Battery Manufactory

Lithium-ion batteries, as a new generation of rechargeable power sources, have the advantages of long cycle life, large volume density, high operating voltage, high safety performance, and wide operating temperature range. They are the mainstream development direction of current rechargeable batteries . It also has the characteristics of low maintenance requirements and no memory effect. It can be charged and discharged at any time during the battle, and requires almost no battlefield maintenance, reducing logistical burden. Therefore, it has been valued and developed by the military of all countries. In recent years, lithium-ion batteries have been widely used in military equipment such as individual combat systems, submarines, unmanned aerial vehicles, and aerospace vehicles, and have shown broad application prospects in land, sea, air, and space. Lithium-ion batteries have the following advantages in military applications . High working voltage. The discharge

Lithium battery maintenance methods, how to maintain lithium batteries in winter? Lithium batteries are easy to enter the market due to their advantages of compactness, lightness and environmental protection. The heavy, short life and heavy pollution lead-acid batteries can no longer meet our needs. The lithium battery has been cured, and it can be used for 5-7 years. Good maintenance habits can greatly help extend the life of your lithium battery. What are the precautions for lithium battery maintenance? How to maintain the lithium battery in winter? Lithium battery manufacturers will answer your questions below. Lipo battery maintenance method The most critical storage conditions for lithium batteries are temperature and humidity. Generally, room temperature has little effect on the state of lithium batteries, but there must be no direct sunlight. High temperatures can easily cause lithium batteries to swell or explode, so lithium batteries are generally stored

The working principle of lithium battery discharge, what is the cut-off voltage? The termination voltage of lithium battery discharge means that after the lithium battery is discharged to a certain voltage, it should not be continued to discharge, otherwise it will cause irreversible loss of some of the lithium battery ’s power and serious damage to the battery. The nominal voltage of a single lithium battery is generally 3.7V, and the termination voltage is 2.75V. Working principle of lithium battery discharge termination voltage The termination voltage of lithium battery discharge is an important application parameter related to the service life of lithium batteries. At present, the nominal voltage of a single lithium battery is generally designed to be 3.7V and the termination voltage is 2.75V. There are two cases that allow manufacturers to increase the upper limit of the termination voltage to 3.0V. One is the electrochemical properties determined by the lithiu

Aluminum case lithium battery: Batteries packed in aluminum cases are sealed with laser sealing technology and fully sealed. The aluminum case technology is very mature, and the material technology, such as the inflation rate, expansion rate and other indicators, is not high. Lithium battery aluminum case is a battery case made of aluminum alloy material. It is mainly used in square lithium batteries. The reason why lithium batteries are packaged in aluminum cases is that it is lighter and safer than steel cases. Lithium battery aluminum cases are designed with square and rounded corners. The material of the aluminum case is generally aluminum-manganese alloy. The main alloy components it contains are Mn, Cu, Mg, Si, Fe and so on. It plays different roles, such as Cu and Mg to increase strength and hardness, Mn to improve corrosion resistance, Si can enhance the heat treatment effect of magnesium-containing aluminum alloys, and Fe can increase high-temperature stre

The LiFePO4 battery has the advantages of high working voltage, large energy density, long cycle life, good safety performance, small self-discharge rate, and no memory effect. ① The working voltage is high. The operating voltage of the lithium cobaltate lithium ion battery is 3.6V, the operating voltage of the lithium manganate lithium ion battery is 3.7V, the operating voltage of the lithium iron phosphate battery pack is 3.2V, and the operating voltage of the nickel-hydrogen and nickel-cadmium batteries is only 1.2V. ② High energy density. The theoretical energy density of the lithium battery pack cathode material can reach more than 200W · h / kg. In practical applications, due to irreversible capacity loss, the energy density is usually lower than this value, but it can reach 140W · h / kg, which is still nickel-cadmium. 3 times the battery and 1.5 times the NiMH battery. ③Long cycle life. At present, the lithium battery pack can be cycled more than 1,0

18650 is the originator of lithium-ion batteries a standard lithium-ion battery model set by Japan's Sony Corporation in order to save costs, where 18 represents a diameter of 18mm, 65 represents a length of 65mm, and 0 represents a cylindrical battery. Working voltage of 18650 lithium-ion battery It is generally considered that the no-load voltage of a lithium battery is lower than 3.0V, which means that the battery is used up. Most lithium batteries cannot discharge the no-load voltage below 3.2V, otherwise over-discharge will damage the battery. 4.2V is the highest limit voltage for battery charging. It is generally considered that charging the lithium battery to 4.2V means that the battery is fully charged. During the battery charging process, the battery voltage gradually rises from 3.7V to 4.2V. Charge the no-load voltage to more than 4.2V, otherwise the battery will be damaged. This is the special place of lithium batteries. Generally speaking, 18650

Precautions for charging lithium batteries: 1. When charging the lithium battery, it is best to choose the original special charger, otherwise it will affect or damage the polymer lithium battery . 2. When charging lithium batteries, it is best to use slow charging. Avoid fast charging as much as possible. Repeated charging and discharging will also affect the life of lithium batteries. 3. Avoid charging at excessively high temperatures. If you use a lithium battery in an environment that is higher than the specified operating temperature, that is, above 40 ° C, the battery's power will continue to decrease, that is, the battery's power supply time will not be as usual long. 4. Avoid charging at too low temperature. If you use the lithium battery in a low temperature environment, that is, below 0 ° C, you will also find that the battery life is reduced. Some mobile phones' original lithium batteries can not even be charged in a low temperature environm

The internal resistance of a battery refers to the resistance to the current flowing through the battery during operation. It includes ohmic internal resistance and polarization internal resistance. Polarization internal resistance includes electrochemical polarization internal resistance and concentration polarization internal resistance.  What factors affect the internal resistance of lithium batteries? 1.Additional factors Temperature and ambient temperature are important factors influencing the resistance of various lithium batteries . Specifically for lithium batteries, the temperature affects the activity of electrochemical materials and directly determines the speed of electrochemical reactions and the speed of ion movement. The current or load demand, on the one hand, the magnitude of the current is directly related to the polarization internal resistance. The general trend is that the greater the current, the greater the internal resistance of polariza