CN224068855U

CN224068855U - A type of secure double-sided PCB circuit board

Info

Publication number: CN224068855U
Application number: CN202520422016.5U
Authority: CN
Inventors: 孟文明; 夏俊
Original assignee: KUNSHAN HUACHEN ELECTRONICS CO Ltd
Current assignee: KUNSHAN HUACHEN ELECTRONICS CO Ltd
Priority date: 2025-03-11
Filing date: 2025-03-11
Publication date: 2026-03-31
Anticipated expiration: 2035-03-11

Abstract

This utility model discloses a safe double-sided PCB circuit board, specifically relating to the field of PCB technology. The safe double-sided PCB circuit board includes: a heat-conducting plate layer made of copper or other high thermal conductivity material; base layers fixed on both sides of the heat-conducting plate layer; copper foil layers fixed on the sides of the two base layers that are far apart from each other; and solder resist layers covering the sides of the two copper foil layers that are far apart from each other. Electrical components are located on the solder resist layers. The base layer is made of glass fiber reinforced epoxy resin, possessing excellent insulation properties and mechanical strength. Circuits are etched on the copper foil layers, forming wires and connection points in the circuit, enabling electrical connections between electronic components. The safe double-sided PCB circuit board provided by this utility model can avoid excessive heat concentration in localized areas, thereby reducing the probability of electrical components being damaged due to high temperatures, making the use of the PCB board safer.

Description

Safe double-sided PCB circuit board

Technical Field

The utility model relates to the technical field of PCBs, in particular to a safe double-sided PCB circuit board.

Background

PCB (Printed Circuit Board) is a printed circuit board, which is an important electronic component, is also a support body of an electronic component, and is also a carrier for electrical connection of the electronic component. The PCB board has single panel, double panel and multiply wood.

The electric elements are arranged on two sides of the PCB double-sided board, so that the number of the electric elements on the board is large, when the number of the electric elements is large, the heat generated by the electric elements is increased during working, in order to avoid high temperature of the electric elements, the electric elements are usually cooled by air cooling or water cooling and other technologies, however, the heat generated by the electric elements is not only directly radiated into the air, but also partially absorbed by the PCB, the whole PCB is high in temperature, the heat dissipation of the electric elements is also not facilitated due to high temperature of the board, and especially the heat is accumulated on one side of the board, which is close to the electric elements, so that the safe use of the electric elements is not facilitated.

Therefore, it is necessary to provide a safe double-sided PCB circuit board to solve the above technical problems.

Disclosure of utility model

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the safe double-sided PCB circuit board which can avoid excessive concentration of heat in a local area, thereby reducing the probability of damage of electrical elements due to high temperature and ensuring safer use of the PCB.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The safe double-sided PCB circuit board comprises a heat conducting board layer, wherein the heat conducting board layer is made of copper or other high heat conducting materials, base layers are fixed on two sides of the heat conducting board layer, copper foil layers are fixed on two sides of the base layers, which are far away from each other, a solder mask layer is covered on two sides of the copper foil layers, an electric element is located on the solder mask layer, the base layers are made of glass fiber reinforced epoxy resin, the safe double-sided PCB circuit board comprises excellent insulating performance and mechanical strength, a circuit is etched on the copper foil layers, wires and connection points in the circuit can be formed, electric connection between electronic components is achieved, the solder mask layer mainly plays a role in preventing adhesion of solder paste in areas where welding is not needed, preventing bad phenomena such as short circuit and the like from occurring in the welding process, and protecting copper foil circuits from being corroded by external environments.

Preferably, the copper foil layer is provided with a plurality of round holes, and the diameter of each round hole is larger than that of the heat conducting column.

Preferably, the safe double-sided PCB circuit board further comprises two additional heat dissipation components, the two additional heat dissipation components are respectively installed on two sides of the PCB, the additional heat dissipation components comprise a mounting plate, one side of the mounting plate is fixed with a plurality of connecting columns, one end of the connecting columns, far away from the mounting plate, is contacted with the heat conduction column, and one side, far away from the connecting columns, of the mounting plate is integrally formed with a plurality of heat dissipation fins.

Preferably, the mounting plate is further provided with at least one through hole, and the position of the through hole can be set according to specific electrical elements on the PCB.

Preferably, the mounting plate is fixed with the PCB formed by the heat conducting plate layer, the base layer, the copper foil layer and the solder mask layer through screws, and the screws do not influence the electric conduction of all parts.

Compared with the prior art, the utility model has the following beneficial effects:

(1) Through integrated heat conduction sheet layer and heat conduction post in the PCB board, can be effectively go out the heat conduction that the electrical original paper produced, avoid the heat to concentrate excessively in local region to reduce the impaired probability of electrical original paper because of the high temperature, make the use of PCB board safer.

(2) Because the heat conduction column is not in direct contact with the copper foil layer, even if the heat conduction column is made of conductive materials, the occurrence of short circuit phenomenon can not be caused, and therefore the electrical safety of the whole PCB is improved.

(3) Through the installation of additional heat dissipation components, for example, the installation plate with the heat dissipation fins can further accelerate the heat dissipation, and the more efficient cooling effect is realized.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a security double-sided PCB circuit board provided by the present utility model;

FIG. 2 is an exploded view of a PCB board;

FIG. 3 is a schematic view of the structure of a copper foil layer;

Fig. 4 is a schematic structural diagram of a second embodiment of a secure double-sided PCB circuit board provided by the present utility model;

FIG. 5 is a schematic diagram of an additional heat dissipating assembly;

fig. 6 is a schematic structural diagram of an additional heat dissipating assembly.

The heat-conducting plate comprises a 1-heat-conducting plate layer, a 2-base layer, a 3-copper foil layer, 31-round holes, a 4-solder mask layer, 5-heat-conducting columns, 6-additional heat-radiating components, 61-mounting plates, 62-connecting columns, 63-heat-radiating fins, 64-through holes and 7-screws.

Detailed Description

The utility model will be further illustrated by the following description and examples, which include but are not limited to the following examples.

Example 1

As shown in fig. 1-3, the security double-sided PCB circuit board provided by the present utility model includes: the heat conducting plate layer 1 is made of copper or other high heat conducting materials, the two sides of the heat conducting plate layer 1 are respectively fixed with a base layer 2, two sides of the base layers 2, which are far away from each other, are respectively fixed with a copper foil layer 3, two sides of the copper foil layers 3, which are far away from each other, are respectively covered with a solder mask layer 4, an electric element is positioned on the solder mask layer, the base layers 2 are made of glass fiber reinforced epoxy resin, the heat conducting plate has excellent insulating property and mechanical strength, a circuit is etched on the copper foil layers 3, wires and connection points in the circuit can be formed, the electric connection between electronic components is realized, the solder mask layers 4 mainly serve to prevent the adhesion of solder paste in the area which does not need to be welded, prevent bad phenomena such as short circuit and the like in the welding process, and simultaneously can also protect copper foil circuits from being corroded by external environments, a plurality of heat conducting columns 5 are fixed on both sides of the heat conducting plate layer 1, the heat conducting columns 5 are made of copper or other high heat conducting materials, the heat conducting columns 5 penetrate through the base layer 2, the copper foil layer 3 and the solder mask layer 4, one end of the heat conducting columns 5, which is far away from the heat conducting plate layer 1, is flush with the solder mask layer 4, the position distribution of the heat conducting columns 5 does not influence the arrangement of circuits and the arrangement of electric elements, that is, the arrangement of the heat conducting columns 5 should not affect the normal use of the PCB, and when in use, a part of heat generated by the electrical element is transferred to the heat conducting plate layer 1 and the heat conducting columns 5, and under the action of the heat conducting plate layer 1, the heat is uniformly dispersed to the plurality of heat conducting columns 5, so that the heat is prevented from being concentrated in a certain local area, the damage probability of the electrical element is reduced, and the PCB is used more safely.

The copper foil layer 3 is provided with a plurality of round holes 31, and the diameter of each round hole 31 is larger than that of each heat conducting column 5, so that the heat conducting columns 5 are made of conductive materials and cannot be in contact with the copper foil layer 3, and short circuit is avoided.

Example 2

As shown in fig. 4-6, the safe double-sided PCB circuit board further includes two additional heat dissipation components 6, two the additional heat dissipation components 6 are respectively installed on two sides of the PCB, the additional heat dissipation components 6 include a mounting plate 61, one side of the mounting plate 61 is fixed with a plurality of connection columns 62, one end of the connection columns 62 away from the mounting plate 61 contacts with the heat conduction columns 5, after the connection columns contact with each other, the heat conduction columns 5 can transfer the heat on the connection columns to the mounting plate 61 through the connection columns 62, so as to realize the effect of heat transfer, one side of the mounting plate 61 away from the connection columns 62 is integrally formed with a plurality of heat dissipation fins 63, and the heat dissipation on the mounting plate 61 is quickened, so that the cooling of the PCB board is finally realized.

The mounting board 61 is further provided with at least one through hole 64, the position of the through hole 64 can be set according to specific electrical components on the PCB, for example, a certain position is a position for mounting a chip, the chip has higher heat dissipation requirement, the fan is required to be utilized for heat dissipation, and the position provided with the through hole 64 is required to be convenient for the installation of the fan, so that the dispersion can be mounted on the chip. The mounting plate 61 is fixed with the PCB formed by the heat conducting plate layer 1, the base layer 2, the copper foil layer 3 and the solder mask layer 4 through the screws 7, and the electric conduction of each part is not affected by the screws 7.

Claims

1. A safety-type double-sided PCB circuit board, characterized in that it comprises:

A heat-conducting plate layer (1) is provided, with base layers (2) fixed on both sides. Copper foil layers (3) are fixed on the side of the two base layers (2) that are far apart from each other. Solder resist layers (4) are covered on the side of the two copper foil layers (3) that are far apart from each other. Multiple heat-conducting pillars (5) are fixed on both sides of the heat-conducting plate layer (1). The heat-conducting pillars (5) penetrate the base layer (2), copper foil layers (3) and solder resist layers (4), and the end of the pillar that is far away from the heat-conducting plate layer (1) is flush with the solder resist layers (4).

2. A safety-type double-sided PCB circuit board according to claim 1, characterized in that the heat-conducting plate layer (1) and the heat-conducting pillar (5) are made of high thermal conductivity material.

3. A safety-type double-sided PCB circuit board according to claim 1, wherein the heat-conducting plate layer (1) and the heat-conducting pillar (5) are made of copper.

4. A safety double-sided PCB circuit board according to claim 1, characterized in that a plurality of circular holes (31) are provided on the copper foil layer (3), and the diameter of the circular holes (31) is larger than the diameter of the heat-conducting pillar (5).

5. A safety double-sided PCB circuit board according to claim 1, characterized in that the safety double-sided PCB circuit board further includes two additional heat dissipation components (6), the two additional heat dissipation components (6) are respectively installed on both sides of the PCB, the additional heat dissipation components (6) include a mounting plate (61), a plurality of connecting posts (62) are fixed on one side of the mounting plate (61), the end of the connecting post (62) away from the mounting plate (61) is in contact with the heat-conducting post (5), and a plurality of heat dissipation fins (63) are integrally formed on the side of the mounting plate (61) away from the connecting post (62).

6. A safety-type double-sided PCB circuit board according to claim 5, characterized in that at least one through hole (64) is further provided on the mounting plate (61).

7. A safety double-sided PCB circuit board according to claim 5, characterized in that the mounting plate (61) is fixed to the PCB board formed by the heat-conducting plate layer (1), the base layer (2), the copper foil layer (3) and the solder resist layer (4) by screws (7).