组件功率与温度及温度系数的关系

1、 机密工艺试验报告试 验 项 目 试 验 名 称 组件功率与温度及温度系数的关系 试 验 地 点 测试房 试 验 负 责 人 审 核 日 期 一、 试验目的1、比较不同温度下组件的功率数值以确定组件测试的温度选择；2、根据组件在不同温度下的Isc、Voc值，计算一定温度区间内的a、b值，确定不同a、b值对功率测试的影响。二、 试验内容 试验对象：C区测试房，一批组件 使用工具：太阳能模拟器 试验步骤：1、调节测试房的空调温度使组件的温度达到相对的稳定； 2、对组件进行I-V测试，重复步骤，选择相邻的3个温度进行I-V测试； 3、根据不同温度下，组件的Isc、Voc值，计算a、b值并代入太阳能参

2、数设置处进行测试； 4、将a=0、b=0代入参数设置处进行组件I-V测试，比较不同a、b值对组件功率值的影响。三、实验现象及分析结果试验在C区测试房进行，通过测试房空调温度的调节使组件温度保持在一定的温度范围内（21.36、22.71、24.28、25.26）。对组件进行I-V测试，测试过程中太阳能模拟器只在测试初进行校正一次，比较不同温度下，组件的功率值。表1是组件在不同温度下的功率数值，图1是不同温度下各个组件功率数值比较的折线图。表1 不同温度下，组件的功率数值表组件条码温度21.3622.7124.2825.26SH120703P630CS71-007240.1229240.38272

3、40.9157239.7135SH120703P630CS71-061240.7239241.0672239.8931240.854SH120703P630CS71-062239.367240.3308241.2328239.5713SH120703P630CS71-065240.2253240.849239.3905241.3941SH120703P630CS71-068240.1837240.4458240.9023239.9744SH120703P630CS71-163240.8475241.1965239.9718240.77SH120703P630CS71-171241.407423

4、9.7729240.7525240.5905SH120703P630CS71-191240.8498241.4475241.4035238.5121SH120703P630CS71-228241.3598239.8311240.3156240.7034SH120703P630CS71-240240.7933241.1248239.9521240.8315SH120703P630CS71-435240.4059240.9574239.8629240.968SH120703P630CS71-436240.9556240.2035241.2473239.5631SH120703P630CS71-43

5、7240.0621240.3425241.0486239.6554SH120703P630CS71-438240.8553240.305241.3117239.4744SH120703P630CS71-439241.5917238.8276240.8289240.2274SH120703P630CS71-447241.1829239.9826240.2827240.7543SH120703P630CS71-492241.4687239.7589240.7665240.5466SH120703P630CS71-496240.1912240.6691240.8323240.1833SH120703

6、P630CS71-516240.8776240.2532241.2756239.5569平均值240.709240.4078240.6414240.2023图1 不同温度下，组件功率数值在图1中，可以看到组件温度对组件功率数值有着一定的影响，温度在21.3625.26变化时，功率平均值的极差在0.5W左右。组件温度低时，所测功率数值的变化并不突出。根据温度在21.3625.26变化的Isc、Voc数值，做出a、b值并代入太阳能参数设置处直接进行组件功率测试，a、b值计算方法如表2所示表2 温度系数a、b值计算TMeasIscVoc21.335298.53784337.249822.711768

7、.54564537.2209924.264718.55093937.2568625.247068.55002837.22534a=3.237725b=-0.03695此外，选取了a=b=0的情况，具体测试数据见表3。表3 未进行标板时，不同温度系数下组件的功率值a=0、b=0、Rs=0.38、K=0.001Pmaxa=3.2377、b=-0.03695、Rs=0.38、K=0.001Pmaxa=4.7、b=-2.115、Rs=0.38、K=0.001PmaxSH120703P630CS71-007242.7432SH120703P630CS71-007242.5172SH120703P630C

8、S71-007240.4918SH120703P630CS71-062241.2892SH120703P630CS71-062241.1712SH120703P630CS71-062239.0642SH120703P630CS71-068242.0621SH120703P630CS71-068241.8549SH120703P630CS71-068239.9472SH120703P630CS71-191242.4802SH120703P630CS71-191242.4871SH120703P630CS71-191240.0637SH120703P630CS71-436242.1694SH120

9、703P630CS71-436242.0806SH120703P630CS71-436240.1995SH120703P630CS71-437242.7375SH120703P630CS71-437242.4476SH120703P630CS71-437240.3548SH120703P630CS71-438242.6738SH120703P630CS71-438242.5644SH120703P630CS71-438240.3481SH120703P630CS71-439243.2639SH120703P630CS71-439242.7298SH120703P630CS71-439241.1

10、385SH120703P630CS71-496243.4577SH120703P630CS71-496242.9927SH120703P630CS71-496241.4646SH120703P630CS71-516243.2641SH120703P630CS71-516243.1142SH120703P630CS71-516240.909在表3中，可以看到未进行重新标板时，温度系数的改变可以使组件功率值发生明显变化，增加了2w左右，如图2所示。图2 不同温度系数时，组件的功率数值当温度系数a、b值改变时，对太阳能模拟器进行校正并对组件功率进行测试分析。表4 不同温度系数时，对标板校正所测功率S

11、N(a=3.237,b=-0.037)PmaxRefCellCalSN(a=4.7,b=-2.115)PmaxRefCellCalSH120709P630DS73-031242.21791.0475SH120709P630DS73-031242.93781.0543SH120709P630DS73-135241.11351.0475SH120709P630DS73-135241.8021.0543SH120709P630DS73-143240.6921.0475SH120709P630DS73-143242.36231.0543SH120709P630DS73-169240.5051.0475

12、SH120709P630DS73-169242.25171.0543SH120709P630DS73-207239.13381.0475SH120709P630DS73-207240.6681.0543SH120709P630DS73-211241.87171.0475SH120709P630DS73-211241.9881.0543SH120709P630DS73-214240.01861.0475SH120709P630DS73-214241.9451.0543SH120709P630DS73-296239.81361.0475SH120709P630DS73-296241.3781.05

13、43SH120709P630DS73-318240.17471.0475SH120709P630DS73-318241.3481.0543SH120709P630DS73-384240.65861.0475SH120709P630DS73-384242.30791.0543SH120709P630DS73-454239.57841.0475SH120709P630DS73-454241.30141.0543SH120709P630DS73-466240.08851.0475SH120709P630DS73-466241.57051.0543SH120710P630FS74-280239.534

14、21.0475SH120710P630FS74-280241.29731.0543SH120710P630FS74-292241.94541.0475SH120710P630FS74-292241.46781.0543SH120710P630FS74-293239.89481.0475SH120710P630FS74-293240.90111.0543SH120710P630FS74-349241.28691.0475SH120710P630FS74-349241.7341.0543SH120710P630FS74-350240.25961.0475SH120710P630FS74-35024

15、0.85491.0543SH120710P630FS74-351239.98931.0475SH120710P630FS74-351241.09111.0543SH120710P630FS74-357239.35331.0475SH120710P630FS74-357240.9661.0543SH120710P630FS74-358239.15891.0475SH120710P630FS74-358240.81031.0543图3 不同a、b值时，标板后对组件测试分析在图3中，可以看到不同a、b值时，对太阳能模拟器进行校正后对组件进行测试：当a=3.237、b=-0.037时组件的功率测试值要低于模拟器设定值（a