Correct discharge method of lithium battery

Lithium battery is an energy storage conversion device that is increasingly widely used. Because of its excellent electrochemical performance, it realizes a small-medium-large market application scenario that keeps pace with the times. When we talk about lithium batteries, using the method correctly usually refers to small applications, that is, consumer electronics, such as smartphones and laptops. Because large and medium applications are based on small application technologies, small applications have common characteristics, while large and medium applications are complex. Usually, medium applications are in new energy vehicles, which are generally called power batteries; large applications are usually On the base station, we generally call it an energy storage battery. Therefore, when we talk about "how to use lithium batteries," it aligns with people's habitual knowledge to limit lithium batteries to small applications.

The working principle of a lithium battery is nothing more than charging to store energy, and discharging is converted into other energy and released. When it is neither charging nor discharging, it is idle. Therefore, the correct use of lithium batteries has three significant aspects: accurate charging, correct discharging, and proper maintenance.

Correct charging method of lithium battery

Grasp the time and prevent overcharging. To the right thing at the right time; although the lithium battery has excellent electrochemical performance, anything will have safety hazards when it deviates from the equilibrium state. In detail, 

1. When charging, then charging. In the early days of the emergence of smartphones, out of the original intention of protecting their interests, each mobile phone manufacturer often emphasized the use of original chargers (including charging cables) to charge electrical equipment. Some manufacturers designed special data cables and did not support others. Charger (including charging cable). Charging is convenient, and a problem that users should pay attention to is keeping the battery with the power of regular use at all times. Under normal circumstances, when the battery is too low, both the mobile phone and the laptop will remind. At this time, you need to recharge it in time. Although the low battery will not cause a direct safety accident, overuse will cause damage to the battery structure over time.

2. fill it up. The inside of the lithium battery cell is also made up of many components. The new battery is good. If it takes a long time, the function of which member may decline, so there will be a risk of overcharging safety. Several typical accidents in Samsung and Apple were exposed were caused by the owners of electrical appliances putting their mobile phones on the bedside to charge them when they were sleeping, which eventually caused burns and explosions.

3. Do not use one mind and two purposes. I have experienced that using the mobile phone while charging it, especially when playing games, it is easy to feel the mobile phone heat up. The reason is also straightforward. The mobile phone is equivalent to doing two jobs simultaneously,  it is necessary to pay more than twice the labor force, and the body naturally heats up. Up.

Correct discharge method of lithium battery

Charge in time to prevent over-discharge. Ordinary mobile phone users are not aware of the hazards of over-discharge because there are usually no reports of safety incidents in over-discharge. Moreover, some people even think that regular deep discharge is suitable for the maintenance of battery performance. It is not the case because the memory effect of lithium batteries is negligible, and there is no saying that deep discharge eliminates the memory effect. Theoretically speaking, the total cycle life of a deep release of a lithium battery will be longer. Still, the risk is that over-discharge of the battery will cause the battery voltage to be too low and cannot be charged typically; sometimes, it will take a long time to turn on or even fail to turn on. The two evils are the lesser ones. Shorter service life is better than no use. Therefore, mobile phones and laptops are advised not to use black screens frequently.

Lithium battery is maintained correctly.

The temperature is suitable, and it is resistant to cold and heat. When idle, lithium batteries usually do not have safety accidents. Daily maintenance aims to place the lithium batteries in a suitable environment, thereby delaying the aging of the batteries. One of the parameter designs of lithium batteries is the appropriate temperature. The lower temperature is not a big problem, but if it is placed at a higher temperature, as the saying goes, the thing is hugely reversed, and it will also cause safety problems. The idle state we are talking about is only in the everyday environment. If the lithium battery is placed in water or close to the fire source, it will be out of the topic of "maintenance." Then, what is to be done in a typical environment? The waterside is moisture-proof, and the heat-proof side is sun-proof. Therefore, the suitable climate for daily maintenance of lithium batteries should be four words: ventilation and coolness. These four words should be followed regardless of whether the lithium battery is left unused independently or ready for use in electrical appliances.

In the correct use of lithium batteries, the charging method of lithium batteries is the most important because incorrect charging methods will cause safety problems. Discharge and daily maintenance affect only the service life of lithium batteries. Lithium batteries themselves are also a kind of Consumables, no matter what we take, we can't avoid its final loss, but we use the correct method to delay its aging.