WO2014101314A1 - Method for adjusting leakage inductance of high-frequency transformer, and high-frequency transformer - Google Patents
Method for adjusting leakage inductance of high-frequency transformer, and high-frequency transformer Download PDFInfo
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- WO2014101314A1 WO2014101314A1 PCT/CN2013/070120 CN2013070120W WO2014101314A1 WO 2014101314 A1 WO2014101314 A1 WO 2014101314A1 CN 2013070120 W CN2013070120 W CN 2013070120W WO 2014101314 A1 WO2014101314 A1 WO 2014101314A1
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- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
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- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/38—Auxiliary core members; Auxiliary coils or windings
Definitions
- the present invention relates to electromagnetic technology, and more particularly to a method of adjusting the leakage inductance of a high frequency transformer and a high frequency transformer.
- the transformer and the resonant inductor are separated separately, which not only wastes space, but also makes the PCB board complicated and has large electromagnetic interference. The result is low efficiency, large size, difficult to pass EMC testing, and high cost.
- the resonant inductor is simply integrated into the transformer, and the leakage inductance of the transformer is used as a resonant inductor.
- the enameled wire is wound on a customized skeleton, the primary winding 2 is placed on one side of the skeleton, and the secondary winding 3 is placed on the other side of the skeleton, by changing the distance between the primary and secondary windings. (See Figure 7) Change the leakage inductance of the primary to meet the requirements of the resonant inductor. This method has made a little progress over the former, but it still has many drawbacks.
- the same type of transformer needs to be equipped with different special skeletons when it is required to change the leakage inductance.
- the cost of the skeleton mold is high and the versatility is poor.
- the distance between the primary and secondary windings must be increased, resulting in an increase in the volume of the transformer, poor magnetic coupling capability, and low transmission efficiency of the transformer.
- the distance between the primary and secondary windings may not be increased.
- the technical problem to be solved by the present invention is to provide a method for adjusting the leakage inductance of a high frequency transformer, which can The size of the leakage inductance of the transformer is adjusted to meet the requirements of the transformer, and the volume of the transformer is not increased, and the skeleton of the transformer does not need to be modified.
- Another technical problem to be solved by the present invention is to provide a high-frequency transformer that has a large leakage inductance and a small transformer volume, and can obtain different transformer leakage inductances without modifying the skeleton of the transformer.
- the technical solution for adjusting the leakage inductance of the high-frequency transformer is to fix one or two high-frequency magnetic strips on the outside of the high-frequency transformer core window, located in the primary winding and the secondary winding. Between the adjustment of the gap between the high-frequency magnetic strip and the magnetic core to adjust the leakage inductance of the high-frequency transformer; when two high-frequency magnetic strips are used, the high-frequency magnetic strip is arranged on both sides of the magnetic core.
- the method for adjusting the leakage inductance of the high-frequency transformer described above after adjusting the leakage between the high-frequency magnetic strip and the magnetic core to obtain a suitable high-frequency transformer leakage inductance, the high-frequency magnetic strip and the magnetic core, the primary winding or the secondary The windings are fixed.
- a technical solution of a high-frequency transformer includes a magnetic core, a primary winding, a secondary winding, and one or two high-frequency magnetic strips, and the high-frequency magnetic strip is disposed between the primary winding and the secondary winding.
- the high frequency transformer core window is outside; when two high frequency magnetic strips are used, the high frequency magnetic strips are arranged on both sides of the core.
- the high-frequency magnetic strip is fixed on the magnetic core, the primary winding or the secondary winding with an adhesive material.
- the length of the high frequency magnetic strip is larger than the width of the core window.
- the gap between the high-frequency magnetic strip and the magnetic core is 0-5 mm.
- the material of the high-frequency magnetic strip is NiZn ferrite, triiron tetroxide, iron silicon aluminum or iron silicon.
- the high-frequency magnetic strip material has an initial magnetic permeability of 30-150.
- the high-frequency magnetic strip material has a Curie temperature of more than 250 °C.
- the invention can conveniently adjust the leakage inductance of the transformer to meet the requirements of the resonant inductor of the transformer, and does not increase the volume of the transformer, and does not need to modify the skeleton of the transformer, and the cost is low.
- Figure 1 is a perspective view showing a first embodiment of a high frequency transformer according to the present invention.
- Fig. 2 is a front elevational view showing a second embodiment of the high-frequency transformer of the present invention.
- Fig. 3 is a plan view showing a second embodiment of the high-frequency transformer of the present invention.
- Figure 4 is a left side elevational view of Embodiment 2 of the high frequency transformer of the present invention.
- Fig. 5 is a schematic view showing the distribution of magnetic lines of force when the secondary winding of the high-frequency transformer of the present invention is not short-circuited.
- Fig. 6 is a schematic view showing the distribution of magnetic lines of force when the secondary winding of the high frequency transformer of the present invention is short-circuited.
- Fig. 7 is a structural schematic diagram of a prior art high frequency transformer.
- the high frequency transformer of Embodiment 1 of the present invention includes a magnetic core 1, a primary winding 2, a secondary winding 3, and a high frequency magnetic strip 4, and the high frequency magnetic strip 4 is disposed in the primary winding 1 and the secondary
- the windings 3 are located outside the window of the high frequency transformer core 1 and are fixed on the magnetic core 1 by an adhesive 5 such as an epoxy resin.
- the magnetic core 1 may be a power type magnetic core such as EE, EI, EC, PQ;
- the coil of the primary winding 2 may be an enameled wire, a three-layer insulated wire, a copper foil or a PCB;
- the coil of the secondary winding 3 may be an enameled wire, a three-layer insulated wire , copper foil or PCB.
- the high frequency magnetic strip 4 operates at frequencies up to 20 MHz, and its initial permeability does not decrease at 20 MHz.
- the material of the high-frequency magnetic strip 4 can be made of NiZn ferrite, triiron tetroxide (iron powder core), iron silicon aluminum Or iron silicon.
- the material of the high-frequency magnetic strip 4 has an initial magnetic permeability of 30-150; the Curie temperature is greater than 250 °C.
- the length of the high-frequency magnetic strip 4 is equal to or slightly smaller than the width of the magnetic core 1, which is larger than the width of the window of the magnetic core 1, and the width and thickness are determined as needed.
- the principle of the high frequency transformer of the present invention is as follows:
- the entire transformer has no magnetic flux in the case of a short-circuit in the secondary winding, and the leakage inductance of the transformer is small (theoretical value is zero).
- the high-frequency transformer of this embodiment is changed because the high-frequency magnetic strip 4 is inserted.
- the high-frequency magnetic strip 4 does not affect the main magnetic flux path without short-circuiting the secondary winding 3.
- the main magnetic flux can form a loop through the high-frequency magnetic strip 4 to ensure that the primary winding 2 still has an appropriate amount of magnetic flux to pass, thereby ensuring that the leakage inductance of the transformer reaches a desired value.
- the high frequency magnetic stripe 4 is inserted into the primary leakage inductance between the primary and secondary windings of the transformer to meet the requirements of the resonant inductance of the transformer.
- the gap ⁇ between the high-frequency magnetic strip 4 and the magnetic core 1 is 0-5 mm.
- the leakage inductance of the high-frequency transformer can be adjusted by adjusting the gap ⁇ between the high-frequency magnetic strip and the magnetic core. Reducing the gap ⁇ can increase the leakage inductance of the high-frequency transformer, and increasing the gap ⁇ can reduce the leakage inductance of the high-frequency transformer.
- the two ends of the high-frequency magnetic strip 4 are bonded and fixed to the magnetic core 1 to prevent the position of the high-frequency magnetic strip 4 Changes affect the transformer leakage inductance.
- the high-frequency transformer of the second embodiment of the present invention is as shown in FIG. 1 to FIG. 4, and different from the first embodiment, two high-frequency magnetic strips 4 are used, and two high-frequency magnetic strips 4 are respectively arranged on the magnetic core 1. On both sides.
- the gaps ⁇ 1 and ⁇ 2 between the two high-frequency magnetic strips 4 and the magnetic core may be the same or different.
- the high-frequency magnetic strip 4 is fixed to the primary winding 2 with an adhesive 5 .
- the use of the two high-frequency magnetic strips 4 can further increase the leakage inductance of the transformer.
- the above embodiment of the present invention inserts a high frequency magnetic strip into a transformer to integrate the resonant inductor into the transformer.
- the size of the resonant inductor can be controlled by adjusting the distance that the high frequency magnetic strip is inserted into the window of the core.
- the manufacturing method can reduce the cost of a resonant inductor, and has the advantages of small volume, strong magnetic coupling capability, small electromagnetic interference, high transmission efficiency of the transformer, convenient production, and versatility compared with other simple integration methods.
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Abstract
A method for adjusting a leakage inductance of a high-frequency transformer, and a high-frequency transformer. The high-frequency transformer comprises a magnetic core (1), a primary winding (2), a secondary winding (3) and one or two high-frequency magnetic strips (4), the high-frequency magnetic strips being arranged between the primary winding and the secondary winding and located outside a magnetic core window of the high-frequency transformer. When two high-frequency magnetic strips are adopted, the high-frequency magnetic strips are arranged at both sides of the magnetic core. The high-frequency magnetic strips are inserted into the transformer, so as to enable a resonant inductor to be integrated into the transformer. The size of the resonant inductor is controlled by adjusting the distance between the high-frequency magnetic strips and the magnetic core window, thereby enabling the high-frequency transformer to be small in volume, strong in magnetic coupling force, low in electromagnetic interference, high in transmission efficiency, convenient for manufacture and strong in universality.
Description
一种调整高频变压器漏感的方法和高频变压器 Method for adjusting leakage inductance of high frequency transformer and high frequency transformer
[技术领域] [Technical field]
本发明涉及电磁技术， 尤其涉及一种调整高频变压器漏感的方法和高频变 压器。 The present invention relates to electromagnetic technology, and more particularly to a method of adjusting the leakage inductance of a high frequency transformer and a high frequency transformer.
[背景技术] [Background technique]
电源在釆用谐振式拓补方式时， 需要使用变压器和谐振电感。 常规解决方 法有两种： When the power supply is in the resonant topology, a transformer and a resonant inductor are required. There are two general solutions:
1.变压器和谐振电感独立分开的， 这样不仅浪费空间， 而且使 PCB板走线 复杂、 电磁干扰大。 导致产品效率低、 体积大、 难通过 EMC测试、 成本高。 1. The transformer and the resonant inductor are separated separately, which not only wastes space, but also makes the PCB board complicated and has large electromagnetic interference. The result is low efficiency, large size, difficult to pass EMC testing, and high cost.
2.谐振电感简单地集成于变压器中， 利用变压器的漏感做谐振电感使用。 釆用传统绕制作方法即把漆包线绕制在定制的骨架上， 初级绕组 2放在骨架的 一侧， 次级绕组 3放在骨架的另一侧， 通过改变初、 次级绕组间的距离△ (见 图 7 )改变初级的漏感以达到谐振电感的要求。这种方法比前一种有了一点进步， 但是它还是存在很多缺陷。 2. The resonant inductor is simply integrated into the transformer, and the leakage inductance of the transformer is used as a resonant inductor.传统 Using the traditional winding method, the enameled wire is wound on a customized skeleton, the primary winding 2 is placed on one side of the skeleton, and the secondary winding 3 is placed on the other side of the skeleton, by changing the distance between the primary and secondary windings. (See Figure 7) Change the leakage inductance of the primary to meet the requirements of the resonant inductor. This method has made a little progress over the former, but it still has many drawbacks.
同种变压器在要求漏感改变时就需要开配备不同的专用骨架与之相配， 骨 架模费用高， 通用性差。 The same type of transformer needs to be equipped with different special skeletons when it is required to change the leakage inductance. The cost of the skeleton mold is high and the versatility is poor.
如要加大漏感必需将初、 次级绕组的间距离拉大， 造成变压器体积加大、 磁耦合能力差、 变压器传输效率低。 谐振电感较大时可能加大初、 次级绕组间 的距离仍达不到要求。 If the leakage inductance is to be increased, the distance between the primary and secondary windings must be increased, resulting in an increase in the volume of the transformer, poor magnetic coupling capability, and low transmission efficiency of the transformer. When the resonant inductance is large, the distance between the primary and secondary windings may not be increased.
[发明内容] [Summary of the Invention]
本发明要解决的技术问题是提供一种调整高频变压器漏感的方法， 可以方
便地对变压器漏感的大小进行调整， 以满足变压器使用的要求， 同时不会加大 变压器的体积， 不需要对变压器的骨架进行改动。 The technical problem to be solved by the present invention is to provide a method for adjusting the leakage inductance of a high frequency transformer, which can The size of the leakage inductance of the transformer is adjusted to meet the requirements of the transformer, and the volume of the transformer is not increased, and the skeleton of the transformer does not need to be modified.
本发明另一个要解决的技术问题是提供一种漏感较大、 变压器体积较小， 无需对变压器的骨架进行改动， 即可获得不同变压器漏感的高频变压器。 Another technical problem to be solved by the present invention is to provide a high-frequency transformer that has a large leakage inductance and a small transformer volume, and can obtain different transformer leakage inductances without modifying the skeleton of the transformer.
为了解决上述技术问题， 本发明调整高频变压器漏感的方法釆用的技术方 案是， 将一根或两根高频磁条固定在高频变压器磁芯窗口外侧， 位于初级绕组 和次级绕组之间， 通过调整高频磁条与磁芯之间的间隙来调整高频变压器漏感 的大小； 当釆用两根高频磁条时， 高频磁条布置在磁芯的两侧。 In order to solve the above technical problem, the technical solution for adjusting the leakage inductance of the high-frequency transformer is to fix one or two high-frequency magnetic strips on the outside of the high-frequency transformer core window, located in the primary winding and the secondary winding. Between the adjustment of the gap between the high-frequency magnetic strip and the magnetic core to adjust the leakage inductance of the high-frequency transformer; when two high-frequency magnetic strips are used, the high-frequency magnetic strip is arranged on both sides of the magnetic core.
以上所述的调整高频变压器漏感的方法， 通过调整高频磁条与磁芯之间的 间隙获得合适的高频变压器漏感后， 将高频磁条与磁芯、 初级绕组或次级绕组 固定。 The method for adjusting the leakage inductance of the high-frequency transformer described above, after adjusting the leakage between the high-frequency magnetic strip and the magnetic core to obtain a suitable high-frequency transformer leakage inductance, the high-frequency magnetic strip and the magnetic core, the primary winding or the secondary The windings are fixed.
一种高频变压器的技术方案是， 包括磁芯， 初级绕组、 次级绕组， 一根或 两根高频磁条， 所述的高频磁条布置在初级绕组和次级绕组之间， 位于高频变 压器磁芯窗口外侧； 当釆用两根高频磁条时， 高频磁条布置在磁芯的两侧。 A technical solution of a high-frequency transformer includes a magnetic core, a primary winding, a secondary winding, and one or two high-frequency magnetic strips, and the high-frequency magnetic strip is disposed between the primary winding and the secondary winding. The high frequency transformer core window is outside; when two high frequency magnetic strips are used, the high frequency magnetic strips are arranged on both sides of the core.
以上所述的高频变压器， 高频磁条釆用粘合材料固定在磁芯上、 初级绕组 上或次级绕组上。 In the above-mentioned high-frequency transformer, the high-frequency magnetic strip is fixed on the magnetic core, the primary winding or the secondary winding with an adhesive material.
以上所述的高频变压器， 高频磁条的长度大于磁芯窗口的宽度。 In the high frequency transformer described above, the length of the high frequency magnetic strip is larger than the width of the core window.
以上所述的高频变压器， 高频磁条与磁芯之间的间隙为 0-5毫米。 In the high-frequency transformer described above, the gap between the high-frequency magnetic strip and the magnetic core is 0-5 mm.
以上所述的高频变压器， 高频磁条的材料为 NiZn铁氧体、 四氧化三铁、 铁硅铝或铁硅。 In the high-frequency transformer described above, the material of the high-frequency magnetic strip is NiZn ferrite, triiron tetroxide, iron silicon aluminum or iron silicon.
以上所述的高频变压器， 高频磁条材料的初始磁导率为 30-150。 In the high-frequency transformer described above, the high-frequency magnetic strip material has an initial magnetic permeability of 30-150.
以上所述的高频变压器， 高频磁条材料的居里温度大于 250°C。
本发明可以方便地对变压器漏感的大小进行调整， 以满足变压器谐振电感 的要求， 同时不会加大变压器的体积， 不需要对变压器的骨架进行改动， 成本 较低。 In the high-frequency transformer described above, the high-frequency magnetic strip material has a Curie temperature of more than 250 °C. The invention can conveniently adjust the leakage inductance of the transformer to meet the requirements of the resonant inductor of the transformer, and does not increase the volume of the transformer, and does not need to modify the skeleton of the transformer, and the cost is low.
[附图说明] [Description of the Drawings]
下面结合附图和具体实施方式对本发明作进一步详细的说明。 The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
图 1是本发明高频变压器实施例 1的立体示意图。 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view showing a first embodiment of a high frequency transformer according to the present invention.
图 2是本发明高频变压器实施例 2的主视图。 Fig. 2 is a front elevational view showing a second embodiment of the high-frequency transformer of the present invention.
图 3是本发明高频变压器实施例 2的俯视图。 Fig. 3 is a plan view showing a second embodiment of the high-frequency transformer of the present invention.
图 4是本发明高频变压器实施例 2的左视图。 Figure 4 is a left side elevational view of Embodiment 2 of the high frequency transformer of the present invention.
图 5是本发明高频变压器实施例 1 未短路次级绕组时， 磁力线分布的原理 图。 Fig. 5 is a schematic view showing the distribution of magnetic lines of force when the secondary winding of the high-frequency transformer of the present invention is not short-circuited.
图 6是本发明高频变压器实施例 1短路次级绕组时， 磁力线分布的原理图。 图 7为现有技术高频变压器的结构原理图。 Fig. 6 is a schematic view showing the distribution of magnetic lines of force when the secondary winding of the high frequency transformer of the present invention is short-circuited. Fig. 7 is a structural schematic diagram of a prior art high frequency transformer.
[具体实施方式] [detailed description]
本发明实施例 1的高频变压器如图 1所示， 包括磁芯 1 , 初级绕组 2、 次级 绕组 3和一根高频磁条 4 , 高频磁条 4布置在初级绕组 1和次级绕组 3之间，位 于高频变压器磁芯 1窗口外侧， 通过粘合胶 5 (如环氧树脂） 固定在磁芯 1上。 The high frequency transformer of Embodiment 1 of the present invention, as shown in FIG. 1, includes a magnetic core 1, a primary winding 2, a secondary winding 3, and a high frequency magnetic strip 4, and the high frequency magnetic strip 4 is disposed in the primary winding 1 and the secondary The windings 3 are located outside the window of the high frequency transformer core 1 and are fixed on the magnetic core 1 by an adhesive 5 such as an epoxy resin.
磁芯 1可以是 EE、 EI、 EC、 PQ等功率型磁芯； 初级绕组 2的线圈可以是漆 包线、 三层绝缘线、 铜箔或 PCB; 次级绕组 3的线圈可以漆包线、 三层绝缘线、 铜箔或 PCB。 The magnetic core 1 may be a power type magnetic core such as EE, EI, EC, PQ; the coil of the primary winding 2 may be an enameled wire, a three-layer insulated wire, a copper foil or a PCB; the coil of the secondary winding 3 may be an enameled wire, a three-layer insulated wire , copper foil or PCB.
高频磁条 4工作频率高达 20MHz , 在 20MHz频率下其初始磁导率不减小。 高频磁条 4的材料可以釆用 NiZn铁氧体、 四氧化三铁（铁粉芯）、 铁硅铝
或铁硅。 高频磁条 4材料的初始磁导率要为 30-150; 居里温度大于 250 °C。 高频磁条 4的长度等于或略小于磁芯 1的宽度， 大于磁芯 1窗口的宽度， 宽度和厚度根据需要决定。 The high frequency magnetic strip 4 operates at frequencies up to 20 MHz, and its initial permeability does not decrease at 20 MHz. The material of the high-frequency magnetic strip 4 can be made of NiZn ferrite, triiron tetroxide (iron powder core), iron silicon aluminum Or iron silicon. The material of the high-frequency magnetic strip 4 has an initial magnetic permeability of 30-150; the Curie temperature is greater than 250 °C. The length of the high-frequency magnetic strip 4 is equal to or slightly smaller than the width of the magnetic core 1, which is larger than the width of the window of the magnetic core 1, and the width and thickness are determined as needed.
本发明高频变压器的原理如下： The principle of the high frequency transformer of the present invention is as follows:
传统的高频变压器在次级绕组短路情况下整个变压器无磁通， 变压器漏感 艮小 （理论值为零）。 In the case of a conventional high-frequency transformer, the entire transformer has no magnetic flux in the case of a short-circuit in the secondary winding, and the leakage inductance of the transformer is small (theoretical value is zero).
本实施例的高频变压器因为插入了高频磁条 4 , 情况发生了改变， 如图 5 所示， 在未短路次级绕组 3的情况下高频磁条 4不影响主磁通磁路； 如图 6所 示， 在短路次级绕组 3的情况下， 主磁通可以通过高频磁条 4形成回路保证初 级绕组 2仍然有适量的磁通通过， 从而保证变压器漏感达到要求值。 高频磁条 4 插入变压器初次级绕组之间增大的初级漏感可以满足变压器谐振电感的要 求。 The high-frequency transformer of this embodiment is changed because the high-frequency magnetic strip 4 is inserted. As shown in FIG. 5, the high-frequency magnetic strip 4 does not affect the main magnetic flux path without short-circuiting the secondary winding 3. As shown in FIG. 6, in the case of short-circuiting the secondary winding 3, the main magnetic flux can form a loop through the high-frequency magnetic strip 4 to ensure that the primary winding 2 still has an appropriate amount of magnetic flux to pass, thereby ensuring that the leakage inductance of the transformer reaches a desired value. The high frequency magnetic stripe 4 is inserted into the primary leakage inductance between the primary and secondary windings of the transformer to meet the requirements of the resonant inductance of the transformer.
高频磁条 4与磁芯 1之间的间隙 δ为 0-5毫米。 通过调整高频磁条与磁芯 之间的间隙 δ可以调整高频变压器漏感的大小。减小间隙 δ可以使高频变压器 漏感增大， 加大间隙 δ可以使高频变压器漏感减小。 通过调整高频磁条 4与磁 芯 1之间的间隙 δ获得合适的高频变压器漏感后，将高频磁条 4的两端与磁芯 1粘合固定， 防止高频磁条 4位置发生变化影响变压器漏感。 The gap δ between the high-frequency magnetic strip 4 and the magnetic core 1 is 0-5 mm. The leakage inductance of the high-frequency transformer can be adjusted by adjusting the gap δ between the high-frequency magnetic strip and the magnetic core. Reducing the gap δ can increase the leakage inductance of the high-frequency transformer, and increasing the gap δ can reduce the leakage inductance of the high-frequency transformer. After adjusting the leakage inductance of the high-frequency transformer by adjusting the gap δ between the high-frequency magnetic strip 4 and the magnetic core 1, the two ends of the high-frequency magnetic strip 4 are bonded and fixed to the magnetic core 1 to prevent the position of the high-frequency magnetic strip 4 Changes affect the transformer leakage inductance.
本发明实施例 2的高频变压器如图 1至图 4所示， 与实施例 1不同的是， 釆用了两根高频磁条 4 , 两根高频磁条 4分别布置在磁芯 1的两侧。 两根高频磁 条 4与磁芯之间的间隙 δ 1和 δ 2可以相同， 也可以不同。 The high-frequency transformer of the second embodiment of the present invention is as shown in FIG. 1 to FIG. 4, and different from the first embodiment, two high-frequency magnetic strips 4 are used, and two high-frequency magnetic strips 4 are respectively arranged on the magnetic core 1. On both sides. The gaps δ 1 and δ 2 between the two high-frequency magnetic strips 4 and the magnetic core may be the same or different.
高频磁条 4釆用粘合胶 5固定在初级绕组 2上。 与实施例 1相比， 釆用两 根高频磁条 4可以进一步加大变压器的漏感。
本发明以上实施例把高频磁条插入变压器中， 以实现谐振电感集成于变压 器中。 谐振电感的大小可以通过调节高频磁条插入离磁芯窗口的距离来控制。 这种制作方法可以减少一个谐振电感降低成本， 同其他简单的集成方式相比其 体积小、 磁耦合能力强、 电磁干扰小、 变压器传输效率高、 制作方便、 通用性 强。
The high-frequency magnetic strip 4 is fixed to the primary winding 2 with an adhesive 5 . Compared with the first embodiment, the use of the two high-frequency magnetic strips 4 can further increase the leakage inductance of the transformer. The above embodiment of the present invention inserts a high frequency magnetic strip into a transformer to integrate the resonant inductor into the transformer. The size of the resonant inductor can be controlled by adjusting the distance that the high frequency magnetic strip is inserted into the window of the core. The manufacturing method can reduce the cost of a resonant inductor, and has the advantages of small volume, strong magnetic coupling capability, small electromagnetic interference, high transmission efficiency of the transformer, convenient production, and versatility compared with other simple integration methods.
Claims
1. 一种调整高频变压器漏感的方法， 其特征在于， 将一根或两根高频磁条 固定在高频变压器磁芯窗口外侧， 位于初级绕组和次级绕组之间， 通过调整高 频磁条与磁芯之间的间隙来调整高频变压器漏感的大小； 当釆用两根高频磁条 时， 高频磁条布置在磁芯的两侧。 A method for adjusting a leakage inductance of a high-frequency transformer, characterized in that one or two high-frequency magnetic strips are fixed outside the core window of the high-frequency transformer, between the primary winding and the secondary winding, and are adjusted by The gap between the magnetic strip and the magnetic core adjusts the leakage inductance of the high-frequency transformer; when two high-frequency magnetic strips are used, the high-frequency magnetic strips are arranged on both sides of the magnetic core.
2. 根据权利要求 1 所述的调整高频变压器漏感的方法其特征在于， 通过调 整高频磁条与磁芯之间的间隙获得合适的高频变压器漏感后，将高频磁条与磁 芯、 初级绕组或次级绕组固定。 2. The method of adjusting the leakage inductance of a high-frequency transformer according to claim 1, wherein the high-frequency magnetic strip and the high-frequency magnetic strip are obtained by adjusting a gap between the high-frequency magnetic strip and the magnetic core to obtain a suitable high-frequency transformer leakage inductance. The core, primary winding or secondary winding is fixed.
3. 一种高频变压器， 包括磁芯， 初级绕组和次级绕组， 其特征在于， 包括 一根或两根高频磁条， 所述的高频磁条布置在初级绕组和次级绕组之间， 位于 高频变压器磁芯窗口外侧； 当釆用两根高频磁条时， 高频磁条布置在磁芯的两 侧。 3. A high frequency transformer comprising a magnetic core, a primary winding and a secondary winding, characterized in that it comprises one or two high frequency magnetic strips, said high frequency magnetic strip being arranged in the primary winding and the secondary winding Between, outside the high-frequency transformer core window; when two high-frequency magnetic strips are used, the high-frequency magnetic strips are arranged on both sides of the core.
4. 根据权利要求 3 所述的高频变压器， 其特征在于， 高频磁条釆用粘合材 料固定在磁芯上、 初级绕组上或次级绕组上。 4. The high frequency transformer according to claim 3, wherein the high frequency magnetic strip is fixed to the magnetic core, the primary winding or the secondary winding with a bonding material.
5. 根据权利要求 3 所述的高频变压器， 其特征在于， 高频磁条的长度大于 磁芯窗口的宽度。 5. The high frequency transformer of claim 3, wherein the length of the high frequency magnetic strip is greater than the width of the core window.
6. 根据权利要求 3 所述的高频变压器， 其特征在于， 高频磁条与磁芯之间 的间隙为 0-5毫米。 6. The high frequency transformer according to claim 3, wherein the gap between the high frequency magnetic strip and the magnetic core is 0-5 mm.
7. 根据权利要求 3所述的高频变压器，其特征在于，高频磁条的材料为 NiZn 铁氧体、 四氧化三铁、 铁硅铝或铁硅。 7. The high frequency transformer according to claim 3, wherein the material of the high frequency magnetic strip is NiZn ferrite, triiron tetroxide, iron silicon aluminum or iron silicon.
8. 根据权利要求 3 所述的高频变压器， 其特征在于， 高频磁条材料的初始 磁导率为 30-150。
8. The high frequency transformer according to claim 3, wherein the high frequency magnetic strip material has an initial magnetic permeability of 30 to 150.
9. 根据权利要求 3 所述的高频变压器， 其特征在于， 高频磁条材料的居里 温度大于 250°C。
9. The high frequency transformer of claim 3 wherein the high frequency magnetic strip material has a Curie temperature greater than 250 °C.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220746079.9 | 2012-12-29 | ||
| CN201210589455.2 | 2012-12-29 | ||
| CN 201220746079 CN203013435U (en) | 2012-12-29 | 2012-12-29 | High-frequency transformer |
| CN2012105894552A CN103065778A (en) | 2012-12-29 | 2012-12-29 | Method for adjusting leakage inductance of high-frequency transformer and high-frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014101314A1 true WO2014101314A1 (en) | 2014-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2013/070120 WO2014101314A1 (en) | 2012-12-29 | 2013-01-06 | Method for adjusting leakage inductance of high-frequency transformer, and high-frequency transformer |
Country Status (1)
| Country | Link |
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| WO (1) | WO2014101314A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5958810A (en) * | 1982-09-29 | 1984-04-04 | Toshiba Electric Equip Corp | High-frequency leakage transformer |
| JP2000150255A (en) * | 1998-11-12 | 2000-05-30 | Tokin Corp | Wound part |
| CN201319301Y (en) * | 2008-07-25 | 2009-09-30 | 国琏电子（上海）有限公司 | High-voltage transformer for current converter |
| JP4676974B2 (en) * | 2006-09-15 | 2011-04-27 | 光詮科技股▲フェン▼有限公司 | Method for adjusting mutual inductance and transformer adjusted by the method |
-
2013
- 2013-01-06 WO PCT/CN2013/070120 patent/WO2014101314A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5958810A (en) * | 1982-09-29 | 1984-04-04 | Toshiba Electric Equip Corp | High-frequency leakage transformer |
| JP2000150255A (en) * | 1998-11-12 | 2000-05-30 | Tokin Corp | Wound part |
| JP4676974B2 (en) * | 2006-09-15 | 2011-04-27 | 光詮科技股▲フェン▼有限公司 | Method for adjusting mutual inductance and transformer adjusted by the method |
| CN201319301Y (en) * | 2008-07-25 | 2009-09-30 | 国琏电子（上海）有限公司 | High-voltage transformer for current converter |
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