Inverter heat dissipation system

Abstract

The utility model provides an inverter heat dissipation system, which relates to the technical field of power electronic heat dissipation and comprises a power heat cavity and a heat dissipation cavity from bottom to top in sequence. A first main heat exchanger, a second main heat exchanger, a first circulating water pump, a second circulating water pump, a first heat dissipation fan and a liquid cooling connecting pipeline are arranged in the heat dissipation cavity; the first main heat exchanger and the second main heat exchanger are symmetrically distributed on the left side and the right side of the top of the inverter and serve as a fixing framework of the heat dissipation cavity, the first main heat exchanger and the second main heat exchanger are in a V shape, and the first main heat exchanger, the second main heat exchanger and the peripheral sealing plates jointly form the structure of the heat dissipation cavity. Multiple beneficial effects of efficient heat dissipation, cost optimization, structure simplification and the like are realized, the competitiveness of the product is improved, and the actual demand of the market is met.

Description

Technical Field

[0001] This utility model relates to the field of power electronics heat dissipation technology, specifically an inverter heat dissipation system. Background Technology

[0002] With the continuous development of inverter technology, its power density and protection requirements are gradually increasing. This trend not only drives the enhancement of inverter performance but also brings more severe market cost pressures. In current inverter designs, the internal ambient temperature of power devices and the overall cost of the cooling system have become key factors restricting product design.

[0003] To address the heat dissipation challenges of power modules and magnetic components, many existing power devices have adopted water-cooling solutions. This approach effectively removes heat from the power modules and magnetic components by utilizing the circulating flow of a cooling medium, dissipating it into the surrounding environment through heat sinks. However, despite the excellent heat dissipation performance of water-cooling solutions, how to further reduce the internal ambient temperature of the inverter while maintaining effective heat dissipation and minimizing the cost of the cooling system remains a pressing issue for the industry.

[0004] On the one hand, as the power density of inverters increases, the heat generated by power modules and magnetic components during operation also increases, which places higher demands on the heat dissipation capacity of the cooling system. In order to effectively reduce the ambient temperature inside the inverter, a more efficient cooling system needs to be designed, but this often increases the complexity and cost of the system.

[0005] On the other hand, market cost pressures force inverter manufacturers to consider cost reduction while pursuing high performance. The cooling system, as a crucial component of the inverter, accounts for a significant proportion of the total cost. Therefore, reducing the cost of the cooling system through optimized design and the selection of low-cost materials, while ensuring effective heat dissipation, is a major challenge currently facing inverter manufacturers. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an inverter heat dissipation system that aims to reduce the cost of the heat dissipation system while ensuring heat dissipation performance through a cavity design and optimized layout of the main heat exchanger.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An inverter heat dissipation system is characterized in that: from bottom to top, it includes a power heat cavity and a heat dissipation cavity; the heat dissipation cavity is provided with a first main heat exchanger and a second main heat exchanger; the first main heat exchanger and the second main heat exchanger are symmetrically distributed on the left and right sides of the top of the inverter and serve as a fixed frame for the heat dissipation cavity; the first main heat exchanger and the second main heat exchanger are V-shaped and together with the surrounding sealing plates, they constitute the structure of the heat dissipation cavity.

[0009] Preferably, the heat dissipation cavity is further provided with a first circulating water pump, a second circulating water pump, a makeup water tank, a first cooling fan, and liquid cooling connection pipes. The first cooling fan is located at the top of the heat dissipation cavity, and air inlets are provided on the front and rear sides of the heat dissipation cavity. The first circulating water pump and the second circulating water pump are respectively located below the first main heat exchanger and the second main heat exchanger. The makeup water tank is located above the first main heat exchanger and the second main heat exchanger. The heat inside the power heat chamber is transferred to the first main heat exchanger and the second main heat exchanger inside the heat dissipation cavity through the cooling medium and the liquid cooling connection pipes.

[0010] Preferably, the first and second main heat exchangers are laid flat and installed as a whole in the middle of the heat dissipation cavity. The first heat dissipation fan is located above the first and second main heat exchangers. The water supply tank is located at the upper front of the heat dissipation cavity. The first and second circulating water pumps are located at the lower front of the heat dissipation cavity.

[0011] Preferably, a separate sealed cold cavity is provided inside the power hot cavity.

[0012] Preferably, the number of the first and second main heat exchangers, the first circulating water pump, the second circulating water pump, the first cooling fan, and the inlet and outlet of the water pipe inside the inverter are adjusted according to the power of the inverter, and the number is 1 to N.

[0013] Preferably, the pipes connecting the first and second main heat exchangers, the first circulating water pump, the second circulating water pump, the first cooling fan, and the internal inlet and outlet water pipes of the inverter are made of one or more of the following materials: rubber pipes, plastic pipes, or rigid pipes.

[0014] Preferably, the first and second main heat exchangers are vertically installed on both sides of the top of the inverter, and are not limited to a V-shaped layout or a flat layout.

[0015] Preferably, the layout of the first and second main heat exchangers is adjusted to be V-shaped and symmetrically distributed on the front and rear sides of the top of the inverter, and the air inlets of the heat dissipation cavity are located on the front and rear sides.

[0016] Preferably, the top view of the heat dissipation cavity is not limited to a square shape, but can be a square plus a triangle, a rhombus or other irregular shape.

[0017] Preferably, the first and second main heat exchangers inside the heat dissipation cavity can be arranged in an inverted V-shape, a regular V-shape, an inverted figure-eight shape, or a regular figure-eight shape.

[0018] A power electronic device comprising the aforementioned inverter cooling system.

[0019] This invention provides an inverter heat dissipation system. It has the following beneficial effects:

[0020] High-efficiency heat dissipation design: A split-cavity design separates the power heat chamber from the heat dissipation chamber, allowing for more efficient heat transfer from the power heat chamber to the heat dissipation chamber. Symmetrically distributed main heat exchangers are installed within the heat dissipation chamber, increasing the heat dissipation area and improving efficiency. A cooling fan is positioned at the top of the heat dissipation chamber, drawing air upwards towards the main heat exchangers to further enhance the cooling effect.

[0021] Cost optimization and structural simplification: The main heat exchanger not only performs heat dissipation but also serves as the main fixed framework of the heat dissipation cavity, simplifying the assembly process and reducing manufacturing costs. In different embodiments, by adjusting the layout of the main heat exchanger (such as V-shape, flat layout, etc.), costs are further optimized and heat dissipation efficiency is improved. The structural shape of the heat dissipation cavity can be adjusted as needed, and is not limited to a square shape, increasing design flexibility.

[0022] Circulating water circuit design: A circulating water pump and a makeup water tank are installed to form a complete circulating water circuit, allowing heat inside the power heat chamber to be transferred to the main heat exchanger inside the heat dissipation chamber for cooling through the cooling medium and liquid cooling pipes. This design improves heat dissipation efficiency while reducing the cost of the entire inverter cooling system.

[0023] Meeting market demand: The design of this inverter cooling system not only meets the requirements of efficient heat dissipation, but also takes into account cost optimization and structural simplification, thus meeting the market demand for low-cost, high-efficiency inverter cooling systems.

[0024] In summary, the inverter heat dissipation system proposed in this utility model achieves multiple beneficial effects, such as efficient heat dissipation, cost optimization, structural simplification, and optimized heat dissipation of heat-sensitive devices, through a series of innovative designs, thereby improving the competitiveness of the product and meeting the actual needs of the market. Attached Figure Description

[0025] Figure 1 This is a front view structural diagram of Embodiment 1 of the present utility model;

[0026] Figure 2 This is a side view of the structure of Embodiment 1 of the present invention;

[0027] Figure 3This is a front view structural diagram of Embodiment 2 of the present invention;

[0028] Figure 4 This is a side view of Embodiment 2 of the present invention.

[0029] Figure 5 This is a front view of the liquid cooling pipeline connection diagram of the heat dissipation cavity of this utility model;

[0030] Figure 6 This is a top view of the liquid cooling pipeline connection of the heat dissipation cavity of this utility model;

[0031] Figure 7 This is a schematic diagram of the air inlet and outlet of Embodiment 1 of this utility model;

[0032] Figure 8 This is a schematic diagram of the air inlet and outlet of Embodiment 2 of this utility model;

[0033] Figure 9 Here are top views of the external shapes of several heat dissipation cavity structures of this utility model;

[0034] Figure 10 This diagram illustrates several different arrangements of the main heat exchanger inside the heat dissipation cavity of this utility model.

[0035] Figure 11 This is a front view structural diagram of Embodiment 3 of the present invention;

[0036] Figure 12 This is a side view of the cavity structure in embodiment 3 of this utility model;

[0037] In the diagram: 1. Power heat chamber; 2. Heat dissipation chamber; 3. Sealed cold chamber; 8. First circulating water pump; 9. First main heat exchanger; 10. Makeup water tank; 11. Second circulating water pump; 12. Air inlet; 13. Second main heat exchanger; 16. First cooling fan. Detailed Implementation

[0038] 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.

[0039] Example 1

[0040] like Figure 1 and 2As shown, an inverter heat dissipation system adopts a compartmentalized design, comprising a power heat cavity 1 and a heat dissipation cavity 2 from bottom to top. The power heat cavity 1 contains multiple power modules, magnetic components, DC fuses, DC switches, AC switches, auxiliary transformers, and conductive busbars connecting the power circuit. The internal structure and component structure of the power heat cavity 1 are existing technologies and are therefore not shown in the figure, and will not be described in detail here.

[0041] like Figure 2 As shown, the internal structure of the heat dissipation cavity 2 is carefully designed to ensure efficient heat dissipation performance. The heat dissipation cavity 2 mainly includes the following key components: a first main heat exchanger 9 and a second main heat exchanger 13, a first circulating water pump 8, a second circulating water pump 11, a first cooling fan 16, and a makeup water tank 10.

[0042] like Figure 2 As shown, the first main heat exchanger 9 and the second main heat exchanger 13 are cleverly and symmetrically distributed on the top left and right sides of the inverter, presenting a V-shaped layout when viewed from the front of the inverter. This design effectively increases the heat dissipation area of ​​the heat exchangers, thereby improving heat dissipation efficiency.

[0043] like Figure 2 As shown, the first main heat exchanger 9 and the second main heat exchanger 13 not only bear the heavy responsibility of heat dissipation, but also serve as the main fixed frame of the heat dissipation cavity 2. They fit tightly with the sealing plates around the inverter, together forming the main structure of the heat dissipation cavity 2. This design not only simplifies the assembly process of the heat dissipation cavity 2, but also reduces manufacturing costs.

[0044] like Figure 2 and Figure 7 As shown, to further improve the heat dissipation effect, the first cooling fan 16 is arranged at the top of the heat dissipation cavity 2 and draws air upwards towards the first main heat exchanger 9 and the second main heat exchanger 13. At the same time, air inlets 12 are partially provided on the left and right sides and the front and rear sides of the heat dissipation cavity 2 to ensure that air can flow smoothly into the heat dissipation cavity 2 and exchange heat through the first main heat exchanger 9 and the second main heat exchanger 13.

[0045] like Figure 5 and Figure 6 As shown, the makeup water tank 10 is positioned slightly above and between the first main heat exchanger 9 and the second main heat exchanger 13. Its exhaust ports a and b are connected to the exhaust ports c and d of the first main heat exchanger 9 and the second main heat exchanger 13, respectively. The makeup water port e is connected to the outlets of the first circulating water pump 8 and the second circulating water pump 11 via a tee port f to ensure a continuous supply of cooling medium to the first main heat exchanger 9 and the second main heat exchanger 13.

[0046] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the first circulating water pump 8 and the second circulating water pump 11 are placed in the lower middle position between the first main heat exchanger 9 and the second main heat exchanger 13, and are fixed to the top of the inverter power heat chamber 1. The outlets g and h of the first circulating water pump 8 and the second circulating water pump 11 are connected to the inlets i and j inside the power heat chamber 1, respectively, while their inlets k and l are connected to the outlets m and n of the first main heat exchanger 9 and the second main heat exchanger 13, respectively. The inlets o and p of the first main heat exchanger 9 and the second main heat exchanger 13 are connected to the outlets q and r inside the inverter, respectively, thus forming a complete circulating water circuit.

[0047] In this circulating water circuit, the heat inside the power heat chamber 1 is transferred to the first main heat exchanger 9 and the second main heat exchanger 13 in the heat dissipation chamber 2 through the cooling medium and liquid cooling pipes for heat dissipation. This design not only improves heat dissipation efficiency but also significantly reduces the cost of the entire inverter heat dissipation system, thereby enhancing the product's competitiveness.

[0048] Example 2

[0049] like Figure 2 , Figure 3 and Figure 8 As shown, in this embodiment of the inverter heat dissipation system, the layout of the first main heat exchanger 9 and the second main heat exchanger 13 has been adjusted based on embodiment 1 to further reduce costs and improve heat dissipation efficiency.

[0050] Unlike Embodiment 1, this embodiment changes the V-shaped layout of the first main heat exchanger 9 and the second main heat exchanger 13 to a flat arrangement. The first main heat exchanger 9 and the second main heat exchanger 13 are made as a single unit and installed in the middle of the heat dissipation cavity 2, keeping it level with the top plane. This design not only simplifies the structure of the heat dissipation cavity 2, but also makes it more compact and aesthetically pleasing.

[0051] As the main fixed frame of the heat dissipation cavity 2, the adjusted first main heat exchanger 9 and second main heat exchanger 13 still fit tightly with the sealing plate around the inverter, together forming the main structure of the heat dissipation cavity 2.

[0052] The layout of the first cooling fan 16 has also been adjusted accordingly. It is placed above the first main heat exchanger 9 and the second main heat exchanger 13, and draws air upwards. At the same time, air inlets 12 are provided on the left and right sides, as well as the front and rear sides of the top cooling cavity 2 of the inverter to ensure that air can flow smoothly into the cooling cavity 2 for heat exchange.

[0053] The water supply tank 10 is placed on the upper front of the heat dissipation cavity 2, while the first circulating water pump 8 and the second circulating water pump 11 are placed on the lower front of the heat dissipation cavity 2. The connection methods of the water supply tank 10, the first circulating water pump 8, the second circulating water pump 11, the first main heat exchanger 9, the second main heat exchanger 13, and the inverter inlet and outlet water pipe interfaces are the same as in Embodiment 1.

[0054] The layout of this embodiment 2 not only reduces the cost of the entire inverter cooling system but also improves cooling efficiency. Furthermore, since the first main heat exchanger 9 and the second main heat exchanger 13 are integrated into a single unit, the assembly process of the cooling cavity 2 is simplified, reducing manufacturing costs. In summary, this design enhances product competitiveness while meeting market demands for low-cost, high-efficiency inverter cooling systems.

[0055] Example 3

[0056] like Figure 11 and 12 As shown, based on Embodiment 1, the power thermal cavity 1 can be separately equipped with a sealed cold cavity 3 for heat dissipation of some heat-sensitive devices. This greatly improves the heat dissipation efficiency of heat-sensitive devices.

[0057] like Figure 10 As shown, the first main heat exchanger 9 and the second main heat exchanger 13 are vertically mounted on both sides of the top of the inverter, and are not limited to a V-shaped layout or a flat layout. They can be configured as a regular figure-eight shape, an inverted figure-eight shape, a regular V shape, an inverted V shape, etc. The structure of the first cooling fan 16 is appropriately adjusted according to the different layouts of the first main heat exchanger 9 and the second main heat exchanger 13.

[0058] like Figure 9 As shown, the top view of the structure of the heat dissipation cavity 2 is not limited to a square shape; it can be a square plus a triangle, a rhombus, or other irregular shapes.

[0059] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inverter heat dissipation system, characterized in that: The inverter comprises a power heat chamber (1) and a heat dissipation chamber (2) from bottom to top. The heat dissipation chamber (2) is equipped with a first main heat exchanger (9) and a second main heat exchanger (13). The first main heat exchanger (9) and the second main heat exchanger (13) are symmetrically distributed on the left and right sides of the top of the inverter and serve as the fixed frame of the heat dissipation chamber (2). The first main heat exchanger (9) and the second main heat exchanger (13) are V-shaped and together with the surrounding sealing plates, they form the structure of the heat dissipation chamber (2).

2. The inverter heat dissipation system according to claim 1, characterized in that: The heat dissipation cavity (2) is also equipped with a first circulating water pump (8), a second circulating water pump (11), a water tank (10), a first heat dissipation fan (16), and a liquid cooling connection pipeline. The first heat dissipation fan (16) is located at the top of the heat dissipation cavity (2), and air inlets are provided on the front and rear sides of the heat dissipation cavity (2). The first circulating water pump (8) and the second circulating water pump (11) are located below the first main heat exchanger (9) and the second main heat exchanger (13), respectively. The water tank (10) is located above the first main heat exchanger (9) and the second main heat exchanger (13). The heat inside the power heat cavity (1) is transferred to the first main heat exchanger (9) and the second main heat exchanger (13) inside the heat dissipation cavity (2) through the cooling medium and the liquid cooling connection pipeline.

3. The inverter heat dissipation system according to claim 2, characterized in that: The first main heat exchanger (9) and the second main heat exchanger (13) are laid flat and installed in the middle of the heat dissipation cavity (2). The first heat dissipation fan (16) is located above the first main heat exchanger (9) and the second main heat exchanger (13). The water replenishment tank (10) is located on the upper front of the heat dissipation cavity (2). The first circulating water pump (8) and the second circulating water pump (11) are located on the lower front of the heat dissipation cavity (2).

4. The inverter heat dissipation system according to claim 1, characterized in that: A separate sealed cold cavity (3) is provided inside the power hot cavity (1).

5. The inverter heat dissipation system according to claim 1 or 2, characterized in that: The number of the first main heat exchanger (9) and the second main heat exchanger (13), the first circulating water pump (8), the second circulating water pump (11), the first cooling fan (16), and the inlet and outlet of the water pipe inside the inverter are adjusted according to the power of the inverter, and the number is 1 to N.

6. The inverter heat dissipation system according to claim 1 or 2, characterized in that: The materials of the first main heat exchanger (9), the second main heat exchanger (13), the first circulating water pump (8), the second circulating water pump (11), the first cooling fan (16), and the pipes connecting the inlet and outlet water pipes inside the inverter are one or more of rubber pipes, plastic pipes, or rigid pipes.

7. The inverter heat dissipation system according to claim 1 or 2, characterized in that: The first main heat exchanger (9) and the second main heat exchanger (13) are vertically installed on both sides of the top of the inverter, and are not limited to a V-shaped layout or a flat layout.

8. The inverter heat dissipation system according to claim 1, characterized in that: The layout of the first main heat exchanger (9) and the second main heat exchanger (13) is adjusted to be V-shaped and symmetrically distributed on the front and rear sides of the top of the inverter, and the air inlet of the heat dissipation cavity (2) is set on the front and rear sides.

9. The inverter heat dissipation system according to claim 1 or 2, characterized in that: The top view of the structure of the heat dissipation cavity (2) is not limited to square, but can be square plus triangle, rhombus or irregular shape.

10. The inverter heat dissipation system according to claim 1 or 2, characterized in that: The first main heat exchanger (9) and the second main heat exchanger (13) inside the heat dissipation cavity (2) can be arranged in an inverted V shape, a regular V shape, an inverted figure-eight shape, or a regular figure-eight shape.

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