Heat dissipation device and power module

Abstract

The invention relates to a heat dissipation device and a power module. The heat dissipation device comprises a shell assembly and a disturbance assembly. The shell assembly comprises a base and a shell cover; the shell cover is arranged on one side of the base, and an accommodating cavity is defined by the shell cover and the base; the face, facing the shell cover, of the base is configured to be a supporting face. The disturbance assembly is arranged in the containing cavity and arranged on the supporting face, the disturbance assembly comprises a plurality of disturbance parts, and the multiple disturbance parts are stacked in the thickness direction of the base. In the same disturbance piece, the disturbance piece comprises a plurality of protruding parts and a plurality of blocking parts, the extending direction of the protruding parts intersects with the extending direction of the blocking parts, the protruding parts are arranged at intervals in the first direction, and the blocking parts are arranged between every two adjacent protruding parts. In every two adjacent disturbance pieces, the orthographic projection of the protruding part of one disturbance piece on the supporting face partially coincides with the orthographic projection of the blocking part of the other disturbance piece on the supporting face. According to the heat dissipation device, the heat dissipation effect of the heat dissipation device can be improved.

Description

Technical Field

[0001] The present application relates to the field of heat dissipation technology, and in particular to a heat dissipation device and a power module. Background Art

[0002] With the continuous advancement of electronic technology, power modules are becoming more and more important in various applications, such as new energy vehicles, industrial automation, renewable energy systems, etc. These applications have put forward higher requirements on the performance and reliability of power modules, especially the heat dissipation performance.

[0003] By connecting a heat sink to the power module, the heat sink can improve the heat dissipation effect of the power module. In the related art, the heat sink includes a housing and a plurality of protrusions, and the plurality of protrusions are arranged in an array in the housing to form a pin-fin structure. When the coolant is injected into the housing, the heat sink can greatly improve the flow path of the coolant through the pin-fin-shaped protrusions, thereby increasing the heat dissipation surface area, thereby greatly improving the heat dissipation efficiency.

[0004] However, the pin-fin-shaped protrusions will increase the resistance to the coolant flow, and the coolant flow speed between the pin-fin-shaped protrusions will decrease. During the heat transfer process, the resistance in the coolant flow process will reduce the coolant heat transfer effect, and ultimately affect the heat dissipation effect of the heat dissipation device. Summary of the invention

[0005] Based on this, it is necessary to provide a heat dissipation device and a power module to solve the problem of poor heat dissipation effect of the heat dissipation device.

[0006] In a first aspect, a heat dissipation device comprises:

[0007] The shell assembly comprises a base and a shell cover; the shell cover is arranged on one side of the base, and the shell cover and the base are arranged to form a receiving cavity; the surface of the base facing the shell cover is configured as a supporting surface,

[0008] A disturbance component is arranged in the accommodating cavity and on the supporting surface, and the disturbance component includes a plurality of disturbance members, and the plurality of disturbance members are stacked along the thickness direction of the base;

[0009] In the same disturbing member, the disturbing member comprises a plurality of protrusions and a plurality of blocking portions, the extending direction of the protrusions intersects with the extending direction of the blocking portions, the plurality of protrusions are arranged at intervals along the first direction, and a blocking portion is arranged between two adjacent protrusions;

[0010] Among two adjacent disrupting members, the orthographic projection of the protruding portion of one disrupting member on the supporting surface partially overlaps with the orthographic projection of the blocking portion of the other disrupting member on the supporting surface.

[0011] In some embodiments, the disruptor comprises:

[0012] A first disrupting member is disposed on the supporting surface, the protruding portion of the first disrupting member is a first protruding portion, and the blocking portion of the first disrupting member is a first blocking portion;

[0013] The first protrusion includes a first sub-protrusion, a second sub-protrusion and a third sub-protrusion, the first sub-protrusion, the second sub-protrusion and the third sub-protrusion are arranged at intervals along the second direction, and the second sub-protrusion is located between the first sub-protrusion and the third sub-protrusion;

[0014] On one side of the first blocking portion along the first direction, the first sub-protrusion and the third sub-protrusion of one of the first protrusions are connected to the first blocking portion, and a first gap is formed between the second sub-protrusion of the first protrusion and the first blocking portion along the first direction;

[0015] On the other side of the first blocking portion along the first direction, the second sub-protrusion of another first protrusion portion is connected to the first blocking portion, and the first sub-protrusion and the third sub-protrusion of the first protrusion portion both have a first gap with the first blocking portion along the first direction;

[0016] The second direction intersects the first direction.

[0017] In some embodiments, a plurality of first blocking portions are arranged at intervals along the first direction to form a first blocking portion group, there are a plurality of first blocking portion groups, and the plurality of first blocking portion groups are arranged at intervals along the second direction;

[0018] The first disturbing member further includes a fourth sub-protrusion; the fourth sub-protrusion is disposed between two first blocking portions adjacent to each other along the second direction, and an extension direction of the fourth sub-protrusion intersects an extension direction of the first blocking portion;

[0019] Along the second direction, a second gap is formed between the fourth sub-protrusion and the first blocking portion.

[0020] In some embodiments, the agitator further comprises:

[0021] a second disrupting member, wherein the protruding portion of the second disrupting member is a second protruding portion, and the blocking portion of the second disrupting member is a second blocking portion;

[0022] The second protrusion includes a plurality of fifth sub-protrusions arranged along the second direction, all the fifth sub-protrusions of the second protrusion and two adjacent second blocking portions enclose a plurality of openings, and the plurality of openings are arranged along the second direction;

[0023] Part of the first gap is located within the orthographic projection of the opening on the supporting surface.

[0024] In some embodiments, there are a plurality of second disruptors, and orthographic projections of the plurality of second disruptors on the support surface at least partially do not overlap.

[0025] In some embodiments, there are multiple first disruptors, and the multiple first disruptors are distributed on both sides of the second disruptor;

[0026] The orthographic projection of the protrusion of the first disruptor on one side of the second disruptor on the support surface at least partially overlaps with the orthographic projection of the protrusion of the first disruptor on the other side of the second disruptor on the support surface.

[0027] In some embodiments, the heat dissipation device further includes a plurality of blocking members, the blocking members extending along the second direction, and the plurality of blocking members arranged at intervals along the first direction;

[0028] Along the first direction, there are multiple disturbance components, and a barrier is provided between two adjacent disturbance components;

[0029] The surface of the shell cover facing the base is configured as a buckling surface; the blocking member connects the supporting surface and the buckling surface, and a third gap is provided between the blocking member and the side wall of the shell cover.

[0030] In some embodiments, the shell cover includes a liquid inlet and a liquid outlet, both of which are connected to the accommodating cavity, and the liquid inlet and the liquid outlet are arranged at intervals.

[0031] In some embodiments, the housing assembly is an integrally formed structure.

[0032] In a second aspect, a power module comprises a power module and the heat dissipation device in the first aspect, wherein the heat dissipation device is connected to the power module.

[0033] The above-mentioned heat dissipation device includes a shell component and a disturbance component. The shell component includes a base and a shell cover; the shell cover is arranged on one side of the base, and the shell cover and the base are surrounded to form a receiving cavity; the surface of the base facing the shell cover is configured as a supporting surface. The disturbance component is arranged in the receiving cavity and on the supporting surface, and the disturbance component includes a plurality of disturbance members, and the plurality of disturbance members are stacked along the thickness direction of the base. In the same disturbance member, the disturbance member includes a plurality of protrusions and a plurality of blocking members, the extension direction of the protrusions and the extension direction of the blocking members intersect, the plurality of protrusions are arranged at intervals along the first direction, and a blocking member is arranged between two adjacent protrusions. In two adjacent disturbance members, the orthographic projection of the protrusion of one disturbance member on the supporting surface partially overlaps with the orthographic projection of the blocking member of the other disturbance member on the supporting surface.

[0034] The heat dissipation device of the present application has a blocking portion provided between two adjacent protrusions in the same disturbance member, and the extension direction of the protrusion intersects with the extension direction of the blocking portion. Therefore, when the coolant flows through the protrusion, the blocking portion can block the coolant, thereby changing the flow direction of the coolant, thereby causing the coolant to form turbulence between the protrusion and the blocking portion, thereby increasing the flow speed of the coolant and improving the heat dissipation effect of the heat dissipation device.

[0035] Similarly, since, among two adjacent disruptors, the orthographic projection of the raised portion of one of the disruptors on the supporting surface partially overlaps with the orthographic projection of the blocking portion of the other disruptor on the supporting surface, that is, in the process of the coolant flowing through the two adjacent disruptors, when the coolant flows through the raised portion of one of the disruptors, the blocking portion of the other disruptor can block the coolant, thereby changing the flow direction of the coolant. At the same time, when the coolant flows through the blocking portion of one of the disruptors, the coolant can be blocked by the raised portion of the other disruptor, thereby changing the flow direction of the coolant, so that the coolant forms turbulence between the two adjacent disruptors, thereby further increasing the flow velocity of the coolant and improving the heat dissipation effect of the heat dissipation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the structure of a heat dissipation device in an embodiment of the present application.

[0037] Figure 2 It is a structural schematic diagram of the connection between the heat dissipation device and the power module in one embodiment of the present application.

[0038] Figure 3 for Figure 1 Partial cross-sectional view of the heat dissipation device.

[0039] Figure 4 This is a schematic diagram of the structure in which the first disturbance member of the present application is arranged on the base.

[0040] Figure 5 This is a schematic diagram of the structure of the second disturbance member of the present application.

[0041] Figure 6 This is a schematic diagram of the structure in which the first disturbance member of the present application is arranged on the shell cover.

[0042] Description of reference numerals:

[0043] 10. heat dissipation device; 100. power module; 110. power module;

[0044] 1. Shell assembly; 2. Disturbance assembly;

[0045] 11. Base; 12. Shell cover;

[0046] 121. Liquid inlet; 122. Liquid discharge port;

[0047] 21. a disturbing member; 22. a first disturbing member; 23. a second disturbing member;

[0048] 211, raised portion; 212, blocking portion;

[0049] 221, first protrusion; 222, first blocking portion; 223, fourth sub-protrusion; 224, first gap; 225, second gap;

[0050] 2211, first sub-protrusion; 2212, second sub-protrusion; 2213, third sub-protrusion;

[0051] 231, second protruding portion; 232, second blocking portion;

[0052] 2311. The fifth sub-protrusion; 2312. The opening. DETAILED DESCRIPTION

[0053] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0054] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0055] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0057] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0059] With the continuous advancement of electronic technology, power modules are becoming more and more important in various applications. Therefore, higher requirements are placed on the performance and reliability of power modules, especially the heat dissipation performance. The heat dissipation device provided in the present application is used to dissipate heat for the target component. It can be understood that the target component can be the above-mentioned power module, and of course, it can also be other heat dissipated components that need heat dissipation. Exemplarily, the heat dissipation device of the present application is described by taking the use of heat dissipation for the power module as an example.

[0060] It should be noted that the applicant has found through research that in the related technology, the heat dissipation method of the power module is mainly improved by optimizing the main thermal resistance parts such as the radiator, thermal interface material and ceramics. Furthermore, from the evolution of the heat dissipation structure of the heat dissipation device, the use of direct water cooling technology can eliminate the thermal interface material layer and improve the heat dissipation efficiency. For example, a shell and multiple protrusions are provided, and multiple protrusion arrays are arranged in the shell to form a pin-fin structure. When the coolant is injected into the shell, the heat dissipation device can greatly increase the flow path of the coolant through the pin-fin-shaped protrusions, thereby increasing the heat dissipation surface area, thereby greatly improving the heat dissipation efficiency. Alternatively, double-sided water cooling technology is used to improve the heat dissipation effect of the power module by providing a second heat dissipation channel on the upper layer of the chip.

[0061] However, the provision of pin-fin-shaped protrusions will, on the one hand, increase the resistance to the flow of the coolant, and the flow rate of the coolant between the pin-fin-shaped protrusions will decrease. During the heat transfer process, the resistance during the flow of the coolant will reduce the effect of the heat transfer of the coolant, and ultimately affect the heat dissipation effect of the heat dissipation device. On the other hand, the shell that accommodates the pin-fin-shaped protrusions needs to use a sealing ring during use, and the sealing ring may leak, affecting the heat dissipation performance. As for the double-sided water cooling technology, on the one hand, the structure of the double-sided water cooling technology is complex, which increases the difficulty of manufacturing; on the other hand, the double-sided water cooling technology will increase the material and manufacturing costs, and the cost in the production process is relatively high.

[0062] Furthermore, based on the above research, the inventors designed a three-dimensional heat dissipation device to further improve the heat dissipation effect of the heat dissipation device.

[0063] See also Figure 1 , Figure 2 and Figure 3 As shown. A heat dissipation device 10 provided in an embodiment of the present application includes a shell component 1 and a disturbance component 2. The shell component 1 includes a base 11 and a shell cover 12; the shell cover 12 is arranged on one side of the base 11, and the shell cover 12 and the base 11 are surrounded to form a receiving cavity; the surface of the base 11 facing the shell cover 12 is configured as a supporting surface. The disturbance component 2 is arranged in the receiving cavity and on the supporting surface, and the disturbance component 2 includes a plurality of disturbance members 21, and the plurality of disturbance members 21 are stacked along the thickness direction of the base 11. In the same disturbance member 21, the disturbance member 21 includes a plurality of protrusions 211 and a plurality of blocking members 212, the extension direction of the protrusion 211 intersects with the extension direction of the blocking member 212, the plurality of protrusions 211 are arranged at intervals along the first direction, and a blocking member 212 is arranged between two adjacent protrusions 211. Among two adjacent disrupting members 21 , the orthographic projection of the protruding portion 211 of one disrupting member 21 on the support surface partially overlaps with the orthographic projection of the blocking portion 212 of the other disrupting member 21 on the support surface.

[0064] Specifically, the housing assembly 1 is the main structure of the heat dissipation device 10. On the one hand, it is used to accommodate the disturbance assembly 2 and provide a working space for the disturbance assembly 2; on the other hand, it is used to connect with the power module 110 to achieve heat dissipation of the power module 110. It should be noted that the accommodating cavity needs to be filled with coolant to achieve heat dissipation of the power module 110 connected to the housing assembly 1. Here, the type of coolant is not limited.

[0065] Furthermore, since the disturbance assembly 2 is disposed in the accommodating cavity and the disturbance assembly 2 includes a plurality of disturbance members 21 , the plurality of disturbance members 21 are stacked along the thickness direction of the base 11 .

[0066] In the process of the coolant flowing through the same disturbance member 21, since a blocking portion 212 is provided between two adjacent protrusions 211 in the same disturbance member 21, and the extension direction of the protrusion 211 intersects with the extension direction of the blocking portion 212, when the coolant flows through the protrusion 211, the blocking portion 212 can block the coolant and change the flow direction of the coolant, thereby increasing the flow speed of the coolant and improving the heat dissipation effect of the heat dissipation device 10.

[0067] Similarly, when the coolant flows through two adjacent disruptors 21, since the orthographic projection of the protrusion 211 of one of the two disruptors 21 on the support surface partially overlaps with the orthographic projection of the blocking portion 212 of the other disruptor 21 on the support surface, when the coolant flows through the protrusion 211 of one of the disruptors 21, the blocking portion 212 of the other disruptor 21 can block the coolant, thereby changing the flow direction of the coolant. At the same time, when the coolant flows through the blocking portion 212 of one of the disruptors 21, the protrusion 211 of the other disruptor 21 can block the coolant, thereby changing the flow direction of the coolant and forming multiple vortices, thereby destroying the laminar flow between the two adjacent disruptors 21 and mixing the adjacent flow layers, so that the coolant forms turbulent flow between the two adjacent disruptors 21, thereby further increasing the flow velocity of the coolant and improving the heat dissipation effect of the heat dissipation device 10.

[0068] For the convenience of explanation, the first direction is Figure 3 The X direction in the figure; the direction intersecting the first direction is the second direction, that is Figure 3 The stacking direction along the thickness direction of the base 11 is the third direction, ie Figure 3 The Z direction in .

[0069] It can be understood that the coolant flows in three directions of XYZ in the heat dissipation device 10, that is, the disturbance component 2 of the present application forms a three-dimensional heat dissipation structure. Based on the above description, it can be known that in the process of the coolant flowing through the same disturbance member 21, the coolant forms turbulence between the protrusion 211 and the blocking portion 212. In the process of the coolant flowing through two adjacent disturbance members 21, the coolant forms turbulence between the two adjacent disturbance members 21, that is, in the process of the coolant flowing in the heat dissipation device 10, turbulence will be formed in the three directions of XYZ.

[0070] Due to the irregular movement and vortex of the coolant, the particles in the coolant are mixed more violently. This mixing effect can more effectively transfer heat from the heat dissipation structure to the coolant, thereby improving the heat exchange efficiency. In addition, due to the irregular movement of turbulence, the temperature difference in the flow field is smaller than that in the laminar state, which means that the heat transfer is more uniform, thereby improving the heat exchange efficiency of the heat dissipation device 10. In addition, since the flow direction of the coolant changes to a direction perpendicular to the flow direction when passing through the protrusion 211 and the blocking portion 212, the stability of the boundary layer is destroyed, making the heat transfer more direct and rapid, reducing thermal resistance, and further improving the heat dissipation effect of the heat dissipation device 10.

[0071] In some embodiments, see Figure 4 As shown, the disturbance member 21 includes a first disturbance member 22. The first disturbance member 22 is disposed on the support surface, the protrusion 211 of the first disturbance member 22 is a first protrusion 221, and the blocking portion 212 of the first disturbance member 22 is a first blocking portion 222; the first protrusion 221 includes a first sub-protrusion 2211, a second sub-protrusion 2212 and a third sub-protrusion 2213, the first sub-protrusion 2211, the second sub-protrusion 2212 and the third sub-protrusion 2213 are arranged at intervals along the second direction, and the second sub-protrusion 2212 is located between the first sub-protrusion 2211 and the third sub-protrusion 2213; on one side of the first blocking portion 222 along the first direction, one of the first protrusions The first sub-protrusion 2211 and the third sub-protrusion 2213 of the part 221 are both connected to the first blocking part 222, and the second sub-protrusion 2212 of the first protrusion part 221 has a first gap 224 with the first blocking part 222 along the first direction; on the other side of the first blocking part 222 along the first direction, the second sub-protrusion 2212 of another first protrusion part 221 is connected to the first blocking part 222, and the first sub-protrusion 2211 and the third sub-protrusion 2213 of the first protrusion part 221 have a first gap 224 with the first blocking part 222 along the first direction; wherein the second direction intersects with the first direction.

[0072] In this way, in the process of the coolant flowing through the first disturbance member 22, the coolant flowing through the first blocking portion 222 can be blocked by the first sub-protrusion 2211, the second sub-protrusion 2212 and the third sub-protrusion 2213 respectively, so that the flow direction of the coolant can be further changed and diverted, so that the coolant forms a more irregular movement and vortex, and a larger number of vortices can be formed, so that the laminar flow is more severely destroyed, resulting in more intense mixing of particles in the coolant, thereby further improving the heat dissipation effect of the heat dissipation device 10.

[0073] In some embodiments, multiple first blocking portions 222 are arranged at intervals along the first direction to form a first blocking portion 222 group, there are multiple first blocking portion 222 groups, and multiple first blocking portion 222 groups are arranged at intervals along the second direction; the first disruptor 22 also includes a fourth sub-protrusion 223; a fourth sub-protrusion 223 is arranged between two adjacent first blocking portions 222 along the second direction, and an extension direction of the fourth sub-protrusion 223 intersects with an extension direction of the first blocking portion 222; along the second direction, a second gap 225 is provided between the fourth sub-protrusion 223 and the first blocking portion 222.

[0074] In this way, when the coolant flows through the blocking portion 212, the coolant can be blocked by the protrusion 211 to change the flow direction of the coolant, and then the coolant forms turbulence between the protrusion 211 and the blocking portion 212, so that the coolant forms more irregular movement and vortex, and a larger number of vortices can be formed, so that the laminar flow is more seriously destroyed, resulting in more intense mixing of particles in the coolant, thereby further improving the heat dissipation effect of the heat dissipation device 10.

[0075] In some embodiments, see Figure 5 As shown, the disruptor 21 further includes a second disruptor 23. The protrusion 211 of the second disruptor 23 is a second protrusion 231, and the blocking portion 212 of the second disruptor 23 is a second blocking portion 232; the second protrusion 231 includes a plurality of fifth sub-protrusions 2311 arranged along the second direction, and all the fifth sub-protrusions 2311 of the second protrusion 231 and two adjacent second blocking portions 232 enclose a plurality of openings 2312, and the plurality of openings 2312 are arranged along the second direction; a portion of the first gap 224 is located within the orthographic projection of the opening 2312 on the support surface.

[0076] In this way, when the coolant flows along the Z direction, when the coolant flows through the first protrusion 221, the coolant can be blocked by the second blocking portion 232 to change the flow direction of the coolant. At the same time, when the coolant flows through the first blocking portion 222, the coolant can be blocked by the fifth sub-protrusion 2311 of the second protrusion 231 to change the flow direction of the coolant, so that the coolant forms a more irregular movement and vortex in the Z direction, and a larger number of vortices can be formed, so that the laminar flow is more severely destroyed, resulting in more intense mixing of particles in the coolant, thereby further improving the heat dissipation effect of the heat dissipation device 10.

[0077] In addition, since all the fifth sub-protrusions 2311 of the second protrusion 231 and the two adjacent second blocking portions 232 are enclosed to form a plurality of openings 2312, the plurality of openings 2312 are arranged along the second direction; part of the first gap 224 is located within the positive projection of the opening 2312 on the supporting surface, so that in the process of the coolant flowing along the Z direction, on the one hand, the coolant can flow smoothly in the Z direction through the openings 2312; on the other hand, the flow in the Z direction can be formed through the openings 2312 while the flow in the X direction and the Y direction can be formed, so that the coolant in the Z direction has a spiral flow direction or an inclined flow direction, thereby increasing the heat dissipation area in the Z direction and improving the heat dissipation effect.

[0078] In some embodiments, there are multiple second disrupting members 23, and the orthographic projections of the multiple second disrupting members 23 on the support surface at least partially do not overlap.

[0079] In this way, since the orthographic projections of the plurality of second disturbance members 23 on the supporting surface are at least partially non-overlapping, the openings 2312 are misaligned during the flow of the coolant along the Z direction, thereby further changing the flow direction of the coolant along the Z direction, thereby further improving the effect of the spiral flow or oblique flow of the coolant in the Z direction, so that the coolant forms a more irregular motion and vortex, and a greater number of vortices can be formed, so that the laminar flow is more severely destroyed, resulting in more intense mixing of particles in the coolant, thereby further improving the heat dissipation effect of the heat dissipation device 10.

[0080] Of course, the present application does not limit the number of second disruptors 23. The present application can select a suitable number of second disruptors 23 according to the overall height of the heat dissipation device 10 and actual processing and production. The number of second disruptors 23 will not be elaborated herein.

[0081] In some embodiments, see Figure 6As shown, there are multiple first disruptors 22, and the multiple first disruptors 22 are distributed on both sides of the second disruptor 23; the orthographic projection of the protrusion 211 of the first disruptor 22 on one side of the second disruptor 23 on the support surface is at least partially overlapped with the orthographic projection of the protrusion 211 of the first disruptor 22 on the other side of the second disruptor 23 on the support surface.

[0082] In this way, the turbulence of the coolant along the three directions of XYZ can be continuously changed by stacking multiple first disturbance members 22 and second disturbance members 23, thereby improving the heat dissipation effect of the heat dissipation device 10. In addition, since there are multiple first disturbance members 22, the turbulence of the coolant can be achieved in a smaller range, thereby further improving the heat exchange efficiency of the coolant.

[0083] In some embodiments, the heat dissipation device 10 also includes a plurality of barriers, which extend along the second direction and are arranged at intervals along the first direction; along the first direction, there are a plurality of disturbance components 2, and a barrier is arranged between two adjacent disturbance components 2; the surface of the shell cover 12 facing the base 11 is configured as a snap-fit ​​surface; the barrier connects the support surface and the snap-fit ​​surface, and a third gap is provided between the barrier and the side wall of the shell cover 12.

[0084] It is understandable that, since the barrier connects the support surface and the buckle surface, and there is a third gap between the barrier and the side wall of the shell cover 12, the coolant can only communicate with the multiple disturbance components 2 through the third gap during the flow. In this way, the multiple disturbance components 2 can be divided into multiple different areas by setting the barrier, and a large amount of coolant flows in the respective areas corresponding to the multiple disturbance components 2, thereby ensuring that the temperature of the coolant in each disturbance component 2 is uniform, and avoiding the situation where the coolant temperature near the liquid inlet 121 is low and the coolant temperature near the liquid outlet 122 is high, thereby improving the heat dissipation effect of each part of the heat dissipation device 10.

[0085] In some embodiments, see Figure 1 As shown, the shell cover 12 includes a liquid inlet 121 and a liquid outlet 122 . The liquid inlet 121 and the liquid outlet 122 are both communicated with the accommodating cavity, and the liquid inlet 121 and the liquid outlet 122 are arranged at intervals.

[0086] In this way, the coolant can be introduced and discharged through the liquid inlet 121 and the liquid outlet 122 respectively, so that the coolant in the accommodating cavity is always controlled at a relatively low temperature, thereby improving the heat dissipation effect of the heat dissipation device 10.

[0087] Optionally, the liquid inlet 121 and the liquid outlet 122 are arranged on the buckling surface of the shell cover 12. In this way, the coolant in the accommodating cavity can be circulated in the X direction and the Y direction through the liquid inlet 121 and the liquid outlet 122, and at the same time, the coolant can be controlled to flow along the Z direction, thereby improving the flow path of the coolant and improving the cooling effect of the coolant.

[0088] Of course, the positions of the liquid inlet 121 and the liquid outlet 122 can be flexibly changed according to the designed flow direction. On the one hand, the flow direction of the coolant in the accommodating cavity can be changed by the positions of the liquid inlet 121 and the liquid outlet 122. On the other hand, it can facilitate the design requirements of the heat dissipation device 10.

[0089] In some embodiments, the housing assembly 1 is an integrally formed structure.

[0090] In this way, since the shell assembly 1 is an integrally formed structure, it can ensure that the coolant is always in the accommodating cavity surrounded by the shell assembly 1, thereby avoiding leakage of the coolant and improving the overall sealing performance of the heat dissipation device 10.

[0091] Optionally, the base 11 and the shell cover 12 are connected by welding, the first disruptor 22 and the second disruptor 23 are connected by welding, the first disruptor 22 on one side of the second disruptor 23 and the base 11 are connected by welding, the first disruptor 22 on the other side of the second disruptor 23 and the top cover are connected by welding, and multiple second disruptors 23 are connected by welding.

[0092] Optionally, during the welding connection process, the welding process used includes but is not limited to stir friction welding, active brazing, or hot pressure welding, etc.; wherein the solder used in the brazing process includes at least one of tin, silver, copper and precious metals (such as titanium).

[0093] In the preparation process, the base 11 and the shell cover 12 can be welded to the disturbance component 2 respectively, and then the base 11 and the shell cover 12 can be welded, so as to further reduce the production process cost and reduce the manufacturing difficulty of the heat dissipation device 10.

[0094] In a second aspect, a power module 100, referring to Figure 1 and Figure 2 As shown, the power module 100 includes a power module 110 and the heat dissipation device 10 in the first aspect, and the heat dissipation device 10 is connected to the power module 110 .

[0095] In this way, the heat dissipation device 10 can be used to dissipate heat from the power module 110, thereby ensuring normal use of the power module 110. At the same time, since the present application can improve the heat dissipation effect of the heat dissipation device 10, the use performance of the power module 110 can be improved.

[0096] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A heat dissipation device, characterized in that: include: A housing assembly, including a base and a housing cover; The shell cover is arranged on one side of the base, and the shell cover and the base are arranged to form a receiving cavity; the surface of the base facing the shell cover is configured as a supporting surface, A disturbance component is disposed in the accommodating cavity and on the supporting surface, wherein the disturbance component comprises a plurality of disturbance members, and the plurality of disturbance members are stacked along the thickness direction of the base; In the same said disturbing member, the said disturbing member comprises a plurality of protrusions and a plurality of blocking portions, the extension direction of the said protrusions intersects with the extension direction of the said blocking portions, the said plurality of protrusions are arranged at intervals along the first direction, and the said blocking portion is arranged between two adjacent said protrusions; In two adjacent disrupting members, an orthographic projection of the protruding portion of one of the disrupting members on the supporting surface partially overlaps with an orthographic projection of the blocking portion of the other disrupting member on the supporting surface.

2. The heat dissipation device according to claim 1, characterized in that: The disturbance element comprises: A first disrupting member is disposed on the supporting surface, wherein the protruding portion of the first disrupting member is a first protruding portion, and the blocking portion of the first disrupting member is a first blocking portion; The first protrusion includes a first sub-protrusion, a second sub-protrusion and a third sub-protrusion, the first sub-protrusion, the second sub-protrusion and the third sub-protrusion are arranged at intervals along the second direction, and the second sub-protrusion is located between the first sub-protrusion and the third sub-protrusion; On one side of the first blocking portion along the first direction, the first sub-protrusion and the third sub-protrusion of one of the first protrusions are connected to the first blocking portion, and a first gap exists between the second sub-protrusion of the first protrusion and the first blocking portion along the first direction; On the other side of the first blocking portion along the first direction, the second sub-protrusion of another first protrusion is connected to the first blocking portion, and the first sub-protrusion and the third sub-protrusion of the first protrusion both have the first gap with the first blocking portion along the first direction; The second direction intersects with the first direction.

3. The heat dissipation device according to claim 2, characterized in that: A plurality of the first blocking portions are arranged at intervals along the first direction to form a first blocking portion group, there are a plurality of the first blocking portion groups, and the plurality of the first blocking portion groups are arranged at intervals along the second direction; The first disturbing member further includes a fourth sub-protrusion; the fourth sub-protrusion is disposed between two adjacent first blocking portions along the second direction, and an extending direction of the fourth sub-protrusion intersects an extending direction of the first blocking portion; Along the second direction, a second gap is formed between the fourth sub-protrusion and the first blocking portion.

4. The heat dissipation device according to claim 2, characterized in that: The disturbance element further comprises: a second disrupting member, wherein the protrusion of the second disrupting member is a second protrusion, and the blocking portion of the second disrupting member is a second blocking portion; The second protrusion includes a plurality of fifth sub-protrusions arranged along the second direction, all the fifth sub-protrusions of the second protrusion and two adjacent second blocking portions enclose a plurality of openings, and the plurality of openings are arranged along the second direction; Part of the first gap is located within the orthographic projection of the opening on the supporting surface.

5. The heat dissipation device according to claim 4, characterized in that: There are a plurality of the second disrupting members, and the orthographic projections of the plurality of the second disrupting members on the support surface at least partially do not overlap.

6. The heat dissipation device according to claim 4, characterized in that: There are a plurality of first disrupting members, and the plurality of first disrupting members are distributed on both sides of the second disrupting member; An orthographic projection of the protrusion of the first disruptor on one side of the second disruptor on the support surface at least partially overlaps with an orthographic projection of the protrusion of the first disruptor on the other side of the second disruptor on the support surface.

7. The heat dissipation device according to any one of claims 2 to 6, characterized in that: The heat dissipation device further comprises a plurality of blocking members, the blocking members extending along the second direction, and the plurality of blocking members arranged at intervals along the first direction; Along the first direction, there are multiple disturbance components, and the blocking member is arranged between two adjacent disturbance components; The surface of the shell cover facing the base is configured as a buckling surface; the blocking member connects the supporting surface and the buckling surface, and a third gap is provided between the blocking member and the side wall of the shell cover.

8. The heat dissipation device according to any one of claims 1 to 6, characterized in that: The shell cover comprises a liquid inlet and a liquid discharge port, both of which are communicated with the accommodating cavity, and the liquid inlet and the liquid discharge port are arranged at intervals.

9. The heat dissipation device according to any one of claims 1 to 6, characterized in that: The housing assembly is an integrally formed structure.

10. A power module, characterized in that: It comprises a power module and the heat dissipation device according to any one of claims 1 to 9, wherein the heat dissipation device is connected to the power module.

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