Immersed rectifier inverter power module cooling box

Abstract

To provide an immersion type rectifier inverter power module cooling box that can improve the temperature consistency within the cooling box and enhance the cooling effect of heat-generating elements. [Solution] The immersion type rectifier inverter power module cooling box includes a box body, a heat generating element installed in the box body, the box body filled with a coolant, the heat generating element immersed in the coolant, and the coolant circulating around the heat generating element. The box body includes a liquid cooling plate, a flow path provided in the liquid cooling plate, a cooling coil 22 installed in the box body, the cooling coil communicating with the flow path, the cooling coil immersed in the coolant, and the circulating medium in the flow path and the cooling coil is subcritical carbon dioxide.

Description

[Technical Field]

[0001] The present invention relates to the field of cooling technology, and more particularly to a cooling box for an immersion-type inverter power module. [Background technology]

[0002] Currently, most of the cooling solutions for conventional rectifier inverter power modules are air-cooled or have a single cooling plate, and these cooling technologies have many limitations.

[0003] Most of them use air cooling or conventional liquid cooling technology, but the thermal conductivity of the refrigerant is limited, making it difficult to meet the requirements for rapid heat dissipation under high-power operating conditions. This makes it easy for localized temperature accumulation to occur, leading to uneven heat dissipation and affecting the service life of electrical components. Summary of the Invention [Problem to be solved by the invention]

[0004] To solve the above technical problems, the present invention provides an immersion-type rectified inverter power module cooling box, which aims to improve the temperature consistency within the cooling box and enhance the cooling effect of heat-generating elements. [Means for solving the problem]

[0005] The present invention provides an immersion type rectifier inverter power module cooling box, which includes a box body, a heating element installed in the box body, and a cooling liquid filled in the box body, the heating element being immersed in the cooling liquid, and the cooling liquid circulating around the heating element.

[0006] The box includes a liquid-cooled plate, a flow path is provided within the liquid-cooled plate, a cooling coil is installed within the box, the cooling coil is in communication with the flow path, and the cooling coil is immersed in a cooling liquid, and the circulating medium within the flow path and the cooling coil is subcritical carbon dioxide.

[0007] In a preferred embodiment, the heating element includes an inductor, an electrolytic capacitor, and a power module.

[0008] In a preferred embodiment, the cooling coils are arranged in rows or in rows and planes.

[0009] In a preferred embodiment, the box further includes side plates, end plates and a cover plate, and the liquid-cooled plate is the bottom plate of the box.

[0010] In a preferred embodiment, a connecting head is attached to one end of the flow path, and the other end is connected to one end of a cooling coil, and the other end of the cooling coil passes through an end plate and is attached to the connecting head.

[0011] In a preferred embodiment, the ends of the first cooling coil and the cooling coil pass through end plates and are connected to connecting heads.

[0012] In a preferred embodiment, the ends of the cooling coil are sealed between the end plates of the box.

[0013] In a preferred embodiment, the coolant is a hydrocarbon-based coolant or a silicone oil. [Effects of the Invention]

[0014] Compared with the prior art, the present invention has the following technical advantages: The carbon dioxide refrigerant not only has good thermal conductivity, but also ensures that the temperatures of the carbon dioxide in the cooling coil and the bottom cooling plate are consistent during the phase change cooling process, achieving a constant temperature effect.The box is filled with immersion cooling liquid, which dissipates heat to the heat-generating electrical elements inside the box.

[0015] The large specific heat capacity of the cooling liquid allows for uniform heat dissipation from the electrical components, while the constant temperature effect of the cooling coil module and liquid-cooled plate inside the enclosure allows the cooling liquid immersed inside to dissipate heat at a constant temperature. The cooling coils are arranged in rows, columns, and planes, increasing the coil winding length three-dimensionally and increasing the heat exchange area. Furthermore, carbon dioxide is used as the cooling medium in the cooling coils, and its constant temperature characteristics in phase change cooling are utilized to maintain a constant temperature in each section of the cooling module, thereby optimizing the cooling effect of the power module and other components. [Brief explanation of the drawings]

[0016] In order to more clearly explain the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments are briefly introduced below.

[0017] Apparently, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without any creative work.

[0018] [Figure 1] 1 is a structural schematic diagram of Example 1. [Figure 2] FIG. 1 is a perspective view of the first embodiment. [Figure 3] 2. FIG. [Figure 4] 1 is a schematic structural diagram of Example 1 after the box lid has been removed. [Figure 5] 1 is a schematic diagram of the flat cooling coil structure of Example 1. [Figure 6] 1 is a schematic diagram of the row cooling coil structure of Example 1. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention clearer and easier to understand, the following provides a detailed description of specific implementations of the present invention in conjunction with the accompanying drawings of the specification.

[0020] In the following description, many specific details are set forth to provide a thorough understanding of the present invention. However, the present invention may be implemented in other ways, and those skilled in the art may make similar extensions without violating the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] As used herein, the term "one embodiment" or "embodiment" refers to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of "in one embodiment" in different places in this specification do not necessarily refer to the same embodiment, nor do they refer to an embodiment that is mutually exclusive with other embodiments, either singly or in the alternative.

[0022] Example 1 As shown in FIGS. 1 to 6, the immersion type rectifier inverter power module cooling box is composed of a box body (the bottom plate is a liquid-cooled plate), a cooling coil module, a box lid 3, a power module 4, an inductor 5, and an electrolytic capacitor 6.

[0023] The box body includes a bottom plate 11, side plates 12, and end plates 13, the bottom plate 11 being a liquid-cooled plate, the cooling coil module including a flow path 21 provided in the bottom plate 11 and a cooling coil 22 provided in the box body, the box body being filled with a cooling liquid that submerges the tops of the cooling coil 22, power module 4, inductor 5, and electrolytic capacitor 6.

[0024] Both ends of the cooling coil 22 pass through the end plate 13, one end of which is provided with a connecting head and the other end is connected to a flow path, the other end of which is also provided with a connecting head, which is used to connect the cooling coil module to a carbon dioxide circulation system and supply subcritical carbon dioxide to the cooling coil module.

[0025] Subcritical carbon dioxide flows in through the inlet of the cooling coil 22 and then flows out through the outlet of the flow path 21 in the liquid cooling plate.

[0026] The inlet and outlet connection heads are provided on the box body and fixedly connected to the box body, and a sealing ring is provided between the cooling coil 22 and the end plate 13 at the perforation part to ensure good sealing at this point and prevent breakage.

[0027] The flow path 21 and the cooling coil 22 use subcritical carbon dioxide for cooling, and absorb heat from the coolant through the principle of phase change heat absorption, while maintaining a constant temperature during the phase change process. The combination of the cooling coil and the liquid cooling plate fundamentally reduces the temperature difference caused by the heat generated by the rectifier inverter power module, thereby increasing the service life of the internal components.

[0028] The cooling coils 22 are installed in the gaps between the power modules 4 and the inductors 5, and may be arranged in rows or in rows and planes. This maximizes the space utilization rate and maximizes the heat exchange area of ​​the cooling coils, thereby effectively reducing the temperature during operation and optimizing the performance of the device.

[0029] Additionally, the structure of this patent also pays special attention to the sealing and safety of the cooling system.

[0030] The sealed connection inside the enclosure ensures that the coolant runs in a sealed environment, eliminating the risk of liquid leakage.

[0031] In practical application, this kind of design can not only withstand long-term operation under high voltage environment, but also effectively resist the interference of external environmental factors, thereby ensuring the stable operation of the rectifier inverter power module.

[0032] Carbon dioxide is used as the refrigerant, which not only has good thermal conductivity but also can match the temperature of the liquid cooling plate and the cooling coil 22 during the phase change cooling process, thereby achieving a constant temperature effect.

[0033] The box is filled with coolant, which dissipates heat from the heat-generating electrical components inside the box. The large specific heat capacity of the coolant allows the electrical components to dissipate heat evenly. At the same time, the constant temperature effect of the cooling coil module and bottom cooling plate inside the box allows the coolant immersed inside to dissipate heat constantly.

[0034] A power module and an inductor are disposed on both sides of the cooling coil 22, and an electrolytic capacitor is disposed above the power module.

[0035] The upper parts of the inductor and electrolytic capacitor are completely immersed in the coolant, which can effectively reduce the temperature during normal operation and improve their service life.

[0036] The cooling coils 22 can be arranged in various spatial combinations, such as in rows, rows, and plane interlacing, to increase the winding length of the coils three-dimensionally and increase the heat exchange area.

[0037] In addition, since the cooling medium in the cooling coil 22 is carbon dioxide, the temperature-constant characteristics of phase change cooling are utilized to maintain the temperatures of all sections of the cooling module consistent, thereby achieving the best cooling effect for the power modules and other components.

[0038] The above embodiments are intended to illustrate the technical solutions of the present invention, but are not intended to be limiting.

[0039] Although the present invention has been described in detail based on relatively preferred embodiments, those skilled in the art may make modifications or equivalent substitutions to the technical solutions of the present invention, and as long as they do not deviate from the spirit and scope of the technical solutions of the present invention, they should all be included in the scope of the claims of the present invention. [Explanation of symbols]

[0040] Bottom plate 11, side plate 12, end plate 13, first cooling coil 21, cooling coil 22, box lid 3, power module 4, inductor 5, electrolytic capacitor 6

Claims

1. An immersion type rectifier inverter power module cooling box, comprising: A heating element is installed in the box, The box is filled with a cooling liquid, The heating element is immersed in a cooling liquid, The cooling liquid circulates around the heating element, The box includes a liquid cooling plate, and a flow path is provided within the liquid cooling plate; A cooling coil is installed in the box, and the cooling coil is in communication with a flow path; the cooling coil is immersed in a cooling liquid; The circulating medium in the flow path and cooling coil is subcritical carbon dioxide. The immersion type rectifier inverter power module cooling box is characterized by the following:

2. 2. The immersion type rectifier inverter power module cooling box according to claim 1, The immersion type rectifier inverter power module cooling box, characterized in that the heat generating elements include an inductor, an electrolytic capacitor and a power module.

3. 2. The cooling box for immersed rectifier inverter power modules according to claim 1, wherein the cooling coils are arranged in a row or in a row and plane crossover arrangement.

4. the box further includes side panels, end panels, and a cover panel; 2. The immersion type rectifier inverter power module cooling box according to claim 1, wherein the liquid cooling plate is a bottom plate of the box body.

5. A connecting head is attached to one end of the flow path, and the other end is connected to one end of a cooling coil; 5. The cooling box for an immersion type inverter power module according to claim 4, wherein the other end of the cooling coil passes through an end plate and is fitted with a connecting head.

6. 2. The cooling box for an immersion type rectifier inverter power module according to claim 1, wherein the ends of the cooling coil are sealed and connected to end plates of the box body.

7. 2. The cooling box for an immersion type rectifier inverter power module according to claim 1, wherein the cooling liquid is a hydrocarbon-based cooling liquid or silicone oil.

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