Photovoltaic combiner box with heat dissipation mechanism

By introducing heat dissipation and limiting mechanisms into the photovoltaic combiner box, the aging problem caused by concentrated heat generation of components is solved, achieving efficient heat dissipation and convenient maintenance, and ensuring the performance and safety of components.

CN224555577UActive Publication Date: 2026-07-24SHANDONG QITONG ELECTRIC CO LTD
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Patent Information

Application Number
CN202521613858.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-31
Publication Date
2026-07-24
Estimated Expiration
2035-07-31

AI Technical Summary

Technical Problem

Existing photovoltaic combiner boxes have a compact internal space, resulting in concentrated heat generation from components. High temperatures accelerate component aging and degrade performance.

Method used

A photovoltaic combiner box with a heat dissipation mechanism was designed, including a first louvered grille, heat dissipation holes, support legs, heat dissipation cover, motor-driven cooling fan, and limiting mechanism. The louvered grille and heat dissipation holes enable internal air exchange, the motor-driven fan assists in heat dissipation, and the limiting mechanism stabilizes the box door for easy maintenance.

Benefits of technology

It improves the heat dissipation efficiency of the junction box, avoids accelerated aging of components, ensures stable performance of components, and facilitates maintenance by staff.

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Abstract

The utility model relates to the technical field of photovoltaic combiner boxes, in particular to a photovoltaic combiner box with a heat dissipation mechanism, which comprises a box body comprising a combiner box body, and the surface of the combiner box body is hinged with a box door; and the heat dissipation mechanism comprises a first shutter grille, heat dissipation holes, supporting legs and a heat dissipation cover. According to the utility model, the lower surface of the combiner box body is provided with the first shutter grating, the side surface of the combiner box body is provided with the heat dissipation holes, the combiner box body is fixedly connected with the supporting legs, the supporting legs are fixedly connected with the mounting plate, the mounting plate is fixedly connected with the motor, and the motor is fixedly connected with the heat dissipation fan. The combiner box body is fixedly connected with the heat dissipation cover, the surface of the heat dissipation cover is provided with the second shutter grating, and the motor drives the heat dissipation fan to rotate to assist heat dissipation of the combiner box body and accelerate heat exchange of air in the combiner box body, so that the heat dissipation efficiency of the combiner box body is improved, and accelerated aging of components and performance reduction caused by high temperature are avoided.
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