Three-dimensional water channel for heat dissipation of power device and DC / DC converter

Abstract

The utility model discloses a three-dimensional water channel for power device heat dissipation and a DC / DC converter, comprising a water channel body (1) and a water channel cover plate (2), the water channel cover plate (2) is installed on one side of the water channel body (1), a power device (3) is installed on the side wall of the water channel body (1) and / or the water channel cover plate (2), and a heat dissipation water channel (11), a water inlet (12) and a water outlet (13) which are transversely arranged are arranged in the water channel body (1). The heat dissipation water channel (11) is internally provided with heat dissipation fins (4), the heat dissipation fins (4) are internally provided with a plurality of heat dissipation flow channels (41), the two ends of each heat dissipation flow channel (41) are communicated with a water inlet (12) and a water outlet (13) respectively, the water inlet (12) and the water outlet (13) are internally provided with a plurality of flow guide columns (14), and the flow guide columns (14) separate water flow so that the water flow can smoothly flow into or flow out of the heat dissipation flow channels (41) of the heat dissipation fins (4). The heat exchange area is increased, the water flow is not smooth, the heat dissipation capability is greatly improved, and the device is suitable for the condition of large heat productivity of power devices.

Description

Technical Field

[0001] The utility model relates to a three-dimensional water channel for heat dissipation of power devices and a DC / DC converter. Background Art

[0002] The DC / DC converter is one of the key components in a fuel cell system. Its function is to boost the electrical energy generated by the electrochemical reaction inside the fuel cell module to the required stable voltage and provide it to electrical devices, such as power motors and batteries. In existing DC / DC converters, the power devices on the capacitor plates mostly adopt a planar heat dissipation method, that is, the power devices are laid flat on the bottom of the box, and water channels are laid flat under the plane where heat dissipation is required. However, the cooling area of ​​the coolant is also limited when laying water channels flat. As the power of DC / DC converters becomes larger and larger, in order to meet the heat dissipation requirements of the power devices on the capacitor plates, it is necessary to increase the coolant flow rate or increase the area of ​​the flat water channels. This will inevitably increase the size of the DC / DC converter, making it impossible to meet the requirements of miniaturization and integration of the DC / DC converter design.

[0003] In existing DC / DC converters, the power devices on the capacitor board are directly laid flat on the bottom surface of the housing. Cooling channels are located at the bottom of the housing. Heat generated by the power devices is transferred to the coolant through the bottom of the housing, which removes the heat, dissipating the heat from the power devices and preventing them from failing due to overheating. However, this solution requires a large amount of housing floor space, failing to achieve the design goals of integrated and miniaturized DC / DC converters. Although the applicant has proposed solutions for three-dimensional water channels, including patents CN220915626U and CN217362881U, which utilize the three-dimensional water channel concept to improve product space utilization, these solutions have a small heat exchange area within the three-dimensional water channel. Furthermore, because the water inlet and outlet are not directed, water enters the three-dimensional water channel from the inlet and initially flows along the bottom of the channel toward the outlet. As the water volume gradually increases, the inlet and outlet become blocked, preventing effective air removal. Air is trapped in the cooling channel, resulting in poor localized heat dissipation and overheating of the power devices. This structure results in insufficient heat dissipation when the power devices generate a large amount of heat. Summary of the Invention

[0004] The utility model provides a three-dimensional water channel for heat dissipation of power devices and a DC / DC converter, which are used to solve the technical problem that in the three-dimensional heat dissipation water channel assembly used in the DC / DC converter in the prior art, the heat exchange area in the three-dimensional water channel is small and the water flow is not smooth, resulting in insufficient heat dissipation capacity when the power device generates a large amount of heat.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A three-dimensional water channel for heat dissipation of power devices includes a water channel body and a water channel cover plate, the water channel cover plate is installed on one side of the water channel body, and the power devices are installed on the side walls of the water channel body and / or the water channel cover plate. The water channel body is provided with a horizontally arranged heat dissipation water channel, a water inlet and a water outlet, the water inlet and the water outlet are arranged vertically, the water inlet and the water outlet are connected to the heat dissipation water channel, heat dissipation fins are provided in the heat dissipation water channel, a plurality of heat dissipation flow channels are provided in the heat dissipation fins, and the two ends of the heat dissipation flow channel are respectively connected to the water inlet and the water outlet. It is characterized in that: a plurality of guide columns are provided in the water inlet and the water outlet, and the plurality of guide columns separate the water flow so that the water flow flows smoothly into or out of the heat dissipation flow channel of the heat dissipation fins.

[0007] Preferably, the heat dissipation fins include a plurality of partition plates arranged transversely, and a heat dissipation channel is formed between two adjacent partition plates.

[0008] Preferably, the partition plate is in the shape of a straight strip or a wavy strip.

[0009] Preferably, the heat dissipating fins are integrated with the water channel cover plate or the heat dissipating fins are integrated with the water channel body.

[0010] Preferably, an auxiliary partition plate is further provided in the heat dissipation water channel and below the heat dissipation fins. The auxiliary partition plate separates the auxiliary flow channel, and both ends of the auxiliary flow channel are respectively connected to the water inlet and the water outlet.

[0011] Preferably, raised screw mounting columns are provided on the auxiliary partition plate.

[0012] Preferably, the auxiliary partition plate is formed integrally with the waterway cover plate or with the waterway body.

[0013] Preferably, a plurality of heat dissipation blocks are arranged laterally on the auxiliary flow channel at intervals, and the heat dissipation blocks extend from the water channel cover plate or the water channel body.

[0014] A DC / DC converter includes a box assembly and a three-dimensional water channel. The three-dimensional water channel is mounted on the bottom plate of the box assembly, and a water flow channel is provided inside the bottom plate. The three-dimensional water channel is characterized in that the three-dimensional water channel adopts the three-dimensional water channel for power device heat dissipation described above, and the water flow channel is connected to the water inlet and outlet of the three-dimensional water channel.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. The three-dimensional water channel for power device heat dissipation of the present invention includes a water channel body and a water channel cover plate. The water channel cover plate is mounted on one side of the water channel body, and the power device is mounted on the side wall of the water channel body and / or the water channel cover plate. The water channel body is provided with a horizontally arranged heat dissipation water channel, a water inlet, and a water outlet. The water inlet and the water outlet are arranged vertically and are connected to the heat dissipation water channel. The heat dissipation water channel is provided with heat dissipation fins, and the heat dissipation fins are provided with a plurality of heat dissipation channels. The heat dissipation channels are connected to the water inlet and the water outlet at both ends. The utility model is characterized in that: a plurality of guide columns are provided in the water inlet and the water outlet, and the plurality of guide columns separate the water flow so that the water flows smoothly into or out of the heat dissipation channel of the heat dissipation fins. By providing a plurality of heat dissipation channels in the heat dissipation fins and a plurality of guide columns in the water inlet and the water outlet, the heat exchange area is increased, the water flow is smooth, and the heat dissipation capacity is greatly improved, which is suitable for situations where power devices generate a large amount of heat.

[0017] 2. Other advantages of the present invention are described in detail in the embodiment section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional view of a three-dimensional waterway provided by an embodiment of the utility model from one angle;

[0019] Figure 2 A three-dimensional view of the three-dimensional waterway provided by an embodiment of the present utility model from another angle;

[0020] Figure 3 A third perspective view of the three-dimensional waterway provided by an embodiment of the present utility model;

[0021] Figure 4 A bottom view of a three-dimensional waterway provided in an embodiment of the present utility model;

[0022] Figure 5 for Figure 4 AA cross-sectional view;

[0023] Figure 6 for Figure 5 BB cross-sectional view;

[0024] Figure 7 An exploded view of a three-dimensional water channel provided by an embodiment of the present utility model;

[0025] Figure 8 A three-dimensional view of the three-dimensional water channel provided by an embodiment of the utility model from another angle;

[0026] Figure 9 This is an exploded view of the DC / DC converter of the present invention. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figures 1 to 8 As shown, this embodiment provides a three-dimensional water channel for heat dissipation of power devices, including a water channel body 1 and a water channel cover 2, the water channel cover 2 is installed on one side of the water channel body 1, and the power device 3 is installed on the side wall of the water channel body 1 and / or the water channel cover 2. The water channel body 1 is provided with a horizontally arranged heat dissipation water channel 11, a water inlet 12 and a water outlet 13, the water inlet 12 and the water outlet 13 are arranged vertically, and the water inlet 12 and the water outlet 13 are connected to the heat dissipation water channel 11, and a heat dissipation fin 4 is provided in the heat dissipation water channel 11, and a plurality of heat dissipation flow channels 41 are provided in the heat dissipation fin 4, and the heat dissipation flow channels 41 are connected at both ends. The water inlet 12 and outlet are characterized by the following features: A plurality of guide posts 14 are provided within the water inlet 12 and outlet 13. These guide posts 14 divide the water flow, allowing it to flow smoothly into or out of the heat dissipation channel 41 of the heat dissipation fins 4. This embodiment optimizes the internal structure of the three-dimensional water channel. By welding the heat dissipation fins 4 within the heat dissipation channel 11, the heat exchange area is increased and the heat dissipation capacity is improved. The provision of guide posts 14 within the water inlet 12 and outlet 13 solves the problem of air being unable to escape from the three-dimensional water channel due to buoyancy, ensuring smooth water flow and significantly increasing heat dissipation capacity, making it suitable for situations where power devices generate large amounts of heat.

[0029] Preferably, the heat dissipation fins 4 include a plurality of partition plates 42 arranged transversely, and a heat dissipation channel 41 is formed between two adjacent partition plates 42 , which has a simple structure and is easy to manufacture.

[0030] Preferably, the partition plate 42 is a straight strip. Figure 7 As shown, of course, the partition plate 42 can also be in the shape of a wavy strip to increase the heat dissipation area.

[0031] Preferably, the heat dissipation fins 4 are welded to the water channel cover plate 2 or the heat dissipation fins 4 are welded to the water channel body 1, which has a simple structure and is easy to manufacture. Figure 7 The figure shows that the heat dissipation fins 4 and the water channel cover plate 2 are integrated.

[0032] Preferably, an auxiliary partition plate 15 is provided in the heat dissipation channel 11 below the heat dissipation fins 4. The auxiliary partition plate 15 separates an auxiliary flow channel 16. Both ends of the auxiliary flow channel 16 are respectively connected to the water inlet 12 and the water outlet to increase the heat dissipation area.

[0033] Preferably, a raised screw mounting post 17 is provided on the auxiliary partition plate 15 to facilitate installation.

[0034] Preferably, the auxiliary partition plate 15 is integrated with the waterway cover plate 2 or integrated with the waterway body 1, and the structure is simple.

[0035] Preferably, a plurality of heat dissipation blocks 18 are laterally arranged at intervals on the auxiliary flow channel 1 , and the heat dissipation blocks 18 extend from the water channel cover plate 2 or the water channel body 1 to increase the heat dissipation area and accelerate heat dissipation.

[0036] The waterway cover plate 2 is installed on one side of the waterway body 1 through a welding process, or a sealing ring is added between the waterway cover plate 2 and the waterway body 1.

[0037] Example 2:

[0038] like Figure 9 As shown, this embodiment provides a DC / DC converter, including a box assembly 100 and a three-dimensional water channel 200. The three-dimensional water channel 200 is installed on the bottom plate 101 of the box assembly 100. A water flow channel is set inside the bottom plate 101. It is characterized in that: the three-dimensional water channel 200 adopts the three-dimensional water channel for power device heat dissipation described in Example 1, and the water flow channel is connected to the water inlet 12 and the water outlet 13 of the three-dimensional water channel 200.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A three-dimensional water channel for heat dissipation of power devices, comprising a water channel body (1) and a water channel cover plate (2), wherein the water channel cover plate (2) is mounted on one side of the water channel body (1), and the power device (3) is mounted on the side wall of the water channel body (1) and / or the water channel cover plate (2), wherein a heat dissipation water channel (11), a water inlet (12) and a water outlet (13) are arranged in the water channel body (1), wherein the water inlet (12) and the water outlet (13) are arranged in a vertical direction, and the water inlet (12) and the water outlet (13) are connected to the heat dissipation water channel (11), a heat dissipation fin (4) is arranged in the heat dissipation water channel (11), and a plurality of heat dissipation channels (41) are arranged in the heat dissipation fin (4), and the two ends of the heat dissipation channel (41) are respectively connected to the water inlet (12) and the water outlet (13), and wherein: A plurality of guide columns (14) are provided in the water inlet (12) and the water outlet (13), and the plurality of guide columns (14) separate the water flow so that the water flow flows smoothly into or out of the heat dissipation flow channel (41) of the heat dissipation fin (4).

2. The three-dimensional water channel for heat dissipation of power devices according to claim 1, characterized in that: The heat dissipation fins (4) include a plurality of partition plates (42) arranged transversely, and a heat dissipation channel (41) is formed between two adjacent partition plates (42).

3. The three-dimensional water channel for heat dissipation of power devices according to claim 2, characterized in that: The partition plate (42) is in the shape of a straight strip or a wavy strip.

4. A three-dimensional water channel for heat dissipation of power devices according to claim 1, 2 or 3, characterized in that: The heat dissipation fins (4) and the water channel cover plate (2) are formed into one piece, or the heat dissipation fins (4) and the water channel body (1) are formed into one piece.

5. The three-dimensional water channel for heat dissipation of power devices according to claim 4, characterized in that: An auxiliary partition plate (15) is further provided in the heat dissipation water channel (11) and below the heat dissipation fins (4). The auxiliary partition plate (15) separates an auxiliary flow channel (16). Both ends of the auxiliary flow channel (16) are respectively connected to the water inlet (12) and the water outlet.

6. The three-dimensional water channel for heat dissipation of power devices according to claim 5, characterized in that: A raised screw mounting column (17) is provided on the auxiliary partition plate (15).

7. The three-dimensional water channel for heat dissipation of power devices according to claim 5, characterized in that: The auxiliary partition plate (15) is formed into one piece with the waterway cover plate (2) or formed into one piece with the waterway body (1).

8. The three-dimensional water channel for heat dissipation of power devices according to claim 7, characterized in that: A plurality of heat dissipation blocks (18) are arranged laterally on the auxiliary flow channel (16) and are distributed at intervals. The heat dissipation blocks (18) extend from the water channel cover plate (2) or the water channel body (1).

9. A DC / DC converter comprising a housing assembly (100) and a three-dimensional water channel (200), wherein the three-dimensional water channel (200) is mounted on a bottom plate (101) of the housing assembly (100), and a water flow channel is provided inside the bottom plate (101), characterized in that: The three-dimensional water channel (200) adopts the three-dimensional water channel for power device heat dissipation according to any one of claims 1 to 8, and the water flow channel is connected with the water inlet (12) and the water outlet (13) of the three-dimensional water channel (200).

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