Power module heat dissipation assembly, controller, driving assembly and vehicle

Abstract

The utility model discloses a power module heat dissipation assembly, a controller, a driving assembly and a vehicle, the power module heat dissipation assembly comprises a power module, a first heat dissipation channel and a second heat dissipation channel, the first heat dissipation channel and the second heat dissipation channel are arranged on two sides of the power module, the first heat dissipation channel is communicated with a first water inlet hole, and the second heat dissipation channel is communicated with a second water inlet hole. A second water inlet hole is communicated between the first water inlet hole and the second heat dissipation channel; the distance between the axis of the first water inlet hole and the axis of the second water inlet hole is L1, the diameter of the first water inlet hole is D1, and L1 / D1 is larger than or equal to 0.2 and smaller than or equal to 0.35, so that the uniformity of the flow of condensed water in the upper water channel and the lower water channel is facilitated, and the uniformity of heat dissipation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation design of power modules, and more specifically, to a power module heat dissipation component, a controller, a drive assembly and a vehicle. Background Art

[0002] Existing power modules usually use thermally conductive silicone ester coated on both sides of the module, which is installed between two layers of heat dissipation channels to achieve module heat dissipation, and the upper and lower radiators are connected by a sealing ring. During heat dissipation, condensed water is introduced through the water inlet, part of which passes through the lower heat dissipation channel and is discharged through the water outlet; the other part of the condensed water flows upward through the channel into the upper heat dissipation channel, and then is discharged through the water outlet, thereby achieving double-sided heat dissipation of the power module.

[0003] However, based on the existing structural design, the condensation water flow rate of the upper heat dissipation water channel is often greater than the condensation water flow rate of the lower heat dissipation water channel, making the heat dissipation effect of the upper heat dissipation water channel better than that of the lower heat dissipation water channel, resulting in uneven heat dissipation effect on both sides of the power module. Utility Model Content

[0004] One purpose of the utility model is to provide a new technical solution for a power module heat dissipation component, a controller, a drive assembly and a vehicle.

[0005] The utility model provides a power module heat dissipation component, comprising:

[0006] Power module;

[0007] A first heat dissipation channel and a second heat dissipation channel are located on both sides of the power module, the first heat dissipation channel is connected to the first water inlet hole, and the second water inlet hole is connected between the first water inlet hole and the second heat dissipation channel;

[0008] The distance between the axis of the first water inlet hole and the axis of the second water inlet hole is L1, and the diameter of the first water inlet hole is D1, wherein 0.2≤L1 / D1≤0.35.

[0009] Optionally, the first heat dissipation channel is also connected to a first water outlet, and a second water outlet is also connected between the first water outlet and the second heat dissipation channel, the distance between the axis of the first water outlet and the axis of the second water outlet is L2, and the diameter of the first water outlet is D2, wherein 0.2≤L2 / D2≤0.35.

[0010] Optionally, L1=L2, D1=D2.

[0011] Optionally, L1 / D1=0.3.

[0012] Optionally, L2 / D2=0.3.

[0013] Optionally, a first heat dissipation structure and a second heat dissipation structure are further included, and the first heat dissipation structure and the second heat dissipation structure are respectively arranged on two sides of the power module.

[0014] Optionally, the first heat dissipation structure includes:

[0015] A first bottom plate, the first bottom plate is arranged close to the power module;

[0016] a first cover plate, the first cover plate being arranged on a side of the first base plate facing away from the power module, the first cover plate being welded to the first base plate;

[0017] A first heat sink is disposed between the first cover plate and the first base plate, two opposite side surfaces of the first heat sink are respectively welded to the first base plate and the first cover plate, and the first base plate, the first cover plate and the first heat sink together form the first heat dissipation channel.

[0018] Optionally, the second heat dissipation structure includes:

[0019] a second bottom plate, the second bottom plate being arranged opposite to the first bottom plate, the power module being located between the first bottom plate and the second bottom plate, and opposite sides of the power module being welded to the first bottom plate and the second bottom plate respectively;

[0020] a second cover plate, the second cover plate being arranged on a side of the second bottom plate facing away from the power module, the second cover plate being welded to the second bottom plate;

[0021] A second heat sink is disposed between the second cover plate and the second base plate, two opposite side surfaces of the second heat sink are respectively welded to the second base plate and the second cover plate, and the second base plate, the second cover plate and the second heat sink together form the second heat dissipation channel.

[0022] Optionally, the first cover plate is provided with the first water inlet hole and the first water outlet hole.

[0023] Optionally, a first connecting column is provided on the first bottom plate, and a third connecting column is provided on the second bottom plate, and the first connecting column and the third connecting column are matched to form the second water inlet hole.

[0024] Optionally, a second connecting column is provided on the first bottom plate, a fourth connecting column is provided on the second bottom plate, and the second connecting column and the fourth connecting column are matched to form the second water outlet.

[0025] The utility model also provides a controller, comprising the above-mentioned power module heat dissipation component.

[0026] The utility model also provides a driving assembly, comprising the above-mentioned controller.

[0027] The utility model also provides a vehicle, comprising the above-mentioned drive assembly.

[0028] The power module heat dissipation component of the utility model includes a power module, a first heat dissipation channel and a second heat dissipation channel located on both sides of the power module, the first heat dissipation channel is connected to a first water inlet hole, and the first water inlet hole and the second heat dissipation channel are connected to a second water inlet hole; the distance between the axis of the first water inlet hole and the axis of the second water inlet hole is L1, and the diameter of the first water inlet hole is D1, wherein 0.2≤L1 / D1≤0.35, which is conducive to the uniformity of the condensed water flow in the upper and lower waterways (the first heat dissipation channel and the second heat dissipation channel), thereby ensuring the uniformity of heat dissipation and further improving the heat dissipation effect.

[0029] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0031] Figure 1 It is a schematic diagram of the condensed water flow direction of the power module heat dissipation assembly according to an embodiment of the utility model;

[0032] Figure 2 is a structural exploded diagram of a power module heat dissipation assembly according to an embodiment of the utility model;

[0033] Figure 3 is a cross-sectional view of a power module heat dissipation assembly according to an embodiment of the utility model;

[0034] Figure 4 is a partial cross-sectional view of a power module heat dissipation assembly according to an embodiment of the utility model;

[0035] Figure 5 It is a structural schematic diagram of a first heat sink of a power module heat sink assembly according to an embodiment of the utility model;

[0036] Figure 6 It is a structural schematic diagram of a power module heat dissipation assembly according to an embodiment of the utility model;

[0037] Figure 7 It is a diagram of the difference in flow rates of upper and lower waterways corresponding to different staggered distances between the first water inlet hole and the second water inlet hole of the power module heat dissipation assembly according to an embodiment of the utility model;

[0038] Figure 8 It is a waterway trace diagram of a power module heat dissipation assembly according to an embodiment of the utility model;

[0039] Fig. 9 This is another waterway trace diagram of the power module heat dissipation assembly according to an embodiment of the utility model.

[0040] Reference numerals:

[0041] 100. Power module heat dissipation component;

[0042] 10. Power module;

[0043] 20. First bottom plate; 21. First connecting column; 22. Second connecting column;

[0044] 30. Second bottom plate; 31. Third connecting column; 32. Fourth connecting column;

[0045] 40. first cover plate; 41. first water inlet hole; 42. first water outlet hole; 43. first accommodating cavity;

[0046] 50. first heat sink; 51. first fin body; 52. second fin body; 53. first heat dissipation channel;

[0047] 60. A second heat dissipation element; 61. A second heat dissipation channel;

[0048] 70. Second cover plate;

[0049] 81. Second water inlet hole; 82. Second water outlet hole;

[0050] 91. Solder; 92. Water inlet pipe; 93. Water outlet pipe. DETAILED DESCRIPTION

[0051] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0052] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0053] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0054] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0055] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0056] In the specification and claims of the utility model, if the term "first" or "second" is involved, it may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the related objects are in an "or" relationship.

[0057] In the description of the present invention, it should be understood that 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do 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 should not be understood as a limitation on the present invention.

[0058] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" involved should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0059] The power module heat dissipation assembly 100 according to the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0060] like Figures 1 to 4 As shown, the utility model provides a power module heat dissipation assembly 100, comprising:

[0061] Power module 10;

[0062] A first heat dissipation channel 53 and a second heat dissipation channel 61 are located on both sides of the power module 10, wherein the first heat dissipation channel 53 is connected to the first water inlet hole 41, and a second water inlet hole 81 is connected between the first water inlet hole 41 and the second heat dissipation channel 61;

[0063] The distance between the axis of the first water inlet hole 41 and the axis of the second water inlet hole 81 is L1, and the diameter of the first water inlet hole 41 is D1, wherein 0.2≤L1 / D1≤0.35.

[0064] like Figures 1 to 3 As shown, a first heat dissipation channel 53 is provided on one side of the power module 10, and the first heat dissipation channel 53 is respectively connected with the first water inlet hole 41 and the first water outlet hole 42. The first water inlet hole 41 and the first water outlet hole 42 can be respectively connected to the opposite sides of the first heat dissipation channel 53. Condensed water is introduced into the first heat dissipation channel 53 through the first water inlet hole 41, and then discharged through the first water outlet hole 42, which can achieve rapid heat dissipation of the power module 10. The heat dissipation efficiency is not affected by factors such as material or thermal resistance, thereby improving the heat dissipation efficiency and reliability of the product.

[0065] like Figures 1 to 3 As shown, a second heat dissipation channel 61 is provided on the other side of the power module 10, and the second water inlet hole 81 is respectively connected with the first water inlet hole 41 and the second heat dissipation channel 61. Condensed water is introduced through the first water inlet hole 41, and a part of the condensed water passes through the first heat dissipation channel 53 and is discharged through the first water outlet hole 42 to achieve heat dissipation on the bottom surface of the power module 10. After the other part of the condensed water is introduced into the second heat dissipation channel 61 through the second water inlet hole 81, it is discharged through the first water outlet hole 42 to achieve heat dissipation on the top surface of the power module 10, thereby achieving double-sided heat dissipation of the power module 10, further improving the overall heat dissipation efficiency of the product.

[0066] On this basis, in the embodiment of the utility model, the distance between the axis of the first water inlet hole 41 and the axis of the second water inlet hole 81 is set to L1, and the diameter of the first water inlet hole 41 is set to D1, wherein 0.2≤L1 / D1≤0.35. That is, along the vertical axis, the staggered distance between the first water inlet hole 41 and the second water inlet hole 81 is between 20% and 35% of the radial dimension of the first water inlet hole 41, that is, the staggered distance between the first water inlet hole 41 and the second water inlet hole 81 is maintained between 20% and 35% of the radial dimension of the first water inlet hole 41, so that the first water inlet hole 41 and the second water inlet hole 81 are not directly connected in the vertical direction, but are staggered by a certain horizontal distance. The staggered distance can be used to reduce the flow rate of condensed water flowing into the upper water channel (that is, the second heat dissipation channel 61), which is beneficial to the uniformity of the flow rate of condensed water in the upper and lower water channels (the first heat dissipation channel 53 and the second heat dissipation channel 61), thereby ensuring the uniformity of heat dissipation, and is beneficial to achieving uniform speed, uniform flow, and uniform heat, and rapid heat exchange, thereby further improving the heat dissipation effect.

[0067] In addition, setting 0.2≤L1 / D1≤0.35, that is, the offset distance between the first water inlet hole 41 and the second water inlet hole 81 is between 20% and 35% of the radial dimension of the first water inlet hole 41, can also avoid the flow rate of condensed water in the upper water channel (that is, the second heat dissipation channel 61) being too low due to the offset distance between the first water inlet hole 41 and the second water inlet hole 81 being too large, and also improves the reliability of heat dissipation on the top surface of the power module 10.

[0068] Among them, the cross-section of the first water inlet hole 41 is generally circular, that is, along the vertical axis, the staggered distance between the first water inlet hole 41 and the second water inlet hole 81 is maintained between 20% and 35% of the diameter of the first water inlet hole 41, which is beneficial to the uniformity of the condensed water flow in the upper and lower water channels (the first heat dissipation channel 53 and the second heat dissipation channel 61), thereby improving the heat dissipation effect.

[0069] Optionally, the first heat dissipation channel 53 is also connected to the first water outlet hole 42, and the second water outlet hole 82 is also connected between the first water outlet hole 42 and the second heat dissipation channel 61, the distance between the axis of the first water outlet hole 42 and the axis of the second water outlet hole 82 is L2, and the diameter of the first water outlet hole 42 is D2, wherein 0.2≤L2 / D2≤0.35.

[0070] like Figures 1 to 3 As shown, the second water outlet hole 82 is connected to the first water outlet hole 42 and the second heat dissipation channel 61 respectively. Condensed water is introduced into the first water inlet hole 41, and a part of the condensed water passes through the first heat dissipation channel 53 and is discharged through the first water outlet hole 42 to achieve heat dissipation on the bottom surface of the power module 10. Another part of the condensed water is introduced into the second heat dissipation channel 61 and the second water outlet hole 82 through the second water inlet hole 81, and finally discharged through the first water outlet hole 42 to achieve heat dissipation on the top surface of the power module 10, thereby achieving double-sided heat dissipation of the power module 10, further improving the overall heat dissipation efficiency of the product.

[0071] In addition, the distance between the axis of the first water outlet hole 42 and the axis of the second water outlet hole 82 is set to L2, and the diameter of the first water outlet hole 42 is D2, wherein 0.2≤L2 / D2≤0.35. That is, along the vertical axis, the offset distance between the first water outlet hole 42 and the second water outlet hole 82 is between 20% and 35% of the radial dimension of the first water outlet hole 42, that is, the offset distance between the first water inlet hole 41 and the second water inlet hole 81 is maintained between 20% and 35% of the radial dimension of the first water inlet hole 41, and the offset distance between the first water outlet hole 42 and the second water outlet hole 82 is maintained between 20% and 35% of the radial dimension of the first water outlet hole 42, which is conducive to the uniformity of the condensed water flow in the upper and lower waterways (the first heat dissipation channel 53 and the second heat dissipation channel 61), thereby further improving the heat dissipation effect.

[0072] Among them, the radial size of the first water outlet hole 42 is generally the same as the radial size of the first water inlet hole 41, which can facilitate the opening of the first water inlet hole 41 and the first water outlet hole 42 on the first heat dissipation structure, and also facilitate the connection and replacement of the water inlet pipe 92 and the water outlet pipe 93.

[0073] Optionally, L1=L2, D1=D2.

[0074] like Figure 1 and Figure 2 As shown, the embodiment of the utility model can set the diameter D1 of the first water inlet hole 41 to be the same as the diameter D2 of the first water outlet hole 42. On the one hand, it can improve the convenience of the process of opening the first water inlet hole 41 and the first water outlet hole 42 on the first heat dissipation structure, and also facilitate the connection and replacement of the water inlet pipe 92 and the water outlet pipe 93; on the other hand, setting the diameter D1 of the first water inlet hole 41 to be the same as the diameter D2 of the first water outlet hole 42 can also facilitate the staggered arrangement of the second water inlet hole 81 and the second water outlet hole 82.

[0075] Furthermore, the distance L1 between the axis of the first water inlet hole 41 and the axis of the second water inlet hole 81 is set equal to the distance L2 between the axis of the first water outlet hole 42 and the axis of the second water outlet hole 82. For example, along the vertical axis (i.e., perpendicular to the extension direction of the heat dissipation channel), the second water inlet hole 81 and the second water outlet hole 82 are symmetrically distributed, and the first water inlet hole 41 and the first water outlet hole 42 are symmetrically distributed, which can also improve the structural symmetry of the power module heat dissipation assembly 100.

[0076] Optionally, L1 / D1=0.3.

[0077] like Figure 7 As shown, the horizontal axis is the percentage of the offset distance between the first water inlet hole 41 and the second water inlet hole 81 and the radial size of the first water inlet hole 41 (i.e., L1 / D1), and the vertical axis is the corresponding percentage of the difference in flow rate between the upper and lower waterways. It can be seen that when L1 / D1=0.3, that is, the offset distance between the first water inlet hole 41 and the second water inlet hole 81 is 30% of the radial size of the first water inlet hole 41, the difference in the condensed water flow rate in the upper and lower waterways (the first heat dissipation channel 53 and the second heat dissipation channel 61) is small, that is, the heat dissipation uniformity is better at this time, which is conducive to achieving uniform speed, uniform flow, uniform heat, rapid heat exchange, and better heat dissipation effect.

[0078] Referring to Table 1 below, it can be seen that when L1 / D1=0.3, that is, when the offset distance between the first water inlet hole 41 and the second water inlet hole 81 is 30% (±30%) of the radial dimension of the first water inlet hole 41, the difference in condensed water flow between the first heat dissipation channel 53 and the second heat dissipation channel 61 is small, that is, the flow equalization effect of the power module heat dissipation assembly 100 is better.

[0079] Table 1: Flow table of water supply and drainage sections at different axis intersection distances

[0080]

[0081] Figure 8 The condensed water flow trace diagram of the first heat dissipation channel 53 and the second heat dissipation channel 61 is shown when L1 / D1=0.3, that is, the offset distance between the first water inlet hole 41 and the second water inlet hole 81 is 30% (±30%) of the radial dimension of the first water inlet hole 41; Fig. 9 The condensation water flow trajectory diagram of the first heat dissipation channel 53 and the second heat dissipation channel 61 is shown when L1 / D1=0.8, that is, the offset distance between the first water inlet hole 41 and the second water inlet hole 81 is 80% (±80%) of the radial size of the first water inlet hole 41. It can also be seen that when L1 / D1=0.3, that is, the offset distance between the first water inlet hole 41 and the second water inlet hole 81 is 30% (±30%) of the radial size of the first water inlet hole 41, the difference in condensation water flow between the first heat dissipation channel 53 and the second heat dissipation channel 61 is small, that is, the power module heat dissipation assembly 100 has a better flow equalization effect.

[0082] Optionally, L2 / D2=0.3.

[0083] Similarly, the embodiment of the utility model is set at L2 / D2=0.3, that is, on the axis along the vertical direction, when the staggered distance between the first water outlet 42 and the second water outlet 82 is 30% of the radial dimension of the first water outlet 42, the difference in the condensed water flow rate in the upper and lower water channels (the first heat dissipation channel 53 and the second heat dissipation channel 61) is small, that is, the heat dissipation uniformity is better at this time, which is conducive to achieving uniform speed, uniform flow, uniform heat, rapid heat exchange, and better heat dissipation effect.

[0084] In yet another embodiment, when L1 / D1=0.3 and L2 / D2=0.3, that is, on the vertical axis, the staggered distance between the first water inlet hole 41 and the second water inlet hole 81 is 30% of the radial dimension of the first water inlet hole 41, and the staggered distance between the first water outlet hole 42 and the second water outlet hole 82 is 30% of the radial dimension of the first water outlet hole 42, the difference in the condensed water flow rate in the upper and lower water channels (the first heat dissipation channel 53 and the second heat dissipation channel 61) is the smallest, that is, the heat dissipation uniformity is the best at this time, which is conducive to achieving uniform speed, uniform flow, uniform heat, rapid heat exchange, and the best heat dissipation effect.

[0085] Optionally, the first water inlet hole 41 is located outside the second water inlet hole 81 , the first water outlet hole 42 is located outside the second water outlet hole 82 , and the first water inlet hole 41 and the first water outlet hole 42 are symmetrically arranged.

[0086] like Figure 1 and Figure 2As shown, in the embodiment of the utility model, the first water inlet hole 41 is arranged on the outside of the second water inlet hole 81, the first water outlet hole 42 is arranged on the outside of the second water outlet hole 82, and the first water inlet hole 41 and the first water outlet hole 42 are symmetrically arranged, and the second water inlet hole 81 and the second water outlet hole 82 can be staggered with the first water inlet hole 41 and the first water outlet hole 42 along the vertical axis to improve the flow equalization effect of the first heat dissipation channel 53 and the second heat dissipation channel 61. At the same time, the first water inlet hole 41 and the first water outlet hole 42 located on the outside can also facilitate the arrangement of the water inlet pipe 92 and the water outlet pipe 93, thereby reducing the production difficulty of the power module heat dissipation assembly 100.

[0087] Optionally, the power module heat dissipation assembly 100 further includes a first heat dissipation structure and a second heat dissipation structure, and the first heat dissipation structure and the second heat dissipation structure are respectively arranged on two sides of the power module 10 .

[0088] like Figure 1 , Figure 2 and Figure 6 As shown, in the embodiment of the utility model, the first heat dissipation structure and the second heat dissipation structure are arranged on both sides of the power module 10. The first heat dissipation structure and the second heat dissipation structure can dissipate heat from both sides of the power module 10, thereby improving the heat dissipation efficiency of the power module heat dissipation assembly 100. In addition, the first heat dissipation structure, the second heat dissipation structure and the power module 10 can be sealed and connected to form a structural part, which is easy to assemble and has low assembly process requirements, which is conducive to improving production efficiency and facilitating automated installation.

[0089] like Figure 1 and Figure 2 As shown, the first heat dissipation structure is provided with a first water inlet hole 41 and a first water outlet hole 42, the first water inlet hole 41 is connected to the water inlet pipe 92, and the first water outlet hole 42 is connected to the water outlet pipe 93. By providing the first water inlet hole 41 and the first water outlet hole 42 on the first heat dissipation structure, it is convenient to introduce or export the circulating condensed water in the first heat dissipation structure (the flow direction of the condensed water is shown in FIG. Figure 1 direction of the arrow).

[0090] In addition, a second water inlet hole 81 that is interconnected is provided between the first heat dissipation structure and the second heat dissipation structure. The second water inlet hole 81 is respectively connected with the first water inlet hole 41 and the second heat dissipation channel 61. Condensed water is introduced into the first heat dissipation structure through the first water inlet hole 41, and a part of the condensed water passes through the first heat dissipation channel 53 of the first heat dissipation structure and is discharged through the first water outlet hole 42 to achieve heat dissipation of the bottom surface of the power module 10. Another part of the condensed water is introduced into the second heat dissipation structure through the second water inlet hole 81, passes through the second heat dissipation channel 61 of the second heat dissipation structure, and is discharged through the first water outlet hole 42 to achieve heat dissipation of the top surface of the power module 10, thereby achieving double-sided heat dissipation of the power module 10, further improving the overall heat dissipation efficiency of the product.

[0091] Optionally, the first heat dissipation structure includes:

[0092] A first bottom plate 20, wherein the first bottom plate 20 is disposed close to the power module 10;

[0093] A first cover plate 40, wherein the first cover plate 40 is disposed on a side of the first base plate 20 facing away from the power module 10, and the first cover plate 40 is welded to the first base plate 20;

[0094] The first heat sink 50 is disposed between the first cover plate 40 and the first base plate 20. Two opposite side surfaces of the first heat sink 50 are respectively welded to the first base plate 20 and the first cover plate 40. The first base plate 20, the first cover plate 40 and the first heat sink 50 together form the first heat dissipation channel 53.

[0095] like Figure 2 As shown, the first base plate 20 is arranged close to the power module 10, and the first cover plate 40 is installed on the side of the first base plate 20 facing away from the power module 10. The first cover plate 40 is sealed and connected to the first base plate 20, for example, by welding to achieve sealing. The first cover plate 40 is provided with a first accommodating cavity 43, and the first cover plate 40 is provided with a first water inlet hole 41 and a first water outlet hole 42. The first water inlet hole 41 is connected to the water inlet pipe 92, and the first water outlet hole 42 is connected to the water outlet pipe 93. By providing the first water inlet hole 41 and the first water outlet hole 42 on the first cover plate 40, it is convenient to introduce or export the circulating condensed water in the first cover plate 40 (refer to the flow direction of the condensed water). Figure 1 direction of the arrow).

[0096] The first heat sink 50 is installed in the first accommodating cavity 43, and two opposite sides of the first heat sink 50 are respectively sealed and connected to the first bottom plate 20 and the first cover plate 40. The first heat sink 50 is sealed and connected to the first bottom plate 20 and the first cover plate 40, such as by welding, to achieve sealing, which can improve sealing efficiency and reduce leakage risk.

[0097] The first base plate 20, the first cover plate 40 and the first heat sink 50 jointly form a first heat dissipation channel 53, which is respectively connected to the first water inlet hole 41 and the first water outlet hole 42. The first water inlet hole 41 and the first water outlet hole 42 can be respectively located on opposite sides of the first cover plate 40. Condensed water is introduced into the first heat dissipation channel 53 through the first water inlet hole 41 and then discharged through the first water outlet hole 42, thereby realizing rapid heat dissipation of the power module 10. The heat dissipation efficiency is not affected by factors such as material or thermal resistance, thereby improving the heat dissipation efficiency and reliability of the product.

[0098] Optionally, the second heat dissipation structure includes:

[0099] A second bottom plate 30, wherein the second bottom plate 30 is arranged opposite to the first bottom plate 20, the power module 10 is located between the first bottom plate 20 and the second bottom plate 30, and opposite sides of the power module 10 are welded to the first bottom plate 20 and the second bottom plate 30 respectively;

[0100] A second cover plate 70, wherein the second cover plate 70 is disposed on a side of the second bottom plate 30 facing away from the power module 10, and the second cover plate 70 is welded to the second bottom plate 30;

[0101] The second heat sink 60 is disposed between the second cover plate 70 and the second base plate 30. Two opposite side surfaces of the second heat sink 60 are respectively welded to the second base plate 30 and the second cover plate 70. The second base plate 30, the second cover plate 70 and the second heat sink 60 together form the second heat dissipation channel 61.

[0102] like Figure 2 As shown, the second base plate 30 is arranged opposite to the first base plate 20, and the power module 10 is installed between the first base plate 20 and the second base plate 30. In addition, two opposite sides of the power module 10 can be connected to the first base plate 20 and the second base plate 30 respectively. The first base plate 20, the second base plate 30 and the power module 10 can be welded to form a sealed connection and form a structural member, which is easy to assemble and has low assembly process requirements, which is conducive to improving production efficiency and facilitating automated installation.

[0103] The two opposite sides of the power module 10 can be welded and sealed with the first base plate 20 and the second base plate 30 respectively through the solder 91. The power module 10 is welded between the first base plate 20 and the second base plate 30 by double-sided welding, and then the whole package is performed to ensure a more stable structure and higher reliability. At the same time, welding sealing can save sealing parts such as sealing rings, and has good sealing performance without leakage risk.

[0104] The second cover plate 70 is provided with a second accommodating cavity. The second heat sink 60 is provided in the second accommodating cavity, and two opposite sides of the second heat sink 60 are welded to the second cover plate 70 and the second base plate 30 respectively to be sealed. The first base plate 20, the second base plate 30, the power module 10, the first cover plate 40 and the second cover plate 70 can be sealed and connected to form a structural member, which is easy to assemble and has low assembly process requirements, which is conducive to improving production efficiency and facilitating automated installation.

[0105] The second base plate 30, the second cover plate 70 and the second heat sink 60 together form a second heat dissipation channel 61. The first base plate 20 and the second base plate 30 are provided with a second water inlet hole 81 and a second water outlet hole 82 which are interconnected. The second water inlet hole 81 is respectively connected with the first water inlet hole 41 and the second heat dissipation channel 61, and the second water outlet hole 82 is respectively connected with the first water outlet hole 42 and the second heat dissipation channel 61. The condensed water is introduced into the first cover plate 40 through the first water inlet hole 41, and a part of the condensed water passes through the first heat dissipation channel 53 and is discharged through the first water outlet hole 42 to achieve heat dissipation of the bottom surface of the power module 10. The other part of the condensed water is introduced into the second cover plate 70 through the second water inlet hole 81, passes through the second heat dissipation channel 61 and the second water outlet hole 82, and is finally discharged through the first water outlet hole 42 to achieve heat dissipation of the top surface of the power module 10, thereby achieving double-sided heat dissipation of the power module 10, further improving the overall heat dissipation efficiency of the product.

[0106] In the present invention, the first cover plate 40, the first base plate 20 and the second base plate 30 can be made of copper, aluminum, copper-aluminum composite materials or copper-aluminum transition plates, etc., which further saves costs without reducing heat dissipation performance.

[0107] Optionally, two opposite side surfaces of the first heat dissipation element 50 are respectively sealed to the first base plate 20 and the first cover plate 40 , and two opposite sides of the second heat dissipation element 60 are respectively sealed to the second cover plate 70 and the second base plate 30 .

[0108] Specifically, the two opposite sides of the first heat sink 50 of the present invention can be welded and sealed with the first base plate 20 and the first cover plate 40 by solder 91. The welding and sealing method can help improve the heat conduction efficiency, and welding has a longer service life and better heat dissipation efficiency than heat-conducting materials.

[0109] Similarly, two opposite sides of the second heat sink 60 are respectively welded and sealed with the second bottom plate 30 and the second cover plate 70. The welding and sealing method can help improve the heat conduction efficiency, and welding has a longer service life and better heat dissipation efficiency than heat conductive materials.

[0110] Optionally, the first heat sink 50 is a heat sink fin, which includes a first fin body 51 and a second fin body 52, and the first fin body 51 and the second fin body 52 are stacked, wherein the first fin body 51 is sealed to the first cover plate 40, and the second fin body 52 is sealed to the first base plate 20, and the first heat dissipation channel 53 is provided in the first fin body 51 and the second fin body 52.

[0111] like Figure 3 and Figure 5As shown, the first heat sink 50 of the utility model embodiment can adopt heat dissipation fins, which are mainly composed of a first fin body 51 and a second fin body 52. ​​The first fin body 51 and the second fin body 52 are stacked to divide the heat dissipation fins into two layers, further increasing the contact surface of the water flow, making the heat dissipation area larger, and helping to further improve the heat dissipation effect. Among them, the first fin body 51 is sealed and connected to the first cover plate 40, and the second fin body 52 is sealed and connected to the first bottom plate 20, so as to improve the sealing of the first heat sink 50 with the first cover plate 40 and the first bottom plate 20 to prevent leakage. The first heat dissipation channel 53 is provided in the first fin body 51 and the second fin body 52, and the first water inlet hole 41 and the first water outlet hole 42 can be connected to the first heat dissipation channel 53 of the first fin body 51 and the second fin body 52 respectively, so as to ensure that the condensed water circulates and dissipates heat to the power module 10 in the first heat dissipation channel 53, thereby improving the heat dissipation efficiency.

[0112] In the present invention, the heat dissipation fins may be in a corrugated shape or in a pin-fin shape. Or a combination of the two may be used. The cross-sections of the first fin body 51 and the second fin body 52 in the heat dissipation fins may be designed to be rectangular, arc-shaped, elliptical, diamond-shaped or other suitable shapes. The specific shapes of the cross-sections of the first fin body 51 and the second fin body 52 may be reasonably selected according to actual needs, and will not be described in detail in the present invention.

[0113] Optionally, the second heat sink 60 and the first heat sink 50 are the same structural components.

[0114] Specifically, the embodiment of the utility model sets the second heat sink 60 and the first heat sink 50 as the same structural member. In other words, the first heat sink 50 and the second heat sink 60 can use the same heat sink, and the first heat sink 50 and the second heat sink 60 can both be heat sink fins. The first heat sink 50 and the second heat sink 60 can be made of materials such as copper, aluminum, copper-aluminum composite materials and copper-aluminum transition plates according to actual needs. When using copper-aluminum composite materials, copper-aluminum composite plates with different thickness ratios can be selected for manufacturing according to different heat dissipation requirements, thereby reducing costs while ensuring performance.

[0115] Optionally, the first cover plate 40 is provided with the first water inlet hole 41 and the first water outlet hole 42 .

[0116] like Figure 1 and Figure 2As shown, condensed water is introduced into the inner side of the first cover plate 40 through the first water inlet hole 41, and a part of the condensed water passes through the first heat dissipation channel 53 and is discharged through the first water outlet hole 42 to achieve heat dissipation on the bottom surface of the power module 10. Another part of the condensed water is introduced into the second cover plate 70 through the second water inlet hole 81, passes through the second heat dissipation channel 61 and the second water outlet hole 82, and is finally discharged through the first water outlet hole 42 to achieve heat dissipation on the top surface of the power module 10, thereby achieving double-sided heat dissipation of the power module 10, further improving the overall heat dissipation efficiency of the product.

[0117] Optionally, a first connecting column 21 is disposed on the first bottom plate 20 , and a third connecting column 31 is disposed on the second bottom plate 30 . The first connecting column 21 cooperates with the third connecting column 31 to form the second water inlet hole 81 .

[0118] Optionally, a second connecting column 22 is disposed on the first bottom plate 20 , and a fourth connecting column 32 is disposed on the second bottom plate 30 . The second connecting column 22 cooperates with the fourth connecting column 32 to form the second water outlet 82 .

[0119] like Figure 2 As shown, the embodiment of the utility model is provided with a first connecting column 21 and a second connecting column 22 on the first bottom plate 20, and a third connecting column 31 and a fourth connecting column 32 on the second bottom plate 30. Among them, the first connecting column 21 corresponds to the third connecting column 31, and the first connecting column 21 and the third connecting column 31 can be welded and sealed to form a second water inlet hole 81, and the second connecting column 22 corresponds to the fourth connecting column 32, and the second connecting column 22 and the fourth connecting column 32 can be welded and sealed to form a second water outlet hole 82. The first connecting column 21 and the third connecting column 31, and the second connecting column 22 and the fourth connecting column 32 are respectively welded and sealed at the connection using solder 91, which reduces the use of sealing rings, reduces the risk of leakage of the heat dissipation water channel, and improves safety performance.

[0120] Of course, for those skilled in the art, the specific structure and working principle of the power module heat dissipation assembly 100 are understandable and achievable, and will not be described in detail in the present invention.

[0121] The utility model also provides a controller, comprising the above-mentioned power module heat dissipation component.

[0122] The utility model also provides a driving assembly, comprising the above-mentioned controller.

[0123] The utility model also provides a vehicle, comprising the above-mentioned drive assembly.

[0124] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A power module heat dissipation assembly (100), characterized in that: include: Power module (10); A first heat dissipation channel (53) and a second heat dissipation channel (61) are located on both sides of the power module (10), wherein the first heat dissipation channel (53) is in communication with the first water inlet hole (41). A second water inlet hole (81) is connected between the first water inlet hole (41) and the second heat dissipation channel (61); The distance between the axis of the first water inlet hole (41) and the axis of the second water inlet hole (81) is L1, and the diameter of the first water inlet hole (41) is D1, wherein 0.2≤L1 / D1≤0.

35.

2. The power module heat dissipation assembly (100) according to claim 1, characterized in that: The first heat dissipation channel (53) is also connected to a first water outlet hole (42), and a second water outlet hole (82) is also connected between the first water outlet hole (42) and the second heat dissipation channel (61), the distance between the axis of the first water outlet hole (42) and the axis of the second water outlet hole (82) is L2, and the diameter of the first water outlet hole (42) is D2, wherein 0.2≤L2 / D2≤0.

35.

3. The power module heat dissipation assembly (100) according to claim 2, characterized in that: L1=L2, D1=D2.

4. The power module heat dissipation assembly (100) according to claim 1, characterized in that: L1 / D1=0.

3.

5. The power module heat dissipation assembly (100) according to claim 2, characterized in that: L2 / D2=0.

3.

6. The power module heat dissipation assembly (100) according to claim 2, characterized in that: It also comprises a first heat dissipation structure and a second heat dissipation structure, wherein the first heat dissipation structure and the second heat dissipation structure are respectively arranged on two sides of the power module (10).

7. The power module heat dissipation assembly (100) according to claim 6, characterized in that: The first heat dissipation structure comprises: A first base plate (20), the first base plate (20) being arranged close to the power module (10); A first cover plate (40), the first cover plate (40) being arranged on a side of the first base plate (20) facing away from the power module (10), the first cover plate (40) being welded to the first base plate (20); A first heat sink (50), the first heat sink (50) is arranged between the first cover plate (40) and the first base plate (20), two opposite side surfaces of the first heat sink (50) are respectively welded to the first base plate (20) and the first cover plate (40), and the first base plate (20), the first cover plate (40) and the first heat sink (50) together form the first heat dissipation channel (53).

8. The power module heat dissipation assembly (100) according to claim 7, characterized in that: The second heat dissipation structure comprises: a second bottom plate (30), the second bottom plate (30) being arranged opposite to the first bottom plate (20), the power module (10) being located between the first bottom plate (20) and the second bottom plate (30), and opposite sides of the power module (10) being welded to the first bottom plate (20) and the second bottom plate (30) respectively; a second cover plate (70), the second cover plate (70) being arranged on a side of the second base plate (30) facing away from the power module (10), the second cover plate (70) and the second base plate (30) being connected by welding, A second heat sink (60), wherein the second heat sink (60) is disposed between the second cover plate (70) and the second base plate (30), two opposite side surfaces of the second heat sink (60) are respectively welded to the second base plate (30) and the second cover plate (70), and the second base plate (30), the second cover plate (70) and the second heat sink (60) together form the second heat dissipation channel (61).

9. The power module heat dissipation assembly (100) according to claim 7, characterized in that: The first cover plate (40) is provided with the first water inlet hole (41) and the first water outlet hole (42).

10. The power module heat dissipation assembly (100) according to claim 8, characterized in that: The first bottom plate (20) is provided with a first connecting column (21), the second bottom plate (30) is provided with a third connecting column (31), and the first connecting column (21) and the third connecting column (31) are matched to form the second water inlet hole (81).

11. The power module heat dissipation assembly (100) according to claim 8, characterized in that: The first bottom plate (20) is provided with a second connecting column (22), the second bottom plate (30) is provided with a fourth connecting column (32), and the second connecting column (22) and the fourth connecting column (32) are matched to form the second water outlet hole (82).

12. A controller, characterized in that: A power module heat dissipation assembly (100) comprising any one of claims 1 to 11.

13. A drive assembly, characterized in that: Comprising a controller as claimed in claim 12.

14. A vehicle, characterized in that: Comprising the drive assembly as claimed in claim 13.

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