Electrode, electrode assembly, multi-core electrode plate and forming process

Abstract

The present invention discloses an electrode, an electrode assembly, a multi-core electrode plate and a forming process. The electrode comprises an electrode block and an embedded conductor. A plurality of electrodes are nested in sequence from the inside out to form an electrode assembly, and the electrode assembly is assembled with a shell to form a multi-core electrode plate. The shell on the multi-core electrode plate is assembled with the electrode after being processed into parts in one piece.

Description

Technical Field

[0001] The present invention belongs to the technical field of connectors, and in particular relates to an electrode, an electrode assembly, a multi-core electrode plate and a molding process. Background Art

[0002] Well logging, also known as geophysical logging, is a method of measuring geophysical parameters by using the geophysical properties of rock formations, such as electrochemical properties, electrical conductivity, acoustic properties, and radioactivity. It is one of the applied geophysical methods. Among them, oil well logging technology often extends electrode plates into the well. At least one pair of electrodes is set on the electrode plate. One of the electrodes in each pair of electrodes is used to transmit an electrical signal. After passing through the oil layer / water layer, the electrical signal is received by the other electrode. When the electrical signal passes through the oil layer and the water layer, different attenuations will occur. Therefore, the water layer and the oil layer can be quickly and intuitively judged by the change of the electrical signal received by the other electrode.

[0003] Prior art 1 discloses the process and structure of buried injection molding of contacts, and the electrode block is fixed by gluing. The electrode collects potential signals, and the voltage difference between the two ends of the electrode is required to be highly accurate, and the arc coaxiality of the electrode is also required to be high. In the prior art, the electrode is made of materials with high conductivity, which will sacrifice the wear resistance and pressure bearing properties of the electrode. This is not conducive to the use of deep-sea environments or drilling and logging environments where marine mud and drilling mud are worn and eroded. Moreover, this common method of fixing the electrode by gluing is also prone to causing the electrode block to fall off under the wear and erosion of marine mud and drilling mud.

[0004] Existing technology:

[0005] Chinese patent document 1, publication number is CN111509435A. Summary of the invention

[0006] The present invention aims at the problems of the prior art and provides an electrode, an electrode assembly, a multi-core electrode plate and a forming process. The electrode includes an electrode block and an embedded conductor. Multiple electrodes are sequentially nested from inside to outside to form an electrode assembly, and the electrode assembly is assembled with a shell to form a multi-core electrode plate. The shell on the multi-core electrode plate is assembled with the electrode after being processed into parts in one piece. The specific technical scheme is as follows:

[0007] One of the objects of the present invention is to provide an electrode, comprising:

[0008] An electrode block, wherein the electrode block has a length extension direction, the electrode block has a conductive groove arranged on the surface of the electrode block or a conductive channel arranged in the electrode block, and the conductive groove or the conductive channel at least has a mounting portion arranged along the length extension direction of the electrode block;

[0009] A conductor, at least a portion of which is located in the mounting portion and electrically connected to the electrode block, and the conductivity of the conductor is higher than that of the electrode block.

[0010] As a preferred embodiment of the above technical solution, the voltage difference between the two ends of the electrode along the length extension direction is less than 0.5mV; and / or the electrode block is a wear-resistant and pressure-resistant metal; and / or the electrode block is stainless steel or a high-temperature nickel-based alloy, and the conductor is copper.

[0011] The electrodes are usually arranged on the surface of the tubular structure of the equipment and extend along the length of the equipment. The electrodes are configured as a two-in-one structure of an electrode block and a conductor. On the one hand, the external electrode block can improve the overall wear resistance and pressure resistance of the electrode. On the other hand, the built-in conductor can ensure that the overall voltage difference of the electrode is less than 0.5mV, which meets the use requirements.

[0012] A second object of the present invention is to provide an electrode assembly, comprising the above-mentioned electrode, wherein the electrode block comprises a strip or a ring, and the electrodes are arranged in sequence and spaced apart to form an electrode assembly.

[0013] As a preferred embodiment of the above technical solution, the electrode block includes strips and rings, all the electrodes are nested from the inside to the outside, and the strip-shaped electrode block is arranged in the center. Usually, the electrode assembly is provided with four electrodes, the innermost is a strip-shaped electrode, and three rectangular rings are arranged from the inside to the outside, together forming a group of electrode assemblies.

[0014] A third object of the present invention is to provide a multi-core electrode plate, comprising:

[0015] A shell, wherein the middle of the shell has a hollow portion;

[0016] and the electrode assembly described above, wherein the electrode assembly is arranged in the hollow portion at intervals, and gaps are formed between the electrodes and between the electrodes and the shell;

[0017] Pins, the pins are arranged in multiple groups and are electrically connected to each electrode one by one, the other end of the pins is electrically connected to a connector, and the connector is fixed to the housing;

[0018] A filling body is filled in the gap, the shell and the electrode assembly are fixedly connected via the filling body, and the pin is encapsulated in the filling body.

[0019] As a preferred embodiment of the above technical solution, the electrode block only has a conductive groove arranged on the surface, and the conductor is interference-pressed in the conductive groove.

[0020] As a preferred embodiment of the above technical solution, a crimping groove connected to the conductive groove is provided on the electrode, the plug pin has an insulating section and a conductive section, the outside of the insulating section has an insulating coating layer extending from the connector to the conductive section, and the conductive section is crimped in the crimping groove.

[0021] As a preferred embodiment of the above technical solution, the conductive segment has an enlarged portion accommodated in the conductive groove.

[0022] As a preferred embodiment of the above technical solution, a filling groove is provided on the side wall of the electrode and the shell facing the gap, and a part of the filling body is fixedly accommodated in the filling groove.

[0023] As a preferred embodiment of the above technical solution, taking a cross section perpendicular to the length extension direction of the electrode block, the shell and the electrode assembly are fan-shaped, and the outer arc surfaces of the shell and the electrode assembly are on the same arc surface, and the inner arc surfaces of the electrodes are on the same arc surface.

[0024] As a preferred embodiment of the above technical solution, the radius of the inner arc surface of the electrode is greater than the radius of the inner arc surface of the shell.

[0025] As a preferred embodiment of the above technical solution, each electrode other than the innermost electrode in the electrode assembly is provided with a wire passing hole, and the number of the wire passing holes on each electrode is the ordinal number of the electrode from the inside to the outside in the electrode assembly minus one, and the shell is provided with wire passing holes equal in number to the electrodes, the wire passing holes accommodate the insulating sections of the pins, and the wire passing holes extend along the length direction of the electrode block.

[0026] As a preferred embodiment of the above technical solution, a connecting hole is provided on the shell.

[0027] The third object of the present invention is to provide a forming process for a multi-core electrode plate, the forming process comprising the following steps:

[0028] Forming a blank, in which the electrode assembly and the shell are integrated, and each electrode has at least two injection molding positioning convex keys;

[0029] The wire holes, crimping grooves and conductive grooves on the electrodes are punched and processed as a whole in the original state;

[0030] Cut each electrode from the original blank;

[0031] Press the conductor into the conductive slot, and press the pin through hole into the crimping slot;

[0032] Using the injection molding positioning convex key as the positioning mark, the assembled housing and electrode assembly are transferred into the injection mold for injection molding;

[0033] By removing the injection-molded positioning convex keys on the electrodes, a multi-core electrode plate can be obtained.

[0034] The beneficial effects of the present invention are as follows: the multi-core electrode plate of the present invention is obtained based on one-piece processing and forming, which can ensure that the thickness of all electrode blocks is uniform, and at the same time can reduce the use of raw materials, and based on the one-piece processing technology, the coaxiality of the via hole and the crimping hole is guaranteed, which is easy to assemble between the pin and the electrode block, and the arc surface of all electrodes and the metal shell after the overall assembly is unified. The single electrode under this structural design adopts a two-in-one structure. On the one hand, the wear resistance and pressure resistance of the entire electrode can be improved through the external electrode block. On the other hand, the built-in conductor can ensure that the voltage difference of the entire electrode is less than 0.5mV, which meets the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the front structure of a multi-core electrode plate;

[0036] Figure 2 for Figure 1 Sectional view of AA in the middle;

[0037] Figure 3 is a schematic diagram of the assembly relationship between the housing and the electrode assembly;

[0038] Figure 4 is a schematic diagram of the back structure of the first electrode;

[0039] Figure 5 is a schematic diagram of the back structure of the second electrode;

[0040] Figure 6 is a schematic diagram of the back structure of the third electrode;

[0041] Figure 7 is a schematic diagram of the back structure of the fourth electrode;

[0042] Figure 8 is a schematic diagram of the electrical connection structure between the electrode assembly and the housing;

[0043] Fig. 9 for Figure 8 A partial enlarged view of point B in the middle;

[0044] Fig.10 This is a schematic diagram of the position status of the injection molding positioning convex key on the front side of the multi-core electrode plate. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0046] Figure 1Shown in the figure is a schematic diagram of the front structure of the multi-core electrode plate in this embodiment. In this embodiment, the front and the back are relative orientation concepts, and the multi-core electrode plate is installed on the tubular side wall of the detection instrument as a status indication. The front side of the multi-core electrode plate is exposed to the external environment to be detected, and the back side of the multi-core electrode plate is attached to the detection instrument.

[0047] Figure 1 In the embodiment, the multi-core electrode plate includes a shell 100 and an electrode assembly, the middle of the shell 100 is hollowed out, and the electrode assembly is fixed to the hollowed out portion of the shell 100. In this embodiment, the electrode assembly includes a first electrode 210, a second electrode 220, a third electrode 230, and a fourth electrode 240; in other embodiments other than this embodiment, the electrode assembly can also be set to be not limited to the four electrodes described in this embodiment, for example, it can be six electrodes in pairs, two electrodes, or more electrodes.

[0048] Figure 2 It shows Figure 1 The figure shows the cross-sectional state of the shell 100 and the electrode assembly. The multi-core electrode plate is a fan-shaped plate as a whole, that is, the cross-section is fan-shaped, and the axial extension is plate-shaped. The multi-core electrode plate is fixed by the inner curved surface cooperating with the tubular side wall of the detection instrument.

[0049] Combination Figure 1 and 2 , the electrode assembly shown in this embodiment is a structure independent of each other. The first electrode 210, the second electrode 220, the third electrode 230, and the fourth electrode 240 are arranged from the inside to the outside at once, and the first electrode 210 is a strip, and the second electrode 220, the third electrode 230, and the fourth electrode 240 are all ring-shaped. The first electrode 210, the second electrode 220, the third electrode 230, and the fourth electrode 240 are arranged at intervals from each other, and the fourth electrode 240 and the shell 100 are also arranged at intervals. More specifically, the center of the second electrode 220 is hollowed out, and the first electrode 210 is arranged at the hollow part of the second electrode 220 and does not contact the second electrode 220; the center of the third electrode 230 is hollowed out, and the second electrode 220 is arranged at the hollow part of the third electrode 230 and does not contact the third electrode 230; the center of the fourth electrode 240 is hollowed out, and the third electrode 230 is arranged at the hollow part of the fourth electrode 240 and does not contact the fourth electrode 240.

[0050] Figure 3 What is shown is a schematic diagram of the assembly relationship between the housing 100 and the electrode assembly. Figure 3In the figure, there is a gap between the shell 100 and the electrode assembly to isolate each other, and there is a filler 300 in the gap. The filler 300 is formed by injection molding of a polymer solid material. After the polymer solid material is molded, the shell 100 and the electrode assembly are connected to each other as a whole; in this embodiment, the polymer solid material refers to any material in the prior art that has high strength and deformation resistance after injection molding, especially plastics, such as polystyrene, ABS, polycarbonate, etc., but is not limited to the several materials recorded above.

[0051] In this embodiment, the electrode assembly and the shell 100 are integrally formed parts, made of the same metal material, especially made of stainless steel or high-temperature nickel-based alloy with wear resistance and pressure bearing performance. Since the electrode block is installed on the surface of the equipment and collects signals in the flowing mud and crude oil, the electrode block is directly washed by sand and mud. At the same time, the product is used in working conditions with vibration, impact, high temperature, high liquid pressure and other environments. Therefore, directly using the above materials can overcome the obstacles of the application environment. On this basis, in order to meet the requirement that the voltage difference of the entire electrode is less than 0.5mV during the signal acquisition process, the applicant arranges conductive copper rods on the first electrode 210, the second electrode 220, the third electrode 230, and the fourth electrode 240 to make up for the potential difference between the front and rear ends of the electrode block.

[0052] For details on the arrangement of the conductive copper rods, see Figures 4 to 7 .

[0053] Figure 4 A schematic diagram of the back structure of the first electrode 210 is shown. Figure 4 In the embodiment, a first conductive slot 211 extending axially (in the same length extension direction P) is provided on the back of the first electrode 210. A conductive copper rod is placed in the first conductive slot 211. The conductive copper rod can be pressed into the first conductive slot 211 by interference fit.

[0054] Figure 5 The back structure schematic diagram of the second electrode 220 is shown. The back of the second electrode 220 is provided with an annular second conductive groove 221 matching the second electrode 220, and a conductive copper rod is placed in the second conductive groove 221, and the conductive copper rod can be pressed into the second conductive groove 221 by interference fit.

[0055] Figure 6 The back structure schematic diagram of the third electrode 230 is shown. The back of the third electrode 230 is provided with an annular third conductive groove 231 matching the third electrode 230, and a conductive copper rod is placed in the third conductive groove 231, and the conductive copper rod can be pressed into the third conductive groove 231 by interference fit.

[0056] Figure 7The back structure of the fourth electrode 240 is shown. The back of the fourth electrode 240 is provided with an annular fourth conductive slot 241 matching the fourth electrode 240, and a conductive copper rod is placed in the fourth conductive slot 241, which can be press-fitted in the fourth conductive slot 241 by interference fit.

[0057] Figure 8 FIG. 1 is a schematic diagram showing the electrical connection structure between the electrode assembly and the housing 100. Fig. 9 It shows Figure 8 A partial enlarged view of the B in the figure. The first pin 212 is electrically connected to the first electrode 210, the second pin 222 is electrically connected to the second electrode 220, the third pin 232 is electrically connected to the third electrode 230, and the fourth pin 242 is electrically connected to the fourth electrode 240. The end of the housing 100 is also provided with a flange 110, which is annular and has a vulcanization chamber inside. A contact piece (not shown in the figure) is provided in the vulcanization chamber, so that the first pin 212, the second pin 222, the third pin 232 and the fourth pin 242 are all electrically connected to the contact piece, so that the signal collection and transmission are realized by connecting the contact piece to the external circuit.

[0058] In some other embodiments, the first conductive slot 211, the second conductive slot 221, the third conductive slot 231 and the fourth conductive slot 241 are also respectively configured as a first conductive channel, a second conductive channel, a third conductive channel and a fourth conductive channel. The difference between a conductive channel and a conductive slot is that a conductive channel is formed inside and is not exposed.

[0059] In this embodiment, for example, it can be set as follows: the first electrode 210 and the second electrode 220 form a pair of electrodes, for example, the first electrode 210 transmits a signal, and the second electrode 220 receives a signal; the third electrode 230 and the fourth electrode 240 form a pair of electrodes, one end of the first electrode 210 is connected to the first pin, and the other end of the first electrode 210 is far away from the first pin. Since the first electrode 210 itself has a certain resistance, there is a voltage difference between the two ends of the first electrode 210. The smaller the voltage difference, the closer the signal strength radiated from the two ends of the first electrode 210, and the more accurate the measured data. Adding a conductor can reduce the voltage difference between the two ends of the first electrode 210, and the same is true for other electrodes.

[0060] It should be noted that, in this embodiment, each pin is only electrically connected to the corresponding electrode and is insulated from other electrodes. For example, an insulator is wrapped around the pin or an insulating dielectric is sprayed on the pin, and only one end of the conductive metal is exposed, and the exposed conductive metal is completely pressed into the corresponding electrode.

[0061] See also Figures 4 to 7Corresponding to the above description, a first crimping groove 213 is provided at one end of the first electrode 210, the groove width of the first crimping groove 213 is smaller than the first conductive groove 211, and the crimping portion (i.e., the exposed conductive metal) of the first plug pin 212 has an expanded structure, which is press-fitted into the first conductive groove 211, and the entire crimping portion is press-fitted into the first crimping groove 213. The first plug pin 212 is press-fitted with interference fit to improve the contact with the first electrode 210 and ensure the effect of signal transmission.

[0062] In addition, a feature of the above structure is that it relies on a structural design that compensates for the potential difference between the front and rear ends of the electrode block by setting a first conductive groove 211 to press-fit a conductive copper rod, and a first crimping groove 213 with a groove width smaller than the first conductive groove 211 is set to press-fit the first pin 212, thereby forming a limit based on a step structure and an expanded structure to ensure the stability of the first pin 212 after connection.

[0063] A second crimping groove 223 and a second wire-passing hole 224 are provided at one end of the second electrode 220. The second crimping groove 223 is used for pressing the second pin 222. The second wire-passing hole 224 is used to accommodate the first pin 212 to pass through. The second crimping groove 223 is connected to the second conductive groove 221 to form a cross structure. The second pin 222 also has an enlarged structure at the crimping portion (i.e., the exposed conductive metal). The enlarged structure is placed in the second conductive groove 221 during pressing.

[0064] A third crimping groove 233 and two third wire-passing holes 234 are provided at one end of the third electrode 230. The third crimping groove 233 is used for pressing the third pin 232. The third wire-passing hole 234 is used to accommodate the first pin 212 and the second pin 222 to pass through. The third crimping groove 233 is connected to the third conductive groove 231 to form a cross structure. The third pin 232 also has an enlarged structure in the crimping portion (i.e., the exposed conductive metal). The enlarged structure is placed in the third conductive groove 231 during pressing.

[0065] A fourth crimping groove 243 and three fourth wire-passing holes 244 are provided at one end of the fourth electrode 240. The fourth crimping groove 243 is used to press-fit the fourth pin 242. The fourth wire-passing hole 244 is used to accommodate the first pin 212, the second pin 222 and the third pin 232 to pass through. The fourth crimping groove 243 is connected to the fourth conductive groove 241 to form a cross structure. The fourth pin 242 also has an enlarged structure in the crimping portion (i.e., the exposed conductive metal). The enlarged structure is placed in the fourth conductive groove 241 during press-fitting.

[0066] In addition, in this embodiment, in order to improve the connection strength and stability between the housing 100 and the electrode assembly, Figure 5 and 7In the structural schematic diagram of the second electrode 220 and the fourth electrode 240 shown in the figure, filling grooves 310 are set on both sides of each electrode facing the gap, and the first electrode 210 and the third electrode 230 have the same on both sides and the shell 100 has the same on both sides facing the gap. No repeated marking is made in the figure. The filling groove 310 is set to embed the filling body 300 into the shell 100 and the electrode assembly during the injection molding process to form a more stable connection structure.

[0067] See also Figure 3 The outer surface of the electrode assembly after molding is in the same arc surface as the outer surface of the shell 100, and the radius of the arc surface where the inner surface of the electrode assembly is located is larger than the radius of the arc surface where the inner surface of the shell 100 is located, so that the filling body 300 can cover the back of the electrode assembly, and completely wrap and cover the filling slots, conductive slots and pins on the back for protection. These structures are arranged on the back, and fit with the installation wall of the instrument after being installed on the instrument, which further enhances the protection and insulation between the equipment parts. The outer surface of the electrode assembly and the outer surface of the shell 100 are in the same arc surface for the convenience of installation on the instrument. The arc shape is easier to install than other shapes, and the arc surface is preferably a circular arc. Although the electrode is in direct contact with oil / water, when in use, the electrode assembly also needs to be installed in an instrument with an arc surface, and the part of the instrument wall corresponding to the electrode is hollowed out to expose the electrode.

[0068] See also Figure 1 and 8 A plurality of connection holes 101 are provided on the shell 100. Through the cooperation between the connection holes 101 and the bolts, the multi-core electrode plate can be stably connected to the outer wall of the instrument as a whole.

[0069] In addition, this embodiment also provides a forming method of the multi-core electrode plate.

[0070] The forming method of the multi-core electrode plate comprises the following steps:

[0071] The first step is to form the blank.

[0072] The multi-core electrode plate blank is formed by the existing process, and the blank has the following characteristics:

[0073] (1) The electrode assembly and the housing 100 are an integrated structure and are made of the same material, for example, they may be cast from molten metal;

[0074] (2) Each electrode has at least two injection molding positioning convex keys 400 on its outer arc surface (front surface), and all the injection molding positioning convex keys 400 are in the same plane, see Fig.10 ;

[0075] Step 2: Finishing

[0076] Processing inner and outer arc surfaces, as well as various structural grooves and holes, such as filling grooves 310, various crimping grooves, conductive grooves, wire holes, etc.;

[0077] Step 3: Cutting the electrode assembly

[0078] Cutting the electrode assemblies out from the inside of the shell 100 in sequence;

[0079] Step 4: Component Assembly

[0080] Press the conductive copper rod into the conductive slot, pass the pin through the wire holes of the housing and the electrode block, and press it with the corresponding electrode block;

[0081] Step 5: Injection molding

[0082] Using the injection molding positioning convex key 400 as a positioning mark, the assembled multi-core electrode plate is placed into the mold for injection molding;

[0083] Step 6: Secondary processing

[0084] Just remove the injection molding positioning convex key 400.

[0085] The forming process is characterized in that: the metal shell and the electrode are processed in one piece. Under the same processing standard, first, the thickness of all electrode blocks can be guaranteed to be uniform, and the outer ring surfaces of all electrode blocks are in the same circular surface, which can guarantee the concentricity of the arc surface of the electrode block to a certain extent, which is of great significance to the sensitivity and accuracy of the working of the electrode block; second, the one-piece processing only requires the pre-design of a material of the size of the shell, and each electrode is obtained while the shell is being processed and formed. Compared with the separate processing of each electrode, it can greatly reduce processing waste, that is, it can greatly reduce the use of raw materials and improve the utilization efficiency of raw materials; third, the vias and crimping holes between the metal shell and the electrode block are processed before separation, which can ensure their coaxiality and facilitate the assembly between the pin and the electrode block; fourth, the injection molding positioning convex key is in the same plane, which ensures that the arc surface of the metal shell and the electrode block is unified during the injection molding process, and the secondary machining only needs to process the injection molding positioning convex key to avoid the processing of the integrated arc surface after the secondary machining.

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them.

Claims

1. Multi-core electrode plate, It is characterized in that include: A shell, wherein the middle of the shell has a hollow portion; The electrode assembly is arranged in the hollow part at intervals, and the electrodes and the electrode and the shell are spaced to form gaps; the electrode assembly is formed by a plurality of strip-shaped or ring-shaped electrodes arranged in sequence at intervals; Pins, the pins are arranged in multiple groups and are electrically connected to each electrode one by one, the other end of the pins is electrically connected to a connector, and the connector is fixed to the housing; A filling body, wherein the filling body is filled in the gap, the housing and the electrode assembly are fixedly connected via the filling body, and the pin is encapsulated in the filling body; The electrode comprises an electrode block and a conductor, the electrode block has a length extension direction, the electrode block has a conductive groove arranged on the surface of the electrode block, and the conductive groove has at least a mounting portion arranged along the length extension direction of the electrode block; at least a part of the conductor is located in the mounting portion and is electrically connected to the electrode block, and the conductivity of the conductor is higher than that of the electrode block; The conductor is press-fitted into the conductive slot; The electrode is provided with a crimping groove connected to the conductive groove, the plug pin has an insulating section and a conductive section, the insulating section has an insulating coating layer extending from the plug connector to the conductive section, and the conductive section is crimped in the crimping groove; The forming process of the multi-core electrode plate comprises the following steps: Forming a blank, in which the electrode assembly and the shell are integrated, and each electrode has at least two injection molding positioning convex keys; The wire holes, crimping grooves and conductive grooves on the electrodes are punched and processed as a whole in the original state; Cut each electrode from the original blank; Press the conductor into the conductive slot, and press the pin through hole into the crimping slot; Using the injection molding positioning convex key as the positioning mark, the assembled housing and electrode assembly are transferred into the injection mold for injection molding; By removing the injection-molded positioning convex keys on the electrodes, a multi-core electrode plate can be obtained.

2. The multi-core electrode plate according to claim 1, It is characterized in that The voltage difference between the two ends of the electrode along the length extension direction is less than 0.5mV; and / or the electrode block is made of wear-resistant and pressure-resistant metal; and / or the electrode block is made of stainless steel or high-temperature nickel-based alloy, and the conductor is copper.

3. The multi-core electrode plate according to claim 1, It is characterized in that The electrode blocks include strip-shaped and ring-shaped ones, and all the electrodes are nested in sequence from the inside to the outside, and the strip-shaped electrode block is arranged in the center.

4. The multi-core electrode plate according to claim 1, It is characterized in that The conductive segment has an enlarged portion received in the conductive slot.

5. The multi-core electrode plate according to claim 1, It is characterized in that A filling groove is arranged on the side walls of the electrode and the shell facing the gap, and a part of the filling body is fixedly accommodated in the filling groove.

6. The multi-core electrode plate according to claim 1, It is characterized in that Taking a cross section perpendicular to the length extension direction of the electrode block, the shell and the electrode assembly are fan-shaped, and the outer arc surfaces of the shell and the electrode assembly are on the same arc surface, and the inner arc surfaces of the electrodes are on the same arc surface.

7. The multi-core electrode plate according to claim 1, It is characterized in that The inner arc surface radius of the electrode is greater than the inner arc surface radius of the shell.

8. The multi-core electrode plate according to claim 1, It is characterized in that Each electrode other than the innermost electrode in the electrode assembly is provided with a wire passing hole, and the number of the wire passing holes on each electrode is the ordinal number of the electrode from the inside to the outside in the electrode assembly minus one. The shell is provided with wire passing holes equal in number to the electrodes, the wire passing holes accommodate the insulating sections of the pins, and the wire passing holes extend along the length direction of the electrode block.

9. The multi-core electrode plate according to claim 1, It is characterized in that The shell is provided with a connecting hole.

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