CN108461563B - 一种光伏电池板 - Google Patents

一种光伏电池板 Download PDF

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CN108461563B
CN108461563B CN201810385362.5A CN201810385362A CN108461563B CN 108461563 B CN108461563 B CN 108461563B CN 201810385362 A CN201810385362 A CN 201810385362A CN 108461563 B CN108461563 B CN 108461563B
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eva
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CN108461563A (zh
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周菊华
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Jiangsu Junjie New Energy Co ltd
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Haimen Pick Textile Technology Co Ltd
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Abstract

本发明提供一种光伏电池板，所述光伏电池板包括背板、第二EVA导热封装层、第三EVA封装层、太阳能电池片层、第四EVA封装层以及透明玻璃盖板，所述背板中具有多个导热弹性柱，每个导热弹性柱的上端嵌入到所述第二EVA导热封装层中，使得本发明的光伏电池板整体较厚，具有优异的散热性能和抗震性能，进而提高该光伏电池板的稳定性。

Description

一种光伏电池板
技术领域
本发明涉及光伏电池技术领域，特别是涉及一种光伏电池板。
背景技术
在现有的各类太阳能电池中，硅基太阳能电池由于效率高、制造工艺成熟而得到广泛的应用。现有的硅基太阳能组件通常包括玻璃盖板、第一EVA胶层、太阳能电池片层、第二EVA胶层以及太阳能电池背板。现有的太阳能电池背板有TPT背板和TPE背板，所述TPT背板是由一层300微米厚的PET层双面涂布胶黏剂后，在PET层的两面分别粘贴PVF层，该TPT背板具有优异的耐候性能；TPE背板是由一层300微米厚的PET层双面涂布黏结剂后，在PET层的下表面粘结PVF层，且在PET层的上表面粘结PE层或EVA层，该TPE背板同样具有优异的耐候性能。当太阳能电池组件的制备和使用过程中发生碰撞时，由于太阳能电池背板厚度较薄，导致电池片容易损坏。
发明内容
本发明的目的是克服上述现有技术的不足，提供一种光伏电池板。
为实现上述目的，本发明提出的一种光伏电池板，所述光伏电池板包括：
背板，所述背板包括依次层叠的铝板、第一含氟树脂层、PPE树脂层、PET树脂层、ASA树脂层、第二含氟树脂层以及第一EVA树脂层，所述背板中设置有多个呈阵列排布的通孔，所述通孔贯穿所述第一EVA树脂层、所述第二含氟树脂层、所述ASA树脂层、所述PET树脂层、所述PPE树脂层以及所述第一含氟树脂层并暴露所述铝板的上表面，每个所述通孔中均嵌入一个导热弹性柱，所述导热弹性柱的上端的一部分裸露于所述第一EVA树脂层，所述导热弹性柱的底面与所述铝板接触；
第二EVA导热封装层，所述第二EVA导热封装层覆盖所述背板，所述导热弹性柱的上端的该部分嵌入到所述第二EVA导热封装层中；
第三EVA封装层，所述第三EVA封装层铺设在所述第二EVA导热封装层上；
太阳能电池片层，所述太阳能电池片层铺设在所述第三EVA封装层上；
第四EVA封装层，所述第四EVA封装层铺设在所述太阳能电池片层上；
透明玻璃盖板，所述透明玻璃盖板设置于第四EVA封装层之上；
其中，所述导热弹性柱包括铜柱，所述铜柱的侧表面设置有第一硅橡胶层，所述第一硅橡胶层的表面设置有金属铜层，所述金属铜层的表面设置有第二硅橡胶层，所述第二硅橡胶层的表面设置有EVA粘结层，所述铜柱的顶表面中心区域具有一凹坑。
如上光伏电池板，进一步，所述铝板的厚度为100-200微米，所述第一含氟树脂层的厚度为100-300微米，所述PPE树脂层的厚度为100-200微米，所述PET树脂层的厚度为1-5毫米，所述ASA树脂层的厚度为100-150微米，所述第二含氟树脂层的厚度为100-300微米，所述第一EVA树脂层的厚度为80-150微米。
如上光伏电池板，进一步，所述第二EVA导热封装层包括EVA树脂以及导热纳米颗粒，所述导热纳米颗粒为氧化铝、氮化铝、氮化硼、氮化硅、氧化镁中的一种，所述导热纳米颗粒的粒径为100-200纳米。
如上光伏电池板，进一步，所述第二EVA导热封装层的厚度为300-500微米，所述第三EVA封装层的厚度为50-150微米，所述第四EVA封装层的厚度为200-400微米，所述导热弹性柱嵌入到所述第二EVA导热封装层中的该部分的长度为150-300微米。
如上光伏电池板，进一步，所述铜柱的直径为1-2厘米，所述第一硅橡胶层的厚度为5-10毫米，所述金属铜层的厚度为100-200微米，所述第二硅橡胶层的厚度为0.5-3毫米，所述EVA粘结层的厚度为50-100微米。
如上光伏电池板，进一步，所述铜柱的顶表面中心区域的所述凹坑的直径为0.5-1厘米，所述凹坑的深度为100-200微米
如上光伏电池板，进一步，所述第一含氟树脂层和所述第二含氟树脂层的材质为聚四氟乙烯、聚三氟氯乙烯、聚偏氟乙烯、聚氟乙烯、乙烯-三氟氯乙烯共聚物或乙烯-四氟乙烯共聚物。
与现有技术相比，本发明的有益效果在于:
本发明的光伏电池板中，在多层树脂层中形成贯穿通孔，每个所述通孔中均嵌入一个导热弹性柱，使得在形成较厚的背板中，多个导热弹性柱分别形成多条散热通路，可以将太阳能电池片产生的热量快速传导至铝板，有效提高太阳能电池组件的散热性能。通过优化导热弹性柱的结构，所述导热弹性柱包括铜柱、第一硅橡胶层、金属铜层、第二硅橡胶层以及EVA粘结层，使得导热弹性柱具有优异的导热性能同时还具有优异的缓冲性能，即使光伏电池板发生碰撞，导热弹性柱的存在可以确保电池片不被撞坏，同时导热弹性柱的上端嵌入到第二EVA导热封装层，且铜柱的顶表面中心区域具有一凹坑，增加导热弹性柱和第二EVA导热封装层的面积，进一步提高光伏电池板的稳固性和导热性能。背板的表面具有第一EVA树脂层，且在第二EVA导热封装层与电池片层之间具有一超薄的第三EVA封装层，使得光伏电池板更易粘结为一体。与现有的光伏电池板相比，通过优化本发明的光伏电池板的具体结构以及各层的具体尺寸，使得本发明的光伏电池板整体较厚，具有优异的散热性能和抗震性能，进而提高该光伏电池板的稳定性。
附图说明
图1为本发明的光伏电池板的结构示意图。
图2为本发明的导热弹性柱的截面示意图。
图3为本发明的导热弹性柱的俯视图。
具体实施方式
如图1-3所示，本发明提出一种光伏电池板，所述光伏电池板包括：背板1，所述背板包括依次层叠的铝板11、第一含氟树脂层12、PPE树脂层13、PET树脂层14、ASA树脂层15、第二含氟树脂层16以及第一EVA树脂层17，所述背板1中设置有多个呈阵列排布的通孔2，所述通孔2贯穿所述第一EVA树脂层17、所述第二含氟树脂层16、所述ASA树脂层15、所述PET树脂层14、所述PPE树脂层13以及所述第一含氟树脂层12并暴露所述铝板11的上表面，每个所述通孔2中均嵌入一个导热弹性柱3，所述导热弹性柱3的上端的一部分裸露于所述第一EVA树脂层17，所述导热弹性柱3的底面与所述铝板11接触；第二EVA导热封装层4，所述第二EVA导热封装层4覆盖所述背板1，所述导热弹性柱3的上端的该部分嵌入到所述第二EVA导热封装层4中；第三EVA封装层5，所述第三EVA封装层5铺设在所述第二EVA导热封装层4上；太阳能电池片层6，所述太阳能电池片层6铺设在所述第三EVA封装层5上；第四EVA封装层7，所述第四EVA封装层7铺设在所述太阳能电池片层6上；透明玻璃盖板8，所述透明玻璃盖板8设置于第四EVA封装层7之上，其中，所述导热弹性柱3包括铜柱31，所述铜柱31的侧表面设置有第一硅橡胶层32，所述第一硅橡胶层32的表面设置有金属铜层33，所述金属铜层33的表面设置有第二硅橡胶层34，所述第二硅橡胶层34的表面设置有EVA粘结层35，所述铜柱31的顶表面中心区域具有一凹坑36。
进一步，所述铝板11的厚度为100-200微米，所述第一含氟树脂层12的厚度为100-300微米，所述PPE树脂层13的厚度为100-200微米，所述PET树脂层14的厚度为1-5毫米，所述ASA树脂层15的厚度为100-150微米，所述第二含氟树脂层16的厚度为100-300微米，所述第一EVA树脂层17的厚度为80-150微米。通过优化各层的具体厚度，使得背板具有优异的稳定性和耐候性。
进一步，所述第二EVA导热封装层4包括EVA树脂以及导热纳米颗粒，所述导热纳米颗粒为氧化铝、氮化铝、氮化硼、氮化硅、氧化镁中的一种，所述导热纳米颗粒的粒径为100-200纳米。通过选择导热纳米颗粒的材质，确保第二EVA导热封装层具有优异导热性能，通过优化导热纳米颗粒的粒径，使得第二EVA导热封装层具有优异的粘结性能，不易发生剥离。
进一步，所述第二EVA导热封装层4的厚度为300-500微米，所述第三EVA封装层5的厚度为50-150微米，所述第四EVA封装层7的厚度为200-400微米，所述导热弹性柱3嵌入到所述第二EVA导热封装层4中的该部分的长度为150-300微米。第三EVA封装层的设置确保了光伏电池板的整体密封性能，导热弹性柱嵌入到所述第二EVA导热封装层中的长度的具体选择，快速导热的同时，确保导热弹性柱牢固粘结于第二EVA导热封装层，提高了光伏电池板的稳定性和使用寿命。
进一步，所述铜柱31的直径为1-2厘米，所述第一硅橡胶层32的厚度为5-10毫米，所述金属铜层33的厚度为100-200微米，所述第二硅橡胶层34的厚度为0.5-3毫米，所述EVA粘结层35的厚度为50-100微米。通过优化导热弹性柱的具体结构和参数，使得每个导热弹性柱均具有双重的导热通道和缓冲结构。
进一步，所述铜柱31的顶表面中心区域的所述凹坑36的直径为0.5-1厘米，所述凹坑36的深度为100-200微米。增加了导热弹性柱和第二EVA导热封装层的接触面积，提高了二者的牢固性。
进一步，所述第一含氟树脂层12和所述第二含氟树脂层16的材质为聚四氟乙烯、聚三氟氯乙烯、聚偏氟乙烯、聚氟乙烯、乙烯-三氟氯乙烯共聚物或乙烯-四氟乙烯共聚物。使得背板具有优异的耐候性能。
实施例1
如图1-3所示，本发明提出一种光伏电池板，所述光伏电池板包括：背板1，所述背板包括依次层叠的铝板11、第一含氟树脂层12、PPE树脂层13、PET树脂层14、ASA树脂层15、第二含氟树脂层16以及第一EVA树脂层17，所述背板1中设置有多个呈阵列排布的通孔2，所述通孔2贯穿所述第一EVA树脂层17、所述第二含氟树脂层16、所述ASA树脂层15、所述PET树脂层14、所述PPE树脂层13以及所述第一含氟树脂层12并暴露所述铝板11的上表面，每个所述通孔2中均嵌入一个导热弹性柱3，所述导热弹性柱3的上端的一部分裸露于所述第一EVA树脂层17，所述导热弹性柱3的底面与所述铝板11接触；第二EVA导热封装层4，所述第二EVA导热封装层4覆盖所述背板1，所述导热弹性柱3的上端的该部分嵌入到所述第二EVA导热封装层4中；第三EVA封装层5，所述第三EVA封装层5铺设在所述第二EVA导热封装层4上；太阳能电池片层6，所述太阳能电池片层6铺设在所述第三EVA封装层5上；第四EVA封装层7，所述第四EVA封装层7铺设在所述太阳能电池片层6上；透明玻璃盖板8，所述透明玻璃盖板8设置于第四EVA封装层7之上，其中，所述导热弹性柱3包括铜柱31，所述铜柱31的侧表面设置有第一硅橡胶层32，所述第一硅橡胶层32的表面设置有金属铜层33，所述金属铜层33的表面设置有第二硅橡胶层34，所述第二硅橡胶层34的表面设置有EVA粘结层35，所述铜柱31的顶表面中心区域具有一凹坑36。
其中，所述铝板11的厚度为150微米，所述第一含氟树脂层12的厚度为200微米，所述PPE树脂层13的厚度为150微米，所述PET树脂层14的厚度为3毫米，所述ASA树脂层15的厚度为120微米，所述第二含氟树脂层16的厚度为200微米，所述第一EVA树脂层17的厚度为100微米。所述第二EVA导热封装层4包括EVA树脂以及导热纳米颗粒，所述导热纳米颗粒为氧化铝，所述导热纳米颗粒的粒径为150纳米。所述第二EVA导热封装层4的厚度为400微米，所述第三EVA封装层5的厚度为100微米，所述第四EVA封装层7的厚度为300微米，所述导热弹性柱3嵌入到所述第二EVA导热封装层4中的该部分的长度为200微米。所述铜柱31的直径为1.5厘米，所述第一硅橡胶层32的厚度为8毫米，所述金属铜层33的厚度为150微米，所述第二硅橡胶层34的厚度为2毫米，所述EVA粘结层35的厚度为100微米。所述铜柱31的顶表面中心区域的所述凹坑36的直径为0.75厘米，所述凹坑36的深度为150微米。所述第一含氟树脂层12和所述第二含氟树脂层16的材质为聚四氟乙烯。
实施例2
本实施例提供另一种光伏电池板，与实施例1相比，区别仅在于，所述铝板11的厚度为200微米，所述第一含氟树脂层12的厚度为100微米，所述PPE树脂层13的厚度为200微米，所述PET树脂层14的厚度为2毫米，所述ASA树脂层15的厚度为150微米，所述第二含氟树脂层16的厚度为100微米，所述第一EVA树脂层17的厚度为150微米。所述第二EVA导热封装层4中的所述导热纳米颗粒为氮化硼，所述导热纳米颗粒的粒径为200纳米。所述第二EVA导热封装层4的厚度为500微米，所述第三EVA封装层5的厚度为50微米，所述第四EVA封装层7的厚度为200微米，所述导热弹性柱3嵌入到所述第二EVA导热封装层4中的该部分的长度为300微米。所述铜柱31的直径为2厘米，所述第一硅橡胶层32的厚度为10毫米，所述金属铜层33的厚度为200微米，所述第二硅橡胶层34的厚度为3毫米，所述EVA粘结层35的厚度为50-100微米。所述铜柱31的顶表面中心区域的所述凹坑36的直径为1厘米，所述凹坑36的深度为200微米。所述第一含氟树脂层12和所述第二含氟树脂层16的材质为聚偏氟乙烯。
实施例3
所述铝板11的厚度为100微米，所述第一含氟树脂层12的厚度为300微米，所述PPE树脂层13的厚度为200微米，所述PET树脂层14的厚度为5毫米，所述ASA树脂层15的厚度为100微米，所述第二含氟树脂层16的厚度为100微米，所述第一EVA树脂层17的厚度为150微米。所述第二EVA导热封装层4中的所述导热纳米颗粒为氧化镁，所述导热纳米颗粒的粒径为100纳米。所述第二EVA导热封装层4的厚度为300微米，所述第三EVA封装层5的厚度为150微米，所述第四EVA封装层7的厚度为400微米，所述导热弹性柱3嵌入到所述第二EVA导热封装层4中的该部分的长度为150微米。所述铜柱31的直径为1厘米，所述第一硅橡胶层32的厚度为5毫米，所述金属铜层33的厚度为100微米，所述第二硅橡胶层34的厚度为1毫米，所述EVA粘结层35的厚度为50微米。所述铜柱31的顶表面中心区域的所述凹坑36的直径为0.5厘米，所述凹坑36的深度为100微米。所述第一含氟树脂层12和所述第二含氟树脂层16的材质为乙烯-四氟乙烯共聚物。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (7)

1.一种光伏电池板，其特征在于：所述光伏电池板包括：
背板，所述背板包括依次层叠的铝板、第一含氟树脂层、PPE树脂层、PET树脂层、ASA树脂层、第二含氟树脂层以及第一EVA树脂层，所述背板中设置有多个呈阵列排布的通孔，所述通孔贯穿所述第一EVA树脂层、所述第二含氟树脂层、所述ASA树脂层、所述PET树脂层、所述PPE树脂层以及所述第一含氟树脂层并暴露所述铝板的上表面，每个所述通孔中均嵌入一个导热弹性柱，所述导热弹性柱的上端的一部分裸露于所述第一EVA树脂层，所述导热弹性柱的底面与所述铝板接触；
第二EVA导热封装层，所述第二EVA导热封装层覆盖所述背板，所述导热弹性柱的上端的该部分嵌入到所述第二EVA导热封装层中；
第三EVA封装层，所述第三EVA封装层铺设在所述第二EVA导热封装层上；
太阳能电池片层，所述太阳能电池片层铺设在所述第三EVA封装层上；
第四EVA封装层，所述第四EVA封装层铺设在所述太阳能电池片层上；
透明玻璃盖板，所述透明玻璃盖板设置于第四EVA封装层之上；
其中，所述导热弹性柱包括铜柱，所述铜柱的侧表面设置有第一硅橡胶层，所述第一硅橡胶层的表面设置有金属铜层，所述金属铜层的表面设置有第二硅橡胶层，所述第二硅橡胶层的表面设置有EVA粘结层，所述铜柱的顶表面中心区域具有一凹坑。
2.根据权利要求1所述的光伏电池板，其特征在于：所述铝板的厚度为100-200微米，所述第一含氟树脂层的厚度为100-300微米，所述PPE树脂层的厚度为100-200微米，所述PET树脂层的厚度为1-5毫米，所述ASA树脂层的厚度为100-150微米，所述第二含氟树脂层的厚度为100-300微米，所述第一EVA树脂层的厚度为80-150微米。
3.根据权利要求1所述的光伏电池板，其特征在于：所述第二EVA导热封装层包括EVA树脂以及导热纳米颗粒，所述导热纳米颗粒为氧化铝、氮化铝、氮化硼、氮化硅、氧化镁中的一种，所述导热纳米颗粒的粒径为100-200纳米。
4.根据权利要求3所述的光伏电池板，其特征在于：所述第二EVA导热封装层的厚度为300-500微米，所述第三EVA封装层的厚度为50-150微米，所述四EVA封装层的厚度为200-400微米，所述导热弹性柱嵌入到所述第二EVA导热封装层中的该部分的长度为150-300微米。
5.根据权利要求4所述的光伏电池板，其特征在于：所述铜柱的直径为1-2厘米，所述第一硅橡胶层的厚度为5-10毫米，所述金属铜层的厚度为100-200微米，所述第二硅橡胶层的厚度为0.5-3毫米，所述EVA粘结层的厚度为50-100微米。
6.根据权利要求5所述的光伏电池板，其特征在于：所述铜柱的顶表面中心区域的所述凹坑的直径为0.5-1厘米，所述凹坑的深度为100-200微米。
7.根据权利要求1所述的光伏电池板，其特征在于：所述第一含氟树脂层和所述第二含氟树脂层的材质为聚四氟乙烯、聚三氟氯乙烯、聚偏氟乙烯、聚氟乙烯、乙烯-三氟氯乙烯共聚物或乙烯-四氟乙烯共聚物。
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