1302073 輕九、發明說明： 【發明所屬之技術領域】 ^ 本發明相關於一種壓電變壓器之驅動電路，尤指一種可均流及 加總複數個壓電變壓器之輸出能量之驅動電路。 【先前技術】 近年來，隨著壓電變壓器（piezoelectric transformer)產業製程 φ 技術之精進，採用壓電變壓器為基礎之換流器（inverter)已日趨 普遍。壓電變壓器的基本原理是利用電場與力場之間的能量互換 效應來轉換電壓，具有體積小、重量輕，高電能轉換效率、高可 罪度、向絕緣、與無電磁干擾（elec^roinagnetic interference，EMI) 等眾多優點，因此逐漸取代傳統的繞線式變壓器，廣泛應用於壓 電式直流電源轉換器(DC/DC converter)、壓電式交流電源調適器 (AC P_r adapter)、壓電式充電器(charger)與壓電式背光(backiight) 模組等。 以目前最具市場潛力的液晶顯示器（liquid crystal display， LCD)為例，相較於傳統繞線式變壓器，壓電變壓器更能符合液 日日產口口對月光松組運用之要求，因此已大量使用於背光模組之驅 動電路。細，目前壓電變壓器之輸出容量均普遍在6·5瓦以下， 支抓，壓電、交壓③、之驅動電路多半應用於小尺寸之液晶顯示器， J筆。己里電腦、個人數位助理加也咖1咖匕細，pDA)與 桌上里螢幕等。因此，如何提昇壓電變壓ϋ之輸出能量，使得壓 1302073 •電變壓器能更廣泛應用至大尺寸液晶顯示器之驅動電路，已成為 相關產業人員之研究重點。 請參考第1圖，第1圖為美國專利號US6791239中所揭露之 -壓電變壓器驅動電路1G之示意圖。壓電變壓器驅動電路⑴包 含一脈寬調製信號(?111此‘她111〇(1111拙(1，1>糧)控制單元12、複 數個驅動單元14、複數轉鮮元15、減健電賴n 16，以 及複數個負載18。先前技術之壓電變壓器驅動電路1〇藉由並聯複 數個壓電㈣$ 16之輸出，以提供更大之輸出能量供於負載 使用然而’壓電變壓器驅動電路1〇之並聯結構僅適用於内部特 性相近之壓電變㈣16，偏若壓電變壓器16之特性稍有不匹配， ，曰le成壓賴壓H I6之輸出能量不均等或操作頻率抖動等問 題，導致無法穩定輸出電流，嚴重時可能會造成壓電變壓器 損毀斷裂。 凊參考第2圖，第2圖為美國專利號哪72·巾所揭露之 一屋電變壓器驅動電路20之示意圖。壓電變壓器動電路2〇 $包含 :電源供應單元2卜-簡控制單元22、—驅動單元24、兩個 壓電懸器26，以及負載28。㈣28包含兩串聯燈管，1第一 端分_餅姆應㈣懇！26之輸_，而其第二端 接。Μ電㈣器驅動電路2G藉由兩组壓電變壓器％於負载^之 ^端進行雙端‘鶴，此軸方式仍受限於壓電類器％ 直限制’當娜8包含大尺寸燈管或較多組幢管時，並無法匕 1302073 有效驅動負載28。 明參考第3圖’第3圖為美國專利號脳⑽65中所揭露之 電變；1 $驅動電路3G之示意圖。㈣變壓器驅動電路如包 :電源供應單το 3卜—控制單元32、—驅動單元％、一轉換單 "複數麵電變壓器36 ’以及負載38。在壓電變虔器驅動電 路3〇中’魏賴器36彼此並聯，可提供加總之輸出能量至負 載38。轉換单元35包含相位轉換器恤如咖起侧和352。 驅動單/ 34包含金屬氧化半導體電晶體（峨i oxide 讀Conduet〇r ’ Μ〇_ 和 342，以及—浮 浮動電壓產生單元344之輪_祕至 "^344 ’ 壓電變麵_祕3_轉__變 =2=。 加總之輪峰量，但壓賴鞋轉 /之木構提供 出能量不解問題仍然存在，在長時 壓電變壓器輸 可靠的操作環境。 呆作時並無法提供穩定與 【發明内容】 本發明提供一種壓電變壓器之 器；以及-第-滙流模組，其包含_^_路’私複數健電變壓 和-輸出端，該第-滙流模組之第=人端、-第二輸入端 憂壓器中一第一壓電變壓器之輪出山Ί ^麵接於該複數個壓電 入端耦接於該複數個壓電變壓哭 μ °亥第—滙流模組之第二輸 °° 1二壓電變壓器之輸出端。 1302073 【實施方式】 本發明提出一種壓電變壓器之驅動電路，能將多組壓電變壓 為之輪出能量疊加，以提供更大之輸出能量至大耗能之負载，不 僅可以提昇驅動電路之整體輸出效能，更可使每組壓電變壓器間 之輪出能量均等，有效地驅動大耗能之負載。換而言之，即使每 、、且壓電賴關之崎等效雖不同，本發明亦可使每組壓電變 ，器達到相同的能量輸出，並不會造成某組壓賴㈣之輸出能 里過大’進而導致某-壓電變壓器過熱而快速老化，產生斷裂等 永久性破壞問題。 、 月；考第4圖，第4圖為本發明第一實施例中一壓電變壓器驅 動電路4〇之不意圖。壓電變壓器驅動電路⑽包含—主電源電路 42、壓電變壓器PZTl和PZT2，以及-滙流模組44，用來驅動-負載46主電源電路42輕接於壓電變壓器ΡΖΤι和ρζΤ2之輸入端 、、'產生壓電I壓A ρΖΤι和ΡΖΤ2之輸入訊號。壓電變壓器防1和 、2據接收到之輸入訊號分別於其輪出端產生相對應之輸出電 1 # 2 ；S机她44之第-輸入端Α和第二輸入端Β分別輕 接於壓電麵ϋ吼和PZT2之輸㈣时職收躲i2， 而滙流模組44之輸出端c _接於負载奶之一端。負載奶可包 含具並猶構之辟1至辭M，貞载46亦可包含單—燈管或其 它結構之複數個燈管。 在壓電變壓器驅動電路4G巾，滙流模組44可將壓電變壓器 8 1302073 :2之輸出電流L和l2疊加，再於輸出端c輸出疊加後 m _至負载46，以提昇整體驅動電路之輸出能力。在本 發明第-實施例中’滙流模組44係為一雙繞組平 精’故細㈣瞧ϋ之、_ W1 =之磁 化感值與線_設計為拥，即可藉由變壓器之磁交鍵偶合特 性:將:入變壓器兩線圈W1㈣之能量強迫為等電流狀態之 功能’意即I产12。因此，本發明之涯流模組44能將兩愿電變壓 器之輸出能量加總，以驅動更A耗能之負載46，_亦可達到電 流均流之效果，消除因壓電變壓器内部特性阻抗不同而產生不同 操作頻率點之問題。 口月多考弟5圖，第5圖為本發明第二實施例中一壓電變壓器驅 動電路50之示意圖。壓電變壓器驅動電路5〇包含主電源電路幻、 P個壓電麦壓器PZTrPZTP，以及T個滙流模組cm^CMt，用來 驅動負載46。主電源電路42耦接於壓電變壓器ρζΤι_ρζΤρ之輸入 端並產生壓電變壓器PZTrPZTp之輸入訊號。壓電變壓器 ΡΖΤΓΡΖΤρ依據接收到之輸入訊號分別於其輸出端產生相對應之 電流Irlp。在本發明第二實施例中，壓電變壓器之數目ρ和滙流 模組之數目τ有p=2T的關係，意即每一滙流模組對應至每兩個壓 電變壓器。如第5圖所示，每一滙流模組接收兩個相對應之壓電 變壓器電流傳來之電流，將電流加總後分別於輸出端產生電流 Wit ’負载46所接收到之驅動電流IlQad即為電流irl_irl^總值， 因此本發明第二實施例可藉由滙流模組CMrCMT來提昇壓電變 1302073 •壓器驅動電路5〇之整體輪出能力。 在本發明第二實施例中，每一滙流模組CMi_CMt亦包含如涯 il模、、且44中之平衡麦壓裔之設計，將内部變壓器線圈之磁化感值 與線醜料為相同，如此可藉由變㈣之磁交鏈偶合特性，將 μ入變壓赠圈之能量強迫為等電流狀態之功能，例如 —Ip。由於電流ΙΓΙΡ會被滙流模組CMi-CM^^流後才會分別加總 _ 輸出’加總後之電流LrlrT之間彼此誤差極小，並不會因為每組壓 電變壓器間之内部等效特性不同，造成某組壓電變壓器之輸出能 里過大而特別容易損毀，因此並不會影響壓電變壓器驅動電路5〇 之整體均流特性。 請參考第6圖，第6圖為本發明第三實施例中一壓電變壓器驅 動電路60之示意圖。壓電變壓器驅動電路60包含主電源電路42、 P個壓電變壓器ΡΖΤΓΡΖΤΡ，以及第1階至第N階滙流模組 • cmi_Cmn，用來驅動負載46。主電源電路42耦接於壓電變壓器 pzTrPZTP之輸入端並產生壓電變壓器ΡΖΤι-ΡΖΤρ之輸入訊號。壓 電變壓器PZTrPZTP依據接收到之輸入訊號分別於其輸出端產生 相對應之電流Ιι-Ιρ。在本發明第三實施例中，第1階至第N階滙 流模組分別包含1_N個滙流模組，滙流模組之總數量由T來代表。 壓電變壓器驅動電路6〇之壓電變壓器數量p、滙流模組之階數N， 以及灌流模組之總數量T有著下列的關係： P=2n ; 1302073 T=2n-1=p_i ； 母-第N階滙流模組接收壓電變壓器％媽巾兩相對應 座電變壓器之輸出電流，將接收到之電流均流且加總，並於立輸 出端分別輸出電流lN1_W。同理，每—第_階滙流模組接收兩 目對第N階滙流模組之輸出電流，將接收到之電流触且加總， 並於其輸出端分職出電流Wi聊）。依此_，第i階滙 流模組％接收兩個第2階滙流模組％之輸出電心及&， 將接收到之電流均流且加總，並於其輸出端輸出電流&咖。因此負 載46所接收到即為電流純經由第1階至料随流模組均流且 加總後之總值IlQad。在本侧第三實施财，藉由第i階至第N 階匯流模組之疊接方式累加壓雙壓器ρζΤι_ρζΤρ之輸出電流， 可驅動更大耗能之負載46。同時，壓電變壓器驅動電路包含多 Ρ白滙机拉組’使彳于在每—階滙流模組巾之輸出電流與操作頻率近 乎相等(例如在第Ν階黯模組中Ινι=Ινι=...=ι，在第2随流 模組中12¾等)，如此可大幅提高㈣變壓器驅動電路6g之整體 均流效果。 1 在本發明第-至第三實施例中，麼電變麼器驅動電路仞、％ 和6〇為單端麟之結構，然而本發明亦可制於雙端驅動之結 構。明參考第7圖’第7圖為本發明第四實施例中—壓電變屢器 驅動電路70之示意圖。壓電懸器驅動電路7()包含主電源電路 42、壓電變壓器ΡΖΤι·ΡΖΤ4，以及滙流模組以和％，用:驅 11 1302073 '動負載46。主電源電路42耦接於壓電變壓器PZTrPZT4之輸入端 並產生壓電麵n PZTrPZTA輸人碱。㈣模組⑽之工輸 • 人端分職接於塵電變壓器PZTA PZT2<輸出端，而其輸出端 則耦接於貞載46之第-端；滙趙組cm2之二輸人端分別柄接於 壓電k壓器PZT3和PZT4之輸出端，而其輪出端則搞接於負載46 之第二端。壓電變壓器PZTrPZT4依據接收到之輸入訊號分別於 其輸出端產生相對應之輸出電流IA，其中電流^和電流l2相位 • 相同，電流13和電流14相位相同，而電流I!、12和電流13、14彼此 相位相反。滙流模組CM!接收壓電變壓器ΡΖΤι和ρΖΤ2電流傳來 之電流1!和I2，將電流均流及加總後於其輸出端產生電流^。此。 同時，滙流模組CM2接收壓電變壓器ΡΖΤ3和ρΖτ4電流傳來之電 流Ι3和Ι4，將電流均流及加總後於其輸出端產生電流1。^，其中 電机1_1和電流Il〇ad2彼此相位相反。因此，壓電變壓器驅動電路 70可對負載46進行雙端驅動。 滙流模組CMi和CM2亦可包含如滙流模組44中之平衡變壓器 之设计’將内部變壓ϋ線圈之磁化感值與線圈數^計為相同，即 可藉由變壓器之磁父鏈偶合特性，將流入變壓器線圈之能量強迫 為等電流狀態之功能，使得，且貞載46之兩端所接收 到之電流Iloadl和電流Iload2具相同電流值。因此，壓電變壓器驅動 電路70巾之滙流模組CMA CM2能將四組壓電變壓器之輸出能 里加總，以雙端驅動更大耗能之負载46，大幅提高壓電變壓器驅 動電路70之整體驅動能力，同時亦可達到電流均流之效果，消除 1302073 因壓電t：壓軸部特性阻抗不同而產生不同操作頻率點之問題。 ， 請參考第8圖，第8圖為本發明第五實施例中一壓電變壓器驅 動電路80之示意圖。壓電變壓器驅動電路80包含主電源電路42、 2P個壓電變壓器PZTrPZT2p、以及2T個滙流模組cMi_cm2t，用 來驅動負載46。主電源電路42耦接於壓電變壓器PZTrPZT2p之 輸入端並產生壓電變壓器ΡΖΤι_ΡΖΤ2ρ之輸入訊號。壓電變壓器 ⑩ PZTVPZI^p依據接收到之輸入訊號分別於其輸出端產生相對應之 電mIi-Lp’其中電流^七彼此相位相同，電流Ιρ+ι七ρ彼此相位相 同而電流Irlp和電流Ip+rhp之間彼此相位相反。滙流模組 CMrCMT之輸入端分別耦接於壓電變壓器ρζΤι_ρζΤρ之輸出端， 而其輸出端則輕接於負載46之第一端；滙流模組CMT+rCM2T2 輸入端分別耦接於壓電變壓器PZTp-PZT^之輸出端，而其輸出端 則耦接於負載46之第二端。在本發明第五實施例中，壓電變壓器 之數目2Ρ和滙流模組之數目2Τ之間有Ρ=2Τ的關係，意即每一 ® 滙流模組對應至每兩個壓電變壓器。 如第8圖所示，滙流模組CMr>CMT在均流及加總電流^七後 为別產生之輸出電流Irl-IrT，負載46之第一端接受到之驅動電流 Iioadi即為Irl-IrT之總值；滙流模組CMT+rCM2T在均流及加總電流 Ιρ+Γ〗2Ρ後分別產生之輸出電流負載46之第二端接受到 之驅動電流load2即為Ii^T+irlrpT；)之總值。由於電流IrIp和電流 Ip+i〗2p彼此相位相反’電流Irl-IrT和電流Ir(T+1)_Ir(2T)彼此相位亦相 13 1302073 “反，也就是說驅動電流Iloadl和Il〇ad2具相反相位。因此，壓電變壓 器驅動電路70可對負載46進行雙端驅動，藉由滙流模組 CMrCM2T疊加壓電變壓器PZTrPZT2p之輸出電流Ιι42ρ，可雙端 驅動更大耗能之負載46，大幅提高整體驅動能力。 另外，在本發明第五實施例中，每一滙流模組CMi_Cm2t亦可 包含如滙流模組44中之平衡變壓器之設計，將内部變壓器線圈之 ，磁化感值與線圈數設計為相同，即可藉由變壓器之磁交鏈偶合特 性，將流入變壓器線圈之能量強迫為等電流狀態之功能，例如h = Ι2=···=Ι2Ρ。由於電流IrI2P會被滙流模組CMi_CM2T均流後才 會分別加總輸出，加總後之電流IrrIr(2T)之間彼此誤差極小，因此 驅動電流Il〇adl和Ibad2彼此間差異亦很小，並不會因為每組壓電變 壓器間之内部等效特性不同，造成某組壓電變壓器之輸出能量過 大而特別谷易損毁，因此並不會影響壓電變壓器驅動電路80之整 體均流特性。 明參考第9圖’第9圖為本發明第六實施例中一壓電變壓器驅 動電路90之示意圖。壓電變壓器驅動電路90包含主電源電路42、 2P個壓電變壓器PZTrPZT2p，以及第j階至第n階滙流模組，用 來驅動負载46。主電源電路42耦接於壓電變壓器ρζτΓΡΖΤ2Ρ之 輸入端並產生壓電變壓器ΡΖΊ>ΡΖΤ2ρ之輸入訊號。壓電變壓器 ΡΖΤρΡΖΊ^ρ依據接收到之輸入訊號分別於其輸出端產生相對應之 電I1〗2P其中電流Irlp彼此相位相同，電流Ιρ+1-Ι2ρ彼此相位相 14 1302073 同’而電流Il-Ip和電流IP+1-I2P之間彼此相位相反。在本發明第六 實施例中，第1階滙流模組包含1個滙流模組CMxi及丨個滙流模 組CMY1，第2階滙流模組包含2個滙流模組CMX2及2個滙流模 組CMY2，同理，第N階滙流模組包含n個滙流模組CMxn& N 個滙流模組CMyn，亦即第1階、第2階，，，，，第N階滙流模組分 別包含2、4，”，，2N個滙流模組，而滙流模組之總數量由2T來 表示。壓電變壓器驅動電路90之壓電變壓器數量2Ρ、滙流模組之 φ 階數Ν，以及滙流模組之總數量2Τ有下列的關係： 2Ρ=2ν+1 ； 2Τ=2ν+1-2=2Ρ-2 ； 每一第Ν階滙流模組接收壓電變壓器ρζΤι_ρζΤ2ρ中兩相對應 壓電變壓器之輸出電流，將接收到之電流均流且加總，並於其輸 出端輸出電流1厕_1_與1观_；[侧。同理，每一第階滙流模 _ 組接㈣城應第Ν 流模組之輸出電流，將接收到之電流均 流且加總，並於其輸出端輸出電流與 工丫㈣丨七㈣㈣。依此類推，第i階滙流模組CMxi和CMyi分別 接收兩對應之第2階滙流模組之輸出電流，將接收到之電流均流 且加總，並分別於其輸出端輸出電流U和U。因此，負載46 之第一端所接收到即為電流IrIp經由第j階至第N階滙流模組中 之電流模組cmx1-cmxn均流且加總後之總值Ii〇adi，而負載46之 第二端所接收到即為電流Wl2p經由帛i階至第心皆、滙流模組中 之電流核組CMY1-CMW^流且加總後之總值Ii〇ad2。由於電流IrIp 15 1302073 和電流Ip+l_〗2P彼此相位相反’驅動電流Ilcadl和I1()ad2彼此相位亦相 反，因此壓電變壓器、驅動電路80可對負載46進行雙端驅動。藉 由滙流模組疊加壓電變壓器ΡΖΤρΡΖΤπ之輸出電流Iri2p，可雙端 驅動更大耗能之負載46，大幅提高驅動能力。同時，壓電變壓哭 驅動電路90包含多階滙流模組，使得在每一階滙流模組中之輪出 電流與操作頻率近乎相等（例如在第N階滙流模組中 ΙχΝ1=ΙχΝ2=··尸ΙχΝΝ 且 ΙγΝ 产ΙγΝ2'·.=ΙγΝΝ，在第 2 P皆滙流模組中 Ιχ2ΐ=Ιχ22且Ιγ2ΐ=Ιγ22等），如此可大幅提高壓電變壓器驅動電路9〇 之整體均流效果。 在本發明第一至第六實施例中所使用之滙流模組可為一平衡 變壓器之設計，如第4圖中所示之滙流模組44。然而，本發明亦 可使用其它類型之滙流模組。請參考第10圖，第10圖為本發明 中一匯流模組100之示意圖。匯流模組100為2對丨(兩輸入端對 一輸出端)之結構，包含線圈W1、W2和電容C1、C2。藉由改變 線圈W1和W2之磁化感值與圈數，以及電容C1、C2之值，即可 藉由變壓H之磁交鏈偶合特性，職人匯顧組刚輸人端A及 B之能量強迫為等電流狀態之功能(意即Iini = w)，並於輸出端◦ 將均流後之電流加總。因此，匯流模组1〇〇之輸出電可驅動 更大耗能之負載，同時亦可達到電流均流之效果，消除因壓電變 壓器内部.阻抗不同而產生不嗎作頻麵之問題。 明參考第11圖，第11圖為本發明中一匯流模組n〇之示意圖。 16 1302073 匯流模組m料2對〗之結構，包含元件ζι、z2和Z3。元件 Z1和Z2之第-端分別輕接至匯流模組⑽之輸入端A及B，元 4 Z1和Z2之第二端則輕接至元件^之第一端，而元件幻之第 二_接至匯流模組則之輸_ c。元件2卜z2和z3可使用 電谷電感’或疋直接導通(短路)。依據不同的元件n、Z2和Z3， 匯流模組110可包含下列結構： 結構1:元件Z；l、Z2和Z3皆為電容； 、、。構2· το件Z1和Z2為電感，而树幻為直接導通； 、、口構3 · το件ZwZ2為電容，而树a為直接導通； 構4元件Z1和Z2為電感，而元件z3為電容；以及 結構5:元件Ζ1、Ζ2*Ζ3皆為電感。 無論結構1_5，匯流模組11〇可改變元件& ζ2和幻之值， 藉由改變電容魏狀值來機輸Μ Α及β至輸_ C之阻 抗，如此可將流人隨模組⑽輸人端Α及Β之能量強迫為等電 流狀態之魏(意即IlN1=W)，並於輸出端c將均流後之電流加 總。因此，匯流模組110之輸出電流w可驅動更大耗能之負載， 同時亦可達到電流均流之效果，消除關電變㈣内部特性阻抗 不同而產生不同操作頻率點之問題。 請參考第！2圖，第12圖為本發明中一匯流模組12〇 匯_組120亦為2對1之結構，包含元件幻、Z2和23件 1302073 Z1和Z2之第一端分別耦接至匯流模組12〇之輪入山 件幻和Z2之第二端輕接至匯流模组12〇之輪:=A及B，元 則耦接於元件Z1和Z2之第-端之間。元件z 而凡件Z3 電容、電感’或是直接導通。依據不_树z ° 23可使用 流模組120可包含下列結構： 和Z3 ’匯 結構6 ·元件Zl、Z2和Z3皆為電容； 結構7 :元件Zl、Z2和Z3皆為電感。 無論結構6或7，匯流模組12〇可改變元件Z1、Z2和u 藉由改變電容或電感之值來調整輸入端A及B至輸出端cl阻 抗’如此可將流人匯流模組12〇輸人端A及B之能量強迫為= 流狀悲之功能(意即1^=1^2)，並於輸出端C將均流後之電流加 總。因此，匯流模組120之輸出電流i〇ut可驅動更大耗能之負載， 同時亦可達到電流均流之效果，消除因壓電變壓器内部特性阻抗 不同而產生不同操作頻率點之問題。 在本發明第一至第六實施例中所使用之滙流模組可為前述2 對1結構之滙流模組44、1〇〇、no或12〇。然而，本發明亦可使 用多對1結構之滙流模組。請參考第13圖，第13圖為本發明第 七實施例中一壓電變壓器驅動電路130之示意圖。壓電變壓器驅 動電路130包含主電源電路42、P個壓電變壓器PZTrPZTP，以 及一滙流模組134,用來驅動負載46。主電源電路42耦接於壓電 1302073 _變壓器pZTrPZTP之輸入端並產生壓電變壓器pZTl_pzTp之輸入 訊號。壓電變壓器ΡΖΤ1_ΡΖΤΡ依據接收到之輸入訊號分別於其輸 出端產生相對應之電流IrIp。 滙流模組134之P個輸入端分別耦接於壓電變壓器 ΡΖΤΓΡΖΤΡ，可將壓電變壓器ρζΤι_ρζΤρ之輸出電流IrIp疊加，再 於輸出端輸出疊加之總電流Il〇ad至負載46，以提昇整體壓電變壓 φ 器之輸出能力。在本發明第七實施例中，滙流模組134係為一多 繞阻平衡變壓器之設計，包含線圈WrWP，藉由改變線圈Wl_Wp 之磁化感值與圈數，即可將流入變壓器每一線圈之能量強迫為等 電々IL狀態之功能，意即。因此，本發明之壓電變壓 器驅動電路130僅需使用一滙流模組即可將壓電變壓器 PZTrPZTp之輸出能量加總，以驅動更大耗能之負載46，同時亦 可達到電流均流之效果，消除因壓電變壓器内部特性阻抗不同而 產生不同操作頻率點之問題。 口月多考弟14圖，弟14圖為本發明第八實施例中一壓電變壓器 驅動電路140之示意圖。壓電變壓器驅動電路140包含主電源電 路42、2P個壓電變壓器ΡΖΤΓΡΖΤ2Ρ，以及滙流模組144和146， 用來驅動貞載46。主電源電路42祕雜電變壓n ΡΖΤι_ΡΖτ2ρ 之輸入端並產生壓電變壓器ρζί>ΡΖΤ2Ρ之輸入訊號。壓電變壓器 ΡΖΊτΡΖΤπ依據接收到之輸入訊號分別於其輸出端產生相對應之 電流Il-〗2P。 19 1302073 «•模、'且144之p個輸入端分別輕接於壓電變壓哭 PZTrPZTp，可將壓電變壓器ρζΤι_ρζΤρ之輸出電流純疊加，二 於輪出端輪its疊加之總電流Ibadi至負载46之第—端；、滙流模組 ^之1"個輪入端分別輕接於壓電變壓器pztwpztv可將壓電 人β Τρ+Ι ΡΖΤ2ρ之輪出電流Ιρ+ι·Ι2Ρ疊加，再於輸出端輪出疊 之〜電机Iload2至負載46之第二端，如此可提昇整體壓電變壓器 之輸出能力。在本發明第八實施例中’滙流模組M4和146為多 繞阻平衡變壓器之設計，分別包含制wrWp和線圈Wp+i_W2p， 藉由改1線® H之磁化感值與圈數，即可將流人變壓器每一 線圈之能量強迫為等電流狀態之魏，意即Ιι=ΐ2= 乂。因 此:本發明之㈣籠11驅動電路14〇僅需使用兩滙流模組即可 字堅錢壓g ρΖΤι·ρΖΤ2ρ之輸&能量加總，以雙端驅動更大耗能 之負載46，同時亦可達到電流均流之效果消除因壓電變壓器内 部特性阻抗不同而產生不同操作鮮點之問題。 ^ 以上所述僅為本發明之較佳實施例，凡依本發明申請專利範 圍所做之解變化與修飾，皆應屬本發明之涵蓋範圍。 【圖式簡單說明】 第1圖至第3 ®為先前技術巾壓f變壓H驅動電路之示意圖。 第4圖至第9圖為本發明第—至第六實施射壓電變壓器驅動電 路之示意圖。 20 1302073 弟10圖至弟12圖為本發明中匯流模組之示意圖。 第13圖為本發明第七實施例中一壓電變壓器驅動電路之示意圖。 第14圖為本發明第八實施例中一壓電變壓器驅動電路之示意圖。 【主要元件符號說明】 12、22、32 控制單元 15、35 轉換單元 14、24、34 驅動單元 2卜31 電源供應單元 42 主電源電路 344 浮動電壓產生單元 35 卜 352 相位轉換器 34 卜 342 電晶體 Α、Β 輸入端 C 輸出端 wrw2P 線圈 a、C2 電容 Ζ1-Ζ3 元件 18、28、38、 46負載 16、26、36 -PZTrPZT2p 壓電變壓器 44、100、110、120、134、144、146、CMJ-CM2T、CMrCMN、 CMxi_CMxn、CMyi_CMyn 涯流模組 10、20、30、40、50、60、70、80、90、130、140 壓電變壓器 驅動電路 I1-I2P " Iload Λ Iloadl " Iload2 " I2I " I22 " Ιχ21 " Ιχ22 " Ιγ21 ' Ιγ22 ' IlNl " IlN2 ' I〇ut、、Ιχ(Ν-1)1、Ιγ(Ν-1)(Ν-1)、Ιγ1·Ιγ(2Τ)、ΙνγΙνΝ、、ΙχΝΙ-ΙχΝΝ、 ΙγΝ1·ΙγΝΝ 電流 211302073 LIGHT Nine, invention description: [Technical field of invention] The present invention relates to a driving circuit of a piezoelectric transformer, and more particularly to a driving circuit capable of averaging and summing the output energies of a plurality of piezoelectric transformers. [Prior Art] In recent years, with the advancement of the piezoelectric transformer industry process φ technology, inverters based on piezoelectric transformers have become more and more popular. The basic principle of the piezoelectric transformer is to use the energy exchange effect between the electric field and the force field to convert the voltage, which has small volume, light weight, high electrical energy conversion efficiency, high sin, insulation, and no electromagnetic interference (elec^roinagnetic) Interference, EMI) and many other advantages, so gradually replace the traditional winding transformer, widely used in piezoelectric DC power converter (DC / DC converter), piezoelectric AC power adapter (AC P_r adapter), piezoelectric Charger and piezoelectric backlight (backiight) modules. Taking the liquid crystal display (LCD), which has the most market potential at present, as an example, compared with the traditional wound-type transformer, the piezoelectric transformer can meet the requirements of the liquid-day Nissan mouth to the Moonlight pine group. Used in the drive circuit of the backlight module. Fine, the output capacity of piezoelectric transformers is generally below 6.5 watts. The driving circuit of piezoelectric and AC voltage is mostly used in small-sized liquid crystal displays, J pens. The computer, personal digital assistant plus coffee, fine coffee, pDA) and the screen on the table. Therefore, how to increase the output energy of the piezoelectric transformer ,, so that the pressure 1302073 • electric transformer can be more widely applied to the driving circuit of large-size liquid crystal display has become the research focus of the relevant industry personnel. Please refer to FIG. 1 , which is a schematic diagram of a piezoelectric transformer driving circuit 1G disclosed in US Pat. No. 6,791,239. Piezoelectric transformer drive circuit (1) contains a pulse width modulation signal (? 111 this 'her 111 〇 (1111 拙 (1, 1 > grain) control unit 12, a plurality of drive units 14, a complex number of fresh elements 15, reduce the power n 16, and a plurality of loads 18. The prior art piezoelectric transformer drive circuit 1 provides a larger output energy for the load by paralleling a plurality of piezoelectric (four) $16 outputs. However, the piezoelectric transformer drive circuit The parallel structure of 1〇 is only suitable for piezoelectric transformers with similar internal characteristics (4)16. If the characteristics of the piezoelectric transformer 16 are slightly mismatched, the output energy of the voltage transformer H I6 is not uniform or the operating frequency is jittery. As a result, the output current cannot be stabilized, and the piezoelectric transformer may be damaged or broken in severe cases. 凊 Referring to FIG. 2, FIG. 2 is a schematic diagram of a house electric transformer driving circuit 20 disclosed in U.S. Patent No. 72. The transformer moving circuit 2 includes: a power supply unit 2, a simple control unit 22, a driving unit 24, two piezoelectric suspensions 26, and a load 28. (4) 28 includes two series lamps, and the first end is divided into pieces. M should (four) 恳! 26 The input is _, and the second end is connected. The ( electric (four) drive circuit 2G is double-ended 'crane by the two sets of piezoelectric transformers at the end of the load, the axis mode is still limited by the piezoelectric type % Straight limit 'When Dana 8 contains large-size lamps or more sets of tubes, it is not able to effectively drive load 28 by 1302073. Refer to Figure 3', Figure 3 for the electrical changes disclosed in US Patent No. 10(10)65; 1 $ drive circuit 3G schematic diagram. (4) transformer drive circuit such as package: power supply single το 3 - control unit 32, - drive unit %, a conversion single " complex surface electrical transformer 36 ' and load 38. The transformer drive circuit 3 is connected in parallel with each other to provide a total output energy to the load 38. The conversion unit 35 includes a phase converter shirt such as a coffee side and a 352. The drive unit/34 includes a metal oxide semiconductor transistor. (峨i oxide reads Conduet〇r ' Μ〇 _ and 342, and — floats the floating voltage generating unit 344 _ secret to "^344 ' piezoelectric face _ secret 3_ turn __ change = 2 =. In short, the amount of peaks, but relying on the shoe turn / the wood structure provides the energy problem is still solved In the long-term piezoelectric transformer, a reliable operating environment is transmitted. The stability of the piezoelectric transformer is not provided. [Invention] The present invention provides a piezoelectric transformer; and a -th-flow module including _^_路'Private complex power transformer and - output terminal, the first - terminal of the first - busmer module, - the second piezoelectric transformer of the second input terminal is in the middle of the first piezoelectric transformer The piezoelectric input end is coupled to the output end of the second piezoelectric transformer of the plurality of piezoelectric transformers. The first end of the piezoelectric transformer is connected to the output of the second piezoelectric transformer. 1302073 [Embodiment] The present invention provides a piezoelectric transformer. The driving circuit can convert multiple sets of piezoelectric transformers into the energy stacking to provide greater output energy to a large energy-consuming load, which not only improves the overall output performance of the driving circuit, but also enables each group of piezoelectrics. The round-off energy between the transformers is equal, effectively driving a large energy-consuming load. In other words, even if the piezoelectric equivalent is different, the present invention can also make each group of piezoelectric transformers achieve the same energy output, and does not cause a certain group of output (4). If the energy is too large, the piezoelectric transformer will overheat and quickly age, causing permanent damage such as breakage. Fig. 4 is a schematic view showing a piezoelectric transformer driving circuit 4 in the first embodiment of the present invention. The piezoelectric transformer driving circuit (10) comprises a main power circuit 42, a piezoelectric transformer PZT1 and PZT2, and a bus module 44 for driving the load 46. The main power circuit 42 is lightly connected to the input terminals of the piezoelectric transformers ΡΖΤι and ρζΤ2, , 'Generate the input signals of piezoelectric I pressures A ρΖΤι and ΡΖΤ2. The piezoelectric transformer prevents the input signals received by 1 and 2 from respectively generating the corresponding output power 1 # 2 at the round output end thereof; the first input terminal Α and the second input terminal S of the S machine 44 are respectively connected to the light The input of the piezoelectric surface ϋ吼 and PZT2 (4) is blocked by i2, and the output c _ of the bus module 44 is connected to one end of the loaded milk. The load milk can contain a singularity and a singularity. The load 46 can also include a plurality of tubes of a single lamp or other structure. In the piezoelectric transformer driving circuit 4G, the bus module 44 can superimpose the output currents L and l2 of the piezoelectric transformer 8 1302073:2, and then output the superimposed m_ to the load 46 at the output c to enhance the overall driving circuit. Output capability. In the first embodiment of the present invention, the 'flow-flow module 44 is a double-winding flat-finished', and the magnetization sense value and the line__ are designed to be held by the transformer. Key coupling characteristics: The function of forcing the energy of the two coils W1 (4) into the equal current state of the transformer is meaning that I is 12. Therefore, the flow module 44 of the present invention can sum the output energy of the two power transformers to drive the load A of the A energy consumption, and can also achieve the effect of current sharing, eliminating the internal characteristic impedance of the piezoelectric transformer. Different problems arise with different operating frequency points. Fig. 5 is a schematic view showing a piezoelectric transformer driving circuit 50 in the second embodiment of the present invention. The piezoelectric transformer drive circuit 5 includes a main power circuit phantom, P piezoelectric dampers PZTrPZTP, and T bus modules cm^CMt for driving the load 46. The main power circuit 42 is coupled to the input end of the piezoelectric transformer ρζΤι_ρζΤρ and generates an input signal of the piezoelectric transformer PZTrPZTp. The piezoelectric transformer ΡΖΤΓΡΖΤρ generates a corresponding current Irlp at its output according to the received input signal. In the second embodiment of the present invention, the number ρ of the piezoelectric transformers and the number τ of the bus modules have a relationship of p = 2T, meaning that each of the bus modules corresponds to every two piezoelectric transformers. As shown in Fig. 5, each of the bus modules receives currents from two corresponding piezoelectric transformer currents, and sums the currents to generate currents at the output terminals. Wit 'the driving current IlQad received by the load 46 is For the current value of the current irl_irl^, the second embodiment of the present invention can improve the overall turn-out capability of the piezoelectric transformer 1302073 and the actuator driving circuit 5 by the manifold module CMRCMT. In the second embodiment of the present invention, each of the confluence modules CMi_CMt also includes a design of a balance of embossing, such as the il il mode, and 44, the magnetization inductance of the internal transformer coil is the same as the line ugly, By changing the magnetic interlinking coupling property of (4), the energy of the μ into the voltage-changing ring is forced to the function of an equal current state, for example, -Ip. Since the current ΙΓΙΡ will be added by the manifold module CMi-CM^^, respectively, the total output _ output 'the total current LrlrT has little error between each other, and will not be due to the internal equivalent characteristics between each group of piezoelectric transformers. Differently, the output energy of a certain group of piezoelectric transformers is too large and particularly easy to be damaged, so it does not affect the overall current sharing characteristics of the piezoelectric transformer driving circuit 5〇. Please refer to FIG. 6. FIG. 6 is a schematic diagram of a piezoelectric transformer driving circuit 60 according to a third embodiment of the present invention. The piezoelectric transformer drive circuit 60 includes a main power supply circuit 42, a P-type piezoelectric transformer ΡΖΤΓΡΖΤΡ, and a first-order to N-th order confluence module • cmi_Cmn for driving the load 46. The main power circuit 42 is coupled to the input end of the piezoelectric transformer pzTrPZTP and generates an input signal of the piezoelectric transformer ΡΖΤι-ΡΖΤρ. The piezoelectric transformer PZTrPZTP generates a corresponding current Ιι-Ιρ at its output according to the received input signal. In the third embodiment of the present invention, the first to the Nth-order bus modules respectively comprise 1_N bus modules, and the total number of the bus modules is represented by T. The number of piezoelectric transformers of the piezoelectric transformer driving circuit 6, the order N of the bus module, and the total number T of the perfusion modules have the following relationship: P=2n; 1302073 T=2n-1=p_i ; The Nth-order bus module receives the output current of the piezoelectric transformer %M-toe two corresponding electric transformers, and the currents received are current-averaged and summed, and the currents lN1_W are respectively outputted at the vertical output terminals. Similarly, each of the -th-order bus modules receives the output current of the two-stage N-th stage bus module, sums up the received current, and distributes the current Wi chat at its output. According to this, the i-th stage bus module % receives the output cores of the two second-order bus modules and the &, the currents are equalized and summed, and the current & . Therefore, the load 46 is received as the current is purely flowed through the first stage to the material-flow module and the total value IlQad is added. In the third implementation of the present aspect, the output current of the dual voltage regulator ρζΤι_ρζΤρ is pressed by the stacking method of the i-th to Nth-order bus modules, so that the load 46 with a larger energy consumption can be driven. At the same time, the piezoelectric transformer drive circuit includes a multi-turned white-jet machine pull group 'to make the output current and the operating frequency of each-stage bus module towel nearly equal (for example, Ννι=Ινι= in the second-order module). ..=ι, 123⁄4 in the second flow-through module, etc., so that the overall current sharing effect of the (4) transformer drive circuit 6g can be greatly improved. In the first to third embodiments of the present invention, the 驱动, %, and 〇 are constructed as a single-ended structure, but the present invention can also be constructed in a double-ended driving structure. 7 is a schematic view of a piezoelectric actuator driving circuit 70 in a fourth embodiment of the present invention. The piezoelectric actuator driving circuit 7 () includes a main power supply circuit 42, a piezoelectric transformer ΡΖΤι·ΡΖΤ4, and a busbar module and %, with a drive 111302073 'moving load 46. The main power circuit 42 is coupled to the input of the piezoelectric transformer PZTrPZT4 and generates a piezoelectric surface n PZTrPZTA. (4) The power transmission of the module (10) • The human terminal is connected to the PZTA PZT2 < output terminal of the dust electric transformer, and the output end is coupled to the first end of the load 46; It is connected to the output ends of the piezoelectric voltage presses PZT3 and PZT4, and its rounded end is connected to the second end of the load 46. Piezoelectric transformer PZTrPZT4 generates corresponding output current IA at its output according to the received input signal, wherein current ^ and current l2 have the same phase, current 13 and current 14 have the same phase, and currents I!, 12 and current 13 14 is opposite in phase to each other. The bus module CM! receives the currents 1! and I2 from the piezoelectric transformers ΡΖΤι and ρΖΤ2, and current is averaged and summed to generate current ^ at its output. this. At the same time, the bus module CM2 receives the currents Ι3 and Ι4 from the piezoelectric transformer ΡΖΤ3 and ρΖτ4 currents, and the current is averaged and summed to generate a current 1 at its output. ^, where the motor 1_1 and the current I1〇ad2 are opposite in phase with each other. Therefore, the piezoelectric transformer drive circuit 70 can double-end drive the load 46. The bus modules CMi and CM2 may also include a design of a balance transformer in the bus module 44. 'The magnetization inductance of the internal transformer ϋ coil is the same as the number of coils, which can be coupled by the magnetic parent chain of the transformer. The energy flowing into the transformer coil is forced into an equal current state, so that the current Iload1 and current Iload2 received at both ends of the load 46 have the same current value. Therefore, the piezoelectric transformer drive circuit 70 the confluence module CMA CM2 can add the total output of the four sets of piezoelectric transformers to drive the load 46 with more energy at both ends, thereby greatly improving the overall piezoelectric transformer driving circuit 70. The driving ability can also achieve the effect of current sharing, eliminating the problem that the 1302073 generates different operating frequency points due to the different characteristic impedances of the piezoelectric t: the pressing shaft portion. Please refer to FIG. 8. FIG. 8 is a schematic diagram of a piezoelectric transformer driving circuit 80 according to a fifth embodiment of the present invention. The piezoelectric transformer drive circuit 80 includes a main power supply circuit 42, 2P piezoelectric transformers PZTrPZT2p, and 2T bus modules cMi_cm2t for driving the load 46. The main power circuit 42 is coupled to the input end of the piezoelectric transformer PZTrPZT2p and generates an input signal of the piezoelectric transformer ΡΖΤι_ΡΖΤ2ρ. Piezoelectric transformer 10 PZTVPZI^p generates corresponding electric power mIi-Lp' according to the received input signal, wherein the currents are the same phase, and the currents Ιρ+ι7ρ are the same phase and the current Irlp and current Ip +rhp is opposite in phase to each other. The input end of the bus module CMRCMT is respectively coupled to the output end of the piezoelectric transformer ρζΤι_ρζΤρ, and the output end thereof is lightly connected to the first end of the load 46; the input terminals of the bus module CMT+rCM2T2 are respectively coupled to the piezoelectric transformer PZTp The output of the -PZT^ is coupled to the second end of the load 46. In the fifth embodiment of the present invention, the number of piezoelectric transformers 2Ρ and the number of the busbar modules 2Τ have a relationship of Ρ=2Τ, meaning that each ® bus module corresponds to every two piezoelectric transformers. As shown in Fig. 8, the convergence module CMR>CMT is an output current Irl-IrT which is generated after the current sharing and the total current is seven, and the driving current Iioadi received by the first end of the load 46 is Irl-IrT. The total value; the current module and the total current Ιρ+Γ2Ρ of the bus module CMT+rCM2T respectively generate the driving current load2 received by the second end of the output current load 46 is Ii^T+irlrpT; Total value. Since the current IrIp and the current Ip+i 〗 2p are opposite in phase to each other 'the current Irl-IrT and the current Ir(T+1)_Ir(2T) are also phased with each other 13 1302073 "reverse, that is to say the drive currents Iloadl and Il〇ad2 have Therefore, the piezoelectric transformer driving circuit 70 can double-drive the load 46, and the output current Ιι42ρ of the piezoelectric transformer PZTrPZT2p is superimposed by the bus module CMRCM2T, which can drive the load 46 with more energy consumption at both ends, greatly improving In addition, in the fifth embodiment of the present invention, each of the bus modules CMi_Cm2t may also include a design of a balance transformer in the bus module 44, and the magnetization inductance and the number of coils of the internal transformer coil are designed as In the same way, the energy flowing into the transformer coil can be forced into an equal current state by the magnetic cross-link coupling characteristic of the transformer, for example, h = Ι2=···==Ι2Ρ. Since the current IrI2P is equalized by the manifold module CMi_CM2T After the total output is added separately, the summed current IrrIr(2T) has a very small error between each other, so the driving currents I1〇adl and Ibad2 are also very small, and will not be changed by each group of piezoelectrics. The internal equivalent characteristics of the piezoelectric transformers are different, which causes the output energy of a certain group of piezoelectric transformers to be too large and the valleys are easily damaged, so that the overall current sharing characteristics of the piezoelectric transformer driving circuit 80 are not affected. 9 is a schematic diagram of a piezoelectric transformer driving circuit 90 according to a sixth embodiment of the present invention. The piezoelectric transformer driving circuit 90 includes a main power supply circuit 42, 2P piezoelectric transformers PZTrPZT2p, and a jth to nth order confluence module. The main power circuit 42 is coupled to the input end of the piezoelectric transformer ρζτΓΡΖΤ2Ρ and generates an input signal of the piezoelectric transformer ΡΖΊ> ΡΖΤ2ρ. The piezoelectric transformer ΡΖΤρΡΖΊ^ρ is respectively based on the received input signal at its output end. Corresponding electric I1〗 2P is generated, wherein the currents Irlp are in phase with each other, the currents Ιρ+1-Ι2ρ are phase phase 14 1302073 with each other, and the currents I1-Ip and currents IP+1-I2P are opposite in phase with each other. In the sixth embodiment, the first-order bus module includes one bus module CMxi and one bus module CMY1, and the second-order bus module includes two bus modules CMX2 and two confluences. Group CMY2, similarly, the Nth-order bus module includes n bus modules CMxn & N bus modules CMyn, that is, the first-order, second-order,,,,, and N-th order confluence modules respectively contain 2 4, ",, 2N bus modules, and the total number of bus modules is represented by 2T. The number of piezoelectric transformers of the piezoelectric transformer driving circuit 90 is 2Ρ, the φ order of the bus module, and the total number of the bus modules 2Τ have the following relationship: 2Ρ=2ν+1; 2Τ=2ν+1-2=2Ρ -2 ; Each of the first-order bus modules receives the output current of the two piezoelectric transformers of the piezoelectric transformer ρζΤι_ρζΤ2ρ, and the currents are evenly distributed and summed, and the current is output at the output end 1 toilet_1_ With 1 view _; [side. Similarly, each of the first-order bus modes _ is connected (four) to the output current of the turbulence module, and the current received is current-averaged and summed, and the current is output at the output end (4) 丨 seven (four) (four). And so on, the i-th order bus modules CMxi and CMyi respectively receive the output currents of the two corresponding second-order bus modules, and the received currents are evenly summed and summed, and the currents U and U are respectively outputted at the output ends thereof. . Therefore, the first end of the load 46 receives the current IrIp and flows through the current modules cmx1-cmxn in the jth to Nth-order bus modules and adds the total value Ii〇adi, and the load 46 The second end receives the total current value Ii〇ad2 of the current core group CMY1-CMW flowing in the current module via the 帛i order to the first center. Since the current IrIp 15 1302073 and the current Ip+l_〗 2P are opposite in phase with each other' drive currents Ilcad1 and I1() ad2 are opposite to each other, the piezoelectric transformer and the drive circuit 80 can double-end the load 46. By integrating the output current Iri2p of the piezoelectric transformer ΡΖΤρΡΖΤπ by the bus module, the load 46 with a larger energy consumption can be driven at both ends, and the driving capability is greatly improved. At the same time, the piezoelectric transformer driving circuit 90 includes a multi-stage bus module such that the current in each of the bus modules is approximately equal to the operating frequency (for example, in the Nth-order bus module ΙχΝ1=ΙχΝ2=· · ΙχΝΝ ΙχΝΝ Ι Ν Ν Ι Ι Ν ' 2'·. = Ι ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ ΝΝ 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 。 。 。 。 。 。 。 。 。 。 。 The bus bar module used in the first to sixth embodiments of the present invention may be a balanced transformer design such as the bus bar module 44 shown in Fig. 4. However, other types of bus modules can be used with the present invention. Please refer to FIG. 10, which is a schematic diagram of a bus module 100 according to the present invention. The bus module 100 is constructed in two pairs (two input terminals to one output terminal), and includes coils W1 and W2 and capacitors C1 and C2. By changing the magnetization inductance and the number of turns of the coils W1 and W2, and the values of the capacitors C1 and C2, the magnetic cross-link coupling characteristics of the transformer H can be used to exchange the energy of the group A and B. Forced to the function of the equal current state (meaning Iini = w), and at the output ◦ sums the current after current sharing. Therefore, the output power of the bus module 1 驱动 can drive a more energy-consuming load, and at the same time, the current current sharing effect can be achieved, and the problem that the frequency is not generated due to the difference in the internal impedance of the piezoelectric transformer can be eliminated. Referring to FIG. 11, FIG. 11 is a schematic diagram of a bus module n〇 in the present invention. 16 1302073 Confluence module m material 2 pairs structure, including components ζι, z2 and Z3. The first ends of the components Z1 and Z2 are respectively connected to the input terminals A and B of the bus module (10), and the second ends of the components 4 Z1 and Z2 are lightly connected to the first end of the component ^, and the second component of the component is _ Connect to the bus module and lose _ c. Element 2, z2 and z3, can be electrically connected (short-circuited) using electric valley inductance ' or 疋. According to different components n, Z2 and Z3, the bus module 110 can comprise the following structure: Structure 1: Component Z; l, Z2 and Z3 are capacitors; Structure 2· το pieces Z1 and Z2 are inductive, and tree illusion is direct conduction; , port structure 3 · το piece ZwZ2 is capacitance, and tree a is direct conduction; structure 4 elements Z1 and Z2 are inductances, and component z3 is Capacitance; and structure 5: Components Ζ1, Ζ2*Ζ3 are all inductors. Regardless of the structure 1_5, the bus module 11〇 can change the value of the component & ζ2 and the phantom value, and by changing the capacitance value of the capacitor to the impedance of the Μ β and β to the _ C, so that the flow can be carried out with the module (10) The energy of the input terminal and the enthalpy are forced to be the same as the current state (IlN1=W), and the current after the current is summed at the output c. Therefore, the output current w of the bus module 110 can drive a load with greater energy consumption, and at the same time, the effect of current sharing can be achieved, and the problem of different operating frequency points due to different internal characteristic impedances of the power-off (4) can be eliminated. Please refer to the first! 2, FIG. 12 is a structure of a bus module 12 in the present invention. The group 120 is also a 2-to-1 structure, including the components, the Z2 and the 23 pieces 1302073. The first ends of the Z1 and Z2 are respectively coupled to the sink mode. The group 12 turns into the mountain and the second end of Z2 is lightly connected to the wheel of the bus module 12:=A and B, and the element is coupled between the ends of the elements Z1 and Z2. Component z and any piece of Z3 capacitor, inductor ' or direct conduction. According to the non-tree z ° 23, the flow module 120 can include the following structures: and Z3 ' sink structure 6 · Components Z1, Z2, and Z3 are capacitors; Structure 7: Components Z1, Z2, and Z3 are inductors. Regardless of the structure 6 or 7, the bus module 12〇 can change the components Z1, Z2 and u by adjusting the value of the capacitance or inductance to adjust the impedance of the input terminals A and B to the output end cl. Thus, the flow manifold module 12 can be The energy of the input terminals A and B is forced to = the function of flow sorrow (meaning 1^=1^2), and the current after current sharing is added at the output C. Therefore, the output current i〇ut of the bus module 120 can drive a more energy-consuming load, and at the same time, achieve the effect of current sharing, and eliminate the problem of different operating frequency points due to different internal characteristic impedances of the piezoelectric transformer. The bus bar module used in the first to sixth embodiments of the present invention may be the aforementioned two-to-one structure bus bar module 44, 1 〇〇, no or 12 〇. However, the present invention can also use a manifold module of a multi-pair configuration. Please refer to FIG. 13, which is a schematic diagram of a piezoelectric transformer driving circuit 130 according to a seventh embodiment of the present invention. The piezoelectric transformer drive circuit 130 includes a main power supply circuit 42, a P piezoelectric transformer PZTrPZTP, and a bus module 134 for driving the load 46. The main power circuit 42 is coupled to the input of the piezoelectric 1302073_transformer pZTrPZTP and generates an input signal of the piezoelectric transformer pZTl_pzTp. The piezoelectric transformer ΡΖΤ1_ΡΖΤΡ generates a corresponding current IrIp at its output terminal according to the received input signal. The P input terminals of the bus module 134 are respectively coupled to the piezoelectric transformer ΡΖΤΓΡΖΤΡ, and the output current IrIp of the piezoelectric transformer ρζΤι_ρζΤρ can be superimposed, and then the superimposed total current I1〇ad is output to the load 46 at the output end to increase the overall pressure. The output capability of the electric transformer φ. In the seventh embodiment of the present invention, the bus bar module 134 is designed as a multi-winding balance transformer, and includes a coil WrWP. By changing the magnetization inductance value and the number of turns of the coil W1_Wp, it can flow into each coil of the transformer. The energy forcing is a function of the isoelectric 々IL state, meaning. Therefore, the piezoelectric transformer driving circuit 130 of the present invention only needs to use a bus module to sum the output energy of the piezoelectric transformer PZTrPZTp to drive the load 46 with more energy consumption, and at the same time achieve the effect of current sharing. The problem of different operating frequency points due to different internal characteristic impedances of the piezoelectric transformer is eliminated. Fig. 14 is a schematic diagram of a piezoelectric transformer driving circuit 140 in the eighth embodiment of the present invention. The piezoelectric transformer drive circuit 140 includes a main power supply circuit 42, 2P piezoelectric transformers ΡΖΤΓΡΖΤ2, and bus modules 144 and 146 for driving the load 46. The main power supply circuit 42 converts the input end of the voltage n ΡΖΤι_ΡΖτ2ρ and generates an input signal of the piezoelectric transformer ρζί>ΡΖΤ2Ρ. The piezoelectric transformer ΡΖΊτΡΖΤπ generates a corresponding current I1 - 2P at its output according to the received input signal. 19 1302073 «•Mold, 'and the p input terminals of 144 are respectively connected to the piezoelectric transformer PZTrPZTp, which can superimpose the output current of the piezoelectric transformer ρζΤι_ρζΤρ, and the total current Ibadi of the wheel output wheel it superimposed to The first end of the load 46; the 1" wheel-in terminal of the bus module ^ is respectively connected to the piezoelectric transformer pztwpztv to superimpose the piezoelectric current β Τρ+Ι ΡΖΤ2ρ round current Ιρ+ι·Ι2Ρ, and then The output end turns out the motor Iload2 to the second end of the load 46, which improves the output capability of the overall piezoelectric transformer. In the eighth embodiment of the present invention, the "flow-flow modules M4 and 146 are designed as a multi-winding balance transformer, which respectively includes a wrWp and a coil Wp+i_W2p, by changing the magnetization value and the number of turns of the 1 line ® H, that is, The energy of each coil of the flow transformer can be forced to the same current state, that is, Ιι=ΐ2= 乂. Therefore, the (four) cage 11 driving circuit 14 of the present invention only needs to use two bus modules to convert the energy of the g ρΖΤι·ρΖΤ2ρ and the total energy consumption of the load 46 at the same time. It can also achieve the effect of current sharing current to eliminate the problem of different operation fresh points due to the different internal characteristic impedance of the piezoelectric transformer. The above is only the preferred embodiment of the present invention, and all changes and modifications made by the scope of the present invention should be covered by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 through Fig. 3 are schematic views of a prior art tissue pressure f-variable H drive circuit. 4 to 9 are views showing the driving circuits of the piezoelectric transformers of the first to sixth embodiments of the present invention. 20 1302073 The picture from the 10th to the 12th is a schematic diagram of the bus module in the present invention. Figure 13 is a schematic view showing a piezoelectric transformer driving circuit in a seventh embodiment of the present invention. Figure 14 is a schematic view showing a piezoelectric transformer driving circuit in an eighth embodiment of the present invention. [Main component symbol description] 12, 22, 32 Control unit 15, 35 Conversion unit 14, 24, 34 Drive unit 2 31 Power supply unit 42 Main power circuit 344 Floating voltage generating unit 35 352 Phase converter 34 342 Crystal Α, Β Input C Output wrw2P Coil a, C2 Capacitor Ζ1-Ζ3 Element 18, 28, 38, 46 Load 16, 26, 36 - PZTrPZT2p Piezoelectric transformer 44, 100, 110, 120, 134, 144, 146 , CMJ-CM2T, CMRCMN, CMxi_CMxn, CMyi_CMyn Endstream Modules 10, 20, 30, 40, 50, 60, 70, 80, 90, 130, 140 Piezoelectric Transformer Drive Circuits I1-I2P " Iload Λ Iloadl " Iload2 " I2I " I22 " Ιχ21 " Ιχ22 " Ιγ21 ' Ιγ22 ' IlNl " IlN2 ' I〇ut, Ιχ(Ν-1)1, Ιγ(Ν-1)(Ν-1),Ιγ1 ·Ιγ(2Τ), ΙνγΙνΝ, ΙχΝΙ-ΙχΝΝ, ΙγΝ1·ΙγΝΝ Current 21