Internet of things: the Internet of things is a network that uses communication technologies such as local network or Internet to connect sensors, controllers, machines, people and things in new ways to form the connection between people and things, things and things, and realize informatization, remote management and control and intelligence. Now many fields are developing their own industrial applications and closed-loop applications around the Internet of things. In the successful cases of these industries, a large number of primary lithium batteries can be widely seen, including GPS navigation, active RFID and so on.