The most practical fiber battery further promotes intelligent clothing

According to a report by the Canadian media on February 9, 2012, the Montreal Institute of Technology in Canada has developed a battery that can be sewn into clothes. Researchers claim that the battery's lightness and flexibility make it possible to further advance the practicality of smart clothing and wearable electronics.

Since the emergence of intelligent clothing in the market, it has always been a hot spot in the textile and garment industry, and it is also a major difficulty. As intelligent clothing is people-centered, human needs have become the focus of the industry. Many companies around the world are doing their utmost to develop a wide range of intelligent clothing. The reason is that clothing is not only a product that is in direct contact with the human body, such as health care, human body protection, comfort, easy walking and sports, thermal insulation and aesthetics, but also one of the most potential areas of development in all manufacturing industries, and it has also become One of the most sensitive industries in which humans protect the environment. Therefore, there are more and more products about intelligent clothing, and the scope of intelligent clothing is more and more extensive. However, the power required for intelligent clothing is difficult to solve, and it needs to be wearable.

In the past, although a wearable battery pack has been developed, it is still unsatisfactory, and the weight and volume are unacceptable. Such as continuous power, charging and emergency power supply are difficult to solve effectively. Since the problem of wearable batteries has not been properly solved, the problem of wearable power has become a bottleneck in the development of intelligent clothing.

Intelligent clothing has become a must-have for modern soldiers. They need to wear a variety of devices. And these devices require power. In 2007, the US Defense and Engineering Technology Institute (DDRE) invested $1 million to reward people who invented effective wearable power systems. Moreover, they have developed standards for wearable power systems that provide soldiers with adequate and efficient power supply and are lightweight, small or thin. The Pentagon also released a news request that the power system can simultaneously activate radios, night vision goggles, global satellite locators, portable monitors, and the wearer's combat power cannot be reduced after wearing such power supplies. However, the wearable power system developed at the time was heavier than the weapons and ammunition carried by the soldiers and therefore not suitable for modern warfare. In February 2009, the first generation of watch-type batteries was introduced, which could charge wireless phones and portable MP3/MP4 players, so at a time in a small place in the United States, 10,000 were sold in two weeks. Later, the West developed the G184-type rechargeable battery, which is designed and applied very conveniently. It can be washed and smashed. It has 6 kinds of power supply holes, which are close to the power requirements of intelligent clothing. Another company has even developed a micro-generator that can be installed on the sole and can generate electricity.

Intelligent clothing, also known as E-textiles, has gradually become a fashion for social development, so wearable power supplies are the key to making intelligent and practical commercial. The wearable power supply developed in Canada is made from a thin layer of fiber material that is integrated into the fabric with other fibers. For its wearability, Canadian scientists infused lithium titanate between the polyethylene oxidizing electrolyte layers and used it as an anode, and then infused lithium iron phosphate as a cathode. Since these three layers are all thermoplastic materials, they are directly woven into the textile fabric as fiber materials, and integrated with other fibers. Thus, the power generated by the thermoplastic material can directly generate heat, and the thin circuit layer constitutes a current band, and the flow distance can reach 10 cm, width 1 cm.

Thanks to the multi-arm hand loom, the textile electrode uses electrically conductive yarns that can be directly attached to other parts of the garment. The cotton thread in it ensures that the battery surface is attached to the surface of the fabric.

The head of the research team believes that this wearable battery is the first in the world, and the power generated by the soft lithium battery can be transported to other parts like a fluid. Canadian scientists plan to apply this wearable battery technology first to the production of weaving backpacks and medical surveillance garments, and then sell their patents to more intelligent apparel businesses.  

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