Battery Manufactory

The self-discharge reaction of lithium-ion batteries is inevitable, and its existence not only leads to the reduction of the battery's own capacity, but also seriously affects the battery's configuration and cycle life. The self-discharge rate of lithium-ion batteries is generally 2% to 5% per month, which can fully meet the requirements for the use of single batteries. However, once a single lithium battery is assembled into a module, because the characteristics of each single lithium battery are not completely the same, after each charge and discharge, the terminal voltage of each single lithium battery cannot be completely consistent, which will cause problems in the lithium battery. The performance of the single lithium battery will be deteriorated if there is an overcharged or overdischarged single battery in the module. As the number of charging and discharging increases, the degree of deterioration will be further aggravated, and the cycle life will be ...

Ternary lithium ion battery refers to a lithium ion battery that uses three transition metal oxides of nickel, cobalt, and manganese as the positive electrode material. Because it combines the advantages of lithium cobalt oxide, lithium nickel oxide and lithium manganate, it has excellent performance for any of the above single-component cathode materials. Classification of ternary lithium-ion batteries 1. Ternary polymer lithium ion battery Ternary polymer lithium ion battery refers to a lithium ion battery that uses nickel, cobalt, and lithium manganate (Li(NiCoMn)O2) as the positive electrode material, and uses a gel polymer electrolyte. As the transmission medium of ion movement, electrolyte is generally composed of solvent and lithium salt. The electrolyte of lithium secondary battery mainly includes liquid electrolyte, ionic liquid electrolyte, solid polymer electrolyte and gel polymer electrolyte. 2. Ternary power lithium-ion battery The so-called power lithium...

Why can't the 18650 lithium battery be charged? The 18650 type lithium battery is a more commonly used lithium battery in electronic products, and is often used as a cell in the battery pack of a notebook computer. When we use it, we find that sometimes the 18650 lithium-ion battery cannot be charged. Let's analyze the reason below.        1. The electrode contacts of the battery are dirty, the contact resistance is too large, and the voltage drop is too large. When charging, the host thinks that it is full and stops charging;        2. The internal charging circuit fails and cannot be charged normally;        3. An internal failure occurred in the 18650 lithium cells . 18650 battery can not be charged solution 　　 1. The charger interface is aging or the charger itself is damaged, replace it with a new charger for testing. 　　 2. The metal of the charging hole is oxidized and the contact ...

The lithium battery protection circuit board is mainly composed of protection IC (overvoltage protection) and MOS tube (overcurrent protection), and is a device used to protect the safety of lithium battery cells. Lithium batteries are widely used by people for their large discharge current, low internal resistance, long life, and no memory effect. Lithium-ion batteries are strictly prohibited from overcharging, overdischarging, and short-circuiting during use, otherwise it will cause the battery to catch fire and explode. Therefore, when using rechargeable lithium batteries, there will be a protective circuit board to protect the safety of the batteries. Working principle of battery protection circuit board Lithium-ion battery protection circuit boards have different circuits and parameters according to different ICs, voltages, etc. The commonly used protection ICs are 8261, DW01+, CS213, GEM5018, etc. Among them, Seiko's 8261 series have better accuracy and of co...

18650 is a lithium-ion battery is a standard lithium-ion battery model set by the Japanese SONY company in order to save costs, where 18 represents a diameter of 18mm, 65 represents a length of 65mm, and 0 represents a cylindrical battery. The battery pack assembled by two or more 18650 cells in series or in parallel is collectively called the 18650 battery pack . 18650 lithium ion battery pack customization process 18650 lithium-ion battery pack customization No matter what kind of lithium-ion battery pack is made, the specific parameters of the battery need to be provided. Therefore, the more detailed the customized parameters of the 18650 lithium-ion battery pack provided by the customer when customizing the lithium-ion battery, the closer the customized battery will be demand, and it is more conducive to the custom price calculation of 18650 lithium-ion battery packs. The 18650 lithium-ion battery pack customization process is customized according to actual product...

  As we all know, the high-temperature performance of lithium iron phosphate battery packs is very good, the peak heat can reach 350～500℃, and it can still release 100% capacity at high temperature (60℃). But the low temperature is a bit worse than other battery systems, so how to improve its low temperature performance? Lithium iron phosphate battery Lithium iron phosphate battery refers to a lithium ion battery that uses lithium iron phosphate as a positive electrode material. The cathode materials of lithium-ion batteries mainly include lithium cobaltate, lithium manganate, lithium nickelate, ternary materials, lithium iron phosphate and so on. Among them, lithium iron phosphate is currently the cathode material used in most lithium-ion batteries. The demand for lithium iron phosphate battery packs has skyrocketed, and improving the low-temperature performance of lithium batteries has become the key. What are the factors that affect the low-temperature performanc...

What is overcharging and how does it affect battery performance? Overcharge refers to the behavior of continuing to charge the battery after it has been fully charged in a certain charging process. Since the capacity of the negative electrode is higher than that of the positive electrode in the design, the gas from the positive electrode permeates through the separator paper and recombines with the cadmium from the negative electrode. Therefore, under normal circumstances, the internal pressure of the battery will not increase significantly, but if the charging current is too large, or the charging time is too long, the oxygen that appears is too late to be consumed, which may cause the internal pressure to rise, battery deformation, and liquid leakage, and other undesirable phenomena. At the same time, its electrical performance will also be significantly reduced. What is over-discharge and how does it affect battery performance? Over-discharge means that the battery h...