Plasma igniter and electronic detonator comprising same

Abstract

The present invention relates to the technical field of initiating explosive devices. Disclosed are a plasma igniter and an electronic detonator comprising same. The plasma igniter comprises a double-sided insulating substrate; a first metal foil and a second metal foil are provided on a first surface of the double-sided insulating substrate, a first wire connecting structure is provided on the first metal foil, and a second wire connecting structure is provided on the second metal foil; a metal foil bridge is further provided on the first surface of the double-sided insulating substrate; a third metal foil and a fourth metal foil are provided on a second surface of the double-sided insulating substrate, a third wire connecting structure is provided on the third metal foil, the third wire connecting structure is connected to the first wire connecting structure by means of a first conductive structure, and first reinforcement connection structures are connected between the first metal foil and the third metal foil; and a fourth wire connecting structure is provided on the fourth metal foil, the fourth wire connecting structure is connected to the second wire connecting structure by means of a second conductive structure, and second reinforcement connection structures are connected between the third metal foil and the fourth metal foil. The plasma igniter in the present invention is beneficial to improving the firmness of metal foils attached to the double-sided insulating substrate.

Description

Plasma ignition element and electronic detonator containing same Technical Field

[0001] The present invention relates to the technical field of pyrotechnic devices, in particular to a plasma ignition component and an electronic detonator containing the same. Background Art

[0002] At present, electronic detonators are widely used in tunnel excavation, hazard removal blasting, demolition blasting, ore-rock separation, open-pit mine blasting and other occasions. Existing electronic detonators mainly include foot lines, plastic plugs, control modules, ignition bridge wires with ignition powder, basic powder and basic tube shells, etc. Among them, the basic powder is the core charge in existing electronic detonators. The basic powder usually uses dinitrodiazophenol (DDNP) as the explosive, which has high impact friction sensitivity and explodes when exposed to fire. Electronic detonators filled with the above-mentioned explosives have the hidden danger of explosion during daily production, transportation, storage and use in blasting projects.

[0003] Furthermore, the ignition powder in the existing electronic detonator is wrapped on the ignition bridge wire. The ignition powder is easily broken by vibration during the production and transportation process, and the ignition bridge wire is easily detached during the production and transportation process, which causes the electronic detonator to refuse to explode; in addition, during the detonation process of the electronic detonator, the electronic detonator detonated in the early stage will generate strong interference signals and strong vibration waves, which can easily cause mechanical damage to the electronic detonator, causing damage to the ignition powder and the ignition bridge wire, causing the electronic detonator to refuse to explode.

[0004] In order to solve the above technical problems, the prior art provides a plasma ignition electronic detonator, which mainly realizes ignition through a plasma igniter. Specifically, when a high-voltage current passes through a metal foil, the metal foil discharges and quickly melts and vaporizes, and diffuses into the surrounding medium. Then, based on the conductive properties of the plasma formed by the melted and vaporized metal foil, the residual high-voltage energy of the electrodes at both ends of the metal foil forms an ion accelerator, which further accelerates the plasma to form a plasma, and the explosives in the electronic detonator are excited by the plasma.

[0005] Furthermore, the plasma igniter is the core ignition component of a plasma ignition electronic detonator. However, in existing plasma igniters, the metal foil has insufficient adhesion to the substrate, making it easy for the metal foil to detach or peel from the substrate, which can easily cause the metal foil bridge in the plasma igniter to break, causing the electronic detonator to fail to explode. Furthermore, the amount of plasma generated by the metal foil bridge in existing plasma igniters during discharge is limited, resulting in insufficient ignition performance and difficulty in reliably igniting the explosive in the electronic detonator. Therefore, there is an urgent need for a plasma igniter that can improve the firmness of the metal foil's adhesion to the substrate. Technical Solutions

[0006] The object of the present invention is to overcome at least one of the above-mentioned shortcomings of the prior art and provide a plasma ignition component that is conducive to improving the firmness of the metal foil attached to the double-sided insulating substrate; in addition, an electronic detonator is also provided.

[0007] The technical solution of the present invention to solve the above technical problems is as follows:

[0008] According to one aspect of the present application, a plasma ignition component is provided, comprising:

[0009] A double-sided insulating substrate, wherein a first metal foil and a second metal foil are provided on a first surface of the double-sided insulating substrate, the first metal foil and the second metal foil are arranged opposite each other, a gap first is formed between the first metal foil and the second metal foil, a first wire connection structure is provided on the first metal foil, and a second wire connection structure is provided on the second metal foil;

[0010] A metal foil bridge is further provided on the first surface of the double-sided insulating substrate. The metal foil bridge is located in the first gap. One end of the metal foil bridge is connected to the first metal foil, and the other end of the metal foil bridge is connected to the second metal foil. The metal foil bridge is used to discharge outward to generate plasma.

[0011] A metal foil third and a metal foil fourth are provided on the second surface of the double-sided insulating substrate. The metal foil third is arranged opposite to the metal foil fourth, and the metal foil third is arranged with its back to the metal foil first, and the metal foil fourth is arranged with its back to the metal foil second. A gap second is formed between the metal foil third and the metal foil fourth. A wire connection structure third is provided on the metal foil third, and the wire connection structure third is arranged with its back to the wire connection structure first and is connected to the wire connection structure one through the conductive structure one. A reinforcement connection structure one is connected between the metal foil one and the metal foil three. A wire connection structure fourth is provided on the metal foil fourth, and the wire connection structure fourth is arranged with its back to the wire connection structure two and is connected to the wire connection structure two through the conductive structure two. A reinforcement connection structure two is connected between the metal foil three and the metal foil four.

[0012] The beneficial effects of the present invention are as follows: in this embodiment, a reinforcement connection structure 1 is connected between metal foil 1 and metal foil 3, which can improve the firmness of metal foil 3 and metal foil 1 attached to the double-sided insulating substrate through the reinforcement connection structure 1; similarly, a reinforcement connection structure 2 is connected between metal foil 2 and metal foil 4, which can improve the firmness of metal foil 4 and metal foil 2 attached to the double-sided insulating substrate through the reinforcement connection structure 2; thereby, the metal foil is prevented from detaching or peeling off from the double-sided insulating substrate, causing the metal foil bridge to break, and further preventing the metal foil bridge from breaking and causing the electronic detonator to fail to explode. Furthermore, a wire connection structure 3 is provided on metal foil 3, and a wire connection structure 4 is provided on metal foil 4. By using two wires, the wire connection structure 3 and the wire connection structure 4 can be connected to the positive and negative electrodes of the energy storage capacitor respectively, and discharge to the metal foil bridge through the energy storage capacitor, which is conducive to the metal foil bridge discharging outward to cause an electric explosion to generate plasma, and is convenient for ignition using a plasma ignition component.

[0013] In addition, based on the above technical solution, the present invention can also be improved as follows and can also have the following additional technical features.

[0014] According to one embodiment of the present invention, the metal foil bridge comprises:

[0015] a first connecting end connected to the first metal foil, wherein an end of the first connecting end facing the second metal foil extends toward the second metal foil to form a first protruding structure protruding from the first metal foil;

[0016] A second connecting end, facing the first connecting end and connected to the second metal foil, wherein an end of the second connecting end facing the first metal foil extends toward the first metal foil to form a second protruding structure protruding from the second metal foil;

[0017] An explosive bridge wire is connected between the protruding structure 1 and the protruding structure 2, and the explosive bridge wire is used for discharging outward to cause an electric explosion and generate plasma.

[0018] In this embodiment, the protruding structure one protrudes from the metal foil one, and the protruding structure two protrudes from the metal foil two, which is beneficial to improving the firmness of the connection between the metal foil bridge and the metal foil one and the metal foil two, and is beneficial to increasing the amount of plasma generated when the metal foil bridge discharges outward to cause an electric explosion; in addition, the explosive bridge wire is connected between the protruding structure one and the protruding structure two, which is beneficial to improving the firmness of the connection of the explosive bridge wire, and is beneficial to avoiding the breakage of the explosive bridge wire and ensuring the stability of the explosive bridge wire discharging outward to cause an electric explosion and generate plasma.

[0019] According to one embodiment of the present invention, the explosive bridgewire has a bent structure. This increases the length of the explosive bridgewire, thereby increasing the amount of plasma generated when the explosive bridgewire discharges outward, causing an electrical explosion. This also increases the conductivity of the plasma, thereby improving the ignition performance of the plasma ignition element. This facilitates the instantaneous melting and vaporization of the explosive bridgewire to form a high-temperature, high-pressure, high-speed plasma shock wave that excites the high explosive.

[0020] According to one embodiment of the present invention, the explosive bridgewire has a Z-shaped structure. The Z-shaped structure of the explosive bridgewire in this embodiment increases the length of the explosive bridgewire, thereby increasing the amount of plasma generated when the explosive bridgewire discharges outward to cause an electrical explosion, and also increases the conductivity of the plasma, thereby improving the ignition performance of the plasma ignition component, which is conducive to the instantaneous melting and vaporization of the explosive bridgewire to form a high-temperature, high-pressure, high-speed plasma shock wave that excites the high explosive.

[0021] According to one embodiment of the present invention, the first connecting end is strip-shaped and extends along the direction of the first gap, and the second connecting end is strip-shaped and extends along the direction of the first gap. The strip-shaped connecting ends of this embodiment increase the contact area between the metal foil bridge and the first and second metal foils, which helps increase the amount of plasma generated when the metal foil bridge discharges outward, causing an electrical explosion. This helps increase the conductivity of the plasma and improves the ignition performance of the plasma ignition component.

[0022] According to one embodiment of the present invention, a plurality of the first and second reinforcing connection structures are provided. In this embodiment, the provision of multiple first reinforcing connection structures further enhances the secure attachment of the third and first metal foils to the double-sided insulating substrate. Furthermore, the provision of multiple second reinforcing connection structures further enhances the secure attachment of the fourth and second metal foils to the double-sided insulating substrate.

[0023] According to one embodiment of the present invention, a first reinforcement hole structure is provided on the first metal foil, a third reinforcement hole structure is provided on the third metal foil facing away from the first reinforcement hole structure, and a first metallized hole passing through the double-sided insulating substrate is connected between the first reinforcement hole structure and the third reinforcement hole structure to form the first reinforcement connection structure;

[0024] A second reinforcement hole structure is provided on the second metal foil, and a fourth reinforcement hole structure is provided on the fourth metal foil facing away from the second reinforcement hole structure. A second metallized hole passing through the double-sided insulating substrate is connected between the second reinforcement hole structure and the fourth reinforcement hole structure to form the second reinforcement connection structure.

[0025] In this embodiment, the reinforcement hole structure one and the reinforcement hole structure three are connected by a metallized hole one passing through the double-sided insulating substrate to form a reinforcement connection structure one, so that the metal foil one and the metal foil three are conductive, and the conductivity between the metal foil two and the metal foil four is increased. In addition, the metallized hole one also improves the firmness of the metal foil one and the metal foil three attached to the double-sided insulating substrate; further, the reinforcement hole structure two and the reinforcement hole structure four are connected by a metallized hole two passing through the double-sided insulating substrate to form a reinforcement connection structure two, so that the metal foil two and the metal foil four are conductive, and the conductivity between the metal foil two and the metal foil four is increased. In addition, the metallized hole two also improves the firmness of the metal foil two and the metal foil four attached to the double-sided insulating substrate.

[0026] According to one embodiment of the present invention, the first metal foil, the second metal foil, the third metal foil, the fourth metal foil, and the metal foil bridge are all copper-clad foil. In this embodiment, the first metal foil, the second metal foil, the third metal foil, the fourth metal foil, and the metal foil bridge are all copper-clad foil. Copper-clad foil has excellent electrical conductivity. When a high-voltage current passes through the copper-clad foil, the copper-clad foil discharges and rapidly melts and vaporizes, diffusing into the surrounding medium. Based on the conductive properties of the plasma formed by the melted and vaporized copper-clad foil, the residual high-voltage energy at the electrodes at both ends of the copper-clad foil forms an ion accelerator, further accelerating the plasma to form a plasma shock wave, which is conducive to the plasma shock wave reliably exciting the high explosive in the electronic detonator.

[0027] According to one embodiment of the present invention, the metal foil one and the metal foil two are symmetrically arranged, the metal foil three and the metal foil four are symmetrically arranged, the metal foil bridge is connected in the middle position of the metal foil one and the metal foil two, the double-sided insulating substrate is a double-sided metal foil-clad printed circuit board, the metal foil one, the metal foil two and the metal foil bridge are formed by etching on the first side of the double-sided metal foil-clad printed circuit board, and the metal foil three and the metal foil four are formed by etching on the second side of the double-sided metal foil-clad printed circuit board.

[0028] In this embodiment, metal foil one and metal foil two are symmetrically arranged, metal foil three and metal foil four are symmetrically arranged, and the metal foil bridge is connected in the middle position of metal foil one and metal foil two, which is beneficial for the plasma generated by metal foil one and metal foil two to be concentrated in the middle of metal foil one and metal foil two, and is beneficial for improving the concentration of plasma; in addition, metal foil one, metal foil two and the metal foil bridge are formed by etching the first side of the double-sided metal foil printed circuit board, and metal foil three and metal foil four are formed by etching the second side of the double-sided metal foil printed circuit board, which facilitates processing to obtain plasma ignition components.

[0029] According to another aspect of the present application, an electronic detonator is provided, comprising:

[0030] A shell body, wherein an explosive filling cavity is provided in the shell body, and the explosive filling cavity is filled with high explosive;

[0031] A circuit substrate, wherein an energy storage capacitor is provided on the circuit substrate;

[0032] The above-mentioned plasma ignition component is connected to the circuit substrate and faces the explosive filling chamber, and the metal foil bridge is in contact with the secondary explosive filled in the explosive filling chamber. The wire connection structure three is electrically connected to the positive electrode of the energy storage capacitor through a wire, and the wire connection structure four is electrically connected to the negative electrode of the energy storage capacitor through a wire. The metal foil bridge can discharge under the discharge action of the energy storage capacitor to cause an electric explosion, and the generated plasma can excite the secondary explosive filled in the explosive filling chamber.

[0033] The electronic detonator in this embodiment includes the aforementioned plasma ignition element. A reinforcement connection structure 1 is connected between metal foil 1 and metal foil 3, disposed on the plasma ignition element. This reinforcement connection structure 1 can enhance the secure attachment of metal foil 3 and metal foil 1 to the double-sided insulating substrate. Similarly, a reinforcement connection structure 2 is connected between metal foil 2 and metal foil 4, enhancing the secure attachment of metal foil 4 and metal foil 2 to the double-sided insulating substrate. Furthermore, the metal foil bridge discharges under the action of the energy storage capacitor, causing an electrical explosion. The generated plasma can ignite the high explosive in the explosive filling chamber, facilitating reliable ignition of the electronic detonator via the plasma ignition element. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] FIG1 is a schematic structural diagram of a plasma ignition component according to an embodiment of the present invention;

[0036] FIG2 is a top view of the plasma ignition component in FIG1 after being aligned;

[0037] FIG3 is a bottom view of FIG2;

[0038] FIG4 is a schematic structural diagram of a second structure of a metal foil bridge according to an embodiment of the present invention;

[0039] FIG5 is a top view of the plasma ignition component in FIG4 after being aligned.

[0040] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0041] 1. Double-sided insulating substrate, 10. Metal foil one, 11. Metal foil two, 12. Metal foil bridge, 13. Metal foil three, 14. Metal foil four, 15. Metal pad hole one, 16. Metal pad hole two, 17. Metallized hole one, 18. Metallized hole two, 121. Connecting end one, 122. Connecting end two, 123. Exploding bridge wire, 124. Exploding bridge wire two. Modes for Carrying Out the Invention

[0042] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0043] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0045] In one aspect of the present application, a plasma ignition component is provided, as shown in FIG1 to FIG3 , comprising:

[0046] A double-sided insulating substrate 1, wherein a first metal foil 10 and a second metal foil 11 are provided on a first surface of the double-sided insulating substrate 1, wherein the first metal foil 10 and the second metal foil 11 are arranged opposite each other, and a gap 1 is formed between the first metal foil 10 and the second metal foil 11, and a first wire connection structure 1 is provided on the first metal foil 10, and a second wire connection structure 2 is provided on the second metal foil 11;

[0047] A metal foil bridge 12 is further provided on the first surface of the double-sided insulating substrate 1. The metal foil bridge 12 is located in the gap 1. One end of the metal foil bridge 12 is connected to the metal foil 10, and the other end of the metal foil bridge 12 is connected to the metal foil 2 11. The metal foil bridge 12 is used to discharge outward to generate plasma.

[0048] A metal foil three 13 and a metal foil four 14 are provided on the second surface of the double-sided insulating substrate 1. The metal foil three 13 and the metal foil four 14 are arranged opposite each other, and the metal foil three 13 is arranged with its back to the metal foil one 10, and the metal foil four 14 is arranged with its back to the metal foil two 11. A gap two is formed between the metal foil three 13 and the metal foil four 14. A wire connection structure three is provided on the metal foil three 13. The wire connection structure three is arranged with its back to the wire connection structure one and is connected to the wire connection structure one through the conductive structure one. A reinforced connection structure one is connected between the metal foil one 10 and the metal foil three 13; a wire connection structure four is provided on the metal foil four 14. The wire connection structure four is arranged with its back to the wire connection structure two and is connected to the wire connection structure two through the conductive structure two. A reinforced connection structure two is connected between the metal foil three 13 and the metal foil four 14.

[0049] In this embodiment, as shown in Figures 1 to 3, a reinforcement connection structure 1 is connected between the metal foil 1 10 and the metal foil 3 13 in this embodiment, which can improve the firmness of the metal foil 3 13 and the metal foil 1 10 attached to the double-sided insulating substrate 1 through the reinforcement connection structure 1; similarly, a reinforcement connection structure 2 is connected between the metal foil 2 11 and the metal foil 4 14, which can improve the firmness of the metal foil 4 14 and the metal foil 2 11 attached to the double-sided insulating substrate 1 through the reinforcement connection structure 2; thereby, the metal foil is prevented from detaching or peeling off from the double-sided insulating substrate 1, resulting in the breakage of the metal foil bridge 12, and further, the breakage of the metal foil bridge 12 is prevented, causing the electronic detonator to fail to explode; further, the metal foil is reliably attached to the double-sided insulating substrate 1, thereby improving the extrusion force that the metal foil can withstand, and in the process of assembling the plasma ignition component on the metal tube of the electronic detonator, the metal foil is prevented from being squeezed and detached or peeled off from the double-sided insulating substrate 1, and the metal foil is also prevented from detaching or peeling off from the double-sided insulating substrate 1 during the welding process. Furthermore, a wire connection structure three is provided on the metal foil three 13, and a wire connection structure four is provided on the metal foil four 14. The wire connection structure three and the wire connection structure four can be connected to the positive and negative poles of the energy storage capacitor respectively by using two wires, and discharged to the metal foil bridge 12 through the energy storage capacitor, which is conducive to the outward discharge of the metal foil bridge 12 to cause an electric explosion to generate plasma, and facilitates ignition using a plasma ignition component.

[0050] In this embodiment, as shown in Figures 1 to 3, the wire connection structure 1 and the wire connection structure 3 in this embodiment are connection hole structures. The conductive structure 1 in this embodiment is specifically a metallized hole. The metallized hole extends to the wire connection structure 1 and the wire connection structure 3 to form a metal pad hole 15. The metal pad hole 15 is used for welding with the wire to achieve connection with an electrode of the energy storage capacitor.

[0051] Furthermore, as shown in Figures 1 to 3, the wire connection structure 2 and the wire connection structure 4 are connection hole structures. The conductive structure 2 in this embodiment is specifically a metallized hole. The metallized hole extends to the wire connection structure 2 and the wire connection structure 4 to form a metal pad hole 2 16. The metal pad hole 2 16 is used for welding with the wire to achieve connection with the other electrode of the energy storage capacitor. The metal foil 1 10 and the metal foil 2 11 on both sides of the gap 1 in this embodiment constitute the two electrodes of the ion accelerator.

[0052] Furthermore, the energy storage capacitor in this embodiment is specifically a high-voltage energy storage capacitor. The electric energy stored in the high-voltage energy storage capacitor is greater than 0.3 joules. The power supply voltage stored by the high-voltage energy storage capacitor is greater than 40V and less than 150V. The storage capacity and voltage range provided by the high-voltage energy storage capacitor can also be adjusted as needed.

[0053] Furthermore, as shown in Figures 1 to 3, the double-sided insulating substrate 1 in this embodiment has a disc-shaped structure, but the double-sided insulating substrate 1 can also be configured in other structures. The metal foil 1 10, metal foil 2 11, metal foil 3 13, and metal foil 4 14 in this embodiment all have approximately semicircular structures, but the metal foil 1 10, metal foil 2 11, metal foil 3 13, and metal foil 4 14 can also be configured in other shapes. Furthermore, the gaps 1 and 2 in this embodiment can have various sizes and can be appropriately designed based on the desired concentration of plasma acceleration, which will not be further described here.

[0054] In one embodiment of the present invention, as shown in FIG1 and FIG2 , the metal foil bridge 12 includes:

[0055] The first connecting end 121 is connected to the first metal foil 10 , and one end of the first connecting end 121 facing the second metal foil 11 extends toward the second metal foil 11 to form a protruding structure 1 protruding from the first metal foil 10 ;

[0056] The second connecting end 122 is connected to the second metal foil 11 opposite to the first connecting end 121. One end of the second connecting end 122 facing the first metal foil 10 extends toward the first metal foil 10 to form a second protruding structure protruding from the second metal foil 11.

[0057] The explosive bridge wire 123 is connected between the protruding structure 1 and the protruding structure 2. The explosive bridge wire 123 is used for discharging outward to cause an electric explosion and generate plasma.

[0058] In this embodiment, as shown in Figures 1 and 2, the protruding structure one protrudes from the metal foil one 10, and the protruding structure two protrudes from the metal foil two 11, which is beneficial to improving the firmness of the connection between the metal foil bridge 12 and the metal foil one 10 and the metal foil two 11, and is beneficial to increasing the amount of plasma generated when the metal foil bridge 12 discharges outward to cause an electric explosion; in addition, the explosive bridge wire 123 is connected between the protruding structure one and the protruding structure two, which is beneficial to improving the firmness of the connection of the explosive bridge wire 123, and is beneficial to avoiding the breakage of the explosive bridge wire 123 and ensuring the stability of the explosive bridge wire 123 discharging outward to cause an electric explosion and generate plasma.

[0059] In this embodiment, as shown in Figures 1 and 2, the width, length and copper coating thickness of the explosive bridge wire 123 can have multiple combinations. By adjusting the width, length and copper coating thickness of the explosive bridge wire 123, an explosive bridge wire 123 with a resistance value matching the stored energy of the energy storage capacitor can be obtained, so that a voltage can be provided to the matching explosive bridge wire 123 through the energy storage capacitor matching the stored energy, so that the explosive bridge wire 123 is instantaneously melted and vaporized to form a high-temperature, high-pressure, high-speed plasma shock wave.

[0060] In one embodiment of the present invention, as shown in Figures 1 and 2, the explosive bridgewire 123 has a bent structure. In this embodiment, the bent structure of the explosive bridgewire 123 increases its length, thereby increasing the amount of plasma generated when the explosive bridgewire 123 discharges outward, causing an electrical explosion. This also increases the conductivity of the plasma, thereby improving the ignition performance of the plasma ignition element. This facilitates the instantaneous melting and vaporization of the explosive bridgewire 123, forming a high-temperature, high-pressure, high-speed plasma shock wave that ignites the high explosive. Furthermore, the explosive bridgewire 123 can be bent in a variety of ways, as long as it is beneficial to increase the length of the explosive bridgewire 123.

[0061] In one embodiment of the present invention, as shown in Figures 1 and 2, the explosive bridge wire 123 has a Z-shaped structure. In this embodiment, the Z-shaped structure of the explosive bridge wire 123 increases its length, thereby increasing the amount of plasma generated when the explosive bridge wire 123 discharges outward to cause an electrical explosion. This also increases the conductivity of the plasma, thereby improving the ignition performance of the plasma ignition component. This facilitates the instantaneous melting and vaporization of the explosive bridge wire 123 to form a high-temperature, high-pressure, high-speed plasma shock wave that excites the high explosive.

[0062] Furthermore, as shown in Figures 4 to 5, the explosive bridge wire 2 124 in this embodiment serves as a deformed structure of the explosive bridge wire 123. When the width of the gap 1 formed between the metal foil 10 and the metal foil 2 11 remains unchanged, the length of the portion of the explosive bridge wire 2 124 close to the connection end 121 and the connection end 2 122 is relatively shortened, while the middle portion of the explosive bridge wire 2 124 is lengthened, which is conducive to further increasing the length of the explosive bridge wire 2 124.

[0063] In one embodiment of the present invention, as shown in FIG1 and FIG2 , the first connection end 121 is strip-shaped and extends along the extension direction of the first gap, and the second connection end 122 is strip-shaped and extends along the extension direction of the first gap.

[0064] In this embodiment, as shown in Figures 1 and 2, the connection end 121 and the connection end 2 122 are strip-shaped, which increases the contact area between the metal foil bridge 12 and the metal foil 1 10 and the metal foil 2 11, which is beneficial to increase the amount of plasma generated when the metal foil bridge 12 discharges outward to cause an electric explosion, thereby increasing the conductivity of the plasma and improving the ignition performance of the plasma ignition component.

[0065] In one embodiment of the present invention, as shown in Figures 1 to 3, multiple reinforcement connection structures 1 and 2 are provided. In this embodiment, the provision of multiple reinforcement connection structures 1 further enhances the secure attachment of metal foil 3 13 and metal foil 1 10 to double-sided insulating substrate 1. Furthermore, the provision of multiple reinforcement connection structures 2 further enhances the secure attachment of metal foil 4 14 and metal foil 2 11 to double-sided insulating substrate 1.

[0066] Furthermore, as shown in Figures 1 to 3, the reinforcement connection structure 1 and the reinforcement connection structure 2 in this embodiment are respectively provided with two, and the reinforcement connection structure 1 and the reinforcement connection structure 2 are both metallized hole structures; in addition, the reinforcement connection structure 1 and the reinforcement connection structure 2 in this embodiment can also be set to other reinforcement connection structures that can achieve reinforced connection, and the number of reinforcement connection structures 1 and the reinforcement connection structure 2 can also be set to three, four, etc.

[0067] In one embodiment of the present invention, as shown in Figures 1 to 3, a metal foil 10 is provided with a reinforcement hole structure 1, and a metal foil 3 13 is provided with a reinforcement hole structure 3 opposite to the reinforcement hole structure 1. A metalized hole 17 passing through the double-sided insulating substrate 1 is connected between the reinforcement hole structure 1 and the reinforcement hole structure 3 to form a reinforcement connection structure 1;

[0068] A second reinforcement hole structure is provided on the second metal foil 11, and a fourth reinforcement hole structure is provided on the fourth metal foil 14 facing away from the second reinforcement hole structure. A second metallized hole 18 passing through the double-sided insulating substrate 1 is connected between the second reinforcement hole structure and the fourth reinforcement hole structure to form a second reinforcement connection structure.

[0069] In this embodiment, as shown in Figures 1 to 3, a metallized hole 17 passing through the double-sided insulating substrate 1 is connected between the reinforcement hole structure 1 and the reinforcement hole structure 3 to form a reinforcement connection structure 1, so that the metal foil 1 10 and the metal foil 3 13 are conductive, and the conductivity between the metal foil 2 11 and the metal foil 4 14 is increased. In addition, the metallized hole 17 also improves the firmness of the metal foil 10 and the metal foil 3 13 attached to the double-sided insulating substrate 1; further, a metallized hole 2 18 passing through the double-sided insulating substrate 1 is connected between the reinforcement hole structure 2 and the reinforcement hole structure 4 to form a reinforcement connection structure 2, so that the metal foil 2 11 and the metal foil 4 14 are conductive, and the conductivity between the metal foil 2 11 and the metal foil 4 14 is increased. In addition, the metallized hole 2 18 also improves the firmness of the metal foil 2 11 and the metal foil 4 14 attached to the double-sided insulating substrate 1.

[0070] In this embodiment, as shown in Figures 1 to 3, there are two reinforcement hole structures one and two reinforcement hole structures three in this embodiment, and the metallized hole one 17 extends to the reinforcement hole structure one and the reinforcement hole structure three to form the reinforcement connection structure one; further, there are two reinforcement hole structures two and two reinforcement hole structures four, and the metallized hole two 18 extends to the reinforcement hole structure two and the reinforcement hole structure four to form the reinforcement connection structure two.

[0071] Furthermore, as shown in FIG. 1 to FIG. 3 , the metallized hole 17 and the metallized hole 2 18 in this embodiment are specifically electroplated copper through holes. The metallized hole 17 and the metallized hole 2 18 can also be electroplated through hole structures formed by electroplating other metal materials.

[0072] Furthermore, as shown in Figures 1 to 3, the two reinforcement hole structures 1 and the two reinforcement hole structures 3 in this embodiment are respectively located on both sides of the metal pad hole 15 along the extension direction of the gap 1, and the two reinforcement hole structures 2 and the two reinforcement hole structures 4 are respectively located on both sides of the metal pad hole 2 16 along the extension direction of the gap 2.

[0073] In one embodiment of the present invention, as shown in Figures 1 to 3, metal foil 10, metal foil 2 11, metal foil 3 13, metal foil 4 14, and metal foil bridge 12 are all copper-clad foil. In this embodiment, metal foil 10, metal foil 2 11, metal foil 3 13, metal foil 4 14, and metal foil bridge 12 are all copper-clad foil. Copper-clad foil has excellent electrical conductivity. When a high-voltage current passes through the copper-clad foil, the copper-clad foil discharges and rapidly melts and vaporizes, diffusing into the surrounding medium. Based on the conductive properties of the plasma generated by the melted and vaporized copper-clad foil, the residual high-voltage energy at the electrodes at both ends of the copper-clad foil forms an ion accelerator, further accelerating the plasma to form a plasma shock wave, which facilitates the reliable excitation of the high explosive in the electronic detonator by the plasma shock wave.

[0074] Furthermore, the metal foil 1 10 , the metal foil 2 11 , the metal foil 3 13 , the metal foil 4 14 and the metal foil bridge 12 in this embodiment may also be made of other conductive metal materials that can form high-temperature, high-pressure, high-speed plasma shock waves through discharge.

[0075] In one embodiment of the present invention, as shown in Figures 1 to 3, metal foil one 10 and metal foil two 11 are symmetrically arranged, metal foil three 13 and metal foil four 14 are symmetrically arranged, and a metal foil bridge 12 is connected in the middle position of metal foil one 10 and metal foil two 11. The double-sided insulating substrate 1 is a double-sided metal foil-clad printed circuit board. Metal foil one 10, metal foil two 11 and metal foil bridge 12 are formed by etching on the first side of the double-sided metal foil-clad printed circuit board, and metal foil three 13 and metal foil four 14 are formed by etching on the second side of the double-sided metal foil-clad printed circuit board.

[0076] In this embodiment, as shown in Figures 1 to 3, metal foil one 10 and metal foil two 11 are symmetrically arranged, metal foil three 13 and metal foil four 14 are symmetrically arranged, and the metal foil bridge 12 is connected in the middle position of metal foil one 10 and metal foil two 11, which is beneficial for the plasma generated by metal foil one 10 and metal foil two 11 to be concentrated in the middle of metal foil one 10 and metal foil two 11, which is beneficial for improving the concentration of plasma; in addition, metal foil one 10, metal foil two 11 and metal foil bridge 12 are formed by etching on the first side of the double-sided metal foil printed circuit board, and metal foil three 13 and metal foil four 14 are formed by etching on the second side of the double-sided metal foil printed circuit board, which is convenient for processing to obtain plasma ignition components.

[0077] Furthermore, the double-sided metal foil-clad printed circuit board in this embodiment is specifically a double-sided copper-clad printed circuit board. The thickness of the copper layer formed by the copper cladding on the double-sided copper-clad printed circuit board can be designed or selected according to needs. The width of the explosive bridge wire 123 formed by etching the double-sided copper-clad printed circuit board is on the order of microns. The process of etching the double-sided copper-clad printed circuit board to form the specific explosive bridge wire 123 can refer to the existing technology in this field and will not be repeated here.

[0078] In another aspect of the present application, an electronic detonator is provided, comprising:

[0079] The shell body is provided with an explosive filling cavity therein, and the explosive filling cavity is filled with high explosive;

[0080] A circuit substrate, wherein an energy storage capacitor is provided on the circuit substrate;

[0081] The above-mentioned plasma ignition component is connected to the circuit substrate and faces the explosive filling chamber, and the metal foil bridge 12 is in contact with the high explosive filled in the explosive filling chamber. The wire connection structure three is electrically connected to the positive electrode of the energy storage capacitor through a wire, and the wire connection structure four is electrically connected to the negative electrode of the energy storage capacitor through a wire. The metal foil bridge 12 can discharge under the discharge action of the energy storage capacitor to cause an electric explosion, and the generated plasma can excite the high explosive filled in the explosive filling chamber.

[0082] In this embodiment, the electronic detonator includes the aforementioned plasma ignition element. A reinforcement connection structure 1 is connected between the metal foil 10 and the metal foil 3 13 disposed on the plasma ignition element. This reinforcement connection structure 1 can improve the firmness of the metal foil 3 13 and the metal foil 10 attached to the double-sided insulating substrate 1. Similarly, a reinforcement connection structure 2 is connected between the metal foil 2 11 and the metal foil 4 14. This reinforcement connection structure 2 can improve the firmness of the metal foil 4 14 and the metal foil 2 11 attached to the double-sided insulating substrate 1. Furthermore, the metal foil bridge 12 discharges under the discharge action of the energy storage capacitor, causing an electrical explosion. The generated plasma can excite the high explosive filled in the explosive filling chamber to form a strong detonation wave output, facilitating reliable excitation of the electronic detonator by the plasma ignition element. This eliminates the need for explosives to be filled in the electronic detonator, thus avoiding the potential explosion risk of the electronic detonator during daily production, transportation, storage, and use in blasting projects due to explosives being filled in the electronic detonator.

[0083] In this embodiment, the metal foil bridge 12 is tightly attached to the secondary explosive filled in the explosive filling chamber. The secondary explosive filled in the explosive filling chamber is RDX or PETN, although other suitable explosives may also be used as the secondary explosive. Furthermore, in this embodiment, the capacity and discharge characteristics of the energy storage capacitor can be appropriately designed or selected based on existing techniques in the art and will not be further described here.

[0084] Furthermore, the electronic detonator, circuit substrate and energy storage capacitor in this embodiment are not shown in the figure. The connection method of the energy storage capacitor to the circuit substrate, the control module provided in the electronic detonator, and other components and the control module for controlling the energy storage capacitor can all be referred to the relevant existing technology in the field and will not be described in detail here.

[0085] In addition, in addition to the technical solutions disclosed in this embodiment, for the energy storage capacitor, circuit substrate, double-sided copper-clad printed circuit board, other components of the electronic detonator and their working principles in the present invention, reference can be made to conventional technical solutions in this technical field. However, these conventional technical solutions are not the focus of the present invention and will not be described in detail herein.

[0086] In the present invention, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; and "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0087] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0088] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0089] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A plasma ignition component, characterized in that: include: A double-sided insulating substrate, wherein a first metal foil and a second metal foil are provided on a first surface of the double-sided insulating substrate, the first metal foil is arranged opposite to the second metal foil, a gap first is formed between the first metal foil and the second metal foil, a first wire connection structure is provided on the first metal foil, and a second wire connection structure is provided on the second metal foil; A metal foil bridge is also provided on the first surface of the double-sided insulating substrate, the metal foil bridge is located in the gap 1, one end of the metal foil bridge is connected to the metal foil 1, and the other end of the metal foil bridge is connected to the metal foil 2, and the metal foil bridge is used to discharge outward to generate plasma; A metal foil three and a metal foil four are provided on the second surface of the double-sided insulating substrate, the metal foil three is arranged opposite to the metal foil four, and the metal foil three is arranged with its back to the metal foil one, and the metal foil four is arranged with its back to the metal foil two, a gap two is formed between the metal foil three and the metal foil four, a wire connection structure three is provided on the metal foil three, the wire connection structure three is arranged with its back to the wire connection structure one and is connected to the wire connection structure one through a conductive structure one, and a reinforcement connection structure one is connected between the metal foil one and the metal foil three; a wire connection structure four is provided on the metal foil four, the wire connection structure four is arranged with its back to the wire connection structure two and is connected to the wire connection structure two through a conductive structure two, and a reinforcement connection structure two is connected between the metal foil three and the metal foil four.

2. The plasma ignition element according to claim 1, characterized in that: The metal foil bridge comprises: A connecting end 1 connected to the metal foil 1, wherein an end of the connecting end 1 facing the metal foil 2 extends toward the metal foil 2 to form a protruding structure 1 protruding from the metal foil 1; A second connection end, facing the first connection end and connected to the second metal foil, an end of the second connection end facing the first metal foil extending toward the first metal foil to form a second protruding structure protruding from the second metal foil; An explosive bridge wire is connected between the protruding structure one and the protruding structure two, and the explosive bridge wire is used for discharging outward to cause an electric explosion and generate plasma.

3. The plasma ignition element according to claim 2, characterized in that: The explosive bridge wire is in a bent structure.

4. The plasma ignition element according to claim 3, characterized in that: The explosive bridge wire has a Z-shaped structure.

5. The plasma ignition element according to claim 2, characterized in that: The first connection end is in a strip shape and extends along the extension direction of the first gap, and the second connection end is in a strip shape and extends along the extension direction of the first gap.

6. The plasma ignition element according to any one of claims 1 to 5, characterized in that: The first reinforcement connection structure and the second reinforcement connection structure are each provided in plurality.

7. The plasma ignition element according to any one of claims 1 to 5, characterized in that: The first metal foil is provided with a reinforcement hole structure 1, the third metal foil is provided with a reinforcement hole structure 3 facing away from the first reinforcement hole structure, and the first reinforcement hole structure and the third reinforcement hole structure are connected with a metallized hole 1 passing through the double-sided insulating substrate to form the first reinforcement connection structure; A second reinforcement hole structure is provided on the second metal foil, and a fourth reinforcement hole structure is provided on the fourth metal foil facing away from the second reinforcement hole structure. A second metallized hole passing through the double-sided insulating substrate is connected between the second reinforcement hole structure and the fourth reinforcement hole structure to form the second reinforcement connection structure.

8. The plasma ignition element according to any one of claims 1 to 5, characterized in that: The metal foil one, the metal foil two, the metal foil three, the metal foil four and the metal foil bridge are all copper-clad foils.

9. The plasma ignition element according to any one of claims 1 to 5, characterized in that: The metal foil one and the metal foil two are symmetrically arranged, the metal foil three and the metal foil four are symmetrically arranged, the metal foil bridge is connected at the middle position of the metal foil one and the metal foil two, the double-sided insulating substrate is a double-sided metal foil printed circuit board, the metal foil one, the metal foil two and the metal foil bridge are formed by etching on the first side of the double-sided metal foil printed circuit board, and the metal foil three and the metal foil four are formed by etching on the second side of the double-sided metal foil printed circuit board.

10. An electronic detonator, characterized in that: include: A shell body, wherein an explosive filling cavity is provided in the shell body, and the explosive filling cavity is filled with high explosive; A circuit substrate, wherein an energy storage capacitor is provided on the circuit substrate; The plasma ignition component described in any one of claims 1 to 9 is connected to the circuit substrate and faces the explosive filling cavity, and the metal foil bridge is in contact with the high explosive filled in the explosive filling cavity, the wire connection structure three is electrically connected to the positive electrode of the energy storage capacitor through a wire, and the wire connection structure four is electrically connected to the negative electrode of the energy storage capacitor through a wire, and the metal foil bridge can discharge under the discharge action of the energy storage capacitor to cause an electric explosion and the generated plasma can excite the high explosive filled in the explosive filling cavity.

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