A double-sided high-power thyristor liquid-cooled heat sink

Abstract

This application discloses a double-sided high-power thyristor liquid-cooled heat sink, including a heat sink body with a liquid-cooling channel inside. The liquid-cooling channel has an eyelet-type structure and has an inlet and an outlet. The inlet is located at the center of the liquid-cooling channel, and the outlet is located at the edge of the liquid-cooling channel. Thus, the cooling liquid enters the liquid-cooling channel through the inlet and diffuses in all directions through the eyelet-type structure, increasing the contact area between the cooling liquid and the heat sink body. The liquid-cooling channel consists of multiple flow paths evenly arranged circumferentially, and also includes multiple flow-dividing sections corresponding to the multiple flow paths. Thus, the cooling liquid enters the liquid-cooling channel and is diverted by the multiple flow paths, and then diffuses in all directions. After leaving the flow paths, it is further diverted by the flow-dividing sections, further increasing the contact area with the heat sink body and effectively improving the heat dissipation efficiency, thus meeting the thermal resistance requirements of the double-sided high-power thyristor.

Description

Technical Field

[0001] This disclosure relates to the field of electronic power equipment technology, specifically to a double-sided high-power thyristor liquid-cooled heat sink. Background Technology

[0002] In DC power transmission projects, the converter valve is a core piece of equipment. It connects the three-phase AC voltage to the DC terminal in sequence to obtain the desired DC voltage and control the power. The converter valve contains components such as thyristors, capacitors, and resistors, with the thyristor being the core component, determining the flow capacity of the converter valve.

[0003] Therefore, in the rapidly developing power electronics industry, as the flow capacity of converter valves increases, the heat generation power of thyristors also increases, leading to higher requirements for the thermal resistance and flow resistance of water-cooled heat sinks. In practical applications, heat sinks must dissipate heat, withstand pressure, and conduct electricity; therefore, improving the heat dissipation capacity of thyristor heat sinks without affecting other requirements is of paramount importance.

[0004] To address this, we propose a double-sided high-power thyristor liquid-cooled heat sink. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a double-sided high-power thyristor liquid-cooled heat sink.

[0006] In a first aspect, this application provides a double-sided high-power thyristor liquid-cooled heat sink, comprising:

[0007] The radiator body has a liquid cooling channel inside. The liquid cooling channel has an eyelet-type structure and has a liquid inlet and an outlet. The liquid inlet is located at the center of the liquid cooling channel, and the liquid outlet is located at the edge of the liquid cooling channel.

[0008] According to the technical solution provided in the embodiments of this application, the liquid cooling channel is composed of multiple flow paths evenly arranged in the circumference, and adjacent flow paths are separated by partition walls, which are continuous wave-shaped structures.

[0009] According to the technical solution provided in the embodiments of this application, the liquid cooling channel further includes multiple groups of diversion sections, each group of diversion sections being arranged corresponding to multiple partition walls and located at the end of the partition wall away from the liquid inlet.

[0010] According to the technical solution provided in the embodiments of this application, the diversion section includes a plurality of contact columns, which are arranged along the extension direction of the partition wall, and the cross-sectional shape of the contact columns is teardrop-shaped.

[0011] According to the technical solution provided in the embodiments of this application, the radiator body includes a main body, and a first cover and a second cover are respectively fixedly disposed on two opposite side walls of the main body. The first cover and the second cover are each provided with a liquid cooling channel on the side wall near the main body, and the two liquid cooling channels are symmetrically arranged.

[0012] According to the technical solution provided in the embodiments of this application, an injection port is provided on the side wall of the main body, and an injection channel is provided inside the main body. The injection channel includes a first injection channel, one end of which is connected to the injection port, and the other end of which is connected to a second injection channel.

[0013] According to the technical solution provided in the embodiments of this application, a branch channel is provided through the center of the main body, and the two ends of the branch channel are respectively connected to the liquid inlets of the two liquid cooling channels. The end of the second liquid injection channel away from the first liquid injection channel is connected to the branch channel.

[0014] According to the technical solution provided in the embodiments of this application, the main body is further provided with a manifold, and the two ends of the manifold are respectively connected to the liquid outlets of two liquid cooling channels.

[0015] According to the technical solution provided in the embodiments of this application, a drain outlet is also provided on the side wall of the main body, and a drain channel is also provided inside the main body. One end of the drain channel is connected to the confluence channel, and the other end is connected to the drain outlet.

[0016] In summary, this technical solution specifically discloses a double-sided high-power thyristor liquid-cooled heat sink, including a heat sink body, and a liquid cooling channel is provided inside the heat sink body. The liquid cooling channel has an eye-shaped structure and has a liquid inlet and a liquid outlet. The liquid inlet is located at the center of the liquid cooling channel, and the liquid outlet is located at the edge of the liquid cooling channel.

[0017] Thus, the coolant enters the liquid cooling channel through the inlet, and through the vent-shaped liquid cooling channel, the coolant spreads to all sides, increasing the contact area between the coolant and the radiator body.

[0018] The liquid cooling channel consists of multiple flow paths evenly arranged in the circumference. The liquid cooling channel also includes multiple flow distribution sections corresponding to the multiple flow paths. As a result, the cooling liquid enters the liquid cooling channel and is divided by multiple flow paths, and then rotates and diffuses in all directions. After leaving the flow path, it is further divided by the flow distribution section, which further increases the contact area with the heat sink body, effectively improving the heat dissipation efficiency and meeting the thermal resistance requirements of double-sided high-power thyristors. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of a double-sided high-power thyristor liquid-cooled heat sink.

[0021] Figure 2 This is a schematic diagram of the liquid cooling channel.

[0022] Figure 3 This is a schematic diagram of the internal structure of the main body.

[0023] The following are the labels in the diagram: 1. Liquid cooling channel; 2. Liquid inlet; 3. Liquid outlet; 4. Partition wall; 5. Contact column; 6. Main body; 7. First cover; 8. Second cover; 9. Injection port; 10. First injection channel; 11. Second injection channel; 12. Diversion channel; 13. Merging channel; 14. Drain outlet; 15. Drain channel. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] Please refer to Figure 1 As shown, a double-sided high-power thyristor liquid-cooled heat sink includes a heat sink body, which includes a main body 6, a first cover 7, and a second cover 8. The main body 6 is located between the first cover 7 and the second cover 8. The first cover 7 and the second cover 8 are symmetrically arranged on both sides of the main body 6 and are fixedly connected to the main body 6. Optionally, the main body 6, the first cover 7, and the second cover 8 are connected by vacuum brazing to ensure the overall sealing of the heat sink body.

[0028] The radiator body has a liquid cooling channel 1 inside;

[0029] Specifically, such as Figure 2 As shown, liquid cooling channels 1 are provided on the side walls of the first cover 7 and the second cover 8 near the main body 6, and the two liquid cooling channels 1 are arranged symmetrically.

[0030] Furthermore, the liquid cooling channel 1 has an eye-shaped structure, and the liquid cooling channel 1 has an inlet 2 and an outlet 3. The inlet 2 is located at the center of the liquid cooling channel 1, and the outlet 3 is located at the edge of the liquid cooling channel 1.

[0031] Therefore, the cooling liquid flows into the liquid cooling channel 1 from the inlet 2. Through the eyelet-shaped structure of the liquid cooling channel 1, the cooling liquid can rotate and diffuse in all directions, and finally converge at the outlet 3. Through rotation and diffusion, the contact area between the cooling liquid and the radiator body is increased, effectively improving the heat dissipation efficiency.

[0032] The liquid cooling channel 1 consists of multiple flow paths evenly arranged circumferentially;

[0033] Specifically, in this embodiment, the liquid cooling channel 1 consists of three flow paths, which are evenly arranged in the circumferential direction and are separated from each other by a partition wall 4.

[0034] The cooling liquid flows into the liquid cooling channel 1, which consists of three flow paths. After flowing into the liquid cooling channel 1 from the inlet 2, it is divided by the three flow paths. The three flow paths are set in parallel, which effectively reduces the flow resistance.

[0035] Furthermore, partition wall 4 has a continuous wave-shaped structure;

[0036] This further increases the contact area between the coolant and the radiator body, allowing the coolant to fully absorb the heat from the radiator body. The continuous wave-shaped partition wall 4 increases the heat dissipation area of ​​the radiator body, facilitating heat conduction. At the same time, the continuous wave-shaped structure increases the turbulence of the coolant, further improving the heat dissipation effect.

[0037] The liquid cooling channel 1 also includes a multi-component flow section, which is provided for multiple partition walls 4 and is located at the end of the partition wall 4 away from the liquid inlet 2;

[0038] The diversion section includes multiple contact columns 5, which are arranged along the extension direction of the partition wall 4. The cross-sectional shape of the contact column 5 is teardrop-shaped.

[0039] Specifically, in this embodiment, the diversion section has three sets, which are arranged one-to-one with the three partition walls 4. The diversion section is located at the end of the partition wall 4 away from the liquid inlet 2. The diversion section includes multiple contact columns 5. The arrangement direction of the multiple contact columns 5 extends along the length direction of the partition wall 4. The cross-sectional shape of the contact column 5 is teardrop-shaped, and its tip faces the partition wall 4.

[0040] Therefore, after the cooling liquid flows out of the partition wall 4, it continues to disperse around the liquid cooling channel 1 and comes into contact with the contact column 5. The tip of the contact column 5 diverts the cooling liquid, allowing it to spread further and increasing the contact area between the cooling liquid and the radiator body, thereby improving the heat dissipation efficiency.

[0041] like Figure 3As shown, a liquid injection port 9 is provided on the side wall of the main body 6, and a liquid injection channel is provided inside the main body 6. The liquid injection channel includes a first liquid injection channel 10, one end of the first liquid injection channel 10 is connected to the liquid injection port 9, and the other end is connected to the second liquid injection channel 11.

[0042] Furthermore, a branch channel 12 is provided through the center of the main body 6. The two ends of the branch channel 12 are connected to the liquid inlets 2 of the two liquid cooling channels 1 respectively. The end of the second liquid injection channel 11 away from the first liquid injection channel 10 is connected to the branch channel 12.

[0043] Thus, the cooling liquid enters the injection channel through the injection port 9, flows through the first injection channel 10 and the second injection channel 11 into the diversion channel 12, and enters the two liquid cooling channels 1 through the diversion channel 12. Then, the cooling liquid performs liquid cooling on the radiator body.

[0044] The main body 6 is also provided with a manifold 13, and the two ends of the manifold 13 are respectively connected to the liquid outlets 3 of the two liquid cooling channels 1.

[0045] Furthermore, a drain outlet 14 is provided on the side wall of the main body 6, and a drain channel 15 is provided inside the main body 6. One end of the drain channel 15 is connected to the confluence channel 13, and the other end is connected to the drain outlet 14.

[0046] Thus, the cooling liquid in the first cover 7 and the second cover 8 passes through the liquid cooling channel 1, enters the manifold 13 through the outlet 3, and is then discharged from the drain channel 15 to the drain outlet 14. At this point, the cooling liquid that has absorbed the heat of the radiator body is discharged.

[0047] Working principle: Cooling liquid enters the injection channel through injection port 9, passes through the first injection channel 10 and the second injection channel 11 and enters the diversion channel 12. It is then diverted into the two liquid cooling channels 1 through the diversion channel 12. The cooling liquid then cools the radiator body. The cooling liquid enters the liquid cooling channel 1 through the inlet 2 at the center of the liquid cooling channel 1 and is diverted through three flow paths. At the same time, the cooling liquid comes into contact with the continuous wave-shaped partition wall 4, which fully absorbs the heat of the radiator body. After flowing out of the flow path, it comes into contact with the contact column 5 with a water droplet-shaped cross-section, and is further diverted, which further increases the contact area with the radiator body. Finally, the cooling liquid is collected at the outlet 3. The cooling liquid in the first cover 7 and the second cover 8 enters the confluence channel and is discharged from the drain channel 15 to the drain port 14.

[0048] This device effectively reduces flow resistance through two parallel liquid cooling channels 1 and three parallel flow paths. At the same time, it effectively increases the contact area between the cooling liquid and the radiator body through continuous wavy partition walls and teardrop-shaped contact columns 5, thereby improving heat dissipation efficiency and meeting the thermal resistance requirements of double-sided high-power thyristors.

[0049] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A double-sided high-power thyristor liquid cooling radiator, characterized in that, include: The radiator body has a liquid cooling channel (1) inside. The liquid cooling channel (1) has an eyelet structure. The liquid cooling channel (1) has an inlet (2) and an outlet (3). The inlet (2) is located at the center of the liquid cooling channel (1), and the outlet (3) is located at the edge of the liquid cooling channel (1). The liquid cooling channel (1) is composed of multiple flow paths evenly arranged in the circumference. Adjacent flow paths are separated by a partition wall (4), which is a continuous wave-shaped structure.

2. A double-sided high-power thyristor liquid cooling radiator according to claim 1, characterized in that, The liquid cooling channel (1) also includes multiple flow dividers, which are arranged corresponding to multiple partition walls (4) and located at the end of the partition wall (4) away from the liquid inlet (2).

3. A double-sided high-power thyristor liquid-cooled heat sink according to claim 2, characterized in that, The diversion section includes multiple contact columns (5), which are arranged along the extension direction of the partition wall (4), and the cross-sectional shape of the contact column (5) is teardrop-shaped.

4. A liquid-cooled heat sink for a double-sided high-power thyristor according to claim 3, characterized in that The radiator body includes a main body (6), and a first cover (7) and a second cover (8) are fixedly provided on two opposite side walls of the main body (6). The first cover (7) and the second cover (8) are provided with liquid cooling channels (1) on the side walls of the main body (6) and the two liquid cooling channels (1) are symmetrically arranged.

5. A liquid-cooled heat sink for a double-sided high-power thyristor according to claim 4, characterized in that The main body (6) has an injection port (9) on its side wall and an injection channel inside the main body (6). The injection channel includes a first injection channel (10), one end of which is connected to the injection port (9) and the other end is connected to a second injection channel (11).

6. A liquid-cooled heat sink for a double-sided high-power thyristor according to claim 5, characterized in that The main body (6) has a branch channel (12) through the center. The two ends of the branch channel (12) are connected to the liquid inlets (2) of the two liquid cooling channels (1) respectively. The end of the second liquid injection channel (11) away from the first liquid injection channel (10) is connected to the branch channel (12).

7. A liquid-cooled heat sink for a double-sided high-power thyristor according to claim 6, characterized in that The main body (6) is also provided with a manifold (13), and the two ends of the manifold (13) are connected to the liquid outlets (3) of the two liquid cooling channels (1).

8. A liquid-cooled heat sink for a double-sided high-power thyristor according to claim 7, characterized in that The main body (6) is also provided with a drain port (14) on its side wall and a drain channel (15) is also provided inside the main body (6). One end of the drain channel (15) is connected to the confluence channel (13) and the other end is connected to the drain port (14).

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