Lithium battery daily care tutorial

Lithium battery daily nursing skills tutorial analysis small compilation, most of the mistakes in the use of lithium batteries are due to misunderstandings of related terms, so it is necessary to explain specifically.

1. Memory effect

Common phenomenon on nickel-metal hydride rechargeable batteries. The specific performance is: If you start using batteries without full power for a long time, the battery's power will drop significantly, even if you want to fill it later. Therefore, the important way to maintain nickel-metal hydride batteries is: The electricity must be used up to start charging, and it is full of electricity before it is allowed to be put into use. The memory effects of commonly used lithium batteries can be small enough to be ignored.

2. Full charge, complete discharge

This is for lithium batteries.

Full discharge refers to the process of adjusting electric smart devices, such as mobile phones, to the lowest power consumption until the phone is automatically turned off.

Full charging refers to the process of attaching a fully discharged electric smart device, such as a mobile phone, to a charger until the phone prompts "full".

3. Excessive discharge

This is also for lithium batteries. After complete discharge, a small amount of electricity will remain inside the lithium battery, but this part of the battery is crucial for the activity and life of the lithium battery.

Excessive discharge: After complete discharge, if you continue to use other methods, such as forcibly turning on your mobile phone again, and the battery is connected to a small light bulb, it consumes residual electricity. This is called excessive discharge.

Will cause irreversible damage to lithium batteries.

4. Protect chips

Lithium batteries have extremely strict requirements on the current and voltage of the battery when charging and discharging. In order to protect the battery from damage due to abnormal external electrical environment, a chip for managing the working state of the battery is set inside the battery body. This chip also has the function of recording battery capacity and correcting battery capacity. Now, even if it is a cottage mobile phone battery, it will not save this key protection chip, otherwise the cottage mobile phone battery can not be used for a long time.

5. Overrun over the protection circuit

Electrical smart devices have built-in chips and circuits that fully manage battery work.

For example, on a mobile phone, there is such a circuit, which is roughly as follows:

First, when charging, provide the most appropriate voltage current to the battery. Stop charging at the right time.

Second, when the battery is not charged, check the battery residual power at all times, and order the mobile phone to shut down at the appropriate time to prevent excessive discharge.

Third, when booting, check whether the battery has been fully discharged. If it has been fully discharged, prompt the user to charge and then shut down.

Fourth, avoid abnormal battery or charging wire power, when the anomaly is found, disconnect the circuit to protect the mobile phone.

6. Overcharge:

It's for lithium batteries.

Under normal circumstances, a lithium battery is charged to a certain voltage(that is, full) and the charging current is cut off by the upper circuit, but due to the different voltage current parameters of the built-in overcharge protection circuit of some devices(such as cell phone battery seat filling), Causes the phenomenon that although it is full, it has not stopped charging.

Overcharging can also cause battery performance damage.

7. How to Activate

Lithium batteries are not used for a long period of time (more than three months), they will produce passivation of electrode materials, and the battery performance will be reduced. Three full charges and complete discharges can be used to remove the purification, and the highest performance of the battery can be achieved.

The page contains the contents of the machine translation.