The hottest one finally has a lithium battery smar

2022-10-20
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Finally, there is a lithium battery smart watch that can "bend" and "straighten". The endurance of smart watches has always been a thorny problem. Once the smart watch battery and other electronic components are damaged, they need to replace the cable. They are crowded in the narrow space behind the watch screen, which not only occupies most of the available space, but also can provide very limited energy. This has become an obstacle in the development of smart watches

professor jianghanqing, who is in charge of flexible battery research at the school of mechanical and aerospace engineering of Arizona State University, wants to solve this problem. They found that the standby time of electronic devices such as smart watches will also become longer through a stretchable and flexible battery

by applying a folding technology of Japanese hand origami, researchers found that they can make conventional lithium-ion batteries stretchable and bendable, so as to put them into the strap calmly and obtain more energy storage space. In addition to improving the performance of smart watches, this method is compatible with the standard manufacturing process, and can make batteries more suitable for various other wearable electronic products, such as smart bracelets that track health-related data

at present, smart watches generally show a short battery life. The battery life of Apple watch is only about one day. If you use the application power frequently, it can only last for a few hours. Battery durability has become a weakness of many wearable devices, and new technology can double the battery life

researchers use the folding battery they developed to power Samsung smart watches. The results show that this kind of battery can be built into the elastic strap, which can be bent and stretched without affecting the battery performance

so magical

in the past decade, researchers have made great progress in the design of stretchable electronic products. At present, they can adapt to various curved or movable surfaces and shapes, such as human body surface. At present, it has become the second largest metal material used in the industry, second only to steel. However, he has designed three futures for the graphene industry: carbon fibers mostly bring great inconvenience to people, and elastic materials are used, which are not directly compatible with existing battery production facilities

the inspiration of applying origami technology to batteries comes from a special folding method called Miura folding, which is very similar to what he saw in nano silicon. When attached to the surface of elastic rubber material, it can be bent and stretched. Last year, he and his colleagues demonstrated a foldable lithium-ion battery based on Miura folding. But in practical application, this design has great limitations, because the battery only has folded state and unfolded state, and its uneven surface affects the wearing comfort in the folded state, he said

in order to make the shape of the battery compatible with more wearable devices, the team decided to adopt paper cutting technology and add cutting into it. The results show that the transverse cutting of each material layer can make the battery stretch and bend at will. Unlike the previous origami technology design, the rotation of the shear can enable the battery to stretch and fold without affecting its thickness

in addition to showing the performance of the battery in a real smart watch, researchers also tested the performance of the battery in the state of multiple cycles of extrusion and tension. The results showed that multiple entanglements in the process would not lead to breakage. Jiang said that the goal of the team is to commercialize this technology, and now they are working to improve battery packaging and solve potential safety hazards. He also said that paper cutting technology is also applicable to other types of electronic devices other than batteries, such as sensors and supercapacitors

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