Water cooling device of power device

Abstract

The utility model discloses a water cooling device of a power device, and relates to the technical field of semiconductors. The device comprises a base, at least one insulating plate and at least one switching copper bar. The base is provided with a water cooling cavity for accommodating the power device. The insulating plate is mounted on the base, and an insulating limiting groove is formed in the insulating plate. The switching copper bar is located in the insulating limiting groove, and when the power device is embedded in the water cooling cavity, a power terminal of the power device is in surface contact with the switching copper bar. Therefore, in the power cycle test process of the power device, the surface contact between the power terminal and the switching copper bar can be ensured while water cooling is performed, so that the power terminal can be supported, the power terminal is prevented from being bent due to stress, and the contact yield of the power terminal and the switching copper bar is ensured.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor technology, and in particular to a water cooling device for power devices. Background Technology

[0002] Currently, power devices using HPD (High Power Device) packages are widely used in vehicle electric drive systems. Due to their built-in heat dissipation structure and uneven bottom, external water cooling devices are typically used for heat dissipation during power cycle testing.

[0003] However, since the water-cooling device lacks an adapter support, a large number of nuts are needed to tighten the power device with the adapter copper strip during power cycling. This increases the stress on the power terminals of the power device, which can easily lead to bending of the power terminals and increase the risk of poor contact. Utility Model Content

[0004] In view of the current problem that a large number of nuts are required to lock the power device and the adapter copper strip, which increases the stress on the power terminal of the power device, easily leads to bending of the power terminal, and increases the risk of poor contact, this utility model is proposed to provide a water cooling device for power devices that overcomes or at least partially solves the above problems.

[0005] This utility model provides a water-cooling device for power devices, the water-cooling device comprising:

[0006] The base has a water-cooled cavity for housing the power devices;

[0007] At least one insulating board is mounted on the base, wherein the insulating board is provided with an insulating limiting groove;

[0008] At least one adapter copper strip is located within the insulating limiting groove, wherein when the power device is embedded in the water-cooling cavity, the power terminal of the power device forms surface contact with the adapter copper strip.

[0009] In one optional utility model, the inner edge of the water-cooling cavity is further provided with a rubber ring mounting groove, and the water-cooling device further includes a sealing ring, which is embedded in the rubber ring mounting groove and surrounds the power device to seal the water-cooling channel formed by the power device and the water-cooling cavity.

[0010] In one optional utility model, at least one terminal adapter hole is provided on the end of the adapter copper strip near the water-cooling cavity, wherein the terminal adapter hole cooperates with a fastener to form an electrical connection between the power terminal and the adapter copper strip.

[0011] In one optional utility model, the base is further provided with a device positioning hole, the device positioning hole being adapted to the shape of a positioning protrusion on the power device to define the assembly position of the power device on the base.

[0012] In one optional utility model, the base has at least one connection hole, which surrounds the periphery of the water-cooling cavity, so as to fix the power device by fasteners engaging with the connection hole.

[0013] In one optional utility model, at least one adapter wire hole is provided at the end of the adapter copper strip away from the water-cooling cavity, wherein the adapter wire hole cooperates with a fastener to form an electrical connection between the power line of the power testing equipment and the adapter copper strip.

[0014] In one optional utility model, the insulating limiting groove has an L-shaped cross-section to limit the power line.

[0015] In one optional utility model, when there are at least two connecting copper strips, the at least two connecting copper strips are distributed on both sides of the water-cooling cavity.

[0016] In one optional utility model, the side of the base is further provided with a water inlet adapter terminal and a water outlet adapter terminal, the water inlet adapter terminal and the water outlet adapter terminal being connected to the water cooling cavity respectively.

[0017] An optional utility model includes a base made of aluminum.

[0018] In one optional utility model, the outer surface of the base is covered with an insulating layer.

[0019] An optional utility model embodiment states that the insulating board is made of polytetrafluoroethylene (PTFE).

[0020] Compared with existing technologies, this utility model includes a base, at least one insulating plate, and at least one adapter copper strip. The base has a water-cooling cavity for accommodating power devices. The insulating plate is mounted on the base, and has an insulating limiting groove. The adapter copper strip is located within the insulating limiting groove. When the power device is embedded in the water-cooling cavity, the power terminal of the power device forms surface contact with the adapter copper strip. Therefore, during power cycle testing, the power device can be cooled by water while maintaining surface contact between the power terminal and the adapter copper strip, thus providing support for the power terminal, preventing bending under stress, and ensuring a high contact rate between the power terminal and the adapter copper strip.

[0021] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0023] In the attached diagram:

[0024] Figure 1 This is a three-dimensional structural diagram of a water-cooling device provided in an embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of the first part of a water-cooling device provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the second part of a water-cooling device provided in an embodiment of the present invention;

[0027] Figure 4 yes Figure 1 Enlarged structural diagram at point A;

[0028] Reference numerals: 1. Base; 101. Water-cooled cavity; 102. Rubber ring mounting groove; 103. Component positioning hole; 104. Connection hole; 2. Insulating plate; 201. Insulating limiting groove; 3. Adapter copper strip; 301. Terminal adapter hole; 302. Adapter wire hole; 4. Water inlet adapter terminal; 5. Water outlet adapter terminal. Detailed Implementation

[0029] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0030] Currently, power devices using HPD (High Power Device) packages are widely used in vehicle electric drive systems. Due to their built-in heat dissipation structure and uneven bottom, external water cooling devices are typically used for heat dissipation during power cycle testing.

[0031] However, since the water-cooling device lacks an adapter support, a large number of nuts are needed to tighten the power device with the adapter copper strip during power cycling. This increases the stress on the power terminals of the power device, which can easily lead to bending of the power terminals and increase the risk of poor contact.

[0032] Based on the aforementioned technical problems, this utility model embodiment is proposed. This utility model embodiment may include a base 1, at least one insulating plate 2, and at least one adapter copper strip 3. The base 1 has a water-cooling cavity 101 for accommodating power devices. The insulating plate 2 is mounted on the base 1, and has an insulating limiting groove 201. The adapter copper strip 3 is located within the insulating limiting groove 201. When the power device is embedded in the water-cooling cavity 101, the power terminal of the power device forms surface contact with the adapter copper strip 3. Therefore, during power cycle testing, the power device can be cooled by water while maintaining surface contact between the power terminal and the adapter copper strip 3, thus providing support for the power terminal, preventing bending under stress, and ensuring a high contact rate between the power terminal and the adapter copper strip 3.

[0033] Reference Figure 1-4 This utility model provides a water-cooling device for a power device. The water-cooling device may include a base 1, at least one insulating plate 2, and at least one transition copper strip 3. The base 1 has a water-cooling cavity 101 for accommodating the power device. The insulating plate 2 is mounted on the base 1, and has an insulating limiting groove 201. The transition copper strip 3 is located within the insulating limiting groove 201. When the power device is embedded in the water-cooling cavity 101, the power terminals of the power device form surface contact with the transition copper strip 3.

[0034] In this embodiment of the present invention, the base 1 is used to provide mounting for other devices of the water cooling device. The power devices may include, but are not limited to, IGBT (Insulated Gate Bipolar Transistor) modules and MOS (Metal Oxide Semiconductor Field Effect Transistor) modules.

[0035] The insulating plate 2 is mounted on the base 1. The insulating plate 2 has an insulating limiting groove 201, which provides installation space for the adapter copper strip 3. For example, the adapter copper strip 3 can be embedded within the insulating limiting groove 201 and can form a clearance fit with the insulating limiting groove 201. Therefore, on the one hand, the insulating plate 2 can be used for electrical insulation between the adapter copper strip 3 and the base 1; on the other hand, the insulating plate 2 can also limit the position of the adapter copper strip 3 through the insulating limiting groove 201, facilitating the positioning and assembly of the adapter copper strip 3 on the insulating plate 2, thereby reducing the assembly time of the adapter copper strip 3.

[0036] The base 1 also has a water-cooling cavity 101 for embedding the power device. For example, the water-cooling cavity 101 and the power device can be fitted with a clearance, and when the power device is embedded in the water-cooling cavity 101, the power device and the base 1 can cooperate to form a water-cooling channel for water cooling of the bottom of the power device. At the same time, when the power device is embedded in the water-cooling cavity 101, the power terminal of the power device can form a surface contact with the adapter copper strip 3. Thus, the insulating plate 2 and the adapter copper strip 3 can support the power terminal connected to the adapter copper strip 3, preventing the power terminal from bending under force, ensuring a good contact rate between the power terminal of the power device and the adapter copper strip 3, and avoiding problems such as poor contact at the bending point of the power terminal, which could lead to severe local heat generation.

[0037] In summary, this utility model discloses a water-cooling device for a power device. The water-cooling device may include a base 1, at least one insulating plate 2, and at least one adapter copper strip 3. The base 1 has a water-cooling cavity 101 for accommodating the power device. The insulating plate 2 is mounted on the base 1, and an insulating limiting groove 201 is formed on the insulating plate 2. The adapter copper strip 3 is located within the insulating limiting groove 201. When the power device is embedded in the water-cooling cavity 101, the power terminal of the power device forms surface contact with the adapter copper strip 3. Therefore, during power cycle testing, the power device can be cooled by water while maintaining surface contact between the power terminal and the adapter copper strip 3, thus providing support for the power terminal, preventing bending under stress, and ensuring a high contact rate between the power terminal and the adapter copper strip 3.

[0038] An optional embodiment of the utility model, referring to... Figure 1 and Figure 2As shown, the inner edge of the water-cooling cavity 101 is also provided with a rubber ring mounting groove 102. The water-cooling device also includes a sealing ring, which is embedded in the rubber ring mounting groove 102 and surrounds the power device to seal the water-cooling channel formed by the power device and the water-cooling cavity 101.

[0039] In this embodiment of the present invention, a rubber ring mounting groove 102 is further provided on the inner edge of the water-cooling cavity 101, wherein the rubber ring mounting groove 102 is located on the end face of the water-cooling cavity 101 near the insulating plate 2. The water-cooling device may also include a sealing ring, for example, the sealing ring may be made of silicone or rubber material, thereby having certain deformation properties. The sealing ring is embedded in the rubber ring mounting groove 102, for example, the sealing ring may be bonded to the rubber ring mounting groove 102, or the sealing ring may be snapped into the rubber ring mounting groove 102.

[0040] When the power device is placed in the water-cooling cavity 101 for power cycle testing, the sealing ring surrounds the power device, thereby sealing the connection gap between the power device and the base 1, and achieving the sealing effect of the water-cooling channel formed by the power device and the water-cooling cavity 101. This can prevent water leakage from the power device during the power cycle test.

[0041] An optional utility model embodiment, referring to... Figure 1 and Figure 2 As shown, the water-cooling device may include a base 1, at least one insulating plate 2, and at least one adapter copper strip 3. The base 1 has a water-cooling cavity 101 for accommodating power devices. The insulating plate 2 is mounted on the base 1 and has an insulating limiting groove 201. The adapter copper strip 3 is located within the insulating limiting groove 201. When the power device is embedded in the water-cooling cavity 101, the power terminal of the power device forms surface contact with the adapter copper strip 3. Furthermore, at least one terminal adapter hole 301 is provided on the end of the adapter copper strip 3 near the water-cooling cavity 101. The terminal adapter hole 301 cooperates with a fastener to form an electrical connection between the power terminal and the adapter copper strip 3.

[0042] In this embodiment of the invention, the base 1 is used to provide mounting space for other components of the water-cooling device. The insulating plate 2 is mounted on the base 1. The insulating plate 2 has an insulating limiting groove 201, which provides mounting space for the adapter copper strip 3. For example, the adapter copper strip 3 can be embedded within the insulating limiting groove 201 and can form a clearance fit with it. Therefore, on the one hand, the insulating plate 2 can be used for electrical insulation between the adapter copper strip 3 and the base 1; on the other hand, the insulating plate 2 can also define the position of the adapter copper strip 3 through the insulating limiting groove 201, facilitating the positioning and assembly of the adapter copper strip 3 on the insulating plate 2.

[0043] The base 1 also has a water-cooling cavity 101 for embedding the power device. For example, the water-cooling cavity 101 and the power device can be fitted with a clearance, and when the power device is embedded in the water-cooling cavity 101, the power device and the base 1 can cooperate to form a water-cooling channel for water cooling of the bottom of the power device. At the same time, when the power device is embedded in the water-cooling cavity 101, the power terminal of the power device can form surface contact with the adapter copper strip 3.

[0044] At least one terminal adapter hole 301 is provided on the end of the adapter copper strip 3 near the water-cooling cavity 101. The terminal adapter hole 301 cooperates with a fastener to form an electrical connection between the power terminal and the adapter copper strip 3. For example, the terminal adapter hole 301 can be a threaded hole, and the fastener can be a screw. Thus, when the lower surface of the power terminal makes surface contact with the upper surface of the adapter copper strip 3, the power terminal is fixed to the adapter copper strip 3 by the threaded engagement of the screw and the terminal adapter hole 301. Through the limiting effect of the insulating plate 2 on the adapter copper strip 3, a large contact area can be maintained when the power terminal is connected to the adapter copper strip 3. The large contact area can reduce the possibility of local overheating at the connection between the power terminal and the adapter copper strip 3, and reduce the risk of poor contact or short circuit between the power terminal and the adapter copper strip 3. It can also ensure that the power terminal will not be bent under stress. Overall, this can improve the testing efficiency and accuracy of the power devices in power cycle testing.

[0045] An optional embodiment of the utility model, referring to... Figure 2 As shown, the base 1 is also provided with a device positioning hole 103, which is adapted to the shape of the positioning protrusion on the power device to limit the assembly position of the power device on the base 1.

[0046] In this embodiment of the invention, to improve the assembly and testing efficiency of the power device in the water-cooling device, a device positioning hole 103 is provided on the base 1 near the water-cooling cavity 101. The device positioning hole 103 is used to position the power device. For example, a corresponding positioning protrusion can be provided on one end face of the power device. Thus, the assembly and positioning of the power device can be achieved by adapting the shape of the device positioning hole 103 to the positioning protrusion (also known as clearance fit).

[0047] An optional utility model embodiment, referring to... Figure 1 and Figure 2 As shown, the base 1 has at least one connection hole 104, which surrounds the periphery of the water-cooled cavity 101, so as to fix the power device by fasteners cooperating with the connection hole 104.

[0048] In this embodiment of the invention, at least one connecting hole 104 is provided on the base 1. The connecting hole 104 surrounds the periphery of the water-cooling cavity 101. For example, when the power device is embedded in the water-cooling cavity 101, the power device located outside the water-cooling cavity 101 extends outwards to cover the area on the base 1 where the connecting hole 104 is provided. Thus, the power device can be fixed to the base 1 by the cooperation of the fastener with the connecting hole 104. For example, the connecting hole 104 can be a threaded hole, and the fastener can be a screw. Those skilled in the art can determine the number of connecting holes 104 according to the specifications of the power device. For example, the number of connecting holes 104 can be 3, 4, 5, 6, or 8, etc., and no further limitations are imposed here.

[0049] An optional utility model embodiment, referring to... Figure 1 , Figure 3 as well as Figure 4 As shown, at least one adapter wire hole 302 is provided at the end of the adapter copper strip 3 away from the water cooling cavity 101. The adapter wire hole 302 cooperates with the fastener to form an electrical connection between the power line of the power testing equipment and the adapter copper strip 3.

[0050] In this embodiment of the invention, at least one adapter hole 302 is provided at the end of the adapter copper strip 3 furthest from the water-cooling cavity 101. The adapter hole 302 is used for coupling the adapter copper strip 3 to the power line of the power cycling test equipment. The adapter hole 302 cooperates with a fastener to form an electrical connection between the power line and the adapter copper strip 3. For example, the adapter hole 302 can be a threaded hole, and the fastener can be a screw. With the insulating plate 2 as support, and during the electrical connection process, the lower surface of the power line terminal is kept in surface contact with the upper surface of the adapter copper strip 3. This prevents the power line terminal from being bent under force, resulting in a reduced contact area with the adapter copper strip 3, which could cause localized overheating or short circuits.

[0051] An optional utility model embodiment, referring to... Figure 3 and Figure 4 As shown, the cross-sectional shape of the insulating limiting groove 201 is L-shaped, so as to limit the power line through the insulating limiting groove 201.

[0052] In this embodiment of the invention, the cross-sectional shape of the insulating limiting groove 201 can be L-shaped. For example, one end of the insulating limiting groove 201 faces the water-cooling cavity 101, and the other end faces outward from the base 1. Thus, the insulating limiting groove 201 can, on the one hand, assemble and position the adapter copper strip 3; on the other hand, it can also limit the position of the power lines of the power cycle testing equipment, thereby standardizing the routing of the power lines and improving their neatness. This avoids the problem of short circuits caused by irregular placement of the power lines leading to close spacing between the two power terminals.

[0053] In some embodiments, the number of insulating limiting grooves 201 is adapted to the number of power terminals of the power device. When at least two insulating limiting grooves 201 are provided, the number of L-shaped insulating limiting grooves 201 can be consistent with the number of power lines. The cross-sectional shape of other insulating limiting grooves 201 (e.g., the insulating limiting groove 201 on the side away from the power lines) can be rectangular, etc. Those skilled in the art can determine the cross-sectional shape of the insulating limiting grooves 201 according to actual design requirements; no further limitations are imposed here.

[0054] In one optional embodiment of the utility model, when there are at least two adapter copper strips 3, the at least two adapter copper strips 3 are distributed on both sides of the water-cooling cavity 101.

[0055] In this embodiment of the present invention, when at least two of the adapter copper strips 3 are provided, considering that the power terminals of the power device have two sides, at least two of the adapter copper strips 3 are distributed on both sides of the water-cooling cavity 101, thereby facilitating the electrical connection between the power terminals and the adapter copper strips 3.

[0056] Correspondingly, at least two insulating plates 2 are provided and distributed on both sides of the water-cooling cavity 101, thereby providing positioning support for the connecting copper strips 3 on both sides of the water-cooling cavity 101.

[0057] An optional utility model embodiment, referring to... Figure 1 and Figure 2 As shown, the water-cooling device may include a base 1, at least one insulating plate 2, and at least one adapter copper strip 3. The base 1 has a water-cooling cavity 101 for accommodating power devices. The insulating plate 2 is mounted on the base 1 and has an insulating limiting groove 201. The adapter copper strip 3 is located within the insulating limiting groove 201. When the power device is embedded in the water-cooling cavity 101, the power terminal of the power device forms surface contact with the adapter copper strip 3. The side of the base 1 is also provided with an inlet adapter terminal 4 and an outlet adapter terminal 5, which are respectively connected to the water-cooling cavity 101.

[0058] In this embodiment of the present invention, the base 1 is used to provide mounting for other devices of the water cooling device. The power devices may include, but are not limited to, IGBT (Insulated Gate Bipolar Transistor) modules and MOS (Metal Oxide Semiconductor Field Effect Transistor) modules.

[0059] The insulating plate 2 is mounted on the base 1. The insulating plate 2 has an insulating limiting groove 201, which provides installation space for the adapter copper strip 3. For example, the adapter copper strip 3 can be embedded within the insulating limiting groove 201 and can form a clearance fit with the insulating limiting groove 201. Therefore, on the one hand, the insulating plate 2 can be used for electrical insulation between the adapter copper strip 3 and the base 1; on the other hand, the insulating plate 2 can also limit the position of the adapter copper strip 3 through the insulating limiting groove 201, facilitating the positioning and assembly of the adapter copper strip 3 on the insulating plate 2.

[0060] The base 1 also has a water-cooling cavity 101 for embedding the power device. For example, the water-cooling cavity 101 and the power device can be fitted with a clearance, and when the power device is embedded in the water-cooling cavity 101, the power device and the base 1 can cooperate to form a water-cooling channel for water cooling of the bottom of the power device. At the same time, when the power device is embedded in the water-cooling cavity 101, the power terminal of the power device can form a surface contact with the adapter copper strip 3. Thus, the insulating plate 2 and the adapter copper strip 3 can support the power terminal connected to the adapter copper strip 3, preventing the power terminal from bending under force, ensuring a good contact rate between the power terminal of the power device and the adapter copper strip 3, and avoiding problems such as poor contact at the bending point of the power terminal, which could lead to severe local heat generation.

[0061] The inlet adapter terminal 4 and the outlet adapter terminal 5 are respectively disposed on both sides of the water-cooling cavity 101. For example, the inlet adapter terminal 4 and the outlet adapter terminal 5 are disposed on both sides of the water-cooling cavity 101 away from the power terminal. The inlet adapter terminal 4 and the outlet adapter terminal 5 are connected to the water-cooling cavity 101 via a water path.

[0062] The water inlet adapter terminal 4 is connected to the external water inlet pipe, and the water outlet adapter terminal 5 is connected to the external water outlet pipe. Thus, during the power cycle test of the water cooling device, under the driving action of the water pump, the circulating water enters the water cooling chamber 101 through the external water inlet pipe, and then the circulating water is led out of the water cooling chamber 101 through the external water outlet pipe.

[0063] In one optional embodiment of the utility model, the base 1 is made of aluminum.

[0064] In this embodiment of the utility model, the base 1 can be made of aluminum material, which has good thermal conductivity. This allows the heat generated at the connection between the power terminal of the power device and the adapter copper strip 3 to be diffused outward through the base 1, thereby reducing the heat generation of the power terminal during the power cycle test.

[0065] In one optional embodiment of the utility model, the outer surface of the base 1 is covered with an insulating layer.

[0066] In this embodiment of the present invention, an insulating layer is also provided on the outer surface of the base 1. For example, the outer surface of the base 1 is coated with an insulating coating, which can prevent the base 1 from leaking electricity.

[0067] In one optional embodiment of the utility model, the insulating board 2 is made of polytetrafluoroethylene material.

[0068] In this embodiment of the invention, the insulating plate 2 can be made of polytetrafluoroethylene (PTFE). PTFE is a fluoropolymer coating based on PTFE resin, also known as Teflon, and possesses good high-temperature resistance and insulation properties. Therefore, even when the connection between the power terminal of the power device and the adapter copper strip 3 generates heat, the insulating plate 2 can firmly support the adapter copper strip 3. This allows the heat generated at the connection between the power terminal of the power device and the adapter copper strip 3 to be transferred to the base 1 through the adapter copper strip 3 and the insulating plate 2, and finally, the heat on the base 1 is rapidly dissipated.

[0069] In some optional utility model embodiments, at least one fixing threaded hole may be provided on the adapter copper strip 3 and the insulating plate 2, so that the adapter copper strip 3 can be fixed on the insulating plate 2 by the cooperation between the screw and the fixing threaded hole.

[0070] In some alternative embodiments of the utility model, at least one fixing threaded hole may be provided on the insulating plate 2 and the base 1, so that the insulating plate 2 can be fixed to the base 1 by the cooperation between the screw and the fixing threaded hole.

[0071] In some alternative embodiments of the utility model, the water cooling device further includes a positioning pin, which can be located on the end face of the insulating plate 2 near the base 1. Correspondingly, the base 1 has an insulating positioning hole, thereby determining the mounting position of the insulating plate 2 on the base 1 through the clearance fit between the positioning pin and the insulating positioning hole, facilitating the fixed connection between the insulating plate 2 and the base 1.

[0072] In some optional embodiments of the utility model, the adapter copper strip 3 can also be made of copper, and a nickel layer can be provided on the outer surface of the adapter copper strip 3. This nickel layer can be obtained by nickel plating on the outer surface of the adapter copper strip 3. This avoids poor contact caused by oxidation of the adapter copper strip 3.

[0073] In summary, this utility model discloses a water-cooling device for a power device. The water-cooling device may include a base 1, at least one insulating plate 2, and at least one adapter copper strip 3. The base 1 has a water-cooling cavity 101 for accommodating the power device. The insulating plate 2 is mounted on the base 1, and an insulating limiting groove 201 is formed on the insulating plate 2. The adapter copper strip 3 is located within the insulating limiting groove 201. When the power device is embedded in the water-cooling cavity 101, the power terminal of the power device forms surface contact with the adapter copper strip 3. Therefore, during power cycle testing, the power device can be cooled by water while maintaining surface contact between the power terminal and the adapter copper strip 3, thus providing support for the power terminal, preventing bending under stress, and ensuring a high contact rate between the power terminal and the adapter copper strip 3.

[0074] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0075] It will be readily apparent to those skilled in the art that any combination of the above embodiments is feasible. Therefore, any combination of the above embodiments is an implementation scheme of this utility model. However, due to space limitations, this specification will not describe them in detail here.

[0076] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0077] Similarly, it should be understood that, in order to simplify the present invention and aid in understanding one or more of the various aspects of the invention, in the description of exemplary embodiments of the present invention above, various features of the present invention are sometimes grouped together in a single embodiment, figure, or description thereof.

[0078] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

Claims

1. A water-cooling device for a power device, characterized in that, The water cooling device includes: A base (1) is provided with a water-cooled cavity (101) for accommodating power devices; At least one insulating plate (2) is installed on the base (1), wherein the insulating plate (2) is provided with an insulating limiting groove (201); At least one adapter copper strip (3) is located in the insulating limiting groove (201), wherein when the power device is embedded in the water cooling cavity (101), the power terminal of the power device forms surface contact with the adapter copper strip (3).

2. The water-cooling device for the power device according to claim 1, characterized in that, The inner edge of the water-cooling cavity (101) is also provided with a rubber ring mounting groove (102). The water-cooling device also includes a sealing ring, which is embedded in the rubber ring mounting groove (102) and surrounds the power device to seal the water-cooling channel formed by the power device and the water-cooling cavity (101).

3. The water-cooling device for the power device according to claim 1, characterized in that, At least one terminal adapter hole (301) is provided on the end of the adapter copper strip (3) near the water cooling cavity (101), wherein the terminal adapter hole (301) cooperates with the fastener to form an electrical connection between the power terminal and the adapter copper strip (3).

4. The water-cooling device for the power device according to claim 1, characterized in that, The base (1) is also provided with a device positioning hole (103), which is adapted to the shape of the positioning protrusion on the power device to limit the assembly position of the power device on the base (1).

5. The water-cooling device for the power device according to claim 4, characterized in that, The base (1) has at least one connection hole (104) which surrounds the periphery of the water-cooled cavity (101) so as to fix the power device by fasteners cooperating with the connection hole (104).

6. The water-cooling device for the power device according to claim 1, characterized in that, The adapter copper strip (3) has at least one adapter wire hole (302) at the end away from the water cooling cavity (101), wherein the adapter wire hole (302) cooperates with the fastener to form an electrical connection between the power line of the power testing equipment and the adapter copper strip (3).

7. The water-cooling device for the power device according to claim 6, characterized in that, The insulating limiting groove (201) has an L-shaped cross-section to limit the power line.

8. The water-cooling device for the power device according to claim 1, characterized in that, When there are at least two connecting copper strips (3), at least two connecting copper strips (3) are distributed on both sides of the water-cooled cavity (101).

9. The water-cooling device for the power device according to claim 1, characterized in that, The base (1) is also provided with an inlet adapter terminal (4) and an outlet adapter terminal (5) on its side. The inlet adapter terminal (4) and the outlet adapter terminal (5) are respectively connected to the water cooling cavity (101).

10. The water-cooling device for the power device according to claim 1, characterized in that, The base (1) is made of aluminum.

11. The water-cooling device for the power device according to claim 1, characterized in that, The outer surface of the base (1) is covered with an insulating layer.

12. The water-cooling device for the power device according to claim 1, characterized in that, The insulating board (2) is made of polytetrafluoroethylene.

Images