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

Abstract

The utility model relates to a controller, and provides a power module heat dissipation module, which comprises a plurality of heat dissipation plates, the plurality of heat dissipation plates are sequentially stacked, a power module (6) is arranged between the adjacent heat dissipation plates, water channels are formed in the heat dissipation plates, the adjacent heat dissipation plates are respectively provided with heat dissipation windows (7) communicated with the water channels, and the heat dissipation windows (7) are communicated with the water channels. The heat dissipation windows (7) on the adjacent heat dissipation plates correspond to the two sides of the power module (6) respectively, and the power module (6) blocks the heat dissipation windows (7). The heat dissipation module of the power module has relatively high heat dissipation efficiency, and the power density of the power module can be effectively improved. The utility model further provides a controller, an electric assembly and a vehicle.

Description

Technical Field

[0001] The utility model relates to a controller, in particular to a power module heat dissipation module. In addition, the utility model also relates to a controller, an electric assembly and a vehicle. Background Art

[0002] With the rapid development of electric vehicles, the design requirements for motor controllers are getting higher and higher. The power module is the core component of the controller for power conversion and circuit control. It can improve its efficiency while reducing its size, which can effectively increase the power density. However, when providing power density, the heat generated by the power components during operation becomes more and more, and the heat dissipation requirements of the power module are also increasing.

[0003] In the prior art, the heat dissipation of the power module is achieved by attaching it to a heat sink and coating thermal grease between the two to increase the thermal conductivity. The heat of the chip is transferred to the coolant through the ceramic substrate, copper heat sink, thermal grease and heat sink shell in sequence, passing through a variety of media with different thermal conductivities, which greatly reduces the thermal conductivity efficiency. At the same time, during the operation of scraping and applying the silicone grease, it is scraped and slipped due to its fluidity, resulting in the inability to guarantee the final thickness and uniformity of the silicone grease after coating, and its thermal conductivity efficiency is further affected. Under the limitation of thermal conductivity efficiency, higher power density cannot be achieved. Utility Model Content

[0004] The technical problem to be solved by the first aspect of the utility model is to provide a power module heat dissipation module, which has high heat dissipation efficiency and can effectively improve the power density of the power module.

[0005] The technical problem to be solved by the second aspect of the present invention is to provide a controller, wherein the power module heat dissipation module of the controller has high heat dissipation efficiency and can effectively provide the power density of the power module.

[0006] The technical problem to be solved by the third aspect of the present invention is to provide an electric assembly, wherein the power module heat dissipation module of the electric assembly has high heat dissipation efficiency and can effectively provide the power density of the power module.

[0007] The technical problem to be solved by the fourth aspect of the present invention is to provide a vehicle, wherein the power module heat dissipation module of the vehicle has high heat dissipation efficiency and can effectively provide the power density of the power module.

[0008] In order to solve the above technical problems, the first aspect of the utility model provides a power module heat dissipation module, including multiple heat dissipation plates, which are stacked in sequence, and power modules are arranged between adjacent heat dissipation plates. Water channels are formed inside the heat dissipation plates, and adjacent heat dissipation plates are respectively provided with heat dissipation windows connected to the water channels. The heat dissipation windows on the adjacent heat dissipation plates respectively correspond to the two sides of the power modules, and the power modules block the heat dissipation windows.

[0009] In some specific embodiments of the present invention, opposite sides of the power module are both heat dissipation surfaces, and at least one of the heat dissipation surfaces on both sides of the power module is provided with a heat conductive member, and the heat conductive member is inserted into the water channel through the heat dissipation window.

[0010] In some specific embodiments of the present invention, the heat conducting member is at least one of a heat dissipation pin, a heat dissipation column or a heat dissipation fin.

[0011] In some specific embodiments of the present invention, the heat dissipation surfaces on both sides of the power module are respectively provided with heat conducting plates, and the heat conducting plates and the heat conducting member are integrated.

[0012] In some specific embodiments of the present utility model, the plurality of heat sinks include a head end heat sink and a tail end heat sink, the head end heat sink is provided with a total water inlet pipe and a total water outlet pipe for connecting to a coolant source, the total water inlet pipe and the total water outlet pipe are both connected to the water channels of the head end heat sink and the tail end heat sink.

[0013] In some specific embodiments of the present utility model, one or more intermediate heat sinks are arranged between the head end heat sink and the tail end heat sink, the tail end heat sink is provided with a first tail end connecting tube and a second tail end connecting tube on the side close to the head end heat sink, the intermediate heat sink is provided with a first intermediate connecting tube and a second intermediate connecting tube, the main water inlet pipe is connected to the first tail end connecting tube through the first intermediate connecting tube, and the main water outlet pipe is connected to the second tail end connecting tube through the second intermediate connecting tube.

[0014] In some specific embodiments of the present utility model, the main water inlet pipe, the first intermediate connecting pipe and the first tail end connecting pipe are coaxially arranged, and the main water outlet pipe, the second intermediate connecting pipe and the second tail end connecting pipe are coaxially arranged.

[0015] In some specific embodiments of the present utility model, a positioning groove is provided on one of the two adjacent side surfaces of two adjacent heat sinks, and a positioning boss is provided on the other one, the positioning boss is inserted into the positioning groove, and a first sealing ring is also provided between the positioning boss and the positioning groove, and a channel for connecting the water channels of the two adjacent heat sinks is formed between the positioning boss and the positioning groove; or, the heat sink is provided with a pipe connecting the water channels, the pipes of the two adjacent heat sinks are connected to each other, and a first sealing ring is provided between the pipe openings of the two connected pipes, and a second sealing ring is provided between the two side surfaces of the power module and the corresponding heat dissipation windows.

[0016] In some specific embodiments of the utility model, a clamping connection mechanism is also included, which includes a tightening bolt and a tightening nut. Each of the heat sinks is correspondingly provided with a bolt hole. The tightening bolt passes through the bolt holes on each of the heat sinks in turn and is connected to the tightening nut to tighten the first sealing ring and the second sealing ring.

[0017] In some specific embodiments of the present invention, the compression amount of the first sealing ring is twice the compression amount of the second sealing ring.

[0018] A second aspect of the utility model provides a controller, comprising the power module heat dissipation module described in any one of the above technical solutions.

[0019] A third aspect of the present invention provides an electric assembly, comprising a power module heat dissipation module or a controller according to any one of the above technical solutions.

[0020] A fourth aspect of the present invention provides a vehicle, comprising a power module heat dissipation module, a controller or an electric assembly according to any one of the above technical solutions.

[0021] Through the above scheme, the beneficial effects of the utility model are as follows:

[0022] The power module heat dissipation module of the utility model opens a heat dissipation window connected to the water channel on the heat dissipation plate, so that the heat dissipation surface of the power module can be directly in contact with the coolant. Since there is no thermal grease and the heat dissipation plate shell, the heat dissipation efficiency is greatly increased. During the installation process, there is no need to scrape the thermal grease, which greatly reduces the difficulty of assembly and effectively improves production efficiency.

[0023] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0025] Figure 1 This is a structural schematic diagram of a specific embodiment of the power module heat dissipation module of the utility model;

[0026] Figure 2 This is an exploded view of the components of a specific embodiment of the power module heat dissipation module of the utility model;

[0027] Figure 3 It is a cross-sectional view of a specific embodiment of the power module heat dissipation module of the utility model;

[0028] Figure 4 This is the structural diagram of the heat sink at the first end. Figure 1 ;

[0029] Figure 5 This is the structural diagram of the heat sink at the first end. Figure 2 ;

[0030] Figure 6 This is a schematic diagram of the structure of the heat sink at the rear end Figure 1 ;

[0031] Figure 7 This is a schematic diagram of the structure of the heat sink at the rear end Figure 2 ;

[0032] Figure 8 It is a schematic diagram of the structure of the middle heat sink;

[0033] Fig. 9 It is a structural schematic diagram of a specific implementation of a power module;

[0034] Fig.10 It is a structural schematic diagram of another specific implementation of the power module.

[0035] Description of Reference Numerals

[0036] 1. Head end heat sink; 101. Main water inlet pipe; 102. Main water outlet pipe; 2. Tail end heat sink; 201. First tail end connecting pipe; 202. Second tail end connecting pipe; 3. Middle heat sink; 301. First middle connecting pipe; 302. Second middle connecting pipe; 4. First sealing ring; 5. Second sealing ring; 6. Power module; 601. Base plate; 602. First heat dissipation surface; 603. Second heat dissipation surface; 604. Heat dissipation pin plate; 605. Heat dissipation tunnel plate; 7. Heat dissipation window; 8. Pressing connection mechanism; 801. Bolt hole; 802. Tightening bolt; 803. Tightening nut; A. Positioning groove; B. Positioning boss. DETAILED DESCRIPTION

[0037] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation modes described herein are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the specific implementation modes described below.

[0038] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "formed", "provided with", "set", "connected" and the like should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate medium, a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate connection member, and it can be the internal connection of two elements or the interaction relationship between two elements. 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.

[0039] The utility model provides a power module heat dissipation module, see Figure 1-3 As a specific embodiment of the power module heat dissipation module of the utility model, it includes multiple heat dissipation plates, which are stacked in sequence, and a power module 6 is arranged between adjacent heat dissipation plates. A water channel for accommodating coolant is formed inside the heat dissipation plate, and adjacent heat dissipation plates are respectively provided with heat dissipation windows 7 connected to the water channel. The heat dissipation windows 7 on the adjacent heat dissipation plates correspond to the opposite sides of the power module, respectively. The power module 6 blocks the heat dissipation window 7, so that the heat dissipation surface of the power module 6 can directly contact the coolant inside the heat dissipation plate, and there is no need to set thermal conductive silicone grease. Therefore, in the process of heat transfer from the chip to the coolant, there is no thermal conductive silicone grease and the heat dissipation plate shell, thereby greatly increasing its heat dissipation efficiency, and the setting of the window can also reduce the overall volume and weight, thereby improving the power density of the power module; and during the assembly process, there is no need to scrape the thermal conductive silicone grease, which greatly reduces the difficulty of assembly and effectively improves production efficiency.

[0040] See also Figure 1-Figure 3 The plurality of heat sinks include a head end heat sink 1 and a tail end heat sink 2. The head end heat sink 1 is provided with a main water inlet pipe 101 and a main water outlet pipe 102 for connecting to a cooling liquid source. Both the main water inlet pipe 101 and the main water outlet pipe 102 are connected to the waterways of the head end heat sink 1 and the tail end heat sink 2. As a specific implementation, the head end heat sink 1 can be directly connected to the tail end heat sink 2, so that the power module 6 is sandwiched between the head end heat sink 1 and the tail end heat sink 2, and the coolant only needs to pass through the main water inlet pipe 101 to enter the waterways of the head end heat sink 1 and the tail end heat sink 2 respectively, and contact the heat dissipation surface of the power module 6 through the respective heat dissipation windows 7, and take away the heat, and then discharge through the main water outlet pipe 102.

[0041] It should be noted that there may be multiple power modules 6. For the convenience of arrangement, as another specific implementation, see Figure 1-Figure 3 One or more intermediate heat sinks 3 are arranged between the head end heat sink 1 and the tail end heat sink 2. An appropriate number of intermediate heat sinks 3 can be selected according to design requirements, and the number of power modules 6 between adjacent heat sinks can also be arranged according to space and power, for example, two or one per layer, or three or four per layer, or even more; wherein, a first tail end connecting pipe 201 and a second tail end connecting pipe 202 are arranged on the side of the tail end heat sink 2 close to the head end heat sink 1, and a first intermediate connecting pipe 301 and a second intermediate connecting pipe 302 are arranged on the intermediate heat sink 3, and the main water inlet pipe 101 is connected to the first tail end connecting pipe 201 through the first intermediate connecting pipe 301, The main water outlet pipe 102 is connected to the second tail end connecting pipe 202 through the second intermediate connecting pipe 302, wherein, when a plurality of intermediate heat sinks 3 are provided, after the first intermediate connecting pipes 301 of adjacent intermediate heat sinks 3 are connected to each other, the first intermediate connecting pipes 301 located on both sides are respectively connected to the main water inlet pipe 101 and the first tail end connecting pipe 201, the second intermediate connecting pipes 302 of adjacent intermediate heat sinks 3 are connected to each other, and the second intermediate connecting pipes 302 located on both sides are respectively connected to the main water outlet pipe 102 and the second tail end connecting pipe 202, so that the coolant can enter the head end heat sink 1 and the tail end heat sink 2 respectively through the main water inlet pipe 101. It should be noted that the above-mentioned head end heat sink 1, tail end heat sink 2 and middle heat sink 3 can be formed by a variety of processes, for example, see Figure 4 and Figure 5 The head end heat sink 1 can be assembled in a split configuration by forming the upper and lower cover plates into a whole through a brazing process or a stir friction welding process; or, it can be formed into a whole through a bolt-fitting sealing ring structure; or, it can be formed by integral casting and then machined, thereby effectively ensuring the sealing of the heat sink and avoiding the problem of coolant leakage during use.

[0042] See also Figure 1-Figure 8, the main water inlet pipe 101, the first intermediate connecting pipe 301 and the first tail end connecting pipe 201 are coaxially arranged, and the main water outlet pipe 102, the second intermediate connecting pipe 302 and the second tail end connecting pipe 202 are coaxially arranged, which is convenient for assembly and can effectively reduce the connection length between the pipes, thereby reducing the overall volume of the power module heat dissipation module of the utility model. In addition, the overall pipeline formed after the main water inlet pipe 101, the first intermediate connecting pipe 301 and the first tail end connecting pipe 201 are connected and the overall pipeline formed after the main water outlet pipe 102, the second intermediate connecting pipe 302 and the second tail end connecting pipe 202 are respectively arranged on opposite sides, so that the common side of the water channel of the head end heat sink 1, the middle heat sink 3 and the tail end heat sink 2 is the inlet of the coolant, and the other side is the outlet of the coolant, avoiding heat exchange between the coolant passing through the power module 6 and the coolant not passing through the power module 6, and ensuring the heat dissipation efficiency of the power module heat dissipation module of the utility model.

[0043] During the heat dissipation process, the coolant in the water channel needs to circulate, and the heat sink is provided with a pipe connecting the water channel, which is interconnected through the pipes between adjacent heat sinks, so as to realize the flow of coolant in the water channel of each heat sink. A specific implementation of the pipe connection is that pipes are provided on both sides of the heat sink, and the pipes of two adjacent heat sinks are interconnected; and in order to further improve the assembly efficiency of the power module heat dissipation module of the utility model, as another specific implementation of the pipe connection, one of the two adjacent side surfaces of the two adjacent heat sinks is provided with a positioning groove A, and the other is provided with a positioning boss B matching the positioning groove A, the positioning boss B is inserted into the positioning groove A, and a channel for connecting the water channels of the two adjacent heat sinks is formed between the positioning boss B and the positioning groove A, specifically, see Figure 1-Figure 8 The main water inlet pipe 101, the main water outlet pipe 102, the first intermediate connecting pipe 301 and the second intermediate connecting pipe 302 are all formed with a positioning groove A at the heat sink portion near the end of the tail end heat sink 2, and the first tail end connecting pipe 201, the second tail end connecting pipe 202, the first intermediate connecting pipe 301 and the second intermediate connecting pipe 302 are all formed with a positioning boss B matching the positioning groove A at the pipe openings near the end of the head end heat sink 1. During assembly, the positioning groove A and the positioning boss B are cooperated to achieve the positioning installation of adjacent heat sinks, and the waterways of the two adjacent heat sinks are quickly connected, which is fast and efficient.

[0044] It should be noted that, in order to ensure the sealing performance, in the two specific implementations of the above-mentioned pipe connection, a first sealing ring 4 is arranged between the pipe openings of the two connected pipes, or a first sealing ring 4 is arranged between the positioning groove A of the heat sink and the positioning boss B of the adjacent heat sink, and a second sealing ring 5 is arranged between the heat dissipation surfaces on both sides of the power module 6 and the corresponding heat dissipation windows 7, respectively, and a compression connection mechanism 8 for compressing the first sealing ring 4 and the second sealing ring 5 is arranged between the multiple heat sinks. Specifically, see Figure 1-Figure 3 A first sealing ring 4 is provided at the connection between the main water inlet pipe 101, the first intermediate connecting pipe 301 and the first tail end connecting pipe 201, and a first sealing ring 4 is provided at the connection between the main water outlet pipe 102, the second intermediate connecting pipe 302 and the second tail end connecting pipe 202 to ensure the sealing performance of the pipe port connection between each heat sink. More specifically, the first sealing ring 4 can be set on the positioning groove A or the positioning boss B; a second sealing ring 5 is provided between the heat dissipation surface of the power module 6 and the corresponding heat dissipation window 7 to ensure the sealing between the heat dissipation surface and the heat dissipation window 7, and a compression connection mechanism 8 for compressing the first sealing ring 4 and the second sealing ring 5 is provided between multiple heat sinks to ensure the compression amount of the first sealing ring 4 and the second sealing ring 5 and improve the sealing effect.

[0045] See also Figure 1 , Figure 2 and Figure 4-Figure 8 The clamping connection mechanism 8 includes a tensioning bolt 802 and a tensioning nut 803. Each heat sink is provided with a corresponding bolt hole 801. The tensioning bolt 802 passes through the bolt hole 801 on each heat sink in turn and is connected to the tensioning nut 803, so that the head end heat sink 1 and the tail end heat sink 2 can be clamped. The head end heat sink 1 and the tail end heat sink 2 mutually clamp the middle heat sink 3 located between them to clamp the first sealing ring 4 and the second sealing ring 5 between each heat sink to ensure the sealing effect. It should be noted that the number and position of the tensioning bolts 802 and the corresponding bolt holes 801 can be reasonably set. For example, see Figure 1 and Figure 2 , bolt holes 801 are respectively provided at the four corners of each heat sink, so that the four tension bolts 802 can be used to uniformly apply pressure to the head end heat sink 1 and the tail end heat sink 2, ensuring that the compression of the first sealing ring 4 and the second sealing ring 5 is relatively uniform. It should be noted that the tension bolts 802 are only used as a specific implementation of the compression connection mechanism 8, which is not a limitation on the protection scope of the utility model. It is conceivable that the compression connection mechanism 8 can also be an outer frame structure. After the heat sinks are positioned relative to each other, the outer frame structure is used to compress and fix the heat sinks, squeeze the heat sinks together, and achieve compression of the first sealing ring 4 and the second sealing ring 5.

[0046] In addition, the power module 6 is arranged between two adjacent heat sinks, and a second sealing ring 5 is arranged between the heat sinks on both sides and the corresponding heat sink windows. Considering the influence of the compression of the sealing ring on the sealing performance, the compression of the first sealing ring 4 is designed to be twice the compression of the second sealing ring 5, so that when the adjacent heat sinks are pressed against each other, the first sealing ring 4 reaches the designed compression, and the second sealing ring 5 between the heat sinks on both sides of the power module 6 and the heat sink windows 7 can also reach the designed compression, ensuring effective sealing. Among them, the compression of the sealing ring refers to the difference between the thickness of the sealing ring in the uncompressed state and the thickness of the sealing ring in the compressed state, and the designed compression of the sealing ring refers to the compression required for the sealing ring to ensure the sealing performance. In the direction perpendicular to the heat sink, there is only one first sealing ring 4 between two adjacent heat sinks, but there are two second sealing rings. If the compression amount of the first sealing ring 4 and the second sealing ring 5 is the same, during assembly, the two adjacent heat sinks and the power module are already in contact, but the two heat sinks at both ends will not be in contact due to the small thickness of the first sealing ring, resulting in low assembly accuracy. When the compression amount of the first sealing ring 4 is twice that of the second sealing ring, they will be in contact at the same time during the assembly process, and the assembly accuracy is higher.

[0047] As a specific embodiment of the power module heat dissipation module of the utility model, the two opposite sides of the power module 6 can be set as heat dissipation surfaces, so that the heat dissipation surfaces on both sides are directly in contact with the coolant in the water channel through the heat dissipation window 7, so as to achieve double-sided heat dissipation. In addition, in order to further improve the heat dissipation efficiency of the power module 6, at least one of the heat dissipation surfaces on both sides of the power module 6 is provided with a heat conductive member, which is inserted into the water channel through the heat dissipation window 7, thereby increasing the contact area with the coolant in the water channel and improving the heat exchange efficiency. Among them, the heat conductive member is at least one of a heat dissipation pin, a heat dissipation column or a heat dissipation fin.

[0048] It should be noted that heat conducting plates are respectively arranged on the heat dissipation surfaces on both sides of the power module 6, and the heat conducting plates and the heat conducting member are integrated. For example, the heat dissipation pin and the heat conducting plate can be welded into an integrated member by a vacuum brazing process, thereby forming Figure 8 The heat dissipation pin plate 604 shown is connected to the heat dissipation surface of the power module 6 to conduct away the heat generated by the chip of the power module 6. Fig. 9 and Fig.10The power module 6 includes a substrate 601 on which a chip is arranged. The opposite sides of the substrate 601 are respectively a first heat dissipation surface 602 and a second heat dissipation surface 603. The first heat dissipation surface 602 is provided with a heat dissipation pin plate 604 or a heat dissipation tunnel plate 605 adapted to be installed in the heat dissipation window 7. The second heat dissipation surface 603 is provided with a heat dissipation pin plate 604 or a heat dissipation tunnel plate 605 adapted to be installed in the heat dissipation window 7. The substrate 601 is preferably a ceramic substrate. The heat of the chip is transferred to the heat dissipation pin plate 604 or the heat dissipation tunnel plate 605 through the ceramic substrate. By completely immersing the heat dissipation pin plate 604 or the heat dissipation tunnel plate 605 in the coolant in the water channel, the contact area between the heat dissipation surface and the coolant is increased, thereby improving the heat dissipation efficiency. Among them, the heat dissipation capacity of the heat dissipation tunnel plate 605 is worse than that of the heat dissipation pin plate 604, but the pressure drop is small. It can be selected according to the actual heat dissipation requirements of the power module 6. For example, when the power module 6 has a large power and a large heat generation, such as Fig. 9 As shown, the first heat dissipation surface 602 and the second heat dissipation surface 603 are both provided with heat dissipation pin plates 604; in the case of relatively low heat generation, such as Fig.10 As shown, both the first heat dissipation surface 602 and the second heat dissipation surface 603 are provided with a heat dissipation tunnel plate 605; or, one of the first heat dissipation surface 602 and the second heat dissipation surface 603 is provided with a heat dissipation pin plate 604, and the other is provided with a heat dissipation tunnel plate 605, so as to combine the advantages of both. It can be imagined that the above-mentioned heat dissipation pin plate 603 and heat dissipation tunnel plate 605 are only two preferred immersion heat dissipation structures, which are not a limitation on the protection scope of the utility model. The immersion heat dissipation structure is diverse, and other structural forms, such as an elliptical pin plate, can be selected according to different heat dissipation requirements.

[0049] In order to better understand the technical solution of the present utility model, the following is an explanation in combination with relatively preferred technical features.

[0050] See also Figure 1-Figure 8The power module heat dissipation module of the utility model comprises a head end heat dissipation plate 1, an intermediate heat dissipation plate 3 and a tail end heat dissipation plate 2 which are sequentially stacked, wherein the number of the intermediate heat dissipation plates 3 can be set according to the actual arrangement requirements of the power module 6, the power module 6 is arranged between adjacent heat dissipation plates, the power module 6 is double-sided heat dissipation, and the heat dissipation plate corresponding to the heat dissipation surface of the power module 6 is provided with a heat dissipation window 7 connected to the water channel, so that the heat dissipation needle plate 604 on the heat dissipation surface of the power module 6 can be immersed in the coolant, so as to be able to dissipate the heat of the chip of the power module 6 well, and a second sealing ring 5 is provided between the heat dissipation surface of the power module 6 and the heat dissipation window 7 to ensure the sealing between the two; the head end heat dissipation plate 1 is provided with a total water inlet pipe 101 and a total water outlet pipe 102, the intermediate heat dissipation plate 3 is provided with a first intermediate connecting pipe 301 and a second intermediate connecting pipe 302, the tail end heat dissipation plate 2 is provided with a first tail end connecting pipe 201 and a second tail end connecting pipe 202, the total water inlet pipe 101 is arranged according to the arrangement of the heat dissipation plates According to the arrangement order of the heat sinks, the first tail end connecting pipe 201 is connected in sequence through the first intermediate connecting pipe 301, so that the cooling liquid can be supplied to the water channels of the head end heat sink 1, the middle heat sink 3 and the tail end heat sink 2 through the main water inlet pipe 101, so that the heat generated by the power module 6 is taken away through the heat dissipation window 7. The main water outlet pipe 102 is connected to the second tail end connecting pipe 202 in sequence through the second intermediate connecting pipe 302 according to the arrangement order of the heat sinks, so that the cooling liquid carrying heat in the water channels of the head end heat sink 1, the middle heat sink 3 and the tail end heat sink 2 is discharged from the main water outlet pipe 102; wherein, a first sealing ring 4 is provided at the connection between the above-mentioned pipes, and is connected to the tightening nut 803 through the tightening bolt 802 passing through the bolt hole 801 on each heat sink, so that the heat sinks are pressed against each other, and the compression amount of the first sealing ring 4 is twice the compression amount of the second sealing ring 5, so as to ensure that when the bolts are tightened, the first sealing ring 4 and the second sealing ring 5 both reach the designed compression amount, so as to ensure effective sealing. After the power module heat dissipation module of the utility model is assembled, it can be subjected to air tightness testing to ensure the air tightness of the weld and structure during the tightening process.

[0051] The power module heat dissipation module of the utility model opens a heat dissipation window connected to the water channel on the heat dissipation plate, so that the heat dissipation surface of the power module can be directly in contact with the coolant. In the heat transfer process, the original thermal grease is eliminated, thereby improving the thermal conductivity efficiency. In addition, in the assembly process, it will not be restricted by the flow characteristics and thickness requirements of the thermal grease, thereby avoiding the problem of thickness and uniformity that cannot be guaranteed due to the slippage of the grease during the scraping process. Therefore, the difficulty of assembly is reduced, and the assembly efficiency and product assembly yield are effectively improved.

[0052] In addition, the second aspect of the present invention provides a controller, including the power module heat dissipation module provided by the present invention, and therefore, has all its beneficial effects, which will not be repeated here.

[0053] The third aspect of the present invention provides an electric assembly, including the power module heat dissipation module or controller provided by the present invention, and therefore, has all its beneficial effects, which will not be elaborated here.

[0054] The fourth aspect of the utility model provides a vehicle, including the power module heat dissipation module, controller or electric assembly provided by the utility model, and therefore, has all the beneficial effects thereof, which will not be elaborated here.

[0055] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0057] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A power module heat dissipation module, characterized in that: The invention comprises a plurality of heat dissipation plates, wherein the plurality of heat dissipation plates are stacked in sequence, a power module (6) is arranged between adjacent heat dissipation plates, a water channel is formed inside the heat dissipation plates, adjacent heat dissipation plates are respectively provided with heat dissipation windows (7) connected to the water channel, the heat dissipation windows (7) on the adjacent heat dissipation plates respectively correspond to two sides of the power module (6), and the power module (6) blocks the heat dissipation windows (7).

2. The power module heat dissipation module according to claim 1, characterized in that: The opposite sides of the power module (6) are both heat dissipation surfaces, and at least one of the heat dissipation surfaces on the two sides of the power module (6) is provided with a heat conducting member, and the heat conducting member is inserted into the water channel through the heat dissipation window (7).

3. The power module heat dissipation module according to claim 2, characterized in that: The heat conducting member is at least one of a heat dissipation pin, a heat dissipation column or a heat dissipation fin.

4. The power module heat dissipation module according to claim 2, characterized in that: The heat dissipation surfaces on both sides of the power module are respectively provided with heat conducting plates, and the heat conducting plates and the heat conducting member are integrated.

5. The power module heat dissipation module according to claim 1, characterized in that: The plurality of heat sinks include a head end heat sink (1) and a tail end heat sink (2); the head end heat sink (1) is provided with a main water inlet pipe (101) and a main water outlet pipe (102) for connecting to a cooling liquid source; the main water inlet pipe (101) and the main water outlet pipe (102) are both in communication with water channels of the head end heat sink (1) and the tail end heat sink (2).

6. The power module heat dissipation module according to claim 5, characterized in that: One or more intermediate heat sinks (3) are arranged between the head end heat sink (1) and the tail end heat sink (2); a first tail end connecting pipe (201) and a second tail end connecting pipe (202) are arranged on the side of the tail end heat sink (2) close to the head end heat sink (1); the intermediate heat sink (3) is provided with a first intermediate connecting pipe (301) and a second intermediate connecting pipe (302); the main water inlet pipe (101) is connected to the first tail end connecting pipe (201) via the first intermediate connecting pipe (301); and the main water outlet pipe (102) is connected to the second tail end connecting pipe (202) via the second intermediate connecting pipe (302).

7. The power module heat dissipation module according to claim 6, characterized in that: The main water inlet pipe (101), the first intermediate connecting pipe (301) and the first tail end connecting pipe (201) are coaxially arranged, and the main water outlet pipe (102), the second intermediate connecting pipe (302) and the second tail end connecting pipe (202) are coaxially arranged.

8. The power module heat dissipation module according to claim 1, characterized in that: One of the two adjacent side surfaces of two adjacent heat sinks is provided with a positioning groove (A), and the other is provided with a positioning boss (B), the positioning boss (B) is inserted into the positioning groove (A), and a first sealing ring (4) is provided between the positioning boss (B) and the positioning groove (A), and a channel for connecting the water channel of the two adjacent heat sinks is formed between the positioning boss (B) and the positioning groove (A); or, the heat sink is provided with a pipe connecting the water channel, the pipes of the two adjacent heat sinks are connected to each other, and a first sealing ring (4) is provided between the pipe openings of the two connected pipes, and second sealing rings (5) are respectively provided between the two side surfaces of the power module (6) and the corresponding heat sink window (7).

9. The power module heat dissipation module according to claim 8, characterized in that: It also includes a clamping connection mechanism (8), the clamping connection mechanism (8) including a tightening bolt (802) and a tightening nut (803), each of the heat dissipation plates is correspondingly provided with a bolt hole (801), the tightening bolt (802) sequentially passes through the bolt hole (801) on each of the heat dissipation plates and is connected to the tightening nut (803) to clamp the first sealing ring (4) and the second sealing ring (5).

10. The power module heat dissipation module according to claim 8 or 9, characterized in that: The compression amount of the first sealing ring (4) is twice the compression amount of the second sealing ring (5).

11. A controller, characterized in that: A power module heat dissipation module comprising any one of claims 1-10.

12. An electric assembly, characterized in that: It comprises the power module heat dissipation module according to any one of claims 1 to 10 or the controller according to claim 11.

13. A vehicle, characterized in that: It comprises the power module heat dissipation module according to any one of claims 1 to 10, the controller according to claim 11 or the electric assembly according to claim 12.

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