CN209497316U - USB charging power mechanism and USB charging power module - Google Patents

Abstract

The utility model discloses a USB charging power supply mechanism and a USB charging power supply module. The USB charging power supply mechanism includes a PCB component board, a power conversion PCB component board, an output PCB component board, and a rectification control PCB component board. The power conversion PCB component board and the rectification control PCB component board are connected, the power conversion PCB component board and the rectification control PCB component board are respectively connected to the output PCB component board, the input PCB component board, the power conversion PCB The control PCB assembly boards are surrounded in turn to form a square structure. Compared with the prior art, the utility model reduces the volume of the USB charging power supply module, improves the space utilization rate, and improves the compatibility with the current switch and socket installation methods.

Description

USB charging power mechanism and USB charging power module

technical field

The utility model relates to the technical field of low-voltage electrical accessories and chargers, in particular to a USB charging power supply mechanism and a USB charging power supply module.

Background technique

At present, with the popularity of smart terminal equipment, the requirements for chargers are also getting higher and higher. Portable chargers, charging heads, and USB charging power modules installed in switch socket wall boxes can all provide more convenient charging functions. . Among them, installing the USB charging power module in the wall box of a low-voltage switch or socket puts forward very high requirements on the volume of the USB charging power module. Currently, the USB charging power module installed in the wall box on the market is relatively small Large power, low current, and low space utilization make it difficult for the current USB charging power supply to be modularized, and it is difficult to be compatible with the current switch and socket installation methods.

Utility model content

The main purpose of the utility model is to propose a USB charging power supply mechanism and a USB charging power supply module, aiming at reducing the volume of the USB charging power supply module, improving space utilization, and improving compatibility with current switch and socket installation methods.

In order to achieve the above object, the utility model provides a USB charging power supply mechanism, including at least four PCB components, the four PCB components include an input PCB assembly board for installing an AC input circuit, and a primary side circuit for installing a charging power supply. The power conversion PCB component board, the output PCB component board for installing the USB output circuit, and the rectification control PCB component board for installing the secondary side circuit of the charging power supply, wherein the input PCB component board, the power conversion PCB The component board, the output PCB component board, and the rectification control PCB component board are connected in sequence, and the input PCB component board, power conversion PCB component board, output PCB component board, and rectification control PCB component board are surrounded in turn to form a square structure.

Optionally, a first insulating sheet or a first insulating wall is provided between the output PCB assembly board and the power conversion PCB assembly board, so that electrical isolation is formed between the output PCB assembly and the power conversion PCB assembly board, and the A second insulating sheet or a second insulating wall is arranged between the rectification control PCB assembly board and the power conversion PCB assembly board, so as to form insulation between the rectification control PCB assembly and the power conversion PCB assembly board.

Optionally, the first insulating sheet or the first insulating wall, the second insulating sheet or the second insulating wall are Mylar sheets or PVC insulating sheets.

Optionally, the input PCB component board is provided with at least two AC input terminals, a fuse, and a rectifier bridge; the power conversion PCB component board is equipped with an isolation transformer, a mains input filter circuit, a switching power supply A primary side control circuit and a switch circuit; at least one USB terminal and a USB port identification circuit are installed on the output PCB assembly board; a rectification and filtering circuit on the secondary side of the charging power supply is installed on the rectification control PCB assembly board.

Optionally, the power conversion PCB assembly board is connected to the rectification control PCB assembly board through flying leads.

Optionally, there are at least two electrical connection networks between the input PCB assembly board and the power conversion PCB assembly board, and the two electrical connection networks are respectively the high voltage DC positive stage and the negative stage of the AC rectified output; the power conversion There are at least two electrical connection networks between the PCB component board and the rectification control PCB component board, and the two electrical connection networks are respectively the secondary side output terminals of the power isolation transformer on the power conversion PCB component board; the output PCB component board and the There are at least two electrical connection networks between the rectification control PCB component boards, and the two electrical connection networks are respectively the positive and negative stages of the low-voltage direct current output by the charging power supply.

Optionally, the power conversion PCB assembly board and the output PCB assembly board are bridge-connected through a Y capacitor.

Optionally, the input PCB component board is fixedly connected to the power conversion PCB component board and the rectification control PCB component board respectively through solder joints or pins, and the output PCB component board is respectively connected to the power conversion PCB component board, rectification control PCB component board, etc. The control PCB assembly board is fixedly connected by solder joints or pins.

In order to achieve the above object, the present invention also proposes a USB charging power supply module, which includes the above-mentioned USB charging power supply mechanism.

Optionally, the USB charging power supply module further includes a plastic casing, and the USB charging power supply mechanism is installed in the plastic casing.

In the USB charging power supply mechanism and the USB charging power supply module proposed by the embodiment of the utility model, the USB charging power supply mechanism includes an input PCB component board for installing an AC input circuit, a power conversion PCB component board for installing a primary side circuit of the charging power supply, The output PCB component board for installing the USB output circuit, and the rectification control PCB component board for installing the secondary side circuit of the charging power supply, wherein, the input PCB component board is connected with the power conversion PCB component board and the rectification control PCB respectively The component board is connected, and the power conversion PCB component board and the rectification control PCB component board are also respectively connected with the output PCB component board, and the input PCB component board, the power conversion PCB component board, the output PCB component board, and the rectification control PCB component board The boards are surrounded in turn to form a square structure, which solves the problem of the excessive volume of the USB charging power supply mechanism installed in the switch and socket bottom box in the prior art, and the incompatibility with the traditional switch and socket installation method due to the large volume The problem. Through the ingenious combination of multiple PCB components, the mechanism greatly improves the utilization rate of space, can greatly reduce the volume of the USB charging power supply module, makes the structure of multiple PCB component boards stable and reliable, and can effectively complete a complete USB charging power supply at a low cost. function, and form a good electrical isolation of input and output, so that the USB charging power supply module can meet the safety standards of various regions. At the same time, the USB charging power supply module can be matched with different bottom boxes, and is compatible with switches and installation methods currently on the market.

Description of drawings

Fig. 1 is an exploded view of the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 2 is a three-dimensional structural schematic diagram of the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 3 is a three-dimensional structural schematic diagram of another angle of the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 4 is a structural plan view of the input PCB component board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 5 is a side view of the input PCB component board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 6 is a three-dimensional structural schematic diagram of the input PCB component board in the USB charging power supply mechanism of the embodiment of the present invention;

7 is a plan view of the structure of the power conversion PCB assembly board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 8 is another structural plan view of the power conversion PCB assembly board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 9 is a side view of the power conversion PCB assembly board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 10 is a schematic diagram of the three-dimensional structure of the power conversion PCB assembly board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 11 is a structural plan view of the output PCB component board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 12 is a side view of the output PCB assembly board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 13 is a schematic diagram of the three-dimensional structure of the output PCB assembly board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 14 is a structural plan view of the rectification control PCB component board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 15 is a side view of the rectification control PCB assembly board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 16 is a schematic diagram of the three-dimensional structure of the rectification control PCB component board in the USB charging power supply mechanism of the embodiment of the present invention;

Fig. 17 is a schematic diagram of the three-dimensional structure of the USB charging power supply module of the embodiment of the present invention;

Fig. 18 is a schematic diagram of another three-dimensional structure of the USB charging power supply module according to the embodiment of the present invention.

Reference signs:

Input PCB component board 10; AC input terminal 101; fuse 102; rectifier bridge 103; power conversion PCB component board 20; Board 30 ; USB terminal 301 ; USB port identification circuit 302 ; rectification control PCB component board 40 ; secondary side rectification filter circuit 401 ; first insulating sheet 50 ; second insulating sheet 60 .

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present utility model, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the relative positional relationship, movement conditions, etc. between the components shown in the figure below are changed, if the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. Implying their relative importance or implying the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , also not within the scope of protection required by the utility model.

As shown in Figures 1 to 3, the USB charging power supply mechanism proposed by the embodiment of the present invention includes at least four PCB assemblies, and the four PCB assemblies include an input PCB assembly board 10 for installing an AC input circuit, and an input PCB assembly board 10 for installing an AC input circuit. The power conversion PCB assembly board 20 of the primary side circuit of the charging power supply, the output PCB assembly board 30 for installing the USB output circuit, and the rectification control PCB assembly board 40 for installing the secondary side circuit of the charging power supply, wherein the input PCB The component board 10 is respectively connected with the power conversion PCB component board 20 and the rectification control PCB component board 40, and the power conversion PCB component board 20 and the rectification control PCB component board 40 are respectively connected with the output PCB component board 30, so The power conversion PCB assembly board 20 and the rectification control PCB assembly board 40 are connected through flying wires.

The input PCB component board 10 , the power conversion PCB component board 20 , the output PCB component board 30 , and the rectification control PCB component board 40 are surrounded in turn to form a square structure.

Wherein, a first insulating sheet 50 or a first insulating wall is arranged between the output PCB assembly board 30 and the power conversion PCB assembly board 20, and a first insulating sheet 50 or a first insulating wall is arranged between the rectification control PCB assembly board 40 and the power conversion PCB assembly board 20 The second insulating sheet 60 or the second insulating wall.

The first insulating sheet 50 or the first insulating wall can make the output PCB assembly electrically isolated from the power conversion PCB assembly board 20, and the second insulating sheet 60 or the second insulating wall can make the rectification control PCB assembly The board 40 is insulated from the power conversion PCB assembly board 20 . Thus, the USB charging power supply mechanism proposed by the utility model can meet the safety requirements of various national and regional standards, including discharge distance, creepage distance, primary and secondary side withstand voltage, and the like.

During specific implementation, the first insulating sheet 50 or the first insulating wall, the second insulating sheet 60 or the second insulating wall can all use Mylar sheets or PVC insulating sheets.

As shown in Fig. 2 and Fig. 3, in one embodiment, input PCB assembly board 10, power conversion PCB assembly board 20, output PCB assembly board 30, rectification control PCB assembly board 40 four assembly boards and internal insulation sheet are assembled into USB charging power supply module; wherein the input PCB component board 10, the power conversion PCB component board 20, the output PCB component board 30, and the rectification control PCB component board 40 are electrically connected between the four component boards through the solder joints of the adjacent PCB component boards. It is connected with the structure to form a structurally stable cube, and the corresponding insulating sheet is placed between the output PCB assembly board 30 and the power conversion assembly board 20 .

Further, as shown in Figures 4 to 6, in one embodiment, at least two AC input terminals 101 (AC input terminals), a fuse 102, and a rectifier bridge are installed on the input PCB assembly board 10 103 , the input PCB component board 10 is structurally combined with the power conversion PCB component board 20 and the rectification control PCB component board 40 through several pads.

As shown in FIG. 7 to FIG. 10 , in one embodiment, an isolation transformer 201 , a mains input filter circuit 202 , a switching power supply primary side control circuit and a switching circuit 203 are mounted on the power conversion PCB assembly board 20 . The power conversion PCB assembly board 20 is structurally combined with the input PCB assembly board 10 and the output PCB assembly board 30 through several pads.

As shown in FIGS. 11 to 13 , in an embodiment, at least one USB terminal 301 and a USB port identification circuit 302 are installed on the output PCB assembly board 30 . The output PCB component board 30 is structurally combined with the power conversion component board 20 and the rectification control PCB component board 40 through several pads.

As shown in FIGS. 14 to 16 , in an embodiment, the rectification control PCB component board 40 is installed with a rectification and filtering circuit 401 on the secondary side of the charging power supply. The rectification control PCB assembly board 40 is structurally combined with the output PCB assembly board 30 and the input PCB assembly board 10 through several pads.

Furthermore, in one embodiment, there are at least two electrical connection networks between the input PCB assembly board 10 and the power conversion PCB assembly board 20, which are respectively the high-voltage DC positive stage and the negative stage of the AC rectified output; There are at least two electrical connection networks between the power conversion PCB component board 20 and the rectification control PCB component board 40, which are respectively the secondary side output terminals of the power isolation transformer 201 on the power conversion PCB component board 20; the output PCB component board 30 There are at least two electrical connection networks between the rectification control PCB component board 40 , which are respectively the positive and negative stages of the low-voltage direct current output by the charging power supply.

It can be understood that there is no electrical connection network between the power conversion PCB assembly board 20 and the output PCB assembly board 30, and during specific implementation, a Y capacitor can be passed between the power conversion PCB assembly board 20 and the output PCB assembly board 30 join.

Furthermore, as an embodiment, the input PCB assembly board 10 is fixedly connected to the power conversion PCB assembly board 20 and the rectification control PCB assembly board 40 through solder joints or pins, and the output PCB assembly board 30 is respectively It is fixedly connected with the power conversion PCB assembly board 20 and the rectification control PCB assembly board 40 through solder joints or pins.

For example, the input PCB assembly board 10 is electrically and structurally connected with the power conversion PCB assembly board 20 and the rectification control PCB assembly board 40 respectively, and the output PCB assembly board 30 is respectively connected to the The electrical and structural connections are made between the power conversion PCB component board 20 and the rectification control PCB component board 40 through two soldering points.

The utility model USB charging power supply mechanism includes the input PCB component board 10 for installing the AC input circuit, the power conversion PCB component board 20 for installing the primary side circuit of the charging power supply, and the output for installing the USB output circuit through the above technical scheme. PCB component board 30, and a rectification control PCB component board 40 for installing the secondary side circuit of the charging power supply, wherein the input PCB component board 10 is connected to the power conversion PCB component board 20 and the rectification control PCB component board 40 respectively , the power conversion PCB assembly board 20, the rectification control PCB assembly board 40 are also respectively connected with the output PCB assembly board 30, the input PCB assembly board 10, the power conversion PCB assembly board 20, the output PCB assembly board 30, the rectification The control PCB component board 40 forms a square structure around in turn, which solves the problem of the excessive volume of the USB charging power supply mechanism installed in the switch and socket bottom box in the prior art, and the problem of the difference with the traditional switch and socket caused by the large volume. The problem of incompatibility of installation methods enables the USB charging power supply mechanism to meet the safety standards of various regions.

In order to achieve the above purpose, the utility model also proposes a USB charging power module, the USB charging power module includes the USB charging power mechanism proposed in the above embodiment, wherein, the structure and working principle of the USB charging power mechanism have been detailed above elaboration, and will not repeat them here.

It should be noted that, as an implementation, as shown in Figure 17 and Figure 18, the USB charging power supply module proposed by the present invention also includes a plastic housing 70, and the USB charging power supply mechanism is installed on the plastic housing 70 Inside. Wherein, the power input line 80 can be installed on the plastic shell 70, the plastic shell 70 is compatible with the size and installation buckle of the existing low-voltage electrical accessories such as dimmers and switches, and can be concealed in the wall box It can be replaced and installed directly in the user's home.

The USB charging power supply module proposed by the embodiment of the utility model adopts the USB charging power supply mechanism described in the above embodiment, and the mechanism greatly improves the utilization rate of space through the ingenious combination of multiple PCB components, and can greatly reduce the USB charging power supply. The size of the power module makes the structure of multiple PCB components stable and reliable, can effectively complete the function of a complete USB charging power supply, and form a good electrical isolation of input and output, so that the USB charging power module can meet the safety regulations of various regions standard requirement. At the same time, the USB charging power supply module can be matched with different bottom boxes, and is compatible with switches and installation methods currently on the market.

The above are only preferred embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process conversion made by using the description of the utility model and the contents of the accompanying drawings, or directly or indirectly used in other related All technical fields are all included in the scope of patent protection of the utility model in the same way.

Claims (10)

1. A USB charging power supply mechanism, characterized in that it comprises at least four PCB assemblies, and the four PCB assemblies include an input PCB assembly board for installing an AC input circuit, a power conversion for installing a primary side circuit of a charging power supply A PCB component board, an output PCB component board for installing a USB output circuit, and a rectification control PCB component board for installing a secondary side circuit of a charging power supply, wherein the input PCB component board, the power conversion PCB component board, The output PCB assembly board and the rectification control PCB assembly board are sequentially connected, and the input PCB assembly board, power conversion PCB assembly board, output PCB assembly board, and rectification control PCB assembly board are sequentially surrounded to form a square structure. 2. The USB charging power supply mechanism according to claim 1, wherein a first insulating sheet or a first insulating wall is arranged between the output PCB assembly board and the power conversion PCB assembly board, so that the output PCB assembly Electrical isolation is formed between the power conversion PCB component board, and a second insulating sheet or a second insulating wall is arranged between the rectification control PCB component board and the power conversion PCB component board, so that the rectification control PCB component and the power conversion PCB Insulation is formed between component boards. 3. The USB charging power supply mechanism according to claim 2, wherein the first insulating sheet or the first insulating wall, the second insulating sheet or the second insulating wall are Mylar sheets or PVC insulating sheets. 4. The USB charging power supply mechanism according to claim 1, wherein at least two AC input terminals, a fuse, and a rectifier bridge are arranged on the input PCB assembly board; the power conversion PCB assembly board An isolation transformer, a mains input filter circuit, a switching power supply primary side control circuit and a switching circuit are installed on the board; at least one USB terminal and a USB port identification circuit are installed on the output PCB assembly board; the rectification control PCB assembly board is installed There is a rectification and filtering circuit on the secondary side of the charging power supply. 5 . The USB charging power supply mechanism according to claim 4 , wherein the power conversion PCB assembly board and the rectification control PCB assembly board are connected by flying wires. 6 . 6. The USB charging power supply mechanism according to claim 5, wherein there are at least two electrical connection networks between the input PCB assembly board and the power conversion PCB assembly board, and the two electrical connection networks are respectively AC rectifier The output high-voltage DC positive stage and negative stage; there are at least two electrical connection networks between the power conversion PCB component board and the rectification control PCB component board, and the two electrical connection networks are respectively power isolation transformers on the power conversion PCB component board There are at least two electrical connection networks between the output PCB assembly board and the rectification control PCB assembly board, and the two electrical connection networks are respectively the positive and negative stages of the low-voltage direct current output by the charging power supply. 7 . The USB charging power supply mechanism according to claim 6 , wherein the power conversion PCB assembly board and the output PCB assembly board are bridged by a Y capacitor. 8 . 8. The USB charging power supply mechanism according to any one of claims 1-7, wherein the input PCB component board is respectively fixed to the power conversion PCB component board and the rectification control PCB component board through solder joints or pins The output PCB component board is fixedly connected to the power conversion PCB component board and the rectification control PCB component board through solder joints or pins respectively. 9. A USB charging power supply module, characterized in that it comprises the USB charging power supply mechanism according to any one of claims 1-8. 10 . The charging power supply module according to claim 9 , further comprising a plastic housing, and the USB charging power supply mechanism is installed in the plastic housing. 11 .