Lithium battery and mobile life

Polymeric physics ion batteries are not the latest generation of lithium-ion batteries, but they are definitely technology and use very mature generations. According to the different electrolyte materials used in lithium-ion batteries, lithium-ion batteries can be divided into two categories: liquid lithium-ion batteries(abbreviated as L) and polymer lithium-ion batteries(abbreviated as lips). The positive and negative materials used in polymer lithium-ion batteries are the same as liquid lithium ions, and the principle of battery operation is basically the same. The main difference between them is the difference in electrolytes. Lithium-ion batteries use liquid electrolytes, while polymer lithium-ion batteries are replaced by solid polymer electrolytes. The polymer forms are also diverse. Most of them currently use polymer colloidal electrolytes.

The existing polymer ion batteries can be divided into three categories: solid polymer electrolyte ion batteries; gel polymer electrolyte lithium-ion batteries; and polymer cathode materials for lithium-ion batteries, and the most common polymer lithium-ion batteries, It uses a conductive polymer as the positive electrode material, which can cover three times as much as a lithium battery. Since the solid electrolyte is used instead of the liquid electrolyte, the polymer lithium-ion battery has the advantages of being thinner, arbitrarily aread and arbitrarily shaped, and does not cause leakage, combustion, explosion, etc., compared with the liquid lithium ion battery. The problem is that the aluminum-plastic composite film can be used to manufacture the battery casing, thereby increasing the specific capacity of the entire battery; the polymer lithium-ion battery can also use the polymer as the positive electrode material, and its mass-capacity ratio will be higher than that of the current liquid lithium-ion battery. Increase by 30%.

Emerging charging method

Wireless charging technology is a new power transmission technology that does not rely on wire connections and does not require any physical connection to directly power electronic devices. The transmitter and the integrated or attached coils on the electronic product form a complete wireless charging system. Within a certain range (currently within a few centimeters), electrical energy is transmitted from the transmitter to the corresponding receiver.

Most current wireless charging systems rely on electromagnetic induction between the coils to charge the device, which is the gas standard. Of course, a wireless charging station that can be connected to a public power supply is also essential. At the same time, a control chip is required for a mobile phone that meets the gas standard. In this way, the working distance is too short, and the device needs to be placed on the charging stand and also consumes a large amount of power. After a long period of development and improvement, the charging efficiency of the gas is higher. Nowadays, the charging efficiency of the gas is very close to that of the wired charging method, reaching more than 70%.

As the world's first standardization organization to promote wireless charging technology, the “Wireless Charging” standard has the characteristics of convenience and versatility. Products of different product brands can be charged with a wireless charger as long as they have a gas mark. At the same time, it has also broken the technical bottleneck of wireless charging "universality". The formulation of Qi standard has made wireless charging have a unified technical specification to ensure the compatibility of the same charger for multiple brands and multiple products. The Wireless Charging Alliance was established in February 2008. By August of this year, there were 59 members, including Samsung, LG, Nokia, Philips, and other companies.

The movable coil, multi-coil and magnet attraction form three wireless charging solutions in the gas standard. Among them, Sanyo Electromechanical's movable coil scheme uses the motor to drive the primary coil and the secondary coil position to match, so that the charging efficiency reaches the gas standard. The highest value in .ConvenientPower's multi-coil matrix, which initiates the charging of the nearest coil to the device when charging the mobile device, is suitable for the battery life of multiple mobile devices. Magnet attraction is an inexpensive wireless charging solution proposed by Fulton.

Note:

The idea of wireless power supply has been around for more than a hundred years. In 1890, the great geek Nikola Sla, the founder of the modern AC system, began to conceive a wireless power supply method, and finally proposed a grand scheme to use the Earth as an inner conductor to establish a low-frequency resonance of about 8 Hz between the Earth and the ionosphere. Electromagnetic waves that surround the Earth's surface transmit power over long distances.

Subvert the traditional concept battery

The polymer lithium-ion battery has the characteristics of high working voltage, small volume, light weight, high energy, no memory effect, no pollution, small self-discharge, and long cycle life. It is widely used in various electronic devices, but it is high. Under the use of strength, the battery's endurance gradually appears shortboard, the charging speed cannot keep up with the demand, in addition to the traditional polymer lithium-ion battery, in fact, we can use a variety of batteries in the future.

The flexible screen that was exposed not long ago has become a hot spot for search. It is reported that the first smartphone with a flexible screen is expected to be unveiled in 2014. However, the screen can only ensure that the screen of the device is more flexible. To achieve the bending of the whole mobile phone, it is not enough to rely on the screen. The battery built in the body is also the key because the current lithium-ion battery cannot be bent at will, it seems flexible solar energy. The battery SuperBattery is very reliable on the smartphone. It can be folded and bent at will, and it is very convenient to charge. It can be charged in the sun. It solves the problem of flexibility and solves the problem of charging life.

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