Power loss test method for FEP78 double-center-pillar magnetic core

Abstract

A power loss test method for FEP78 double-center-pillar magnetic cores comprises the following steps: 1, according to FEP78 magnetic core products and the total height of the two products, it is ensured that no gap exists after the magnetic cores are paired; 2, copper wires with the diameter of 0.35 mm and different colors are adopted, double-wire parallel winding is conducted, winding is conducted on the double middle columns, and one circle is evenly wound on each middle column; winding a paper adhesive tape on the wound product; 3, connecting the copper wires with different colors into a test wire coil from inside to outside; 4, on an SY8218 test instrument, manually inputting various test parameters, and inputting the Le: 39mm and the Ae: 142.5 mm < 2 > of the product; ve: mm < 3 >; the weight of We is 82.5 g; n1: 4; n2: 4; 5, starting a test program of the instrument, and testing a power loss value of the product; the method has the beneficial effects that the method for testing the power loss of the FEP78 double-center-pillar magnetic core is standardized in the finished product inspection procedure, so that the power loss test of the FEP78 double-center-pillar magnetic core product is accurate, and the inspection problem of the FEP78 double-center-pillar magnetic core product in the power loss test is solved.

Description

Technical Field

[0001] The invention relates to the technical field of manganese-zinc ferrite powder production, in particular to a power loss testing method for a FEP78 double-middle-column magnetic core. Background Art

[0002] After the appearance inspection of manganese-zinc soft ferrite is completed, the electrical properties of the product, mainly the power loss, need to be tested. The power loss after the test is required to be accurate, meet the standard requirements, and have no fluctuations, abnormalities, etc.

[0003] FEP78 double-center-column magnetic core products, a single product has two center columns, and after pairing, it has four center columns, forming a long L-shaped product, which is mainly used in the construction of 5G network base stations, with deeper gaps and higher frequency of use;

[0004] The original detection method is to manually wind 10 turns of coil directly on the gap between the first and fourth middle pillars, test it on a 258 power consumption meter, add 124.3V voltage, and then read the power loss value on the instrument. In this way, the magnetic field distribution is not accurately positioned by roughly winding 10 turns between the first and fourth middle pillars, and the power loss measured is inaccurate;

[0005] In view of the above situation, it is necessary to improve the existing power test method so that it can adapt to the current needs of testing FEP78 double-center-column magnetic core products. Summary of the invention

[0006] To achieve the above object, the technical solution of the present invention is a power loss test method of a FEP78 double-middle-column magnetic core, comprising the following steps:

[0007] Step 1: According to the FEP78 core product, the total height of the two products should be within 0.1mm after pairing. Set up the tooling to ensure that there is no gap after the cores are paired;

[0008] Step 2: Use copper wires of different colors with a diameter of 0.35mm, wind them in pairs, and wind them on the double middle poles. Wind one circle evenly on each middle pole, thus ensuring the uniformity of the magnetic field distribution; wrap the wound product with paper tape;

[0009] Step 3: Connect copper wires of different colors to the test wire tray from the inside to the outside. In this example, the blue wire is connected to the first and second wiring pillars, and the red wire is connected to the third and fourth pillars.

[0010] Step 4: Manually input various test parameters on the SY8218 test instrument, and input the product's Le: 39mm, Ae: 142.5mm 2 ;Ve:mm 3 ;We:82.5g;N1:4;N2:4;

[0011] Step 5: Start the instrument's test program to test the power loss value of the product.

[0012] To further supplement the present technical solution, the tooling includes a base block and a clamping block arranged above the base block, a first support block is provided on one side of the base block, the upper surface of the first support block is against the lower surface of the clamping block, and a second support block is provided below the clamping block away from the first support block, the lower surface of the second support block is against the upper surface of the base block.

[0013] As a further supplement to the technical solution, a plurality of first center columns are provided on the base block, and the first center columns are fixedly mounted on the base block.

[0014] As a further supplement to the technical solution, the block is provided with a plurality of second center columns, and the second center columns are fixedly mounted on the block.

[0015] As a further supplement to the technical solution, the height difference between the first support block and the first center column, and between the second support block and the second center column after pairing is within 0.05 mm.

[0016] As a further supplement to the technical solution, the copper wires are red and blue.

[0017] As a further supplement to the technical solution, in step 2, an 8-shaped winding method is used for winding on the double center columns.

[0018] The beneficial effect is that by standardizing the power loss test method of the FEP78 double-center-column magnetic core in the finished product inspection process, the power loss test of the FEP78 double-center-column magnetic core product is accurate, solving the inspection problem of the FEP78 double-center-column magnetic core product in the power loss test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall installation structure of the clamping block, the second supporting block and the second center column of the present invention;

[0021] In the figure, 1, tooling; 2, base block; 3, clamping block; 4, first supporting block; 5, second supporting block; 6, first center column; 7, second center column. DETAILED DESCRIPTION

[0022] In order to make the technical solution more clear to those skilled in the art, Figure 1 -2 The technical solution of the present invention is described in detail:

[0023] A power loss test method for a FEP78 double-center-column magnetic core comprises the following steps:

[0024] Step 1: According to the FEP78 core product, the total height of the two products should be within 0.1mm after pairing. Set tooling 1 to ensure that there is no gap after the cores are paired;

[0025] Step 2: Use copper wires of different colors with a diameter of 0.35mm, wind them in pairs, and wind them on the double middle poles. Wind one circle evenly on each middle pole, thus ensuring the uniformity of the magnetic field distribution; wrap the wound product with paper tape;

[0026] Step 3: Connect copper wires of different colors to the test wire tray from the inside to the outside. In this example, the blue wire is connected to the first and second wiring pillars, and the red wire is connected to the third and fourth pillars.

[0027] Step 4: Manually input various test parameters on the SY8218 test instrument, and input the product's Le: 39mm, Ae: 142.5mm2; Ve: mm3; We: 82.5g; N1: 4; N2: 4;

[0028] Step 5: Start the instrument's test program to test the power loss value of the product.

[0029] Among them, the tooling 1 includes a base block 2 and a clamping block 3 arranged above the base block 2. A first support block 4 is provided on one side of the base block 2, and the upper surface of the first support block 4 is against the lower surface of the clamping block 3. A second support block 5 is provided below the clamping block 3 away from the first support block 4, and the lower surface of the second support block 5 is against the upper surface of the base block 2.

[0030] Wherein, a plurality of first center columns 6 are provided on the base block 2 , and the first center columns 6 are fixedly installed on the base block 2 .

[0031] The block 3 is provided with a plurality of second center columns 7 , and the second center columns 7 are fixedly mounted on the block 3 .

[0032] The heights of the first support block 4 and the first center column 6 , and the heights of the second support block 5 and the second center column 7 are within 0.05 mm after being matched.

[0033] Among them, copper wires are red and blue.

[0034] Among them, in step 2, the winding method of figure 8 is adopted on the double middle columns.

[0035] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A power loss test method for a FEP78 double-center-pillar magnetic core, characterized in that: The following steps are involved: Step 1: According to the FEP78 core product, the total height of the two products should be within 0.1mm after pairing. Set the tooling (1) to ensure that there is no gap after the cores are paired; Step 2: Use copper wires of different colors with a diameter of 0.35mm, wind them in pairs, and wind them on the double middle poles. Wind one circle evenly on each middle pole, thus ensuring the uniformity of the magnetic field distribution; wrap the wound product with paper tape; Step 3: Connect copper wires of different colors to the test wire tray from the inside to the outside. In this example, the blue wire is connected to the first and second wiring pillars, and the red wire is connected to the third and fourth pillars. Step 4: Manually input various test parameters on the SY8218 test instrument, and input the product's Le: 39mm, Ae: 142.5mm2; Ve: mm3; We: 82.5g; N1: 4; N2: 4; Step 5: Start the instrument's test program to test the power loss value of the product.

2. A power loss test method for a FEP78 double-middle-pillar magnetic core according to claim 1, characterized in that: The tooling (1) comprises a base block (2), a clamping block (3) arranged above the base block (2), a first support block (4) being arranged on one side of the base block (2), the upper surface of the first support block (4) being pressed against the lower surface of the clamping block (3), and a second support block (5) being arranged below the clamping block (3) and away from the first support block (4), the lower surface of the second support block (5) being pressed against the upper surface of the base block (2).

3. A power loss test method for a FEP78 double-middle-pillar magnetic core according to claim 2, characterized in that: A plurality of first middle columns (6) are provided on the base block (2), and the first middle columns (6) are fixedly mounted on the base block (2).

4. A power loss test method for a FEP78 double-middle-pillar magnetic core according to claim 3, characterized in that: The clamping block (3) is provided with a plurality of second middle columns (7), and the second middle columns (7) are fixedly mounted on the clamping block (3).

5. A power loss test method for a FEP78 double-center-pillar magnetic core according to claim 4, characterized in that: After being matched, the height difference between the first support block (4) and the first middle column (6), and between the second support block (5) and the second middle column (7) is within 0.05 mm.

6. A power loss test method for a FEP78 double-center-pillar magnetic core according to claim 1, characterized in that: The copper wires are in red and blue.

7. A power loss test method for a FEP78 double-middle-pillar magnetic core according to claim 1, characterized in that: In the step 2, the winding method of figure 8 is adopted on the double middle columns.

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