A multi-port converter for a dc microgrid

Abstract

The utility model provides a kind of multi-port converter for direct current microgrid, including shell, shell is fixedly connected with converter main body, and the outside of converter main body is distributed with multiple first radiating fins, and the inside of shell is also fixed with the semiconductor refrigeration fin for converter main body, and the outside of semiconductor refrigeration fin is distributed with second radiating fin;Air flow adjusting assembly is also provided, and air flow adjusting assembly includes air blowing fan, and air deflector is provided on the air flow path of air blowing fan, and the air flow generated by air blowing fan is blown to first radiating fin and / or second radiating fin by air deflector;Adjusting baffle is provided at the outlet of air deflector, and adjusting baffle can make that air flow only blows to second radiating fin or simultaneously blows to first fin or second fin;Comb plate that can slide along vertical direction is provided in shell, and comb plate can act on cleaning first radiating fin and second radiating fin.Effective prevention key component local overheating, ensure that converter can stably operate under various operating conditions.

Description

Technical Field

[0001] This utility model relates to the field of converter technology, specifically a multi-port converter for DC microgrids. Background Technology

[0002] Currently, the most common heat dissipation methods for multi-port converters rely primarily on forced convection cooling using heat sinks and fans. While these traditional methods provide some cooling, they still face significant limitations in practical applications. For example, most existing designs struggle to dynamically adjust their cooling strategies based on the varying heat loads of different components within the converter (such as the main power module or potentially a semiconductor cooling module). This means that under certain light load or low-temperature conditions, a fixed cooling scheme may lead to overcooling, resulting in unnecessary energy waste; conversely, under other high load or high-temperature conditions, the cooling capacity may be insufficient, causing localized overheating of critical components and impacting system stability and reliability. Furthermore, the airflow paths of traditional fans are often preset and fixed, lacking flexibility and making it difficult to precisely direct cooling airflow to the areas most in need of heat dissipation. This fixed airflow distribution significantly limits the improvement of overall heat dissipation efficiency. Therefore, these existing shortcomings, to some extent, restrict the reliability and adaptability of multi-port converters in complex practical applications. Utility Model Content

[0003] The present invention aims to overcome the shortcomings of the prior art and provide a multi-port converter for DC microgrids. Its purpose is to solve the problems of fixed heat dissipation strategies, inability to dynamically adjust according to load, low heat dissipation efficiency, and easy dust accumulation on fins that are difficult to clean in existing converters.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A multi-port converter for DC microgrids includes a housing. A converter body is fixedly connected inside the housing, and multiple first heat dissipation fins are distributed on the outer side of the converter body. A thermoelectric cooler acting on the converter body is also fixed inside the housing, and second heat dissipation fins are distributed on the outer side (i.e., the hot end) of the thermoelectric cooler.

[0005] This invention also includes an airflow adjustment component, which comprises at least one air-blowing fan. An air guide shroud is provided along the airflow path of the air-blowing fan, and the airflow generated by the air-blowing fan passes through the air guide shroud and is directed towards the first heat dissipation fin and / or the second heat dissipation fin.

[0006] The key feature is that an adjustment baffle is provided at the outlet of the air guide shroud. Through structural changes, the adjustment baffle can achieve three or more airflow distribution modes, such as blowing air only towards the second heat dissipation fin, or blowing air towards both the first and second heat dissipation fins at the same time, thereby accurately distributing the cooling airflow according to the heat load requirements of different modules.

[0007] In addition, the housing is provided with a comb plate that can slide vertically. The comb teeth of the comb plate are inserted into the gap between the first heat dissipation fin and the second heat dissipation fin, and can clean the fins through reciprocating motion.

[0008] As a preferred implementation: The adjusting baffle includes a sliding plate that can rotate around an axis and a fixed baffle that is fixedly connected to the air guide shroud. Multiple slidably retractable plates are disposed between the sliding plate and the fixed baffle. The sliding plate has an arc-shaped groove corresponding to the retractable plates, and the retractable plates have guide pins that slide in conjunction with the arc-shaped grooves. When the sliding plate is rotated, the guide pins move along the arc-shaped grooves, causing the retractable plates to extend or retract, thereby changing the opening and closing state of the airflow channel.

[0009] As a further preferred embodiment: The sliding plate has an arc-shaped protrusion, and the comb plate has a contact portion that mates with the arc-shaped protrusion. When the sliding plate moves in a circular motion, the arc-shaped protrusion pushes the contact portion, causing the comb plate to shift vertically. After the arc-shaped protrusion rotates through a specific angle, it separates from the contact portion, and the comb plate returns to its original position under the action of the reset mechanism, thus achieving one complete reciprocating cleaning motion. This cleverly links the airflow adjustment action with the fin cleaning action.

[0010] As a further preferred embodiment: The outer casing has a limiting groove, and the comb plate is slidably connected to the limiting groove to ensure stable vertical movement. A return spring is provided in the limiting groove to act on the comb plate, so as to automatically reset it after the cleaning action is completed.

[0011] As a further preferred embodiment: The comb plate includes multiple parallel cleaning comb strips, each with flexible bristles extending to both sides to prevent damage to the heat dissipation fins during cleaning.

[0012] As a further preferred embodiment: The number of air-blowing fans is two, arranged side by side, to provide a stronger and more even airflow.

[0013] Compared with the prior art, the present invention has the following significant advantages: 1. Enhanced heat dissipation and performance assurance for critical components: By setting adjustable baffles, all cooling airflow can be concentrated and directed to the second heat dissipation fins when the semiconductor cooling module is operating at full load and generating enormous heat. This concentrated heat dissipation mode can effectively suppress the temperature rise of critical components, ensuring their performance and reliability under extreme operating conditions, which is impossible to achieve with traditional fixed heat dissipation.

[0014] 2. Improve system reliability: Precise airflow distribution can effectively prevent local overheating of key components, ensuring that the converter can operate stably under various operating conditions, thus extending the service life and reliability of the equipment.

[0015] 3. Convenient automatic cleaning and maintenance: The airflow adjustment action is cleverly linked with the cleaning action of the comb plate. Every time the airflow mode is adjusted, the heat dissipation fins are automatically cleaned, maintaining the high efficiency of heat dissipation performance of the fins for a long time and greatly reducing the frequency and difficulty of manual maintenance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural cross-sectional view of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the adjustment baffle according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Outer shell; 11. Limiting groove; 12. Return spring.

[0019] 2. Converter body; 21. First heat sink fin; 3. Semiconductor cooling chip; 31. Second heat dissipation fin; 4. Airflow adjustment assembly; 41. Air blowing fan; 42. Air guide cover; 43. Adjustment baffle; 431. Sliding plate; 4311. Arc protrusion; 432. Fixed baffle; 433. Shrink plate; 434. Guide pin; 435. Arc groove; 5. Comb teeth; 51. Cleaning comb bar; 52. Comb hair; 53. Abutment part; 54. Return spring. Detailed Implementation

[0020] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0021] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1 to 3 This invention provides a multi-port converter for DC microgrids. It includes a housing 1, inside which a core converter body 2 and a thermoelectric cooler 3 for precise temperature control are installed. The converter body 2 generates a large amount of heat during operation, and multiple first heat dissipation fins 21 are tightly attached to its outer side. When the thermoelectric cooler 3 is working, its hot end also generates heat, and this hot end is connected to multiple second heat dissipation fins 31.

[0023] To effectively dissipate heat from these two independent heat sources, this invention includes an airflow adjustment assembly 4. This assembly comprises two parallel air-blowing fans 41, mounted at one end of the housing 1. The airflow generated by the fans 41 is collected in an air guide shroud 42, the outlet of which faces the first heat dissipation fin 21 and the second heat dissipation fin 31.

[0024] The adjusting baffle 43 includes a fixed baffle 432 fixed to the air guide shroud 42 and a rotatable sliding baffle 431. Between them, there are multiple slidable contraction baffles 433. The sliding baffle 431 has an arc-shaped groove 435, and each contraction baffle 433 has a guide pin 434 that engages with the corresponding arc-shaped groove 435.

[0025] Work mode adjustment: Mode 1 (Centralized Cooling of the Semiconductor Cooling Module): This mode is suitable for situations where the semiconductor cooling chip 3 operates at full load, generating a large amount of heat instantaneously or continuously, while the main converter body 2 is under light load. In this mode, the operator or control system can rotate the sliding plate 431 to the first position. In this position, the retractable plate 433 extends and blocks the airflow channel to the first heat sink fin 21. Therefore, all the cooling airflow generated by the fan 41 is forced to flow to the second heat sink fin 31. This concentrates all cooling resources here, providing rapid and efficient localized cooling to the critical components of the converter body 2.

[0026] Mode 2 (Dual-path Parallel Cooling): This mode is suitable when both the converter body 2 and the semiconductor cooling chip 3 are operating under medium load and require comprehensive heat dissipation to ensure the stability of the entire system. In this mode, the sliding plate 431 can be rotated to the second position. In this position, the retractable plate 433 retracts, thereby simultaneously opening airflow channels to the first heat dissipation fin 21 and the second heat dissipation fin 31, achieving parallel cooling of the two heat sources.

[0027] Another core innovation of this utility model is its self-cleaning function. For example... Figure 1 and Figure 2 As shown, a comb plate 5 that can slide vertically is provided inside the outer casing 1. The comb plate 5 is composed of multiple cleaning comb strips 51, with bristles 52 extending to both sides on the comb strips. These comb strips and bristles are interspersed in the gaps between the first and second heat dissipation fins 21 and 31.

[0028] Cleaning actions are linked: like Figure 3 As shown, the edge of the sliding plate 431 is provided with an arc-shaped protrusion 4311. The upper end of the comb plate 5 is provided with a corresponding abutment part 53. When the operator or the motor rotates the sliding plate 431 to switch the heat dissipation mode, the arc-shaped protrusion 4311 will rotate accordingly and push against the abutment part 53, forcing the comb plate 5 to overcome the elastic force of the return spring 54 and slide downward along the limiting groove 11 on the outer shell 1. During this process, the bristles 52 will scrape the gaps between the fins and remove the attached dust. After the arc-shaped protrusion 4311 rotates past the abutment part 53, the pushing force disappears, and the comb plate 5 quickly springs back to the initial position under the action of the return spring 54, completing a complete reciprocating cleaning action.

[0029] Therefore, each time the cooling mode is adjusted, the cooling fins are automatically cleaned, ensuring that the cooling system is always in optimal working condition without any additional manual intervention.

[0030] In summary, this utility model, through its ingenious mechanical linkage design, combines dynamically adjustable airflow distribution with automatic dust removal, effectively solving the problems of rigid heat dissipation strategies, insufficient thermal response to key components, and difficult maintenance in existing multi-port converters.

[0031] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A multi-port converter for DC microgrids, comprising a housing, characterized in that; The outer casing is fixedly connected to the converter body. Multiple first heat dissipation fins are distributed on the outer side of the converter body. A semiconductor cooling chip that acts on the converter body is also fixed inside the outer casing. Second heat dissipation fins are distributed on the outer side of the semiconductor cooling chip. An airflow adjustment component is also provided, which includes a blowing fan and a guide shroud is provided on the airflow path of the blowing fan. The airflow generated by the blowing fan blows towards the first heat dissipation fin and / or the second heat dissipation fin through the guide shroud. An adjustment baffle is provided at the outlet of the air guide shroud; The housing is provided with a comb plate that can slide vertically, and the comb plate can be used to clean the first heat dissipation fins and the second heat dissipation fins.

2. The multi-port converter for DC microgrids according to claim 1, characterized in that, The adjusting baffle includes a rotatable sliding plate and a fixed baffle fixedly connected to the air guide shroud. Multiple slidably retractable plates are provided between the sliding plate and the fixed baffle. The sliding plate is provided with an arc-shaped groove corresponding to the retractable plate, and the retractable plate is provided with a guide pin that cooperates with the arc-shaped groove.

3. A multi-port converter for DC microgrids according to claim 2, characterized in that, The sliding plate is provided with an arc protrusion, and the comb plate is provided with an abutment part that mates with the arc protrusion; When the sliding plate performs circular motion, it causes the comb plate to reciprocate in the vertical direction.

4. A multi-port converter for DC microgrids according to claim 1, characterized in that, A limiting groove is provided on the outer shell, the comb plate is slidably connected to the limiting groove, and a return spring acting on the comb plate is provided in the limiting groove.

5. A multi-port converter for DC microgrids according to claim 1, characterized in that, The comb plate includes multiple cleaning comb strips, and the cleaning comb strips are provided with bristles extending to both sides.

6. A multi-port converter for DC microgrids according to claim 1, characterized in that, The number of air blowing fans is 2.

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