u003cpu003eAnalysis of Lithium Ion Batteriesu003cpu003e Polymer ionic batteries are not the latest generation of lithium ion batteries, but they are definitely a generation with very mature technology and application. According to the different electrolyte materials used in lithium-ion batteries, Li-ion batteries can be divided into liquid lithium-ion batteries (referred to as L old) and polymer lithium-ion batteries (referred to as LIP). The positive and negative materials used in polymer lithium-ion batteries are the same as liquid lithium ions, and the working principles of the batteries are basically the same. The main difference between them lies in the difference in electrolytes. Li-ion batteries use liquid electrolytes, while polymer lithium-ion batteries are replaced by solid polymer electrolytes. The forms of this polymer are also diverse, and most of them currently use polymer colloids. Electrolyte. u003c/pu003eu003cpu003e The existing polymer physical ion batteries can be divided into three categories: solid polymer electrolyte physical ion batteries; gel polymer electrolyte lithium ion batteries; and polymer cathode materials lithium ion batteries, which are also the most common The polymer lithium ion battery, which uses conductive polymer as the positive electrode material, can cover three times that of a lithium battery pack
. Since solid electrolytes are used instead of liquid electrolytes, compared with liquid lithium-ion batteries, polymer lithium-ion batteries have the advantages of being thinner, arbitrarily large and arbitrarily shaped, and will not cause leakage, combustion, explosion, etc. Therefore, it is possible to use aluminum-plastic composite film to make the battery case, thereby increasing the specific capacity of the entire battery; polymer lithium-ion batteries can also use polymer as the cathode material, and its quality and performance ratio will be better than that of current liquid lithium-ion batteries Increase by 30%. u003c/pu003eu003cpu003eThe plasticity of polymer lithium-ion batteries can make mobile devices lighter and thinneru003c/pu003eEmerging charging methodsu003cpu003e Wireless charging technology is a new power transmission technology that does not rely on wire connections and does not require Any physical connection directly powers the electronic device. The transmitter and the coil integrated or attached to the electronic product form a complete wireless charging system. Within a certain range (currently within a distance of several centimeters), the electrical energy is transmitted from the transmitter to the corresponding receiver. u003c/pu003eu003cpu003e Most current wireless charging systems rely on electromagnetic induction between coils to charge the device, which is the so-called Qi standard. Of course, a wireless charging station that can be connected to public power is also essential. At the same time, mobile phones that meet the Qi standard need to be equipped with a control chip. The working distance in this way is too short, the device needs to be placed on the charging stand, and it will also consume a lot of power. After a long period of development and improvement, Qi's charging efficiency is higher. Today, Qi's charging efficiency is very close to that of wired charging methods, reaching more than 70%. u003c/pu003eu003cpu003e Qi, as the world's first standardization organization to promote wireless charging technology, has launched a 'wireless charging' standard that has the characteristics of convenience and versatility. Products of different brand brands, as long as there is a Qi logo, Both can be charged with a wireless charger. At the same time, it also breaks the technical bottleneck of the versatility of wireless charging. The formulation of the Qi standard makes wireless charging have a unified technical specification, ensuring the compatibility of the same charger with multiple brands and multiple products. The Wireless Charging Alliance was established in 2008 in February and has 59 members as of August this year, including companies such as Samsung, LG, Nokia, and Philips. u003c/pu003eu003cpu003e Movable coils, multi-coils, and magnet attraction methods form three wireless charging solutions in the Qi standard. Among them, Sanyo Electromechanical's movable coil solution uses a motor to drive the primary coil and the secondary coil to achieve the same position. The charging efficiency reaches the highest value in the Qi standard. ConvenientPower's multi-coil matrix starts charging the coil closest to the device when charging the mobile device. This solution is suitable for the battery life of multiple mobile devices. Magnet attraction is the cheap wireless charging solution proposed by Fulton. u003c/pu003eu003cpu003eu003c/pu003eu003cpu003eNote:u003c/pu003eu003cpu003eThe idea of u200bu200bwireless power supply has appeared as early as a hundred years ago. In 1890, the great Geek Nicholas. Tesla, the founder of the modern alternating current system, began to conceive a wireless power supply method, and finally put forward a grand scheme—using the earth as an inner conductor to establish a low-frequency resonance of about 8 Hz between the earth and the ionosphere, and reuse Electromagnetic waves surrounding the earth's surface transmit electricity over long distances. u003c/pu003eu003cpu003eu003c/pu003eu003cpu003eu003c/pu003eSubvert the traditional concept of batteryu003cpu003e Polymer lithium ion battery has high working voltage, small volume, light weight, high energy, no memory effect, no The characteristics of pollution, low self-discharge, and long cycle life are currently widely used in various electronic devices. However, under high-intensity use, battery life has gradually become weak, and the charging speed can not keep up with the demand at all, except for the traditional In fact, we can still use diversified batteries in the future. u003c/pu003eu003cpu003e The flexible screen that was exposed not long ago has become a hot spot for search. It is rumored that the first smart phone with a flexible screen is expected to debut in 2014. However, the screen can only ensure that the screen of the device is more flexible, and to achieve the bending of the entire phone, it is not enough to rely on the screen alone. The built-in battery is also the key, because the lithium battery pack at this stage cannot be bent at will. It seems that the flexible solar battery SuperBattery is much more reliable when used in smart phones. It can be folded and bent at will, and it is very convenient to charge. It can be charged by unfolding it in the sun. While solving the flexibility problem, it also solves the charging life. The problem. u003c/pu003eu003cpu003eThe flexible solar cell super battery is just a prototype at this stage, and how to use it needs further development. u003c/pu003eu003cpu003eu003c/pu003eu003c/pu003eu003c/pu003e
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