CN110299476A - 一种动力电池箱体及其制备方法、纤维增强复合材料 - Google Patents
一种动力电池箱体及其制备方法、纤维增强复合材料 Download PDFInfo
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- CN110299476A CN110299476A CN201810236963.XA CN201810236963A CN110299476A CN 110299476 A CN110299476 A CN 110299476A CN 201810236963 A CN201810236963 A CN 201810236963A CN 110299476 A CN110299476 A CN 110299476A
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Abstract
本发明涉及一种动力电池箱体及其制备方法、纤维增强复合材料，属于动力电池箱体技术领域。本发明的动力电池箱体，主要由以下重量份数的原料制成：高分子基体材料40～65份、增强纤维30～70份、阻燃剂35～45份、润滑剂5～10份、填充剂1～2份；所述增强纤维为镀金属纤维或镀金属纤维织物。本发明的动力电池箱体，一次成型即可制成，能够简化生产工艺，并且成本低、成品率高，具有良好的电磁屏蔽作用，无需采用厚重的金属板或金属箔，且不会随车体震动而失效；此外，本发明的动力电池箱体还具有质量轻、强度高、绝缘性好、耐腐蚀和安全性高等优点。
Description
技术领域
本发明涉及一种动力电池箱体及其制备方法、纤维增强复合材料，属于动力电池箱体技术领域。
背景技术
近年来环保形势越发严峻，国家对新能源汽车的补贴以及因环保而对传统燃油车的限号行驶政策，使人们对于新能源汽车越发偏爱，尤其是纯电动汽车。
动力电池是纯电动汽车上的关键部件，其箱体材料目前用量最多的是高强度钢板和铝板，但是为了满足动力电池的减重、降本、防腐蚀等需求，一些车企开始采用纤维增强复合材料或工程塑料等非金属材料来制作电池箱体。如申请公布号为CN106750899A的中国发明专利公开了一种采用玄武岩长纤维增强聚丙烯材料制备电池箱的方法，该方法是将高熔指聚丙烯、相容剂、弹性体、流动改性剂和高目数滑石粉低速搅拌后熔融挤出制成膜片，然后将改性玄武岩纤维切断后与所得膜片在双螺杆挤出机中混合后再挤出成复合膜片或复合颗粒，再将复合膜片或复合颗粒直接模压成型，制成汽车电池箱；该电池箱具有质轻、强度高等优点，但由于非金属材料的电磁屏蔽效果很差，这一类由非金属材料制成的电池箱体常常需要在电池箱内部粘贴一层金属箔(如铝箔、铜箔等)来实现电池箱体的电磁屏蔽作用。由于在箱体内粘接金属箔，需要在箱体成型后再进行，不可一次成型完成，还可能出现金属箔随车体震动发生脱落失效的问题。
现有技术中，申请公布号为CN107146861A的中国发明专利公开了一种能导热、排气及防水的电池PACK箱结构，其箱体复合材料是碳纤维增强复合材料，在箱体内部用胶水固定一层锡箔层用以电磁屏蔽的作用。此专利为实现非金属箱体的电磁屏蔽功能，在复合材料箱体内附了一层金属箔，在汽车行驶中可能会因车体震动而使金属箔层脱落而使电磁屏蔽效果失效；而且金属箔层的粘接需要在复合材料箱体成型后进行，不可一次成型完成。又如授权公告号为CN104393200B的中国发明专利公开了一种复合材料电池箱，该电池箱的箱体设置为双层：由纤维复合材料制成的内壁和外壁，内壁和外壁之间的夹持空间内有反射层和隔热层，反射层靠近外壁设置，是铝箔材料；内壁背离夹持空间的表面上形成有发热层，由导热的铜箔(或石墨，或石墨烯)加发泡材料组成；该电池箱中设置的铝箔和铜箔，能够起到电磁屏蔽的作用，但该箱体成型过程中铺层多且复杂。因此，开发一种可以随复合材料一次成型并具有电磁屏蔽效果的电池箱体迫在眉睫。
发明内容
本发明的目的是提供一种具有电磁屏蔽功能的动力电池箱体，能够简化动力电池箱体的生产工艺。
本发明还提供了一种上述动力电池箱体的制备方法和一种纤维增强复合材料。
为了实现以上目的，本发明的动力电池箱体所采用的技术方案是：
一种动力电池箱体，主要由以下重量份数的原料制成：高分子基体材料40～65份、增强纤维30～70份、阻燃剂35～45份、润滑剂5～10份、填充剂1～2份；所述增强纤维为镀金属纤维或镀金属纤维织物。
本发明的动力电池箱体，一次成型即可制成，能够简化生产工艺，并且成本低、成品率高，具有良好的电磁屏蔽作用，无需采用厚重的金属板或金属箔，且不会随车体震动而失效；此外，本发明的动力电池箱体还具有质量轻、强度高、绝缘性好、耐腐蚀和安全性高等优点。本发明的动力电池箱体，相较于钢板材料的动力电池箱体，在强度、刚度不降低的情况下，实现减重50～60％；相较于铝合金板产品，可实现强度、刚度及产品重量持平，价格降低20～30％。
所述镀金属纤维为表面包覆有金属镀层的纤维；所述镀金属纤维织物为表面涂覆有金属镀层的纤维织物。
纤维表面包覆的金属镀层、纤维织物表面涂覆的金属镀层均可以通过化学镀或电镀的方法进行镀覆。镀金属纤维表面和镀金属纤维织物表面的金属镀层能够起到电磁屏蔽的作用。
所述镀金属纤维为表面包覆有金属镀层的短切纤维或连续纤维。所述短切纤维、连续纤维均独立选自玻璃纤维、碳纤维、玄武岩纤维、芳纶纤维中的至少一种。所述短切纤维的长度不超过25mm，直径为3～5mm。所述连续纤维的长度大于25mm，直径为3～5mm。
所述纤维织物为玻璃纤维、碳纤维、玄武岩纤维和芳纶纤维中的至少一种织造成的织物。
所述金属镀层为铜镀层、铝镀层或镍镀层。
所述填充剂为滑石粉、石膏粉、石英粉、云母粉中的至少一种。
优选的，所述动力电池箱体，主要由以下重量份数的原料制成：高分子基体材料40～60份；增强纤维30～70份；阻燃剂35～45份；润滑剂5～10份；填充剂1～2份；其他助剂5～10份；所述增强纤维为表面包覆有金属镀层的短切纤维。
优选的，所述动力电池箱体，主要由以下重量份数的原料制成：高分子基体材料45～60份；增强纤维30～65份；阻燃剂35～45份；润滑剂5～10份；填充剂1～2份；其他助剂5～10份；所述增强纤维为镀金属纤维织物或表面包覆有金属镀层的连续纤维。
所述原料还包括抗氧剂0.05～1份；所述抗氧剂为硬脂酸锌、硬脂酸钡中的至少一种。
所述润滑剂为石蜡油、硬脂酸甘油酯、硬脂酸环己酯中的至少一种。
所述高分子基体材料为热塑性树脂或热固性树脂。优选的，所述高分子基体材料为不饱和聚酯树脂、环氧树脂、聚丙烯树脂、聚酰胺树脂、乙烯基树脂中的至少一种。
优选的，所述环氧树脂为缩水甘油醚类环氧树脂、缩水甘油胺类环氧树脂、脂肪族类环氧树脂中的至少一种。
所述阻燃剂为磷氮系无卤膨胀型阻燃剂。磷氮系无卤片膨胀性阻燃剂不含卤素，以磷、氮为主要活性组分，材料燃烧后不产生有毒有害物质，更加环保安全；加了此类阻燃剂的产品，遇火受热时，材料表面生成一层均匀的炭质泡沫层，此层隔热、隔氧、抑烟，并能防止产生熔滴，故具有良好的阻燃性能，且符合当今要求阻燃剂少烟、低毒的发展趋势。
所述原料还包括5～10份的其他助剂；所述其他助剂为固化剂、增塑剂、着色剂、抗静电剂中的至少一种。
本发明的动力电池箱体，包括密封配合的上箱盖和下箱体。上箱盖和下箱体的厚度为1.6～3mm，面密度为2.5～5.4kg/m2。
本发明的电池箱采用上述电池箱用纤维增强复合材料制成，具有良好的电磁屏蔽作用，且无需采用厚重的金属板或金属箔，且不会随车体震动而失效，具有绝缘性好、安全性高的优点。
本发明的电池箱的制备方法所采用的技术方案为：
一种上述的动力电池箱体的制备方法，包括以下步骤：取配方量的各原料，混合均匀，成型，制成密封配合的上箱盖和下箱体，即得；所述增强纤维为镀金属纤维；所述镀金属纤维为表面包覆金属镀层的短切纤维。
采用的增强纤维为表面包覆金属镀层的短切纤维时，所采用的成型工艺为注射成型、模压成型、热压成型中的一种。所述短切纤维的长度不超过25mm。短切纤维的直径为2～5mm。
采用的是增强纤维为镀金属织物或表面包覆有金属镀层的连续纤维时，上述动力电池箱体采用HP-RTM、VARI或湿法模压工艺压制成。
本发明的动力电池箱体的制备方法，工艺简单，成本低，便于推广应用。
上箱盖和下箱体成型后，安装电芯以及控制系统等其他电池配件，然后将上箱盖和下箱体进行封装。
本发明的纤维增强复合材料所采用的技术方案为:
本发明的纤维增强复合材料，主要由以下重量份数的原料制成：高分子基体材料45～60份、增强纤维30～65份、阻燃剂35～45份、润滑剂5～10份、填充剂1～2份；所述增强纤维为镀金属纤维或镀金属纤维织物。
本发明的纤维增强复合材料可以采用现有技术中的纤维增强复合材料成型工艺制成，如注射成型、模压成型、热压成型，也可以采用HP-RTM、VARI或湿法模压成型。本发明的纤维增强复合材料具有良好的电磁屏蔽性能，并具有质量轻、强度高、绝缘性好、耐腐蚀和安全性高等优点，可用作动力电池箱体材料。
所述镀金属纤维为表面包覆有金属镀层的纤维；所述镀金属纤维织物为表面涂覆有金属镀层的纤维织物。
纤维表面包覆的金属镀层、纤维织物表面涂覆的金属镀层均可以通过化学镀或电镀的方法进行镀覆。镀金属纤维表面和镀金属纤维织物表面的金属镀层能够起到电磁屏蔽的作用。
所述镀金属纤维为表面包覆有金属镀层的短切纤维或连续纤维。所述短切纤维、连续纤维均独立选自玻璃纤维、碳纤维、玄武岩纤维、芳纶纤维中的至少一种。所述短切纤维的长度不超过25mm，直径为3～5mm。所述连续纤维的长度大于25mm，直径为3～5mm。
所述纤维织物为玻璃纤维、碳纤维、玄武岩纤维和芳纶纤维中的至少一种织造成的织物。
所述高分子基体材料为热塑性树脂或热固性树脂。优选的，所述高分子基体材料为不饱和聚酯树脂、环氧树脂、聚丙烯树脂、聚酰胺树脂、乙烯基树脂中的至少一种。
优选的，所述环氧树脂为缩水甘油醚类环氧树脂、缩水甘油胺类环氧树脂、脂肪族类环氧树脂中的至少一种。
所述原料还包括抗氧剂0.05～1份；所述抗氧剂为硬脂酸锌、硬脂酸钡中的至少一种。
所述阻燃剂为磷氮系无卤膨胀型阻燃剂。
所述润滑剂为石蜡油、硬脂酸甘油酯、硬脂酸环己酯中的至少一种。
所述填充剂为滑石粉、石膏粉、石英粉、云母粉中的至少一种。
优选的，所述动力电池箱体，主要由以下重量份数的原料制成：高分子基体材料40～60份；增强纤维30～70份；阻燃剂35～45份；润滑剂5～10份；填充剂1～2份；其他助剂5～10份；所述增强纤维为表面包覆有金属镀层的短切纤维。
优选的，所述动力电池箱体，主要由以下重量份数的原料制成：高分子基体材料45～60份；增强纤维30～65份；阻燃剂35～45份；润滑剂5～10份；填充剂1～2份；其他助剂5～10份；所述增强纤维为镀金属纤维织物或表面包覆有金属镀层的连续纤维。
所述原料还包括5～10份的其他助剂；所述其他助剂为固化剂、增塑剂、着色剂、抗静电剂中的至少一种。
本发明中出现的部分名词的解释：
1)电磁屏蔽：即电磁兼容性，缩写EMC。指某电子设备既不干扰其它设备，同时也不受其它设备的影响，是电子产品重要的质量指标。
2)化学镀：也称无电解镀或者自催化镀，是在无外加电流的情况下借助合适的还原剂，使镀液中金属离子还原成金属，并沉积到零件表面的一种镀覆方法。是在金属的催化作用下，通过可控制的氧化还原反应产生金属的沉积过程。与电镀相比，化学镀技术具有镀层均匀、针孔小、不需直流电源设备、能在非导体上沉积和具有某些特殊性能等特点。另外，由于化学镀技术废液排放少，对环境污染小以及成本较低，在许多领域已逐步取代电镀，成为一种环保型的表面处理工艺。
3)电镀：是利用电解池原理在金属表面上沉积出附着良好的一薄层其它金属或合金的过程，是利用电解池作用使金属或其它材料制件的表面附着一层金属膜的工艺从而起到防止金属氧化(如锈蚀)，提高耐磨性、导电性、反光性、抗腐蚀性及增进美观等作用。电镀层厚度均匀，一般较薄，从几个微米到几十个微米不等。
4)HP-RTM：是高压树脂传递模塑成型工艺的简称，指利用高压压力将树脂对冲混合并注入到预先铺设有纤维增强材料和预置嵌件的真空密闭模具内，经树脂流动充模、浸渍、固化和脱模，获得复合材料制品的成型工艺。
5)VARI：真空辅助成型技术，是一种新型的低成本的复合材料大型制件的成型技术，它是在真空状态下排除纤维增强体中的气体，利用树脂的流动、渗透，实现对纤维及其织物浸渍，并在已定温度下进行固化，形成已定树脂、纤维比例的工艺方法。
6)压缩成型：即模压成型，是先将粉状、粒状或纤维状的塑料放入成型温度下的模具型腔中，然后闭模加压而使其成型并固化的作业。压缩成型可兼用于热固性塑料、热塑性塑料盒橡胶材料。
7)注射成型：先将底膜固定、预热，然后利用注射机械在一定的压力条件下，通过一注入口将纤维、树脂等一起挤压入模型内成型的工艺方法。
附图说明
图1为实施例中所采用增强纤维为镀金属纤维时，单根镀金属纤维的截面示意图，A为碳纤维、玄武岩纤维、玻璃纤维或芳纶纤维，B为金属镀层；
图2为实施例1的动力电池箱体的剖面图，其中，1-上箱盖，2-下箱体；
图3为图2中C处的放大图，其中，3-固化后的树脂基体，4-镀金属纤维；
图4为实施例3的动力电池箱体的剖面图，其中5-上箱盖，6-下箱体；
图5为图4中D处的放大图，其中，7-固化后的树脂基体，8-镀金属纤维织物。
具体实施方式
以下结合具体实施方式对本发明的技术方案作进一步的说明。
具体实施方式中所采用的镀金属纤维的截面如图1所示。
实施例1
本实施例的用于电池箱的纤维增强复合材料，主要由以下重量份数的原料制成：高分子基体材料50份、镀金属纤维30份、润滑剂10份、阻燃剂40份、填充剂2份、抗氧剂0.05份、固化剂10份；所采用的高分子基体材料为不饱和聚酯树脂，镀金属纤维为长度不超过2.5mm的镀镍玻璃纤维，润滑剂为石蜡油，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为滑石粉，抗氧剂为硬脂酸锌，固化剂为苯乙烯。
本实施例的动力电池箱体，如图2所示，包括密封配合的上箱盖1和下箱体2，主要由以下重量份数的原料制成：高分子基体材料50份、镀金属纤维织物30份、润滑剂10份、阻燃剂40份、填充剂2份、抗氧剂0.05份、固化剂10份；所采用的高分子基体材料为不饱和聚酯树脂，镀金属纤维为长度不超过25mm的镀镍玻璃纤维，润滑剂为石蜡油，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为滑石粉，抗氧剂为硬脂酸锌，固化剂为苯乙烯。
本实施例的动力电池箱体的下箱体剖面放大后如图3所示，其中3-固化后的树脂基体，4-镀金属纤维。上箱盖剖面放大后完全同下箱体。本实施例的动力电池箱体的上箱盖和下箱体均可采用现有技术中的模压成型或注射成型工艺制成。
实施例2
本实施例的纤维增强复合材料，主要由以下重量份数的原料制成：高分子基体材料65份、增强纤维30份、润滑剂5份、阻燃剂45份、填充剂1份、抗氧剂0.5份、固化剂5份；所采用的高分子基体材料为不饱和聚酯树脂，镀金属纤维为的镀镍连续玄武岩纤维(长度根据箱体的尺寸决定)，润滑剂为石蜡油，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为滑石粉，抗氧剂为硬脂酸钡，固化剂为苯乙烯。
本实施例的动力电池箱体，包括密封配合的上箱盖和下箱体，主要由以下重量份数的原料制成：高分子基体材料65份、增强纤维30份、润滑剂5份、阻燃剂45份、填充剂1份、抗氧剂0.5份、固化剂5份；所采用的高分子基体材料为不饱和聚酯树脂，镀金属纤维为的镀镍连续玄武岩纤维(长度根据动力电池箱体的尺寸决定)，润滑剂为石蜡油，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为滑石粉，抗氧剂为硬脂酸钡，固化剂为苯乙烯。
本实施例的动力电池箱体的上箱盖和下箱体均可采用现有技术中的高压树脂传递模塑成型(HP-RTM)、真空辅助成型(VARI)或湿法模压工艺制成。
实施例3
本实施例的纤维增强复合材料，主要由以下重量份数的原料制成：高分子基体材料45份、镀金属纤维织物45份、润滑剂8份、阻燃剂35份、填充剂1.5份、抗氧剂0.05份、固化剂7份；所采用的高分子基体材料为缩水甘油胺类环氧树脂，镀金属纤维织物为镀铝碳纤维T700布，润滑剂为石蜡油，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为滑石粉，抗氧剂为硬脂酸锌，固化剂为乙二胺。
本实施例的动力电池箱体，如图4所示，包括密封配合的上箱盖5和下箱体6，主要由以下重量份数的原料制成：高分子基体材料45份、镀金属纤维织物45份、润滑剂8份、阻燃剂35份、填充剂1.5份、抗氧剂0.05份、固化剂7份；所采用的高分子基体材料为缩水甘油胺类环氧树脂，镀金属纤维织物为镀铝碳纤维T700布，润滑剂为石蜡油，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为滑石粉，抗氧剂为硬脂酸锌，固化剂为乙二胺。
本实施例的动力电池箱体的上箱盖剖面放大如图5所示，其中7-固化后的树脂基体，8-镀金属纤维织物；下箱体剖面放大后完全同上箱盖。本实施例的动力电池箱体的上箱盖和下箱体均可采用现有技术中的真空辅助成型(VARI)或湿法模压成型工艺制成。
实施例4
本实施例的纤维增强复合材料，主要由以下重量份数的原料制成：高分子基体材料40份、镀金属纤维50份、润滑剂7份、阻燃剂45份、填充剂1.5份、抗氧剂1份、固化剂8份；所采用的高分子基体材料为乙烯基树脂，镀金属纤维为长度不超过25mm的镀铜玄武岩纤维，润滑剂为硬脂酸甘油酯，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为石膏粉，抗氧剂为硬脂酸钡，固化剂为苯乙烯。
本实施例的动力电池箱体，包括密封配合的上箱盖和下箱体，主要由以下重量份数的原料制成：高分子基体材料40份、镀金属纤维50份、润滑剂7份、阻燃剂45份、填充剂1.5份、抗氧剂1份、固化剂8份；所采用的高分子基体材料为乙烯基树脂，镀金属纤维为长度不超过25mm的镀铜玄武岩纤维，润滑剂为硬脂酸甘油酯，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为石膏粉，抗氧剂为硬脂酸钡，固化剂为苯乙烯。
本实施例的动力电池箱体的上箱盖和下箱体均可采用现有技术中的模压成型或注射成型工艺制成。
实施例5
本实施例的纤维增强复合材料，主要由以下重量份数的原料制成：高分子基体材料58份、镀金属纤维65份、润滑剂10份、阻燃剂40份、填充剂2份、抗氧剂1份；所采用的高分子基体材料为聚丙烯树脂，镀金属纤维织物为镀铜芳纶纤维织物，润滑剂为硬脂酸环己酯，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为石英粉，抗氧剂为硬脂酸锌。
本实施例的动力电池箱体，包括密封配合的上箱盖和下箱体，主要由以下重量份数的原料制成：高分子基体材料58份、镀金属纤维65份、润滑剂10份、阻燃剂40份、填充剂2份、抗氧剂1份；所采用的高分子基体材料为聚丙烯树脂，镀金属纤维为镀铜芳纶纤维织物，润滑剂为硬脂酸环己酯，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为石英粉，抗氧剂为硬脂酸锌。
本实施例的动力电池箱体的上箱盖和下箱体均可以采用现有技术中的模压成型工艺制成。
实施例6
本实施例的纤维增强复合材料，主要由以下重量份数的原料制成：高分子基体材料60份、镀金属纤维70份、润滑剂5份、阻燃剂35份、填充剂1份、抗氧剂0.05份、固化剂5份；所采用的高分子基体材料为聚氨酯树脂，镀金属纤维为长度不超过25mm的镀铜玻璃纤维，润滑剂为石蜡油，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为云母粉，抗氧剂为硬脂酸钡，固化剂为甘油。
本实施例的动力电池箱体，包括密封配合的上箱盖和下箱体，主要由以下重量份数的原料制成：高分子基体材料60份、镀金属纤维70份、润滑剂15份、阻燃剂35份、填充剂1份、抗氧剂0.05份、固化剂5份；所采用的高分子基体材料为聚氨酯树脂，镀金属纤维为长度不超过25mm的镀铜长玻璃纤维，润滑剂为石蜡油，阻燃剂为磷氮系无卤膨胀型阻燃剂，填充剂为云母粉，抗氧剂为硬脂酸钡，固化剂为甘油。
本实施例的动力电池箱体的上箱盖和下箱体均可以采用现有技术中的模压成型工艺制成。
实施例7
本实施例的动力电池箱体与实施例3的动力电池箱体的区别仅在于所采用的固化剂为二乙烯三胺，可采用现有技术中的真空辅助成型(VARI)或湿法模压成型工艺制成。
现有技术的动力电池箱体一般是将金属材料制成上箱盖和下箱体，然后采用螺栓进行连接。以钢板为原料时，可以采用冲压的方法制成动力电池箱体，如采用0.6mm钢板冲压成型制成上箱盖，重量在4.5千克左右，采用0.8mm钢板冲压成型制成下箱体，重量在14千克左右；为减轻电池箱体的重量，常以铝合金代替钢板为原料时采用冲压+拼焊的工艺制成动力电池箱体，如采用铝合金板折弯+拼焊工艺制成上箱盖或下箱体，厚度均在1mm左右，重量约为2.6kg，当然也有采用铝合金板折弯+拼焊工艺制成双层结构箱体的，质量在10kg左右；但是采用铝合金材质冲压+拼焊工艺制备电池箱体的成型工艺成本比较高。
对比例1
对比例1的动力电池箱体包括上箱盖和下箱体，上箱盖和箱体通过螺栓进行连接。上箱体采用0.6mm的DC06钢板冲压成型，重量在4.5kg左右；下箱体采用0.8mm的DC06钢板冲压成型，重量在14kg左右。
对比例2
对比例2的动力电池箱体包括上箱盖和下箱体，上箱盖和下箱体也是通过螺栓进行连接。上箱盖和下箱体均以6061铝合金板为原材料采用折弯+拼焊工艺制成。
实验例
实验例是对实施例1～3以及对比例的动力电池箱体的电磁波屏蔽性能、强度、绝缘性和耐腐蚀性进行测试，测试结果见表1。
表1实施例1～3及对比例1～2的电池箱体的性能对比
由表1中数据可知，实施例1～3的动力电池箱体，相较于现有技术的动力电池箱体具有强度高，绝缘性、耐腐蚀性、电磁屏蔽性能能好的优点。
Claims (10)
1.一种动力电池箱体，其特征在于：主要由以下重量份数的原料制成：高分子基体材料40～65份、增强纤维30～70份、阻燃剂35～45份、润滑剂5～10份、填充剂1～2份；所述增强纤维为镀金属纤维或镀金属纤维织物。
2.根据权利要求1所述的动力电池箱体，其特征在于：所述填充剂为滑石粉、石膏粉、石英粉、云母粉中的至少一种。
3.根据权利要求1所述的动力电池箱体，其特征在于：所述镀金属纤维为表面包覆有金属镀层的玻璃纤维、碳纤维、玄武岩纤维、芳纶纤维中的至少一种。
4.根据权利要求1所述的动力电池箱体，其特征在于：所述原料还包括抗氧剂0.05～1份；所述抗氧剂为硬脂酸锌、硬脂酸钡中的至少一种。
5.根据权利要求1所述的动力电池箱体，其特征在于：所述润滑剂为石蜡油、硬脂酸甘油酯、硬脂酸环己酯中的至少一种。
6.根据权利要求1所述的动力电池箱体，其特征在于：所述高分子基体材料为不饱和聚酯树脂、环氧树脂、聚丙烯树脂、聚酰胺树脂、乙烯基树脂中的至少一种。
7.根据权利要求1所述的动力电池箱体，其特征在于：所述阻燃剂为磷氮系无卤膨胀型阻燃剂。
8.根据权利要求1所述的动力电池箱体，其特征在于：所述原料还包括5～10份的其他助剂；所述其他助剂为固化剂、增塑剂、着色剂、抗静电剂中的至少一种。
9.一种如权利要求1所述的动力电池箱体的制备方法，其特征在于：包括以下步骤：取配方量的各原料，混合均匀，成型，制成密封配合的上箱盖和下箱体，即得；所述增强纤维为镀金属纤维；所述镀金属纤维为表面包覆金属镀层的短切纤维。
10.一种纤维增强复合材料，其特征在于：主要由以下重量份数的原料制成：高分子基体材料45～60份、增强纤维30～65份、阻燃剂35～45份、润滑剂5～10份、填充剂1～2份；所述增强纤维为镀金属纤维或镀金属纤维织物。
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| CN110903607A (zh) * | 2019-12-10 | 2020-03-24 | 西安电子科技大学 | 基于镀银碳纤维的电磁屏蔽复合材料的制备方法 |
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| US20230103585A1 (en) * | 2021-10-06 | 2023-04-06 | GM Global Technology Operations LLC | Electromagnetic shielded battery tray with metal coated fiber stitched walls and corresponding manufacturing processes |
| US12046765B2 (en) * | 2021-10-06 | 2024-07-23 | GM Global Technology Operations LLC | Electromagnetic shielded battery tray with metal coated fiber stitched walls and corresponding manufacturing processes |
| WO2023129771A1 (en) * | 2021-12-29 | 2023-07-06 | Bridgestone Americas, Inc. | Structural composites with electromagnetic compatibility for battery enclosures |
| CN116120713A (zh) * | 2023-02-23 | 2023-05-16 | 江苏戴维姆新动能科技有限公司 | 一种电动汽车电池箱体材料的制备方法 |
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