CN210957779U

CN210957779U - Lightning protection module

Info

Publication number: CN210957779U
Application number: CN201921820370.4U
Authority: CN
Inventors: 惠欲晓; 章志; 胡勇; 王旭明; 王炎林
Original assignee: SHENZHEN RUILONGYUAN ELECTRONICS CO Ltd
Current assignee: SHENZHEN RUILONGYUAN ELECTRONICS CO Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-07-07
Anticipated expiration: 2029-10-25

Abstract

The utility model relates to a surge protector technical field provides a lightning protection module, include: the LED lamp comprises a first pin and a second pin which are arranged oppositely, wherein a piezoresistor, a circuit board and a discharge tube are sequentially arranged between the first pin and the second pin, the first pin is electrically connected with the piezoresistor, the second pin is respectively electrically connected with the circuit board and the discharge tube, the circuit board is electrically connected with the piezoresistor, and the discharge tube is electrically connected with the piezoresistor. The piezoresistor and the discharge tube are combined together through the circuit board, so that on one hand, leakage current can be well cut off and limited, the uncontrollable state of the leakage current is solved, the use reliability of the leakage current is improved, on the other hand, the surge capacity can be absorbed and released in a segmented manner, the surge inhibition effect is improved, and the service life of the surge can be effectively prolonged; meanwhile, the structure of the lightning protection module is simplified, so that the structure is simplified and miniaturized, and the cost is reduced.

Description

Lightning protection module

Technical Field

The utility model belongs to the technical field of surge protector technique and specifically relates to a lightning protection module is related to.

Background

Reasons for the surge (transient impulse) typically include lightning, poor grounding, inductive load switching, mains failure removal, and ESD (Electro-Static discharge). The result may be data loss or damage, or even equipment destruction, with the most disruptive surges caused by lightning.

The existing method for preventing the damage of the lightning surge usually uses a surge protection device at the front end of a power adapter of electric equipment, the surge protection device usually adopts a shell, and piezoresistors or discharge tubes and other components arranged in the shell are large in size, complex in structure and high in cost, and when the discharge tubes or the piezoresistors are used independently, the problems of large electric leakage, easy cracking, fire starting, follow current and the like exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lightning protection module aims at solving among the prior art surge protection device structure complicacy, the higher technical problem of cost.

In order to achieve the above object, the utility model adopts the following technical scheme: a lightning protection module, comprising: the LED lamp comprises a first pin and a second pin which are arranged oppositely, a piezoresistor, a circuit board and a discharge tube are arranged between the first pin and the second pin, the first pin is electrically connected with the piezoresistor, the second pin is respectively electrically connected with the circuit board and the discharge tube, the circuit board is electrically connected with the piezoresistor, and the discharge tube is electrically connected with the piezoresistor.

In one embodiment, the circuit board is a circular circuit board, and the circuit board is provided with a through hole along an axial direction thereof for mounting the discharge tube.

In one embodiment, a soldering lug is arranged on one side of the circuit board close to the second pin, and the soldering lug is electrically connected with the second pin.

In one embodiment, the circuit board is provided with a tin coating layer on one side close to the piezoresistor, and the tin coating layer is electrically connected with the piezoresistor.

In one embodiment, the first pin is electrically connected to the varistor through a first solder foil, and the second pin is electrically connected to the discharge tube through a second solder foil.

In one embodiment, the discharge tube and the circuit board are electrically connected to the varistor through a third solder foil.

In one embodiment, the discharge tube includes: the electrode plate comprises a ceramic chip, and a first electrode plate and a second electrode plate which are respectively arranged on two opposite sides of the ceramic chip.

In one embodiment, bosses are arranged on two opposite sides of the ceramic sheet, and the first electrode sheet and the second electrode sheet are respectively arranged on the bosses.

In one embodiment, the first pin and the second pin are made of red copper materials.

In one embodiment, the surfaces of the first and second leads are treated with tin plating

The utility model has the advantages that:

the utility model provides a pair of lightning protection module combines piezo-resistor and discharge tube together through the circuit board, on the one hand can carry out fine cutting restriction to the hourglass and handle, has solved the uncontrollable state of hourglass, makes its use reliability increase, on the other hand can carry out segmentation absorption and discharge to surge ability, has improved the suppression effect to the surge, makes its life effectively prolonged; meanwhile, the structure of the lightning protection module is simplified, so that the structure is simplified and miniaturized, and the cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic overall structure diagram of a lightning protection module according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structural view of a lightning protection module according to an embodiment of the present invention;

fig. 3 is an explosion structure diagram of the lightning protection module according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a circuit board of a lightning protection module according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a discharge tube of a lightning protection module according to an embodiment of the present invention.

Reference numerals: 1. a first pin; 2. a second pin; 3. a voltage dependent resistor; 4. a circuit board; 41. a through hole; 42. soldering lugs; 5. a discharge tube; 51. a tile; 511. a boss; 52. a first electrode sheet; 53. a second electrode sheet; 6. a first tin sheet; 7. a second tin sheet; 8. and a third tin sheet.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 3, an embodiment of the present invention provides a lightning protection module, including: first pin 1 and the second pin 2 of relative setting are equipped with piezo-resistor 3, circuit board 4 and discharge tube 5 between first pin 1 and second pin 2 in proper order, and first pin 1 is close to piezo-resistor 3 and is connected with piezo-resistor 3 electricity, and second pin 2 is close to discharge tube 5 and is connected with circuit board 4 and discharge tube 5 electricity respectively, and circuit board 4 is connected with piezo-resistor 3 electricity, and discharge tube 5 is connected with piezo-resistor 3 electricity.

In this embodiment, discharge tube 5 is used for carrying out the shutoff leakage current to piezo-resistor 3, does not switch on when the electric wire netting is normal, switches on in the twinkling of an eye when detecting the surge, draws low piezo-resistor 3 breakdown area voltage fast, guarantees that piezo-resistor 3 absorbs and releases energy in the energy gathering area of surge, improves lightning protection efficiency.

Piezo-resistor 3 is columniform piezo-resistor 3, and piezo-resistor 3's both ends are equipped with the piezo-resistor silver piece respectively, and the piezo-resistor silver piece is used for realizing that piezo-resistor 3 is connected with the electricity of other parts, and circuit board 4 and discharge tube 5 locate piezo-resistor 3 with one end, set up convenient equipment on the one hand like this, on the other hand can reduce the volume size of lightning protection module relatively.

In the present embodiment, the discharge tube 5 and the varistor 3 are combined to absorb the high and low voltages of the surge in a segmented manner, so as to provide a good protection effect for the device to be protected.

The embodiment of the utility model provides a lightning protection module combines piezo-resistor 3 and discharge tube 5 together through circuit board 4, on the one hand can carry out fine cutting restriction to the leakage current, has solved the uncontrollable state of leakage current, makes its use reliability increase, on the other hand can carry out segmentation absorption and discharge to surge capacity, has improved the suppression effect to the surge, makes its life effectively prolonged; meanwhile, the structure of the lightning protection module is simplified, so that the structure is simplified and miniaturized, and the cost is reduced.

In the present embodiment, as shown in fig. 2 to 4, the circuit board 4 is a circular circuit board, and the circuit board 4 is provided with a through hole 41 for mounting the discharge tube 5 along an axial direction thereof. The discharge tube 5 is partially arranged in the through hole 41 of the circuit board 4, so that the discharge tube 5 is directly contacted with the piezoresistor 3 to realize electric connection, and the installation is simplified; on the other hand, the whole thickness of the lightning protection module can be reduced, so that the volume of the lightning protection module is smaller.

In the present embodiment, as shown in fig. 3 and 4, a soldering lug 42 is disposed on one side of the circuit board 4 close to the second pin 2, and the soldering lug 42 is electrically connected to the second pin 2. Of course, other electronic components, such as resistors, may be mounted on the soldering lug 42 for further increasing the surge-proof effect of the lightning protection module.

In this embodiment, the circuit board 4 is provided with a tin plating layer on a side thereof adjacent to the varistor 3, and the tin plating layer is electrically connected to the varistor 3. The tin coating is used for increasing the contact area of the circuit board 4 and the piezoresistor 3 and ensuring the stability of electric connection between the circuit board and the piezoresistor.

In the present embodiment, as shown in fig. 2 and 3, the first lead 1 is electrically connected to the varistor 3 through the first solder foil 6, and the second lead 2 is electrically connected to the discharge tube 5 through the second solder foil 7. Like this in the production process, with this lightning protection module after high temperature, first tin piece 6 and second tin piece 7 melt to make first pin 1 and second pin 2 firm with piezo-resistor 3, discharge tube 5 link together, guaranteed the stability of its electricity connection, can prevent simultaneously that first pin 1 and second pin 2 from installing when being protected on the product, the condition that piezo-resistor 3 and discharge tube 5 break away from.

In the present embodiment, the discharge tube 5 and the circuit board 4 are electrically connected to the varistor 3 through the third solder foil 8, which simplifies the mounting process and ensures the mounting reliability.

Specifically, in the production process, the first pin 1, the first tin sheet 6, the piezoresistor 3, the third tin sheet 8, the circuit board 4, the discharge tube 5, the second tin sheet 7 and the second pin 2 are sequentially superposed in a manufacturing mold, then the mold is passed through a tin furnace, after high-temperature treatment of the tin furnace, the first tin sheet 6, the second tin sheet 7 and the third tin sheet 8 are melted, after cooling, the first pin 1, the piezoresistor 3, the circuit board 4, the discharge tube 5 and the second pin 2 are firmly adhered together, the overall firmness and the electric connection stability of the lightning protection module are ensured, in addition, the production and installation processes of the lightning protection module only need to stack all parts in sequence, and then the tin furnace is passed, so that the lightning protection module has the advantage of simple assembly process, and the production efficiency is greatly improved.

In the present embodiment, as shown in fig. 3 and 5, the discharge tube 5 includes: a tile 51, and a first electrode pad 52 and a second electrode pad 53 respectively disposed on opposite sides of the tile 51, the first electrode pad 52 for connecting with the third solder foil 8, and the second electrode pad 53 for connecting with the second solder foil 7.

In this embodiment, bosses 511 are provided on opposite sides of the tile 51, and the first electrode sheet 52 and the second electrode sheet 53 are respectively provided on the bosses 511.

In this embodiment, the first pin 1 and the second pin 2 include a pad end and a pin end, the shapes of the first tin sheet 6 and the second tin sheet 7 are matched with the pad end, the end of the soldering sheet 42 is in a ring shape, the surface of the soldering sheet is a sheet surface, the 3 silver sheets of the piezoresistor at the two ends of the piezoresistor 3 are a plane, and the surfaces of the ceramic sheet 51 of the discharge tube 5 and the electrode sheet are both planes, so that a chip mounter or a sucker can conveniently adsorb the soldering sheet, each part of the lightning protection module can be automatically overlapped through automation equipment, the production efficiency of the lightning protection module is ensured, and meanwhile, the surface of each part is a plane, so that the problem of material throwing during adsorption is well solved, the lightning protection module is simplified in structure, and the production cost of the lightning protection module is reduced.

In this embodiment, the first lead 1 and the second lead 2 are made of red copper material. So that the first lead 1 and the second lead 2 have good conductivity. In other embodiments, the first lead 1 and the second lead 2 may be made of other conductive metals, such as steel material.

In the present embodiment, the surfaces of the first lead 1 and the second lead 2 are subjected to a tin-fog plating treatment. The surfaces of the first pin 1 and the second pin 2 are subjected to tin-plating treatment, so that the attractiveness, the weldability and the high temperature resistance of the pins can be improved.

In this embodiment, the voltage dependent resistor 3 is a metal zinc oxide voltage dependent resistor, which has the advantages of high impedance, fast response and accurate voltage limit.

The lightning protection module of the embodiment of the utility model thoroughly solves the uncontrollable state of leakage current due to the cut-off limiting treatment of the leakage current, thus increasing the use reliability; when the lightning protection module is in a large-range fluctuation or surge impact period of a power grid, the current of the lightning protection module is in a cut-off limiting state in a leakage working area, so that the working life of the lightning protection module can be effectively prolonged; the lightning protection module can absorb and discharge surge energy in a segmented manner, so that more energy is absorbed and discharged in the time period of the maximum surge energy, the surge suppression efficiency is improved, and the surge suppression efficiency can be improved by 30% compared with that of a single piezoresistor 3 in the prior art through experiments, so that the lightning protection module has a more remarkable protection effect on protected equipment; each part adopted by the lightning protection module has small volume and simple structure, thus greatly reducing the whole size of the lightning protection module and leading the lightning protection module to be more widely used; the lightning protection module can be used as a small lightning protection device, so that the lightning protection device tends to be developed in a small size.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A lightning protection module, comprising: the LED lamp comprises a first pin and a second pin which are arranged oppositely, wherein a piezoresistor, a circuit board and a discharge tube are sequentially arranged between the first pin and the second pin, the first pin is electrically connected with the piezoresistor, the second pin is respectively electrically connected with the circuit board and the discharge tube, the circuit board is electrically connected with the piezoresistor, and the discharge tube is electrically connected with the piezoresistor.

2. The lightning protection module according to claim 1, wherein the circuit board is a circular ring type circuit board, and the circuit board is provided with a through hole along an axial direction thereof for mounting the discharge tube.

3. The lightning protection module of claim 1, wherein a solder tab is disposed on a side of the circuit board proximate the second pin, the solder tab being electrically connected to the second pin.

4. The lightning protection module of claim 3, wherein the circuit board is provided with a tin plating on a side thereof adjacent to the varistor, the tin plating being electrically connected to the varistor.

5. The lightning protection module of claim 4, wherein the first lead is electrically connected to the varistor via a first solder tab and the second lead is electrically connected to the discharge tube via a second solder tab.

6. The lightning protection module of claim 5, wherein the discharge tube and the circuit board are each electrically connected to the varistor by a third tin foil.

7. The lightning protection module of claim 1, wherein the discharge tube comprises: the electrode plate comprises a ceramic chip, and a first electrode plate and a second electrode plate which are respectively arranged on two opposite sides of the ceramic chip.

8. The lightning protection module of claim 7, wherein bosses are provided on opposite sides of the tile, and the first and second electrode sheets are respectively disposed on the bosses.

9. The lightning protection module according to any one of claims 1 to 8, wherein the first pin and the second pin are each made of a copper material.

10. The lightning protection module of claim 9, wherein the surfaces of the first and second legs are treated with misted tin.