Teach you how to properly charge cell phone batteries, as well as how to protect and charge cell phone batteries (lithium battery).
1. Lithium batteries do not need to be activated at all. Regarding the problem of "activating" lithium batteries, many opinions believe that the charging time must be more than 12 hours and repeated three times to be able to do so. activate the battery. This claim that "the first three charges require more than 12 hours" is obviously a continuation of the claim regarding nickel batteries (such as nickel-cadmium and nickel-metal hydride). This statement can therefore be considered misinformation from the start. Therefore, after purchasing the mobile phone, it is best to charge it according to the standard time and method, especially do not charge for more than 12 hours
2. number of charges, only with the charge cycle. To put it simply, it just depends on how much energy your battery discharges. Regarding lithium batteries, there is a saying of "charging cycle", which means that when the total charging capacity of multiple charges is 100%, it is considered to be a charging cycle. Don't worry, plugging your phone into the computer will damage the battery;
3. Overcharging means overcharging puts your phone on the edge of a cliff. Some people think that even if the phone is broken. This is a reminder that the interior may not be fully charged after charging, so it will take some time after charging (unless there is a sudden power outage during charging). In fact, lithium batteries or chargers will automatically stop charging once the battery is fully charged, and). there is no battery charger on eitherckel. The so-called “maintenance” charge lasts 10 hours. That is, if your lithium battery is fully charged and placed on the charger, it will be charged in vain. And none of us can guarantee that the characteristics of the battery charging protection circuit will never change and the quality is foolproof, so your battery will be on the verge of danger for a long time. This is another argument against a long charge. Additionally, on some machines, if the charger is not removed after a charge for more than a certain amount of time, the system will not only stop charging, but also start a discharge-charge cycle. Perhaps the manufacturer of this approach has its own agenda, but it obviously hurts battery life. At the same time, long-term charging takes a long time and often has to be done at night. In many places, nighttime voltage is relatively high and fluctuates considerablyis lying. As mentioned previously, lithium batteries are very delicate and much less resistant to charge and discharge fluctuations than nickel batteries, which presents additional dangers. Therefore, it is better to charge according to the standard time and method, and not to overcharge
4. The dreaded battery “over-discharge” causes the voltage to be too low due to over-discharge; , so it does not have normal charging and charging capabilities. There is a widely spread saying about turning on the machine and charging it for a long time, that is, "try to run out the battery of the machine, and it is better." to use automatic shutdown." This approach is actually only applied to nickel batteries to avoid the memory effect. Unfortunately, it has also been carried over to lithium batteries until today. Allow me to repeat that we use the tensionlithium batteries. The charging and discharging characteristics of lithium batteries and nickel batteries are very different. Various technical data point out that overcharging and overdischarging will cause huge damage to lithium batteries, especially overdischarging. If the phone tells you the battery is too low, charge it;
5. If not used for a long time.If your cell phone is not used for a while (one to two months), rinse it. You may feel like the battery isn't helping much the first few times, but it will recover after a few times.
Lithium Battery Charging and Discharging Principles
Lithium iron phosphate batteries from Pacific Automotive Network can be deeply discharged. Lithium batteries consume the energy contained in the battery during normal use. this process is appthe discharge. Lithium batteries also have self-discharge. If the battery voltage remains below 3.6V for a long time, the battery will discharge excessively and damage the internal structure of the battery, thereby reducing its service life. Deep charging and discharging can extend the life of lithium batteries.
Precautions for lithium battery discharge Lithium battery discharge, for batteries, normal use is the discharge process. There are only a few things to pay attention to when discharging lithium batteries:
1. The discharge current should not be too large. Excessive current will cause internal heating of the lithium battery, which may cause internal heating of the lithium battery. permanent damage. On mobile phones this is no problem and can be ignored. The higher the discharge currentThe greater the voltage of a lithium battery, the lower the discharge capacity and the faster the voltage drops.
2. Never overload. The internal storage of electrical energy in lithium batteries is achieved by a reversible chemical change in electrochemistry. Hence, lithium batteries. are the best. Fear of excessive discharge. Once the discharge voltage is below 2.7V, the battery can be discarded. Lithium batteries in cell phones have a protection circuit installed inside. When the voltage is not low enough to damage the battery, the protection circuit comes into effect and stops discharging.
3. Do not discharge high power lithium batteries. Li+ is deintercalated from the negative electrode and integrated into the positive electrode through the electrolyte. the battery will be discharged during normal use, and the reverse will happen.produced during charging. The voltage decay of lithium batteries declines more quickly as the discharge rate increases, and the sooner it reaches the termination voltage, but the decay rate slows down at the end. Therefore, the characteristics of low-rate discharge are better than those of high-rate discharge. rate and high power discharges are avoided as much as possible.
In general: the higher the discharge current of a lithium battery, the lower the discharge capacity and the faster the voltage drop. Therefore, under normal circumstances, once the battery is subjected to a large load, the voltage will increase when the load is reduced, which is called the "recharging" phenomenon.
Knowledge of Deep Discharge of Lithium Batteries Deep discharge refers to the extent to which the power of the battery is discharged as much as possiblewithout damaging the battery structure. Generally, discharge to 0.7-1.0 V can be. considered a deep discharge. The depth of discharge of a lithium battery refers to the ratio of the energy discharged from the lithium battery to the total energy stored (rated capacity). The smaller the number, the weaker the discharge. For example, a depth of discharge of 80% means that the battery is discharged to the remaining 20% of capacity.
The impact of depth of discharge on the battery is as follows: the deeper the depth of discharge, the easier it is to shorten the life of the lithium battery; another aspect is the performance on the discharge curve. The deeper the discharge. goes, the less voltage and current there is. Depth of discharge is closely related to voltage and current. We can say that it is expressed in voltage and acts on current. Under the same release regimerge, the lower the voltage value, the deeper the depth of discharge.
Lithium BatteryThe deeper the depth of discharge, the greater the battery loss; The more fully charged the lithium battery, the greater the battery loss. It is best for lithium batteries to be in an intermediate state of charge, where they have the longest life.
(Images/Text/Photos: Pacific Automotive Network Q&A)
What is the difference between lithium batteries and lead acid batteries
Lithium batteries During discharge, the lithium atoms on the negative electrode will decompose into electrons and lithium ions. The electrons reach the positive electrode via the external circuit and the lithium ions reach the positive electrode via the separator. Lithium is a very active metal and cannot be retained in the negative electrode. If it is notnot retained, it will decompose into lithium ions and electrons. The lithium battery is a rechargeable battery. This is
The principle and process of charging lithium battery
When charging, the lithium atoms on the positive electrode will decompose into lithium ions and electrons . The electrons reach the negative electrode via the exterior. circuit, and the lithium ions arrive through the negative electrode of the separator. At the negative electrode, lithium ions meet electrons, transforming lithium ions into lithium atoms.
The principle of charging and discharging lithium batteries is very simple. During charging and discharging, lithium ions move in different directions.
During discharge, the lithium atoms in the negative electrode will decompose into lithium ions and electrons. The electrons will reach the positive electrode along the external circuit, and the lith ionsium will reach the positive electrode through the separator.
Lithium ions form lithium atoms when they encounter electrons at the anode.
The opposite is true when loading. When charging, lithium ions move from the positive electrode to the negative electrode.
Lithium battery is a widely used battery. The batteries we usually use in mobile phones, tablets and laptops are all lithium batteries.
The batteries used in pure electric cars are also lithium batteries. Generally, pure electric vehicles use two types of batteries, one is ternary lithium battery and the other is lithium iron phosphate battery.
Lithium iron phosphate batteries are safer than ternary lithium batteries, but the energy density of ternary lithium batteries is highereur to that of lithium iron phosphate batteries.
Pure electric family cars generally use ternary lithium batteries, and pure electric buses use lithium iron phosphate batteries.
Lithium iron phosphate batteries will only burn at 800℃, and ternary lithium batteries will start burning at 200℃.
Principles of charging and discharging lithium batteries
When lithium batteries are discharged, the lithium atoms on the negative electrode decompose into electrons and lithium ions. The electrons reach the positive electrode via the outer electrode. circuit, and the lithium ions reach the positive electrode through the separator.
Lithium is a very active metal that cannot be retained in the negative electrode. If not retained, it will break down into lithium ions and electrons.
The lithium battery is a rechargeable battery.
In Fit, the principle of charging and discharging lithium batteries is very simple. The direction of movement of lithium ions is different during charging and discharging.de.
The structure of the lithium battery is also very simple. This battery consists of a positive electrode, a negative electrode, a separator and an electrolyte.
The separator of a lithium battery lets lithium ions pass through, but not electrons.
During the charging process, the lithium atoms on the anode are broken down into electrons and lithium ions under the action of an external power source.
In this way, the lithium ions will move to the negative electrode via the separator and the electrons will move to the negative electrode via the external circuit.
When lithium ions arriving at the negative electrode encounter electrons, they form lithium atoms.
The negative electrode of batteriesLithium is generally made of graphite because graphite has a multilayer structure that can accommodate lithium atoms.
There are many types of positive electrodes for lithium batteries, the most common are ternary lithium batteries and lithium iron phosphate batteries.
Lithium batteries commonly used in pure electric vehicles also include lithium iron phosphate batteries and ternary lithium batteries.
Lithium batteries are widely used in mobile phones, tablets, laptops, etc. The principle and process of charging lithium battery Charging and discharging principle of lithium battery @2019
1 Different properties
1. lead and its oxidation Batteries are made of materials and the electrolyte is a solution of sulfuric acid.
2. BaLithium battery: A type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution.
2. Different characteristics
1. Characteristics of lead-acid batteries:
(1) Safety seal
During normal operation, the electrolyte No leakage from the battery terminals or case. No free acid Special wick separators keep the acid inside and there is no free acid inside the battery, so the battery can be placed anywhere.
(2) Ventilation system
Once the internal pressure of the battery exceeds the normal level, the lead-acid battery will release excess gas and automatically close to ensure that there is no excess gas in the battery.
(3) Simple maintenance
Since the gas composite system converts the generated gas into water, there is no need to add de water when using VRLA batteries.
(4) Long lifespan
VRLA batteries using corrosion-resistant lead-calcium alloy fences can float for 10-15 years.
2. Lithium battery characteristics:
(1) The energy is relatively high. It has a high storage energy density, reaching 460-600 Wh/kg, about 6-7 times that of lead-acid batteries.
(2) Long service life, the service life can reach more than 6 years. Lithium iron phosphate is used as a positive electrode battery for charging and discharging 1C (100% DOD), with 10,000 records available;
(3) High rated voltage (single operating voltage is 3.7V or 3.2V), equivalent to three sections of nickel-cadmium or nickelThe series voltage of hydrogen rechargeable batteries easily constitutes battery power. Lithium batteries can adjust thevoltage to 3.0 V thanks to the new voltage regulator technology of lithium batteries to adapt to the use of small household appliances.
(4) With high power endurance, the lithium iron phosphate battery for electric vehicles can reach 15-30 degrees Celsius charging and discharging capacity, which is convenient for starting and high intensity accelerations.
(5) The self-discharge rate is very low, which is one of the most notable advantages of the battery. This can be less than 1%/month, less than 1/20 of NiMH batteries.
Detailed information:
Maintenance of lithium batteries and lead-acid batteries:
The charging process for new batteries usually takes 6 to 8 hours. The charger will turn green after charging. If the charging time is too long, you should check whether theThe charger voltage protection device is damaged. If damaged, the charger should be replaced in time. Otherwise, it's easy to recharge the battery. In addition, the charger does not buy a fast charger, and fast charging is also harmful to the battery board.
If the battery is not cleaned in time, it will easily affect the service life and electrical performance of the battery. Simply put, a battery is an electrochemical device that converts chemical energy into electrical energy. For the battery to function properly, it must be kept clean.
Baidu Encyclopedia-Lithium Battery
Baidu Encyclopedia-Lead Acid Battery