本發明屬于無線電能傳輸領域，尤其涉及一種(zhong)無線電能傳輸系統中負載(zai)切換(huan)控制方法。

背景技術：

近年來，無(wu)(wu)線充電技術發展迅速(su)，因其(qi)非接觸(chu)、無(wu)(wu)電線連接、操作方便(bian)等特(te)性，備(bei)受關注(zhu)，各種各樣(yang)的無(wu)(wu)線充電產(chan)品(pin)也(ye)相繼問(wen)世。隨著其(qi)無(wu)(wu)線充電技術的成熟與應用(yong)領域(yu)越(yue)來越(yue)廣泛，功率的提(ti)升(sheng)和(he)更(geng)好(hao)的用(yong)戶(hu)體驗越(yue)來越(yue)重要。

現有(you)的無(wu)(wu)(wu)(wu)線充電(dian)系(xi)統(tong)，從整體上看，包括兩部分(fen)：無(wu)(wu)(wu)(wu)線電(dian)能(neng)發(fa)射端(duan)和(he)無(wu)(wu)(wu)(wu)線電(dian)能(neng)接(jie)收端(duan)，而無(wu)(wu)(wu)(wu)線電(dian)能(neng)發(fa)射端(duan)和(he)無(wu)(wu)(wu)(wu)線電(dian)能(neng)接(jie)收端(duan)通過磁場來傳(chuan)(chuan)(chuan)遞(di)能(neng)量(liang)，兩者之間不用電(dian)線連(lian)接(jie)，無(wu)(wu)(wu)(wu)線電(dian)能(neng)發(fa)射端(duan)要(yao)獲(huo)取無(wu)(wu)(wu)(wu)線電(dian)能(neng)接(jie)收端(duan)狀態信(xin)息并進(jin)行能(neng)量(liang)傳(chuan)(chuan)(chuan)輸的調節，就必須從接(jie)收端(duan)傳(chuan)(chuan)(chuan)送(song)控(kong)制(zhi)訊(xun)號到發(fa)射端(duan)再(zai)經解析后進(jin)行控(kong)制(zhi)形(xing)成一個控(kong)制(zhi)回路，信(xin)號的傳(chuan)(chuan)(chuan)送(song)則(ze)由無(wu)(wu)(wu)(wu)線通信(xin)系(xi)統(tong)來完成。

而(er)(er)在無(wu)線(xian)(xian)充(chong)電(dian)(dian)(dian)技術控(kong)制(zhi)領域中，從輕載(zai)(zai)(zai)(zai)到重(zhong)(zhong)載(zai)(zai)(zai)(zai)的(de)(de)(de)(de)(de)切(qie)(qie)換(huan)存在著功率變化越(yue)大越(yue)無(wu)法切(qie)(qie)換(huan)成功的(de)(de)(de)(de)(de)問題，究其(qi)原因在于：無(wu)線(xian)(xian)電(dian)(dian)(dian)能(neng)(neng)(neng)傳輸(shu)(shu)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)需要工作(zuo)在諧(xie)(xie)振(zhen)狀(zhuang)態，才能(neng)(neng)(neng)獲(huo)得(de)最(zui)高的(de)(de)(de)(de)(de)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)效(xiao)率，而(er)(er)接(jie)收(shou)(shou)端(duan)的(de)(de)(de)(de)(de)負(fu)(fu)載(zai)(zai)(zai)(zai)以反射阻(zu)抗的(de)(de)(de)(de)(de)形式也參與整個系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)諧(xie)(xie)振(zhen)。當負(fu)(fu)載(zai)(zai)(zai)(zai)發生(sheng)(sheng)變化時(shi)(shi)，相(xiang)當于破壞了系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)諧(xie)(xie)振(zhen)狀(zhuang)態，系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)處(chu)于暫時(shi)(shi)的(de)(de)(de)(de)(de)失諧(xie)(xie)狀(zhuang)態，接(jie)收(shou)(shou)端(duan)不(bu)(bu)能(neng)(neng)(neng)從磁場(chang)(chang)中獲(huo)得(de)足夠的(de)(de)(de)(de)(de)能(neng)(neng)(neng)量，從而(er)(er)導致接(jie)收(shou)(shou)端(duan)高頻整流(liu)濾(lv)波(bo)后(hou)(hou)的(de)(de)(de)(de)(de)輸(shu)(shu)出(chu)電(dian)(dian)(dian)壓(ya)(ya)出(chu)現(xian)跌(die)落。由于無(wu)線(xian)(xian)電(dian)(dian)(dian)能(neng)(neng)(neng)傳輸(shu)(shu)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)接(jie)收(shou)(shou)端(duan)是無(wu)源(yuan)(yuan)的(de)(de)(de)(de)(de)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)，控(kong)制(zhi)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)運行的(de)(de)(de)(de)(de)MCU等(deng)(deng)部件都是通過電(dian)(dian)(dian)磁場(chang)(chang)中獲(huo)得(de)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)能(neng)(neng)(neng)供電(dian)(dian)(dian)。如(ru)果接(jie)收(shou)(shou)端(duan)的(de)(de)(de)(de)(de)輸(shu)(shu)出(chu)電(dian)(dian)(dian)壓(ya)(ya)跌(die)落幅度過大的(de)(de)(de)(de)(de)話(hua)，嚴(yan)重(zhong)(zhong)時(shi)(shi)可(ke)(ke)以使接(jie)收(shou)(shou)端(duan)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)處(chu)于短時(shi)(shi)掉電(dian)(dian)(dian)狀(zhuang)態，從而(er)(er)使系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)工作(zuo)在不(bu)(bu)可(ke)(ke)控(kong)的(de)(de)(de)(de)(de)異(yi)常狀(zhuang)態。同理，負(fu)(fu)載(zai)(zai)(zai)(zai)從重(zhong)(zhong)載(zai)(zai)(zai)(zai)向輕載(zai)(zai)(zai)(zai)切(qie)(qie)換(huan)時(shi)(shi)，也會由于系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)暫時(shi)(shi)失諧(xie)(xie)，而(er)(er)導致接(jie)收(shou)(shou)端(duan)整流(liu)后(hou)(hou)輸(shu)(shu)出(chu)電(dian)(dian)(dian)壓(ya)(ya)過高，非常容(rong)易(yi)燒毀后(hou)(hou)級的(de)(de)(de)(de)(de)穩(wen)壓(ya)(ya)電(dian)(dian)(dian)路，或(huo)是提高了后(hou)(hou)級電(dian)(dian)(dian)路的(de)(de)(de)(de)(de)輸(shu)(shu)入電(dian)(dian)(dian)壓(ya)(ya)應(ying)力(li)。總結而(er)(er)言(yan)，無(wu)線(xian)(xian)電(dian)(dian)(dian)能(neng)(neng)(neng)傳輸(shu)(shu)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)接(jie)收(shou)(shou)端(duan)是從電(dian)(dian)(dian)磁場(chang)(chang)中獲(huo)取能(neng)(neng)(neng)量，不(bu)(bu)是一(yi)個穩(wen)定(ding)的(de)(de)(de)(de)(de)恒流(liu)源(yuan)(yuan)或(huo)恒壓(ya)(ya)源(yuan)(yuan)，很(hen)容(rong)易(yi)受到負(fu)(fu)載(zai)(zai)(zai)(zai)等(deng)(deng)變化產生(sheng)(sheng)劇烈影響。而(er)(er)在傳統(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)系(xi)(xi)(xi)統(tong)(tong)(tong)(tong)是從電(dian)(dian)(dian)網中獲(huo)取電(dian)(dian)(dian)能(neng)(neng)(neng)(通常為穩(wen)定(ding)的(de)(de)(de)(de)(de)恒壓(ya)(ya)源(yuan)(yuan))，當發生(sheng)(sheng)輕重(zhong)(zhong)負(fu)(fu)載(zai)(zai)(zai)(zai)之(zhi)間進行切(qie)(qie)換(huan)時(shi)(shi)，電(dian)(dian)(dian)源(yuan)(yuan)輸(shu)(shu)出(chu)的(de)(de)(de)(de)(de)變化通常很(hen)小。

技術實現要素：

為了(le)解(jie)決上述問題(ti)，本發(fa)明提(ti)(ti)供了(le)一種無(wu)線電能傳輸系(xi)統及其負載(zai)切換控制方法，該發(fa)明能有效的(de)防止無(wu)線接收(shou)端整流后(hou)電壓的(de)過(guo)度起伏，提(ti)(ti)高了(le)無(wu)線電能傳輸系(xi)統工作的(de)穩定性。

為(wei)了達到上(shang)述目的(de)，本發明采用的(de)技術方案為(wei)：

一種無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)傳(chuan)(chuan)輸(shu)(shu)(shu)系(xi)(xi)統，包括(kuo)(kuo)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網的(de)(de)(de)無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)發(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)，以及(ji)可(ke)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)發(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)的(de)(de)(de)無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)，無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)發(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)包括(kuo)(kuo)可(ke)傳(chuan)(chuan)輸(shu)(shu)(shu)無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)的(de)(de)(de)發(fa)(fa)(fa)射(she)(she)(she)(she)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)，以及(ji)可(ke)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)通(tong)(tong)訊信(xin)號(hao)的(de)(de)(de)無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)信(xin)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)模(mo)塊(kuai)(kuai)；無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)外連(lian)(lian)(lian)負(fu)載，包括(kuo)(kuo)可(ke)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)發(fa)(fa)(fa)射(she)(she)(she)(she)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)中發(fa)(fa)(fa)射(she)(she)(she)(she)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)的(de)(de)(de)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)，以及(ji)可(ke)將接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)輸(shu)(shu)(shu)出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)轉化為通(tong)(tong)訊信(xin)號(hao)傳(chuan)(chuan)輸(shu)(shu)(shu)至(zhi)通(tong)(tong)信(xin)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)模(mo)塊(kuai)(kuai)的(de)(de)(de)無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)信(xin)發(fa)(fa)(fa)射(she)(she)(she)(she)模(mo)塊(kuai)(kuai)，無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)發(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)還包括(kuo)(kuo)發(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)流(liu)濾(lv)(lv)波(bo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)，發(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)流(liu)濾(lv)(lv)波(bo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的(de)(de)(de)輸(shu)(shu)(shu)出(chu)(chu)(chu)端(duan)(duan)(duan)(duan)(duan)(duan)并聯有(you)逆(ni)(ni)變(bian)(bian)(bian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)和線(xian)(xian)(xian)(xian)(xian)(xian)(xian)性穩壓(ya)(ya)器，發(fa)(fa)(fa)射(she)(she)(she)(she)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)逆(ni)(ni)變(bian)(bian)(bian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的(de)(de)(de)輸(shu)(shu)(shu)出(chu)(chu)(chu)端(duan)(duan)(duan)(duan)(duan)(duan)；發(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)MCU連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)性穩壓(ya)(ya)器的(de)(de)(de)輸(shu)(shu)(shu)出(chu)(chu)(chu)端(duan)(duan)(duan)(duan)(duan)(duan)和無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)信(xin)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)模(mo)塊(kuai)(kuai)的(de)(de)(de)輸(shu)(shu)(shu)出(chu)(chu)(chu)端(duan)(duan)(duan)(duan)(duan)(duan)，發(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)MCU電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)連(lian)(lian)(lian)逆(ni)(ni)變(bian)(bian)(bian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的(de)(de)(de)控制端(duan)(duan)(duan)(duan)(duan)(duan)，以控制逆(ni)(ni)變(bian)(bian)(bian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)中轉換(huan)(huan)的(de)(de)(de)高頻(pin)(pin)交流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)頻(pin)(pin)率；無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)的(de)(de)(de)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)有(you)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)流(liu)濾(lv)(lv)波(bo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)，接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)流(liu)濾(lv)(lv)波(bo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的(de)(de)(de)輸(shu)(shu)(shu)出(chu)(chu)(chu)端(duan)(duan)(duan)(duan)(duan)(duan)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)DC/DC變(bian)(bian)(bian)換(huan)(huan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)，DC/DC變(bian)(bian)(bian)換(huan)(huan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)輸(shu)(shu)(shu)出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)采樣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)，以實(shi)時采集接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)流(liu)濾(lv)(lv)波(bo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)整(zheng)流(liu)后(hou)(hou)(hou)的(de)(de)(de)輸(shu)(shu)(shu)出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，輸(shu)(shu)(shu)出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)采樣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的(de)(de)(de)輸(shu)(shu)(shu)出(chu)(chu)(chu)端(duan)(duan)(duan)(duan)(duan)(duan)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)MCU，接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)MCU連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)信(xin)發(fa)(fa)(fa)射(she)(she)(she)(she)模(mo)塊(kuai)(kuai)，以將轉換(huan)(huan)后(hou)(hou)(hou)的(de)(de)(de)數字信(xin)號(hao)傳(chuan)(chuan)輸(shu)(shu)(shu)至(zhi)無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)信(xin)發(fa)(fa)(fa)射(she)(she)(she)(she)模(mo)塊(kuai)(kuai)形成通(tong)(tong)訊信(xin)號(hao)；其(qi)中，接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)MCU實(shi)時采集接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)流(liu)濾(lv)(lv)波(bo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)的(de)(de)(de)輸(shu)(shu)(shu)出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，并根據采集電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)計算負(fu)載切換(huan)(huan)后(hou)(hou)(hou)的(de)(de)(de)系(xi)(xi)統諧振頻(pin)(pin)率，以將該頻(pin)(pin)率通(tong)(tong)過無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)信(xin)發(fa)(fa)(fa)射(she)(she)(she)(she)模(mo)塊(kuai)(kuai)和無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)信(xin)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)模(mo)塊(kuai)(kuai)發(fa)(fa)(fa)送至(zhi)發(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)MCU，發(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)MCU根據判斷信(xin)號(hao)調整(zheng)無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)發(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)的(de)(de)(de)起始工作頻(pin)(pin)率，從(cong)而抑(yi)制無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)流(liu)后(hou)(hou)(hou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)波(bo)動，以維持無(wu)(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)傳(chuan)(chuan)輸(shu)(shu)(shu)系(xi)(xi)統的(de)(de)(de)穩定。

一種無線電(dian)(dian)能(neng)傳(chuan)輸(shu)(shu)(shu)系統中負(fu)載切換(huan)時的(de)控制方法，包括以下步驟：S1：啟動無線電(dian)(dian)能(neng)傳(chuan)輸(shu)(shu)(shu)系統；S2：發(fa)射線圈發(fa)射電(dian)(dian)能(neng)，接(jie)收(shou)線圈接(jie)收(shou)電(dian)(dian)能(neng)，并(bing)經(jing)過接(jie)收(shou)端整流(liu)濾(lv)(lv)波(bo)電(dian)(dian)路(lu)整流(liu)濾(lv)(lv)波(bo)后(hou)輸(shu)(shu)(shu)出；S3：輸(shu)(shu)(shu)出電(dian)(dian)壓(ya)(ya)(ya)采樣電(dian)(dian)路(lu)實時采集整流(liu)濾(lv)(lv)波(bo)后(hou)的(de)電(dian)(dian)壓(ya)(ya)(ya)，并(bing)將(jiang)該電(dian)(dian)壓(ya)(ya)(ya)輸(shu)(shu)(shu)入至接(jie)收(shou)端MCU；S4：接(jie)收(shou)端MCU接(jie)收(shou)輸(shu)(shu)(shu)出電(dian)(dian)壓(ya)(ya)(ya)采樣電(dian)(dian)路(lu)中的(de)電(dian)(dian)壓(ya)(ya)(ya)信號，并(bing)比對單位(wei)時間內電(dian)(dian)壓(ya)(ya)(ya)幅值的(de)變(bian)化值是否在(zai)預(yu)設突變(bian)范圍內：

如在預設(she)突變范圍內，則重復執行步驟S2；

如不在預(yu)設突(tu)變(bian)(bian)范圍內，接收(shou)端(duan)MCU根據采集的(de)電(dian)壓(ya)信號(hao)計(ji)算負載(zai)變(bian)(bian)化(hua)前以(yi)及變(bian)(bian)化(hua)后的(de)系統諧振(zhen)頻(pin)率，并(bing)將該變(bian)(bian)化(hua)后頻(pin)率通過無線通信發(fa)射(she)模塊和(he)無線通信接收(shou)模塊發(fa)送至發(fa)射(she)端(duan)MCU中，發(fa)射(she)端(duan)MCU根據該信號(hao)調(diao)整新的(de)起始輸出頻(pin)率控(kong)制信號(hao)，并(bing)執行(xing)步驟S2，直(zhi)至接收(shou)端(duan)MCU單位時(shi)間內電(dian)壓(ya)幅值(zhi)的(de)變(bian)(bian)化(hua)值(zhi)在預(yu)設突(tu)變(bian)(bian)范圍內。

作為本發(fa)(fa)明的(de)進一步(bu)優化，上述S4的(de)步(bu)驟中，接收端(duan)(duan)MCU比對單位時(shi)間內電(dian)壓(ya)幅值(zhi)的(de)變(bian)化值(zhi)不(bu)在預設突變(bian)范圍內時(shi)，如該單位時(shi)間內電(dian)壓(ya)幅值(zhi)快(kuai)速跌落(luo)，則接收端(duan)(duan)MCU判(pan)定負(fu)載由輕(qing)載變(bian)重載，接收端(duan)(duan)MCU計算(suan)負(fu)載變(bian)化后(hou)的(de)系統(tong)諧振頻(pin)(pin)(pin)率并發(fa)(fa)送(song)至發(fa)(fa)射(she)端(duan)(duan)MCU中時(shi)，發(fa)(fa)射(she)端(duan)(duan)MCU的(de)輸出頻(pin)(pin)(pin)率控(kong)制(zhi)信號控(kong)制(zhi)逆變(bian)電(dian)路輸出新的(de)起始工作頻(pin)(pin)(pin)率。

作(zuo)為本發(fa)明的進一步優化，上述S4的步驟中(zhong)，接收(shou)(shou)端(duan)(duan)MCU比對(dui)單(dan)位(wei)時(shi)間(jian)內電(dian)壓(ya)幅值(zhi)的變(bian)(bian)化值(zhi)不在預設(she)突變(bian)(bian)范圍內時(shi)，如該單(dan)位(wei)時(shi)間(jian)內電(dian)壓(ya)幅值(zhi)快速升高，則(ze)接收(shou)(shou)端(duan)(duan)MCU判定負(fu)載(zai)(zai)由重載(zai)(zai)變(bian)(bian)輕載(zai)(zai)，接收(shou)(shou)端(duan)(duan)MCU計(ji)算負(fu)載(zai)(zai)變(bian)(bian)化后的諧振頻率(lv)并發(fa)送至發(fa)射端(duan)(duan)MCU中(zhong)時(shi)，發(fa)射端(duan)(duan)MCU的輸出頻率(lv)控制(zhi)信號控制(zhi)逆變(bian)(bian)電(dian)路(lu)輸出新的起始工(gong)作(zuo)頻率(lv)。

與(yu)現(xian)有技術(shu)相比，本(ben)發明的優點和積極(ji)效(xiao)果在于：

本發(fa)明(ming)的無(wu)線電(dian)能傳輸(shu)系(xi)統(tong)及其負(fu)載切(qie)換時(shi)(shi)的控制(zhi)方法，其通過接(jie)收(shou)(shou)端MCU實時(shi)(shi)采(cai)集(ji)接(jie)收(shou)(shou)端整流濾波(bo)電(dian)路的輸(shu)出電(dian)壓，并通過單(dan)位(wei)時(shi)(shi)間內輸(shu)出電(dian)壓變(bian)化幅(fu)度的對比(bi)，進而(er)判(pan)斷負(fu)載是否發(fa)生(sheng)變(bian)化，進一步傳輸(shu)至(zhi)無(wu)線發(fa)射端，無(wu)線發(fa)射端根據(ju)該信號(hao)計算新(xin)(xin)的系(xi)統(tong)諧(xie)振(zhen)頻率并快(kuai)速調整系(xi)統(tong)的起始工作頻率到新(xin)(xin)的系(xi)統(tong)諧(xie)振(zhen)頻率附近，從而(er)有效的抑制(zhi)了整流后電(dian)壓的劇烈波(bo)動，快(kuai)速達(da)到系(xi)統(tong)的重新(xin)(xin)穩定(ding)狀態(tai)。

附圖說明

圖(tu)1為本發明無(wu)線(xian)電能傳輸系統(tong)的示(shi)意圖(tu)；

圖(tu)2為本(ben)發明無線電能(neng)傳輸(shu)系統中(zhong)負載(zai)切換時控(kong)制方法的流(liu)程圖(tu)。

具體實施方式

下(xia)面，通過(guo)示例性的(de)實施(shi)方式對本(ben)發明進行(xing)具體描述。然而應(ying)當理解，在沒(mei)有(you)進一(yi)步敘述的(de)情(qing)況下(xia)，一(yi)個實施(shi)方式中的(de)元件、結構和特(te)征也可以(yi)有(you)益地結合(he)到其他實施(shi)方式中。

參見圖1，是本發(fa)(fa)(fa)(fa)(fa)明無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)電(dian)(dian)能(neng)(neng)傳(chuan)(chuan)(chuan)輸(shu)(shu)(shu)系統的(de)(de)(de)(de)(de)(de)(de)(de)示意圖，如(ru)圖1所示，本發(fa)(fa)(fa)(fa)(fa)明的(de)(de)(de)(de)(de)(de)(de)(de)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)電(dian)(dian)能(neng)(neng)傳(chuan)(chuan)(chuan)輸(shu)(shu)(shu)系統，包(bao)(bao)括(kuo)連(lian)接(jie)(jie)(jie)(jie)(jie)于電(dian)(dian)網的(de)(de)(de)(de)(de)(de)(de)(de)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)，以及(ji)(ji)可(ke)(ke)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)電(dian)(dian)能(neng)(neng)的(de)(de)(de)(de)(de)(de)(de)(de)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)，無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)包(bao)(bao)括(kuo)可(ke)(ke)傳(chuan)(chuan)(chuan)輸(shu)(shu)(shu)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)電(dian)(dian)能(neng)(neng)的(de)(de)(de)(de)(de)(de)(de)(de)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)，以及(ji)(ji)可(ke)(ke)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)通(tong)(tong)(tong)(tong)訊信(xin)(xin)(xin)號(hao)的(de)(de)(de)(de)(de)(de)(de)(de)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)模(mo)(mo)(mo)(mo)塊；無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)外連(lian)負(fu)載(zai)，包(bao)(bao)括(kuo)可(ke)(ke)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)中(zhong)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)電(dian)(dian)能(neng)(neng)的(de)(de)(de)(de)(de)(de)(de)(de)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)，以及(ji)(ji)可(ke)(ke)將接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)輸(shu)(shu)(shu)出(chu)電(dian)(dian)能(neng)(neng)轉化(hua)為通(tong)(tong)(tong)(tong)訊信(xin)(xin)(xin)號(hao)傳(chuan)(chuan)(chuan)輸(shu)(shu)(shu)至通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)模(mo)(mo)(mo)(mo)塊的(de)(de)(de)(de)(de)(de)(de)(de)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)模(mo)(mo)(mo)(mo)塊，無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)還包(bao)(bao)括(kuo)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)(zheng)(zheng)流(liu)(liu)濾波電(dian)(dian)路(lu)(lu)，發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)(zheng)(zheng)流(liu)(liu)濾波電(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)并(bing)聯有(you)逆(ni)(ni)變(bian)電(dian)(dian)路(lu)(lu)和(he)線(xian)(xian)(xian)(xian)(xian)(xian)性(xing)(xing)穩壓(ya)(ya)器，發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)連(lian)接(jie)(jie)(jie)(jie)(jie)逆(ni)(ni)變(bian)電(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)；發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)MCU連(lian)接(jie)(jie)(jie)(jie)(jie)線(xian)(xian)(xian)(xian)(xian)(xian)性(xing)(xing)穩壓(ya)(ya)器的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)和(he)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)模(mo)(mo)(mo)(mo)塊的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)，發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)MCU電(dian)(dian)連(lian)逆(ni)(ni)變(bian)電(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)控制(zhi)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)，以控制(zhi)逆(ni)(ni)變(bian)電(dian)(dian)路(lu)(lu)中(zhong)轉換(huan)(huan)的(de)(de)(de)(de)(de)(de)(de)(de)高頻(pin)(pin)交流(liu)(liu)電(dian)(dian)頻(pin)(pin)率(lv)；無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)的(de)(de)(de)(de)(de)(de)(de)(de)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)連(lian)接(jie)(jie)(jie)(jie)(jie)有(you)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)(zheng)(zheng)流(liu)(liu)濾波電(dian)(dian)路(lu)(lu)，接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)(zheng)(zheng)流(liu)(liu)濾波電(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)連(lian)接(jie)(jie)(jie)(jie)(jie)DC/DC變(bian)換(huan)(huan)電(dian)(dian)路(lu)(lu)，DC/DC變(bian)換(huan)(huan)電(dian)(dian)路(lu)(lu)連(lian)接(jie)(jie)(jie)(jie)(jie)輸(shu)(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)采(cai)樣電(dian)(dian)路(lu)(lu)，以實(shi)時采(cai)集接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)(zheng)(zheng)流(liu)(liu)濾波電(dian)(dian)路(lu)(lu)整(zheng)(zheng)(zheng)流(liu)(liu)后(hou)的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)，輸(shu)(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)采(cai)樣電(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)連(lian)接(jie)(jie)(jie)(jie)(jie)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)MCU，接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)MCU連(lian)接(jie)(jie)(jie)(jie)(jie)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)模(mo)(mo)(mo)(mo)塊，以將轉換(huan)(huan)后(hou)的(de)(de)(de)(de)(de)(de)(de)(de)數(shu)字信(xin)(xin)(xin)號(hao)傳(chuan)(chuan)(chuan)輸(shu)(shu)(shu)至無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)模(mo)(mo)(mo)(mo)塊形成通(tong)(tong)(tong)(tong)訊信(xin)(xin)(xin)號(hao)；其中(zhong)，接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)MCU實(shi)時采(cai)集接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)(zheng)(zheng)流(liu)(liu)濾波電(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)，通(tong)(tong)(tong)(tong)過輸(shu)(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)變(bian)化(hua)的(de)(de)(de)(de)(de)(de)(de)(de)幅值實(shi)時判斷(duan)負(fu)載(zai)是否(fou)發(fa)(fa)(fa)(fa)(fa)生突變(bian)，并(bing)根(gen)據采(cai)集電(dian)(dian)壓(ya)(ya)值計算(suan)負(fu)載(zai)切換(huan)(huan)后(hou)的(de)(de)(de)(de)(de)(de)(de)(de)系統諧(xie)振頻(pin)(pin)率(lv)，以將該頻(pin)(pin)率(lv)通(tong)(tong)(tong)(tong)過無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)模(mo)(mo)(mo)(mo)塊和(he)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)模(mo)(mo)(mo)(mo)塊發(fa)(fa)(fa)(fa)(fa)送至發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)MCU，發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)MCU根(gen)據接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)MCU的(de)(de)(de)(de)(de)(de)(de)(de)計算(suan)值調整(zheng)(zheng)(zheng)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)發(fa)(fa)(fa)(fa)(fa)射(she)(she)(she)(she)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)的(de)(de)(de)(de)(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)新(xin)的(de)(de)(de)(de)(de)(de)(de)(de)起(qi)始調節頻(pin)(pin)率(lv)，從而抑制(zhi)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)接(jie)(jie)(jie)(jie)(jie)收(shou)(shou)(shou)端(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)整(zheng)(zheng)(zheng)流(liu)(liu)后(hou)電(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)跌幅，以維持(chi)無(wu)(wu)(wu)(wu)線(xian)(xian)(xian)(xian)(xian)(xian)電(dian)(dian)能(neng)(neng)傳(chuan)(chuan)(chuan)輸(shu)(shu)(shu)系統的(de)(de)(de)(de)(de)(de)(de)(de)穩定狀態。

上(shang)述中(zhong)(zhong)(zhong)(zhong)，進一步說明(ming)，接(jie)(jie)收(shou)端(duan)MCU具體包(bao)括可(ke)實時(shi)接(jie)(jie)收(shou)整(zheng)流(liu)濾(lv)波(bo)電(dian)路(lu)中(zhong)(zhong)(zhong)(zhong)輸出電(dian)壓(ya)(ya)的(de)(de)采集模(mo)塊(kuai)(kuai)，可(ke)將(jiang)模(mo)擬信號(hao)轉為(wei)數(shu)字信號(hao)的(de)(de)AD模(mo)數(shu)轉換模(mo)塊(kuai)(kuai)，可(ke)去除采集電(dian)壓(ya)(ya)中(zhong)(zhong)(zhong)(zhong)噪聲信號(hao)的(de)(de)濾(lv)波(bo)模(mo)塊(kuai)(kuai)，可(ke)存儲(chu)采集信號(hao)的(de)(de)存儲(chu)模(mo)塊(kuai)(kuai)，可(ke)實時(shi)判斷(duan)單(dan)位時(shi)間(jian)(jian)內電(dian)壓(ya)(ya)幅值(zhi)變(bian)化是(shi)否突(tu)(tu)(tu)(tu)變(bian)的(de)(de)比(bi)(bi)對模(mo)塊(kuai)(kuai)，預(yu)(yu)存工(gong)作(zuo)(zuo)頻(pin)(pin)率(lv)(lv)(lv)計(ji)(ji)(ji)算公式的(de)(de)計(ji)(ji)(ji)算模(mo)塊(kuai)(kuai)，以(yi)及可(ke)根據(ju)(ju)比(bi)(bi)對模(mo)塊(kuai)(kuai)中(zhong)(zhong)(zhong)(zhong)產生信號(hao)生成(cheng)控制信號(hao)的(de)(de)控制模(mo)塊(kuai)(kuai)，其中(zhong)(zhong)(zhong)(zhong)比(bi)(bi)對模(mo)塊(kuai)(kuai)中(zhong)(zhong)(zhong)(zhong)預(yu)(yu)設(she)突(tu)(tu)(tu)(tu)變(bian)范圍(wei)(wei)(wei)值(zhi)，單(dan)位時(shi)間(jian)(jian)內電(dian)壓(ya)(ya)幅值(zhi)變(bian)化與該(gai)預(yu)(yu)設(she)突(tu)(tu)(tu)(tu)變(bian)范圍(wei)(wei)(wei)值(zhi)比(bi)(bi)較(jiao)，如在(zai)該(gai)突(tu)(tu)(tu)(tu)變(bian)范圍(wei)(wei)(wei)內，則(ze)該(gai)無(wu)線(xian)電(dian)能系統繼續維持現(xian)有頻(pin)(pin)率(lv)(lv)(lv)運行；如超(chao)出突(tu)(tu)(tu)(tu)變(bian)范圍(wei)(wei)(wei)，則(ze)形成(cheng)突(tu)(tu)(tu)(tu)變(bian)信號(hao)，計(ji)(ji)(ji)算模(mo)塊(kuai)(kuai)中(zhong)(zhong)(zhong)(zhong)預(yu)(yu)存可(ke)根據(ju)(ju)采集電(dian)壓(ya)(ya)計(ji)(ji)(ji)算工(gong)作(zuo)(zuo)頻(pin)(pin)率(lv)(lv)(lv)的(de)(de)計(ji)(ji)(ji)算模(mo)塊(kuai)(kuai)，進一步將(jiang)該(gai)計(ji)(ji)(ji)算后(hou)的(de)(de)工(gong)作(zuo)(zuo)頻(pin)(pin)率(lv)(lv)(lv)傳(chuan)送至發射端(duan)MCU，發射端(duan)MCU控制系統按照該(gai)計(ji)(ji)(ji)算后(hou)的(de)(de)工(gong)作(zuo)(zuo)頻(pin)(pin)率(lv)(lv)(lv)控制無(wu)線(xian)發射端(duan)中(zhong)(zhong)(zhong)(zhong)逆變(bian)電(dian)路(lu)的(de)(de)跳變(bian)到新的(de)(de)起始工(gong)作(zuo)(zuo)頻(pin)(pin)率(lv)(lv)(lv)，直至接(jie)(jie)收(shou)端(duan)MCU中(zhong)(zhong)(zhong)(zhong)比(bi)(bi)對模(mo)塊(kuai)(kuai)中(zhong)(zhong)(zhong)(zhong)比(bi)(bi)對發現(xian)單(dan)位時(shi)間(jian)(jian)內電(dian)壓(ya)(ya)幅值(zhi)變(bian)化在(zai)該(gai)預(yu)(yu)設(she)突(tu)(tu)(tu)(tu)變(bian)范圍(wei)(wei)(wei)值(zhi)中(zhong)(zhong)(zhong)(zhong)。

另外(wai)，發射端MCU與(yu)逆(ni)變(bian)電(dian)路之間連接有驅動電(dian)路，以(yi)將(jiang)控(kong)制(zhi)(zhi)模塊中形成的控(kong)制(zhi)(zhi)信號通過(guo)驅動電(dian)路控(kong)制(zhi)(zhi)逆(ni)變(bian)電(dian)路。

參見圖(tu)2，是本(ben)發明無線電(dian)能傳輸系統(tong)中負載(zai)切(qie)換時的控(kong)制(zhi)方法的流程(cheng)示意圖(tu)。如圖(tu)2所示，本(ben)發明中提供(gong)的一(yi)種無線電(dian)能傳輸系統(tong)中負載(zai)切(qie)換時的控(kong)制(zhi)方法，包括以下步驟：

S1：啟(qi)動無線(xian)電能傳(chuan)輸系統；

S2：發射線(xian)(xian)圈發射電(dian)能，接(jie)收(shou)線(xian)(xian)圈接(jie)收(shou)電(dian)能，并經過接(jie)收(shou)端(duan)整流濾(lv)波電(dian)路整流濾(lv)波后輸(shu)出；

S3：輸出電(dian)壓(ya)采(cai)樣(yang)電(dian)路實時采(cai)集(ji)整流濾波后的電(dian)壓(ya)，并(bing)將該電(dian)壓(ya)輸入至接收端(duan)MCU；

S4：接(jie)收端MCU接(jie)收輸出電壓(ya)(ya)采樣電路中的(de)電壓(ya)(ya)信號，并(bing)比對單(dan)位(wei)時間內(nei)電壓(ya)(ya)幅值的(de)變化值是否在預設突變范圍(wei)內(nei)：

如在預設(she)突變范圍內(nei)，則重復執行步驟S2；

如(ru)不在預設突變(bian)范圍內，接(jie)(jie)收端(duan)MCU根據(ju)采集的(de)電(dian)壓(ya)信(xin)(xin)號計算負載變(bian)化前以及(ji)變(bian)化后的(de)系統諧振頻(pin)率，并(bing)將該變(bian)化后頻(pin)率通過(guo)無線通信(xin)(xin)發(fa)(fa)射(she)模(mo)(mo)塊(kuai)和無線通信(xin)(xin)接(jie)(jie)收模(mo)(mo)塊(kuai)發(fa)(fa)送至發(fa)(fa)射(she)端(duan)MCU中，發(fa)(fa)射(she)端(duan)MCU根據(ju)該信(xin)(xin)號調(diao)整輸出新的(de)起始頻(pin)率控制信(xin)(xin)號，并(bing)執行步驟S2，直至接(jie)(jie)收端(duan)MCU單位時間(jian)內電(dian)壓(ya)幅(fu)值(zhi)的(de)變(bian)化值(zhi)在預設突變(bian)范圍內。

另(ling)外，在(zai)上述S4的(de)步驟中(zhong)，接(jie)收端(duan)(duan)(duan)MCU比對單位時(shi)間(jian)內電壓(ya)幅值(zhi)的(de)變化(hua)值(zhi)不(bu)在(zai)預設突變范圍內時(shi)，如該單位時(shi)間(jian)內電壓(ya)幅值(zhi)快(kuai)速跌落，則接(jie)收端(duan)(duan)(duan)MCU判定(ding)負載(zai)由輕載(zai)變重載(zai)，接(jie)收端(duan)(duan)(duan)MCU計算負載(zai)變化(hua)后(hou)的(de)系統諧振頻(pin)率并(bing)發(fa)(fa)送至發(fa)(fa)射端(duan)(duan)(duan)MCU中(zhong)時(shi)，發(fa)(fa)射端(duan)(duan)(duan)MCU的(de)輸出(chu)(chu)頻(pin)率控(kong)制信號(hao)控(kong)制逆變電路輸出(chu)(chu)頻(pin)率到新的(de)起始工(gong)作頻(pin)率。

在上述(shu)S4的(de)(de)步驟中(zhong)，接收(shou)端(duan)MCU比(bi)對單(dan)位時間內電(dian)壓(ya)幅值(zhi)(zhi)的(de)(de)變(bian)化(hua)值(zhi)(zhi)不在預(yu)設突變(bian)范圍內時，如該單(dan)位時間內電(dian)壓(ya)幅值(zhi)(zhi)快速上升，則接收(shou)端(duan)MCU判(pan)定負載(zai)由重載(zai)變(bian)輕載(zai)，接收(shou)端(duan)MCU計(ji)算負載(zai)變(bian)化(hua)后的(de)(de)工作頻率(lv)(lv)并發送至發射端(duan)MCU中(zhong)時，發射端(duan)MCU的(de)(de)輸出頻率(lv)(lv)控制信號控制逆變(bian)電(dian)路輸出頻率(lv)(lv)到新的(de)(de)起始(shi)工作頻率(lv)(lv)。

對上述控制(zhi)方(fang)法(fa)進一步詳細說(shuo)明，因系(xi)(xi)統(tong)的(de)(de)負(fu)載(zai)發(fa)生變化時，需要(yao)保持無線電(dian)能(neng)傳(chuan)輸系(xi)(xi)統(tong)始(shi)終(zhong)工(gong)(gong)作在(zai)諧振頻率附(fu)近的(de)(de)頻率上，這樣才能(neng)保證輸出足夠的(de)(de)功(gong)率及較(jiao)高的(de)(de)系(xi)(xi)統(tong)效率。在(zai)本發(fa)明中，負(fu)載(zai)切換前和(he)切換后系(xi)(xi)統(tong)的(de)(de)工(gong)(gong)作頻率可以根據如下(xia)的(de)(de)方(fang)法(fa)進行(xing)計算(suan)(以發(fa)射端(duan)和(he)接收端(duan)都(dou)為(wei)串(chuan)聯(lian)補償(chang)的(de)(de)SS型補償(chang)拓撲為(wei)例，并且(qie)系(xi)(xi)統(tong)工(gong)(gong)作在(zai)感性區)，而該計算(suan)公(gong)式即(ji)為(wei)接收端(duan)MCU中預存的(de)(de)計算(suan)公(gong)式，具體(ti)如下(xia)：

接收端電路等效阻抗為：

接(jie)收端(duan)電路到發射端(duan)的反射阻(zu)抗為(wei)：

則無線電能傳輸系(xi)統的總(zong)阻(zu)抗為(wei)：

當總(zong)阻抗Zt的虛部為零(ling)時的ω，則為無線電能傳輸(shu)系統的諧(xie)振頻率點。即

Im[Z_t]＝0

聯(lian)立即可解系(xi)統的諧振頻率。

假設負載在切換之前的工作起始頻率為F_L，負載切換之后的起始頻率為F_H，F_L和F_H通過(guo)上述(shu)公式可具體確(que)定(ding)無線電能(neng)傳輸系統的諧振頻率。

在(zai)負載切換過(guo)程中，由于(yu)無線電(dian)能傳輸系統(tong)處于(yu)暫時(shi)的(de)失諧(xie)狀態，接收端的(de)整流(liu)濾波后(hou)輸出電(dian)壓出現快(kuai)(kuai)速(su)的(de)跌(die)落。為此，本發明采(cai)用基于(yu)負載變化的(de)跳頻控制(zhi)，快(kuai)(kuai)速(su)將系統(tong)的(de)工(gong)(gong)作頻率調整到重載或輕載狀態下所(suo)對應的(de)系統(tong)工(gong)(gong)作頻率，從而快(kuai)(kuai)速(su)恢復系統(tong)的(de)諧(xie)振(zhen)狀態。

為了系統能夠實時知道何時發生了負載從輕載到重載或重載到輕載的切換，本發明中設置的輸出電壓采樣電路，可實時監測接收端的整流濾波后輸出電壓的變化的方法。接收端的輸出電壓對應為工作頻率點F_L或F_H附近對應的Vrect，在未發生負載變化時，通常Vrect只在非常小的范圍內波動(比如波動范圍△Vrect小于5V)。若無線電能傳輸系統檢測到Vrect的波動遠遠超過正常的波動范圍△Vrect，如短時間變化到N倍的△Vrect(N通常可以取為3-4倍)，此時可以認為無線電能傳輸系統發生了負載的切換。這時接收端MCU可以根據變化的方向(如果Vrect變高，則對應重載到輕載；如果Vrect變低，則對應輕載到重載切換)，通過無線通信的發射與接收模塊，通知無線電能傳輸系統的發射端將系統的工作頻率切換到相應的F_L或F_H，從而讓無線電(dian)能傳輸系統快速進(jin)入一(yi)個新(xin)的穩(wen)定的諧振狀態(tai)。

針對(dui)上(shang)述方法，進一步詳細描(miao)述如下：

系(xi)(xi)統上電(dian)后，接(jie)收(shou)(shou)(shou)端(duan)MCU實時采集(ji)(ji)并處理整流濾波電(dian)路輸出的(de)電(dian)壓(ya)，同時通過(guo)比對(dui)單(dan)位時間內電(dian)壓(ya)幅值(zhi)(zhi)變(bian)化值(zhi)(zhi)與預(yu)(yu)設突(tu)變(bian)范圍值(zhi)(zhi)，進一步判斷(duan)負載(zai)是否發(fa)(fa)生變(bian)化；當(dang)出現了輕重載(zai)切換的(de)瞬(shun)間，接(jie)收(shou)(shou)(shou)端(duan)MCU根據采集(ji)(ji)的(de)電(dian)壓(ya)值(zhi)(zhi)計算(suan)負載(zai)變(bian)化后的(de)系(xi)(xi)統諧振頻(pin)率(lv)(lv)，并通過(guo)無線(xian)通信(xin)發(fa)(fa)射(she)(she)模塊(kuai)將該(gai)頻(pin)率(lv)(lv)信(xin)號(hao)通過(guo)無線(xian)通訊接(jie)收(shou)(shou)(shou)模塊(kuai)和(he)(he)無線(xian)通訊接(jie)收(shou)(shou)(shou)模塊(kuai)對(dui)數據進行(xing)(xing)數據解密(mi)、格式解析(xi)、校驗和(he)(he)驗證以及數據提取的(de)操作，以取出控(kong)制信(xin)號(hao)；無線(xian)發(fa)(fa)射(she)(she)端(duan)MCU接(jie)收(shou)(shou)(shou)到該(gai)信(xin)號(hao)后，進一步控(kong)制逆變(bian)電(dian)路輸出頻(pin)率(lv)(lv)，以調整無線(xian)電(dian)能傳輸系(xi)(xi)統的(de)起始工作頻(pin)率(lv)(lv)，直至該(gai)接(jie)收(shou)(shou)(shou)端(duan)MCU在比對(dui)單(dan)位時間內電(dian)壓(ya)幅值(zhi)(zhi)變(bian)化值(zhi)(zhi)與預(yu)(yu)設突(tu)變(bian)范圍值(zhi)(zhi)時，電(dian)壓(ya)幅值(zhi)(zhi)變(bian)化值(zhi)(zhi)在預(yu)(yu)設突(tu)變(bian)范圍值(zhi)(zhi)內，則繼續(xu)穩(wen)定運行(xing)(xing)。

本發(fa)明通過接收端MCU實時(shi)(shi)采集接收端整(zheng)流(liu)濾波電路的輸(shu)出(chu)電壓，并(bing)通過單位時(shi)(shi)間(jian)內輸(shu)出(chu)電壓的對比(bi)，進(jin)(jin)而(er)判(pan)斷負載是否(fou)發(fa)生變化，進(jin)(jin)一步(bu)計(ji)算系統(tong)新(xin)(xin)的諧振頻率(lv)并(bing)通過通信模塊傳輸(shu)至無線(xian)發(fa)射(she)端，無線(xian)發(fa)射(she)端根據該信號調整(zheng)新(xin)(xin)的起(qi)始工作(zuo)頻率(lv)，從而(er)有(you)效的抑制了整(zheng)流(liu)后電壓的劇烈波動(dong)，快速達到系統(tong)的重新(xin)(xin)穩(wen)定(ding)狀(zhuang)態。