Research On Cooperative Innovation Network And Innovation Performance Of Enterprises In The Field Of New Energy Vehicle Based On Key Technology Chain

In recent years,China’s new energy vehicle industry has achieved positive results in the key technical links such as drive and transmission technology,battery technology,vehicle integration and charging supporting technology.The emerging cooperative innovation behaviors of enterprises in various technology chains have formed a large-scale cooperative innovation network.However,there are still core technical barriers to be broken through,and the innovation performance of enterprises in various technical links needs to be improved.The reason is that the overall coordination of all kinds of technology cooperation innovation network is not high,which affects the overall quality of new energy vehicle products,and then affects the innovation performance of enterprises in the whole new energy vehicle field.Therefore,it is very important to build and improve the cooperative innovation network of all kinds of technical links,strive to narrow the gap of the improvement degree of the cooperative innovation network of enterprises in different technical links,and improve the overall coordination of the network for breaking through the core technical barriers and improving the innovation performance of enterprises.However,the existing research can not give answers to the following questions: "what are the structural characteristics of the cooperative innovation network formed by the cooperative innovation behavior of enterprises in the same technology link or different technology links","how is the overall coordination of the cooperative innovation network of each technology link" and "what is the relationship between them and the innovation performance of enterprises ".In order to promote more efficient cooperative innovation and coordinated development of enterprises in each technology chain,this paper,from the perspective of key technology chain,explores the characteristics of cooperative innovation network of enterprises in each technology chain and its impact on the innovation performance of enterprises,analyzes the composite coordination of sub networks formed on the basis of cooperative innovation of enterprises in each key technology chain,identifies the key influencing factors,discusses the relationship between compound coordination and the innovation performance of enterprises,and puts forward the optimization path of cooperative innovation network.First of all,based on the perspective of patent cooperation,this paper deeply analyzes the current situation of cooperative innovation of new energy vehicle enterprises in China.According to the joint patent application data,the cooperative innovation network of new energy vehicle enterprises is constructed based on the key technology chain,and the structural characteristics of the whole network and the sub network of each technology chain are described in detail.On the whole,the overall network has emerged a growth trend,but the overall connectivity of the network is not high,the structure of battery technology sub network is simple,and the structure of drive and transmission technology sub network and vehicle integration and charging supporting technology sub network is relatively complex.Secondly,this paper uses regression analysis to analyze the relationship between the network structure characteristics of each technology chain and the innovation performance of the enterprise.The research results show that both structural hole and network centralization have a significant positive effect on the innovation performance of enterprises,and there is inverted U-shaped relationship between network tie strength and the innovation performance of enterprises.Maintaining appropriate relationship strength can help enterprises improve their innovation performance.Thirdly,an in-depth analysis is carried out from the perspective of the composite coordination of the key technology chain sub network.By constructing the measurement model of composite coordination degree of sub network based on key technology chain,the composite coordination degree of sub network is calculated.The results show that the overall composite coordination effect of each technology chain sub network in the field of new energy vehicles is not good,and it is in a low degree of overall coordination state.In order to further understand which factors have great influence on the composite coordination of sub networks,bayesian network analysis method is used to analyze the key influencing factors of the composite coordination of sub networks.The research result shows that,comparatively speaking,the coordination of battery technology sub network has a great influence on the composite coordination of the whole network.At the same time,this paper also makes an empirical test on the correlation between composite coordination and the innovation performance of enterprises,and the result shows that composite coordination has a positive effect on the innovation performance of enterprises.New energy vehicle enterprises should give full play to the complementary functions of breakthrough and gradual innovation to realize the effective connection and coordinated development of various technological chains.Finally,on the basis of the above research,combined with theory and practice,from the characteristics and composite coordination of key technology chain sub network,this paper puts forward the optimization path of enterprise cooperative innovation network in the field of new energy vehicles,so as to promote the innovation efficiency,coordinated development and overall competitiveness of enterprises in each technology chain.