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Combined inductance coil

An inductive coil, combined technology, applied in the direction of transformer/inductor coil/winding/connection, transformer/inductor components, circuits, etc., can solve the problems of inconvenient adjustment of index parameters, decreased induction range, inconvenient use, etc. , to achieve the effect of improving application flexibility, changing characteristics and performance, and improving efficiency

Pending Publication Date: 2021-05-14
河南东陆高科实业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast, the inductance coil with a ferrite core can make a larger inductance and Q value in a small volume, but the induction range in the vertical direction of the coil axis will decrease, and the performance is also limited due to the increase of iron loss In addition, during the use of the inductance coil, the index parameters are not easy to adjust, and it is inconvenient to use

Method used

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  • Combined inductance coil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] see figure 1 , the embodiment of the present invention discloses a combined inductance coil, including a cored coil 6 evenly wound on the outer surface of a ferrite core 5, an air-cored coil 1 is placed outside the cored coil 6, and the The free end 2 of the inner ring of the air-core coil 1 is connected with the free end 7 of the outer ring of the cored coil 6, the free end of the outer ring of the air-core coil 1 is the first combined coil terminal 3, and the free end of the outer ring of the air-core coil 1 is the first combined coil terminal 3, and the free end of the outer ring of the cored coil 6 is The free end of the inner ring of the coil 6 protrudes outwards to form the second combined coil terminal 4 .

[0018] Wherein, the axial length of the air-core coil 1 is smaller than the axial length of the band-core coil 6, and the air-core coil 1 is placed in a position close to the upper end of the band-core coil 6, and the air-core coil 1 and the band The core co...

Embodiment 2

[0022] The embodiment of the present invention discloses a combined inductance coil, which includes a cored coil 6 evenly wound on the outer surface of a ferrite core 5, and an air-cored coil 1 is placed outside the cored coil 6, and the hollow The free end 2 of the inner ring of the core coil 1 is connected with the free end 7 of the outer ring of the cored coil 6, the free end of the outer ring of the air-core coil 1 is the first combined coil terminal 3, and the free end of the outer ring of the cored coil 1 is the first combined coil terminal 3, and the free end of the outer ring of the cored coil 6 The free end of the inner ring of 6 protrudes outwards to be the second combined coil terminal 4 .

[0023] Wherein, the axial length of the air-core coil 1 is equal to the axial length of the cored coil 6, and the air-core coil 1 and the cored coil 6 are coaxially parallel, that is, the vertical center axis of the air-core coil 1 is parallel to the cored coil 6. The vertical c...

Embodiment 3

[0027] The embodiment of the present invention discloses a combined inductance coil, which includes a cored coil 6 evenly wound on the outer surface of a ferrite core 5, and an air-cored coil 1 is placed outside the cored coil 6, and the hollow The free end 2 of the inner ring of the core coil 1 is connected with the free end 7 of the outer ring of the cored coil 6, the free end of the outer ring of the air-core coil 1 is the first combined coil terminal 3, and the free end of the outer ring of the cored coil 1 is the first combined coil terminal 3, and the free end of the outer ring of the cored coil 6 The free end of the inner ring of 6 protrudes outwards to be the second combined coil terminal 4 .

[0028] Wherein, the axial length of the air-core coil 1 is less than the axial length of the cored coil 6, and the air-core coil 1 is placed in the middle of the cored coil 6, and the air-core coil 1 and the cored coil The coils 6 are coaxially parallel, that is, the vertical ce...

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PUM

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Abstract

An embodiment of the invention relates to the technical field of inductance coils used in the radio frequency identification technology, in particular to a combined inductance coil, which comprises a cored coil evenly wound on the outer surface of a ferrite core, wherein a air-core coil sleeves the cored coil in a spaced mode, a free end of the inner ring of the air-core coil is connected with a free end of the outer ring of the cored coil, a free end of the outer ring of the air-core coil is a first combined coil terminal, and a free end of the inner ring of the cored coil extends outwards to form a second combined coil terminal. The combined inductance coil has the beneficial effects that: the inductance Q value can be improved, the efficiency is improved, the practicability can be improved, under the same overall performance parameter requirement, the combinedinductancecoil can be manufactured into a coil with a smaller size, the requirement for the application environment can be lowered, the application flexibility is improved, and the index parameters can be adjusted by adjusting the relative positions of the air-core coil and the cored coil.

Description

technical field [0001] The invention relates to the technical field of inductance coils used in radio frequency identification technology, in particular to a combined inductance coil. Background technique [0002] In radio frequency identification applications, the inductance coil is mostly used as an antenna to realize the induction and transmission of energy. The existing inductance coils mainly have two forms: air-core inductance coils and core inductance coils. The air-core inductance coil has a simple structure and can withstand a certain amount of power. However, in low-frequency RFID applications, the coil needs to be wound in a large volume to obtain large inductance and high Q value to obtain higher performance, and this is different from the size of the product itself. Conflicting requirements. In contrast, the inductance coil with a ferrite core can make a larger inductance and Q value in a small volume, but the induction range in the vertical direction of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F27/30
CPCH01F27/28H01F27/306
Inventor 郭中堂尹志超王坤
Owner 河南东陆高科实业股份有限公司