An anti-vibration and heat dissipation structure for high-power brick power modules
By setting multiple sets of heat dissipation components and rectangular heat dissipation teeth in the housing of the high-power brick power module, and fixing them with limiting posts, the problems of heat dissipation efficiency and vibration resistance are solved, achieving efficient heat dissipation and miniaturized design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU XIAHANG TECH CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-03
AI Technical Summary
The increased power loss per unit volume of high-power brick power modules leads to heat dissipation problems. Traditional heat dissipation methods are difficult to meet the high-density heat dissipation requirements and are difficult to miniaturize and lighten. At the same time, vibration resistance needs to be guaranteed.
Multiple heat dissipation components are set in the shell of the heat dissipation structure, with air inlets and outlets at both ends. The fan introduces air and removes heat through rectangular heat dissipation teeth. The heat dissipation teeth have an array of fins inside and are fixed by limiting posts to improve heat dissipation efficiency and vibration resistance.
It achieves efficient heat dissipation, reduces the space occupied by the heat dissipation structure, improves the vibration resistance and heat dissipation efficiency of the power module, and is suitable for mobile power vehicles.
Smart Images
Figure CN224460379U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of power supply heat dissipation technology, specifically relating to an anti-vibration heat dissipation structure for high-power brick power supply modules. Background Technology
[0002] While the size of brick-shaped modular power supplies is continuously shrinking, the power loss per unit volume is significantly increasing, making heat dissipation a core challenge restricting their reliability and lifespan. Research shows that for every 10°C increase in the operating temperature of a power module, reliability can decrease by 50%. Therefore, heat dissipation structure design has become a crucial aspect of the development of high-power brick-shaped power modules. Traditional heat dissipation methods, such as natural convection, are insufficient for high-density heat dissipation requirements. Optimized structural design is needed to construct efficient heat conduction paths. Existing heat sink structures are simple and occupy a large space, resulting in a large heat dissipation structure for power modules, making miniaturization and weight reduction difficult. This is especially true for mobile power supply vehicles that need to be towed, necessitating miniaturization and weight reduction of the power module's heat dissipation structure while ensuring the module's vibration resistance. Utility Model Content
[0003] The purpose of this utility model is to provide a vibration-resistant heat dissipation structure for high-power brick power modules. Multiple heat dissipation components are arranged in the housing of the heat dissipation structure. Multiple air inlets and air outlets are arranged at both ends of the heat dissipation components. The fan of the heat dissipation component is located at the air inlet. The fan introduces air into the heat dissipation teeth of the heat dissipation component and carries away the heat. The heat is dissipated from the air outlet. The heat dissipation teeth have a rectangular structure and the internal fins are arranged in an array, which can have a large range of contact with the air without obstructing the airflow.
[0004] This utility model is achieved through the following technical solution:
[0005] An anti-vibration and heat dissipation structure for a high-power brick power module includes a housing and at least one set of heat dissipation components. The heat dissipation components are installed in the housing, and air inlets and air outlets are respectively provided at both ends of the heat dissipation components on the housing. There are two power modules spaced apart on the side of the heat dissipation components. The power modules are fitted to the heat dissipation components. A first PCB board is provided on the outside of the power modules, and the first PCB board connects the two power modules.
[0006] Preferably, the heat dissipation component includes heat dissipation fins and a fan. The fan is disposed inside the housing and located at the air inlet. One end of the heat dissipation fins is spaced apart from the fan, and the other end is disposed near the air outlet. The two power modules are disposed on the same side of the heat dissipation fins.
[0007] Preferably, the heat dissipation tooth is a rectangular cylindrical structure with open ends. Multiple fins are spaced apart on the four walls inside the heat dissipation tooth. The two fins in the middle of each side wall are the tallest, and the remaining fins extend from the two middle fins to the sides and gradually decrease in height. The fins on the left and right sides of the two middle fins are symmetrically arranged. On the two opposite side walls, the two middle fins are spaced apart.
[0008] Preferably, the bottom of the heat dissipation denticle abuts against the bottom of the housing, and the top of the heat dissipation denticle is spaced apart from the top of the housing.
[0009] Preferably, the top of the heat dissipation tooth is provided with a plurality of first limiting posts, the center of the first limiting post is provided with a thread, the top of the first limiting post abuts against the inner side of the top of the housing, and the housing is connected to the first limiting post by screws.
[0010] Preferably, a MOSFET is provided on one side of the power module, the MOSFET is spaced apart from the power module, the MOSFET is attached to the heat dissipation teeth, and a surge suppression plate is provided on the MOSFET.
[0011] Preferably, a second PCB board is provided on the side of the heat dissipation component, a plurality of capacitors are provided on the second PCB board, a second limiting post is provided between the second PCB board and the bottom of the housing, and the second PCB board and the bottom of the housing are connected by screws.
[0012] Preferably, the housing is provided with three sets of heat dissipation components, wherein the heat dissipation teeth of two sets of heat dissipation components are fitted together.
[0013] Preferably, a set of handles is provided on the side of the housing where the air inlet is located.
[0014] Preferably, multiple plugs are provided on the side of the housing where the air outlet is located.
[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0016] 1) In this utility model, multiple sets of heat dissipation components are provided in the shell of the heat dissipation structure. Multiple air inlets and air outlets are provided at both ends of the heat dissipation components. The fan of the heat dissipation component is located at the air inlet. The fan introduces air into the heat dissipation teeth of the heat dissipation component to remove heat and dissipates heat from the air outlet. The heat dissipation teeth are rectangular structures with internal fins arranged in an array. The fins on each side are spaced apart, which can have a large range of contact with the air without obstructing the airflow, thereby improving the heat dissipation effect. In addition, the heat dissipation teeth distribution structure is reasonable and compact, and the space occupied is small.
[0017] 2) In this utility model, the top of the heat dissipation tooth is spaced apart from the top of the shell, and the two are kept at a fixed distance by the first limiting post, thereby providing a larger heat dissipation space for the heat dissipation tooth to improve the heat dissipation efficiency.
[0018] 3) In this utility model, the heat dissipation teeth are rectangular cylindrical structures with high structural stability. The heat dissipation teeth are fixed in the shell by multiple bolts, which has good vibration resistance. The power module is attached to the heat dissipation teeth by a heat dissipation pad with high thermal conductivity and fixed to the heat dissipation teeth by bolts, thereby improving the vibration resistance of the power module. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the heat dissipation structure housing in this utility model.
[0021] Figure 2 This is a front view of the heat dissipation structure housing in this utility model.
[0022] Figure 3 This is a schematic diagram of the back structure of the heat dissipation structure housing in this utility model.
[0023] Figure 4 This is a schematic diagram of the internal structure of the heat dissipation structure housing in this utility model.
[0024] Figure 5 This is a schematic diagram of the heat dissipation teeth in this utility model.
[0025] Wherein: 1-shell, 11-air inlet, 12-air outlet, 13-handle, 14-plug, 2-fan, 3-heat dissipation fins, 31-fins, 32-first limiting post, 4-power module, 41-first PCB board, 5-second PCB board, 51-second limiting post, 6-capacitor. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0027] Example 1:
[0028] An anti-vibration and heat dissipation structure for high-power brick power modules, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the device includes a housing 1 and three sets of heat dissipation components. The heat dissipation components are installed in the housing 1, with two sets of heat dissipation components fitted together. Each heat dissipation component has an air inlet 11 and an air outlet 12 at both ends. Each heat dissipation component has two spaced-apart power modules 4 on its side, fitted together. A first PCB board 41 is located outside each power module 4, connecting the two power modules 4. The heat dissipation components include heat dissipation fins 3 and a fan 2. The heat dissipation fins 3 of the two fitted heat dissipation components are fitted together. The fan 2 is located inside the housing 1 at the air inlet 11. One end of the heat dissipation fin is spaced apart from the fan 2, and the other end is near the air outlet 12. The two power modules 4 are located on the same side of the heat dissipation fins 3. A high thermal conductivity heat dissipation pad is placed between the power modules 4 and the heat dissipation fins 3 to facilitate heat dissipation. Bolts pass through the first PCB board 41 and the power modules 4 and are threadedly connected to the heat dissipation fins 3. There is no direct contact between the power modules 4 and the housing 1, ensuring the vibration resistance of the power modules 4. The heat from the power module 4 is transferred to the heat dissipation fins 3. The fan 2 draws air into the heat dissipation fins 3 and exhausts it from the air outlet 12, thereby carrying away the heat and achieving the purpose of heat dissipation.
[0029] A MOSFET is installed on one side of the power module 4, spaced apart from the power module 4. The MOSFET is also positioned in conjunction with the heat sink 3, and a surge suppression plate is installed on the MOSFET. The heat from the MOSFET is transferred to the heat sink 3. The fan 2 draws air into the heat sink 3 and exhausts it from the air outlet 12, thus carrying away the heat. A second PCB board 5 is installed on the side of the heat dissipation component at the bottom of the housing 1. Multiple capacitors 6 are installed on the second PCB board 5. A second limiting post 51 is installed between the second PCB board 5 and the bottom of the housing 1. The second limiting post 51 is installed on the housing 1 and connected to the second limiting post 51 at the bottom of the housing 1 by screws. The second limiting post 51 keeps the second PCB board 5 and the bottom of the housing 1 spaced apart, ensuring heat dissipation for the second PCB board 5 and the capacitors 6. A set of handles 13 is installed on the side of the housing 1 where the air inlet 11 is located, and multiple plugs 14 are installed on the side of the housing 1 where the air outlet 12 is located. The housing 1 can be inserted into the frame of the mobile power supply vehicle and connected to the battery via wires, or it can be pulled out for maintenance or repair.
[0030] Example 2:
[0031] This embodiment, based on the above embodiment, further defines the heat dissipation teeth 3, such as... Figure 4 and Figure 5As shown, the heat dissipation tooth 3 is a rectangular cylindrical structure with open ends. Multiple fins 31 are spaced apart on the four walls inside the heat dissipation tooth 3. The fins 31 on the four walls inside the heat dissipation tooth 3 have the same structure and are arranged in an array inside the heat dissipation tooth 3. The two fins 31 in the middle of each side wall are the tallest, and the remaining fins 31 extend from the two middle fins 31 to both sides and gradually decrease in height. The fins 31 on the left and right sides of the two middle fins 31 of each side wall are symmetrically arranged. On the two opposite side walls, the two middle fins 31 are spaced apart to form an X-shaped channel in the middle of the heat dissipation tooth 3 to ensure the airflow rate. The bottom of the heat dissipation denticle 3 abuts against the bottom of the housing 1, and the top of the heat dissipation denticle 3 is spaced apart from the top of the housing 1. Multiple first limiting posts 32 are provided on the top of the heat dissipation denticle 3, each with a threaded center. The top of the first limiting post 32 abuts against the inner side of the top of the housing 1. The housing 1 and the first limiting posts 32 are connected by screws. The first limiting posts 32 maintain a fixed distance between the top of the housing 1 and the heat dissipation denticle 3, allowing heat dissipation to occur on the outer surface of the heat dissipation denticle 3. Other parts of this embodiment are the same as those in the above embodiment and will not be repeated here.
[0032] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0033] Furthermore, the use of terms such as "horizontal" or "vertical" in the description of this utility model does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A vibration-resistant heat dissipation structure for high-power brick power module applications, characterized by, The device includes a housing and at least one set of heat dissipation components. The heat dissipation components are installed in the housing. An air inlet and an air outlet are respectively provided at both ends of the heat dissipation components on the housing. There are two spaced power modules on the side of the heat dissipation components. The power modules are attached to the heat dissipation components. A first PCB board is provided on the outside of the power modules, and the first PCB board connects the two power modules.
2. The anti-radiation heat sink structure for high-power brick power module applications according to claim 1, wherein, The heat dissipation component includes heat dissipation fins and a fan. The fan is disposed inside the housing and located at the air inlet. One end of the heat dissipation fins is spaced apart from the fan, and the other end is disposed near the air outlet. The two power modules are disposed on the same side of the heat dissipation fins.
3. The vibration-resistant and heat dissipation structure for the high-power brick power module as described in claim 2, characterized in that, The heat dissipation tooth is a rectangular cylindrical structure with open ends. Multiple fins are spaced apart on the four walls inside the heat dissipation tooth. The two fins in the middle of each side wall are the tallest, and the remaining fins extend from the two middle fins to the sides and gradually decrease in height. The fins on the left and right sides of the two middle fins are symmetrically arranged. On the two opposite side walls, the two middle fins are spaced apart.
4. The anti-radiation heat sink structure for high power brick power module applications of claim 2, wherein, The bottom of the heat dissipation tooth abuts against the bottom of the housing, and the top of the heat dissipation tooth is spaced apart from the top of the housing.
5. The anti-radiation heat sink structure for high power brick power module applications of claim 4, wherein, The top of the heat dissipation fins is provided with a plurality of first limiting posts, the center of the first limiting posts is provided with threads, the top of the first limiting posts abuts against the inner side of the top of the housing, and the housing is connected to the first limiting posts by screws.
6. The anti-radiation heat sink structure for high power brick power module applications of claim 2, wherein, A MOSFET is provided on one side of the power module. The MOSFET is spaced apart from the power module and is fitted with heat dissipation fins. A surge suppression plate is provided on the MOSFET.
7. The anti-radiation heat sink structure for high power brick power module applications of claim 1, wherein, The heat dissipation component has a second PCB board on its side, and multiple capacitors are provided on the second PCB board. A second limiting post is provided between the second PCB board and the bottom of the housing. The second PCB board and the bottom of the housing are connected by screws.
8. The anti-radiation heat sink structure for high power brick power module applications of claim 2, wherein, The housing contains three sets of heat dissipation components, with the heat dissipation teeth of two sets of heat dissipation components being fitted together.
9. The vibration-resistant and heat dissipation structure for the high-power brick power module as described in claim 1, characterized in that, A set of handles is provided on the side of the housing where the air inlet is located.
10. The anti-radiation heat sink structure for high power brick power module applications of claim 1, wherein, Multiple plugs are provided on the side of the housing where the air outlet is located.