M377682 五、新型說明： 【新型所屬之技術領域】 [0001] 本新型涉及一種高壓變壓器，特別涉及一種用於換流器 的高壓變壓器。 【先前技術】M377682 V. New description: [New technical field] [0001] The present invention relates to a high voltage transformer, and more particularly to a high voltage transformer for an inverter. [Prior Art]
[0002] 通常，磁性元件，如：變壓器等，被廣泛應用於電子裝 置。舉例而言，液晶顯示器（liquid crystal display, LCD) 面板上的換流器所使用的高壓變壓器用於 將接收到的電壓轉換為液晶顯示器所需的高電壓，以驅 動LCD面板中的冷陰極管（Cold Cathode Fluorescent Lamp, CCFL) ° [0003] 隨著LCD面板尺寸的曰趨增大，冷陰極管的數量也相對增 多，從而高壓變壓器所連接的負載增加。由於冷陰極管 彼此的阻抗皆不相同，導致高壓變壓器的次級繞組的輸 出電流不相同，致使冷陰極管的亮度差異過大。[0002] Generally, magnetic components such as transformers and the like are widely used in electronic devices. For example, a high voltage transformer used in a converter on a liquid crystal display (LCD) panel is used to convert a received voltage into a high voltage required for a liquid crystal display to drive a cold cathode tube in an LCD panel. (Cold Cathode Fluorescent Lamp, CCFL) ° [0003] As the size of LCD panels increases, the number of cold cathode tubes increases, and the load connected to the high voltage transformer increases. Since the impedances of the cold cathode tubes are different from each other, the output current of the secondary winding of the high voltage transformer is not the same, resulting in an excessive difference in brightness of the cold cathode tubes.
【新型内容】 [0004] 有鑒於此，需提供一種次級繞組可輸出相同電流的高壓 變壓器。 [0005] 一種高壓變壓器，包括第一鐵芯和第二鐵芯。第一鐵芯 用於纏繞初級繞組，第二鐵芯用於纏繞一對次級繞組。 該等次級繞組相對所述初級繞組軸對稱設置。 [0006] 因本新型的該等次級繞組相對初級繞組轴對稱設置，從 而流過該等次級繞組的磁通量相同，進而該等次級繞組 的輸出電流相同。 表單编號A0101 第3頁/共10頁 M377682 【實施方式】 [_本新型的所有實財式巾，鐵❻缺繞線架（圖中未 顯不）中，初級繞組與次級繞組纏繞於繞線架相對應的 區域，為了方便說明，直接描述鐵怒用於纏繞初級繞組 與次級繞組，省略對繞線架的描述，在此特別說明。 [0008] 圖1所示為本新型第一種實施方式的高壓變壓器的示意 圖。其中，高壓變壓器1〇包括第—鐵芯12及第二鐵芯14 。在本實施方式中’第一鐵芯12為E型，其包括位於中間 的第一外側臂120。第二鐵芯14也為E型，其包括一對相 對第一外側臂120軸對稱設置的第二外側臂14〇 ^在第一 鐵芯12和第二鐵芯14之間還形成一間隙16，用於調整高 壓變壓器10的漏電感。 [0009] 在本實施方式中’第一外側臂120纏繞初級繞組P1，其中 一第二外側臂140纏繞次級繞組S1，另一第二外側臂140 纏繞次級繞組S2，即兩次級繞組S1和S2相對初級繞組P1 細對稱設置。這樣，在初級繞組P1和次級繞組S1之間形 成磁路Ml，在初級繞組P1和次級繞組S2之間形成磁路M2 〇 [0010] 因兩次級繞組S1和S2相對初級繞組P1軸對稱設置，從而 初級繞組P1產生的磁通平均分配到兩次級繞組S1和S2中 。換而言之，磁路Ml中的磁通量等於磁路M2中的磁通量 ’從而兩次級繞組S1和S2有相同的輸出電流，即減少了 高壓變壓器10所連接的負載的電流差異。 [0011] 如果兩次級繞組si和S2所連接的負載的阻抗不相同，則 表單編號A0101 第4頁/共1〇頁 M377682 兩次級繞組S1和S2之間形成磁路M3，該磁路M3產生的磁 通會自動平衡兩次級繞組S1和S 2的輸出電流。且兩次級 繞組S1和S2串連在一起，則流過兩次級繞組S1和S2的磁 通量相同，即兩次級繞組S1和S2有相同的輸出電流。 [0012] 圖2所示為本新型第二種實施方式的高壓變壓器20的示意 圖。第二種實施方式的高壓變壓器20的第一鐵芯22和第 二鐵芯24的結構及初級繞組P1的位置均與第一種實施方 式的高壓變壓器10相同，其不同之處在於：高壓變壓器 20的次級繞組S1和S2分別位於第二鐵芯24的一對内側臂 240。高壓變壓器20的工作原理與高壓變壓器10的工作原 理相同，且產生相同的效果。[New content] [0004] In view of this, it is necessary to provide a high voltage transformer in which the secondary winding can output the same current. A high voltage transformer includes a first core and a second core. The first core is used to wind the primary winding, and the second core is used to wind a pair of secondary windings. The secondary windings are arranged symmetrically with respect to the primary winding axis. Since the secondary windings of the present invention are arranged symmetrically with respect to the primary winding axis, the magnetic flux flowing through the secondary windings is the same, and the output currents of the secondary windings are the same. Form No. A0101 Page 3 / Total 10 pages M377682 [Embodiment] [_ This new type of solid money towel, shovel lacking a bobbin (not shown in the figure), the primary winding and the secondary winding are wound For the convenience of the description, the iron anger is used to wind the primary winding and the secondary winding, and the description of the winding frame is omitted, which is specifically described here. 1 is a schematic view showing a high voltage transformer according to a first embodiment of the present invention. The high voltage transformer 1A includes a first core 12 and a second core 14. In the present embodiment, the first core 12 is of the E type, which includes the first outer arm 120 in the middle. The second core 14 is also E-shaped, and includes a pair of second outer arms 14 axially symmetrically disposed with respect to the first outer arms 120. A gap 16 is also formed between the first core 12 and the second core 14. It is used to adjust the leakage inductance of the high voltage transformer 10. [0009] In the present embodiment, the first outer arm 120 is wound around the primary winding P1, wherein one second outer arm 140 is wound around the secondary winding S1, and the other second outer arm 140 is wound around the secondary winding S2, that is, the secondary winding S1 and S2 are arranged symmetrically with respect to the primary winding P1. Thus, a magnetic path M1 is formed between the primary winding P1 and the secondary winding S1, and a magnetic path M2 is formed between the primary winding P1 and the secondary winding S2. [0010] Since the secondary windings S1 and S2 are opposite to the primary winding P1 axis The arrangement is symmetrically such that the magnetic flux generated by the primary winding P1 is evenly distributed into the secondary windings S1 and S2. In other words, the magnetic flux in the magnetic circuit M1 is equal to the magnetic flux ' in the magnetic circuit M2 so that the secondary windings S1 and S2 have the same output current, i.e., the current difference of the load to which the high voltage transformer 10 is connected is reduced. [0011] If the impedances of the loads connected to the secondary windings si and S2 are not the same, Form No. A0101 Page 4 / Total 1 page M377682 A magnetic circuit M3 is formed between the two secondary windings S1 and S2, the magnetic circuit The magnetic flux generated by M3 automatically balances the output currents of the secondary windings S1 and S2. And the two-stage windings S1 and S2 are connected in series, the magnetic flux flowing through the two-stage windings S1 and S2 is the same, that is, the secondary windings S1 and S2 have the same output current. 2 is a schematic view of a high voltage transformer 20 according to a second embodiment of the present invention. The structure of the first core 22 and the second core 24 of the high voltage transformer 20 of the second embodiment and the position of the primary winding P1 are the same as those of the high voltage transformer 10 of the first embodiment, except that the high voltage transformer The secondary windings S1 and S2 of 20 are located in a pair of inner arms 240 of the second core 24, respectively. The operating principle of the high voltage transformer 20 is the same as that of the high voltage transformer 10, and produces the same effect.
[0013] 圖3所示為本新型第三種實施方式的高壓變壓器30的示意 圖。第三種實施方式的高壓變壓器30的初級繞組P1及兩 次級繞組S1和S2的位置與結構均與第二種實施方式的高 壓變壓器20相同，其不同之處在於：高壓變壓器30的第 一鐵芯32為E型鐵芯，第二鐵芯34為I型鐵芯。高壓變壓 器30的工作原理與高壓變壓器20的工作原理相同，且產 生相同的效果。 【圖式簡單說明】 [0014] 圖1為本新型第一種實施方式的高壓變壓器的示意圖。 [0015] 圖2為本新型第二種實施方式的高壓變壓器的示意圖。 [0016] 圖3為本新型第三種實施方式的高壓變壓器的示意圖。 【主要元件符號說明】 [0017] 高壓變壓器 表單編號A0101 10 ' 20 ' 30 第5頁/共10頁 M377682 [0018] 第一鐵怎 12 ' 22 ' 32 [0019] 第二鐵芯 14、24、34 [0020] 第一外側臂 120 [0021] 第二外側臂 140 [0022] 間隙 16 [0023] 内側臂 240 [0024] 初級繞組 P1 [0025] 次級繞組 SI、S2 [0026] 磁路 Ml、M2、M3 表單編號A0101 第6頁/共10頁3 is a schematic view showing a high voltage transformer 30 according to a third embodiment of the present invention. The position and structure of the primary winding P1 and the secondary windings S1 and S2 of the high voltage transformer 30 of the third embodiment are the same as those of the high voltage transformer 20 of the second embodiment, except that the first of the high voltage transformer 30 The iron core 32 is an E-shaped iron core, and the second iron core 34 is an I-shaped iron core. The high voltage transformer 30 operates in the same manner as the high voltage transformer 20 and produces the same effect. BRIEF DESCRIPTION OF THE DRAWINGS [0014] FIG. 1 is a schematic view of a high voltage transformer according to a first embodiment of the present invention. 2 is a schematic view of a high voltage transformer of a second embodiment of the present invention. 3 is a schematic view of a high voltage transformer according to a third embodiment of the present invention. [Description of main component symbols] [0017] High-voltage transformer form No. A0101 10 ' 20 ' 30 Page 5 of 10 M377682 [0018] First iron 12' 22 ' 32 [0019] Second core 14, 24 34 [0020] First outer arm 120 [0021] second outer arm 140 [0022] gap 16 [0023] inner arm 240 [0024] primary winding P1 [0025] secondary windings SI, S2 [0026] magnetic circuit M1, M2, M3 Form No. A0101 Page 6 of 10