CN217282204U - Photovoltaic power lightning protection device capable of completely blocking arc extinction - Google Patents

Abstract

The utility model discloses a photovoltaic power lightning protection device capable of completely blocking arc extinction, which comprises a module box and a module base, wherein the module box is in a flat square shape, the module base is in a concave flat box structure, the module box is inserted in the middle above the module base, and the module box is internally provided with a piezoresistor, a tripping elastic sheet, a tripping color-changing sheet, a ceramic arc-extinguishing cover, a top spring, a tension spring and a braided copper strip; the module base is internally provided with a front wiring terminal, a front terminal connecting piece, a rear wiring terminal and a rear terminal connecting piece; the middle electrode piece on piezo-resistor wears out in the module box, passes through low temperature soldering tin with the one end of dropout shell fragment and is connected, the pottery arc-extinguishing cover is pegged graft through the forked tail tongue in forked tail recess and the module box, when the piezo-resistor became invalid and generates heat and arouses dropout shell fragment and the separation of electrode piece on the piezo-resistor, pottery trip cover shelters electrode piece on the piezo-resistor completely under the promotion of top spring, has avoided the production of dropout arcing phenomenon, has prevented the danger of starting a fire, has guaranteed photovoltaic power supply lightning protection device's safety in utilization.

Description

Photovoltaic power supply lightning protection device capable of completely blocking arc extinction

Technical Field

The utility model relates to a power lightning protection technical field, in particular to hide photovoltaic power lightning protection device of disconnected arc extinguishing entirely.

Background

The photovoltaic power supply lightning protection device is a lightning protection device for the solar power generation device, and photovoltaic power generation is a green clean energy which is advocated and developed by the current nation vigorously, so that the photovoltaic power supply lightning protection device has a long-term development prospect. The lightning protection of the photovoltaic power generation equipment is determined from the integral installation position of the photovoltaic power generation equipment, the outdoor part is mainly a solar panel, the direct lightning strike prevention disturbance is considered, and the protection is carried out by depending on a lightning rod, a lightning protection net, a lightning protection belt and the like; the indoor part mainly comprises a combiner box, an inverter and the like, and a special photovoltaic power lightning protector is required to be adopted to protect the impact of induced lightning.

The photovoltaic power generation pre-stage equipment arranged indoors bears high-voltage direct current voltage, the post-stage equipment converts the direct current voltage into alternating current voltage through the inverter, the photovoltaic power supply lightning protection device is mainly used for lightning protection of a high-voltage direct current power supply part, and the lightning protection of the alternating current power supply device can be protected by a common alternating current power supply lightning protection device. Photovoltaic power supply lightning protection when using connects in parallel between high voltage direct current power supply terminal and ground, in case receive the response lightning impulse on the power supply line, the lightning protection device is inside just to earth conduction discharge, will be restricted in the voltage protection horizontal range that can bear by protective apparatus, reaches lightning protection's purpose. However, since the power lightning protection device itself may be deteriorated, short-circuited and failed, the overcurrent tripping mechanism is arranged in the lightning protection device, so that the fault of ground short circuit of the protected power circuit can be prevented; when the photovoltaic power supply lightning protection device is tripped, because the direct-current power supply does not generate zero crossing points, continuous arc discharge can be generated at a tripping contact, and the danger of fire ignition of peripheral devices can be caused in serious cases; however, the photovoltaic power supply lightning protection device in the current market is designed to be incomplete for an internal tripping and arc extinguishing mechanism for preventing failure, and brings certain hidden danger to the application of photovoltaic system power supply lightning protection.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, an object of the utility model is to provide a photovoltaic power supply lightning protection device of breaking arc extinguishing entirely hides, it is tight mainly to sheltering from between the direct current lightning protection device electrode when the inefficacy is tripped, "draw the arc" phenomenon that leads to appearing electric arc can not break off, adopted high temperature resistant, the ceramic arc chute of high strength covers voltage-sensitive upper electrode piece completely, realized with the thorough isolation of dropout shell fragment, the arc that draws between the dropout contact is prevented reliably and is struck sparks danger, the use that makes the photovoltaic power supply lightning protection is safer.

For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes: the utility model provides a photovoltaic power lightning protection device of arc extinguishing entirely hides absolutely which characterized in that: the module box is in a flat square shape, the module base is in a concave flat box structure, the module box is inserted in the middle above the module base, and the module box is internally provided with a piezoresistor, a tripping elastic sheet, a tripping color-changing sheet, a ceramic arc-extinguishing cover, a top spring, a tension spring and a braided copper strip; the module base is internally provided with a front wiring terminal, a front terminal connecting piece, a rear wiring terminal and a rear terminal connecting piece; the module box is internally divided into an upper layer and a lower layer, a flat square piezoresistor is arranged on the lower layer, a piezoupper electrode plate and a piezoside electrode plate are arranged on the piezoresistor, the piezoupper electrode plate penetrates out of the middle of the module box to the upper layer, and the piezoupper electrode plate is connected with the lower end of the tripping elastic sheet through low-temperature soldering tin; the module box is provided with a dovetail convex groove leading to the edge of the module box, the lower part of the ceramic arc-extinguishing cover is provided with a dovetail groove, the dovetail groove of the ceramic arc-extinguishing cover is inserted in the dovetail convex groove on the upper bottom surface of the module box, the rear end of the ceramic arc-extinguishing cover is provided with a top spring positioning rod, the top spring positioning rod is sleeved with a top spring, the ceramic arc-extinguishing cover is jacked towards the direction of the pressure-sensitive upper electrode plate by the top spring, when the tripping elastic sheet and the pressure-sensitive upper electrode plate are welded together by low-temperature welding tin, the lower end of the tripping elastic sheet blocks the front end of the ceramic arc-extinguishing cover, and the front part of the pressure-sensitive upper electrode in the middle of the upper bottom surface of the module box is provided with a stop block.

Further, the extension spring is adorned in the top on module box upper strata, the dropout changes the colour piece and adorns in the left side on module box upper strata, and the inside on module box top right side is colluded to the one end of extension spring, and the other end of extension spring colludes the side that changes the colour piece in the dropout.

Furthermore, a small square transparent observation window is arranged on the rear side of the top surface of the module box and is aligned with the upper part of the top end of a tripping color-changing sheet in the module box, and a green color block is arranged on the upper part of the top end of the tripping color-changing sheet; a raised head is arranged in the middle of the side face of the tripping color conversion sheet and is pressed against the side face of the tripping elastic sheet, and a red color block is arranged in a module box below the green color block of the tripping color conversion sheet.

Furthermore, an elastic sheet positioning column is arranged at the upper right part of the bottom surface of the upper layer of the module box, and the rear end of the tripping elastic sheet is sleeved on the elastic sheet positioning column; and a rotating sheet positioning column is arranged on the left lower part of the bottom surface of the upper layer of the module box, and the lower end of the tripping rotating sheet is sleeved on the rotating sheet positioning column.

Furthermore, an electrode front pin and an electrode rear pin which penetrate out of the module box are respectively arranged below the module box, and the interior of the electrode front pin is connected with the side surface of the tripping elastic sheet through one woven copper strip; the inner part of the electrode back pin is connected with a pressure-sensitive side electrode plate of the bottom layer piezoresistor of the module box.

Furthermore, a round front screw hole is formed in the upper portion of the front side of the module base, a square front wiring hole is formed in the end face of the front side, a round rear screw hole is formed in the upper portion of the rear side of the module base, a square rear wiring hole is formed in the end face of the rear side, and a wide dovetail-shaped guide rail bayonet is formed in the lower portion of the module base.

Furthermore, a front wiring screw is screwed above a front wiring terminal arranged in the front side of the module base, and the front wiring screw is aligned with a front screw hole on the upper module base; a rear wiring screw is screwed above a rear wiring terminal arranged in the rear side of the module base, and the rear wiring screw is aligned with a rear screw hole in the upper module base.

Furthermore, the lower part of a front wiring terminal in the front side of the module base is connected with a bent front terminal connecting piece, the left lower end of the front terminal connecting piece is provided with a pin hole, and the pin hole is connected with a front electrode pin extending out of the lower part of the module box; the lower part of a rear wiring terminal in the rear side of the module base is connected with a bent rear terminal connecting piece, the right lower end of the rear terminal connecting piece is provided with a pin hole, and the pin hole is connected with an electrode rear pin extending out of the lower part of the module box.

The utility model has the advantages that: when photovoltaic power supply unit received the thunder and lightning disturbance, and connect between photovoltaic power supply equipment terminal and the earth the utility model discloses the product can switch on the earial drainage and discharge, when lightning protection device itself became invalid and generate heat and arouse the internal electrode to trip, utilize the removal of pottery arc-extinguish chamber to shelter from the clearance of electrode trip point, cut off the continuation arc-discharge that photovoltaic DC power supply probably produced completely, stopped the unfavorable and danger that lightning protection device probably caused photovoltaic power supply line when trouble itself, make photovoltaic power supply lightning protection device's use do safety, reliable, relieved, be convenient for the utility model discloses the product is in the popularization and the application in photovoltaic power supply lightning protection field.

Drawings

Fig. 1 is a schematic diagram of the overall structure and the tripping of the elastic sheet and the electrode of the present invention;

FIG. 2 is a schematic view of the ceramic arc chute shielding electrode when tripping according to the present invention;

FIG. 3 is a detailed structural diagram of the ceramic arc-extinguishing chamber of the present invention;

fig. 4 is a detailed view of the connection between the tripping elastic sheet and the upper electrode plate of the pressure sensitive device of the present invention;

FIG. 5 is a detailed view of the breaking electrode of the ceramic arc chute when tripping according to the present invention;

fig. 6 is a schematic diagram of the structural position of the electrode plate of the varistor of the present invention;

wherein: 1-module box, 1 a-baffle block, 1 b-elastic sheet positioning column, 1 c-rotating sheet positioning column, 1 d-dovetail convex groove, 1 e-observation window, 1 f-red color block, 2-module base, 2 a-front screw hole, 2 b-front wiring hole, 2 c-rear screw hole, 2 d-rear wiring hole, 2 e-guide rail bayonet, 3-tension spring, 4-woven copper strip, 5-tripping elastic sheet, 6-front wiring terminal, 6 a-front wiring screw, 6 b-front terminal connecting sheet, 7-rear wiring terminal, 7 a-rear wiring screw, 7 b-rear terminal connecting sheet, 8-ceramic arc extinguishing cover, 8 a-top spring positioning rod, 8 b-electrode arc extinguishing cover, 8 c-dovetail groove, 9-top spring, 10-electrode front pin, 11-electrode rear pin, 12-tripping color conversion sheet, 12 a-green color block, 13-piezoresistor, 13 a-voltage-sensitive upper electrode sheet, 13 b-voltage-sensitive side electrode sheet and 14-low-temperature soldering tin.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

As shown in fig. 1, the overall structure and the tripping schematic diagram of the elastic sheet and the electrode of the present invention, fig. 3 is the detailed structure schematic diagram of the ceramic arc-extinguishing chamber of the present invention, fig. 4 is the detailed diagram of the connection between the tripping elastic sheet and the voltage-sensitive upper electrode plate of the present invention, and fig. 6 is the structural position schematic diagram of the voltage-sensitive resistance-removing electrode plate of the present invention; in combination with the four figures, it can be seen that: the utility model discloses an overall structure includes module box 1 and module base 2, module box 1 is flat square shape, module base 2 is the concave flat box structure in the middle of the both ends height, module box 1 cartridge is in the middle concave part of module base 2 top, module box 1 is inside to be divided into upper and lower two-layer, and the upper strata is equipped with dropout shell fragment 5, dropout color conversion piece 12, ceramic arc-extinguish chamber 8, top spring 9, extension spring 3 and weaving copper strips 4; the lower layer is provided with a flat square piezoresistor 13, the piezoresistor 13 is provided with a pressure-sensitive upper electrode plate 13a and a pressure-sensitive side electrode plate 13b, the pressure-sensitive upper electrode plate 13a penetrates out of the middle of the module box to the upper layer, the pressure-sensitive upper electrode plate 13a is connected with the lower end of the tripping elastic sheet 5 through low-temperature soldering tin 14, the melting point of the low-temperature soldering tin is only 145 ℃, and the low-temperature soldering tin is easy to melt after receiving heat so as to trip the electrode of the welding point; the pressure-sensitive upper electrode plate 13a penetrates out of a dovetail convex groove 1d arranged on the bottom surface of the module box 1, a dovetail groove 8c is arranged at the lower part of the ceramic arc-extinguishing cover 8, the dovetail groove 8c of the ceramic arc-extinguishing cover 8 is inserted on the dovetail convex groove 1d on the bottom surface of the upper layer of the module box 1, the ceramic arc-extinguishing cover 8 can move on the dovetail convex groove, a top spring positioning rod 8a is arranged at the rear end of the ceramic arc-extinguishing cover 8, a top spring 9 is sleeved on the top spring positioning rod 8a, the top spring 9 pushes the ceramic arc-extinguishing cover 8 to the direction of the pressure-sensitive upper electrode plate 13a, when the tripping elastic plate 5 and the pressure-sensitive upper electrode plate 13a are welded together by using low-temperature welding tin, the lower end of the tripping elastic plate 5 blocks the front end of the ceramic arc-extinguishing cover, at the moment, the top spring is in a compressed state, the pressure-sensitive upper electrode plate is in an exposed state, a stop block 1a is arranged in front of the pressure-sensitive electrode in the middle of the bottom surface of the upper layer of the module box, the ceramic arc-extinguishing cover is used for limiting the ceramic arc-extinguishing cover after covering the voltage-sensitive upper electrode plate when tripping; the tension spring is arranged above the upper layer of the module box, the tripping color-changing sheet is arranged on the left side of the upper layer of the module box, one end of the tension spring is hooked in the right side of the upper part of the module box, and the other end of the tension spring is hooked on the side surface of the tripping color-changing sheet; a small square transparent observation window 1e is arranged on the rear side of the top surface of the module box and is aligned with the upper part of the top end of a tripping color-changing sheet in the module box, and a green color block 12a is arranged on the upper part of the top end of the tripping color-changing sheet; the middle of the side surface of the tripping color conversion sheet is provided with a raised head which is pressed against the side surface of the tripping elastic sheet; when the product is not tripped, the upper part of the trip color conversion sheet is close to the left, and a manager can see the green mark on the trip color conversion sheet on the outer side above the module box through the observation window, wherein the green mark indicates that the product is in a normal working state; the tension spring is in a stretching state; when the tripping is not carried out, the green color block of the tripping color conversion sheet blocks a red color block 1f arranged in the lower module box; the upper right side of the bottom surface of the upper layer of the module box is provided with an elastic sheet positioning column 1b for sleeving the rear end of a tripping elastic sheet on the elastic sheet positioning column, and the tripping elastic sheet can rotate around the elastic sheet positioning column; a rotating sheet positioning column 1c is arranged on the left lower side of the bottom surface of the upper layer of the module box, the lower end of the tripping color-changing sheet is sleeved on the rotating sheet positioning column, and the tripping color-changing sheet can rotate around the rotating sheet positioning column; an electrode front pin 10 and an electrode rear pin 11 which penetrate out of the module box are respectively arranged below the module box, and the inside of the electrode front pin is connected with the side surface of the tripping elastic sheet through a braided copper strip 4; the inner part of the electrode back pin is connected with a pressure-sensitive side electrode plate of the bottom layer piezoresistor of the module box.

Also visible in fig. 1 are: a front wiring terminal 6, a front terminal connecting piece 6b, a rear wiring terminal 7 and a rear terminal connecting piece 7b are arranged in the module base 2 below the module box; a round front screw hole 2a is arranged above the front side of the module base 2, a square front wiring hole 2b is arranged on the front side end face, a round rear screw hole 2c is arranged above the rear side of the module base 2, and a square rear wiring hole 2d is arranged on the rear side end face; a wide dovetail-shaped guide rail bayonet 2e is arranged below the module base and is used for installing the product on a guide rail in photovoltaic power supply equipment; a front wiring screw 6a is screwed above a front wiring terminal arranged in the front side of the module base, and the front wiring screw 6a is aligned with the front screw hole 2a on the upper module base; a rear wiring screw 7a is screwed above a rear wiring terminal arranged in the rear side of the module base, and the rear wiring screw 7a is aligned with a rear screw hole 2c on the upper module base; when the photovoltaic power supply circuit is installed and used, the wire head of the wire externally connected with the photovoltaic power supply circuit extends into the front wiring hole 2b and then penetrates into the front wiring terminal 6, and a screwdriver is adopted to deeply screw the front wiring screw 6a from the front screw hole 2 a; a wire head of a wire externally connected with a ground circuit is extended into the rear wiring hole 2d and then is inserted into the rear wiring terminal 7, and a screwdriver is adopted to deeply screw the rear wiring screw 7a from the rear screw hole 2 c; the lower part of a front connecting terminal 6 in the front side of the module base is connected with a bent front terminal connecting piece 6b, the left lower end of the front terminal connecting piece 6b is provided with a pin hole, and the pin hole is connected with an electrode front pin 10 extending out of the lower part of the module box; the lower part of a rear connecting terminal 7 in the rear side of the module base is connected with a bent rear terminal connecting piece 7b, the right lower end of the rear terminal connecting piece 7b is provided with a pin hole, and the pin hole is connected with an electrode rear pin 11 extending out of the lower part of the module box; through these connections it can be seen that: the lead of the external photovoltaic power supply is connected with the voltage-sensitive upper electrode plate after passing through the front wiring terminal, the front terminal connecting piece, the front electrode pin, the woven copper strip and the tripping elastic piece; external earth wire is connected with pressure-sensitive side electrode slice after binding post, rear terminal even piece, back electrode are participated in, when the electrode is not tripped like this, use piezo-resistor as core element the utility model discloses the product just connects in parallel between photovoltaic power supply circuit and earth, plays lightning protection's effect.

As shown in fig. 2, it is the utility model discloses pottery arc-chute shielding electrode schematic diagram when tripping, fig. 5 is the utility model discloses pottery arc-chute shielding electrode detail view when tripping, can find out in the detail view of pottery arc-chute in combining fig. 3: this is the utility model discloses the state when the product is in the electrode and drops off, the reason of dropping off is that the inside core component piezo-resistor of photovoltaic power supply lightning arrester receives excessive lightning impulse or deterioration of itself, it is ageing, became invalid or take place the short circuit, lead to the piezo-resistor to generate heat, cause welded low temperature soldering tin between piezo-resistor upper electrode piece and the dropout shell fragment to take place to melt, make piezo-resistor upper electrode piece and dropout shell fragment dropout separation, equal to break off and connect between photovoltaic power supply terminal and ground, the photovoltaic power supply lightning arrester that breaks down, the danger of protected photovoltaic power supply circuit and ground short circuit has been avoided; when the utility model discloses the inside low temperature soldering tin of product melts the dropout, the extension spring is held the upper portion of dropout color conversion piece, makes it rotate clockwise around the rotation piece reference column and draw to the right side to make the green color piece on top remove from the observation window, expose a piece of red color piece that is equipped with in the module box, managers just can see red suggestion from the observation window, "red" indicates that this lightning protection product is in failure state, should in time handle the trouble; when the electrode is tripped, the raised head in the middle of the color conversion sheet is propped against the side surface of the tripping elastic sheet to enable the side surface to rotate anticlockwise around the elastic sheet positioning column, so that the connection part of the lower end of the tripping elastic sheet and the upper pressure-sensitive electrode is separated quickly, when the lower end of the tripping elastic sheet springs to the right, the ceramic arc-extinguishing cover moves upwards under the action of the top spring to quickly cover the voltage-sensitive electrode plate, wherein the dovetail groove under the ceramic arc-extinguishing cover is matched with the module and the middle dovetail convex groove, on one hand, the electric arc can not be discharged and turned, on the other hand, the movement of the ceramic arc-extinguishing cover can not deviate from sliding out, after the ceramic arc-extinguishing cover moves to the stop block in the front module box, the pressure-sensitive upper electrode plate is just covered completely, so that arc discharge cannot be generated between the pressure-sensitive upper electrode plate and the tripping elastic sheet, therefore, the tripping process is safe and reliable, and the photovoltaic power supply lightning protector is applied without worry.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (8)

1. The utility model provides a photovoltaic power lightning protection device of arc extinguishing entirely hides absolutely which characterized in that: the module box is in a flat square shape, the module base is in a concave flat box structure, the module box is inserted in the middle above the module base, and the module box is internally provided with a piezoresistor, a tripping elastic sheet, a tripping color-changing sheet, a ceramic arc-extinguishing cover, a top spring, a tension spring and a braided copper strip; the module base is internally provided with a front wiring terminal, a front terminal connecting piece, a rear wiring terminal and a rear terminal connecting piece; the module box is internally divided into an upper layer and a lower layer, a flat square piezoresistor is arranged on the lower layer, a piezoupper electrode plate and a piezoside electrode plate are arranged on the piezoresistor, the piezoupper electrode plate penetrates out of the middle of the module box to the upper layer, and the piezoupper electrode plate is connected with the lower end of the tripping elastic sheet through low-temperature soldering tin; the module box is provided with a dovetail convex groove leading to the edge of the module box, the lower part of the ceramic arc-extinguishing cover is provided with a dovetail groove, the dovetail groove of the ceramic arc-extinguishing cover is inserted in the dovetail convex groove on the upper bottom surface of the module box, the rear end of the ceramic arc-extinguishing cover is provided with a top spring positioning rod, the top spring positioning rod is sleeved with a top spring, the ceramic arc-extinguishing cover is jacked towards the direction of the pressure-sensitive upper electrode plate by the top spring, when the tripping elastic sheet and the pressure-sensitive upper electrode plate are welded together by low-temperature welding tin, the lower end of the tripping elastic sheet blocks the front end of the ceramic arc-extinguishing cover, and the front part of the pressure-sensitive upper electrode in the middle of the upper bottom surface of the module box is provided with a stop block.

2. The photovoltaic power supply lightning protector capable of fully interrupting and extinguishing arc according to claim 1, is characterized in that: the extension spring is adorned in the top on module box upper strata, the dropout changes the left side of look piece dress in module box upper strata, and the inside on module box top right side is colluded to the one end of extension spring, and the other end of extension spring colludes the side of changeing the look piece in the dropout.

3. The photovoltaic power supply lightning protector capable of fully interrupting and extinguishing arc according to claim 1, is characterized in that: a small square transparent observation window is arranged on the rear side of the top surface of the module box and is aligned to the upper part of the top end of a tripping color-changing sheet in the module box, and a green color block is arranged on the upper part of the top end of the tripping color-changing sheet; a raised head is arranged in the middle of the side face of the tripping color conversion sheet and is pressed against the side face of the tripping elastic sheet, and a red color block is arranged in a module box below the green color block of the tripping color conversion sheet.

4. The photovoltaic power supply lightning protector capable of fully interrupting and extinguishing arc according to claim 1, is characterized in that: an elastic sheet positioning column is arranged at the upper right part of the bottom surface of the upper layer of the module box, and the rear end of the tripping elastic sheet is sleeved on the elastic sheet positioning column; and a rotating sheet positioning column is arranged on the left lower part of the bottom surface of the upper layer of the module box, and the lower end of the tripping rotating sheet is sleeved on the rotating sheet positioning column.

5. The lightning protection device for the photovoltaic power supply with the full arc interruption function according to claim 1, wherein: the lower part of the module box is respectively provided with an electrode front pin and an electrode rear pin which penetrate out of the module box, and the interior of the electrode front pin is connected with the side surface of the tripping elastic sheet through the braided copper strip; the inner part of the electrode back pin is connected with a pressure-sensitive side electrode plate of the bottom layer piezoresistor of the module box.

6. The photovoltaic power supply lightning protector capable of fully interrupting and extinguishing arc according to claim 1, is characterized in that: the module is characterized in that a circular front screw hole is formed in the upper portion of the front side of the module base, a square front wiring hole is formed in the end face of the front side, a circular rear screw hole is formed in the upper portion of the rear side of the module base, a square rear wiring hole is formed in the end face of the rear side, and a wide-dovetail-shaped guide rail bayonet is formed in the lower portion of the module base.

7. The photovoltaic power supply lightning protector capable of fully interrupting and extinguishing arc according to claim 1, is characterized in that: a front wiring screw is screwed above a front wiring terminal arranged in the front side of the module base, and the front wiring screw is aligned with a front screw hole on the upper module base; a rear wiring screw is screwed above a rear wiring terminal arranged in the rear side of the module base, and the rear wiring screw is aligned with a rear screw hole in the upper module base.

8. The lightning protection device for the photovoltaic power supply with the full arc interruption function according to claim 1, wherein: the lower part of a front wiring terminal in the front side of the module base is connected with a bent front terminal connecting piece, the left lower end of the front terminal connecting piece is provided with a pin hole, and the pin hole is connected with an electrode front pin extending out of the lower part of the module box; the lower part of a rear wiring terminal in the rear side of the module base is connected with a bent rear terminal connecting piece, the right lower end of the rear terminal connecting piece is provided with a pin hole, and the pin hole is connected with an electrode rear pin extending out of the lower part of the module box.

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