TW201139021A - Soldering device and soldering method - Google Patents

Soldering device and soldering method Download PDF

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Publication number
TW201139021A
TW201139021A TW099135828A TW99135828A TW201139021A TW 201139021 A TW201139021 A TW 201139021A TW 099135828 A TW099135828 A TW 099135828A TW 99135828 A TW99135828 A TW 99135828A TW 201139021 A TW201139021 A TW 201139021A
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TW
Taiwan
Prior art keywords
strip
bonding wire
shaped bonding
solar cell
unit
Prior art date
Application number
TW099135828A
Other languages
Chinese (zh)
Inventor
Akihiko Ishikawa
Manabu Katayama
Masato Kasahara
Kazushige Ishihara
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Nisshinbo Mechatronics Inc
Nisshinbo Alps Tech Co Ltd
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Application filed by Nisshinbo Mechatronics Inc, Nisshinbo Alps Tech Co Ltd filed Critical Nisshinbo Mechatronics Inc
Publication of TW201139021A publication Critical patent/TW201139021A/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H01L31/1876—Particular processes or apparatus for batch treatment of the devices
    • H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0016—Brazing of electronic components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/008—Soldering within a furnace
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/04—Heating appliances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B23K2101/38—Conductors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention provides a soldering device and a soldering method for soldering a solar cell with a TAB lead in a short time without causing damage to the solar cell. The soldering device (100) of the invention is used for soldering a solar cell (10) and a TAB lead (15). The soldering device (100) includes a preheating part (60) and a soldering part (70). The preheating part (60) heats the solar cell (10) and the TAB lead (15) to a temperature lower than the soldering melting point under the situation that the solar cell (10) and the TAB lead (15) are overlapped. The soldering part (70) heats the overlapped portions of the solar cell (10) and the TAB lead (15) to a temperature higher than the soldering melting point.

Description

201139021 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種焊接太陽電池及帶狀接合導線的 焊接裝置及焊接方法。 【先前技術】 太陽電池模組的構成係一面具有呈列狀配置的複數 太陽電池單元，而其中相鄰的太陽電池彼此電性連接。 一直以來，將太陽電池單元彼此電性連接的情況，係 藉由焊接裝置及採用帶狀接合導線（TAB lead, tape automatic bonding lead )，將相鄰的太陽電池單元中之一個 太陽電池單元的表側連續電極與其相鄰的另一個太陽電 池單元的裏側連續電極焊接而進行。 習知的焊接裝置具有載入部及焊接部，載入部將太陽 電池單元及帶狀接合導線依序配置，焊接部將太陽電池單 元與帶狀接合導線焊接。載入部在一定間隔進行搬送的輸 送帶上以每一間隔時間一邊將帶狀接合導線及太陽電池 單元依序配置為列狀，一邊搬送至焊接部。焊接部在進行 下一個搬送前的短時間内，利用熱風加熱器等加熱太陽電 池單元與帶狀接合導線接觸的部分至焊接熔點以上的溫 度，再藉由押壓將太陽電池單元與帶狀接合導線焊接。 然而，如上所述之焊接裝置的情況下，係使得太陽電 池單元與帶狀接合導線接觸的部分在短時間内從約略室 溫的狀態上升至焊接熔點以上的溫度，因此，太陽電池單 201139021 元容：產生龜裂。為了不讓太陽電池單元產生龜裂，考量 了將溫度上升的速度變慢，但太陽電池單 ，的周期時間-變長，將難《提升生產效率。！:因導 降 -度急速上升太陽電池單元產生龜裂，導致生產良率下 方面例如，專利文獻1揭露了用於太陽電池的 f犬接合導社焊歸置，其設有料_手段的平板加 熱器。藉由設置此平板加熱器以作為職手段，可防止因 急速加熱而導致太陽電池單元的龜裂。 又:例如，專利文獻2揭露了太陽電池模組的製造裝 置，其係在圍板内設有加熱塊。設置此種加熱塊以防止因 急速加熱而導致太陽電池單元的龜裂具 果，生產效率亦可提升至某些程度。 又太 [習知技術文獻] [專利文獻1]特開2006-147887號公報 [專利文獻2]特開2005-191259號公報 然而’例如，專利文獻1所揭露的焊接裝置並沒有充 份的預熱’而係在鄰近焊接部的地方，使得太陽電池單元 整體及帶狀接合導線加熱至焊接炫點以上的溫度，因此不 可此提升生產效率。又，即使欲提高生產效率而使得溫度 急速上升，太陽電池單元也會有產生龜裂等問題。 又’例如’藉由在專利文獻2等所揭露的太陽電池模 組之製造裝置’將太陽電池單元與帶狀接合導線烊接的情 況下’由於將太陽電池單元整體從預熱階段到焊接階段加 201139021 熱至比焊接溶點還高的溫度，會對太陽電池單元帶來損 壞，因情況還可能產生龜裂等問題，且具有無法充份提升 生產效率之問題。 在此’參照圖14 ’說明在專利文獻2等所揭露的太陽 電池模組之製造裝置進行焊接的情況下，太陽電池單元整 體及帶狀接合導線的溫度變化。圖14係顯示太陽電池單 元整體及帶狀接合導線之溫度變化的圖表，橫軸為顯示專 利文獻2所揭露的太陽電池模組之製造裝置中，太陽電池 早元及帶狀接合導線被搬送的位置，縱轴為顯示太陽電池 單元及帶狀接合導線的溫度。圖14的圖表上方係對應橫 軸及被搬送的太陽電池單元及帶狀接合導線的位置，顯示 專利文獻2揭露的太陽電池模組的製造裝置200的一部 分。圖14所示的太陽電池模組之製造裝置200在圍板201 内設有加熱塊202及冷卻塊203。太陽電池模組之製造裝 置200將太陽電池單元及帶狀接合導線在圍板201内於箭 頭D方向搬送。 當太陽電池模組之製造裝置200在圍板201内搬送太 陽電池單元及帶狀接合導線時，如圖14的圖表所不，藉 由加熱塊202，太陽電池單元整體及帶狀接合導線急速升 溫。太陽電池模組之製造裝置200係藉由加熱塊202使得 太陽電池單元整體及帶狀接合導線的溫度加熱至比焊接 熔點（1801 )還高的溫度。接著’太陽電池單元整體及 帶狀接合導線持續被加熱至比焊接炫點還高的溫度’以焊 接太陽電池單元與帶狀接合導線。之後’在冷卻階段藉由 201139021 冷卻塊203冷卻太陽電池單元及帶狀接合導線。 習知太陽電池模組之製造裝置200等係在預熱階段至 焊接階段，將太陽電池單元整體及帶狀接合導線持續加熱 至比焊接熔點還高的溫度。即，在預熱階段至焊接階段係 連續的移動，因此，無法控制加熱至比焊接熔點還高之溫 度的時間。因此，太陽電池單元整體經過長時間的高溫加 熱，使得太陽電池單元產生龜裂等損壞。又，近年來所採 用的焊接熔點係使用熔點高的無鉛焊膏，更使得太陽電池 單元有損壞之虞。 【發明内容】 本發明有鑑於上述問題，目的為提供一種焊接太陽電 池單元及帶狀接合導線的焊接裝置及焊接方法，使單位時 間的產出大幅地提升之同時，太陽電池單元不會發生龜裂 等損壞。 為了達成上述目的，依據本發明之一種焊接裝置，為 焊接太陽電池單元及帶狀接合導線的焊接裝置，其包括在 該太陽電池單元與該帶狀接合導線重合的狀態下，將該太 陽電池單元及該帶狀接合導線加熱至焊接熔點以下之溫 度的預熱部及；以及將該太陽電池單元與該帶狀接合導線 的重合部分加熱至比焊接熔點還高之溫度的焊接部。 又，該焊接部包括沿著該帶狀接合導線的長邊方向而 配置的加熱體，該加熱體藉由接近或接觸該太陽電池單元 與該帶狀接合導線的重合部分，將該太陽電池單元與該帶 201139021 狀接合導線的重合部分加熱至比焊接熔點還高的溫度。在 此情況下，可將預先加熱的太陽電池單元及帶狀接合導線 的重合部分局部加熱，且可將太陽電池單元及帶狀接合導 線的重合部分在短時間内加熱至比焊接熔點還高的溫度。 又，該加熱體之構成可具有複數押壓子，其相對該太 陽電池單元押壓該帶狀接合導線。在此情況下，各押壓子 可確實地將帶狀接合導線押壓於太陽電池單元。 又，焊接裝置之構成更包括將該太陽電池單元及該帶 狀接合導線搬送至k預熱部及該焊接部的搬送部，該搬送 部將被搬送中的該太陽電池單元吸附於搬送帶，藉由將該 帶狀接合導線夾在該太陽電池單元與該搬送帶之間，使該 太陽電池單元及該帶狀接合導線可在定位狀態下被搬 送。在此情況下，可使夾在該太陽電池單元與該搬送帶之 間的帶狀接合導線相對太陽電池單元不會偏移，而係在定 位狀態下被搬送。 又，該搬送部之構成可藉由位於被搬送中的該帶狀接 合導線之兩側的該搬送帶的單元吸附孔，吸附該太陽電池 單元，俾使該太陽電池單元吸附於該搬送帶。在此情況 下，可使夾在該太陽電池單元與該搬送帶之間的帶狀接合 導線相對太陽電池單元不會偏移，而係在定位狀態下被搬 达。 又，該搬送部之構成可藉由將該搬送帶所載置的該帶 狀接合導線吸附於該搬送帶，使該帶狀接合導線相對該搬 送帶定位。在此情況下，將太陽電池單元載置於帶狀接合 201139021 導線上’且將帶狀接合導線載置於搬送帶上時，帶狀接合 導線不會偏移而可正確地定位。 又’該搬送部之構成可藉由位於該搬送帶所載置的該 帶狀接合導線之下側的該搬送帶的帶狀接合導線吸附 孔’吸附該帶狀接合導線，俾使該帶狀接合導線吸附於該 搬送帶。在此情況下’將太陽電池單元載置於帶狀接合導 線上’且將帶狀接合導線載置於搬送帶上時，可使帶狀接 合導線不會偏移而正確地定位。 又’該搬送部之構成可在該帶狀接合導線的焊煬開始 熔化前’吸附被搬送中的該帶狀接合導線。在此情況下， 在搬送太陽電池單元及帶狀接合導線中，可確實防止帶狀 接合導線的位置偏移。 又’焊接裝置之構成更包括供給該帶狀接合導線的帶 狀接合導線供給部’該帶狀接合導線供給部可將帶狀接合 導線彎曲成形，俾使該帶狀接合導線連接於該太陽電池單 元的表側連續電極的一側與該帶狀接合導線連接於該太 陽電池單元的裏側連續電極的一側之間具有段差。在此情 況下，帶狀接合導線不會浮離於太陽電池單元上，而可使 帶狀接合導線與太陽電池單元上面接觸。 又’該帶狀接合導線供給部之構成可將該帶狀接合導 線傾斜成形，俾使該帶狀接合導線連接於該太陽電池單元 的表侧連續電極之一側，隨著朝向該帶狀接合導線的前 端，該帶狀接合導線的該前端與該表側連續電極接觸。在 此情況下’藉由帶狀接合導線的彈力，帶狀接合導線押壓 10 201139021 太陽電池單元，因此，帶狀接合導線與太陽電池單元不會 偏移，而可維持定位狀態。 又，焊接裝置之構成更包括暫時固定裝置，其係在藉 由該烊接部將該太陽電池單元及該帶狀接合導線的重合 部分加熱至比焊接熔點還高的溫度之前，可將該帶狀接合 導線及該太陽電池單元於重合狀態暫時固定。在此情況 下，帶狀接合導線相對太陽電池單元不會偏位，而可在定 位狀態下被搬送。 又，該暫時固定裝置之構成係可藉由將重合於該太陽 電池單元的表側連續電極上的該帶狀接合導線加熱而暫 時固定。在此情況下，更可確實地防止帶狀接合導線相對 太陽電池單元的偏移。 又，焊接裝置之構成更包括冷卻部，其係可從該帶狀 ?合導ί的長邊方向之其中一側將藉由該焊接部使該太 知電池單元及該帶狀接合導線的重合部分炫化的焊踢冷 部在此情況下，可使烊接後的太陽電池單元的彎曲消除。 *本發明之焊接方法料接太陽f池單元及帶狀接合 ^的焊接方法，其包括在該太陽電池單元與該帶狀接合 :重合的狀態下’將該太陽電池單元及該帶狀接合導線 口:至桿接炫點以下之溫度的預.程；以及將該太陽電 還狀接合導線的重合部分加熱至比谭接炫點 還阿之溫度的焊接工程。 線，m月，能夠焊接太陽電池單元及帶狀接合導 線而使早位時間的產出大幅地提升之同時，太陽電池單 201139021 元不會發生龜裂等損壞。 【實施方式】 以下將參照相關圖式’說明依本實施態樣的一種焊接 裝置100。又，圖示中，因應所需而以箭頭記號Fr表示焊 接裝置100的前側（被焊接的太陽電池單元及帶狀接合導 線的排出側）’以箭頭記號以表示後側（太陽電池單元及 帶狀接合導線的供給側）。 在此’首先’參照圖1A、圖1B及圖1C，說明以焊 接裝置100焊接的太陽電池單元1〇及帶狀接合導線15。 圖1A係從表側連續電極側（以下稱之表側）觀看以 帶狀接合導線15配置為列狀的複數太陽電池單元1〇之狀 恶的平面圖。圖1B係從側邊觀看以帶狀接合導線15配置 為列狀的複數太陽電池單元10之狀態的側面圖。圖1〇為 顯不太陽電池單元10之構成的圖。圖lc(a)係從表側觀 看太陽電池單元10的平面圖。圖lc(b)係從裏側連續電極 側（以下稱之褢側）觀看太陽電池單元10的平面圖。 太陽電池單元10形成於厚度約016mm、矩形的平板 形狀。如目lC(a)所示，在本實施態樣中的太陽電池單元 1〇的表側設有二個表侧連續電極n ’表側連續電極u從 太陽電池單元10的一邊跨過對向的一邊。又，太陽電、、也 單元H)的表側設有複數指狀（finger)部13，其係從太陽 電池單元K)的-邊跨過對向的—邊與侧連射極u垂 直相交。又’如圖ic(b)所示’太陽電池單元10的裏側設 201139021 有與表側連續f極11相同的二個裏側連續電極Η，其從 太陽電池單A 1G -邊跨過對向的—邊。為了盘帶狀接人 導線15焊接，表騎續電極n及^續電極Η的: 面塗有焊埸。 /另一方面，如圖1A及圖1B戶斤示，帶狀連接導㈣ 形成於厚度約G.2mm且片狀、平板形狀的導線。帶狀連接 導線15以銅形成，為了與表側連續電極u及裏側連續電 極12焊接，表面塗有焊踢。 如圖1A及圖1B所示，焊接係在複數太 10以帶狀連接導、線15配置為歹懷的狀態下進行。具體地， 係將太陽電池單元1〇以指定間隔隔開配置，且將帶狀連 接導線的中間至一邊（前側）重合配置於太陽電池單 元10的表側連續電極u，帶狀連接導線15的中間至另一 邊（後側）ΐ合配置於相鄰的太陽電池單A 10的裏側連 續電極12。在此’二個帶狀連接導線15的中心之間的距 離為W (參照圖1 a )。 依此，焊接裝置100將列狀配置的太陽電池單元1〇 與帶狀接合導、線15重合的重合部分加熱，使塗佈在各連 續電極及帶狀連接導線15的焊_化，進而使太陽電池 單元10及帶狀接合導線15電性連接。 接著，參照圖2，概略地說明本實施態樣的嬋接裝置 100。圖2為顯示焊接裝置100之概略構成的圖。 本實施態樣的焊接裝置1〇〇係由進行相關焊接處理的 複數構成元件所構成。具體地，焊接裝置1〇〇之構成包括 201139021 太陽電池單元供給部20、帶狀接合導線供給部3〇、搬送 部50、預熱部60、焊接部70及冷卻部80。 在此，簡單地說明各構成元件。首先，太陽電池單元 供給部20將太陽電池單元10供給至搬送部50。帶狀接合 ，線供給部3G係將帶狀接合導線15 f曲成形，且切割為 指定，度後供給至搬送部％。此時，太陽電池單元供給部 2〇帶狀連接導線供給部3G及搬送部5G交互動作，以將 太陽電池單元10及帶狀連接導線15如圖1A及圖1B所 示，列狀配置於搬送部50的搬送帶51上。 搬送邛50在太陽電池單元10及帶狀連接導線15定 ^立的狀‘4下’將其搬送至焊接部7G及冷卻部⑼。在預熱 、β。-中鐵度控制裝置61 一邊將加熱爐62内的太陽電 池:几10控制在燁接炫點以下的溫度，一邊加熱太陽電 印:_ !體及π狀連接導線15。焊接部將太陽電池 早疋1〇之連續電極與帶狀連接導線15的重合部分局部地 二熱且相對太陽電池單元1〇押壓帶狀連接導線Μ，焊 =電池單元1G及帶狀連接導線15。冷卻部⑽將太陽 /mo及帶狀連接導線15冷卻，進而使太陽電池單 疋1〇與帶狀連接導線15的重合部分固化。 :據本實施態樣的焊接裳置1〇〇 ’能夠使得上述各構 t件單㈣互㈣作，㈣效率地騎 及帶狀連接導線15的悝姑 平 的1以下將詳細說明各構成元件 /、篮構成及動作處理。 (太陽電池單元供給部20) 14 201139021 太陽電池單元供給部20進行的工程係將太陽電池單 元10供給至搬送部50。 如圖2所示，太陽電池單元供給部20具有單元載入 裝置（cell loading device ) 21。單元載入裝置21可將未焊 接且重合容置於存放台（Stocker) 22的太陽電池單元10， 從存放台22至搬送部50往返移動。具體地，單元載入裝 置21每從存放台22吸附一個太陽電池單元10後，載置 於搬送部50的搬送帶51上的指定位置。又，將太陽電池 單元10供給至搬送部50的途中，具有圖未顯示的攝影裝 置檢查太陽電池是否產生龜裂，且可具有圖未顯示的焊劑 供給裝置，以將焊劑塗佈於太陽電池單元10的表側連續 電極11及裏側連續電極12。 (帶狀接合導線供給部30) 帶狀接合導線供給部30進行的工程係將指定長度的 帶狀接合導線15彎曲成形，再供給至搬送部50。 如圖2所示，帶狀接合導線供給部30將指定長度的 帶狀接合導線彎曲成形，且具有將彎曲成形的帶狀接合導 線15載置至搬送帶51上的帶狀接合導線載入（loading) 裝置。在此，參照圖3至圖5，說明帶狀接合導線載入裝 置33。圖3為顯示帶狀接合導線載入裝置33之構成的斜 視圖。圖4係從圖3所示的箭頭A方向觀看帶狀接合導線 載入裝置33的圖。圖5A係從圖3所示的箭頭B方向觀看 帶狀接合導線載入裝置.33的圖。 如圖3所示，帶狀接合導線載入裝置33係位於搬送 15 201139021 部50的側邊而配置，且由上型37及下型42等構成。 上型37係用以將帶狀接合導線15彎曲成形的金屬模 具其中之一，且藉由圖未顯示的上型驅動裝置，可移動於 垂直方向及水平方向。 ' 如圖4及圖5A所示，上型37的下面具有二個突條部 38，其分別沿著搬送帶51的搬送方向平行形成。各突條 部38的下面具有用以押壓帶狀接合導線15的成形部 其朝向下方、分別突出。形成於各突條部38的成形心9，’ 其寬度大小與帶狀接合導線15的寬度略為一致。又，相 鄰的成形部39之間的距離與圖1At說明的二個帶狀接』 導線15的令心之間的距離w相同（參照圖从等）。又。 如圖4所示，各成形部39的長邊方向略中間形成有段部 4〇。各成形部39以段部40為界’其後側比前側稍微往下 突出。此段部40的段差約略為太陽電池單元_厚度。 又’如圖4所示’上型37的各突條部38形成複^於 ，邊方向間隔的吸附孔41。各吸附孔41在突條㈣内沿 者垂直方向形成’下側則開口於成形部％的下面^ 顯示的帶狀接合導線吸附裝置藉由各吸附孔4 : ^合導線，藉此，可使得帶狀接合導線15吸附於:型 38 5 37 暫時固向間隔的加熱子48，以作為 的前端部及後端部二處。又，加熱子 201139021 少其前端被加熱至谭接熔點以上。加熱子48的加熱可採 用電阻^熱方式等。由於各加熱子48係容置於成形部％ 内的狀恶’如圖4的二點鏈線所示，可構成從成形部 的下方面突出於下方圖未顯示的升降機構。如箱後所述， 將帶狀接合導線15的前側載置於太陽電池單元】()上時， 各加熱子48係從成形部39的下方面突出於下方，藉此， 可將帶狀接合導線15的指定位置加熱，進而使帶狀接入 導線的焊踢一部分炫化。利用將帶狀接合導線15的焊 踢-部分純，使得帶狀接合導線與太陽電池單元的 分^接而暫日㈣定。又’在本實施㈣中，係針對加熱子 没置於突條部38前側的前端部及後端部二處的情況 -兒明，但非限於此情況，亦可設置在二處以上。 另一方面，下型42係用以將帶狀接合 y ......*Τ η入饮3-守 '咏1 ：)彎曲 形的金屬模具之另一，且藉由圖未顯示的下型驅動裝 可移動於垂直方向。下刑ΑΑ Π下型42的上面具有二個突條部43， 〃、分別沿著搬送帶51的搬送方向平行形成。 如圖4及圖5Α所示’各突條部43的上面分 用以押壓帶狀接合導線15的凹溝部44。形成於 43_的凹溝部44 ’其寬度大小與帶狀接合導線15的寬= 為-致。X，相鄰的凹溝部44之間的距離與圖二 的二個帶狀接合導線15的中心之間的距離w :明 =5A等）。又，如圖4所示，下型42的各突條部们的凹、 溝部44内分別形成有段部45。此段部衫位於上型凹 各形成部39上所形成的段部4〇的垂直下方。即，下型$ 17 201139021 的段部45的位置’係在押壓的時候使得上型37的段部4〇 與下型42的段部45從上下夾住位於上型37與下型“之 間的帶狀接合導線15 ’㈣成段差於稍後制及圖从所 示的帶狀接合導線15a之中央的位置。又，下型42的凹溝 部44以各段部45為界’其後側的溝深稍㈣於前侧的溝 深。此段部45的段差約略為太陽電池單元1〇的厚度。 接著，參照圖4及圖5A，說明帶狀接合導線載入裝置 33將帶狀接合導線15彎曲成形的動作。又，在此，如圖 2所示，係將-個捲盤32所供給的帶狀接合⑽i5 f曲 成形之情況說明，而將其他相鄰的捲盤32供給的帶狀接 合導線15彎曲成形之情況也是同樣、同時進行的。 首先，如圖4所示，帶狀接合導線保持器（eg)乃 將帶狀接合導線15從捲盤32拉出，保持於水平狀態。 接著，下型驅動裝置使得下型42上升，再將帶狀接 合導線15嵌合於下型42的凹溝部44内而^位（亦參照 圖5A中以二點鏈線表示的下型）。 接著’帶狀接合導線切割器（cutter) 36切割帶狀接 合導線15。又，帶狀接合導線保持器％解除保持帶狀接 合導線15，退避至後方。接著，上型驅動裝置使得上型 37下降，將嵌合於下型42#帶狀接合導線15押壓（亦參 照圖5A中以二點鏈線表示的上型）。 藉由上述之動作，從捲盤32被拉出指定長度的帶狀 接合導線15係藉由上型37的成形部39所形成的段部仙 與中央侧的下型42的凹溝部44所形成的段部45,中央被 201139021 彎曲成形。又，成形的帶狀接合導線15係被押壓在上型 37與下型42之間，藉此，比起捲曲在捲盤32的形狀更可 直接地改善。 接著，參照圖5A及圖5B，說明帶狀接合導線載入裝 置33將被切割的帶狀接合導線載置至搬送帶51的動作。 圖5B係從圖3所示的箭頭c方向觀看搬送帶51的圖。 上型37押壓帶狀接合導線15後，帶狀接合導線載入 裝置33的上型37藉由吸附孔41吸附帶狀接合導線15。 上型驅動裝置及下型驅動裝置分別使得上型及下型 脫模。因此，帶狀接合導線15變成僅吸附在上型37的狀 態。 接著，如圖5B所示，上型驅動裝置將吸附著帶狀接 合導線15的上型37水平方向地移動至搬送部5〇的搬送 帶51的上方。更進一步，如圖5B的二點鏈線所示，上型 動裝置使得上型37下降’之後’上型37解除吸附帶狀 接合導線15。因此，如圖5B的二點鏈線所示，二個帶狀 接合導線15載置於搬送帶51的搬送面52的指定位置。 在此，二個帶狀接合導線15之間的距離與圖1A中說明的 一個▼狀接合導線15的中心之間的距離W相同。 依此’利用帶狀接合導線載入裝置33的動作，帶狀 =合導線供給部30將帶狀接合導線15切割為指定長度且 •’考曲成形，可將成形的帶狀接合導線15供給至搬送部5〇。 又，上型37將帶狀接合導線15載置至搬送帶51的指定 位置時，帶狀接合導線保持器35嵌夾帶狀接合導線15的 19 201139021 切斷部分’再從水平方向拉開，保持於水平，準備將下— 個帶狀接合導線15彎曲成形。 =此，上述太陽電池單元供給部2〇的單元載入裝置 〃 ^狀接5導線供給部3Q的帶狀接合導線載人裝置幻 係分別依序將太陽電池單元1〇及帶狀接合導線Η載置於 搬送部50。的搬送帶51上，如圖1A及圖ib所示，將複數 太陽電池單元10以帶狀接合導線15列狀配置。 又，上述帶狀接合導線供給部3〇將帶狀接合導線15 切割、¥曲成形，且將成形的帶狀接合導線15載置於搬 曰送帶51的動作係以一台帶狀接合導線載入裝m進行說 7 ^亦可將帶狀接合導線15 f曲成形的裝置以及將成 形的▼狀接合導線15載置於搬送帶51的裝置分開構成。 e在此，參照圖6A及圖6B，說明藉由上型37及下型 曲成形的帶狀接合導線15的形狀。圖6A係藉由本實 轭心樣的帶狀接合導線載入裝置33而成形的帶狀接合導 線15a的側面圖。圖6A以二點鏈線表示太陽電池單元⑺。 帶狀，合導線15a在中央彎曲成形，使得前側變高為太陽 電^單元10的厚度。因此，將帶狀接合導線15a載置於搬 ，。卩50的搬送帶51時，即使載置於已被載置的太陽電池 °°元上 ▼狀接合導線15a也不會浮離於太陽電池單元 1〇而係帶狀接合導線15a與太陽電池單元1〇可廣大地面 接觸。 、 又’圖6B係帶狀接合導線15b另一態樣的側面圖。 (¾] iv *- —點鍵線表示太陽電池單元1〇。帶狀接合導線15b 20 201139021 在中央f曲成形’使得前側變高為太陽電池單元10的厚 度。又，帶狀接合導、線15b係隨著朝向前側的前端，前側 漸漸往下側傾斜成形1，帶狀接合導線載入裝置33的 上型37及下型42亦可將帶狀接合導、線15b成形為如圖6B 所不，上型37的成形部39及下型42的凹溝部44分別隨 ^朝向前側的前端，前側往下側傾斜成形即可。因此，將 帶狀接合導線l5b載置於搬送部5〇的搬送帶51時，即使 載置於已被載置的太陽電池單元上，帶狀接合導線⑽也 =會洋離於太陽電池單元1G，而係帶狀接合導線⑽及太 陽電池單it 1G可廣大地面接觸。更進—步，由於隨著朝 向别側，刖側往下側傾斜，帶狀接合導線15b的前側因帶 狀接合導線15b的彈力產生作用，壓附在太陽電池單元1〇 上。因此，使得帶狀接合導線15b與太陽電池單元1〇更 進一步接觸，可防止兩者之間的偏移。 如圖7所不，最初載置的帶狀接合導線15不進行如 上述的彎曲成形。帶狀接合導線15在一開始的情況下， 利用f狀接合導線載入裝置33設有不進行彎曲成形、分 開設置的上型及下型等的手段，可吸附中央不形成段差的 f狀接合導線15而進行供給。 又’雖然帶狀接合導線載入裝置33對最後載置於搬 送帶51的帶狀接合導線15進行彎曲成形，但比起最初的 帶狀接合導線15或中間的帶狀接合導線15，係較短的規 格。具體地，係如圖6C所示的帶狀接合導線i5c，其後侧 的長度較短。 201139021 (搬送部50) 搬送部50進行的工程係在太陽電池單元⑺及帶狀接 ^導線15配置於列狀的狀態下m，—邊間歇地搬 送至預熱部、焊接部70及冷卻部80。 如圖2所不，搬送部50具有搬送帶5卜搬送滾輪55a、 55b及吸附裝置56 #。搬送帶51與搬送滾輪55a及接近 於^卻部80之位置所配置的搬送滾輪55b -起捲動。搬 送▼ 5】係薄且王平板狀的皮帶，為了提高熱傳導性以金 屬製成。又’藉由驅動圖未顯示的滚輪驅動裝置，各搬送 滾輪55a、55b轉動於箭頭方向，滾輪驅動裝置係連接於搬 送滾輪55a 55b之轉動軸。藉由各搬送滾輪55a、说的 轉動，載置於搬送帶51之搬送面52的太陽電池單元及帶 狀接合導線（以下統—稱之㈣送物），依預熱部、焊 接部70及冷卻部80的順序被搬送。 又，吸附裝置56係遍及搬送帶刃的長邊方向，配置 於搬送帶51之搬送面52的下側。吸附褒置…吏得搬送 面52所載置的太陽電池單元1()及帶狀接合導線15吸附 於搬送帶51 ’而可進行定位。有關由吸附裝置56吸附太 陽電池單元H)及帶狀接合導線15的動作將於稍後說明。 又，如圖3所不’於搬送帶51形成有複數帶狀接合 導線吸附孔53,其遍及搬送帶51的圓周方向而連續形成。 在本實施態樣的搬送帶51係在搬送帶51的寬度方向上的 左右兩側’形成有二列的帶狀接合導線吸附孔53。帶狀接 合導線吸附孔53的位置係根據帶狀接合導線載人裝置％ 22 201139021 而形成於與各帶狀接人 置（亦參照圖5B)。：、’友載置於搬送帶51 一致的位 距離與圖1〇說_ ’f帶狀接合導線吸附孔53的列間 距離w相同n固帶狀接合導線15的中心之間的 合導線吸附孔53 ^圖3所示，於搬送帶51的各帶狀接 - ^ ςι λα 、側形成有複數單元吸附孔54，其遍 及搬运：51的圓周方向而連續形成。 置56^Λ ^813及圖7至圖9’說明有關藉由吸附裝 i吸附太陽電池單元1Q及帶狀接合導線15，搬送 :邊搬送太陽電池單元1()及帶狀接合導線Μ的動 *此’圖7⑷為顯示帶狀接合導線载入裝置％將最初 7〇Ir大接合導線I5载置於搬送帶51之狀態的斜視圖。圖 =將圖7⑷所不的η線於垂直方向切割而從箭頭方向 2看的剖面圖。又’圖8⑷為顯示單元載入襄置21將太陽 池早兀10一載置於搬送帶51之狀態的斜視圖。圖賴 沾圖8⑷所不的Π_η線於垂直方向切割而從箭頭方向觀看 的剖面圖。圖9⑷係帶狀接合導線載入褒置％將下一個 (或係最後的）帶狀接合導線15載置於搬送帶51之狀態 的斜視圖。圖9(b)係將圖9(a)所示的m-ln線（包括加熱 爐62 _太陽電池單元及帶狀接合導線的剖面）於垂直 方向切割而從箭頭方向觀看的剖面圖。又，圖7(a)、圖8(心 及圖9(a)顯示稍後說明的加熱爐62的入口 64。 首先，如圖7(a)所示，帶狀接合導線載入裝置％將未 彎曲成形、最初的帶狀接合導線15分別平行地載置於搬 送面52的指定位置，即，分別沿著連續的帶狀接合導線 23 201139021 吸附孔53而平行地載置。接著，吸附装置％藉由各帶狀 接合導線吸附孔53將載置於搬送面52的各帶狀接合導線 15吸引。具體地’如圖7(b)所示’吸附裝置％藉由位於 搬送帶的各帶狀接合導線吸附孔53之下側的各帶狀接 合導線吸引孔5 7產生吸阳* ? ll y4= 玍及附精此，使得各帶狀接合導線 15吸附於搬送帶51。因此，各帶狀接合導線！5定位在搬 送帶51的指定位置。 ㈣，如圖8所示，單元載入裝置21將最初的太陽 電池早兀1G載置於搬送面52的指定位置。具體地，單元 載入裝置21將太陽電池單元W載置的位置係使得已載置 的各帶狀接合導線15的後側與太陽電池單元ig的各裏側 連續電極12 -致的位置。太陽電池單元1()載置於帶狀接 合導線15上時，與帶狀接合導線15接觸，帶狀接合導線 15有偏移之虞。然而，由於各帶狀接合導線。藉由吸附 裝置56相對搬送帶^位’因此，即使與太陽電池單元 10接觸也不會移動，可維持在指定位置。 接著’吸附裝置56藉由各單元吸附孔54吸附搬送面 52上所載㈣太陽電池單a 1()，更詳㈣是各帶狀接合 導線15上所載置的太陽電池單元1〇。具體地，如圖8⑻ 所不，吸附裝置56藉由位於搬送帶51的單元吸附孔 之下側的單元吸引& 58產生吸附，藉此，使得太陽電、、也 單元10吸附於搬送帶51。因此，太陽電池單元1〇定位在 搬送帶5Ϊ的指定位置，也就是使得帶狀接合導線15应太 陽電池單10的裏側連續電極12 一致的位置。此時，：陽 24 201139021 電池單元ίο與各帶狀接合導線15接觸的近處一邊稍微彎 曲—邊吸附，因此，各帶狀接合導線15夾在太陽電池^ 兀10及搬送帶51的狀態。因此，太陽電池單元1〇及各 帶狀接合導線15不會產生偏移而可維持定位的狀態。又， 圖8(b)係強調太陽電池單元1〇藉由吸附孔54而彎曲、固 定於帶狀接合導線15之鄰近處的狀態。 接著，藉由搬送滾輪55a、55b及搬送帶51，間歇搬 迗太陽電池單元10及帶狀接合導線15。具體地，滾輪驅 動裝置使得搬送帶51移動相當於約略一個太陽電池單元 ⑺的長度。此時，由於吸附裝置56持續吸附太陽電池單 元1〇,因此，太陽電池單元10及帶狀接合導線15不會因 搬送時的振動等而產生偏移。 接著，如圖9(a)所示，帶狀接合導線載入裝置幻將下 一個彎曲成形的帶狀接合導線15載置於搬送面52的指定 位置。具體地，係載置為使得各帶狀接合導線15的前側 與太陽電池單元10的各表側連續電極u 一致的位置，且 將各帶狀接合導線15的後側沿著連續的帶狀接合導線吸 附孔53各自平行地載置。接著，吸附農f56藉由帶狀接 合導線吸附孔53將重新載置於搬送面52的帶狀接合導線 15吸附於搬送帶51。因此，帶狀接合導線。的後側在載 置於搬送帶51的指定位置定位。又，藉由帶狀接合導線 的後側疋位，使得τ狀接合導線15的前側也被限制寬 度方向的移動，使其與太陽電池單元1〇的表側連續電極 11的位置一致。 25 201139021 又，如圖6A及圖6B所示，帶狀接合導線15在中央 彎曲成形為相當於太陽電池單元1〇的厚度，因此，可防 止帶狀接合導線15的前側從太陽電池單元1〇上浮離。 =，如圖6B所示，將帶狀接合導線的前側往下側傾斜， 藉由載置前側往下側傾斜的帶狀接合導線，使帶狀接合導 ，15b的前側因帶狀接合導線15b的彈力壓合於太陽電池 單元10的表側連續電極u。因此，帶狀接合導、線15的前 側與太陽電池單元10的表側連續電極u緊密地面接觸， 可防止帶狀接合導線15b與太陽電池單元1〇之間產生偏 移。 接著，單元載入裝置21將下一個太陽電池單元1〇載 置於已被載置的帶狀接合導線15之後側。具體地，單元 載入裝置21載置太陽電池單元】〇的位置為使得已被載置 的各帶狀接合導線！5的後側與太陽電池單元1()的各裏側 連續電極12 -致的位置。接著，吸附裝置％藉由單元吸 附孔54吸引帶狀接合導線15上所載置的太陽電元 10 ° 接著，藉由搬送滾輪55a、55b及搬送帶51 ,間歇搬 送太陽電池單元10及帶狀接合導線15相當於約略一個太 陽電池單元1〇的長度。 利用帶狀接合導線載入裝置33、單元载人裝置21及 搬送帶Μ的動作，可在搬送帶51上正確地將太陽電池單 凡及帶狀接合導線15定位且列狀配置。 接著，參照圖9⑷，說明帶狀接合導線載入農置33201139021 VI. Description of the Invention: [Technical Field] The present invention relates to a welding device and a welding method for welding a solar cell and a ribbon bonding wire. [Prior Art] The solar cell module has a plurality of solar cell units arranged in a row on one side, and adjacent solar cells are electrically connected to each other. In the case where the solar cells are electrically connected to each other, the front side of one of the adjacent solar cells is connected by a soldering device and a tape automatic bonding lead (TAB lead). The continuous electrode is welded to the inner continuous electrode of another adjacent solar cell unit. A conventional welding device has a loading portion and a welding portion. The loading portion sequentially arranges the solar cell unit and the strip-shaped bonding wires, and the soldering portion welds the solar cell unit and the strip-shaped bonding wires. The loading unit conveys the strip-shaped bonding wires and the solar cell units in a row shape at a predetermined interval on the transport belt that is transported at regular intervals, and transports them to the welded portion. The welding unit heats the portion of the solar cell unit in contact with the strip-shaped bonding wire to a temperature equal to or higher than the melting point of the solder by a hot air heater or the like in a short time before the next conveyance, and then joins the solar cell unit to the strip by pressing. Wire welding. However, in the case of the soldering apparatus as described above, the portion where the solar cell unit is in contact with the strip-shaped bonding wire rises from a state of about room temperature to a temperature above the melting point of the solder in a short time, and therefore, the solar cell single 201139021 yuan Rong: Produces cracks. In order to prevent the solar cell from being cracked, it is considered that the temperature rises slowly, but the cycle time of the solar cell alone becomes longer, which will make it difficult to increase production efficiency. ! In the case where the solar cell unit is cracked due to the rapid decrease in the degree of the lead-down, the production yield is low. For example, Patent Document 1 discloses a f-joining guide welding for solar cells, which is provided with flat heating of the material. Device. By providing the flat panel heater as a means of prevention, it is possible to prevent cracking of the solar battery unit due to rapid heating. Further, for example, Patent Document 2 discloses a manufacturing apparatus of a solar battery module in which a heating block is provided in a wall panel. This type of heating block is provided to prevent the solar cell from being cracked by rapid heating, and the production efficiency can be improved to some extent. [Patent Document 1] Japanese Laid-Open Patent Publication No. 2005-191259. However, for example, the welding device disclosed in Patent Document 1 does not have sufficient pre-preparation. The heat is placed adjacent to the soldering portion, so that the solar cell unit and the strip-shaped bonding wires are heated to a temperature above the soldering point, so that the production efficiency cannot be improved. Further, even if the temperature is rapidly increased in order to increase the production efficiency, the solar battery unit may have problems such as cracks. Further, for example, in the case where the solar cell unit is connected to the strip-shaped bonding wire by the manufacturing apparatus of the solar cell module disclosed in Patent Document 2 or the like, 'because the entire solar cell unit is from the preheating stage to the welding stage Adding 201139021 Heat to a temperature higher than the melting point of the solder will cause damage to the solar cell unit, and cracks and the like may occur due to the situation, and there is a problem that the production efficiency cannot be sufficiently improved. Here, the temperature change of the solar cell unit and the strip-shaped bonding wires in the case where the manufacturing apparatus of the solar cell module disclosed in Patent Document 2 or the like is welded will be described with reference to Fig. 14'. 14 is a graph showing changes in temperature of the entire solar cell unit and the strip-shaped bonding wires, and the horizontal axis is a manufacturing device for displaying a solar cell module disclosed in Patent Document 2, in which the solar cell early element and the ribbon bonding wire are transported. Position, the vertical axis shows the temperature of the solar cell unit and the ribbon bond wire. The top of the graph of Fig. 14 corresponds to the horizontal axis and the position of the solar cell unit and the ribbon bonding wire to be conveyed, and shows a part of the manufacturing apparatus 200 of the solar cell module disclosed in Patent Document 2. In the solar cell module manufacturing apparatus 200 shown in FIG. 14, a heating block 202 and a cooling block 203 are provided in the enclosure 201. The solar cell module manufacturing apparatus 200 transports the solar cell unit and the strip-shaped bonding wire in the enclosing plate 201 in the direction of the arrow D. When the solar cell module manufacturing apparatus 200 transports the solar cell unit and the strip-shaped bonding wires in the enclosure 201, as shown in the graph of FIG. 14, the solar cell unit and the strip-shaped bonding wires are rapidly heated by the heating block 202. . The solar cell module manufacturing apparatus 200 heats the temperature of the entire solar cell unit and the strip-shaped bonding wires to a temperature higher than the melting point of the solder (1801) by the heating block 202. Then, the solar cell unit as a whole and the strip-shaped bonding wires are continuously heated to a temperature higher than the soldering point to solder the solar cell unit and the ribbon bonding wires. Thereafter, the solar cell unit and the ribbon bonding wire are cooled by the 201139021 cooling block 203 during the cooling phase. The manufacturing device 200 of the conventional solar battery module is continuously heated to a temperature higher than the melting point of the solder in the preheating stage to the soldering stage, in which the entire solar cell unit and the ribbon bonding wires are continuously heated. That is, the movement is continuously continued from the preheating stage to the welding stage, and therefore, it is impossible to control the time for heating to a temperature higher than the melting point of the welding. Therefore, the solar cell unit is subjected to high-temperature heating for a long period of time, causing damage to the solar cell unit such as cracks. Further, in recent years, the melting point of the solder used is a lead-free solder paste having a high melting point, which causes damage to the solar cell unit. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a welding device and a welding method for welding a solar cell unit and a strip-shaped bonding wire, so that the output per unit time is greatly improved, and the solar cell unit does not have a turtle. Cracked and other damage. In order to achieve the above object, a soldering apparatus according to the present invention is a soldering apparatus for soldering a solar cell unit and a strip-shaped bonding wire, which includes the solar cell unit in a state where the solar cell unit and the strip-shaped bonding wire are overlapped with each other. And a preheating portion that heats the strip-shaped bonding wire to a temperature lower than a melting point of the solder; and a soldering portion that heats the overlapping portion of the solar cell unit and the strip-shaped bonding wire to a temperature higher than a melting point of the solder. Further, the soldering portion includes a heating body disposed along a longitudinal direction of the strip-shaped bonding wire, the heating body contacting the solar cell unit by approaching or contacting an overlapping portion of the solar cell unit and the strip-shaped bonding wire The overlapping portion with the 201139021 shaped bonding wire is heated to a temperature higher than the melting point of the solder. In this case, the overlapping portions of the preheated solar cell unit and the strip-shaped bonding wires can be locally heated, and the overlapping portions of the solar cell unit and the strip-shaped bonding wires can be heated to a temperature higher than the melting point of the solder in a short time. temperature. Further, the heating body may be configured to have a plurality of pressing members that press the strip-shaped bonding wires with respect to the solar battery unit. In this case, each of the pressing pins can positively press the band-shaped bonding wires against the solar battery cells. Further, the configuration of the welding device further includes a transfer unit that transports the solar battery unit and the strip-shaped bonding wire to the k preheating unit and the welding unit, and the conveying unit adsorbs the solar battery unit being conveyed to the conveying belt. The solar cell unit and the strip-shaped bonding wire can be transported in a positioned state by sandwiching the strip-shaped bonding wire between the solar cell unit and the conveyor belt. In this case, the band-shaped bonding wires sandwiched between the solar battery cells and the conveyor belt can be conveyed while being positioned without being displaced from the solar battery cells. Further, the transport unit may be configured to adsorb the solar battery unit by the unit adsorption holes of the transport belt located on both sides of the belt-shaped lead wire being conveyed, and to adsorb the solar battery unit to the transport belt. In this case, the band-shaped bonding wire sandwiched between the solar cell unit and the conveyor belt can be moved without being displaced from the solar cell unit. Further, the transport unit can be configured to adsorb the strip-shaped bonding wire placed on the transport belt to the transport belt to position the band-shaped bonding wire with respect to the transport belt. In this case, when the solar cell unit is placed on the strip-shaped joint 201139021 wire and the strip-shaped bonding wire is placed on the conveyor belt, the strip-shaped bonding wire can be correctly positioned without being displaced. Further, the configuration of the transporting portion can adsorb the ribbon-shaped bonding wire by the strip-shaped bonding wire absorbing hole of the carrier tape on the lower side of the strip-shaped bonding wire placed on the carrier tape, and the ribbon-shaped bonding wire can be made The bonding wire is adsorbed to the conveyor belt. In this case, when the solar cell unit is placed on the strip-shaped bonding wire and the tape-shaped bonding wire is placed on the conveyor belt, the ribbon-shaped bonding wire can be accurately positioned without being displaced. Further, the configuration of the transporting portion can adsorb the belt-shaped bonding wire that is being transported before the welding of the band-shaped bonding wire starts to melt. In this case, in the transport of the solar cell unit and the strip-shaped bonding wire, the positional deviation of the strip-shaped bonding wires can be surely prevented. Further, the configuration of the soldering device further includes a strip-shaped bonding wire supply portion for supplying the strip-shaped bonding wire. The band-shaped bonding wire supply portion can bend the band-shaped bonding wire to connect the band-shaped bonding wire to the solar cell. One side of the front side continuous electrode of the unit and a side of the strip-shaped bonding wire connected to the inner side continuous electrode of the solar cell unit have a step difference. In this case, the ribbon bonding wires do not float on the solar cell unit, but the ribbon bonding wires can be in contact with the solar cell unit. Further, the strip-shaped bonding wire supply portion may be formed by obliquely shaping the strip-shaped bonding wire so that the band-shaped bonding wire is connected to one side of the front side continuous electrode of the solar cell unit, with the tape-shaped bonding The front end of the wire, the front end of the strip bonding wire is in contact with the front side continuous electrode. In this case, by the elastic force of the ribbon-bonding wire, the ribbon-shaped bonding wire presses the 10 201139021 solar battery unit, so that the ribbon-shaped bonding wire and the solar battery cell are not displaced, and the positioning state can be maintained. Moreover, the welding device further includes a temporary fixing device that can heat the overlapping portion of the solar cell unit and the strip-shaped bonding wire to a temperature higher than a melting point of the solder by the splicing portion. The shaped bonding wire and the solar cell unit are temporarily fixed in a superposed state. In this case, the strip-shaped bonding wires are not displaced from the solar cell unit and can be transported in the positioned state. Further, the temporary fixing means can be temporarily fixed by heating the band-shaped bonding wires superposed on the front side continuous electrodes of the solar battery cells. In this case, the offset of the strip-shaped bonding wires with respect to the solar battery cells can be more reliably prevented. Further, the welding device further includes a cooling portion that can overlap the T-cell battery unit and the strip-shaped bonding wire by the soldering portion from one of the long sides of the strip-shaped guide In this case, the partially spliced welding kick cold portion can eliminate the bending of the solar battery unit after the splicing. * The welding method of the present invention is characterized in that the solar cell unit and the strip bonding method are included, and the solar cell unit and the strip bonding wire are in a state in which the solar cell unit and the strip-shaped joint are overlapped. Mouth: Preheat to the temperature below the rod. And the welding process of heating the overlapping portion of the solar electric wire to a temperature higher than that of the tan. The line, m month, can weld the solar cell unit and the strip-shaped bonding wire to greatly increase the output of the early time, and the solar cell single 201139021 yuan will not be damaged by cracks or the like. [Embodiment] A welding apparatus 100 according to this embodiment will be described below with reference to the related drawings. Further, in the drawing, the front side of the welding device 100 (the discharge side of the welded solar cell unit and the strip-shaped bonding wire) is indicated by an arrow symbol Fr as needed, and the rear side (the solar cell unit and the belt) is indicated by an arrow symbol. The supply side of the wire is joined). Here, the solar cell unit 1 and the strip-shaped bonding wires 15 soldered by the bonding apparatus 100 will be described with reference to Figs. 1A, 1B and 1C. Fig. 1A is a plan view showing a state in which a plurality of solar battery cells 1 are arranged in a strip shape in a strip-shaped bonding wire 15 as viewed from the front side of the front side electrode (hereinafter referred to as the front side). Fig. 1B is a side view showing a state in which the plurality of solar battery cells 10 in which the strip-shaped bonding wires 15 are arranged in a line shape are viewed from the side. Fig. 1 is a view showing the configuration of the solar battery unit 10. Figure lc(a) is a plan view of the solar battery cell 10 as viewed from the front side. Fig. 1c(b) is a plan view of the solar cell unit 10 viewed from the inner side continuous electrode side (hereinafter referred to as the crotch side). The solar cell unit 10 is formed in a rectangular plate shape having a thickness of about 016 mm. As shown in Fig. 1C(a), in the present embodiment, the front side of the solar battery cell 1A is provided with two front side continuous electrodes n'. The front side continuous electrode u crosses the opposite side from the side of the solar battery cell 10. . Further, on the front side of the solar cell, also on the front side of the unit H), a plurality of finger portions 13 are provided which intersect perpendicularly from the side of the solar cell K) and intersect the side emitters u. Further, as shown in the figure ic (b), the rear side of the solar battery unit 10 is provided with 201139021 having two inner continuous electrodes 相同 which are the same as the front side continuous f-pole 11 and which straddle the opposite side from the solar cell single A 1G - side. In order to weld the wire-like wire 15 , the surface of the electrode n and the electrode are: the surface is coated with a soldering iron. On the other hand, as shown in Fig. 1A and Fig. 1B, the strip connection guide (4) is formed at a thickness of about G. 2mm and sheet-shaped, flat-shaped wire. The strip connection wire 15 is formed of copper, and is welded to the surface side continuous electrode u and the back side continuous electrode 12, and the surface is coated with a welding kick. As shown in Fig. 1A and Fig. 1B, the welding is performed in a state where the plurality of wires 10 are arranged in a belt-like connection and the wires 15 are placed in a state of care. Specifically, the solar cell units 1 are arranged at a predetermined interval, and the middle to one side (front side) of the strip-shaped connecting wires are placed one on top of the front side continuous electrode u of the solar cell unit 10, in the middle of the strip-shaped connecting wires 15. The other side (rear side) is disposed to be disposed on the inner side continuous electrode 12 of the adjacent solar cell single A 10 . The distance between the centers of the two strip-shaped connecting wires 15 is W (refer to Fig. 1a). In this manner, the welding apparatus 100 heats the overlapping portions of the solar cell units 1A arranged in a row and the strip-shaped bonding wires and wires 15 to weld the continuous electrodes and the strip-shaped connecting wires 15 to each other. The solar cell unit 10 and the strip-shaped bonding wires 15 are electrically connected. Next, a splicing device 100 of the present embodiment will be schematically described with reference to Fig. 2 . FIG. 2 is a view showing a schematic configuration of the welding device 100. The welding device 1 of the present embodiment is constituted by a plurality of constituent elements that perform the relevant welding process. Specifically, the welding device 1 includes a solar cell supply unit 20, a belt-shaped bonding wire supply unit 3, a conveying unit 50, a preheating unit 60, a welding unit 70, and a cooling unit 80. Here, each constituent element will be briefly described. First, the solar battery cell supply unit 20 supplies the solar battery unit 10 to the transport unit 50. In the belt-like joining, the wire supply portion 3G is formed by bending the band-shaped bonding wire 15f, and is cut to a predetermined value, and then supplied to the conveying portion %. At this time, the solar battery cell supply unit 2, the strip-shaped connecting wire supply unit 3G, and the transport unit 5G operate alternately, and the solar battery cells 10 and the strip-shaped connecting wires 15 are arranged in a row as shown in FIGS. 1A and 1B. The conveyor belt 51 of the portion 50 is placed on the conveyor belt 51. The transport cassette 50 transports the solar battery unit 10 and the strip-shaped connecting lead 15 to the welded portion 7G and the cooling unit (9) in a state of "4". In preheating, β. - The medium ironity control device 61 heats the solar power while the solar cell in the heating furnace 62 is controlled to a temperature equal to or lower than the bright point: _! body and π-shaped connecting wire 15. The welding portion partially heats the overlapping portion of the continuous electrode of the solar cell and the strip connecting wire 15 and thermally presses the connecting wire with respect to the solar cell unit 1 to weld the battery unit 1G and the strip connecting wire. 15. The cooling unit (10) cools the sun/mo and the strip-shaped connecting wire 15 to solidify the overlapping portion of the solar cell unit 1〇 and the strip-shaped connecting wire 15. According to the embodiment of the present invention, the welding skirts can be made to make the above-mentioned t-pieces (four) mutually (four), and (iv) the efficiency of riding and the strip-shaped connecting wires 15 of the 悝 平 ping 1 will be described in detail below. /, basket composition and action processing. (Solar battery unit supply unit 20) 14 201139021 The solar battery unit supply unit 20 supplies the solar battery unit 10 to the transport unit 50. As shown in Fig. 2, the solar battery cell supply unit 20 has a cell loading device 21. The unit loading device 21 can reciprocally move the solar battery unit 10 that is not welded and placed in the stocker 22 from the storage table 22 to the transport unit 50. Specifically, the unit loading device 21 is placed on the transfer belt 51 of the transport unit 50 at a predetermined position after sucking one solar battery unit 10 from the storage table 22. Further, when the solar battery unit 10 is supplied to the transport unit 50, the photographing device (not shown) checks whether or not the solar cell is cracked, and may have a flux supply device not shown to apply the flux to the solar battery unit. The front side continuous electrode 11 and the back side continuous electrode 12 of 10. (Belt-joining wire supply unit 30) The tape-joining wire supply unit 30 performs bending on the band-shaped bonding wire 15 of a predetermined length and supplies it to the conveying unit 50. As shown in FIG. 2, the band-shaped bonding wire supply portion 30 is formed by bending a band-shaped bonding wire of a predetermined length, and has a tape-shaped bonding wire loaded by placing the bent band-shaped bonding wire 15 on the carrier tape 51 ( Loading) device. Here, the band-shaped bonding wire loading device 33 will be described with reference to Figs. 3 to 5 . Fig. 3 is a perspective view showing the configuration of the band-shaped bonding wire loading device 33. Fig. 4 is a view of the band-shaped bonding wire loading device 33 as seen from the direction of the arrow A shown in Fig. 3. Figure 5A is a strip-shaped wire loading device viewed from the direction of arrow B shown in Figure 3. Figure 33. As shown in Fig. 3, the band-shaped bonding wire loading device 33 is disposed on the side of the transport unit 15 201139021 portion 50, and is constituted by an upper type 37, a lower type 42, and the like. The upper type 37 is one of metal molds for bending the band-shaped bonding wires 15, and is movable in the vertical direction and the horizontal direction by a top type driving device not shown. As shown in Figs. 4 and 5A, the lower surface of the upper mold 37 has two projecting portions 38 which are formed in parallel along the conveying direction of the conveying belt 51. The lower surface of each of the ridges 38 has a forming portion for pressing the band-shaped bonding wires 15 so as to protrude downward. The forming cores 9 formed in the respective rib portions 38 have a width which slightly coincides with the width of the strip-shaped bonding wires 15. Further, the distance between the adjacent molding portions 39 is the same as the distance w between the centers of the two strip-shaped wires 15 illustrated in Fig. 1At (see the figure, etc.). also. As shown in Fig. 4, a segment portion 4 is formed in the longitudinal direction of each of the forming portions 39. Each of the forming portions 39 is bounded by the segment portion 40, and its rear side protrudes slightly downward from the front side. The step of this section 40 is approximately the solar cell_thickness. Further, as shown in Fig. 4, each of the ridge portions 38 of the upper type 37 is formed with a plurality of adsorption holes 41 which are spaced apart in the lateral direction. Each of the adsorption holes 41 is formed in the vertical direction of the rib (4) in the vertical direction, and the strip-shaped bonding wire adsorption device which is opened under the molding portion % is formed by the respective adsorption holes 4, thereby making it possible to The strip-shaped bonding wire 15 is attracted to the type 38 38 37, and the heating element 48 of the temporary fixing interval is used as the front end portion and the rear end portion. In addition, the heater 201139021 has its front end heated to a temperature above the melting point of Tan. The heating of the heater 48 can be performed by a resistance heat method or the like. The shape of each of the heaters 48 in the molded portion % is as shown by the two-dot chain line in Fig. 4, and can be formed from the lower side of the molded portion to the elevating mechanism not shown in the following figure. When the front side of the strip-shaped bonding wire 15 is placed on the solar cell unit () as described later in the case, each of the heaters 48 protrudes from the lower side of the forming portion 39, whereby the band-shaped bonding can be performed. The specified position of the wire 15 is heated, thereby causing a portion of the welding kick of the ribbon-shaped access wire to be dazzled. By using the welding-spin-partial pureness of the strip-shaped bonding wires 15, the strip-shaped bonding wires are connected to the solar cell units for a temporary (fourth) setting. Further, in the fourth embodiment, the heater is not placed at the front end portion and the rear end portion of the front side of the ridge portion 38. However, the present invention is not limited thereto, and may be provided in two or more places. On the other hand, the lower type 42 is used to join the belts y. . . . . . *Τ η入饮3-守 '咏1 :) The other of the curved metal molds, and can be moved in the vertical direction by the lower type driving device not shown. The lower squat type 42 has two ridge portions 43 on the upper surface thereof, and is formed in parallel along the conveying direction of the conveyor belt 51. As shown in Figs. 4 and 5B, the upper surface of each of the ridge portions 43 is divided to press the groove portion 44 of the band-shaped bonding wire 15. The groove portion 44' formed in 43_ has a width which is the same as the width of the strip-shaped bonding wire 15. X, the distance between the adjacent groove portions 44 and the distance w between the centers of the two strip-shaped bonding wires 15 of Fig. 2: Ming = 5A, etc.). Moreover, as shown in FIG. 4, the segment 45 is formed in each of the recesses and the groove portions 44 of the ridge portions of the lower mold 42. This section of the shirt is located vertically below the section 4〇 formed on each of the upper concave forming portions 39. That is, the position of the segment 45 of the lower type $17 201139021 is such that when the pressing force is pressed, the segment portion 4〇 of the upper mold 37 and the segment portion 45 of the lower mold 42 are sandwiched between the upper type 37 and the lower type. The strip-shaped bonding wires 15'(4) are in a stepwise manner from the position of the center of the strip-shaped bonding wires 15a shown later. Further, the groove portions 44 of the lower mold 42 are bounded by the respective segments 45' The depth of the groove is slightly (four) the depth of the groove on the front side. The step of the segment 45 is approximately the thickness of the solar cell unit. Next, referring to Fig. 4 and Fig. 5A, the band bonding wire loading device 33 will be described as a band bonding. The operation of bending the wire 15 is also shown. As shown in Fig. 2, the band-shaped joint (10) i5 f supplied by the reel 32 is shaped, and the other adjacent reels 32 are supplied. The case where the strip-shaped bonding wires 15 are bent and formed is also the same and simultaneously. First, as shown in Fig. 4, the strip-shaped bonding wire holder (eg) pulls the band-shaped bonding wires 15 from the reel 32 to be horizontally held. Then, the lower type driving device raises the lower mold 42 and then engages the band-shaped bonding wire 15 to The groove portion 44 of the mold 42 is in place (see also the lower mold shown by the two-dot chain line in Fig. 5A). Next, the 'band-shaped wire cutter cutter 36 cuts the strip-shaped joint wire 15. Further, the strip shape The bonding wire holder % releases the holding strap-shaped bonding wire 15 and retreats to the rear. Then, the upper driving device lowers the upper mold 37 and presses the fitting into the lower type 42# ribbon bonding wire 15 (see also FIG. 5A). The upper type indicated by a two-dot chain line. By the above operation, the band-shaped bonding wire 15 of a predetermined length is pulled out from the reel 32, and the segment portion formed by the forming portion 39 of the upper type 37 is centered. The segment portion 45 formed by the groove portion 44 of the side lower mold 42 is bent and formed at the center by 201139021. Further, the formed band-shaped bonding wire 15 is pressed between the upper mold 37 and the lower mold 42, whereby The shape of the curling disk 32 can be directly improved. Next, the operation of the tape-shaped bonding wire loading device 33 to place the cut tape-shaped bonding wire on the conveyance belt 51 will be described with reference to Figs. 5A and 5B. 5B is a view of the conveyor belt 51 viewed from the direction of the arrow c shown in Fig. 3. After the wire 15 is joined, the upper mold 37 of the tape-shaped bonding wire loading device 33 adsorbs the ribbon-shaped bonding wire 15 through the adsorption hole 41. The upper-type driving device and the lower-type driving device respectively release the upper and lower molds. The strip-shaped bonding wire 15 is in a state of being adsorbed only to the upper mold 37. Next, as shown in Fig. 5B, the upper-type driving device moves the upper mold 37 to which the ribbon-shaped bonding wire 15 is adsorbed to the conveying portion 5 in the horizontal direction. Further, as shown by the two-dot chain line of Fig. 5B, the upper type moving device lowers the upper mold 37 'after' the upper mold 37 releases the adhesive ribbon-like bonding wire 15. Therefore, as shown in Fig. 5B As shown by the dotted line, the two strip-shaped bonding wires 15 are placed at a predetermined position on the conveying surface 52 of the conveying belt 51. Here, the distance between the two strip-shaped bonding wires 15 is the same as the distance W between the centers of one of the ▼-shaped bonding wires 15 illustrated in Fig. 1A. According to this, by the action of the strip-shaped bonding wire loading device 33, the ribbon-shaped bonding wire supply portion 30 cuts the ribbon-shaped bonding wire 15 into a predetermined length and is formed into a test piece, and the formed ribbon-shaped bonding wire 15 can be supplied. It is 5 to the transport part. Further, when the upper mold 37 mounts the band-shaped bonding wire 15 to the designated position of the conveyor belt 51, the band-shaped bonding wire holder 35 is fitted with the band-shaped bonding wire 15 19 201139021, and the cut portion is pulled away from the horizontal direction. Maintaining the level, it is prepared to bend the lower strip-shaped bonding wires 15 into a shape. = In this case, the unit loading device of the solar cell supply unit 2〇 is connected to the strip-shaped bonding wire carrying device 3Q, and the solar cell unit 1 and the ribbon bonding wire are sequentially arranged. It is placed on the transport unit 50. As shown in Fig. 1A and Fig. ib, the plurality of solar battery cells 10 are arranged in a row in a strip-shaped bonding wire 15 as shown in Figs. 1A and ib. Further, the above-described strip-shaped bonding wire supply portion 3 is formed by cutting and bending the band-shaped bonding wires 15 and placing the formed tape-shaped bonding wires 15 on the transfer tape 51 as a strip-shaped bonding wire. The apparatus for loading the package m can also be formed by separately forming the device for forming the strip-shaped bonding wire 15f and the device for placing the formed ▼-shaped bonding wire 15 on the conveyor belt 51. Here, the shape of the strip-shaped bonding wire 15 formed by the upper mold 37 and the lower mold will be described with reference to Figs. 6A and 6B. Fig. 6A is a side view of a strip-shaped bonding wire 15a formed by the strip-shaped bonding wire loading device 33 of the present yoke core. Fig. 6A shows the solar cell unit (7) with a two-dot chain line. The strip-shaped wire 15a is bent at the center so that the front side becomes high to the thickness of the solar cell unit 10. Therefore, the strip-shaped bonding wire 15a is placed on the moving. When the conveyor belt 51 of the crucible 50 is placed on the solar cell that has been placed on the surface of the solar cell, the bonding wire 15a is not detached from the solar cell unit 1a, and the band-shaped bonding wire 15a and the solar cell are not floated. 1〇 can be in contact with the ground. Fig. 6B is a side view showing another aspect of the strip-shaped bonding wire 15b. (3⁄4] iv *- - The point key line indicates the solar cell unit 1 〇. The ribbon bonding wire 15b 20 201139021 is formed at the center f curved so that the front side becomes high to the thickness of the solar cell unit 10. Again, the ribbon bonding guide wire 15b is formed toward the front side of the front side, and the front side is gradually inclined downwardly. The upper type 37 and the lower type 42 of the strip-shaped bonding wire loading device 33 can also form the strip-shaped bonding guide wire 15b as shown in Fig. 6B. Therefore, the molded portion 39 of the upper mold 37 and the concave portion 44 of the lower mold 42 may be formed so as to be inclined toward the front end of the front side, and the front side may be inclined downward. Therefore, the belt-shaped bonding wire 15b is placed on the transport portion 5〇. When the belt 51 is transported, even if it is placed on the solar battery unit that has been placed, the ribbon-shaped bonding wire (10) will be separated from the solar battery unit 1G, and the tie-shaped bonding wire (10) and the solar cell single it 1G can be large. The ground contact is further advanced, and the front side of the band-shaped bonding wire 15b acts on the solar cell unit 1 due to the elastic force of the band-shaped bonding wire 15b as it goes toward the other side and the crotch side is inclined to the lower side. Therefore, the ribbon bonding wire 15b and the solar power are made Further contact of the unit 1 is prevented, and the offset between the two can be prevented. As shown in Fig. 7, the strip-shaped bonding wires 15 which are initially placed are not subjected to the bending forming as described above. Next, the f-shaped bonding wire loading device 33 is provided with means for performing upper and lower moldings which are not bent and separately provided, and can be fed by sucking the f-shaped bonding wires 15 which do not form a step in the center. The wire bonding wire loading device 33 bends the ribbon bonding wire 15 that is finally placed on the conveyor belt 51, but is shorter than the first ribbon bonding wire 15 or the intermediate ribbon bonding wire 15. Specifically, the strip-shaped bonding wire i5c shown in Fig. 6C has a short length on the rear side. 201139021 (Transporting unit 50) The engineering performed by the conveying unit 50 is performed in the solar battery unit (7) and the strip-shaped connecting wire 15 In the columnar state, m is intermittently transported to the preheating portion, the welded portion 70, and the cooling portion 80. As shown in Fig. 2, the conveying portion 50 has the conveying belt 5, the conveying rollers 55a, 55b, and the suction device 56 # Conveyor belt 51 and conveying roller 55a And the conveying roller 55b disposed at a position close to the portion 80 is rolled up. The conveying ▼ 5] is a thin and king-shaped belt, which is made of metal in order to improve thermal conductivity, and is not shown by the driving diagram. In the roller driving device, each of the conveying rollers 55a and 55b is rotated in the direction of the arrow, and the roller driving device is connected to the rotating shaft of the conveying rollers 55a to 55b. The conveying rollers 55a and the conveying roller are placed on the conveying surface of the conveying belt 51. The solar battery unit of 52 and the band-shaped bonding wire (hereinafter referred to as "fourth") are conveyed in the order of the preheating portion, the welding portion 70, and the cooling portion 80. Further, the adsorption device 56 is spread over the length of the conveying blade. The side direction is disposed on the lower side of the conveying surface 52 of the conveyor belt 51. The adsorption unit is configured such that the solar battery unit 1 () and the band-shaped bonding wire 15 mounted on the transfer surface 52 are adsorbed to the transfer belt 51'. The operation of adsorbing the solar battery unit H) and the band-shaped bonding wire 15 by the adsorption device 56 will be described later. Further, as shown in Fig. 3, a plurality of strip-shaped bonding wire suction holes 53 are formed in the conveying belt 51, and are continuously formed in the circumferential direction of the conveying belt 51. In the conveyance belt 51 of the present embodiment, two strip-shaped joined wire suction holes 53 are formed in the left and right sides in the width direction of the conveyance belt 51. The position of the strip-shaped wire-releasing hole 53 is formed in accordance with the band-shaped wire-carrying device % 22 201139021 and is connected to each band (see also Fig. 5B). :, 'The position of the friend placed on the conveyor belt 51 is the same as that of FIG. 1 _ 'f The strip-shaped joint wire adsorption hole 53 is the same as the inter-column distance w. n The wire adhesion between the centers of the solid-belt bonding wires 15 As shown in FIG. 3, the hole 53 is formed with a plurality of unit adsorption holes 54 formed on the side of each of the belts - ^ ς λα of the conveyor belt 51, and is continuously formed in the circumferential direction of the conveyance: 51. 56(Λ) 813 and FIG. 7 to FIG. 9' illustrate the movement of the solar cell unit 1Q and the ribbon bonding wire 15 by the adsorption device i, and the movement of the solar cell unit 1 () and the ribbon bonding wire 搬* This Fig. 7 (4) is a perspective view showing a state in which the strip-shaped bonding wire loading device % is placed on the conveyance belt 51 by the first 7 〇Ir large bonding wire I5. Fig. is a cross-sectional view taken from the arrow direction 2 by cutting the η line which is not shown in Fig. 7 (4) in the vertical direction. Further, Fig. 8 (4) is a perspective view showing a state in which the display unit loading unit 21 places the solar cell in the transport belt 51. Fig. 3 is a cross-sectional view taken from the direction of the arrow when the Π_η line which is not shown in Fig. 8(4) is cut in the vertical direction. Fig. 9 (4) is a perspective view showing a state in which the band-like bonding wire loading device % is placed on the carrier tape 51 by the next (or the last) ribbon bonding wire 15. Fig. 9(b) is a cross-sectional view showing the m-ln line (including the cross section of the heating furnace 62_solar cell unit and the strip-shaped bonding wire) shown in Fig. 9(a) in a vertical direction as viewed in the direction of the arrow. Further, Fig. 7(a), Fig. 8 (heart and Fig. 9(a) show the inlet 64 of the heating furnace 62 to be described later. First, as shown in Fig. 7(a), the band-shaped bonding wire loading device % will The first strip-shaped bonding wires 15 are placed in parallel at the designated positions of the conveying surface 52 in parallel, that is, placed in parallel along the continuous strip-shaped bonding wires 23 201139021 adsorption holes 53. Then, the adsorption device is placed. % Each of the strip-shaped bonding wires 15 placed on the conveying surface 52 is sucked by the respective band-shaped bonding wire suction holes 53. Specifically, as shown in Fig. 7 (b), the "adsorption device %" is located by each belt of the conveying belt Each of the strip-shaped bonding wire suction holes 57 on the lower side of the bonding wire adsorption hole 53 generates a suction y * ll y4 = 玍 and an attachment, so that the respective band-shaped bonding wires 15 are attracted to the conveying belt 51. Therefore, each band The joint wire 5 is positioned at a predetermined position of the conveyor belt 51. (D) As shown in Fig. 8, the unit loading device 21 places the first solar cell early 1 G on the designated position of the transport surface 52. Specifically, the unit carries The position at which the solar cell unit W is placed by the inlet device 21 is such that each of the strip-shaped joints that have been placed The rear side of the line 15 and the inner side continuous electrode 12 of the solar battery unit ig are in a position. When the solar battery unit 1 () is placed on the strip-shaped bonding wire 15, it is in contact with the strip-shaped bonding wire 15, and the strip-shaped bonding wire There is an offset. However, since each of the strip-shaped bonding wires is relatively transported by the adsorption device 56, it does not move even when it comes into contact with the solar cell unit 10, and can be maintained at a specified position. The device 56 adsorbs the (4) solar cell sheets a 1 () on the transfer surface 52 by the respective unit adsorption holes 54. More specifically, (4) is the solar battery cells 1 所载 placed on the respective strip-shaped bonding wires 15. Specifically, 8(8), the adsorption device 56 is adsorbed by the unit suction & 58 located below the unit adsorption hole of the conveyor belt 51, whereby the solar power and the unit 10 are also adsorbed to the conveyor belt 51. Therefore, the sun The battery unit 1 is positioned at a designated position of the conveyor belt 5, that is, the strip-shaped bonding wire 15 is aligned with the inner side continuous electrode 12 of the solar cell sheet 10. At this time, the battery unit ίο is bonded to each strip. guide The vicinity of the contact of the wire 15 is slightly bent and adsorbed. Therefore, the respective band-shaped bonding wires 15 are sandwiched between the solar cell 10 and the conveyor belt 51. Therefore, the solar cell unit 1 and the respective strip-shaped bonding wires 15 are not The state in which the displacement is maintained can be maintained. Further, Fig. 8(b) emphasizes a state in which the solar battery unit 1 is bent by the suction hole 54 and fixed in the vicinity of the band-shaped bonding wire 15. Next, The conveyance rollers 55a and 55b and the conveyance belt 51 intermittently carry the solar battery unit 10 and the belt-shaped bonding wire 15. Specifically, the roller driving device moves the conveyor belt 51 by a length corresponding to approximately one solar battery unit (7). At this time, since the adsorption device 56 continues to adsorb the solar cell unit 1〇, the solar cell unit 10 and the strip-shaped bonding wire 15 are not displaced by vibration or the like during transportation. Next, as shown in Fig. 9(a), the strip-shaped bonding wire loading device phantomly places the next bent-shaped strip-shaped bonding wire 15 at a designated position on the conveying surface 52. Specifically, the front side of each of the strip-shaped bonding wires 15 is placed at a position coincident with the front-side continuous electrodes u of the solar cell unit 10, and the rear side of each of the strip-shaped bonding wires 15 is along a continuous strip-shaped bonding wire. The adsorption holes 53 are each placed in parallel. Then, the adsorbing farm f56 adsorbs the belt-shaped bonding wire 15 reloaded on the conveying surface 52 to the conveying belt 51 by the belt-shaped connecting wire suction hole 53. Therefore, the ribbon is bonded to the wire. The rear side is positioned at a designated position placed on the conveyor belt 51. Further, the front side of the zigzag bonding wire 15 is also restricted in the width direction by the rear side clamping of the strip-shaped bonding wire so as to coincide with the position of the front side continuous electrode 11 of the solar cell unit 1A. 25 201139021 Further, as shown in FIG. 6A and FIG. 6B, the strip-shaped bonding wire 15 is bent at the center so as to correspond to the thickness of the solar cell unit 1A. Therefore, the front side of the band-shaped bonding wire 15 can be prevented from being smashed from the solar cell unit 1 Float. =, as shown in FIG. 6B, the front side of the strip-shaped bonding wire is inclined downward, and the strip-shaped bonding wire which is inclined toward the lower side by the front side is placed, and the front side of the strip-shaped bonding lead 15b is band-shaped bonding wire 15b. The elastic force is pressed against the front side continuous electrode u of the solar battery unit 10. Therefore, the front side of the belt-shaped bonding guide wire 15 is in close ground contact with the front side continuous electrode u of the solar battery cell 10, and the offset between the band-shaped bonding wire 15b and the solar battery cell 1 is prevented. Next, the unit loading device 21 places the next solar battery unit 1 on the rear side of the band-shaped bonding wire 15 on which the tape is placed. Specifically, the unit loading device 21 mounts the position of the solar battery unit 〇 so that the respective strip-shaped bonding wires that have been placed are placed! The rear side of 5 is adjacent to the inner side of the solar cell unit 1 (). Next, the adsorption device % sucks the solar cells 10 on the strip-shaped bonding wires 15 by the unit adsorption holes 54. Then, the solar cells 10 and the strips are intermittently conveyed by the conveying rollers 55a and 55b and the conveying belt 51. The bonding wire 15 corresponds to a length of approximately one solar cell unit 1〇. By the operation of the belt-shaped joint wire loading device 33, the unit manned device 21, and the conveyance belt cassette, the solar battery unit and the belt-shaped bonding wire 15 can be accurately positioned and arranged in a row on the conveyor belt 51. Next, referring to FIG. 9 (4), the strip-shaped bonding wire is loaded into the agricultural device 33.

S 26 201139021 將最後的T狀接合導線15載置於搬送面52的指定位置的 凊況在此，如圖9(a)以二點鏈線所示，預先設定的數個 太陽電池單元10載置於搬送帶51。 在此情況下，帶狀接合導線載入裝i 33冑最後彎曲 成形的帶狀接合導線15载置於搬送面52的指定位置。且 體地，係載置為使得各帶狀接合導線15的前側與太陽電 池早兀10的各表側連續電極u 一致的位置，且將各帶狀 接合導線15的後側沿著連續的帶狀接合導線吸附孔53各 自平行地載置。又，最後的帶狀接合導線15如圖6c所示， 係後側長度較短的帶狀接合導線…的情況，帶狀接合導 線^裝置33將f狀接合導線15e的前側載置為與太陽電 池單tl 10的各表側連續電極n 一致的位置。 接下來，於圖4中說明的帶狀接合導線載入裝置33 的上型37所設置的各加熱子判從成形部39的下方面突 出了下方，加熱各帶狀接合導線15之前側的前後二處（圖 =的暫時安裝位置59a、59b)。利用各加熱子❹ ^各帶狀接合導線15，使得各帶狀接合導線15的暫時安 裴位置59a、59b的焊埸熔化，而盥 — ，電㈣焊接在一起而暫時 15及太1^電池單元10的表側連續電極11在帶狀 ，導線15的前側暫時固定於間隔的前後，因 疋地暫時固$，俾使帶狀接合導線15b 二 之間不產生偏移。 -太以電池早π H) 依此’將最後的帶狀接合導線15與太陽電池單元… 27 201139021 暫時固定係為了使得吸附裝置56不將帶狀接合導線⑴及 附在搬送帶51。即，在加熱爐&内，最後的帶狀接合導 線15的後側不被吸附，更不被太陽電池單元⑺及搬送帶 51嵌夾。因此，若不暫時固定的話，最後的帶狀接合導線 15在搬送或焊接時，可能會在太陽電池單元1()之間偏移。 口口又，在此’說明將最後的帶狀接合導、線ls與太陽電 池單το 1G暫時固定’若係將全部載置於太陽電池單元⑺ 上的帶狀接合導線15暫時固定亦可。又，說明帶狀接合 導線載人裝置33亦可兼具專用於將帶狀接合導線15暫時 固定的暫時固定裝置。 接著，搬送帶51將被載置的太陽電池單元1〇及帶狀 接合導線15在預熱部60的加熱爐62内依序間歇搬送。 在此加熱爐62内，吸附裝置56僅吸附載置於帶狀接合導 線15上的太陽電池單元1〇，而不吸附帶狀接合導線。 具體地，如圖9(b)所示，在加熱爐62中的吸附裝置兄並 未設有在圖7(b)及圖8(b)說明的帶狀接合導線吸引孔57。 即，在加熱爐62内，吸附裝置56僅藉由位於搬送帶51 的單元吸附孔54之下側的單元吸引孔58而吸引，將太陽 電池單元10吸附在搬送帶51。又，即使吸附裝置56未吸 引V狀接合導線15，各帶狀接合導線15的兩側藉由太陽 電池單元10被壓合在搬送帶51，因此，在搬送時太陽電 池單元10與帶狀接合導線15不會產生偏移。 在此’在加熱爐62内的構成係使吸附裝置56不吸引 帶狀接合導線15係為了不給後續工程帶來障礙，若直接S 26 201139021 The situation in which the last T-shaped bonding wire 15 is placed at a predetermined position of the conveying surface 52 is as shown in FIG. 9(a) as a two-dot chain line, and a plurality of solar battery cells 10 are set in advance. Placed on the conveyor belt 51. In this case, the strip-shaped bonding wire loading device 15 is placed at a predetermined position on the conveying surface 52. Further, the body is placed such that the front side of each of the strip-shaped bonding wires 15 coincides with each of the front side continuous electrodes u of the solar cell 10, and the rear side of each of the strip-shaped bonding wires 15 is continuous along the strip The bonding wire adsorption holes 53 are each placed in parallel. Further, as shown in Fig. 6c, the final strip-shaped bonding wire 15 is a strip-shaped bonding wire having a short length on the rear side, and the band-shaped bonding wire device 33 mounts the front side of the f-shaped bonding wire 15e to the sun. The position of the continuous electrode n of each of the front sides of the battery unit t10 is uniform. Next, the respective heaters provided in the upper mold 37 of the strip-shaped bonding wire loading device 33 illustrated in Fig. 4 are protruded from the lower side of the molding portion 39, and the front side of each of the strip-shaped bonding wires 15 is heated. Two locations (temporary installation locations 59a, 59b of Figure =). Each of the strip-shaped bonding wires 15 is used to melt the solder joints of the temporary ampule positions 59a, 59b of the respective strip-shaped bonding wires 15, and the 盥-, electric (four) are soldered together for the temporary 15 and the battery. The front side continuous electrode 11 of the unit 10 is in the form of a strip, and the front side of the lead wire 15 is temporarily fixed to the front and rear of the space, and the inside of the space is temporarily fixed by the crucible, so that the strip-shaped bonding wires 15b are not displaced. - Too early battery π H) According to this, the last ribbon-shaped bonding wire 15 and the solar battery cell are used. 27 201139021 Temporarily fixed so that the adsorption device 56 does not attach the ribbon-shaped bonding wire (1) to the conveyor belt 51. That is, in the heating furnace &, the rear side of the last strip-shaped bonding wire 15 is not adsorbed, and is not sandwiched by the solar battery unit (7) and the conveying belt 51. Therefore, the final band-shaped bonding wires 15 may be displaced between the solar cell units 1 () when transported or soldered without being temporarily fixed. Further, in the above description, the last band-shaped bonding guide wire ls and the solar cell single το 1G are temporarily fixed. The tape-shaped bonding wires 15 which are all placed on the solar battery cells (7) may be temporarily fixed. Further, the belt-shaped bonding wire carrying device 33 may be used as a temporary fixing device for temporarily fixing the band-shaped bonding wire 15. Then, the conveyor belt 51 sequentially transports the mounted solar battery cells 1 and the ribbon-shaped bonding wires 15 in the heating furnace 62 of the preheating unit 60 in order. In this heating furnace 62, the adsorption device 56 adsorbs only the solar battery cells 1 载 placed on the belt-shaped bonding wires 15 without adsorbing the ribbon-shaped bonding wires. Specifically, as shown in Fig. 9 (b), the suction device in the heating furnace 62 is not provided with the band-shaped bonding wire suction holes 57 described in Figs. 7(b) and 8(b). In other words, in the heating furnace 62, the adsorption device 56 is sucked only by the unit suction hole 58 located below the unit adsorption hole 54 of the conveyor belt 51, and the solar battery unit 10 is attracted to the conveyor belt 51. Further, even if the adsorption device 56 does not attract the V-shaped bonding wires 15, the both sides of the respective strip-shaped bonding wires 15 are pressed against the carrier tape 51 by the solar battery cells 10, so that the solar battery cells 10 are bonded to the belt during transportation. The wire 15 does not shift. Here, the configuration in the heating furnace 62 is such that the adsorption device 56 does not attract the band-shaped bonding wires 15 in order not to cause an obstacle to subsequent engineering, if directly

28 201139021 吸引帶狀接合導線15的話， 熱爐62内的熱炫化、被吸引 可狀接合導線15的焊埸因加 依此’利用在加熱爐62内的吸附裝置％於帶狀接合 導線15的兩側將太陽電池單元1〇吸附於搬送帶$卜搬： 帶51可在帶狀接合導線15與太陽電池單元1〇定位的狀 態搬送。X ’可防止在帶狀接合導線15形成帶狀接合導 線吸附孔53的痕跡。又，在加熱爐62 π，吸附裝置％ 也可以係在帶狀接合導、線15的桿埸即將開赌化前，或 係在帶狀接合導線15的焊埸開始炫化前，吸引帶狀接合 導線15。藉由搬送帶51，可確實防止帶狀接合導線15 ^ 太陽電池單元10在搬送中的偏移。 · 〃 又，在上述說明中，係針對吸附褒置56藉由各帶狀 接合導線吸附孔53則丨搬送面52所載置的各帶狀接合導 線15而說明’但不限於此情況，亦可係未吸引的構成。 (預熱部60) 預熱部60的工程係進行太陽電池單元1〇及帶狀接合 導線15的預備加熱。 σ 如圖2所示，預熱部6 0在加熱爐6 2内沿著搬送帶$ i 的搬送方向設有複數加熱器63。本實施態樣的預熱部6〇 係由三個加熱器63構成’但其數量可對應太陽電池單元 H)的種類等而適當地變更。各加熱器63 {列如為熱風加熱 器或紅外線燈泡（InfmrdRay lamp)等。又，各加熱器 除了直接將搬送帶51搬送的太陽電池單元1〇加熱之外， 還將加熱爐62内的空氣加熱，使得太陽電池單元1〇整體 29 201139021 均一加熱。 更進一步，各加熱器63係由溫度控制裝置61被控制 加熱溫度。具體地，加熱爐62内設有圖未顯示的複數溫 度檢測裝置’其接近搬送帶51的位置沿著搬送方向設置。 而溫度控制裝置61根據溫度檢測裝置控制溫度相當於接 近焊接部70之加熱器63的高溫。因此，在預熱部6〇的 加熱爐62内，從加熱爐62的入口 64越接近焊接部而空 氣的溫度變得越高。 在此，參照圖12，說明預熱部60中的太陽電池單元 10整體及帶狀接合導線15的溫度變化。圖12為顯示太陽 電池單元整體及帶狀接合導線之溫度變化的圖表，橫軸為 顯示焊接裝置中太陽電池單元及帶狀接合導線被搬送的 位置，縱軸為顯示太陽電池單元及帶狀接合導線的溫度。 又，圖12 _表±方對應橫軸及被搬送的太陽電池單元 及帶狀接合導線的位置，顯示焊接裝置1〇〇的一部分。又， 以實線表示太陽電池單A 1G整體的溫度變化，而以虛線 表示帶狀接合導線15的溫度變化。 _如圖12所示，#由被控制溫度的加熱器63,太陽電 池單7G 10整體及帶狀接合導線15在難部⑼係越接近 焊接部70而溫度越高。此時，溫度控制裝置61使得溫度 緩慢地加熱而控制，俾使太陽電池單元1()不產生龜裂。 又’溫度控制裝£ 61控制溫度，俾使位於焊接部70 當前的太陽電池單A 1G的溫度在焊接㈣以下，較佳係 加熱至比焊接㈣還低的溫度。在圖12所示的例子中 201139021 =妾T為20。。。的情況下’溫度控制裳置61將太陽電 /早兀10加熱至約略15〇。〇左右。又，焊接 合 ”的焊劑種類而改變，因此，溫度控制裝置’：:對應 知劑種類而控制加熱爐62内的溫度，即加熱器63的溫^ 依此’在預熱部60將太陽電池單元10緩慢加熱。 f預熱部60將位於焊接部70當前的太陽電池單元10加 …至焊接熔點以下的溫度。因此’使得太陽電池單元 不會產生龜裂等損壞。又，在接下來的焊接部％，由於已 預先在預熱部6G加熱太陽電池單元1G及帶狀接合導線 ^因此’能夠使得帶狀接合導線15與表側連續電極u 合的重合部分及帶狀接合導線15與裏側連續電極12重 合的重合部分之焊煬的熔化時間縮短。 —又’針對在預熱部6㈣各加熱器63加熱太陽電池單 兀10及帶狀接合導線15而說明，但亦可適當地將加熱器 设置於搬送帶51與吸附裝置56之間的空間。在此情況 下，藉由適當設置於搬送帶51與吸附裝置％之間的空間 的加熱器’被加熱的搬送帶51加熱太陽電池單元1〇及帶 狀接合導線15，因此，更可提升預熱效率。 (焊接部70) 桿接部7G的進行工程係太陽電池單元10及帶狀接合 導線15的焊接。 如圖2所不’焊接部7〇具有帶狀接合導線加熱裝置 7卜帶狀接合導線加熱裝置71係由加熱頭⑽叩㈣ 72及圖未顯示的加熱頭升降裝置等構成。加熱頭”將在 201139021 加熱爐内的太陽電池單元10與帶狀接合導線15重合的重 合部分加熱。加熱頭升降裝置使得加熱頭72上下升降。 在此，參照圖10及圖11 ,說明加熱頭72。圖1〇係切割 加熱頭72 —部分的斜視圖。圖u⑷係將圖1〇所示的IV_IV 線垂直切割而從箭頭方向觀看的剖面圖。圖（b)係將圖 10所示的V-V線垂直切割而從箭頭方向觀看的剖面圖。 如圖10及圖11(b)所示，加熱頭72沿著搬送帶51的 搬送方向，即，帶狀接合導線15的長邊方向，設有二個 平行的加熱塊（heating block) 73以作為加熱體。二個加 熱塊73間隔隔開於搬送帶51的寬度方向。又，二個加熱 塊73之間的距離與在圖1 a中說明的二個帶狀接合導線工$ 的中心之間的距離W相同。各加熱塊73沿著長邊方向埋 設有二個護套加熱器（sheath heater) 74以作為熱導體。 護套加熱器74的中心具有加工為螺旋狀（c〇il)的鎳鉻合 金線（nichrome )、填充於鎳鉻合金線周圍的氧化鎂 (magnesium oxide )等絕緣材以及覆蓋絕緣材整個圓周邊 的護套（sheath)。又，熱導體並不限於護套加熱器％，只 要係可加熱加熱塊73及稍後說明的押壓子75之任何一種 元件即可。 各加熱塊73的二個護套加熱器74之間沿著搬送方向 設有複數押壓子75，其分別從上方押壓各帶狀接合導線 15。在本實施態樣的加熱塊73係由七個押壓子75構成， 但其數量係可對應太陽電池單it 1G的大小等而適當變 更。各押壓子75形成於銷狀。又，各押壓子乃係藉由推 32 201139021 動發條76而推動於下方。因此，利用各押Μ子75從上方 押壓帶狀接合導線15日夺，各押壓子75抵抗推動發條％ 而緩緩上升’各押虔子75全部押壓帶狀接合導線Η，且 適當調整對帶狀接合導線15的押壓力。&，各押壓子75 係位於被護套加熱ϋ74加熱的加熱塊73 Μ，因此，各押 塵子75本身被加熱至高溫。 一在此，濩套加熱器74係由溫度控制裝置6丨控制。具 ，地，接近加熱塊73或押壓子75的位置設有圖未顯示的 咖度祆測裝置。溫度控制裝f 61根據溫度檢測裝置將加 …I 73及押壓子75控制在比焊接溶點還高的溫度，且 制在一定的溫度。 工 接著’參照圖11⑷、⑻’說明帶狀接合導線加熱裝 置71將太陽電池單元1G的表側連續電極u與裏側連^ 電極12焊接的動作。 ^ 首先’搬送帶51間歇搬送被預熱部6〇加熱的太陽電 SC:圖11⑷所示’將太陽電池單元1〇搬送至加 ，、、 的下側。此時，加熱塊73及押壓子乃藉 置61且藉由護套加熱器74加熱至比焊狀心 向的>JHt度。 按者 如圖U(a)及圖11的二點璲線所示，帶妝垃A ，線加熱裝置71的加熱頭升降裝置使得加熱頭 ^ =陽ί力:!塊73的複數押壓子75的下端分別從上側押 各早’10上所配置的各帶狀接合導線15。此時， 曱乂子75抵抗推動發條76的推動，而移動至上方， 33 201139021 此，可防止因押壓帶狀接合導線15的押壓力太強而導致 太陽電池單元10的損壞。 又，溫度控制裝置61將加熱塊73及押壓子75加熱 至比焊接熔點還高的溫度。因此，對應加熱塊73及押壓 子75的下降，使得帶狀接合導線15的溫度上升。更進一 步，利用加熱塊73及押壓子75接近帶狀接合導線15，帶 狀接合導線15與太陽電池單元10的表側連續電極11的 重合部分之溫度變得比焊接熔點還高，進而使焊煬完全地 熔化。更進一步，加熱塊73及押壓子75的熱傳導至太陽 電池單元10的下側，太陽電池單元10的裏側連續電極12 與帶狀接合導線15的重合部分的焊煬也同樣地熔化。又， 此時，複數押壓子7 5相對太陽電池單元10押壓帶狀接合 導線15，因此，使得帶狀接合導線15與太陽電池單元10 確實地接觸，進而能夠確實地進行焊接。又，帶狀接合導 線15與太陽電池單元10的重合部分中，並不限於押壓子 75接觸的部分，藉由押壓子75及加熱塊73的輻射熱，沿 著帶狀接合導線15的長邊方向同樣地使得帶狀接合導線 15與各連續電極的焊煬熔化。因此，焊接係遍及帶狀接合 導線15全長而進行。 又，加熱塊73或押壓子75係與帶狀接合導線15的 長邊方向一致而設置。因此，帶狀接合導線加熱裝置71 係將帶狀接合導線15及太陽電池單元10塗佈有焊煬之處 (太陽電池單元10的各連續電極11、12)局部加熱。即， 未塗佈有焊煬的太陽電池單元10的其他部分不進行加 34 201139021 熱，僅使太陽電池單元10的各連續電極n、12部分的溫 度上升。 在此，參照圖12，說明焊接部70中的太陽電池單元 1〇整體及帶狀接合導線15的溫度變化。於圖12中，以實 線表示太陽電池單元10整體的溫度變化，以虛線表示帶 狀接合導線15的溫度變化。 以圖12的虛線表示帶狀接合導線15的溫度，帶狀接 合導線15的溫度在焊接部7〇中，藉由被控制溫度的押壓 子75及加熱塊73的接近，溫度上升至比焊接熔點還高的 溫度。此時，太陽電池單元1〇及帶狀接合導線15被預熱 部60預先加熱，因此，能夠使得溫度上升至比焊接熔點 還高的時間縮短。目12所示的例子中，係使得帶狀接合 導線15的溫度從150°c上升至2〇(rc。 另一方面，以圖12的實線表示太陽電池單元1〇整體 的溫度，太陽電池單元1〇整體的溫度在焊接部7〇中，只 有在焊接塗佈處局部加熱，太陽電池單元1〇其他部分不' 進行加熱，因此，幾乎沒有變化。以圖12所示的例子， 太陽電池單元10整體的溫度維持在15(TC。因此，可防止 太陽電池單A 10 f體加熱至高溫而導致太陽電池單元 的損壞。 ‘依此，在焊接部70使得太陽電池單元1〇與帶狀接合 導線15的重合部分加熱至比焊接炫點還高的溫度時，係 從預熱狀態加熱，因此，能夠縮短加熱至比烊接溶點還高 之溫度的時間’進而可提高焊接的效率。此時，在谭接部 35 201139021 70太陽電池單元7〇不整體加熱，而係使得太陽電池單 疋10與帶狀接合導、線15的重合部分局部加熱，因此，可 防止太陽電池單元10產生損壞。依據本實施態樣的焊接 部70’可使得太陽電池單元1〇及帶狀接合導線15在三秒 以下的短時間内完成焊接。 ,又，如圖11(b)所示，吸附裝置56在下侧的帶狀接合 導線I5的兩側使得太陽電池單幻G吸附在搬送帶^，因 此’ 了側的帶狀接合導線15與太陽電池單幻^處於定位 的狀態。又’上側的帶狀接合導線15藉由下-個焊接、 相鄰的太陽電池單元10，而其後側定位。因此，上側的帶 狀接合導線15也相對太陽電池單元1〇而處於定位的狀 態。因此，帶狀接合導線加熱裝置71即使藉由押壓子乃 押壓上側的帶狀接合導線15，亦可使各帶狀接合導線b 與太陽電池單元10之間不會產生偏移而進行焊接。 又，在上述的焊接部70中，係針對採用押壓子75 — 邊加熱帶狀接合導線15 —邊押壓的情況作說明。然而， 不限於此情況，亦可係省略押壓子75，加熱塊73不與帶 狀接合導線15接觸而加熱，或者亦可係省略押壓子， 加熱塊73直接押壓帶狀接合導線】5而加熱。更進一步， 對應太陽電池單元10大小的數量而配置的押壓子75 ^可 主要係將太陽電池單元10與帶狀接合導線〗5的重合部分 局部加熱，只要係可將太陽電池單元1〇與帶狀接合導線 15的重合部分局部加熱的任何構成皆可。 在焊接部70焊接後，帶狀接合導線加熱裝置71使得 36 201139021 加熱頭72上升，準備下— 單元10的焊接。 個帶狀接合導線15與太陽 電池 (冷卻部80) 冷卻部8 0進行的了 ^ . 辁係將已焊接的太陽電池單元1〇 與f狀接合導線15冷卻。 S1如圖2所7F，冷卻部80具有冷卻裝置81。冷卻裝置 81將從加熱爐62間歇搬氺沾上址雨β 搬來的太％電池皁元10及帶狀接合 導線15以冷風噴吹而冷卻。 危y t 卩冷部裝置81所喷吹的冷風溫 =由溫度控制震置61控制。在此，冷卻裝置Μ亦可喷 :人至溫的空氣。又’更可嘴吹〇°C以下的冷風。又，於冷 Ρ-Μ0巾’ /皿度控制裝£ 61彳對應太陽電池單元⑺的 種類等而適當變更喷吹冷風的溫度。 在此’參照圖12 ’說明冷卻部8G中的太陽電池單元 ίο整體及帶狀接合導線15的溫度變化。於圖12中，以實 線表示太陽電池料1G整體的溫錢化，以虛線表示帶 狀接合導線15的溫度變化。 以圖12的虛線表示的帶狀接合導線15之溫度以及以 實線表示的太陽電池單元20整體之溫度在冷卻部8〇急速 下降。因此，可將在太陽電池單元1〇與帶狀接合導線的 重合部分所熔化的焊煬以稍後說明的構造固化。 接著，參照圖13，說明在冷卻部80將在太陽電池單 元10與帶狀接合導線15的重合部分所熔化的焊埸冷卻之 情況。 冷卻裝置81將被搬送的帶狀接合導線15從長邊方向 37 201139021 的一邊端部依序冷卻，藉此，使得 使侍向熱傳導的帶狀接 線15内的導線18於箭頭E方向熱收縮。此時，如圖13(a) :示，導線18在焊踢16内可-邊移動於炫化狀態的_ (以下稱之熔化焊煬17) —邊收始 m L 勿 v ^ 逻收鈿。因此，在導線18充 分熱收縮後熔化焊煬17固化，固仆 LO u化之後，在導線18盥焊 埸10之間，沿著帶狀接合導線H 、 的長邊方向的應力不作 用’因此，可使得太陽電池單幻(^管曲減少。 又’自然冷卻的情況下，係帶狀接合導線15從長邊 方向的兩端部往中央部冷卻。此時，#由帶狀接合導線^ 緩慢地冷卻，導線18的熱收縮及炫化焊踢Η的固化不合 受到熱傳導差異的影響而同時進行。因此，如圖13_ 不’導線收縮於中央側’即收縮於箭頭F方向，而太 陽電池單元Π)及帶狀接合導線15内的銅受到熱膨服係數 差異的影響’使得太陽電池單元1 〇彎曲。 依此將焊接的太陽電池單元10及帶狀接合導線15冷 卻，與自然冷卻的情況相比，可使因溶化焊踢17固化^ 導線18熱收縮而導致太陽電池單幻〇的弯曲減輕。 接著，冷卻的太陽電池單元係以列狀連續的串列 (string)形成。串列係連續的複數列，以作為矩陣形狀的 太陽電池聽㈣成。域f池面減移駐圖未顯示的 積層程序，以與玻璃板等其他元件積層。 B以上，依據上述的焊接裝置100，可在短時間焊接太 陽電池單元10及帶狀接合導線15，因此，提升生產效率。 又，依據上述的焊接裝置1〇〇,可使太陽電池單元1〇不會 38 201139021 產生損壞，因此，可大幅提升生產良率。 又’在上述焊接裝置100中，係針對藉由二個平行的 π狀接5導線15連接太陽電池單幻Q的情況作說明，但 非限於此情况’亦可係藉由—個或三個以上的帶狀接合導 線連接太陽電池單it i〇m兄下，帶狀接合導線供給 部30亦可設置對應帶狀接合導線之數量的轉盤32、帶狀 接合導線保持器35、上型37的突條部38及下型42的突 條部43。又，搬送部5〇亦可設置帶狀接合導線吸引孔57 及單兀吸引孔58。又，焊接部70亦可對應帶狀接合導線 的數1而設置加熱塊73。 在此’於上述焊接裝置100中，例如太陽電池單元10 與帶狀接合導線15不會偏移，而係主要的課題為解決在 疋位狀態下搬送的發明。在此種情況下，焊接裝置丨〇〇之 構成係於太陽電池單元與帶狀接合導線15重合的狀態， 不限於具有將太陽電池單元及帶狀接合導線加熱至焊接 溶點以下溫度的預熱部及將太陽電池單元及帶狀接合導 線的重合部分加熱至比焊接熔點還高的溫度的焊接部。 【圖式簡單說明】 圖1A為顯示太陽電池單元及帶狀接合導線之構成的 平面圖； 圖1B為顯示太陽電池單元及帶狀接合導線之構成的 側面圖； 圖1C為顯示太陽電池單元之構成的圖； 39 201139021 圖2為顯示焊接裝置之概略構成的圖； 圖3為顯示帶狀接合導線載入裝置之構成的斜視圖； 圖4係從箭頭A方向觀看帶狀接合導線載入裝置的 圖； 圖5A係從箭頭b方向觀看帶狀接合導線載入裝置的 圖； 圖5B係從箭頭c方向觀看搬送帶的圖； 圖6A係帶狀接合導線載入裝置成形的帶狀接合導線 的側面圖； 圖6B係帶狀接合導線另一態樣的側面圖； 圖6C為最後載置的帶狀接合導線之中較短規格之帶 狀接合導線的側面圖； 圖7為顯示最初的帶狀接合導線載置於搬送帶之狀態 的圖； 圖8為顯示太陽電池單元載置於搬送帶之狀態的圖； 圖9為顯示载置下一個（或最後的）帶狀接合導線之 狀態的圖； 圖10為切割加熱頭一部分的斜視圖； 圖11為顯示加熱頭之構成的圖； 圖12為顯示本實施態樣的太陽電池單元整體及帶狀 接合導線之溫度變化的圖； 能二1示帶狀接合導線的導線在冷卻時的收縮狀 悲的圖，Μ及 圖14為顯示習知的焊接裝置及習知的焊接裝置中的 201139021 太陽電池單元整體及帶狀接合導線之溫度變化的圖。 【主要元件符號說明】 ίο:太陽電池單元 11 :表側連續電極 12 :裏側連續電極 13 :指狀部 15、15a、15b、15c :帶狀接合導線 16 :焊煬 17 :熔化焊煬 18 :導線 20 :太陽電池單元供給部 21 :單元載入裝置 22 :存放台 30 :帶狀接合導線供給部 32 :捲盤 33 :帶狀接合導線載入裝置 35 :帶狀接合導線保持器 36 :帶狀接合導線切割器 37 :上型 38、43 :突條部 39 :成形部 40、45 :段部 41 :吸附孔 41 201139021 42 ： 下型 44 ： 凹溝部 48 ： 加熱子 50 ： 搬送部 51 : 搬送帶 52 ： 搬送面 53 ： 帶狀接合導線吸附孔 54 ： 單元吸附孔 55a、55b :搬送滾輪 56 :吸附裝置 57 :帶狀接合導線吸引孔 58 :單元吸引孔 59a、59b :暫時安裝位置 60 :預熱部 61 :溫度控制裝置 62 :加熱爐 63 :加熱器 64 :入口 70 :焊接部 71 :帶狀接合導線加熱裝置 72 :加熱頭 73 :加熱塊 74 :護套加熱器 75 :押壓子 42 201139021 76 :推動發條 80 :冷卻部 81 :冷卻裝置 100 :焊接裝置 200 :太陽電池模組之製造裝置 201 :圍板 202 :加熱塊 203 :冷卻塊 Fr :前側28 201139021 When the strip-shaped bonding wire 15 is attracted, the heat-dampening in the hot-spot 62 and the welding squeezing of the attractable wire 15 are added to the band-shaped bonding wire 15 by the adsorption device used in the heating furnace 62. Both sides of the solar cell unit 1 are adsorbed to the transfer belt. The belt 51 can be transported in a state where the strip-shaped bonding wire 15 and the solar battery unit 1 are positioned. X ′ prevents the formation of the strip-shaped bonding wire adsorption holes 53 in the strip-shaped bonding wires 15 . Further, in the heating furnace 62 π, the % of the adsorption device may be attached to the belt-shaped joint guide wire 15 before the smashing of the wire, or before the welding of the band-shaped bonding wire 15 starts to smash, and the tape is attracted. The wire 15 is bonded. By the conveyance belt 51, it is possible to surely prevent the belt-shaped bonding wires 15 from shifting during the conveyance of the solar battery cells 10. In addition, in the above description, the strip-shaped bonding wires 15 placed on the transfer surface 52 by the respective strip-shaped bonding wire suction holes 53 are described as 'but not limited to this case. Can be an unattractive composition. (Preheating section 60) The engineering of the preheating section 60 performs preliminary heating of the solar cell unit 1A and the strip-shaped bonding wires 15. σ As shown in Fig. 2, the preheating unit 60 is provided with a plurality of heaters 63 in the conveying direction of the conveying belt $i in the heating furnace 6 2 . The preheating unit 6 of the present embodiment is appropriately changed by the three heaters 63, but the number thereof can be changed according to the type of the solar battery unit H. Each heater 63 {column is a hot air heater or an infrared light bulb (Infmrd Ray lamp) or the like. Further, each of the heaters heats the solar battery unit 1 directly conveyed by the conveyor belt 51, and heats the air in the heating furnace 62 so that the solar battery unit 1 is uniformly heated. Further, each of the heaters 63 is controlled by the temperature control means 61 to heat the temperature. Specifically, the heating furnace 62 is provided with a plurality of temperature detecting means "not shown", and the position close to the conveying belt 51 is set along the conveying direction. On the other hand, the temperature control means 61 controls the temperature corresponding to the temperature of the heater 63 adjacent to the welded portion 70 in accordance with the temperature detecting means. Therefore, in the heating furnace 62 of the preheating portion 6A, the temperature of the air becomes higher as it approaches the welded portion from the inlet 64 of the heating furnace 62. Here, the temperature change of the entire solar battery cell 10 and the band-shaped bonding wire 15 in the preheating portion 60 will be described with reference to Fig. 12 . Fig. 12 is a graph showing changes in temperature of the entire solar cell unit and the strip-shaped bonding wires, wherein the horizontal axis indicates the position at which the solar cell unit and the strip-shaped bonding wire are conveyed, and the vertical axis indicates the solar cell unit and the ribbon bonding. The temperature of the wire. Further, in Fig. 12, the table ± side corresponds to the horizontal axis and the positions of the transported solar battery cells and the strip-shaped bonding wires, and a part of the welding device 1 is displayed. Further, the temperature change of the entire solar cell single A 1G is indicated by a solid line, and the temperature change of the strip-shaped bonding wire 15 is indicated by a broken line. As shown in Fig. 12, # is the temperature of the heater 63, and the solar cell unit 7G 10 as a whole and the strip-shaped bonding wire 15 are closer to the soldering portion 70 in the difficult portion (9), and the temperature is higher. At this time, the temperature control means 61 causes the temperature to be slowly heated and controlled so that the solar battery unit 1 () does not generate cracks. Further, the temperature control device controls the temperature so that the temperature of the solar cell single A 1G currently located in the soldering portion 70 is lower than the solder (four), and is preferably heated to a temperature lower than the solder (four). In the example shown in Fig. 12, 201139021 = 妾T is 20. . . In the case of 'temperature control skirt 61, the solar power / early 兀 10 is heated to about 15 〇. Hey around. Further, since the type of the flux is changed, the temperature control device ': controls the temperature in the heating furnace 62 in accordance with the type of the agent, that is, the temperature of the heater 63 is based on the solar cell in the preheating portion 60. The unit 10 is slowly heated. The preheating portion 60 applies the current solar cell unit 10 located in the soldering portion 70 to a temperature below the melting point of the solder. Therefore, the solar cell unit is not damaged by cracks or the like. Since the soldering portion % has previously heated the solar cell unit 1G and the strip-shaped bonding wires in the preheating portion 6G, the overlapping portion of the strip-shaped bonding wires 15 and the front-side continuous electrodes and the strip-shaped bonding wires 15 and the back side can be continuously continuous. The melting time of the weld bead of the overlapping portion where the electrodes 12 are overlapped is shortened. - The description is directed to heating the solar cell unit 10 and the strip-shaped bonding wires 15 in the heaters 63 of the preheating portion 6 (four), but the heater may be appropriately used. The space provided between the conveyor belt 51 and the suction device 56. In this case, the conveyor belt 51 heated by the heater 'in the space between the conveyor belt 51 and the suction device % is heated. Since the hot solar battery unit 1 and the band-shaped bonding wire 15 are used, the preheating efficiency can be improved. (Welding portion 70) The welding of the solar cell unit 10 and the band-shaped bonding wire 15 of the bonding portion 7G is performed. The two non-welding portions 7A have a strip-shaped joint wire heating device 7. The strip-shaped joint wire heating device 71 is composed of a heating head (10) 叩 (four) 72 and a heating head lifting device not shown. The heating head will be in 201139021 The overlapping portion of the solar cell unit 10 in the heating furnace and the strip-shaped bonding wire 15 is heated. The heating head lifting device causes the heating head 72 to move up and down. Here, the heating head 72 will be described with reference to Figs. 10 and 11 . Figure 1 is a perspective view of a portion of the heating head 72. Figure u(4) is a cross-sectional view taken from the direction of the arrow by cutting the IV_IV line shown in Figure 1A vertically. Fig. (b) is a cross-sectional view showing the V-V line shown in Fig. 10 cut perpendicularly and viewed from the direction of the arrow. As shown in FIGS. 10 and 11(b), the heating head 72 is provided with two parallel heating blocks 73 along the transport direction of the transport belt 51, that is, the longitudinal direction of the strip-shaped bonding wires 15. As a heating body. The two heating blocks 73 are spaced apart from each other in the width direction of the conveyor belt 51. Further, the distance between the two heating blocks 73 is the same as the distance W between the centers of the two strip-shaped bonding wires $ illustrated in Fig. 1a. Each of the heating blocks 73 is embedded with two sheath heaters 74 along the longitudinal direction as a heat conductor. The sheath heater 74 has a nickel-chromium alloy wire (nichrome) processed in a spiral shape, an insulating material such as magnesium oxide filled around the nichrome wire, and the entire circumference of the insulating material. Sheath. Further, the heat conductor is not limited to the sheath heater %, and it is only necessary to heat any of the heating block 73 and the pressing member 75 described later. A plurality of pressing pins 75 are provided between the two sheath heaters 74 of the respective heating blocks 73 in the conveying direction, and the respective band-shaped bonding wires 15 are pressed from above. The heating block 73 of the present embodiment is composed of seven pressing members 75, but the number thereof can be appropriately changed in accordance with the size of the solar cell single it 1G or the like. Each of the pressing members 75 is formed in a pin shape. In addition, each of the pressures is pushed downwards by pushing 32 201139021. Therefore, each of the scorpions 75 is pressed from above to press the ribbon-shaped bonding wires for 15 days, and each of the pressing nippers 75 resists the pulling of the springs and slowly rises. The pressing force to the band-shaped bonding wire 15 is appropriately adjusted. &, each of the pressing members 75 is located in the heating block 73 加热 heated by the sheath heating crucible 74, and therefore, each of the dusting sub-segments 75 is heated to a high temperature. Here, the jacket heater 74 is controlled by the temperature control device 6丨. With the ground, the position near the heating block 73 or the pressing pin 75 is provided with a coffee measuring device not shown. The temperature control unit f 61 controls the addition of the I I and the pressing force 75 to a temperature higher than the welding melting point according to the temperature detecting means, and is made at a certain temperature. Next, the operation of the strip-shaped bonding wire heating device 71 to weld the front side continuous electrode u of the solar battery cell 1G to the back side connecting electrode 12 will be described with reference to Figs. 11 (4) and (8)'. ^ First, the conveyor belt 51 intermittently conveys the solar electric power heated by the preheating unit 6〇. SC: The solar battery unit 1 is transported to the lower side of the addition and the side as shown in Fig. 11 (4). At this time, the heating block 73 and the pressing force are borrowed 61 and heated by the sheath heater 74 to > JHt degrees than the weld core. As shown in Fig. U(a) and the two-point line of Fig. 11, the heating head lifting device with the makeup A and the line heating device 71 makes the heating head ^=Yangli force: the plural pressure of the block 73 The lower end of the 75 is respectively attached to each of the strip-shaped bonding wires 15 disposed at the early '10'. At this time, the forceps 75 resists the pushing of the spring 63 and moves to the upper side, 33 201139021, thereby preventing the damage of the solar battery unit 10 due to the too strong pressing force of the pressure-bonding wire 15 . Further, the temperature control device 61 heats the heating block 73 and the pressing member 75 to a temperature higher than the melting point of the welding. Therefore, the temperature of the band-shaped bonding wire 15 rises in response to the lowering of the heating block 73 and the pressing force 75. Further, the heating block 73 and the pressing member 75 are brought close to the strip-shaped bonding wire 15, and the temperature of the overlapping portion of the strip-shaped bonding wire 15 and the front side continuous electrode 11 of the solar cell unit 10 becomes higher than the melting point of the solder, thereby further welding炀 completely melts. Further, the heat of the heating block 73 and the pressing member 75 is conducted to the lower side of the solar battery cell 10, and the welding bead of the overlapping portion of the inner side continuous electrode 12 of the solar battery cell 10 and the band-shaped bonding wire 15 is also melted in the same manner. Further, at this time, the plurality of pressing members 75 press the belt-like bonding wires 15 with respect to the solar battery cells 10, so that the band-shaped bonding wires 15 are surely brought into contact with the solar battery cells 10, and the welding can be surely performed. Further, in the overlapping portion of the strip-shaped bonding wire 15 and the solar battery cell 10, it is not limited to the portion where the pressing member 75 is in contact with, and the radiant heat of the pressing pin 75 and the heating block 73 is along the length of the band-shaped bonding wire 15. The side direction also causes the strip-shaped bonding wires 15 to be melted with the pads of the respective continuous electrodes. Therefore, the soldering is performed over the entire length of the strip-shaped bonding wires 15. Further, the heating block 73 or the pressing pin 75 is provided to coincide with the longitudinal direction of the band-shaped bonding wire 15. Therefore, the strip-shaped bonding wire heating device 71 locally heats the strip-shaped bonding wires 15 and the solar cell unit 10 to which the solder bumps are applied (the respective continuous electrodes 11, 12 of the solar cell unit 10). That is, the other portion of the solar cell unit 10 to which the solder bump is not applied is not heated, and only the temperature of each of the continuous electrodes n and 12 of the solar cell 10 is increased. Here, the temperature change of the entire solar cell unit 1 and the strip-shaped bonding wire 15 in the welded portion 70 will be described with reference to Fig. 12 . In Fig. 12, the temperature change of the entire solar cell unit 10 is indicated by a solid line, and the temperature change of the strip-shaped bonding wire 15 is indicated by a broken line. The temperature of the strip-shaped bonding wire 15 is indicated by a broken line in Fig. 12, and the temperature of the band-shaped bonding wire 15 is in the welded portion 7〇, and the temperature rises to the specific welding by the proximity of the pressed pressure 75 and the heating block 73 of the controlled temperature. The temperature at which the melting point is also high. At this time, since the solar cell unit 1 and the strip-shaped bonding wire 15 are previously heated by the preheating portion 60, the temperature can be increased to a time higher than the melting point of the solder. In the example shown in the item 12, the temperature of the band-shaped bonding wire 15 is raised from 150 ° C to 2 〇 (rc. On the other hand, the temperature of the entire solar cell unit 1 表示 is indicated by the solid line in Fig. 12, and the solar cell The temperature of the unit 1〇 is in the welded portion 7〇, and only local heating is performed at the welding coating, and the other portions of the solar battery unit 1 are not heated, and therefore, there is almost no change. In the example shown in Fig. 12, the solar battery The temperature of the unit 10 as a whole is maintained at 15 (TC. Therefore, it is possible to prevent the solar cell single A 10 f body from being heated to a high temperature and causing damage to the solar cell unit. ' Accordingly, the solar cell unit 1 and the strip are formed in the soldering portion 70. When the overlapping portion of the bonding wire 15 is heated to a temperature higher than the soldering point, it is heated from the preheating state, so that the time for heating to a temperature higher than the melting point can be shortened', and the efficiency of welding can be improved. At this time, the solar cell unit 7 is not heated integrally in the tandem portion 35 201139021 70, but the solar cell unit 10 and the band-shaped bonding guide and the overlapping portion of the line 15 are locally heated, thereby preventing solar power. The pool unit 10 is damaged. The soldering portion 70' according to this embodiment allows the solar cell unit 1 and the strip-shaped bonding wires 15 to be soldered in a short time of three seconds or less. Further, as shown in Fig. 11(b) It is to be noted that the adsorption device 56 causes the solar cell single-magic G to be adsorbed on the transport belt on both sides of the lower band-shaped bonding wire I5, so that the band-shaped bonding wire 15 on the side and the solar cell are in a state of being positioned. The upper strip-shaped bonding wire 15 is positioned by the lower-welding, adjacent solar cell unit 10, and its rear side is positioned. Therefore, the upper band-shaped bonding wire 15 is also positioned relative to the solar cell unit 1 Therefore, the strip-shaped bonding wire heating device 71 can perform the offset between the respective band-shaped bonding wires b and the solar battery cells 10 even if the band-shaped bonding wires 15 on the upper side are pressed by the pressing force. Further, in the above-described welded portion 70, the case where the strip-shaped bonding wire 15 is heated while pressing the pressing member 75 is described. However, the present invention is not limited to this case, and the pressing force may be omitted. 75, the heating block 73 does not The strip-shaped bonding wires 15 are heated by contact, or may be omitted, and the heating block 73 directly presses the strip-shaped bonding wires 5 to be heated. Further, the pressing force is arranged corresponding to the number of the solar battery cells 10 75 ^ may mainly locally heat the overlapping portion of the solar cell unit 10 and the strip-shaped bonding wire 5 as long as it can locally heat the overlapping portion of the solar cell unit 1 and the strip-shaped bonding wire 15. After the welding portion 70 is welded, the strip-shaped bonding wire heating device 71 causes the 36 201139021 heating head 72 to rise, and prepares the welding of the lower unit 10. The strip-shaped bonding wires 15 and the solar cell (cooling portion 80) are cooled by the cooling portion 80. ^ . The tether cools the welded solar cell unit 1 and the f-shaped bonding wire 15 . S1 is as shown in Fig. 2 and 7F, and the cooling unit 80 has a cooling device 81. The cooling device 81 cools the solar cell soap element 10 and the band-shaped bonding wire 15 which are intermittently transferred from the heating furnace 62 and sucked with the address rain β by cold air blowing. The cold air temperature blown by the critical unit 81 is controlled by the temperature control 61. Here, the cooling device Μ can also spray: human to warm air. Also, it can blow the cold air below °C. In addition, the temperature of the cold air to be blown is appropriately changed in accordance with the type of the solar battery unit (7), etc., in the case of the type of the solar battery unit (7). Here, the temperature change of the entire solar battery cell ίο and the strip-shaped bonding wire 15 in the cooling portion 8G will be described with reference to Fig. 12'. In Fig. 12, the temperature of the entire solar cell material 1G is indicated by a solid line, and the temperature change of the band-shaped bonding wire 15 is indicated by a broken line. The temperature of the strip-shaped bonding wire 15 indicated by the broken line in Fig. 12 and the temperature of the entire solar battery cell 20 indicated by the solid line rapidly decrease in the cooling portion 8A. Therefore, the soldering iron melted at the overlapping portion of the solar cell unit 1 and the strip-shaped bonding wires can be cured in a configuration to be described later. Next, a case where the soldering portion melted at the overlapping portion of the solar cell unit 10 and the strip-shaped bonding wire 15 in the cooling portion 80 is cooled will be described with reference to Fig. 13 . The cooling device 81 sequentially cools the belt-shaped bonding wires 15 to be conveyed from one end portion of the longitudinal direction 37 201139021, whereby the wires 18 in the strip-shaped wires 15 for heat conduction are thermally contracted in the direction of the arrow E. At this time, as shown in Fig. 13 (a): the wire 18 is movable in the welding kick 16 to the sleek state _ (hereinafter referred to as the molten solder 炀 17) - while the m L is not v ^ 钿 钿. Therefore, after the wire 18 is sufficiently heat-shrinked, the molten solder fillet 17 is solidified, and after the solid wire is turned on, the stress in the longitudinal direction of the strip-shaped bonding wire H, does not act between the wire bonds 10 of the wire 18. In the case of natural cooling, the strap-shaped bonding wires 15 are cooled from the both end portions in the longitudinal direction toward the central portion. At this time, # is a band-shaped bonding wire ^ Slowly cooling, the heat shrinkage of the wire 18 and the curing of the shimmering butt joint are not affected by the difference in heat conduction at the same time. Therefore, as shown in Fig. 13_ not 'the wire shrinks to the center side', it shrinks in the direction of the arrow F, and the solar cell The unit Π) and the copper in the strip-shaped bonding wire 15 are affected by the difference in the coefficient of thermal expansion, which causes the solar cell unit 1 to bend. Accordingly, the welded solar battery cells 10 and the band-shaped bonding wires 15 are cooled, and the bending of the solar cell alone can be reduced by the heat-shrinking of the melted welding wires 17 as compared with the case of natural cooling. Next, the cooled solar cells are formed in a series of continuous strings. The tandem series is a continuous plurality of columns, as a matrix of solar cells is heard (four). The domain f pool surface subtracts the stacking program not shown in the map to laminate with other components such as glass plates. B or more, according to the welding device 100 described above, the solar battery unit 10 and the band-shaped bonding wire 15 can be welded in a short time, thereby improving production efficiency. Further, according to the welding device 1 described above, the solar battery unit 1 can be damaged, so that the production yield can be greatly improved. Further, in the above-described welding apparatus 100, the case where the solar cell single magic Q is connected by two parallel π-shaped 5 wires 15 is described, but it is not limited to this case 'may be by one or three The above-mentioned strip-shaped bonding wires are connected to the solar cell, and the strip-shaped bonding wire supply portion 30 may be provided with a turntable 32 corresponding to the number of the band-shaped bonding wires, the band-shaped bonding wire holder 35, and the upper type 37. The ridge portion 38 and the ridge portion 43 of the lower mold 42. Further, the transport unit 5A may be provided with a band-shaped bonding wire suction hole 57 and a single-sucking suction hole 58. Further, the soldering portion 70 may be provided with the heating block 73 corresponding to the number 1 of the strip-shaped bonding wires. Here, in the welding device 100 described above, for example, the solar battery cell 10 and the strip-shaped bonding wire 15 are not displaced, and the main problem is to solve the problem of transporting in the clamped state. In this case, the configuration of the welding device is in a state in which the solar cell unit and the strip-shaped bonding wire 15 are overlapped, and is not limited to having a preheating temperature for heating the solar cell unit and the ribbon bonding wire to a temperature lower than the solder melting point. And a welded portion that heats the overlapping portion of the solar cell unit and the strip-shaped bonding wire to a temperature higher than a melting point of the solder. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1A is a plan view showing the configuration of a solar cell unit and a ribbon bonding wire; Fig. 1B is a side view showing the configuration of a solar cell unit and a ribbon bonding wire; Fig. 1C is a view showing the constitution of a solar cell unit; Fig. 2 is a view showing a schematic configuration of a welding device; Fig. 3 is a perspective view showing a configuration of a belt-shaped bonding wire loading device; and Fig. 4 is a view showing a band-shaped bonding wire loading device viewed from an arrow A direction Figure 5A is a view of the tape-shaped bonding wire loading device viewed from the direction of arrow b; Figure 5B is a view of the conveyor belt viewed from the direction of arrow c; Figure 6A is a strip-shaped bonding wire formed by a ribbon-shaped bonding wire loading device 6B is a side view of another aspect of the strip-shaped bonding wire; FIG. 6C is a side view of a shorter-sized strip-shaped bonding wire among the last placed ribbon-shaped bonding wires; FIG. 7 is a front view showing the original tape Figure 8 is a view showing a state in which a solar cell unit is placed on a conveyor belt; Figure 9 is a view showing a state in which a next (or last) ribbon-shaped bonding wire is placed; Fig. 10 is a perspective view showing a part of a heating head; Fig. 11 is a view showing a configuration of a heating head; Fig. 12 is a view showing a temperature change of the entire solar cell unit and the ribbon bonding wire according to the embodiment; Figure 2 is a diagram showing the shrinkage of the wire of the ribbon-bonding wire during cooling, and Figure 14 is a view showing the 201139021 solar cell unit and the ribbon bonding wire in the conventional welding device and the conventional welding device. A graph of temperature changes. [Description of main component symbols] ίο: Solar battery unit 11: front side continuous electrode 12: inner side continuous electrode 13: finger 15, 15a, 15b, 15c: strip-shaped bonding wire 16: soldering wire 17: molten soldering 18: wire 20: solar battery unit supply unit 21: unit loading device 22: storage table 30: ribbon bonding wire supply portion 32: reel 33: ribbon bonding wire loading device 35: ribbon bonding wire holder 36: ribbon Bonding wire cutter 37: upper type 38, 43: rib portion 39: forming portion 40, 45: segment portion 41: suction hole 41 201139021 42 : lower type 44 : groove portion 48 : heater 50 : conveying portion 51 : conveying Belt 52: conveying surface 53: belt-shaped joining wire suction hole 54: unit suction hole 55a, 55b: conveying roller 56: suction device 57: belt-shaped joining wire suction hole 58: unit suction hole 59a, 59b: temporary mounting position 60: Preheating section 61: Temperature control device 62: Heating furnace 63: Heater 64: Inlet 70: Welded portion 71: Ribbon-shaped bonding wire heating device 72: Heating head 73: Heating block 74: Sheath heater 75: Pressing force 42 201139021 76 : Pushing the spring 80: Portion 81 has: a cooling apparatus 100: 200 Welding apparatus: The apparatus for manufacturing solar battery module 201: bulkhead 202: a heating block 203: cooling block Fr of: the front side

Rr :後側 W :二個帶狀接合導線的中心之間的距離 43Rr : rear side W : distance between the centers of the two strip-shaped bonding wires 43

Claims (1)

201139021 七、申請專利範圍： 1、一種焊接裝置’其係焊接太陽電池單元及帶狀接合導 線之焊接裝置，其包括： 預熱部’其係在該太陽電池單元與該帶狀接合導線重 合的狀態下’將該太陽電池單元及該帶狀接合導線 加熱至焊接熔點以下的溫度；以及 焊接部，其係將該太陽電池單元與該帶狀接合導線的 重合部分加熱至比焊接溶點還高的溫度。 2 '如申請專利範圍第1項所述之焊接裝置，其中該焊接 4包括沿著該帶狀接合導線的長邊方向而配置的加熱 體，該加熱體藉由接近或接觸該太陽電池單元與該帶 狀接合導線的重合部分，將該太陽電池單元與該帶狀 接合導線的重合部分加熱至比焊接熔點還高的溫度。 3、如申請專利範圍第2項所述之焊接裝置，其中該加熱 體具有複數押壓子，其相對該太陽電池單元押壓該帶 狀接合導線。 斗、如申請專利範圍第丨項至第3項任一項所述之焊接裝 置，其中更包括將該太陽電池單元及該帶狀接合導線 搬送至s玄預熱部及該焊接部的搬送部，該搬送部將被 搬送中的該太陽電池單元吸附於搬送帶，藉由將該帶 狀接合導線夾在該太陽電池單元與該搬送帶之間，使 该太陽電池單元及該帶狀接合導線在定位狀態下被搬 〇 5、如申請專利範圍第4項所述之焊接裝置，其中該搬送 201139021 部藉由位於被搬送中的該帶狀接合導線之兩側的該搬 送帶的單元吸附孔，吸附該太陽電池單元，俾使該太 陽電池單元吸附於該搬送帶。 6、 如申請專利範圍第4項所述之焊接裝置，其中該搬送 部藉由將該搬送帶所載置的該帶狀接合導線係吸附於 該搬送帶，使該帶狀接合導線相對該搬送帶定位。 7、 如申請專利範圍第6項所述之焊接裝置，其中該搬送 部藉由位於該搬送帶所載置的該帶狀接合導線之下側 的該搬送帶的帶狀接合導線吸附孔，吸附該帶狀接合 導線，俾使該帶狀接合導線吸附於該搬送帶。 8、 如申請專利範圍第7項所述之焊接裝置，其中該搬送 部在該帶狀接合導線的焊煬開始熔化前，吸附被搬送 中的該帶狀接合導線。 9、 如申請專利範圍第1項所述之焊接裝置，其中更包括 供給該帶狀接合導線的帶狀接合導線供給部，該帶狀 接合導線供給部將帶狀接合導線彎曲成形，俾使該帶 狀接合導線連接於該太陽電池單元的表側連續電極的 一側與該帶狀接合導線連接於該太陽電池單元的裏側 連續電極的一側之間具有段差。 10、 如申請專利範圍第9項所述之焊接裝置，其中該帶狀 接合導線供給部將該帶狀接合導線傾斜成形，俾使該 帶狀接合導線連接於該太陽電池單元的表側連續電 極之一側，隨著朝向該帶狀接合導線的前端，該帶狀 接合導線的該前端與該表側連續電極接觸。 45 201139021 11、 如申請專利範圍第1項所述之焊接裝置，其中更包括 暫時固定裝置，其係在藉由該焊接部將該太陽電池單 元及忒▼狀接合導線的重合部分加熱至比焊接溶點 還高的溫度之前，將該帶狀接合導線及該太陽電池單 元於重合狀態暫時固定。 12、 如申請專利範圍第u項所述之焊接裝置，其中該暫 時固定裝置係藉由將重合於該太陽電池單元的表側 連續電極上的該帶狀接合導線加熱而暫時固定。 13、 如申請專利範圍第12項所述之焊接裝置，其中更包 括冷卻部，其係從該帶狀接合導線的長邊方向之其中 一側將藉由該焊接部使該太陽電池單元及該帶狀接 合導線的重合部分熔化的焊埸冷卻。 14、 一種焊接方法，其係焊接太陽電池單元及帶狀接合導 線之焊接方法，其包括： 預熱工程，其係在該太陽電池單元與該帶狀接合導線 重合的狀態下，將該太陽電池單元及該帶狀接合導 線加熱至焊接熔點以下的溫度；以及 焊接工程’其係將該太陽電池單元及該帶狀接合導線 的重合部分加熱至比焊接熔點還高的溫度。 46201139021 VII. Patent application scope: 1. A welding device for welding a solar cell unit and a strip-shaped bonding wire, comprising: a preheating portion 'which is in the solar cell unit and the strip-shaped bonding wire a state in which the solar cell unit and the strip-shaped bonding wire are heated to a temperature below the melting point of the solder; and a soldering portion that heats the overlapping portion of the solar cell unit and the strip-shaped bonding wire to be higher than the solder melting point temperature. [2] The soldering apparatus of claim 1, wherein the soldering 4 includes a heating body disposed along a longitudinal direction of the strip-shaped bonding wire, the heating body being in proximity to or in contact with the solar cell unit The overlapping portion of the strip-shaped bonding wires heats the overlapping portion of the solar cell unit and the strip-shaped bonding wires to a temperature higher than the melting point of the solder. 3. The welding apparatus of claim 2, wherein the heating body has a plurality of pressing pins that press the ribbon bonding wires against the solar battery cells. The welding device according to any one of claims 3 to 3, further comprising: conveying the solar battery unit and the strip-shaped bonding wire to the s-Xun preheating portion and the conveying portion of the welding portion The transport unit adsorbs the solar battery unit being transported to the transport belt, and sandwiches the strip-shaped bonding wire between the solar battery unit and the conveyor belt to connect the solar battery unit and the belt-shaped bonding wire. 5. The welding apparatus according to claim 4, wherein the transporting unit 201139021 is provided by a unit adsorption hole of the conveyor belt located on both sides of the strip-shaped bonding wire being conveyed. The solar cell unit is adsorbed, and the solar cell unit is adsorbed to the conveyor belt. 6. The welding apparatus according to claim 4, wherein the conveying unit adsorbs the belt-shaped bonding wire attached to the conveyor belt to the conveyor belt, and the belt-shaped bonding wire is transported relative to the conveyor belt. With positioning. 7. The welding device according to claim 6, wherein the conveying portion is adsorbed by a belt-shaped joining wire adsorption hole of the conveying belt located on a lower side of the belt-shaped joining wire disposed on the conveying belt. The strip-shaped bonding wire is used to adsorb the strip-shaped bonding wire to the conveyor belt. 8. The welding apparatus according to claim 7, wherein the conveying unit adsorbs the belt-shaped bonding wire being conveyed before the welding of the band-shaped bonding wire starts to melt. 9. The soldering apparatus according to claim 1, further comprising a strip-shaped bonding wire supply portion for supplying the strip-shaped bonding wire, the band-shaped bonding wire supply portion bending the band-shaped bonding wire to make the The strip-shaped bonding wire is connected to one side of the front side continuous electrode of the solar cell unit and has a step difference between a side of the strip-shaped bonding wire connected to the inner side continuous electrode of the solar cell unit. 10. The soldering apparatus according to claim 9, wherein the strip-shaped bonding wire supply portion obliquely shapes the strip-shaped bonding wire to connect the strip-shaped bonding wire to the front side continuous electrode of the solar cell unit. On one side, the front end of the strip-shaped bonding wire is in contact with the front side continuous electrode as it faces the front end of the strip-shaped bonding wire. The welding device of claim 1, further comprising a temporary fixing device for heating the overlapping portion of the solar cell unit and the 接合-shaped bonding wire to the specific welding by the welding portion The strip-shaped bonding wire and the solar cell unit are temporarily fixed in a superposed state before the melting point is still high. 12. The welding apparatus of claim 5, wherein the temporary fixing means is temporarily fixed by heating the strip-shaped bonding wire superposed on the front side continuous electrode of the solar cell unit. 13. The welding device of claim 12, further comprising a cooling portion for causing the solar cell unit and the solar cell unit by one of the long sides of the strip-shaped bonding wire The welded portion of the overlapping portion of the strip-shaped bonding wire is cooled. 14. A soldering method for soldering a solar cell unit and a strip bonding wire, comprising: a preheating process, wherein the solar cell is in a state of being coincident with the strip bonding wire, the solar cell The unit and the strip-shaped bonding wire are heated to a temperature below the melting point of the solder; and the soldering process 'heats the overlapping portion of the solar cell unit and the strip-shaped bonding wire to a temperature higher than a melting point of the solder. 46
TW099135828A 2009-10-20 2010-10-20 Soldering device and soldering method TW201139021A (en)

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