Direct current wiring cabinet

By adopting a cyclical arrangement of terminal blocks, insulating baffles, and internal and external circulating air ducts in the DC junction box, the short circuit and arcing problems of traditional DC junction boxes in outdoor environments are solved, achieving highly safe and stable operation of power equipment.

CN223771566UActive Publication Date: 2026-01-06XIAN BORUN ELECTRIC CO LTD
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Patent Information

Application Number
CN202423060322.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2026-01-06
Estimated Expiration
2034-12-12

AI Technical Summary

Technical Problem

Traditional DC junction boxes are difficult to effectively prevent short circuits and arcing caused by internal sand accumulation in outdoor environments, and the power flow layout lacks targeted solutions, affecting the safety and stability of the equipment.

Method used

The terminal blocks are arranged in a cyclical sequence of positive-negative-negative-positive-negative-negative-positive, combined with insulating baffles, insulating sleeves, and internal and external circulating air ducts to enhance insulation and improve heat dissipation performance through an air-to-air heat exchanger, achieving an IP66 protection rating.

Benefits of technology

It significantly reduces the risk of phase-to-phase arcing, improves the safety and reliability of the equipment, enhances its stable operation in harsh environments, and reduces assembly difficulty and cost.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223771566U_ABST
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Abstract

The utility model provides a direct current wiring cabinet, which relates to the technical field of power electronic equipment, and is characterized in that a switch, a client positive electrode connector bar, a client negative electrode connector bar, an inverter positive electrode connector bar, an inverter negative electrode connector bar and a middle connecting conductor are fixed inside a direct current wiring cabinet body, and a metal baffle plate is fixed on the front side of the direct current wiring cabinet body. The handle is arranged on the switch and exposed out of the metal baffle, the client positive electrode connector bar and the client negative electrode connector bar are connected with the switch through the middle connecting conductor, and the inverter positive electrode connector bar and the inverter negative electrode connector bar are connected with the switch through the middle connecting conductor. The DC wiring cabinet provided by the utility model has remarkable effects in the aspects of structure, safety, expandability, power flow arrangement, heat dissipation performance and the like, and provides powerful support for stable operation in the field of power electronic equipment.
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Claims

1. A DC connection cabinet, characterized in that: The direct current wiring cabinet (1), switch (3), customer positive terminal wiring row (6), customer negative terminal wiring row (7), inverter positive terminal wiring row (8), inverter negative terminal wiring row (9) and intermediate connecting conductor (11) are arranged in the interior of the direct current wiring cabinet (1), the customer positive terminal wiring row (6) and customer negative terminal wiring row (7) are connected with the switch (3) through the intermediate connecting conductor (11), and the inverter positive terminal wiring row (8) and inverter negative terminal wiring row (9) are connected with the switch (3) through the intermediate connecting conductor (11).

2. A DC connection cabinet according to claim 1, characterized in that: The switch (3) is provided with a handle (5).

3. A DC connection cabinet according to claim 2, characterized in that: The front side of the direct current wiring cabinet (1) is fixedly provided with a metal baffle (4), the switch (3) is located on the inner side of the metal baffle (4), and the outer side of the handle (5) penetrates through the metal baffle (4) and is exposed on the outer side of the metal baffle (4).

4. A DC connection cabinet according to claim 1, characterized in that: The customer positive terminal wiring row (6) is provided with a direct current fuse (12).

5. A DC connection cabinet according to claim 1, characterized in that: Insulating baffles (10) are arranged between the customer positive terminal wiring row (6) and the customer negative terminal wiring row (7) and between the inverter positive terminal wiring row (8) and the inverter negative terminal wiring row (9).

6. A DC connection cabinet according to claim 1, characterized in that: The customer positive terminal wiring row (6) and customer negative terminal wiring row (7) are provided with multiple groups and are arranged in the cyclic order of positive, negative, negative, positive, negative, negative, positive and negative.

7. A DC connection cabinet according to claim 1, characterized in that: The outer side of the intermediate connecting conductor (11) is sleeved with an insulating sleeve (13).

8. A DC connection cabinet according to any of claims 1-7, characterized in that: Both sides of the direct current wiring cabinet (1) are provided with air-air heat exchangers (2), and the air-air heat exchangers (2) divide the air duct of the direct current wiring cabinet (1) into an outer circulating air duct (14) and a closed inner circulating air duct (15).