Inverter

Abstract

The inverter provided by the utility model comprises a box body, and further comprises a heating device, a double-sided fin radiator, a first fan and a second fan which are arranged in the box body, the box body is divided into an inner bin and an outer bin which are independent and closed, the inner bin is provided with a closed accommodating chamber, the heating device is arranged in the accommodating chamber, and the first fan and the second fan are arranged in the outer bin. A double-face fin radiator is installed on the outer side of the containing cavity in the heat transfer direction of the heating device, fins at the hot end of the double-face fin radiator are arranged in the inner bin, and fins at the cold end of the other side of the double-face fin radiator are arranged in the outer bin. A first fan is arranged corresponding to the hot end of the double-sided fin radiator, and a second fan is arranged corresponding to the cold end of the double-sided fin radiator; an air inlet is formed in the side, close to the cold end of the double-face fin radiator, of the outer bin, and an air outlet is formed in the other side, away from the cold end of the double-face fin radiator, of the outer bin. The inverter provided by the utility model has efficient heat dissipation capability, optimizes air diversion, effectively reduces the temperature of the box body, and improves the reliability and stability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, specifically to an inverter that facilitates heat exchange between a sealed enclosure and the outside. Background Technology

[0002] Enclosed enclosure structures are widely used in many fields such as modern industry, electronics, and communications, with energy storage inverters being a prime example. As a key component in energy storage systems, the energy storage inverter integrates complex electronic circuits, power modules, and control systems, typically encapsulated within an enclosed enclosure. High-power operation causes the electronic components inside the energy storage inverter to generate significant amounts of heat during operation. Electronic components such as IGBT (Insulated Gate Bipolar Transistor) modules, inductors, and capacitors experience significant heat loss during high-power operation.

[0003] Traditional heat dissipation methods present numerous problems when dealing with the high-heat-generating enclosed enclosures of energy storage inverters. Simply adding ventilation holes to the enclosure severely limits its heat dissipation efficiency. Firstly, energy storage inverters have stringent environmental requirements, needing to prevent the entry of dust, moisture, and other impurities. The ventilation holes cannot be too large, otherwise, the enclosure's airtightness will be compromised, allowing impurities to easily penetrate and affecting the electrical and mechanical performance of internal electronic components. For example, dust may accumulate on the heat sinks of IGBT modules, reducing heat dissipation efficiency and potentially causing short-circuit faults due to decreased insulation performance. Moisture can cause corrosion and oxidation of components, shortening their lifespan. Secondly, relying solely on natural ventilation results in low heat exchange efficiency, failing to meet the heat dissipation needs of high-heat-generating components, leading to excessively high temperatures within the enclosure and affecting the inverter's conversion efficiency and stability.

[0004] While forced air cooling with fans can improve heat dissipation efficiency to some extent, it has significant drawbacks for energy storage inverters, which require high sealing. When using external fans to blow air into or draw air from the enclosure, it's difficult to guarantee a complete seal. Once the seal is compromised, dust, moisture, and other impurities can easily enter. Furthermore, forced air cooling may lead to uneven airflow within the enclosure, potentially causing localized overheating. Additionally, the vibrations generated by the fans during prolonged operation can damage sensitive internal electronic components, affecting the inverter's accuracy and reliability.

[0005] Furthermore, some existing advanced heat dissipation methods, such as liquid cooling systems, while highly efficient, suffer from complex structures, high costs, and demanding installation and maintenance requirements. Liquid cooling systems require specialized coolant circulation pipelines, pumps, radiators, and other components, and coolant leaks can cause irreparable damage to the electronic components inside the energy storage inverter. Moreover, the coolant in liquid cooling systems requires regular replacement and maintenance, increasing operating costs and maintenance complexity. There are also heat pipe-based heat dissipation solutions, but heat pipes have complex manufacturing processes and high costs, and their arrangement and installation within a closed enclosure are space-constrained, making them unsuitable for applications like energy storage inverters, which have specific space requirements. Therefore, there is an urgent need for an energy storage inverter that can ensure good sealing of the enclosed enclosure while efficiently, reliably, and economically achieving heat exchange with the external environment. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an inverter that ensures good sealing of the enclosed enclosure while achieving efficient, reliable and economical heat exchange with the outside.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: An inverter is provided, including a housing, and further including a heating device, a double-sided finned heat sink, a first fan and a second fan disposed in the housing. The housing is divided into an independent and closed inner chamber and an outer chamber. A sealed receiving chamber is provided in the inner chamber. The heating device is installed in the receiving chamber. The double-sided finned heat sink is installed on the outside of the receiving chamber in the heat transfer direction of the heating device. The fins of the hot end of the double-sided finned heat sink are disposed in the inner chamber, and the fins of the cold end are disposed in the outer chamber.

[0008] A first fan is provided at the hot end of the double-sided finned heat sink, and a second fan is provided at the cold end of the double-sided finned heat sink.

[0009] An air inlet is provided on the side of the outer compartment near the cold end of the double-finned heat sink, and an air outlet is provided on the other side away from the cold end of the double-finned heat sink.

[0010] Furthermore, it is preferable to install a main power radiator at the air outlet end of the second fan.

[0011] Furthermore, preferably, the length of the fins at the cold end of the double-sided finned radiator is shorter than the length of the fins at the hot end, and a gap is left between the fins at the cold end and the inner wall of the housing.

[0012] Furthermore, preferably, the ends of the fins at the cold end of the double-finned radiator do not exceed the center position of the second fan.

[0013] Furthermore, the double-sided finned heat sink preferably includes a substrate and fins disposed on both sides of the substrate, with one side fin forming a cold end housed in the outer compartment and the other side fin forming a hot end housed in the inner compartment.

[0014] Furthermore, it is preferable that the thickness of the substrate is 5-10 mm.

[0015] Furthermore, preferably, the box body is provided with a partition plate that defines the inner compartment and the outer compartment, and a sealing ring is provided at the connection between the base plate and the partition plate.

[0016] Furthermore, the substrate is preferably made of copper or aluminum.

[0017] Furthermore, the preferred material for the housing is 5052 aluminum plate.

[0018] The micro-switch adjusting wrench of this utility model has at least the following beneficial effects:

[0019] The inverter of this utility model has at least the following beneficial effects: high-efficiency heat dissipation capability. Through the double-sided finned heat sink and optimized airflow, the heat dissipation efficiency of the heat sink is significantly improved, which can better meet the heat dissipation requirements of high heat-generating components, effectively reduce the temperature of heat-generating components, and improve the reliability and stability of the equipment; the heat source (heat-generating device) inside the box is concentrated in a limited closed cavity. Through the exhaust of the first fan in the inner chamber of the box, all the hot air inside the box flows through the fins of the hot end of the double-sided finned heat sink inside the box. Through the heat conduction of the double-sided finned heat sink, the heat is carried to the fins of the cold end of the double-sided finned heat sink in the outer chamber. Then, the exhaust of the second fan in the outer chamber and the cold air flowing in from the air inlet are used to cool the fins in the outer chamber to achieve the purpose of heat transfer. The hot air flows out from the air outlet, realizing heat exchange. Attached Figure Description

[0020] 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, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the inverter in this utility model;

[0022] Figure 2 yes Figure 1 A structural diagram from another direction;

[0023] Figure 3 yes Figure 2 A magnified view of a portion of the image;

[0024] Figure 4 This is a schematic diagram of a double-finned heat sink. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] like Figures 1-4As shown, this utility model provides an inverter, including a housing 100, and further including a heating element 10, a double-finned heat sink 20, a first fan 30, and a second fan 40 disposed within the housing 100. The housing 100 is divided into an independent and enclosed inner chamber 101 and an outer chamber 102. A sealed receiving chamber 1011 is provided in the inner chamber 101, and the heating element 10 is installed in the receiving chamber 1011. The double-finned heat sink 20 is installed on the outside of the receiving chamber 1011 in the heat transfer direction of the heating element 10. The fins 22 of the hot end 221 of the double-finned heat sink 20 are disposed within the inner chamber 101. The fins 22 of the side cold end 222 are disposed inside the outer chamber 102; a first fan 30 is disposed corresponding to the hot end 221 of the double-sided finned radiator 20, and a second fan 40 is disposed corresponding to the cold end 222 of the double-sided finned radiator 20; an air inlet 1021 is disposed on the side of the outer chamber 102 near the cold end 222 of the double-sided finned radiator 20, and an air outlet 1022 is disposed on the other side away from the cold end 222 of the double-sided finned radiator 20. In other words, in this invention, the heat source (heating device 10) inside the housing 100 is concentrated in a limited, enclosed cavity 1011. The radiator is placed between the fan and the heat source. The hot air inside the housing 100 is drawn by the first fan 30 in the inner chamber 101, so that all the hot air inside the housing 100 flows through the fins 22 of the hot end 221 of the double-finned radiator 20 inside the housing 100. Through the heat conduction of the double-finned radiator 20, the heat is carried to the fins 22 of the cold end 222 of the double-finned radiator 20 in the outer chamber 102. Then, the second fan 40 in the outer chamber 102 and the cold air flowing in through the air inlet 1021 are used to cool the fins 22 of the outer chamber 102, thereby achieving the purpose of heat transfer. The hot air flows out from the air outlet 1022, realizing heat exchange and achieving the purpose of heat transfer.

[0031] In this invention, the double-finned radiator 20 has a highly efficient two-sided heat dissipation capability. Through the double-finned structure and optimized airflow, the heat dissipation efficiency of the radiator is significantly improved, which can better meet the heat dissipation requirements of high heat-generating components, effectively reduce the temperature of heat-generating components, and improve the reliability and stability of the equipment.

[0032] In some preferred embodiments, the double-finned heat sink 20 includes a substrate 21 and fins 22 disposed on both sides of the substrate 21. One side of the fins 22 forms a cold end 222 housed within the outer chamber 102, and the other side of the fins 22 forms a hot end 221 housed within the inner chamber. The substrate 21 is the core supporting part of the heat sink and is made of a metal material with high thermal conductivity, such as copper or aluminum. Its thickness is optimized according to the power of the heat sink and the application scenario, and is generally between 5-10 mm.

[0033] The double-finned radiator 20 features a compact structure. The height, density, and thickness of the fins 22 can be adjusted as needed. The fins 22 can be manufactured using either a toothed or double-sided toothed process. This double-finned structure significantly increases the heat dissipation area within a limited space, resulting in superior heat dissipation performance. Its relatively compact structure also facilitates use in space-constrained equipment. The special shape and composite metal material of the fins 22 enhance the efficiency of heat transfer within and between the fins and the air, reducing localized thermal resistance and improving heat exchange efficiency. Furthermore, it ensures more uniform and stable airflow between the fins.

[0034] In some preferred embodiments, a main power radiator 50 is provided at the air outlet of the second fan 40. The main power radiator cools the hot air drawn out by the second fan 40, which further significantly improves the heat dissipation efficiency, better meets the heat dissipation requirements of the high heat generation inverter, effectively reduces the temperature of the outer chamber 102, and improves the reliability and stability of the equipment.

[0035] In some preferred embodiments, the length of the fins 22 of the cold end 222 of the double-finned radiator 20 is shorter than the length of the fins 22 of the hot end 221. This design ensures that the fins 22 of the hot end 221 of the double-finned radiator 20 have sufficient area to conduct heat generated by the chamber 1011. The shorter fins 22 of the cold end 222 allow for a gap between the fins 22 of the cold end 222 and the inner wall of the housing 100, reducing the wind resistance of the outer chamber 102, improving the heat exchange efficiency, and also making the airflow between the fins 22 more uniform and stable.

[0036] In some preferred embodiments, the ends of the fins 22 of the cold end 222 of the double-finned radiator 20 do not exceed the center position of the second fan 40, which reduces the wind resistance of the outer chamber 102, improves the heat exchange efficiency, and also makes the air flow between the fins 22 more uniform and stable.

[0037] In some specific embodiments, the housing 100 is provided with a partition plate 103 that defines the inner compartment 101 and the outer compartment 102, and a sealing ring 23 is provided at the connection between the base plate 21 and the partition plate 103 to ensure the protection level of important areas of the inner compartment 101.

[0038] In a preferred embodiment, 5052 aluminum plate is used as the material for the enclosure 100, making full use of its high thermal conductivity. The 5052 aluminum plate not only provides good structural strength and protection for the enclosure 100, but also quickly conducts heat from inside the enclosure 100 to its surface.

[0039] The inverter of this invention also has at least the following beneficial effects: It has excellent airflow guidance, ensuring that air can enter and exit the fin structure of the double-sided finned heat sink evenly and smoothly, reducing air turbulence and backflow, further improving heat dissipation efficiency, and reducing airflow noise. It is easy to manufacture and maintain, employing mature manufacturing processes and reasonable material selection. Furthermore, cleaning and inspection operations are simple and easy to perform during maintenance, reducing operating costs.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An inverter, comprising a housing, characterized in that, It also includes a heating element, a double-finned heat sink, a first fan, and a second fan disposed within the housing, dividing the housing into an independent and enclosed inner chamber and an outer chamber. A sealed receiving chamber is provided in the inner chamber, and the heating element is installed in the receiving chamber. The double-finned heat sink is installed on the outside of the receiving chamber in the direction of heat transfer of the heating element. The fins of the hot end of the double-finned heat sink are disposed in the inner chamber, and the fins of the cold end are disposed in the outer chamber. A first fan is provided at the hot end of the double-sided finned heat sink, and a second fan is provided at the cold end of the double-sided finned heat sink. An air inlet is provided on the side of the outer compartment near the cold end of the double-finned heat sink, and an air outlet is provided on the other side away from the cold end of the double-finned heat sink.

2. The inverter according to claim 1, characterized in that, A main power radiator is installed at the air outlet of the second fan.

3. The inverter according to claim 2, characterized in that, The length of the fins at the cold end of the double-finned radiator is shorter than the length of the fins at the hot end, and there is a gap between the fins at the cold end and the inner wall of the housing.

4. The inverter according to claim 3, characterized in that, The ends of the fins at the cold end of the double-finned radiator do not exceed the center position of the second fan.

5. The inverter according to claim 1, characterized in that, The double-sided finned heat sink includes a substrate and fins disposed on both sides of the substrate. One side of the fin forms a cold end and is housed in the outer compartment, while the other side of the fin forms a hot end and is housed in the inner compartment.

6. The inverter according to claim 5, characterized in that, The thickness of the substrate is 5-10 mm.

7. The inverter according to claim 5, characterized in that, The box is provided with a partition plate that defines the inner compartment and the outer compartment, and a sealing ring is provided at the connection between the base plate and the partition plate.

8. The inverter according to claim 5, characterized in that, The substrate is made of copper or aluminum.

9. The inverter according to claim 5, characterized in that, The enclosure is made of 5052 aluminum plate.

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