CN211378638U

CN211378638U - Rapid heat dissipation structure of power module

Info

Publication number: CN211378638U
Application number: CN202020273437.3U
Authority: CN
Inventors: 王会立
Original assignee: Beijing Mingdianlong Technology Co ltd
Current assignee: Beijing Mingdianlong Technology Co ltd
Priority date: 2020-03-07
Filing date: 2020-03-07
Publication date: 2020-08-28
Anticipated expiration: 2030-03-07

Abstract

The utility model relates to a power module's quick heat radiation structure belongs to power module's technical field for solve the current power and keep away from the lower problem of partial circuit board and the component radiating efficiency of casing, it includes circuit board, casing and sets up the heat radiation structure on the casing, heat radiation structure include a plurality of set up in the heat conduction hose that all communicates atmospheric environment is cut to the equal fixed connection casing in casing, both ends. The heat conduction hose is located the casing, the partial circuit board and the component of butt principle casing, thereby the heat that makes the partial circuit board and the component of keeping away from the casing can direct conduction to the heat conduction hose, heat conduction hose intercommunication atmospheric environment, the heat in the heat conduction hose can be taken away to the air of flow, thereby the heat that makes the partial circuit board and the component of keeping away from the casing can be through the heat conduction hose directness, the efficient gives off, the radiating efficiency of the partial circuit board and the component of keeping away from the casing has been improved.

Description

Rapid heat dissipation structure of power module

Technical Field

The utility model belongs to the technical field of power module's technique and specifically relates to a power module's quick heat radiation structure is related to.

Background

The power module is an integrated voltage conversion circuit that conventionally functions to convert mains electricity into a voltage suitable for use by the consumer. In the process of voltage conversion of the power module, more heat can be released, and if the generated heat cannot be dissipated in time, the power module can be damaged by heating, so that the quality of the heat dissipation effect is always an important standard for measuring the quality of the power module.

The existing power module generally comprises a circuit board and a shell wrapping the circuit board, wherein elements required for power conversion are arranged on the circuit board, and in the working process of the power module, heat dissipated by the circuit board and the elements on the circuit board is conducted to the shell and dissipated to the outside through the shell, so that the heat dissipation of the power module is completed.

The surface of circuit board can be because of various components volume difference, the height difference of outstanding circuit board surface leads to the circuit board surface that is covered with the component to be the irregular shape of fluctuation, but in order to make things convenient for placing and removing of power module, power module's shell shape is regular generally, this just leads to only partial circuit board and component can directly butt the casing and dispel the heat through the casing, and partial circuit board and the component that do not butt the casing can't directly dispel the heat through the casing, and the radiating effect is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power module's quick heat radiation structure, this power structure keeps away from casing part's circuit board and component radiating effect is better to prior art exists not enough.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a power module's quick heat radiation structure, the power includes circuit board and casing, be provided with the radiating heat radiation structure of being convenient for on the casing, heat radiation structure include a plurality of set up in the equal fixed connection in casing, both ends the casing just all communicates atmospheric environment's heat conduction hose.

By adopting the technical scheme, when the shell and the circuit board of the power supply are installed, the heat-conducting hose is abutted to the part of the circuit board and/or the element far away from the shell, when the power supply module is used, the heat emitted by the part of the circuit board and/or the element far away from the shell can be directly conducted to the heat-conducting hose and directly emitted to the atmospheric environment through the heat-conducting hose, so that the heat-radiating effect of the circuit board and/or the element far away from the shell is better; the two ends of the heat-conducting hose are communicated with the atmospheric environment, and the air flow in the atmospheric environment can directly flow through the heat-conducting hose to take away the heat of the heat-conducting hose, so that the heat dissipation efficiency is further improved; the heat in the gas with the increased temperature due to the absorption of the heat emitted by the circuit board and the element in the shell can also be directly emitted to the atmospheric environment through the heat conducting hose, so that the heat radiation efficiency of the power supply is further improved.

Further, the heat conducting hose is a copper hose.

Through adopting above-mentioned technical scheme, the copper hose is wear-resisting corrosion-resistant, and heat conduction efficiency is higher, and the cost is lower.

Further, the heat conducting hose comprises a plurality of sections which are detachably connected.

Through adopting above-mentioned technical scheme, power module's casing is generally including dismantling a plurality of parts of connection, and the both ends of a heat conduction hose probably are connected on two parts that the connection can be dismantled to the casing, and the connection can be dismantled to heat conduction hose itself, has made things convenient for the casing to dismantle the separation of coupling part.

Further, the heat conduction hoses are communicated and connected with each other.

Through adopting above-mentioned technical scheme, the intercommunication is connected between the heat conduction hose, and under the circumstances that the space in the casing allows, form the network of multi-end intercommunication atmospheric environment in the casing, further improved the circulation efficiency of air in the heat conduction hose to further improve the radiating efficiency.

Furthermore, a connecting port is arranged on the shell, the end part of the heat-conducting hose is detachably connected with the connecting port, and the connecting port is matched with a sealing cover for sealing the connecting port.

By adopting the technical scheme, whether the heat conduction hose is arranged or not and the arrangement position on the shell are more flexible, and when the heat conduction hose is not arranged, the connecting port can be sealed by the sealing cover, so that the shell can protect the circuit board in a sealed manner.

Furthermore, a transformation element for voltage transformation is arranged on the circuit board, and the transformation element is fixedly connected with the shell through a heat conduction column.

Through adopting above-mentioned technical scheme, the transform component that carries out the voltage transformation generally is the coil, and the heat that this coil produced is more, so through the fixed transform original paper of heat conduction post, because the heat conduction post is thicker, direct fixed connection casing heat conduction efficiency is higher, and in addition, the heat conduction post is better to transform component's fixed effect, makes the fixed more stable of circuit board in the casing.

Further, the power supply structure further comprises heat-conducting silicone grease, and the heat-conducting silicone grease is used for connecting the circuit board and/or the shell and/or the heat-conducting hose.

Through adopting above-mentioned technical scheme, the heat conduction effect of heat conduction silicone grease is better, can improve the heat conduction efficiency between circuit board, and/or casing, and/or the heat conduction hose to further improve the radiating efficiency of this power structure.

Further, the surface of the heat conduction hose is provided with a heat conduction insulating layer.

Through adopting above-mentioned technical scheme, because the heat conduction hose makes the component that shuttles back and forth in the casing, between the circuit board, also can direct contact circuit board, set up heat conduction insulating layer on the heat conduction hose, can avoid the electric current to pass through heat conduction hose conduction to casing when the circuit board electric leakage, reduce and cause dangerous possibility.

To sum up, the utility model discloses a following at least one useful technological effect:

1. by arranging the heat conduction hose which is communicated with the atmosphere and abuts against the part of the circuit board far away from the shell, the part of the circuit board far away from the shell can be directly radiated to the atmosphere through the heat conduction hose, so that the radiating efficiency of the part of the circuit board far away from the shell of the power supply is improved;

2. the heat conducting hose is arranged into a plurality of sections which are detachably connected, so that the shell is convenient to disassemble and assemble in the process of disassembling and assembling the power supply;

3. the heat conduction hose and the shell are detachably connected, and after the heat conduction hose is detached, a connecting port on the shell can be sealed through the sealing cover, so that the heat conduction hose is flexibly arranged, and meanwhile, the shell can maintain the closed protection of the circuit board.

Drawings

Fig. 1 is a schematic diagram of an explosive structure according to an embodiment of the present invention.

In the figure, 11, the housing main body; 12. a cover body; 13. a connecting port; 14. a connecting pipe; 15. a closure cap; 2. a circuit board; 21. a voltage conversion element; 22. a heat-conducting column; 3. a heat conducting hose; 31. a hose section; 311. a connecting nut; 41. a connecting section; 42. a cross joint.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a power module's quick heat radiation structure, including circuit board 2 and casing, be provided with various components that are used for the voltage transformation on the circuit board 2, in this embodiment, circuit board 2 is provided with two, two circuit board 2 all set up to the unanimous rectangle of shape, connecting rod fixed connection is passed through to four angles of two circuit board 2, the whole cuboid that shows two circuit board 2 of parcel of casing, the casing closes the open lid 12 in cuboid main part top including can dismantling the open cuboid shell main part in top of connection 11 and lid, the circuit board 2 that is located the lower floor is fixed to be set up in shell main part 11 bottom, the casing generally sets up to the better material of heat conduction effect like copper, aluminium. During use of the power supply, heat dissipated by the circuit board 2 and the components is dissipated along the housing to the atmosphere.

Still be provided with the radiating structure who is convenient for heat dissipation on the casing, radiating structure includes a plurality of heat conduction hoses 3. In the present embodiment, the heat conductive hose 3 includes a cross hose and an arc hose. Wherein, the cross hose sets up in the high mid portion of shell main part 11 for improve the radiating efficiency that casing part was kept away from to lower floor's circuit board 2, the arc hose sets up in lid 12 for improve the radiating efficiency of upper circuit board 2.

The cross hose comprises four sections of hose joints 31 and a cross joint 42, a connecting port 13 is arranged at the middle part of four side surfaces of the shell main body 11, and the connecting port 13 extends inwards of the shell along the side surface perpendicular to the connecting port 13 to form a connecting pipe 14 with an external thread. The end cover of hose coupling 31 is equipped with coupling nut 311, and coupling nut 311 screw-thread fit is connected to connecting pipe 14, makes four hose couplings 31 all have one end and can communicate four connectors 13 on four sides of connecting shell main part 11. The cross joint 42 is a cross-shaped pipe, the four ends of the cross joint 42 are provided with external threads, the external threads at the ends of the cross joint 42 are also in threaded fit with the connecting nuts 311 at the ends of the hose sections 31, namely, the other ends of the four hose sections 31 can be communicated with the four ends of the cross joint 42.

Four ends intercommunication atmospheric environment cross pipeline are formed to the cross hose, and the cross hose passes through between two-layer circuit board 2, the heat that does not distribute near the mid portion of casing between two-layer circuit board 2 can directly give off to atmospheric environment through the cross hose, and the air can normally circulate through the cross hose, the thermal efficiency is taken away in the improvement, thereby the radiating efficiency of casing mid portion's circuit board 2 has been improved, when setting up the cross hose, generally with the easy part that generates heat of cross hose and circuit board 2 and the component butt that easily generates heat, in order to further improve the radiating effect.

The arc hose is arranged on the cover body 12, and comprises two hose sections 31 and a connecting section 41, and similarly, the cover body 12 is also provided with two connectors 13 and a connecting pipe 14 structure, the two connecting pipes 14 are respectively communicated and connected with one end of the two hose sections 31 of the arc hose, the connecting section 41 is a straight pipe with external threads at both ends, the remaining end parts of the two hose sections 31 of the arc hose are respectively communicated and connected with both ends of the connecting section 41, the communicating mode is also the connecting nut 311, and the mode that the pipeline is connected through the connecting nut 311 at the end part is a conventional technical means of the technicians in the field, and is not further described here.

The arc hose forms the pipeline of both ends intercommunication atmospheric environment, and the arc hose passes through upper circuit board 2's mid portion, the heat of 2 mid portions of upper circuit board can directly give off to atmospheric environment through the arc hose, and the air can normally circulate through the arc hose, the thermal efficiency is taken away in the improvement, thereby the radiating efficiency of 2 mid portions of upper circuit board's circuit board 2 has been improved, equally, when setting up the arc hose, generally with the easy component butt that generates heat of the easy part that generates heat on arc hose and the upper circuit board 2, in order to further improve the radiating effect.

It can be understood that the arc-shaped hose and the cross-shaped hose are only two expression forms of the heat conducting hose 3, and are not limited to the fixed structure of the heat conducting hose 3, the heat conducting hose 3 can be set to be any shape structure according to the structures of the circuit board 2 and the elements in the shell, the connection of the connecting pipe 14 can also be linked to be different shapes through the multi-way joint, and the heat conducting hose 3 can even pass through the circuit board 2 if necessary, as long as the normal functions of the circuit board 2 and the elements are not affected. In addition, the heat conducting hose 3 needs to have a certain insulating property, and a heat conducting insulating layer is arranged outside the heat conducting hose 3.

Further, because the hose section 31 and the housing are detachably connected, whether the heat conducting hose 3 is set up or not is flexible, in order to make the setting position of the heat conducting hose 3 flexible, a plurality of connectors 13 and connecting pipes 14 are generally arranged at different positions of the housing, in order to avoid the connectors 13 and the connecting pipes 14 from influencing the airtight protection effect of the housing on the circuit board 2, the connectors 13 are adapted with a section of open, and the cylindrical closed cover 15 with internal threads is provided, and the closed cover 15 can close the connecting pipes 14, so that the connectors 13 and the connecting pipes 14 without installing the heat conducting hose 3 are prevented from influencing the tightness of the housing.

Preferably, the shell is also internally provided with heat-conducting silicone grease, and in the embodiment, the heat-conducting silicone grease is arranged in a gap between the lower-layer circuit board 2 and the shell, so that the heat conductivity between the lower-layer circuit board 2 and the shell is better, and the heat dissipation efficiency of the lower-layer shell is improved; the heat-conducting silicone grease is arranged between the two layers of circuit boards 2 and is connected with the elements on the lower layer of circuit board 2 at the bottom of the upper layer of circuit board 2, so that a heat-conducting whole is formed between the lower layer of circuit board 2 and the upper layer of circuit board 2, heat is more easily and uniformly distributed to the two circuit boards 2, local heating of the circuit boards 2 is avoided, the heat emitted by the two circuit boards 2 can be uniformly emitted through the whole shell, the heat-radiating pressure of the local shell is reduced, and the heat-radiating effect is improved; the heat conduction silicone grease is arranged between part of the heat conduction hose 3 and the circuit board 2 and the element, the position of the heat conduction hose 3 can be limited, the heat conduction efficiency of the circuit board 2 and the element and the heat conduction hose 3 can also be improved, heat dissipated by the circuit board 2 and the element is dissipated by the heat conduction hose 3 more easily, and the heat dissipation efficiency is further improved.

In this embodiment, be provided with voltage conversion component 21 on lower floor's circuit board 2 and be the miniature transformer, the coil of miniature transformer is the cylinder tube-shape, be fixed in on lower floor's circuit board 2, the fixed heat conduction post 22 that is provided with a copper on the casing, outside heat conduction post 22 was located to voltage conversion component 21's coil cover, heat conduction post 22 and casing bottom butt, heat conduction post 22 is fixed in on lower floor's circuit board 2 through the door type frame, the heat that voltage conversion component 21 gived off can directly conduct to heat conduction post 22, then conduct to the casing through heat conduction post 22 and give off, thereby further improved voltage conversion component 21's radiating efficiency.

The implementation principle of the embodiment is as follows: in a normal state, the connecting port 13 and the connecting pipe 14 on the shell are both sealed by the sealing cover 15, when the heat-conducting hose 3 is required to be arranged, a plurality of hose sections 31 are connected into a required shape according to the structure of the circuit board 2 and the element and the heat dissipation requirement, the heat-conducting hose 3 is bonded and fixed on the circuit board 2 or the element through the heat-conducting silicone grease to realize the fixation of the heat-conducting hose 3, and the heat-conducting silicone grease is also arranged between the circuit boards 2 and between the shell and the circuit board 2.

The heat conduction hose 3 communicated with the atmospheric environment is adopted, so that part of the circuit board 2 and the element far away from the shell can be directly radiated through the heat conduction hose 3, and the air flow in the heat conduction hose 3 improves the efficiency of taking away the heat of the heat conduction hose 3, so that the radiation efficiency of the part of the circuit board 2 and the element far away from the shell is improved; the heat-conducting hose 3 comprises a plurality of sections of hose sections 31 which are detachably connected, and the heat-conducting hose 3 is detachably connected with the shell, so that the heat-conducting hose 3 is more flexible in arrangement and arrangement shape; the arrangement of the heat-conducting short columns improves the heat dissipation efficiency of the voltage conversion element 21 with more heat dissipation; the arrangement of the heat-conducting silicone grease reduces the possibility of over serious local heating in the power supply.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a power module's quick heat radiation structure, characterized by, the power includes circuit board (2) and casing, be provided with the radiating heat radiation structure of being convenient for on the casing, heat radiation structure include a plurality of set up in the equal fixed connection in casing, both ends the casing just all communicates atmospheric environment's heat conduction hose (3).

2. The rapid heat dissipation structure of a power module as claimed in claim 1, wherein the heat conductive hose (3) is a copper hose.

3. The rapid heat dissipation structure of a power module as claimed in claim 1, wherein the heat conductive hose (3) comprises a plurality of sections detachably connected.

4. The rapid heat dissipation structure of a power module as claimed in claim 1, wherein the heat conducting hoses (3) are connected in communication.

5. The rapid heat dissipation structure of a power module as claimed in claim 1, wherein a connection port (13) is provided on the housing, an end of the heat conductive hose (3) is detachably connected to the connection port (13), and the connection port (13) is adapted with a sealing cover (15) for sealing the connection port (13).

6. The fast heat dissipation structure of a power module as claimed in claim 1, wherein a transformer element for voltage transformation is disposed on the circuit board (2), and the transformer element is fixedly connected to the housing through a heat-conducting pillar (22).

7. The fast heat dissipation structure of a power module according to claim 1, wherein the power structure further comprises a heat conductive silicone grease for connecting the circuit board (2), and/or the housing, and/or the heat conductive hose (3).

8. The rapid heat dissipation structure of a power module as claimed in claim 1, wherein the surface of the heat conducting hose (3) is provided with a heat conducting insulation layer.