Monitoring Innovation in Electrochemical Energy Storage Technologies: A Patent-based Approach
Monitoring Innovation in Electrochemical Energy Storage Technologies: A Patent-based Approach
复制标题
DOI：
10.1016/j.egypro.2014.12.440
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Simon Müller;Philipp G. Sandner;I. Welpe
中科院分区：
文献类型：
--
作者：
Simon Müller;Philipp G. Sandner;I. Welpe
由于在具有可再生能源的分散式系统中平衡不稳定性的适用性，已经在几项研究中分析了电化学储能的可能性，所有这些研究都强调了改进相关技术经济参数的必要性。特别是，非常需要降低每个循环的成本，这可以来自于更具成本效益的制造方法的创新，更高的充电/放电序列耐久性或更高的容量。将专利申请作为一个衡量标准，可以让我们确定必要的技术进步是否确实在发生，因为强制公布基础发明为隐藏的研发活动提供了机会。我们的论文贡献了文献，汇编了与新型合作专利分类（CPC）中重要电池类型相关的技术类别，可用于识别竞争技术的相关专利申请。利用全球专利统计数据库（PATSTAT），我们发现，有前途的技术已经显示出越来越多的专利数在最近几年。例如，与再生燃料电池（如氧化还原液流电池）相关的专利申请数量从2009年到2011年翻了一番。尽管如此，与锂相关的技术专利申请量仍然没有受到挑战。该领域的专利申请仍在增长，这表明改进模块的推出将继续。通过引用分析，我们确定了相关候选技术的重要专利和组织。我们的研究强调，电化学存储，特别是基于锂的技术，将在未来的能源系统中发挥越来越重要的作用。
Due to the suitability to balance the intermittency in decentralized systems with renewable sources, electrochemical energy storage possibilities have been analyzed in several studies, all highlighting the need for improvements in relevant techno-economic parameters. Particularly a reduction in the costs per cycle is much needed, which could either come from innovation in more cost-efficient manufacturing methods, a higher endurance of charge/discharge sequences or higher capacities. Looking at patent applications as a metric allows us to determine whether the necessary technological progress is indeed occurring, as the mandatory publication of the underlying inventions provides access to otherwise hidden R&D activities. Our paper contributes to the literature with a compilation of technological classes related to important battery types in the novel Cooperative Patent Classification (CPC), which can be used to identify relevant patent applications of the competing technologies. Using the worldwide patent statistical database (PATSTAT), we find that promising technologies have been showing increasing patent counts in recent years. For example, the number of patent applications related to regenerative fuel cells (e.g. redox flow batteries) doubled from 2009 to 2011. Nevertheless, the volume of patent filings in technologies related to lithium remains unchallenged. Patent applications in this area are still growing, which indicates that the introduction of improved modules will continue. Using citation analysis, we have identified important patents and organizations for relevant candidate technologies. Our study underlines that electrochemical storage, and in particular lithium-based technologies, will play an increasingly important role in future energy systems.