CN-122003726-A - Magnetic element

CN122003726ACN 122003726 ACN122003726 ACN 122003726ACN-122003726-A

Abstract

The magnetic element according to an embodiment may include a core unit including a first core and a second core disposed to face the first core in a first direction, a bobbin unit at least partially disposed in the core unit, and a coil unit including an upper coil and a lower coil disposed in the bobbin unit, wherein the upper coil and the lower coil are disposed spaced apart from each other in the first direction.

Inventors

JIANG YINXI
Yu Xuanying
LI XIANGYUAN
YIN XIUGUANG

Assignees

LG伊诺特有限公司

Dates

Publication Date: 20260508
Application Date: 20240806
Priority Date: 20230807

Claims (10)

1. A magnetic element, comprising: A core unit including a first core and a second core disposed opposite to the first core in a first direction; a bobbin unit at least partially disposed in the core unit, and A coil unit including an upper coil and a lower coil provided on the bobbin unit, wherein, The upper coil and the lower coil are disposed spaced apart from each other in the first direction.
2. The magnetic element of claim 1 wherein each of the first and second cores comprises: A first body portion; A first outer leg portion protruding from one end of the first body portion in the first direction and extending in a second direction intersecting the first direction; a second outer leg portion protruding from the other end of the first body portion in the first direction and extending in the second direction, and A center leg protruding from between the first outer leg and the second outer leg in the first direction and extending in the second direction.
3. The magnetic element according to claim 2, wherein, At least a portion of the upper coil is disposed between each of the first and second outer legs of the first core and the central leg, and At least a portion of the lower coil is disposed between each of the first and second outer legs of the second core and the central leg.
4. The magnetic element of claim 2, wherein the bobbin unit comprises: a second body portion on which the upper coil and the lower coil are disposed to be spaced apart from each other in the first direction; A first upper protrusion protruding from an upper end of the second body portion in a third direction intersecting each of the first direction and the second direction, and A first lower protrusion protruding from a lower end of the second body portion in the third direction.
5. The magnetic element of claim 4 wherein the first upper protrusion comprises: 1-1 st upper projection disposed between the first outer leg and the central leg of the first core, and An upper 1-2 projection disposed between the second outer leg and the central leg of the first core, the upper 1-2 projection being located on an opposite side of the upper 1-1 projection in the third direction.
6. The magnetic element of claim 4 wherein the first lower protrusion comprises: A 1-1 st lower protrusion disposed between the first outer leg and the central leg of the second core, and A 1-2 lower protrusion disposed between the second outer leg portion and the central leg portion of the second core, the 1-2 lower protrusion being located on an opposite side of the 1-1 lower protrusion in the third direction.
7. The magnetic element according to claim 4, wherein the bobbin unit further includes a coil support portion protruding from the second body portion between the first upper protrusion and the first lower protrusion in a horizontal direction, the coil support portion being configured to support the upper coil.
8. The magnetic element of claim 4 wherein the first upper protrusion and the first lower protrusion overlap each other in the first direction.
9. The magnetic element according to claim 4 wherein, The second body portion includes a first through hole formed through the second body portion in the first direction, and The center leg portion of each of the first core and the second core is inserted and disposed in the first through hole.
10. The magnetic element according to claim 9 wherein, The first through hole has a first length in the first direction, The central leg of the first core has a second length in the first direction, The central leg of the second core has a third length in the first direction, and The sum of the second length and the third length is less than the first length.

Description

Magnetic element Technical Field Embodiments relate to a magnetic element. Background Various magnetic coupling devices (i.e., magnetic elements) such as transformers or line filters are incorporated into power supply devices for electronic equipment. Transformers may be used in various purpose electronic devices. For example, a transformer may be used to perform an energy transfer function that transfers energy from one circuit to another. In addition, the transformer may be used to perform a step-up or step-down function that changes the voltage amplitude. Furthermore, since the transformer is characterized by only inductive coupling between the primary and secondary windings, the DC path is not directly formed and thus can be used for DC blocking and AC conduction or for insulating separation between the two circuits. For a 20 kW high capacity transformer, various cooling methods are used to dissipate the heat generated from the coil and core. For example, air cooling with a fan may be used to dissipate heat. However, insufficient air flowing into the transformer may cause a heat dissipation problem, and thus research is being conducted to solve the problem. Disclosure of Invention Technical problem Embodiments provide a magnetic element having excellent cooling performance. Technical proposal The magnetic element according to an embodiment may include a core unit including a first core and a second core disposed opposite the first core in a first direction, a bobbin unit at least partially disposed in the core unit, and a coil unit including an upper coil and a lower coil disposed on the bobbin unit, wherein the upper coil and the lower coil may be disposed spaced apart from each other in the first direction. For example, each of the first and second cores may include a first body portion, a first outer leg portion protruding from one end of the first body portion in a first direction and extending in a second direction intersecting the first direction, a second outer leg portion protruding from the other end of the first body portion in the first direction and extending in the second direction, and a center leg portion protruding between the first outer leg portion and the second outer leg portion in the first direction and extending in the second direction. For example, at least a portion of the upper coil may be disposed between each of the first and second outer legs and the central leg of the first core, and at least a portion of the lower coil may be disposed between each of the first and second outer legs and the central leg of the second core. For example, the bobbin unit may include a second body portion, a first upper protrusion, and a first lower protrusion. On the second body portion, an upper coil and a lower coil are disposed apart from each other in a first direction, a first upper protrusion protrudes from an upper end of the second body portion in a third direction intersecting each of the first and second directions, and a first lower protrusion protrudes from a lower end of the second body portion in the third direction. For example, the first upper protrusion may include a 1-1 upper protrusion disposed between the first outer leg and the central leg of the first core and a 1-2 upper protrusion disposed between the second outer leg and the central leg of the first core, the 1-2 upper protrusion being located on an opposite side of the 1-1 upper protrusion in the third direction. For example, the first lower protrusion may include a 1-1 st lower protrusion disposed between the first outer leg portion and the central leg portion of the second core and a 1-2 st lower protrusion disposed between the second outer leg portion and the central leg portion of the second core, the 1-2 st lower protrusion being located on an opposite side of the 1-1 st lower protrusion in the third direction. For example, the bobbin unit may further include a coil support portion protruding from the second body portion between the first upper protrusion and the first lower protrusion in a horizontal direction, the coil support portion being configured to support the upper coil. For example, the first upper protrusion and the first lower protrusion may overlap each other in the first direction. For example, the second body portion may include a first through hole formed through the second body portion in the first direction, and the center leg portion of each of the first and second cores may be inserted and disposed in the first through hole. For example, the first through hole may have a first length in the first direction, the central leg of the first core may have a second length in the first direction, the central leg of the second core may have a third length in the first direction, and the sum of the second length and the third length may be smaller than the first length. For example, the bobbin unit may include a second through hole formed through the second body part in the horizontal direction, and the