{"id":60911,"date":"2023-04-21T14:59:09","date_gmt":"2023-04-21T19:59:09","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-much-electricity-can-piezoelectric-generator-produce\/"},"modified":"2025-01-27T06:06:43","modified_gmt":"2025-01-27T11:06:43","slug":"how-much-electricity-can-piezoelectric-generator-produce","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/how-much-electricity-can-piezoelectric-generator-produce\/","title":{"rendered":"V\u00fdkon piezoelektrick\u00fdch gener\u00e1tor\u016f: fakta a limity"},"content":{"rendered":"<p>Piezoelektrick\u00e9 gener\u00e1tory p\u0159edstavuj\u00ed fascinuj\u00edc\u00ed technologii schopnou p\u0159em\u011b\u0148ovat mechanickou energii na energii elektrickou.  Z\u00edsk\u00e1v\u00e1n\u00ed energie t\u00edmto zp\u016fsobem je atraktivn\u00ed pro mnoho aplikac\u00ed, od miniaturn\u00edch senzor\u016f a\u017e po v\u011bt\u0161\u00ed syst\u00e9my pro sb\u011br energie. Nicm\u00e9n\u011b, kl\u00ed\u010dovou ot\u00e1zkou z\u016fst\u00e1v\u00e1: kolik elekt\u0159iny piezoelektrick\u00fd gener\u00e1tor skute\u010dn\u011b dok\u00e1\u017ee vyprodukovat? Odpov\u011b\u010f nen\u00ed jednoduch\u00e1 a z\u00e1vis\u00ed na mnoha faktorech.<\/p>\n<h3>Vliv materi\u00e1lu a geometrie<\/h3>\n<p>V\u00fdkon piezoelektrick\u00e9ho gener\u00e1toru je siln\u011b ovlivn\u011bn typem pou\u017eit\u00e9ho piezoelektrick\u00e9ho materi\u00e1lu.  Materi\u00e1ly jako je k\u0159emen, PZT (zirkoni\u010ditan olovnato-titani\u010dit\u00fd) a r\u016fzn\u00e9 polymern\u00ed piezoelektrick\u00e9 materi\u00e1ly vykazuj\u00ed odli\u0161n\u00e9 piezoelektrick\u00e9 koeficienty, kter\u00e9 ur\u010duj\u00ed mno\u017estv\u00ed n\u00e1boje generovan\u00e9ho p\u0159i dan\u00e9 deformaci.  Geometrie gener\u00e1toru, v\u010detn\u011b jeho rozm\u011br\u016f, tvaru a konfigurace elektrod, rovn\u011b\u017e hraje kl\u00ed\u010dovou roli. Optimalizovan\u00e1 geometrie m\u016f\u017ee maximalizovat efektivitu p\u0159em\u011bny energie.<\/p>\n<h3>Vliv frekvence a amplitudy vibrac\u00ed<\/h3>\n<p>Kl\u00ed\u010dov\u00fdm faktorem ovliv\u0148uj\u00edc\u00edm produkci energie je frekvence a amplituda mechanick\u00fdch vibrac\u00ed, kter\u00fdm je gener\u00e1tor vystaven.  V\u011bt\u0161\u00ed amplituda vibrac\u00ed obvykle vede k vy\u0161\u0161\u00edmu v\u00fdstupn\u00edmu nap\u011bt\u00ed a proudu.  Frekvence vibrac\u00ed by m\u011bla b\u00fdt optimalizov\u00e1na pro rezonan\u010dn\u00ed frekvenci gener\u00e1toru, aby se dos\u00e1hlo maxim\u00e1ln\u00edho v\u00fdkonu.  Mimo rezonanci se \u00fa\u010dinnost v\u00fdrazn\u011b sni\u017euje.<\/p>\n<h3>Tabulka: Porovn\u00e1n\u00ed r\u016fzn\u00fdch piezoelektrick\u00fdch materi\u00e1l\u016f<\/h3>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Materi\u00e1l<\/th>\n<th>Piezoelektrick\u00fd koeficient (pC\/N)<\/th>\n<th>Hustota (g\/cm\u00b3)<\/th>\n<th>Relativn\u00ed permitivita<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>K\u0159emen<\/td>\n<td>2-3<\/td>\n<td>2.65<\/td>\n<td>4.5<\/td>\n<\/tr>\n<tr>\n<td>PZT (typ 5A)<\/td>\n<td>370-400<\/td>\n<td>7.5<\/td>\n<td>1700<\/td>\n<\/tr>\n<tr>\n<td>Polyvinylidenfluorid (PVDF)<\/td>\n<td>-20 a\u017e -30<\/td>\n<td>1.78<\/td>\n<td>8-12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Faktor vlivu okoln\u00edho prost\u0159ed\u00ed<\/h3>\n<p>Okoln\u00ed prost\u0159ed\u00ed m\u016f\u017ee tak\u00e9 ovlivnit v\u00fdkon piezoelektrick\u00e9ho gener\u00e1toru.  Teplota m\u016f\u017ee ovlivnit piezoelektrick\u00e9 vlastnosti materi\u00e1lu a v d\u016fsledku toho i mno\u017estv\u00ed generovan\u00e9 energie.  Vlhkost m\u016f\u017ee v\u00e9st k degradaci n\u011bkter\u00fdch piezoelektrick\u00fdch materi\u00e1l\u016f, co\u017e sni\u017euje jejich \u017eivotnost a v\u00fdkon.<\/p>\n<h3>Praktick\u00e9 p\u0159\u00edklady a omezen\u00ed<\/h3>\n<p>Praktick\u00fd v\u00fdstupn\u00ed v\u00fdkon piezoelektrick\u00fdch gener\u00e1tor\u016f je obvykle v \u0159\u00e1du mikrowatt\u016f a\u017e miliwatt\u016f.  Pro v\u011bt\u0161inu aplikac\u00ed je to relativn\u011b n\u00edzk\u00fd v\u00fdkon, kter\u00fd vy\u017eaduje efektivn\u00ed metody skladov\u00e1n\u00ed a \u0159\u00edzen\u00ed energie.  Nap\u0159\u00edklad, pro nap\u00e1jen\u00ed mal\u00fdch senzor\u016f to m\u016f\u017ee b\u00fdt dosta\u010duj\u00edc\u00ed, ale pro nap\u00e1jen\u00ed v\u011bt\u0161\u00edch za\u0159\u00edzen\u00ed je nutn\u00e9 pou\u017e\u00edt velk\u00e9 mno\u017estv\u00ed gener\u00e1tor\u016f a efektivn\u00ed syst\u00e9m sb\u011bru energie.  V\u00fdvoj nov\u00fdch materi\u00e1l\u016f a optimalizace konstrukce piezoelektrick\u00fdch gener\u00e1tor\u016f se zam\u011b\u0159uj\u00ed na zv\u00fd\u0161en\u00ed jejich efektivity a v\u00fdkonu.<\/p>\n<h3>Z\u00e1v\u011br<\/h3>\n<p>Kvantifikace energie produkovan\u00e9 piezoelektrick\u00fdm gener\u00e1torem je komplexn\u00ed ot\u00e1zka, z\u00e1visl\u00e1 na mnoha prom\u011bnn\u00fdch.  A\u010dkoliv se jedn\u00e1 o technologii s velk\u00fdm potenci\u00e1lem, jej\u00ed sou\u010dasn\u00fd v\u00fdkon je omezen\u00fd.  V\u00fdzkum a v\u00fdvoj v t\u00e9to oblasti sm\u011b\u0159uj\u00ed k p\u0159ekon\u00e1n\u00ed t\u011bchto omezen\u00ed a k vytvo\u0159en\u00ed efektivn\u011bj\u0161\u00edch a v\u00fdkonn\u011bj\u0161\u00edch piezoelektrick\u00fdch gener\u00e1tor\u016f pro \u0161ir\u0161\u00ed \u0161k\u00e1lu aplikac\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Piezoelektrick\u00e9 gener\u00e1tory p\u0159edstavuj\u00ed fascinuj\u00edc\u00ed technologii schopnou p\u0159em\u011b\u0148ovat mechanickou energii na energii elektrickou. Z\u00edsk\u00e1v\u00e1n\u00ed energie t\u00edmto zp\u016fsobem je atraktivn\u00ed pro mnoho aplikac\u00ed, od miniaturn\u00edch senzor\u016f a\u017e po v\u011bt\u0161\u00ed syst\u00e9my pro sb\u011br energie. Nicm\u00e9n\u011b, kl\u00ed\u010dovou ot\u00e1zkou z\u016fst\u00e1v\u00e1: kolik elekt\u0159iny piezoelektrick\u00fd gener\u00e1tor skute\u010dn\u011b dok\u00e1\u017ee vyprodukovat? Odpov\u011b\u010f nen\u00ed jednoduch\u00e1 a z\u00e1vis\u00ed na mnoha faktorech. Vliv materi\u00e1lu a geometrie V\u00fdkon<\/p>\n","protected":false},"author":1,"featured_media":24652,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-60911","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/60911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/comments?post=60911"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/60911\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/24652"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=60911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=60911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=60911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}