CN-224218577-U - Lightning protection structure of photovoltaic energy storage power supply PCB board

Abstract

The utility model relates to the technical field of protection of a photovoltaic energy storage power supply PCB, and discloses a lightning protection structure of the photovoltaic energy storage power supply PCB, which comprises a PCB body, wherein a power input port and a power output port are arranged on the side edge of the top of the PCB body, a surge protector I is arranged on the back of the power input port, a surge protector II is arranged on the back of the power output port, a metal shielding cover is arranged on the top of the PCB body, four corners of the metal shielding cover are connected with the PCB body in a matched manner through an adapting screw, a cutter-shaped discharging assembly I and a cutter-shaped discharging assembly II are arranged on the side edge of the top of the PCB body, the cutter-shaped discharging assembly I and the cutter-shaped discharging assembly II are in axisymmetric distribution, the photovoltaic energy storage power supply PCB effectively guarantees the safety of the whole structure through the surge protector arranged on the top, the cutter-shaped discharging assembly and the metal shielding cover, prevents the damage to the photovoltaic energy storage power supply PCB body caused by lightning stroke, and guarantees the energy storage safety of the photovoltaic energy storage power supply.

Inventors

• XU JIZONG
• LI CANHUA

Assignees

• 深圳市腾达翔电子科技有限公司

Dates

Publication Date

20260508

Application Date

20250520

Claims (6)

1. 1. A lightning protection structure of a photovoltaic energy storage power supply PCB comprises a PCB body (1) and is characterized in that a power input port (2) and an output port (7) are arranged on the side edge of the top of the PCB body (1), a surge protector I (3) is arranged on the back of the power input port (2), a surge protector II (8) is arranged on the back of the output port (7), a metal shielding cover (4) is arranged on the top of the PCB body (1), four corners of the metal shielding cover (4) are connected with the PCB body (1) in a matched mode through an adapting screw, a cutter-shaped discharging assembly I (5) and a cutter-shaped discharging assembly II (6) are arranged on the side edge of the top of the PCB body (1), and the cutter-shaped discharging assembly I (5) and the cutter-shaped discharging assembly II (6) are in axisymmetric distribution.
2. 2. The lightning protection structure of the photovoltaic energy storage power supply PCB of claim 1, wherein the first surge protector (3) and the second surge protector (8) are identical in structure, and the first surge protector (3) is any one of a piezoresistor and a transient suppression diode component.
3. 3. The lightning protection structure of the photovoltaic energy storage power supply PCB is characterized in that the metal shielding cover (4) is of an inverted hollow rectangular box body structure, connecting holes (9) are formed in four corners of the bottom of the metal shielding cover (4), the connecting holes (9) are connected with the top of the PCB body (1) in a matched mode through adapting screws, core components (10) are correspondingly covered in the metal shielding cover (4), and the core components (10) are correspondingly connected with the top of the PCB body (1).
4. 4. The lightning protection structure of the photovoltaic energy storage power supply PCB board of claim 3, wherein the metal shielding case (4) is any one of copper and aluminum materials.
5. 5. The lightning protection structure of the photovoltaic energy storage power supply PCB board of claim 1, wherein the first valve-knife-shaped discharging component (5) and the second valve-knife-shaped discharging component (6) are identical in structure, the first valve-knife-shaped discharging component (5) is composed of two parts, namely a grounding ring (11) and a grounding end (12), the grounding end (12) is arranged in the grounding ring (11), the bottom of the grounding end (12) is correspondingly connected with an internal circuit of the PCB board body (1), and a vertical discharging tip (13) and a horizontal discharging tip (14) are arranged at the top of the grounding end (12).
6. 6. The lightning protection structure of the photovoltaic energy storage power supply PCB of claim 5, wherein the power lines and the signal lines in the PCB body (1) are arranged in a non-parallel manner, and the power lines are designed in a serpentine winding manner.

Description

Lightning protection structure of photovoltaic energy storage power supply PCB board Technical Field The utility model relates to the technical field of protection of photovoltaic energy storage power supply PCB boards, in particular to a lightning protection structure of a photovoltaic energy storage power supply PCB board. Background Along with the wide application of the photovoltaic energy storage technology in the renewable energy field, the requirements of a photovoltaic energy storage power supply system on stability and safety are severe, however, surge overvoltage and electromagnetic pulse generated by lightning stroke phenomenon can cause serious threat to sensitive electronic elements on a PCB (printed circuit board), on one hand, the surge overvoltage can cause instantaneous breakdown of elements such as chips, capacitors and resistors on the PCB, short circuit or open circuit faults are caused, the normal operation of the power supply system is directly affected, and on the other hand, the electromagnetic pulse generated by lightning stroke can cause interference to a signal transmission line on the PCB through electromagnetic coupling, so that data transmission errors and even system breakdown are caused. At present, when the complex and changeable lightning stroke environment is handled to traditional lightning stroke protection architecture, there are not enough, the response speed scheduling problem of protective capability, for this we provide a lightning stroke protection architecture of photovoltaic energy storage power supply PCB board. Disclosure of utility model (One) solving the technical problems Aiming at the defects of the prior art, the utility model provides a lightning protection structure of a photovoltaic energy storage power supply PCB board, which solves the problems. (II) technical scheme In order to achieve the purpose, the technical scheme is that the lightning protection structure of the photovoltaic energy storage power supply PCB comprises a PCB body, a power supply input port and a power supply output port are arranged on the side edge of the top of the PCB body, a surge protector I is arranged on the back of the power supply input port, a surge protector II is arranged on the back of the power supply output port, a metal shielding cover is arranged on the top of the PCB body, four corners of the metal shielding cover are connected with the PCB body in a matched mode through an adapting screw, a cutter-shaped discharging assembly I and a cutter-shaped discharging assembly II are arranged on the side edge of the top of the PCB body, and the cutter-shaped discharging assembly I and the cutter-shaped discharging assembly II are distributed in an axisymmetric mode. Preferably, the first surge protector is consistent with the second surge protector in structure, and the first surge protector is any one of a piezoresistor and a transient suppression diode component. Preferably, the whole hollow rectangular box body structure that is inverts of metal shield, the connecting hole has been seted up in metal shield bottom four corners, and the connecting hole is connected through adapting screw and the cooperation of PCB board body top, and the inside core components and parts that correspond of metal shield cover, and core components and parts correspond to be connected with PCB board body top. Preferably, the metal shielding case is made of any one of copper and aluminum materials. Preferably, the first valve knife-shaped discharging component is consistent with the second valve knife-shaped discharging component in structure, the first valve knife-shaped discharging component consists of two parts, namely a grounding ring and a grounding end, the grounding ring is internally provided with the grounding end, the bottom of the grounding end is correspondingly connected with an internal circuit of the PCB body, and the top of the grounding end is provided with a vertical discharging tip and a horizontal discharging tip. Preferably, the power lines and the signal lines in the PCB body are arranged in a non-parallel mode, and the power lines are designed in a serpentine winding mode. (III) beneficial effects Compared with the prior art, the utility model provides a lightning protection structure of a photovoltaic energy storage power supply PCB, which has the following beneficial effects: 1. This protection architecture is hit in lightning protection of photovoltaic energy storage power supply PCB board, the protection is comprehensive high-efficient, surge protector one, surge protector two follow power input and output both ends, restrict and release surge overvoltage, the metal shield resists electromagnetic pulse interference, the first and second supplementary overvoltage that releases of the sword-shaped subassembly that discharges of sword-shaped discharging, the rational arrangement of power cord and signal line reduces electromagnetic interference, the multiunit spare co