目前,我国对纺织品中甲醛含量的考核依据是国家强制性标准《国家纺织产品基本安全技术规范》(GB 18401—2010)和Oeko-tex Standard 100的要求,而科德宝宝翎衬布(南通)有限公司生产的产品也是严格按照以上标准和要求,对纺织品甲醛含量的...目前,我国对纺织品中甲醛含量的考核依据是国家强制性标准《国家纺织产品基本安全技术规范》(GB 18401—2010)和Oeko-tex Standard 100的要求,而科德宝宝翎衬布(南通)有限公司生产的产品也是严格按照以上标准和要求,对纺织品甲醛含量的检测采用的是Oeko-tex Standard 100中的JIS L1041方法,对纺织品中游离甲醛的测定采用的是水萃取法。为了准确测得纺织品中游离甲醛的含量,乙酰丙酮配制液的配制和时效性显得尤为重要。文章对甲醛测试过程中发现的一些实际问题进行了初步探讨。展开更多
This paper describes a concept for an independent and redundant safety concept for Lithium batteries in Electric and Hybrid Electric Vehicles. This concept includes an emergency cooling system based on pressurized car...This paper describes a concept for an independent and redundant safety concept for Lithium batteries in Electric and Hybrid Electric Vehicles. This concept includes an emergency cooling system based on pressurized carbon dioxide (CO2). Since carbon dioxide (CO2) is a possible medium of future mobile air conditioning (MAC) systems, the MAC system can be utilized for the one-time emergency cooling described in this paper. In the first part of the paper, some major safety aspects of automotive Li batteries are highlighted. In the second section, the paper describes a technical approach, how these batteries can be made safer. Pressurized CO2, which is a promising candidate for cooling liquids used in future mobile air conditioning (MAC) systems, is used to effectively cool down an overheating or up-heating battery in a critical state. The safety system thereby is not based on an electrical effect, but on a direct and fast-reacting thermal conduction, avoiding a thermal runaway of individual cells. The application of the proposed system is to act preventively just before the thermal runaway gets uncontrollable. In this case, the limited amount of CO2, which is available in the MAC system, fulfils the emergency cooling requirements. The combination of standard car components for the concept leads to an only moderate increase of the total weight and the additional system costs. Therefore, the described system might be of interest for car, battery and air conditioning system producers. This paper explains that the synergetic combination of CO2-based MAC systems and Li-based batteries is an innovative approach to improve environmental compatibility in future vehicles. The concept is proven experimentally on a lab scale with battery cells and battery packs consisting of four serially connected cells, respectively.展开更多
文摘目前,我国对纺织品中甲醛含量的考核依据是国家强制性标准《国家纺织产品基本安全技术规范》(GB 18401—2010)和Oeko-tex Standard 100的要求,而科德宝宝翎衬布(南通)有限公司生产的产品也是严格按照以上标准和要求,对纺织品甲醛含量的检测采用的是Oeko-tex Standard 100中的JIS L1041方法,对纺织品中游离甲醛的测定采用的是水萃取法。为了准确测得纺织品中游离甲醛的含量,乙酰丙酮配制液的配制和时效性显得尤为重要。文章对甲醛测试过程中发现的一些实际问题进行了初步探讨。
文摘This paper describes a concept for an independent and redundant safety concept for Lithium batteries in Electric and Hybrid Electric Vehicles. This concept includes an emergency cooling system based on pressurized carbon dioxide (CO2). Since carbon dioxide (CO2) is a possible medium of future mobile air conditioning (MAC) systems, the MAC system can be utilized for the one-time emergency cooling described in this paper. In the first part of the paper, some major safety aspects of automotive Li batteries are highlighted. In the second section, the paper describes a technical approach, how these batteries can be made safer. Pressurized CO2, which is a promising candidate for cooling liquids used in future mobile air conditioning (MAC) systems, is used to effectively cool down an overheating or up-heating battery in a critical state. The safety system thereby is not based on an electrical effect, but on a direct and fast-reacting thermal conduction, avoiding a thermal runaway of individual cells. The application of the proposed system is to act preventively just before the thermal runaway gets uncontrollable. In this case, the limited amount of CO2, which is available in the MAC system, fulfils the emergency cooling requirements. The combination of standard car components for the concept leads to an only moderate increase of the total weight and the additional system costs. Therefore, the described system might be of interest for car, battery and air conditioning system producers. This paper explains that the synergetic combination of CO2-based MAC systems and Li-based batteries is an innovative approach to improve environmental compatibility in future vehicles. The concept is proven experimentally on a lab scale with battery cells and battery packs consisting of four serially connected cells, respectively.
