Heat dissipation device for power converter

Abstract

The utility model discloses a heat dissipation device for a power converter, which belongs to the technical field of heat dissipation of power converters and comprises a liquid cooling plate, heat conduction pads are arranged on two sides of the liquid cooling plate, a plurality of heating devices are arranged on the heat conduction pads, at least one double-labyrinth type liquid cooling flow channel is arranged in the liquid cooling plate, and an inlet and an outlet are respectively arranged on two sides of the double-labyrinth type liquid cooling flow channel. And fins are arranged in the double-labyrinth type liquid cooling flow channel. The heating device can directly and effectively transfer heat to the liquid cooling plate through the heat conduction pad, and the technical problems that the heat dissipation capacity of the liquid cooling plate is insufficient, temperature gathering points occur, and temperature step-by-step is uneven are solved.

Description

Technical Field

[0001] This utility model belongs to the field of heat dissipation technology for power converters, and specifically relates to a heat dissipation device for power converters. Background Technology

[0002] Power converters generate a lot of heat during use. Typical cooling mechanisms rely on airflow for heat dissipation. However, even with airflow cooling, a significant amount of heat remains inside the power converter. Excessive heat can damage the components inside the power converter and affect its lifespan.

[0003] Chinese patent CN219761739U, published on September 26, 2023, discloses a heat dissipation mechanism for a power converter, including a converter with a housing and a heat dissipation assembly inside the housing. The heat dissipation assembly includes a fixing plate with a heat dissipation shell on the fixing plate and a cooling fan inside the heat dissipation shell. A guide rod is provided inside the converter, one end of which is connected to the cooling fan. A heat-absorbing plate is also provided inside the converter, with multiple air ducts arranged in a linear array on the heat-absorbing plate. Multiple heat dissipation holes are arranged in a linear array between two air ducts. Both ends of the heat-absorbing plate are connected to opposite sides of the heat dissipation shell. However, power converters have internal components that generate a large amount of heat, and space is limited, making it difficult to dissipate the heat quickly. Due to space constraints, it is impossible to install a fan for forced air cooling; therefore, the technical solution in this patent is not applicable. Utility Model Content

[0004] To address the problems of existing technologies, this utility model provides a heat dissipation device for power converters. The heat-generating components can directly and effectively transfer heat to the liquid cooling plate through a thermal pad, thus solving the technical problems of insufficient heat dissipation capacity of the liquid cooling plate, the occurrence of temperature accumulation points, and uneven temperature distribution.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A heat dissipation device for a power converter includes a liquid cooling plate, thermal pads on both sides of the liquid cooling plate, a plurality of heat-generating devices on the thermal pads, at least one double labyrinth-shaped liquid cooling channel inside the liquid cooling plate, an inlet and an outlet on both sides of the double labyrinth-shaped liquid cooling channel, and fins inside the double labyrinth-shaped liquid cooling channel.

[0007] Preferably, the liquid cooling plate is provided with at least two double labyrinth-type liquid cooling channels.

[0008] Preferably, two double labyrinth-shaped liquid cooling channels are symmetrically arranged inside the liquid cooling plate.

[0009] Preferably, the liquid cooling plate is provided with threaded holes on both sides for mounting heat generating devices.

[0010] Preferably, the threaded holes are arranged away from the double-labyrinth liquid cooling flow channel.

[0011] Preferably, a plurality of fins are arranged in the double-labyrinth liquid cooling flow channel.

[0012] Preferably, the plurality of fins are arranged at temperature accumulation positions in the double-labyrinth liquid cooling flow channel.

[0013] Preferably, the fins are water-drop-shaped fins.

[0014] Preferably, the tips of the fins are directed in the same direction as the flow direction of the cooling liquid.

[0015] Preferably, the double-labyrinth liquid cooling flow channel has a rectangular, circular or elliptical cross section.

[0016] The beneficial effects of the technical solution are as follows:

[0017] First, the heat dissipated by the heat generating device is conducted to the liquid cooling plate through the heat-conducting pad, and the heat is carried away by the heat exchange medium in the double-labyrinth liquid cooling flow channel, thereby meeting the heat dissipation requirements of the power converter; wherein the fins arranged in the double-labyrinth liquid cooling flow channel enhance the flow capacity of the flow channel and thereby enhance the heat dissipation capacity of the liquid cooling plate, thereby improving the temperature uniformity of the liquid cooling plate.

[0018] Second, the two double-labyrinth liquid cooling flow channels are arranged symmetrically left and right in the liquid cooling plate to further improve the heat dissipation performance of the liquid cooling plate.

[0019] Third, compared with the serpentine flow channel, the double-labyrinth liquid cooling flow channel reduces the laminar flow section in the flow channel and has stronger flow capacity, and the water-drop-shaped fins are arranged in the laminar flow section and the temperature accumulation position in the double-labyrinth liquid cooling flow channel, thereby enhancing the flow capacity of the section and the heat dissipation capacity of the liquid cooling plate, and making the temperature of the liquid cooling plate more uniform.

[0020] Fourth, the threaded holes facilitate the mounting and dismounting of the heat generating devices. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the utility model;

[0022] Figure 2 is a structural schematic view of the liquid cooling plate in the utility model;

[0023] Figure 3It is the installation schematic view of the fin in the utility model;

[0024] Figure 4 It is the installation schematic view of the heating device in the utility model;

[0025] Among them: 1, liquid cooling plate;2, heat conduction pad;3, heating device;11, double-labyrinth liquid cooling flow channel;111, inlet;112, outlet;113, fin;12, threaded hole. DETAILED DESCRIPTION

[0026] The utility model will be further explained in detail in combination with examples, but the implementation mode of the utility model is not limited to this.

[0027] Example 1

[0028] As Figures 1-4 Indicated, a kind of heat sink for power converter, including liquid cooling plate 1, the heat conduction pad 2 is arranged in the two sides of the liquid cooling plate 1, multiple heating devices 3 are arranged on the heat conduction pad 2, at least 1 double-labyrinth liquid cooling flow channel 11 is arranged in the liquid cooling plate 1, inlet 111 and outlet 112 are respectively arranged in the two sides of the double-labyrinth liquid cooling flow channel 11, fin 113 is arranged in the double-labyrinth liquid cooling flow channel 11.

[0029] Example 2

[0030] A kind of heat sink for power converter, including liquid cooling plate 1, the heat conduction pad 2 is arranged in the two sides of the liquid cooling plate 1, multiple heating devices 3 are arranged on the heat conduction pad 2, at least 1 double-labyrinth liquid cooling flow channel 11 is arranged in the liquid cooling plate 1, inlet 111 and outlet 112 are respectively arranged in the two sides of the double-labyrinth liquid cooling flow channel 11, fin 113 is arranged in the double-labyrinth liquid cooling flow channel 11.

[0031] Among them, at least 2 double-labyrinth liquid cooling flow channels 11 are arranged in the liquid cooling plate 1.

[0032] Among them, 2 double-labyrinth liquid cooling flow channels 11 are symmetrically arranged in the liquid cooling plate 1.

[0033] Among them, the threaded hole 12 for installing heating device 3 is arranged on the front and back sides of the liquid cooling plate 1.

[0034] Among them, the threaded hole 12 avoids double-labyrinth liquid cooling flow channel 11 and is arranged.

[0035] Among them, multiple fins 113 are arranged in the double-labyrinth liquid cooling flow channel 11.

[0036] Wherein, the plurality of fins 113 are uniformly arranged at the temperature gathering place in the double-labyrinth liquid cooling flow channel 11. The temperature gathering place is obtained by simulation, and the determination method of the temperature gathering place is the prior art, which is not described in detail here.

[0037] Wherein, the fin 113 is a water-drop-shaped fin 113.

[0038] Wherein, the tip of the fin 113 is directed to the same direction as the flow direction of the cooling liquid.

[0039] Wherein, the cross section of the double-labyrinth liquid cooling flow channel 11 is rectangular, circular or elliptical.

[0040] The beneficial effects of the technical solution are as follows:

[0041] I. The heat dissipation device for power converter provided by the utility model, the heat generated by the heat generating device 3 is conducted to the liquid cooling plate 1 through the heat conduction pad 2, and the heat is taken away by the heat exchange medium in the double-labyrinth liquid cooling flow channel 11, so that the heat dissipation for the power converter is met. Wherein, the fins 113 are arranged in the double-labyrinth liquid cooling flow channel 11 to enhance the flow capacity of the flow channel and the heat dissipation capacity of the liquid cooling plate 1, so that the temperature uniformity of the liquid cooling plate 1 is improved.

[0042] II. The heat dissipation device for power converter provided by the utility model, the two double-labyrinth liquid cooling flow channels 11 are symmetrically arranged in the liquid cooling plate 1 to further improve the heat dissipation performance of the liquid cooling plate 1.

[0043] III. The heat dissipation device for power converter provided by the utility model, compared with the serpentine flow channel, the double-labyrinth liquid cooling flow channel 11 reduces the laminar flow section in the flow channel and has stronger flow capacity. The water-drop-shaped fins 113 are arranged in the laminar flow section and the temperature gathering place in the double-labyrinth liquid cooling flow channel 11 to enhance the flow capacity of the section and the heat dissipation capacity of the liquid cooling plate 1, so that the temperature of the liquid cooling plate 1 is more uniform.

[0044] IV. The heat dissipation device for power converter provided by the utility model, the threaded hole 12 is arranged to facilitate the mounting and dismounting of the heat generating device 3.

[0045] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification or equivalent change according to the technical essence of the utility model is within the protection scope of the utility model.

Claims

1. A heat dissipating device for power converters, characterized by: The application relates to a liquid cooling plate (1) provided with heat-conducting pads (2) on both sides, a plurality of heat-generating devices (3) arranged on the heat-conducting pads (2), at least one double-labyrinth liquid cooling flow channel (11) arranged in the liquid cooling plate (1), an inlet (111) and an outlet (112) arranged on both sides of the double-labyrinth liquid cooling flow channel (11), and fins (113) arranged in the double-labyrinth liquid cooling flow channel (11).

2. The heat sink for power converters according to claim 1, characterized in that: The liquid cooling plate (1) is provided with at least two double-labyrinth liquid cooling flow channels (11).

3. The heat sink for power converters according to claim 2, characterized in that: The two double-labyrinth liquid cooling flow channels (11) are symmetrically arranged in the liquid cooling plate (1).

4. The heat sink for power converters according to claim 3, characterized in that: The liquid cooling plate (1) is provided with threaded holes (12) for mounting the heat-generating devices (3) on both sides.

5. The heat sink for a power converter of claim 4, wherein: The threaded holes (12) are arranged away from the double-labyrinth liquid cooling flow channels (11).

6. A heat sink for a power converter as claimed in claim 5, wherein: The double-labyrinth liquid cooling flow channels (11) are provided with a plurality of fins (113).

7. A heat sink for a power converter as claimed in claim 6, wherein: The plurality of fins (113) are uniformly arranged at temperature gathering positions in the double-labyrinth liquid cooling flow channels (11).

8. A heat sink for a power converter as claimed in claim 7, wherein: The fins (113) are water-drop-shaped.

9. A heat sink for a power converter as claimed in claim 8, wherein: The tips of the fins (113) are arranged in the same direction as the flow direction of the cooling liquid.

10. The heat sink for a power converter of claim 9, wherein: The double-labyrinth liquid cooling flow channels (11) are rectangular, circular or elliptical in cross section.

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