201131926 六、發明說明： 【發明所屬之技術領域】 非接觸方式進 行機 【先前技術】 此種非接觸式供電裝置，近年來 接觸方式對岐於行動電話或數位械等;可攜式°機=為以非 池(電池)進行充電的裝置。在此種非接觸式供電裝置中， 式機器及斟廄該0Γ描4 係、在可攜 式機器及對應該可攜式機器之充電器，分別具備有授受；= 電力的線圈，藉由在此等兩線Μ之電磁感應使從充電 可攜式機㈣交流電力在可赋機器轉換成直流電力，藉以= 攜式機器之電源的二次電池進行充電。但是，藉由此種非接觸式 充電雖然、可省略電性連接充電贿可攜式機!!_連接端子，但 是要掌握依充電器所進行的二次電池之充電狀態並非容易，且也 難以管理其充電量。 因此’習知也有提出在可攜式機器側調整二次電池之充電狀 態的技術等方案，其一例已記載於專利文獻1中。亦即，在專利 文獻1所記載的非接觸式供電裝置中，係在可攜式機器侧之線圈 設置二個線圈數不同的接頭(tap)並可從此等接頭取出各為不同的 電力，且在可攜式機器中，當對二次電池充電時，藉由與該電池 之充電狀態相應的此等接頭之選擇，可取出適於該情況之充電的 電力。藉此，雖然可在可攜式機器側調整二次電池之充電量，但 是卻發生了如下課題：無論是否依據可攜式機器進行此種的充電 4 201131926 調整，在充電器側仍會對其線圈持續供給一定的電力，而造成電 力浪費產生的課題。 繁於此種情事，習知也進—步提出—種在充電器侧一邊掌握 二次電池之充電狀態’ -邊調整供給至可攜式機器的電力本身之 技術等方案，其-例已記餅專敝獻2或專敝獻3。首先，專 利文獻2所記載的非接觸式供電裝置，係具備：充電器之電源部， 其係對-次制進行振盪控制；以及可攜式機^之貞載部，其係 具有供給來自該受振盪之-次線圈之電力的二次線圈，並且具有 並聯連接於該二次線圈的二次電池(蓄電池卜又，在上述二次 圈，係並聯連接有用讀更其輸出㈣的負載控制手段。然後， 藉由該負載控制手段按照二次電池之充電狀態切換二次線圈 聯電路的開放與短路，使相對於二次線圈的電力供給特性、即二 1線圈的接收電力(受電)特性產生變化。又，專利文獻3所記載的 2觸式供電裝置係具有：信號傳送用負載電路，其係在供給 至負載的可攜式機器之二次線圈的輸出，以能夠並聯地連接， 預所構成的電阻方式進行控制。然後，藉由 雷接/非連接使輪出_產生變動，以使二次線圈之受 Ζΐϋΐ。無論是在此等手法中之其中—個情況，與二次 目應的可攜式機器之二次線圈的受電特性之變 次線圈電磁耦合於的充電器之-次線圈的輸 電過該—次線圈之輸出電壓的變化，可控制充 電器供給至一次線圈的電力。 丨日_公開公報特開平⑽103號 ^文獻习日本專利公報特許第_"號 [專利文獻3]日本專利㈣公報特開平譲 201131926 【發明内容】 (發明所欲解決之課題） 如此，藉由根據充電器在可攜式機器側的受電特性之 變更、所謂來自可攜式機器側之資訊來調整供給至可攜式 機器的電力，就可減少因供給不需要電力至所對應的可攜 式機器而產生的電力浪費等。但是，當為了資訊傳遞而使 二次線圈之輸出短路，或將上述電阻並聯連接於該二次線 圈之輸出時，並無法避免二次線圈之輸出電力的不必要浪 費，並且即使在接收該輸出電力之供給的二次電池等之負 載中也無法避免電力供給遭停止或減少等之不良情形。 本發明係有鑑於此種實際情況而開發完成者，其目的 在於提供一種在以非接觸方式從一次線圈供給電力至二次 線圈時，可一邊共用該電力供給所用的電路，一邊可以更 少的消耗電力進行從二次線圈至一次線圈之資訊傳遞的非 接觸式供電裝置。 (解決課題之手段） 本發明之第一態樣係一種非接觸式供電裝置。該裝置 係具備：一次線圈，其係產生交變磁通；諧振電路部，其 係包含二次線圈，且以能夠變更電路常數之方式而構成， 該二次線圈係在與產生於前述一次線圈之交變磁通交叉的 位置，從前述一次線圈以非接觸方式接收對應於前述交變 磁通的交變電力；調變控制裝置，其係根據應傳遞至前述 一次線圈之資訊來變更前述諧振電路部之電路常數，藉此 調變由前述二次線圈所接收的交變電力之振幅；以及解調 6 201131926 控制裝置，其係從按照在前述二次線圈的交變電力之振幅 變化而產生於前述一次線圈的交變電力之振幅變化中，解 調已傳遞至前述一次線圈之資訊。 若依據此種構成，則調變控制裝置係藉由變更諧振電 路部之電路常數，根據欲傳遞至一次線圈之資訊使由二次 線圈所接收的交變電力之電壓振幅產生變化。解調控制電 路係根據依該二次線圈的電壓之振幅變化而產生之一次線 圈的電壓之振幅變化，取得從調變控制裝置傳遞而來的預 定資訊。藉此，來自調變控制裝置之資訊可傳遞至解調控 制裝置。例如，一次線圈及解調控制裝置備置於充電器等 之第一機器，而二次線圈、諧振電路部及調變控制裝置備 置於包含二次電池或負載的可攜式機器等之第二機器的情 況時，解調控制裝置就可按照連接於調變控制裝置的二次 電池或負載等之狀況，控制一次線圈之驅動並適當地控制 傳遞至二次線圈的電力。 又，由於變更包含二次線圈的諧振電路部之電路常 數，所以可避免在二次線圈受電後，經由整流或平滑化等 之調整而轉換成適於對負載之供給的狀態之直流電力，因 資訊傳遞而被大量消耗。亦即，從二次線圈對一次線圈傳 遞資訊之際，可抑制如習知般地因藉由對於直流電力之負 載變動使二次線圈之特性產生變化，而消耗應供給至二次 電池等之負載的直流電力。藉此，可減輕資訊傳遞對於負 載之直流電力的供給造成不良影響，例如停止對負載供給 電力或大幅減少供給量等的可能性。 再者，由於使包含二次線圈的諧振電路部之電路常數 201131926 產生變化，所以也較容易進行賦予二次線圈的受電特性之 調整或變更等。藉此，可容易進行諧振電路部之受電特性 的設計或調整，也可提高具有此種諧振電路部的非接觸式 供電裝置之實施或採用的可能性。 本發明之第二態樣係一種從包含一次線圈的電力發送 部以非接觸方式接收電力的電力接收部。電力接收部係具 備.諧振電路部，其係包含二次線圈，且以能夠變更電路 常數之方式而構成，該二次線圈係在與產生於前述一次線 圈之父變磁通交又的位置，從前述一次線圈以非接觸方式 接收對應於别述交變磁通的交變電力；以及調變控制裝 置，其係根據應傳遞至前述一次線圈之資訊來變更前述諧 ，電路部之電路常數，藉此調變由前述二次線圈所接收的 父變電力之振幅。若依據該構成，則可提供一種適於上述 第一態樣之非接觸式供電裝置的電力接收部。 【實施方式】 (第一實施形態） 以下，係按照圖式說明將本發明之非接觸式供電裝置 具體化的第一實施形態。圖丨係針對第一實施形態之^接 觸式供電裝置顯示其電氣電路之概略構成的示意圖。 如圖1所示，非接觸式供電裝置，係大致區分具備電 力發送部10與電力減部2〇。首先，針對f力發送 加以說明。 電力發送部10，係具有一次線圈L1，且在該一次線 201131926 圈L1並聯連接有諧振用電容器C4以構成一次側的lc電 路:一次側的LC電路、二極體D2與電阻R5之並聯電路、 作為開關元件之N通道MOS電晶體FET1、以及電阻R7 係串聯連接而構成串聯電路，且該串聯電路並聯連接於直 流，源E。另外，在電阻尺7，係並聯連接有由電阻尺6與 電谷器C5之串聯連接而構成的rc電路。 、又，在直流電源E，係並聯連接有電容器C1，並且也 並聯連接有由啟動電阻R1與電容器C2所構成的串聯電 路。在啟動電阻R1與電容器C2之連接點N1，係透過由 與一次線圈L 一起構成諧振變壓器的反饋線圈l3、及電阻 R3所構成的串聯電路而連接有M〇s電晶體FET1 端子。 Ί極 再者，電力發送部10，係具有由ΝρΝ電晶體所 縣偏壓控制用電晶體TR2,且其集極端子連接於M〇s電晶 FET1之閘極端子，射極端子連接於直流電源e之負端 =地又’偏壓控制用電晶體TR2之基極端子係連接 於構成RC電路的電阻R6與電容器C5之連接點N3。 如此所構成的電力發送部1G，係成為單石之自激式電 ，譜振型的變流器電路即所謂的電壓諧振電路，且藉由該 ，壓譜振電路之減動作可從—次線圈u產生一定頻率: 的父變磁通。因此’針對該振盪動作簡單說明於下。 電力發送部10,係藉由從直流電源£供給電源電壓、 ，例如電麼5V，經由啟動電阻R1、反饋線圈L3、電阻R3， =口電壓至福電晶體FET1之閘極端子。當施加至腫 電晶體蕭1之閘極端子的電壓，上升至如電流流動於該 201131926 MOS電晶體FET1之沒極、源極間的導通電壓時，該mqs 電晶體FET1就會導通而電流會流動於汲極、源極間。藉 此在一次線圈L1流動有電流而產生磁通，且在接收該磁通 的反饋線圈L3產生用以維持M0S電晶體FET1之導通電 壓的電壓，以使MOS電晶體FET1之閘極電壓維持於導通 電壓，如此可維持該MOS電晶體FET1之導通狀態。 當藉由MOS電晶體FET1之導通而電流流動於汲極、 源極間時，產生於電阻R 7的電壓就會施加於由電阻R 6與 電容器C5所構成的RC電路，且該Rc電路，會伴隨其^ 容器C5之充電而使電容器C5之端子間電壓上升。依該端 子間電壓之上升，RC電路的電阻R6與電容器C5間之連 接點N3的電壓會上升，而連接於該連接點N3的偏壓控制 用電晶體TR2之基極端子的電壓會上升。偏壓控制用電晶 體TR2,係當其基極端子之電壓上升而呈電流流動於集 極、射極間的導通狀態，電流就會流動於集極、射極間， 且使集極、射極間之電位差降低而成為大致「〇」。藉此， 偏壓控制用電晶體TR2之集極端子的電壓會降低至直流電 源E之負端子(接地)的位準’而連接於該集極端子的 電晶體FET之閘極端子的電壓也會變成接地的位準，且該 MOS電晶體FET1會呈纽極、源極間不流動電 ^ 之狀態。 m 當MOS電晶體FET1被切斷時，由於一次線圈li所 產生的磁通會減少’所以反饋線圈u之電壓方向會產生變 化而產生維持切_電壓’並且該電壓會施加於閘極端子 而維持MOS電晶體FET1的切斷。又當該M〇s電晶體ρΕτι 201131926 被切斷時’流動於一次線圈L1的電流會流動於諧振用電容 器C4’而由一次線圈L1與諧振電容器€4所構成的[匸電 路會諧振。藉由該LC電路之諧振，M0S電晶體FET1之 汲極側的電壓會上升而到達峰值，之後會下降。此時，在 反饋線圈L3之端子間，也發生與一次線圈u相同的電壓 變動。亦即，在耦合於M0S電晶體FET1之閘極端子的反 饋線圈L3之第一端子，電壓會下降而到達峰值，之後會上 升。然後過了不久，會在反饋線圈L3之該第一端子，產生 可使MOS電晶體FET1導通的電壓，而MOS電晶體FET1 會再度導通。依如此的M0S電晶體FET1之導通與切斷之 重複動作，MOS電晶體FET1就可被切換，並且可藉由該 切換而使一次線圈L1振盪。另外，第一實施形態中，M〇s 電晶體FET1被切換的頻率、即一次線圈L1所振盪的頻率 係調整為l〇〇kHz(千赫茲）至200kHz。 又，在電力發送部1〇係設置有作為解調控制裝置的 一次側控制裝置11。一次側控制裝置u，係以具有中央運 算處理裝置(CPU)、記憶裝置(非揮發性記憶體R〇M、揮發 性記憶體RAM等）的微電腦為中心而構成，根據儲存於記 憶裝置的各種資料及程式，執行電力發送部10之LC電路 的振盪控制等之各種控制。另外，於第一實施形態中，解 調來自電力接收部20之通信信號’並且解析被解調後的信 號，根據該解析結果控制LC電路之振盪。又，在非揮發 性1憶體ROM巾，事先雜有與連接點N2之電塵比較用 的臨限值、或與詳述於後的電力接收部20之間的通信信號 之解調、經該解調後的信號之解析等所需要的各種參數等。 201131926 一次側控制裝置11，係藉由未圖示的電路從直流電源 E供給有驅動用電力，且連接於直流電源β之負端子，並 且透過由二極體D1與電阻R2所構成的串聯電路，連接於 一次側的LC電路、與二極體及電阻R5之並聯電路之 間的連接點Ν2。亦即，在一次側控制裝置u，係將連接點 N2之電力進行半波整流而供給，而一次侧控制裝置1丨，係 可通過連接點N2從依一次線圈L1之振盪而產生的交變電 力之電壓波形中取得最大電壓等。 再者，在電力發送部1〇，係與電晶體TR2同樣，設 置有由NPN電晶體所構成的偏壓控制用電晶體tR3，而其 集極端子連接於MOS電晶體FET1之閘極端子，射極端子 連接於直流電源E之負端子(接地）。又偏壓控制用電晶體 TR3，係將其基極端子連接於一次側控制裝置n，且藉由 從一次側控制裝置Π供給的控制電流，可切換電流在集 極、射極間流動的導通、及電流不在集極、射極間流動的 切斷。 其次’針對電力接收部2〇加以說明。 電力接收部20，係具備：從電力發送部1〇接收交變 電力的諧振電路部22A;將交變電力（交流電力）轉換成直流 電力的整流電路部23A ;控制直流電力供給至負載的供給 控制部24A ;以及從供給控制部24A供給電力之作為負載 的電池BA。 a諧振電路部22A，係具有：二次線圈L2，其係輸出由 一次線圈L1之交變磁場所感應的交變電力；電容器C6(被 動元件）’其係並聯連接於該二次線圈L2，·以及串聯電路， 12 201131926 其係同樣並聯連接於二次_ L2，且由電⑼⑽被動元 件）與開閉器SW1所構成。藉此，諧振電路部22A，係在 開閉器SW1被開放時，構成作為由二次線圈L2盘電容器 斤構成的二次側之諧振電路(LC電路);而在開閉器_ 被關閉時，構成作為由二次線圈L2、電容器⑽電容器 C8之並聯連接而構成的二次侧之諧振電路(Lc電路此 在諧振電路部22A中，其諧振電路(LC電 依電则之有無而變更，且藉由該電路常 圈1次線圈L1接㈣交變電力之振幅產生變 化(調變）。亦即，藉由諧振電路之電財數的變更，可變 =收從-次線圈L1所供給之電力的二次線圈U之受電 ，被設定為可良好地獲得_成:;線 ，叙合性的值。另-方面，電容器叫係二由 二次線圈L2、電容器以及電容 值= 電路(LC電路)時，與切 人側之譜振 構成的諧振電路相較，二次==圈L2及電容器以所 輕合性係撕為較劣化與—次線圈L1之磁性 里^L2與—錢圈L1之磁絲合性優 此時’二次線圈L2可從一次線圈u接收較多電力 即，Γ一供方給面電較多的直流電力（電流）。 一次線圈L2與一次線圈u之磁性輕合 13 201131926 - a #的清況，電力接收部20接收電力的效率會降低，且 供二$圈乙2從一次線圈L1可接收的電力會減少。亦即， m ^ _ BA的直机電力（電流)也會減少。然而，如習知 劣介，4動會使二次線圈L2與一次線圈U之磁性耦合性 短而當與使電阻並聯連接於電池BA，或使直流電力 會受到S相較時，供給至電池BA的直流電力之減少就 之受電^t ί上述電力接收部20之構成中，二次線圈L2 力之電力2生變化時，不僅二次_L2所接收的交變電 圈U @ 7振幅會產生變化，就賴_合於二次線 生變化:_L1之交變電力的電力波形之振幅也會產 (電壓波形2按照在二次線圈U的交變電力之電力波形 電心1的振幅變化，產生於一次線圈L1#交變電力之 於電力Si顯形）的振幅也會產生變化。11此，在產生 =:接值)會發生變化。:== 與二次線圈τ" N2的電壓波形之振幅，係可在—次線圈L1 之，在”一，之間的磁性耦合優異時，被抑制得較小，反 會變大。線圈L1與一次線圈L2之間的磁性耦合劣化時 之二路部2从’係被供給產生於諧振電路部Μ 係且備 '击脚2之端子間的電力（電壓）。整流電路部2 3 A， 以及使經整2接於譜㈣路部2从的整流用二極體D3; 電容器二Ϊ體D3整流後的電力平滑化的平滑用 冓成作為將從諧振電路部22A輸入的交變電力 14 201131926 (交流電力）轉換成直流電力之所謂的半波整流電路。另 外，該整流電路部23A之構成，只不過是作為將交流電力 轉換成直流電力的整流電路之一例而己’並非被限定於此 構成，亦可具有使用二極體電橋的全波整流電路或其他周 知的整流電路之構成。 供給控制部24A’係具備：P通道M0S電晶體FET3， 其係切換整流電路部23A所整流的直流電力對電池BA的 供給與非供給；以及作為調變控制裝置的二次側控制裝置 21，其係按照電池BA之充電狀態而切換MOS電晶體ΡΈΤ3 之導通/切斷。MOS電晶體FET3，係其汲極端子連接於整 流電路部23A之正側，其源極端子連接於電池BA之正側， 其閘極端子連接於二次側控制裝置21。 二次侧控制裝置21，係以具有中央運算處理裝置 (CPU)、記憶裝置（非揮發性記㈣RQM、揮發性記憶體 RAM等）的微電腦4中心而構成，根據健存於記憶體的各 種資料及程式，判定電力接收部2〇之電池ba的充電狀 態’並且執行其充電量控制等的各種控制。另外，本實施 形態根據電池BA之充電狀態產生對電力發送部1〇之 ，並且也根據該職生的通信信錢諧振電路之 ，路=數產生變化，以進行使二次所接收的交變電 調變的控制。又’在非揮發性記憶體r〇m，事先保存有 ^池，之充電狀態、或充電量控制所需要的臨限值、 ，疋為了與後面所述的電力發送冑1G之間的通信信號之 產生、或基於輯信賴之調變等所需要的各種參數等。 在二次側控制裝置21，係分別連接有電池BA之正極 15 201131926 及負極，從電池BA接收驅動用之電力供給，並且二次側 控制裝置21，係可從電池BA之端子間電壓等來掌握電池 BA之充電狀態。又’二次側控制裝置21，係使按照電池 BA之充電狀態而使施加於M〇s電晶體之閘極端子 的控制電壓變化’以進行M〇s電晶體FET3之導通/切斷控 制。=如，因電池BA之端子間電壓比預先設定的充電狀 態判定用之臨限值還低’因而判斷對電池BA進行充電較 宜的情況下，對M0S電晶體FET3之閘極端子施加導通電 壓以使MOS電晶體FET3導通，從整流電路部23A供給直 机電力至電池BA。另-方面，因電池BA之端子間電壓比 上述充電狀態判定用之臨限值還高等，·因而判斷沒有必要 對電池BA進行充電的情況下，將未滿導通電壓之電遷施 加於MOS電阳體FET3之閘極端子，使廳s電晶體财3 :刀斷’不將來自整流電路部23A之直流電力供給至電池 又，在 之Η門裝置21’係連接有諧振電路部以 -pH別，'一次側控制裝置21係對開閉器SWl進 控：『藉由開閉器SW1來切換電容器c8之連接/ 彳1藉由二次側控制裝置21對開閉器SWl進 =:常數更，^ 之振幅改變，使―欠lz所接收的交變電力 二=，:::==對開閉器—^ 1(Κ) 線圈U之振盪週期（例如，頻率 100〜2〇驗)還長的週期、例如⑽㈣之通信用^ 16 201131926 期來進行，以避免與一次側之諧振電路(LC電路）的諧振 發生干涉。 其次，按照圖2至圖4說明依據從電力接收部2〇對 電力發送部10之通信信號之傳遞所進行的資訊傳遞。圖2 係顯示按照電力接收部20之受電特性而產生於交變電力 之電壓振幅變化的曲線圖；其中⑷顯示受電特性良好的情 況’⑻顯示受電特性劣化的情況。圖3係顯示在與圖2相 同的狀態下’比該圖2還長的時間的曲線圖；其中⑷顯示 又電特性良好的情況；⑼顯示受電特性劣化的情況。圖4 係顯不在比圖3還長的時間下，依據電力發送部1〇的信號 的接收狀態的曲線圖；其中（a)顯示電力發送部1〇之交變電 力之電壓變化的曲線圖；⑻顯示根據⑷之電壓波形振幅而 求出的信號。 首先，針對電力接收冑20巾的通信用之信號的調變 加以說明。 電力接收部20之二次侧控制裝置21，係在通常接收 電力時，為了使二次線圈L2與一次線圈L1之磁性耦合性 良好而將開閉器SW1予以開放，以效率良好地接收較多的 電力此時，如圖2(a)所示，在二次線圈L2係接收最大電 壓成為電壓VL2的交變電力。另—方面，在欲對電力發送 部通聯資訊時’為使二次線圈L2與一次線圈L1之磁 性輕合性從良好的狀態劣化，而將開閉器謂予以連接。 時如® 2(b)所示，在二次線圈L2係接收最大電壓成為 比電壓VL2還高之電壓VH2的交變電力。 另外’在® 1 —實施形態中，二次側控制裝置21係 201131926 以比一次線圈L1之振盪週期還長的週期之通信用的週 期，使二次線圈L2之受電特性改變。亦即，二次側控制裝 置21係於為了通信而將二次線圈L2之交變電力的最大電 壓設為電壓VL2時，如圖3(a)所示，會在成為通信用之週 期的一週期，例如從時間t0至時間tl之期間P1之間，使 開閉器SW1開放。又，二次側控制裝置21係於為了通信 而將二次線圈L2之交變電力的最大電壓設為電壓VH2 時，如圖3(b)所示，會在成為通信用之週期的一週期，例 如從時間tl至時間t2之期間P2之間，使開閉器SW1連接。 如此，藉由在每一通信用之週期中，使二次線圈L2之交變 電力的最大電壓選擇性地變化成電壓VL2與電壓VH2之其 中一，二次侧控制裝置21係可根據基於在電力發送部10 與電力接收部20之間共通的通信規則而產生的二值之通 信用信號，來調變二次線圈L2之交變電力。 其次，針對電力發送部10接收電力接收部20所產生 的通信用信號加以說明。如圖4(a)所示，電力發送部10之 一次線圈L1的交變電力之電壓振幅，係按照在電力接收部 20以通信用之週期而調變的交變電力之電壓振幅，以其該 最大值為電壓VL1或電壓VH1而呈現。例如，在通信用之 週期的一週期之期間P1，電力接收部20將交變電力之最 大電壓設為電壓VL2時，電力發送部10會在同期間P1使 一次線圈L1之交變電力的最大電壓成為電壓VL1。又，在 通信用之週期的一週期之期間P2，電力接收部20將交變 電力之最大電壓設為電壓VH2時，電力發送部10之一次 線圈L1會在同期間P2之期間使交變電力的最大電壓成為 18 201131926201131926 VI. Description of the invention: [Technical field of invention] Non-contact mode machine [Prior Art] This type of non-contact power supply device has been in contact with mobile phones or digital devices in recent years; portable type machine = A device that charges a non-cell (battery). In such a non-contact power supply device, the type of the device and the charger of the portable device and the corresponding portable device are respectively provided with a power supply; These two-wire electromagnetic induction enables the charging of the AC power from the portable portable unit (4) to be converted into DC power by the portable machine, thereby charging the secondary battery of the power source of the portable machine. However, with such a non-contact charging, it is possible to omit the electrical connection charging portable portable device!!_ connection terminal, but it is not easy and difficult to grasp the state of charge of the secondary battery by the charger. Manage its charge. Therefore, there has been proposed a technique for adjusting the state of charge of the secondary battery on the side of the portable device, and an example thereof is described in Patent Document 1. In the non-contact power supply device described in Patent Document 1, two coils having different numbers of coils are provided on the coil of the portable machine side, and different powers can be taken out from the connectors, and In a portable machine, when the secondary battery is charged, the power suitable for charging in this case can be taken out by the selection of the connectors corresponding to the state of charge of the battery. Therefore, although the amount of charge of the secondary battery can be adjusted on the side of the portable device, the following problem occurs: whether or not the charging is performed according to the portable device 4 201131926, the charger side will still The coil continues to supply a certain amount of power, causing a problem of wasted power. In this case, the conventional method also proposes a technique of grasping the state of charge of the secondary battery on the side of the charger, and adjusting the power supplied to the portable machine itself. Special offer 2 or special offer 3. First, the non-contact power supply device described in Patent Document 2 includes a power supply unit of a charger that performs oscillation control for a secondary system, and a load portion of the portable device that has a supply from the a secondary coil that is subjected to the electric power of the oscillating-secondary coil, and has a secondary battery connected in parallel to the secondary coil (the battery is further connected to the secondary coil in parallel, and is connected in parallel with the load control means for reading (4) Then, the load control means switches the opening and shorting of the secondary coil circuit in accordance with the state of charge of the secondary battery, so that the power supply characteristic with respect to the secondary coil, that is, the received power (power receiving) characteristic of the two-one coil is generated. Further, the two-contact power supply device described in Patent Document 3 has a signal transmission load circuit that is connected to the output of the secondary coil of the portable device that is supplied to the load so as to be able to be connected in parallel. The formed resistance method is controlled. Then, by the lightning/non-connection, the rotation of the wheel is changed to cause the secondary coil to be subjected to the entanglement. In the case, the secondary-coil of the secondary coil of the portable machine of the secondary machine is electromagnetically coupled to the secondary-coil of the charger, and the output of the secondary coil is controlled by the change of the output voltage of the secondary coil. Power supply to the primary coil. 丨日_公公告公开平(10)103号^文习Japanese Patent Gazette Patent No. _"No. [Patent Document 3] Japanese Patent (4) Gazette Unexamined Patent Publication No. 201131926 [Summary of the Invention] Problem: By adjusting the power supplied to the portable device based on the change in the power receiving characteristics of the charger on the portable device side and the so-called information from the portable device side, it is possible to reduce the power supply due to the supply. Power wasted to the corresponding portable device, etc. However, when the output of the secondary coil is short-circuited for information transmission, or the above-mentioned resistor is connected in parallel to the output of the secondary coil, it is impossible to avoid secondary An unnecessary waste of the output power of the coil, and the power supply cannot be stopped even in the load of the secondary battery or the like that receives the supply of the output power The present invention has been developed in view of such an actual situation, and an object thereof is to provide a method for sharing power supply when a power is supplied from a primary coil to a secondary coil in a non-contact manner. The circuit is a non-contact power supply device that can transmit information from the secondary coil to the primary coil with less power consumption. (Means for Solving the Problem) The first aspect of the present invention is a contactless power supply device. The apparatus includes: a primary coil that generates an alternating magnetic flux; and a resonant circuit unit that includes a secondary coil and is configured to be capable of changing a circuit constant that is generated in the primary coil a position at which the alternating magnetic flux intersects, the alternating current corresponding to the alternating magnetic flux is received in a non-contact manner from the primary coil; and the modulation control device changes the resonant circuit according to information to be transmitted to the primary coil a circuit constant that modulates the amplitude of the alternating power received by the secondary coil; and demodulation 6 201131926 The apparatus demodulates information transmitted to the primary coil from an amplitude change of alternating power generated in the primary coil in accordance with an amplitude change of the alternating power of the secondary coil. According to this configuration, the modulation control device changes the voltage amplitude of the alternating electric power received by the secondary coil in accordance with the information to be transmitted to the primary coil by changing the circuit constant of the resonant circuit portion. The demodulation control circuit acquires predetermined information transmitted from the modulation control device based on the amplitude change of the voltage of the primary coil generated by the amplitude change of the voltage of the secondary coil. Thereby, information from the modulation control device can be transmitted to the solution control device. For example, the primary coil and the demodulation control device are placed in a first machine such as a charger, and the secondary coil, the resonant circuit portion, and the modulation control device are placed in a second machine such as a portable device including a secondary battery or a load. In the case of the demodulation control device, the driving of the primary coil can be controlled in accordance with the condition of the secondary battery or the load connected to the modulation control device, and the electric power transmitted to the secondary coil can be appropriately controlled. Further, since the circuit constant of the resonant circuit portion including the secondary coil is changed, it is possible to avoid DC power converted into a state suitable for supply to the load after the secondary coil is received, and then adjusted by rectification or smoothing. Information is transmitted and consumed a lot. In other words, when the information is transmitted from the secondary coil to the primary coil, it is possible to suppress the change in the characteristics of the secondary coil by the load fluctuation with respect to the direct current power as is conventional, and the consumption should be supplied to the secondary battery or the like. Loaded DC power. Thereby, it is possible to reduce the influence of the information transmission on the supply of the DC power of the load, such as stopping the supply of power to the load or greatly reducing the amount of supply. In addition, since the circuit constant 201131926 of the resonant circuit portion including the secondary coil is changed, it is easier to adjust or change the power receiving characteristics of the secondary coil. Thereby, the design or adjustment of the power receiving characteristics of the resonant circuit portion can be easily performed, and the possibility of implementation or adoption of the non-contact power supply device having such a resonant circuit portion can be improved. A second aspect of the present invention is a power receiving portion that receives power in a non-contact manner from a power transmitting portion including a primary coil. The power receiving unit includes a resonant circuit unit including a secondary coil, and is configured to be capable of changing a circuit constant, and the secondary coil is at a position opposite to a parent magnetic flux generated in the primary coil. The alternating current corresponding to the alternating magnetic flux is received in a non-contact manner from the primary coil; and the modulation control device changes the circuit constant of the harmonic portion according to the information to be transmitted to the primary coil, Thereby, the amplitude of the parental power received by the aforementioned secondary coil is modulated. According to this configuration, it is possible to provide a power receiving portion suitable for the non-contact power supply device of the first aspect described above. [Embodiment] (First Embodiment) Hereinafter, a first embodiment in which a non-contact power supply device of the present invention is embodied will be described with reference to the drawings. Fig. 1 is a schematic view showing a schematic configuration of an electric circuit of the contact type power supply device of the first embodiment. As shown in Fig. 1, the non-contact power supply device is roughly provided with a power transmission unit 10 and a power reduction unit 2A. First, explain the f-force transmission. The power transmission unit 10 has a primary coil L1, and a resonance capacitor C4 is connected in parallel to the primary line 201131926, L1 to constitute a primary side lc circuit: a primary side LC circuit, a parallel circuit of a diode D2 and a resistor R5. The N-channel MOS transistor FET1 and the resistor R7, which are switching elements, are connected in series to form a series circuit, and the series circuit is connected in parallel to the direct current source E. Further, in the resistor 7, a RC circuit composed of a resistor 6 and a battery C5 connected in series is connected in parallel. Further, in the DC power source E, a capacitor C1 is connected in parallel, and a series circuit composed of a starting resistor R1 and a capacitor C2 is also connected in parallel. The connection point N1 between the start-up resistor R1 and the capacitor C2 is connected to the M〇s transistor FET1 terminal through a series circuit composed of a feedback coil 13 and a resistor R3 which constitute a resonant transformer together with the primary coil L. Further, the power transmitting unit 10 has a transistor TR2 for bias control by a ΝρΝ transistor, and its collector terminal is connected to the gate terminal of the M〇s transistor FET1, and the emitter terminal is connected to the DC terminal. The negative terminal of the power supply e = ground and the base terminal of the bias control transistor TR2 is connected to the connection point N3 of the resistor R6 constituting the RC circuit and the capacitor C5. The power transmission unit 1G configured as described above is a self-excited electric power of a single stone, and a spectrally-type converter circuit is a so-called voltage resonance circuit, and by this, the subtraction operation of the pressure spectrum circuit can be performed from time to time. The coil u produces a certain frequency: the parent flux. Therefore, the oscillation operation will be briefly described below. The power transmission unit 10 supplies a power supply voltage from the DC power supply, for example, 5V, via the start resistor R1, the feedback coil L3, and the resistor R3 to the voltage of the gate to the gate terminal of the FET1. When the voltage applied to the gate terminal of the swelled transistor Xiao 1 rises to a current flowing between the gate and the source of the 201131926 MOS transistor FET1, the mqs transistor FET1 is turned on and the current is turned on. Flows between the bungee and the source. Thereby, a current flows in the primary coil L1 to generate a magnetic flux, and a feedback coil L3 that receives the magnetic flux generates a voltage for maintaining the ON voltage of the MOS transistor FET1, so that the gate voltage of the MOS transistor FET1 is maintained at The turn-on voltage is such that the on state of the MOS transistor FET1 is maintained. When current flows between the drain and the source by the conduction of the MOS transistor FET1, the voltage generated in the resistor R7 is applied to the RC circuit composed of the resistor R6 and the capacitor C5, and the Rc circuit, The voltage between the terminals of the capacitor C5 rises as the capacitor C5 is charged. As the voltage between the terminals rises, the voltage at the connection point N3 between the resistor R6 of the RC circuit and the capacitor C5 rises, and the voltage at the base terminal of the bias control transistor TR2 connected to the connection point N3 rises. The bias control transistor TR2 is such that when the voltage of the base terminal rises, a current flows between the collector and the emitter, and a current flows between the collector and the emitter, and the collector and the emitter are caused. The potential difference between the poles is reduced and becomes substantially "〇". Thereby, the voltage of the collector terminal of the bias control transistor TR2 is lowered to the level of the negative terminal (ground) of the DC power source E, and the voltage of the gate terminal of the transistor FET connected to the collector terminal is also It will become the level of the ground, and the MOS transistor FET1 will be in a state where the gate and the source do not flow. m When the MOS transistor FET1 is turned off, since the magnetic flux generated by the primary coil li is reduced, 'the voltage direction of the feedback coil u changes to generate the sustain cut-voltage' and the voltage is applied to the gate terminal. The cutting of the MOS transistor FET1 is maintained. Further, when the M〇s transistor ρΕτι 201131926 is cut, the current flowing in the primary coil L1 flows to the resonance capacitor C4', and the [匸 circuit composed of the primary coil L1 and the resonance capacitor €4 resonates. With the resonance of the LC circuit, the voltage on the drain side of the MOS transistor FET1 rises to reach a peak value, and then falls. At this time, the same voltage fluctuation as that of the primary coil u occurs also between the terminals of the feedback coil L3. That is, at the first terminal of the feedback coil L3 coupled to the gate terminal of the MOS transistor FET1, the voltage drops to a peak value and then rises. Then, a short time later, a voltage at which the MOS transistor FET1 can be turned on is generated at the first terminal of the feedback coil L3, and the MOS transistor FET1 is turned on again. According to the repetitive operation of the ON and OFF of the MOS transistor FET1, the MOS transistor FET1 can be switched, and the primary coil L1 can be oscillated by the switching. Further, in the first embodiment, the frequency at which the M s transistor FET 1 is switched, that is, the frequency at which the primary coil L1 oscillates is adjusted to be 1 kHz (kilohertz) to 200 kHz. Further, the power transmission unit 1 is provided with a primary side control device 11 as a demodulation control device. The primary side control device u is configured mainly by a microcomputer having a central processing unit (CPU), a memory device (non-volatile memory R〇M, a volatile memory RAM, etc.), and is stored in various types of memory devices. The data and the program execute various controls such as oscillation control of the LC circuit of the power transmitting unit 10. Further, in the first embodiment, the communication signal ' from the power receiving unit 20 is demodulated and the demodulated signal is analyzed, and the oscillation of the LC circuit is controlled based on the analysis result. Further, in the non-volatile 1 memory ROM towel, the threshold value for comparison with the electric dust of the connection point N2 or the demodulation of the communication signal between the power receiving unit 20 and the detailed description is described. Various parameters required for analysis of the demodulated signal, and the like. 201131926 The primary side control device 11 is supplied with driving power from a DC power supply E by a circuit (not shown), is connected to a negative terminal of the DC power supply β, and transmits a series circuit composed of a diode D1 and a resistor R2. It is connected to the connection point Ν2 between the LC circuit on the primary side and the parallel circuit of the diode and the resistor R5. In other words, in the primary side control device u, the electric power at the connection point N2 is half-wave rectified and supplied, and the primary side control device 1A is an alternating current generated by the oscillation of the primary coil L1 through the connection point N2. The maximum voltage is obtained in the voltage waveform of the power. Further, in the power transmission unit 1A, similarly to the transistor TR2, a bias control transistor tR3 composed of an NPN transistor is provided, and its collector terminal is connected to the gate terminal of the MOS transistor FET1. The emitter terminal is connected to the negative terminal (ground) of the DC power source E. Further, the bias control transistor TR3 is connected to the primary side control device n, and the conduction current supplied from the primary side control device , can switch the conduction of the current between the collector and the emitter. And the current is not cut off between the collector and the emitter. Next, the power receiving unit 2 will be described. The power receiving unit 20 includes a resonant circuit unit 22A that receives alternating power from the power transmitting unit 1A, a rectifier circuit unit 23A that converts alternating power (AC power) into DC power, and controls supply of DC power to the load. The control unit 24A and the battery BA as a load that supplies electric power from the supply control unit 24A. The a resonant circuit portion 22A has a secondary coil L2 that outputs alternating power induced by an alternating magnetic field of the primary coil L1, and a capacitor C6 (passive element) that is connected in parallel to the secondary coil L2. · And series circuit, 12 201131926 The system is also connected in parallel to the secondary _ L2, and is composed of electric (9) (10) passive components) and the shutter SW1. Thereby, the resonant circuit unit 22A constitutes a secondary side resonant circuit (LC circuit) constituted by the secondary coil L2, and when the switch _ is closed, the resonant circuit unit 22A is configured to be opened. As a secondary side resonant circuit including a secondary coil L2 and a capacitor (10) capacitor C8 connected in parallel (Lc circuit, in the resonant circuit unit 22A, the resonant circuit (the LC power is changed depending on the presence or absence of the battery) The amplitude of the alternating power of the primary coil primary coil L1 is changed (modulated). That is, the power supplied by the secondary coil L1 is variable by the change of the electrical quantity of the resonant circuit. The secondary coil U is charged, and is set to obtain a good value of _ into:; line, and synthesizing. On the other hand, the capacitor is called the secondary coil L2, the capacitor, and the capacitance value = circuit (LC circuit) When compared with the resonant circuit formed by the spectrum of the cut side, the secondary == circle L2 and the capacitor are torn to the more deteriorated and the magnetic of the secondary coil L1 ^L2 and the money circle L1 The magnetic wire is excellent. At this time, the secondary coil L2 can receive more power from the primary coil u. Γ 供 供 供 供 供 供 供 供 供 供 供 供 供 供 供 供 供 供 供 供 供 供 供 供 供 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 The power that can be received from the primary coil L1 will be reduced. That is, the direct power (current) of m ^ _ BA will also decrease. However, as is known to be inferior, 4 moves will cause the secondary coil L2. The magnetic coupling with the primary coil U is short, and when the resistance is connected in parallel to the battery BA, or the direct current power is compared with the S phase, the reduction of the direct current power supplied to the battery BA is received by the power receiving unit. In the configuration of 20, when the electric power 2 of the secondary coil L2 changes, not only the amplitude of the alternating current U @ 7 received by the secondary _L2 changes, but also the change of the secondary line: _L1 The amplitude of the power waveform of the alternating power is also generated (the voltage waveform 2 changes according to the amplitude of the power waveform core 1 of the alternating power of the secondary coil U, and is generated by the primary coil L1# alternating power to the power Si.) The amplitude will also change. 11 this will occur when generating =: value) The amplitude of the voltage waveform of the secondary coil τ" N2 can be suppressed to be small when the magnetic coupling between the first and second coils L1 is excellent, and the reverse is large. When the magnetic coupling between the coil L1 and the primary coil L2 is deteriorated, the two-way portion 2 is supplied with electric power (voltage) generated between the terminals of the 'resonating circuit unit' and the 'foot 2'. The rectifying circuit unit 2 3 A and the rectifying diode D3 that is connected to the spectrum (four) path unit 2; the smoothing of the power smoothing after the capacitor body D3 is rectified is performed as the alternating input from the resonance circuit unit 22A. Power 14 201131926 (AC power) is a so-called half-wave rectifier circuit that converts DC power into DC power. In addition, the configuration of the rectifier circuit unit 23A is merely an example of a rectifier circuit that converts AC power into DC power, and is not limited to this configuration, and may have a full-wave rectifier circuit using a diode bridge. Or other well-known rectifier circuits. The supply control unit 24A' includes a P-channel MOS transistor FET 3 that supplies and supplies non-supply of DC power rectified by the switching rectifier unit 23A to the battery BA, and a secondary-side control device 21 as a modulation control device. It switches the on/off of the MOS transistor ΡΈΤ3 in accordance with the state of charge of the battery BA. The MOS transistor FET 3 has its 汲 terminal connected to the positive side of the rectifying circuit portion 23A, its source terminal connected to the positive side of the battery BA, and its gate terminal connected to the secondary side control device 21. The secondary side control device 21 is configured by a microcomputer 4 center having a central processing unit (CPU), a memory device (non-volatile memory (four) RQM, a volatile memory RAM, etc.), and is based on various materials stored in the memory. The program determines the state of charge of the battery ba of the power receiving unit 2 and performs various controls such as the amount of charge control. Further, in the present embodiment, the power transmission unit 1 is generated in accordance with the state of charge of the battery BA, and the number of the roads is changed according to the communication signal resonance circuit of the employee's life to perform the exchange of the second reception. Control of electrical modulation. In addition, in the non-volatile memory r〇m, the state of charge, or the threshold value required for charge amount control, is stored in advance, and the communication signal is transmitted between the 胄1G and the power transmission described later. The various parameters required for the generation, or the modulation based on the trust. In the secondary side control device 21, the positive electrode 15 201131926 and the negative electrode of the battery BA are respectively connected, and the power supply for driving is received from the battery BA, and the secondary side control device 21 can be connected from the voltage between the terminals of the battery BA or the like. Master the charging status of the battery BA. Further, the secondary side control device 21 changes the control voltage applied to the gate terminal of the M?s transistor in accordance with the state of charge of the battery BA to perform on/off control of the M?s transistor FET3. = For example, since the voltage between the terminals of the battery BA is lower than the threshold value for determining the state of charge of the preset state, and thus it is judged that the battery BA is preferably charged, the ON voltage is applied to the gate terminal of the MOS transistor FET3. The MOS transistor FET 3 is turned on, and the straight-line power is supplied from the rectifier circuit unit 23A to the battery BA. On the other hand, since the voltage between the terminals of the battery BA is higher than the threshold value for determining the state of charge, and thus it is determined that it is not necessary to charge the battery BA, the relocation of the under-voltage is applied to the MOS battery. The gate terminal of the male FET 3 causes the hall s transistor to have a power of 3: the cutter does not supply the DC power from the rectifier circuit portion 23A to the battery, and the gate device 21' is connected to the resonance circuit portion to -pH Further, the primary side control device 21 controls the switch SW1: "The connection of the capacitor c8 is switched by the shutter SW1 / 彳1 by the secondary side control device 21 to the switch SW1 =: constant, ^ The amplitude is changed so that the alternating power received by the "llow lz" =,:::== is open to the switch - ^ 1 (Κ) The period of the oscillation of the coil U (for example, the frequency of 100~2) is still long. For example, the communication of (10) and (4) is performed by the period of 16 201131926 to avoid interference with the resonance of the primary side resonant circuit (LC circuit). Next, information transmission based on the transmission of the communication signal from the power receiving unit 2 to the power transmitting unit 10 will be described with reference to Figs. 2 to 4 . Fig. 2 is a graph showing changes in voltage amplitude generated in the alternating power in accordance with the power receiving characteristics of the power receiving unit 20; (4) showing that the power receiving characteristics are good, (8) shows that the power receiving characteristics are deteriorated. Fig. 3 is a graph showing the time longer than Fig. 2 in the same state as Fig. 2; wherein (4) shows a case where the electrical characteristics are good; and (9) shows a case where the power receiving characteristics are deteriorated. 4 is a graph showing a state of reception of a signal according to the power transmitting unit 1〇 at a time longer than FIG. 3; wherein (a) is a graph showing a voltage change of the alternating power of the power transmitting unit 1; (8) A signal obtained based on the amplitude of the voltage waveform of (4) is displayed. First, the modulation of the signal for communication of the power receiving device will be described. The secondary side control device 21 of the power receiving unit 20 opens the shutter SW1 in order to improve the magnetic coupling between the secondary coil L2 and the primary coil L1 when the power is normally received, and efficiently receives a large number of efficiently. At this time, as shown in FIG. 2(a), the secondary coil L2 receives the alternating electric power whose maximum voltage becomes the voltage VL2. On the other hand, when the power transmission unit communication information is desired, the switch is connected so that the magnetic compatibility between the secondary coil L2 and the primary coil L1 deteriorates from a good state. As shown in Fig. 2(b), the secondary coil L2 receives the alternating power of the voltage VH2 whose maximum voltage is higher than the voltage VL2. Further, in the embodiment of the invention, the secondary side control device 21, 201131926, changes the power receiving characteristics of the secondary coil L2 with a period of communication longer than the oscillation period of the primary coil L1. In other words, when the maximum voltage of the alternating power of the secondary coil L2 is set to the voltage VL2 for communication, the secondary side control device 21 is one of the cycles for communication as shown in FIG. 3(a). The cycle, for example, between the time period T0 and the time period P1, opens the shutter SW1. Further, when the maximum voltage of the alternating electric power of the secondary coil L2 is set to the voltage VH2 for communication, as shown in FIG. 3(b), the secondary side control device 21 is in a cycle of the communication cycle. For example, between the time t1 and the time period T2, the shutter SW1 is connected. Thus, by selectively changing the maximum voltage of the alternating power of the secondary coil L2 to one of the voltage VL2 and the voltage VH2 in each communication cycle, the secondary side control device 21 can be based on The binary communication signal generated by the communication rule common between the power transmission unit 10 and the power receiving unit 20 modulates the alternating power of the secondary coil L2. Next, the power transmission unit 10 receives the communication signal generated by the power receiving unit 20 to explain. As shown in Fig. 4 (a), the voltage amplitude of the alternating power of the primary coil L1 of the power transmitting unit 10 is based on the voltage amplitude of the alternating power modulated by the power receiving unit 20 for the period of communication. This maximum value is presented as voltage VL1 or voltage VH1. For example, when the power receiving unit 20 sets the maximum voltage of the alternating power to the voltage VL2 during the period P1 of one cycle of the communication cycle, the power transmitting unit 10 maximizes the alternating power of the primary coil L1 in the same period P1. The voltage becomes the voltage VL1. In the period P2 of one cycle of the communication cycle, when the power receiving unit 20 sets the maximum voltage of the alternating power to the voltage VH2, the primary coil L1 of the power transmitting unit 10 causes the alternating power during the same period P2. The maximum voltage becomes 18 201131926
= 的電堡VH1。同樣地，在f力接M 2Q Ρ6 設為電壓VL2的各期間P3、P4、 電力發迗部10之-次線圈L1的交變電力之最大電壓 會分別成為電壓VL1，而在電力接收部2〇將交變電力之 大電壓設>為電壓的期間ps，電力發送部1〇之一次線 圈U的父變電力之最大電壓會成為電壓Vm。 ’ 11 電並藉由將所取得的最大電 二二ί1與電壓VH1之間的信號解調用之臨 夠所示’帽VL1解調為信號位 1解調為㈣位準H。透過在通信用之週 ==調後之信號等的處理，藉由電力接收部20而 電力發送…接 示的波形’被表示為r_U1〇號1外=(= =Γ:力接收部2。之間二== = ===，元、一 置，二上下：致依果據，一實施形態 的資t使裝置21 ’係根據欲傳遞至—次線圈L1 8 § 、電路部22由二次線圈L2所接收的交變 幅之產4變:二根據伴隨該電壓之振幅變化 電壓變化，使—次側控制裝置11取得從 19 201131926 二次側控制裝置21傳遞來的資訊。藉此，將來自二次側控 制裝置21之資訊傳遞至一次侧控制裝置11，例如一次側 控制裝置11可按照連接於二次側控制裝置21之二次電池 或負載等的狀況而控制一次線圈L1之驅動，以適當地控制 傳遞至二次線圈L2的電力。 (2) 又，由於形成變更包含二次線圈L2的諳振電路部 22A之電路常數的構成，所以可避免在二次線圈L2受電 後，為了傳遞資訊而大量消耗藉由整流電路部23A經由整 流、平滑化等的調整而轉換成適於對負載之供給的狀態之 直流電力。亦即，從二次線圈L2傳遞資訊至一次線圈L1 之際，可抑制如習知般地因利用對於直流電力之負載變動 使二次線圈之特性產生變化，而消耗掉應供給至二次電池 等負載的直流電力。藉此，可減輕資訊傳遞對於供給直流 電力至負載帶來不良影響，例如停止供給電力至電池BA 等負載或大幅減少供給量等之虞。 (3) 再者，由於使包含二次線圈L2的諧振電路部22A 之電路常數產生變化，所以也容易進行賦予二次線圈L2 之受電特性的調整、變更等。藉此，就諧振電路部22A而 言，可輕易進行該受電特性之設計、調整等，也可提高具 有該種諧振電路部22A之非接觸式供電裝置的實施或採用 之可能性。 (4) 可藉由依開閉器SW1進行的電容器C8之連接/非 連接而使基於二次線圈L2與電容器C6的諧振電路部22A 之電路常數、即二次線圈L2所接收的交變電力之振幅改 變。藉此，可藉由少數的開閉器SW1輕易地進行二次線圈 20 201131926 L所接收的交變電力之振幅變更。 (5)由於可藉由電容器C6及電容器C8之組合來設定 二次線圈L2所接收的交變電力之振幅所以可輕易地進行 該交變電力之振幅變更。 (第二實施形態） 其次，按照圖5說明將本發明之非接觸式供電裝置具 體化的第二實施形態。圖5係針對第二實施形態之非接觸 式供電裝置的電力接收部20之電路構成而顯示的示意圖。 另外，第二實施形態之電力接收部20之諧振電路部 22B的構成係與先前的第一實施形態不同，但是除此以外 的構成則為相同。因此，第二實施形態中是主要針對與第 一實施形態之不同點加以說明，而關於與第一實施形態相 同的構成則附記相同的元件符號，且為了方便說明起見， 省略詳細說明。 如圖5所示，電力接收部20係具備：從電力發送部 10接收交變電力的諳振電路部22B;將交變電力（交流電力） 轉換成直流電力的整流電路部23B ;控制直流電力供給至 負載的供給控制部24B ;以及作為從供給控制部24B供給 電力之負載的電池BA。另外，由於第二實施形態之整流電 路部23B及供給控制部24B係分別與第一實施形態之整流 電路部23A及供給控制部24A相同的構成，所以省略其詳 細說明。 諧振電路部22B係具有：輸出由一次線圈L1之交變 磁場所感應的交變電力之二次線圈L2 ;並聯連接於該二次 線圈L2之由電容器C6與開閉器SW2所構成的串聯電路； 21 5 201131926 ‘ * 以及同樣地並聯連接於該二次線圈L2之由電容器c8與開 閉器SW1所構成的串聯電路。藉此，諧振電路部灿係 開閉器SJV:開放且開閉器SW2關閉時，構成由二次線圈 L2與電容器C6所構成的二次侧之諳振電路(lc電另 外’開閉器swi關閉且開閉器SW2開放時，構二a 線圈L2與電容器C8所構成的二次側之譜 一$= The electric castle VH1. Similarly, in the respective periods P3 and P4 in which the f-force connection M 2Q Ρ6 is set to the voltage VL2, and the maximum voltage of the alternating power of the secondary coil L1 in the power generating unit 10, the voltages VL1 become the voltage VL1, respectively, and the power receiving unit 2 When the voltage of the alternating electric power is set to gt, the maximum voltage of the parasitic power of the primary coil U of the power transmitting unit 1 turns into the voltage Vm. The '11' is demodulated to the signal level 1 by the demodulation of the signal between the maximum power 222 and the voltage VH1 to the (four) level H. The waveform "transmitted by the power receiving unit 20 and transmitted by the power receiving unit 20 is indicated as r_U1 〇 1 outside = (= = 力: force receiving unit 2). Between two == = ===, yuan, one set, two up and down: to the basis of evidence, an embodiment of the capital t makes the device 21 ' according to the order to pass to the secondary coil L1 8 §, the circuit part 22 by two The change of the alternating amplitude received by the secondary coil L2 is changed by two: the secondary side control device 11 obtains the information transmitted from the secondary side control device 21 of 19 201131926 based on the voltage change with the amplitude of the voltage. The information from the secondary side control device 21 is transmitted to the primary side control device 11, and for example, the primary side control device 11 can control the driving of the primary coil L1 in accordance with the condition of the secondary battery or the load connected to the secondary side control device 21. In order to appropriately control the electric power transmitted to the secondary coil L2. (2) Since the circuit constant of the oscillating circuit unit 22A including the secondary coil L2 is changed, it is possible to prevent the secondary coil L2 from being charged. Large amount of consumption by the rectifier circuit in order to transmit information 23A is converted into DC power in a state suitable for supply to the load by adjustment such as rectification, smoothing, etc. That is, when information is transmitted from the secondary coil L2 to the primary coil L1, it is possible to suppress the use as usual. The load variation of the DC power changes the characteristics of the secondary coil, and consumes DC power to be supplied to a load such as a secondary battery, thereby reducing the adverse effect of information transmission on supplying DC power to the load, such as stopping. The electric power is supplied to the load such as the battery BA or the supply amount is greatly reduced. (3) Further, since the circuit constant of the resonant circuit unit 22A including the secondary coil L2 is changed, the secondary coil L2 is easily applied. By adjusting, changing, and the like of the power receiving characteristics, the resonant circuit unit 22A can easily design, adjust, and the like of the power receiving characteristics, and can improve the implementation of the contactless power supply device having the resonant circuit unit 22A or The possibility of adoption (4) The resonance based on the secondary coil L2 and the capacitor C6 can be made by the connection/non-connection of the capacitor C8 according to the shutter SW1 The circuit constant of the road portion 22A, that is, the amplitude of the alternating power received by the secondary coil L2 is changed. Thereby, the amplitude of the alternating power received by the secondary coil 20 201131926 L can be easily performed by a small number of shutters SW1. (5) Since the amplitude of the alternating power received by the secondary coil L2 can be set by the combination of the capacitor C6 and the capacitor C8, the amplitude of the alternating power can be easily changed. (Second embodiment) A second embodiment in which the non-contact power supply device of the present invention is embodied will be described with reference to Fig. 5. Fig. 5 is a schematic view showing the circuit configuration of the power receiving unit 20 of the non-contact power supply device according to the second embodiment. The configuration of the resonant circuit portion 22B of the power receiving unit 20 of the second embodiment is different from that of the first embodiment, but the other configurations are the same. Therefore, in the second embodiment, the differences from the first embodiment will be mainly described, and the same components as those in the first embodiment will be denoted by the same reference numerals, and the detailed description will be omitted for convenience of explanation. As shown in FIG. 5, the power receiving unit 20 includes a resonance circuit unit 22B that receives alternating power from the power transmission unit 10, and a rectifier circuit unit 23B that converts alternating power (AC power) into DC power; and controls DC power. The supply control unit 24B supplied to the load; and the battery BA as a load for supplying electric power from the supply control unit 24B. In addition, since the rectifier circuit unit 23B and the supply control unit 24B of the second embodiment have the same configurations as those of the rectifier circuit unit 23A and the supply control unit 24A of the first embodiment, detailed description thereof will be omitted. The resonant circuit unit 22B has a secondary coil L2 that outputs alternating power induced by the alternating magnetic field of the primary coil L1, and a series circuit that is connected in parallel to the secondary coil L2 by the capacitor C6 and the switch SW2; 21 5 201131926 ' * and a series circuit composed of a capacitor c8 and a switch SW1 connected in parallel to the secondary coil L2 in the same manner. When the resonant circuit unit can open the switch SJV and the shutter SW2 is closed, the second side of the resonant circuit is composed of the secondary coil L2 and the capacitor C6 (the lc is additionally turned on and the switch swi is closed and opened and closed). When the SW2 is open, the spectrum of the secondary side formed by the second coil L2 and the capacitor C8 is one.
雪絲電路部22Β，係可藉由連接於二^圈= 電（電谷器C6或電容器C8)，來變更該譜振電路(LC ’且藉由該電路常數之變更，使二次線圈 L2從-次_ L1純的交變電力之振 又，產生於諧Γ電路部^二;欠線圈^之受電特性變更。 佩电峪谇i2B之二次線圈u之 力（電壓）係被供給至整流電路部23β。 、 另外，第二實施形態令，電容器C6之值，係於藉由 =次線圈L2與電容器C6形成二次側线振電lc、藉由 時，被狀為二次線圏L2與― (=) 先前之由二次=路)時’與 較，被設定為二次線圈L2虚一 冓成的譜振電路相 劣化的值。 2與讀圈L1之磁軸合性較 考SW1、stf’l裝置21係連接於諧振電路部22B之開門 連仃的電容器C8之連接/非連接、 22 201131926 ，依開閉器SW2進行的f容器C6之連接/非連接。亦即， 藉由二次側控制裝置21開閉控制各開閉器SW1、SW2,可 變更諧振電路部22B之二次㈣雜電路(lc電路)之電路 常數，藉此，二次線圈乙2之交變電力的電壓波形之最大電 壓，可變化成不同的電壓VL2或電壓VH2。隨之，一次線 圈L1之交變電力以振幅，可變化成例如電壓VL1或電壓 VH1 °另外’第二實施形態中係開閉控制各開閉器SW1、 SW2使開閉器SW1、SW2之至少一者被關閉，藉此控制電 路常數在預定之範圍内變化。 又’依二次側控制裝置21進行的開閉器SW1之開閉 控制，係與第一實施形態同樣地，以比一次線圈Li之振盪 週期還長的週期、例如10Hz(100ms)之通信用的週期來進 行’以不與二次側之諧振電路(LC電路）之諧振發生干涉。 如此’藉由在每一通信用之週期中，使二次線圈L2 之交變電力的最大電壓，選擇性地變化成例如電壓VL2與 電壓VH2之其中之—，二次側控制裝置21係可根據基於 通信規則而產生的二值之通信用信號，來調變二次線圈L2 之交變電力。然後，電力發送部係從經調變後的一次線 圈L1之最大電壓中’藉由一次侧控制裝置u解調通信信 號，取得依電力接收部2〇所產生的通信信號之内容。 如以上說明’依第二實施形態也可獲得與先前之第一 實施形態之前述（1)至（5)之效果同等或是準同等於此的效 果，並且可獲得如下列的效果。 (6)在並聯連接於負載的電容器C8及電容器C6分別 設置開閉器SW卜SW2。藉此可根據電容器C8或電容器 3 23 201131926 C6 ’使諧振電路部22B之電路常數’即二次線圈l2之受 電特性改變。 (第三實施形態） 其次，按照圖6說明將本發明之非接觸式供電裝置具 體化的第三實施形態加以說明。圖6係針對第三實施形態 之非接觸式供電裝置的電力接收部2〇之電路構成予以顯 示的示意圖。 另外，第3第三實施形態之電力接收部2〇的諧振電 路部22C之構成係與先前之第1第一實施形態不同，但是 除此以外的構成則為相同。因此’第3第三實施形態中主 要是針對與第1第一實施形態之不同點加以說明，而關於 與第1第一實施形態相同的構成則附記相同的元件符號， 且為了方便說明起見，省略詳細說明。 如圖6所示，電力接收部20係具備：從電力發送部 1〇接收交變電力的諧振電路部22C;將交變電力（交流電力） 轉換成直流電力的整流電路部23C;控制直流電力供給至 負載的供給控制部24C ;以及作為從供給控制部 24C供給 電力之負載的電池BA。另外，由於第三實施形態之整流電 路部23C及供給控制部24C係分別與第—實施形態之整流 ，路部23A及供給控制部24A為相同的構成，所以嗜略其 詳細說明。 諧振電路部22C係具有輸出由一次線圈L1之交變磁 =斤感應之交變電力的二次線圈L2，且在該二次線圈L2 聯連接有-並聯電路，該並聯電路係包含由電容器C6 、開閉器SW2所構成的串聯電路、及由電容器C8與開閉 24 201131926 器SW1所構成的串聯電路。藉此，譜振電路部Me係在 閉器SW1開放且開閉器SW2關閉時，構成作為由二次、= 圈L2與電容器C6所構成的二次側之諧振電路(LC電路v'。 又，在開閉器SW1關閉且開閉器SW2開放時，構成作為 由二次線圈L2與電容器C8所構成的二次側之諧振電路 (LC電路）。藉此，諧振電路部22(：係可藉由連接於二士 圈L2之電容器（電容器C6或電容器C8)，來變更 = 路(LC電路)之電路常數，且藉由該電路常數之變更而^ 次線圈L2從-次線圈L1接收的㈣電力之振幅產: (調變亦即’藉由諧振電路之電路常數的變更 收從一次線圈L1供給之電力的二次線圈L2之受電特^ 更。又，產生於諧振電路部22c之二次侧的Lc電：】 子間的電力（電壓）係被供給至整流電路部况。之缒 —f外，第三實施形態中，電容器C6之值，係於^ 一次線圈L2與電交哭（^6报士、 u '、；精由 時，, 成二次側之譜振電路(LC電路） 砰被汉疋為二次線圈L2與一+砼圃τ 电唂） 得良好的值n面，電容器C8® U之磁性輕合性變 圈L2與電容器C8形成二次側之^ ’係於藉由二次線 先前之由二次線圈L2及電容/振電路(LC電路)時，與 較’被設定為二次線圈L2與—㈣成的諧振電路相 劣化的值。 人線圈L1之磁性耦合性較 二次側控制裝置21係連 器顯、請2，個別地開閉=振電路部22C之開閉 別地切換依_器SW1進行 ^閉器SW卜SW2以個 及依開閉器SW2進行的電 C8之連接/非連接、 ° 之連接/非連接。亦即， 201131926 f由二次側控制裴置21開閉控制各開閉器SW1、SW2,可 邊更諧振電路部22C之二次側的諧振電路(LC電路)之電路 二數，藉此，二次線圈L2之交變電力的電壓波形之最大電 壓’可變化成不同的電壓VL2或電壓VH2。隨之，一次線 圈L1之交變電力的振幅，可變化成例如電壓VL1或電壓 VH1 °另外’第三實施形態中係開閉控制各開閉器swi、 SW2使開閉器SW1、SW2之至少一者被關閉，藉此控制電 路常數在預定之範圍内變化。 又’依二次側控制裝置21進行的開閉器SW1之開閉 控制，係與第一實施形態同樣地，以比一次線圈L1之振盪 週期還長的週期、例如l〇Hz( 100ms)之通信用的週期來進 行，以不與二次侧之諧振電路(LC電路)之諧振發生干涉。 如此，藉由在每一通信用之週期中，使二次線圈L2 之父變電力的最大電壓，選擇性地變化成例如電壓VL2與 電壓VH2之其中之一’二次侧控制裝置21係可根據基於 通信規則而產生的二值之通信用信號，來調變二次線圈L2 之交變電力。然後，電力發送部10係從經調變後的一次線 圈L1之最大電壓中，藉由一次侧控制裝置11解調通信信 號，取得依電力接收部20所產生的通信信號之内容。 如以上說明，依第三實施形態也可獲得與先前之第一 實施形態之前述（1)至（5)之效果同等或是準同等於此的效 果，並且可獲得如下列的效果。 (7)在串聯連接於負載的電容器C8及電容器C6分別 設置開閉器SW1、SW2。藉此可根據電容器C8或電容器 C6，使諧振電路部22C之電路常數，即二次線圈L2之受 26 201131926 電特性改變。 (第四實施形態） 其次，按照圖7說明將本發明之非接觸式供電裝置具 體化的第四實施形態。目7係針對第四實施形態之^接觸 式供電裝置的電力接收部20之電路構成而顯示的示意圖。 另外，第四實施形態之電力接收部之譜振電路部 22D的構成係與先前之第一實施形態不同，但是除此以外 j構成則為相同。因此，第四實施形態中主要是針對與第 一實施形態之不同點加以說明，而關於與第一實施形態相 同的構成則附記相同的元件符號，且為了方便說明起見， 省略詳細說明。 如圖7所示，電力接收部20係具備：從電力發送部 10接收交變電力的諧振電路部22D;將交變電力（交流電力） 轉換成直流電力的整流電路部23D ;控制直流電力供給至 負載的供給控制部24D ;以及作為從供給控制部24D供給 電力之負載的電池BA。另外，由於第四實施形態之整流電 路部2 3 D及供給控制部2 4 D係分別與第一實施形態之整流 電路部23A及供給控制部24A為相同的構成，所以省略其 詳細說明。 諧振電路部22D係具有：輸出由一次線圈L1之交變 磁場所感應之交變電力的二次線圈L2;串聯連接於該二次 線圈L2的電容器C6;以及由電容器以與開閉器swi所 構成的串聯電路，該串聯電路係並聯連接於由二次線圈U 與電谷器C6所構成的串聯電路。藉此，諧振電路部22D 係在開閉器SW1開放時，構成作為由二次線圈L2與電容 27 201131926 器C6所構成的二次側之諧振電路(LC電路）。又，在開閉 器SW1關閉時，構成作為包含由二次線圈L2與電容器C6 所構成的串聯電路、及並聯連接於該串聯電路之電容器C8 的二次側之諧振電路(LC電路）。藉此，諧振電路部22D係 可藉由電容器C8之有無來變更該諧振電路(LC電路)之電 路常數，且藉由該電路常數之變更而使二次線圈L2從一次 線圈L1接收的交變電力之振幅產生變化(調變）。亦即，藉 由諧振電路之電路常數的變更，可使接收從一次線圈L1 供給之電力的二次線圈L2之受電特性變更。又’產生於二 次線圈L2與電容器C6之串聯連接之端子間的電力（電壓) 係被供給至整流電路部23D。 另外，第四實施形態中’電容器C6之值，係於藉由 二次線圈L2與電容器C6形成二次侧之諧振電路(lc電路) 時，被設定為二次線圈L2與一次線圈L1之磁性輕合性變 得良好的值。另一方面，電容器C8之值，係於藉由二次線 圈L2、電容器C6及電容器C8形成二次側之諧振電路(Lc 電路）時，與先前之由二次線圈L2及電容器C6所構成的諧 振電路相較，被設定為二次線圈L2與一次線圈L1之磁性 耦合性較劣化的值。 二次侧控制裝置21係連接於諧振電路部22D之開閉 器swi，且開閉控制開閉器SW1以切換依開閉器SW1進 行的電容器C8之連接/非連接。亦即，藉由二次側控制裝 置21開閉控制開閉器sw 1 ’可變更諧振電路部22D之二 次侧的諧振電路(LC電路)之電路常數，藉此，二次線圈L2 之交變電力的電壓波形之最大電壓，可變化成不同的電壓 28 201131926 VL2或電壓VH2。隨之’ 一次線圈L1之交變電力的振幅， 可變化成例如電壓VL1或電壓VH1。 又，依二次側控制裝置21進行的開閉器SW1之開閉 控制，係與第一實施形態同樣地，以比一次線圈L1之振盪 週期還長的週期、例如10Hz(100ms)之通信用的週期來進 行，以不與二次侧之諧振電路(LC電路)之諧振發生干涉。 如此，藉由在每一通信用之週期中，使二次線圈L2 之交變電力的最大電壓，選擇性地變化成例如電壓VL2與 電壓VH2之其中之一，二次側控制裝置21係可根據基於 通信規則而產生的二值之通信用信號，來調變二次線圈L2 之交變電力。然後，電力發送部1〇係從經調變後的一次線 圈L1之最大電壓中，藉由一次側控制裝置11解調通信信 號，以取得依電力接收部2G所產生的通信信號之内容。 如以上說明依第四實施形態也可獲得與先前之第一 實施形態之前述⑴至(5)之效果同等或是準同等於此的效 果，並且可獲得如下列的效果。The snow wire circuit unit 22 can change the spectrum circuit (LC ' by connecting the two ring = electric (electric bar C6 or capacitor C8) and change the circuit constant to make the secondary coil L2 The vibration of the alternating electric power from the _ L1 pure is generated in the enthalpy circuit unit 2; the power receiving characteristic of the under coil is changed. The force (voltage) of the secondary coil u of the electric 峪谇i2B is supplied to In the second embodiment, the value of the capacitor C6 is such that the secondary side line illuminator lc is formed by the secondary coil L2 and the capacitor C6, and is represented by a secondary line 圏. When L2 and ― (=) are previously used by the secondary=road), the value of the spectral circuit that is set to the secondary coil L2 is set to deteriorate. 2, the magnetic axis of the read ring L1 is compared with the SW1, the stf'l device 21 is connected to the open circuit of the resonant circuit portion 22B, the connection of the capacitor C8 is connected/disconnected, 22 201131926, the f container according to the switch SW2 Connection/non-connection of C6. In other words, by controlling the respective switches SW1 and SW2 by the secondary side control device 21, the circuit constant of the secondary (four) impurity circuit (lc circuit) of the resonance circuit unit 22B can be changed, whereby the secondary coil B is turned over. The maximum voltage of the voltage waveform of the variable power can be changed to a different voltage VL2 or voltage VH2. Accordingly, the alternating electric power of the primary coil L1 can be changed to, for example, the voltage VL1 or the voltage VH1 ° in the amplitude. In the second embodiment, each of the switches SW1 and SW2 is controlled to open and close at least one of the switches SW1 and SW2. Turning off, whereby the control circuit constant varies within a predetermined range. In the same manner as in the first embodiment, the opening and closing control of the shutter SW1 is performed in a cycle longer than the oscillation period of the primary coil Li, for example, a communication cycle of 10 Hz (100 ms). To perform 'without interference with the resonance of the secondary side resonant circuit (LC circuit). Thus, by selectively changing the maximum voltage of the alternating power of the secondary coil L2 to, for example, the voltage VL2 and the voltage VH2 in each communication cycle, the secondary side control device 21 can The alternating power of the secondary coil L2 is modulated according to a binary communication signal generated based on a communication rule. Then, the power transmitting unit demodulates the communication signal from the maximum voltage of the modulated primary coil L1 by the primary side control device u, and acquires the content of the communication signal generated by the power receiving unit 2A. As described above, according to the second embodiment, the effects of the above (1) to (5) of the first embodiment can be obtained or equivalent, and the following effects can be obtained. (6) The switch SWb and SW2 are respectively provided in the capacitor C8 and the capacitor C6 connected in parallel to the load. Thereby, the circuit constant of the resonance circuit portion 22B, i.e., the power reception characteristics of the secondary coil l2, can be changed in accordance with the capacitor C8 or the capacitor 3 23 201131926 C6 '. (Third Embodiment) Next, a third embodiment in which the non-contact power supply device of the present invention is embodied will be described with reference to Fig. 6 . Fig. 6 is a schematic diagram showing the circuit configuration of the power receiving unit 2 of the non-contact power supply device of the third embodiment. The configuration of the resonant circuit portion 22C of the power receiving unit 2A of the third embodiment is different from that of the first first embodiment, but the other configurations are the same. Therefore, the third embodiment is mainly described with respect to the first embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals, and for convenience of explanation. The detailed description is omitted. As shown in FIG. 6, the power receiving unit 20 includes a resonance circuit unit 22C that receives alternating power from the power transmission unit 1A, and a rectifier circuit unit 23C that converts alternating power (AC power) into DC power; and controls DC power. The supply control unit 24C that supplies the load, and the battery BA that is a load that supplies power from the supply control unit 24C. In addition, since the rectifier circuit unit 23C and the supply control unit 24C of the third embodiment are respectively rectified with the first embodiment, the road portion 23A and the supply control unit 24A have the same configuration, and therefore, the detailed description thereof will be omitted. The resonant circuit portion 22C has a secondary coil L2 that outputs alternating power of the alternating magnetic flux of the primary coil L1, and a parallel-connected circuit is connected to the secondary coil L2. The parallel circuit includes a capacitor C6. A series circuit composed of the switch SW2 and a series circuit including a capacitor C8 and an open/close 24 201131926 SW1. In this way, when the shutter SW1 is opened and the shutter SW2 is closed, the resonant circuit unit Me is configured as a resonant circuit (LC circuit v' which is a secondary side composed of the secondary, the ring L2 and the capacitor C6. When the shutter SW1 is closed and the shutter SW2 is opened, a resonant circuit (LC circuit) which is a secondary side composed of the secondary coil L2 and the capacitor C8 is formed. Thereby, the resonant circuit portion 22 can be connected by In the capacitor of the second circle L2 (capacitor C6 or capacitor C8), the circuit constant of the circuit (LC circuit) is changed, and the (four) power is received from the secondary coil L1 by the change of the circuit constant. Amplitude production: (modulation, that is, the reception characteristic of the secondary coil L2 that receives the electric power supplied from the primary coil L1 by the change of the circuit constant of the resonance circuit. Further, it is generated on the secondary side of the resonance circuit portion 22c. Lc electric power: The electric power (voltage) between the sub-units is supplied to the rectifying circuit unit. In addition, in the third embodiment, the value of the capacitor C6 is tied to the primary coil L2 and the electric cross crying (^6) Reporter, u ',; fine time,, the secondary side of the spectrum circuit (LC circuit) 砰Han 疋 is a secondary coil L2 and a + 砼圃 唂 electric 唂) has a good value n plane, the magnetic coupling of the capacitor C8® U and the capacitor C8 form the secondary side of the ^ ' When the secondary line is previously used by the secondary coil L2 and the capacitor/vibration circuit (LC circuit), the value is degraded from the resonant circuit formed by the secondary coils L2 and -4. The magnetic coupling of the human coil L1 is higher. The secondary side control device 21 is connected to the device, and is opened and closed individually. The opening/closing of the oscillation circuit unit 22C is switched between the switch SW1 and the switch SW2 and the switch C1. Connection/non-connection, ° connection/non-connection. That is, 201131926 f is controlled by the secondary side control unit 21 to open and close the respective switches SW1 and SW2, and the resonance circuit of the secondary side of the resonance circuit unit 22C (LC) The circuit has two circuits, whereby the maximum voltage 'the voltage waveform of the alternating power of the secondary coil L2 can be changed to a different voltage VL2 or voltage VH2. Accordingly, the amplitude of the alternating power of the primary coil L1 can be Change to, for example, voltage VL1 or voltage VH1 °. In the third embodiment, each of the opening and closing controls is opened and closed. Swi and SW2 cause at least one of the shutters SW1 and SW2 to be turned off, whereby the control circuit constant changes within a predetermined range. Further, the opening and closing control of the shutter SW1 by the secondary side control device 21 is first Similarly, the embodiment is performed with a period longer than the oscillation period of the primary coil L1, for example, a period of communication of 100 Hz (100 ms), and does not interfere with the resonance of the secondary side resonant circuit (LC circuit). In this way, the maximum voltage of the parental power of the secondary coil L2 is selectively changed to, for example, one of the voltage VL2 and the voltage VH2 in the period of each communication, and the secondary side control device 21 The alternating power of the secondary coil L2 can be modulated according to a binary communication signal generated based on a communication rule. Then, the power transmitting unit 10 obtains the content of the communication signal generated by the power receiving unit 20 by demodulating the communication signal from the primary side control device 11 from the maximum voltage of the modulated primary coil L1. As described above, according to the third embodiment, the effects equivalent to or equivalent to those of the above (1) to (5) of the first embodiment can be obtained, and the following effects can be obtained. (7) The switches SW1 and SW2 are provided in the capacitor C8 and the capacitor C6 connected in series to the load, respectively. Thereby, the circuit constant of the resonance circuit portion 22C, that is, the electrical characteristics of the secondary coil L2 can be changed according to the capacitor C8 or the capacitor C6. (Fourth embodiment) Next, a fourth embodiment in which the non-contact power supply device of the present invention is integrated will be described with reference to Fig. 7 . The seventh aspect is a schematic diagram showing the circuit configuration of the power receiving unit 20 of the contact type power supply device according to the fourth embodiment. Further, the configuration of the spectral circuit unit 22D of the power receiving unit according to the fourth embodiment is different from that of the first embodiment, but the configuration of j is the same. Therefore, in the fourth embodiment, the differences from the first embodiment will be mainly described, and the same components as those in the first embodiment will be denoted by the same reference numerals, and the detailed description will be omitted for convenience of explanation. As shown in FIG. 7, the power receiving unit 20 includes a resonant circuit unit 22D that receives alternating power from the power transmitting unit 10, and a rectifier circuit unit 23D that converts alternating power (AC power) into DC power; and controls DC power supply. The supply control unit 24D to the load and the battery BA as a load for supplying electric power from the supply control unit 24D. In addition, since the rectifier circuit unit 2 3 D and the supply control unit 24 D of the fourth embodiment have the same configuration as the rectifier circuit unit 23A and the supply control unit 24A of the first embodiment, detailed description thereof will be omitted. The resonant circuit unit 22D has a secondary coil L2 that outputs alternating power induced by the alternating magnetic field of the primary coil L1, a capacitor C6 that is connected in series to the secondary coil L2, and a capacitor that is formed with the switch swi The series circuit is connected in parallel to a series circuit composed of a secondary coil U and a battery C6. Thereby, the resonant circuit unit 22D constitutes a resonant circuit (LC circuit) which is a secondary side constituted by the secondary coil L2 and the capacitor 27 201131926 C6 when the shutter SW1 is opened. When the switch SW1 is turned off, it is configured as a resonant circuit (LC circuit) including a series circuit including the secondary coil L2 and the capacitor C6 and a secondary side of the capacitor C8 connected in parallel to the series circuit. Thereby, the resonant circuit portion 22D can change the circuit constant of the resonant circuit (LC circuit) by the presence or absence of the capacitor C8, and the alternating current received by the secondary coil L2 from the primary coil L1 by the change of the circuit constant The amplitude of the power changes (modulates). In other words, by changing the circuit constant of the resonant circuit, the power receiving characteristics of the secondary coil L2 that receives the power supplied from the primary coil L1 can be changed. Further, electric power (voltage) generated between the terminals of the secondary coil L2 and the capacitor C6 connected in series is supplied to the rectifier circuit portion 23D. In the fourth embodiment, the value of the capacitor C6 is set to the magnetic resonance of the secondary coil L2 and the primary coil L1 when the secondary coil L2 and the capacitor C6 form a secondary side resonant circuit (lc circuit). The lightness becomes a good value. On the other hand, the value of the capacitor C8 is formed by the secondary coil L2, the capacitor C6, and the capacitor C8 when the secondary side resonant circuit (Lc circuit) is formed, and the former is composed of the secondary coil L2 and the capacitor C6. The resonant circuit is set to a value in which the magnetic coupling property between the secondary coil L2 and the primary coil L1 is deteriorated. The secondary side control device 21 is connected to the switch swi of the resonance circuit unit 22D, and opens and closes the control switch SW1 to switch the connection/disconnection of the capacitor C8 by the switch SW1. In other words, the secondary side control device 21 opens and closes the control switch sw 1 ' to change the circuit constant of the resonant circuit (LC circuit) on the secondary side of the resonant circuit portion 22D, whereby the alternating power of the secondary coil L2 The maximum voltage of the voltage waveform can be varied to a different voltage 28 201131926 VL2 or voltage VH2. Accordingly, the amplitude of the alternating power of the primary coil L1 can be changed to, for example, the voltage VL1 or the voltage VH1. In the same manner as in the first embodiment, the opening and closing control of the shutter SW1 is performed in a cycle longer than the oscillation period of the primary coil L1, for example, a communication cycle of 10 Hz (100 ms). This is done so as not to interfere with the resonance of the secondary side resonant circuit (LC circuit). Thus, by selectively changing the maximum voltage of the alternating power of the secondary coil L2 to one of, for example, the voltage VL2 and the voltage VH2 in each communication cycle, the secondary side control device 21 can The alternating power of the secondary coil L2 is modulated according to a binary communication signal generated based on a communication rule. Then, the power transmitting unit 1 demodulates the communication signal from the maximum voltage of the modulated primary coil L1 by the primary side control device 11 to acquire the content of the communication signal generated by the power receiving unit 2G. As described above, according to the fourth embodiment, the effects equivalent to or equivalent to those of the above (1) to (5) of the first embodiment can be obtained, and the following effects can be obtained.
產生變動。藉此，可錯由較少的開閉器， 次線圈L2接收的父變電力之振巾|的變更 (第五實施形態）其次，按照圖8說明將本發 體化的第五實施形態。圖8 式供電裝置的電力接收部2〇之電路構成 赞明之非接觸式供電裝置具 Ί十對第五實施形態扑接觸 f施形態之非接觸 而顯示的示意圖。 29 201131926 另外，第五實施形態之電力接收部20之諧振電路 22E的構成係與先前之第一實施形態不同，但是除此以外 的構成則為相同。因此，苐五實施形態中主要是針對與第 一實施形態之不同點加以說明，而關於與第一實施形熊相 同的構成則附§己相同的元件符號，且為了方便說明起見 省略詳細說明。 ’ 如圖8所示，電力接收部20係具備：從電力發 ίο接收交變電力的諧振電路部22E;將交變電力（交流° 轉換成直流電力的整流電路部23E;控制直流電力供汰) 負載的供給控制部24E ;以及從供給控制部24£供给^ 之作為負載的電池BA。另外，由於第五實施形態之整 路部23E及供給控制部2犯係分別與第—實施形態之整= 電路部23A及供給控制部24A為相同㈣成，所^ 詳細說明。 再 諧振電路部22E係具有：輪出由一次線圈u之交 磁％所感應之交變電力的一次線圈L2;串聯連接於該_ ^ 線圈L2，由作為電感器之線圈L4與開關器SW3所構成 並聯電路；以及並聯連接於由該並聯電路與二次線圈L2 所構成的串聯電路之電容器C6。藉此，諧振電路部22它係 在開閉器SW3開放時，構成作為由二次線圈L2與線圈u 之串聯電路，及並聯連接於該串聯電路之電容器€6所構成 的二次側之諧振電路(LC電路）。又，在開閉器SW3關閉 時，構成作為由二次線圏L2與電容器C62並聯電路所構 成的二次侧之諧振電路(LC電路）。藉此，諧振電路部 係可藉由線圈L4之有無來變更該諧振電路(LC電路)之電 201131926 ^常數藉由該電路常數之變更而使二次線圈L2從…欠 線=L1接收的交變電力之振幅產生變化(調變）。亦即 由諧振電路之電路常數的變更，可使接收從一^ :=:;_叫電=又= = :3，C6之端子間的電力關係被供給至 一 中’電容器C6之值，係於藉由 一次線圈L2與電容器稽田 時，被設定為二次:2=_：；^之路(LC電路） 得良好的值。另一方面，線圈L4之值，：輕：性變 L2與線圈L4之串聯雷政 藉由一次線圈 容器《形成二次側之错振電及路並(J；連電接的電 二次線圈L2及電容器C6 ，與先别之由 為-次線圈L2^ ^ 電路相較，被設定Make changes. As a result, it is possible to change the sneakers of the parental power received by the secondary coil L2 by a small number of switches (the fifth embodiment). Next, a fifth embodiment of the present invention will be described with reference to Fig. 8 . Fig. 8 shows the circuit configuration of the power receiving unit 2 of the power supply device. The non-contact power supply device of the ninth embodiment is a schematic diagram showing the non-contact display of the fifth embodiment. 29 201131926 The configuration of the resonance circuit 22E of the power receiving unit 20 of the fifth embodiment is different from that of the first embodiment, but the other configurations are the same. Therefore, the fifth embodiment is mainly described with respect to the differences from the first embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals, and the detailed description is omitted for convenience of explanation. . As shown in Fig. 8, the power receiving unit 20 includes a resonant circuit unit 22E that receives alternating power from the power generating unit, and a rectifying circuit unit 23E that converts alternating current (AC to DC power); The load supply control unit 24E and the battery BA as a load are supplied from the supply control unit 24. In addition, the entire road portion 23E and the supply control unit 2 of the fifth embodiment are identical to the whole circuit portion 23A and the supply control unit 24A of the first embodiment, and will be described in detail. The re-resonant circuit unit 22E has a primary coil L2 that rotates the alternating electric power induced by the magnetic flux % of the primary coil u, is connected in series to the _ ^ coil L2, and is connected by the coil L4 and the switch SW3 as inductors. A parallel circuit is formed; and a capacitor C6 connected in parallel to the series circuit composed of the parallel circuit and the secondary coil L2. Thereby, the resonant circuit unit 22 constitutes a resonant circuit of a secondary side constituted by a series circuit of the secondary coil L2 and the coil u and a capacitor connected to the series circuit of the series circuit 6 when the shutter SW3 is opened. (LC circuit). Further, when the shutter SW3 is closed, a resonant circuit (LC circuit) which is a secondary side formed by a circuit in which the secondary winding L2 and the capacitor C62 are connected in parallel is formed. Thereby, the resonant circuit portion can change the electric power of the resonant circuit (LC circuit) by the presence or absence of the coil L4. The constant is received by the secondary coil L2 from the underline = L1 by the change of the circuit constant. The amplitude of the varying power produces a change (modulation). That is to say, by changing the circuit constant of the resonant circuit, the power relationship between the terminals of the C6 can be supplied from a ^:=:;_ 叫 ====3, and the power relationship between the terminals of the C6 is supplied to the value of the capacitor C6. When the primary coil L2 and the capacitor are in the field, it is set to a secondary value: 2 = _:; ^ (LC circuit) has a good value. On the other hand, the value of the coil L4, light: the series connection of the change L2 and the coil L4 by the primary coil container "forms the secondary side of the galvanic power and the road (J; connected electric secondary coil L2 and capacitor C6 are set compared with the first-order L2^^ circuit.
It則線圈L1之磁性輕合性較劣化的值。It is a value in which the magnetic compatibility of the coil L1 is deteriorated.
工裝置21係連接於諧振電路部22E之門M ™ " SW3 ^ sw：： 灯的線圈之連接/非連接。亦即，藉由二次侧控制裝置 21開閉控制開閉器SW3 ’可變更諧振電路部22£之-一 的諧振電路(LC電路)之電路常數，藉此，二次線二 交變電力的電壓波形之最大電壓，可變化成不同的電壓 VL2或電壓谓。隨之，-次線圈L1之交變電力的振幅， 可變化成例如電壓VL1或電壓VH1。 又，依二次側控制裝置21進行的開閉器SW3之開閉 控制，係與第一實施形態同樣地，以比一次線圈L1之振盈 週期還長的週期、例如lOHz(lOOms)之通信用的週期來進 31 201131926 灯=與二次側之譜振電路(LC電路)之譜振發生干+。 之交變電力的每;'通信用之週期中，使二次線圈^ 電壓vH2之其中之1’選擇性地變化如電M VL2與 通信規則而產生的-值一人侧控制裝置21係可根據基於 之交變電力。„信用信號，來調變二次線圈L2 然後，電力發送部10係從經調變播 圈L1之最大電壓中 宁攸、！㈣後的一次線 號，以取得依電力接—次難制裝置11解調通信信 如以上說明仿笛2〇所產生的通信信號之内容。 眚你#能夕1、月，第五實施形態也可獲得與先前之第一 ^ 刖述（1)至（4)之效果同等或是準同等於此的效 果，並且可獲得如下列的效果。 (9)藉由依串聯連接於二次線圈L2之開閉器SW3進行 的線圈L4之連接/非連接，使得基於二次線圈L2與電容器 C6的諧振電路部22E之電路常數，亦即，以二次線圈乙2 接收的交變電力之振幅產生變動。藉此，可藉由較少的開 閉器SW3輕易地進行以二次線圈L2接收的交變電力之振 幅變更。 (10)由於可藉由電容器C6與線圈L4之組合來設定以 二次線圈L2接收的交變電力之振幅，可提高用以使該交變 電力之振幅變更的設定自由度。 (第六實施形態） 其次’按照圖9說明將本發明之非接觸式供電裝置具 體化的第六實施形態。圖9係針對第六實施形態之非接觸 式供電裝置的電力接收部20之電路構成而顯示的示意圖。 另外，第六實施形態之電力接收部20之諧振電路部 32 201131926 22F的構成係與先前之第—實施形態不同，但是除此以外 :構成則為相同。因此，第六實施形態中主要是針對與第 一實施形態之不同點加以說明’而關於 施形 同、的構成則附記相同的元件符號，且為了方便說明起；；， 省略詳細說明。 如圖9所示，電力接收部2〇係具傷：從電力發送部 10接收交變電力的諧振電路部22F;將交變電力（交流電力） 轉換成直流電力的整流電路部挪；控制直流電力供給至 負載的供給控制部24F;以及從供給控制部24F供給電力 之作為負載的電池BA。另外，由於第六實施形態之整流電 路部23F及供給控制部24F齡別與第—實施形態之整流 電路部23A及供給控制部24A為相同的構成，所以省略盆 、譜振電路部22F係具有··輸出由—次線圈u之交變 磁場所感應之交變電力的二次線圈L2;串聯連 * 線圈L2之由作為電阻元件之電阻R8與開關器= 的並聯電路；以及並聯連接於該並聯電路與二次線圈 之串聯電路的電容器C6。藉此，諧振電路部22 器綱開放時，構成作為由二次線圈。與電阻則之3 電路’及並聯連接於該串聯電路之電容器C6 二 =電?(Γ電路)。又，在開閉器，二: 成作為由二二人線圈L2與電容器06之並聯電 次側之職電路(LC電路）。藉此，諧振電路部22F == 由電阻R8之有無來變更該譜振電路(RLC電路或雷可糟 之電路常數，且藉由該電路常數之變更而使二次線圈^ 33 201131926 從一次線圈Ll接收的交變電力之振幅產生變化(調變）。亦 即，藉由諧振電路之電路常數的變更，可使接收從一次線 圈L1供給之電力的二次線圈L2之受電特性變更。又，產 生於諧振電路22F之電容器C6之端子間的電力（電壓）係被 供給至整流電硌部23F。 另外，第六實施形態中，電容器C6之值係於藉由二 次線圈L2與電容器C6形成二次側之諧振電路(l(：電路) =，被設定為二次線圈L2與一次線圈u之磁性耦合性變 得良好的值。另—方面，電阻R8之值係於藉由二次線圈 電阻R8之串聯電路、及並聯連接於該串聯電路的電 谷器C6形成二次侧之諧振電路(RLC電路）時，與先前之由 二=圈U及電容器C6所構成的譜振電路相較，被設定 為-人線圈L2與—次線圈[I之磁性輕合性較劣化的值。 。一人側控制裝置21，係連接於諧振電路部22F之開閉 ，SW4 ’且開閉控制開閉器SW4以切換依開閉器進 行的電阻R8之連接/非連接。亦即，藉由二次侧控制裝置 21開閉控制開閉器SW4，可變更諧振電路部挪之二次侧 的諧振電路之電路常數，藉此，二次線圈之交變電力的 f壓波形之最大電壓’可變化成不同的電壓或電壓The device 21 is connected to the connection/non-connection of the coils of the gates M TM " SW3 ^ sw:: lamps of the resonance circuit portion 22E. In other words, the secondary side control device 21 opens and closes the control switch SW3' to change the circuit constant of the resonant circuit (LC circuit) of the resonant circuit portion 22, whereby the voltage of the secondary line and the second alternating power The maximum voltage of the waveform can be changed to a different voltage VL2 or voltage. Accordingly, the amplitude of the alternating power of the secondary coil L1 can be changed to, for example, the voltage VL1 or the voltage VH1. In addition, in the same manner as in the first embodiment, the opening/closing control of the shutter SW3 by the secondary side control device 21 is used for communication longer than the oscillation period of the primary coil L1, for example, 10 Hz (100 ms). The cycle comes into 31 201131926 lamp = dry + with the spectrum of the secondary side spectrum circuit (LC circuit). Each of the alternating electric powers; in the period of communication, the one-side of the secondary coil voltage vH2 is selectively changed as the electric M VL2 and the communication rule are generated - the value of the human-side control device 21 can be Based on alternating power. „Credit signal to modulate the secondary coil L2. Then, the power transmitting unit 10 takes the line number from the maximum voltage of the modulated broadcast ring L1, and then obtains the line number after the power supply. 11 demodulation communication letter as described above to explain the content of the communication signal generated by the whistle 2 。 眚 # # 1、 1、 1、, the fifth embodiment can also be obtained with the previous first description (1) to (4 The effect is equal or quasi-equal, and the following effects can be obtained. (9) The connection/non-connection of the coil L4 by the shutter SW3 connected in series to the secondary coil L2 makes it based on two The circuit constant of the secondary coil L2 and the resonant circuit portion 22E of the capacitor C6, i.e., the amplitude of the alternating power received by the secondary coil B2, is varied, thereby being easily performed by a small number of shutters SW3. The amplitude of the alternating power received by the secondary coil L2 is changed. (10) Since the amplitude of the alternating power received by the secondary coil L2 can be set by the combination of the capacitor C6 and the coil L4, the alternating can be improved. The degree of freedom in setting the amplitude of the power. Next, a sixth embodiment in which the non-contact power supply device of the present invention is embodied will be described with reference to Fig. 9. Fig. 9 shows a circuit configuration of the power receiving unit 20 of the non-contact power supply device according to the sixth embodiment. The configuration of the resonant circuit unit 32 201131926 22F of the power receiving unit 20 of the sixth embodiment is different from that of the previous embodiment, but the configuration is the same. Therefore, in the sixth embodiment, The same reference numerals are given to the same components as those of the first embodiment, and the same reference numerals will be given to the same components, and the description will be omitted for convenience of explanation. The power receiving unit is shown in FIG. 2 具 具 injury: a resonance circuit unit 22F that receives alternating power from the power transmission unit 10; a rectifier circuit unit that converts alternating power (AC power) into DC power; and a supply control unit that controls DC power supply to the load And a battery BA as a load that supplies electric power from the supply control unit 24F. Further, the rectifier circuit unit 23F and the supply control of the sixth embodiment Since the 24F stage is the same as the rectifier circuit unit 23A and the supply control unit 24A of the first embodiment, the basin and the spectral circuit unit 22F are omitted and the output is induced by the alternating magnetic field of the secondary coil u. a secondary coil L2 of alternating power; a series connection* of a coil L2 as a parallel circuit of a resistor R8 and a switch = of the resistor element; and a capacitor C6 connected in parallel to the series circuit of the parallel circuit and the secondary coil. When the resonant circuit unit 22 is open, it is configured as a secondary coil. A circuit 3 with a resistor and a capacitor C6 connected in parallel to the series circuit are two electric circuits (Γ circuit). Further, in the switch, two : The circuit (LC circuit) is used as a parallel secondary side of the two-two coil L2 and capacitor 06. Thereby, the resonance circuit unit 22F == changes the spectral circuit by the presence or absence of the resistor R8 (the circuit constant of the RLC circuit or the stunner, and the secondary coil ^ 33 201131926 is changed from the primary coil by the change of the circuit constant The amplitude of the alternating power received by L1 is changed (modulated), that is, the power receiving characteristic of the secondary coil L2 that receives the power supplied from the primary coil L1 can be changed by changing the circuit constant of the resonant circuit. The electric power (voltage) generated between the terminals of the capacitor C6 of the resonant circuit 22F is supplied to the rectifying power unit 23F. In the sixth embodiment, the value of the capacitor C6 is formed by the secondary coil L2 and the capacitor C6. The secondary side resonant circuit (l(:circuit) = is set to a value in which the magnetic coupling between the secondary coil L2 and the primary coil u becomes good. On the other hand, the value of the resistor R8 is based on the secondary coil When the series circuit of the resistor R8 and the electric valley device C6 connected in parallel to the series circuit form a resonant circuit (RLC circuit) on the secondary side, compared with the previous spectrum circuit composed of the second ring U and the capacitor C6 , is set to - human line The circle L2 and the secondary coil [I have a deteriorated magnetic compatibility. The one-side control device 21 is connected to the opening and closing of the resonant circuit portion 22F, and the switch 4b is opened and closed to open and close the switch SW4. In the connection/disconnection of the resistor R8, that is, the secondary side control device 21 opens and closes the control switch SW4, and the circuit constant of the resonant circuit on the secondary side of the resonant circuit portion can be changed, thereby the intersection of the secondary coil The maximum voltage of the f-voltage waveform of the variable power can be changed to a different voltage or voltage.
VH2。隨之’一* :会娃固T 人綠圈L1之交變電力的振幅，可變化成例 如電M VL1或電壓vjji。 又，依一次側控制裝置21進行的開閉器SW4之開閉 控制、·係與第-實施形態同樣地，以比—次線圈U之振盪 4長的週期、例如^ (繼服)之通信用的週期來進 订’以不與一次側之諸振電路(rlc電路或lc冑路)之諸振 34 201131926 發生干涉。 如此，藉由在每一通信用之週期中，使二次線圈L2 之交變電力的最大電壓，選擇性地變化成例如電壓VL2與 電壓VH2之其中之一，二次側控制裝置21係可根據基於 通信規則而產生的二值之通信用信號，來調變二次線圈之 交變電力。然後，電力發送部10係從經調變後的一次線圈 L1之最大電壓中，藉由一次侧控制裝置11解調通信信號， 以取得依電力接收部20所產生的通信信號之内容。 如以上說明，依第六實施形態也可獲得與先前之第一 實施形態之前述（1)至（4)之效果同等或是準同等於此的效 果，並且可獲得如下列的效果。 (11) 藉由依串聯連接於二次線圈L2之開閉器SW4進 行的電阻R8之連接/非連接，使得基於二次線圈L2與電容 器C6的諳振電路部22F之電路常數，亦即，以二次線圈 L2接收的交變電力之振幅產生變動。藉此，可藉由較少的 開閉器SW4輕易地進行以二次線圈L2接收的交變電力之 振幅變更。 (12) 由於可藉由電容器C6與電阻R8之組合來設定以 二次線圈L2接收的交變電力之振幅，可提高用以使該交變 電力之振幅變更的設定自由度。 另外，上述各實施形態，例如亦可變更如下。 •上述各實施形態中係例示了電力發送部10根據一 次線圈L1之交變電力的最大電壓解調來自電力接收部20 之通信信號的情況。但是並不限於此，電力發送部10亦可 以其他的方法，檢測出按照以二次線圈L2受電電力的振幅 35 201131926 如，觉H生，於一次線圈L1之交變電力之振幅的變化。例 + ^送。卩10亦可根據在一次線圈L1之交變電力的 電二之調轡其振幅變化。此方法中，不論如何的交變 缺。S° 均可解調來自電力接收部20之通信信 》 此，可提面電力發送部1〇之構成的自由度。 變化 -ρΛ各實施形態中係例示了藉由電容器C6及電容 ^等變更譜振電路部22A〜22F之電路常數的情況。但 不限於此，只要可變更諧振電路部之電路常數，可在 乾振電路σ卩中使用任意的被動元件。例如，亦可將圖8之 線圈L4或圖9之電阻R8變更成電容器。或是，亦可將譜 振電路部之二個電容器中的-方變更成電阻it件或線圈 (電感器）°或是’亦可將譜振電路部之二個電容器的-方 變，成電阻元件、而將另—方變更成線圈等的電感器。或 者疋’亦可將譜振電路部之二個電容器兩者均變更成電阻 元件或線圈（電感器）。 例如，二個被動元件為線圈的情況時，由於被動元件 只由電感所構成，可簡單地形成諳振電路部之電路構成。 又，即使二個被動元件為電阻元件的情況時，由於被動元 件只由電阻元件所構成，可簡單地形成諳振電路部之電路 構成。 •上述各實施形態中係例示了諧振電路部22A〜22F 藉由一次線圈L2與其他的一個或二個被動元件（電容器 C6、電容器C8、線圈L4、電阻R8等）變更其電路常數的 情況。但是並不限於此，除了二次線圈L2以外，亦可藉由 與三個以上的被動元件之間的互動來變更諧振電路部的電 36 201131926 路常數。 •上述各實施形態中係例示了直流電力充電至電池 BA的情況。但是並不限於此，直流電力亦可直接被消耗。 藉此’可提高此種非接觸式供電裝置之適用可能性。 •上述各實施形態中係例示了電力接收部2〇用於可 攜式機器等的情況。但是並不限於此，電力接收部2〇亦可 用於期望以非接觸方式進行電力供給之例如電動汽車等的 移動體。藉此’可提高此種非接觸式供電裝置之適用的自 由度。 【圖式簡單說明】 圖1係針對將本發明之非接觸式供電裝置具體化的第 一實施形態概略顯示其電路構成的電路圖。 圖2係顯示該第一實施形態之電力接收部的交變電力 之電壓變化的曲線圖；其中（a)顯示受電特性最適當的情 況；（b)顯示受電特性非為最適當的情況。 一圖3係將與圖2同樣的狀態以比該圖2還長的期間顯 :的曲線圖；其中⑷顯示受電特性最適當的情況；⑻顯示 又電特性非為最適當的情況。 、圖4係顯示依據該第一實施形態之電力供電部的信號 曲接收狀態之曲線圖；其中（a)顯示交變電力之電壓變化的 線圖’（b)顯示根據之電壓變化而解調的信號之示意 圖0 一5係針對將本發明之非接觸式供電裝置具體化的第 轭形態概略顯示其電力接收部之電路構成的電路圖。 37 201131926 圖6係針對將本發明之非接觸式供電裝置具體化的第 三實施形態概略顯示其電力接收部之電路構成的電路圖。 圖7係針對將本發明之非接觸式供電裝置具體化的第 四實施形態概略顯示其電力接收部之電路構成的電路圖。 圖8係針對將本發明之非接觸式供電裝置具體化的第 五實施形態概略顯示其電力接收部之電路構成的電路圖。 圖9係針對將本發明之非接觸式供電裝置具體化的第六實 施形態概略顯示其電力接收部之電路構成的電路圖。 【主要元件符號說明】 10 電力發送部 11 一次側控制裝置(解調控制裝置） 20 電力接收部 21 二次側控制裝置（調變控制裝置） 22 A〜22F 諧振電路部 23A〜23F 整流電路部 24 A〜24F 供給控制部 BA 電池 C1 〜C3、C5、C6、C8 電容器 C4 諧振用電容器 - C7 平滑用電容器 D1 > D2 二極體 D3 整流用二極體 E 直流電源 38 201131926 FETl N通道MOS電晶體 FET3 P通道MOS電晶體 LI 一次線圈 L2 二次線圈 L3 反饋線圈 N1〜N3 連接點 R1 啟動電阻 R2〜R7 電阻 SW1-SW4 開關器 TR2、TR3 偏壓控制用電晶體 39VH2. Then, the amplitude of the alternating power of the green circle L1 can be changed into an example such as electric M VL1 or voltage vjji. In addition, the opening and closing control of the shutter SW4 by the primary side control device 21 is similar to the first embodiment, and is used for communication longer than the oscillation 4 of the secondary coil U, for example, for communication. The cycle is to 'order' to interfere with the vibrations of the primary side of the vibration circuit (rlc circuit or lc circuit) 34 201131926. Thus, by selectively changing the maximum voltage of the alternating power of the secondary coil L2 to one of, for example, the voltage VL2 and the voltage VH2 in each communication cycle, the secondary side control device 21 can The alternating power of the secondary coil is modulated according to a binary communication signal generated based on a communication rule. Then, the power transmission unit 10 demodulates the communication signal from the maximum voltage of the modulated primary coil L1 by the primary side control device 11 to acquire the content of the communication signal generated by the power receiving unit 20. As described above, according to the sixth embodiment, the effects equivalent to or equivalent to those of the above (1) to (4) of the first embodiment can be obtained, and the following effects can be obtained. (11) The circuit constant of the oscillating circuit portion 22F based on the secondary coil L2 and the capacitor C6, that is, two by the connection/disconnection of the resistor R8 by the shutter SW4 connected in series to the secondary coil L2 The amplitude of the alternating power received by the secondary coil L2 varies. Thereby, the amplitude change of the alternating electric power received by the secondary coil L2 can be easily performed by the small shutter SW4. (12) Since the amplitude of the alternating power received by the secondary coil L2 can be set by the combination of the capacitor C6 and the resistor R8, the degree of freedom in setting the amplitude of the alternating power can be increased. Further, each of the above embodiments may be changed as follows, for example. In the above-described embodiments, the power transmission unit 10 demodulates the communication signal from the power receiving unit 20 based on the maximum voltage of the alternating power of the primary coil L1. However, the power transmission unit 10 may detect the change in the amplitude of the alternating power of the primary coil L1 according to the amplitude of the power received by the secondary coil L2, 35 201131926, by another method. Example + ^ send. The 卩10 can also be adjusted in accordance with the amplitude of the alternating electric power of the primary coil L1. In this method, no matter what the alternation is. S° can demodulate the communication signal from the power receiving unit 20, and the degree of freedom of the configuration of the power transmitting unit 1 can be increased. In the respective embodiments, the circuit constants of the spectral circuit portions 22A to 22F are changed by the capacitor C6 and the capacitance ^ and the like. However, the present invention is not limited thereto, and any passive component can be used in the dry oscillation circuit σ卩 as long as the circuit constant of the resonance circuit portion can be changed. For example, the coil L4 of Fig. 8 or the resistor R8 of Fig. 9 may be changed to a capacitor. Alternatively, the square of the two capacitors of the spectral circuit portion may be changed to a resistor or a coil (inductor) or 'the square of the two capacitors of the spectral circuit portion may be changed. The resistor element is changed to an inductor such as a coil. Alternatively, both of the two capacitors of the spectral circuit portion may be changed to a resistive element or a coil (inductor). For example, when the two passive components are coils, since the passive components are composed only of inductors, the circuit configuration of the oscillating circuit portion can be easily formed. Further, even when the two passive elements are resistance elements, since the passive element is composed only of the resistance elements, the circuit configuration of the oscillating circuit portion can be easily formed. In the above embodiments, the resonant circuit units 22A to 22F change their circuit constants by the primary coil L2 and one or two other passive components (capacitor C6, capacitor C8, coil L4, resistor R8, etc.). However, the present invention is not limited thereto, and the electric circuit 36 201131926 constant may be changed by interaction with three or more passive elements in addition to the secondary coil L2. In the above embodiments, the case where DC power is charged to the battery BA is exemplified. However, it is not limited to this, and DC power can be directly consumed. This can increase the applicability of such a contactless power supply device. In the above embodiments, the case where the power receiving unit 2 is used for a portable device or the like is exemplified. However, the present invention is not limited thereto, and the power receiving unit 2〇 can also be used for a moving body such as an electric car that is desired to supply power in a non-contact manner. Thereby, the degree of freedom of application of such a contactless power supply device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a circuit diagram schematically showing a circuit configuration of a first embodiment in which a non-contact power supply device according to the present invention is embodied. Fig. 2 is a graph showing changes in voltage of alternating power of the power receiving portion of the first embodiment; (a) showing that the power receiving characteristics are most appropriate; and (b) displaying that the power receiving characteristics are not optimal. Fig. 3 is a graph showing a state in which the same state as Fig. 2 is longer than that of Fig. 2; wherein (4) shows that the power receiving characteristics are most appropriate; and (8) shows that the electrical characteristics are not the most appropriate. 4 is a graph showing a signal reception state of the power supply unit according to the first embodiment; wherein (a) a line graph showing the voltage change of the alternating power '(b) shows demodulation according to the voltage change. A schematic diagram of a signal constituting a non-contact power supply device according to the present invention is a circuit diagram showing a circuit configuration of a power receiving unit. 37 201131926 FIG. 6 is a circuit diagram schematically showing a circuit configuration of a power receiving unit in a third embodiment in which the non-contact power supply device of the present invention is embodied. Fig. 7 is a circuit diagram schematically showing a circuit configuration of a power receiving unit in a fourth embodiment in which the non-contact power supply device of the present invention is embodied. Fig. 8 is a circuit diagram schematically showing a circuit configuration of a power receiving unit in a fifth embodiment in which the non-contact power supply device of the present invention is embodied. Fig. 9 is a circuit diagram schematically showing a circuit configuration of a power receiving unit in a sixth embodiment in which the non-contact power supply device of the present invention is embodied. [Description of main component symbols] 10 Power transmission unit 11 Primary side control device (demodulation control device) 20 Power receiving unit 21 Secondary side control device (modulation control device) 22 A to 22F Resonant circuit unit 23A to 23F Rectifier circuit unit 24 A to 24F Supply control unit BA Battery C1 to C3, C5, C6, C8 Capacitor C4 Resonant capacitor - C7 smoothing capacitor D1 > D2 Diode D3 Rectifier diode E DC power supply 38 201131926 FETl N-channel MOS Transistor FET3 P-channel MOS transistor LI primary coil L2 secondary coil L3 feedback coil N1~N3 connection point R1 start-up resistor R2~R7 resistor SW1-SW4 switch TR2, TR3 bias control transistor 39