I. What is the general process of lithium battery charging and discharging in our daily life?

1. The working principle of lithium battery refers to the charge and discharge principle of lithium battery. When the battery is charged, the lithium-ion battery is generated in the positive phase of battery charging, and the generated lithium-ion battery moves to the negative phase according to the lithium battery electrolyte. As a negative electrode layer, carbon has a porous plate structure, which reaches the lithium ion battery of the negative electrode layer and is located in the porous plate of the carbon layer. The more lithium-ion batteries you place, the higher the battery's charging capacity.

2. Similarly, when a rechargeable battery is charged and discharged (i.e. when a rechargeable battery is used), the lithium-ion battery embedded in the negative carbon layer goes out and moves to the positive phase again. The more anodic oxidation on the back of lithium-ion battery, the higher the charge-discharge capacitance. Generally speaking, battery capacity refers to the amount of charge and discharge. In the whole charging process of a lithium-ion battery, the lithium-ion battery starts from the positive phase to the negative phase to the positive phase. If a lithium battery is compared to a rocking chair, the two sides of the rocking chair are the two sides of the rechargeable battery. Lithium-ion batteries are like a good racer running up and down the sides of a rocking chair. So leading experts have given lithium batteries a cute name: rocking chair rechargeable batteries.

2. The whole charging and discharging process of lithium batteries

1. The charging operation of lithium battery is divided into two stages. The first stage is to charge the constant-current power battery. When the voltage of the lithium battery is lower than V, the charging head will use a constant current power supply to charge the lithium battery. The second stage is the constant current source to charge the lithium battery. When the battery voltage reaches V, due to the nature of lithium batteries, if the operating voltage is higher, it will be destroyed. The charging head will fix the operating voltage at V, and the current will gradually decrease. When the current is reduced to a certain value (generally 110% of the set current), the lithium battery charging power supply circuit is disconnected, the lithium battery charging display light flashes, lithium battery overcharging will cause permanent damage to the positive and negative terminals. Excessive charge and discharge will lead to the collapse of the negative carbon sheet structure, so that the lithium-ion battery cannot be inserted into the whole process of battery charging. Overcharging causes too many lithium-ion batteries to be placed in negative carbon structures, some of which cannot be released again.

2. Some charging heads are completed in accordance with cheap schemes, and the linearity is not good enough, which can easily lead to abnormal battery charging and even damage the rechargeable battery. When choosing the charging head, try to choose the well-known brand 18650 lithium battery charging head, to ensure the quality, quantity and after-sales maintenance service, improve the service life of the rechargeable battery. 18650 lithium battery charging head with overcurrent protection, overcurrent protection, overvoltage protection, rechargeable battery reverse connection maintenance four major maintenance functions. Overcharge maintenance: When the charging head overcharges the lithium battery, it is necessary to stop the battery charging in order to better avoid the increase of internal working pressure caused by rising temperature. Therefore, protective equipment must monitor the voltage of lithium batteries. When the rechargeable battery is overcharged to the operating voltage of the battery, the overcharge protection function is activated and the battery charging is terminated. Overcharge and discharge maintenance: In order to better avoid the overcharge and discharge of lithium battery, when the operating voltage of lithium battery is lower than its overcharge and discharge operating voltage detection point, the overcharge and discharge maintenance is stimulated to terminate the charge and discharge, so that the rechargeable battery can keep in the shutdown mode of low static data current. Overcurrent and overcurrent protection: When the charging and discharging current of the lithium battery is too large or short circuit occurs, the protection device activates the overcurrent protection function.

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