Safety type double-sided PCB (printed circuit board)

Abstract

The utility model discloses a safe double-sided PCB circuit board, and specifically relates to the technical field of PCBs. The safe double-sided PCB comprises a heat-conducting plate layer, the heat-conducting plate layer is made of copper or other high-heat-conductivity materials, base layers are fixed to the two sides of the heat-conducting plate layer, copper foil layers are fixed to the sides, away from each other, of the two base layers, and solder mask layers cover the sides, away from each other, of the two copper foil layers. Electrical components are located on the solder mask layer, the base layer is made of glass fiber reinforced epoxy resin and has excellent insulation performance and mechanical strength, a circuit is etched on the copper foil layer, wires and connection points in the circuit can be formed, and electrical connection between electronic components is achieved. The safety type double-sided PCB provided by the utility model can prevent heat from being excessively concentrated in a local area, thereby reducing the probability that electrical elements are damaged due to high temperature, and enabling the use of the PCB to be safer.

Description

Technical Field

[0001] This utility model relates to the field of PCB technology, and in particular to a safety double-sided PCB circuit board. Background Technology

[0002] A PCB (Printed Circuit Board) is an important electronic component, serving as the support for electronic devices and the carrier for their electrical connections. PCBs come in single-sided, double-sided, and multi-layer types.

[0003] Double-sided PCBs have electrical components mounted on both sides of the board, resulting in a large number of components. With more components, the heat generated during operation also increases. To prevent these components from overheating, air cooling or water cooling technologies are typically used. However, the heat generated by these components is not only directly radiated into the air, but some is also absorbed by the PCB board, leading to a higher overall PCB temperature. This high temperature hinders heat dissipation for the electrical components, especially on the side of the board where the components are close together, where heat tends to accumulate, jeopardizing the safe operation of the components.

[0004] Therefore, it is necessary to provide a safe double-sided PCB circuit board to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a safe double-sided PCB circuit board that can avoid excessive heat concentration in local areas, thereby reducing the probability of electrical components being damaged by high temperature and making the use of PCB board safer.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A safety-grade 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, which has excellent insulation properties and mechanical strength. Circuits are etched on the copper foil layers to form wires and connection points in the circuit, realizing electrical connections between electronic components. The solder resist layers... Its main function is to prevent solder paste from adhering to areas where soldering is not required, thus preventing short circuits and other defects during the soldering process. It also protects the copper foil circuit from external environmental corrosion. Multiple heat-conducting pillars are fixed on both sides of the heat-conducting plate layer. The heat-conducting pillars are made of copper or other high thermal conductivity materials. The heat-conducting pillars penetrate the base layer, copper foil layer, and solder mask layer. The end of the heat-conducting pillar away from the heat-conducting plate layer is flush with the solder mask layer. The distribution of the heat-conducting pillars should not affect the circuit layout or the setting of electrical components. In other words, the setting of the heat-conducting pillars should not affect the normal use of the PCB.

[0008] Preferably, the copper foil layer has multiple circular holes, the diameter of which is larger than the diameter of the heat-conducting pillar.

[0009] Preferably, the safety-type double-sided PCB circuit board further includes two additional heat dissipation components, which are respectively installed on both sides of the PCB. Each additional heat dissipation component includes a mounting plate, with multiple connecting posts fixed on one side of the mounting plate. The end of each connecting post away from the mounting plate is in contact with a heat-conducting post, and multiple heat dissipation fins are integrally formed on the side of the mounting plate away from the connecting posts.

[0010] Preferably, the mounting plate is further provided with at least one through hole, the position of which can be set according to the specific electrical components on the PCB board.

[0011] Preferably, the mounting plate is fixed to the PCB board formed by the heat-conducting plate layer, the base layer, the copper foil layer and the solder resist layer by screws, and the screws do not affect the conductivity of each part.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) By integrating heat-conducting plate and heat-conducting pillars into the PCB board, the heat generated by electrical components can be effectively conducted away, avoiding excessive heat concentration in local areas, thereby reducing the probability of electrical components being damaged by high temperature and making the use of the PCB board safer.

[0014] (2) Since the heat-conducting pillars do not come into direct contact with the copper foil layer, even if the heat-conducting pillars are made of conductive materials, they will not cause short circuits, thereby improving the electrical safety of the entire PCB board.

[0015] (3) By installing additional heat dissipation components, such as mounting plates with heat dissipation fins, the heat dissipation can be further accelerated, achieving a more efficient cooling effect. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the first embodiment of the safety double-sided PCB circuit board provided by this utility model;

[0017] Figure 2 This is an exploded view of the PCB board;

[0018] Figure 3 This is a schematic diagram of the copper foil layer structure;

[0019] Figure 4 A schematic diagram of the structure of a second embodiment of the safety double-sided PCB circuit board provided by this utility model;

[0020] Figure 5 This is a schematic diagram of the structure with an additional heat dissipation component;

[0021] Figure 6 This is a schematic diagram of the structure with an additional heat dissipation component.

[0022] The corresponding names of the reference numerals in the attached drawings are: 1-heat-conducting plate layer, 2-base layer, 3-copper foil layer, 31-round hole, 4-solder resist layer, 5-heat-conducting pillar, 6-additional heat dissipation component, 61-mounting plate, 62-connecting pillar, 63-heat dissipation fins, 64-through hole, 7-screw. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0024] Example 1

[0025] like Figure 1-3As shown, this utility model provides a safety-type double-sided PCB circuit board, comprising: a heat-conducting plate layer 1, the heat-conducting plate layer 1 being made of copper or other high thermal conductivity materials; base layers 2 fixed on both sides of the heat-conducting plate layer 1; copper foil layers 3 fixed on the sides of the two base layers 2 that are far apart from each other; and solder resist layers 4 covering the sides of the two copper foil layers 3 that are far apart from each other. Electrical components are located on the solder resist layers. The base layers 2 are made of glass fiber reinforced epoxy resin, which has excellent insulation properties and mechanical strength. Circuits are etched on the copper foil layers 3, which can form wires and connection points in the circuit to realize electrical connections between electronic components. The main function of the solder resist layer 4 is to prevent solder paste from adhering to areas where soldering is not required, preventing short circuits and other defects during the soldering process, and also ensuring... To protect the copper foil circuit from external environmental corrosion, multiple heat-conducting pillars 5 are fixed on both sides of the heat-conducting plate layer 1. The heat-conducting pillars 5 are made of copper or other high thermal conductivity materials. The heat-conducting pillars 5 penetrate the base layer 2, copper foil layer 3, and solder mask layer 4. The end of the heat-conducting pillar 5 away from the heat-conducting plate layer 1 is flush with the solder mask layer 4. The position and distribution of the heat-conducting pillars 5 should not affect the circuit layout or the setting of electrical components. That is, the setting of the heat-conducting pillars 5 should not affect the normal use of the PCB. During use, part of the heat generated by the electrical components is transferred to the heat-conducting plate layer 1 and the heat-conducting pillars 5. Under the action of the heat-conducting plate layer 1, the heat is evenly distributed to multiple heat-conducting pillars 5, thereby avoiding heat concentration in a certain local area, reducing the probability of damage to electrical components, and making the PCB safer to use.

[0026] The copper foil layer 3 has multiple circular holes 31 with a diameter larger than that of the heat-conducting pillar 5. This ensures that even if the heat-conducting pillar 5 is made of a conductive material, it will not come into contact with the copper foil layer 3, thus preventing short circuits.

[0027] Example 2

[0028] like Figure 4-6 As shown, the safety-type double-sided PCB circuit board also includes two additional heat dissipation components 6. The two additional heat dissipation components 6 are respectively installed on both sides of the PCB. Each additional heat dissipation component 6 includes 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 contacts the heat-conducting post 5. When the two are in contact, the heat-conducting post 5 will transfer the heat on it to the mounting plate 61 through the connecting post 62, thus achieving the effect of heat transfer. A plurality of heat dissipation fins 63 are integrally formed on the side of the mounting plate 61 away from the connecting post 62. The setting of the heat dissipation fins 63 accelerates the dissipation of heat on the mounting plate 61, thereby ultimately achieving the cooling of the PCB board. Compared with natural cooling, this cooling is faster. The mounting plate 61, connecting post 62 and heat dissipation fins 63 are all made of high thermal conductivity materials, such as copper plates.

[0029] The mounting plate 61 also has at least one through hole 64. The position of the through hole 64 can be set according to the specific electrical components on the PCB board. For example, if a certain position is where a chip is installed, and the chip has high heat dissipation requirements, a fan is needed for heat dissipation. The position of the through hole 64 needs to facilitate the installation of the fan, so that the fan can be installed on the chip. 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 mask layer 4 by screws 7, and the screws 7 do not affect the conductivity of each part.

Claims

1. A safety type double-sided PCB wiring board, characterized by, Include: The both sides of the heat conduction plate layer (1) are fixed with base layer (2), the both sides of two base layer (2) are fixed with copper foil layer (3) away from each other, the both sides of two copper foil layer (3) are covered with solder mask layer (4) away from each other, the both sides of the heat conduction plate layer (1) are fixed with multiple heat conduction column (5), the heat conduction column (5) penetrates the base layer (2), copper foil layer (3) and solder mask layer (4), and the end away from the heat conduction plate layer (1) is flush with the solder mask layer (4).

2. The safety type double-sided PCB circuit board according to claim 1, wherein, The material of the heat conduction plate layer (1) and the heat conduction column (5) is high heat conduction material.

3. The safety double-sided PCB circuit board according to claim 1, wherein, The material of the heat conduction plate layer (1) and the heat conduction column (5) can be metal copper.

4. The safety double-sided PCB circuit board according to claim 1, wherein, Multiple round holes (31) are formed in the copper foil layer (3), and the diameter of the round hole (31) is greater than the diameter of the heat conduction column (5).

5. The safety double-sided PCB circuit board according to claim 1, wherein, The safe double-sided PCB circuit board further comprises two additional heat dissipation components (6), two additional heat dissipation components (6) are respectively installed on the two sides of the PCB, the additional heat dissipation component (6) comprises a mounting plate (61), one side of the mounting plate (61) is fixed with multiple connecting columns (62), one end of the connecting column (62) away from the mounting plate (61) is in contact with the heat conduction column (5), and multiple heat dissipation fins (63) are integrally formed on the side of the mounting plate (61) away from the connecting column (62).

6. The safety double-sided PCB circuit board according to claim 5, wherein, At least one through hole (64) is further formed in the mounting plate (61).

7. The safety double-sided PCB circuit board according to claim 5, wherein, The mounting plate (61) is fixed with the PCB formed by the heat conduction plate layer (1), the base layer (2), the copper foil layer (3) and the solder mask layer (4) through screws (7).

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