CN211702521U

CN211702521U - Optimize radiating built-in controller PCBA of put motor in

Info

Publication number: CN211702521U
Application number: CN202020032643.5U
Authority: CN
Inventors: 熊炜; 田云
Original assignee: Xianle Power Control Technology Shanghai Co ltd
Current assignee: Xianle Power Control Technology Shanghai Co ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-10-16
Anticipated expiration: 2030-01-08

Abstract

The utility model discloses an optimize radiating built-in controller PCBA of in put motor, which comprises a plate material, the panel top is provided with a plurality of pads, be fixed with MOS power paster through the metal tin welding on the pad, the heat conduction hole that has a plurality of even array distribution is bored and carved in the pad bottom, the panel bottom is provided with a plurality of back fin corresponding with the pad, the heat conduction hole runs through panel and fin setting, the inner wall surface covering in heat conduction hole has the conducting strip, panel is multilayer structure, from last first basic unit, first heat-conducting layer, second heat-conducting layer and the second basic unit of down divideing into in proper order, the utility model discloses a reasonable structural design has got rid of the aluminium system radiating block in the traditional handicraft, practices thrift the cost, reduces the processing degree of difficulty, can guarantee sufficient radiating effect simultaneously again.

Description

Optimize radiating built-in controller PCBA of put motor in

Technical Field

The utility model relates to a PCB board processing technology field specifically is an optimize radiating built-in controller PCBA of well motor.

Background

The PCBA board refers to a PCB board with various electronic components welded. The M420 controller type plate of the existing middle motor has higher requirement on heat dissipation due to higher power. When the welding components and parts of present high power need satisfy high-efficient heat dissipation, just need design sufficient heat conduction bleeder vent on the pad of components and parts, increase the air flow, make things convenient for the heat conduction, still need laminate the installation aluminium system radiating block in the position that the another side of panel corresponds high power welding components and parts simultaneously to this reaches the radiating effect. The process is characterized in that heat conduction of high-power components is carried out in a mode of cutting heat conduction holes in a bonding pad, the power components are welded on the corresponding bonding pad through metal tin, the tin is used as a medium to conduct heat to the bonding pad, and then the heat is conducted and dissipated through the heat conduction holes in the bonding pad. However, the board material existing around the bonding pad and the heat conduction hole is mainly FR4 (glass fiber), which does not have good heat dissipation performance, and the real heat dissipation needs to depend on an aluminum heat dissipation block installed in the rear. However, the heat conduction holes have slow heat conduction, and the heat conduction reaches the aluminum radiating block in a limited way, so the process has the advantages of general heat dissipation effect, complex operation flow and need of mounting the aluminum radiating block in a post-mounted manner. To the controller board of putting motor M420 model in, its installation space of itself just has the limitation, and the great radiating block of volume itself needs additionally to occupy the space again, just accomplishes more accurate control with regard to needing, and personnel's installation operating coefficient degree of difficulty and precision also correspondingly promote, and the cost of manufacture of aluminium radiating block is also great. This original process is more traditional, and it is great to consume time, human cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an in put motor built-in control ware PCBA of optimizing heat dissipation to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an optimize radiating built-in controller PCBA of put motor, includes panel, the panel top is provided with a plurality of pads, be fixed with MOS power paster through the metal tin welding on the pad, the heat conduction hole that has a plurality of even array distributions is bored and carved in the pad bottom, the panel bottom is provided with a plurality of back fin corresponding with the pad, the heat conduction hole runs through panel and fin setting, the inner wall surface covering in heat conduction hole has the conducting strip, panel is multilayer structure, down divide into first basic unit, first heat-conducting layer, second heat-conducting layer and second basic unit from last in proper order.

Preferably, the first base layer and the second base layer are glass fiber layers.

Preferably, the first heat conduction layer and the second heat conduction layer are both glass fiber and copper foil composite layers.

Preferably, the coverage area of the copper foil in each of the first heat conduction layer and the second heat conduction layer is larger than 80%.

Preferably, the heat conducting sheet is a copper foil.

Preferably, the radiating fins are large-area radiating copper foil surfaces.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a reasonable structural design has got rid of the aluminium system radiating block among the traditional handicraft, practices thrift the cost, reduces the processing degree of difficulty, can guarantee sufficient radiating effect simultaneously again.

Drawings

FIG. 1 is a schematic structural diagram of a built-in controller PCBA of a centrally-mounted motor with optimized heat dissipation;

FIG. 2 is a schematic structural diagram of a power MOS patch in a heat dissipation-optimized built-in motor controller PCBA;

fig. 3 is a schematic structural diagram of a first heat conduction layer in a PCBA for optimizing heat dissipation of a built-in motor controller;

fig. 4 is a schematic structural diagram of a second heat conduction layer in a PCBA for optimizing heat dissipation of a built-in motor controller;

fig. 5 is a schematic structural diagram of a back heat sink in a PCBA for optimizing heat dissipation of a built-in controller of a mid-motor.

In the figure: the structure comprises a board 1, a bonding pad 2, a MOS power patch 3, a heat conduction hole 4, a heat conduction fin 5, a heat dissipation fin 6, a first base layer 7, a first heat conduction layer 8, a second heat conduction layer 9 and a second base layer 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides an optimize radiating built-in controller PCBA of put motor, includes

panel

1, 1 top of panel is provided with a plurality of pads 2, be fixed with MOS power paster 3 through the metal tin welding on the

pad

2, 2 bottoms of pad are bored and are carved with a plurality of even array distribution's

heat conduction hole

4, 1 bottom of panel is provided with a plurality of back fin 6 corresponding with pad 2, heat conduction hole 4 runs through panel 1 and fin 6 setting, the inner wall surface covering of heat conduction hole 4 has heat conduction piece 5, panel 1 is multilayer structure, from last first basic unit 7, first heat-conducting layer 8, second heat-conducting layer 9 and the second basic unit 10 of down dividing into in proper order.

The first base layer 7 and the second base layer 10 are glass fiber layers.

The first heat conduction layer 8 and the second heat conduction layer 9 are both glass fiber and copper foil composite layers.

The coverage area of the copper foil in the first heat conduction layer 8 and the coverage area of the copper foil in the second heat conduction layer 9 are both larger than 80%.

The heat conducting fin 5 is a copper foil.

The radiating fins 6 are large-area radiating copper foil surfaces.

The utility model discloses a theory of operation: during PCB production, the scheme that an original M420 type board takes FR4 as a main material is improved, and the heat conductivity of the board is enhanced by adding a large-area copper foil surface and increasing the thickness of the copper foil. When two trilaminar panels are made, through the copper foil face of pressfitting certain thickness for two trilaminars all form the aspect that FR4 and large tracts of land copper foil make up, bore the heat conduction hole of carving the same proportion simultaneously on the pad of high power components and parts, the pore wall material is the copper foil, can form the effect of two trilaminars series connection inside heat conduction hole and panel like this. Copper is a material with higher heat conductivity, and is far better than the heat conduction effect of FR 4. When preparation processing high power components and parts back layer, need cover the one deck large tracts of land heat dissipation copper foil face on the heat conduction hole of establishing ties with two three-layer copper foil faces, possess certain thickness to establish ties the heat conduction hole in this heat dissipation region, the area of increase and air contact makes the heat energy of conduction play high-efficient radiating effect on the back layer with air contact. Copper foils are laid on the two layers and the three layers inside the board surface and are in contact with the heat conducting fins in the heat conducting holes, and a certain heat dissipation effect can be achieved. High power components and parts pass through medium metal tin welding on M420 model panel top layer pad, when it dispels the heat in a large number of works, the heat at first conducts to the heat conduction hole of carving on the welding pad, because the copper foil in the heat conduction hole establishes ties the copper foil face of two three-layers, the heat can dispel the part rapidly, and a large amount of concentrated heat can conduct to the back of power components and parts, back fin region promptly, because the back fin exposes outside, can directly give off the heat to the air, thereby need not additionally to install the aluminium radiating block, also can reach better radiating effect, optimize the operation flow when using manpower sparingly, and the cost is saved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an optimize radiating built-in controller PCBA of put motor, includes panel (1), its characterized in that: the utility model discloses a heat-conducting plate, including panel (1), pad (2), metal tin soldering, heat conduction hole (4) that have a plurality of even array distribution are carved with to the drilling of pad (2) bottom, panel (1) bottom is provided with a plurality of back fin (6) corresponding with pad (2), heat conduction hole (4) run through panel (1) and fin (6) setting, the inner wall surface covering of heat conduction hole (4) has conducting strip (5), panel (1) are multilayer structure, from last first basic unit (7), first heat-conducting layer (8), second heat-conducting layer (9) and second basic unit (10) down divide into in proper order.

2. The heat dissipation-optimized central motor built-in controller PCBA according to claim 1, is characterized in that: the first base layer (7) and the second base layer (10) are glass fiber layers.

3. The heat dissipation-optimized central motor built-in controller PCBA according to claim 1, is characterized in that: the first heat conduction layer (8) and the second heat conduction layer (9) are both glass fiber and copper foil composite layers.

4. The heat dissipation-optimized central motor built-in controller PCBA according to claim 3, is characterized in that: the coverage area of the copper foil in the first heat conduction layer (8) and the coverage area of the copper foil in the second heat conduction layer (9) are both larger than 80%.

5. The heat dissipation-optimized central motor built-in controller PCBA according to claim 1, is characterized in that: the heat conducting fins (5) are copper foil sheets.

6. The heat dissipation-optimized central motor built-in controller PCBA according to claim 1, is characterized in that: the radiating fins (6) are large-area radiating copper foil surfaces.