A lightning protection module

Abstract

The application relates to the technical field of surge protectors, and provides a lightning protection module, which comprises oppositely arranged first and second pins, a pressure-sensitive resistor, a circuit board and a discharge tube arranged in sequence between the first and second pins, the first pin is electrically connected with the pressure-sensitive resistor, the second pin is electrically connected with the circuit board and the discharge tube respectively, the circuit board is electrically connected with the pressure-sensitive resistor, and the discharge tube is electrically connected with the pressure-sensitive resistor. The pressure-sensitive resistor and the discharge tube are combined together through the circuit board, on one hand, the leakage current can be well cut off and limited, the uncontrollable state of the leakage current is solved, the use reliability is increased, on the other hand, the surge capacity can be segmented absorbed and discharged, the suppression effect on the surge is improved, the service life is effectively prolonged, meanwhile, the structure of the lightning protection module is simplified, the structure is simplified and miniaturized, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of surge protectors, in particular to a lightning protection module. BACKGROUND

[0002] The causes of surges (transient pulses) usually include lightning, poor grounding, inductive load switching, power failure troubleshooting, and ESD (Electro-Static Disscharge), etc. The result may cause data loss or damage, or even equipment damage, among which the damage caused by lightning surges is the most destructive.

[0003] The existing method for preventing lightning surge damage usually uses a surge protection device at the front end of the power adapter of the electrical equipment. The surge protection device usually adopts a shell, and components such as a pressure-sensitive resistor or a discharge tube arranged in the shell. Not only is the volume large, but also the structure is complex, resulting in a high cost. Moreover, when a discharge tube or a pressure-sensitive resistor is used alone, there are problems such as large leakage, easy cracking and fire, and current continuation. SUMMARY

[0004] The present application aims to provide a lightning protection module, which aims to solve the technical problems of complex structure and high cost of the surge protection device in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is: a lightning protection module, comprising: a first pin and a second pin arranged oppositely, a pressure-sensitive resistor, a circuit board and a discharge tube arranged between the first pin and the second pin, the first pin being electrically connected with the pressure-sensitive resistor, the second pin being electrically connected with the circuit board and the discharge tube respectively, the circuit board being electrically connected with the pressure-sensitive resistor, and the discharge tube being electrically connected with the pressure-sensitive resistor.

[0006] In an embodiment, the circuit board is a circular ring type circuit board, and a through hole for mounting the discharge tube is arranged on the circuit board along the axial direction thereof.

[0007] In an embodiment, a soldering pad is arranged on the side of the circuit board close to the second pin, and the soldering pad is electrically connected with the second pin.

[0008] In an embodiment, a tin plating layer is arranged on the side of the circuit board close to the pressure-sensitive resistor, and the tin plating layer is electrically connected with the pressure-sensitive resistor.

[0009] In an embodiment, the first pin is electrically connected with the pressure-sensitive resistor through a first tin sheet, and the second pin is electrically connected with the discharge tube through a second tin sheet.

[0010] In an embodiment, the discharge tube and the circuit board are both electrically connected with the pressure-sensitive resistor through a third tin sheet.

[0011] In one embodiment, the discharge tube comprises a porcelain sheet, and a first electrode sheet and a second electrode sheet respectively arranged on opposite sides of the porcelain sheet.

[0012] In one embodiment, the opposite sides of the porcelain sheet are respectively provided with a first boss and a second boss, and the first electrode sheet and the second electrode sheet are arranged on the first boss and the second boss respectively.

[0013] In one embodiment, the first pin and the second pin are both made of red copper material.

[0014] In one embodiment, the surfaces of the first pin and the second pin are plated with mist tin.

[0015] The present application has the following advantages:

[0016] The lightning protection module provided by the present application combines the voltage-dependent resistor and the discharge tube through the circuit board, which can cut off and limit the leakage current, solve the uncontrollable state of the leakage current, increase the use reliability, absorb and discharge the surge capacity in sections, improve the suppression effect on the surge, effectively prolong the service life, simplify the structure, and make the structure simple and small, thereby reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The overall structure schematic diagram of the lightning protection module provided by the present application is shown in the figure.

[0019] Figure 2 The cross-sectional structure schematic diagram of the lightning protection module provided by the present application is shown in the figure.

[0020] Figure 3 The explosion structure schematic diagram of the lightning protection module provided by the present application is shown in the figure.

[0021] Figure 4 The structure schematic diagram of the circuit board of the lightning protection module provided by the present application is shown in the figure.

[0022] Figure 5 The structure schematic diagram of the discharge tube of the lightning protection module provided by the present application is shown in the figure.

[0023] Reference numerals: 1, first pin; 2, second pin; 3, piezoresistor; 4, circuit board; 41, through hole; 42, soldering pad; 5, discharge tube; 51, porcelain piece; 511, boss; 52, first electrode piece; 53, second electrode piece; 6, first tin piece; 7, second tin piece; 8, third tin piece. DETAILED DESCRIPTION

[0024] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings, in which the same or similar components are denoted by the same or similar reference numerals throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0025] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0027] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Reference should be made to Figures 1 to 3As shown, the embodiment of the present application provides a lightning protection module, which comprises: a first pin 1 and a second pin 2 arranged oppositely, a pressure sensitive resistor 3, a circuit board 4 and a discharge tube 5 arranged in sequence between the first pin 1 and the second pin 2, the first pin 1 is close to the pressure sensitive resistor 3 and electrically connected with the pressure sensitive resistor 3, the second pin 2 is close to the discharge tube 5 and electrically connected with the circuit board 4 and the discharge tube 5 respectively, the circuit board 4 is electrically connected with the pressure sensitive resistor 3, and the discharge tube 5 is electrically connected with the pressure sensitive resistor 3.

[0029] In the embodiment, the discharge tube 5 is used to cut off the leakage current of the pressure sensitive resistor 3, and is not conductive when the power grid is normal, and is conductive momentarily when the power surge is detected, so as to quickly pull down the breakdown voltage of the pressure sensitive resistor 3, to ensure that the pressure sensitive resistor 3 absorbs and discharges energy in the energy accumulation area of the power surge, and to improve the lightning protection efficiency.

[0030] The pressure sensitive resistor 3 is a cylindrical pressure sensitive resistor 3, and pressure sensitive resistor silver sheets are arranged at both ends of the pressure sensitive resistor 3, the pressure sensitive resistor silver sheets are used to realize electrical connection of the pressure sensitive resistor 3 and other components, and the circuit board 4 and the discharge tube 5 are arranged at the same end of the pressure sensitive resistor 3, so that the structure is convenient for assembly, and the size of the lightning protection module is relatively reduced.

[0031] In the embodiment, the discharge tube 5 and the pressure sensitive resistor 3 can segmentally absorb the high and low voltage of the power surge after being combined, so as to have a good protection effect on the equipment to be protected.

[0032] The lightning protection module provided by the embodiment of the present application combines the pressure sensitive resistor 3 and the discharge tube 5 through the circuit board 4, which can cut off and limit the leakage current, solve the uncontrollable state of the leakage current, increase the use reliability, segmentally absorb and discharge the power surge capacity, improve the suppression effect on the power surge, effectively prolong the service life, simplify the structure of the lightning protection module, and make the structure simple and small, thereby reducing the cost.

[0033] In the embodiment, as shown in Figures 2 to 4 The circuit board 4 is a circular ring type circuit board, and a through hole 41 for mounting the discharge tube 5 is arranged on the circuit board 4 along the axial direction. By mounting the discharge tube 5 in the through hole 41 of the circuit board 4, the discharge tube 5 is directly in contact with the pressure sensitive resistor 3 to realize electrical connection, and the installation is simplified, and the overall thickness of the lightning protection module is reduced, so that the size of the lightning protection module is smaller.

[0034] In the embodiment, as shown in Figure 3 and Figure 4 A soldering sheet 42 is arranged on the side of the circuit board 4 close to the second pin 2, and the soldering sheet 42 is electrically connected with the second pin 2. Of course, other electronic components such as resistors can also be mounted on the soldering sheet 42, to further increase the effect of the lightning protection module on the power surge.

[0035] In the embodiment, the circuit board 4 is provided with a tinned layer on the side close to the varistor 3, and the tinned layer is electrically connected with the varistor 3. The tinned layer is used to increase the contact area of the circuit board 4 and the varistor 3, and ensure the stability of the electrical connection between the two.

[0036] In the embodiment, as shown in Figure 2 and Figure 3 , the first pin 1 is electrically connected with the varistor 3 through the first tin sheet 6, and the second pin 2 is electrically connected with the discharge tube 5 through the second tin sheet 7. In this way, during the production process, the first tin sheet 6 and the second tin sheet 7 are melted after the lightning protection module is subjected to high temperature, so that the first pin 1 and the second pin 2 are firmly connected with the varistor 3 and the discharge tube 5, which ensures the stability of the electrical connection and prevents the varistor 3 and the discharge tube 5 from being separated when the first pin 1 and the second pin 2 are installed on the protected product.

[0037] In the embodiment, the discharge tube 5 and the circuit board 4 are electrically connected with the varistor 3 through the third tin sheet 8, which simplifies the installation steps and ensures the firmness of the installation.

[0038] Specifically, during the production process, the first pin 1, the first tin sheet 6, the varistor 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 stacked in a mold, and then the mold is passed through a tin furnace. After high-temperature treatment in the tin furnace, the first tin sheet 6, the second tin sheet 7 and the third tin sheet 8 are melted, and after cooling, the first pin 1, the varistor 3, the circuit board 4, the discharge tube 5 and the second pin 2 are firmly adhered together, which ensures the firmness of the lightning protection module as a whole and the stability of the electrical connection. Moreover, the production and installation process of the lightning protection module only needs to sequentially stack the parts and then pass through the tin furnace, so that the lightning protection module has the advantage of simple assembly process, which greatly improves the production efficiency.

[0039] In the embodiment, as shown in Figure 3 and Figure 5 , the discharge tube 5 includes a porcelain sheet 51, and a first electrode sheet 52 and a second electrode sheet 53 respectively arranged on opposite sides of the porcelain sheet 51. The first electrode sheet 52 is used to connect with the third tin sheet 8, and the second electrode sheet 53 is used to connect with the second tin sheet 7.

[0040] In the embodiment, the opposite sides of the porcelain sheet 51 are respectively provided with bosses 511, and the first electrode sheet 52 and the second electrode sheet 53 are arranged on the bosses 511.

[0041] In the embodiment, the first pin 1 and the second pin 2 include pad ends and pin ends, the first tin sheet 6 and the second tin sheet 7 are shaped to be adapted to the pad ends, the surfaces of the tin sheets 42 are sheet surfaces, the surfaces of the varistor silver sheets at the two ends of the varistor 3 are flat surfaces, and the surfaces of the porcelain sheets 51 of the discharge tube 5 and the electrode sheets are flat surfaces, so that the paster or the suction cup can be conveniently adsorbed, the parts of the lightning protection module can be automatically stacked by the automatic equipment, the production efficiency is ensured, the surfaces of the parts are flat surfaces, the problem of material throwing during adsorption is well solved, the structure of the lightning protection module is simplified, and the production cost is reduced.

[0042] In the embodiment, the first pin 1 and the second pin 2 are made of red copper. In this way, the first pin 1 and the second pin 2 have good electrical conductivity. In other embodiments, the first pin 1 and the second pin 2 can be made of other conductive metals such as steel.

[0043] In the embodiment, the surfaces of the first pin 1 and the second pin 2 are plated with mist tin. The surfaces of the first pin 1 and the second pin 2 are plated with mist tin, so that the appearance, solderability and high-temperature resistance of the pins are improved.

[0044] In the embodiment, the varistor 3 is a metal zinc oxide varistor, which has the advantages of high impedance, fast response and accurate voltage limit.

[0045] The lightning protection module of the embodiment has the advantages that the leakage current is cut off and limited, the uncontrollable state of the leakage current is completely solved, the use reliability is improved, the current in the leakage working area of the lightning protection module is in a cut-off and limiting state during wide fluctuation of the power grid or surge impact, so that the working life of the lightning protection module is effectively prolonged, the lightning protection module can segmentally absorb and discharge the surge energy, more energy is absorbed and discharged in the time period with the maximum surge energy, so that the surge suppression efficiency is improved, the surge suppression efficiency is improved by 30% compared with the single varistor 3 in the prior art, the protection effect of the lightning protection module on the protected equipment is more significant, the sizes of the parts of the lightning protection module are small and the structure is simple, so that the overall size of the lightning protection module is greatly reduced, the lightning protection module is more widely used, and the lightning protection module itself can be used as a small lightning protection device, so that the lightning protection device tends to be small.

[0046] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lightning protection module, characterized in that, The application relates to a voltage stabilizer, which comprises a first pin and a second pin arranged oppositely, a pressure-sensitive resistor, a circuit board and a discharge tube arranged in sequence between the first pin and the second pin, wherein the first pin is electrically connected with the pressure-sensitive resistor, the second pin is electrically connected with the circuit board and the discharge tube respectively, the circuit board is electrically connected with the pressure-sensitive resistor, and the discharge tube is electrically connected with the pressure-sensitive resistor; the circuit board is a circular ring type circuit board, a through hole for mounting the discharge tube is arranged on the circuit board along the axial direction, a part of the discharge tube is mounted in the through hole of the circuit board, a soldering sheet is arranged on the side of the circuit board close to the second pin, and the soldering sheet is electrically connected with the second pin; the first pin is electrically connected with the pressure-sensitive resistor through a first tin sheet, the second pin is electrically connected with the discharge tube through a second tin sheet, and the discharge tube and the circuit board are electrically connected with the pressure-sensitive resistor through a third tin sheet; a tinned layer is arranged on the side of the circuit board close to the pressure-sensitive resistor, and the tinned layer is electrically connected with the pressure-sensitive resistor. In the production process, the first pin, the first tin sheet, the pressure-sensitive resistor, the third tin sheet, the circuit board, the discharge tube, the second tin sheet and the second pin are stacked in a production mold in sequence, the mold is passed through a tin furnace, the first tin sheet, the second tin sheet and the third tin sheet are melted through high-temperature treatment of the tin furnace, and after cooling, the first pin, the pressure-sensitive resistor, the circuit board, the discharge tube and the second pin can be firmly adhered together. The discharge tube comprises a porcelain sheet and first and second electrode sheets arranged on opposite sides of the porcelain sheet respectively.

2. The lightning protection module of claim 1, wherein, The opposite sides of the porcelain sheet are provided with bosses, and the first and second electrode sheets are arranged on the bosses respectively.

3. The lightning protection module of claim 2, wherein, The first pin and the second pin are made of red copper material.

4. The lightning protection module according to any one of claims 1 to 3, characterized in that The surfaces of the first pin and the second pin are treated by mist tin plating.

5. The lightning protection module of claim 4, wherein, ​

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