Abstract:     "Deploying the innovation chain around the industry chain and laying out the industry chain around the innovation chain" is a new requirement for China′s industrial development. Characterizing the global pattern of S&T innovation can provide suggestions for China′s technological development. Few existing studies comprehensively describe the pattern of S&T innovation from the perspective of industrial chain. Taking the lithium-ion battery industry as a case study, this paper combined topic mining and doublelayer network model, and characterized the global S&T innovation spatiotemporal pattern of the lithium-ion battery industry chain by comprehensively considering the citation relationship between science and technology from the industrial chain view. The findings are as follows: (1) China′s ranking of technological innovation intensity is the fifth, slightly lower than Germany. However, there is a significant gap compared to the top three countries, the United States, Japan, and South Korea. (2) From the perspective of knowledge inheritance, the overall knowledge contributions of science and technology to technology of the United States ranks first in the upstream, midstream, and downstream, and far exceed that of Japan in second place. China′s overall knowledge contributions of science and technology to technology in the recycling of lithium-ion batteries is relatively high, which means it has a high technological influence. (3) The knowledge contribution strength of Chinese patents only appears in the top five of battery packs from a genetic perspective, and is ranked the fifth, indicating that China′s international technological influence in lithium-ion battery industry chain needs to be improved. This study will enrich the theoretical framework of the research on the pattern of global innovation, and the empirical results will verify the validity of the research framework, which can provide useful reference for China to coordinate S&T innovation and refine the layout of industrial resources.

Key words: global innovation pattern, industrial chain, science-technology (S&T), double-layer network, lithium-ion battery