Shenzhen cosmetic mirror mobile power manufacturers, mobile power professional knowledge

2017-04-05 11:46:18 Source:Shenzhen YLZ technology co., LTD    Author:引领者-温小编    Visit:698
Mobile power, referred to as mobile power package, also called the "mobile battery", Hongkong Taiwan is also called "action power"; also called "external battery", "battery" and "travel charge", CBA super electronic product development simple name "portable rechargeable mobile charger. Mobile power there is a comparison of the Q name, called charging treasure. Mobile power first appeared in the CES exhibition in 2001, when only in the CES booth booth booth like a booth, is a student with a few AA batteries with a control circuit and then pieced together. At that time, this humble thing, because it can be charged anywhere in the digital products and attract many exhibitors attention. After being discovered by the spies, many people follow the trend, but also to have the new product ---- the power of a large fry a potential. The concept of mobile power is developed with the popularity of digital products and the rapid growth, which is defined as the convenience of portable high-capacity portable power. At present, the function of digital products is becoming more and more diversified, and the use is more frequent. How to improve the use time of digital products and how to exert the function of the digital products becomes more and more important. Mobile power supply is the best solution to solve this problem. With a power supply, it can be in the mobile state at any time and anywhere for a variety of digital products to provide electricity (power supply or charge). Mobile power supply principle mobile power supply is a set of storage, boost, charge management in one portable device. The dielectric storage generally use lithium batteries, lithium batteries because the volume is relatively small, large capacity, wide market circulation, moderate price, is widely used in digital products. The battery voltage between 2.7-4.2V and voltage decreases with the decrease of electricity. While the 2.7-4.2V voltage is not directly to other digital products charge, because lithium voltage of digital products is 2.7-4.2V, the voltage between the same potential is not charging. So the mobile power output power is to boost system, the battery voltage boost 2.7-4.2V to 5V, so you can charge for other digital products, such as mobile phone, tablet computer, MP4, PSP etc.. Of course, the mobile power supply is not a one-time device, it can be used repeatedly hundreds of times. So when the mobile power supply is used, we must charge the mobile power supply. The principle and charging the phone. Connect to the USB 5V computer interface or USB charger to charge the mobile power supply. Therefore, the mobile power must also have a charging management system. Charging management system according to the battery voltage, automatically adjust the charging current. Process: pre charging, constant voltage charging and float charging, etc.. Here are the next components. The power supply of the electric core: commonly used in lithium polymer and lithium, 18650 AAA Ni MH battery. Polymer battery: standard voltage 3.7 V, more shapes, can be customized, with large capacity, inexpensive, widely used, such as: mobile phones, MP4, portable speakers. 18650: lithium battery the standard voltage of 3.7V with small size, large capacity, the standard voltage of 3.7V, mainly used in high-end products such as notebook computer. AAA NiMH battery: standard voltage 1.2V. Relatively small capacity. Should be extensive, household appliances, players, etc.. Boost system: Booster mainstream technology using DC to DC boost mode. Domestic technology conversion efficiency is generally low, generally in 50-70%. Taiwan in 75-80%. The United States will be relatively higher. There is also a step-down scheme, the efficiency is relatively high, but the consistency of the core requirements of high, so rarely used. Charge management system: the current domestic charging management system is relatively mature, intelligent IC monitoring the entire charging process. Mainstream management IC has PT4056, PX40, etc.. Charging time 5000maH about 8 hours. Excessive charge has bad effect on the life of the battery.

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