A surge protector that facilitates secondary welding of surge protection modules

Abstract

The present application discloses a surge protector which is convenient for secondary welding of a surge protection module. The surge protection module comprises a protective shell, a varistor and a tripping mechanism. The protective shell comprises a shell, a partition and a cover plate. The partition separates an installation cavity for installing the tripping mechanism in the shell. The cover plate is arranged opposite to the partition and is detachably configured on the shell to cover the installation cavity. The tripping mechanism comprises an insulating isolating member and two tripping members. Both the tripping members are rotatably mounted on the partition. The two tripping members are electrically connected to the varistor and the wiring terminal respectively. The insulating isolating member is movably configured on the partition by an elastic member. The insulating isolating member has a welding position and an initial position. A weld for welding with a permeable alloy is formed between the two tripping members. The weld is arranged opposite to the cover plate. The insulating isolating member abuts against the weld by compressing the elastic member to be located in the initial position. Compared with the prior art, this scheme can facilitate secondary welding between the two tripping members.

Description

Technical Field

[0001] The present application relates to the field of surge protectors, and in particular to a surge protector that facilitates secondary welding of a surge protection module. Background Art

[0002] For lightning protection of low-voltage lines in industries such as construction, electrical, railway, telecommunications, petrochemical, photovoltaic, and wind power, switch-type or voltage-limiting-type surge protectors (or lightning protection devices) are widely used. From power transmission and distribution lines, substations to computer rooms, from communication rooms to equipment interiors, surge protectors play an indispensable role in lightning protection, electromagnetic interference protection, switch shock protection, and other surge current protection, ensuring the normal operation of various electrical equipment in the power network.

[0003] A surge protector is an electronic device used to suppress abnormal overvoltage and instantaneous overcurrent in a circuit, thereby preventing damage to electrical equipment. When an abnormal spike pulse or surge current appears in a circuit, causing the temperature of certain components in the circuit to rise, performance to deteriorate, or even be damaged, the surge protector reduces the current flowing through the lightning protection chip through the high resistance, thereby limiting the short-circuit current.

[0004] Surge protectors include varistors (MOVs), which can be used to transfer excess voltage. After long-term use, the varistor will age and easily heat up, which may cause safety problems during use. In order to prevent the varistor from overheating, a trip mechanism is usually set in the surge protection module. When the surge protector works under high voltage and high current conditions, the internal components will instantly generate high heat, which will be transferred to the trip mechanism and melt the low-temperature solder in the trip mechanism. Then the trip mechanism will separate from the varistor under the tension of the spring.

[0005] During the manufacturing process of the surge protector, the welding part of the tripping mechanism may have quality problems; or, during use, the low-temperature solder between the tripping mechanisms may melt due to high temperature. Traditional surge protectors require the entire frame with varistor and tripping mechanism to be disassembled from the shell before welding, which makes the secondary welding of the surge protector extremely cumbersome. Summary of the invention

[0006] In order to solve the above-mentioned problem, the present application provides a surge protector that facilitates secondary welding of a surge protection module, which can facilitate secondary welding between two release parts.

[0007] The present application provides a surge protector that facilitates secondary welding of a surge protection module, wherein the surge protection module includes a protective shell, a varistor, and a tripping mechanism;

[0008] The protective shell includes a shell, a partition and a cover plate, wherein the partition is fixed to the shell and separates the shell into an installation cavity for installing the tripping mechanism, and the cover plate is arranged opposite to the partition and is detachably configured on the shell to cover the installation cavity;

[0009] The tripping mechanism comprises an insulating spacer and two tripping members, both of which are rotatably mounted on the partition, and the two tripping members are electrically connected to the varistor and the wiring terminal respectively, and the insulating spacer is movably arranged on the partition by an elastic member, and the insulating spacer has a welding position and an initial position;

[0010] A weld for welding with the tolerant alloy is formed between the two release members, the weld is arranged opposite to the cover plate, and the insulating spacer abuts against the weld by compressing the elastic member to be located at the initial position;

[0011] The secondary welding step of the surge protection module includes:

[0012] S100, separating the cover from the housing to expose the two release members and the insulating isolation member;

[0013] S200, restricting the insulating spacer to a welding position;

[0014] S300, rotating the two release parts until a weld is formed between the release parts;

[0015] S400, melting the soluble alloy to the weld to weld and fix the two release parts;

[0016] S500, moving the insulating spacer to an initial position;

[0017] S600: fix the cover to the housing, and complete the secondary welding of the surge protection module.

[0018] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0019] Optionally, when the release member is in the welding position, a weld is formed between the two release members;

[0020] A damping structure is provided between the partition plate and the release member, and the damping structure can increase the damping of the release member when it is in the welding position.

[0021] Optionally, the partition is provided with a slide groove, and the release member is provided with a slider matched with the slide groove;

[0022] The damping structure includes a damping member arranged on the inner wall of the slide groove.

[0023] Optionally, the damping member is a rubber member, and the damping member can be interference fit with the sliding block.

[0024] Optionally, along the length of the slide slot, the length of the damping member is substantially the same as the length of the sliding block.

[0025] Optionally, the tripping mechanism further comprises a limiting member fixed to the partition, and the insulating spacer abuts against the limiting member when in the welding position, so as to limit the movement of the insulating spacer.

[0026] Optionally, the rotation axes of the two release members are respectively located on both sides of the insulating isolation member, and the angle between the length direction of the release member at the welding position and the movement path of the insulating isolation member is approximately 30 degrees to 70 degrees.

[0027] Optionally, the insulating spacer is movable along a first direction between a welding position, an initial position and a separation position;

[0028] When the insulating isolating member is in the separated position, the insulating isolating member is located between the two tripping members, thereby preventing an arc from being generated between the two tripping members;

[0029] The rotation axis of the release member is arranged perpendicular to the first direction.

[0030] Optionally, there are two limiting members, and a guide groove for guiding the insulating isolation member is formed between the two limiting members.

[0031] Optionally, the partition further separates the shell into a placement cavity for installing the varistor, and the placement cavity and the installation cavity are respectively located on two sides of the partition;

[0032] The housing further comprises a viewing window for observing the position of the insulating spacer.

[0033] The present application provides a surge protector and an assembly method that facilitates secondary welding of a surge protection module, and can achieve an efficient arc extinguishing effect.

[0034] Convenient for secondary welding: By designing a removable cover and insulating spacers, when secondary welding of the tripping mechanism is required, the welds between the tripping parts can be directly accessed without disassembling the entire surge protection module, which simplifies the welding process and improves maintenance efficiency.

[0035] Cost savings: Since the tripping mechanism can be re-welded, the surge protection module can be repaired and reused when welding quality problems occur, avoiding the replacement of the entire module and thus saving costs.

[0036] Reduce maintenance difficulty: The simplified structural design and easily accessible welding positions reduce the operating difficulty for maintenance personnel and reduce maintenance time and labor intensity.

[0037] Efficient arc extinguishing: The design of the insulating isolator can isolate the two tripping parts when the tripping mechanism is actuated, effectively avoiding the generation of arcs and improving the safety and reliability of the surge protector.

[0038] Compact structure: The shell is divided into a placement cavity and an installation cavity by a partition, which reduces the mutual influence between the varistor and the tripping mechanism and makes the structure of the surge protector more compact.

[0039] Easy to observe: The viewing window on the shell allows easy observation of the position of the insulating isolation piece, making it easy to check and confirm the working status of the surge protector.

[0040] Damping structure design: The damping structure set between the partition and the release part increases the damping of the release part when it is in the welding position, which helps the stability of the welding process.

[0041] Limiting piece design: The limiting piece provided in the tripping mechanism can limit the movement of the insulating spacer and ensure the stability of the insulating spacer in the welding position.

[0042] In summary, the surge protector design provided in this application not only improves the convenience of maintenance and operation, but also enhances the safety and reliability of the equipment, while also reducing maintenance costs, and has great practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the structure of a surge protector according to an embodiment of the present application;

[0044] Figure 2 for Figure 1 A schematic diagram of the structure of the surge protector from another perspective;

[0045] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the surge protector;

[0046] Figure 4 for Figure 1 A schematic diagram of a surge protector with some structures omitted;

[0047] Figure 5 for Figure 1 A cross-sectional view of a surge protection module;

[0048] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part A;

[0049] Figure 7 It is a structural schematic diagram showing that the insulating spacer moves to a separation position;

[0050] Figure 8 It is a structural schematic diagram of the insulating spacer moving to the welding position;

[0051] Fig. 9 for Figure 1 A cross-sectional view of a surge protection module;

[0052] Fig.10 This is the control diagram of the surge protector.

[0053] The reference numerals in the figures are described as follows:

[0054] 100. Surge protection module;

[0055] 10. Protective shell; 11. Shell; 12. Partition plate; 121. Slide groove; 122. Rotating shaft; 123. Stopper; 124. Bump; 13. Cover plate; 14. Installation cavity; 15. Placement cavity; 16. End cover; 17. Visual window;

[0056] 20. Varistor;

[0057] 30. Tripping mechanism; 31. Tripping member; 32. Fusible alloy; 33. Insulating spacer; 34. Elastic member;

[0058] 200, base; 201, installation area; 202, first wiring terminal; 203, second wiring terminal; 204, control module; 205, detection module. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0060] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0062] like Figures 1 to 10 As shown, the present application provides a surge protector that facilitates secondary welding of a surge protection module 100. The surge protection module 100 includes a protective shell 10, a varistor 20, and a tripping mechanism 30. The protective shell 10 includes a shell 11, a partition 12, and a cover plate 13. The partition 12 is fixed to the shell 11 and separates the shell 11 into an installation cavity 14 for installing the tripping mechanism 30. The cover plate 13 is arranged opposite to the partition 12 and is detachably configured on the shell 11 to cover the installation cavity 14. The tripping mechanism 30 It includes an insulating spacer 33 and two release members 31. The two release members 31 are rotatably installed on the partition 12. The two release members 31 are electrically connected to the varistor 20 and the terminal block respectively. The insulating spacer 33 is movably arranged on the partition 12 by an elastic member 34. The insulating spacer 33 has a welding position and an initial position. A weld for welding with soluble alloy is formed between the two release members 31. The weld is arranged opposite to the cover plate 13. The insulating spacer 33 is abutted against the weld by compressing the elastic member 34 to be located in the initial position.

[0063] During the manufacturing process of the surge protector, the welding part of the tripping mechanism 30 may have quality problems; or, when in use, the low-temperature solder between the tripping mechanism 30 may melt due to high temperature; when encountering the above problems, the tripping mechanism 30 can be made to work again by secondary welding, so that the surge module can be reused, thereby saving costs and reducing maintenance difficulties. Among them, secondary welding is not the second welding in the strict sense; secondary welding can be understood as: all welding after the first welding is secondary welding.

[0064] Under high voltage and high current conditions, the internal components of the surge protector will instantly generate very high heat, which is transferred to the tripping mechanism 30 and melts the fusible alloy 32; the insulating isolator 33 moves to the separation position driven by the elastic member 34 to separate the two tripping members 31, and the insulating isolator 33 is located between the two tripping members 31. The insulating isolator 33 can isolate the two tripping members 31, thereby avoiding the arc between the two tripping members 31 and effectively extinguishing the arc. The setting of the insulating isolator 33 does not require the gap between the two tripping members 31 when they are separated, which can make the tripping mechanism 30 require a smaller space for movement, which is conducive to the compact structure of the surge protector; the fusible alloy 32 can drip on the insulating isolator 33 after melting, and the insulating isolator 33 can also avoid the problem of the fusible alloy 32 dripping after melting. Among them, the fusible alloy 32 can be low-temperature solder.

[0065] The secondary welding steps of the surge protection module 100 include:

[0066] S100, separating the cover from the housing 11, so that the two release members 31 and the insulating spacer 33 are exposed;

[0067] S200, restricting the insulating spacer 33 to a welding position;

[0068] S300, rotating the two release members 31 until a weld is formed between the release members 31;

[0069] S400, melting the soluble alloy to the welding seam to weld and fix the two release parts 31;

[0070] S500, moving the insulating spacer 33 to an initial position;

[0071] S600 , fixing the cover to the housing 11 , completing the secondary welding of the surge protection module 100 .

[0072] When welding between the two release parts 31, first, the cover is separated from the shell 11 to expose the two release parts 31 and the insulating isolation part 33; the operator moves the insulating isolation part 33 by hand to move the insulating isolation part 33 to the welding position; the operator moves the release parts 31 by hand until a weld is formed between the release parts 31; the soluble alloy is melted to the weld to weld and fix the two release parts 31; the operator moves the insulating isolation part 33 by hand, and the insulating isolation part 33 abuts against the weld to be located in the initial position; the cover is fixed to the shell 11, and the secondary welding of the surge protection module 100 is completed.

[0073] The weld is arranged opposite to the cover plate 13, so that when the cover plate 13 is separated from the housing 11, the weld can be exposed, so that it is convenient for the operator to perform welding operations on the weld. The two release members 31 can rotate. When the two release members 31 are welded, there is no need to apply additional force to the two release members 31, and there is no need to bend the two release members 31. It is only necessary to move the two release members 31. During the welding process, by restricting the insulating spacer 33 in the welding position, it is possible to prevent the insulating spacer 33 from interfering with the welding process.

[0074] In this embodiment, if Figures 1 to 5 and Fig. 9 As shown, there is no strict restriction on the structure of the protective shell 10; the structure of the protective shell 10 is set according to actual use. The protective shell 10 has a thickness direction in space; the thickness direction of the protective shell 10 is set perpendicular to the movement path of the insulating isolation member 33.

[0075] In this embodiment, if Figures 1 to 5 and Fig. 9 As shown, the partition 12 also separates the housing 11 into a placement cavity 15 for installing the varistor 20, and the placement cavity 15 and the installation cavity 14 are respectively located on both sides of the partition 12. The partition 12 is located in the housing 11 to separate the space in the housing 11 into the placement cavity 15 and the installation cavity 14 arranged along the thickness direction of the protective shell 10; through the arrangement of the partition 12, the varistor 20 and the tripping mechanism 30 can be separated to reduce the mutual influence between the varistor 20 and the tripping mechanism 30.

[0076] In this embodiment, if Figures 1 to 5 and Fig. 9 As shown, along the thickness direction of the protective shell 10, the installation cavity 14 is openly arranged on one side of the shell 11, and the cover plate 13 is detachably installed on the shell 11 by screws to close the open side of the installation cavity 14. In addition, the cover plate 13 is a flat plate structure. Along the thickness direction of the protective shell 10, the placement groove is openly arranged on the side of the shell 11 facing away from the cover plate 13; the protective shell 10 also includes an end cover 16, and the end cover 16 and the cover plate 13 are fixed to the shell 11 by screws and the like, and the open side of the placement groove is sealed to be able to enclose the varistor 20 in the placement cavity 15. When the end cover 16 is separated from the main shell, the placement cavity 15 can be exposed to facilitate operations such as replacement of the varistor 20.

[0077] In this embodiment, if Figures 5 to 9As shown, the insulating spacer 33 can move along the first direction between the welding position, the initial position and the separation position; the rotation axis of the release member 31 is arranged perpendicular to the first direction; when the insulating spacer 33 is in the separation position, the insulating spacer 33 is located between the two release members 31, thereby preventing the generation of an arc between the two release members 31. When the fusible alloy 32 between the two release members 31 melts, the insulating spacer 33 moves to the separation position under the drive of the elastic member 34 to separate the two release members 31, and the insulating spacer 33 is located between the two release members 31, thereby preventing the generation of an arc between the two release members 31.

[0078] In this embodiment, if Figures 5 to 9 As shown, the insulating spacer 33 is roughly a plate-like structure; the insulating spacer 33 has a thickness direction, a width direction and a length direction in space; the width direction and the length direction are perpendicular to each other; the thickness direction of the insulating spacer 33 is perpendicular to the movement path of the insulating spacer 33; the length direction of the insulating spacer 33 is parallel to the movement path of the insulating spacer 33, and the width direction of the insulating spacer 33 is parallel to the thickness direction of the protective shell 10. The elastic member 34 is a spring. In order to make the insulating spacer 33 effectively avoid the arc between the two tripping members 31; refer to one of the embodiments, as Figures 5 to 9 As shown, the insulating separator is respectively fitted with the inner walls of the partition plate 12 and the cover plate 13 on both sides along the thickness direction of the protective shell 10.

[0079] In this embodiment, if Figure 5 As shown, the structure of the release member 31 is not strictly limited; for example, the release member 31 has a length direction in space. The partition 12 has two rotating shafts 122, and the release member 31 has a rotating hole that cooperates with the corresponding rotating shafts 122. The rotation axes of the two release members 31 are respectively located on both sides of the insulating isolation member 33, and the angle between the length direction of the release member 31 in the welding position and the movement path of the insulating isolation member 33 is approximately 30 degrees to 70 degrees, so that the insulating isolation member 33 can drive the two release members 31 to separate, and avoid the problem of the insulating isolation member 33 getting stuck when driving the two release members 31 to separate. When the insulating isolation member 33 is in the initial position, the insulating isolation member 33 is located between the rotation positions of the two release members 31; so that the insulating isolation member 33 can drive the two release members 31 to separate.

[0080] In this embodiment, if Figures 5 to 8As shown, when the release member 31 is in the welding position, the gap between the two release members 31 forms a weld; after the two release members 31 are welded, part of the gap between the two release members 31 is a matching groove, and the end of the edge spacer can be located in the matching groove; the setting of the matching groove can facilitate the insulation spacer 33 to be restricted in the initial position to prevent the insulation spacer 33 from moving. The matching groove is located at the end of the two release members 31 when they are fixed by welding with the fusible alloy 32, and the opening of the matching groove faces the insulation spacer 33.

[0081] In this embodiment, if Figures 5 to 8 As shown, the partition 12 is provided with a slide groove 121, and the release member 31 is provided with a slider matched with the slide groove 121; the slide groove 121 can guide the movement of the release member 31. The extension path of the slide groove 121 is arc-shaped.

[0082] In this embodiment, if Figures 5 to 8 As shown, a damping structure is provided between the partition 12 and the release member 31, and the damping structure can increase the damping of the release member 31 when it is in the welding position; when the release member 31 is welded, the two release members 31 can be pre-fixed without external force, thereby facilitating the welding of the two release members 31.

[0083] In this embodiment, if Figures 5 to 8 As shown, the damping structure includes a damping member arranged on the inner wall of the slide slot 121; the damping member may be a protruding portion of the side wall of the slide slot 121, and the protruding portion is interference fit with the slider; of course, in other embodiments, the damping member may also be a rubber member, and the damping member may be interference fit with the slider. Along the length of the slide slot 121, the length of the damping member is substantially the same as the length of the slider, so that the slider can quickly detach from the damping member, so as to reduce the influence of the damping member on the movement of the release member 31.

[0084] In this embodiment, if Figures 5 to 9 As shown, the tripping mechanism 30 also includes a stopper 123 fixed to the partition 12, and the insulating spacer 33 abuts against the stopper 123 when in the welding position, so as to limit the movement of the insulating spacer 33. The stopper 123 is a protrusion 124 installed on the inner wall of the partition 12, and avoids the movement path of the insulating spacer 33; when the insulating spacer 33 moves to the stopper 123, the end of the insulating spacer 33 swings so that the end of the insulating spacer 33 can abut against the stopper 123, so as to limit the insulating spacer 33 in the welding position. When the operator manually moves the insulating spacer 33 to the welding position, he then applies force in the thickness direction of the insulating spacer 33, so that the end of the insulating spacer 33 swings until the end of the insulating spacer 33 is stuck at the stopper 123. There are two limit members 123 , and a guide groove for guiding the insulating spacer 33 is formed between the two limit members 123 . The guide groove can limit the moving path of the insulating spacer 33 .

[0085] In this embodiment, if Figures 5 to 9 As shown, the partition 12 is also fixed with a protrusion 124, which can limit the insulating spacer 33 in the separated position. The protrusion 124 is located in the movement path of the insulating spacer 33. When the insulating spacer 33 moves to the protrusion 124, the protrusion 124 can limit the continuous movement of the insulating spacer 33. The insulating spacer 33 can abut against the protrusion 124 to limit the insulating spacer 33 in the separated position.

[0086] In this embodiment, if Figure 4 As shown, the housing also includes a viewing window 17 for observing the position of the insulating spacer 33. The protective shell 10 also has a light-transmitting cover that can cover the viewing window 17 to form a sealed space in the protective shell 10 to prevent liquid or dust from entering the protective shell 10 through the viewing window 17.

[0087] In this embodiment, if Figures 1 to 4 As shown, the surge protector further includes a base 200, and the protective shell 10 is detachably mounted on the base 200. The base 200 has an installation area 201, and the protective shell 10 can be snapped into the installation area 201 to assemble the protective shell 10 on the base 200. The snap connection between the protective shell 10 and the base 200 can facilitate the assembly of the surge protector.

[0088] In this embodiment, if Figures 1 to 4 As shown, the surge protector is provided with a first terminal 202 and a second terminal 203; the varistor 20 is connected to the first terminal 202; and the release member 31 is connected to the second terminal 203. The first terminal 202 and the second terminal 203 are both mounted on the base 200, the first terminal 202 is electrically connected to the varistor 20 through a conductive member such as a wire, and the second terminal 203 is electrically connected to the release member 31 through a conductive member such as a wire. The first terminal 202 and the second terminal 203 are located on the same side of the base 200.

[0089] In this embodiment, if Fig.10As shown, the surge protector also includes a control module 204 and a detection module 205; the detection module 205 is connected to the control module 204 by electrical signals, and the detection module 205 can detect the position of the insulating spacer 33, and send the position signal of the insulating spacer 33 to the control module 204, and the control module 204 outputs the state of the tripping member 31 according to the position signal of the insulating spacer 33. When the surge protector fails, it is necessary to check whether the varistor 20 is at fault or the tripping mechanism 30 is at fault. Since the varistor 20 and the tripping mechanism 30 are at different positions in the housing, if both are to be checked, the required procedures are complicated; and by judging whether the insulating spacer 33 is at the initial position or the separation position, a preliminary understanding of whether the tripping mechanism 30 is at fault can be obtained, so that the surge protector can be repaired faster.

[0090] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0091] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A surge protector that facilitates secondary welding of a surge protection module, the surge protection module comprising a protective shell, a varistor and a tripping mechanism; characterized in that: The protective shell includes a shell, a partition and a cover plate, wherein the partition is fixed to the shell and separates the shell into an installation cavity for installing the tripping mechanism, and the cover plate is arranged opposite to the partition and is detachably configured on the shell to cover the installation cavity; The tripping mechanism comprises an insulating spacer and two tripping members, both of which are rotatably mounted on the partition, and the two tripping members are electrically connected to the varistor and the wiring terminal respectively, and the insulating spacer is movably arranged on the partition by an elastic member, and the insulating spacer has a welding position and an initial position; A weld for welding with the tolerant alloy is formed between the two release members, the weld is arranged opposite to the cover plate, and the insulating spacer abuts against the weld by compressing the elastic member to be located at the initial position; The secondary welding step of the surge protection module includes: S100, separating the cover from the housing to expose the two release members and the insulating isolation member; S200, restricting the insulating spacer to a welding position; S300, rotating the two release parts until a weld is formed between the release parts; S400, melting the soluble alloy to the weld to weld and fix the two release parts; S500, moving the insulating spacer to an initial position; S600: fix the cover to the housing, and complete the secondary welding of the surge protection module.

2. A surge protector that facilitates secondary welding of a surge protection module according to claim 1, characterized in that: When the release member is in the welding position, a weld is formed between the two release members; A damping structure is provided between the partition plate and the release member, and the damping structure can increase the damping of the release member when it is in the welding position.

3. A surge protector that facilitates secondary welding of a surge protection module according to claim 2, characterized in that: The partition is provided with a slide groove, and the release member is provided with a slider matched with the slide groove; The damping structure includes a damping member arranged on the inner wall of the slide groove.

4. A surge protector that facilitates secondary welding of a surge protection module according to claim 3, characterized in that: The damping member is a rubber member, and the damping member can be interference-fitted with the sliding block.

5. A surge protector that facilitates secondary welding of a surge protection module according to claim 4, characterized in that: Along the length of the slide slot, the length of the damping member is substantially the same as the length of the sliding block.

6. A surge protector that facilitates secondary welding of a surge protection module according to claim 1, characterized in that: The tripping mechanism further comprises a limiting member fixed to the partition plate, and the insulating spacer abuts against the limiting member when in the welding position, so as to limit the movement of the insulating spacer.

7. A surge protector that facilitates secondary welding of a surge protection module according to claim 1, characterized in that: The rotation axes of the two release members are respectively located on both sides of the insulating isolation member, and the angle between the length direction of the release member at the welding position and the movement path of the insulating isolation member is approximately 30 degrees to 70 degrees.

8. A surge protector that facilitates secondary welding of a surge protection module according to claim 1, characterized in that: The insulating spacer is movable along a first direction between a welding position, an initial position and a separation position; When the insulating isolating member is in the separated position, the insulating isolating member is located between the two tripping members, thereby preventing an arc from being generated between the two tripping members; The rotation axis of the release member is arranged perpendicular to the first direction.

9. A surge protector that facilitates secondary welding of a surge protection module according to claim 6, characterized in that: The number of the limiting members is two, and a guide groove for guiding the insulating isolation member is formed between the two limiting members.

10. A surge protector that facilitates secondary welding of a surge protection module according to claim 1, characterized in that: The partition also separates the housing into a placement cavity for installing the varistor, and the placement cavity and the installation cavity are respectively located on two sides of the partition; The housing further comprises a viewing window for observing the position of the insulating spacer.

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