Electromagnetic shielding assembly, electromagnetic interference and lightning stroke suppression module and power supply

Abstract

The invention discloses an electromagnetic shielding assembly. The assembly comprises an electromagnetic interference shielding piece which comprises a sheet body, at least one bending part, and at least one grounding pin which is arranged on the sheet body or / and the bending part, wherein n included angle is formed between the sheet body and the at least one bending part. The end, away from the sheet body, of each bending part is provided with a welding pin, each welding pin is used for being electrically connected to an auxiliary circuit board, each grounding pin is used for being grounded and locked to a shell of the power supply, and the sheet body and the bending parts are used for wrapping an input socket of the power supply. The electromagnetic interference shielding piece has the functions of EMI shielding, lightning stroke (current) discharging and fixing at the same time, so that the structure is simplified, the discharging speed and time can be increased, and the disturbancequantity of large current to the ground instantly is reduced. The invention also discloses an electromagnetic interference and lightning stroke suppression module and a power supply with the module.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to an electromagnetic shielding component, an electromagnetic interference and lightning strike suppression module, and a power supply. Background technique [0002] A power supply is a device used to convert alternating current into the stable direct current power required by various electronic devices. In order to suppress electromagnetic interference, the power supply will install an electromagnetic interference filter (Electromagnetic Interference, EMI) circuit on the main circuit board, but with the miniaturization and narrowing of the power supply Therefore, there is a design that additionally installs the electromagnetic interference filter circuit on a small board. This small board is perpendicular to the main circuit board and is arranged in the remaining space between the input socket and the fan or between the fan and the housing. However, this This setting will a...

AI Technical Summary

Problems solved by technology

In order to suppress electromagnetic interference, the power supply will install an electromagnetic interference filter (Electromagnetic Interference, EMI) circuit on the main circuit board, but with the miniaturization and narrowing of the power supply Therefore, there is a design that additionally installs the electromagnetic interference filter circuit on a small board. This small board is perpendicular to the main circuit board and is arranged in the remaining space between the input socket and the fan or between the fan and the housing. However, this This setting will affect the internal air flow of the power supply and cause poor heat dissipation

[0003] In addition, the main circuit board of the power supply is also equipped with a lightning strike suppression circuit to suppress the instantaneous high voltage, but the discharge speed for the high voltage test depends on the grounding distance and wire diameter or the area of ​​the grounding device. The current setting method It is easy to cause the problem of poor discharge speed, and its fixed structure is more complicated and increases the cost

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