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光伏檢測首頁 > 光伏測試新聞 > 光伏測試介紹以及光伏行業分類簡介!
光伏測試介紹以及光伏行業分類簡介!
09-12 12:02
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發布時間:2022年6月20日                            作者:德國GMC-I高美測儀(上海電勵士)

光伏行業介紹——光伏行業分類

按照制備劃分,可以將光伏行業分為上下中游三類,其中上游產業多位于我國西北區;中游產業多位于江浙領域;下游產業大型電站多位于西北,分布式全國均有分布。

光伏行業分類介紹

光伏行業分類介紹

光伏行業介紹——煉硅與切片

【單晶硅棒】

單晶硅的制備采用籽晶提拉的技術,形成晶格統一軸向的硅棒,在提拉過程中,對爐內雜質、溫控有非常高的要求。

單晶硅棒介紹

【多晶硅錠】

不管單晶或是多晶的制備,在制備完成后分切階段會劃分成A/B/C三個區,其中C區Z好,A區Z差,三個區的區別在于少子壽命、缺陷的多少,這會影響銷售價格。因此在制備過程中對溫區的均一性及穩定性有極高的要求。

多晶硅錠

【切片】

砂漿切割技術

砂漿切割技術

金剛線切割技術

金剛線切割技術

切片是采用鋼線將硅錠切成薄片(大約180um),切割過程對穩定性要求較高。

光伏行業介紹——電池與組件

光伏電池廠現主推無人化工廠,對設備一直穩定性要求很高,若出現一次斷電事故,

可造成印刷環節大批量的不良品,且無法返工。

【組件】

指具有封裝及內部聯結的,能單獨提供直流電輸出的,Z小不可分割的光伏電池組合裝置。

光伏電池組件分類介紹

光伏組件電池耐壓測試施加系統電壓2倍+1000V,保持1分鐘,記錄漏電電流

                   a、無絕緣擊穿或表面裂紋現象

                   b、漏電流不大于50uA

                   c、絕緣電阻不小于50MΩ

光伏組件電池絕緣測試施加500V或組件Z大系統電壓的高值,維持電壓2min,測量絕緣電阻

                  a、對面積不大于0.1m2的組件,不小于400MΩ

                  b、對面積大于0.1m2的組件,測試絕緣電阻乘以組件面積應不小于   

                       40MΩ*m2

光伏組件電池濕漏電測試將組件浸泡入22℃,表面張力不大于3N/m,電阻率不大于3500Ω*cm的 

                    溶液中,施壓500V或系統電壓峰值,測試2min

                  a、對面積不小于0.1m2的組件,不小于400MΩ

                  b、對面積大于0.1m2的組件,測試絕緣電阻乘以組件面積應不小于40MΩ*m2

測試的目的是對電池的輸出功率進行標定,測試其輸出特性,確定組件的質量等級。目前主要就是模擬太陽光的測試

1.標準條件:  AM1.5, 1000 W/m2,  25℃。

2.正確設定測試光強,范圍在100—100.5mW/cm2,環境溫度25±2℃,濕度在70%以下。

3.標準板電流校正范圍±0.02A內,標準板功率校正范圍在±1W內。

4.設備使用期間,生產人員每2小時重新校正一次,并做好電子版數據存檔,以備工藝稽核人員抽檢。

5.組件在恒溫室放置直至至組件溫度在25±2℃范圍內才可進行測試。

6.測試在翻轉組件時輕拿輕放,不允許有聲音發出。

7.測試時保證組件正面清潔

光伏組件測試

測試設備要求:

☆ B級或更優的太陽模擬器

☆ 溫度測試精度為±1℃,重復性為±0.5℃

☆ 測試測試樣品與標準器件電流的儀器,精度為讀數的±0.2%

☆ 測試測試樣品與標準器件電壓的儀器,精度為讀數的±0.2%

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