기본 콘텐츠로 건너뛰기

3.7V 리튬 배터리를 충전하려면 어떤 전압을 사용해야합니까? Posted by batterymanufactory.com

Generally, a 3.7V lithium battery needs an overcharge and overdischarge protection circuit board. If the battery does not have a protection board, it can only be charged with a voltage of about 4.2V, because the ideal full charge voltage of the lithium battery is 4.2V, and the voltage may be damaged if it exceeds 4.2V. The battery is charged by this method and the battery status needs to be monitored at all times.

Lithium battery  with protection circuit board can be charged with 5V voltage(4.8V to 5.2V can be used).
3.7V 리튬 배터리 충전

For 3.7V lithium batteries, the charge cut-off voltage is 4.2V and the discharge cut-off voltage is 3.0V. Therefore, when the open circuit voltage of the battery is lower than 3.6V, it can be charged. It is best to use 4.2V constant voltage charging mode, you can not pay attention to the charging time. Charging with 5V voltage is easy to cause danger of overcharging.

The typical lithium battery cell is 3.7V, the voltage when fully charged is 4.2V, the nominal voltage after series connection is only 7.4V, 11.1V, 14.8V ... The corresponding full voltage (that is, the charger no-load output voltage ) Is 8.4V, 12.6V, 16.8V ...


Why is the output of the 3.7V lithium battery charger 5V?


The voltage of the lithium battery is 3.7V, and it is 4.2V when fully charged. The charging voltage must be higher than 4.2V to be fully charged. The normal charger has a dedicated IC to control the charging of the lithium battery. This 5V voltage is only supplied to this IC and related control circuits. The charging circuit controls the charging, not the 5V voltage directly to charging lithium batteries.

Lithium battery charging is relatively demanding. Generally, constant current charging is used to let the battery reach a certain voltage value, and then switch to constant voltage power supply. The constant current charging speed is relatively fast, but the lithium battery cannot be overvoltage, otherwise it will be damaged or even explode. Therefore, when it is close to the highest voltage, it will switch to constant voltage power supply, slowly charge upwards, and charge to 4.2 volts before stopping charging.

Tags:

Posted in 자주 묻는 질문 | 중국 리튬 폴리머 배터리 제조 업체, 리튬 이온 배터리, RC 사러 배터리 팩, 한 LiFePO4 배터리 팩 By

batterymanufactory.com

 

 BENZO 에너지 과학 기술 유한 회사

UFine Technology Co.,Ltd



전화 번호   전화 번호：+86-755-84822012
전화 번호   전화 번호：+86-13538185686

E 메일   E 메일: enzo@batterymanufactory.com
skype  Skype: benzobattery1231@gmail.com

사무실 주소   사무실 주소：  513, Bantian Group Business Center, Dafapu Community, BanTian Street, Longgang area, shenzhen City, China
공장 주소   공장 주소：  Building B1, HanTong Industrial Park , LuoMa Road,QingXi Town, DongGuan, China

         사이트：   bz-battery.en.alibaba.com   /   www.bzbattery.com

 

댓글

댓글 쓰기

이 블로그의 인기 게시물

스마트폰을 위한 어떤 종류의 배터리가 더 좋은가요? Li-Ion 또는 LiPo?

이미지
Did you ever think about why your phone works at all? Probably not. But, if you think about it, all portable gadgets rely on a battery to keep ticking – and some have better battery life than others. That’s why we’re going to take a peek at what keeps your phone ticking and why some batteries do better than others. On the basis of chemistry used for ions carrying electrolyte material, Lithium battery can be classified into Lithium ion and lithium Polymer. Lithium ion battery uses liquid lithium ion as electrolyte while lithium polymer use solid or gelatin like polymers as electrolyte. Lithium ion batteries have high energy density and cost less than lithium polymer. Lithium polymer batteries are light weight and have improved safety . However their cost is high (30% average) as compared to lithium ion. Also the the energy density of Li-Polymer battery compared to Li-Ion Batteries is quite less. Lithium ion batteries tend to lose charge with ageing even when not us...
자세한 내용 보기

What is KC certification? What are the requirements for the factory to pass the KC certification? Posted by batterymanufactory.com

이미지
What is KC certification? The KC (Korea Certification) certification mark signifies compliance with Korea’s product safety requirements for electrical and electronic equipment and components that utilise power from AC 50-1000V. The KC certification procedure for products includes the following steps: 1. Application - The application process involves the submission of an application form and product description. In addition, the manufacture must obtain a certificate of registration. 2. Factory inspection - Production equipment and processes are inspected and audited for compliance with applicable safety criteria. 3. Product testing - The product is tested consistent with the requirements of the applicable safety standard(s). 4. EMC testing - The product is tested for electromagnetic compatibility (EMC) and immunity. 5. Post-certification surveillance - Regular factory inspections and market surveillance are required to verify continued compliance following cer...
자세한 내용 보기

신기술로 인해 배터리가 코발트에서 분리 될 수 있습니다. Posted by batterymanufactory.com

이미지
Lithium-based batteries use more than 50 percent of all cobalt produced in the world. These batteries are in your cell phone, laptop and maybe even your car. About 50 percent of the world's cobalt comes from the Congo, where it's largely mined by hand, in some instances by children. But now, a research team led by scientists at the University of California, Berkeley, has opened the door to using other metals in lithium-based batteries, and have built cathodes with 50 percent more lithium-storage capacity than conventional materials. "We've opened up a new chemical space for battery technology," said senior author Gerbrand Ceder, professor in the Department of Materials Science and Engineering at Berkeley. "For the first time we have a really cheap element that can do a lot of electron exchange in batteries." The study will be published in the April 12 edition of the journal Nature. The work was a collaboration between scientists at...
자세한 내용 보기