Lithium Battery
Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive/negative electrode material and a non-aqueous electrolyte solution.
It can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. The fifth generation product of rechargeable batteries, lithium metal batteries, was born in 1996. Its safety, specific capacity, self discharge rate, and cost-effectiveness are all superior to lithium-ion batteries. Due to their own high-tech requirements, only a few companies in certain countries are producing this type of lithium metal battery.
High-capacity Lithium-ion Batteries
MANUFACTURING
Vacuum solutions for the lithium-ion battery manufacturing process
Lithium-ion batteries are at the heart of e-mobility. They cancurrently store more charge per unit of mass than other battery types - and make reasonable ranges possible.
Key processes during their manufacture are performed undervacuum. Our vacuum solutions are operated at major lithium-ionbattery production sites the world over. They are renowned for their reliability in all stages of the lithium-ion battery production.
Lithium-ion Battery Life
The lifespan of lithium batteries is generally 300-500 charging cycles. Assuming a complete discharge provides 1Q of electricity, without considering the decrease in electricity after each charging cycle, lithium batteries can provide or supplement a total of 300Q-500Q of electricity during their lifespan. From this, we know that if we charge with 1/2 each time, we can charge 600-1000 times; If you charge with 1/3 each time, you can charge 900-1500 times. Similarly, if charged randomly, the number of times is not fixed. In short, no matter how it is charged, the total amount of electricity replenished from 300Q to 500Q is constant. So, we can also understand it this way: the lifespan of lithium batteries is related to the total charging capacity of the battery, and not to the number of charging times. The impact of deep discharge and shallow charge on the lifespan of lithium batteries is not significantly different.
Fbelec's lithium battery manufacturers are exported to Europe, America, Australia, Japan, South Korea and Southeast Asia. They have professional services all over the world and have been recognized and praised by customers. They also have a large number of experienced industrial workers, who are professional and assured. The company is equipped with advanced manufacturing equipment, accurate testing instruments, full-automatic lithium battery assembly machine, full computer monitoring intelligent aging equipment, etc.
Operates in strict accordance with ISO9001:2008 quality management system to ensure to provide customers with high-quality aluminum batteries
Selection method of lithium battery
Lithium thionyl chloride battery pack connected in series
Lithium ion batteries are divided into liquid lithium ion batteries and polymer lithium ion batteries. The electrolyte of lithium-ion battery is flowing. Therefore, it is more unstable than lithium polymer battery. It may cause battery explosion in case of external force, or using a charger that does not meet the standard. Many mobile phones, laptops and other portable electronic products use lithium batteries. In other words, many people have a "bomb" around them. For the sake of safety, you must pay attention to the following points when shopping.
1. Is the capacity clearly marked. Batteries without clearly marked capacity (such as 1000mah or 1000mA / h) are likely to use inferior batteries or recycled batteries. Many cheap batteries in the market are made of recycled battery cores. Although the price is cheap, the service life is short and the quality is unstable. Careless use may damage the mobile phone.
2. There is no guarantee of standby time. Standby time refers to the continuous use time from the time the battery is loaded into the mobile phone to the next charging. Generally, the batteries sold in the market can not guarantee the standby time for customers, because the battery quality is unstable. Many cheap batteries use poor quality battery cores, so the standby time is very short.
3. Whether safety protection circuit board is installed. Without a protective circuit board, the lithium battery is in danger of deformation, liquid leakage and explosion. Under the vicious price cutting competition, each family seeks a lower price to protect the circuit board, or omits the device at all, making the market full of lithium batteries with explosion risk. Consumers can't tell whether there is a protective circuit board from the appearance, so it's best to choose a reputable merchant to buy it.
Usage method
Lithium batteries are durable goods and do not need to be equipped with expensive original seat batteries. Generally, ordinary seat batteries with brands can be used. The price is 15-20 yuan, eliminating the restriction that direct charging needs to rely on mobile phones. Seat charging can be divided into fast charging (about 2-3 hours) and slow charging (up and down for 10 hours). If there are many batteries, it is better to choose fast charging.
In addition, due to the characteristics of lithium battery, it is not necessary to discharge and overcharge. The life of the battery depends entirely on the effective charging time. In other words, even if you start charging in half, it has no effect on the battery life.
1. Cognitive memory effect
Battery memory effect refers to the reversible failure of battery, that is, the performance that can be recovered after battery failure. Memory effect means that the battery automatically maintains this specific tendency after a specific working cycle for a long time. This was first defined in Ni Cd battery. Ni CD bag battery has no memory effect, while sintered battery has memory effect Nickel metal hydrogen (commonly known as nickel hydrogen) batteries are not bound by this definition of memory effect.
Recommendation 1: it is unnecessary and harmful to discharge the battery before each charging, because the service life of the battery is unnecessarily shortened.
Recommendation 2: it is not advisable to use a resistor to connect the positive and negative poles of the battery for discharge. The current can not be controlled, which is easy to be put to 0V, and even lead to the reversal of the battery polarity of the series battery pack.
2. The battery needs to be activated
Before leaving the factory, the lithium-ion battery must go through the following process: the lithium-ion battery shell is filled with electrolyte - Sealed - formed, that is, constant voltage charging and then discharge. In this way, several cycles are carried out to make the electrode fully infiltrate the electrolyte and fully activate until the capacity meets the requirements. This is the activation process - Volume division. It is to test the capacity of batteries, select batteries with different performance (capacity) for classification, classify the battery level, and match the capacity In this way, the lithium-ion battery has been activated in the user's hand.
The time for the batteries delivered from the battery factory to reach the users is sometimes very long, ranging from one month to half a year. At this time, because the battery electrode materials will be passivated, the manufacturer recommends that the batteries used for the first time should be fully charged and discharged for 3-5 times, so as to eliminate the passivation of electrode materials and achieve the maximum capacity.
3. The first three times do not need to be charged for 12 hours
Early mobile phone NiMH batteries need replenishment and trickle charging process. It may take about 5 hours to reach the most perfect charging state, but it doesn't take 12 hours. The constant current and constant voltage charging characteristics of lithium-ion battery determine that its deep charging time does not need 12 hours.
4. Is the rechargeable battery at its best
Nickel based batteries have the best state, generally reaching their maximum capacity between 100-200 cycles. For liquid lithium-ion batteries, there is no such hump of cycle capacity. Lithium ion batteries are not at their best.
5. The greater the charging current, the faster the charging
For the charging of lithium-ion battery, increasing the constant current value of constant current and constant voltage charging mode within a certain current range (1.5c-0.5c) can not shorten the time of filling lithium-ion battery.
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