Explain the relationship between the number of recharges and the attenuation of lithium-ion batteries

The normal charge and discharge cycle is not equal to the charge multiplied by the charge. The cycle refers to the complete battery usage. This is a cycle. If your battery is in a complete state, use one-tenth of the charge, and then full again. It is one-tenth of a cycle, which is 10 times the charge, which is basically a cycle. Similarly, from fully charged, half used and then fully charged, half used and then fully charged, this is also a cycle, and you are charged twice. Therefore, the cycle is only a question of how much energy the battery releases, not how many times it is charged. The nominal number of charge and discharge cycles does not mean that you can no longer use it after you use it up, but after so many cycles, the battery’s ability to store energy drops to, for example, for lithium-ion batteries, the rated charge and discharge cycle It is not less than 60% of the rated capacity after 500 times. After 500 cycles, this battery can only store up to 60% of the new battery's power. By the way, how to use a lithium-ion battery. Don't wait until the power is not charged. It is not good. Frequent charging is the right thing. There is no fixed limit on the number of charging times for lithium-ion batteries. Generally, batteries from manufacturers can charge and discharge at least 500 times, while the capacity remains above 80% of the initial capacity, and can be used for 2 years a day. Mobile phone batteries are usually charged 1,000 times, resulting in a serious lack of durability. Mobile phone battery maintenance methods: 1. Fully charge each time, reduce the number of charging, improve battery life. 2. Do not fully discharge the battery, usually less than 10% of the battery to be charged. 3. Use the original charger instead of the universal charger. 4. Do not use the mobile phone while charging. 5. Don't overcharge, the battery will stop charging when it is full. The relationship between 12V lithium ion battery charging times and attenuation 12V lithium ion batteries are widely used in mobile phones and digital products, tablet computers and notebook computers, power tools, electric bicycles, electric vehicles, power supply and energy storage. Lithium-ion batteries also come in many forms. First, the higher the charge-discharge rate of the charge-discharge multiplier, the better. C is a special symbol describing the charging and discharging current of the battery. The discharge capacity of 1C represents the amount of current required to turn the battery from full to empty in one hour. The battery capacity of iPhone6 u200bu200bis 1810mAH, so the 1C discharge current of the battery is 1.81 amperes. The battery capacity of the BYD e6 electric car is 200 AH, and the discharge current is 200 amperes. When a battery is discharged at a high power rate, it usually emits less energy than at a low power rate. The number of charge and discharge cycles, the more cycles, the better. 500 times is a common value for lithium-ion batteries, and the number of charging and discharging times for lithium-ion batteries made of different materials ranges from 300-3000 times. The specific meaning of this value varies from factory to factory, and can be roughly understood as: charge and discharge rate (such as 1C discharge, 0.3c charge; after 500 cycles, the battery still has 80% of the original capacity. The number of charge and discharge is very different from the usage habits. Great relationship. Let us give a few examples. 1. The influence of charge and discharge intensity on the number of cycles Factory remarks: each time from 0% to 100%, from 1C to 0.3c, the output drops to 80% after 500 times. This is the most Strict test cycle, but it can also be less stringent. See below. If each charge cycle is between 25%-75%, then discharge 1C, charge 0.3c, and the capacity drops to 80% after 2000 charges. If each charge The cycle is between 25%-75%, then discharge 3C, charge 0.3C, and reduce the capacity to 80% after 1600 times. 2. The impact of shallow charge and shallow discharge on life. Factory description: each time from 0% to 100%, from 1C to 0.3c, 500 times after the output drops to 80%, this is the most stringent test cycle, but it can also be less stringent, see below, each charge cycle is 25%-75%, put 1C, charge 0.3c, 2000 times After the capacity drops to 80%, each charge cycle is 50%-100%, put 1C, charge 0.3c, and the capacity drops to 80% after 1800 times. It can be seen from the above two examples that the smaller the charge-discharge rate, the better the life. Good; shallow filling is also good for life. Third, the smaller the internal resistance, the better. This parameter changes with the load weight, temperature and other factors. As the battery life decreases, the internal resistance gradually increases. The lower the resistance, the higher the charge and discharge rate of the battery. 18650 ordinary bat statement: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous one: Li-ion battery charge and discharge requirements have what?