阅读说明：本技术 一种支架及功率模块 (Support and power module ) 是由 谢健兴 杨宁 詹洪桂 陈晓仪 林宇珊 袁毅凯 于 2020-12-07 设计创作，主要内容包括：本发明公开了一种支架及功率模块,该支架包括两根以上的流道管和两块以上的流道板；流道管具有沿轴向贯穿设置的主流道以及贯穿流道管的侧壁的分流道；流道板包括本体和两个以上的滑套,本体的内部具有散热流道,滑套设置在对应的本体上,且滑套具有贯穿滑套的侧壁并与对应的本体的散热流道连通的连接流道；两根以上的流道管的轴线相互平行；流道板上的任一个滑套配合在对应的一根流道管上,且滑套上的连接流道与对应的流道管上的对应的分流道连通。该支架根据需求灵活调节相邻流道板之间的距离,可适配不同厚度的功率器件；通过调节流道板的数量,可适用于具有不同功率器件数量的功率模块,具有良好的装配便利性。(The invention discloses a bracket and a power module, wherein the bracket comprises more than two runner pipes and more than two runner plates; the runner pipe is provided with a main runner which penetrates through the runner pipe along the axial direction and a sub-runner which penetrates through the side wall of the runner pipe; the runner plate comprises a body and more than two sliding sleeves, the body is internally provided with a heat dissipation runner, the sliding sleeves are arranged on the corresponding bodies, and the sliding sleeves are provided with connecting runners which penetrate through the side walls of the sliding sleeves and are communicated with the heat dissipation runners of the corresponding bodies; the axes of more than two runner pipes are parallel to each other; any sliding sleeve on the runner plate is matched on a corresponding runner pipe, and the connecting runner on the sliding sleeve is communicated with the corresponding sub-runner on the corresponding runner pipe. The bracket can flexibly adjust the distance between the adjacent runner plates according to requirements, and can be adapted to power devices with different thicknesses; the number of the runner plates is adjusted, so that the power module is suitable for power modules with different power devices, and the assembly convenience is good.)

1. A support is characterized by comprising more than two runner pipes and more than two runner plates;

the runner pipe is provided with a main runner which axially penetrates through the runner pipe and branch runners which penetrate through the side wall of the runner pipe, and the number of the branch runners on the runner pipe corresponds to the number of the runner plates;

the runner plate comprises a body and more than two sliding sleeves, the body is internally provided with a heat dissipation runner, the sliding sleeves are arranged on the corresponding bodies, and the sliding sleeves are provided with connecting runners which penetrate through the side walls of the sliding sleeves and are communicated with the heat dissipation runners of the corresponding bodies;

the axes of the more than two runner pipes are parallel to each other, and the number of the sliding sleeves in one runner plate corresponds to the number of the runner pipes;

any one of the sliding sleeves on the runner plate is matched with a corresponding runner pipe, and the connecting runner on the sliding sleeve is communicated with the corresponding runner on the corresponding runner pipe.

2. The bracket according to claim 1, wherein an elastic member is provided between any two adjacent flow field plates among the two or more flow field plates, and both ends of the elastic member are respectively connected to the corresponding adjacent two flow field plates.

3. The stent of claim 1, wherein the sub-runners are elongated slot structures extending in an axial direction of the corresponding runner tube.

4. The bracket of claim 1, wherein the outer walls of the two axial ends of the sliding sleeve are respectively provided with connecting threads, and the two axial ends of the sliding sleeve are respectively provided with a plurality of notches from the end surface;

any one end of the sliding sleeve forms a plurality of clamping pieces based on a plurality of corresponding gaps, and the clamping pieces are clamped on the runner pipe based on locking screws.

5. The bracket as claimed in claim 4, wherein the locking screw is provided with a retaining structure extending towards the direction of the corresponding runner pipe on one side axially away from the corresponding sliding sleeve;

and a sealing gasket is arranged between the clamping structure and the sliding sleeve corresponding to the locking screw.

6. The stent of claim 1, wherein the runner tube is formed based on a plurality of sections of unit tube connections.

7. The bracket of claim 1, wherein the runner plate is integrally formed with the runner tube by sliding the runner plate along at least one of the two or more runner plates.

8. The stent of claim 1, wherein the stent further comprises an electrical connection post;

the electric connecting column is arranged on one side of the runner plate, and the axis of the electric connecting column is parallel to the axis of the runner pipe;

the electric connecting column is provided with an electric connecting groove along the axial direction, and a connecting circuit is arranged on the inner wall of the electric connecting groove;

the electric connection groove is provided with a plurality of electric connection openings, and the opening direction of the electric connection openings faces one side of the runner plate.

9. The stent of claim 8, further comprising a plurality of connecting members;

the connecting member is provided with a slider on a side facing the electrical connection post, the slider extending into the electrical connection groove from a corresponding one of the electrical connection openings and being slidably fitted in the electrical connection groove;

the connecting component is provided with a connector on one side facing the runner plate, the connector is provided with a matching groove with an opening facing the runner plate, and the inner wall of the matching groove is provided with a metal elastic sheet;

the metal elastic sheet is electrically connected with the connecting circuit.

10. A power module comprising the support of any one of claims 1 to 9 and a plurality of power devices;

any power device in the plurality of power devices is arranged between two adjacent runner plates in the plurality of runner plates, and the top surface and the bottom surface of any power device in the plurality of power devices are respectively contacted with the two corresponding runner plates.

11. The power module of claim 10, wherein the overhang pin in any one of the plurality of power devices is electrically connected to the connection line of the corresponding electrical connection post.

12. The power module of claim 11, wherein the protruding pin of any one of the plurality of power devices is electrically connected to the corresponding connection line of the electrical connection post based on the corresponding mating slot.

Technical Field

The invention relates to the field of electronic elements, in particular to a bracket and a power module.

Background

In recent years, with the development of power electronic systems towards high frequency and high power density, the application of double-sided packaged power devices is more and more frequent, the traditional planar heat sink used by the heat electronic systems has the defects of large volume, heavy weight, complex terminal installation and the like, and the common clip type heat sink is not suitable for double-sided packaged power devices with different thicknesses because the heat sinks are arranged in a welding and fixing mode and the space between the heat sinks cannot be changed, so the heat sink structure of the double-sided packaged power devices is inconvenient in practical application, and therefore the heat sink structure of the double-sided packaged power devices needs to be redesigned.

Disclosure of Invention

Aiming at the defects of the existing heat dissipation structure, the invention provides a bracket and a power module, wherein the bracket flexibly adjusts the distance between adjacent runner plates according to the requirements and can be adapted to power devices with different thicknesses; the support can correspondingly adjust the number of the runner plates and place the power devices in the two adjacent runner plates according to the number change of the power devices in the power module so as to form the power module with a laminated structure, and the power module has good practicability and assembly convenience.

Correspondingly, the bracket provided by the invention comprises more than two runner pipes and more than two runner plates;

the runner pipe is provided with a main runner which penetrates through the runner pipe along the axial direction and branch runners which penetrate through the side wall of the runner pipe, and the number of the branch runners on the runner pipe corresponds to the number of the runner plates;

the runner plate comprises a body and more than two sliding sleeves, the body is internally provided with a heat dissipation runner, the sliding sleeves are arranged on the corresponding bodies, and the sliding sleeves are provided with connecting runners which penetrate through the side walls of the sliding sleeves and are communicated with the heat dissipation runners of the corresponding bodies;

the axes of the more than two runner pipes are parallel to each other, and the number of the sliding sleeves in the runner plate is corresponding to that of the runner pipes;

any one of the sliding sleeves on the runner plate is matched with a corresponding runner pipe, and the connecting runner on the sliding sleeve is communicated with the corresponding runner on the corresponding runner pipe.

In an optional implementation manner, an elastic member is disposed between any two adjacent flow channel plates in the two or more flow channel plates, and two ends of the elastic member are respectively connected to the two corresponding adjacent flow channel plates.

In an optional embodiment, the sub-runners are elongated slot structures extending along the axial direction of the corresponding runner pipes;

and the sliding sleeves corresponding to the sub-channels can slide in a preset movement interval along the corresponding channel pipes.

In an optional implementation mode, the outer walls of the two axial ends of the sliding sleeve are respectively provided with a connecting thread, and the two axial ends of the sliding sleeve are respectively provided with a plurality of notches from the end surface;

one end of the sliding sleeve is divided into a plurality of clamping pieces based on a plurality of corresponding gaps, and the clamping pieces are clamped on the runner pipe based on locking screws.

In an optional embodiment, one side of the locking screw, which is axially far away from the corresponding sliding sleeve, is provided with a clamping structure extending towards the direction of the corresponding runner pipe;

and a sealing gasket is arranged between the clamping structure and the sliding sleeve corresponding to the locking screw.

In an alternative embodiment, the runner pipe is formed based on a plurality of sections of unit pipes connected together.

In an optional embodiment, the sliding sleeve and the corresponding runner pipe are of an integral structure.

In an alternative embodiment, the stand further comprises an electrical connection post;

the electric connecting column is arranged on one side of the runner plate, and the axis of the electric connecting column is parallel to the axis of the runner pipe;

the electric connecting column is provided with an electric connecting groove along the axial direction, and a connecting circuit is arranged on the inner wall of the electric connecting groove;

the electric connection groove is provided with a plurality of electric connection openings, and the opening direction of the electric connection openings faces one side of the runner plate.

In an alternative embodiment, the stent further comprises a plurality of connecting members;

the connecting member is provided with a slider on a side facing the electrical connection post, the slider extending into the electrical connection groove from a corresponding one of the electrical connection openings and being slidably fitted in the electrical connection groove;

the connecting component is provided with a connector on one side facing the runner plate, the connector is provided with a matching groove with an opening facing the runner plate, and the inner wall of the matching groove is provided with a metal elastic sheet;

the metal elastic sheet is electrically connected with the connecting circuit.

Correspondingly, the invention provides a power module, which comprises any one bracket and a plurality of power devices;

any power device in the plurality of power devices is arranged between two adjacent runner plates in the plurality of runner plates, and the top surface and the bottom surface of any power device in the plurality of power devices are respectively contacted with the two corresponding runner plates.

In an optional embodiment, the protruding pins in any one of the power devices are electrically connected to the corresponding connecting lines of the electrical connecting posts.

In an optional embodiment, the protruding pins in any one of the power devices are electrically connected to the corresponding connection lines of the electrical connection posts based on the corresponding mating slots.

In summary, the embodiment of the invention provides a bracket and a power module, wherein the bracket can be well adapted to various power devices with different thicknesses through a runner plate structure with adjustable space, so that the adaptation range of the power devices is improved; aiming at the runner plate structure with the adjustable space, the structure of the runner pipe and the related structure is correspondingly improved, so that the whole support can be cooled based on cooling liquid, and the heat dissipation performance of the support is improved; the arrangement of the electric connecting column and the related structure is beneficial to the connection of the overhanging pins of the power device, and the assembly efficiency of the power module is accelerated.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of a power module according to an embodiment of the invention;

fig. 2 is a schematic top view of a power module according to an embodiment of the invention;

FIG. 3 is a schematic cross-sectional view of a power module of an embodiment of the invention;

fig. 4 is a schematic front view of a power module according to an embodiment of the invention;

fig. 5 is a schematic cross-sectional structure diagram of a D-D cross section of a power module according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

FIG. 1 illustrates a three-dimensional structural diagram of a power module of an embodiment of the invention;

FIG. 2 illustrates a schematic top view of a power module according to an embodiment of the present invention;

fig. 3 is a schematic sectional structure view of a cross section a-a of a power module according to an embodiment of the present invention, which is a symmetrical structure and is drawn with corresponding omission;

FIG. 4 illustrates a front view structural schematic diagram of a power module of an embodiment of the present invention;

fig. 5 shows a schematic cross-sectional structure of a D-D section of a power module according to an embodiment of the invention, with corresponding omission drawings, since this view is mainly intended to show the internal structure of the electrical connection posts.

Specifically, the invention provides a power module, which comprises a support and a power device 30, specifically, the power device 30 is a chip with an overhanging pin 301, the overhanging pin 301 is led out from a side surface of the power device 30, and a top surface and a bottom surface of the power device 30 are flat surfaces for adapting to the support of the embodiment of the invention.

Accordingly, referring to fig. 1 of the drawings, the bracket according to the embodiment of the present invention includes two or more flow channel tubes 20 and two or more flow channel plates 10.

Referring to fig. 3, the runner pipe 20 has a main runner 210 axially penetrating therethrough and a branch runner 211 penetrating through a sidewall of the runner pipe, and the number of the branch runners 211 on the runner pipe 20 corresponds to the number of the runner plates 10.

The runner plate 10 includes a body 101 and two or more sliding sleeves 102, the body 101 has a heat dissipation runner 110 inside, the sliding sleeves 102 are disposed on the corresponding body 101, and the sliding sleeves 102 have a connection runner 111 penetrating through the side wall of the sliding sleeve 102 and communicating with the heat dissipation runner 110 of the corresponding body 101. Specifically, the structural features of sliding sleeve 102 according to the embodiment of the present invention include: a connecting flow passage 111 having an axial through hole to be fitted with the flow passage tube 20 and penetrating the sidewall for communicating the heat radiating flow passage 110 with the sub-flow passage 211; it can be seen that, in essence, the sliding sleeve 102 can be understood as an opening on the body 101, the opening having a corresponding connecting flow passage 111; for convenience of description, the embodiment of the present invention is disassembled into two independent parts, namely, the body 101 and the sliding sleeve 102.

Referring to fig. 1 of the drawings, the axes of the two or more flow passages 20 are parallel to each other, the number of the sliding sleeves 102 in the flow passage plate 10 is set corresponding to the number of the flow passage pipes 20, specifically, the corresponding setting here means that, theoretically, the sliding sleeves 102 are essentially the outlets or inlets of the heat dissipation flow passages 110, and the number of the sliding sleeves 102 on the flow passage plate 10 is designed, the structural setting of the sliding sleeves 102 and the heat dissipation flow passages 110 is related, and in particular, in use, in order to achieve the best heat dissipation effect of the structure of the heat dissipation flow passages 110, each sliding sleeve 102 is required to be used; accordingly, in order to fully utilize each runner 102, each runner 102 should have a runner tube 20 corresponding thereto; in specific implementation, when the optimal heat dissipation effect is not required, theoretically, for the heat dissipation flow channel 110, only at least one inlet and at least one outlet are needed to meet the use requirement, correspondingly, the number of the sliding sleeves 102 to be used is at least two (the redundant sliding sleeves 102 can be plugged by plugging holes), and correspondingly, the number of the corresponding flow channel pipes 20 is at least two. Therefore, the corresponding relationship in the embodiment of the present invention is determined according to the actual use requirement.

Referring to fig. 3, any one of the sliding sleeves 102 of the runner plate 10 is fitted to a corresponding one of the runner pipes 20, and the connection runner 111 of the sliding sleeve 102 is communicated with a corresponding branch runner 211 of the corresponding runner pipe 20.

In specific implementation, the distance between two adjacent runner plates 10 can be adjusted within a certain range according to the size of the power device 30, so that the top surface and the bottom surface of the power device 30 can be attached to the corresponding runner plates, different types of power modules can be flexibly assembled by using the support with the same model size, and the power device has good adaptive performance and assembly convenience.

Further, in order to ensure the adhesion tightness between the power device 30 and the flow channel plate, optionally, an elastic member 40 is disposed between any two adjacent flow channel plates 10 in the two or more flow channel plates 10, and two ends of the elastic member 40 are respectively connected to the corresponding two adjacent flow channel plates 10. Specifically, in order to ensure uniformity of the acting force, the number of the elastic members 40 may be two or more, and the arrangement positions of the elastic members 40 may be uniformly distributed around the power device 30.

Further, referring to fig. 3 of the drawings, in order to ensure communication between the branch channels 211 and the corresponding connection channels 111, optionally, the branch channels 211 are long groove structures extending along the axial direction of the corresponding channel pipes 20 (the long grooves of the long groove structures are associated with the movable sections of the corresponding sliding sleeves); the sliding sleeve 102 corresponding to the branch channel 211 can slide in a preset movement range along the corresponding channel pipe 20, and correspondingly, the branch channel 211 is always communicated with the connecting channel 111 in the sliding process of the sliding sleeve 102.

Further, referring to fig. 3 of the drawings, in order to ensure the connection stability of the runner plate 10 and the runner pipe 20 (after the power module is assembled), the outer walls of the two axial ends of the sliding sleeve 102 are respectively provided with a connecting thread, and the two axial ends of the sliding sleeve 102 are respectively provided with a plurality of notches from the end surface;

one end of the sliding sleeve 102 is divided into a plurality of clamping pieces based on a plurality of corresponding gaps, and due to the existence of the gaps, the plurality of clamping pieces slightly expand outwards (or are attached to the runner pipe) in an unconstrained state, so that no large constraint force exists between the clamping pieces and the runner pipe; when sliding sleeve 102 needs to fix its position on runner pipe 20, the plurality of clips are clamped on runner pipe 20 based on locking screws 201.

Correspondingly, as the locking screw 201 is matched with the connecting thread to achieve a certain waterproof function, the water cooling liquid is not easy to leak at the connecting position of the locking screw 201 and the connecting thread, and correspondingly, the water cooling liquid is easy to leak at the other side of the locking screw 201 corresponding to the corresponding connecting thread; therefore, optionally, the locking screw 201 is provided with a locking structure extending towards the direction of the corresponding runner pipe 20 on a side axially away from the corresponding sliding sleeve 102; a sealing washer 202 is arranged between the clamping structure and the sliding sleeve 102 corresponding to the locking screw 201 to prevent the water-cooling liquid from flowing out from the side.

Further, as can be seen from the above description, the flow channel plate 10 of the rack according to the embodiment of the present invention may be increased in an unlimited amount according to the requirement, and accordingly, only the length of the flow channel pipe 20 needs to be changed, and accordingly, in order to facilitate adjusting the length of the flow channel pipe 20, optionally, the flow channel pipe 20 may be formed by connecting a plurality of sections of unit pipes, and in a specific implementation, the flow channel pipe 20 with a required length is formed by connecting a corresponding number of unit pipes according to the requirement, so as to improve the assembly convenience of the power module.

Further, since the distance adjustment between two adjacent runner plates 10 can be realized by moving one runner plate 10, the other runner plate 10 can be fixed to the runner pipe 20, and optionally, the sliding sleeve 102 is integrated with the corresponding runner pipe 20 (as shown in the bottom runner plate structure in fig. 3).

In addition, it should be noted that, two ends of the main flow channel 210 may be closed according to implementation, and only one end is reserved as an inlet or an outlet of the cooling liquid, and in actual use, the cooling liquid is introduced into the main flow channel 210 of the at least one flow channel tube 20, and after passing through the heat dissipation flow channel of the flow channel plate, the cooling liquid flows out from the main flow channel 210 of the at least one flow channel tube 20, so as to realize circulation of the cooling liquid.

Specifically, the bracket with the above structure solves the heat dissipation problem of the power device, in the specific implementation, since the power device further needs to be electrically connected with an external circuit, correspondingly, in order to facilitate the external electrical connection, optionally, referring to fig. 1 and 5 of the drawings, the bracket further includes an electrical connection column 50; the electrical connection post 50 is disposed at one side of the flow channel plate 10, and the axis of the electrical connection post 50 is parallel to the axis of the flow channel tube 20; the electrical connection post 50 is provided with an electrical connection groove 501 along the axial direction, and a connection line 503 is provided on the inner wall of the electrical connection groove 501 (the connection line is only shown by a thick solid line to indicate the circuit trend, and the specific implementation structure can be implemented according to the actual situation); the electrical connection groove 501 is provided with a plurality of electrical connection openings 502, and the opening direction of the electrical connection openings 502 faces one side of the flow channel plate 10.

In a specific implementation, the outward extending pins 301 of the power device 30 can directly extend into the electrical connection slots 501 to contact with the corresponding connection lines 503 for conduction.

Accordingly, in order to facilitate the connection between the overhang pins 301 of the power device 30 and the electrical connection posts 50, the cradle further includes a number of connection members 60.

The connecting member 60 is provided with a slider 601 at a side facing the electrical connection post 50, the slider 601 protrudes into the electrical connection groove 501 from a corresponding one of the electrical connection openings 502 and is slidably fitted in the electrical connection groove 501; the connecting member 60 is provided with a connector 602 on a side facing the flow channel plate 10, the connector 602 has a fitting groove with an opening facing the flow channel plate 10, and an elastic metal piece 603 is provided on an inner wall of the fitting groove 10; the metal spring 603 is electrically connected to the connection line 503. Under the action of the metal elastic sheet 603, when the overhanging pin 301 of the power device 30 extends into the matching groove, the connecting hole (originally used for wiring) on the overhanging pin 301 can be clamped on the metal elastic sheet 603; the connecting member 60 itself can be slidably fitted in the electrical connection slot 501 based on the slider 601, and the connecting member 60 can be appropriately slidably moved to fit the protruding pins 301 with different heights under the limit of the electrical connection opening 502.

In summary, the embodiment of the invention provides a bracket and a power module, wherein the bracket can be well adapted to various power devices with different thicknesses through a runner plate structure with adjustable space, so that the adaptation range of the power devices is improved; aiming at the runner plate structure with the adjustable space, the structure of the runner pipe and the related structure is correspondingly improved, so that the whole support can be cooled based on cooling liquid, and the heat dissipation performance of the support is improved; the arrangement of the electric connecting column and the related structure is beneficial to the connection of the overhanging pins of the power device, and the assembly efficiency of the power module is accelerated.

The above detailed description is provided for a bracket and a power module according to the embodiments of the present invention, and the principle and the embodiments of the present invention are explained by applying specific examples, and the above description of the embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.