A heating device and a testing method for testing the Curie temperature of a magnetic core

Abstract

The present application relates to a heating device and a testing method for testing the Curie temperature of a magnetic core, and to the technical field of Curie temperature detection devices. The heating device comprises a heating box, wherein a resistance wire for heating the magnetic core is arranged in the heating box, and a box door is rotatably connected to one side of the heating box, and a detection board is arranged on the box door, and a plurality of metal terminals are arranged on the detection board, and the metal terminals extend to the side of the box door away from the heating box, and a plurality of fixings are arranged on the side of the metal terminals close to the heating box, and a coil is wound around the magnetic core, and one end of the coil wire in the length direction is detachably connected to the fixing, and a conductive part is installed on the detection board, and a connecting clip for clamping the coil wire is arranged on the conductive part, and the connecting clip is detachably connected to the other end in the length direction of the coil. The magnetic core is heated more evenly, the tested Curie temperature of the magnetic core is more accurate, and it is more convenient to obtain the Curie temperature of the magnetic core.

Description

Technical Field

[0001] The present application relates to the technical field of Curie temperature detection devices, and in particular to a heating device and a testing method for testing the Curie temperature of a magnetic core. Background Art

[0002] Magnetic cores are widely used in many electronic devices, such as inductors, transformers, etc.

[0003] The performance stability of the magnetic core directly affects the reliability and stability of the entire system. Since the magnetic core generates heat during operation, if the temperature is too high, it may exceed its Curie temperature, which will cause the magnetic properties of the core to drop sharply or even be completely lost. Therefore, the Curie temperature of the magnetic core needs to be tested before it leaves the factory.

[0004] At present, when testing the Curie temperature of a magnetic core, most people still use traditional heating equipment. The magnetic core is placed on a placement table of the heating equipment, and then the internal temperature of the equipment is increased to heat the magnetic core. The magnetic core placed on the placement table is heated unevenly, which will lead to inaccurate Curie temperature of the magnetic core in subsequent tests. There is a lack of equipment specifically for detecting the Curie temperature of magnetic cores. Summary of the invention

[0005] In order to solve the above problems, the present application provides a heating device and a testing method for testing the Curie temperature of a magnetic core.

[0006] In a first aspect, the present application provides a heating device for testing the Curie temperature of a magnetic core, which adopts the following technical solution:

[0007] A heating device for testing the Curie temperature of a magnetic core comprises a heating box, wherein a resistance wire for heating the magnetic core is arranged in the heating box, one side of the heating box is rotatably connected to a box door, a detection board is provided on the box door, a plurality of metal terminals are provided on the detection board, the metal terminals extend to a side of the box door away from the heating box, a plurality of fixing parts are provided on the side of the metal terminals close to the heating box, a coil is wound around the magnetic core, one end of the coil wire in the length direction is detachably connected to the fixing part, a conductive part is installed on the detection board, a connecting clip for clamping the coil wire is provided on the conductive part, and the connecting clip is detachably connected to the other end of the coil in the length direction.

[0008] Optionally, a support column is fixedly provided in the heating box, and the box door is rotatably connected to the outside of the support column. The conductive part is a conductive column. A plurality of connecting columns are arranged on the detection board. The connecting columns are located at both ends of the length direction of the conductive column. The conductive column is rotatably connected to the connecting column, and the connecting clips are all sleeved on the outside of the conductive column.

[0009] Optionally, the connecting clamp includes a convex clamping plate and a concave clamping plate, the convex clamping plate is provided with a clamping protrusion extending in the direction of the concave clamping plate, and the concave clamping plate is provided with a groove adapted to the clamping protrusion.

[0010] Optionally, a plurality of support bars are provided on the side of the heating box close to the door, and the plurality of support bars are horizontally arranged inside the heating box. The plurality of support bars correspond to the conductive columns one by one, and the height of the support bars is higher than the height of the corresponding conductive columns. When the door is closed, the connecting clamp abuts against the support bars.

[0011] Optionally, a plurality of transmission components are provided on the outside of the support column, and the plurality of transmission components correspond one-to-one to the conductive column. The transmission component includes a gear 1 provided on the support column, and the transmission component also includes a gear 2 rotatably connected to the box door, the gear 1 and the gear 2 are meshed with each other, a bevel gear 1 is coaxially fixedly connected above the gear 2, the conductive column extends to a place of the bevel gear, and a bevel gear 2 is provided at one end of the conductive column close to the bevel gear 1, and the bevel gear 2 is meshed with the bevel gear 1.

[0012] In a second aspect, the present application provides a method for testing the Curie temperature of a magnetic core, comprising the following steps:

[0013] S1: Sleeve one end of the coil in the length direction onto the fixing piece, and clamp the other end of the coil in the length direction with a connecting clip;

[0014] S2: Close the box door, turn the connecting clamp to a horizontal state, and straighten the coil;

[0015] S3: Operate the heating box to heat, and indirectly obtain the Curie temperature of the magnetic core by testing the inductance of the metal terminal away from the fixing part and comparing it with the magnetization curve.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. First, wind the wire extending from the magnetic core coil onto the fixing, and then use the fixing to clamp the wire, and then connect the other end of the coil to the installation clamp. After several coils are installed, close the box door; heat the heating box to heat several magnetic cores, and then indirectly obtain the Curie temperature of the magnetic core by testing the inductance of the metal terminal and comparing the magnetization curve. The magnetic core is heated more evenly, and the tested Curie temperature of the magnetic core is more accurate.

[0018] 2. After the box door is closed, the conductive column can be rotated to drive the connecting clamp to rotate, thereby straightening the coil wire and the magnetic core. At this time, the position of the magnetic core changes, and the magnetic core is in a state of facing the heating box, which can improve the uniformity of the heating of the magnetic core, thereby improving the accuracy of the heating of the magnetic core, and thereby improving the accuracy of the Curie temperature of the magnetic core obtained later;

[0019] 3. First place the coil wire in the groove of the concave clamping plate, and then operate the connecting clamp to clamp it. The clamping protrusion enters the groove, and then clamps the coil wire in the groove. The structure is simple and the coil wire is convenient to clamp;

[0020] 4. When the box door is closed, the connection clamp contacts the corresponding support bar. As the box door continues to close, the connection clamp gradually rotates from a vertical state to a horizontal state, thereby straightening the coil wire and the magnetic core. At this time, the position of the magnetic core changes, and the magnetic core is in a state facing the heating box, which can improve the uniformity of the heating of the magnetic core, thereby improving the accuracy of the heating of the magnetic core, and thereby improving the accuracy of the Curie temperature of the magnetic core obtained later;

[0021] 5. As the box door is closed, gear 2 rotates around gear 1, thereby driving bevel gear 1 below to rotate, thereby driving bevel gear 2 on the conductive column to rotate, thereby driving the conductive column to rotate, thereby driving a number of connecting clips to rotate, with a simple structure and convenient driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic diagram of the overall structure of a first embodiment of a heating device for testing the Curie temperature of a magnetic core.

[0023] Figure 2 The schematic diagram of the fixing member is highlighted in the first embodiment of a heating device for testing the Curie temperature of a magnetic core.

[0024] Figure 3 The present invention is a schematic diagram showing a box door in the first embodiment of a heating device for testing the Curie temperature of a magnetic core.

[0025] Figure 4 A schematic diagram of the overall structure of a second embodiment of a heating device for testing the Curie temperature of a magnetic core.

[0026] Figure 5 The schematic diagram of the support bar is highlighted in the second embodiment of the heating device for testing the Curie temperature of a magnetic core.

[0027] Figure 6 yes Figure 5 Enlarged schematic diagram of part A.

[0028] Figure 7 The present invention is a schematic diagram of the overall structure of a third embodiment of a heating device for testing the Curie temperature of a magnetic core.

[0029] Figure 8 yes Figure 7 Schematic diagram of the enlarged portion B.

[0030] Explanation of the reference numerals: 100, magnetic core; 1, heating box; 11, supporting column; 111, gear one; 12, supporting bar; 2, box door; 21, detection plate; 22, metal terminal; 23, connecting column; 24, gear two; 3, conductive part; 31, connecting clip; 32, convex clamping plate; 321, clamping convex; 33, concave clamping plate; 331, groove; 4, fixing part; 5, bevel gear one; 6, bevel gear two. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0032] In a first aspect, an embodiment of the present application discloses a heating device for testing the Curie temperature of a magnetic core.

[0033] Embodiment 1:

[0034] Reference Figure 1 and Figure 2 A heating device for testing the Curie temperature of a magnetic core comprises a heating box 1 in which a resistance wire for heating a magnetic core 100 is arranged.

[0035] A box door 2 for opening and closing the heating box 1 is rotatably connected to one side of the heating box 1. A detection plate 21 is provided on the box door 2. A plurality of metal terminals 22 are provided on the detection plate 21. The metal terminals 22 extend to a side of the box door 2 away from the heating box 1. A plurality of fixing parts 4 are provided on a side of the metal terminals 22 close to the heating box 1.

[0036] Reference Figure 2 and Figure 3 A coil is wound on the magnetic core 100, and one end of the coil wire in the length direction is detachably connected to the fixing member 4. A conductive member 3 is installed on the detection board 21, and a connecting clip 31 for clamping the coil wire is provided on the conductive member 3. The connecting clip 31 is detachably connected to the other end of the coil in the length direction.

[0037] Reference Figure 2 and Figure 3 , wind the wire extending from the coil of the magnetic core 100 around the fixing member 4, and then use the fixing member 4 to clamp the wire; the conductive member 3 is a conductive wire. Before heating the magnetic core 100, first lay the conductive wire on the detection board 21; then install the connecting clip 31 on the conductive wire, and clamp the other end of the wire of the coil of the magnetic core 100 on the connecting clip 31; complete the installation of the magnetic core 100.

[0038] By repeating the above steps, the installation of multiple magnetic cores 100 is completed, and then the box door 2 can be closed, and then the resistance wire is energized, and the heating box 1 is heated, and then the multiple magnetic cores 100 are heated. During the heating process, since both ends of the magnetic core 100 in the length direction are clamped, the magnetic core 100 is located in mid-air, thereby improving the heating effect of the magnetic core 100, so that the magnetic core 100 can be heated more evenly; by testing the metal terminal 22 (refer to Figure 1 )’s inductance, and the Curie temperature of the magnetic core 100 is indirectly obtained by comparing the magnetization curve.

[0039] The working principle of a heating device for testing the Curie temperature of a magnetic core in an embodiment of the present application is as follows: before installing the magnetic core 100, firstly wrap a coil around the outside of the magnetic core 100; arrange the conductive wire on the detection board 21, and when installing the magnetic core 100, wrap one end of the coil wire of the magnetic core 100 in the length direction around the fixing member 4, and then use the connecting clamp 31 to clamp the other end of the coil wire of the magnetic core 100 in the length direction onto the conductive wire to complete the installation of the magnetic core 100; then the box door 2 can be closed, and then the heating box 1 can be operated to heat, and a number of magnetic cores 100 are heated. During the heating process, since both ends of the length direction of the magnetic core 100 are clamped, the magnetic core 100 is located in mid-air at this time, thereby improving the heating effect on the magnetic core 100, so that the magnetic core 100 can be heated more evenly; by testing the inductance of the metal terminal 22, the Curie temperature of the magnetic core 100 is indirectly obtained by comparing the magnetization curve, and the Curie temperature of the magnetic core 100 is obtained more accurately.

[0040] Embodiment 2:

[0041] Reference Figure 4 and Figure 5 The difference between the second embodiment and the first embodiment is that the arrangement of the conductive member 3 is different.

[0042] Reference Figure 4 and Figure 5 A support column 11 is fixedly provided in the heating box 1, and the box door 2 is rotatably connected to the outside of the support column 11. The conductive member 3 is a conductive column. A plurality of connecting columns 23 are provided on the detection board 21. The connecting columns 23 are located at both ends of the length direction of the conductive column. The conductive column is rotatably connected to the connecting columns 23, and the connecting clips 31 are all sleeved on the outside of the conductive column.

[0043] The conductive pillars may be made of copper or other materials as long as they have good conductive effects.

[0044] Reference Figure 4 and Figure 5 When installing the magnetic core 100 , one end of the coil wire of the magnetic core 100 in the length direction is first connected to the fixing member 4 , and then the other end of the coil wire of the magnetic core 100 in the length direction is moved closer to the connecting clip 31 .

[0045] Reference Figure 5 and Figure 6 The connecting clamp 31 includes a convex clamping plate 32 and a concave clamping plate 33. The convex clamping plate 32 extends a clamping protrusion 321 in the direction of the concave clamping plate 33, and the concave clamping plate 33 is provided with a groove 331 adapted to the clamping protrusion 321; open the connecting clamp 31, and then put the coil wire of the magnetic core 100 into the interior of the groove 331, and then close the connecting clamp 31. At this time, the clamping protrusion 321 enters into the interior of the groove 331, and then clamps the coil wire in the groove 331. The structure is simple and the coil wire is convenient to clamp. The user is more convenient to clamp the coil wire of the magnetic core 100.

[0046] Reference Figure 4 and Figure 5 After installing several magnetic cores 100 one by one, the user can then close the box door 2; a plurality of support bars 12 are arranged on one side of the heating box 1 close to the box door 2, and the plurality of support bars 12 are horizontally arranged inside the heating box 1, and the plurality of support bars 12 correspond to the conductive columns one by one, and the height of the support bars 12 is higher than the height of the corresponding conductive columns. When the box door 2 is closed, the connecting clip 31 abuts against the supporting bar 12; as the box door 2 continues to close, the connecting clip 31 rotates under the action of the supporting bar 12, and the conductive column also rotates at this time.

[0047] Reference Figure 5 and Figure 6 The connecting clamp 31 gradually rotates from a vertical state to a horizontal state, thereby straightening the coil wire, and then straightening the magnetic core 100. At this time, the position of the magnetic core 100 changes, and the magnetic core 100 is in a state facing the heating box 1, which can improve the uniformity of heating the magnetic core 100, thereby improving the accuracy of heating the magnetic core 100, and thereby improving the accuracy of the Curie temperature of the magnetic core 100 obtained subsequently.

[0048] Embodiment three:

[0049] Reference Figure 7 and Figure 8 The difference between the third embodiment and the second embodiment is that the arrangement of the support column 11 is different.

[0050] Reference Figure 7 and Figure 8 A plurality of transmission components are arranged on the outside of the support column 11, and the plurality of transmission components correspond to the conductive columns one by one. The transmission component includes a gear 111 arranged on the support column 11, and the transmission component also includes a gear 24 rotatably connected to the box door 2, the gear 111 and the gear 24 are meshed with each other, a bevel gear 15 is coaxially fixedly connected above the gear 24, the conductive column extends to the bevel gear 5, and a bevel gear 26 is arranged on one end of the conductive column close to the bevel gear 15, and the bevel gear 26 is meshed with the bevel gear 15.

[0051] Reference Figure 7 and Figure 8 When installing the magnetic core 100, one end of the coil wire of the magnetic core 100 in the length direction is first connected to the fixing member 4, and the other end of the coil wire of the magnetic core 100 in the length direction is connected to the connecting clip 31; then the box door 2 can be closed; as the box door 2 rotates, the gear 2 24 rotates around the gear 1 111, thereby driving the bevel gear 1 5 below to rotate, thereby driving the bevel gear 2 6 on the conductive column to rotate, thereby driving the conductive column to rotate, thereby driving a number of connecting clips 31 to rotate in the direction close to the heating box 1, with a simple structure and convenient driving; the coil wire is gradually straightened, thereby straightening the magnetic core 100. At this time, the position of the magnetic core 100 changes, and the magnetic core 100 is in a state facing the heating box 1, which can improve the uniformity of heating the magnetic core 100, thereby improving the accuracy of heating the magnetic core 100, thereby improving the accuracy of the subsequent Curie temperature of the magnetic core 100.

[0052] In a second aspect, an embodiment of the present application discloses a method for testing the Curie temperature of a magnetic core, comprising the following steps:

[0053] S1: Sleeve one end of the coil in the length direction onto the fixing member 4, and clamp the other end of the coil in the length direction with the connecting clamp 31;

[0054] S2: Close the box door 2, rotate the connecting clamp 31 to a horizontal state, and straighten the coil;

[0055] S3: Operate the heating box 1 to heat, and indirectly obtain the Curie temperature of the magnetic core 100 by testing the inductance of the metal terminal 22 away from the fixing member 4 and comparing it with the magnetization curve.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heating device for testing the Curie temperature of a magnetic core, comprising a heating box (1), characterized in that: The heating box (1) is provided with a resistance wire for heating the magnetic core (100); one side of the heating box (1) is rotatably connected to a box door (2); a detection plate (21) is provided on the box door (2); a plurality of metal terminals (22) are provided on the detection plate (21); the metal terminals (22) extend to a side of the box door (2) away from the heating box (1); a plurality of fixing members (4) are provided on a side of the metal terminals (22) close to the heating box (1); a coil is wound around the magnetic core (100); one end of the coil wire in the length direction is detachably connected to the fixing member (4); a conductive member (3) is installed on the detection plate (21); a connecting clamp (31) for clamping the coil wire is provided on the conductive member (3); the connecting clamp (31) is detachably connected to the other end of the coil in the length direction; a support column (11) is fixedly provided in the heating box (1); the box door (2) is rotatably connected to the outside of the support column (11); The conductive member (3) is a conductive column. The detection plate (21) is provided with a plurality of connecting columns (23). The connecting columns (23) are located at both ends of the conductive column in the length direction. The conductive column is rotatably connected to the connecting columns (23). The connecting clamps (31) are sleeved on the outside of the conductive column. The connecting clamps (31) include a convex clamping plate (32) and a concave clamping plate (33). The convex clamping plate (32) extends toward the concave clamping plate (33) with a clamping convex (321). The concave clamping plate (33) is provided with a groove (331) adapted to the clamping convex (321). The heating box (1) is provided with a plurality of support bars (12) on one side close to the box door (2). The plurality of support bars (12) are horizontally arranged inside the heating box (1). The plurality of support bars (12) correspond to the conductive columns one by one. The height of the support bars (12) is higher than the height of the corresponding conductive columns. When the box door (2) is closed, the connecting clamps (31) abut against the support bars (12).

2. A heating device for testing the Curie temperature of a magnetic core, comprising a heating box (1), characterized in that: The heating box (1) is provided with a resistance wire for heating the magnetic core (100). A box door (2) is rotatably connected to one side of the heating box (1). A detection plate (21) is provided on the box door (2). A plurality of metal terminals (22) are provided on the detection plate (21). The metal terminals (22) extend to a side of the box door (2) away from the heating box (1). A plurality of fixing members (4) are provided on a side of the metal terminals (22) close to the heating box (1). Coils are wound around the magnetic core (100). The coil wires are connected to the heating box door (2). One end in the length direction is detachably connected to the fixing member (4); a conductive member (3) is installed on the detection plate (21); a connecting clamp (31) for clamping the coil wire is provided on the conductive member (3); the connecting clamp (31) is detachably connected to the other end in the length direction of the coil; a support column (11) is fixedly provided in the heating box (1); the box door (2) is rotatably connected to the outside of the support column (11); the conductive member (3) is a conductive column; a plurality of connecting columns (23) are provided on the detection plate (21); the connecting columns ( 23) are located at both ends of the conductive column in the length direction, the conductive column is rotatably connected to the connecting column (23), the connecting clamps (31) are sleeved on the outside of the conductive column, the connecting clamps (31) include a convex clamping plate (32) and a concave clamping plate (33), the convex clamping plate (32) extends in the direction of the concave clamping plate (33) with a clamping convex (321), the concave clamping plate (33) is provided with a groove (331) adapted to the clamping convex (321), the outside of the support column (11) is provided with a plurality of transmission components, and the plurality of transmission components are connected to the conductive column (11). The conductive posts correspond one to one, the transmission assembly includes a gear 1 (111) arranged on the support post (11), and the transmission assembly also includes a gear 2 (24) rotatably connected to the box door (2), the gear 1 (111) and the gear 2 (24) are meshed with each other, a bevel gear 1 (5) is coaxially fixedly connected above the gear 2 (24), the conductive post extends to the bevel gear 1 (5), and a bevel gear 2 (6) is arranged at one end of the conductive post close to the bevel gear 1 (5), and the bevel gear 2 (6) and the bevel gear 1 (5) are meshed with each other.

3. A method for testing the Curie temperature of a magnetic core, characterized in that: Testing a magnetic core using a heating device for testing the Curie temperature of a magnetic core as described in any one of claims 1-2 comprises the following steps: S1: Sleeve one end of the coil in the length direction onto the fixing member (4), and clamp the other end of the coil in the length direction using a connecting clamp (31); S2: The box door (2) is closed, and the connecting clamp (31) is rotated to a horizontal state to straighten the coil; S3: operating the heating box (1) to heat, and indirectly obtaining the Curie temperature of the magnetic core (100) by measuring the inductance of the metal terminal (22) away from the fixing member (4) and comparing the magnetization curve.

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