Lithium battery charge and discharge requirements of what?

Source: 2020 - 04 - 10 20:59 hits: lithium battery charge and discharge requirements of let's talk about lithium battery charging requirements. According to the structure characteristics of lithium-ion batteries, end of maximum charging voltage is 4. 2 v, not overcharge, otherwise the battery will be scrapped because of the positive lithium ion loss too much. The charging demand is high, can be used for constant current, constant voltage charger to charge. Constant current charging is in commonly 4. After 2 v/node into a constant voltage charging. When constant voltage charging current dropped to 100 ma, should stop charging. Charging current ( mA) = 0. 1 ~ 1. Five times the battery capacity, such as 1350 mah battery, the charging current can be controlled between 135 ~ 2025 ma) 。 Conventional charging current can choose about 0. Five times the battery capacity, charging time is about 2 - 3 hours. Talk about lithium battery discharge requirements. Due to the internal structure of lithium batteries, lithium ion can't all mobile during the discharge to the anode, and lithium ion part must be stored in the negative electrode, in order to ensure that can be successfully embedded lithium ion channels in the charge. Otherwise, the battery life shortened accordingly. In order to ensure some lithium ion continue in graphite layer after discharge, it is necessary to strictly limit the minimum voltage discharge end, namely the lithium battery can't discharge. Discharging termination voltage is commonly 3. 0 v/node, minimum not less than 2. 5 v/node. The battery discharge time related to the battery capacity and discharge current. If there is a 1000 mah battery, shall strictly control the discharge current within the 3 a, otherwise it will damage the battery. Sells on the market at present, all of the lithium battery has a charge and discharge protection plate seal. As long as the external charge and discharge current can be controlled. So, in the use of mobile phone batteries, especially when charging, what should be correct? Avoid charging in unsafe environment for mobile phones and other electronic devices is a big problem in travel. In the survey, many of the participants said they in gas station, shopping center, restaurants and even public toilets to devices. However, in these extraordinary charging environment may lead to all sorts of unexpected problems. When traveling, you should prepare some more batteries, and properly stored, in case of mobile phone is power off. If your phone can't replace the battery, the use of portable power supply is also a convenient option, especially in the absence of local charge. Don't listen to the so-called battery maintenance method you've probably heard such things: leave it charging all night; Make sure to fully charge and repeated use, It is best to completely run out of battery, then charge is the best way to charge for these claims? In fact, most of these Suggestions is wrong, at least for the lithium ion battery we use today. Completely run out of battery power, for example, actually will shorten the battery life. But according to the survey, about 33% of users when they began to use when the battery capacity is less than 10% of cell phone. When using electronic equipment, should try to maintain soc between 40% and 80%, avoid frequent and completely discharge. In addition, let your devices ( Charging overnight) Also is not necessarily a bad thing, because most of the device will automatically stop charging after fully charged. Finally, you should make sure that the equipment at the time of charging is cool, if the battery is too hot, to immediately stop charging. Don't need to turn it off now, as to whether it is necessary to shut down and recharge, there are two main views. Switch machine, on the other hand, tend to be more easy to wear and tear parts, faster charging. In fact, the switch element to the modern electronic equipment is not much impact. But for devices use lithium ion battery, charging when they are closed, when they are full of electricity can reach a low saturation current, avoids the sustained pressure from the battery. When it starts, however, most of the equipment are full of electricity, current bypass batteries for power equipment directly. In short, equipment closed it doesn't matter when or how long it will take.