Magnetic measurement clamp, magnetic measurement device and magnetic performance detection system

Abstract

The utility model provides a magnetic measurement fixture, a magnetic measurement device and a magnetic performance detection system, the magnetic measurement fixture comprises a first clamping piece and a second clamping piece which are respectively arranged at two sides, the inner side of the first clamping piece is provided with at least two conductive contacts A, and the inner side of the second clamping piece is provided with at least two conductive contacts B; a test station used for placing a magnetic core is formed between the first clamping piece and the second clamping piece, and the conductive contacts A and the conductive contacts B are arranged on the two sides of the test station respectively. Through the structural arrangement of the magnetic measurement clamp, the magnetic measurement clamp with the structure is effectively matched with a magnetic connecting piece to serve as a magnetic measurement device, a magnetic core placed in a test station can simply form a coil loop, and the coil lead is fixedly connected with the test device through the arrangement of the fixed connection relation between the led-out coil lead and the test device. Therefore, the magnetic performance detection of the magnetic core can be simply and efficiently completed, the repeated disassembly, assembly and winding of the coil in the magnetic performance detection process of the magnetic core can be avoided, and the magnetic performance detection process is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic core detection, and specifically, to a magnetic measurement fixture, a magnetic measurement device and a magnetic property detection system. Background Art

[0002] Inductor components are widely used in the field of power electronics technology. Inductive elements are often used in inductor design. Therefore, during the manufacturing process of magnetic cores, their inductance characteristics and impedance characteristics need to be tested. When testing the inductance, a single-turn or multi-turn coil is wound around the magnetic core, and then the leads are connected to the terminals of the detection device for inductance measurement. In the actual production and manufacturing of magnetic cores, due to many processes and a large number of magnetic cores being sampled at each link, for each sampled magnetic core, a coil needs to be wound for inductance testing. At the same time, after the multi-turn coil is wound, it is necessary to further confirm the number of turns to avoid misjudgment of the test results caused by incorrect number of turns. Also, after the test, the coil needs to be removed; the winding and removal of the coil take a lot of time, seriously affecting the inspection efficiency of the inductance, increasing the labor and time costs, and at the same time, the use of a large number of coils also increases the material cost. Magnetic core materials are stress-sensitive. When winding and unwinding wires in each process, the magnetic core will be affected by external stress, thus affecting the inductance test results of the magnetic core.

[0003] Soft magnetic materials have excellent magnetic properties and are widely used in fields such as information technology, aerospace, and new energy vehicles. The magnetic property test of soft magnetic materials is based on the principle of electromagnetic induction. For specimens with a closed magnetic circuit structure such as ring-shaped, rectangular, CD-shaped, etc., a magnetization coil (primary coil) N1 and a measurement coil (secondary coil) N2 are wound around the specimen to form an open-circuit transformer connected to a test device for static / dynamic magnetic parameter tests, mainly including: initial magnetic permeability, coercive force, saturation magnetic induction intensity, remanent magnetization intensity, magnetic hysteresis loop, magnetization curve, etc. Before testing the specimen, two sets of coils need to be wound. When the number of specimens is small, they are wound manually. When the number of specimens is large, they can be wound by machine, but the accuracy of the number of turns of the coil needs to be further confirmed manually. For the inspection of a large number of samples, the efficiency is very low; there are two sets of leads for the two sets of coils of the specimen to be connected to the test equipment, and during long-term operation, there is a risk of cross-wiring of the primary / secondary leads, resulting in test errors and instrument damage. After the specimen is tested, the coil needs to be removed, which again increases the test time and reduces the inspection efficiency. Soft magnetic materials are stress-sensitive. When winding and unwinding wires, the specimen will be affected by external forces, thus affecting the accuracy of the test results. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a magnetic measurement fixture, a magnetic measurement device and a magnetic property detection system for application to overcome the deficiencies of the prior art.

[0005] Magnetic measurement fixture, which includes: a first clamping member and a second clamping member provided on both sides. At least two A conductive contacts are provided on the inner side of the first clamping member, and at least two B conductive contacts are provided on the inner side of the second clamping member. A test station for placing a magnetic core is formed between the first clamping member and the second clamping member. Each of the A conductive contacts and the B conductive contacts are provided on both sides of the test station; wherein, among each of the A conductive contacts and / or the B conductive contacts, at least two ends of the coil leads are connected and led out.

[0006] Further, each of the A conductive contacts and the B conductive contacts are arranged in one-to-one correspondence on both sides of the test station; and / or, each of the A conductive contacts and the B conductive contacts are evenly arranged in terms of quantity on both sides of the test station; and / or, each of the A conductive contacts and the B conductive contacts are arranged at equal distances along a straight line direction on both sides of the test station.

[0007] Further, each of the A conductive contacts is detachably installable relative to the first clamping member; and / or, each of the B conductive contacts is detachably installable relative to the second clamping member.

[0008] Further, several connecting lines are connected between each of the conductive contacts and the coil leads are led out; each of the conductive contacts is only connected to one end of the connecting line or the coil lead.

[0009] Further, each of the coil leads and each of the connecting lines are connected and arranged at the lower side position of the first clamping member and the second clamping member; between the first clamping member and the second clamping member, a clamping driving device for driving them to contact and separate from each other is connected.

[0010] Further, the coil leads include a first coil lead and a second coil lead led out from both ends; and / or, the led-out coil leads include grouped primary coil leads and secondary coil leads, and the number of leads in each group of the primary coil leads and the secondary coil leads is two.

[0011] Magnetic measurement device, which applies the magnetic measurement fixture as described above, and further includes a magnetic connection member; when a magnetic core with a closed magnetic circuit is fixedly placed into the magnetic measurement fixture, the magnetic connection member passes through the closed magnetic circuit of the magnetic core and is clamped in the magnetic measurement fixture. The magnetic connection member is electrically contacted with each of the conductive contacts, and a coil circuit surrounding the magnetic core is formed among the magnetic connection member, each of the conductive contacts, and the led-out coil leads.

[0012] Further, the magnetic connector includes a penetrating rod, and a conductive layer is disposed on the outer periphery of the penetrating rod; the conductive layer includes a first conductive member and a second conductive member, the first conductive member is arranged along the outer side position of the penetrating rod, and the second conductive member is arranged at the outer side position of the first conductive member; a stepped shape is formed among the second conductive member, the first conductive member and the penetrating rod; each of the A conductive contacts and the B conductive contacts is arranged in a stepped shape to adapt to the positions of the second conductive member and the first conductive member.

[0013] Further, the penetrating rod is in the shape of a long strip plate, and it has pressing end faces on both sides. The first conductive member includes a first conductive thin sheet in the shape of a long strip, and the second conductive member includes a second conductive thin sheet in the shape of a long strip. The first conductive thin sheet, the second conductive thin sheet and the penetrating rod are arranged in sequence, and an insulating layer is provided between the first conductive thin sheet and the second conductive thin sheet and / or between the second conductive thin sheet and the penetrating rod.

[0014] A magnetic property detection system, which includes the magnetic measurement device as described above, and further includes a test device; the led-out coil lead wires are connected to the test device.

[0015] The beneficial effects of the present utility model are as follows:

[0016] Through the structural arrangement of a magnetic measurement fixture, the present utility model effectively enables the magnetic measurement fixture of this structure to cooperate with a magnetic connector as a magnetic measurement device, and can simply form a coil loop for a magnetic core placed in the test station therein. By setting the fixed connection relationship between the led-out coil lead wires and the test device, the magnetic property detection of the magnetic core can be simply and efficiently completed, and the repeated disassembly, installation and winding of the coil during the magnetic property detection process of the magnetic core can be avoided, and the magnetic property detection process is streamlined. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the structural arrangement of the magnetic measurement fixture according to Embodiment 1 of the present utility model;

[0018] Figure 2 It is a schematic diagram of the wiring layout of the magnetic measurement fixture according to Embodiment 1 of the present utility model;

[0019] Figure 3 It is a schematic diagram of the wiring layout of the magnetic measurement fixture according to Embodiment 2 of the present utility model;

[0020] Figure 4 It is a schematic diagram of the structural arrangement of the magnetic measurement fixture according to Embodiment 3 of the present utility model;

[0021] Figure 5 It is a schematic diagram of the wiring layout of the magnetic measurement fixture according to Embodiment 3 of the present utility model;

[0022] Figure 6Schematic wiring layout diagram of the magnetic measurement fixture for Embodiment 4 of the present utility model.

[0023] Reference numerals:

[0024] First clamping member 1, A installation station 11, second clamping member 2, B installation station 21,

[0025] Conductive contacts 3, A1 conductive contact 311, A2 conductive contact 312, A3 conductive contact 313, A4 conductive contact 314, B1 conductive contact 321, B2 conductive contact 322, B3 conductive contact 323, B4 conductive contact 324,

[0026] Piercing rod 4, conductive layer 41, first conductive member 411, second conductive member 412,

[0027] Coil leads 5, first coil lead 51, second coil lead 52, first primary coil lead 53, second primary coil lead 54, first secondary coil lead 55, second secondary coil lead 56,

[0028] Magnetic core 6, test station 60,

[0029] Connecting wires 7, first connecting wire 71, second connecting wire 72, third connecting wire 73. Detailed implementation manners

[0030] In order to make the technical solutions, objectives and advantages of the present utility model clearer and more understandable, the present utility model will be further explained and described below with reference to the accompanying drawings and embodiments.

[0031] As Figures 1 to 6 shown, the magnetic property detection system of the present utility model includes a test device for detecting magnetic property parameters of a magnetic core, and further includes a magnetic measurement device provided by combining a magnetic measurement fixture and a magnetic connector. A plurality of conductive contacts are provided in the magnetic measurement fixture, and each conductive contact is connected to lead out a coil lead to be connected to the test device. A magnetic core with a closed magnetic circuit is fixedly placed into the magnetic measurement fixture, and the magnetic connector penetrates into the closed magnetic circuit of the magnetic core, so that the magnetic connector forms electrical contact with each of the conductive contacts. Then, a coil circuit surrounding the magnetic core is formed among the magnetic connector, each of the conductive contacts and the led-out coil leads.

[0032] Start the test device, so that electromagnetic induction is generated between the magnetic core and the coil circuit, and the magnetic property parameters of the magnetic core can be detected.

[0033] Generally, the magnetic core is arranged in a ring shape, specifically preferably a circular ring shape, a racetrack ring shape, etc., so that the magnetic core structure forms a closed magnetic circuit.

[0034] In the magnetic measurement fixture, its structure includes: a first clamping member and a second clamping member disposed on both sides. At least two A conductive contacts are provided on the inner side of the first clamping member, and at least two B conductive contacts are provided on the inner side of the second clamping member. A test station for placing the magnetic core is formed between the first clamping member and the second clamping member. Each of the A conductive contacts and the B conductive contacts are disposed on both sides of the test station; wherein, among each of the A conductive contacts and / or the B conductive contacts, at least two ends of the coil leads are connected and led out.

[0035] Each of the A conductive contacts and the B conductive contacts are arranged in one-to-one correspondence on both sides of the test station; each of the A conductive contacts and the B conductive contacts are evenly distributed in terms of quantity on both sides of the test station; and each of the A conductive contacts and the B conductive contacts are equidistantly arranged along a straight line direction on both sides of the test station.

[0036] Preferably, each of the conductive contacts is detachably arranged in the magnetic measurement fixture, that is, the number of conductive contacts can be flexibly adjusted in this way, without manual winding, and the application is fast and convenient. In the application of the structure of this magnetic measurement fixture, an A installation station 11 for installing each of the A conductive contacts is provided on the first clamping member, and each of the A conductive contacts is detachably installed on each of the A installation stations 11; and a B installation station 21 for installing each of the B conductive contacts is provided on the second clamping member, and each of the B conductive contacts is detachably installed on each of the B installation stations 21.

[0037] In the magnetic connecting member, its structure includes a penetrating rod in the shape of a long rod, and a conductive layer is provided on the outer periphery of the penetrating rod; by penetrating the penetrating rod into the inner side of the ring of the magnetic core, and then making the external conductive layer contact with each of the conductive contacts in the first clamping member and the second clamping member on both sides, the application setting requirements of the coil circuit can be met.

[0038] When the number of each of the A conductive contacts and the B conductive contacts is greater than or equal to 4 and symmetrically arranged, in the magnetic connecting member, the conductive layer 41 includes a first conductive member 411 and a second conductive member 412. The first conductive member 411 is arranged along the outer side position of the penetrating rod 4, and the second conductive member 412 is arranged at the outer side position of the first conductive member 411; a stepped shape is formed between the second conductive member 412, the first conductive member 411 and the penetrating rod 4; each of the A conductive contacts and the B conductive contacts are arranged in a stepped shape to adapt to the positions of the second conductive member 412 and the first conductive member 411. The clamping and matching relationship between the stepped conductive contacts 3 and the conductive layer 41 has the characteristic of stable clamping, ensuring good electrical contact effect.

[0039] The penetrating rod 4 is in the shape of a long strip plate and has pressing end faces on both sides. The first conductive member 411 includes a first conductive thin sheet in the shape of a long strip, and the second conductive member 412 includes a second conductive thin sheet in the shape of a long strip. The first conductive thin sheet, the second conductive thin sheet, and the penetrating rod 4 are arranged in sequence. Insulating layers are provided between the first conductive thin sheet and the second conductive thin sheet and between the second conductive thin sheet and the penetrating rod 4.

[0040] Embodiment 1:

[0041] As Figure 1 and Figure 2 shown, for an inductance detection test application of an inductance magnetic core, in order to obtain its inductance test parameters: inductance (L), capacitance (C), resistance (R), impedance (Z), etc.; then the following application is set in this embodiment:

[0042] In the application of the magnetic measurement fixture, the A conductive contact includes A1 conductive contacts 311, A2 conductive contacts 312, A3 conductive contacts 313, and A4 conductive contacts 314 sequentially arranged inside the first clamp 1; the B conductive contact includes B1 conductive contacts 321, B2 conductive contacts 322, B3 conductive contacts 323, and B4 conductive contacts 324 arranged on one side inside the second clamp 2; the test station 60 is located at the central position between the A2 conductive contacts 312, A3 conductive contacts 313, B2 conductive contacts 322, and B3 conductive contacts 323.

[0043] The coil leads 5 are led out at both ends. The coil leads 5 at both ends include a first coil lead 51 connected to one end of the A1 conductive contact 311 and a second coil lead 52 connected to the other end of the A2 conductive contact 323. A plurality of connecting lines 7 are also connected between the conductive contacts 3; each of the conductive contacts 3 is only connected to one end of the connecting line 7 or the coil lead 5. Specifically, the A3 conductive contact 313 is connected to a first connecting line 71, the other end of the first connecting line 71 is connected to the B3 conductive contact 323, the A4 conductive contact 314 is connected to a second connecting line 72, the other end of the second connecting line 72 is connected to the B1 conductive contact 321, and the B2 conductive contact 322 is connected to a third connecting line 73; the other end of the third connecting line 73 is connected to the B4 conductive contact 324.

[0044] The electrical connection layout of each of the above conductive contacts 3 and the coil leads 5 (including the first coil lead 51 and the second coil lead 52) provided at both ends can effectively place the magnetic core 6 into the test station 60 and enable the first clamp 1 and the second clamp 2 to clamp the through-rod 4. When this occurs, a coil circuit surrounding the magnetic core 6 is formed among the through-rod 4 with the conductive layer 41, each of the A conductive contacts and B conductive contacts, each connection wire 7 (including the first to third connection wires), and the coil leads 5 at both ends. Among them, a conductive circuit for setting the number of coil turns is formed among each conductive contact 3, each connection wire 7 connected to each conductive contact 3, and the through-rod 4 with the conductive layer 41. In the conductive circuit setting of this embodiment, the number of coil turns is 4 turns.

[0045] When batch testing of the magnetic core 6 is required, multiple magnetic cores 6 are threaded onto the through-rod 4, and the magnetic cores 6 are arranged in sequence towards the test station 60.

[0046] After the inductance of the previous magnetic core 6 is detected, the first clamp 1 and the second clamp 2 are loosened from the through-rod 4, allowing the detected magnetic core 6 to move out from one end of the through-rod 4. Then, the next magnetic core 6 is placed into the test station 60, and the next magnetic core 6 can be prepared for inductance detection.

[0047] The test device is started to cause electromagnetic induction in the next magnetic core 6, so as to perform inductance detection on the next magnetic core 6 again; the above steps are repeatedly executed to perform inductance detection applications for multiple magnetic cores 6.

[0048] During this batch testing process, each time a test is performed, only by fully executing processes such as loosening the fixture, placing the magnetic core 6 and clamping the fixture, performing the test, stopping the test and loosening the fixture, and then placing the next magnetic core 6 and clamping the fixture, the inductance detection applications for multiple magnetic cores 6 can be simply completed.

[0049] Preferably, the coil leads 5 at both ends and each connection wire 7 are arranged at the lower side position of the first clamp 1 and the second clamp 2, so as to facilitate the replacement operation of the magnetic core 6 by the operator on the upper side of the magnetic measurement fixture.

[0050] Embodiment 2:

[0051] Based on the application principle of the above Embodiment 1, when the number of coil turns of the conductive circuit needs to be changed and adjusted, the setting application of the magnetic measurement fixture is further described as follows:

[0052] When the control of the number of turns of the coil needs to be changed, based on the structural setting that each conductive contact 3 can be assembled and disassembled on the first clip 1 and the second clip 2, it can meet the actual needs. By adjusting the connection relationship and / or quantity relationship of the conductive contacts 3 of each belt connecting wire 7 or the lead-out coil lead 5, the number of turns of the coil in the conductive loop can be adjusted.

[0053] As Figure 3 shown, by canceling the setting of the connecting wire 7 and leading out the coil leads 5 at both ends from the conductive contacts 3 on both sides, an application solution of a conductive loop with 1 turn of the coil can be obtained.

[0054] Embodiment 3:

[0055] As Figure 4 and Figure 5 shown, for the magnetic property detection and testing application of a soft magnetic core, in order to obtain its detection and testing parameters including those obtained from DC testing: coercive force (Hc), saturation magnetic induction intensity (Bs), remanent magnetic induction intensity (Br), initial magnetic permeability (μi), maximum magnetic permeability (μm), etc.; and those obtained from AC testing: iron loss (Ps), Hc under specific conditions, etc.; then the application of this embodiment is set as follows:

[0056] In the magnetic measurement fixture, the A conductive contacts include A1 conductive contact 311, A2 conductive contact 312, A3 conductive contact 313, and A4 conductive contact 314 arranged in sequence on the inner side of the first clip 1; the B conductive contacts include B1 conductive contact 321, B2 conductive contact 322, B3 conductive contact 323, and B4 conductive contact 324 arranged on one side of the inner side of the second clip 2; the test station 60 is located at the central position between the A2 conductive contact 312, A3 conductive contact 313, B2 conductive contact 322, and B3 conductive contact 323.

[0057] The led-out coil leads 5 include grouped primary coil leads and secondary coil leads, and the number of leads in each group of primary coil leads and secondary coil leads is two. The A1 conductive contact 311 is connected to the first primary coil lead 53, the A2 conductive contact 312 is connected to the first secondary coil lead 55, the A3 conductive contact 313 is connected to the second secondary coil lead 56, and the first secondary coil lead 55 and the second secondary coil lead 56 are the grouped secondary coil leads. The A4 conductive contact 314 is connected to the first connecting wire 71, the other end of the first connecting wire 71 is connected to the B1 conductive contact 321, the B2 conductive contact 322 is connected to the second connecting wire 72, the other end of the second connecting wire 72 is connected to the B4 conductive contact 324, and the B3 conductive contact 323 is connected to the second primary coil lead 54; the first primary coil lead 53 and the second primary coil lead 54 are the grouped primary coil leads.

[0058] The electrical connection layout of the above conductive contacts 3 with the primary coil leads, secondary coil leads, and connecting wires 7 can effectively place the magnetic core 6 into the test station 60 and enable the first clamp 1 and the second clamp 2 to clamp the through-rod 4. When the through-rod 4 with the conductive layer 41, each of the A conductive contacts and B conductive contacts, the first connecting wire 71, the second connecting wire 72, and the led-out first primary coil lead 53 and the second primary coil lead 54, the first secondary coil lead 55, and the second secondary coil lead 56 form a coil loop around the magnetic core 6. Among them, a conductive loop is formed among each conductive contact 3, the first connecting wire 71, the second connecting wire 72 connected to each conductive contact 3, and the through-rod 4 with the conductive layer 41. In the setting of this conductive loop, the coil turn ratio of the secondary coil to the primary coil in the above connection structure scheme is 1:3.

[0059] Similarly, when batch testing of the magnetic core 6 is required, a plurality of magnetic cores 6 are threaded onto the through-rod 4, and the magnetic cores 6 are arranged in sequence toward the test station 60.

[0060] After the magnetic properties of the previous magnetic core 6 are detected, the first clamp 1 and the second clamp 2 are loosened from the through-rod 4, so that the detected magnetic core 6 is removed from one end of the through-rod 4; then the next magnetic core 6 is placed into the test station 60, and the next magnetic core 6 can be prepared for magnetic property detection. The test device is started to cause electromagnetic induction in the next magnetic core 6, so as to perform magnetic property detection on the next magnetic core 6; the above steps are repeatedly executed to perform magnetic property detection applications on multiple magnetic cores 6.

[0061] Example 4:

[0062] Based on the application principle of the above Example 3, when the coil turn ratio of the conductive loop needs to be changed and adjusted, the application situation of the magnetic measurement fixture is further described:

[0063] When the change control of the coil turn ratio is required, based on the structural setting that each conductive contact 3 can be assembled and disassembled on the first clamp 1 and the second clamp 2, the position of each conductive contact 3 can be directly adjusted to adjust the lead-out relationship and the organizational setting relationship of the grouped primary coil leads 5, secondary coil leads 6, and each connecting wire 7, and the adjustment of the coil turn ratio can be simply realized.

[0064] As Figure 6 shown in the application of the magnetic measurement fixture structure, by changing the organizational relationship of the conductive contacts 3, the primary coil leads, the secondary coil leads, and each connecting wire 7, a magnetic measurement fixture setting scheme with a coil turn ratio of 2:2 for the primary coil and the secondary coil is provided.

[0065] Embodiment 5:

[0066] As a preferred implementation, based on the inductance detection test application of the inductive magnetic core and the magnetic property detection test application of the soft magnetic core in the above embodiments; the first coil lead 51 and the second coil lead 52 at both ends can be led out by the magnetic measurement fixture, and at the same time, two primary coil leads and two secondary coil leads are led out, so as to connect the first coil lead 51 and the second coil lead 52 at both ends to the detection device for inductance detection, and connect the led-out group of primary coil leads and secondary coil leads to the detection device for magnetic property detection, thereby simultaneously performing inductance detection and magnetic property detection on the magnetic core 6.

[0067] In the application of this embodiment, each of the conductive contacts 3 is not limited to being connected to one end connection line 7 or the coil lead 5. In the connection of the conductive contacts 3, there can be an overlapping connection relationship between one connection line 7 and another connection line 7 or the coil lead 5.

[0068] Alternatively, correspondingly, maintaining that each of the conductive contacts 3 is limited to being connected to one end connection line 7 or the coil lead 5, under the structural application of the first clamping member 1 and the second clamping member 2 in the same set of magnetic measurement fixtures, the coil loop formed by combining inductance detection and magnetic property detection is arranged in cooperation with the same magnetic connection member.

[0069] The above are only the preferred implementation manners of the present utility model. For those skilled in the art of this technology, without departing from the implementation principle of the present utility model, the above embodiments can still be modified, and the corresponding modification schemes should also be regarded as the protection scope of the present utility model.

Claims

1. Magnetic measurement fixture, characterized in that, Comprising: A first clamping member and a second clamping member disposed on both sides, at least two A conductive contacts are disposed inside the first clamping member, at least two B conductive contacts are disposed inside the second clamping member, a test station for placing a magnetic core is formed between the first clamping member and the second clamping member, and each of the A conductive contacts and the B conductive contacts are disposed on both sides of the test station; Wherein, among each of the A conductive contacts and / or the B conductive contacts, at least two coil leads are connected and led out.

2. The magnetic measurement fixture according to claim 1, characterized in that, Each of the A conductive contacts and the B conductive contacts are arranged in one-to-one correspondence on both sides of the test station; and / or, each of the A conductive contacts and the B conductive contacts are evenly divided and arranged on both sides of the test station; and / or, each of the A conductive contacts and the B conductive contacts are arranged at equal distances along a straight line direction on both sides of the test station.

3. The magnetic measurement fixture according to claim 1, wherein Each of the A conductive contacts is detachably installable relative to the first clamping member; and / or, each of the B conductive contacts is detachably installable relative to the second clamping member.

4. The magnetic measurement fixture according to claim 1, wherein, Each of the conductive contacts is connected by a plurality of connecting wires and the coil leads are led out; each of the conductive contacts is only connected to one end of the connecting wire or the coil lead.

5. The magnetic measurement fixture according to claim 4, wherein Each of the coil leads and each of the connecting wires are connected and arranged at the lower side position of the first clamping member and the second clamping member; between the first clamping member and the second clamping member, a clamping driving device for driving them to abut and separate from each other is connected.

6. The magnetic measurement fixture according to any one of claims 1 to 5, characterized in that, The coil leads include a first coil lead and a second coil lead led out from both ends; and / or, the led-out coil leads include grouped primary coil leads and secondary coil leads, and the number of leads in each group of the primary coil leads and the secondary coil leads is two.

7. Magnetic measuring device, characterized in that, Applying the magnetic measurement fixture according to any one of claims 1 to 6, further comprising a magnetic connector; when a magnetic core with a closed magnetic circuit is fixedly placed into the magnetic measurement fixture, the magnetic connector passes through the closed magnetic circuit of the magnetic core and is clamped in the magnetic measurement fixture, the magnetic connector is in electrical contact with each of the conductive contacts, and a coil circuit surrounding the magnetic core is formed among the magnetic connector, each of the conductive contacts, and the led-out coil leads.

8. The magnetic measurement device according to claim 7, characterized in that, The magnetic connector includes a penetrating rod, and a conductive layer is disposed on the outer periphery of the penetrating rod; the conductive layer includes a first conductive member and a second conductive member, the first conductive member is arranged along the outer side position of the penetrating rod, and the second conductive member is arranged at the outer side position of the first conductive member; a stepped shape is formed among the second conductive member, the first conductive member, and the penetrating rod; each of the A conductive contacts and the B conductive contacts are arranged in a stepped shape to adapt to the positions of the second conductive member and the first conductive member.

9. The magnetic measurement device according to claim 8, characterized in that, The penetrating rod is in the shape of a long strip plate, and it has pressing end faces on both sides, the first conductive member includes a first conductive thin sheet in the shape of a long strip, the second conductive member includes a second conductive thin sheet in the shape of a long strip, the first conductive thin sheet, the second conductive thin sheet, and the penetrating rod are arranged in sequence, and an insulating layer is disposed between the first conductive thin sheet and the second conductive thin sheet and / or between the second conductive thin sheet and the penetrating rod.

10. Magnetic property detection system, characterized in that, Including the magnetic measurement device according to any one of claims 7 to 9, further comprising a test device; the led-out coil leads are connected to the test device.

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