CN216598278U - Lightning protection circuit of charging socket - Google Patents

Abstract

The utility model discloses a lightning protection circuit of charging socket, including lightning protection module, USB module, socket module and the overload protection module that connects gradually, wherein, the lightning protection module includes two fuses and three MOV lightning protection resistance, a fuse sets up on the zero line, another fuse sets up on the live wire, an MOV lightning protection resistance sets up between zero line and live wire, another MOV lightning protection resistance sets up between zero line and ground wire, another MOV lightning protection resistance sets up between live wire and ground wire; and, the USB module is including converting the high voltage to the voltage conversion circuit of low-voltage, the socket module is provided with USB charging socket, and it is mainly through setting up the lightning protection module between USB module and interchange commercial power end, especially through two fuses and the setting of three MOV lightning protection resistance of lightning protection module, avoids when thunder and lightning weather, uses the influence of electrical apparatus suffered the thunder and lightning, improves the factor of safety of using.

Description

Lightning protection circuit of charging socket

Technical Field

The utility model belongs to the technical field of the socket technique and specifically relates to indicate a lightning protection circuit of socket charges.

Background

The lightning disaster is a serious natural disaster, the lightning disaster accidents are frequent every year, the related range is wide, and the life and property safety of the masses of people is seriously threatened. Lightning stroke discharge not only causes buildings and equipment at lightning stroke points to be damaged, but also causes the lightning stroke energy to be rapidly diffused to all directions in the form of electromagnetic wave radiation and line transmission, so that a plurality of adjacent electronic equipment or power transmission lines can be simultaneously damaged.

With the development of electronic, communication, computer and other technologies, various electronic and electrical devices are applied more and more in life and become an indispensable part of our life. The power socket is used as the last gateway for all electronic and electrical equipment, and must ensure stable and safe operation and provide stable and reliable power supply for the electrical equipment. On one hand, lightning protection anti-interference measures are not considered in most of the conventional common power sockets, and if the conventional common power sockets are interfered by lightning weather, electric equipment is possibly damaged, an electric system is broken down, and safety accidents are easily caused; on the other hand, the function is simple, no safety and protection measures are provided, and once the load exceeds the bearing capacity of the connecting line and the circuit structure, dangerous accidents such as heat accumulation, ignition, circuit breaking, data loss, even electrical fire and the like can be caused.

Taking a mobile phone charging socket as an example, the socket is generally free of lightning protection design, and in recent years, accidents caused by mobile phone charging tend to rise year by year. The mobile phone is charged almost every day, many people have the habit of playing the mobile phone while charging the mobile phone, and also many people can insert the mobile phone to charge all night, and after charging, the mobile phone charging socket is still inserted into the commercial power socket. The weather changes infrequently, when miners strike, easily leads to the cell-phone impaired.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses to the disappearance that prior art exists, its main objective provides a socket's that charges lightning protection circuit, and it is through setting up the lightning protection module between USB module and interchange commercial power end, especially through two fuses of lightning protection module and three MOV lightning protection resistance's setting, has effectively solved receiving thunder and lightning weather interference among the traditional art, leads to the consumer to damage, the problem of power consumption system breakdown, easily cause the incident.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a lightning protection circuit of a charging socket comprises a lightning protection module, a USB module, a socket module and an overload protection module which are sequentially connected, wherein the lightning protection module comprises two fuses and three MOV lightning protection resistors, one fuse is arranged on a zero line, the other fuse is arranged on a live line, one MOV lightning protection resistor is arranged between the zero line and the live line, the other MOV lightning protection resistor is arranged between the zero line and a ground line, and the other MOV lightning protection resistor is arranged between the live line and the ground line; and, the USB module is including converting the high voltage into the voltage conversion circuit of low-voltage, the socket module is provided with USB charging socket, through with the lightning protection module setting between USB module and interchange commercial power end, especially through two fuses of lightning protection module and three MOV lightning protection resistance's setting, avoid when thunder and lightning weather, use electrical apparatus to suffer the influence of thunder and lightning, improve the factor of safety of use, the USB charging socket is connected to the available data line of user, can directly charge to the cell-phone, do not receive the weather condition influence, it is carefree to charge.

As a preferred scheme, the fuse is arranged between an input end NI of the zero line and an output end NO of the zero line, and the other fuse is arranged between an input end LI of the live line and an output end LO of the live line; an MOV lightning protection resistance sets up between the output NO of zero line and the output LO of live wire, and another MOV lightning protection resistance sets up between the output NO of zero line and the input EI of ground wire, and still another MOV lightning protection resistance sets up between the output LO of live wire and the output EO of ground wire, through setting up the fuse in MOV lightning protection resistance's input side, combines the setting of MOV lightning protection resistance, but the effective absorption is too big electric current in the twinkling of an eye, voltage, plays the guard action to electrical apparatus.

As a preferred scheme, the USB module includes a USB circuit board, the voltage conversion circuit is disposed on the USB circuit board, and the USB circuit board is further provided with a rectifying circuit and a filtering circuit, which are sequentially connected to rectify and filter the ac power into dc voltage.

Preferably, the voltage conversion circuit includes a transformer, the overload protection module is connected between the filter circuit and a primary side of the transformer, and a secondary side of the transformer is connected to the jack module.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme, it is mainly through setting up the lightning protection module between USB module and interchange commercial power end, especially through two fuses of lightning protection module and three MOV lightning protection resistance's setting, avoid when thunder and lightning weather, use electrical apparatus to suffer the influence of thunder and lightning, improve the factor of safety of use, the USB charging socket is connected to the available data line of user, can directly charge to the cell-phone, do not receive the weather condition influence, it is carefree to charge.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a control schematic block diagram of an embodiment of the present invention;

fig. 2 is a detailed circuit schematic diagram of a lightning protection module according to an embodiment of the present invention;

fig. 3 is a detailed circuit schematic diagram of the USB module, the socket module, and the overload protection module according to an embodiment of the present invention.

Detailed Description

Fig. 1 to fig. 3 show specific structures of embodiments of the present invention.

As shown in fig. 1, a lightning protection circuit of a charging socket includes a lightning protection module, a USB module, a socket module, and an overload protection module, which are connected in sequence.

As shown in fig. 2, the lightning protection module is including two fuses and three MOV lightning protection resistance, and a fuse sets up on the zero line, and another fuse sets up on the live wire, a fuse sets up between the output NO of the input NI of zero line and zero line, and another fuse sets up between the output LO of the input LI of live wire and live wire, through with the lightning protection module setting between USB module and alternating current commercial power end, especially through the setting of two fuses and three MOV lightning protection resistance of lightning protection module, avoid when thunder and lightning weather, use the influence of thunder and lightning, improve the factor of safety of use, the user can be with the data line connection USB charging socket, can directly charge to the cell-phone, do not receive the weather condition influence, it is carefree to charge. An MOV lightning protection resistance sets up between zero line and live wire, another MOV lightning protection resistance sets up between zero line and ground wire, still another MOV lightning protection resistance sets up between live wire and ground wire, an MOV lightning protection resistance sets up between the output NO of zero line and the output LO of live wire, another MOV lightning protection resistance sets up between the output NO of zero line and the input EI of ground wire, still another MOV lightning protection resistance sets up between the output EO of live wire LO and the output EO of ground wire, through setting up the fuse in MOV lightning protection resistance's input side, combine the setting of MOV lightning protection resistance, can effectively absorb excessive electric current in the twinkling of an eye, voltage, play the guard action to electrical apparatus.

As shown in fig. 3, the labels L, N are connected to the live output LO and the neutral output NO, respectively. The USB module comprises a USB circuit board and a voltage conversion circuit for converting high voltage into low voltage, the voltage conversion circuit comprises a transformer, the overload protection module is connected between the filter circuit and the primary side of the transformer, and the secondary side of the transformer is connected to the socket module. The USB circuit board is also provided with a rectifying circuit and a filter circuit, and the rectifying circuit comprises four diodes which are connected to form an electric bridge type, namely bridge type rectification. The filter circuit comprises an inductor L1, a resistor R1, a filter capacitor EC1 and a filter capacitor EC 2. The rectification circuit, the filter circuit and the voltage conversion circuit are connected in sequence to rectify and filter the alternating current power supply into direct current voltage. The filter circuit is usually used to filter the ripple in the rectified output voltage, and other circuit structures can be adopted, such as various complex filter circuits generally composed of reactance elements, such as a capacitor C connected in parallel with the two ends of a load resistor, or an inductor L connected in series with the load, and composed of a capacitor and an inductor, wherein the filter circuit is used to reduce the alternating current component in the pulsating direct current voltage as much as possible, and retain the direct current component, so that the ripple coefficient of the output voltage is reduced, and the waveform becomes smoother.

The socket module is provided with a USB charging socket, and a user can connect the USB charging socket through a data line and can directly charge the mobile phone.

The utility model discloses a design is key in that, it is mainly through setting up the lightning protection module between USB module and alternating current commercial power end, especially through two fuses of lightning protection module and three MOV lightning protection resistance's setting, avoids when thunder and lightning weather, uses electrical apparatus to suffer the influence of thunder and lightning, improves the factor of safety of using, and the USB charging socket is connected to the available data line of user, can directly charge to the cell-phone, does not receive the weather condition influence, and it is careless to charge.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims (4)

1. The utility model provides a lightning protection circuit of socket charges which characterized in that: the anti-thunder device comprises a lightning protection module, a USB module, a socket module and an overload protection module which are sequentially connected, wherein the lightning protection module comprises two fuses and three MOV lightning protection resistors, one fuse is arranged on a zero line, the other fuse is arranged on a live line, one MOV lightning protection resistor is arranged between the zero line and a live line, the other MOV lightning protection resistor is arranged between the zero line and a ground line, and the other MOV lightning protection resistor is arranged between the live line and the ground line; and the USB module comprises a voltage conversion circuit for converting high voltage into low voltage, and the socket module is provided with a USB charging socket.

2. The lightning protection circuit of a charging socket according to claim 1, wherein: the fuse is arranged between the input end NI of the zero line and the output end NO of the zero line, and the other fuse is arranged between the input end LI of the live line and the output end LO of the live line; an MOV lightning protection resistor is arranged between the output end NO of the zero line and the output end LO of the live line, another MOV lightning protection resistor is arranged between the output end NO of the zero line and the input end EI of the ground line, and another MOV lightning protection resistor is arranged between the output end LO of the live line and the output end EO of the ground line.

3. The lightning protection circuit of a charging socket according to claim 1 or 2, characterized in that: the USB module comprises a USB circuit board, the voltage conversion circuit is arranged on the USB circuit board, the USB circuit board is further provided with a rectifying circuit and a filtering circuit, and the rectifying circuit, the filtering circuit and the voltage conversion circuit are sequentially connected.

4. The lightning protection circuit of a charging socket according to claim 3, wherein: the voltage conversion circuit comprises a transformer, the overload protection module is connected between the filter circuit and the primary side of the transformer, and the secondary side of the transformer is connected with the socket module.

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