3results about How to "High temperature controllability" patented technology

This invention relates to a redefinable planar microwave device based on vanadium dioxide phase change thin film, belonging to the field of microwave device technology. It includes a phase change patch array, a dielectric substrate, and a metal ground plane connected in sequence. The phase change patch array comprises several uniformly arranged phase change thin film blocks, with conductive sponges between adjacent blocks. One end of the phase change patch array is connected to a transmission line and an input port, and the other end is connected to a reconfigurable transmission line and a reconfiguration port. The phase change thin film blocks, the transmission line, and the reconfigurable transmission line are all made of vanadium dioxide. When the transmission line, the reconfigurable transmission line, and the phase change thin film blocks are heated to 68–72°C in different combinations, the vanadium dioxide undergoes a phase transition, changing from a non-metallic state to a metallic state. At this time, the device surface structure is divided into a phase change region and a non-phase change region. The phase change region effectively replaces the microstrip metal, forming two types of A-shaped planar microstrip patch antennas, two types of microwave planar serpentine inductors, and a planar microstrip capacitor, respectively, thus creating redefinable planar microwave devices.

The application discloses a production system of a negative pole post and relates to the technical field of negative pole posts, which comprises a first carrier for supporting a copper sheet, a second carrier for supporting an aluminum post, an acting piece for heating the copper sheet, a driving source for driving the second carrier to move the aluminum post towards the copper sheet, so that the aluminum post and the copper sheet are in contact and are pressed together to form a negative pole post blank, a stamping and straightening composite mechanism for straightening the processed negative pole post blank, a tensile test tool and / or a tear test tool for testing the straightened negative pole post blank. The application integrates the supporting, heating, pressing, straightening and testing processes through the integration of various components, and a complete negative pole post automatic production system is constructed, so that the negative pole post can be produced on a large scale and economically.

This invention provides a unit delivery box and a logistics delivery vehicle having the same. The unit delivery box includes a storage compartment, an energy storage compartment, an energy storage device located in the energy storage compartment, an energy supply component, and a controller. The energy supply component includes an energy supply duct communicating with the storage compartment and an energy supply fan that drives air to circulate between the energy supply duct and the storage compartment. Part of the energy supply duct is arranged adjacent to the energy storage compartment, and a heat-conducting plate is formed between the energy supply duct adjacent to the energy storage compartment and the energy storage compartment. The energy supply fan is communicatively connected to the controller.