Superconducting strip measuring electrode terminal and working method thereof

Abstract

The invention discloses a superconducting tape measuring electrode terminal and a working method thereof. The superconducting tape measuring electrode terminal comprises a cooling medium assembly, a current terminal assembly and a voltage terminal assembly. The current terminal assembly comprises an electrode stem, a flexible conductor and a carrier electrode, the electrode stem is in sliding connection with the cooling medium assembly, the flexible conductor and the carrier electrode are oppositely arranged in the inner cavity, and one side, facing the carrier electrode, of the flexible conductor is provided with a flexible connecting end; the voltage terminal assembly comprises a conductive elastic sheet and an acquisition terminal, and the electrode stem is connected with the acquisition terminal through the conductive elastic sheet. According to the embodiment of the invention, the flexible conductor and the conductive elastic sheet are in contact with the superconducting tape, the flexible conductor and the conductive elastic sheet have certain elasticity and toughness, and can deform to a certain extent when being subjected to impact force, so that the impact force is absorbed and dispersed, and multi-stage buffering ensures that the pressure is controllable and gradually increased in the crimping process; and the risk of mechanical damage or thermal damage to the superconducting tape in the testing process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of superconducting tape measurement, and in particular to a superconducting tape measurement electrode terminal and a working method thereof. Background Art

[0002] High-temperature superconducting materials have high critical transition temperatures and high current-carrying characteristics under back field conditions, and have great application prospects in power devices such as superconducting motors, superconducting energy storage, and superconducting induction heating. Currently, the main materials that have the conditions for industrial production and engineering application include the first-generation high-temperature superconducting tape (Bi2223) and the second-generation high-temperature superconducting tape (REBCO). The uniformity of the current-carrying capacity of superconducting tapes is a key technical indicator for their application.

[0003] Testing the critical current uniformity along the length of a superconducting tape typically uses the "four-lead method" to measure the critical current. Current is applied to both ends of the tape, and the voltage signal in the middle region is measured. A quench criterion of 1 microvolt per centimeter is used to determine the critical current of the tape. During the test, the current and voltage leads come into contact with the tape, which can cause mechanical damage.

[0004] In summary, the existing superconducting tape measurement has the technical problem of mechanical damage caused by the contact between the current lead, the voltage lead and the superconducting tape. Summary of the Invention

[0005] The purpose of this application is to overcome the above technical deficiencies, propose a superconducting tape measuring electrode terminal and a working method thereof, and solve the technical problem in the prior art of mechanical damage caused by contact between current leads, voltage leads and superconducting tapes.

[0006] In order to achieve the above technical objectives, this application adopts the following technical solutions: In a first aspect, the present application provides a superconducting tape measurement electrode terminal, comprising a cooling medium assembly, a current terminal assembly, and a voltage terminal assembly.

[0007] a cooling medium assembly having an inner cavity for forming a superconducting environment, the superconducting tape passing through the inner cavity; a current terminal assembly, comprising an electrode rod, a flexible conductor, and a carrier electrode, wherein the electrode rod is slidably connected to the cooling medium assembly, the flexible conductor and the carrier electrode are arranged relative to each other in the inner cavity, the carrier electrode is used to carry the superconducting tape, the flexible conductor has a flexible connection end on a side facing the carrier electrode, and the electrode rod drives the flexible connection end to approach the superconducting tape until it is electrically connected or moves away from the superconducting tape; The voltage terminal assembly includes a conductive spring and a collection terminal. The electrode rod is connected to the collection terminal through the conductive spring. The collection terminal is arranged on the side of the conductive spring facing the superconducting tape. The electrode rod is used to drive the collection terminal close to the superconducting tape until it is electrically connected or away from the superconducting tape.

[0008] In some embodiments of the present application, the current terminal assembly further includes a bracket, a spring unit and a pressure block unit, the bracket is connected to the electrode rod, the spring unit is connected to the bracket, the pressure block unit is connected to the spring unit, and the flexible conductor at least covers one side surface of the pressure block unit facing the carrier electrode.

[0009] In some embodiments of the present application, the spring unit includes a plurality of springs distributed in an array, and the pressure block unit includes a plurality of pressure blocks distributed in an array. The two ends of each spring are respectively connected to the bracket and one pressure block, and each pressure block is connected to the flexible conductor.

[0010] In some embodiments of the present application, the carrier electrode is connected in parallel with the flexible conductor.

[0011] In some embodiments of the present application, the current terminal assembly further includes a driving unit, which is in driving connection with the electrode rod to drive the electrode rod to move toward or away from the superconducting tape.

[0012] In some embodiments of the present application, the voltage terminal assembly further includes an insulating bracket, and the insulating bracket is respectively connected to the electrode rod and the conductive spring.

[0013] In some embodiments of the present application, the voltage terminal assembly further includes an insulating gasket, which is arranged opposite to the conductive spring.

[0014] In some embodiments of the present application, the cooling medium assembly includes a cooling medium shell and a cooling medium infusion tube, the cooling medium shell has a hollow inner cavity, the inner cavity accommodates the flexible conductor, the carrier electrode and the conductive spring, the inner cavity is connected to the cooling medium infusion tube, and the cooling medium infusion tube is used to introduce the cooling medium.

[0015] In some embodiments of the present application, the cooling medium shell has a cooling medium outlet and an electrode rod interface, and the two cooling medium outlets are respectively opened on two opposite sides of the cooling medium shell for passing the superconducting tape, and the electrode rod interface is opened on the top surface of the cooling medium shell and is connected to the electrode rod.

[0016] In a second aspect, the present application further provides a method for operating a superconducting tape measuring electrode terminal, using the superconducting tape measuring electrode terminal as described in any one of the first aspects, comprising the following steps: delivering a cooling medium to the superconducting tape via a cooling medium assembly; The flexible conductor moves downward until the carrier electrode and the flexible conductor are respectively connected to two sides of the superconducting tape; inputting current into the superconducting tape through the carrier electrode and the flexible conductor; The conductive spring moves downward until the collection terminal is connected to the superconducting tape to collect the voltage signal; The flexible conductor and the conductive spring move upward, and the superconducting tape is driven. The above steps are repeated to test multiple areas of the superconducting tape.

[0017] Compared with the existing technology, the technical solution provided by this application brings the following beneficial technical effects: This application contacts the superconducting tape through flexible conductors and conductive springs. The flexible conductors and conductive springs have certain elasticity and toughness. When subjected to impact, they can deform to a certain extent, absorb and disperse the impact force. Multi-level buffering ensures that the pressure during the crimping process is controllable and gradually increases, reducing the risk of mechanical or thermal damage to the superconducting tape during testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in this application, the following briefly introduces the drawings required for use in the embodiments: Figure 1 This is a schematic structural diagram of a superconducting tape measurement electrode terminal provided in an embodiment of the present application; Figure 2 This is a schematic structural diagram of a cooling medium assembly provided in an embodiment of the present application; Figure 3 This is a structural diagram of a current terminal assembly provided in an embodiment of the present application; Figure 4 This is a structural diagram of a voltage terminal assembly provided in an embodiment of the present application.

[0019] Reference numerals: Cooling medium assembly 1, cooling medium housing 11, cooling medium outlet 12, cooling medium infusion tube 13, electrode rod interface 14; Current terminal assembly 2, flexible conductor 21, carrier electrode 22, electrode rod 23, bracket 24, spring unit 25, pressing block unit 26; Voltage terminal assembly 3, conductive spring 31, insulating bracket 32, insulating gasket 33. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0021] Those skilled in the art will understand that in this specification, the wording "including" is an open-ended expression, which means that the described features exist but does not exclude other features. The directional words "up", "down", "left", "right", etc. are exemplary directions based on the drawings. Features defined as "first" and "second" implicitly include one or more of the features. Singular expressions can also be used in the plural. "Multiple" means two or more. The terms "installed", "connected", and "connected" can be fixed connections, detachable connections, or integrated connections; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two elements. In addition, "connected" can include wireless connections.

[0022] The purpose of this application is to overcome the above technical deficiencies, propose a superconducting tape measuring electrode terminal and a working method thereof, and solve the technical problem in the prior art of mechanical damage caused by contact between current leads, voltage leads and superconducting tapes.

[0023] In order to achieve the above technical objectives, this application adopts the following technical solutions: like Figures 1 to 4 As shown, in a first aspect, the present application provides a superconducting tape measurement electrode terminal, comprising a cooling medium component 1 , a current terminal component 2 and a voltage terminal component 3 .

[0024] The cooling medium assembly 1 has an inner cavity for forming a superconducting environment, through which the superconducting tape passes, and is mainly used to provide a cooling environment to ensure that the superconducting tape operates under low temperature conditions, thereby maintaining its superconducting properties.

[0025] The current terminal assembly 2 includes a flexible conductor 21, a carrier electrode 22, and an electrode rod 23. The electrode rod 23 is slidably connected to the cooling medium assembly 1. The flexible conductor 21 and the carrier electrode 22 are relatively arranged in the inner cavity. The carrier electrode 22 is used to carry the superconducting tape. The flexible conductor has a flexible connection end on the side facing the carrier electrode 22. The electrode rod 23 drives the flexible connection end close to the superconducting tape until it is electrically connected or away from the superconducting tape. The flexible conductor 21 is used to transmit current. Its flexible characteristics allow it to deform when subjected to external force without being easily broken or damaged. The carrier electrode 22 and the flexible conductor 21 are arranged relatively to each other to jointly complete the input or output of current.

[0026] The voltage terminal assembly 3 includes a conductive spring 31 and a collection terminal. The electrode rod 23 is connected to the collection terminal via the conductive spring 31. The collection terminal is located on the side of the conductive spring 31 facing the superconducting tape. The electrode rod 23 is used to drive the collection terminal toward the superconducting tape until it is electrically connected, or to move it away from the tape. The elastic properties of the conductive spring 31 provide a travel margin when the collection terminal contacts the superconducting tape, preventing damage to the terminal and the tape from excessive contact. The presence of the conductive spring 31 allows the collection terminal to be elastically compressed, absorbing and dissipating impact forces when squeezed. The collection terminal is used to measure voltage. It can have at least two contacts to form a circuit with the superconducting tape, or at least two collection terminals, each with one contact, can be provided, with both terminals forming a circuit with the superconducting tape. The collection terminal is a weak voltage acquisition device, such as a high-precision voltmeter or data acquisition system, used to collect voltage signals from the superconducting tape when it is carrying current.

[0027] The present application contacts the superconducting tape through a flexible conductor 21 and a conductive spring sheet 31. The flexible conductor 21 and the conductive spring sheet 31 have certain elasticity and toughness. When subjected to impact force, they can deform to a certain extent to absorb and disperse the impact force. The multi-level buffering ensures that the pressure during the crimping process is controllable and gradually increases, reducing the risk of mechanical damage or thermal damage to the superconducting tape during testing.

[0028] In some embodiments of the present application, the cooling medium assembly 1 includes a cooling medium shell 11 and a cooling medium infusion tube 13, the cooling medium shell 11 has a hollow inner cavity, the inner cavity accommodates the flexible conductor 21, the carrier electrode 22 and the conductive spring 31, the inner cavity is connected to the cooling medium infusion tube 13, and the cooling medium infusion tube 13 is used to introduce the cooling medium.

[0029] The inner cavity of the cooling medium housing 11 is used to hold a cooling medium (such as liquid nitrogen), providing a continuous low-temperature environment for the superconducting tape. The housing may be made of, but is not limited to, insulating materials such as fiberglass reinforced plastic (FRP) and Teflon. A cooling medium infusion pipe 13 connects the cooling medium housing 11 to an external cooling medium container (such as a liquid nitrogen tank) and is used to transport the cooling medium, supplying pure liquid nitrogen to the liquid nitrogen cavity.

[0030] The liquid nitrogen chamber assembly provides a stable, low-temperature environment for the superconducting tape, which is crucial for maintaining its superconducting state. The design of the liquid nitrogen chamber allows liquid nitrogen to flow efficiently through the superconducting tape, ensuring that the tape remains cool throughout the test. The design of the cooling medium housing 11 and the liquid nitrogen chamber makes the entire measurement device compact, making it easy to install and maintain. The liquid nitrogen chamber design helps reduce thermal shock that the superconducting tape may experience during testing, thereby protecting the tape from damage.

[0031] In some embodiments of the present application, the cooling medium shell 11 has a cooling medium outlet 12 and an electrode rod interface 14. The two cooling medium outlets 12 are respectively opened on two opposite sides of the cooling medium shell 11 for passing superconducting tape. The electrode rod interface 14 is opened on the top surface of the cooling medium shell 11 and is connected to the electrode rod 23.

[0032] Liquid nitrogen is introduced into the liquid nitrogen cavity via the cooling medium infusion pipe 13. The liquid nitrogen cavity is suspended in the liquid nitrogen tank of the superconducting tape critical current continuous measurement device to ensure that the superconducting tape is cooled by liquid nitrogen. The superconducting tape enters and exits the cooling medium housing 11 through two cooling medium outlets 12, respectively. During this process, the superconducting tape is cooled to a superconducting state. The current terminal assembly 2 and the voltage terminal assembly 3 are arranged in the inner cavity of the cooling medium housing 11, respectively contacting the superconducting tape to transmit current and measure voltage. Liquid nitrogen is transported from the liquid nitrogen tank into the inner cavity via the cooling medium infusion pipe 13. The liquid nitrogen flows in the inner cavity and flows out through the liquid nitrogen outlet to provide cooling for the superconducting tape. The cooling medium outlet 12 in the cooling medium housing 11 ensures the flow of the cooling medium and maintains the cooling state of the superconducting tape.

[0033] The electrode rod interface 14 is opened above the current terminal assembly 2, that is, located at the top of the liquid nitrogen chamber, for the electrode rod 23 to pass through, so that the electrode rod 23 can control the up and down movement of the current terminal assembly 2 and / or the voltage terminal assembly 3.

[0034] In some embodiments of the present application, the current terminal assembly 2 also includes an electrode rod 23, a bracket 24, a spring unit 25 and a pressure block unit 26, the electrode rod 23 is slidingly connected to the cooling medium assembly 1, the bracket 24 is fixed to the lower end of the electrode rod 23, the spring unit 25 is installed below the bracket 24, the pressure block unit 26 is installed below the spring unit 25, and the flexible conductor 21 at least covers one side surface of the pressure block unit 26 facing the carrier electrode 22.

[0035] The electrode rod 23 passes through the liquid nitrogen chamber and is connected to the driving assembly, which is used to move the current terminal up and down.

[0036] Bracket 24 is fixed to electrode rod 23 and serves as a support structure for the spring array, pressure block array, and flexible conductor 21. The spring array is mounted on bracket 24, providing an upward force to ensure contact pressure between the pressure block array and carrier electrode 22. The pressure block array is mounted below the spring array to press the flexible conductor 21 against the carrier electrode 22 to ensure electrical contact.

[0037] Flexible conductor 21, comprising but not limited to copper or silver braid, covers the surface of the compact array facing carrier electrode 22, transmitting current. Carrier electrode 22 is secured to the bottom of the liquid nitrogen chamber and connected in parallel with flexible conductor 21, directly feeding current into the superconducting tape. Carrier electrode 22 includes but is not limited to materials with low resistivity, such as oxygen-free copper or processed silver.

[0038] The drive assembly moves the electrode rod 23 according to the control signal, driving the bracket 24, spring array, pressure block array, and flexible conductor 21 up and down. When the current terminal assembly 2 moves to the designated position, the pressure provided by the spring array brings the pressure block array and flexible conductor 21 into close contact with the carrier electrode 22. Current is transferred to the superconducting tape through the carrier electrode 22 and flexible conductor 21, allowing the critical current to be measured.

[0039] In some embodiments of the present application, the spring unit 25 includes a plurality of springs distributed in an array, and the pressure block unit 26 includes a plurality of pressure blocks distributed in an array. The two ends of each spring are respectively connected to the bracket 24 and one of the pressure blocks, and each of the pressure blocks is connected to the flexible conductor.

[0040] The design of the spring array ensures that each pressure block can provide uniform pressure, thereby making the contact between the flexible conductor and the carrier electrode 22 more uniform and reducing the contact resistance. The use of multiple springs and pressure blocks improves the stability of the electrode contact and maintains stable electrical contact even during the movement of the electrode rod 23. Since the pressure is evenly distributed, the force borne by a single pressure block is small, which helps to reduce the wear of the flexible conductor and the carrier electrode 22 and extend the service life. The present application uses array crimping to adapt to the surface contour of the superconducting tape, and even for uneven surfaces, a large contact area can be ensured. The liquid nitrogen chamber assembly protects the electrode by inputting pure liquid nitrogen to prevent the conductive tape and the electrode surface from freezing, thereby significantly reducing the system crimping resistance.

[0041] In some embodiments of the present application, the carrier electrode 22 is connected in parallel with the flexible conductor 21 .

[0042] The flexible conductor 21 adapts to minute deformations of the superconducting tape, while the carrier electrode 22 provides stable support. This combination improves the mechanical stability of the electrical contact. Because the parallel connection reduces contact resistance and thermal effects, it improves the accuracy of critical current measurements in the superconducting tape. The uniform current distribution reduces local overheating and wear, thereby extending the service life of the carrier electrode 22 and flexible conductor 21.

[0043] In some embodiments of the present application, the current terminal assembly 2 further includes a driving unit, which is transmission-connected to the electrode rod 23 and includes a servo motor or a cylinder.

[0044] The drive assembly can be a servo motor or a pneumatic cylinder, which is used to drive the electrode rod 23 up and down, thereby achieving precise position control of the moving parts of the current terminal assembly 2. The up and down movement of the electrode rod 23 is driven by the servo motor or the pneumatic cylinder, which can achieve precise position control of the current terminal assembly 2 and ensure stable contact with the carrier electrode 22.

[0045] In some embodiments of the present application, the voltage terminal assembly 3 further includes an insulating bracket 32 , the insulating bracket 32 is connected to the electrode rod 23 , and the conductive spring 31 is installed below the insulating bracket 32 .

[0046] The insulating bracket 32 supports the conductive spring 31 and provides electrical insulation to prevent current leakage. The electrode rod 23 is connected to the insulating bracket 32, serving as a support and positioning structure for the voltage terminal assembly 3. The conductive spring 31 is mounted below the insulating bracket 32 and is in contact with the superconducting tape to measure voltage.

[0047] As the superconducting tape passes through the liquid nitrogen chamber, the conductive spring 31 contacts the tape, forming a voltage measurement point. This contact allows the conductive spring 31 to measure the voltage difference across the tape, thereby determining the tape's voltage characteristics. The insulating bracket 32 ensures good electrical insulation between the conductive spring 31 and the electrode rod 23, as well as the surrounding environment, preventing short circuits and leakage.

[0048] In some embodiments of the present application, the voltage terminal assembly 3 further includes an insulating gasket 33 , and the insulating gasket 33 is arranged opposite to the conductive elastic sheet 31 .

[0049] The insulating spacer 33 is located opposite the conductive spring 31, that is, on the other side of the superconducting tape. Its main function is to provide additional electrical insulation to prevent short circuits between the conductive spring 31 and the superconducting tape, and between the conductive spring 31 and other metal or conductive components.

[0050] When the superconducting tape passes through the voltage terminal assembly 3 , the conductive spring 31 contacts the superconducting tape, while the insulating spacer 33 ensures that the other side of the superconducting tape does not contact any conductive part.

[0051] The conductive spring 31 can measure the voltage signal of the superconducting tape by contacting one side of the superconducting tape. The presence of the insulating spacer 33 ensures the accuracy and stability of the voltage signal because it prevents any potential electrical interference.

[0052] In a second aspect, the present application further provides a method for operating a superconducting tape measuring electrode terminal, using the superconducting tape measuring electrode terminal as described in any one of the first aspects, comprising the following steps: delivering a cooling medium to the superconducting tape via a cooling medium assembly 1; The flexible conductor 21 moves downward until the carrier electrode 22 and the flexible conductor 21 are respectively connected to both sides of the superconducting tape; Inputting current into the superconducting tape through the carrier electrode 22 and the flexible conductor 21; The conductive spring 31 moves downward until the collection terminal is connected to the superconducting tape to collect the voltage signal; The flexible conductor 21 and the conductive spring 31 move upward, and the superconducting tape is driven. The above steps are repeated to test multiple areas of the superconducting tape.

[0053] Specifically, a cooling medium (usually liquid nitrogen) is delivered to the superconducting tape through the cooling medium assembly 1 (such as a liquid nitrogen cavity and a liquid delivery pipe 13 ) to reduce the temperature of the superconducting tape to a superconducting state.

[0054] The electrode rod 23 drives the moving parts of the current terminal (including the flexible conductor 21, the pressure block array, etc.) to move downward, so that the flexible conductor 21 presses the superconducting tape onto the metal electrode through the pressure block array, forming a contact point for current transmission.

[0055] The current source inputs current into the superconducting tape through the metal electrodes and the flexible conductor 21 to test the current carrying capacity of the superconducting tape.

[0056] The conductive spring 31 moves downward, contacts the superconducting tape, and is connected to a weak voltage collection device to collect a voltage signal of the superconducting tape when the tape carries current.

[0057] The electrode rod 23 drives the moving part of the current terminal to move upward, and the superconducting tape transmission device transfers the superconducting tape to the next test area. The above steps are repeated to test multiple areas of the superconducting tape until the test of the entire long tape is completed.

[0058] The entire testing process is automated, reducing manual labor and improving testing efficiency. By precisely controlling the movement of the current terminal and conductive spring 31, the voltage and current signals of the superconducting tape can be accurately measured. Continuous testing of multiple areas of the superconducting tape improves test comprehensiveness and data accuracy.

[0059] Compared with the existing technology, the technical solution provided by this application brings the following beneficial technical effects: The current terminal assembly 2 of the present application is composed of a spring array, a pressure block array, and a flexible conductor 21, forming a multi-stage buffered segmented superconducting tape crimping component. The segmented crimping ensures a large contact area, and the multi-stage buffering ensures that the pressure during the crimping process is controllable and gradually increases, reducing the risk of mechanical or thermal damage to the superconducting tape during testing. The liquid nitrogen chamber assembly protects the electrodes by inputting pure liquid nitrogen, preventing ice from forming on the conductive tape and electrode surfaces, thereby ensuring long-term stable operation of the system.

[0060] Those skilled in the art will understand that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, changed, rearranged, decomposed, combined, or deleted.

[0061] The specific implementation methods of the present application described above do not limit the scope of protection of the present application. Any other corresponding changes and modifications made based on the technical concept of the present application should be included in the scope of protection of the claims of the present application.

Claims

1. A superconducting tape measuring electrode terminal, characterized in that: include: a cooling medium assembly having an inner cavity for forming a superconducting environment, the superconducting tape passing through the inner cavity; a current terminal assembly, comprising an electrode rod, a flexible conductor, and a carrier electrode, wherein the electrode rod is slidably connected to the cooling medium assembly, the flexible conductor and the carrier electrode are arranged relative to each other in the inner cavity, the carrier electrode is used to carry the superconducting tape, the flexible conductor has a flexible connection end on a side facing the carrier electrode, and the electrode rod drives the flexible connection end to approach the superconducting tape until it is electrically connected or moves away from the superconducting tape; The voltage terminal assembly includes a conductive spring and a collection terminal. The electrode rod is connected to the collection terminal through the conductive spring. The collection terminal is arranged on the side of the conductive spring facing the superconducting tape. The electrode rod is used to drive the collection terminal close to the superconducting tape until it is electrically connected or away from the superconducting tape.

2. The superconducting tape measurement electrode terminal according to claim 1, characterized in that: The current terminal assembly further includes a bracket, a spring unit and a pressure block unit, wherein the bracket is connected to the electrode rod, the spring unit is connected to the bracket, the pressure block unit is connected to the spring unit, and the flexible conductor at least covers a surface of the pressure block unit on one side facing the carrier electrode.

3. The superconducting tape measurement electrode terminal according to claim 2, characterized in that: The spring unit includes a plurality of springs distributed in an array, and the pressure block unit includes a plurality of pressure blocks distributed in an array. Both ends of each spring are respectively connected to the bracket and a pressure block, and each pressure block is connected to the flexible conductor.

4. The superconducting tape measurement electrode terminal according to claim 2, characterized in that: The carrier electrode is connected in parallel with the flexible conductor.

5. The superconducting tape measurement electrode terminal according to claim 2, characterized in that: The current terminal assembly further includes a driving unit, which is in driving connection with the electrode rod to drive the electrode rod to move toward or away from the superconducting tape.

6. The superconducting tape measurement electrode terminal according to claim 2, characterized in that: The voltage terminal assembly further includes an insulating bracket, which is connected to the electrode rod and the conductive spring respectively.

7. The superconducting tape measurement electrode terminal according to claim 6, characterized in that: The voltage terminal assembly further includes an insulating gasket, which is arranged opposite to the conductive spring.

8. The superconducting tape measurement electrode terminal according to claim 2, characterized in that: The cooling medium assembly includes a cooling medium shell and a cooling medium infusion pipe. The cooling medium shell has a hollow inner cavity, which accommodates the flexible conductor, the carrier electrode and the conductive spring. The inner cavity is connected to the cooling medium infusion pipe, and the cooling medium infusion pipe is used to introduce the cooling medium.

9. The superconducting tape measurement electrode terminal according to claim 8, characterized in that: The cooling medium shell has a cooling medium outlet and an electrode rod interface. The two cooling medium outlets are respectively opened on two opposite sides of the cooling medium shell for passing superconducting tape. The electrode rod interface is opened on the top surface of the cooling medium shell and is connected to the electrode rod.

10. A method for operating a superconducting tape measuring electrode terminal, characterized in that: Using the superconducting tape measuring electrode terminal according to any one of claims 1 to 9, comprising the following steps: delivering a cooling medium to the superconducting tape via a cooling medium assembly; The flexible conductor moves downward until the carrier electrode and the flexible conductor are respectively connected to two sides of the superconducting tape; inputting current into the superconducting tape through the carrier electrode and the flexible conductor; The conductive spring moves downward until the collection terminal is connected to the superconducting tape to collect the voltage signal; The flexible conductor and the conductive spring move upward, and the superconducting tape is driven. The above steps are repeated to test multiple areas of the superconducting tape.

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