201027775 六、發明說明： 【發明所屬之技術領域】 本發明涉及一種光電伏打裝置、光電伏打模組、光電伏 打裝置組裝用的次構造和方法。 光電伏打模組（亦稱爲太陽能模組）通常是由多個電性互 相連接的太陽能單元（cell)所構成，各太陽能單元經由光伏 打效應而將太陽光中所包含的輻射能量轉換成電能。 【先前技術】 光電伏打模組用來將太陽能直接轉換成電能。薄層式太 陽能模組具有光活性層，其厚度是在數十奈米至數微米之 間。通常，光活性層是與接觸層和可能存在的反射層以大 面積方式施加在基板（例如，玻璃晶圓）上。藉助於多個結 構化步驟，以形成多個各別的條形太陽能單元，其在電性 上互相串聯。條形太陽能單元（亦稱爲單元條）之寬度例如 爲數公分。通常，電流降低器施加在外部的單元條上，藉 由電流降低器來連接薄層式太陽能模組且可將所產生的電 功率排出。 大部分情況是將另一平坦式材料（例如，另一玻璃晶圓） 層疊在已有塗層的基板上，以保護該光活性層使不會受損 且不受氣候所影響。爲了強化太陽能模組，可使用環形框 (例如由鋁構成），特別是當使用一種無承載性或可撓性的 基板時。若未設置一種框，例如在使用玻璃晶圓作爲基板 及覆蓋物時，則稱爲無框的太陽能模組。 201027775 多個用來放大電流的光電伏打模組的組合體稱爲光電伏 打裝置。通常，光電伏打模組設有一種框，其藉由次（sub) 構造而固定在一種立架上。在露天設備中，光電伏打模組 固定在一種安裝在一立架上的次構造上。在有頂蓋的設備 中，光電伏打模組通常固定在次構造上，次構造安裝在屋 頂上的載體構造上。然而’，光電伏打模組亦可設有一種次 構造，其作爲與屋頂之間的介面。 Φ 在與光電伏打裝置的型態無關下，光電伏打模組通常可 設有一框或設置爲無框的模組。在將無框的太陽能模組予 以固定時，一種固定系統通常須安裝在無框的太陽能模組 上，藉此使太陽能模組在下一步驟中固定在一載體裝置 上。爲了此一目的，使用多個固定用的夾子已爲人所知， 這些夾子在無框的薄層太陽能模組的邊緣圍繞著。這些固 定用的夾子設計成使各單元條不會被遮蔽或不會被覆蓋， 否則太陽能模組之效率會下降。 Φ 上述方式的缺點是，固定用的系統在太陽能模組之面向 光線的上側上未搭接於或只在很狹窄的範圍中搭接於太陽 能模組，以便儘可能不覆蓋各單元條。這樣會造成不利的 力分配且因此在將模組安裝至載體裝置上時或在操作時會 使模組受損，例如，在模組操作時會受到氣候所影響。特 別是在以大量的光電伏打模組來組裝光電伏打裝置時，例 如，在所謂空白表面-太陽能裝置中，上述安裝方式將更昂 貴且耗時。 201027775 【發明內容】 本發明的目的是對光電伏打模組提供一種簡易的安裝方 式，可確保對光電伏打模組達成一種可靠的、成本有利的 且簡易而快速的安裝》 本發明的第一態樣中，上述目的藉由一種光電伏打裝置 來達成，其包括： -次構造，用來容納至少一光電伏打模組， Φ -具有背面載體之光電伏打模組，其藉二個黏合面安裝在 光電伏打模組之背面上，該二個黏合面互相隔開一距離而 配置著且設有一連接件，以及 -掛軌，其配置在次構造上，該背面載體和該掛軌須互相 對準，使該光電伏打模組和該背面載體的至少一部分能以 正鎖定的方式安裝在該掛軌中且使該背面載體固定在該掛 軌中。 依據本發明，光電伏打模組在背面上，即，在將輻射能 ® 量轉換成電能時的主入射方向的相反側上，設有一背面載 體。此背面載體在機械上用來強化該光電伏打模組，這特 別是在大的無框模組中是有利的’此乃因這樣可防止該模 組各邊緣上可能發生的應力。這些應力例如於安裝期間在 對光電伏打模組進行操控時會發生。因此，爲了安裝光電 伏打模組，只需使用該背面載體，光電伏打模組不必設有 框或類似物。此外，不會由於框元件或模組夾子而發生陰 影，以便在將輻射能量轉換成電能時可達成高的效率。該 201027775 背面載體導入至一種靜止於次構造上的掛軌中。該掛軌因 此依據背面載體之形式來調整，使背面載體的至少一部分 以正鎖定的方式位於該掛軌中。於是，該掛軌可配置在垂 直方向中，以便由重力來促成該光電伏打模組及該背面載 體被導入至該掛軌中。 在另一佈置中，該背面載體的橫切面可形成爲帽形，V-形或U-形。 ^ 依據一種佈置，該背面載體形成爲一種克服硬度用的工 件，其中在帽形，V-形或U-形的腰上配置至少二個黏合面。 於是，各黏合面沿著該背面載體形成爲多個區段，使各黏 合面互相平行且相隔開一距離而配置著。該連接件和黏合 面可以單件的工件來形成。例如，可使用鋼-棒或鋁-棒， 其可簡易地以成本有利的方式來製成背面載體。 在另一佈置中，背面載體之黏合面藉黏合條或黏合層（較 佳是水膠層），與至少一光電伏打模組相連接。 Φ 因此，可簡易地且成本有利地在背面載體和光電伏打模 組之間提供一穩定且持續的連接。此外，藉由黏合作用， 亦可在背面載體和光電伏打模組之間達成一種電性絕緣， 使多個光電伏打模組可用導線相連接。 在另一佈置中，在背面載體和次構造之間另外設置一隔 離層，使背面載體和次構造在電鍍時相隔離。 藉由使用該隔離層，可達成一種電性絕緣，以防止接觸 區的腐蝕，其在該背面載體和該次構造之各別元件使用不 201027775 同的金屬或金屬化合物時會發生。 在另一佈置中，須選取該背面載體的材料，使該材料之 熱膨脹係數在預設的極限內等於至少一光電伏打模組的熱 膨脹係數。於是，可避免或完全消除因溫度切換而可能發 生的機械應力，以延長光電伏打裝置之壽命。 在另一佈置中，背面載體和掛軌藉一種夾緊連接件固 定，該夾緊連接件在背面載體和掛軌上具有一對固持元件。 Φ 依據一佈置，光電伏打模組在唯一的步驟中須對準次構 造且固定至該次構造上，以確保光電伏打模組能可靠地、 成本有利地、簡易地且快速地安裝》 在另一佈置中，各固持元件分別配置在背面載體和掛軌 上相面對的側面上，其中第一固持元件配置在掛軌上且第 二固持元件配置在背面載體上，使第一和第二固持元件可 互相接合。 依據上述佈置，可使光電伏打模組對準次構造且固定至 ® 該次構造上而不需螺栓。因此，可確保光電伏打模組能可 靠地、成本有利地、簡易地且快速地安裝。 在另一佈置中，該掛軌之第一固持元件具有突出的元件。 光電伏打模組藉由安裝在掛軌上而對準該次構造。此種 在該次構造上的固定藉該突出的元件來達成。該突出元件 形成各固持元件的一部分。因此，可提供一種固定，其可 防止光電伏打模組之側滑，此乃因在偏離之後該光電伏打 模組可藉該突出的元件來固定。 201027775 在另一佈置中，該背面載體之第二固持元件形成開口， 該掛軌之第一固持元件之突出元件接合至此開口中。 依據上述佈置，可將光電伏打模組固定在該掛軌上，此 時掛軌之第一固持元件之突出元件接合至開口中，這樣可 確保光電伏打模組能可靠地、成本有利地、簡易地且快速 地安裝。 在另一佈置中，第一固持元件配置在掛軌之第一末端上。 Φ 因此，可將光電伏打模組掛在掛軌之第一末端上，使光 電伏打裝置可設有多個光電伏打模組。 又，在另一佈置中，可設有其它固持元件，較佳是包括 螺栓連接件。 在光電伏打模組已固定在掛軌上之後，其它固持元件可 用作額外的安全件而安裝著，這樣可確保光電伏打模組能 可靠地、成本有利地、簡易地且快速地安裝。 在另一佈置中，其它固持元件配置在掛軌和背面載體之 Φ 與第一末端相對向的末端上。 將其它固持元件安裝在相對向的末端上可使光電伏打模 組之穩定性提高。在光電伏打模組已固定在掛軌上之後， 額外的固定可在各別工作過程中進行。 在另一佈置中，光電伏打裝置包括至少一第一衍條和一 第二桁條，其與次構造相連接，且桁條上固定著掛軌。 在上述佈置中，掛軌以較長方式來形成，以跨接該二個 桁條間的距離且亦像靜態時所需的寬度一樣可容納該背面 201027775 載體。此外’可藉螺栓或夾子將該背面載體固定在該掛軌 上。 在另一佈置中，第一桁條安裝成中央桁條，其配置在另 二個桁條之間》 在上述佈置中，該掛軌只以短的連接件來形成，這樣可 掛住下方的模組且可調整上方的模組。另外可直接分別在 下方的桁條或上方的桁條上使模組固定》 Φ 在另一佈置中，該掛軌覆蓋二個或更多個光電伏打模組。 依據本實施形式，多個光電伏打模組藉一掛軌組裝成一 大的模組，其可安裝在次構造上》 在另一佈置中，該掛軌配置在垂直的方向中。 因此，光電伏打模組在重力方向中配置在該掛軌上，使 光電伏打裝置在組裝時不需額外的安全件即可靜止於固定 位置中，這樣可確保光電伏打模組能可靠地、成本有利地、 簡易地且快速地安裝。 ® 在另一佈置中，該掛軌配置在水平方向中。 此種佈置例如使光電伏打模組的安裝可由側面來達成。 在另一種態樣中，上述目的藉一種光電伏打模組來達 成，其具有背面載體，此背面載體可安裝在掛軌中，其中 該背面載體安裝在光電伏打模組之背面且包括至少二個互 相隔開一距離的黏合面，該二個黏合面設有一可導入至該 掛軌中的連接件。 依據本發明，光電伏打模組在背面上設有背面載體，該 -10- 201027775 背面是指與使輻射能量轉換成電能時的主入射方向相反的 側面。該背面載體因此作爲該光電伏打模組用的機械強化 件，這樣特別是在大的無框模組中是有利的，此乃因可預 先防止模組邊緣上可能發生的應力。因此，爲了安裝該光 電伏打模組，只需使用該背面載體而不必在光電伏打模組 上設置一框或類似物。此外，此安裝系統亦不會發生陰影， 在將輻射能量轉換成電能時可達成高的效率。 Φ 在另一佈置中，光電伏打模組以無框之薄層-光電伏打模 組來形成。 就輻射能量轉換成電能以及製造成本而言，薄層-光電伏 打模組是太陽能模組之另一種成本有利的模組。 在另一態樣中，上述目的藉光電伏打裝置之容納一個或 多個光電伏打模組用之次構造來達成，其中該次構造具有 掛軌，此掛軌配置在該次構造上，且定向成使光電伏打模 組及一背面載體可安裝至該掛軌中。 Φ 依據本發明，該光電伏打模組在背面上設有一背面載 體，所謂背面是指與使輻射能量轉換成電能時的主入射方 向相反的側面。該背面載體導入至靜止於次構造上的掛軌 中。該掛軌因此依據該背面載體之形式來調整，使背面載 體的至少一部分以正鎖定的方式位於該掛軌中。於是，該 掛軌可配置在垂直的方向中，以便由重力來促成該光電伏 打模組和該背面載體被導入至該掛軌上。 在另一態樣中，上述目的藉由光電伏打裝置之組裝方法 -11- 201027775 來達成，其包括以下各步驟： -製備一次構造以容納一個或多個光電伏打模組，其具有 一配置在該次構造上的掛軌； -製備一個或多個光電伏打模組，其分別具有一個背面載 體’其中該背面載體藉二個黏合面安裝在光電伏打模組之 背面上’各黏合面配置成互相隔開一距離且設有一連接件； -將該光電伏打模組和背面載體安裝在掛軌中。 Φ 因此，藉掛軌可簡易地進行光電伏打模組之安裝，同時 可設有一種側滑防止件。另一種固定方式可在各別的工作 過程中進行。模組的定向藉由掛軌之安裝來進行。次構造 之完整的預安裝是可能的。該光電伏打模組在最後的工作 過程中必須被掛入且可能須另外預先固定。藉由適當地選 取所使用的材料或使用其它隔離層，可防止該光電伏打模 組在電鍍時與該次構造相隔離，亦可防止接觸區的腐蝕。 一種可擴大的二列式構造和三列式構造是可能的。 ® 在另一佈置中，使用一種準則來安裝該掛軌。 爲了可儘可能簡易地安裝光電伏打模組，須使用一種準 則來安裝該掛軌，該準則用來確定掛軌的方位以及各掛軌 之間的距離，以便準確地安裝光電伏打模組。 以下將依據圖式中的實施例來詳述本發明。以下將依據 第1圖至第8圖中的實施例來說明本發明其它有利的實施 形式。於此，功能相同或作用相同的元件、區域和結構設 有相同的參考符號。只要元件、區域或結構在功能上相對 -12- 201027775 應，則不在每一實施例中重複說明。 【實施方式】 第1A圖顯示光電伏打裝置100之透視圖，光電伏打裝 置100具有多個光電伏打模組102，其中第1A圖中顯示出 光敏感側之光電伏打模組102。爲了將配置在遠離該光敏感 側之此側上的元件顯示出來而使次構造104更清楚，只以 虛線來表示二個光電伏打模組102之輪廓。 φ 光電伏打模組102在第1A圖之實施例中例如可以無框 的薄膜太陽能模組來形成。無框的薄膜太陽能模組例如以 上下串接（tandem)的太陽能單元來形成，其中一種多晶-或 微晶PIN-二極體配置在不定形之PIN-二極體下方作爲活性 層，以便在將入射的輻射能量轉換成電能時整體上可達成 較高的效率。 然而，光電伏打裝置100之實施形式特別是不只在無框 的薄膜太陽能模組時適合用作光電伏打模組1 02。當然，光 • 電伏打模組102在以下的各實施例中同樣亦可以是多晶太 陽能模組。 如第1A圖中所示，光電伏打裝置包括一立架106,其與 次構造104相連接。立架106例如藉適當的固定元件連接 至接地層，以形成一種空的表面太陽能裝置。然而，亦可 將該次構造安裝在建物屋頂或平面式屋頂。此外，第1A圖 中顯示一種掛軌108,其與次構造104相連接。每一光電伏 打模組102例如分別設有二個掛軌108,其在垂直方向中互 -13- 201027775 相平行地配置在次構造104上。然而，每一光電伏 102亦可設有不同數目的掛軌1〇8，例如，可只設有 軌108或設有多於二個的掛軌1〇8。如以下的實施例 掛軌108用來容納光電伏打模組102。此處，一背 110安裝在光電伏打模組102之背面上。光電伏打模 與該背面載體110固定在該掛軌108中。 第1A圖所示光電伏打裝置1〇〇只用來說明本發 φ 置之構造。此行的專家本身理解：不同數目之光電 組102可用在不同的尺寸和配置中。因此，本發明 二列光電伏打模組102所形成的配置而是亦可任意 至三列-或多列的配置。光電伏打模組102可具有 小。因此，光電伏打模組102可設置成具有5平方 大小。 每一光電伏打模組1 02例如可分別設有二個背 108,其在垂直方向中平行地配置在該次構造104上。 ® 亦可將背面載體108配置在水平方向中，如第1B圖 所示。此外，每一光電伏打模組102亦可設置不同 背面載體108，例如，可設置一個背面載體108或多 之背面載體108。亦可使用一個或多個背面載體108 或多個光電伏打模組中，此時例如四個光電伏打模 配置在二個互相平行配置的背面載體108上，如第1 方）所示。 現參考第2圖，以下將詳述該掛軌108中光電伏 打模組 一個掛 所示， 面載體 組102 明的裝 伏打模 不限於 地擴大 任意大 公尺之 面載體 ，然而， (左方） 數目的 於二個 於二個 組 102 B圖（左 打模組 -14- 201027775 102和背面載體110之支件。第2圖顯示光電伏打模組之橫 切面，其依據第1A圖所示的切線A-B來顯示。 如第2圖所示，該背面載體110具有二個黏合面112, 其互相平行且相隔一距離11 4。連接件116將該二個黏合面 112互相連接而形成一單一組件的工件，其即爲該背面載體 110。如第2圖所示，該背面載體110之橫切面顯示成帽形。 然而，亦可使用其它形式，例如，V-形或U-形。該背面載 0 體110用來使該光電伏打模組102達成機械上的穩定。依 據一實施形式，背面載體110之黏合面112藉一黏合條或 黏合層而與光電伏打模組102相連接。此種黏合式的連接 一方面用來將背面載體110機械式地固定在光電伏打模組 102上。另一方面該黏合層亦可用作電性絕緣層，以使光電 伏打模組102在電性上與該背面載體110相隔開。在另一 實施形式中，亦可在背面載體110和掛軌108或次構造104 之間安裝一由非導電的材料構成的隔離層，以便造成一種 ® 電鍍上的隔離，使接觸區的腐蝕減弱。 又，如第2圖所示，背面載體110安裝在掛軌108中。 於是，該背周載體110具有一形式，其在遠離該光電伏打 模組102之此側上依據掛軌108之形式來調整。因此，可 另外形成背面載體110,使其熱膨脹係數在預設之限度內等 於該光電伏打模組102之熱膨脹係數，以使溫度變化時所 造成的機械負載較小。 請參.閱第3圖.，以下將對該背面載體如何固定至掛軌中 -15- 201027775 進行描述。第3圖中顯示該背載面載體110和該掛軌108 之透視的側面圖。依據此一實施形式，該背面載體和 掛軌108之固定藉由一種夾緊連接件120來達成。該掛軌 108和背面載體1 10分別具有多個固持元件，其可互相接 合。如第3圖所示，掛軌108之固持元件124形成爲突出 之元件，其例如可具有一種如第3圖所示的鈎形。 該背面載體1 10之對應的固持元件122形成爲開口。例 Λ 如，在背面載體110中沖製出或銑切出一種狹縫形式的開 口。掛軌108之第一固持元件124和背面載體110之第二 固持元件122互相接合，使該背面載體110能以其上的光 電伏打模組102來可靠地固定著。第3圖中只顯示一對固 持元件122和124。然而，亦可在背面載體110上或掛軌 108上配置其它固持元件，例如，可在第一夾緊連接件120 中將固持元件配置在相面對的側面上。 請參閱第4圖，以下將描述如何將光電伏打模組102及 © 背面載體110安裝在次構造104上。第4圖因此是沿著線 第1圖之C-D所看到之橫切面圖。 掛軌108在垂直方向（即重力場的方向）中配置在次構造 104上。掛軌108上之突出元件124向上對準而配置著，使 光電伏打模組102及其背面載體110由於重力而固定在固 持元件124中。因此，光電伏打模組102固定在掛軌108 上而不必另外形成一種螺栓連接。 然而，同樣亦可在形成夾緊式連接之後藉固持元件 201027775 124,經由額外的螺栓連接來固定光電伏打模組102 面載體110。 該掛軌108配置在具有二個桁條之次構造104上 在水平方向中延伸。下桁條128和上桁條130例如 或鋁沖製件來製成。該掛軌108完全覆蓋該上桁條 該下桁條128之間的區域。包括掛軌108、二個桁 和130以及次構造104之構造例如藉由螺栓連接而^ φ 請參閱第5圖，其顯示光電伏打裝置100之另一 式。第5圖之實施形式不同於第4圖之處在於該次_ 除了該上桁條130和該下桁條128之外另具有一中 132° 第5圖之實施形式中，該掛軌108配置在該中間相 上方之一區域中且未完全覆蓋該上桁條130和該 128之間的區域。掛軌108之突出元件124另接合至 打模組102之背面載體110中。在該上桁條130和 ® 條128上形成多個其它固定件140以作爲額外的安 其能以突出元件或螺栓連接件來形成。 第4圖和第5圖所示實施形式顯示空白表面·太陽 之光電伏打模組102之二列式配置。然而，可理解 所示實施形式只是舉例而已。因此，第4圖和第5 的槪念亦可擴大至三列式或多列式光電伏打裝置。 同樣亦能以屋頂安裝用的立架來取代該立架106。 請參閱第6A圖至第6G圖，以下將詳述第4圖之 或該背 ，桁條 可由鋼 130和 條128 _成。 實施形 :造 104 間桁條 :條 132 下桁條 光電伏 該下桁 定件， 能裝置 的是： 圖所示 此外， 光電伏 -17- 201027775 打裝置之模組安裝方式。 光電伏打模組之安裝之出發點是次構造1〇4’其固定在 該立架106上。次構造104在其下端具有下衍條128且在 上端具有上桁條130，如第6A圖所示。該立架106、次構 造104以及該二個衍條128和130例如可藉由螺栓連接件 來構成。 然後，如第6B圖所示進行該掛軌1〇8之安裝。該掛軌 φ 108在垂直方向中固定在上桁條130和下桁條128上。有利 的方式是使用一空白區安裝該掛軌108。因此，在平行的方 位中可以一調整至光電伏打模組的大小之預定距離來配置 多個掛軌108 » 如第6C圖所示，在安裝該掛軌108之後進行下部光電伏 打模組102之懸掛。下部光電伏打模組102藉背面載體110 導入至掛軌108之突出元件124中。 如第6D圖所示，只掛入下部光電伏打模組102,使其固 © 定時不需螺栓連接件。 下一步驟中，如第6E圖所示，上部光電伏打模組102 藉背面載體110導入至掛軌108之突出元件124中。 結果，獲得一種光電伏打裝置110，其中該二個光電伏 打模組102掛入至掛軌1〇8中。上述過程對多個光電伏打 模組102重複進行，該些光電伏打模組1〇2相鄰地固定在 各自的掛軌108上》 如第6G圖所示，現在可將光電伏打模組1〇2固定在掛 -18- 201027775 軌108上。此種固定例如可包括螺栓連接方式，以將光電 伏打模組102持續地固定在掛軌1〇8中。 以下將依據第7A圖至第7D圖來詳述第5圖之光電伏打 裝置之組裝。 本發明方法之出發點是次構造104，其包括下部桁條 128、中央桁條132和上部桁條130。次構造另外具有一立 架106，如第7A圖所示。 φ 在下一步驟中，如第7B圖所示，進行該掛軌108之安裝。 掛軌108固定在中央衍條132上方之區域中。掛軌108在 中央桁條132和下部桁條128之間的區域中具有第一固持 元件，其形成突出元件124的形式。在中央桁條132和上 部桁條130之間的區域中配置第一固持元件，其形成突出 的元件124的形式。 如第7C圖所示，下部光電伏打模組102掛入至中央桁條 和下部桁條之間的區域中之突出元件124中。 © 已完成掛入的模組如第7D圖所示。 在下一步驟中，如第7E圖所示，現在將上部光電伏打 模組102設定在掛軌108中。 如第7F圖所示，上部光電伏打模組102又藉由接合至背 面載體110中之該突出元件124而固定在位置上。 最後，如第7G圖所示，將上述二個光電伏打模組102 固定在下部桁條128和上部衍條130上。 光電伏打裝置100之上述安裝方式已描述在第6A圖至 -19- 201027775 第6G圖以及第7A圖至第7G圖中，其中使用掛軌108，且 光電伏打模組102之背面載體110掛入至掛軌108中。於 ^，掛軌108之形式須與該背面載體110之形式相配合。 掛軌108設有特殊之突出元件124,其在懸掛或設定該光電 伏打模組102時鈎入至背面載體110中之相對應而形成的 開口中且因此可在唯一的步驟中確保該光電伏打模組可對 準至次構造上且固定在次構造上。 φ 以下將參考第8圖以依據流程圖來說明光電伏打裝置之 組裝步驟。 步驟810中，製備一種次構造104以容納一個或多個具 有掛軌108之光電伏打模組102,該掛軌108在垂直方向中 配置在次構造104上。 步驟820中，製備一個或多個分別具有背面載體110之 光電伏打模組102，該背面載體110安裝在光電伏打模組 102之背面上且包括至少二個黏合面112,其互相平行地相 ® 隔一距離114配置，且設有一連接件116。 步驟83 0中將該具有背面載體110之光電伏打模組102 組裝至該掛軌108中。於是，可使大面積之光電伏打模組 達成一種簡易且成本有利的安裝方式，其例如可形成一空 白表面之太陽能裝置。 本發明當然不限於依據各實施例中所作的描述。反之， 本發明包含每一新的特徵和各特徵的每一種組合，特別是 包含各申請專利範圍·或不同實施例之各別特徵之每一種組 -20- 201027775 合，當相關的特徵或相關的組合本身未明顯地顯示在各申 請專利範圍中或各實施例中時亦屬本發明。 【圖式簡單說明】. 第1A圖是本發明之一實施形式的光電伏打模組之透 視圖。 第1B圖是本發明之一實施形式的光電伏打模組之俯 視圖。 0 第2圖是本發明之一實施形式的光電伏打模組之橫切 面圖。 第3圖是本發明之一實施形式的光電伏打模組之透視 圖。 第4圖是本發明之一實施形式的光電伏打模組之橫切 面圖。 第5圖是本發明之一實施形式的光電伏打模組之橫切 面圖。 ® 第6A圖至第6G圖是本發明之一實施形式的光電伏打 裝置之光電伏打模組安裝時之橫切面圖。 第7A圖至第7G圖是本發明之一實施形式的光電伏打 裝置之光電伏打模組安裝時之橫切面圖。 第8圖是本發明之一實施形式的光電伏打模組之安裝 方法之流程圖。 【主要元件符號說明】 100 光電伏打裝置 -21 - 201027775 102 光 電 伏 打 模 組 104 次 構 造 106 架 108 掛 軌 110 背 面 載 體 112 黏 合 面 114 距 離 116 連 接 件 120 夾 緊 連 接 件 122 第 二 固 持 元 件 124 第 一 固 持 元 件 128 下 部 桁 條 130 上 桁 條 132 中 央 桁 條 Ο -22-201027775 VI. Description of the Invention: [Technical Field] The present invention relates to a sub-structure and method for assembling a photovoltaic device, a photovoltaic module, and a photovoltaic device. Photovoltaic modules (also known as solar modules) are usually composed of a plurality of electrically interconnected solar cells, each of which converts the radiant energy contained in sunlight into a photovoltaic effect. Electrical energy. [Prior Art] Photovoltaic modules are used to convert solar energy directly into electrical energy. The thin-layer solar module has a photoactive layer having a thickness of between several tens of nanometers and several micrometers. Typically, the photoactive layer is applied to the substrate (e.g., a glass wafer) in a large area with the contact layer and possibly the reflective layer. A plurality of individualization steps are formed by means of a plurality of structural steps which are electrically connected in series with one another. The width of the strip solar unit (also known as the strip) is, for example, a few centimeters. Typically, a current reducer is applied to the outer unit strip, and the thin layer solar module is connected by a current reducer and the generated electric power can be discharged. In most cases, another flat material (e.g., another glass wafer) is laminated on the substrate of the existing coating to protect the photoactive layer from damage and weather. In order to reinforce the solar module, a ring frame (for example made of aluminum) can be used, especially when a non-load-bearing or flexible substrate is used. If a frame is not provided, for example, when a glass wafer is used as the substrate and the cover, it is called a frameless solar module. 201027775 A combination of multiple photovoltaic modules for amplifying current is called a photovoltaic device. Typically, a photovoltaic module is provided with a frame that is secured to a stand by a sub-configuration. In open air equipment, the photovoltaic module is attached to a secondary structure mounted on a stand. In a covered device, the photovoltaic module is typically attached to a secondary construction that is mounted to the carrier structure on the roof. However, the photovoltaic module can also be provided with a secondary construction as an interface to the roof. Φ In contrast to the type of photovoltaic device, the photovoltaic module can usually be provided with a frame or a frameless module. When the frameless solar module is fixed, a fixing system usually has to be mounted on the frameless solar module, whereby the solar module is fixed to a carrier device in the next step. For this purpose, it has been known to use a plurality of fixing clips which are surrounded by the edges of the frameless thin-film solar module. These fixed clips are designed such that the individual strips are not obscured or covered, otherwise the efficiency of the solar module will decrease. Φ The disadvantage of the above method is that the fixing system does not overlap or only overlap the solar module on the upper side of the solar module facing the light, so as not to cover the individual strips as much as possible. This can result in unfavorable force distribution and therefore damage to the module when the module is mounted to the carrier device or during operation, for example, when the module is operated, it is affected by the weather. In particular, when a photovoltaic device is assembled with a large number of photovoltaic modules, for example, in a so-called blank surface-solar device, the above-described mounting method will be more expensive and time consuming. 201027775 SUMMARY OF THE INVENTION The object of the present invention is to provide an easy installation method for a photovoltaic module, which ensures a reliable, cost-effective and simple and quick installation of the photovoltaic module. In one aspect, the above object is achieved by a photoelectric voltaic device comprising: a secondary structure for accommodating at least one photovoltaic module, Φ - a photovoltaic module having a back carrier, The adhesive surfaces are mounted on the back surface of the photovoltaic module, the two adhesive surfaces are disposed at a distance from each other and are provided with a connecting member, and a hanging rail is disposed on the secondary structure, the back carrier and the The rails must be aligned with each other such that at least a portion of the photovoltaic module and the back carrier can be mounted in the rail in a positive locking manner and the back carrier is secured in the rail. According to the present invention, the photovoltaic module is provided with a back carrier on the back side, i.e., on the opposite side of the main incident direction when converting the radiant energy into electrical energy. This back carrier is mechanically used to reinforce the photovoltaic module, which is particularly advantageous in large frameless modules' which is such that stresses that may occur on the edges of the module are prevented. These stresses can occur, for example, during operation of the photovoltaic module during installation. Therefore, in order to mount the photovoltaic module, it is only necessary to use the back carrier, and the photovoltaic module does not have to be provided with a frame or the like. In addition, shadowing does not occur due to frame elements or module clips, so that high efficiency can be achieved when converting radiant energy into electrical energy. The 201027775 back carrier is introduced into a hanging rail that is stationary on the secondary structure. The rail is thus adjusted in the form of a back carrier such that at least a portion of the back carrier is positioned in the rail in a positive locking manner. Thus, the rail can be disposed in a vertical orientation to facilitate the introduction of the photovoltaic module and the back carrier into the rail by gravity. In another arrangement, the cross-section of the back carrier can be formed into a hat shape, a V-shape or a U-shape. ^ According to one arrangement, the back side carrier is formed as a tool for overcoming the hardness, wherein at least two bonding faces are disposed on the hat-shaped, V-shaped or U-shaped waist. Thus, each of the bonding faces is formed as a plurality of sections along the back side carrier, and the bonding faces are arranged parallel to each other and spaced apart by a distance. The connector and the bonding surface can be formed from a single piece of workpiece. For example, steel rods or aluminum rods can be used, which can be easily produced in a cost-effective manner. In another arrangement, the adhesive surface of the back carrier is joined to at least one photovoltaic module by an adhesive strip or adhesive layer (preferably a water gel layer). Φ Thus, a stable and continuous connection between the backside carrier and the photovoltaic mode can be provided simply and cost-effectively. In addition, by adhesive bonding, an electrical insulation can be achieved between the back carrier and the photovoltaic module, so that the plurality of photovoltaic modules can be connected by wires. In another arrangement, an isolation layer is additionally disposed between the back side carrier and the sub-structure to isolate the back side carrier and the secondary structure from plating. By using the spacer layer, an electrical insulation can be achieved to prevent corrosion of the contact region, which occurs when the backside carrier and the respective components of the sub-structure use the same metal or metal compound as 201027775. In another arrangement, the material of the backside carrier is selected such that the coefficient of thermal expansion of the material is equal to the coefficient of thermal expansion of at least one photovoltaic module within a predetermined limit. Thus, mechanical stresses that may occur due to temperature switching can be avoided or completely eliminated to extend the life of the photovoltaic device. In another arrangement, the back carrier and the rail are secured by a clamping connector having a pair of retaining members on the back carrier and the rail. Φ According to an arrangement, the photovoltaic module must be aligned to the secondary structure and fixed to the secondary structure in a single step to ensure that the photovoltaic module can be reliably, cost-effectively, easily and quickly installed. In another arrangement, each of the holding elements is disposed on a side opposite to the back carrier and the hanging rail, wherein the first holding component is disposed on the hanging rail and the second holding component is disposed on the back carrier, so that the first and the first The two holding elements can be joined to each other. According to the above arrangement, the photovoltaic module can be aligned to the secondary configuration and fixed to the secondary construction without the need for bolts. Therefore, it is ensured that the photovoltaic module can be installed reliably, cost-effectively, simply and quickly. In another arrangement, the first retaining element of the hanging rail has a protruding element. The photovoltaic module is aligned to the secondary configuration by being mounted on the rail. This fixation in this configuration is achieved by the protruding elements. The protruding element forms part of each holding element. Therefore, a fixing can be provided which prevents the side slip of the photovoltaic module because the photovoltaic module can be fixed by the protruding member after the deviation. 201027775 In another arrangement, the second retaining element of the back carrier forms an opening into which the protruding element of the first retaining element of the hanging rail engages. According to the above arrangement, the photoelectric voltaic module can be fixed on the hanging rail, and the protruding component of the first holding component of the hanging rail is engaged into the opening, thereby ensuring that the photovoltaic module can be reliably and cost-effectively Install easily and quickly. In another arrangement, the first retaining element is disposed on the first end of the rail. Φ Therefore, the photoelectric voltaic module can be hung on the first end of the hanging rail, so that the photovoltaic device can be provided with a plurality of photoelectric voltaic modules. Also, in another arrangement, other retaining members may be provided, preferably including bolted connectors. After the photovoltaic module has been attached to the rail, other holding elements can be installed as additional safety features, which ensure that the photovoltaic module can be installed reliably, cost-effectively, easily and quickly. . In another arrangement, the other retaining elements are disposed on the ends of the rail and back carrier Φ opposite the first end. Mounting the other retaining elements on opposite ends increases the stability of the photovoltaic module. After the photovoltaic module has been attached to the rail, additional fixing can be performed during each work. In another arrangement, the photovoltaic device includes at least a first rib and a second raft that are coupled to the secondary structure and the sling is secured to the raft. In the above arrangement, the rails are formed in a longer manner to bridge the distance between the two beams and also accommodate the back 201027775 carrier as is required for static. In addition, the back carrier can be secured to the rail by bolts or clips. In another arrangement, the first stringer is mounted as a central stringer that is disposed between the other two stringers. In the above arrangement, the rail is formed only with a short connector so that it can be hung below The module can be adjusted to the upper module. Alternatively, the module can be fixed directly on the lower stringer or the upper stringer. Φ In another arrangement, the rail track covers two or more photovoltaic modules. According to this embodiment, a plurality of photovoltaic modules are assembled into a large module by a hanging rail, which can be mounted on the secondary structure. In another arrangement, the hanging rails are disposed in a vertical direction. Therefore, the photoelectric voltaic module is disposed on the hanging rail in the direction of gravity, so that the photovoltaic device can be stationary in a fixed position without additional safety parts during assembly, thereby ensuring reliable photoelectricity module. It is cost-effective, easy and quick to install. ® In another arrangement, the rail is configured in the horizontal direction. Such an arrangement, for example, allows the mounting of the photovoltaic module to be achieved from the side. In another aspect, the above object is achieved by a photovoltaic module having a back carrier that can be mounted in a hanging rail, wherein the back carrier is mounted on the back of the photovoltaic module and includes at least Two adhesive faces spaced apart from each other, the two adhesive faces being provided with a connecting member that can be introduced into the hanging rail. In accordance with the present invention, the photovoltaic module is provided with a back side carrier on the back side, and the back side of the -10-201027775 refers to the side opposite to the main incident direction when radiant energy is converted into electrical energy. The back carrier thus acts as a mechanical reinforcement for the photovoltaic module, which is advantageous in particular in large frameless modules, since pre-stressing on the edges of the module can be prevented. Therefore, in order to mount the photovoltaic module, it is only necessary to use the back carrier without having to provide a frame or the like on the photovoltaic module. In addition, this mounting system does not have shadows, and high efficiency can be achieved when converting radiant energy into electrical energy. Φ In another arrangement, the photovoltaic module is formed as a frameless thin layer-photovoltaic module. The thin layer-photovoltaic module is another cost-effective module for solar modules in terms of converting radiant energy into electrical energy and manufacturing costs. In another aspect, the above object is achieved by a sub-configuration of the photoelectric voltaic device for accommodating one or more photovoltaic modules, wherein the secondary structure has a hanging rail, and the hanging rail is disposed on the secondary structure. And oriented such that the photovoltaic module and a back carrier can be mounted into the hanging rail. Φ According to the invention, the photovoltaic module is provided with a rear carrier on the back side, the back side being the side opposite to the main incident direction when converting radiant energy into electrical energy. The back carrier is introduced into a hanging rail that is stationary on the secondary structure. The rail is thus adjusted in accordance with the form of the back carrier such that at least a portion of the back carrier is positioned in the rail in a positive locking manner. Thus, the rail can be placed in a vertical orientation to facilitate the introduction of the photovoltaic module and the back carrier onto the rail by gravity. In another aspect, the above object is achieved by the method of assembling a photovoltaic device, -11-201027775, which comprises the following steps: - preparing a primary configuration to accommodate one or more photovoltaic modules having a Mounting rails on the substructure; - preparing one or more photovoltaic modules, each having a back carrier 'where the back carrier is mounted on the back side of the photovoltaic module by two adhesive faces' The bonding faces are disposed at a distance from each other and are provided with a connecting member; - the photoelectric voltaic module and the back carrier are mounted in the hanging rail. Φ Therefore, the installation of the photovoltaic module can be easily performed by the hanging rail, and a side slip preventing member can be provided. Another way to fix it can be done in separate work processes. The orientation of the module is performed by mounting the rails. A complete pre-installation of the secondary construction is possible. The photovoltaic module must be engaged during the final operation and may have to be additionally pre-fixed. By appropriately selecting the materials used or using other isolation layers, the photovoltaic modules can be prevented from being isolated from the secondary structure during plating, and corrosion of the contact regions can be prevented. An expandable two-column configuration and a three-column configuration are possible. ® In another arrangement, a guideline is used to install the rail. In order to install the photovoltaic modules as easily as possible, a guideline must be used to install the rails. This criterion is used to determine the orientation of the rails and the distance between the rails in order to accurately mount the photovoltaic modules. . The invention will be described in detail below with reference to the embodiments in the drawings. Further advantageous embodiments of the invention will be explained below on the basis of the embodiments in Figures 1 to 8. Here, elements, regions, and structures having the same function or the same function are provided with the same reference numerals. As long as the elements, regions or structures are functionally relative to -12-201027775, the description is not repeated in every embodiment. [Embodiment] Fig. 1A shows a perspective view of a photovoltaic device 100. The photovoltaic device 100 has a plurality of photovoltaic modules 102, wherein the photoelectrically active side photovoltaic module 102 is shown in Fig. 1A. In order to display the components disposed on the side remote from the light sensitive side to make the secondary structure 104 clearer, only the outline of the two photovoltaic modules 102 is indicated by dashed lines. The φ photovoltaic module 102 can be formed, for example, in a non-frame thin film solar module in the embodiment of Fig. 1A. The frameless thin film solar module is formed, for example, above and below tandem solar cells, wherein a polycrystalline- or microcrystalline PIN-diode is disposed under the amorphous PIN-diode as an active layer, so that Higher efficiencies are achieved overall when converting incident radiant energy into electrical energy. However, the embodiment of the photovoltaic device 100 is particularly suitable for use as a photovoltaic module 102, not only in a frameless thin film solar module. Of course, the photovoltaic/electrical voltaic module 102 can also be a polycrystalline solar module in the following embodiments. As shown in Figure 1A, the photovoltaic device includes a stand 106 that is coupled to the secondary structure 104. The stand 106 is connected to the ground plane, for example by a suitable fixing element, to form an empty surface solar device. However, it is also possible to mount the substructure on a building roof or a flat roof. In addition, Figure 1A shows a rail 108 that is coupled to the sub-structure 104. Each of the photovoltaic modules 102 is provided, for example, with two hanging rails 108, which are arranged in parallel with each other in the vertical direction from each other in the vertical direction - 13 - 201027775. However, each of the photovoltaic cells 102 can also be provided with a different number of rails 1 〇 8, for example, only rails 108 can be provided or more than two rails 1 〇 8 can be provided. The following rails 108 are used to house the photovoltaic modules 102 as in the following embodiments. Here, a back 110 is mounted on the back side of the photovoltaic module 102. A photovoltaic die and the back carrier 110 are secured in the hanging rail 108. The photovoltaic device 1A shown in Fig. 1A is only used to illustrate the configuration of the present invention. Experts in this line understand that different numbers of optoelectronic groups 102 can be used in different sizes and configurations. Therefore, the arrangement formed by the two-column photovoltaic module 102 of the present invention can be any arrangement of up to three columns or columns. The photovoltaic module 102 can have a small size. Therefore, the photovoltaic module 102 can be set to have a size of 5 squares. For example, each of the photovoltaic modules 102 can be provided with two backs 108, which are arranged in parallel in the vertical direction on the secondary structure 104. ® The back carrier 108 can also be placed in the horizontal direction as shown in Figure 1B. In addition, each of the photovoltaic modules 102 can also be provided with a different back carrier 108. For example, a back carrier 108 or a plurality of back carriers 108 can be provided. One or more backside carriers 108 or a plurality of photovoltaic modules may also be used, in which case, for example, four photovoltaic modules are disposed on two backside carriers 108 arranged in parallel, as shown in the first party). Referring now to Figure 2, the photovoltaic module of the hanging rail 108 is shown in detail below. The mounting of the surface carrier group 102 is not limited to the expansion of the surface of any large meter, however, (left The number is in two groups of 102 B (left-hand module-14-201027775 102 and back carrier 110. Figure 2 shows the cross-section of the photovoltaic module, according to Figure 1A The tangent line AB is shown. As shown in Fig. 2, the back carrier 110 has two adhesive faces 112 which are parallel to each other and separated by a distance 11 4. The connecting member 116 connects the two adhesive faces 112 to each other to form a back surface. A single-component workpiece, which is the back carrier 110. As shown in Fig. 2, the cross-section of the back carrier 110 is shown in a hat shape. However, other forms such as a V-shape or a U-shape may be used. The back surface carrier 110 is used to achieve mechanical stability of the photovoltaic module 102. According to an embodiment, the adhesive surface 112 of the back carrier 110 is bonded to the photovoltaic module 102 by an adhesive strip or adhesive layer. Connected. This adhesive connection is used on the one hand to carry the back The carrier 110 is mechanically attached to the photovoltaic module 102. Alternatively, the adhesive layer can be used as an electrically insulating layer to electrically separate the photovoltaic module 102 from the back carrier 110. In another embodiment, a spacer layer made of a non-conductive material may be mounted between the back carrier 110 and the rail 108 or the sub-structure 104 to cause isolation on the plating layer and weaken the corrosion in the contact area. Moreover, as shown in Fig. 2, the back carrier 110 is mounted in the hanging rail 108. Thus, the back peripheral carrier 110 has a form that depends on the hanging rail 108 on the side remote from the photovoltaic module 102. The form is adjusted. Therefore, the back carrier 110 can be additionally formed such that the coefficient of thermal expansion is equal to the thermal expansion coefficient of the photovoltaic module 102 within a preset limit, so that the mechanical load caused by the temperature change is small. Referring to Fig. 3, the following description will be made of how the back carrier is fixed to the hanging rail -15-201027775. The side view of the backing carrier 110 and the perspective of the hanging rail 108 is shown in Fig. 3. An embodiment, the back The fixing of the carrier and the hanging rail 108 is achieved by a clamping connector 120. The hanging rail 108 and the back carrier 110 respectively have a plurality of holding members which are engageable with each other. As shown in Fig. 3, the hanging rail 108 The holding member 124 is formed as a protruding member, which may have, for example, a hook shape as shown in Fig. 3. The corresponding holding member 122 of the back carrier 1 10 is formed as an opening. For example, punching in the back carrier 110 An opening in the form of a slit is cut out or milled. The first holding member 124 of the hanging rail 108 and the second holding member 122 of the back carrier 110 are joined to each other such that the back carrier 110 can have the photovoltaic module 102 thereon. Come securely fixed. Only a pair of holding members 122 and 124 are shown in Fig. 3. However, other retaining elements can also be disposed on the back carrier 110 or on the rails 108, for example, the retaining members can be disposed on the facing sides in the first clamping connector 120. Referring to Figure 4, how the photovoltaic module 102 and the © back carrier 110 are mounted on the secondary structure 104 will be described below. Figure 4 is therefore a cross-sectional view taken along line C-D of Figure 1. The rails 108 are disposed on the secondary structure 104 in the vertical direction (i.e., the direction of the gravitational field). The projecting elements 124 on the rails 108 are aligned upwardly so that the photovoltaic modules 102 and their back carriers 110 are secured in the retaining elements 124 by gravity. Therefore, the photovoltaic module 102 is fixed to the hanging rail 108 without additionally forming a bolt connection. However, it is also possible to fix the photovoltaic module 102 face carrier 110 via an additional bolt connection by holding the component 201027775 124 after forming the clamped connection. The rails 108 are disposed in a horizontal direction on a secondary structure 104 having two beams. The lower rafters 128 and the upper rafters 130 are made, for example, or aluminum stamped parts. The hanging rail 108 completely covers the area between the upper rafters 128. The configuration including the rails 108, the two rafts 130, and the sub-structure 104 is, for example, by bolting. Referring to Figure 5, another embodiment of the photovoltaic device 100 is shown. The embodiment of Fig. 5 differs from the fourth figure in that the sub-header 108 has an intermediate embodiment of 132°, in addition to the upper rafter 130 and the lower girders 128. An area between the upper rafter 130 and the 128 is not completely covered in one of the areas above the intermediate phase. The protruding elements 124 of the rails 108 are additionally joined to the back carrier 110 of the module 102. A plurality of other fasteners 140 are formed on the upper rafters 130 and the ® strips 128 as additional embossments formed by projecting elements or bolted joints. The embodiment shown in Figures 4 and 5 shows a two-column configuration of a blank surface/sun photovoltaic module 102. However, it will be understood that the illustrated embodiment is by way of example only. Therefore, the sympathy of Figures 4 and 5 can also be extended to a three-column or multi-column photovoltaic device. It is also possible to replace the stand 106 with a stand for roof mounting. Referring to Figures 6A through 6G, the Figure 4 or the back, which may be made of steel 130 and strip 128, will be detailed below. Implementation shape: make 104 rafts: strip 132 桁 光电 光电 光电 该 该 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 桁 此外 此外 此外 此外 此外 此外 此外The starting point for the installation of the photovoltaic module is the secondary structure 1〇4' which is fixed to the stand 106. The secondary structure 104 has a lower rib 132 at its lower end and a top raft 130 at its upper end, as shown in Fig. 6A. The stand 106, the secondary structure 104, and the two ribs 128 and 130 can be constructed, for example, by bolted connectors. Then, the mounting of the rails 1 to 8 is performed as shown in Fig. 6B. The rail φ 108 is fixed to the upper rafter 130 and the lower girders 128 in the vertical direction. Advantageously, the hanging rail 108 is mounted using a blank area. Therefore, a plurality of hanging rails 108 can be arranged in a parallel orientation by a predetermined distance to the size of the photovoltaic module. As shown in FIG. 6C, the lower photovoltaic module is installed after the hanging rail 108 is installed. The suspension of 102. The lower photovoltaic module 102 is introduced into the protruding element 124 of the hanging rail 108 by the back carrier 110. As shown in Fig. 6D, only the lower photovoltaic module 102 is hung so that it does not require a bolted connection. In the next step, as shown in FIG. 6E, the upper photovoltaic module 102 is introduced into the protruding member 124 of the hanging rail 108 by the back carrier 110. As a result, a photovoltaic device 110 is obtained in which the two photovoltaic modules 102 are hung in the hanging rails 1〇8. The above process is repeated for a plurality of photovoltaic modules 102, which are adjacently fixed to the respective hanging rails 108. As shown in FIG. 6G, the photovoltaic modules can now be used. Group 1〇2 is fixed on the hanging -18-201027775 rail 108. Such attachment may include, for example, a bolted connection to continuously secure the photovoltaic module 102 in the rails 1〇8. The assembly of the photovoltaic device of Fig. 5 will be described in detail below based on Figs. 7A to 7D. The starting point of the method of the present invention is a secondary construction 104 that includes a lower stringer 128, a central stringer 132, and an upper stringer 130. The secondary configuration additionally has a stand 106 as shown in Figure 7A. φ In the next step, as shown in Fig. 7B, the installation of the hanging rail 108 is performed. The rails 108 are secured in the area above the central ribs 132. The rail 108 has a first retaining element in the region between the central stringer 132 and the lower stringer 128 that forms the protruding element 124. A first retaining element is disposed in the region between the central stringer 132 and the upper stringer 130, which forms the form of a protruding element 124. As shown in Figure 7C, the lower photovoltaic module 102 is hung into the protruding element 124 in the region between the central stringer and the lower stringer. © The completed module is shown in Figure 7D. In the next step, as shown in Fig. 7E, the upper photovoltaic module 102 is now set in the hanging rail 108. As shown in Fig. 7F, the upper photovoltaic module 102 is in turn fixed in position by being bonded to the protruding member 124 in the back carrier 110. Finally, as shown in FIG. 7G, the above two photovoltaic modules 102 are fixed to the lower beam 128 and the upper rib 130. The above-described mounting manner of the photovoltaic device 100 has been described in FIGS. 6A to -19-201027775, 6G, and 7A to 7G, in which the hanging rail 108 is used, and the back carrier 110 of the photovoltaic module 102 is used. Hang into the rails 108. In ^, the form of the rail 108 must match the form of the back carrier 110. The hanging rail 108 is provided with a special protruding element 124 which is hooked into the corresponding opening formed in the back carrier 110 when the photovoltaic module 102 is suspended or set and thus can ensure the photoelectric in a single step The voltaic module can be aligned to the secondary configuration and fixed to the secondary configuration. φ The assembly steps of the photovoltaic device will be described below with reference to Fig. 8 in accordance with a flow chart. In step 810, a secondary configuration 104 is prepared to accommodate one or more photovoltaic modules 102 having a hanging rail 108 disposed in the secondary configuration 104 in a vertical orientation. In step 820, one or more photovoltaic modules 102 each having a back carrier 110 are disposed. The back carrier 110 is mounted on the back surface of the photovoltaic module 102 and includes at least two bonding faces 112 which are parallel to each other. The phase® is disposed at a distance 114 and is provided with a connector 116. The photovoltaic module 102 having the back carrier 110 is assembled into the hanging rail 108 in step 830. Thus, a large area photovoltaic module can be achieved in a simple and cost-effective manner of installation, for example, to form a solar device with a blank surface. The invention is of course not limited to the description made in accordance with the various embodiments. Conversely, the present invention encompasses each novel feature and each combination of features, and in particular, each of the various combinations of the various features of the invention, or the various features of the various embodiments, -20-201027775, when related features or related The combination of the invention itself is not explicitly shown in the scope of each patent application or in the various embodiments. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1A is a perspective view of a photovoltaic module according to an embodiment of the present invention. Fig. 1B is a top plan view of a photovoltaic module according to an embodiment of the present invention. 0 Fig. 2 is a cross-sectional view showing a photovoltaic module according to an embodiment of the present invention. Fig. 3 is a perspective view of a photovoltaic module according to an embodiment of the present invention. Fig. 4 is a cross-sectional view showing a photovoltaic module according to an embodiment of the present invention. Fig. 5 is a cross-sectional view showing a photovoltaic module according to an embodiment of the present invention. ® Figs. 6A to 6G are cross-sectional views showing the mounting of a photovoltaic module of a photovoltaic device according to an embodiment of the present invention. Fig. 7A to Fig. 7G are cross-sectional views showing the mounting of the photovoltaic module of the photovoltaic device according to an embodiment of the present invention. Fig. 8 is a flow chart showing a method of mounting a photovoltaic module according to an embodiment of the present invention. [Main component symbol description] 100 Photovoltaic device-21 - 201027775 102 Photovoltaic module 104 times structure 106 frame 108 rail 110 rear carrier 112 bonding surface 114 distance 116 connector 120 clamping connector 122 second holding component 124 First holding element 128 Lower purlin 130 Upper purlin 132 Central purlin Ο -22-