Power distribution device and inversion and boost all-in-one machine

Abstract

The power distribution device comprises a power supply cabinet and a power distribution box, and the power supply cabinet and the power distribution box are independently arranged and are electrically connected through a first connecting cable. The power supply cabinet is provided with an air inlet and an air outlet which are communicated with the outside, a first heat dissipation fan is arranged in the power supply cabinet, the first heat dissipation fan can drive external airflow to enter the power supply cabinet from the air inlet for heat exchange and then flow out from the air outlet, and therefore air cooling heat dissipation of the power supply cabinet and natural cooling heat dissipation of the distribution box are achieved. According to the power distribution device disclosed by the invention, the power supply cabinet and the power distribution box are arranged into two mutually independent structures, so that different devices can be arranged in the power supply cabinet and the power distribution box respectively according to heat dissipation requirements and protection levels of the different devices, and the dustproof and heat dissipation requirements of the different devices of the power distribution device are met at the same time; therefore, under the condition that the heat dissipation performance of the power distribution device is ensured, the protection performance and the adaptability to the sand and dust environment of the power distribution device are improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic power generation technology, and more specifically, to a power distribution device and an integrated inverter and boost converter. Background Technology

[0002] Because some power distribution equipment is installed outdoors and uses direct ventilation ducts for air cooling, it faces serious dust intrusion problems, which directly affects the reliability and service life of the components inside the equipment.

[0003] Therefore, how to improve the protection performance of power distribution equipment has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a power distribution device to improve the protection performance of the power distribution device.

[0005] Another objective of this application is to provide an integrated inverter and boost converter that includes the aforementioned power distribution device.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A power distribution device, comprising:

[0008] The power cabinet is provided with an air inlet and an air outlet that are connected to the outside. A first cooling fan is provided inside the power cabinet. The first cooling fan drives the airflow from the outside to enter the power cabinet through the air inlet, exchange heat, and then flow out through the air outlet.

[0009] The power distribution box is set up relatively independently from the power cabinet and is electrically connected through a first connecting cable. The power distribution box is self-cooled.

[0010] Optionally, in the above-described power distribution equipment, the power supply cabinet includes:

[0011] The cabinet is equipped with the air inlet and the air outlet;

[0012] A first partition is disposed inside the cabinet and divides the inner cavity of the cabinet into a first chamber and a second chamber. The second chamber is connected to the air inlet and the air outlet, and the first cooling fan is disposed inside the second chamber.

[0013] Optionally, in the above-described power distribution device, the power cabinet further includes a heat exchanger, which is disposed on the first partition and in the second chamber.

[0014] Optionally, in the above-mentioned power distribution device, a second partition is provided in the first chamber, the second partition divides the first chamber into a first sub-chamber and a second sub-chamber, and the second partition is provided with an airflow passage connecting the first sub-chamber and the second sub-chamber;

[0015] The heat exchanger is provided with a heat exchange channel, and the inlet and outlet of the heat exchange channel are respectively connected to the first sub-chamber and the second sub-chamber. A second heat dissipation fan is provided in the first sub-chamber and / or the second sub-chamber.

[0016] Optionally, in the above-mentioned power distribution device, a first air guide plate is provided in the second chamber, and an air guide channel is formed between the first air guide plate and the first partition. The first end of the air guide channel extends to the air inlet and communicates with the air inlet, and the second end of the air guide channel extends to the heat exchanger.

[0017] Optionally, in the above-mentioned power distribution device, a second air guide plate is provided in the second chamber, the second air guide plate divides the second chamber into a third sub-chamber and a fourth sub-chamber, the air inlet is connected to the third sub-chamber, the air outlet is connected to the fourth sub-chamber, and the first cooling fan is provided in the third sub-chamber;

[0018] The second air guide plate has a mounting hole, and a power supply device is installed in the mounting hole. There is a first heat dissipation gap between the outer wall of the power supply device and the wall of the mounting hole and / or a second heat dissipation gap is provided on the power supply device. The first heat dissipation gap and / or the second heat dissipation gap connect the third sub-chamber and the fourth sub-chamber.

[0019] Optionally, in the above-mentioned power distribution device, a dustproof component is provided at the air inlet;

[0020] And / or, an air outlet mesh plate may be detachably installed at the air outlet.

[0021] Optionally, in the above-described power distribution device, the power distribution box includes:

[0022] The enclosure has a first wiring port and a second wiring port respectively on opposite sides;

[0023] A power distribution assembly is installed inside the enclosure. The first connecting cable passes through the first terminal and is electrically connected at both ends to the power distribution assembly and the power cabinet, respectively. The second terminal allows the second connecting cable to pass through.

[0024] An integrated inverter and boost converter includes the aforementioned power distribution device.

[0025] Optionally, the above-mentioned inverter-boost integrated machine also includes an integrated machine platform, the power cabinet is disposed on the integrated machine platform, and the distribution box is disposed on the integrated machine platform or on the power cabinet;

[0026] The all-in-one platform includes at least one of a frame box platform and an integrated platform.

[0027] The power distribution device provided in this application includes a power cabinet and a distribution box, which are independently installed and electrically connected by a first connecting cable. The power cabinet has an air inlet and an air outlet communicating with the outside environment, and a first cooling fan is installed inside the power cabinet. The first cooling fan draws external airflow into the power cabinet through the air inlet for heat exchange before it flows out through the air outlet, thus achieving air cooling for the power cabinet and natural cooling for the distribution box. Specifically, the various components of the power distribution device can be categorized according to dustproof level and heat dissipation requirements. Components with lower dustproof levels and higher heat dissipation requirements are installed in the power cabinet for air cooling by the first cooling fan; components with higher dustproof levels and lower heat dissipation requirements are installed in the distribution box for self-cooling, reducing the probability of dust from the external environment entering the distribution box and meeting the IP65 or other protection requirements of the components inside the distribution box.

[0028] Compared to existing technologies, the power distribution device provided in this application sets the power cabinet and distribution box as two independent structures. This allows different components to be installed in the power cabinet and distribution box according to their heat dissipation requirements and protection levels, thereby simultaneously meeting the dustproof and heat dissipation needs of different components in the power distribution device. This improves the protection performance and adaptability of the power distribution device in dusty environments while ensuring its heat dissipation performance. In addition, the arrangement of components in the power cabinet and distribution box does not affect each other, reducing mutual interference between wiring paths of different components, reducing the problem of messy wiring harnesses, and facilitating maintenance.

[0029] The inverter-boost integrated unit provided in this application includes the aforementioned power distribution device, and therefore also possesses the aforementioned structure and beneficial effects. Other structures can be referred to in the prior art, and will not be described in detail here. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the first inverter-boost integrated machine disclosed in the embodiments of this application. Figure 1 ;

[0032] Figure 2 This is a schematic diagram of the structure of the first inverter-boost integrated machine disclosed in the embodiments of this application. Figure 2 ;

[0033] Figure 3 This is a schematic diagram of the structure of the second type of inverter-boost integrated machine disclosed in the embodiments of this application;

[0034] Figure 4 This is a schematic diagram of the power distribution device disclosed in the embodiments of this application;

[0035] Figure 5 This is a schematic diagram of the power cabinet structure disclosed in an embodiment of this application;

[0036] Figure 6 This is a schematic diagram of the airflow direction of the power cabinet disclosed in the embodiments of this application;

[0037] Figure 7 This is a schematic diagram of the distribution box disclosed in the embodiments of this application.

[0038] Among them, 100 is the power cabinet, 101 is the air inlet, 102 is the air outlet, 103 is the second chamber, 1031 is the third sub-chamber, 1032 is the fourth sub-chamber, 104 is the first chamber, 1041 is the first sub-chamber, 1042 is the second sub-chamber, 105 is the hoisting bracket, 110 is the cabinet body, 120 is the first partition, 130 is the second partition, 131 is the airflow passage, 140 is the first air guide plate, 141 is the air guide channel, and 141a is... The first end, 141b is the second end, 150 is the second air guide plate, 151 is the mounting hole, 1511 is the first heat dissipation gap, 160 is the dustproof component, 161 is the air outlet mesh plate, 170 is the heat exchanger, 1701 is the inlet, 1702 is the outlet, 1703 is the heat exchange flow channel, 171 is the first heat dissipation fan, 180 is the uninterruptible power supply, 181 is the visualization terminal, 182 is the second heat dissipation fan, 190 is the power supply device, and 191 is the second heat dissipation gap;

[0039] 200 is the distribution box, 210 is the box body, 211 is the first wiring port, 212 is the second wiring port, 220 is the power distribution assembly, and 230 is the cable protection cover;

[0040] 300 is the inverter, 400 is the second transformer, 500 is the integrated platform, 510 is the integrated platform, 520 is the frame box platform, 600 is the first connecting cable, and 610 is the second connecting cable. Detailed Implementation

[0041] The core of this application is to disclose a power distribution device to improve the protection performance of the power distribution device.

[0042] Another key aspect of this application is the disclosure of an integrated inverter and boost converter that includes the aforementioned power distribution device.

[0043] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the utility model as described in the claims. Additionally, the complete contents of the structures represented in the embodiments below are not limited to those necessary for the solution of the utility model as described in the claims. It should be noted that, for ease of description, only the parts relevant to the utility model are shown in the drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0044] The power distribution device disclosed in this application can be a photovoltaic power distribution cabinet or other power distribution device, and this application does not limit it.

[0045] Combination Figure 4 The power distribution device disclosed in this application includes a power cabinet 100 and a distribution box 200. The power cabinet 100 and the distribution box 200 are independently arranged and electrically connected by a first connecting cable 600. The power cabinet 100 is provided with an air inlet 101 and an air outlet 102 that communicate with the outside. A first cooling fan 171 is provided inside the power cabinet 100. The first cooling fan 171 can drive the airflow from the outside into the power cabinet 100 through the air inlet 101 for heat exchange and then out through the air outlet 102, thereby realizing the air cooling of the power cabinet 100 and the natural cooling of the distribution box 200. Specifically, the various components of the power distribution device can be divided according to dustproof level and heat dissipation requirements. Components with lower dustproof level and higher heat dissipation requirements are configured in the power cabinet 100 for air cooling through the first cooling fan 171. Components with higher dustproof level and lower heat dissipation requirements are installed in the distribution box 200 for self-cooling to reduce the probability of dust from the external environment entering the distribution box 200 and meet the IP65 or other protection requirements of the components inside the distribution box 200.

[0046] Compared to existing technologies, the power distribution device disclosed in this application sets the power cabinet 100 and the distribution box 200 as two independent structures. This allows different components to be installed in the power cabinet 100 and the distribution box 200 respectively according to their heat dissipation requirements and protection levels. This simultaneously meets the dustproof and heat dissipation requirements of different components in the power distribution device, thereby improving the protection performance and adaptability of the power distribution device in dusty environments while ensuring its heat dissipation performance. In addition, the arrangement of components in the power cabinet 100 and the distribution box 200 does not affect each other, reducing mutual interference between wiring paths of different components, reducing the problem of messy wiring harnesses, and facilitating maintenance.

[0047] For example, in some embodiments, the power cabinet 100 mainly provides space for the installation, air cooling, and protection of devices such as the first transformer, uninterruptible power supply 180, and visualization terminal 181. The distribution box 200 mainly provides space for the installation, self-cooling, and protection of devices such as miniature circuit breakers, switches, and communication devices.

[0048] Combination Figure 5 and Figure 6 In a specific embodiment disclosed in this application, the power cabinet 100 includes a cabinet body 110 and a first partition 120. The cabinet body 110 is provided with an air inlet 101 and an air outlet 102. The first partition 120 is disposed inside the cabinet body 110 and divides the inner cavity of the cabinet body 110 into a first chamber 104 and a second chamber 103, and the second chamber 103 is connected to both the air inlet 101 and the air outlet 102. A first cooling fan 171 is disposed inside the second chamber 103. When the first cooling fan 171 is started, the low-temperature airflow from the external environment can enter the second chamber 103 through the air inlet 101 and directly carry away the heat of the devices in the second chamber 103, and finally flow out through the air outlet 102. At the same time, during the flow of air in the second chamber 103, it can indirectly exchange heat with the devices in the first chamber 104 through the first partition 120, thereby reducing the temperature inside the first chamber 104. Since the first chamber 104 is not directly connected to the outside, it can meet the IP65 protection requirement, thus protecting the internal components from dust. This application uses a first partition 120 to divide the inner cavity of the cabinet 110 into two independent chambers. The first chamber 104 uses a direct ventilation chamber for air cooling, while the second chamber 103 is isolated from the first chamber 104 and uses indirect air cooling. Therefore, components with relatively low heat dissipation requirements and relatively high dust protection requirements can be arranged in the first chamber 104, while components with relatively high heat dissipation requirements and relatively low dust protection requirements can be arranged in the second chamber 103.

[0049] It should be noted that the various components in the first chamber 104 and the second chamber 103 need to be electrically connected via cables. Therefore, through holes are provided on the first partition 120 for the cables to pass through. To further optimize the design, in order to prevent sand and dust from entering the first chamber 104 through the through holes and causing the components in the first chamber 104 to fail, after the cables are installed, the gap between the through holes and the cables can be sealed with adhesive substances such as silicone rubber, polyurethane, and epoxy resin to provide waterproof and dustproof protection, and at the same time, to fix the position of the cables.

[0050] Further optimize the plan, combined with Figure 5 and Figure 6The power cabinet 100 also includes a heat exchanger 170, which is disposed on the first partition 120 and within the second chamber 103. The components inside the first chamber 104 can exchange heat with the airflow in the second chamber 103 through the heat exchanger 170, ensuring effective heat exchange. The heat exchanger 170 can be of various types, including but not limited to finned heat sinks, microchannel heat exchange devices, heat spreaders, and heat pipes. In some embodiments, holes can be made in the first partition 120 so that a first side of the heat exchanger 170 can be directly disposed within the first chamber 104 and in contact with the components within the first chamber 104 for heat exchange, while the second side is disposed within the second chamber 103 and exchanges heat with the airflow within the second chamber 103, thereby improving heat exchange efficiency.

[0051] In a specific embodiment disclosed in this application, a second partition 130 is provided in the first chamber 104, which divides the first chamber 104 into a first sub-chamber 1041 and a second sub-chamber 1042. The uninterruptible power supply 180 and the visualization terminal 181 mentioned above can be respectively installed in the first sub-chamber 1041 and the second sub-chamber 1042. An airflow through hole 131 communicating with the first sub-chamber 1041 and the second sub-chamber 1042 is provided on the second partition 130. A heat exchanger 170 is provided with a heat exchange channel 1703, and the inlet 1701 and outlet 1702 of the heat exchange channel 1703 are respectively connected to the first sub-chamber 1041 and the second sub-chamber 1042. A second cooling fan 182 is provided in the first sub-chamber 1041 and / or the second sub-chamber 1042. When the second cooling fan 182 is started, the airflow in the first chamber 104 flows and circulates internally between the heat exchanger 170, the first sub-chamber 1041, and the second sub-chamber 1042 through the heat exchange channel 1703 and the airflow through hole 131. This improves the heat exchange effect between the gas in the first chamber 104 and the heat exchanger 170, optimizing the overall heat dissipation performance of the power cabinet 100. The connection cables between the uninterruptible power supply 180 and the visualization terminal 181 can pass through the airflow through hole 131 or be arranged using additional through holes.

[0052] To ensure sufficient heat exchange between the heat exchanger 170 and the airflow in the second chamber 103, combined with Figure 5 and Figure 6 A first air guide plate 140 is provided in the second chamber 103. An air guide channel 141 is formed between the first air guide plate 140 and the first partition plate 120. The first end 141a of the air guide channel 141 extends to the air inlet 101 and communicates with the air inlet 101. The second end 141b of the air guide channel 141 extends to the heat exchanger 170. This ensures that the airflow from the outside enters the second chamber 103 through the air inlet 101 and is guided by the air guide channel 141 to the heat exchanger 170, and fully exchanges heat with the heat exchanger 170, thereby ensuring the normal operation of the devices in the first chamber 104.

[0053] The second chamber 103 is mainly used to install power supply devices 190, such as the first transformer. The first transformer is used for voltage regulation. To ensure that the airflow can fully exchange heat with the power supply devices 190, a second air guide plate 150 is provided in the second chamber 103. The second air guide plate 150 divides the second chamber 103 into a third sub-chamber 1031 and a fourth sub-chamber 1032. The air inlet 101 is arranged opposite to and connected to the third sub-chamber 1031, and the air outlet 102 is arranged opposite to and connected to the fourth sub-chamber 1032. A cooling fan 171 is installed inside the third sub-chamber 1031. A mounting hole 151 is provided on the second air guide plate 150, and a power supply device 190 is installed inside the mounting hole 151. A first heat dissipation gap 1511 and / or a second heat dissipation gap 191 are provided on the outer wall of the power supply device 190 and the wall of the mounting hole 151, respectively. The first heat dissipation gap 1511 and / or the second heat dissipation gap 191 connect the third sub-chamber 1031 and the fourth sub-chamber 1032, allowing airflow to pass through. After the airflow enters the third sub-chamber 1031 through the air inlet 101, it can only pass through the first heat dissipation gap 1511 and / or the second heat dissipation gap 191 and enter the fourth sub-chamber 1032. Simultaneously, it can fully exchange heat with the power supply device 190 and remove the heat from the power supply device 190. Finally, it flows out of the cabinet 110 through the air outlet 102. The second air guide plate 150 effectively ensures the heat exchange effect of airflow on the power supply device 190, and improves the heat dissipation performance of the power cabinet 100.

[0054] A dustproof component 160, such as an air inlet louver and dustproof cotton, can be installed at the air inlet 101 to achieve a dustproof effect and reduce the probability of sand and dust affecting the components inside the power cabinet 100. Specifically, the dustproof component 160 can be detachably connected to the cabinet 110 by means of snap-fit, screw-fit, or plug-in connection to facilitate the disassembly and maintenance of the dustproof component 160. In addition, an exhaust mesh 161 is detachably installed at the air outlet 102 to facilitate the disassembly and cleaning of the exhaust mesh 161, which is used to prevent mosquitoes, small animals, etc. from entering the power cabinet 100. Specifically, the exhaust mesh 161 can be detachably connected to the cabinet 110 by means of snap-fit, screw-fit, or plug-in connection. For example, a mounting rail can be installed on the cabinet 110, and the exhaust mesh 161 can be slidably installed on the mounting rail and can be disassembled by pulling it out. Under the action of the first cooling fan 171, the low-temperature airflow in the external environment can pass through the air inlet louvers, heat exchanger 170 and air outlet mesh 161 in sequence, and carry the heat inside the cabinet 110 to the outside of the cabinet 110.

[0055] The air inlet 101 and the air outlet 102 can be set on opposite sides of the cabinet 110 so that the airflow can flow through multiple locations in the second chamber 103 as much as possible and carry away the heat of the components in the second chamber 103. Furthermore, taking the placement direction of the power distribution device during normal use as an example, the air inlet 101 and the air outlet 102 are staggered in the vertical direction to further ensure the full flow of air and heat exchange in the second chamber 103. Figure 5 The diagram shows a technical solution where the air inlet 101 is located above the air outlet 102. This structure can effectively reduce the amount of sand and dust near the ground entering the cabinet 110, thereby reducing the maintenance frequency and cost of the dustproof component 160.

[0056] In addition, combined Figure 5 A lifting bracket 105 is also provided on the cabinet 110. The lifting bracket 105 is used to facilitate the lifting of the power cabinet 100 and the movement of the power cabinet 100.

[0057] In a specific embodiment disclosed in this application, combined with Figure 7 The distribution box 200 includes a box body 210 and a power distribution component 220. The box body 210 has a first wiring port 211 and a second wiring port 212 on opposite sides. The power distribution component 220 is installed inside the box body 210. A first connecting cable 600 passes through the first wiring port 211 and its two ends are electrically connected to the power distribution component 220 and the power cabinet 100, respectively. The second wiring port 212 allows the second connecting cable 610 to pass through. The second connecting cable 610 is used to electrically connect to different devices according to the actual needs of the customer.

[0058] The power distribution assembly 220 includes low-loss power distribution and communication devices such as power distribution miniature circuit breakers, communication devices, and PCBs (Printed Circuit Boards). These devices generate relatively little heat, and natural cooling is sufficient to meet heat dissipation requirements. A cable protection cover 230 is installed on the enclosure 210 via hinges or plug-in connections. The cable protection cover 230 protects the insulation layer and internal structure of the first connecting cable 600 and / or the second connecting cable 610, while maintaining the consistency of the distribution box 200's appearance and improving the customer's product experience. The power distribution miniature circuit breakers and communication devices can be detachably installed within the enclosure 210 via rails or other structures.

[0059] Specifically, both ends of the first connecting cable 600 are sealed with waterproof terminals to prevent failure. The first connecting cable 600 includes two parts: power transmission and communication cables, which are independent and do not cross each other, ensuring that the communication of the entire machine is not interfered with. The first connecting cable 600 can be a cable provided by the power distribution device, while the second connecting cable 610 can be a cable separately configured by the user according to actual needs. This application achieves a foolproof design by placing the first wiring port 211 and the second wiring port 212 on opposite sides of the housing 210, so that the first connecting cable 600 and the second connecting cable 610 are arranged separately through different wiring ports. This reduces the probability of wiring errors by operators on site and ensures the orderliness and neatness of cable arrangement, thereby avoiding the problem of messy cables.

[0060] It should be noted that both the power cabinet 100 and the distribution box 200 of this application adopt a closable structure design with cabinet doors. However, in order to facilitate the display of their internal layout, the cabinet doors are not shown in the attached drawings. The cabinet doors can be installed on the power cabinet 100 and the distribution box 200 by means of hinges, sliding, etc.

[0061] Combination Figure 1 The inverter-boost integrated machine disclosed in this application includes the aforementioned power distribution device. The power distribution device provides power distribution and communication functions for the inverter-boost integrated machine. Since it includes the aforementioned power distribution device, it also has the aforementioned structure and beneficial effects. Other structures such as the inverter 300 and the second transformer 400 can be referred to the prior art, and will not be described in detail here.

[0062] In addition, the power distribution equipment also includes an integrated platform 500, a power cabinet 100 mounted on the integrated platform 500, and a distribution box 200 that can be mounted on the integrated platform 500, the power cabinet 100, or on structures such as the inverter 300 and the second transformer 400; combined with Figure 2 and Figure 3 The integrated platform 500 includes two types: a frame box platform 520 and an integrated platform 510. The frame box platform 520 has a frame-like structure, while the integrated platform 510 has a flat structure. The power cabinet 100 and distribution box 200 can be arranged on either the frame box platform 520 or the integrated platform 510, depending on the actual situation. Inverters 300, second transformers 400, and other structures can be directly mounted on the integrated platform 500 to simplify structural design and reduce costs. During transportation, the distribution box 200 can be installed on the power cabinet 100 using screws or other methods to prevent it from falling off.

[0063] Specifically, the power cabinet 100 is set on the all-in-one platform 500. The bottom of the power cabinet 100 may or may not have a base plate. Not having a base plate can reduce costs. The components in the second chamber 103 can be directly fixed to the all-in-one platform 500. Having a base plate can facilitate the transportation and relocation of the power cabinet 100.

[0064] The terms "first" and "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed. Additionally, in the description of embodiments in this application, "a plurality of" means two or more.

[0065] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Specific technical means in some embodiments may be incorporated, in whole or in part, into another embodiment unless explicitly excluded by another embodiment. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power distribution device, characterized by, The utility model provides a power supply cabinet and power distribution box, which are independently arranged and electrically connected through a first connecting cable. The power supply cabinet comprises: a cabinet body provided with an air inlet and an air outlet; 2. The power distribution device of claim 1, wherein, a first partition plate arranged in the cabinet body and separating an inner cavity of the cabinet body into a first chamber and a second chamber, the second chamber being in communication with the air inlet and the air outlet, and the first heat dissipation fan being arranged in the second chamber. The power supply cabinet further comprises a heat exchanger arranged on the first partition plate and in the second chamber. The first chamber is provided with a second partition plate separating the first chamber into a first sub-chamber and a second sub-chamber, the second partition plate being provided with an airflow through hole in communication with the first sub-chamber and the second sub-chamber.

3. The power distribution device of claim 2, wherein, The heat exchanger is provided with a heat exchange flow channel, and an inlet and an outlet of the heat exchange flow channel are in communication with the first sub-chamber and the second sub-chamber, respectively.

4. The power distribution device of claim 3, wherein, The second chamber is provided with a first air guide plate forming an air guide channel between the first partition plate and the first air guide plate, a first end of the air guide channel extending to the air inlet and being in communication with the air inlet, and a second end of the air guide channel extending to the heat exchanger. ​ 5. The power distribution device of claim 3, wherein, ​ 6. The power distribution device of claim 2, wherein, A second air baffle (150) is arranged in the second chamber (103), the second air baffle (150) divides the second chamber (103) into a third sub-chamber (1031) and a fourth sub-chamber (1032), the air inlet (101) communicates with the third sub-chamber (1031), the air outlet (102) communicates with the fourth sub-chamber (1032), and the first heat dissipation fan (171) is arranged in the third sub-chamber (1031); A mounting hole (151) is formed in the second air baffle (150), a power supply device (190) is arranged in the mounting hole (151), a first heat dissipation gap (1511) is formed between the outer wall of the power supply device (190) and the hole wall of the mounting hole (151), and / or a second heat dissipation gap (191) is arranged on the power supply device (190), the first heat dissipation gap (1511) and / or the second heat dissipation gap (191) communicate the third sub-chamber (1031) and the fourth sub-chamber (1032).

7. The power distribution device of claim 2, wherein, A dustproof assembly (160) is arranged at the air inlet (101); And / or, a detachable air outlet mesh plate (161) is arranged at the air outlet (102).

8. The power distribution device of any one of claims 1-7, wherein, The power distribution box (200) comprises: A box body (210), opposite sides of the box body (210) are respectively provided with a first wiring port (211) and a second wiring port (212); A power distribution assembly (220) is arranged in the box body (210), the first connecting cable (600) passes through the first wiring port (211), and both ends thereof are respectively electrically connected with the power distribution assembly (220) and the power supply cabinet (100), and the second wiring port (212) is for the second connecting cable (610) to pass through.

9. An inverter-boosting all-in-one machine, characterized by comprising: The power distribution device comprises the power distribution device according to any one of claims 1-8.

10. The integrated inverter-boost converter of claim 9, wherein, The power supply cabinet (100) is arranged on an all-in-one machine platform (500), and the power distribution box (200) is arranged on the all-in-one machine platform (500) or the power supply cabinet (100). The all-in-one machine platform (500) comprises at least one of a frame box platform (520) and an integrated platform (510). The power distribution device comprises the power distribution device according to any one of claims 1-8.

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