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1、美国:作为世界上最大的汽车生产和消费国,美国较早开展了电动汽车技术研究和开发。目前,美国纯电动汽车用蓄电池的研究重要集中在锂离子电池,锂离子电池相关专利数量占动力锂电池专利数量?0%以上,其次为铅酸电池、镍氢电池、空气电池和钠电池等。从世界范围内的专利申请的总量来看,截?010年六月,美国的纯电动汽车用蓄电池及其管理系统相关专利申请数量位于日本之后,排名第二。从美国国内的专利申请量来看,在和纯电动汽车用蓄电池及其管理系统有关的专利申请中,来自日本申请人的专利最多,接近总量?0%,而来自美国申请人的专利申请数量次于日本?2、日本:目前,日本纯电动汽车用蓄电池的研究重要集中在锂离子电池,其次为铅酸电池、镍氢电池和钠电池等。从世界范围内的专利申请的总量来看,日本拥有的纯电动汽车用蓄电池及其管理系统相关专利申请数量最多。从日本国内的专利申请量来看,在和纯电动汽车用蓄电池及其管理系统有关?782件专利申请中,其中超?0%的专利申请来自日本申请人。无论是从世界专利申请的拥有量角度,还是从日本专利申请中日本申请人所占的份额角度,日本在纯电动汽车用蓄电池及其管理系统领域都是实力最强者,掌控着绝大部分专利技术?3、韩国:当前韩国汽车产量和出口量分别名列全球第五位和第四位。韩国纯电动汽车用蓄电池的研究重要集中在?[…]]]></description> <wfw:commentRss>http://gzchisheng.com/archives/15245/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> </channel> </rss>