A photovoltaic DC power distribution cabinet and its assembly method

Abstract

The invention discloses a photovoltaic direct current distribution cabinet and an assembly method thereof. The photovoltaic direct current distribution cabinet comprises a cabinet body, breaker assemblies, diode modules, an electrical panel assembly, a current sensor assembly and busbar assemblies, wherein the breaker assemblies, the diode modules, the electrical panel assembly and the current sensor assembly are installed on the front side of the middle inside the cabinet body, the rear side of the middle inside the cabinet body, the front side of the lower portion of the cabinet body and the front side of the lower portion of the cabinet body respectively, and the busbar assemblies are arranged in the middle of the cabinet body. The assembly method comprises the steps of installing a heat dissipation air channel system, installing the diode modules, installing the positive and negative busbar assemblies, installing the breaker assemblies, installing the electrical panel assembly and the current sensor assembly, and completing assembly. The whole photovoltaic direct current distribution cabinet is good in heat dissipation performance, simple in structure and easy to expand, manufacture and install. The cabinet body can be installed close to a wall, only the front end of the front surface of the cabinet body needs operation maintenance, use and maintenance are convenient, occupied space is reduced, the application range is expanded, and the construction and use cost is lowered for users.

Description

technical field [0001] The invention relates to the technical field of power distribution cabinets. Background technique [0002] The DC power distribution cabinet needs to realize the confluence and distribution of the output of multiple combiner boxes. Generally, it is necessary to configure anti-reverse diodes and DC switches for each input branch. Reasonable structural arrangement is very important. Some of the existing DC power distribution cabinets are unreasonably arranged in structure, which leads to complicated wiring in the cabinet and inconvenient maintenance and repair. Different customers have different requirements for the number of confluence and distribution circuits of the DC power distribution cabinet, and some customers require the DC power distribution cabinet to have the insulation monitoring function of the DC system; different customers have different requirements for the brands and specifications of the components in the DC power distribution cabinet,...

AI Technical Summary

Problems solved by technology

In the existing DC power distribution cabinets, some of the whole cabinets are unreasonably arranged, resulting in complicated wiring inside the cabinet and inconvenient maintenance and repair.

[0005] 2. Different customers have different requirements for the number of confluence and distribution circuits of the DC power distribution cabinet, and some customers require the DC power distribution cabinet to have the insulation monitoring function of the DC system; different customers have requirements for the brand and specifications of the components in the DC power distribution cabinet Different, and different brands / specifications have different component sizes

Some of the existing DC power distribution cabinets are unreasonably designed, resulting in severe heat generation and even diode bursts when the DC power distribution cabinet is used on site.

[0007] 4. Some of the existing DC power distribution cabinets need to be maintained on the back of the cabinet, and a maintenance operation door needs to be opened on the back of the DC power distribution cabinet. The requirements for on-site installation conditions are relatively high, which limits the installation and application of DC power distribution cabinets

[0012] The above existing technologies need to be further improved in terms of heat dissipation performance, structure, expansion, manufacturing and installation.

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