WO2018094810A1 - Llc变压器及开关电源 - Google Patents

Llc变压器及开关电源 Download PDF

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Publication number
WO2018094810A1
WO2018094810A1 PCT/CN2016/112841 CN2016112841W WO2018094810A1 WO 2018094810 A1 WO2018094810 A1 WO 2018094810A1 CN 2016112841 W CN2016112841 W CN 2016112841W WO 2018094810 A1 WO2018094810 A1 WO 2018094810A1
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WIPO (PCT)
Prior art keywords
winding
retaining wall
inner retaining
primary winding
secondary winding
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PCT/CN2016/112841
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English (en)
French (fr)
Inventor
柳祥华
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深圳Tcl数字技术有限公司
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Publication of WO2018094810A1 publication Critical patent/WO2018094810A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions

Definitions

  • the present invention relates to the field of power supply technologies, and in particular, to an LLC transformer and a switching power supply.
  • the LLC transformer (resonant half-bridge transformer) realizes the resonant conversion function by integrating the resonant inductor into the transformer and using the leakage inductance of the transformer as the resonant inductor. Therefore, the leakage inductance of the LLC transformer is critical to the performance of the LLC transformer.
  • the leakage inductance of the LLC transformer is related to the winding structure of the coil in the transformer frame. Taking a two-slot LLC transformer as an example, the transformer skeleton forms a first winding slot and a second winding slot from the side retaining wall and the inner retaining wall.
  • the leakage inductance of the transformer is the largest and the value is constant.
  • the main object of the present invention is to propose an LLC transformer designed to change the leakage inductance value of an LLC transformer.
  • the present invention provides an LLC transformer comprising: a bobbin, the bobbin extending along a left-right direction; an inner retaining wall and a side retaining wall, the side retaining wall being disposed in the axial direction of the bobbin At both ends, the inner retaining wall is disposed between the two side retaining walls, the inner retaining wall and the side retaining wall separating the winding shaft from at least two winding slots, and a primary winding and a secondary a winding, the primary winding and the secondary winding are disposed in two of the winding slots, and one of the primary winding and the secondary winding is wound over the inner retaining wall and folded around the primary The periphery of the other of the winding and the secondary winding.
  • the height of the inner retaining wall is lower than the height of the side retaining wall.
  • the inner retaining wall is provided with one, and the inner retaining wall is disposed at a middle portion of the winding shaft to form two winding grooves.
  • the inner retaining wall is provided with two, and the inner retaining walls are spaced apart from the winding shaft to form three winding grooves, wherein the middle winding groove is wound around the primary winding, and both sides are The winding groove winds the secondary winding, and the secondary winding is wound around the periphery of the primary winding.
  • the inner retaining wall is provided with two, and the inner retaining walls are spaced apart from the winding shaft to form three winding grooves, wherein the middle winding groove is wound with the secondary winding, two The side winding grooves are wound around the primary winding, and the primary winding is wound around the periphery of the secondary winding.
  • the two inner retaining walls divide the winding shaft into three equal parts.
  • the primary winding and/or the secondary winding employ three layers of insulated wires.
  • the inner retaining wall is made of a non-woven fabric.
  • a magnetic core assembly is disposed in the bobbin, and the magnetic core assembly is an EE magnetic core or an EFD magnetic core.
  • the present invention also provides a switching power supply including the LLC transformer as described above;
  • the LLC transformer includes: a bobbin, the bobbin extending along a left-right direction; an inner retaining wall and a side retaining wall;
  • the side retaining wall is disposed at two ends of the winding shaft axial direction, and the inner retaining wall is disposed between the two side retaining walls, and the inner retaining wall and the side retaining wall separate the winding shaft At least two winding slots, and a primary winding and a secondary winding, the primary winding and the secondary winding being disposed in the two winding slots, and one of the primary winding and the secondary winding is wound over
  • the inner retaining wall is wound around the periphery of the other of the primary winding and the secondary winding.
  • the present invention continues to wind one of the primary winding or the secondary winding to enable one of the primary winding and the secondary winding to Winding over the inner retaining wall and overlying the periphery of the other of the primary winding and the secondary winding, thereby forming an overlapping winding between the primary winding and the secondary winding, thereby increasing the primary winding and the secondary
  • the coupling of the winding reduces the leakage inductance of the LLC transformer, and finally realizes the adjustable leakage inductance of the LLC transformer based on the existing LLC transformer skeleton.
  • FIG. 1 is a schematic structural view of a skeleton of an embodiment of an LLC transformer according to the present invention
  • Figure 2 is a schematic cross-sectional view of the left and right direction of the winding of Figure 1;
  • FIG. 3 is a schematic cross-sectional structural view of another embodiment of the LLC transformer of the present invention in the left-right direction.
  • Label name 100 Winding axis 500 Second winding slot 200 Inner retaining wall 600 Primary winding 300 Side retaining wall 700 Secondary winding 400 First winding slot 110 Housing space
  • the directional indication is only used to explain in a certain posture (as shown in the drawing)
  • the relative positional relationship between the components, the motion situation, and the like if the specific posture changes, the directional indication also changes accordingly.
  • first”, “second”, etc. in the embodiments of the present invention, the description of the "first”, “second”, etc. is used for the purpose of description only, and is not to be construed as an Its relative importance or implicit indication of the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • the invention provides an LLC transformer and a switching power supply.
  • the LLC transformer realizes the leakage inductance of the LLC transformer on the basis of the existing LLC transformer skeleton by stacking the primary winding and the secondary winding.
  • the LLC transformer of the present invention comprises: a bobbin 100, the bobbin 100 extending along the left and right directions; an inner retaining wall 200 and a side retaining wall 300, wherein the side retaining wall 300 is disposed at The two ends of the bobbin 100 are axially disposed, and the inner retaining wall 200 is disposed between the two side retaining walls 300, and the inner retaining wall 200 and the side retaining wall 300 separate the bobbin 100 At least two winding slots; and a primary winding 600 and a secondary winding 700, the primary winding 600 and the secondary winding 700 being disposed separately in the winding slot, and wherein the primary winding 600 and the secondary winding 700 are One is wound over the inner retaining wall 200 and is wound around the periphery of the other of the primary winding 600 and the secondary winding 700.
  • the present invention continues to wind one of the primary winding 600 and the secondary winding 700 to make the primary winding 600 and the secondary winding 700
  • One of the windings can be wound over the inner retaining wall 200 and wound around the periphery of the other of the primary winding 600 and the secondary winding 700, and further, the primary winding 600 and the secondary winding 700 are formed.
  • the winding is overlapped, thereby increasing the coupling between the primary winding 600 and the secondary winding 700, reducing the leakage inductance of the LLC transformer, and finally realizing the leakage inductance of the LLC transformer based on the existing LLC transformer skeleton.
  • the LLC transformer according to an embodiment of the present invention is a two-slot LLC transformer.
  • the inner retaining wall 200 is provided with one and is disposed at a middle portion of the bobbin 100.
  • the inner retaining wall 200 and the side retaining walls 300 on the two sides respectively form a first winding slot 400 and a second winding slot 500, and the height of the inner retaining wall 200 is lower than the height of the side retaining wall 300, thereby facilitating the primary winding.
  • One of the 600 and secondary windings 700 passes over the inner retaining wall 200 so as to wrap around the periphery of the other of the primary winding 600 and the secondary winding 700.
  • the primary winding 600 is wound in the first winding groove 400 to the same height as the inner retaining wall 200, and then the secondary winding 700 is wound into and around the second winding groove 500. After the height of the retaining wall 200 is the same, the winding continues to be wound and wound around the inner retaining wall 200 to the outside of the primary winding 600 in the first winding slot 400, so that the secondary winding 700 and the primary winding 600 are folded, and the primary winding 600 is added.
  • the coupling of the stage winding 700 reduces the leakage inductance of the LLC transformer, and the more the number of turns of the primary winding 600 and the secondary winding 700, the smaller the leakage inductance, thereby achieving the purpose of adjusting the leakage inductance of the two-slot LLC transformer. .
  • the positions of the primary winding 600 and the secondary winding 700 may be interchanged, that is, the secondary winding 700 is wound in the first winding slot 400, and the primary winding 600 is wound in the second winding slot 500. And over the inner retaining wall 200 is wound around the periphery of the secondary winding.
  • an LLC transformer according to another embodiment of the present invention is a three-slot LLC transformer.
  • the inner retaining wall 200 is provided with two, and the two inner retaining walls 200 are spaced apart from each other on the winding shaft to form three.
  • a winding groove wherein the middle winding groove (ie, the winding groove between the two inner retaining walls 200) forms a first winding groove 400, and the winding grooves on both sides (ie: Two winding grooves 500 are formed in the winding groove between the inner retaining wall 200 and the side retaining wall 300.
  • the two inner retaining walls 200 halve the winding shaft 100 to form the first winding slot 400 and the second winding slot 500 having the same length. .
  • the height of the inner retaining wall 200 is lower than the height of the side retaining wall 300.
  • the primary winding 600 Wound in the first winding groove 400 to the same height as the inner retaining wall 200, and then the secondary winding 700 is wound in the second winding groove 500 on the left and right sides to the same height as the inner retaining wall 200, and then entangled, And winding over the inner retaining wall 200 to the outer side of the primary winding 600 in the first winding slot 400, so that the secondary winding 700 is overlapped with the primary winding 600, increasing the coupling of the primary winding 600 and the secondary winding 700, reducing The leakage inductance of the LLC transformer, and the more the number of turns of the primary winding 600 and the secondary winding 700, the smaller the leakage inductance, thereby achieving the purpose of adjusting the leakage inductance of the three-slot LLC transformer.
  • the middle winding groove is wound around the secondary winding, and the winding grooves on both sides are wound around the primary winding, that is, the secondary winding 700 is wound in the first winding groove 400, It is also possible to wind the primary winding 600 in the two winding grooves 500.
  • the primary winding 600 or the secondary winding 700 employs three layers of insulated wires, of course, the primary winding 600.
  • the secondary winding 700 can also adopt three layers of insulated wires at the same time, and the three-layer insulated wires include three layers of insulating materials, and the insulation is high.
  • the primary coil 600 and the secondary coil 700 may also be insulated.
  • the inner retaining wall is made of a non-woven fabric, and the non-woven fabric has good pressure resistance, high temperature resistance, and solvent resistance, and can greatly improve the life of the LLC transformer.
  • the material of the retaining wall may also be an epoxy film having a high dielectric strength.
  • a magnetic core assembly is disposed in the bobbin 100, and the magnetic core assembly is mounted in the accommodating space 110 of the bobbin 100.
  • the magnetic core assembly in this embodiment is an EE core or EFD magnetic core, EE magnetic core and EFD magnetic core have the advantages of large lead space, convenient winding connection, large output power and good thermal stability.
  • the present invention also provides a switching power supply, which includes the above-mentioned LLC transformer, wherein the specific structure of the LLC transformer refers to the above embodiment, and since the switching power supply of the present invention adopts all the technical solutions of the above embodiments, it has at least All the beneficial effects brought about by the technical solutions of the foregoing embodiments are not described herein again.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

一种LLC变压器及开关电源，其中，LLC变压器包括：绕线轴（100），所述绕线轴（100）沿左右向延伸设置；内挡墙（200）和侧挡墙（300），所述侧挡墙（300）设于所述绕线轴（100）轴向的两端，所述内挡墙（200）设于两所述侧挡墙（300）之间，所述内挡墙（200）和所述侧挡墙（300）将所述绕线轴（100）分隔出至少两个绕线槽（400，500）；以及初级绕组（600）和次级绕组（700），所述初级绕组（600）和次级绕组（700）分设于两所述绕线槽（400，500）内，且所述初级绕组（600）和次级绕组（700）的其中之一者缠绕至越过所述内挡墙（200）、并叠绕在所述初级绕组（600）和次级绕组（700）其中另一者的外围。通过叠绕初级绕组（600）和次级绕组（700），增加了初级绕组（600）与次级绕组（700）的耦合，实现了LLC变压器的漏感可调。

Description

LLC变压器及开关电源
技术领域
本发明涉及电源技术领域，特别涉及一种LLC变压器及开关电源。
背景技术
LLC变压器（谐振半桥变压器）实现谐振变换功能的方式是通过将谐振电感集成于变压器中，利用变压器的漏感做谐振电感使用，因此LLC变压器的漏感大小对LLC变压器的性能至关重要。LLC变压器的漏感大小与变压器骨架内线圈的绕线结构有关，以两槽结构的LLC变压器为例，该变压器骨架由侧挡墙和内挡墙形成第一绕线槽和第二绕线槽，因为初级绕组与次级绕组分别绕制在第一绕线槽和第二绕线槽内，中间由内挡墙隔开，因此初级绕组所产生的磁力线不能全部通过次级绕组，此时LLC变压器的漏感值最大且数值一定。
发明内容
本发明的主要目的是提出一种LLC变压器，旨在能够改变LLC变压器的漏感值。
为实现上述目的，本发明提出一种LLC变压器，包括：绕线轴，所述绕线轴沿左右向延伸设置；内挡墙和侧挡墙，所述侧挡墙设于所述绕线轴轴向的两端，所述内挡墙设于两所述侧挡墙之间，所述内挡墙和所述侧挡墙将所述绕线轴分隔出至少两个绕线槽，以及初级绕组和次级绕组，所述初级绕组和次级绕组分设于两所述绕线槽内，且所述初级绕组和次级绕组的其中之一者缠绕至越过所述内挡墙、并叠绕在所述初级绕组和次级绕组其中另一者的外围。
优选地，所述内挡墙的高度低于所述侧挡墙的高度。
优选地，所述内挡墙设有一个，且所述内挡墙设于所述绕线轴的中部以形成两个绕线槽。
优选地，所述内挡墙设有两个，且两所述内挡墙间隔设于所述绕线轴上以形成三个绕线槽，其中，中间的绕线槽绕制初级绕组，两侧的绕线槽绕制次级绕组，所述次级绕组叠绕在所述初级绕组的外围。
优选地，所述内挡墙设有两个，且两所述内挡墙间隔设于所述绕线轴上以形成三个绕线槽，其中，中间的绕线槽绕制次级绕组，两侧的绕线槽绕制初级绕组，所述初级绕组叠绕在所述次级绕组的外围。
优选地，两所述内挡墙将所述绕线轴三等分。
优选地，所述初级绕组和/或所述次级绕组采用三层绝缘线。
优选地，所述内挡墙由无纺布制成。
优选地，所述绕线轴内设有磁芯组件，所述磁芯组件为EE磁芯或EFD磁芯。
此外，本发明还提出一种开关电源，该开关电源包括如上所述的LLC变压器；所述LLC变压器包括：绕线轴，所述绕线轴沿左右向延伸设置；内挡墙和侧挡墙，所述侧挡墙设于所述绕线轴轴向的两端，所述内挡墙设于两所述侧挡墙之间，所述内挡墙和所述侧挡墙将所述绕线轴分隔出至少两个绕线槽，以及初级绕组和次级绕组，所述初级绕组和次级绕组分设于两所述绕线槽内，且所述初级绕组和次级绕组的其中之一者缠绕至越过所述内挡墙、并叠绕在所述初级绕组和次级绕组其中另一者的外围。
本发明将初级绕组和次级绕组分别缠绕至绕线槽中后，对初级绕组或次级绕组的其中之一者继续进行绕线，以使该初级绕组和次级绕组的其中之一者能够缠绕至越过所述内挡墙、并叠绕在所述初级绕组和次级绕组其中另一者的外围，进而，初级绕组与次级绕组之间形成重叠缠绕，从而增加了初级绕组与次级绕组的耦合，减小了LLC变压器的漏感，最终在现有LLC变压器骨架的基础上实现了LLC变压器的漏感可调。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明LLC变压器一实施例骨架的结构示意图；
图2为图1绕线后沿左右方向的剖面结构示意图；
图3为本发明LLC变压器另一实施例沿左右方向的剖面结构示意图。
附图标号说明：
标号 名称 标号 名称
100 绕线轴 500 第二绕线槽
200 内挡墙 600 初级绕组
300 侧挡墙 700 次级绕组
400 第一绕线槽 110 容置空间
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，若本发明实施例中有涉及方向性指示（诸如上、下、左、右、前、后……），则该方向性指示仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本发明实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提出一种LLC变压器及开关电源，该LLC变压器通过初级绕组与次级绕组的叠绕，在现有LLC变压器骨架的基础上实现了LLC变压器的漏感可调。
如图1和图2所示，本发明提出的LLC变压器包括：绕线轴100，所述绕线轴100沿左右向延伸设置；内挡墙200和侧挡墙300，所述侧挡墙300设于所述绕线轴100轴向的两端，所述内挡墙200设于两所述侧挡墙300之间，所述内挡墙200和所述侧挡墙300将所述绕线轴100分隔出至少两个绕线槽；以及初级绕组600和次级绕组700，所述初级绕组600和次级绕组700分设于所述绕线槽内，且所述初级绕组600和次级绕组700的其中之一者缠绕至越过所述内挡墙200、并叠绕在所述初级绕组600和次级绕组700其中另一者的外围。
本发明将初级绕组600和次级绕组700分别缠绕至绕线槽中后，对初级绕组600和次级绕组700的其中之一者继续进行绕线，以使该初级绕组600和次级绕组700的其中之一者能够缠绕至越过所述内挡墙200、并叠绕在所述初级绕组600和次级绕组700其中另一者的外围，进而，初级绕组600与次级绕组700之间形成重叠缠绕，从而增加了初级绕组600与次级绕组700的耦合，减小了LLC变压器的漏感，最终在现有LLC变压器骨架的基础上实现了LLC变压器的漏感可调。
请继续参照图1和图2，本发明一实施例提出的LLC变压器为两槽LLC变压器，内挡墙200设有一个，且设于所述绕线轴100的中部。内挡墙200与两侧的侧挡墙300分别形成第一绕线槽400和第二绕线槽500，而且所述内挡墙200的高度低于侧挡墙300的高度，进而方便初级绕组600和次级绕组700的其中之一者越过所述内挡墙200，从而叠绕在初级绕组600和次级绕组700的其中另一者的外围。
具体地，请参照图2，首先，初级绕组600在第一绕线槽400内缠绕至与内挡墙200的高度相同，然后，次级绕组700在第二绕线槽500内缠绕至与内挡墙200高度相同后继续缠绕，并越过内挡墙200缠绕至第一绕线槽400内初级绕组600的外侧，从而次级绕组700与初级绕组600形成叠绕，增加了初级绕组600与次级绕组700的耦合，减小了LLC变压器的漏感，而且，初级绕组600与次级绕组700叠绕的圈数越多，漏感越小，从而实现两槽LLC变压器漏感可调的目的。
需要说明的是，初级绕组600与次级绕组700的位置可以互换，即：次级绕组700绕制于第一绕线槽400内，初级绕组600绕制在第二绕线槽500内，并越过内挡墙200叠绕在次级绕组外围。
请参照图3，本发明另一实施例提出的LLC变压器为三槽LLC变压器，所述内挡墙200设有两个，且两所述内挡墙200间隔设于所述绕线轴上形成三个绕线槽，其中，中间的绕线槽绕（即：两所述内挡墙200之间的绕线槽）形成一所述第一绕线槽400，两侧的绕线槽（即：所述内挡墙200与所述侧挡墙300之间的绕线槽）形成两个所述第二绕线槽500。本实施例中，为了使LLC变压器的漏感更均匀，两所述内挡墙200将所述绕线轴100三等分，从而形成长度相同的第一绕线槽400与第二绕线槽500。
具体地，请继续参照图3，为了方便初级绕组600越过内挡墙200，从而与次级绕组700进行叠绕，内挡墙200的高度低于侧挡墙300的高度，首先，初级绕组600在第一绕线槽400内缠绕至与内挡墙200的高度相同，然后，次级绕组700在左右两侧的第二绕线槽500内缠绕至与内挡墙200高度相同后继续缠绕，并越过内挡墙200缠绕至第一绕线槽400内初级绕组600的外侧，从而次级绕组700与初级绕组600形成叠绕，增加了初级绕组600与次级绕组700的耦合，减小了LLC变压器的漏感，而且，初级绕组600与次级绕组700叠绕的圈数越多，漏感越小，从而实现三槽LLC变压器漏感可调的目的。容易理解地，在另一实施例中，中间的绕线槽绕制次级绕组，两侧的绕线槽绕制初级绕组，即：第一绕线槽400内绕制次级绕组700，第二绕线槽500内绕制初级绕组600也是可以的。
在本发明一实施例中，为了保证叠绕的初级线圈600与次级线圈700之间良好的绝缘，所述初级绕组600或所述次级绕组700采用三层绝缘线，当然，初级绕组600和次级绕组700也可以同时采用三层绝缘线，三层绝缘线包括三层绝缘材料，绝缘性很高。在其他实施例中，还可以对初级线圈600和次级线圈700进行绝缘处理。
优选地，所述内挡墙由无纺布制成，无纺布具有良好的耐压、耐高温、和耐溶剂性能，能够大幅提高LLC变压器的寿命。在其他实施例中，挡墙的材料还可以为环氧薄膜，环氧薄膜具有较高的绝缘强度。
在本发明一实施例中，所述绕线轴100内设有磁芯组件，所述磁芯组件安装在绕线轴100的容置空间110内，本实施例中的磁芯组件为EE磁芯或EFD磁芯，EE磁芯和EFD磁芯具有引线空间大，绕制接线方便、输出功率大、热稳定性能好等优点。
本发明还提出一种开关电源，该开关电源包括上述LLC变压器，其中，所述LLC变压器的具体结构参照上述实施例，由于本发明的开关电源采用了上述实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (20)

  1. 一种LLC变压器，其特征在于，包括：
    绕线轴，所述绕线轴沿左右向延伸设置；
    内挡墙和侧挡墙，所述侧挡墙设于所述绕线轴轴向的两端，所述内挡墙设于两所述侧挡墙之间，所述内挡墙和所述侧挡墙将所述绕线轴分隔出至少两个绕线槽，以及
    初级绕组和次级绕组，所述初级绕组和次级绕组分设于两所述绕线槽内，且所述初级绕组和次级绕组的其中之一者缠绕至越过所述内挡墙、并叠绕在所述初级绕组和次级绕组其中另一者的外围。
  2. 如权利要求1所述的LLC变压器，其特征在于，所述内挡墙的高度低于所述侧挡墙的高度。
  3. 如权利要求2所述的LLC变压器，其特征在于，所述内挡墙设有一个，且所述内挡墙设于所述绕线轴的中部以形成两个绕线槽。
  4. 如权利要求2所述的LLC变压器，其特征在于，所述内挡墙设有两个，且两所述内挡墙间隔设于所述绕线轴上以形成三个绕线槽，其中，中间的绕线槽绕制初级绕组，两侧的绕线槽绕制次级绕组，所述次级绕组叠绕在所述初级绕组的外围。
  5. 如权利要求4所述的LLC变压器，其特征在于，两所述内挡墙将所述绕线轴三等分。
  6. 如权利要求2所述的LLC变压器，其特征在于，所述内挡墙设有两个，且两所述内挡墙间隔设于所述绕线轴上以形成三个绕线槽，其中，中间的绕线槽绕制次级绕组，两侧的绕线槽绕制初级绕组，所述初级绕组叠绕在所述次级绕组的外围。
  7. 根据权利要求2所述的LLC变压器，其特征在于，所述初级绕组和/或所述次级绕组采用三层绝缘线。
  8. 根据权利要求2所述的LLC变压器，其特征在于，所述内挡墙由无纺布制成。
  9. 如权利要求6所述的LLC变压器，其特征在于，两所述内挡墙将所述绕线轴三等分。
  10. 根据权利要求1所述的LLC变压器，其特征在于，所述初级绕组和/或所述次级绕组采用三层绝缘线。
  11. 根据权利要求1所述的LLC变压器，其特征在于，所述内挡墙由无纺布制成。
  12. 根据权利要求11所述的LLC变压器，其特征在于，所述绕线轴内设有磁芯组件，所述磁芯组件为EE磁芯或EFD磁芯。
  13. 一种开关电源，其特征在于，所述开关电源包括LLC变压器，该LLC变压器包括：
    绕线轴，所述绕线轴沿左右向延伸设置；
    内挡墙和侧挡墙，所述侧挡墙设于所述绕线轴轴向的两端，所述内挡墙设于两所述侧挡墙之间，所述内挡墙和所述侧挡墙将所述绕线轴分隔出至少两个绕线槽，以及
    初级绕组和次级绕组，所述初级绕组和次级绕组分设于两所述绕线槽内，且所述初级绕组和次级绕组的其中之一者缠绕至越过所述内挡墙、并叠绕在所述初级绕组和次级绕组其中另一者的外围。
  14. 如权利要求13所述的开关电源，其特征在于，所述内挡墙的高度低于所述侧挡墙的高度。
  15. 如权利要求14所述的开关电源，其特征在于，所述内挡墙设有一个，且所述内挡墙设于所述绕线轴的中部以形成两个绕线槽。
  16. 如权利要求14所述的开关电源，其特征在于，所述内挡墙设有两个，且两所述内挡墙间隔设于所述绕线轴上以形成三个绕线槽，其中，中间的绕线槽绕制初级绕组，两侧的绕线槽绕制次级绕组，所述次级绕组叠绕在所述初级绕组的外围。
  17. 如权利要求14所述的开关电源，其特征在于，所述内挡墙设有两个，且两所述内挡墙间隔设于所述绕线轴上以形成三个绕线槽，其中，中间的绕线槽绕制次级绕组，两侧的绕线槽绕制初级绕组，所述初级绕组叠绕在所述次级绕组的外围。
  18. 根据权利要求13所述的开关电源，其特征在于，所述初级绕组和/或所述次级绕组采用三层绝缘线。
  19. 根据权利要求13所述的开关电源，其特征在于，所述内挡墙由无纺布制成。
  20. 根据权利要求19所述的开关电源，其特征在于，所述绕线轴内设有磁芯组件，所述磁芯组件为EE磁芯或EFD磁芯。
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CN108461260B (zh) * 2018-02-06 2019-09-20 福建睿能科技股份有限公司 次级绕组漏感匹配的变压器及多路输出谐振变换电路
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