover is also arranged on the rear panel.

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